1 /* Meta support for 32-bit ELF
2 Copyright (C) 2013 Free Software Foundation, Inc.
3 Contributed by Imagination Technologies Ltd.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "elf32-metag.h"
27 #include "elf/metag.h"
29 #define GOT_ENTRY_SIZE 4
30 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34 1 - with GOT offset */
35 #define METAG_ELF_ABI_VERSION 1
37 static const unsigned int plt0_entry[] =
39 0x02000005, /* MOVT D0Re0, #HI(GOT+4) */
40 0x02000000, /* ADD D0Re0, D0Re0, #LO(GOT+4) */
41 0xb70001e3, /* SETL [A0StP++], D0Re0, D1Re0 */
42 0xc600012a, /* GETD PC, [D0Re0+#4] */
46 static const unsigned int plt0_pic_entry[] =
48 0x82900001, /* ADDT A0.2, CPC0, #0 */
49 0x82100000, /* ADD A0.2, A0.2, #0 */
50 0xa3100c20, /* MOV D0Re0, A0.2 */
51 0xb70001e3, /* SETL [A0StP++], D0Re0, D1Re0 */
52 0xc600012a, /* GETD PC, [D0Re0+#4] */
55 static const unsigned int plt_entry[] =
57 0x82100005, /* MOVT A0.2, #HI(GOT+off) */
58 0x82100000, /* ADD A0.2, A0.2, #LO(GOT+off) */
59 0xc600806a, /* GETD PC, [A0.2] */
60 0x03000004, /* MOV D1Re0, #LO(offset) */
61 0xa0000000 /* B PLT0 */
64 static const unsigned int plt_pic_entry[] =
66 0x82900001, /* ADDT A0.2, CPC0, #HI(GOT+off) */
67 0x82100000, /* ADD A0.2, A0.2, #LO(GOT+off) */
68 0xc600806a, /* GETD PC, [A0.2] */
69 0x03000004, /* MOV D1Re0, #LO(offset) */
70 0xa0000000 /* B PLT0 */
73 /* Variable names follow a coding style.
74 Please follow this (Apps Hungarian) style:
76 Structure/Variable Prefix
77 elf_link_hash_table "etab"
78 elf_link_hash_entry "eh"
80 elf_metag_link_hash_table "htab"
81 elf_metag_link_hash_entry "hh"
83 bfd_link_hash_table "btab"
84 bfd_link_hash_entry "bh"
86 bfd_hash_table containing stubs "bstab"
87 elf_metag_stub_hash_entry "hsh"
89 elf_metag_dyn_reloc_entry "hdh"
91 Always remember to use GNU Coding Style. */
93 #define PLT_ENTRY_SIZE sizeof(plt_entry)
95 static reloc_howto_type elf_metag_howto_table[] =
97 /* High order 16 bit absolute. */
98 HOWTO (R_METAG_HIADDR16, /* type */
100 2, /* size (0 = byte, 1 = short, 2 = long) */
102 FALSE, /* pc_relative */
104 complain_overflow_dont, /* complain_on_overflow */
105 bfd_elf_generic_reloc, /* special_function */
106 "R_METAG_HIADDR16", /* name */
107 FALSE, /* partial_inplace */
109 0x0007fff8, /* dst_mask */
110 FALSE), /* pcrel_offset */
112 /* Low order 16 bit absolute. */
113 HOWTO (R_METAG_LOADDR16, /* type */
115 2, /* size (0 = byte, 1 = short, 2 = long) */
117 FALSE, /* pc_relative */
119 complain_overflow_dont,/* complain_on_overflow */
120 bfd_elf_generic_reloc, /* special_function */
121 "R_METAG_LOADDR16", /* name */
122 FALSE, /* partial_inplace */
124 0x0007fff8, /* dst_mask */
125 FALSE), /* pcrel_offset */
127 /* 32 bit absolute. */
128 HOWTO (R_METAG_ADDR32, /* type */
130 2, /* size (0 = byte, 1 = short, 2 = long) */
132 FALSE, /* pc_relative */
134 complain_overflow_bitfield, /* complain_on_overflow */
135 bfd_elf_generic_reloc, /* special_function */
136 "R_METAG_ADDR32", /* name */
137 FALSE, /* partial_inplace */
138 0x00000000, /* src_mask */
139 0xffffffff, /* dst_mask */
140 FALSE), /* pcrel_offset */
143 HOWTO (R_METAG_NONE, /* type */
145 0, /* size (0 = byte, 1 = short, 2 = long) */
147 FALSE, /* pc_relative */
149 complain_overflow_dont, /* complain_on_overflow */
150 bfd_elf_generic_reloc, /* special_function */
151 "R_METAG_NONE", /* name */
152 FALSE, /* partial_inplace */
155 FALSE), /* pcrel_offset */
157 /* 19 bit pc relative */
158 HOWTO (R_METAG_RELBRANCH, /* type */
160 2, /* size (0 = byte, 1 = short, 2 = long) */
162 TRUE, /* pc_relative */
164 complain_overflow_signed, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_METAG_RELBRANCH", /* name */
167 FALSE, /* partial_inplace */
169 0x00ffffe0, /* dst_mask */
170 FALSE), /* pcrel_offset */
173 HOWTO (R_METAG_GETSETOFF, /* type */
175 1, /* size (0 = byte, 1 = short, 2 = long) */
177 FALSE, /* pc_relative */
179 complain_overflow_dont, /* complain_on_overflow */
180 bfd_elf_generic_reloc, /* special_function */
181 "R_METAG_GETSETOFF", /* name */
182 FALSE, /* partial_inplace */
185 FALSE), /* pcrel_offset */
212 HOWTO (R_METAG_GNU_VTINHERIT, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_METAG_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 HOWTO (R_METAG_GNU_VTENTRY, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE, /* pc_relative */
232 complain_overflow_dont, /* complain_on_overflow */
233 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
234 "R_METAG_GNU_VTENTRY", /* name */
235 FALSE, /* partial_inplace */
238 FALSE), /* pcrel_offset */
240 /* High order 16 bit GOT offset */
241 HOWTO (R_METAG_HI16_GOTOFF, /* type */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE, /* pc_relative */
247 complain_overflow_dont, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_METAG_HI16_GOTOFF", /* name */
250 FALSE, /* partial_inplace */
252 0x0007fff8, /* dst_mask */
253 FALSE), /* pcrel_offset */
255 /* Low order 16 bit GOT offset */
256 HOWTO (R_METAG_LO16_GOTOFF, /* type */
258 2, /* size (0 = byte, 1 = short, 2 = long) */
260 FALSE, /* pc_relative */
262 complain_overflow_dont, /* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_METAG_LO16_GOTOFF", /* name */
265 FALSE, /* partial_inplace */
267 0x0007fff8, /* dst_mask */
268 FALSE), /* pcrel_offset */
270 /* GET/SET GOT offset */
271 HOWTO (R_METAG_GETSET_GOTOFF, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_dont, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_METAG_GETSET_GOTOFF", /* name */
280 FALSE, /* partial_inplace */
283 FALSE), /* pcrel_offset */
285 /* GET/SET GOT relative */
286 HOWTO (R_METAG_GETSET_GOT, /* type */
288 1, /* size (0 = byte, 1 = short, 2 = long) */
290 FALSE, /* pc_relative */
292 complain_overflow_dont, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* special_function */
294 "R_METAG_GETSET_GOT", /* name */
295 FALSE, /* partial_inplace */
298 FALSE), /* pcrel_offset */
300 /* High order 16 bit GOT reference */
301 HOWTO (R_METAG_HI16_GOTPC, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_dont, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_METAG_HI16_GOTPC", /* name */
310 FALSE, /* partial_inplace */
312 0x0007fff8, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 /* Low order 16 bit GOT reference */
316 HOWTO (R_METAG_LO16_GOTPC, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE, /* pc_relative */
322 complain_overflow_dont, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_METAG_LO16_GOTPC", /* name */
325 FALSE, /* partial_inplace */
327 0x0007fff8, /* dst_mask */
328 FALSE), /* pcrel_offset */
330 /* High order 16 bit PLT */
331 HOWTO (R_METAG_HI16_PLT, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE, /* pc_relative */
337 complain_overflow_dont, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_METAG_HI16_PLT", /* name */
340 FALSE, /* partial_inplace */
342 0x0007fff8, /* dst_mask */
343 FALSE), /* pcrel_offset */
345 /* Low order 16 bit PLT */
346 HOWTO (R_METAG_LO16_PLT, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_dont, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_METAG_LO16_PLT", /* name */
355 FALSE, /* partial_inplace */
357 0xffffffff, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 HOWTO (R_METAG_RELBRANCH_PLT, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_METAG_RELBRANCH_PLT", /* name */
369 FALSE, /* partial_inplace */
371 0x00ffffe0, /* dst_mask */
372 FALSE), /* pcrel_offset */
374 /* Dummy relocs used by the linker internally. */
375 HOWTO (R_METAG_GOTOFF, /* type */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 FALSE, /* pc_relative */
381 complain_overflow_bitfield, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_METAG_GOTOFF", /* name */
384 FALSE, /* partial_inplace */
385 0xffffffff, /* src_mask */
386 0xffffffff, /* dst_mask */
387 FALSE), /* pcrel_offset */
389 HOWTO (R_METAG_PLT, /* type */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_bitfield, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 "R_METAG_GOTOFF", /* name */
398 FALSE, /* partial_inplace */
399 0xffffffff, /* src_mask */
400 0xffffffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
403 /* This is used only by the dynamic linker. The symbol should exist
404 both in the object being run and in some shared library. The
405 dynamic linker copies the data addressed by the symbol from the
406 shared library into the object, because the object being
407 run has to have the data at some particular address. */
408 HOWTO (R_METAG_COPY, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE, /* pc_relative */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* special_function */
416 "R_METAG_COPY", /* name */
417 FALSE, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE), /* pcrel_offset */
422 /* Marks a procedure linkage table entry for a symbol. */
423 HOWTO (R_METAG_JMP_SLOT, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE, /* pc_relative */
429 complain_overflow_bitfield, /* complain_on_overflow */
430 bfd_elf_generic_reloc, /* special_function */
431 "R_METAG_JMP_SLOT", /* name */
432 FALSE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
437 /* Used only by the dynamic linker. When the object is run, this
438 longword is set to the load address of the object, plus the
440 HOWTO (R_METAG_RELATIVE, /* type */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
444 FALSE, /* pc_relative */
446 complain_overflow_bitfield, /* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_METAG_RELATIVE", /* name */
449 FALSE, /* partial_inplace */
450 0xffffffff, /* src_mask */
451 0xffffffff, /* dst_mask */
452 FALSE), /* pcrel_offset */
454 HOWTO (R_METAG_GLOB_DAT, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE, /* pc_relative */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* special_function */
462 "R_METAG_GLOB_DAT", /* name */
463 FALSE, /* partial_inplace */
464 0xffffffff, /* src_mask */
465 0xffffffff, /* dst_mask */
466 FALSE), /* pcrel_offset */
468 HOWTO (R_METAG_TLS_GD, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_METAG_TLS_GD", /* name */
477 FALSE, /* partial_inplace */
479 0x0007fff8, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 HOWTO (R_METAG_TLS_LDM, /* type */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE, /* pc_relative */
488 complain_overflow_bitfield, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* special_function */
490 "R_METAG_TLS_LDM", /* name */
491 FALSE, /* partial_inplace */
493 0x0007fff8, /* dst_mask */
494 FALSE), /* pcrel_offset */
496 HOWTO (R_METAG_TLS_LDO_HI16, /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_METAG_TLS_LDO_HI16", /* name */
505 FALSE, /* partial_inplace */
507 0x0007fff8, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 HOWTO (R_METAG_TLS_LDO_LO16, /* type */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
514 FALSE, /* pc_relative */
516 complain_overflow_bitfield, /* complain_on_overflow */
517 bfd_elf_generic_reloc, /* special_function */
518 "R_METAG_TLS_LDO_LO16", /* name */
519 FALSE, /* partial_inplace */
521 0x0007fff8, /* dst_mask */
522 FALSE), /* pcrel_offset */
524 /* Dummy reloc used by the linker internally. */
525 HOWTO (R_METAG_TLS_LDO, /* type */
527 2, /* size (0 = byte, 1 = short, 2 = long) */
529 FALSE, /* pc_relative */
531 complain_overflow_bitfield, /* complain_on_overflow */
532 bfd_elf_generic_reloc, /* special_function */
533 "R_METAG_TLS_LDO", /* name */
534 FALSE, /* partial_inplace */
536 0x0007fff8, /* dst_mask */
537 FALSE), /* pcrel_offset */
539 HOWTO (R_METAG_TLS_IE, /* type */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE, /* pc_relative */
545 complain_overflow_dont, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_METAG_TLS_IE", /* name */
548 FALSE, /* partial_inplace */
550 0x0007ff80, /* dst_mask */
551 FALSE), /* pcrel_offset */
553 /* Dummy reloc used by the linker internally. */
554 HOWTO (R_METAG_TLS_IENONPIC, /* type */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
558 FALSE, /* pc_relative */
560 complain_overflow_dont, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_METAG_TLS_IENONPIC", /* name */
563 FALSE, /* partial_inplace */
565 0x0007fff8, /* dst_mask */
566 FALSE), /* pcrel_offset */
568 HOWTO (R_METAG_TLS_IENONPIC_HI16,/* type */
570 2, /* size (0 = byte, 1 = short, 2 = long) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_METAG_TLS_IENONPIC_HI16", /* name */
577 FALSE, /* partial_inplace */
579 0x0007fff8, /* dst_mask */
580 FALSE), /* pcrel_offset */
582 HOWTO (R_METAG_TLS_IENONPIC_LO16,/* type */
584 2, /* size (0 = byte, 1 = short, 2 = long) */
586 FALSE, /* pc_relative */
588 complain_overflow_dont, /* complain_on_overflow */
589 bfd_elf_generic_reloc, /* special_function */
590 "R_METAG_TLS_IENONPIC_LO16", /* name */
591 FALSE, /* partial_inplace */
593 0x0007fff8, /* dst_mask */
594 FALSE), /* pcrel_offset */
596 HOWTO (R_METAG_TLS_TPOFF, /* type */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE, /* pc_relative */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_METAG_TLS_TPOFF", /* name */
605 FALSE, /* partial_inplace */
607 0xffffffff, /* dst_mask */
608 FALSE), /* pcrel_offset */
610 HOWTO (R_METAG_TLS_DTPMOD, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 FALSE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_METAG_TLS_DTPMOD", /* name */
619 FALSE, /* partial_inplace */
621 0xffffffff, /* dst_mask */
622 FALSE), /* pcrel_offset */
624 HOWTO (R_METAG_TLS_DTPOFF, /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE, /* pc_relative */
630 complain_overflow_bitfield, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
632 "R_METAG_TLS_DTPOFF", /* name */
633 FALSE, /* partial_inplace */
635 0xffffffff, /* dst_mask */
636 FALSE), /* pcrel_offset */
638 /* Dummy reloc used by the linker internally. */
639 HOWTO (R_METAG_TLS_LE, /* type */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
643 FALSE, /* pc_relative */
645 complain_overflow_bitfield, /* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
647 "R_METAG_TLS_LE", /* name */
648 FALSE, /* partial_inplace */
650 0xffffffff, /* dst_mask */
651 FALSE), /* pcrel_offset */
653 HOWTO (R_METAG_TLS_LE_HI16, /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 FALSE, /* pc_relative */
659 complain_overflow_dont, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_METAG_TLS_LE_HI16", /* name */
662 FALSE, /* partial_inplace */
664 0x0007fff8, /* dst_mask */
665 FALSE), /* pcrel_offset */
667 HOWTO (R_METAG_TLS_LE_LO16, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 bfd_elf_generic_reloc, /* special_function */
675 "R_METAG_TLS_LE_LO16", /* name */
676 FALSE, /* partial_inplace */
678 0x0007fff8, /* dst_mask */
679 FALSE), /* pcrel_offset */
683 #define BRANCH_BITS 19
685 /* The GOT is typically accessed using a [GS]ETD instruction. The size of the
686 immediate offset which can be used in such instructions therefore limits
687 the usable size of the GOT. If the base register for the [GS]ETD (A1LbP)
688 is pointing to the base of the GOT then the size is limited to the maximum
689 11 bits unsigned dword offset, or 2^13 = 0x2000 bytes. However the offset
690 in a [GS]ETD instruction is signed, so by setting the base address register
691 to an offset of that 0x2000 byte maximum unsigned offset from the base of
692 the GOT we can use negative offsets in addition to positive. This
693 effectively doubles the usable GOT size to 0x4000 bytes. */
694 #define GOT_REG_OFFSET 0x2000
696 struct metag_reloc_map
698 bfd_reloc_code_real_type bfd_reloc_val;
699 unsigned int metag_reloc_val;
702 static const struct metag_reloc_map metag_reloc_map [] =
704 { BFD_RELOC_NONE, R_METAG_NONE },
705 { BFD_RELOC_32, R_METAG_ADDR32 },
706 { BFD_RELOC_METAG_HIADDR16, R_METAG_HIADDR16 },
707 { BFD_RELOC_METAG_LOADDR16, R_METAG_LOADDR16 },
708 { BFD_RELOC_METAG_RELBRANCH, R_METAG_RELBRANCH },
709 { BFD_RELOC_METAG_GETSETOFF, R_METAG_GETSETOFF },
710 { BFD_RELOC_VTABLE_INHERIT, R_METAG_GNU_VTINHERIT },
711 { BFD_RELOC_VTABLE_ENTRY, R_METAG_GNU_VTENTRY },
712 { BFD_RELOC_METAG_REL8, R_METAG_REL8 },
713 { BFD_RELOC_METAG_REL16, R_METAG_REL16 },
714 { BFD_RELOC_METAG_HI16_GOTOFF, R_METAG_HI16_GOTOFF },
715 { BFD_RELOC_METAG_LO16_GOTOFF, R_METAG_LO16_GOTOFF },
716 { BFD_RELOC_METAG_GETSET_GOTOFF, R_METAG_GETSET_GOTOFF },
717 { BFD_RELOC_METAG_GETSET_GOT, R_METAG_GETSET_GOT },
718 { BFD_RELOC_METAG_HI16_GOTPC, R_METAG_HI16_GOTPC },
719 { BFD_RELOC_METAG_LO16_GOTPC, R_METAG_LO16_GOTPC },
720 { BFD_RELOC_METAG_HI16_PLT, R_METAG_HI16_PLT },
721 { BFD_RELOC_METAG_LO16_PLT, R_METAG_LO16_PLT },
722 { BFD_RELOC_METAG_RELBRANCH_PLT, R_METAG_RELBRANCH_PLT },
723 { BFD_RELOC_METAG_GOTOFF, R_METAG_GOTOFF },
724 { BFD_RELOC_METAG_PLT, R_METAG_PLT },
725 { BFD_RELOC_METAG_COPY, R_METAG_COPY },
726 { BFD_RELOC_METAG_JMP_SLOT, R_METAG_JMP_SLOT },
727 { BFD_RELOC_METAG_RELATIVE, R_METAG_RELATIVE },
728 { BFD_RELOC_METAG_GLOB_DAT, R_METAG_GLOB_DAT },
729 { BFD_RELOC_METAG_TLS_GD, R_METAG_TLS_GD },
730 { BFD_RELOC_METAG_TLS_LDM, R_METAG_TLS_LDM },
731 { BFD_RELOC_METAG_TLS_LDO_HI16, R_METAG_TLS_LDO_HI16 },
732 { BFD_RELOC_METAG_TLS_LDO_LO16, R_METAG_TLS_LDO_LO16 },
733 { BFD_RELOC_METAG_TLS_LDO, R_METAG_TLS_LDO },
734 { BFD_RELOC_METAG_TLS_IE, R_METAG_TLS_IE },
735 { BFD_RELOC_METAG_TLS_IENONPIC, R_METAG_TLS_IENONPIC },
736 { BFD_RELOC_METAG_TLS_IENONPIC_HI16, R_METAG_TLS_IENONPIC_HI16 },
737 { BFD_RELOC_METAG_TLS_IENONPIC_LO16, R_METAG_TLS_IENONPIC_LO16 },
738 { BFD_RELOC_METAG_TLS_TPOFF, R_METAG_TLS_TPOFF },
739 { BFD_RELOC_METAG_TLS_DTPMOD, R_METAG_TLS_DTPMOD },
740 { BFD_RELOC_METAG_TLS_DTPOFF, R_METAG_TLS_DTPOFF },
741 { BFD_RELOC_METAG_TLS_LE, R_METAG_TLS_LE },
742 { BFD_RELOC_METAG_TLS_LE_HI16, R_METAG_TLS_LE_HI16 },
743 { BFD_RELOC_METAG_TLS_LE_LO16, R_METAG_TLS_LE_LO16 },
746 enum elf_metag_stub_type
748 metag_stub_long_branch,
749 metag_stub_long_branch_shared,
753 struct elf_metag_stub_hash_entry
755 /* Base hash table entry structure. */
756 struct bfd_hash_entry bh_root;
758 /* The stub section. */
761 /* Offset within stub_sec of the beginning of this stub. */
764 /* Given the symbol's value and its section we can determine its final
765 value when building the stubs (so the stub knows where to jump. */
766 bfd_vma target_value;
767 asection *target_section;
769 enum elf_metag_stub_type stub_type;
771 /* The symbol table entry, if any, that this was derived from. */
772 struct elf_metag_link_hash_entry *hh;
774 /* And the reloc addend that this was derived from. */
777 /* Where this stub is being called from, or, in the case of combined
778 stub sections, the first input section in the group. */
782 struct elf_metag_link_hash_entry
784 struct elf_link_hash_entry eh;
786 /* A pointer to the most recently used stub hash entry against this
788 struct elf_metag_stub_hash_entry *hsh_cache;
790 /* Used to count relocations for delayed sizing of relocation
792 struct elf_metag_dyn_reloc_entry {
794 /* Next relocation in the chain. */
795 struct elf_metag_dyn_reloc_entry *hdh_next;
797 /* The input section of the reloc. */
800 /* Number of relocs copied in this section. */
803 /* Number of relative relocs copied for the input section. */
804 bfd_size_type relative_count;
809 GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_IE = 2, GOT_TLS_LDM = 4, GOT_TLS_GD = 8
813 struct elf_metag_link_hash_table
815 /* The main hash table. */
816 struct elf_link_hash_table etab;
818 /* The stub hash table. */
819 struct bfd_hash_table bstab;
821 /* Linker stub bfd. */
824 /* Linker call-backs. */
825 asection * (*add_stub_section) (const char *, asection *);
826 void (*layout_sections_again) (void);
828 /* Array to keep track of which stub sections have been created, and
829 information on stub grouping. */
832 /* This is the section to which stubs in the group will be
835 /* The stub section. */
839 /* Assorted information used by elf_metag_size_stubs. */
840 unsigned int bfd_count;
842 asection **input_list;
843 Elf_Internal_Sym **all_local_syms;
845 /* Short-cuts to get to dynamic linker sections. */
854 /* Small local sym cache. */
855 struct sym_cache sym_cache;
857 /* Data for LDM relocations. */
860 bfd_signed_vma refcount;
865 /* Return the base vma address which should be subtracted from the
866 real address when resolving a dtpoff relocation. This is PT_TLS
869 dtpoff_base (struct bfd_link_info *info)
871 /* If tls_sec is NULL, we should have signalled an error already. */
872 if (elf_hash_table (info)->tls_sec == NULL)
874 return elf_hash_table (info)->tls_sec->vma;
877 /* Return the relocation value for R_METAG_TLS_IE */
879 tpoff (struct bfd_link_info *info, bfd_vma address)
881 /* If tls_sec is NULL, we should have signalled an error already. */
882 if (elf_hash_table (info)->tls_sec == NULL)
884 /* METAG TLS ABI is variant I and static TLS blocks start just after
885 tcbhead structure which has 2 pointer fields. */
886 return (address - elf_hash_table (info)->tls_sec->vma
887 + align_power ((bfd_vma) 8,
888 elf_hash_table (info)->tls_sec->alignment_power));
892 metag_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
894 Elf_Internal_Rela *dst)
898 r_type = ELF32_R_TYPE (dst->r_info);
899 BFD_ASSERT (r_type < (unsigned int) R_METAG_MAX);
900 cache_ptr->howto = & elf_metag_howto_table [r_type];
903 static reloc_howto_type *
904 metag_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
905 bfd_reloc_code_real_type code)
909 for (i = 0; i < sizeof (metag_reloc_map) / sizeof (metag_reloc_map[0]); i++)
910 if (metag_reloc_map [i].bfd_reloc_val == code)
911 return & elf_metag_howto_table [metag_reloc_map[i].metag_reloc_val];
916 static reloc_howto_type *
917 metag_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
922 for (i = 0; i < sizeof (elf_metag_howto_table) / sizeof (elf_metag_howto_table[0]); i++)
923 if (elf_metag_howto_table[i].name != NULL
924 && strcasecmp (elf_metag_howto_table[i].name, r_name) == 0)
925 return &elf_metag_howto_table[i];
930 /* Various hash macros and functions. */
931 #define metag_link_hash_table(p) \
932 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
933 == METAG_ELF_DATA ? ((struct elf_metag_link_hash_table *) ((p)->hash)) : NULL)
935 #define metag_elf_hash_entry(ent) \
936 ((struct elf_metag_link_hash_entry *)(ent))
938 #define metag_stub_hash_entry(ent) \
939 ((struct elf_metag_stub_hash_entry *)(ent))
941 #define metag_stub_hash_lookup(table, string, create, copy) \
942 ((struct elf_metag_stub_hash_entry *) \
943 bfd_hash_lookup ((table), (string), (create), (copy)))
945 #define metag_elf_local_got_tls_type(abfd) \
946 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info)))
948 /* Assorted hash table functions. */
950 /* Initialize an entry in the stub hash table. */
952 static struct bfd_hash_entry *
953 stub_hash_newfunc (struct bfd_hash_entry *entry,
954 struct bfd_hash_table *table,
957 /* Allocate the structure if it has not already been allocated by a
961 entry = bfd_hash_allocate (table,
962 sizeof (struct elf_metag_stub_hash_entry));
967 /* Call the allocation method of the superclass. */
968 entry = bfd_hash_newfunc (entry, table, string);
971 struct elf_metag_stub_hash_entry *hsh;
973 /* Initialize the local fields. */
974 hsh = (struct elf_metag_stub_hash_entry *) entry;
975 hsh->stub_sec = NULL;
976 hsh->stub_offset = 0;
977 hsh->target_value = 0;
978 hsh->target_section = NULL;
979 hsh->stub_type = metag_stub_long_branch;
987 /* Initialize an entry in the link hash table. */
989 static struct bfd_hash_entry *
990 metag_link_hash_newfunc (struct bfd_hash_entry *entry,
991 struct bfd_hash_table *table,
994 /* Allocate the structure if it has not already been allocated by a
998 entry = bfd_hash_allocate (table,
999 sizeof (struct elf_metag_link_hash_entry));
1004 /* Call the allocation method of the superclass. */
1005 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1008 struct elf_metag_link_hash_entry *hh;
1010 /* Initialize the local fields. */
1011 hh = (struct elf_metag_link_hash_entry *) entry;
1012 hh->hsh_cache = NULL;
1013 hh->dyn_relocs = NULL;
1014 hh->tls_type = GOT_UNKNOWN;
1020 /* Create the derived linker hash table. The Meta ELF port uses the derived
1021 hash table to keep information specific to the Meta ELF linker (without
1022 using static variables). */
1024 static struct bfd_link_hash_table *
1025 elf_metag_link_hash_table_create (bfd *abfd)
1027 struct elf_metag_link_hash_table *htab;
1028 bfd_size_type amt = sizeof (*htab);
1030 htab = bfd_malloc (amt);
1034 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd,
1035 metag_link_hash_newfunc,
1036 sizeof (struct elf_metag_link_hash_entry),
1043 /* Init the stub hash table too. */
1044 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
1045 sizeof (struct elf_metag_stub_hash_entry)))
1048 htab->stub_bfd = NULL;
1049 htab->add_stub_section = NULL;
1050 htab->layout_sections_again = NULL;
1051 htab->stub_group = NULL;
1053 htab->sgotplt = NULL;
1054 htab->srelgot = NULL;
1056 htab->srelplt = NULL;
1057 htab->sdynbss = NULL;
1058 htab->srelbss = NULL;
1059 htab->sym_cache.abfd = NULL;
1060 htab->tls_ldm_got.refcount = 0;
1062 return &htab->etab.root;
1065 /* Free the derived linker hash table. */
1068 elf_metag_link_hash_table_free (struct bfd_link_hash_table *btab)
1070 struct elf_metag_link_hash_table *htab
1071 = (struct elf_metag_link_hash_table *) btab;
1073 bfd_hash_table_free (&htab->bstab);
1074 _bfd_generic_link_hash_table_free (btab);
1077 /* Section name for stubs is the associated section name plus this
1079 #define STUB_SUFFIX ".stub"
1081 /* Build a name for an entry in the stub hash table. */
1084 metag_stub_name (const asection *input_section,
1085 const asection *sym_sec,
1086 const struct elf_metag_link_hash_entry *hh,
1087 const Elf_Internal_Rela *rel)
1094 len = 8 + 1 + strlen (hh->eh.root.root.string) + 1 + 8 + 1;
1095 stub_name = bfd_malloc (len);
1096 if (stub_name != NULL)
1098 sprintf (stub_name, "%08x_%s+%x",
1099 input_section->id & 0xffffffff,
1100 hh->eh.root.root.string,
1101 (int) rel->r_addend & 0xffffffff);
1106 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1107 stub_name = bfd_malloc (len);
1108 if (stub_name != NULL)
1110 sprintf (stub_name, "%08x_%x:%x+%x",
1111 input_section->id & 0xffffffff,
1112 sym_sec->id & 0xffffffff,
1113 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
1114 (int) rel->r_addend & 0xffffffff);
1120 /* Look up an entry in the stub hash. Stub entries are cached because
1121 creating the stub name takes a bit of time. */
1123 static struct elf_metag_stub_hash_entry *
1124 metag_get_stub_entry (const asection *input_section,
1125 const asection *sym_sec,
1126 struct elf_metag_link_hash_entry *hh,
1127 const Elf_Internal_Rela *rel,
1128 struct elf_metag_link_hash_table *htab)
1130 struct elf_metag_stub_hash_entry *hsh;
1131 const asection *id_sec;
1133 /* If this input section is part of a group of sections sharing one
1134 stub section, then use the id of the first section in the group.
1135 Stub names need to include a section id, as there may well be
1136 more than one stub used to reach say, printf, and we need to
1137 distinguish between them. */
1138 id_sec = htab->stub_group[input_section->id].link_sec;
1140 if (hh != NULL && hh->hsh_cache != NULL
1141 && hh->hsh_cache->hh == hh
1142 && hh->hsh_cache->id_sec == id_sec)
1144 hsh = hh->hsh_cache;
1150 stub_name = metag_stub_name (id_sec, sym_sec, hh, rel);
1151 if (stub_name == NULL)
1154 hsh = metag_stub_hash_lookup (&htab->bstab,
1155 stub_name, FALSE, FALSE);
1158 hh->hsh_cache = hsh;
1166 /* Add a new stub entry to the stub hash. Not all fields of the new
1167 stub entry are initialised. */
1169 static struct elf_metag_stub_hash_entry *
1170 metag_add_stub (const char *stub_name,
1172 struct elf_metag_link_hash_table *htab)
1176 struct elf_metag_stub_hash_entry *hsh;
1178 link_sec = htab->stub_group[section->id].link_sec;
1179 stub_sec = htab->stub_group[section->id].stub_sec;
1180 if (stub_sec == NULL)
1182 stub_sec = htab->stub_group[link_sec->id].stub_sec;
1183 if (stub_sec == NULL)
1189 namelen = strlen (link_sec->name);
1190 len = namelen + sizeof (STUB_SUFFIX);
1191 s_name = bfd_alloc (htab->stub_bfd, len);
1195 memcpy (s_name, link_sec->name, namelen);
1196 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
1198 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
1199 if (stub_sec == NULL)
1201 htab->stub_group[link_sec->id].stub_sec = stub_sec;
1203 htab->stub_group[section->id].stub_sec = stub_sec;
1206 /* Enter this entry into the linker stub hash table. */
1207 hsh = metag_stub_hash_lookup (&htab->bstab, stub_name,
1211 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
1217 hsh->stub_sec = stub_sec;
1218 hsh->stub_offset = 0;
1219 hsh->id_sec = link_sec;
1223 /* Check a signed integer value can be represented in the given number
1227 within_signed_range (int value, unsigned int bits)
1229 int min_val = -(1 << (bits - 1));
1230 int max_val = (1 << (bits - 1)) - 1;
1231 return (value <= max_val) && (value >= min_val);
1234 /* Perform a relocation as part of a final link. */
1236 static bfd_reloc_status_type
1237 metag_final_link_relocate (reloc_howto_type *howto,
1239 asection *input_section,
1241 Elf_Internal_Rela *rel,
1243 struct elf_metag_link_hash_entry *hh,
1244 struct elf_metag_link_hash_table *htab,
1247 bfd_reloc_status_type r = bfd_reloc_ok;
1248 bfd_byte *hit_data = contents + rel->r_offset;
1249 int opcode, op_shift, op_extended, l1, l2;
1250 bfd_signed_vma srel, addend = rel->r_addend;
1251 struct elf_metag_stub_hash_entry *hsh = NULL;
1254 /* Find out where we are and where we're going. */
1255 location = (rel->r_offset +
1256 input_section->output_offset +
1257 input_section->output_section->vma);
1259 switch (howto->type)
1261 case R_METAG_RELBRANCH:
1262 case R_METAG_RELBRANCH_PLT:
1263 /* Make it a pc relative offset. */
1264 relocation -= location;
1266 case R_METAG_TLS_GD:
1267 case R_METAG_TLS_IE:
1268 relocation -= elf_gp (input_section->output_section->owner);
1274 switch (howto->type)
1276 case R_METAG_RELBRANCH_PLT:
1277 case R_METAG_RELBRANCH:
1278 opcode = bfd_get_32 (input_bfd, hit_data);
1280 srel = (bfd_signed_vma) relocation;
1283 /* If the branch is out of reach, then redirect the
1284 call to the local stub for this function. */
1285 if (srel > ((1 << (BRANCH_BITS + 1)) - 1) ||
1286 (srel < - (1 << (BRANCH_BITS + 1))))
1288 if (sym_sec == NULL)
1291 hsh = metag_get_stub_entry (input_section, sym_sec,
1294 return bfd_reloc_undefined;
1296 /* Munge up the value and addend so that we call the stub
1297 rather than the procedure directly. */
1298 srel = (hsh->stub_offset
1299 + hsh->stub_sec->output_offset
1300 + hsh->stub_sec->output_section->vma);
1306 if (!within_signed_range (srel, BRANCH_BITS))
1308 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1311 return bfd_reloc_overflow;
1314 opcode &= ~(0x7ffff << 5);
1315 opcode |= ((srel & 0x7ffff) << 5);
1317 bfd_put_32 (input_bfd, opcode, hit_data);
1319 case R_METAG_GETSETOFF:
1320 case R_METAG_GETSET_GOT:
1321 case R_METAG_GETSET_GOTOFF:
1322 opcode = bfd_get_32 (input_bfd, hit_data);
1324 srel = (bfd_signed_vma) relocation;
1327 /* Is this a standard or extended GET/SET? */
1328 if ((opcode & 0xf0000000) == 0xa0000000)
1330 /* Extended GET/SET. */
1337 /* Standard GET/SET. */
1338 l1 = opcode & 0x01000000;
1339 l2 = opcode & 0x04000000;
1343 /* Calculate the width of the GET/SET and how much we need to
1344 shift the result by. */
1356 /* GET/SET offsets are scaled by the width of the transfer. */
1357 srel = srel >> op_shift;
1359 /* Extended GET/SET has signed 12 bits of offset, standard has
1363 if (!within_signed_range (srel, 12))
1365 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1368 return bfd_reloc_overflow;
1370 opcode &= ~(0xfff << 7);
1371 opcode |= ((srel & 0xfff) << 7);
1375 if (!within_signed_range (srel, 5))
1377 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1380 return bfd_reloc_overflow;
1382 opcode &= ~(0x3f << 8);
1383 opcode |= ((srel & 0x3f) << 8);
1386 bfd_put_32 (input_bfd, opcode, hit_data);
1388 case R_METAG_TLS_GD:
1389 case R_METAG_TLS_LDM:
1390 opcode = bfd_get_32 (input_bfd, hit_data);
1392 if ((bfd_signed_vma)relocation < 0)
1394 /* sign extend immediate */
1395 if ((opcode & 0xf2000001) == 0x02000000)
1397 /* ADD De.e,Dx.r,#I16 */
1401 return bfd_reloc_overflow;
1404 bfd_put_32 (input_bfd, opcode, hit_data);
1406 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1407 contents, rel->r_offset,
1408 relocation, rel->r_addend);
1411 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1412 contents, rel->r_offset,
1413 relocation, rel->r_addend);
1419 /* This is defined because R_METAG_NONE != 0...
1420 See RELOC_AGAINST_DISCARDED_SECTION for details. */
1421 #define METAG_RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
1422 rel, relend, howto, contents) \
1424 _bfd_clear_contents (howto, input_bfd, input_section, \
1425 contents + rel->r_offset); \
1427 if (info->relocatable \
1428 && (input_section->flags & SEC_DEBUGGING)) \
1430 /* Only remove relocations in debug sections since other \
1431 sections may require relocations. */ \
1432 Elf_Internal_Shdr *rel_hdr; \
1434 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
1436 /* Avoid empty output section. */ \
1437 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
1439 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1440 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
1441 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1443 memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
1445 input_section->reloc_count--; \
1452 rel->r_info = R_METAG_NONE; \
1453 rel->r_addend = 0; \
1457 /* Relocate a META ELF section.
1459 The RELOCATE_SECTION function is called by the new ELF backend linker
1460 to handle the relocations for a section.
1462 The relocs are always passed as Rela structures; if the section
1463 actually uses Rel structures, the r_addend field will always be
1466 This function is responsible for adjusting the section contents as
1467 necessary, and (if using Rela relocs and generating a relocatable
1468 output file) adjusting the reloc addend as necessary.
1470 This function does not have to worry about setting the reloc
1471 address or the reloc symbol index.
1473 LOCAL_SYMS is a pointer to the swapped in local symbols.
1475 LOCAL_SECTIONS is an array giving the section in the input file
1476 corresponding to the st_shndx field of each local symbol.
1478 The global hash table entry for the global symbols can be found
1479 via elf_sym_hashes (input_bfd).
1481 When generating relocatable output, this function must handle
1482 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1483 going to be the section symbol corresponding to the output
1484 section, which means that the addend must be adjusted
1488 elf_metag_relocate_section (bfd *output_bfd,
1489 struct bfd_link_info *info,
1491 asection *input_section,
1493 Elf_Internal_Rela *relocs,
1494 Elf_Internal_Sym *local_syms,
1495 asection **local_sections)
1497 bfd_vma *local_got_offsets;
1498 Elf_Internal_Shdr *symtab_hdr;
1499 struct elf_link_hash_entry **eh_syms;
1500 struct elf_metag_link_hash_table *htab;
1501 Elf_Internal_Rela *rel;
1502 Elf_Internal_Rela *relend;
1505 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1506 eh_syms = elf_sym_hashes (input_bfd);
1507 relend = relocs + input_section->reloc_count;
1509 htab = metag_link_hash_table (info);
1510 local_got_offsets = elf_local_got_offsets (input_bfd);
1514 for (rel = relocs; rel < relend; rel ++)
1516 reloc_howto_type *howto;
1517 unsigned long r_symndx;
1518 Elf_Internal_Sym *sym;
1520 struct elf_metag_link_hash_entry *hh;
1522 bfd_reloc_status_type r;
1526 r_type = ELF32_R_TYPE (rel->r_info);
1528 if (r_type == R_METAG_GNU_VTINHERIT
1529 || r_type == R_METAG_GNU_VTENTRY
1530 || r_type == R_METAG_NONE)
1533 r_symndx = ELF32_R_SYM (rel->r_info);
1535 howto = elf_metag_howto_table + ELF32_R_TYPE (rel->r_info);
1540 if (r_symndx < symtab_hdr->sh_info)
1542 sym = local_syms + r_symndx;
1543 sec = local_sections [r_symndx];
1544 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1546 name = bfd_elf_string_from_elf_section
1547 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1548 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1552 struct elf_link_hash_entry *eh;
1553 bfd_boolean unresolved_reloc, warned;
1555 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1556 r_symndx, symtab_hdr, eh_syms,
1557 eh, sec, relocation,
1558 unresolved_reloc, warned);
1560 name = eh->root.root.string;
1561 hh = (struct elf_metag_link_hash_entry *) eh;
1564 if (sec != NULL && discarded_section (sec))
1565 METAG_RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1566 rel, relend, howto, contents);
1568 if (info->relocatable)
1573 case R_METAG_ADDR32:
1574 case R_METAG_RELBRANCH:
1575 if ((input_section->flags & SEC_ALLOC) == 0)
1579 && r_symndx != STN_UNDEF
1580 && (input_section->flags & SEC_ALLOC) != 0
1581 && (r_type != R_METAG_RELBRANCH
1582 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
1585 && hh->eh.dynindx != -1
1586 && !hh->eh.non_got_ref
1587 && ((hh->eh.def_dynamic
1588 && !hh->eh.def_regular)
1589 || hh->eh.root.type == bfd_link_hash_undefweak
1590 || hh->eh.root.type == bfd_link_hash_undefined)))
1592 Elf_Internal_Rela outrel;
1593 bfd_boolean skip, relocate;
1596 /* When generating a shared object, these relocations
1597 are copied into the output file to be resolved at run
1600 sreloc = elf_section_data (input_section)->sreloc;
1601 BFD_ASSERT (sreloc != NULL);
1606 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1610 if (outrel.r_offset == (bfd_vma) -1)
1612 else if (outrel.r_offset == (bfd_vma) -2)
1613 skip = TRUE, relocate = TRUE;
1614 outrel.r_offset += (input_section->output_section->vma
1615 + input_section->output_offset);
1619 memset (&outrel, 0, sizeof outrel);
1620 outrel.r_info = ELF32_R_INFO (0, R_METAG_NONE);
1622 else if (r_type == R_METAG_RELBRANCH)
1624 BFD_ASSERT (hh != NULL && hh->eh.dynindx != -1);
1625 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1626 outrel.r_addend = rel->r_addend;
1630 /* h->dynindx may be -1 if this symbol was marked to
1633 || ((info->symbolic || hh->eh.dynindx == -1)
1634 && hh->eh.def_regular))
1637 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1638 outrel.r_addend = relocation + rel->r_addend;
1642 BFD_ASSERT (hh->eh.dynindx != -1);
1643 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1644 outrel.r_addend = rel->r_addend;
1648 loc = sreloc->contents;
1649 loc += sreloc->reloc_count * sizeof(Elf32_External_Rela);
1650 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1651 ++sreloc->reloc_count;
1653 /* If this reloc is against an external symbol, we do
1654 not want to fiddle with the addend. Otherwise, we
1655 need to include the symbol value so that it becomes
1656 an addend for the dynamic reloc. */
1662 case R_METAG_RELBRANCH_PLT:
1663 /* Relocation is to the entry for this symbol in the
1664 procedure linkage table. */
1669 if (hh->eh.forced_local)
1672 if (hh->eh.plt.offset == (bfd_vma) -1 ||
1675 /* We didn't make a PLT entry for this symbol. This
1676 happens when statically linking PIC code, or when
1677 using -Bsymbolic. */
1681 relocation = (htab->splt->output_section->vma
1682 + htab->splt->output_offset
1683 + hh->eh.plt.offset);
1685 case R_METAG_HI16_GOTPC:
1686 case R_METAG_LO16_GOTPC:
1687 BFD_ASSERT (htab->sgot != NULL);
1689 relocation = (htab->sgot->output_section->vma +
1690 htab->sgot->output_offset);
1691 relocation += GOT_REG_OFFSET;
1692 relocation -= (input_section->output_section->vma
1693 + input_section->output_offset
1696 case R_METAG_HI16_GOTOFF:
1697 case R_METAG_LO16_GOTOFF:
1698 case R_METAG_GETSET_GOTOFF:
1699 BFD_ASSERT (htab->sgot != NULL);
1701 relocation -= (htab->sgot->output_section->vma +
1702 htab->sgot->output_offset);
1703 relocation -= GOT_REG_OFFSET;
1705 case R_METAG_GETSET_GOT:
1708 bfd_boolean do_got = 0;
1710 /* Relocation is to the entry for this symbol in the
1711 global offset table. */
1716 off = hh->eh.got.offset;
1717 dyn = htab->etab.dynamic_sections_created;
1718 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
1721 /* If we aren't going to call finish_dynamic_symbol,
1722 then we need to handle initialisation of the .got
1723 entry and create needed relocs here. Since the
1724 offset must always be a multiple of 4, we use the
1725 least significant bit to record whether we have
1726 initialised it already. */
1731 hh->eh.got.offset |= 1;
1738 /* Local symbol case. */
1739 if (local_got_offsets == NULL)
1742 off = local_got_offsets[r_symndx];
1744 /* The offset must always be a multiple of 4. We use
1745 the least significant bit to record whether we have
1746 already generated the necessary reloc. */
1751 local_got_offsets[r_symndx] |= 1;
1760 /* Output a dynamic relocation for this GOT entry.
1761 In this case it is relative to the base of the
1762 object because the symbol index is zero. */
1763 Elf_Internal_Rela outrel;
1765 asection *s = htab->srelgot;
1767 outrel.r_offset = (off
1768 + htab->sgot->output_offset
1769 + htab->sgot->output_section->vma);
1770 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1771 outrel.r_addend = relocation;
1773 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1774 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1777 bfd_put_32 (output_bfd, relocation,
1778 htab->sgot->contents + off);
1781 if (off >= (bfd_vma) -2)
1784 relocation = off - GOT_REG_OFFSET;
1787 case R_METAG_TLS_GD:
1788 case R_METAG_TLS_IE:
1790 /* XXXMJF There is room here for optimisations. For example
1791 converting from GD->IE, etc. */
1796 if (htab->sgot == NULL)
1803 dyn = htab->etab.dynamic_sections_created;
1805 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &hh->eh)
1807 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
1809 indx = hh->eh.dynindx;
1811 off = hh->eh.got.offset;
1812 tls_type = hh->tls_type;
1816 /* Local symbol case. */
1817 if (local_got_offsets == NULL)
1820 off = local_got_offsets[r_symndx];
1821 tls_type = metag_elf_local_got_tls_type (input_bfd) [r_symndx];
1824 if (tls_type == GOT_UNKNOWN)
1831 bfd_boolean need_relocs = FALSE;
1832 Elf_Internal_Rela outrel;
1833 bfd_byte *loc = NULL;
1836 /* The GOT entries have not been initialized yet. Do it
1837 now, and emit any relocations. If both an IE GOT and a
1838 GD GOT are necessary, we emit the GD first. */
1840 if ((info->shared || indx != 0)
1842 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
1843 || hh->eh.root.type != bfd_link_hash_undefweak))
1846 loc = htab->srelgot->contents;
1847 /* FIXME (CAO): Should this be reloc_count++ ? */
1848 loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
1851 if (tls_type & GOT_TLS_GD)
1855 outrel.r_offset = (cur_off
1856 + htab->sgot->output_section->vma
1857 + htab->sgot->output_offset);
1858 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_DTPMOD);
1859 outrel.r_addend = 0;
1860 bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
1862 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1863 htab->srelgot->reloc_count++;
1864 loc += sizeof (Elf32_External_Rela);
1867 bfd_put_32 (output_bfd, 0,
1868 htab->sgot->contents + cur_off + 4);
1871 bfd_put_32 (output_bfd, 0,
1872 htab->sgot->contents + cur_off + 4);
1873 outrel.r_info = ELF32_R_INFO (indx,
1874 R_METAG_TLS_DTPOFF);
1875 outrel.r_offset += 4;
1876 bfd_elf32_swap_reloca_out (output_bfd,
1878 htab->srelgot->reloc_count++;
1879 loc += sizeof (Elf32_External_Rela);
1884 /* We don't support changing the TLS model. */
1891 if (tls_type & GOT_TLS_IE)
1895 outrel.r_offset = (cur_off
1896 + htab->sgot->output_section->vma
1897 + htab->sgot->output_offset);
1898 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_TPOFF);
1901 outrel.r_addend = relocation - dtpoff_base (info);
1903 outrel.r_addend = 0;
1905 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1906 htab->srelgot->reloc_count++;
1907 loc += sizeof (Elf32_External_Rela);
1910 bfd_put_32 (output_bfd, tpoff (info, relocation),
1911 htab->sgot->contents + cur_off);
1917 hh->eh.got.offset |= 1;
1919 local_got_offsets[r_symndx] |= 1;
1922 /* Add the base of the GOT to the relocation value. */
1923 relocation = off - GOT_REG_OFFSET;
1928 case R_METAG_TLS_IENONPIC_HI16:
1929 case R_METAG_TLS_IENONPIC_LO16:
1930 case R_METAG_TLS_LE_HI16:
1931 case R_METAG_TLS_LE_LO16:
1934 (*_bfd_error_handler)
1935 (_("%B(%A+0x%lx): R_METAG_TLS_LE/IENONPIC relocation not permitted in shared object"),
1936 input_bfd, input_section,
1937 (long) rel->r_offset, howto->name);
1941 relocation = tpoff (info, relocation);
1943 case R_METAG_TLS_LDO_HI16:
1944 case R_METAG_TLS_LDO_LO16:
1946 relocation = tpoff (info, relocation);
1948 relocation -= dtpoff_base (info);
1950 case R_METAG_TLS_LDM:
1954 if (htab->sgot == NULL)
1956 off = htab->tls_ldm_got.offset;
1961 Elf_Internal_Rela outrel;
1964 outrel.r_offset = (off
1965 + htab->sgot->output_section->vma
1966 + htab->sgot->output_offset);
1968 outrel.r_addend = 0;
1969 outrel.r_info = ELF32_R_INFO (0, R_METAG_TLS_DTPMOD);
1970 loc = htab->srelgot->contents;
1971 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1972 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1973 htab->tls_ldm_got.offset |= 1;
1976 relocation = off - GOT_REG_OFFSET;
1983 r = metag_final_link_relocate (howto, input_bfd, input_section,
1984 contents, rel, relocation, hh, htab,
1987 if (r != bfd_reloc_ok)
1989 const char * msg = (const char *) NULL;
1993 case bfd_reloc_overflow:
1994 r = info->callbacks->reloc_overflow
1995 (info, (hh ? &hh->eh.root : NULL), name, howto->name,
1996 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1999 case bfd_reloc_undefined:
2000 r = info->callbacks->undefined_symbol
2001 (info, name, input_bfd, input_section, rel->r_offset,
2005 case bfd_reloc_outofrange:
2006 msg = _("internal error: out of range error");
2009 case bfd_reloc_notsupported:
2010 msg = _("internal error: unsupported relocation error");
2013 case bfd_reloc_dangerous:
2014 msg = _("internal error: dangerous relocation");
2018 msg = _("internal error: unknown error");
2023 r = info->callbacks->warning
2024 (info, msg, name, input_bfd, input_section, rel->r_offset);
2034 /* Create the .plt and .got sections, and set up our hash table
2035 short-cuts to various dynamic sections. */
2038 elf_metag_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2040 struct elf_metag_link_hash_table *htab;
2041 struct elf_link_hash_entry *eh;
2042 struct bfd_link_hash_entry *bh;
2043 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2045 /* Don't try to create the .plt and .got twice. */
2046 htab = metag_link_hash_table (info);
2047 if (htab->splt != NULL)
2050 /* Call the generic code to do most of the work. */
2051 if (! _bfd_elf_create_dynamic_sections (abfd, info))
2054 htab->sgot = bfd_get_linker_section (abfd, ".got");
2058 htab->sgotplt = bfd_make_section_with_flags (abfd, ".got.plt",
2059 (SEC_ALLOC | SEC_LOAD |
2062 SEC_LINKER_CREATED));
2063 if (htab->sgotplt == NULL
2064 || !bfd_set_section_alignment (abfd, htab->sgotplt, 2))
2067 /* Define the symbol __GLOBAL_OFFSET_TABLE__ at the start of the .got
2068 section. We don't do this in the linker script because we don't want
2069 to define the symbol if we are not creating a global offset table. */
2071 if (!(_bfd_generic_link_add_one_symbol
2072 (info, abfd, "__GLOBAL_OFFSET_TABLE__", BSF_GLOBAL, htab->sgot,
2073 (bfd_vma) 0, NULL, FALSE, bed->collect, &bh)))
2075 eh = (struct elf_link_hash_entry *) bh;
2076 eh->def_regular = 1;
2077 eh->type = STT_OBJECT;
2078 eh->other = STV_HIDDEN;
2080 if (! info->executable
2081 && ! bfd_elf_link_record_dynamic_symbol (info, eh))
2084 elf_hash_table (info)->hgot = eh;
2086 htab->splt = bfd_get_linker_section (abfd, ".plt");
2087 htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt");
2089 htab->srelgot = bfd_get_linker_section (abfd, ".rela.got");
2091 htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss");
2092 htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss");
2097 /* Look through the relocs for a section during the first phase, and
2098 calculate needed space in the global offset table, procedure linkage
2099 table, and dynamic reloc sections. At this point we haven't
2100 necessarily read all the input files. */
2103 elf_metag_check_relocs (bfd *abfd,
2104 struct bfd_link_info *info,
2106 const Elf_Internal_Rela *relocs)
2108 Elf_Internal_Shdr *symtab_hdr;
2109 struct elf_link_hash_entry **eh_syms;
2110 const Elf_Internal_Rela *rel;
2111 const Elf_Internal_Rela *rel_end;
2112 struct elf_metag_link_hash_table *htab;
2115 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
2117 if (info->relocatable)
2120 htab = metag_link_hash_table (info);
2121 dynobj = htab->etab.dynobj;
2122 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2123 eh_syms = elf_sym_hashes (abfd);
2129 rel_end = relocs + sec->reloc_count;
2130 for (rel = relocs; rel < rel_end; rel++)
2133 struct elf_metag_link_hash_entry *hh;
2134 Elf_Internal_Sym *isym;
2135 unsigned long r_symndx;
2137 r_symndx = ELF32_R_SYM (rel->r_info);
2138 r_type = ELF32_R_TYPE (rel->r_info);
2139 if (r_symndx < symtab_hdr->sh_info)
2141 /* A local symbol. */
2142 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2153 hh = (struct elf_metag_link_hash_entry *)
2154 eh_syms[r_symndx - symtab_hdr->sh_info];
2155 while (hh->eh.root.type == bfd_link_hash_indirect
2156 || hh->eh.root.type == bfd_link_hash_warning)
2157 hh = (struct elf_metag_link_hash_entry *) hh->eh.root.u.i.link;
2160 /* Some relocs require a global offset table. */
2161 if (htab->sgot == NULL)
2165 case R_METAG_TLS_GD:
2166 case R_METAG_TLS_LDM:
2167 case R_METAG_TLS_IE:
2169 info->flags |= DF_STATIC_TLS;
2172 case R_METAG_HI16_GOTOFF:
2173 case R_METAG_LO16_GOTOFF:
2174 case R_METAG_GETSET_GOTOFF:
2175 case R_METAG_GETSET_GOT:
2176 case R_METAG_HI16_GOTPC:
2177 case R_METAG_LO16_GOTPC:
2179 htab->etab.dynobj = dynobj = abfd;
2180 if (!elf_metag_create_dynamic_sections (dynobj, info))
2191 case R_METAG_TLS_IE:
2192 case R_METAG_TLS_GD:
2193 case R_METAG_GETSET_GOT:
2197 tls_type = GOT_NORMAL;
2199 case R_METAG_TLS_IE:
2200 tls_type = GOT_TLS_IE;
2202 case R_METAG_TLS_GD:
2203 tls_type = GOT_TLS_GD;
2209 hh->eh.got.refcount += 1;
2210 old_tls_type = hh->tls_type;
2214 bfd_signed_vma *local_got_refcounts;
2216 /* This is a global offset table entry for a local
2218 local_got_refcounts = elf_local_got_refcounts (abfd);
2219 if (local_got_refcounts == NULL)
2223 size = symtab_hdr->sh_info;
2224 size *= sizeof (bfd_signed_vma);
2225 /* Add in space to store the local GOT TLS types. */
2226 size += symtab_hdr->sh_info;
2227 local_got_refcounts = ((bfd_signed_vma *)
2228 bfd_zalloc (abfd, size));
2229 if (local_got_refcounts == NULL)
2231 elf_local_got_refcounts (abfd) = local_got_refcounts;
2232 memset (metag_elf_local_got_tls_type (abfd),
2233 GOT_UNKNOWN, symtab_hdr->sh_info);
2235 local_got_refcounts[r_symndx] += 1;
2236 old_tls_type = metag_elf_local_got_tls_type (abfd) [r_symndx];
2239 if (old_tls_type != tls_type)
2243 hh->tls_type = tls_type;
2247 metag_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
2253 case R_METAG_TLS_LDM:
2254 metag_link_hash_table (info)->tls_ldm_got.refcount += 1;
2257 case R_METAG_RELBRANCH_PLT:
2258 /* This symbol requires a procedure linkage table entry. We
2259 actually build the entry in adjust_dynamic_symbol,
2260 because this might be a case of linking PIC code without
2261 linking in any dynamic objects, in which case we don't
2262 need to generate a procedure linkage table after all. */
2264 /* If this is a local symbol, we resolve it directly without
2265 creating a procedure linkage table entry. */
2269 if (hh->eh.forced_local)
2272 hh->eh.needs_plt = 1;
2273 hh->eh.plt.refcount += 1;
2276 case R_METAG_HIADDR16:
2277 case R_METAG_LOADDR16:
2278 /* Let's help debug shared library creation. These relocs
2279 cannot be used in shared libs. Don't error out for
2280 sections we don't care about, such as debug sections or
2281 non-constant sections. */
2283 && (sec->flags & SEC_ALLOC) != 0
2284 && (sec->flags & SEC_READONLY) != 0)
2289 name = hh->eh.root.root.string;
2291 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2292 (*_bfd_error_handler)
2293 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
2294 abfd, elf_metag_howto_table[r_type].name, name);
2295 bfd_set_error (bfd_error_bad_value);
2300 case R_METAG_ADDR32:
2301 case R_METAG_RELBRANCH:
2302 case R_METAG_GETSETOFF:
2303 if (hh != NULL && !info->shared)
2305 hh->eh.non_got_ref = 1;
2306 hh->eh.plt.refcount += 1;
2309 /* If we are creating a shared library, and this is a reloc
2310 against a global symbol, or a non PC relative reloc
2311 against a local symbol, then we need to copy the reloc
2312 into the shared library. However, if we are linking with
2313 -Bsymbolic, we do not need to copy a reloc against a
2314 global symbol which is defined in an object we are
2315 including in the link (i.e., DEF_REGULAR is set). At
2316 this point we have not seen all the input files, so it is
2317 possible that DEF_REGULAR is not set now but will be set
2318 later (it is never cleared). We account for that
2319 possibility below by storing information in the
2320 dyn_relocs field of the hash table entry. A similar
2321 situation occurs when creating shared libraries and symbol
2322 visibility changes render the symbol local.
2324 If on the other hand, we are creating an executable, we
2325 may need to keep relocations for symbols satisfied by a
2326 dynamic library if we manage to avoid copy relocs for the
2329 && (sec->flags & SEC_ALLOC) != 0
2330 && (r_type != R_METAG_RELBRANCH
2332 && (! info->symbolic
2333 || hh->eh.root.type == bfd_link_hash_defweak
2334 || !hh->eh.def_regular))))
2336 && (sec->flags & SEC_ALLOC) != 0
2338 && (hh->eh.root.type == bfd_link_hash_defweak
2339 || !hh->eh.def_regular)))
2341 struct elf_metag_dyn_reloc_entry *hdh_p;
2342 struct elf_metag_dyn_reloc_entry **hdh_head;
2345 htab->etab.dynobj = dynobj = abfd;
2347 /* When creating a shared object, we must copy these
2348 relocs into the output file. We create a reloc
2349 section in dynobj and make room for the reloc. */
2352 sreloc = _bfd_elf_make_dynamic_reloc_section
2353 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
2357 bfd_set_error (bfd_error_bad_value);
2361 elf_section_data (sec)->sreloc = sreloc;
2364 /* If this is a global symbol, we count the number of
2365 relocations we need for this symbol. */
2367 hdh_head = &((struct elf_metag_link_hash_entry *) hh)->dyn_relocs;
2370 /* Track dynamic relocs needed for local syms too. */
2374 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
2378 vpp = &elf_section_data (sr)->local_dynrel;
2379 hdh_head = (struct elf_metag_dyn_reloc_entry **) vpp;
2383 if (hdh_p == NULL || hdh_p->sec != sec)
2385 hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2386 bfd_alloc (dynobj, sizeof *hdh_p));
2389 hdh_p->hdh_next = *hdh_head;
2393 hdh_p->relative_count = 0;
2397 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
2398 hdh_p->relative_count += 1;
2402 /* This relocation describes the C++ object vtable hierarchy.
2403 Reconstruct it for later use during GC. */
2404 case R_METAG_GNU_VTINHERIT:
2405 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh,
2410 /* This relocation describes which C++ vtable entries are actually
2411 used. Record for later use during GC. */
2412 case R_METAG_GNU_VTENTRY:
2413 BFD_ASSERT (hh != NULL);
2415 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rel->r_addend))
2424 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2427 elf_metag_copy_indirect_symbol (struct bfd_link_info *info,
2428 struct elf_link_hash_entry *eh_dir,
2429 struct elf_link_hash_entry *eh_ind)
2431 struct elf_metag_link_hash_entry *hh_dir, *hh_ind;
2433 hh_dir = metag_elf_hash_entry (eh_dir);
2434 hh_ind = metag_elf_hash_entry (eh_ind);
2436 if (hh_ind->dyn_relocs != NULL)
2438 if (hh_dir->dyn_relocs != NULL)
2440 struct elf_metag_dyn_reloc_entry **hdh_pp;
2441 struct elf_metag_dyn_reloc_entry *hdh_p;
2443 if (eh_ind->root.type == bfd_link_hash_indirect)
2446 /* Add reloc counts against the weak sym to the strong sym
2447 list. Merge any entries against the same section. */
2448 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2450 struct elf_metag_dyn_reloc_entry *hdh_q;
2452 for (hdh_q = hh_dir->dyn_relocs; hdh_q != NULL;
2453 hdh_q = hdh_q->hdh_next)
2454 if (hdh_q->sec == hdh_p->sec)
2456 hdh_q->relative_count += hdh_p->relative_count;
2457 hdh_q->count += hdh_p->count;
2458 *hdh_pp = hdh_p->hdh_next;
2462 hdh_pp = &hdh_p->hdh_next;
2464 *hdh_pp = hh_dir->dyn_relocs;
2467 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
2468 hh_ind->dyn_relocs = NULL;
2471 if (eh_ind->root.type == bfd_link_hash_indirect
2472 && eh_dir->got.refcount <= 0)
2474 hh_dir->tls_type = hh_ind->tls_type;
2475 hh_ind->tls_type = GOT_UNKNOWN;
2478 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
2481 /* Adjust a symbol defined by a dynamic object and referenced by a
2482 regular object. The current definition is in some section of the
2483 dynamic object, but we're not including those sections. We have to
2484 change the definition to something the rest of the link can
2488 elf_metag_adjust_dynamic_symbol (struct bfd_link_info *info,
2489 struct elf_link_hash_entry *eh)
2491 struct elf_metag_link_hash_table *htab;
2492 struct elf_metag_link_hash_entry *hh;
2493 struct elf_metag_dyn_reloc_entry *hdh_p;
2496 /* If this is a function, put it in the procedure linkage table. We
2497 will fill in the contents of the procedure linkage table later,
2498 when we know the address of the .got section. */
2499 if (eh->type == STT_FUNC
2502 if (eh->plt.refcount <= 0
2503 || SYMBOL_CALLS_LOCAL (info, eh)
2504 || (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2505 && eh->root.type == bfd_link_hash_undefweak))
2507 /* This case can occur if we saw a PLT reloc in an input
2508 file, but the symbol was never referred to by a dynamic
2509 object. In such a case, we don't actually need to build
2510 a procedure linkage table, and we can just do a PCREL
2512 eh->plt.offset = (bfd_vma) -1;
2519 eh->plt.offset = (bfd_vma) -1;
2521 /* If this is a weak symbol, and there is a real definition, the
2522 processor independent code will have arranged for us to see the
2523 real definition first, and we can just use the same value. */
2524 if (eh->u.weakdef != NULL)
2526 if (eh->u.weakdef->root.type != bfd_link_hash_defined
2527 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
2529 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
2530 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
2531 eh->non_got_ref = eh->u.weakdef->non_got_ref;
2535 /* This is a reference to a symbol defined by a dynamic object which
2536 is not a function. */
2538 /* If we are creating a shared library, we must presume that the
2539 only references to the symbol are via the global offset table.
2540 For such cases we need not do anything here; the relocations will
2541 be handled correctly by relocate_section. */
2545 /* If there are no references to this symbol that do not use the
2546 GOT, we don't need to generate a copy reloc. */
2547 if (!eh->non_got_ref)
2550 /* If -z nocopyreloc was given, we won't generate them either. */
2551 if (info->nocopyreloc)
2553 eh->non_got_ref = 0;
2557 hh = (struct elf_metag_link_hash_entry *) eh;
2558 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2560 s = hdh_p->sec->output_section;
2561 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2565 /* If we didn't find any dynamic relocs in read-only sections, then
2566 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2569 eh->non_got_ref = 0;
2573 /* We must allocate the symbol in our .dynbss section, which will
2574 become part of the .bss section of the executable. There will be
2575 an entry for this symbol in the .dynsym section. The dynamic
2576 object will contain position independent code, so all references
2577 from the dynamic object to this symbol will go through the global
2578 offset table. The dynamic linker will use the .dynsym entry to
2579 determine the address it must put in the global offset table, so
2580 both the dynamic object and the regular object will refer to the
2581 same memory location for the variable. */
2583 htab = metag_link_hash_table (info);
2585 /* We must generate a COPY reloc to tell the dynamic linker to
2586 copy the initial value out of the dynamic object and into the
2587 runtime process image. */
2588 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
2590 htab->srelbss->size += sizeof (Elf32_External_Rela);
2596 return _bfd_elf_adjust_dynamic_copy (eh, s);
2599 /* Allocate space in .plt, .got and associated reloc sections for
2603 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2605 struct bfd_link_info *info;
2606 struct elf_metag_link_hash_table *htab;
2607 struct elf_metag_link_hash_entry *hh;
2608 struct elf_metag_dyn_reloc_entry *hdh_p;
2610 if (eh->root.type == bfd_link_hash_indirect)
2613 if (eh->root.type == bfd_link_hash_warning)
2614 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2617 htab = metag_link_hash_table (info);
2619 if (htab->etab.dynamic_sections_created
2620 && eh->plt.refcount > 0)
2622 /* Make sure this symbol is output as a dynamic symbol.
2623 Undefined weak syms won't yet be marked as dynamic. */
2624 if (eh->dynindx == -1
2625 && !eh->forced_local)
2627 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2631 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, eh))
2633 asection *s = htab->splt;
2635 /* If this is the first .plt entry, make room for the special
2638 s->size += PLT_ENTRY_SIZE;
2640 eh->plt.offset = s->size;
2642 /* If this symbol is not defined in a regular file, and we are
2643 not generating a shared library, then set the symbol to this
2644 location in the .plt. This is required to make function
2645 pointers compare as equal between the normal executable and
2646 the shared library. */
2648 && !eh->def_regular)
2650 eh->root.u.def.section = s;
2651 eh->root.u.def.value = eh->plt.offset;
2654 /* Make room for this entry. */
2655 s->size += PLT_ENTRY_SIZE;
2657 /* We also need to make an entry in the .got.plt section, which
2658 will be placed in the .got section by the linker script. */
2659 htab->sgotplt->size += 4;
2661 /* We also need to make an entry in the .rel.plt section. */
2662 htab->srelplt->size += sizeof (Elf32_External_Rela);
2666 eh->plt.offset = (bfd_vma) -1;
2672 eh->plt.offset = (bfd_vma) -1;
2676 if (eh->got.refcount > 0)
2680 int tls_type = metag_elf_hash_entry (eh)->tls_type;
2682 /* Make sure this symbol is output as a dynamic symbol.
2683 Undefined weak syms won't yet be marked as dynamic. */
2684 if (eh->dynindx == -1
2685 && !eh->forced_local)
2687 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2693 eh->got.offset = s->size;
2695 /* R_METAG_TLS_GD needs 2 consecutive GOT slots. */
2696 if (tls_type == GOT_TLS_GD)
2698 dyn = htab->etab.dynamic_sections_created;
2699 /* R_METAG_TLS_IE needs one dynamic relocation if dynamic,
2700 R_METAG_TLS_GD needs one if local symbol and two if global. */
2701 if ((tls_type == GOT_TLS_GD && eh->dynindx == -1)
2702 || (tls_type == GOT_TLS_IE && dyn))
2703 htab->srelgot->size += sizeof (Elf32_External_Rela);
2704 else if (tls_type == GOT_TLS_GD)
2705 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2706 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, eh))
2707 htab->srelgot->size += sizeof (Elf32_External_Rela);
2710 eh->got.offset = (bfd_vma) -1;
2712 hh = (struct elf_metag_link_hash_entry *) eh;
2713 if (hh->dyn_relocs == NULL)
2716 /* If this is a -Bsymbolic shared link, then we need to discard all
2717 space allocated for dynamic pc-relative relocs against symbols
2718 defined in a regular object. For the normal shared case, discard
2719 space for relocs that have become local due to symbol visibility
2723 if (SYMBOL_CALLS_LOCAL (info, eh))
2725 struct elf_metag_dyn_reloc_entry **hdh_pp;
2727 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2729 hdh_p->count -= hdh_p->relative_count;
2730 hdh_p->relative_count = 0;
2731 if (hdh_p->count == 0)
2732 *hdh_pp = hdh_p->hdh_next;
2734 hdh_pp = &hdh_p->hdh_next;
2738 /* Also discard relocs on undefined weak syms with non-default
2740 if (hh->dyn_relocs != NULL
2741 && eh->root.type == bfd_link_hash_undefweak)
2743 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2744 hh->dyn_relocs = NULL;
2746 /* Make sure undefined weak symbols are output as a dynamic
2748 else if (eh->dynindx == -1
2749 && !eh->forced_local)
2751 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2758 /* For the non-shared case, discard space for relocs against
2759 symbols which turn out to need copy relocs or are not
2761 if (!eh->non_got_ref
2762 && ((eh->def_dynamic
2763 && !eh->def_regular)
2764 || (htab->etab.dynamic_sections_created
2765 && (eh->root.type == bfd_link_hash_undefweak
2766 || eh->root.type == bfd_link_hash_undefined))))
2768 /* Make sure this symbol is output as a dynamic symbol.
2769 Undefined weak syms won't yet be marked as dynamic. */
2770 if (eh->dynindx == -1
2771 && !eh->forced_local)
2773 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2777 /* If that succeeded, we know we'll be keeping all the
2779 if (eh->dynindx != -1)
2783 hh->dyn_relocs = NULL;
2789 /* Finally, allocate space. */
2790 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2792 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2793 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2799 /* Find any dynamic relocs that apply to read-only sections. */
2802 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2804 struct elf_metag_link_hash_entry *hh;
2805 struct elf_metag_dyn_reloc_entry *hdh_p;
2807 if (eh->root.type == bfd_link_hash_warning)
2808 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2810 hh = (struct elf_metag_link_hash_entry *) eh;
2811 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2813 asection *s = hdh_p->sec->output_section;
2815 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2817 struct bfd_link_info *info = inf;
2819 info->flags |= DF_TEXTREL;
2821 /* Not an error, just cut short the traversal. */
2828 /* Set the sizes of the dynamic sections. */
2831 elf_metag_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2832 struct bfd_link_info *info)
2834 struct elf_metag_link_hash_table *htab;
2840 htab = metag_link_hash_table (info);
2841 dynobj = htab->etab.dynobj;
2845 if (htab->etab.dynamic_sections_created)
2847 /* Set the contents of the .interp section to the interpreter. */
2848 if (info->executable)
2850 s = bfd_get_linker_section (dynobj, ".interp");
2853 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2854 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2858 /* Set up .got offsets for local syms, and space for local dynamic
2860 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2862 bfd_signed_vma *local_got;
2863 bfd_signed_vma *end_local_got;
2864 bfd_size_type locsymcount;
2865 Elf_Internal_Shdr *symtab_hdr;
2867 char *local_tls_type;
2869 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2872 for (s = ibfd->sections; s != NULL; s = s->next)
2874 struct elf_metag_dyn_reloc_entry *hdh_p;
2876 for (hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2877 elf_section_data (s)->local_dynrel);
2879 hdh_p = hdh_p->hdh_next)
2881 if (!bfd_is_abs_section (hdh_p->sec)
2882 && bfd_is_abs_section (hdh_p->sec->output_section))
2884 /* Input section has been discarded, either because
2885 it is a copy of a linkonce section or due to
2886 linker script /DISCARD/, so we'll be discarding
2889 else if (hdh_p->count != 0)
2891 srel = elf_section_data (hdh_p->sec)->sreloc;
2892 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2893 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2894 info->flags |= DF_TEXTREL;
2899 local_got = elf_local_got_refcounts (ibfd);
2903 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2904 locsymcount = symtab_hdr->sh_info;
2905 end_local_got = local_got + locsymcount;
2906 local_tls_type = metag_elf_local_got_tls_type (ibfd);
2908 srel = htab->srelgot;
2909 for (; local_got < end_local_got; ++local_got)
2913 *local_got = s->size;
2914 s->size += GOT_ENTRY_SIZE;
2915 /* R_METAG_TLS_GD relocs need 2 consecutive GOT entries. */
2916 if (*local_tls_type == GOT_TLS_GD)
2919 srel->size += sizeof (Elf32_External_Rela);
2922 *local_got = (bfd_vma) -1;
2927 if (htab->tls_ldm_got.refcount > 0)
2929 /* Allocate 2 got entries and 1 dynamic reloc for R_METAG_TLS_LDM
2931 htab->tls_ldm_got.offset = htab->sgot->size;
2932 htab->sgot->size += 8;
2933 htab->srelgot->size += sizeof (Elf32_External_Rela);
2936 htab->tls_ldm_got.offset = -1;
2938 /* Allocate global sym .plt and .got entries, and space for global
2939 sym dynamic relocs. */
2940 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2942 /* We now have determined the sizes of the various dynamic sections.
2943 Allocate memory for them. */
2945 for (s = dynobj->sections; s != NULL; s = s->next)
2947 bfd_boolean reloc_section = FALSE;
2949 if ((s->flags & SEC_LINKER_CREATED) == 0)
2954 || s == htab->sgotplt
2955 || s == htab->sdynbss)
2957 /* Strip this section if we don't need it; see the
2960 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2962 if (s->size != 0 && s != htab->srelplt)
2965 /* We use the reloc_count field as a counter if we need
2966 to copy relocs into the output file. */
2968 reloc_section = TRUE;
2972 /* It's not one of our sections, so don't allocate space. */
2978 /* If we don't need this section, strip it from the
2979 output file. This is mostly to handle .rela.bss and
2980 .rela.plt. We must create both sections in
2981 create_dynamic_sections, because they must be created
2982 before the linker maps input sections to output
2983 sections. The linker does that before
2984 adjust_dynamic_symbol is called, and it is that
2985 function which decides whether anything needs to go
2986 into these sections. */
2987 s->flags |= SEC_EXCLUDE;
2991 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2994 /* Allocate memory for the section contents. */
2995 s->contents = bfd_zalloc (dynobj, s->size);
2996 if (s->contents == NULL)
2998 else if (reloc_section)
3000 unsigned char *contents = s->contents;
3001 Elf32_External_Rela reloc;
3003 /* Fill the reloc section with a R_METAG_NONE type reloc. */
3004 memset(&reloc, 0, sizeof(Elf32_External_Rela));
3005 reloc.r_info[0] = R_METAG_NONE;
3006 for (; contents < (s->contents + s->size);
3007 contents += sizeof(Elf32_External_Rela))
3009 memcpy(contents, &reloc, sizeof(Elf32_External_Rela));
3014 if (htab->etab.dynamic_sections_created)
3016 /* Add some entries to the .dynamic section. We fill in the
3017 values later, in elf_metag_finish_dynamic_sections, but we
3018 must add the entries now so that we get the correct size for
3019 the .dynamic section. The DT_DEBUG entry is filled in by the
3020 dynamic linker and used by the debugger. */
3021 #define add_dynamic_entry(TAG, VAL) \
3022 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3024 if (!add_dynamic_entry (DT_PLTGOT, 0))
3027 if (info->executable)
3029 if (!add_dynamic_entry (DT_DEBUG, 0))
3033 if (htab->srelplt->size != 0)
3035 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3036 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3037 || !add_dynamic_entry (DT_JMPREL, 0))
3043 if (!add_dynamic_entry (DT_RELA, 0)
3044 || !add_dynamic_entry (DT_RELASZ, 0)
3045 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3048 /* If any dynamic relocs apply to a read-only section,
3049 then we need a DT_TEXTREL entry. */
3050 if ((info->flags & DF_TEXTREL) == 0)
3051 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
3053 if ((info->flags & DF_TEXTREL) != 0)
3055 if (!add_dynamic_entry (DT_TEXTREL, 0))
3060 #undef add_dynamic_entry
3065 /* Finish up dynamic symbol handling. We set the contents of various
3066 dynamic sections here. */
3069 elf_metag_finish_dynamic_symbol (bfd *output_bfd,
3070 struct bfd_link_info *info,
3071 struct elf_link_hash_entry *eh,
3072 Elf_Internal_Sym *sym)
3074 struct elf_metag_link_hash_table *htab;
3075 Elf_Internal_Rela rel;
3078 htab = metag_link_hash_table (info);
3080 if (eh->plt.offset != (bfd_vma) -1)
3090 if (eh->plt.offset & 1)
3093 BFD_ASSERT (eh->dynindx != -1);
3096 sgot = htab->sgotplt;
3097 srela = htab->srelplt;
3098 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3100 /* Get the index in the procedure linkage table which
3101 corresponds to this symbol. This is the index of this symbol
3102 in all the symbols for which we are making plt entries. The
3103 first entry in the procedure linkage table is reserved. */
3104 plt_index = eh->plt.offset / PLT_ENTRY_SIZE - 1;
3106 /* Get the offset into the .got.plt table of the entry that
3107 corresponds to this function. */
3108 got_offset = plt_index * GOT_ENTRY_SIZE;
3110 BFD_ASSERT (got_offset < (1 << 16));
3112 got_entry = sgot->output_section->vma
3113 + sgot->output_offset
3116 BFD_ASSERT (plt_index < (1 << 16));
3118 /* Fill in the entry in the procedure linkage table. */
3121 bfd_put_32 (output_bfd,
3123 | (((got_entry >> 16) & 0xffff) << 3)),
3124 splt->contents + eh->plt.offset);
3125 bfd_put_32 (output_bfd,
3127 | ((got_entry & 0xffff) << 3)),
3128 splt->contents + eh->plt.offset + 4);
3129 bfd_put_32 (output_bfd, plt_entry[2],
3130 splt->contents + eh->plt.offset + 8);
3131 bfd_put_32 (output_bfd,
3132 (plt_entry[3] | (plt_index << 3)),
3133 splt->contents + eh->plt.offset + 12);
3134 bfd_put_32 (output_bfd,
3136 | ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3137 splt->contents + eh->plt.offset + 16);
3141 bfd_vma addr = got_entry - (splt->output_section->vma +
3142 splt->output_offset + eh->plt.offset);
3144 bfd_put_32 (output_bfd,
3145 plt_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3146 splt->contents + eh->plt.offset);
3147 bfd_put_32 (output_bfd,
3148 plt_pic_entry[1] | ((addr & 0xffff) << 3),
3149 splt->contents + eh->plt.offset + 4);
3150 bfd_put_32 (output_bfd, plt_pic_entry[2],
3151 splt->contents + eh->plt.offset + 8);
3152 bfd_put_32 (output_bfd,
3153 (plt_pic_entry[3] | (plt_index << 3)),
3154 splt->contents + eh->plt.offset + 12);
3155 bfd_put_32 (output_bfd,
3157 + ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3158 splt->contents + eh->plt.offset + 16);
3161 /* Fill in the entry in the global offset table. */
3162 bfd_put_32 (output_bfd,
3163 (splt->output_section->vma
3164 + splt->output_offset
3166 + 12), /* offset within PLT entry */
3167 sgot->contents + got_offset);
3169 /* Fill in the entry in the .rela.plt section. */
3170 rel.r_offset = (sgot->output_section->vma
3171 + sgot->output_offset
3173 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_JMP_SLOT);
3175 loc = htab->srelplt->contents;
3176 loc += plt_index * sizeof(Elf32_External_Rela);
3177 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3179 if (!eh->def_regular)
3181 /* Mark the symbol as undefined, rather than as defined in
3182 the .plt section. Leave the value alone. */
3183 sym->st_shndx = SHN_UNDEF;
3187 if (eh->got.offset != (bfd_vma) -1
3188 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
3189 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
3191 /* This symbol has an entry in the global offset table. Set it
3194 rel.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
3195 + htab->sgot->output_offset
3196 + htab->sgot->output_section->vma);
3198 /* If this is a -Bsymbolic link and the symbol is defined
3199 locally or was forced to be local because of a version file,
3200 we just want to emit a RELATIVE reloc. The entry in the
3201 global offset table will already have been initialized in the
3202 relocate_section function. */
3204 && (info->symbolic || eh->dynindx == -1)
3207 rel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
3208 rel.r_addend = (eh->root.u.def.value
3209 + eh->root.u.def.section->output_offset
3210 + eh->root.u.def.section->output_section->vma);
3214 if ((eh->got.offset & 1) != 0)
3216 bfd_put_32 (output_bfd, 0, htab->sgot->contents + eh->got.offset);
3217 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_GLOB_DAT);
3221 loc = htab->srelgot->contents;
3222 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3223 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3230 /* This symbol needs a copy reloc. Set it up. */
3232 if (! (eh->dynindx != -1
3233 && (eh->root.type == bfd_link_hash_defined
3234 || eh->root.type == bfd_link_hash_defweak)))
3239 rel.r_offset = (eh->root.u.def.value
3240 + eh->root.u.def.section->output_offset
3241 + eh->root.u.def.section->output_section->vma);
3243 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_COPY);
3244 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3245 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3248 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3249 if (eh->root.root.string[0] == '_'
3250 && (strcmp (eh->root.root.string, "_DYNAMIC") == 0
3251 || eh == htab->etab.hgot))
3253 sym->st_shndx = SHN_ABS;
3259 /* Set the Meta ELF ABI version. */
3262 elf_metag_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
3264 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
3266 i_ehdrp = elf_elfheader (abfd);
3267 i_ehdrp->e_ident[EI_ABIVERSION] = METAG_ELF_ABI_VERSION;
3270 /* Used to decide how to sort relocs in an optimal manner for the
3271 dynamic linker, before writing them out. */
3273 static enum elf_reloc_type_class
3274 elf_metag_reloc_type_class (const Elf_Internal_Rela *rela)
3276 switch ((int) ELF32_R_TYPE (rela->r_info))
3278 case R_METAG_RELATIVE:
3279 return reloc_class_relative;
3280 case R_METAG_JMP_SLOT:
3281 return reloc_class_plt;
3283 return reloc_class_copy;
3285 return reloc_class_normal;
3289 /* Finish up the dynamic sections. */
3292 elf_metag_finish_dynamic_sections (bfd *output_bfd,
3293 struct bfd_link_info *info)
3296 struct elf_metag_link_hash_table *htab;
3299 htab = metag_link_hash_table (info);
3300 dynobj = htab->etab.dynobj;
3302 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3304 if (htab->etab.dynamic_sections_created)
3307 Elf32_External_Dyn *dyncon, *dynconend;
3312 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3313 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3314 for (; dyncon < dynconend; dyncon++)
3316 Elf_Internal_Dyn dyn;
3319 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3327 s = htab->sgot->output_section;
3328 BFD_ASSERT (s != NULL);
3329 dyn.d_un.d_ptr = s->vma + htab->sgot->output_offset;
3330 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3334 s = htab->srelplt->output_section;
3335 BFD_ASSERT (s != NULL);
3336 dyn.d_un.d_ptr = s->vma;
3337 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3342 dyn.d_un.d_val = s->size;
3343 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3347 /* Don't count procedure linkage table relocs in the
3348 overall reloc count. */
3349 if (htab->srelplt) {
3351 dyn.d_un.d_val -= s->size;
3353 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3357 /* We may not be using the standard ELF linker script.
3358 If .rela.plt is the first .rela section, we adjust
3359 DT_RELA to not include it. */
3360 if (htab->srelplt) {
3362 if (dyn.d_un.d_ptr == s->output_section->vma + s->output_offset)
3363 dyn.d_un.d_ptr += s->size;
3365 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3371 /* Fill in the first entry in the procedure linkage table. */
3373 if (splt && splt->size > 0)
3376 /* addr = .got + 4 */
3377 addr = htab->sgot->output_section->vma +
3378 htab->sgot->output_offset + 4;
3381 addr -= splt->output_section->vma + splt->output_offset;
3382 bfd_put_32 (output_bfd,
3383 plt0_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3385 bfd_put_32 (output_bfd,
3386 plt0_pic_entry[1] | ((addr & 0xffff) << 3),
3387 splt->contents + 4);
3388 bfd_put_32 (output_bfd, plt0_pic_entry[2], splt->contents + 8);
3389 bfd_put_32 (output_bfd, plt0_pic_entry[3], splt->contents + 12);
3390 bfd_put_32 (output_bfd, plt0_pic_entry[4], splt->contents + 16);
3394 bfd_put_32 (output_bfd,
3395 plt0_entry[0] | (((addr >> 16) & 0xffff) << 3),
3397 bfd_put_32 (output_bfd,
3398 plt0_entry[1] | ((addr & 0xffff) << 3),
3399 splt->contents + 4);
3400 bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8);
3401 bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12);
3402 bfd_put_32 (output_bfd, plt0_entry[4], splt->contents + 16);
3405 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3410 if (htab->sgot != NULL && htab->sgot->size != 0)
3412 /* Fill in the first entry in the global offset table.
3413 We use it to point to our dynamic section, if we have one. */
3414 bfd_put_32 (output_bfd,
3415 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
3416 htab->sgot->contents);
3418 /* The second entry is reserved for use by the dynamic linker. */
3419 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
3421 /* Set .got entry size. */
3422 elf_section_data (htab->sgot->output_section)
3423 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
3429 /* Return the section that should be marked against GC for a given
3433 elf_metag_gc_mark_hook (asection *sec,
3434 struct bfd_link_info *info,
3435 Elf_Internal_Rela *rela,
3436 struct elf_link_hash_entry *hh,
3437 Elf_Internal_Sym *sym)
3440 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
3442 case R_METAG_GNU_VTINHERIT:
3443 case R_METAG_GNU_VTENTRY:
3447 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
3450 /* Update the got and plt entry reference counts for the section being
3454 elf_metag_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3455 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3456 asection *sec ATTRIBUTE_UNUSED,
3457 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3459 Elf_Internal_Shdr *symtab_hdr;
3460 struct elf_link_hash_entry **eh_syms;
3461 bfd_signed_vma *local_got_refcounts;
3462 bfd_signed_vma *local_plt_refcounts;
3463 const Elf_Internal_Rela *rel, *relend;
3465 if (info->relocatable)
3468 elf_section_data (sec)->local_dynrel = NULL;
3470 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3471 eh_syms = elf_sym_hashes (abfd);
3472 local_got_refcounts = elf_local_got_refcounts (abfd);
3473 local_plt_refcounts = local_got_refcounts;
3474 if (local_plt_refcounts != NULL)
3475 local_plt_refcounts += symtab_hdr->sh_info;
3477 relend = relocs + sec->reloc_count;
3478 for (rel = relocs; rel < relend; rel++)
3480 unsigned long r_symndx;
3481 unsigned int r_type;
3482 struct elf_link_hash_entry *eh = NULL;
3484 r_symndx = ELF32_R_SYM (rel->r_info);
3485 if (r_symndx >= symtab_hdr->sh_info)
3487 struct elf_metag_link_hash_entry *hh;
3488 struct elf_metag_dyn_reloc_entry **hdh_pp;
3489 struct elf_metag_dyn_reloc_entry *hdh_p;
3491 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
3492 while (eh->root.type == bfd_link_hash_indirect
3493 || eh->root.type == bfd_link_hash_warning)
3494 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
3495 hh = (struct elf_metag_link_hash_entry *) eh;
3497 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3498 hdh_pp = &hdh_p->hdh_next)
3499 if (hdh_p->sec == sec)
3501 /* Everything must go for SEC. */
3502 *hdh_pp = hdh_p->hdh_next;
3507 r_type = ELF32_R_TYPE (rel->r_info);
3510 case R_METAG_TLS_LDM:
3511 if (metag_link_hash_table (info)->tls_ldm_got.refcount > 0)
3512 metag_link_hash_table (info)->tls_ldm_got.refcount -= 1;
3514 case R_METAG_TLS_IE:
3515 case R_METAG_TLS_GD:
3516 case R_METAG_GETSET_GOT:
3519 if (eh->got.refcount > 0)
3520 eh->got.refcount -= 1;
3522 else if (local_got_refcounts != NULL)
3524 if (local_got_refcounts[r_symndx] > 0)
3525 local_got_refcounts[r_symndx] -= 1;
3529 case R_METAG_RELBRANCH_PLT:
3532 if (eh->plt.refcount > 0)
3533 eh->plt.refcount -= 1;
3537 case R_METAG_ADDR32:
3538 case R_METAG_HIADDR16:
3539 case R_METAG_LOADDR16:
3540 case R_METAG_GETSETOFF:
3541 case R_METAG_RELBRANCH:
3544 struct elf_metag_link_hash_entry *hh;
3545 struct elf_metag_dyn_reloc_entry **hdh_pp;
3546 struct elf_metag_dyn_reloc_entry *hdh_p;
3548 if (!info->shared && eh->plt.refcount > 0)
3549 eh->plt.refcount -= 1;
3551 hh = (struct elf_metag_link_hash_entry *) eh;
3553 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3554 hdh_pp = &hdh_p->hdh_next)
3555 if (hdh_p->sec == sec)
3557 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
3558 hdh_p->relative_count -= 1;
3560 if (hdh_p->count == 0)
3561 *hdh_pp = hdh_p->hdh_next;
3575 /* Determine the type of stub needed, if any, for a call. */
3577 static enum elf_metag_stub_type
3578 metag_type_of_stub (asection *input_sec,
3579 const Elf_Internal_Rela *rel,
3580 struct elf_metag_link_hash_entry *hh,
3581 bfd_vma destination,
3582 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3585 bfd_vma branch_offset;
3586 bfd_vma max_branch_offset;
3589 !(hh->eh.root.type == bfd_link_hash_defined
3590 || hh->eh.root.type == bfd_link_hash_defweak))
3591 return metag_stub_none;
3593 /* Determine where the call point is. */
3594 location = (input_sec->output_offset
3595 + input_sec->output_section->vma
3598 branch_offset = destination - location;
3600 /* Determine if a long branch stub is needed. Meta branch offsets
3601 are signed 19 bits 4 byte aligned. */
3602 max_branch_offset = (1 << (BRANCH_BITS-1)) << 2;
3604 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
3607 return metag_stub_long_branch_shared;
3609 return metag_stub_long_branch;
3612 return metag_stub_none;
3615 #define MOVT_A0_3 0x82180005
3616 #define JUMP_A0_3 0xac180003
3618 #define MOVT_A1LBP 0x83080005
3619 #define ADD_A1LBP 0x83080000
3621 #define ADDT_A0_3_CPC 0x82980001
3622 #define ADD_A0_3_A0_3 0x82180000
3623 #define MOV_PC_A0_3 0xa3180ca0
3626 metag_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3628 struct elf_metag_stub_hash_entry *hsh;
3635 /* Massage our args to the form they really have. */
3636 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3638 stub_sec = hsh->stub_sec;
3640 /* Make a note of the offset within the stubs for this entry. */
3641 hsh->stub_offset = stub_sec->size;
3642 loc = stub_sec->contents + hsh->stub_offset;
3644 stub_bfd = stub_sec->owner;
3646 switch (hsh->stub_type)
3648 case metag_stub_long_branch_shared:
3649 /* A PIC long branch stub is an ADDT and an ADD instruction used to
3650 calculate the jump target using A0.3 as a temporary. Then a MOV
3651 to PC carries out the jump. */
3652 sym_value = (hsh->target_value
3653 + hsh->target_section->output_offset
3654 + hsh->target_section->output_section->vma
3657 sym_value -= (hsh->stub_offset
3658 + stub_sec->output_offset
3659 + stub_sec->output_section->vma);
3661 bfd_put_32 (stub_bfd, ADDT_A0_3_CPC | (((sym_value >> 16) & 0xffff) << 3),
3664 bfd_put_32 (stub_bfd, ADD_A0_3_A0_3 | ((sym_value & 0xffff) << 3),
3667 bfd_put_32 (stub_bfd, MOV_PC_A0_3, loc + 8);
3671 case metag_stub_long_branch:
3672 /* A standard long branch stub is a MOVT instruction followed by a
3673 JUMP instruction using the A0.3 register as a temporary. This is
3674 the same method used by the LDLK linker (patch.c). */
3675 sym_value = (hsh->target_value
3676 + hsh->target_section->output_offset
3677 + hsh->target_section->output_section->vma
3680 bfd_put_32 (stub_bfd, MOVT_A0_3 | (((sym_value >> 16) & 0xffff) << 3),
3683 bfd_put_32 (stub_bfd, JUMP_A0_3 | ((sym_value & 0xffff) << 3), loc + 4);
3692 stub_sec->size += size;
3696 /* As above, but don't actually build the stub. Just bump offset so
3697 we know stub section sizes. */
3700 metag_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3702 struct elf_metag_stub_hash_entry *hsh;
3705 /* Massage our args to the form they really have. */
3706 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3708 if (hsh->stub_type == metag_stub_long_branch)
3710 else if (hsh->stub_type == metag_stub_long_branch_shared)
3713 hsh->stub_sec->size += size;
3717 /* Set up various things so that we can make a list of input sections
3718 for each output section included in the link. Returns -1 on error,
3719 0 when no stubs will be needed, and 1 on success. */
3722 elf_metag_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
3725 unsigned int bfd_count;
3726 int top_id, top_index;
3728 asection **input_list, **list;
3730 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3732 /* Count the number of input BFDs and find the top input section id. */
3733 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3735 input_bfd = input_bfd->link_next)
3738 for (section = input_bfd->sections;
3740 section = section->next)
3742 if (top_id < section->id)
3743 top_id = section->id;
3747 htab->bfd_count = bfd_count;
3749 amt = sizeof (struct map_stub) * (top_id + 1);
3750 htab->stub_group = bfd_zmalloc (amt);
3751 if (htab->stub_group == NULL)
3754 /* We can't use output_bfd->section_count here to find the top output
3755 section index as some sections may have been removed, and
3756 strip_excluded_output_sections doesn't renumber the indices. */
3757 for (section = output_bfd->sections, top_index = 0;
3759 section = section->next)
3761 if (top_index < section->index)
3762 top_index = section->index;
3765 htab->top_index = top_index;
3766 amt = sizeof (asection *) * (top_index + 1);
3767 input_list = bfd_malloc (amt);
3768 htab->input_list = input_list;
3769 if (input_list == NULL)
3772 /* For sections we aren't interested in, mark their entries with a
3773 value we can check later. */
3774 list = input_list + top_index;
3776 *list = bfd_abs_section_ptr;
3777 while (list-- != input_list);
3779 for (section = output_bfd->sections;
3781 section = section->next)
3783 /* FIXME: This is a bit of hack. Currently our .ctors and .dtors
3784 * have PC relative relocs in them but no code flag set. */
3785 if (((section->flags & SEC_CODE) != 0) ||
3786 strcmp(".ctors", section->name) ||
3787 strcmp(".dtors", section->name))
3788 input_list[section->index] = NULL;
3794 /* The linker repeatedly calls this function for each input section,
3795 in the order that input sections are linked into output sections.
3796 Build lists of input sections to determine groupings between which
3797 we may insert linker stubs. */
3800 elf_metag_next_input_section (struct bfd_link_info *info, asection *isec)
3802 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3804 if (isec->output_section->index <= htab->top_index)
3806 asection **list = htab->input_list + isec->output_section->index;
3807 if (*list != bfd_abs_section_ptr)
3809 /* Steal the link_sec pointer for our list. */
3810 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3811 /* This happens to make the list in reverse order,
3812 which is what we want. */
3813 PREV_SEC (isec) = *list;
3819 /* See whether we can group stub sections together. Grouping stub
3820 sections may result in fewer stubs. More importantly, we need to
3821 put all .init* and .fini* stubs at the beginning of the .init or
3822 .fini output sections respectively, because glibc splits the
3823 _init and _fini functions into multiple parts. Putting a stub in
3824 the middle of a function is not a good idea. */
3827 group_sections (struct elf_metag_link_hash_table *htab,
3828 bfd_size_type stub_group_size,
3829 bfd_boolean stubs_always_before_branch)
3831 asection **list = htab->input_list + htab->top_index;
3834 asection *tail = *list;
3835 if (tail == bfd_abs_section_ptr)
3837 while (tail != NULL)
3841 bfd_size_type total;
3842 bfd_boolean big_sec;
3846 big_sec = total >= stub_group_size;
3848 while ((prev = PREV_SEC (curr)) != NULL
3849 && ((total += curr->output_offset - prev->output_offset)
3853 /* OK, the size from the start of CURR to the end is less
3854 than stub_group_size bytes and thus can be handled by one stub
3855 section. (or the tail section is itself larger than
3856 stub_group_size bytes, in which case we may be toast.)
3857 We should really be keeping track of the total size of
3858 stubs added here, as stubs contribute to the final output
3862 prev = PREV_SEC (tail);
3863 /* Set up this stub group. */
3864 htab->stub_group[tail->id].link_sec = curr;
3866 while (tail != curr && (tail = prev) != NULL);
3868 /* But wait, there's more! Input sections up to stub_group_size
3869 bytes before the stub section can be handled by it too.
3870 Don't do this if we have a really large section after the
3871 stubs, as adding more stubs increases the chance that
3872 branches may not reach into the stub section. */
3873 if (!stubs_always_before_branch && !big_sec)
3877 && ((total += tail->output_offset - prev->output_offset)
3881 prev = PREV_SEC (tail);
3882 htab->stub_group[tail->id].link_sec = curr;
3888 while (list-- != htab->input_list);
3889 free (htab->input_list);
3893 /* Read in all local syms for all input bfds.
3894 Returns -1 on error, 0 otherwise. */
3897 get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd,
3898 struct bfd_link_info *info)
3900 unsigned int bfd_indx;
3901 Elf_Internal_Sym *local_syms, **all_local_syms;
3902 int stub_changed = 0;
3903 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3905 /* We want to read in symbol extension records only once. To do this
3906 we need to read in the local symbols in parallel and save them for
3907 later use; so hold pointers to the local symbols in an array. */
3908 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
3909 all_local_syms = bfd_zmalloc (amt);
3910 htab->all_local_syms = all_local_syms;
3911 if (all_local_syms == NULL)
3914 /* Walk over all the input BFDs, swapping in local symbols. */
3917 input_bfd = input_bfd->link_next, bfd_indx++)
3919 Elf_Internal_Shdr *symtab_hdr;
3921 /* We'll need the symbol table in a second. */
3922 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3923 if (symtab_hdr->sh_info == 0)
3926 /* We need an array of the local symbols attached to the input bfd. */
3927 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3928 if (local_syms == NULL)
3930 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3931 symtab_hdr->sh_info, 0,
3933 /* Cache them for elf_link_input_bfd. */
3934 symtab_hdr->contents = (unsigned char *) local_syms;
3936 if (local_syms == NULL)
3939 all_local_syms[bfd_indx] = local_syms;
3942 return stub_changed;
3945 /* Determine and set the size of the stub section for a final link.
3947 The basic idea here is to examine all the relocations looking for
3948 PC-relative calls to a target that is unreachable with a "CALLR"
3951 /* See elf32-hppa.c and elf64-ppc.c. */
3954 elf_metag_size_stubs(bfd *output_bfd, bfd *stub_bfd,
3955 struct bfd_link_info *info,
3956 bfd_signed_vma group_size,
3957 asection * (*add_stub_section) (const char *, asection *),
3958 void (*layout_sections_again) (void))
3960 bfd_size_type stub_group_size;
3961 bfd_boolean stubs_always_before_branch;
3962 bfd_boolean stub_changed;
3963 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3965 /* Stash our params away. */
3966 htab->stub_bfd = stub_bfd;
3967 htab->add_stub_section = add_stub_section;
3968 htab->layout_sections_again = layout_sections_again;
3969 stubs_always_before_branch = group_size < 0;
3971 stub_group_size = -group_size;
3973 stub_group_size = group_size;
3974 if (stub_group_size == 1)
3976 /* Default values. */
3977 /* FIXME: not sure what these values should be */
3978 if (stubs_always_before_branch)
3980 stub_group_size = (1 << BRANCH_BITS);
3984 stub_group_size = (1 << BRANCH_BITS);
3988 group_sections (htab, stub_group_size, stubs_always_before_branch);
3990 switch (get_local_syms (output_bfd, info->input_bfds, info))
3993 if (htab->all_local_syms)
3994 goto error_ret_free_local;
3998 stub_changed = FALSE;
4002 stub_changed = TRUE;
4009 unsigned int bfd_indx;
4012 for (input_bfd = info->input_bfds, bfd_indx = 0;
4014 input_bfd = input_bfd->link_next, bfd_indx++)
4016 Elf_Internal_Shdr *symtab_hdr;
4018 Elf_Internal_Sym *local_syms;
4020 /* We'll need the symbol table in a second. */
4021 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4022 if (symtab_hdr->sh_info == 0)
4025 local_syms = htab->all_local_syms[bfd_indx];
4027 /* Walk over each section attached to the input bfd. */
4028 for (section = input_bfd->sections;
4030 section = section->next)
4032 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4034 /* If there aren't any relocs, then there's nothing more
4036 if ((section->flags & SEC_RELOC) == 0
4037 || section->reloc_count == 0)
4040 /* If this section is a link-once section that will be
4041 discarded, then don't create any stubs. */
4042 if (section->output_section == NULL
4043 || section->output_section->owner != output_bfd)
4046 /* Get the relocs. */
4048 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
4050 if (internal_relocs == NULL)
4051 goto error_ret_free_local;
4053 /* Now examine each relocation. */
4054 irela = internal_relocs;
4055 irelaend = irela + section->reloc_count;
4056 for (; irela < irelaend; irela++)
4058 unsigned int r_type, r_indx;
4059 enum elf_metag_stub_type stub_type;
4060 struct elf_metag_stub_hash_entry *hsh;
4063 bfd_vma destination;
4064 struct elf_metag_link_hash_entry *hh;
4066 const asection *id_sec;
4068 r_type = ELF32_R_TYPE (irela->r_info);
4069 r_indx = ELF32_R_SYM (irela->r_info);
4071 if (r_type >= (unsigned int) R_METAG_MAX)
4073 bfd_set_error (bfd_error_bad_value);
4074 error_ret_free_internal:
4075 if (elf_section_data (section)->relocs == NULL)
4076 free (internal_relocs);
4077 goto error_ret_free_local;
4080 /* Only look for stubs on CALLR and B instructions. */
4081 if (!(r_type == (unsigned int) R_METAG_RELBRANCH ||
4082 r_type == (unsigned int) R_METAG_RELBRANCH_PLT))
4085 /* Now determine the call target, its name, value,
4091 if (r_indx < symtab_hdr->sh_info)
4093 /* It's a local symbol. */
4094 Elf_Internal_Sym *sym;
4095 Elf_Internal_Shdr *hdr;
4098 sym = local_syms + r_indx;
4099 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4100 sym_value = sym->st_value;
4101 shndx = sym->st_shndx;
4102 if (shndx < elf_numsections (input_bfd))
4104 hdr = elf_elfsections (input_bfd)[shndx];
4105 sym_sec = hdr->bfd_section;
4106 destination = (sym_value + irela->r_addend
4107 + sym_sec->output_offset
4108 + sym_sec->output_section->vma);
4113 /* It's an external symbol. */
4116 e_indx = r_indx - symtab_hdr->sh_info;
4117 hh = ((struct elf_metag_link_hash_entry *)
4118 elf_sym_hashes (input_bfd)[e_indx]);
4120 while (hh->eh.root.type == bfd_link_hash_indirect
4121 || hh->eh.root.type == bfd_link_hash_warning)
4122 hh = ((struct elf_metag_link_hash_entry *)
4123 hh->eh.root.u.i.link);
4125 if (hh->eh.root.type == bfd_link_hash_defined
4126 || hh->eh.root.type == bfd_link_hash_defweak)
4128 sym_sec = hh->eh.root.u.def.section;
4129 sym_value = hh->eh.root.u.def.value;
4130 if (hh->eh.plt.offset != (bfd_vma) -1
4131 && hh->eh.dynindx != -1
4132 && r_type == (unsigned int) R_METAG_RELBRANCH_PLT)
4134 sym_sec = htab->splt;
4135 sym_value = hh->eh.plt.offset;
4138 if (sym_sec->output_section != NULL)
4139 destination = (sym_value + irela->r_addend
4140 + sym_sec->output_offset
4141 + sym_sec->output_section->vma);
4145 else if (hh->eh.root.type == bfd_link_hash_undefweak)
4150 else if (hh->eh.root.type == bfd_link_hash_undefined)
4152 if (! (info->unresolved_syms_in_objects == RM_IGNORE
4153 && (ELF_ST_VISIBILITY (hh->eh.other)
4159 bfd_set_error (bfd_error_bad_value);
4160 goto error_ret_free_internal;
4164 /* Determine what (if any) linker stub is needed. */
4165 stub_type = metag_type_of_stub (section, irela, hh,
4167 if (stub_type == metag_stub_none)
4170 /* Support for grouping stub sections. */
4171 id_sec = htab->stub_group[section->id].link_sec;
4173 /* Get the name of this stub. */
4174 stub_name = metag_stub_name (id_sec, sym_sec, hh, irela);
4176 goto error_ret_free_internal;
4178 hsh = metag_stub_hash_lookup (&htab->bstab,
4183 /* The proper stub has already been created. */
4188 hsh = metag_add_stub (stub_name, section, htab);
4192 goto error_ret_free_internal;
4194 hsh->target_value = sym_value;
4195 hsh->target_section = sym_sec;
4196 hsh->stub_type = stub_type;
4198 hsh->addend = irela->r_addend;
4199 stub_changed = TRUE;
4202 /* We're done with the internal relocs, free them. */
4203 if (elf_section_data (section)->relocs == NULL)
4204 free (internal_relocs);
4211 /* OK, we've added some stubs. Find out the new size of the
4213 for (stub_sec = htab->stub_bfd->sections;
4215 stub_sec = stub_sec->next)
4218 bfd_hash_traverse (&htab->bstab, metag_size_one_stub, htab);
4220 /* Ask the linker to do its stuff. */
4221 (*htab->layout_sections_again) ();
4222 stub_changed = FALSE;
4225 free (htab->all_local_syms);
4228 error_ret_free_local:
4229 free (htab->all_local_syms);
4233 /* Build all the stubs associated with the current output file. The
4234 stubs are kept in a hash table attached to the main linker hash
4235 table. This function is called via metagelf_finish in the linker. */
4238 elf_metag_build_stubs (struct bfd_link_info *info)
4241 struct bfd_hash_table *table;
4242 struct elf_metag_link_hash_table *htab;
4244 htab = metag_link_hash_table (info);
4246 for (stub_sec = htab->stub_bfd->sections;
4248 stub_sec = stub_sec->next)
4252 /* Allocate memory to hold the linker stubs. */
4253 size = stub_sec->size;
4254 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4255 if (stub_sec->contents == NULL && size != 0)
4260 /* Build the stubs as directed by the stub hash table. */
4261 table = &htab->bstab;
4262 bfd_hash_traverse (table, metag_build_one_stub, info);
4267 /* Return TRUE if SYM represents a local label symbol. */
4270 elf_metag_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
4272 if (name[0] == '$' && name[1] == 'L')
4274 return _bfd_elf_is_local_label_name (abfd, name);
4277 /* Return address for Ith PLT stub in section PLT, for relocation REL
4278 or (bfd_vma) -1 if it should not be included. */
4281 elf_metag_plt_sym_val (bfd_vma i, const asection *plt,
4282 const arelent *rel ATTRIBUTE_UNUSED)
4284 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4287 #define ELF_ARCH bfd_arch_metag
4288 #define ELF_TARGET_ID METAG_ELF_DATA
4289 #define ELF_MACHINE_CODE EM_METAG
4290 #define ELF_MINPAGESIZE 0x1000
4291 #define ELF_MAXPAGESIZE 0x4000
4292 #define ELF_COMMONPAGESIZE 0x1000
4294 #define TARGET_LITTLE_SYM bfd_elf32_metag_vec
4295 #define TARGET_LITTLE_NAME "elf32-metag"
4297 #define elf_symbol_leading_char '_'
4299 #define elf_info_to_howto_rel NULL
4300 #define elf_info_to_howto metag_info_to_howto_rela
4302 #define bfd_elf32_bfd_is_local_label_name elf_metag_is_local_label_name
4303 #define bfd_elf32_bfd_link_hash_table_create \
4304 elf_metag_link_hash_table_create
4305 #define bfd_elf32_bfd_link_hash_table_free elf_metag_link_hash_table_free
4306 #define elf_backend_relocate_section elf_metag_relocate_section
4307 #define elf_backend_gc_mark_hook elf_metag_gc_mark_hook
4308 #define elf_backend_gc_sweep_hook elf_metag_gc_sweep_hook
4309 #define elf_backend_check_relocs elf_metag_check_relocs
4310 #define elf_backend_create_dynamic_sections elf_metag_create_dynamic_sections
4311 #define elf_backend_adjust_dynamic_symbol elf_metag_adjust_dynamic_symbol
4312 #define elf_backend_finish_dynamic_symbol elf_metag_finish_dynamic_symbol
4313 #define elf_backend_finish_dynamic_sections elf_metag_finish_dynamic_sections
4314 #define elf_backend_size_dynamic_sections elf_metag_size_dynamic_sections
4315 #define elf_backend_omit_section_dynsym \
4316 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4317 #define elf_backend_post_process_headers elf_metag_post_process_headers
4318 #define elf_backend_reloc_type_class elf_metag_reloc_type_class
4319 #define elf_backend_copy_indirect_symbol elf_metag_copy_indirect_symbol
4320 #define elf_backend_plt_sym_val elf_metag_plt_sym_val
4322 #define elf_backend_can_gc_sections 1
4323 #define elf_backend_can_refcount 1
4324 #define elf_backend_got_header_size 12
4325 #define elf_backend_rela_normal 1
4326 #define elf_backend_want_got_sym 0
4327 #define elf_backend_want_plt_sym 0
4328 #define elf_backend_plt_readonly 1
4330 #define bfd_elf32_bfd_reloc_type_lookup metag_reloc_type_lookup
4331 #define bfd_elf32_bfd_reloc_name_lookup metag_reloc_name_lookup
4333 #include "elf32-target.h"