1 /* Meta support for 32-bit ELF
2 Copyright (C) 2013-2014 Free Software Foundation, Inc.
3 Contributed by Imagination Technologies Ltd.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "elf32-metag.h"
27 #include "elf/metag.h"
29 #define GOT_ENTRY_SIZE 4
30 #define ELF_DYNAMIC_INTERPRETER "/lib/ld-uClibc.so.0"
34 1 - with GOT offset */
35 #define METAG_ELF_ABI_VERSION 1
37 static const unsigned int plt0_entry[] =
39 0x02000005, /* MOVT D0Re0, #HI(GOT+4) */
40 0x02000000, /* ADD D0Re0, D0Re0, #LO(GOT+4) */
41 0xb70001e3, /* SETL [A0StP++], D0Re0, D1Re0 */
42 0xc600012a, /* GETD PC, [D0Re0+#4] */
46 static const unsigned int plt0_pic_entry[] =
48 0x82900001, /* ADDT A0.2, CPC0, #0 */
49 0x82100000, /* ADD A0.2, A0.2, #0 */
50 0xa3100c20, /* MOV D0Re0, A0.2 */
51 0xb70001e3, /* SETL [A0StP++], D0Re0, D1Re0 */
52 0xc600012a, /* GETD PC, [D0Re0+#4] */
55 static const unsigned int plt_entry[] =
57 0x82100005, /* MOVT A0.2, #HI(GOT+off) */
58 0x82100000, /* ADD A0.2, A0.2, #LO(GOT+off) */
59 0xc600806a, /* GETD PC, [A0.2] */
60 0x03000004, /* MOV D1Re0, #LO(offset) */
61 0xa0000000 /* B PLT0 */
64 static const unsigned int plt_pic_entry[] =
66 0x82900001, /* ADDT A0.2, CPC0, #HI(GOT+off) */
67 0x82100000, /* ADD A0.2, A0.2, #LO(GOT+off) */
68 0xc600806a, /* GETD PC, [A0.2] */
69 0x03000004, /* MOV D1Re0, #LO(offset) */
70 0xa0000000 /* B PLT0 */
73 /* Variable names follow a coding style.
74 Please follow this (Apps Hungarian) style:
76 Structure/Variable Prefix
77 elf_link_hash_table "etab"
78 elf_link_hash_entry "eh"
80 elf_metag_link_hash_table "htab"
81 elf_metag_link_hash_entry "hh"
83 bfd_link_hash_table "btab"
84 bfd_link_hash_entry "bh"
86 bfd_hash_table containing stubs "bstab"
87 elf_metag_stub_hash_entry "hsh"
89 elf_metag_dyn_reloc_entry "hdh"
91 Always remember to use GNU Coding Style. */
93 #define PLT_ENTRY_SIZE sizeof(plt_entry)
95 static reloc_howto_type elf_metag_howto_table[] =
97 /* High order 16 bit absolute. */
98 HOWTO (R_METAG_HIADDR16, /* type */
100 2, /* size (0 = byte, 1 = short, 2 = long) */
102 FALSE, /* pc_relative */
104 complain_overflow_dont, /* complain_on_overflow */
105 bfd_elf_generic_reloc, /* special_function */
106 "R_METAG_HIADDR16", /* name */
107 FALSE, /* partial_inplace */
109 0x0007fff8, /* dst_mask */
110 FALSE), /* pcrel_offset */
112 /* Low order 16 bit absolute. */
113 HOWTO (R_METAG_LOADDR16, /* type */
115 2, /* size (0 = byte, 1 = short, 2 = long) */
117 FALSE, /* pc_relative */
119 complain_overflow_dont,/* complain_on_overflow */
120 bfd_elf_generic_reloc, /* special_function */
121 "R_METAG_LOADDR16", /* name */
122 FALSE, /* partial_inplace */
124 0x0007fff8, /* dst_mask */
125 FALSE), /* pcrel_offset */
127 /* 32 bit absolute. */
128 HOWTO (R_METAG_ADDR32, /* type */
130 2, /* size (0 = byte, 1 = short, 2 = long) */
132 FALSE, /* pc_relative */
134 complain_overflow_bitfield, /* complain_on_overflow */
135 bfd_elf_generic_reloc, /* special_function */
136 "R_METAG_ADDR32", /* name */
137 FALSE, /* partial_inplace */
138 0x00000000, /* src_mask */
139 0xffffffff, /* dst_mask */
140 FALSE), /* pcrel_offset */
143 HOWTO (R_METAG_NONE, /* type */
145 0, /* size (0 = byte, 1 = short, 2 = long) */
147 FALSE, /* pc_relative */
149 complain_overflow_dont, /* complain_on_overflow */
150 bfd_elf_generic_reloc, /* special_function */
151 "R_METAG_NONE", /* name */
152 FALSE, /* partial_inplace */
155 FALSE), /* pcrel_offset */
157 /* 19 bit pc relative */
158 HOWTO (R_METAG_RELBRANCH, /* type */
160 2, /* size (0 = byte, 1 = short, 2 = long) */
162 TRUE, /* pc_relative */
164 complain_overflow_signed, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_METAG_RELBRANCH", /* name */
167 FALSE, /* partial_inplace */
169 0x00ffffe0, /* dst_mask */
170 FALSE), /* pcrel_offset */
173 HOWTO (R_METAG_GETSETOFF, /* type */
175 1, /* size (0 = byte, 1 = short, 2 = long) */
177 FALSE, /* pc_relative */
179 complain_overflow_dont, /* complain_on_overflow */
180 bfd_elf_generic_reloc, /* special_function */
181 "R_METAG_GETSETOFF", /* name */
182 FALSE, /* partial_inplace */
185 FALSE), /* pcrel_offset */
212 HOWTO (R_METAG_GNU_VTINHERIT, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_METAG_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 HOWTO (R_METAG_GNU_VTENTRY, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE, /* pc_relative */
232 complain_overflow_dont, /* complain_on_overflow */
233 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
234 "R_METAG_GNU_VTENTRY", /* name */
235 FALSE, /* partial_inplace */
238 FALSE), /* pcrel_offset */
240 /* High order 16 bit GOT offset */
241 HOWTO (R_METAG_HI16_GOTOFF, /* type */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
245 FALSE, /* pc_relative */
247 complain_overflow_dont, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_METAG_HI16_GOTOFF", /* name */
250 FALSE, /* partial_inplace */
252 0x0007fff8, /* dst_mask */
253 FALSE), /* pcrel_offset */
255 /* Low order 16 bit GOT offset */
256 HOWTO (R_METAG_LO16_GOTOFF, /* type */
258 2, /* size (0 = byte, 1 = short, 2 = long) */
260 FALSE, /* pc_relative */
262 complain_overflow_dont, /* complain_on_overflow */
263 bfd_elf_generic_reloc, /* special_function */
264 "R_METAG_LO16_GOTOFF", /* name */
265 FALSE, /* partial_inplace */
267 0x0007fff8, /* dst_mask */
268 FALSE), /* pcrel_offset */
270 /* GET/SET GOT offset */
271 HOWTO (R_METAG_GETSET_GOTOFF, /* type */
273 1, /* size (0 = byte, 1 = short, 2 = long) */
275 FALSE, /* pc_relative */
277 complain_overflow_dont, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_METAG_GETSET_GOTOFF", /* name */
280 FALSE, /* partial_inplace */
283 FALSE), /* pcrel_offset */
285 /* GET/SET GOT relative */
286 HOWTO (R_METAG_GETSET_GOT, /* type */
288 1, /* size (0 = byte, 1 = short, 2 = long) */
290 FALSE, /* pc_relative */
292 complain_overflow_dont, /* complain_on_overflow */
293 bfd_elf_generic_reloc, /* special_function */
294 "R_METAG_GETSET_GOT", /* name */
295 FALSE, /* partial_inplace */
298 FALSE), /* pcrel_offset */
300 /* High order 16 bit GOT reference */
301 HOWTO (R_METAG_HI16_GOTPC, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 FALSE, /* pc_relative */
307 complain_overflow_dont, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_METAG_HI16_GOTPC", /* name */
310 FALSE, /* partial_inplace */
312 0x0007fff8, /* dst_mask */
313 FALSE), /* pcrel_offset */
315 /* Low order 16 bit GOT reference */
316 HOWTO (R_METAG_LO16_GOTPC, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 FALSE, /* pc_relative */
322 complain_overflow_dont, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_METAG_LO16_GOTPC", /* name */
325 FALSE, /* partial_inplace */
327 0x0007fff8, /* dst_mask */
328 FALSE), /* pcrel_offset */
330 /* High order 16 bit PLT */
331 HOWTO (R_METAG_HI16_PLT, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE, /* pc_relative */
337 complain_overflow_dont, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_METAG_HI16_PLT", /* name */
340 FALSE, /* partial_inplace */
342 0x0007fff8, /* dst_mask */
343 FALSE), /* pcrel_offset */
345 /* Low order 16 bit PLT */
346 HOWTO (R_METAG_LO16_PLT, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_dont, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_METAG_LO16_PLT", /* name */
355 FALSE, /* partial_inplace */
357 0xffffffff, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 HOWTO (R_METAG_RELBRANCH_PLT, /* type */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
364 TRUE, /* pc_relative */
366 complain_overflow_signed, /* complain_on_overflow */
367 bfd_elf_generic_reloc, /* special_function */
368 "R_METAG_RELBRANCH_PLT", /* name */
369 FALSE, /* partial_inplace */
371 0x00ffffe0, /* dst_mask */
372 FALSE), /* pcrel_offset */
374 /* Dummy relocs used by the linker internally. */
375 HOWTO (R_METAG_GOTOFF, /* type */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
379 FALSE, /* pc_relative */
381 complain_overflow_bitfield, /* complain_on_overflow */
382 bfd_elf_generic_reloc, /* special_function */
383 "R_METAG_GOTOFF", /* name */
384 FALSE, /* partial_inplace */
385 0xffffffff, /* src_mask */
386 0xffffffff, /* dst_mask */
387 FALSE), /* pcrel_offset */
389 HOWTO (R_METAG_PLT, /* type */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
393 FALSE, /* pc_relative */
395 complain_overflow_bitfield, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
397 "R_METAG_GOTOFF", /* name */
398 FALSE, /* partial_inplace */
399 0xffffffff, /* src_mask */
400 0xffffffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
403 /* This is used only by the dynamic linker. The symbol should exist
404 both in the object being run and in some shared library. The
405 dynamic linker copies the data addressed by the symbol from the
406 shared library into the object, because the object being
407 run has to have the data at some particular address. */
408 HOWTO (R_METAG_COPY, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE, /* pc_relative */
414 complain_overflow_bitfield, /* complain_on_overflow */
415 bfd_elf_generic_reloc, /* special_function */
416 "R_METAG_COPY", /* name */
417 FALSE, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE), /* pcrel_offset */
422 /* Marks a procedure linkage table entry for a symbol. */
423 HOWTO (R_METAG_JMP_SLOT, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE, /* pc_relative */
429 complain_overflow_bitfield, /* complain_on_overflow */
430 bfd_elf_generic_reloc, /* special_function */
431 "R_METAG_JMP_SLOT", /* name */
432 FALSE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
437 /* Used only by the dynamic linker. When the object is run, this
438 longword is set to the load address of the object, plus the
440 HOWTO (R_METAG_RELATIVE, /* type */
442 2, /* size (0 = byte, 1 = short, 2 = long) */
444 FALSE, /* pc_relative */
446 complain_overflow_bitfield, /* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_METAG_RELATIVE", /* name */
449 FALSE, /* partial_inplace */
450 0xffffffff, /* src_mask */
451 0xffffffff, /* dst_mask */
452 FALSE), /* pcrel_offset */
454 HOWTO (R_METAG_GLOB_DAT, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE, /* pc_relative */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* special_function */
462 "R_METAG_GLOB_DAT", /* name */
463 FALSE, /* partial_inplace */
464 0xffffffff, /* src_mask */
465 0xffffffff, /* dst_mask */
466 FALSE), /* pcrel_offset */
468 HOWTO (R_METAG_TLS_GD, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE, /* pc_relative */
474 complain_overflow_dont, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_METAG_TLS_GD", /* name */
477 FALSE, /* partial_inplace */
479 0x0007fff8, /* dst_mask */
480 FALSE), /* pcrel_offset */
482 HOWTO (R_METAG_TLS_LDM, /* type */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE, /* pc_relative */
488 complain_overflow_bitfield, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* special_function */
490 "R_METAG_TLS_LDM", /* name */
491 FALSE, /* partial_inplace */
493 0x0007fff8, /* dst_mask */
494 FALSE), /* pcrel_offset */
496 HOWTO (R_METAG_TLS_LDO_HI16, /* type */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
500 FALSE, /* pc_relative */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_METAG_TLS_LDO_HI16", /* name */
505 FALSE, /* partial_inplace */
507 0x0007fff8, /* dst_mask */
508 FALSE), /* pcrel_offset */
510 HOWTO (R_METAG_TLS_LDO_LO16, /* type */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
514 FALSE, /* pc_relative */
516 complain_overflow_bitfield, /* complain_on_overflow */
517 bfd_elf_generic_reloc, /* special_function */
518 "R_METAG_TLS_LDO_LO16", /* name */
519 FALSE, /* partial_inplace */
521 0x0007fff8, /* dst_mask */
522 FALSE), /* pcrel_offset */
524 /* Dummy reloc used by the linker internally. */
525 HOWTO (R_METAG_TLS_LDO, /* type */
527 2, /* size (0 = byte, 1 = short, 2 = long) */
529 FALSE, /* pc_relative */
531 complain_overflow_bitfield, /* complain_on_overflow */
532 bfd_elf_generic_reloc, /* special_function */
533 "R_METAG_TLS_LDO", /* name */
534 FALSE, /* partial_inplace */
536 0x0007fff8, /* dst_mask */
537 FALSE), /* pcrel_offset */
539 HOWTO (R_METAG_TLS_IE, /* type */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE, /* pc_relative */
545 complain_overflow_dont, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_METAG_TLS_IE", /* name */
548 FALSE, /* partial_inplace */
550 0x0007ff80, /* dst_mask */
551 FALSE), /* pcrel_offset */
553 /* Dummy reloc used by the linker internally. */
554 HOWTO (R_METAG_TLS_IENONPIC, /* type */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
558 FALSE, /* pc_relative */
560 complain_overflow_dont, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_METAG_TLS_IENONPIC", /* name */
563 FALSE, /* partial_inplace */
565 0x0007fff8, /* dst_mask */
566 FALSE), /* pcrel_offset */
568 HOWTO (R_METAG_TLS_IENONPIC_HI16,/* type */
570 2, /* size (0 = byte, 1 = short, 2 = long) */
572 FALSE, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_METAG_TLS_IENONPIC_HI16", /* name */
577 FALSE, /* partial_inplace */
579 0x0007fff8, /* dst_mask */
580 FALSE), /* pcrel_offset */
582 HOWTO (R_METAG_TLS_IENONPIC_LO16,/* type */
584 2, /* size (0 = byte, 1 = short, 2 = long) */
586 FALSE, /* pc_relative */
588 complain_overflow_dont, /* complain_on_overflow */
589 bfd_elf_generic_reloc, /* special_function */
590 "R_METAG_TLS_IENONPIC_LO16", /* name */
591 FALSE, /* partial_inplace */
593 0x0007fff8, /* dst_mask */
594 FALSE), /* pcrel_offset */
596 HOWTO (R_METAG_TLS_TPOFF, /* type */
598 2, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE, /* pc_relative */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_METAG_TLS_TPOFF", /* name */
605 FALSE, /* partial_inplace */
607 0xffffffff, /* dst_mask */
608 FALSE), /* pcrel_offset */
610 HOWTO (R_METAG_TLS_DTPMOD, /* type */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
614 FALSE, /* pc_relative */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_METAG_TLS_DTPMOD", /* name */
619 FALSE, /* partial_inplace */
621 0xffffffff, /* dst_mask */
622 FALSE), /* pcrel_offset */
624 HOWTO (R_METAG_TLS_DTPOFF, /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE, /* pc_relative */
630 complain_overflow_bitfield, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
632 "R_METAG_TLS_DTPOFF", /* name */
633 FALSE, /* partial_inplace */
635 0xffffffff, /* dst_mask */
636 FALSE), /* pcrel_offset */
638 /* Dummy reloc used by the linker internally. */
639 HOWTO (R_METAG_TLS_LE, /* type */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
643 FALSE, /* pc_relative */
645 complain_overflow_bitfield, /* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
647 "R_METAG_TLS_LE", /* name */
648 FALSE, /* partial_inplace */
650 0xffffffff, /* dst_mask */
651 FALSE), /* pcrel_offset */
653 HOWTO (R_METAG_TLS_LE_HI16, /* type */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
657 FALSE, /* pc_relative */
659 complain_overflow_dont, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_METAG_TLS_LE_HI16", /* name */
662 FALSE, /* partial_inplace */
664 0x0007fff8, /* dst_mask */
665 FALSE), /* pcrel_offset */
667 HOWTO (R_METAG_TLS_LE_LO16, /* type */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE, /* pc_relative */
673 complain_overflow_dont, /* complain_on_overflow */
674 bfd_elf_generic_reloc, /* special_function */
675 "R_METAG_TLS_LE_LO16", /* name */
676 FALSE, /* partial_inplace */
678 0x0007fff8, /* dst_mask */
679 FALSE), /* pcrel_offset */
683 #define BRANCH_BITS 19
685 /* The GOT is typically accessed using a [GS]ETD instruction. The size of the
686 immediate offset which can be used in such instructions therefore limits
687 the usable size of the GOT. If the base register for the [GS]ETD (A1LbP)
688 is pointing to the base of the GOT then the size is limited to the maximum
689 11 bits unsigned dword offset, or 2^13 = 0x2000 bytes. However the offset
690 in a [GS]ETD instruction is signed, so by setting the base address register
691 to an offset of that 0x2000 byte maximum unsigned offset from the base of
692 the GOT we can use negative offsets in addition to positive. This
693 effectively doubles the usable GOT size to 0x4000 bytes. */
694 #define GOT_REG_OFFSET 0x2000
696 struct metag_reloc_map
698 bfd_reloc_code_real_type bfd_reloc_val;
699 unsigned int metag_reloc_val;
702 static const struct metag_reloc_map metag_reloc_map [] =
704 { BFD_RELOC_NONE, R_METAG_NONE },
705 { BFD_RELOC_32, R_METAG_ADDR32 },
706 { BFD_RELOC_METAG_HIADDR16, R_METAG_HIADDR16 },
707 { BFD_RELOC_METAG_LOADDR16, R_METAG_LOADDR16 },
708 { BFD_RELOC_METAG_RELBRANCH, R_METAG_RELBRANCH },
709 { BFD_RELOC_METAG_GETSETOFF, R_METAG_GETSETOFF },
710 { BFD_RELOC_VTABLE_INHERIT, R_METAG_GNU_VTINHERIT },
711 { BFD_RELOC_VTABLE_ENTRY, R_METAG_GNU_VTENTRY },
712 { BFD_RELOC_METAG_REL8, R_METAG_REL8 },
713 { BFD_RELOC_METAG_REL16, R_METAG_REL16 },
714 { BFD_RELOC_METAG_HI16_GOTOFF, R_METAG_HI16_GOTOFF },
715 { BFD_RELOC_METAG_LO16_GOTOFF, R_METAG_LO16_GOTOFF },
716 { BFD_RELOC_METAG_GETSET_GOTOFF, R_METAG_GETSET_GOTOFF },
717 { BFD_RELOC_METAG_GETSET_GOT, R_METAG_GETSET_GOT },
718 { BFD_RELOC_METAG_HI16_GOTPC, R_METAG_HI16_GOTPC },
719 { BFD_RELOC_METAG_LO16_GOTPC, R_METAG_LO16_GOTPC },
720 { BFD_RELOC_METAG_HI16_PLT, R_METAG_HI16_PLT },
721 { BFD_RELOC_METAG_LO16_PLT, R_METAG_LO16_PLT },
722 { BFD_RELOC_METAG_RELBRANCH_PLT, R_METAG_RELBRANCH_PLT },
723 { BFD_RELOC_METAG_GOTOFF, R_METAG_GOTOFF },
724 { BFD_RELOC_METAG_PLT, R_METAG_PLT },
725 { BFD_RELOC_METAG_COPY, R_METAG_COPY },
726 { BFD_RELOC_METAG_JMP_SLOT, R_METAG_JMP_SLOT },
727 { BFD_RELOC_METAG_RELATIVE, R_METAG_RELATIVE },
728 { BFD_RELOC_METAG_GLOB_DAT, R_METAG_GLOB_DAT },
729 { BFD_RELOC_METAG_TLS_GD, R_METAG_TLS_GD },
730 { BFD_RELOC_METAG_TLS_LDM, R_METAG_TLS_LDM },
731 { BFD_RELOC_METAG_TLS_LDO_HI16, R_METAG_TLS_LDO_HI16 },
732 { BFD_RELOC_METAG_TLS_LDO_LO16, R_METAG_TLS_LDO_LO16 },
733 { BFD_RELOC_METAG_TLS_LDO, R_METAG_TLS_LDO },
734 { BFD_RELOC_METAG_TLS_IE, R_METAG_TLS_IE },
735 { BFD_RELOC_METAG_TLS_IENONPIC, R_METAG_TLS_IENONPIC },
736 { BFD_RELOC_METAG_TLS_IENONPIC_HI16, R_METAG_TLS_IENONPIC_HI16 },
737 { BFD_RELOC_METAG_TLS_IENONPIC_LO16, R_METAG_TLS_IENONPIC_LO16 },
738 { BFD_RELOC_METAG_TLS_TPOFF, R_METAG_TLS_TPOFF },
739 { BFD_RELOC_METAG_TLS_DTPMOD, R_METAG_TLS_DTPMOD },
740 { BFD_RELOC_METAG_TLS_DTPOFF, R_METAG_TLS_DTPOFF },
741 { BFD_RELOC_METAG_TLS_LE, R_METAG_TLS_LE },
742 { BFD_RELOC_METAG_TLS_LE_HI16, R_METAG_TLS_LE_HI16 },
743 { BFD_RELOC_METAG_TLS_LE_LO16, R_METAG_TLS_LE_LO16 },
746 enum elf_metag_stub_type
748 metag_stub_long_branch,
749 metag_stub_long_branch_shared,
753 struct elf_metag_stub_hash_entry
755 /* Base hash table entry structure. */
756 struct bfd_hash_entry bh_root;
758 /* The stub section. */
761 /* Offset within stub_sec of the beginning of this stub. */
764 /* Given the symbol's value and its section we can determine its final
765 value when building the stubs (so the stub knows where to jump. */
766 bfd_vma target_value;
767 asection *target_section;
769 enum elf_metag_stub_type stub_type;
771 /* The symbol table entry, if any, that this was derived from. */
772 struct elf_metag_link_hash_entry *hh;
774 /* And the reloc addend that this was derived from. */
777 /* Where this stub is being called from, or, in the case of combined
778 stub sections, the first input section in the group. */
782 struct elf_metag_link_hash_entry
784 struct elf_link_hash_entry eh;
786 /* A pointer to the most recently used stub hash entry against this
788 struct elf_metag_stub_hash_entry *hsh_cache;
790 /* Used to count relocations for delayed sizing of relocation
792 struct elf_metag_dyn_reloc_entry {
794 /* Next relocation in the chain. */
795 struct elf_metag_dyn_reloc_entry *hdh_next;
797 /* The input section of the reloc. */
800 /* Number of relocs copied in this section. */
803 /* Number of relative relocs copied for the input section. */
804 bfd_size_type relative_count;
809 GOT_UNKNOWN = 0, GOT_NORMAL = 1, GOT_TLS_IE = 2, GOT_TLS_LDM = 4, GOT_TLS_GD = 8
813 struct elf_metag_link_hash_table
815 /* The main hash table. */
816 struct elf_link_hash_table etab;
818 /* The stub hash table. */
819 struct bfd_hash_table bstab;
821 /* Linker stub bfd. */
824 /* Linker call-backs. */
825 asection * (*add_stub_section) (const char *, asection *);
826 void (*layout_sections_again) (void);
828 /* Array to keep track of which stub sections have been created, and
829 information on stub grouping. */
832 /* This is the section to which stubs in the group will be
835 /* The stub section. */
839 /* Assorted information used by elf_metag_size_stubs. */
840 unsigned int bfd_count;
842 asection **input_list;
843 Elf_Internal_Sym **all_local_syms;
845 /* Short-cuts to get to dynamic linker sections. */
854 /* Small local sym cache. */
855 struct sym_cache sym_cache;
857 /* Data for LDM relocations. */
860 bfd_signed_vma refcount;
865 /* Return the base vma address which should be subtracted from the
866 real address when resolving a dtpoff relocation. This is PT_TLS
869 dtpoff_base (struct bfd_link_info *info)
871 /* If tls_sec is NULL, we should have signalled an error already. */
872 if (elf_hash_table (info)->tls_sec == NULL)
874 return elf_hash_table (info)->tls_sec->vma;
877 /* Return the relocation value for R_METAG_TLS_IE */
879 tpoff (struct bfd_link_info *info, bfd_vma address)
881 /* If tls_sec is NULL, we should have signalled an error already. */
882 if (elf_hash_table (info)->tls_sec == NULL)
884 /* METAG TLS ABI is variant I and static TLS blocks start just after
885 tcbhead structure which has 2 pointer fields. */
886 return (address - elf_hash_table (info)->tls_sec->vma
887 + align_power ((bfd_vma) 8,
888 elf_hash_table (info)->tls_sec->alignment_power));
892 metag_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
894 Elf_Internal_Rela *dst)
898 r_type = ELF32_R_TYPE (dst->r_info);
899 BFD_ASSERT (r_type < (unsigned int) R_METAG_MAX);
900 cache_ptr->howto = & elf_metag_howto_table [r_type];
903 static reloc_howto_type *
904 metag_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
905 bfd_reloc_code_real_type code)
909 for (i = 0; i < sizeof (metag_reloc_map) / sizeof (metag_reloc_map[0]); i++)
910 if (metag_reloc_map [i].bfd_reloc_val == code)
911 return & elf_metag_howto_table [metag_reloc_map[i].metag_reloc_val];
916 static reloc_howto_type *
917 metag_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
922 for (i = 0; i < sizeof (elf_metag_howto_table) / sizeof (elf_metag_howto_table[0]); i++)
923 if (elf_metag_howto_table[i].name != NULL
924 && strcasecmp (elf_metag_howto_table[i].name, r_name) == 0)
925 return &elf_metag_howto_table[i];
930 /* Various hash macros and functions. */
931 #define metag_link_hash_table(p) \
932 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
933 == METAG_ELF_DATA ? ((struct elf_metag_link_hash_table *) ((p)->hash)) : NULL)
935 #define metag_elf_hash_entry(ent) \
936 ((struct elf_metag_link_hash_entry *)(ent))
938 #define metag_stub_hash_entry(ent) \
939 ((struct elf_metag_stub_hash_entry *)(ent))
941 #define metag_stub_hash_lookup(table, string, create, copy) \
942 ((struct elf_metag_stub_hash_entry *) \
943 bfd_hash_lookup ((table), (string), (create), (copy)))
945 #define metag_elf_local_got_tls_type(abfd) \
946 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info)))
948 /* Assorted hash table functions. */
950 /* Initialize an entry in the stub hash table. */
952 static struct bfd_hash_entry *
953 stub_hash_newfunc (struct bfd_hash_entry *entry,
954 struct bfd_hash_table *table,
957 /* Allocate the structure if it has not already been allocated by a
961 entry = bfd_hash_allocate (table,
962 sizeof (struct elf_metag_stub_hash_entry));
967 /* Call the allocation method of the superclass. */
968 entry = bfd_hash_newfunc (entry, table, string);
971 struct elf_metag_stub_hash_entry *hsh;
973 /* Initialize the local fields. */
974 hsh = (struct elf_metag_stub_hash_entry *) entry;
975 hsh->stub_sec = NULL;
976 hsh->stub_offset = 0;
977 hsh->target_value = 0;
978 hsh->target_section = NULL;
979 hsh->stub_type = metag_stub_long_branch;
987 /* Initialize an entry in the link hash table. */
989 static struct bfd_hash_entry *
990 metag_link_hash_newfunc (struct bfd_hash_entry *entry,
991 struct bfd_hash_table *table,
994 /* Allocate the structure if it has not already been allocated by a
998 entry = bfd_hash_allocate (table,
999 sizeof (struct elf_metag_link_hash_entry));
1004 /* Call the allocation method of the superclass. */
1005 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1008 struct elf_metag_link_hash_entry *hh;
1010 /* Initialize the local fields. */
1011 hh = (struct elf_metag_link_hash_entry *) entry;
1012 hh->hsh_cache = NULL;
1013 hh->dyn_relocs = NULL;
1014 hh->tls_type = GOT_UNKNOWN;
1020 /* Free the derived linker hash table. */
1023 elf_metag_link_hash_table_free (struct bfd_link_hash_table *btab)
1025 struct elf_metag_link_hash_table *htab
1026 = (struct elf_metag_link_hash_table *) btab;
1028 bfd_hash_table_free (&htab->bstab);
1029 _bfd_elf_link_hash_table_free (btab);
1032 /* Create the derived linker hash table. The Meta ELF port uses the derived
1033 hash table to keep information specific to the Meta ELF linker (without
1034 using static variables). */
1036 static struct bfd_link_hash_table *
1037 elf_metag_link_hash_table_create (bfd *abfd)
1039 struct elf_metag_link_hash_table *htab;
1040 bfd_size_type amt = sizeof (*htab);
1042 htab = bfd_zmalloc (amt);
1046 if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd,
1047 metag_link_hash_newfunc,
1048 sizeof (struct elf_metag_link_hash_entry),
1055 /* Init the stub hash table too. */
1056 if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
1057 sizeof (struct elf_metag_stub_hash_entry)))
1059 (void) elf_metag_link_hash_table_free;
1061 return &htab->etab.root;
1064 /* Section name for stubs is the associated section name plus this
1066 #define STUB_SUFFIX ".stub"
1068 /* Build a name for an entry in the stub hash table. */
1071 metag_stub_name (const asection *input_section,
1072 const asection *sym_sec,
1073 const struct elf_metag_link_hash_entry *hh,
1074 const Elf_Internal_Rela *rel)
1081 len = 8 + 1 + strlen (hh->eh.root.root.string) + 1 + 8 + 1;
1082 stub_name = bfd_malloc (len);
1083 if (stub_name != NULL)
1085 sprintf (stub_name, "%08x_%s+%x",
1086 input_section->id & 0xffffffff,
1087 hh->eh.root.root.string,
1088 (int) rel->r_addend & 0xffffffff);
1093 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1094 stub_name = bfd_malloc (len);
1095 if (stub_name != NULL)
1097 sprintf (stub_name, "%08x_%x:%x+%x",
1098 input_section->id & 0xffffffff,
1099 sym_sec->id & 0xffffffff,
1100 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
1101 (int) rel->r_addend & 0xffffffff);
1107 /* Look up an entry in the stub hash. Stub entries are cached because
1108 creating the stub name takes a bit of time. */
1110 static struct elf_metag_stub_hash_entry *
1111 metag_get_stub_entry (const asection *input_section,
1112 const asection *sym_sec,
1113 struct elf_metag_link_hash_entry *hh,
1114 const Elf_Internal_Rela *rel,
1115 struct elf_metag_link_hash_table *htab)
1117 struct elf_metag_stub_hash_entry *hsh;
1118 const asection *id_sec;
1120 /* If this input section is part of a group of sections sharing one
1121 stub section, then use the id of the first section in the group.
1122 Stub names need to include a section id, as there may well be
1123 more than one stub used to reach say, printf, and we need to
1124 distinguish between them. */
1125 id_sec = htab->stub_group[input_section->id].link_sec;
1127 if (hh != NULL && hh->hsh_cache != NULL
1128 && hh->hsh_cache->hh == hh
1129 && hh->hsh_cache->id_sec == id_sec)
1131 hsh = hh->hsh_cache;
1137 stub_name = metag_stub_name (id_sec, sym_sec, hh, rel);
1138 if (stub_name == NULL)
1141 hsh = metag_stub_hash_lookup (&htab->bstab,
1142 stub_name, FALSE, FALSE);
1145 hh->hsh_cache = hsh;
1153 /* Add a new stub entry to the stub hash. Not all fields of the new
1154 stub entry are initialised. */
1156 static struct elf_metag_stub_hash_entry *
1157 metag_add_stub (const char *stub_name,
1159 struct elf_metag_link_hash_table *htab)
1163 struct elf_metag_stub_hash_entry *hsh;
1165 link_sec = htab->stub_group[section->id].link_sec;
1166 stub_sec = htab->stub_group[section->id].stub_sec;
1167 if (stub_sec == NULL)
1169 stub_sec = htab->stub_group[link_sec->id].stub_sec;
1170 if (stub_sec == NULL)
1176 namelen = strlen (link_sec->name);
1177 len = namelen + sizeof (STUB_SUFFIX);
1178 s_name = bfd_alloc (htab->stub_bfd, len);
1182 memcpy (s_name, link_sec->name, namelen);
1183 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
1185 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
1186 if (stub_sec == NULL)
1188 htab->stub_group[link_sec->id].stub_sec = stub_sec;
1190 htab->stub_group[section->id].stub_sec = stub_sec;
1193 /* Enter this entry into the linker stub hash table. */
1194 hsh = metag_stub_hash_lookup (&htab->bstab, stub_name,
1198 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
1204 hsh->stub_sec = stub_sec;
1205 hsh->stub_offset = 0;
1206 hsh->id_sec = link_sec;
1210 /* Check a signed integer value can be represented in the given number
1214 within_signed_range (int value, unsigned int bits)
1216 int min_val = -(1 << (bits - 1));
1217 int max_val = (1 << (bits - 1)) - 1;
1218 return (value <= max_val) && (value >= min_val);
1221 /* Perform a relocation as part of a final link. */
1223 static bfd_reloc_status_type
1224 metag_final_link_relocate (reloc_howto_type *howto,
1226 asection *input_section,
1228 Elf_Internal_Rela *rel,
1230 struct elf_metag_link_hash_entry *hh,
1231 struct elf_metag_link_hash_table *htab,
1234 bfd_reloc_status_type r = bfd_reloc_ok;
1235 bfd_byte *hit_data = contents + rel->r_offset;
1236 int opcode, op_shift, op_extended, l1, l2;
1237 bfd_signed_vma srel, addend = rel->r_addend;
1238 struct elf_metag_stub_hash_entry *hsh = NULL;
1241 /* Find out where we are and where we're going. */
1242 location = (rel->r_offset +
1243 input_section->output_offset +
1244 input_section->output_section->vma);
1246 switch (howto->type)
1248 case R_METAG_RELBRANCH:
1249 case R_METAG_RELBRANCH_PLT:
1250 /* Make it a pc relative offset. */
1251 relocation -= location;
1253 case R_METAG_TLS_GD:
1254 case R_METAG_TLS_IE:
1255 relocation -= elf_gp (input_section->output_section->owner);
1261 switch (howto->type)
1263 case R_METAG_RELBRANCH_PLT:
1264 case R_METAG_RELBRANCH:
1265 opcode = bfd_get_32 (input_bfd, hit_data);
1267 srel = (bfd_signed_vma) relocation;
1270 /* If the branch is out of reach, then redirect the
1271 call to the local stub for this function. */
1272 if (srel > ((1 << (BRANCH_BITS + 1)) - 1) ||
1273 (srel < - (1 << (BRANCH_BITS + 1))))
1275 if (sym_sec == NULL)
1278 hsh = metag_get_stub_entry (input_section, sym_sec,
1281 return bfd_reloc_undefined;
1283 /* Munge up the value and addend so that we call the stub
1284 rather than the procedure directly. */
1285 srel = (hsh->stub_offset
1286 + hsh->stub_sec->output_offset
1287 + hsh->stub_sec->output_section->vma);
1293 if (!within_signed_range (srel, BRANCH_BITS))
1295 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1298 return bfd_reloc_overflow;
1301 opcode &= ~(0x7ffff << 5);
1302 opcode |= ((srel & 0x7ffff) << 5);
1304 bfd_put_32 (input_bfd, opcode, hit_data);
1306 case R_METAG_GETSETOFF:
1307 case R_METAG_GETSET_GOT:
1308 case R_METAG_GETSET_GOTOFF:
1309 opcode = bfd_get_32 (input_bfd, hit_data);
1311 srel = (bfd_signed_vma) relocation;
1314 /* Is this a standard or extended GET/SET? */
1315 if ((opcode & 0xf0000000) == 0xa0000000)
1317 /* Extended GET/SET. */
1324 /* Standard GET/SET. */
1325 l1 = opcode & 0x01000000;
1326 l2 = opcode & 0x04000000;
1330 /* Calculate the width of the GET/SET and how much we need to
1331 shift the result by. */
1343 /* GET/SET offsets are scaled by the width of the transfer. */
1344 srel = srel >> op_shift;
1346 /* Extended GET/SET has signed 12 bits of offset, standard has
1350 if (!within_signed_range (srel, 12))
1352 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1355 return bfd_reloc_overflow;
1357 opcode &= ~(0xfff << 7);
1358 opcode |= ((srel & 0xfff) << 7);
1362 if (!within_signed_range (srel, 5))
1364 if (hh && hh->eh.root.type == bfd_link_hash_undefweak)
1367 return bfd_reloc_overflow;
1369 opcode &= ~(0x3f << 8);
1370 opcode |= ((srel & 0x3f) << 8);
1373 bfd_put_32 (input_bfd, opcode, hit_data);
1375 case R_METAG_TLS_GD:
1376 case R_METAG_TLS_LDM:
1377 opcode = bfd_get_32 (input_bfd, hit_data);
1379 if ((bfd_signed_vma)relocation < 0)
1381 /* sign extend immediate */
1382 if ((opcode & 0xf2000001) == 0x02000000)
1384 /* ADD De.e,Dx.r,#I16 */
1388 return bfd_reloc_overflow;
1391 bfd_put_32 (input_bfd, opcode, hit_data);
1393 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1394 contents, rel->r_offset,
1395 relocation, rel->r_addend);
1398 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1399 contents, rel->r_offset,
1400 relocation, rel->r_addend);
1406 /* This is defined because R_METAG_NONE != 0...
1407 See RELOC_AGAINST_DISCARDED_SECTION for details. */
1408 #define METAG_RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
1409 rel, relend, howto, contents) \
1411 _bfd_clear_contents (howto, input_bfd, input_section, \
1412 contents + rel->r_offset); \
1414 if (info->relocatable \
1415 && (input_section->flags & SEC_DEBUGGING)) \
1417 /* Only remove relocations in debug sections since other \
1418 sections may require relocations. */ \
1419 Elf_Internal_Shdr *rel_hdr; \
1421 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
1423 /* Avoid empty output section. */ \
1424 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
1426 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1427 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
1428 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1430 memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
1432 input_section->reloc_count--; \
1439 rel->r_info = R_METAG_NONE; \
1440 rel->r_addend = 0; \
1444 /* Relocate a META ELF section.
1446 The RELOCATE_SECTION function is called by the new ELF backend linker
1447 to handle the relocations for a section.
1449 The relocs are always passed as Rela structures; if the section
1450 actually uses Rel structures, the r_addend field will always be
1453 This function is responsible for adjusting the section contents as
1454 necessary, and (if using Rela relocs and generating a relocatable
1455 output file) adjusting the reloc addend as necessary.
1457 This function does not have to worry about setting the reloc
1458 address or the reloc symbol index.
1460 LOCAL_SYMS is a pointer to the swapped in local symbols.
1462 LOCAL_SECTIONS is an array giving the section in the input file
1463 corresponding to the st_shndx field of each local symbol.
1465 The global hash table entry for the global symbols can be found
1466 via elf_sym_hashes (input_bfd).
1468 When generating relocatable output, this function must handle
1469 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1470 going to be the section symbol corresponding to the output
1471 section, which means that the addend must be adjusted
1475 elf_metag_relocate_section (bfd *output_bfd,
1476 struct bfd_link_info *info,
1478 asection *input_section,
1480 Elf_Internal_Rela *relocs,
1481 Elf_Internal_Sym *local_syms,
1482 asection **local_sections)
1484 bfd_vma *local_got_offsets;
1485 Elf_Internal_Shdr *symtab_hdr;
1486 struct elf_link_hash_entry **eh_syms;
1487 struct elf_metag_link_hash_table *htab;
1488 Elf_Internal_Rela *rel;
1489 Elf_Internal_Rela *relend;
1492 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1493 eh_syms = elf_sym_hashes (input_bfd);
1494 relend = relocs + input_section->reloc_count;
1496 htab = metag_link_hash_table (info);
1497 local_got_offsets = elf_local_got_offsets (input_bfd);
1501 for (rel = relocs; rel < relend; rel ++)
1503 reloc_howto_type *howto;
1504 unsigned long r_symndx;
1505 Elf_Internal_Sym *sym;
1507 struct elf_metag_link_hash_entry *hh;
1509 bfd_reloc_status_type r;
1513 r_type = ELF32_R_TYPE (rel->r_info);
1515 if (r_type == R_METAG_GNU_VTINHERIT
1516 || r_type == R_METAG_GNU_VTENTRY
1517 || r_type == R_METAG_NONE)
1520 r_symndx = ELF32_R_SYM (rel->r_info);
1522 howto = elf_metag_howto_table + ELF32_R_TYPE (rel->r_info);
1527 if (r_symndx < symtab_hdr->sh_info)
1529 sym = local_syms + r_symndx;
1530 sec = local_sections [r_symndx];
1531 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1533 name = bfd_elf_string_from_elf_section
1534 (input_bfd, symtab_hdr->sh_link, sym->st_name);
1535 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
1539 struct elf_link_hash_entry *eh;
1540 bfd_boolean unresolved_reloc, warned, ignored;
1542 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1543 r_symndx, symtab_hdr, eh_syms,
1544 eh, sec, relocation,
1545 unresolved_reloc, warned, ignored);
1547 name = eh->root.root.string;
1548 hh = (struct elf_metag_link_hash_entry *) eh;
1551 if (sec != NULL && discarded_section (sec))
1552 METAG_RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1553 rel, relend, howto, contents);
1555 if (info->relocatable)
1560 case R_METAG_ADDR32:
1561 case R_METAG_RELBRANCH:
1562 if ((input_section->flags & SEC_ALLOC) == 0)
1566 && r_symndx != STN_UNDEF
1567 && (input_section->flags & SEC_ALLOC) != 0
1568 && (r_type != R_METAG_RELBRANCH
1569 || !SYMBOL_CALLS_LOCAL (info, &hh->eh)))
1572 && hh->eh.dynindx != -1
1573 && !hh->eh.non_got_ref
1574 && ((hh->eh.def_dynamic
1575 && !hh->eh.def_regular)
1576 || hh->eh.root.type == bfd_link_hash_undefweak
1577 || hh->eh.root.type == bfd_link_hash_undefined)))
1579 Elf_Internal_Rela outrel;
1580 bfd_boolean skip, relocate;
1583 /* When generating a shared object, these relocations
1584 are copied into the output file to be resolved at run
1587 sreloc = elf_section_data (input_section)->sreloc;
1588 BFD_ASSERT (sreloc != NULL);
1593 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1597 if (outrel.r_offset == (bfd_vma) -1)
1599 else if (outrel.r_offset == (bfd_vma) -2)
1600 skip = TRUE, relocate = TRUE;
1601 outrel.r_offset += (input_section->output_section->vma
1602 + input_section->output_offset);
1606 memset (&outrel, 0, sizeof outrel);
1607 outrel.r_info = ELF32_R_INFO (0, R_METAG_NONE);
1609 else if (r_type == R_METAG_RELBRANCH)
1611 BFD_ASSERT (hh != NULL && hh->eh.dynindx != -1);
1612 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1613 outrel.r_addend = rel->r_addend;
1617 /* h->dynindx may be -1 if this symbol was marked to
1620 || ((info->symbolic || hh->eh.dynindx == -1)
1621 && hh->eh.def_regular))
1624 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1625 outrel.r_addend = relocation + rel->r_addend;
1629 BFD_ASSERT (hh->eh.dynindx != -1);
1630 outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
1631 outrel.r_addend = rel->r_addend;
1635 loc = sreloc->contents;
1636 loc += sreloc->reloc_count * sizeof(Elf32_External_Rela);
1637 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
1638 ++sreloc->reloc_count;
1640 /* If this reloc is against an external symbol, we do
1641 not want to fiddle with the addend. Otherwise, we
1642 need to include the symbol value so that it becomes
1643 an addend for the dynamic reloc. */
1649 case R_METAG_RELBRANCH_PLT:
1650 /* Relocation is to the entry for this symbol in the
1651 procedure linkage table. */
1656 if (hh->eh.forced_local)
1659 if (hh->eh.plt.offset == (bfd_vma) -1 ||
1662 /* We didn't make a PLT entry for this symbol. This
1663 happens when statically linking PIC code, or when
1664 using -Bsymbolic. */
1668 relocation = (htab->splt->output_section->vma
1669 + htab->splt->output_offset
1670 + hh->eh.plt.offset);
1672 case R_METAG_HI16_GOTPC:
1673 case R_METAG_LO16_GOTPC:
1674 BFD_ASSERT (htab->sgot != NULL);
1676 relocation = (htab->sgot->output_section->vma +
1677 htab->sgot->output_offset);
1678 relocation += GOT_REG_OFFSET;
1679 relocation -= (input_section->output_section->vma
1680 + input_section->output_offset
1683 case R_METAG_HI16_GOTOFF:
1684 case R_METAG_LO16_GOTOFF:
1685 case R_METAG_GETSET_GOTOFF:
1686 BFD_ASSERT (htab->sgot != NULL);
1688 relocation -= (htab->sgot->output_section->vma +
1689 htab->sgot->output_offset);
1690 relocation -= GOT_REG_OFFSET;
1692 case R_METAG_GETSET_GOT:
1695 bfd_boolean do_got = 0;
1697 /* Relocation is to the entry for this symbol in the
1698 global offset table. */
1703 off = hh->eh.got.offset;
1704 dyn = htab->etab.dynamic_sections_created;
1705 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
1708 /* If we aren't going to call finish_dynamic_symbol,
1709 then we need to handle initialisation of the .got
1710 entry and create needed relocs here. Since the
1711 offset must always be a multiple of 4, we use the
1712 least significant bit to record whether we have
1713 initialised it already. */
1718 hh->eh.got.offset |= 1;
1725 /* Local symbol case. */
1726 if (local_got_offsets == NULL)
1729 off = local_got_offsets[r_symndx];
1731 /* The offset must always be a multiple of 4. We use
1732 the least significant bit to record whether we have
1733 already generated the necessary reloc. */
1738 local_got_offsets[r_symndx] |= 1;
1747 /* Output a dynamic relocation for this GOT entry.
1748 In this case it is relative to the base of the
1749 object because the symbol index is zero. */
1750 Elf_Internal_Rela outrel;
1752 asection *s = htab->srelgot;
1754 outrel.r_offset = (off
1755 + htab->sgot->output_offset
1756 + htab->sgot->output_section->vma);
1757 outrel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
1758 outrel.r_addend = relocation;
1760 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1761 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1764 bfd_put_32 (output_bfd, relocation,
1765 htab->sgot->contents + off);
1768 if (off >= (bfd_vma) -2)
1771 relocation = off - GOT_REG_OFFSET;
1774 case R_METAG_TLS_GD:
1775 case R_METAG_TLS_IE:
1777 /* XXXMJF There is room here for optimisations. For example
1778 converting from GD->IE, etc. */
1783 if (htab->sgot == NULL)
1790 dyn = htab->etab.dynamic_sections_created;
1792 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, &hh->eh)
1794 || !SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
1796 indx = hh->eh.dynindx;
1798 off = hh->eh.got.offset;
1799 tls_type = hh->tls_type;
1803 /* Local symbol case. */
1804 if (local_got_offsets == NULL)
1807 off = local_got_offsets[r_symndx];
1808 tls_type = metag_elf_local_got_tls_type (input_bfd) [r_symndx];
1811 if (tls_type == GOT_UNKNOWN)
1818 bfd_boolean need_relocs = FALSE;
1819 Elf_Internal_Rela outrel;
1820 bfd_byte *loc = NULL;
1823 /* The GOT entries have not been initialized yet. Do it
1824 now, and emit any relocations. If both an IE GOT and a
1825 GD GOT are necessary, we emit the GD first. */
1827 if ((info->shared || indx != 0)
1829 || ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT
1830 || hh->eh.root.type != bfd_link_hash_undefweak))
1833 loc = htab->srelgot->contents;
1834 /* FIXME (CAO): Should this be reloc_count++ ? */
1835 loc += htab->srelgot->reloc_count * sizeof (Elf32_External_Rela);
1838 if (tls_type & GOT_TLS_GD)
1842 outrel.r_offset = (cur_off
1843 + htab->sgot->output_section->vma
1844 + htab->sgot->output_offset);
1845 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_DTPMOD);
1846 outrel.r_addend = 0;
1847 bfd_put_32 (output_bfd, 0, htab->sgot->contents + cur_off);
1849 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1850 htab->srelgot->reloc_count++;
1851 loc += sizeof (Elf32_External_Rela);
1854 bfd_put_32 (output_bfd, 0,
1855 htab->sgot->contents + cur_off + 4);
1858 bfd_put_32 (output_bfd, 0,
1859 htab->sgot->contents + cur_off + 4);
1860 outrel.r_info = ELF32_R_INFO (indx,
1861 R_METAG_TLS_DTPOFF);
1862 outrel.r_offset += 4;
1863 bfd_elf32_swap_reloca_out (output_bfd,
1865 htab->srelgot->reloc_count++;
1866 loc += sizeof (Elf32_External_Rela);
1871 /* We don't support changing the TLS model. */
1878 if (tls_type & GOT_TLS_IE)
1882 outrel.r_offset = (cur_off
1883 + htab->sgot->output_section->vma
1884 + htab->sgot->output_offset);
1885 outrel.r_info = ELF32_R_INFO (indx, R_METAG_TLS_TPOFF);
1888 outrel.r_addend = relocation - dtpoff_base (info);
1890 outrel.r_addend = 0;
1892 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1893 htab->srelgot->reloc_count++;
1894 loc += sizeof (Elf32_External_Rela);
1897 bfd_put_32 (output_bfd, tpoff (info, relocation),
1898 htab->sgot->contents + cur_off);
1904 hh->eh.got.offset |= 1;
1906 local_got_offsets[r_symndx] |= 1;
1909 /* Add the base of the GOT to the relocation value. */
1910 relocation = off - GOT_REG_OFFSET;
1915 case R_METAG_TLS_IENONPIC_HI16:
1916 case R_METAG_TLS_IENONPIC_LO16:
1917 case R_METAG_TLS_LE_HI16:
1918 case R_METAG_TLS_LE_LO16:
1921 (*_bfd_error_handler)
1922 (_("%B(%A+0x%lx): R_METAG_TLS_LE/IENONPIC relocation not permitted in shared object"),
1923 input_bfd, input_section,
1924 (long) rel->r_offset, howto->name);
1928 relocation = tpoff (info, relocation);
1930 case R_METAG_TLS_LDO_HI16:
1931 case R_METAG_TLS_LDO_LO16:
1933 relocation = tpoff (info, relocation);
1935 relocation -= dtpoff_base (info);
1937 case R_METAG_TLS_LDM:
1941 if (htab->sgot == NULL)
1943 off = htab->tls_ldm_got.offset;
1948 Elf_Internal_Rela outrel;
1951 outrel.r_offset = (off
1952 + htab->sgot->output_section->vma
1953 + htab->sgot->output_offset);
1955 outrel.r_addend = 0;
1956 outrel.r_info = ELF32_R_INFO (0, R_METAG_TLS_DTPMOD);
1957 loc = htab->srelgot->contents;
1958 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1959 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1960 htab->tls_ldm_got.offset |= 1;
1963 relocation = off - GOT_REG_OFFSET;
1970 r = metag_final_link_relocate (howto, input_bfd, input_section,
1971 contents, rel, relocation, hh, htab,
1974 if (r != bfd_reloc_ok)
1976 const char * msg = (const char *) NULL;
1980 case bfd_reloc_overflow:
1981 r = info->callbacks->reloc_overflow
1982 (info, (hh ? &hh->eh.root : NULL), name, howto->name,
1983 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1986 case bfd_reloc_undefined:
1987 r = info->callbacks->undefined_symbol
1988 (info, name, input_bfd, input_section, rel->r_offset,
1992 case bfd_reloc_outofrange:
1993 msg = _("internal error: out of range error");
1996 case bfd_reloc_notsupported:
1997 msg = _("internal error: unsupported relocation error");
2000 case bfd_reloc_dangerous:
2001 msg = _("internal error: dangerous relocation");
2005 msg = _("internal error: unknown error");
2010 r = info->callbacks->warning
2011 (info, msg, name, input_bfd, input_section, rel->r_offset);
2021 /* Create the .plt and .got sections, and set up our hash table
2022 short-cuts to various dynamic sections. */
2025 elf_metag_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2027 struct elf_metag_link_hash_table *htab;
2028 struct elf_link_hash_entry *eh;
2029 struct bfd_link_hash_entry *bh;
2030 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2032 /* Don't try to create the .plt and .got twice. */
2033 htab = metag_link_hash_table (info);
2034 if (htab->splt != NULL)
2037 /* Call the generic code to do most of the work. */
2038 if (! _bfd_elf_create_dynamic_sections (abfd, info))
2041 htab->sgot = bfd_get_linker_section (abfd, ".got");
2045 htab->sgotplt = bfd_make_section_with_flags (abfd, ".got.plt",
2046 (SEC_ALLOC | SEC_LOAD |
2049 SEC_LINKER_CREATED));
2050 if (htab->sgotplt == NULL
2051 || !bfd_set_section_alignment (abfd, htab->sgotplt, 2))
2054 /* Define the symbol __GLOBAL_OFFSET_TABLE__ at the start of the .got
2055 section. We don't do this in the linker script because we don't want
2056 to define the symbol if we are not creating a global offset table. */
2058 if (!(_bfd_generic_link_add_one_symbol
2059 (info, abfd, "__GLOBAL_OFFSET_TABLE__", BSF_GLOBAL, htab->sgot,
2060 (bfd_vma) 0, NULL, FALSE, bed->collect, &bh)))
2062 eh = (struct elf_link_hash_entry *) bh;
2063 eh->def_regular = 1;
2064 eh->type = STT_OBJECT;
2065 eh->other = STV_HIDDEN;
2067 if (! info->executable
2068 && ! bfd_elf_link_record_dynamic_symbol (info, eh))
2071 elf_hash_table (info)->hgot = eh;
2073 htab->splt = bfd_get_linker_section (abfd, ".plt");
2074 htab->srelplt = bfd_get_linker_section (abfd, ".rela.plt");
2076 htab->srelgot = bfd_get_linker_section (abfd, ".rela.got");
2078 htab->sdynbss = bfd_get_linker_section (abfd, ".dynbss");
2079 htab->srelbss = bfd_get_linker_section (abfd, ".rela.bss");
2084 /* Look through the relocs for a section during the first phase, and
2085 calculate needed space in the global offset table, procedure linkage
2086 table, and dynamic reloc sections. At this point we haven't
2087 necessarily read all the input files. */
2090 elf_metag_check_relocs (bfd *abfd,
2091 struct bfd_link_info *info,
2093 const Elf_Internal_Rela *relocs)
2095 Elf_Internal_Shdr *symtab_hdr;
2096 struct elf_link_hash_entry **eh_syms;
2097 const Elf_Internal_Rela *rel;
2098 const Elf_Internal_Rela *rel_end;
2099 struct elf_metag_link_hash_table *htab;
2102 int tls_type = GOT_UNKNOWN, old_tls_type = GOT_UNKNOWN;
2104 if (info->relocatable)
2107 htab = metag_link_hash_table (info);
2108 dynobj = htab->etab.dynobj;
2109 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2110 eh_syms = elf_sym_hashes (abfd);
2116 rel_end = relocs + sec->reloc_count;
2117 for (rel = relocs; rel < rel_end; rel++)
2120 struct elf_metag_link_hash_entry *hh;
2121 Elf_Internal_Sym *isym;
2122 unsigned long r_symndx;
2124 r_symndx = ELF32_R_SYM (rel->r_info);
2125 r_type = ELF32_R_TYPE (rel->r_info);
2126 if (r_symndx < symtab_hdr->sh_info)
2128 /* A local symbol. */
2129 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2140 hh = (struct elf_metag_link_hash_entry *)
2141 eh_syms[r_symndx - symtab_hdr->sh_info];
2142 while (hh->eh.root.type == bfd_link_hash_indirect
2143 || hh->eh.root.type == bfd_link_hash_warning)
2144 hh = (struct elf_metag_link_hash_entry *) hh->eh.root.u.i.link;
2146 /* PR15323, ref flags aren't set for references in the same
2148 hh->eh.root.non_ir_ref = 1;
2151 /* Some relocs require a global offset table. */
2152 if (htab->sgot == NULL)
2156 case R_METAG_TLS_GD:
2157 case R_METAG_TLS_LDM:
2158 case R_METAG_TLS_IE:
2160 info->flags |= DF_STATIC_TLS;
2163 case R_METAG_HI16_GOTOFF:
2164 case R_METAG_LO16_GOTOFF:
2165 case R_METAG_GETSET_GOTOFF:
2166 case R_METAG_GETSET_GOT:
2167 case R_METAG_HI16_GOTPC:
2168 case R_METAG_LO16_GOTPC:
2170 htab->etab.dynobj = dynobj = abfd;
2171 if (!elf_metag_create_dynamic_sections (dynobj, info))
2182 case R_METAG_TLS_IE:
2183 case R_METAG_TLS_GD:
2184 case R_METAG_GETSET_GOT:
2188 tls_type = GOT_NORMAL;
2190 case R_METAG_TLS_IE:
2191 tls_type = GOT_TLS_IE;
2193 case R_METAG_TLS_GD:
2194 tls_type = GOT_TLS_GD;
2200 hh->eh.got.refcount += 1;
2201 old_tls_type = hh->tls_type;
2205 bfd_signed_vma *local_got_refcounts;
2207 /* This is a global offset table entry for a local
2209 local_got_refcounts = elf_local_got_refcounts (abfd);
2210 if (local_got_refcounts == NULL)
2214 size = symtab_hdr->sh_info;
2215 size *= sizeof (bfd_signed_vma);
2216 /* Add in space to store the local GOT TLS types. */
2217 size += symtab_hdr->sh_info;
2218 local_got_refcounts = ((bfd_signed_vma *)
2219 bfd_zalloc (abfd, size));
2220 if (local_got_refcounts == NULL)
2222 elf_local_got_refcounts (abfd) = local_got_refcounts;
2223 memset (metag_elf_local_got_tls_type (abfd),
2224 GOT_UNKNOWN, symtab_hdr->sh_info);
2226 local_got_refcounts[r_symndx] += 1;
2227 old_tls_type = metag_elf_local_got_tls_type (abfd) [r_symndx];
2230 if (old_tls_type != tls_type)
2234 hh->tls_type = tls_type;
2238 metag_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
2244 case R_METAG_TLS_LDM:
2245 metag_link_hash_table (info)->tls_ldm_got.refcount += 1;
2248 case R_METAG_RELBRANCH_PLT:
2249 /* This symbol requires a procedure linkage table entry. We
2250 actually build the entry in adjust_dynamic_symbol,
2251 because this might be a case of linking PIC code without
2252 linking in any dynamic objects, in which case we don't
2253 need to generate a procedure linkage table after all. */
2255 /* If this is a local symbol, we resolve it directly without
2256 creating a procedure linkage table entry. */
2260 if (hh->eh.forced_local)
2263 hh->eh.needs_plt = 1;
2264 hh->eh.plt.refcount += 1;
2267 case R_METAG_HIADDR16:
2268 case R_METAG_LOADDR16:
2269 /* Let's help debug shared library creation. These relocs
2270 cannot be used in shared libs. Don't error out for
2271 sections we don't care about, such as debug sections or
2272 non-constant sections. */
2274 && (sec->flags & SEC_ALLOC) != 0
2275 && (sec->flags & SEC_READONLY) != 0)
2280 name = hh->eh.root.root.string;
2282 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
2283 (*_bfd_error_handler)
2284 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
2285 abfd, elf_metag_howto_table[r_type].name, name);
2286 bfd_set_error (bfd_error_bad_value);
2291 case R_METAG_ADDR32:
2292 case R_METAG_RELBRANCH:
2293 case R_METAG_GETSETOFF:
2294 if (hh != NULL && !info->shared)
2296 hh->eh.non_got_ref = 1;
2297 hh->eh.plt.refcount += 1;
2300 /* If we are creating a shared library, and this is a reloc
2301 against a global symbol, or a non PC relative reloc
2302 against a local symbol, then we need to copy the reloc
2303 into the shared library. However, if we are linking with
2304 -Bsymbolic, we do not need to copy a reloc against a
2305 global symbol which is defined in an object we are
2306 including in the link (i.e., DEF_REGULAR is set). At
2307 this point we have not seen all the input files, so it is
2308 possible that DEF_REGULAR is not set now but will be set
2309 later (it is never cleared). We account for that
2310 possibility below by storing information in the
2311 dyn_relocs field of the hash table entry. A similar
2312 situation occurs when creating shared libraries and symbol
2313 visibility changes render the symbol local.
2315 If on the other hand, we are creating an executable, we
2316 may need to keep relocations for symbols satisfied by a
2317 dynamic library if we manage to avoid copy relocs for the
2320 && (sec->flags & SEC_ALLOC) != 0
2321 && (r_type != R_METAG_RELBRANCH
2323 && (! info->symbolic
2324 || hh->eh.root.type == bfd_link_hash_defweak
2325 || !hh->eh.def_regular))))
2327 && (sec->flags & SEC_ALLOC) != 0
2329 && (hh->eh.root.type == bfd_link_hash_defweak
2330 || !hh->eh.def_regular)))
2332 struct elf_metag_dyn_reloc_entry *hdh_p;
2333 struct elf_metag_dyn_reloc_entry **hdh_head;
2336 htab->etab.dynobj = dynobj = abfd;
2338 /* When creating a shared object, we must copy these
2339 relocs into the output file. We create a reloc
2340 section in dynobj and make room for the reloc. */
2343 sreloc = _bfd_elf_make_dynamic_reloc_section
2344 (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ TRUE);
2348 bfd_set_error (bfd_error_bad_value);
2352 elf_section_data (sec)->sreloc = sreloc;
2355 /* If this is a global symbol, we count the number of
2356 relocations we need for this symbol. */
2358 hdh_head = &((struct elf_metag_link_hash_entry *) hh)->dyn_relocs;
2361 /* Track dynamic relocs needed for local syms too. */
2365 sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
2369 vpp = &elf_section_data (sr)->local_dynrel;
2370 hdh_head = (struct elf_metag_dyn_reloc_entry **) vpp;
2374 if (hdh_p == NULL || hdh_p->sec != sec)
2376 hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2377 bfd_alloc (dynobj, sizeof *hdh_p));
2380 hdh_p->hdh_next = *hdh_head;
2384 hdh_p->relative_count = 0;
2388 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
2389 hdh_p->relative_count += 1;
2393 /* This relocation describes the C++ object vtable hierarchy.
2394 Reconstruct it for later use during GC. */
2395 case R_METAG_GNU_VTINHERIT:
2396 if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh,
2401 /* This relocation describes which C++ vtable entries are actually
2402 used. Record for later use during GC. */
2403 case R_METAG_GNU_VTENTRY:
2404 BFD_ASSERT (hh != NULL);
2406 && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rel->r_addend))
2415 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2418 elf_metag_copy_indirect_symbol (struct bfd_link_info *info,
2419 struct elf_link_hash_entry *eh_dir,
2420 struct elf_link_hash_entry *eh_ind)
2422 struct elf_metag_link_hash_entry *hh_dir, *hh_ind;
2424 hh_dir = metag_elf_hash_entry (eh_dir);
2425 hh_ind = metag_elf_hash_entry (eh_ind);
2427 if (hh_ind->dyn_relocs != NULL)
2429 if (hh_dir->dyn_relocs != NULL)
2431 struct elf_metag_dyn_reloc_entry **hdh_pp;
2432 struct elf_metag_dyn_reloc_entry *hdh_p;
2434 if (eh_ind->root.type == bfd_link_hash_indirect)
2437 /* Add reloc counts against the weak sym to the strong sym
2438 list. Merge any entries against the same section. */
2439 for (hdh_pp = &hh_ind->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2441 struct elf_metag_dyn_reloc_entry *hdh_q;
2443 for (hdh_q = hh_dir->dyn_relocs; hdh_q != NULL;
2444 hdh_q = hdh_q->hdh_next)
2445 if (hdh_q->sec == hdh_p->sec)
2447 hdh_q->relative_count += hdh_p->relative_count;
2448 hdh_q->count += hdh_p->count;
2449 *hdh_pp = hdh_p->hdh_next;
2453 hdh_pp = &hdh_p->hdh_next;
2455 *hdh_pp = hh_dir->dyn_relocs;
2458 hh_dir->dyn_relocs = hh_ind->dyn_relocs;
2459 hh_ind->dyn_relocs = NULL;
2462 if (eh_ind->root.type == bfd_link_hash_indirect
2463 && eh_dir->got.refcount <= 0)
2465 hh_dir->tls_type = hh_ind->tls_type;
2466 hh_ind->tls_type = GOT_UNKNOWN;
2469 _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
2472 /* Adjust a symbol defined by a dynamic object and referenced by a
2473 regular object. The current definition is in some section of the
2474 dynamic object, but we're not including those sections. We have to
2475 change the definition to something the rest of the link can
2479 elf_metag_adjust_dynamic_symbol (struct bfd_link_info *info,
2480 struct elf_link_hash_entry *eh)
2482 struct elf_metag_link_hash_table *htab;
2483 struct elf_metag_link_hash_entry *hh;
2484 struct elf_metag_dyn_reloc_entry *hdh_p;
2487 /* If this is a function, put it in the procedure linkage table. We
2488 will fill in the contents of the procedure linkage table later,
2489 when we know the address of the .got section. */
2490 if (eh->type == STT_FUNC
2493 if (eh->plt.refcount <= 0
2494 || SYMBOL_CALLS_LOCAL (info, eh)
2495 || (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT
2496 && eh->root.type == bfd_link_hash_undefweak))
2498 /* This case can occur if we saw a PLT reloc in an input
2499 file, but the symbol was never referred to by a dynamic
2500 object. In such a case, we don't actually need to build
2501 a procedure linkage table, and we can just do a PCREL
2503 eh->plt.offset = (bfd_vma) -1;
2510 eh->plt.offset = (bfd_vma) -1;
2512 /* If this is a weak symbol, and there is a real definition, the
2513 processor independent code will have arranged for us to see the
2514 real definition first, and we can just use the same value. */
2515 if (eh->u.weakdef != NULL)
2517 if (eh->u.weakdef->root.type != bfd_link_hash_defined
2518 && eh->u.weakdef->root.type != bfd_link_hash_defweak)
2520 eh->root.u.def.section = eh->u.weakdef->root.u.def.section;
2521 eh->root.u.def.value = eh->u.weakdef->root.u.def.value;
2522 eh->non_got_ref = eh->u.weakdef->non_got_ref;
2526 /* This is a reference to a symbol defined by a dynamic object which
2527 is not a function. */
2529 /* If we are creating a shared library, we must presume that the
2530 only references to the symbol are via the global offset table.
2531 For such cases we need not do anything here; the relocations will
2532 be handled correctly by relocate_section. */
2536 /* If there are no references to this symbol that do not use the
2537 GOT, we don't need to generate a copy reloc. */
2538 if (!eh->non_got_ref)
2541 /* If -z nocopyreloc was given, we won't generate them either. */
2542 if (info->nocopyreloc)
2544 eh->non_got_ref = 0;
2548 hh = (struct elf_metag_link_hash_entry *) eh;
2549 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2551 s = hdh_p->sec->output_section;
2552 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2556 /* If we didn't find any dynamic relocs in read-only sections, then
2557 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2560 eh->non_got_ref = 0;
2564 /* We must allocate the symbol in our .dynbss section, which will
2565 become part of the .bss section of the executable. There will be
2566 an entry for this symbol in the .dynsym section. The dynamic
2567 object will contain position independent code, so all references
2568 from the dynamic object to this symbol will go through the global
2569 offset table. The dynamic linker will use the .dynsym entry to
2570 determine the address it must put in the global offset table, so
2571 both the dynamic object and the regular object will refer to the
2572 same memory location for the variable. */
2574 htab = metag_link_hash_table (info);
2576 /* We must generate a COPY reloc to tell the dynamic linker to
2577 copy the initial value out of the dynamic object and into the
2578 runtime process image. */
2579 if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
2581 htab->srelbss->size += sizeof (Elf32_External_Rela);
2587 return _bfd_elf_adjust_dynamic_copy (eh, s);
2590 /* Allocate space in .plt, .got and associated reloc sections for
2594 allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2596 struct bfd_link_info *info;
2597 struct elf_metag_link_hash_table *htab;
2598 struct elf_metag_link_hash_entry *hh;
2599 struct elf_metag_dyn_reloc_entry *hdh_p;
2601 if (eh->root.type == bfd_link_hash_indirect)
2604 if (eh->root.type == bfd_link_hash_warning)
2605 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2608 htab = metag_link_hash_table (info);
2610 if (htab->etab.dynamic_sections_created
2611 && eh->plt.refcount > 0)
2613 /* Make sure this symbol is output as a dynamic symbol.
2614 Undefined weak syms won't yet be marked as dynamic. */
2615 if (eh->dynindx == -1
2616 && !eh->forced_local)
2618 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2622 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, eh))
2624 asection *s = htab->splt;
2626 /* If this is the first .plt entry, make room for the special
2629 s->size += PLT_ENTRY_SIZE;
2631 eh->plt.offset = s->size;
2633 /* If this symbol is not defined in a regular file, and we are
2634 not generating a shared library, then set the symbol to this
2635 location in the .plt. This is required to make function
2636 pointers compare as equal between the normal executable and
2637 the shared library. */
2639 && !eh->def_regular)
2641 eh->root.u.def.section = s;
2642 eh->root.u.def.value = eh->plt.offset;
2645 /* Make room for this entry. */
2646 s->size += PLT_ENTRY_SIZE;
2648 /* We also need to make an entry in the .got.plt section, which
2649 will be placed in the .got section by the linker script. */
2650 htab->sgotplt->size += 4;
2652 /* We also need to make an entry in the .rel.plt section. */
2653 htab->srelplt->size += sizeof (Elf32_External_Rela);
2657 eh->plt.offset = (bfd_vma) -1;
2663 eh->plt.offset = (bfd_vma) -1;
2667 if (eh->got.refcount > 0)
2671 int tls_type = metag_elf_hash_entry (eh)->tls_type;
2673 /* Make sure this symbol is output as a dynamic symbol.
2674 Undefined weak syms won't yet be marked as dynamic. */
2675 if (eh->dynindx == -1
2676 && !eh->forced_local)
2678 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2684 eh->got.offset = s->size;
2686 /* R_METAG_TLS_GD needs 2 consecutive GOT slots. */
2687 if (tls_type == GOT_TLS_GD)
2689 dyn = htab->etab.dynamic_sections_created;
2690 /* R_METAG_TLS_IE needs one dynamic relocation if dynamic,
2691 R_METAG_TLS_GD needs one if local symbol and two if global. */
2692 if ((tls_type == GOT_TLS_GD && eh->dynindx == -1)
2693 || (tls_type == GOT_TLS_IE && dyn))
2694 htab->srelgot->size += sizeof (Elf32_External_Rela);
2695 else if (tls_type == GOT_TLS_GD)
2696 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2697 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, eh))
2698 htab->srelgot->size += sizeof (Elf32_External_Rela);
2701 eh->got.offset = (bfd_vma) -1;
2703 hh = (struct elf_metag_link_hash_entry *) eh;
2704 if (hh->dyn_relocs == NULL)
2707 /* If this is a -Bsymbolic shared link, then we need to discard all
2708 space allocated for dynamic pc-relative relocs against symbols
2709 defined in a regular object. For the normal shared case, discard
2710 space for relocs that have become local due to symbol visibility
2714 if (SYMBOL_CALLS_LOCAL (info, eh))
2716 struct elf_metag_dyn_reloc_entry **hdh_pp;
2718 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
2720 hdh_p->count -= hdh_p->relative_count;
2721 hdh_p->relative_count = 0;
2722 if (hdh_p->count == 0)
2723 *hdh_pp = hdh_p->hdh_next;
2725 hdh_pp = &hdh_p->hdh_next;
2729 /* Also discard relocs on undefined weak syms with non-default
2731 if (hh->dyn_relocs != NULL
2732 && eh->root.type == bfd_link_hash_undefweak)
2734 if (ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
2735 hh->dyn_relocs = NULL;
2737 /* Make sure undefined weak symbols are output as a dynamic
2739 else if (eh->dynindx == -1
2740 && !eh->forced_local)
2742 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2749 /* For the non-shared case, discard space for relocs against
2750 symbols which turn out to need copy relocs or are not
2752 if (!eh->non_got_ref
2753 && ((eh->def_dynamic
2754 && !eh->def_regular)
2755 || (htab->etab.dynamic_sections_created
2756 && (eh->root.type == bfd_link_hash_undefweak
2757 || eh->root.type == bfd_link_hash_undefined))))
2759 /* Make sure this symbol is output as a dynamic symbol.
2760 Undefined weak syms won't yet be marked as dynamic. */
2761 if (eh->dynindx == -1
2762 && !eh->forced_local)
2764 if (! bfd_elf_link_record_dynamic_symbol (info, eh))
2768 /* If that succeeded, we know we'll be keeping all the
2770 if (eh->dynindx != -1)
2774 hh->dyn_relocs = NULL;
2780 /* Finally, allocate space. */
2781 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2783 asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
2784 sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
2790 /* Find any dynamic relocs that apply to read-only sections. */
2793 readonly_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
2795 struct elf_metag_link_hash_entry *hh;
2796 struct elf_metag_dyn_reloc_entry *hdh_p;
2798 if (eh->root.type == bfd_link_hash_warning)
2799 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
2801 hh = (struct elf_metag_link_hash_entry *) eh;
2802 for (hdh_p = hh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->hdh_next)
2804 asection *s = hdh_p->sec->output_section;
2806 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2808 struct bfd_link_info *info = inf;
2810 info->flags |= DF_TEXTREL;
2812 /* Not an error, just cut short the traversal. */
2819 /* Set the sizes of the dynamic sections. */
2822 elf_metag_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2823 struct bfd_link_info *info)
2825 struct elf_metag_link_hash_table *htab;
2831 htab = metag_link_hash_table (info);
2832 dynobj = htab->etab.dynobj;
2836 if (htab->etab.dynamic_sections_created)
2838 /* Set the contents of the .interp section to the interpreter. */
2839 if (info->executable)
2841 s = bfd_get_linker_section (dynobj, ".interp");
2844 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2845 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2849 /* Set up .got offsets for local syms, and space for local dynamic
2851 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2853 bfd_signed_vma *local_got;
2854 bfd_signed_vma *end_local_got;
2855 bfd_size_type locsymcount;
2856 Elf_Internal_Shdr *symtab_hdr;
2858 char *local_tls_type;
2860 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2863 for (s = ibfd->sections; s != NULL; s = s->next)
2865 struct elf_metag_dyn_reloc_entry *hdh_p;
2867 for (hdh_p = ((struct elf_metag_dyn_reloc_entry *)
2868 elf_section_data (s)->local_dynrel);
2870 hdh_p = hdh_p->hdh_next)
2872 if (!bfd_is_abs_section (hdh_p->sec)
2873 && bfd_is_abs_section (hdh_p->sec->output_section))
2875 /* Input section has been discarded, either because
2876 it is a copy of a linkonce section or due to
2877 linker script /DISCARD/, so we'll be discarding
2880 else if (hdh_p->count != 0)
2882 srel = elf_section_data (hdh_p->sec)->sreloc;
2883 srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
2884 if ((hdh_p->sec->output_section->flags & SEC_READONLY) != 0)
2885 info->flags |= DF_TEXTREL;
2890 local_got = elf_local_got_refcounts (ibfd);
2894 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2895 locsymcount = symtab_hdr->sh_info;
2896 end_local_got = local_got + locsymcount;
2897 local_tls_type = metag_elf_local_got_tls_type (ibfd);
2899 srel = htab->srelgot;
2900 for (; local_got < end_local_got; ++local_got)
2904 *local_got = s->size;
2905 s->size += GOT_ENTRY_SIZE;
2906 /* R_METAG_TLS_GD relocs need 2 consecutive GOT entries. */
2907 if (*local_tls_type == GOT_TLS_GD)
2910 srel->size += sizeof (Elf32_External_Rela);
2913 *local_got = (bfd_vma) -1;
2918 if (htab->tls_ldm_got.refcount > 0)
2920 /* Allocate 2 got entries and 1 dynamic reloc for R_METAG_TLS_LDM
2922 htab->tls_ldm_got.offset = htab->sgot->size;
2923 htab->sgot->size += 8;
2924 htab->srelgot->size += sizeof (Elf32_External_Rela);
2927 htab->tls_ldm_got.offset = -1;
2929 /* Allocate global sym .plt and .got entries, and space for global
2930 sym dynamic relocs. */
2931 elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
2933 /* We now have determined the sizes of the various dynamic sections.
2934 Allocate memory for them. */
2936 for (s = dynobj->sections; s != NULL; s = s->next)
2938 bfd_boolean reloc_section = FALSE;
2940 if ((s->flags & SEC_LINKER_CREATED) == 0)
2945 || s == htab->sgotplt
2946 || s == htab->sdynbss)
2948 /* Strip this section if we don't need it; see the
2951 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2953 if (s->size != 0 && s != htab->srelplt)
2956 /* We use the reloc_count field as a counter if we need
2957 to copy relocs into the output file. */
2959 reloc_section = TRUE;
2963 /* It's not one of our sections, so don't allocate space. */
2969 /* If we don't need this section, strip it from the
2970 output file. This is mostly to handle .rela.bss and
2971 .rela.plt. We must create both sections in
2972 create_dynamic_sections, because they must be created
2973 before the linker maps input sections to output
2974 sections. The linker does that before
2975 adjust_dynamic_symbol is called, and it is that
2976 function which decides whether anything needs to go
2977 into these sections. */
2978 s->flags |= SEC_EXCLUDE;
2982 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2985 /* Allocate memory for the section contents. */
2986 s->contents = bfd_zalloc (dynobj, s->size);
2987 if (s->contents == NULL)
2989 else if (reloc_section)
2991 unsigned char *contents = s->contents;
2992 Elf32_External_Rela reloc;
2994 /* Fill the reloc section with a R_METAG_NONE type reloc. */
2995 memset(&reloc, 0, sizeof(Elf32_External_Rela));
2996 reloc.r_info[0] = R_METAG_NONE;
2997 for (; contents < (s->contents + s->size);
2998 contents += sizeof(Elf32_External_Rela))
3000 memcpy(contents, &reloc, sizeof(Elf32_External_Rela));
3005 if (htab->etab.dynamic_sections_created)
3007 /* Add some entries to the .dynamic section. We fill in the
3008 values later, in elf_metag_finish_dynamic_sections, but we
3009 must add the entries now so that we get the correct size for
3010 the .dynamic section. The DT_DEBUG entry is filled in by the
3011 dynamic linker and used by the debugger. */
3012 #define add_dynamic_entry(TAG, VAL) \
3013 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3015 if (!add_dynamic_entry (DT_PLTGOT, 0))
3018 if (info->executable)
3020 if (!add_dynamic_entry (DT_DEBUG, 0))
3024 if (htab->srelplt->size != 0)
3026 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3027 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3028 || !add_dynamic_entry (DT_JMPREL, 0))
3034 if (!add_dynamic_entry (DT_RELA, 0)
3035 || !add_dynamic_entry (DT_RELASZ, 0)
3036 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3039 /* If any dynamic relocs apply to a read-only section,
3040 then we need a DT_TEXTREL entry. */
3041 if ((info->flags & DF_TEXTREL) == 0)
3042 elf_link_hash_traverse (&htab->etab, readonly_dynrelocs, info);
3044 if ((info->flags & DF_TEXTREL) != 0)
3046 if (!add_dynamic_entry (DT_TEXTREL, 0))
3051 #undef add_dynamic_entry
3056 /* Finish up dynamic symbol handling. We set the contents of various
3057 dynamic sections here. */
3060 elf_metag_finish_dynamic_symbol (bfd *output_bfd,
3061 struct bfd_link_info *info,
3062 struct elf_link_hash_entry *eh,
3063 Elf_Internal_Sym *sym)
3065 struct elf_metag_link_hash_table *htab;
3066 Elf_Internal_Rela rel;
3069 htab = metag_link_hash_table (info);
3071 if (eh->plt.offset != (bfd_vma) -1)
3081 if (eh->plt.offset & 1)
3084 BFD_ASSERT (eh->dynindx != -1);
3087 sgot = htab->sgotplt;
3088 srela = htab->srelplt;
3089 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3091 /* Get the index in the procedure linkage table which
3092 corresponds to this symbol. This is the index of this symbol
3093 in all the symbols for which we are making plt entries. The
3094 first entry in the procedure linkage table is reserved. */
3095 plt_index = eh->plt.offset / PLT_ENTRY_SIZE - 1;
3097 /* Get the offset into the .got.plt table of the entry that
3098 corresponds to this function. */
3099 got_offset = plt_index * GOT_ENTRY_SIZE;
3101 BFD_ASSERT (got_offset < (1 << 16));
3103 got_entry = sgot->output_section->vma
3104 + sgot->output_offset
3107 BFD_ASSERT (plt_index < (1 << 16));
3109 /* Fill in the entry in the procedure linkage table. */
3112 bfd_put_32 (output_bfd,
3114 | (((got_entry >> 16) & 0xffff) << 3)),
3115 splt->contents + eh->plt.offset);
3116 bfd_put_32 (output_bfd,
3118 | ((got_entry & 0xffff) << 3)),
3119 splt->contents + eh->plt.offset + 4);
3120 bfd_put_32 (output_bfd, plt_entry[2],
3121 splt->contents + eh->plt.offset + 8);
3122 bfd_put_32 (output_bfd,
3123 (plt_entry[3] | (plt_index << 3)),
3124 splt->contents + eh->plt.offset + 12);
3125 bfd_put_32 (output_bfd,
3127 | ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3128 splt->contents + eh->plt.offset + 16);
3132 bfd_vma addr = got_entry - (splt->output_section->vma +
3133 splt->output_offset + eh->plt.offset);
3135 bfd_put_32 (output_bfd,
3136 plt_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3137 splt->contents + eh->plt.offset);
3138 bfd_put_32 (output_bfd,
3139 plt_pic_entry[1] | ((addr & 0xffff) << 3),
3140 splt->contents + eh->plt.offset + 4);
3141 bfd_put_32 (output_bfd, plt_pic_entry[2],
3142 splt->contents + eh->plt.offset + 8);
3143 bfd_put_32 (output_bfd,
3144 (plt_pic_entry[3] | (plt_index << 3)),
3145 splt->contents + eh->plt.offset + 12);
3146 bfd_put_32 (output_bfd,
3148 + ((((unsigned int) ((- (eh->plt.offset + 16)) >> 2)) & 0x7ffff) << 5)),
3149 splt->contents + eh->plt.offset + 16);
3152 /* Fill in the entry in the global offset table. */
3153 bfd_put_32 (output_bfd,
3154 (splt->output_section->vma
3155 + splt->output_offset
3157 + 12), /* offset within PLT entry */
3158 sgot->contents + got_offset);
3160 /* Fill in the entry in the .rela.plt section. */
3161 rel.r_offset = (sgot->output_section->vma
3162 + sgot->output_offset
3164 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_JMP_SLOT);
3166 loc = htab->srelplt->contents;
3167 loc += plt_index * sizeof(Elf32_External_Rela);
3168 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3170 if (!eh->def_regular)
3172 /* Mark the symbol as undefined, rather than as defined in
3173 the .plt section. Leave the value alone. */
3174 sym->st_shndx = SHN_UNDEF;
3178 if (eh->got.offset != (bfd_vma) -1
3179 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_GD) == 0
3180 && (metag_elf_hash_entry (eh)->tls_type & GOT_TLS_IE) == 0)
3182 /* This symbol has an entry in the global offset table. Set it
3185 rel.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
3186 + htab->sgot->output_offset
3187 + htab->sgot->output_section->vma);
3189 /* If this is a -Bsymbolic link and the symbol is defined
3190 locally or was forced to be local because of a version file,
3191 we just want to emit a RELATIVE reloc. The entry in the
3192 global offset table will already have been initialized in the
3193 relocate_section function. */
3195 && (info->symbolic || eh->dynindx == -1)
3198 rel.r_info = ELF32_R_INFO (0, R_METAG_RELATIVE);
3199 rel.r_addend = (eh->root.u.def.value
3200 + eh->root.u.def.section->output_offset
3201 + eh->root.u.def.section->output_section->vma);
3205 if ((eh->got.offset & 1) != 0)
3207 bfd_put_32 (output_bfd, 0, htab->sgot->contents + eh->got.offset);
3208 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_GLOB_DAT);
3212 loc = htab->srelgot->contents;
3213 loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
3214 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3221 /* This symbol needs a copy reloc. Set it up. */
3223 if (! (eh->dynindx != -1
3224 && (eh->root.type == bfd_link_hash_defined
3225 || eh->root.type == bfd_link_hash_defweak)))
3230 rel.r_offset = (eh->root.u.def.value
3231 + eh->root.u.def.section->output_offset
3232 + eh->root.u.def.section->output_section->vma);
3234 rel.r_info = ELF32_R_INFO (eh->dynindx, R_METAG_COPY);
3235 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
3236 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
3239 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3240 if (eh->root.root.string[0] == '_'
3241 && (strcmp (eh->root.root.string, "_DYNAMIC") == 0
3242 || eh == htab->etab.hgot))
3244 sym->st_shndx = SHN_ABS;
3250 /* Set the Meta ELF ABI version. */
3253 elf_metag_post_process_headers (bfd * abfd, struct bfd_link_info * link_info)
3255 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
3257 _bfd_elf_post_process_headers (abfd, link_info);
3258 i_ehdrp = elf_elfheader (abfd);
3259 i_ehdrp->e_ident[EI_ABIVERSION] = METAG_ELF_ABI_VERSION;
3262 /* Used to decide how to sort relocs in an optimal manner for the
3263 dynamic linker, before writing them out. */
3265 static enum elf_reloc_type_class
3266 elf_metag_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
3267 const asection *rel_sec ATTRIBUTE_UNUSED,
3268 const Elf_Internal_Rela *rela)
3270 switch ((int) ELF32_R_TYPE (rela->r_info))
3272 case R_METAG_RELATIVE:
3273 return reloc_class_relative;
3274 case R_METAG_JMP_SLOT:
3275 return reloc_class_plt;
3277 return reloc_class_copy;
3279 return reloc_class_normal;
3283 /* Finish up the dynamic sections. */
3286 elf_metag_finish_dynamic_sections (bfd *output_bfd,
3287 struct bfd_link_info *info)
3290 struct elf_metag_link_hash_table *htab;
3293 htab = metag_link_hash_table (info);
3294 dynobj = htab->etab.dynobj;
3296 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
3298 if (htab->etab.dynamic_sections_created)
3301 Elf32_External_Dyn *dyncon, *dynconend;
3306 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3307 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3308 for (; dyncon < dynconend; dyncon++)
3310 Elf_Internal_Dyn dyn;
3313 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3321 s = htab->sgot->output_section;
3322 BFD_ASSERT (s != NULL);
3323 dyn.d_un.d_ptr = s->vma + htab->sgot->output_offset;
3324 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3328 s = htab->srelplt->output_section;
3329 BFD_ASSERT (s != NULL);
3330 dyn.d_un.d_ptr = s->vma;
3331 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3336 dyn.d_un.d_val = s->size;
3337 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3341 /* Don't count procedure linkage table relocs in the
3342 overall reloc count. */
3343 if (htab->srelplt) {
3345 dyn.d_un.d_val -= s->size;
3347 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3351 /* We may not be using the standard ELF linker script.
3352 If .rela.plt is the first .rela section, we adjust
3353 DT_RELA to not include it. */
3354 if (htab->srelplt) {
3356 if (dyn.d_un.d_ptr == s->output_section->vma + s->output_offset)
3357 dyn.d_un.d_ptr += s->size;
3359 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3365 /* Fill in the first entry in the procedure linkage table. */
3367 if (splt && splt->size > 0)
3370 /* addr = .got + 4 */
3371 addr = htab->sgot->output_section->vma +
3372 htab->sgot->output_offset + 4;
3375 addr -= splt->output_section->vma + splt->output_offset;
3376 bfd_put_32 (output_bfd,
3377 plt0_pic_entry[0] | (((addr >> 16) & 0xffff) << 3),
3379 bfd_put_32 (output_bfd,
3380 plt0_pic_entry[1] | ((addr & 0xffff) << 3),
3381 splt->contents + 4);
3382 bfd_put_32 (output_bfd, plt0_pic_entry[2], splt->contents + 8);
3383 bfd_put_32 (output_bfd, plt0_pic_entry[3], splt->contents + 12);
3384 bfd_put_32 (output_bfd, plt0_pic_entry[4], splt->contents + 16);
3388 bfd_put_32 (output_bfd,
3389 plt0_entry[0] | (((addr >> 16) & 0xffff) << 3),
3391 bfd_put_32 (output_bfd,
3392 plt0_entry[1] | ((addr & 0xffff) << 3),
3393 splt->contents + 4);
3394 bfd_put_32 (output_bfd, plt0_entry[2], splt->contents + 8);
3395 bfd_put_32 (output_bfd, plt0_entry[3], splt->contents + 12);
3396 bfd_put_32 (output_bfd, plt0_entry[4], splt->contents + 16);
3399 elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3404 if (htab->sgot != NULL && htab->sgot->size != 0)
3406 /* Fill in the first entry in the global offset table.
3407 We use it to point to our dynamic section, if we have one. */
3408 bfd_put_32 (output_bfd,
3409 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
3410 htab->sgot->contents);
3412 /* The second entry is reserved for use by the dynamic linker. */
3413 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
3415 /* Set .got entry size. */
3416 elf_section_data (htab->sgot->output_section)
3417 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
3423 /* Return the section that should be marked against GC for a given
3427 elf_metag_gc_mark_hook (asection *sec,
3428 struct bfd_link_info *info,
3429 Elf_Internal_Rela *rela,
3430 struct elf_link_hash_entry *hh,
3431 Elf_Internal_Sym *sym)
3434 switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
3436 case R_METAG_GNU_VTINHERIT:
3437 case R_METAG_GNU_VTENTRY:
3441 return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
3444 /* Update the got and plt entry reference counts for the section being
3448 elf_metag_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3449 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3450 asection *sec ATTRIBUTE_UNUSED,
3451 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3453 Elf_Internal_Shdr *symtab_hdr;
3454 struct elf_link_hash_entry **eh_syms;
3455 bfd_signed_vma *local_got_refcounts;
3456 bfd_signed_vma *local_plt_refcounts;
3457 const Elf_Internal_Rela *rel, *relend;
3459 if (info->relocatable)
3462 elf_section_data (sec)->local_dynrel = NULL;
3464 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3465 eh_syms = elf_sym_hashes (abfd);
3466 local_got_refcounts = elf_local_got_refcounts (abfd);
3467 local_plt_refcounts = local_got_refcounts;
3468 if (local_plt_refcounts != NULL)
3469 local_plt_refcounts += symtab_hdr->sh_info;
3471 relend = relocs + sec->reloc_count;
3472 for (rel = relocs; rel < relend; rel++)
3474 unsigned long r_symndx;
3475 unsigned int r_type;
3476 struct elf_link_hash_entry *eh = NULL;
3478 r_symndx = ELF32_R_SYM (rel->r_info);
3479 if (r_symndx >= symtab_hdr->sh_info)
3481 struct elf_metag_link_hash_entry *hh;
3482 struct elf_metag_dyn_reloc_entry **hdh_pp;
3483 struct elf_metag_dyn_reloc_entry *hdh_p;
3485 eh = eh_syms[r_symndx - symtab_hdr->sh_info];
3486 while (eh->root.type == bfd_link_hash_indirect
3487 || eh->root.type == bfd_link_hash_warning)
3488 eh = (struct elf_link_hash_entry *) eh->root.u.i.link;
3489 hh = (struct elf_metag_link_hash_entry *) eh;
3491 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3492 hdh_pp = &hdh_p->hdh_next)
3493 if (hdh_p->sec == sec)
3495 /* Everything must go for SEC. */
3496 *hdh_pp = hdh_p->hdh_next;
3501 r_type = ELF32_R_TYPE (rel->r_info);
3504 case R_METAG_TLS_LDM:
3505 if (metag_link_hash_table (info)->tls_ldm_got.refcount > 0)
3506 metag_link_hash_table (info)->tls_ldm_got.refcount -= 1;
3508 case R_METAG_TLS_IE:
3509 case R_METAG_TLS_GD:
3510 case R_METAG_GETSET_GOT:
3513 if (eh->got.refcount > 0)
3514 eh->got.refcount -= 1;
3516 else if (local_got_refcounts != NULL)
3518 if (local_got_refcounts[r_symndx] > 0)
3519 local_got_refcounts[r_symndx] -= 1;
3523 case R_METAG_RELBRANCH_PLT:
3526 if (eh->plt.refcount > 0)
3527 eh->plt.refcount -= 1;
3531 case R_METAG_ADDR32:
3532 case R_METAG_HIADDR16:
3533 case R_METAG_LOADDR16:
3534 case R_METAG_GETSETOFF:
3535 case R_METAG_RELBRANCH:
3538 struct elf_metag_link_hash_entry *hh;
3539 struct elf_metag_dyn_reloc_entry **hdh_pp;
3540 struct elf_metag_dyn_reloc_entry *hdh_p;
3542 if (!info->shared && eh->plt.refcount > 0)
3543 eh->plt.refcount -= 1;
3545 hh = (struct elf_metag_link_hash_entry *) eh;
3547 for (hdh_pp = &hh->dyn_relocs; (hdh_p = *hdh_pp) != NULL;
3548 hdh_pp = &hdh_p->hdh_next)
3549 if (hdh_p->sec == sec)
3551 if (ELF32_R_TYPE (rel->r_info) == R_METAG_RELBRANCH)
3552 hdh_p->relative_count -= 1;
3554 if (hdh_p->count == 0)
3555 *hdh_pp = hdh_p->hdh_next;
3569 /* Determine the type of stub needed, if any, for a call. */
3571 static enum elf_metag_stub_type
3572 metag_type_of_stub (asection *input_sec,
3573 const Elf_Internal_Rela *rel,
3574 struct elf_metag_link_hash_entry *hh,
3575 bfd_vma destination,
3576 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3579 bfd_vma branch_offset;
3580 bfd_vma max_branch_offset;
3583 !(hh->eh.root.type == bfd_link_hash_defined
3584 || hh->eh.root.type == bfd_link_hash_defweak))
3585 return metag_stub_none;
3587 /* Determine where the call point is. */
3588 location = (input_sec->output_offset
3589 + input_sec->output_section->vma
3592 branch_offset = destination - location;
3594 /* Determine if a long branch stub is needed. Meta branch offsets
3595 are signed 19 bits 4 byte aligned. */
3596 max_branch_offset = (1 << (BRANCH_BITS-1)) << 2;
3598 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
3601 return metag_stub_long_branch_shared;
3603 return metag_stub_long_branch;
3606 return metag_stub_none;
3609 #define MOVT_A0_3 0x82180005
3610 #define JUMP_A0_3 0xac180003
3612 #define MOVT_A1LBP 0x83080005
3613 #define ADD_A1LBP 0x83080000
3615 #define ADDT_A0_3_CPC 0x82980001
3616 #define ADD_A0_3_A0_3 0x82180000
3617 #define MOV_PC_A0_3 0xa3180ca0
3620 metag_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3622 struct elf_metag_stub_hash_entry *hsh;
3629 /* Massage our args to the form they really have. */
3630 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3632 stub_sec = hsh->stub_sec;
3634 /* Make a note of the offset within the stubs for this entry. */
3635 hsh->stub_offset = stub_sec->size;
3636 loc = stub_sec->contents + hsh->stub_offset;
3638 stub_bfd = stub_sec->owner;
3640 switch (hsh->stub_type)
3642 case metag_stub_long_branch_shared:
3643 /* A PIC long branch stub is an ADDT and an ADD instruction used to
3644 calculate the jump target using A0.3 as a temporary. Then a MOV
3645 to PC carries out the jump. */
3646 sym_value = (hsh->target_value
3647 + hsh->target_section->output_offset
3648 + hsh->target_section->output_section->vma
3651 sym_value -= (hsh->stub_offset
3652 + stub_sec->output_offset
3653 + stub_sec->output_section->vma);
3655 bfd_put_32 (stub_bfd, ADDT_A0_3_CPC | (((sym_value >> 16) & 0xffff) << 3),
3658 bfd_put_32 (stub_bfd, ADD_A0_3_A0_3 | ((sym_value & 0xffff) << 3),
3661 bfd_put_32 (stub_bfd, MOV_PC_A0_3, loc + 8);
3665 case metag_stub_long_branch:
3666 /* A standard long branch stub is a MOVT instruction followed by a
3667 JUMP instruction using the A0.3 register as a temporary. This is
3668 the same method used by the LDLK linker (patch.c). */
3669 sym_value = (hsh->target_value
3670 + hsh->target_section->output_offset
3671 + hsh->target_section->output_section->vma
3674 bfd_put_32 (stub_bfd, MOVT_A0_3 | (((sym_value >> 16) & 0xffff) << 3),
3677 bfd_put_32 (stub_bfd, JUMP_A0_3 | ((sym_value & 0xffff) << 3), loc + 4);
3686 stub_sec->size += size;
3690 /* As above, but don't actually build the stub. Just bump offset so
3691 we know stub section sizes. */
3694 metag_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg ATTRIBUTE_UNUSED)
3696 struct elf_metag_stub_hash_entry *hsh;
3699 /* Massage our args to the form they really have. */
3700 hsh = (struct elf_metag_stub_hash_entry *) gen_entry;
3702 if (hsh->stub_type == metag_stub_long_branch)
3704 else if (hsh->stub_type == metag_stub_long_branch_shared)
3707 hsh->stub_sec->size += size;
3711 /* Set up various things so that we can make a list of input sections
3712 for each output section included in the link. Returns -1 on error,
3713 0 when no stubs will be needed, and 1 on success. */
3716 elf_metag_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
3719 unsigned int bfd_count;
3720 int top_id, top_index;
3722 asection **input_list, **list;
3724 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3726 /* Count the number of input BFDs and find the top input section id. */
3727 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3729 input_bfd = input_bfd->link.next)
3732 for (section = input_bfd->sections;
3734 section = section->next)
3736 if (top_id < section->id)
3737 top_id = section->id;
3741 htab->bfd_count = bfd_count;
3743 amt = sizeof (struct map_stub) * (top_id + 1);
3744 htab->stub_group = bfd_zmalloc (amt);
3745 if (htab->stub_group == NULL)
3748 /* We can't use output_bfd->section_count here to find the top output
3749 section index as some sections may have been removed, and
3750 strip_excluded_output_sections doesn't renumber the indices. */
3751 for (section = output_bfd->sections, top_index = 0;
3753 section = section->next)
3755 if (top_index < section->index)
3756 top_index = section->index;
3759 htab->top_index = top_index;
3760 amt = sizeof (asection *) * (top_index + 1);
3761 input_list = bfd_malloc (amt);
3762 htab->input_list = input_list;
3763 if (input_list == NULL)
3766 /* For sections we aren't interested in, mark their entries with a
3767 value we can check later. */
3768 list = input_list + top_index;
3770 *list = bfd_abs_section_ptr;
3771 while (list-- != input_list);
3773 for (section = output_bfd->sections;
3775 section = section->next)
3777 /* FIXME: This is a bit of hack. Currently our .ctors and .dtors
3778 * have PC relative relocs in them but no code flag set. */
3779 if (((section->flags & SEC_CODE) != 0) ||
3780 strcmp(".ctors", section->name) ||
3781 strcmp(".dtors", section->name))
3782 input_list[section->index] = NULL;
3788 /* The linker repeatedly calls this function for each input section,
3789 in the order that input sections are linked into output sections.
3790 Build lists of input sections to determine groupings between which
3791 we may insert linker stubs. */
3794 elf_metag_next_input_section (struct bfd_link_info *info, asection *isec)
3796 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3798 if (isec->output_section->index <= htab->top_index)
3800 asection **list = htab->input_list + isec->output_section->index;
3801 if (*list != bfd_abs_section_ptr)
3803 /* Steal the link_sec pointer for our list. */
3804 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3805 /* This happens to make the list in reverse order,
3806 which is what we want. */
3807 PREV_SEC (isec) = *list;
3813 /* See whether we can group stub sections together. Grouping stub
3814 sections may result in fewer stubs. More importantly, we need to
3815 put all .init* and .fini* stubs at the beginning of the .init or
3816 .fini output sections respectively, because glibc splits the
3817 _init and _fini functions into multiple parts. Putting a stub in
3818 the middle of a function is not a good idea. */
3821 group_sections (struct elf_metag_link_hash_table *htab,
3822 bfd_size_type stub_group_size,
3823 bfd_boolean stubs_always_before_branch)
3825 asection **list = htab->input_list + htab->top_index;
3828 asection *tail = *list;
3829 if (tail == bfd_abs_section_ptr)
3831 while (tail != NULL)
3835 bfd_size_type total;
3836 bfd_boolean big_sec;
3840 big_sec = total >= stub_group_size;
3842 while ((prev = PREV_SEC (curr)) != NULL
3843 && ((total += curr->output_offset - prev->output_offset)
3847 /* OK, the size from the start of CURR to the end is less
3848 than stub_group_size bytes and thus can be handled by one stub
3849 section. (or the tail section is itself larger than
3850 stub_group_size bytes, in which case we may be toast.)
3851 We should really be keeping track of the total size of
3852 stubs added here, as stubs contribute to the final output
3856 prev = PREV_SEC (tail);
3857 /* Set up this stub group. */
3858 htab->stub_group[tail->id].link_sec = curr;
3860 while (tail != curr && (tail = prev) != NULL);
3862 /* But wait, there's more! Input sections up to stub_group_size
3863 bytes before the stub section can be handled by it too.
3864 Don't do this if we have a really large section after the
3865 stubs, as adding more stubs increases the chance that
3866 branches may not reach into the stub section. */
3867 if (!stubs_always_before_branch && !big_sec)
3871 && ((total += tail->output_offset - prev->output_offset)
3875 prev = PREV_SEC (tail);
3876 htab->stub_group[tail->id].link_sec = curr;
3882 while (list-- != htab->input_list);
3883 free (htab->input_list);
3887 /* Read in all local syms for all input bfds.
3888 Returns -1 on error, 0 otherwise. */
3891 get_local_syms (bfd *output_bfd ATTRIBUTE_UNUSED, bfd *input_bfd,
3892 struct bfd_link_info *info)
3894 unsigned int bfd_indx;
3895 Elf_Internal_Sym *local_syms, **all_local_syms;
3896 int stub_changed = 0;
3897 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3899 /* We want to read in symbol extension records only once. To do this
3900 we need to read in the local symbols in parallel and save them for
3901 later use; so hold pointers to the local symbols in an array. */
3902 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
3903 all_local_syms = bfd_zmalloc (amt);
3904 htab->all_local_syms = all_local_syms;
3905 if (all_local_syms == NULL)
3908 /* Walk over all the input BFDs, swapping in local symbols. */
3911 input_bfd = input_bfd->link.next, bfd_indx++)
3913 Elf_Internal_Shdr *symtab_hdr;
3915 /* We'll need the symbol table in a second. */
3916 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3917 if (symtab_hdr->sh_info == 0)
3920 /* We need an array of the local symbols attached to the input bfd. */
3921 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3922 if (local_syms == NULL)
3924 local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3925 symtab_hdr->sh_info, 0,
3927 /* Cache them for elf_link_input_bfd. */
3928 symtab_hdr->contents = (unsigned char *) local_syms;
3930 if (local_syms == NULL)
3933 all_local_syms[bfd_indx] = local_syms;
3936 return stub_changed;
3939 /* Determine and set the size of the stub section for a final link.
3941 The basic idea here is to examine all the relocations looking for
3942 PC-relative calls to a target that is unreachable with a "CALLR"
3945 /* See elf32-hppa.c and elf64-ppc.c. */
3948 elf_metag_size_stubs(bfd *output_bfd, bfd *stub_bfd,
3949 struct bfd_link_info *info,
3950 bfd_signed_vma group_size,
3951 asection * (*add_stub_section) (const char *, asection *),
3952 void (*layout_sections_again) (void))
3954 bfd_size_type stub_group_size;
3955 bfd_boolean stubs_always_before_branch;
3956 bfd_boolean stub_changed;
3957 struct elf_metag_link_hash_table *htab = metag_link_hash_table (info);
3959 /* Stash our params away. */
3960 htab->stub_bfd = stub_bfd;
3961 htab->add_stub_section = add_stub_section;
3962 htab->layout_sections_again = layout_sections_again;
3963 stubs_always_before_branch = group_size < 0;
3965 stub_group_size = -group_size;
3967 stub_group_size = group_size;
3968 if (stub_group_size == 1)
3970 /* Default values. */
3971 /* FIXME: not sure what these values should be */
3972 if (stubs_always_before_branch)
3974 stub_group_size = (1 << BRANCH_BITS);
3978 stub_group_size = (1 << BRANCH_BITS);
3982 group_sections (htab, stub_group_size, stubs_always_before_branch);
3984 switch (get_local_syms (output_bfd, info->input_bfds, info))
3987 if (htab->all_local_syms)
3988 goto error_ret_free_local;
3992 stub_changed = FALSE;
3996 stub_changed = TRUE;
4003 unsigned int bfd_indx;
4006 for (input_bfd = info->input_bfds, bfd_indx = 0;
4008 input_bfd = input_bfd->link.next, bfd_indx++)
4010 Elf_Internal_Shdr *symtab_hdr;
4012 Elf_Internal_Sym *local_syms;
4014 /* We'll need the symbol table in a second. */
4015 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4016 if (symtab_hdr->sh_info == 0)
4019 local_syms = htab->all_local_syms[bfd_indx];
4021 /* Walk over each section attached to the input bfd. */
4022 for (section = input_bfd->sections;
4024 section = section->next)
4026 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4028 /* If there aren't any relocs, then there's nothing more
4030 if ((section->flags & SEC_RELOC) == 0
4031 || section->reloc_count == 0)
4034 /* If this section is a link-once section that will be
4035 discarded, then don't create any stubs. */
4036 if (section->output_section == NULL
4037 || section->output_section->owner != output_bfd)
4040 /* Get the relocs. */
4042 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
4044 if (internal_relocs == NULL)
4045 goto error_ret_free_local;
4047 /* Now examine each relocation. */
4048 irela = internal_relocs;
4049 irelaend = irela + section->reloc_count;
4050 for (; irela < irelaend; irela++)
4052 unsigned int r_type, r_indx;
4053 enum elf_metag_stub_type stub_type;
4054 struct elf_metag_stub_hash_entry *hsh;
4057 bfd_vma destination;
4058 struct elf_metag_link_hash_entry *hh;
4060 const asection *id_sec;
4062 r_type = ELF32_R_TYPE (irela->r_info);
4063 r_indx = ELF32_R_SYM (irela->r_info);
4065 if (r_type >= (unsigned int) R_METAG_MAX)
4067 bfd_set_error (bfd_error_bad_value);
4068 error_ret_free_internal:
4069 if (elf_section_data (section)->relocs == NULL)
4070 free (internal_relocs);
4071 goto error_ret_free_local;
4074 /* Only look for stubs on CALLR and B instructions. */
4075 if (!(r_type == (unsigned int) R_METAG_RELBRANCH ||
4076 r_type == (unsigned int) R_METAG_RELBRANCH_PLT))
4079 /* Now determine the call target, its name, value,
4085 if (r_indx < symtab_hdr->sh_info)
4087 /* It's a local symbol. */
4088 Elf_Internal_Sym *sym;
4089 Elf_Internal_Shdr *hdr;
4092 sym = local_syms + r_indx;
4093 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4094 sym_value = sym->st_value;
4095 shndx = sym->st_shndx;
4096 if (shndx < elf_numsections (input_bfd))
4098 hdr = elf_elfsections (input_bfd)[shndx];
4099 sym_sec = hdr->bfd_section;
4100 destination = (sym_value + irela->r_addend
4101 + sym_sec->output_offset
4102 + sym_sec->output_section->vma);
4107 /* It's an external symbol. */
4110 e_indx = r_indx - symtab_hdr->sh_info;
4111 hh = ((struct elf_metag_link_hash_entry *)
4112 elf_sym_hashes (input_bfd)[e_indx]);
4114 while (hh->eh.root.type == bfd_link_hash_indirect
4115 || hh->eh.root.type == bfd_link_hash_warning)
4116 hh = ((struct elf_metag_link_hash_entry *)
4117 hh->eh.root.u.i.link);
4119 if (hh->eh.root.type == bfd_link_hash_defined
4120 || hh->eh.root.type == bfd_link_hash_defweak)
4122 sym_sec = hh->eh.root.u.def.section;
4123 sym_value = hh->eh.root.u.def.value;
4124 if (hh->eh.plt.offset != (bfd_vma) -1
4125 && hh->eh.dynindx != -1
4126 && r_type == (unsigned int) R_METAG_RELBRANCH_PLT)
4128 sym_sec = htab->splt;
4129 sym_value = hh->eh.plt.offset;
4132 if (sym_sec->output_section != NULL)
4133 destination = (sym_value + irela->r_addend
4134 + sym_sec->output_offset
4135 + sym_sec->output_section->vma);
4139 else if (hh->eh.root.type == bfd_link_hash_undefweak)
4144 else if (hh->eh.root.type == bfd_link_hash_undefined)
4146 if (! (info->unresolved_syms_in_objects == RM_IGNORE
4147 && (ELF_ST_VISIBILITY (hh->eh.other)
4153 bfd_set_error (bfd_error_bad_value);
4154 goto error_ret_free_internal;
4158 /* Determine what (if any) linker stub is needed. */
4159 stub_type = metag_type_of_stub (section, irela, hh,
4161 if (stub_type == metag_stub_none)
4164 /* Support for grouping stub sections. */
4165 id_sec = htab->stub_group[section->id].link_sec;
4167 /* Get the name of this stub. */
4168 stub_name = metag_stub_name (id_sec, sym_sec, hh, irela);
4170 goto error_ret_free_internal;
4172 hsh = metag_stub_hash_lookup (&htab->bstab,
4177 /* The proper stub has already been created. */
4182 hsh = metag_add_stub (stub_name, section, htab);
4186 goto error_ret_free_internal;
4188 hsh->target_value = sym_value;
4189 hsh->target_section = sym_sec;
4190 hsh->stub_type = stub_type;
4192 hsh->addend = irela->r_addend;
4193 stub_changed = TRUE;
4196 /* We're done with the internal relocs, free them. */
4197 if (elf_section_data (section)->relocs == NULL)
4198 free (internal_relocs);
4205 /* OK, we've added some stubs. Find out the new size of the
4207 for (stub_sec = htab->stub_bfd->sections;
4209 stub_sec = stub_sec->next)
4212 bfd_hash_traverse (&htab->bstab, metag_size_one_stub, htab);
4214 /* Ask the linker to do its stuff. */
4215 (*htab->layout_sections_again) ();
4216 stub_changed = FALSE;
4219 free (htab->all_local_syms);
4222 error_ret_free_local:
4223 free (htab->all_local_syms);
4227 /* Build all the stubs associated with the current output file. The
4228 stubs are kept in a hash table attached to the main linker hash
4229 table. This function is called via metagelf_finish in the linker. */
4232 elf_metag_build_stubs (struct bfd_link_info *info)
4235 struct bfd_hash_table *table;
4236 struct elf_metag_link_hash_table *htab;
4238 htab = metag_link_hash_table (info);
4240 for (stub_sec = htab->stub_bfd->sections;
4242 stub_sec = stub_sec->next)
4246 /* Allocate memory to hold the linker stubs. */
4247 size = stub_sec->size;
4248 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4249 if (stub_sec->contents == NULL && size != 0)
4254 /* Build the stubs as directed by the stub hash table. */
4255 table = &htab->bstab;
4256 bfd_hash_traverse (table, metag_build_one_stub, info);
4261 /* Return TRUE if SYM represents a local label symbol. */
4264 elf_metag_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
4266 if (name[0] == '$' && name[1] == 'L')
4268 return _bfd_elf_is_local_label_name (abfd, name);
4271 /* Return address for Ith PLT stub in section PLT, for relocation REL
4272 or (bfd_vma) -1 if it should not be included. */
4275 elf_metag_plt_sym_val (bfd_vma i, const asection *plt,
4276 const arelent *rel ATTRIBUTE_UNUSED)
4278 return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4281 #define ELF_ARCH bfd_arch_metag
4282 #define ELF_TARGET_ID METAG_ELF_DATA
4283 #define ELF_MACHINE_CODE EM_METAG
4284 #define ELF_MINPAGESIZE 0x1000
4285 #define ELF_MAXPAGESIZE 0x4000
4286 #define ELF_COMMONPAGESIZE 0x1000
4288 #define TARGET_LITTLE_SYM metag_elf32_vec
4289 #define TARGET_LITTLE_NAME "elf32-metag"
4291 #define elf_symbol_leading_char '_'
4293 #define elf_info_to_howto_rel NULL
4294 #define elf_info_to_howto metag_info_to_howto_rela
4296 #define bfd_elf32_bfd_is_local_label_name elf_metag_is_local_label_name
4297 #define bfd_elf32_bfd_link_hash_table_create \
4298 elf_metag_link_hash_table_create
4299 #define elf_backend_relocate_section elf_metag_relocate_section
4300 #define elf_backend_gc_mark_hook elf_metag_gc_mark_hook
4301 #define elf_backend_gc_sweep_hook elf_metag_gc_sweep_hook
4302 #define elf_backend_check_relocs elf_metag_check_relocs
4303 #define elf_backend_create_dynamic_sections elf_metag_create_dynamic_sections
4304 #define elf_backend_adjust_dynamic_symbol elf_metag_adjust_dynamic_symbol
4305 #define elf_backend_finish_dynamic_symbol elf_metag_finish_dynamic_symbol
4306 #define elf_backend_finish_dynamic_sections elf_metag_finish_dynamic_sections
4307 #define elf_backend_size_dynamic_sections elf_metag_size_dynamic_sections
4308 #define elf_backend_omit_section_dynsym \
4309 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4310 #define elf_backend_post_process_headers elf_metag_post_process_headers
4311 #define elf_backend_reloc_type_class elf_metag_reloc_type_class
4312 #define elf_backend_copy_indirect_symbol elf_metag_copy_indirect_symbol
4313 #define elf_backend_plt_sym_val elf_metag_plt_sym_val
4315 #define elf_backend_can_gc_sections 1
4316 #define elf_backend_can_refcount 1
4317 #define elf_backend_got_header_size 12
4318 #define elf_backend_rela_normal 1
4319 #define elf_backend_want_got_sym 0
4320 #define elf_backend_want_plt_sym 0
4321 #define elf_backend_plt_readonly 1
4323 #define bfd_elf32_bfd_reloc_type_lookup metag_reloc_type_lookup
4324 #define bfd_elf32_bfd_reloc_name_lookup metag_reloc_name_lookup
4326 #include "elf32-target.h"