1 /* Meta support for 32-bit ELF
2 Copyright (C) 2013-2020 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 Always remember to use GNU Coding Style. */
91 #define PLT_ENTRY_SIZE sizeof(plt_entry)
93 static reloc_howto_type elf_metag_howto_table
[] =
95 /* High order 16 bit absolute. */
96 HOWTO (R_METAG_HIADDR16
, /* type */
98 2, /* size (0 = byte, 1 = short, 2 = long) */
100 FALSE
, /* pc_relative */
102 complain_overflow_dont
, /* complain_on_overflow */
103 bfd_elf_generic_reloc
, /* special_function */
104 "R_METAG_HIADDR16", /* name */
105 FALSE
, /* partial_inplace */
107 0x0007fff8, /* dst_mask */
108 FALSE
), /* pcrel_offset */
110 /* Low order 16 bit absolute. */
111 HOWTO (R_METAG_LOADDR16
, /* type */
113 2, /* size (0 = byte, 1 = short, 2 = long) */
115 FALSE
, /* pc_relative */
117 complain_overflow_dont
,/* complain_on_overflow */
118 bfd_elf_generic_reloc
, /* special_function */
119 "R_METAG_LOADDR16", /* name */
120 FALSE
, /* partial_inplace */
122 0x0007fff8, /* dst_mask */
123 FALSE
), /* pcrel_offset */
125 /* 32 bit absolute. */
126 HOWTO (R_METAG_ADDR32
, /* type */
128 2, /* size (0 = byte, 1 = short, 2 = long) */
130 FALSE
, /* pc_relative */
132 complain_overflow_bitfield
, /* complain_on_overflow */
133 bfd_elf_generic_reloc
, /* special_function */
134 "R_METAG_ADDR32", /* name */
135 FALSE
, /* partial_inplace */
136 0x00000000, /* src_mask */
137 0xffffffff, /* dst_mask */
138 FALSE
), /* pcrel_offset */
141 HOWTO (R_METAG_NONE
, /* type */
143 3, /* size (0 = byte, 1 = short, 2 = long) */
145 FALSE
, /* pc_relative */
147 complain_overflow_dont
, /* complain_on_overflow */
148 bfd_elf_generic_reloc
, /* special_function */
149 "R_METAG_NONE", /* name */
150 FALSE
, /* partial_inplace */
153 FALSE
), /* pcrel_offset */
155 /* 19 bit pc relative */
156 HOWTO (R_METAG_RELBRANCH
, /* type */
158 2, /* size (0 = byte, 1 = short, 2 = long) */
160 TRUE
, /* pc_relative */
162 complain_overflow_signed
, /* complain_on_overflow */
163 bfd_elf_generic_reloc
, /* special_function */
164 "R_METAG_RELBRANCH", /* name */
165 FALSE
, /* partial_inplace */
167 0x00ffffe0, /* dst_mask */
168 FALSE
), /* pcrel_offset */
171 HOWTO (R_METAG_GETSETOFF
, /* type */
173 1, /* size (0 = byte, 1 = short, 2 = long) */
175 FALSE
, /* pc_relative */
177 complain_overflow_dont
, /* complain_on_overflow */
178 bfd_elf_generic_reloc
, /* special_function */
179 "R_METAG_GETSETOFF", /* name */
180 FALSE
, /* partial_inplace */
183 FALSE
), /* pcrel_offset */
210 HOWTO (R_METAG_GNU_VTINHERIT
, /* type */
212 2, /* size (0 = byte, 1 = short, 2 = long) */
214 FALSE
, /* pc_relative */
216 complain_overflow_dont
, /* complain_on_overflow */
217 NULL
, /* special_function */
218 "R_METAG_GNU_VTINHERIT", /* name */
219 FALSE
, /* partial_inplace */
222 FALSE
), /* pcrel_offset */
224 HOWTO (R_METAG_GNU_VTENTRY
, /* type */
226 2, /* size (0 = byte, 1 = short, 2 = long) */
228 FALSE
, /* pc_relative */
230 complain_overflow_dont
, /* complain_on_overflow */
231 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
232 "R_METAG_GNU_VTENTRY", /* name */
233 FALSE
, /* partial_inplace */
236 FALSE
), /* pcrel_offset */
238 /* High order 16 bit GOT offset */
239 HOWTO (R_METAG_HI16_GOTOFF
, /* type */
241 2, /* size (0 = byte, 1 = short, 2 = long) */
243 FALSE
, /* pc_relative */
245 complain_overflow_dont
, /* complain_on_overflow */
246 bfd_elf_generic_reloc
, /* special_function */
247 "R_METAG_HI16_GOTOFF", /* name */
248 FALSE
, /* partial_inplace */
250 0x0007fff8, /* dst_mask */
251 FALSE
), /* pcrel_offset */
253 /* Low order 16 bit GOT offset */
254 HOWTO (R_METAG_LO16_GOTOFF
, /* type */
256 2, /* size (0 = byte, 1 = short, 2 = long) */
258 FALSE
, /* pc_relative */
260 complain_overflow_dont
, /* complain_on_overflow */
261 bfd_elf_generic_reloc
, /* special_function */
262 "R_METAG_LO16_GOTOFF", /* name */
263 FALSE
, /* partial_inplace */
265 0x0007fff8, /* dst_mask */
266 FALSE
), /* pcrel_offset */
268 /* GET/SET GOT offset */
269 HOWTO (R_METAG_GETSET_GOTOFF
, /* type */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
273 FALSE
, /* pc_relative */
275 complain_overflow_dont
, /* complain_on_overflow */
276 bfd_elf_generic_reloc
, /* special_function */
277 "R_METAG_GETSET_GOTOFF", /* name */
278 FALSE
, /* partial_inplace */
281 FALSE
), /* pcrel_offset */
283 /* GET/SET GOT relative */
284 HOWTO (R_METAG_GETSET_GOT
, /* type */
286 1, /* size (0 = byte, 1 = short, 2 = long) */
288 FALSE
, /* pc_relative */
290 complain_overflow_dont
, /* complain_on_overflow */
291 bfd_elf_generic_reloc
, /* special_function */
292 "R_METAG_GETSET_GOT", /* name */
293 FALSE
, /* partial_inplace */
296 FALSE
), /* pcrel_offset */
298 /* High order 16 bit GOT reference */
299 HOWTO (R_METAG_HI16_GOTPC
, /* type */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
303 FALSE
, /* pc_relative */
305 complain_overflow_dont
, /* complain_on_overflow */
306 bfd_elf_generic_reloc
, /* special_function */
307 "R_METAG_HI16_GOTPC", /* name */
308 FALSE
, /* partial_inplace */
310 0x0007fff8, /* dst_mask */
311 FALSE
), /* pcrel_offset */
313 /* Low order 16 bit GOT reference */
314 HOWTO (R_METAG_LO16_GOTPC
, /* type */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE
, /* pc_relative */
320 complain_overflow_dont
, /* complain_on_overflow */
321 bfd_elf_generic_reloc
, /* special_function */
322 "R_METAG_LO16_GOTPC", /* name */
323 FALSE
, /* partial_inplace */
325 0x0007fff8, /* dst_mask */
326 FALSE
), /* pcrel_offset */
328 /* High order 16 bit PLT */
329 HOWTO (R_METAG_HI16_PLT
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_dont
, /* complain_on_overflow */
336 bfd_elf_generic_reloc
, /* special_function */
337 "R_METAG_HI16_PLT", /* name */
338 FALSE
, /* partial_inplace */
340 0x0007fff8, /* dst_mask */
341 FALSE
), /* pcrel_offset */
343 /* Low order 16 bit PLT */
344 HOWTO (R_METAG_LO16_PLT
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 FALSE
, /* pc_relative */
350 complain_overflow_dont
, /* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_METAG_LO16_PLT", /* name */
353 FALSE
, /* partial_inplace */
355 0xffffffff, /* dst_mask */
356 FALSE
), /* pcrel_offset */
358 HOWTO (R_METAG_RELBRANCH_PLT
, /* type */
360 2, /* size (0 = byte, 1 = short, 2 = long) */
362 TRUE
, /* pc_relative */
364 complain_overflow_signed
, /* complain_on_overflow */
365 bfd_elf_generic_reloc
, /* special_function */
366 "R_METAG_RELBRANCH_PLT", /* name */
367 FALSE
, /* partial_inplace */
369 0x00ffffe0, /* dst_mask */
370 FALSE
), /* pcrel_offset */
372 /* Dummy relocs used by the linker internally. */
373 HOWTO (R_METAG_GOTOFF
, /* type */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
377 FALSE
, /* pc_relative */
379 complain_overflow_bitfield
, /* complain_on_overflow */
380 bfd_elf_generic_reloc
, /* special_function */
381 "R_METAG_GOTOFF", /* name */
382 FALSE
, /* partial_inplace */
383 0xffffffff, /* src_mask */
384 0xffffffff, /* dst_mask */
385 FALSE
), /* pcrel_offset */
387 HOWTO (R_METAG_PLT
, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 FALSE
, /* pc_relative */
393 complain_overflow_bitfield
, /* complain_on_overflow */
394 bfd_elf_generic_reloc
, /* special_function */
395 "R_METAG_GOTOFF", /* name */
396 FALSE
, /* partial_inplace */
397 0xffffffff, /* src_mask */
398 0xffffffff, /* dst_mask */
399 FALSE
), /* pcrel_offset */
401 /* This is used only by the dynamic linker. The symbol should exist
402 both in the object being run and in some shared library. The
403 dynamic linker copies the data addressed by the symbol from the
404 shared library into the object, because the object being
405 run has to have the data at some particular address. */
406 HOWTO (R_METAG_COPY
, /* type */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
410 FALSE
, /* pc_relative */
412 complain_overflow_bitfield
, /* complain_on_overflow */
413 bfd_elf_generic_reloc
, /* special_function */
414 "R_METAG_COPY", /* name */
415 FALSE
, /* partial_inplace */
416 0xffffffff, /* src_mask */
417 0xffffffff, /* dst_mask */
418 FALSE
), /* pcrel_offset */
420 /* Marks a procedure linkage table entry for a symbol. */
421 HOWTO (R_METAG_JMP_SLOT
, /* type */
423 2, /* size (0 = byte, 1 = short, 2 = long) */
425 FALSE
, /* pc_relative */
427 complain_overflow_bitfield
, /* complain_on_overflow */
428 bfd_elf_generic_reloc
, /* special_function */
429 "R_METAG_JMP_SLOT", /* name */
430 FALSE
, /* partial_inplace */
431 0xffffffff, /* src_mask */
432 0xffffffff, /* dst_mask */
433 FALSE
), /* pcrel_offset */
435 /* Used only by the dynamic linker. When the object is run, this
436 longword is set to the load address of the object, plus the
438 HOWTO (R_METAG_RELATIVE
, /* type */
440 2, /* size (0 = byte, 1 = short, 2 = long) */
442 FALSE
, /* pc_relative */
444 complain_overflow_bitfield
, /* complain_on_overflow */
445 bfd_elf_generic_reloc
, /* special_function */
446 "R_METAG_RELATIVE", /* name */
447 FALSE
, /* partial_inplace */
448 0xffffffff, /* src_mask */
449 0xffffffff, /* dst_mask */
450 FALSE
), /* pcrel_offset */
452 HOWTO (R_METAG_GLOB_DAT
, /* type */
454 2, /* size (0 = byte, 1 = short, 2 = long) */
456 FALSE
, /* pc_relative */
458 complain_overflow_bitfield
, /* complain_on_overflow */
459 bfd_elf_generic_reloc
, /* special_function */
460 "R_METAG_GLOB_DAT", /* name */
461 FALSE
, /* partial_inplace */
462 0xffffffff, /* src_mask */
463 0xffffffff, /* dst_mask */
464 FALSE
), /* pcrel_offset */
466 HOWTO (R_METAG_TLS_GD
, /* type */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE
, /* pc_relative */
472 complain_overflow_dont
, /* complain_on_overflow */
473 bfd_elf_generic_reloc
, /* special_function */
474 "R_METAG_TLS_GD", /* name */
475 FALSE
, /* partial_inplace */
477 0x0007fff8, /* dst_mask */
478 FALSE
), /* pcrel_offset */
480 HOWTO (R_METAG_TLS_LDM
, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 FALSE
, /* pc_relative */
486 complain_overflow_bitfield
, /* complain_on_overflow */
487 bfd_elf_generic_reloc
, /* special_function */
488 "R_METAG_TLS_LDM", /* name */
489 FALSE
, /* partial_inplace */
491 0x0007fff8, /* dst_mask */
492 FALSE
), /* pcrel_offset */
494 HOWTO (R_METAG_TLS_LDO_HI16
, /* type */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
498 FALSE
, /* pc_relative */
500 complain_overflow_bitfield
, /* complain_on_overflow */
501 bfd_elf_generic_reloc
, /* special_function */
502 "R_METAG_TLS_LDO_HI16", /* name */
503 FALSE
, /* partial_inplace */
505 0x0007fff8, /* dst_mask */
506 FALSE
), /* pcrel_offset */
508 HOWTO (R_METAG_TLS_LDO_LO16
, /* type */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
512 FALSE
, /* pc_relative */
514 complain_overflow_bitfield
, /* complain_on_overflow */
515 bfd_elf_generic_reloc
, /* special_function */
516 "R_METAG_TLS_LDO_LO16", /* name */
517 FALSE
, /* partial_inplace */
519 0x0007fff8, /* dst_mask */
520 FALSE
), /* pcrel_offset */
522 /* Dummy reloc used by the linker internally. */
523 HOWTO (R_METAG_TLS_LDO
, /* type */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
527 FALSE
, /* pc_relative */
529 complain_overflow_bitfield
, /* complain_on_overflow */
530 bfd_elf_generic_reloc
, /* special_function */
531 "R_METAG_TLS_LDO", /* name */
532 FALSE
, /* partial_inplace */
534 0x0007fff8, /* dst_mask */
535 FALSE
), /* pcrel_offset */
537 HOWTO (R_METAG_TLS_IE
, /* type */
539 2, /* size (0 = byte, 1 = short, 2 = long) */
541 FALSE
, /* pc_relative */
543 complain_overflow_dont
, /* complain_on_overflow */
544 bfd_elf_generic_reloc
, /* special_function */
545 "R_METAG_TLS_IE", /* name */
546 FALSE
, /* partial_inplace */
548 0x0007ff80, /* dst_mask */
549 FALSE
), /* pcrel_offset */
551 /* Dummy reloc used by the linker internally. */
552 HOWTO (R_METAG_TLS_IENONPIC
, /* type */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
556 FALSE
, /* pc_relative */
558 complain_overflow_dont
, /* complain_on_overflow */
559 bfd_elf_generic_reloc
, /* special_function */
560 "R_METAG_TLS_IENONPIC", /* name */
561 FALSE
, /* partial_inplace */
563 0x0007fff8, /* dst_mask */
564 FALSE
), /* pcrel_offset */
566 HOWTO (R_METAG_TLS_IENONPIC_HI16
,/* type */
568 2, /* size (0 = byte, 1 = short, 2 = long) */
570 FALSE
, /* pc_relative */
572 complain_overflow_dont
, /* complain_on_overflow */
573 bfd_elf_generic_reloc
, /* special_function */
574 "R_METAG_TLS_IENONPIC_HI16", /* name */
575 FALSE
, /* partial_inplace */
577 0x0007fff8, /* dst_mask */
578 FALSE
), /* pcrel_offset */
580 HOWTO (R_METAG_TLS_IENONPIC_LO16
,/* type */
582 2, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_dont
, /* complain_on_overflow */
587 bfd_elf_generic_reloc
, /* special_function */
588 "R_METAG_TLS_IENONPIC_LO16", /* name */
589 FALSE
, /* partial_inplace */
591 0x0007fff8, /* dst_mask */
592 FALSE
), /* pcrel_offset */
594 HOWTO (R_METAG_TLS_TPOFF
, /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE
, /* pc_relative */
600 complain_overflow_bitfield
, /* complain_on_overflow */
601 bfd_elf_generic_reloc
, /* special_function */
602 "R_METAG_TLS_TPOFF", /* name */
603 FALSE
, /* partial_inplace */
605 0xffffffff, /* dst_mask */
606 FALSE
), /* pcrel_offset */
608 HOWTO (R_METAG_TLS_DTPMOD
, /* type */
610 2, /* size (0 = byte, 1 = short, 2 = long) */
612 FALSE
, /* pc_relative */
614 complain_overflow_bitfield
, /* complain_on_overflow */
615 bfd_elf_generic_reloc
, /* special_function */
616 "R_METAG_TLS_DTPMOD", /* name */
617 FALSE
, /* partial_inplace */
619 0xffffffff, /* dst_mask */
620 FALSE
), /* pcrel_offset */
622 HOWTO (R_METAG_TLS_DTPOFF
, /* type */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
626 FALSE
, /* pc_relative */
628 complain_overflow_bitfield
, /* complain_on_overflow */
629 bfd_elf_generic_reloc
, /* special_function */
630 "R_METAG_TLS_DTPOFF", /* name */
631 FALSE
, /* partial_inplace */
633 0xffffffff, /* dst_mask */
634 FALSE
), /* pcrel_offset */
636 /* Dummy reloc used by the linker internally. */
637 HOWTO (R_METAG_TLS_LE
, /* type */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
641 FALSE
, /* pc_relative */
643 complain_overflow_bitfield
, /* complain_on_overflow */
644 bfd_elf_generic_reloc
, /* special_function */
645 "R_METAG_TLS_LE", /* name */
646 FALSE
, /* partial_inplace */
648 0xffffffff, /* dst_mask */
649 FALSE
), /* pcrel_offset */
651 HOWTO (R_METAG_TLS_LE_HI16
, /* type */
653 2, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE
, /* pc_relative */
657 complain_overflow_dont
, /* complain_on_overflow */
658 bfd_elf_generic_reloc
, /* special_function */
659 "R_METAG_TLS_LE_HI16", /* name */
660 FALSE
, /* partial_inplace */
662 0x0007fff8, /* dst_mask */
663 FALSE
), /* pcrel_offset */
665 HOWTO (R_METAG_TLS_LE_LO16
, /* type */
667 2, /* size (0 = byte, 1 = short, 2 = long) */
669 FALSE
, /* pc_relative */
671 complain_overflow_dont
, /* complain_on_overflow */
672 bfd_elf_generic_reloc
, /* special_function */
673 "R_METAG_TLS_LE_LO16", /* name */
674 FALSE
, /* partial_inplace */
676 0x0007fff8, /* dst_mask */
677 FALSE
), /* pcrel_offset */
681 #define BRANCH_BITS 19
683 /* The GOT is typically accessed using a [GS]ETD instruction. The size of the
684 immediate offset which can be used in such instructions therefore limits
685 the usable size of the GOT. If the base register for the [GS]ETD (A1LbP)
686 is pointing to the base of the GOT then the size is limited to the maximum
687 11 bits unsigned dword offset, or 2^13 = 0x2000 bytes. However the offset
688 in a [GS]ETD instruction is signed, so by setting the base address register
689 to an offset of that 0x2000 byte maximum unsigned offset from the base of
690 the GOT we can use negative offsets in addition to positive. This
691 effectively doubles the usable GOT size to 0x4000 bytes. */
692 #define GOT_REG_OFFSET 0x2000
694 struct metag_reloc_map
696 bfd_reloc_code_real_type bfd_reloc_val
;
697 unsigned int metag_reloc_val
;
700 static const struct metag_reloc_map metag_reloc_map
[] =
702 { BFD_RELOC_NONE
, R_METAG_NONE
},
703 { BFD_RELOC_32
, R_METAG_ADDR32
},
704 { BFD_RELOC_METAG_HIADDR16
, R_METAG_HIADDR16
},
705 { BFD_RELOC_METAG_LOADDR16
, R_METAG_LOADDR16
},
706 { BFD_RELOC_METAG_RELBRANCH
, R_METAG_RELBRANCH
},
707 { BFD_RELOC_METAG_GETSETOFF
, R_METAG_GETSETOFF
},
708 { BFD_RELOC_VTABLE_INHERIT
, R_METAG_GNU_VTINHERIT
},
709 { BFD_RELOC_VTABLE_ENTRY
, R_METAG_GNU_VTENTRY
},
710 { BFD_RELOC_METAG_REL8
, R_METAG_REL8
},
711 { BFD_RELOC_METAG_REL16
, R_METAG_REL16
},
712 { BFD_RELOC_METAG_HI16_GOTOFF
, R_METAG_HI16_GOTOFF
},
713 { BFD_RELOC_METAG_LO16_GOTOFF
, R_METAG_LO16_GOTOFF
},
714 { BFD_RELOC_METAG_GETSET_GOTOFF
, R_METAG_GETSET_GOTOFF
},
715 { BFD_RELOC_METAG_GETSET_GOT
, R_METAG_GETSET_GOT
},
716 { BFD_RELOC_METAG_HI16_GOTPC
, R_METAG_HI16_GOTPC
},
717 { BFD_RELOC_METAG_LO16_GOTPC
, R_METAG_LO16_GOTPC
},
718 { BFD_RELOC_METAG_HI16_PLT
, R_METAG_HI16_PLT
},
719 { BFD_RELOC_METAG_LO16_PLT
, R_METAG_LO16_PLT
},
720 { BFD_RELOC_METAG_RELBRANCH_PLT
, R_METAG_RELBRANCH_PLT
},
721 { BFD_RELOC_METAG_GOTOFF
, R_METAG_GOTOFF
},
722 { BFD_RELOC_METAG_PLT
, R_METAG_PLT
},
723 { BFD_RELOC_METAG_COPY
, R_METAG_COPY
},
724 { BFD_RELOC_METAG_JMP_SLOT
, R_METAG_JMP_SLOT
},
725 { BFD_RELOC_METAG_RELATIVE
, R_METAG_RELATIVE
},
726 { BFD_RELOC_METAG_GLOB_DAT
, R_METAG_GLOB_DAT
},
727 { BFD_RELOC_METAG_TLS_GD
, R_METAG_TLS_GD
},
728 { BFD_RELOC_METAG_TLS_LDM
, R_METAG_TLS_LDM
},
729 { BFD_RELOC_METAG_TLS_LDO_HI16
, R_METAG_TLS_LDO_HI16
},
730 { BFD_RELOC_METAG_TLS_LDO_LO16
, R_METAG_TLS_LDO_LO16
},
731 { BFD_RELOC_METAG_TLS_LDO
, R_METAG_TLS_LDO
},
732 { BFD_RELOC_METAG_TLS_IE
, R_METAG_TLS_IE
},
733 { BFD_RELOC_METAG_TLS_IENONPIC
, R_METAG_TLS_IENONPIC
},
734 { BFD_RELOC_METAG_TLS_IENONPIC_HI16
, R_METAG_TLS_IENONPIC_HI16
},
735 { BFD_RELOC_METAG_TLS_IENONPIC_LO16
, R_METAG_TLS_IENONPIC_LO16
},
736 { BFD_RELOC_METAG_TLS_TPOFF
, R_METAG_TLS_TPOFF
},
737 { BFD_RELOC_METAG_TLS_DTPMOD
, R_METAG_TLS_DTPMOD
},
738 { BFD_RELOC_METAG_TLS_DTPOFF
, R_METAG_TLS_DTPOFF
},
739 { BFD_RELOC_METAG_TLS_LE
, R_METAG_TLS_LE
},
740 { BFD_RELOC_METAG_TLS_LE_HI16
, R_METAG_TLS_LE_HI16
},
741 { BFD_RELOC_METAG_TLS_LE_LO16
, R_METAG_TLS_LE_LO16
},
744 enum elf_metag_stub_type
746 metag_stub_long_branch
,
747 metag_stub_long_branch_shared
,
751 struct elf_metag_stub_hash_entry
753 /* Base hash table entry structure. */
754 struct bfd_hash_entry bh_root
;
756 /* The stub section. */
759 /* Offset within stub_sec of the beginning of this stub. */
762 /* Given the symbol's value and its section we can determine its final
763 value when building the stubs (so the stub knows where to jump. */
764 bfd_vma target_value
;
765 asection
*target_section
;
767 enum elf_metag_stub_type stub_type
;
769 /* The symbol table entry, if any, that this was derived from. */
770 struct elf_metag_link_hash_entry
*hh
;
772 /* And the reloc addend that this was derived from. */
775 /* Where this stub is being called from, or, in the case of combined
776 stub sections, the first input section in the group. */
780 struct elf_metag_link_hash_entry
782 struct elf_link_hash_entry eh
;
784 /* A pointer to the most recently used stub hash entry against this
786 struct elf_metag_stub_hash_entry
*hsh_cache
;
790 GOT_UNKNOWN
= 0, GOT_NORMAL
= 1, GOT_TLS_IE
= 2, GOT_TLS_LDM
= 4, GOT_TLS_GD
= 8
794 struct elf_metag_link_hash_table
796 /* The main hash table. */
797 struct elf_link_hash_table etab
;
799 /* The stub hash table. */
800 struct bfd_hash_table bstab
;
802 /* Linker stub bfd. */
805 /* Linker call-backs. */
806 asection
* (*add_stub_section
) (const char *, asection
*);
807 void (*layout_sections_again
) (void);
809 /* Array to keep track of which stub sections have been created, and
810 information on stub grouping. */
813 /* This is the section to which stubs in the group will be
816 /* The stub section. */
820 /* Assorted information used by elf_metag_size_stubs. */
821 unsigned int bfd_count
;
822 unsigned int top_index
;
823 asection
**input_list
;
824 Elf_Internal_Sym
**all_local_syms
;
826 /* Small local sym cache. */
827 struct sym_cache sym_cache
;
829 /* Data for LDM relocations. */
832 bfd_signed_vma refcount
;
837 /* Return the base vma address which should be subtracted from the
838 real address when resolving a dtpoff relocation. This is PT_TLS
841 dtpoff_base (struct bfd_link_info
*info
)
843 /* If tls_sec is NULL, we should have signalled an error already. */
844 if (elf_hash_table (info
)->tls_sec
== NULL
)
846 return elf_hash_table (info
)->tls_sec
->vma
;
849 /* Return the relocation value for R_METAG_TLS_IE */
851 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
853 /* If tls_sec is NULL, we should have signalled an error already. */
854 if (elf_hash_table (info
)->tls_sec
== NULL
)
856 /* METAG TLS ABI is variant I and static TLS blocks start just after
857 tcbhead structure which has 2 pointer fields. */
858 return (address
- elf_hash_table (info
)->tls_sec
->vma
859 + align_power ((bfd_vma
) 8,
860 elf_hash_table (info
)->tls_sec
->alignment_power
));
864 metag_info_to_howto_rela (bfd
*abfd
,
866 Elf_Internal_Rela
*dst
)
870 r_type
= ELF32_R_TYPE (dst
->r_info
);
871 if (r_type
>= (unsigned int) R_METAG_MAX
)
873 /* xgettext:c-format */
874 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
876 bfd_set_error (bfd_error_bad_value
);
879 cache_ptr
->howto
= & elf_metag_howto_table
[r_type
];
883 static reloc_howto_type
*
884 metag_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
885 bfd_reloc_code_real_type code
)
889 for (i
= 0; i
< sizeof (metag_reloc_map
) / sizeof (metag_reloc_map
[0]); i
++)
890 if (metag_reloc_map
[i
].bfd_reloc_val
== code
)
891 return & elf_metag_howto_table
[metag_reloc_map
[i
].metag_reloc_val
];
896 static reloc_howto_type
*
897 metag_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
902 for (i
= 0; i
< sizeof (elf_metag_howto_table
) / sizeof (elf_metag_howto_table
[0]); i
++)
903 if (elf_metag_howto_table
[i
].name
!= NULL
904 && strcasecmp (elf_metag_howto_table
[i
].name
, r_name
) == 0)
905 return &elf_metag_howto_table
[i
];
910 /* Various hash macros and functions. */
911 #define metag_link_hash_table(p) \
912 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
913 == METAG_ELF_DATA ? ((struct elf_metag_link_hash_table *) ((p)->hash)) : NULL)
915 #define metag_elf_hash_entry(ent) \
916 ((struct elf_metag_link_hash_entry *)(ent))
918 #define metag_stub_hash_entry(ent) \
919 ((struct elf_metag_stub_hash_entry *)(ent))
921 #define metag_stub_hash_lookup(table, string, create, copy) \
922 ((struct elf_metag_stub_hash_entry *) \
923 bfd_hash_lookup ((table), (string), (create), (copy)))
925 #define metag_elf_local_got_tls_type(abfd) \
926 ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info)))
928 /* Assorted hash table functions. */
930 /* Initialize an entry in the stub hash table. */
932 static struct bfd_hash_entry
*
933 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
934 struct bfd_hash_table
*table
,
937 /* Allocate the structure if it has not already been allocated by a
941 entry
= bfd_hash_allocate (table
,
942 sizeof (struct elf_metag_stub_hash_entry
));
947 /* Call the allocation method of the superclass. */
948 entry
= bfd_hash_newfunc (entry
, table
, string
);
951 struct elf_metag_stub_hash_entry
*hsh
;
953 /* Initialize the local fields. */
954 hsh
= (struct elf_metag_stub_hash_entry
*) entry
;
955 hsh
->stub_sec
= NULL
;
956 hsh
->stub_offset
= 0;
957 hsh
->target_value
= 0;
958 hsh
->target_section
= NULL
;
959 hsh
->stub_type
= metag_stub_long_branch
;
967 /* Initialize an entry in the link hash table. */
969 static struct bfd_hash_entry
*
970 metag_link_hash_newfunc (struct bfd_hash_entry
*entry
,
971 struct bfd_hash_table
*table
,
974 /* Allocate the structure if it has not already been allocated by a
978 entry
= bfd_hash_allocate (table
,
979 sizeof (struct elf_metag_link_hash_entry
));
984 /* Call the allocation method of the superclass. */
985 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
988 struct elf_metag_link_hash_entry
*hh
;
990 /* Initialize the local fields. */
991 hh
= (struct elf_metag_link_hash_entry
*) entry
;
992 hh
->hsh_cache
= NULL
;
993 hh
->tls_type
= GOT_UNKNOWN
;
999 /* Free the derived linker hash table. */
1002 elf_metag_link_hash_table_free (bfd
*obfd
)
1004 struct elf_metag_link_hash_table
*htab
1005 = (struct elf_metag_link_hash_table
*) obfd
->link
.hash
;
1007 bfd_hash_table_free (&htab
->bstab
);
1008 _bfd_elf_link_hash_table_free (obfd
);
1011 /* Create the derived linker hash table. The Meta ELF port uses the derived
1012 hash table to keep information specific to the Meta ELF linker (without
1013 using static variables). */
1015 static struct bfd_link_hash_table
*
1016 elf_metag_link_hash_table_create (bfd
*abfd
)
1018 struct elf_metag_link_hash_table
*htab
;
1019 size_t amt
= sizeof (*htab
);
1021 htab
= bfd_zmalloc (amt
);
1025 if (!_bfd_elf_link_hash_table_init (&htab
->etab
, abfd
,
1026 metag_link_hash_newfunc
,
1027 sizeof (struct elf_metag_link_hash_entry
),
1034 /* Init the stub hash table too. */
1035 if (!bfd_hash_table_init (&htab
->bstab
, stub_hash_newfunc
,
1036 sizeof (struct elf_metag_stub_hash_entry
)))
1038 _bfd_elf_link_hash_table_free (abfd
);
1041 htab
->etab
.root
.hash_table_free
= elf_metag_link_hash_table_free
;
1043 return &htab
->etab
.root
;
1046 /* Section name for stubs is the associated section name plus this
1048 #define STUB_SUFFIX ".stub"
1050 /* Build a name for an entry in the stub hash table. */
1053 metag_stub_name (const asection
*input_section
,
1054 const asection
*sym_sec
,
1055 const struct elf_metag_link_hash_entry
*hh
,
1056 const Elf_Internal_Rela
*rel
)
1063 len
= 8 + 1 + strlen (hh
->eh
.root
.root
.string
) + 1 + 8 + 1;
1064 stub_name
= bfd_malloc (len
);
1065 if (stub_name
!= NULL
)
1067 sprintf (stub_name
, "%08x_%s+%x",
1068 input_section
->id
& 0xffffffff,
1069 hh
->eh
.root
.root
.string
,
1070 (int) rel
->r_addend
& 0xffffffff);
1075 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
1076 stub_name
= bfd_malloc (len
);
1077 if (stub_name
!= NULL
)
1079 sprintf (stub_name
, "%08x_%x:%x+%x",
1080 input_section
->id
& 0xffffffff,
1081 sym_sec
->id
& 0xffffffff,
1082 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
1083 (int) rel
->r_addend
& 0xffffffff);
1089 /* Look up an entry in the stub hash. Stub entries are cached because
1090 creating the stub name takes a bit of time. */
1092 static struct elf_metag_stub_hash_entry
*
1093 metag_get_stub_entry (const asection
*input_section
,
1094 const asection
*sym_sec
,
1095 struct elf_metag_link_hash_entry
*hh
,
1096 const Elf_Internal_Rela
*rel
,
1097 struct elf_metag_link_hash_table
*htab
)
1099 struct elf_metag_stub_hash_entry
*hsh
;
1100 const asection
*id_sec
;
1102 /* If this input section is part of a group of sections sharing one
1103 stub section, then use the id of the first section in the group.
1104 Stub names need to include a section id, as there may well be
1105 more than one stub used to reach say, printf, and we need to
1106 distinguish between them. */
1107 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
1109 if (hh
!= NULL
&& hh
->hsh_cache
!= NULL
1110 && hh
->hsh_cache
->hh
== hh
1111 && hh
->hsh_cache
->id_sec
== id_sec
)
1113 hsh
= hh
->hsh_cache
;
1119 stub_name
= metag_stub_name (id_sec
, sym_sec
, hh
, rel
);
1120 if (stub_name
== NULL
)
1123 hsh
= metag_stub_hash_lookup (&htab
->bstab
,
1124 stub_name
, FALSE
, FALSE
);
1127 hh
->hsh_cache
= hsh
;
1135 /* Add a new stub entry to the stub hash. Not all fields of the new
1136 stub entry are initialised. */
1138 static struct elf_metag_stub_hash_entry
*
1139 metag_add_stub (const char *stub_name
,
1141 struct elf_metag_link_hash_table
*htab
)
1145 struct elf_metag_stub_hash_entry
*hsh
;
1147 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
1148 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
1149 if (stub_sec
== NULL
)
1151 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
1152 if (stub_sec
== NULL
)
1158 namelen
= strlen (link_sec
->name
);
1159 len
= namelen
+ sizeof (STUB_SUFFIX
);
1160 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
1164 memcpy (s_name
, link_sec
->name
, namelen
);
1165 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
1167 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
1168 if (stub_sec
== NULL
)
1170 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
1172 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
1175 /* Enter this entry into the linker stub hash table. */
1176 hsh
= metag_stub_hash_lookup (&htab
->bstab
, stub_name
,
1180 /* xgettext:c-format */
1181 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
1182 section
->owner
, stub_name
);
1186 hsh
->stub_sec
= stub_sec
;
1187 hsh
->stub_offset
= 0;
1188 hsh
->id_sec
= link_sec
;
1192 /* Check a signed integer value can be represented in the given number
1196 within_signed_range (int value
, unsigned int bits
)
1198 int min_val
= -(1 << (bits
- 1));
1199 int max_val
= (1 << (bits
- 1)) - 1;
1200 return (value
<= max_val
) && (value
>= min_val
);
1203 /* Perform a relocation as part of a final link. */
1205 static bfd_reloc_status_type
1206 metag_final_link_relocate (reloc_howto_type
*howto
,
1208 asection
*input_section
,
1210 Elf_Internal_Rela
*rel
,
1212 struct elf_metag_link_hash_entry
*hh
,
1213 struct elf_metag_link_hash_table
*htab
,
1216 bfd_reloc_status_type r
= bfd_reloc_ok
;
1217 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
1218 int opcode
, op_shift
, op_extended
, l1
, l2
;
1219 bfd_signed_vma srel
, addend
= rel
->r_addend
;
1220 struct elf_metag_stub_hash_entry
*hsh
= NULL
;
1223 /* Find out where we are and where we're going. */
1224 location
= (rel
->r_offset
+
1225 input_section
->output_offset
+
1226 input_section
->output_section
->vma
);
1228 switch (howto
->type
)
1230 case R_METAG_RELBRANCH
:
1231 case R_METAG_RELBRANCH_PLT
:
1232 /* Make it a pc relative offset. */
1233 relocation
-= location
;
1235 case R_METAG_TLS_GD
:
1236 case R_METAG_TLS_IE
:
1237 relocation
-= elf_gp (input_section
->output_section
->owner
);
1243 switch (howto
->type
)
1245 case R_METAG_RELBRANCH_PLT
:
1246 case R_METAG_RELBRANCH
:
1247 opcode
= bfd_get_32 (input_bfd
, hit_data
);
1249 srel
= (bfd_signed_vma
) relocation
;
1252 /* If the branch is out of reach, then redirect the
1253 call to the local stub for this function. */
1254 if (srel
> ((1 << (BRANCH_BITS
+ 1)) - 1) ||
1255 (srel
< - (1 << (BRANCH_BITS
+ 1))))
1257 if (sym_sec
== NULL
)
1260 hsh
= metag_get_stub_entry (input_section
, sym_sec
,
1263 return bfd_reloc_undefined
;
1265 /* Munge up the value and addend so that we call the stub
1266 rather than the procedure directly. */
1267 srel
= (hsh
->stub_offset
1268 + hsh
->stub_sec
->output_offset
1269 + hsh
->stub_sec
->output_section
->vma
);
1275 if (!within_signed_range (srel
, BRANCH_BITS
))
1277 if (hh
&& hh
->eh
.root
.type
== bfd_link_hash_undefweak
)
1280 return bfd_reloc_overflow
;
1283 opcode
&= ~(0x7ffff << 5);
1284 opcode
|= ((srel
& 0x7ffff) << 5);
1286 bfd_put_32 (input_bfd
, opcode
, hit_data
);
1288 case R_METAG_GETSETOFF
:
1289 case R_METAG_GETSET_GOT
:
1290 case R_METAG_GETSET_GOTOFF
:
1291 opcode
= bfd_get_32 (input_bfd
, hit_data
);
1293 srel
= (bfd_signed_vma
) relocation
;
1296 /* Is this a standard or extended GET/SET? */
1297 if ((opcode
& 0xf0000000) == 0xa0000000)
1299 /* Extended GET/SET. */
1306 /* Standard GET/SET. */
1307 l1
= opcode
& 0x01000000;
1308 l2
= opcode
& 0x04000000;
1312 /* Calculate the width of the GET/SET and how much we need to
1313 shift the result by. */
1325 /* GET/SET offsets are scaled by the width of the transfer. */
1326 srel
= srel
>> op_shift
;
1328 /* Extended GET/SET has signed 12 bits of offset, standard has
1332 if (!within_signed_range (srel
, 12))
1334 if (hh
&& hh
->eh
.root
.type
== bfd_link_hash_undefweak
)
1337 return bfd_reloc_overflow
;
1339 opcode
&= ~(0xfff << 7);
1340 opcode
|= ((srel
& 0xfff) << 7);
1344 if (!within_signed_range (srel
, 5))
1346 if (hh
&& hh
->eh
.root
.type
== bfd_link_hash_undefweak
)
1349 return bfd_reloc_overflow
;
1351 opcode
&= ~(0x3f << 8);
1352 opcode
|= ((srel
& 0x3f) << 8);
1355 bfd_put_32 (input_bfd
, opcode
, hit_data
);
1357 case R_METAG_TLS_GD
:
1358 case R_METAG_TLS_LDM
:
1359 opcode
= bfd_get_32 (input_bfd
, hit_data
);
1361 if ((bfd_signed_vma
)relocation
< 0)
1363 /* sign extend immediate */
1364 if ((opcode
& 0xf2000001) == 0x02000000)
1366 /* ADD De.e,Dx.r,#I16 */
1370 return bfd_reloc_overflow
;
1373 bfd_put_32 (input_bfd
, opcode
, hit_data
);
1375 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1376 contents
, rel
->r_offset
,
1377 relocation
, rel
->r_addend
);
1380 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
1381 contents
, rel
->r_offset
,
1382 relocation
, rel
->r_addend
);
1388 /* This is defined because R_METAG_NONE != 0...
1389 See RELOC_AGAINST_DISCARDED_SECTION for details. */
1390 #define METAG_RELOC_AGAINST_DISCARDED_SECTION(info, input_bfd, input_section, \
1391 rel, relend, howto, contents) \
1393 _bfd_clear_contents (howto, input_bfd, input_section, \
1394 contents, rel->r_offset); \
1396 if (bfd_link_relocatable (info) \
1397 && (input_section->flags & SEC_DEBUGGING)) \
1399 /* Only remove relocations in debug sections since other \
1400 sections may require relocations. */ \
1401 Elf_Internal_Shdr *rel_hdr; \
1403 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); \
1405 /* Avoid empty output section. */ \
1406 if (rel_hdr->sh_size > rel_hdr->sh_entsize) \
1408 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1409 rel_hdr = _bfd_elf_single_rel_hdr (input_section); \
1410 rel_hdr->sh_size -= rel_hdr->sh_entsize; \
1412 memmove (rel, rel + 1, (relend - rel) * sizeof (*rel)); \
1414 input_section->reloc_count--; \
1421 rel->r_info = R_METAG_NONE; \
1422 rel->r_addend = 0; \
1426 /* Relocate a META ELF section.
1428 The RELOCATE_SECTION function is called by the new ELF backend linker
1429 to handle the relocations for a section.
1431 The relocs are always passed as Rela structures; if the section
1432 actually uses Rel structures, the r_addend field will always be
1435 This function is responsible for adjusting the section contents as
1436 necessary, and (if using Rela relocs and generating a relocatable
1437 output file) adjusting the reloc addend as necessary.
1439 This function does not have to worry about setting the reloc
1440 address or the reloc symbol index.
1442 LOCAL_SYMS is a pointer to the swapped in local symbols.
1444 LOCAL_SECTIONS is an array giving the section in the input file
1445 corresponding to the st_shndx field of each local symbol.
1447 The global hash table entry for the global symbols can be found
1448 via elf_sym_hashes (input_bfd).
1450 When generating relocatable output, this function must handle
1451 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1452 going to be the section symbol corresponding to the output
1453 section, which means that the addend must be adjusted
1457 elf_metag_relocate_section (bfd
*output_bfd
,
1458 struct bfd_link_info
*info
,
1460 asection
*input_section
,
1462 Elf_Internal_Rela
*relocs
,
1463 Elf_Internal_Sym
*local_syms
,
1464 asection
**local_sections
)
1466 bfd_vma
*local_got_offsets
;
1467 Elf_Internal_Shdr
*symtab_hdr
;
1468 struct elf_link_hash_entry
**eh_syms
;
1469 struct elf_metag_link_hash_table
*htab
;
1470 Elf_Internal_Rela
*rel
;
1471 Elf_Internal_Rela
*relend
;
1474 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
1475 eh_syms
= elf_sym_hashes (input_bfd
);
1476 relend
= relocs
+ input_section
->reloc_count
;
1478 htab
= metag_link_hash_table (info
);
1479 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1483 for (rel
= relocs
; rel
< relend
; rel
++)
1485 reloc_howto_type
*howto
;
1486 unsigned long r_symndx
;
1487 Elf_Internal_Sym
*sym
;
1489 struct elf_metag_link_hash_entry
*hh
;
1491 bfd_reloc_status_type r
;
1495 r_type
= ELF32_R_TYPE (rel
->r_info
);
1497 if (r_type
== R_METAG_GNU_VTINHERIT
1498 || r_type
== R_METAG_GNU_VTENTRY
1499 || r_type
== R_METAG_NONE
)
1502 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1504 howto
= elf_metag_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
1509 if (r_symndx
< symtab_hdr
->sh_info
)
1511 sym
= local_syms
+ r_symndx
;
1512 sec
= local_sections
[r_symndx
];
1513 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1515 name
= bfd_elf_string_from_elf_section
1516 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
1517 name
= name
== NULL
? bfd_section_name (sec
) : name
;
1521 struct elf_link_hash_entry
*eh
;
1522 bfd_boolean unresolved_reloc
, warned
, ignored
;
1524 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1525 r_symndx
, symtab_hdr
, eh_syms
,
1526 eh
, sec
, relocation
,
1527 unresolved_reloc
, warned
, ignored
);
1529 name
= eh
->root
.root
.string
;
1530 hh
= (struct elf_metag_link_hash_entry
*) eh
;
1533 if (sec
!= NULL
&& discarded_section (sec
))
1534 METAG_RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
1535 rel
, relend
, howto
, contents
);
1537 if (bfd_link_relocatable (info
))
1542 case R_METAG_ADDR32
:
1543 case R_METAG_RELBRANCH
:
1544 if ((input_section
->flags
& SEC_ALLOC
) == 0)
1547 if ((bfd_link_pic (info
)
1548 && r_symndx
!= STN_UNDEF
1549 && (input_section
->flags
& SEC_ALLOC
) != 0
1550 && (r_type
!= R_METAG_RELBRANCH
1551 || !SYMBOL_CALLS_LOCAL (info
, &hh
->eh
)))
1552 || (!bfd_link_pic (info
)
1554 && hh
->eh
.dynindx
!= -1
1555 && !hh
->eh
.non_got_ref
1556 && ((hh
->eh
.def_dynamic
1557 && !hh
->eh
.def_regular
)
1558 || hh
->eh
.root
.type
== bfd_link_hash_undefweak
1559 || hh
->eh
.root
.type
== bfd_link_hash_undefined
)))
1561 Elf_Internal_Rela outrel
;
1562 bfd_boolean skip
, relocate
;
1565 /* When generating a shared object, these relocations
1566 are copied into the output file to be resolved at run
1569 sreloc
= elf_section_data (input_section
)->sreloc
;
1570 BFD_ASSERT (sreloc
!= NULL
);
1575 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
1579 if (outrel
.r_offset
== (bfd_vma
) -1)
1581 else if (outrel
.r_offset
== (bfd_vma
) -2)
1582 skip
= TRUE
, relocate
= TRUE
;
1583 outrel
.r_offset
+= (input_section
->output_section
->vma
1584 + input_section
->output_offset
);
1588 memset (&outrel
, 0, sizeof outrel
);
1589 outrel
.r_info
= ELF32_R_INFO (0, R_METAG_NONE
);
1591 else if (r_type
== R_METAG_RELBRANCH
)
1593 BFD_ASSERT (hh
!= NULL
&& hh
->eh
.dynindx
!= -1);
1594 outrel
.r_info
= ELF32_R_INFO (hh
->eh
.dynindx
, r_type
);
1595 outrel
.r_addend
= rel
->r_addend
;
1599 /* h->dynindx may be -1 if this symbol was marked to
1602 || ((info
->symbolic
|| hh
->eh
.dynindx
== -1)
1603 && hh
->eh
.def_regular
))
1606 outrel
.r_info
= ELF32_R_INFO (0, R_METAG_RELATIVE
);
1607 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1611 BFD_ASSERT (hh
->eh
.dynindx
!= -1);
1612 outrel
.r_info
= ELF32_R_INFO (hh
->eh
.dynindx
, r_type
);
1613 outrel
.r_addend
= rel
->r_addend
;
1617 loc
= sreloc
->contents
;
1618 loc
+= sreloc
->reloc_count
* sizeof(Elf32_External_Rela
);
1619 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
1620 ++sreloc
->reloc_count
;
1622 /* If this reloc is against an external symbol, we do
1623 not want to fiddle with the addend. Otherwise, we
1624 need to include the symbol value so that it becomes
1625 an addend for the dynamic reloc. */
1631 case R_METAG_RELBRANCH_PLT
:
1632 /* Relocation is to the entry for this symbol in the
1633 procedure linkage table. */
1638 if (hh
->eh
.forced_local
)
1641 if (hh
->eh
.plt
.offset
== (bfd_vma
) -1 || htab
->etab
.splt
== NULL
)
1643 /* We didn't make a PLT entry for this symbol. This
1644 happens when statically linking PIC code, or when
1645 using -Bsymbolic. */
1649 relocation
= (htab
->etab
.splt
->output_section
->vma
1650 + htab
->etab
.splt
->output_offset
1651 + hh
->eh
.plt
.offset
);
1653 case R_METAG_HI16_GOTPC
:
1654 case R_METAG_LO16_GOTPC
:
1655 BFD_ASSERT (htab
->etab
.sgot
!= NULL
);
1657 relocation
= (htab
->etab
.sgot
->output_section
->vma
+
1658 htab
->etab
.sgot
->output_offset
);
1659 relocation
+= GOT_REG_OFFSET
;
1660 relocation
-= (input_section
->output_section
->vma
1661 + input_section
->output_offset
1664 case R_METAG_HI16_GOTOFF
:
1665 case R_METAG_LO16_GOTOFF
:
1666 case R_METAG_GETSET_GOTOFF
:
1667 BFD_ASSERT (htab
->etab
.sgot
!= NULL
);
1669 relocation
-= (htab
->etab
.sgot
->output_section
->vma
+
1670 htab
->etab
.sgot
->output_offset
);
1671 relocation
-= GOT_REG_OFFSET
;
1673 case R_METAG_GETSET_GOT
:
1676 bfd_boolean do_got
= 0;
1678 /* Relocation is to the entry for this symbol in the
1679 global offset table. */
1684 off
= hh
->eh
.got
.offset
;
1685 dyn
= htab
->etab
.dynamic_sections_created
;
1686 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
1687 bfd_link_pic (info
),
1690 /* If we aren't going to call finish_dynamic_symbol,
1691 then we need to handle initialisation of the .got
1692 entry and create needed relocs here. Since the
1693 offset must always be a multiple of 4, we use the
1694 least significant bit to record whether we have
1695 initialised it already. */
1700 hh
->eh
.got
.offset
|= 1;
1707 /* Local symbol case. */
1708 if (local_got_offsets
== NULL
)
1711 off
= local_got_offsets
[r_symndx
];
1713 /* The offset must always be a multiple of 4. We use
1714 the least significant bit to record whether we have
1715 already generated the necessary reloc. */
1720 local_got_offsets
[r_symndx
] |= 1;
1727 if (bfd_link_pic (info
))
1729 /* Output a dynamic relocation for this GOT entry.
1730 In this case it is relative to the base of the
1731 object because the symbol index is zero. */
1732 Elf_Internal_Rela outrel
;
1734 asection
*s
= htab
->etab
.srelgot
;
1736 outrel
.r_offset
= (off
1737 + htab
->etab
.sgot
->output_offset
1738 + htab
->etab
.sgot
->output_section
->vma
);
1739 outrel
.r_info
= ELF32_R_INFO (0, R_METAG_RELATIVE
);
1740 outrel
.r_addend
= relocation
;
1742 loc
+= s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1743 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1746 bfd_put_32 (output_bfd
, relocation
,
1747 htab
->etab
.sgot
->contents
+ off
);
1750 if (off
>= (bfd_vma
) -2)
1753 relocation
= off
- GOT_REG_OFFSET
;
1756 case R_METAG_TLS_GD
:
1757 case R_METAG_TLS_IE
:
1759 /* XXXMJF There is room here for optimisations. For example
1760 converting from GD->IE, etc. */
1765 if (htab
->etab
.sgot
== NULL
)
1772 dyn
= htab
->etab
.dynamic_sections_created
;
1774 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
1775 bfd_link_pic (info
),
1777 && (!bfd_link_pic (info
)
1778 || !SYMBOL_REFERENCES_LOCAL (info
, &hh
->eh
)))
1780 indx
= hh
->eh
.dynindx
;
1782 off
= hh
->eh
.got
.offset
;
1783 tls_type
= hh
->tls_type
;
1787 /* Local symbol case. */
1788 if (local_got_offsets
== NULL
)
1791 off
= local_got_offsets
[r_symndx
];
1792 tls_type
= metag_elf_local_got_tls_type (input_bfd
) [r_symndx
];
1795 if (tls_type
== GOT_UNKNOWN
)
1802 bfd_boolean need_relocs
= FALSE
;
1803 Elf_Internal_Rela outrel
;
1804 bfd_byte
*loc
= NULL
;
1807 /* The GOT entries have not been initialized yet. Do it
1808 now, and emit any relocations. If both an IE GOT and a
1809 GD GOT are necessary, we emit the GD first. */
1811 if ((bfd_link_pic (info
) || indx
!= 0)
1813 || ELF_ST_VISIBILITY (hh
->eh
.other
) == STV_DEFAULT
1814 || hh
->eh
.root
.type
!= bfd_link_hash_undefweak
))
1817 loc
= htab
->etab
.srelgot
->contents
;
1818 /* FIXME (CAO): Should this be reloc_count++ ? */
1819 loc
+= htab
->etab
.srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
1822 if (tls_type
& GOT_TLS_GD
)
1826 outrel
.r_offset
= (cur_off
1827 + htab
->etab
.sgot
->output_section
->vma
1828 + htab
->etab
.sgot
->output_offset
);
1829 outrel
.r_info
= ELF32_R_INFO (indx
, R_METAG_TLS_DTPMOD
);
1830 outrel
.r_addend
= 0;
1831 bfd_put_32 (output_bfd
, 0, htab
->etab
.sgot
->contents
+ cur_off
);
1833 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1834 htab
->etab
.srelgot
->reloc_count
++;
1835 loc
+= sizeof (Elf32_External_Rela
);
1838 bfd_put_32 (output_bfd
, 0,
1839 htab
->etab
.sgot
->contents
+ cur_off
+ 4);
1842 bfd_put_32 (output_bfd
, 0,
1843 htab
->etab
.sgot
->contents
+ cur_off
+ 4);
1844 outrel
.r_info
= ELF32_R_INFO (indx
,
1845 R_METAG_TLS_DTPOFF
);
1846 outrel
.r_offset
+= 4;
1847 bfd_elf32_swap_reloca_out (output_bfd
,
1849 htab
->etab
.srelgot
->reloc_count
++;
1850 loc
+= sizeof (Elf32_External_Rela
);
1855 /* We don't support changing the TLS model. */
1857 if (bfd_link_pic (info
))
1858 _bfd_error_handler (_("%pB(%pA): multiple TLS models are not supported"),
1859 input_bfd
, input_section
);
1861 _bfd_error_handler (_("%pB(%pA): shared library symbol %s encountered whilst performing a static link"),
1862 input_bfd
, input_section
, name
);
1869 if (tls_type
& GOT_TLS_IE
)
1873 outrel
.r_offset
= (cur_off
1874 + htab
->etab
.sgot
->output_section
->vma
1875 + htab
->etab
.sgot
->output_offset
);
1876 outrel
.r_info
= ELF32_R_INFO (indx
, R_METAG_TLS_TPOFF
);
1879 outrel
.r_addend
= relocation
- dtpoff_base (info
);
1881 outrel
.r_addend
= 0;
1883 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1884 htab
->etab
.srelgot
->reloc_count
++;
1885 loc
+= sizeof (Elf32_External_Rela
);
1888 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1889 htab
->etab
.sgot
->contents
+ cur_off
);
1895 hh
->eh
.got
.offset
|= 1;
1897 local_got_offsets
[r_symndx
] |= 1;
1900 /* Add the base of the GOT to the relocation value. */
1901 relocation
= off
- GOT_REG_OFFSET
;
1906 case R_METAG_TLS_IENONPIC_HI16
:
1907 case R_METAG_TLS_IENONPIC_LO16
:
1908 case R_METAG_TLS_LE_HI16
:
1909 case R_METAG_TLS_LE_LO16
:
1910 if (bfd_link_pic (info
))
1913 /* xgettext:c-format */
1914 (_("%pB(%pA+%#" PRIx64
"): "
1915 "%s relocation not permitted in shared object"),
1916 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
1921 relocation
= tpoff (info
, relocation
);
1923 case R_METAG_TLS_LDO_HI16
:
1924 case R_METAG_TLS_LDO_LO16
:
1925 if (! bfd_link_pic (info
))
1926 relocation
= tpoff (info
, relocation
);
1928 relocation
-= dtpoff_base (info
);
1930 case R_METAG_TLS_LDM
:
1934 if (htab
->etab
.sgot
== NULL
)
1936 off
= htab
->tls_ldm_got
.offset
;
1941 Elf_Internal_Rela outrel
;
1944 outrel
.r_offset
= (off
1945 + htab
->etab
.sgot
->output_section
->vma
1946 + htab
->etab
.sgot
->output_offset
);
1948 outrel
.r_addend
= 0;
1949 outrel
.r_info
= ELF32_R_INFO (0, R_METAG_TLS_DTPMOD
);
1950 loc
= htab
->etab
.srelgot
->contents
;
1951 loc
+= htab
->etab
.srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1952 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1953 htab
->tls_ldm_got
.offset
|= 1;
1956 relocation
= off
- GOT_REG_OFFSET
;
1963 r
= metag_final_link_relocate (howto
, input_bfd
, input_section
,
1964 contents
, rel
, relocation
, hh
, htab
,
1967 if (r
!= bfd_reloc_ok
)
1969 const char * msg
= (const char *) NULL
;
1973 case bfd_reloc_overflow
:
1974 (*info
->callbacks
->reloc_overflow
)
1975 (info
, (hh
? &hh
->eh
.root
: NULL
), name
, howto
->name
,
1976 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
1979 case bfd_reloc_undefined
:
1980 (*info
->callbacks
->undefined_symbol
)
1981 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
1984 case bfd_reloc_outofrange
:
1985 msg
= _("internal error: out of range error");
1988 case bfd_reloc_notsupported
:
1989 msg
= _("internal error: unsupported relocation error");
1992 case bfd_reloc_dangerous
:
1993 msg
= _("internal error: dangerous relocation");
1997 msg
= _("internal error: unknown error");
2002 (*info
->callbacks
->warning
) (info
, msg
, name
, input_bfd
,
2003 input_section
, rel
->r_offset
);
2010 /* Create the .plt and .got sections, and set up our hash table
2011 short-cuts to various dynamic sections. */
2014 elf_metag_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2016 struct elf_metag_link_hash_table
*htab
;
2017 struct elf_link_hash_entry
*eh
;
2018 struct bfd_link_hash_entry
*bh
;
2019 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2021 /* Don't try to create the .plt and .got twice. */
2022 htab
= metag_link_hash_table (info
);
2023 if (htab
->etab
.splt
!= NULL
)
2026 /* Call the generic code to do most of the work. */
2027 if (! _bfd_elf_create_dynamic_sections (abfd
, info
))
2030 /* The header goes at the start of the dynamic .got section, which
2031 is placed after the dynamic .got.plt section. ie. The header is
2032 not necessarily at the start of the output .got section. */
2033 htab
->etab
.sgot
->size
+= 12;
2035 /* Define the symbol __GLOBAL_OFFSET_TABLE__ on the header. */
2037 if (!(_bfd_generic_link_add_one_symbol
2038 (info
, abfd
, "__GLOBAL_OFFSET_TABLE__", BSF_GLOBAL
, htab
->etab
.sgot
,
2039 (bfd_vma
) 0, NULL
, FALSE
, bed
->collect
, &bh
)))
2041 eh
= (struct elf_link_hash_entry
*) bh
;
2042 eh
->def_regular
= 1;
2043 eh
->type
= STT_OBJECT
;
2044 eh
->other
= STV_HIDDEN
;
2046 if (! bfd_link_executable (info
)
2047 && ! bfd_elf_link_record_dynamic_symbol (info
, eh
))
2050 htab
->etab
.hgot
= eh
;
2055 /* Look through the relocs for a section during the first phase, and
2056 calculate needed space in the global offset table, procedure linkage
2057 table, and dynamic reloc sections. At this point we haven't
2058 necessarily read all the input files. */
2061 elf_metag_check_relocs (bfd
*abfd
,
2062 struct bfd_link_info
*info
,
2064 const Elf_Internal_Rela
*relocs
)
2066 Elf_Internal_Shdr
*symtab_hdr
;
2067 struct elf_link_hash_entry
**eh_syms
;
2068 const Elf_Internal_Rela
*rel
;
2069 const Elf_Internal_Rela
*rel_end
;
2070 struct elf_metag_link_hash_table
*htab
;
2073 int tls_type
= GOT_UNKNOWN
, old_tls_type
= GOT_UNKNOWN
;
2075 if (bfd_link_relocatable (info
))
2078 htab
= metag_link_hash_table (info
);
2079 dynobj
= htab
->etab
.dynobj
;
2080 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2081 eh_syms
= elf_sym_hashes (abfd
);
2087 rel_end
= relocs
+ sec
->reloc_count
;
2088 for (rel
= relocs
; rel
< rel_end
; rel
++)
2091 struct elf_metag_link_hash_entry
*hh
;
2092 Elf_Internal_Sym
*isym
;
2093 unsigned long r_symndx
;
2095 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2096 r_type
= ELF32_R_TYPE (rel
->r_info
);
2097 if (r_symndx
< symtab_hdr
->sh_info
)
2099 /* A local symbol. */
2100 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
2111 hh
= (struct elf_metag_link_hash_entry
*)
2112 eh_syms
[r_symndx
- symtab_hdr
->sh_info
];
2113 while (hh
->eh
.root
.type
== bfd_link_hash_indirect
2114 || hh
->eh
.root
.type
== bfd_link_hash_warning
)
2115 hh
= (struct elf_metag_link_hash_entry
*) hh
->eh
.root
.u
.i
.link
;
2118 /* Some relocs require a global offset table. */
2119 if (htab
->etab
.sgot
== NULL
)
2123 case R_METAG_TLS_GD
:
2124 case R_METAG_TLS_LDM
:
2125 case R_METAG_TLS_IE
:
2126 if (bfd_link_pic (info
))
2127 info
->flags
|= DF_STATIC_TLS
;
2130 case R_METAG_HI16_GOTOFF
:
2131 case R_METAG_LO16_GOTOFF
:
2132 case R_METAG_GETSET_GOTOFF
:
2133 case R_METAG_GETSET_GOT
:
2134 case R_METAG_HI16_GOTPC
:
2135 case R_METAG_LO16_GOTPC
:
2137 htab
->etab
.dynobj
= dynobj
= abfd
;
2138 if (!elf_metag_create_dynamic_sections (dynobj
, info
))
2149 case R_METAG_TLS_IE
:
2150 case R_METAG_TLS_GD
:
2151 case R_METAG_GETSET_GOT
:
2155 tls_type
= GOT_NORMAL
;
2157 case R_METAG_TLS_IE
:
2158 tls_type
= GOT_TLS_IE
;
2160 case R_METAG_TLS_GD
:
2161 tls_type
= GOT_TLS_GD
;
2167 hh
->eh
.got
.refcount
+= 1;
2168 old_tls_type
= hh
->tls_type
;
2172 bfd_signed_vma
*local_got_refcounts
;
2174 /* This is a global offset table entry for a local
2176 local_got_refcounts
= elf_local_got_refcounts (abfd
);
2177 if (local_got_refcounts
== NULL
)
2181 size
= symtab_hdr
->sh_info
;
2182 size
*= sizeof (bfd_signed_vma
);
2183 /* Add in space to store the local GOT TLS types. */
2184 size
+= symtab_hdr
->sh_info
;
2185 local_got_refcounts
= ((bfd_signed_vma
*)
2186 bfd_zalloc (abfd
, size
));
2187 if (local_got_refcounts
== NULL
)
2189 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
2190 memset (metag_elf_local_got_tls_type (abfd
),
2191 GOT_UNKNOWN
, symtab_hdr
->sh_info
);
2193 local_got_refcounts
[r_symndx
] += 1;
2194 old_tls_type
= metag_elf_local_got_tls_type (abfd
) [r_symndx
];
2197 if (old_tls_type
!= tls_type
)
2201 hh
->tls_type
= tls_type
;
2205 metag_elf_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
2211 case R_METAG_TLS_LDM
:
2212 metag_link_hash_table (info
)->tls_ldm_got
.refcount
+= 1;
2215 case R_METAG_RELBRANCH_PLT
:
2216 /* This symbol requires a procedure linkage table entry. We
2217 actually build the entry in adjust_dynamic_symbol,
2218 because this might be a case of linking PIC code without
2219 linking in any dynamic objects, in which case we don't
2220 need to generate a procedure linkage table after all. */
2222 /* If this is a local symbol, we resolve it directly without
2223 creating a procedure linkage table entry. */
2227 if (hh
->eh
.forced_local
)
2230 hh
->eh
.needs_plt
= 1;
2231 hh
->eh
.plt
.refcount
+= 1;
2234 case R_METAG_HIADDR16
:
2235 case R_METAG_LOADDR16
:
2236 /* Let's help debug shared library creation. These relocs
2237 cannot be used in shared libs. Don't error out for
2238 sections we don't care about, such as debug sections or
2239 non-constant sections. */
2240 if (bfd_link_pic (info
)
2241 && (sec
->flags
& SEC_ALLOC
) != 0
2242 && (sec
->flags
& SEC_READONLY
) != 0)
2247 name
= hh
->eh
.root
.root
.string
;
2249 name
= bfd_elf_sym_name (abfd
, symtab_hdr
, isym
, NULL
);
2251 /* xgettext:c-format */
2252 (_("%pB: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
2253 abfd
, elf_metag_howto_table
[r_type
].name
, name
);
2254 bfd_set_error (bfd_error_bad_value
);
2259 case R_METAG_ADDR32
:
2260 case R_METAG_RELBRANCH
:
2261 case R_METAG_GETSETOFF
:
2262 if (hh
!= NULL
&& !bfd_link_pic (info
))
2264 hh
->eh
.non_got_ref
= 1;
2265 hh
->eh
.plt
.refcount
+= 1;
2268 /* If we are creating a shared library, and this is a reloc
2269 against a global symbol, or a non PC relative reloc
2270 against a local symbol, then we need to copy the reloc
2271 into the shared library. However, if we are linking with
2272 -Bsymbolic, we do not need to copy a reloc against a
2273 global symbol which is defined in an object we are
2274 including in the link (i.e., DEF_REGULAR is set). At
2275 this point we have not seen all the input files, so it is
2276 possible that DEF_REGULAR is not set now but will be set
2277 later (it is never cleared). We account for that
2278 possibility below by storing information in the
2279 dyn_relocs field of the hash table entry. A similar
2280 situation occurs when creating shared libraries and symbol
2281 visibility changes render the symbol local.
2283 If on the other hand, we are creating an executable, we
2284 may need to keep relocations for symbols satisfied by a
2285 dynamic library if we manage to avoid copy relocs for the
2287 if ((bfd_link_pic (info
)
2288 && (sec
->flags
& SEC_ALLOC
) != 0
2289 && (r_type
!= R_METAG_RELBRANCH
2291 && (! info
->symbolic
2292 || hh
->eh
.root
.type
== bfd_link_hash_defweak
2293 || !hh
->eh
.def_regular
))))
2294 || (!bfd_link_pic (info
)
2295 && (sec
->flags
& SEC_ALLOC
) != 0
2297 && (hh
->eh
.root
.type
== bfd_link_hash_defweak
2298 || !hh
->eh
.def_regular
)))
2300 struct elf_dyn_relocs
*hdh_p
;
2301 struct elf_dyn_relocs
**hdh_head
;
2304 htab
->etab
.dynobj
= dynobj
= abfd
;
2306 /* When creating a shared object, we must copy these
2307 relocs into the output file. We create a reloc
2308 section in dynobj and make room for the reloc. */
2311 sreloc
= _bfd_elf_make_dynamic_reloc_section
2312 (sec
, htab
->etab
.dynobj
, 2, abfd
, /*rela?*/ TRUE
);
2316 bfd_set_error (bfd_error_bad_value
);
2320 elf_section_data (sec
)->sreloc
= sreloc
;
2323 /* If this is a global symbol, we count the number of
2324 relocations we need for this symbol. */
2326 hdh_head
= &hh
->eh
.dyn_relocs
;
2329 /* Track dynamic relocs needed for local syms too. */
2333 sr
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
2337 vpp
= &elf_section_data (sr
)->local_dynrel
;
2338 hdh_head
= (struct elf_dyn_relocs
**) vpp
;
2342 if (hdh_p
== NULL
|| hdh_p
->sec
!= sec
)
2344 hdh_p
= ((struct elf_dyn_relocs
*)
2345 bfd_alloc (dynobj
, sizeof *hdh_p
));
2348 hdh_p
->next
= *hdh_head
;
2352 hdh_p
->pc_count
= 0;
2356 if (ELF32_R_TYPE (rel
->r_info
) == R_METAG_RELBRANCH
)
2357 hdh_p
->pc_count
+= 1;
2361 /* This relocation describes the C++ object vtable hierarchy.
2362 Reconstruct it for later use during GC. */
2363 case R_METAG_GNU_VTINHERIT
:
2364 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, &hh
->eh
,
2369 /* This relocation describes which C++ vtable entries are actually
2370 used. Record for later use during GC. */
2371 case R_METAG_GNU_VTENTRY
:
2372 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, &hh
->eh
, rel
->r_addend
))
2381 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2384 elf_metag_copy_indirect_symbol (struct bfd_link_info
*info
,
2385 struct elf_link_hash_entry
*eh_dir
,
2386 struct elf_link_hash_entry
*eh_ind
)
2388 struct elf_metag_link_hash_entry
*hh_dir
, *hh_ind
;
2390 hh_dir
= metag_elf_hash_entry (eh_dir
);
2391 hh_ind
= metag_elf_hash_entry (eh_ind
);
2393 if (eh_ind
->dyn_relocs
!= NULL
)
2395 if (eh_dir
->dyn_relocs
!= NULL
)
2397 struct elf_dyn_relocs
**hdh_pp
;
2398 struct elf_dyn_relocs
*hdh_p
;
2400 if (eh_ind
->root
.type
== bfd_link_hash_indirect
)
2403 /* Add reloc counts against the weak sym to the strong sym
2404 list. Merge any entries against the same section. */
2405 for (hdh_pp
= &eh_ind
->dyn_relocs
; (hdh_p
= *hdh_pp
) != NULL
; )
2407 struct elf_dyn_relocs
*hdh_q
;
2409 for (hdh_q
= eh_dir
->dyn_relocs
; hdh_q
!= NULL
;
2410 hdh_q
= hdh_q
->next
)
2411 if (hdh_q
->sec
== hdh_p
->sec
)
2413 hdh_q
->pc_count
+= hdh_p
->pc_count
;
2414 hdh_q
->count
+= hdh_p
->count
;
2415 *hdh_pp
= hdh_p
->next
;
2419 hdh_pp
= &hdh_p
->next
;
2421 *hdh_pp
= eh_dir
->dyn_relocs
;
2424 eh_dir
->dyn_relocs
= eh_ind
->dyn_relocs
;
2425 eh_ind
->dyn_relocs
= NULL
;
2428 if (eh_ind
->root
.type
== bfd_link_hash_indirect
2429 && eh_dir
->got
.refcount
<= 0)
2431 hh_dir
->tls_type
= hh_ind
->tls_type
;
2432 hh_ind
->tls_type
= GOT_UNKNOWN
;
2435 _bfd_elf_link_hash_copy_indirect (info
, eh_dir
, eh_ind
);
2438 /* Adjust a symbol defined by a dynamic object and referenced by a
2439 regular object. The current definition is in some section of the
2440 dynamic object, but we're not including those sections. We have to
2441 change the definition to something the rest of the link can
2445 elf_metag_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2446 struct elf_link_hash_entry
*eh
)
2448 struct elf_metag_link_hash_table
*htab
;
2451 /* If this is a function, put it in the procedure linkage table. We
2452 will fill in the contents of the procedure linkage table later,
2453 when we know the address of the .got section. */
2454 if (eh
->type
== STT_FUNC
2457 if (eh
->plt
.refcount
<= 0
2458 || SYMBOL_CALLS_LOCAL (info
, eh
)
2459 || (ELF_ST_VISIBILITY (eh
->other
) != STV_DEFAULT
2460 && eh
->root
.type
== bfd_link_hash_undefweak
))
2462 /* This case can occur if we saw a PLT reloc in an input
2463 file, but the symbol was never referred to by a dynamic
2464 object. In such a case, we don't actually need to build
2465 a procedure linkage table, and we can just do a PCREL
2467 eh
->plt
.offset
= (bfd_vma
) -1;
2474 eh
->plt
.offset
= (bfd_vma
) -1;
2476 /* If this is a weak symbol, and there is a real definition, the
2477 processor independent code will have arranged for us to see the
2478 real definition first, and we can just use the same value. */
2479 if (eh
->is_weakalias
)
2481 struct elf_link_hash_entry
*def
= weakdef (eh
);
2482 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2483 eh
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2484 eh
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2485 eh
->non_got_ref
= def
->non_got_ref
;
2489 /* This is a reference to a symbol defined by a dynamic object which
2490 is not a function. */
2492 /* If we are creating a shared library, we must presume that the
2493 only references to the symbol are via the global offset table.
2494 For such cases we need not do anything here; the relocations will
2495 be handled correctly by relocate_section. */
2496 if (bfd_link_pic (info
))
2499 /* If there are no references to this symbol that do not use the
2500 GOT, we don't need to generate a copy reloc. */
2501 if (!eh
->non_got_ref
)
2504 /* If -z nocopyreloc was given, we won't generate them either. */
2505 if (info
->nocopyreloc
)
2507 eh
->non_got_ref
= 0;
2511 /* If we don't find any dynamic relocs in read-only sections, then
2512 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2513 if (!_bfd_elf_readonly_dynrelocs (eh
))
2515 eh
->non_got_ref
= 0;
2519 /* We must allocate the symbol in our .dynbss section, which will
2520 become part of the .bss section of the executable. There will be
2521 an entry for this symbol in the .dynsym section. The dynamic
2522 object will contain position independent code, so all references
2523 from the dynamic object to this symbol will go through the global
2524 offset table. The dynamic linker will use the .dynsym entry to
2525 determine the address it must put in the global offset table, so
2526 both the dynamic object and the regular object will refer to the
2527 same memory location for the variable. */
2529 htab
= metag_link_hash_table (info
);
2531 /* We must generate a COPY reloc to tell the dynamic linker to
2532 copy the initial value out of the dynamic object and into the
2533 runtime process image. */
2534 if ((eh
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2536 s
= htab
->etab
.sdynrelro
;
2537 srel
= htab
->etab
.sreldynrelro
;
2541 s
= htab
->etab
.sdynbss
;
2542 srel
= htab
->etab
.srelbss
;
2544 if ((eh
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && eh
->size
!= 0)
2546 srel
->size
+= sizeof (Elf32_External_Rela
);
2550 return _bfd_elf_adjust_dynamic_copy (info
, eh
, s
);
2553 /* Allocate space in .plt, .got and associated reloc sections for
2557 allocate_dynrelocs (struct elf_link_hash_entry
*eh
, void *inf
)
2559 struct bfd_link_info
*info
;
2560 struct elf_metag_link_hash_table
*htab
;
2561 struct elf_dyn_relocs
*hdh_p
;
2563 if (eh
->root
.type
== bfd_link_hash_indirect
)
2566 if (eh
->root
.type
== bfd_link_hash_warning
)
2567 eh
= (struct elf_link_hash_entry
*) eh
->root
.u
.i
.link
;
2570 htab
= metag_link_hash_table (info
);
2572 if (htab
->etab
.dynamic_sections_created
2573 && eh
->plt
.refcount
> 0)
2575 /* Make sure this symbol is output as a dynamic symbol.
2576 Undefined weak syms won't yet be marked as dynamic. */
2577 if (eh
->dynindx
== -1
2578 && !eh
->forced_local
)
2580 if (! bfd_elf_link_record_dynamic_symbol (info
, eh
))
2584 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), eh
))
2586 asection
*s
= htab
->etab
.splt
;
2588 /* If this is the first .plt entry, make room for the special
2591 s
->size
+= PLT_ENTRY_SIZE
;
2593 eh
->plt
.offset
= s
->size
;
2595 /* If this symbol is not defined in a regular file, and we are
2596 not generating a shared library, then set the symbol to this
2597 location in the .plt. This is required to make function
2598 pointers compare as equal between the normal executable and
2599 the shared library. */
2600 if (! bfd_link_pic (info
)
2601 && !eh
->def_regular
)
2603 eh
->root
.u
.def
.section
= s
;
2604 eh
->root
.u
.def
.value
= eh
->plt
.offset
;
2607 /* Make room for this entry. */
2608 s
->size
+= PLT_ENTRY_SIZE
;
2610 /* We also need to make an entry in the .got.plt section, which
2611 will be placed in the .got section by the linker script. */
2612 htab
->etab
.sgotplt
->size
+= 4;
2614 /* We also need to make an entry in the .rel.plt section. */
2615 htab
->etab
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2619 eh
->plt
.offset
= (bfd_vma
) -1;
2625 eh
->plt
.offset
= (bfd_vma
) -1;
2629 if (eh
->got
.refcount
> 0)
2633 int tls_type
= metag_elf_hash_entry (eh
)->tls_type
;
2635 /* Make sure this symbol is output as a dynamic symbol.
2636 Undefined weak syms won't yet be marked as dynamic. */
2637 if (eh
->dynindx
== -1
2638 && !eh
->forced_local
)
2640 if (! bfd_elf_link_record_dynamic_symbol (info
, eh
))
2644 s
= htab
->etab
.sgot
;
2646 eh
->got
.offset
= s
->size
;
2648 /* R_METAG_TLS_GD needs 2 consecutive GOT slots. */
2649 if (tls_type
== GOT_TLS_GD
)
2651 dyn
= htab
->etab
.dynamic_sections_created
;
2652 /* R_METAG_TLS_IE needs one dynamic relocation if dynamic,
2653 R_METAG_TLS_GD needs one if local symbol and two if global. */
2654 if ((tls_type
== GOT_TLS_GD
&& eh
->dynindx
== -1)
2655 || (tls_type
== GOT_TLS_IE
&& dyn
))
2656 htab
->etab
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2657 else if (tls_type
== GOT_TLS_GD
)
2658 htab
->etab
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
2659 else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
2660 bfd_link_pic (info
),
2662 htab
->etab
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2665 eh
->got
.offset
= (bfd_vma
) -1;
2667 if (eh
->dyn_relocs
== NULL
)
2670 /* If this is a -Bsymbolic shared link, then we need to discard all
2671 space allocated for dynamic pc-relative relocs against symbols
2672 defined in a regular object. For the normal shared case, discard
2673 space for relocs that have become local due to symbol visibility
2675 if (bfd_link_pic (info
))
2677 if (SYMBOL_CALLS_LOCAL (info
, eh
))
2679 struct elf_dyn_relocs
**hdh_pp
;
2681 for (hdh_pp
= &eh
->dyn_relocs
; (hdh_p
= *hdh_pp
) != NULL
; )
2683 hdh_p
->count
-= hdh_p
->pc_count
;
2684 hdh_p
->pc_count
= 0;
2685 if (hdh_p
->count
== 0)
2686 *hdh_pp
= hdh_p
->next
;
2688 hdh_pp
= &hdh_p
->next
;
2692 /* Also discard relocs on undefined weak syms with non-default
2694 if (eh
->dyn_relocs
!= NULL
2695 && eh
->root
.type
== bfd_link_hash_undefweak
)
2697 if (ELF_ST_VISIBILITY (eh
->other
) != STV_DEFAULT
)
2698 eh
->dyn_relocs
= NULL
;
2700 /* Make sure undefined weak symbols are output as a dynamic
2702 else if (eh
->dynindx
== -1
2703 && !eh
->forced_local
)
2705 if (! bfd_elf_link_record_dynamic_symbol (info
, eh
))
2712 /* For the non-shared case, discard space for relocs against
2713 symbols which turn out to need copy relocs or are not
2715 if (!eh
->non_got_ref
2716 && ((eh
->def_dynamic
2717 && !eh
->def_regular
)
2718 || (htab
->etab
.dynamic_sections_created
2719 && (eh
->root
.type
== bfd_link_hash_undefweak
2720 || eh
->root
.type
== bfd_link_hash_undefined
))))
2722 /* Make sure this symbol is output as a dynamic symbol.
2723 Undefined weak syms won't yet be marked as dynamic. */
2724 if (eh
->dynindx
== -1
2725 && !eh
->forced_local
)
2727 if (! bfd_elf_link_record_dynamic_symbol (info
, eh
))
2731 /* If that succeeded, we know we'll be keeping all the
2733 if (eh
->dynindx
!= -1)
2737 eh
->dyn_relocs
= NULL
;
2743 /* Finally, allocate space. */
2744 for (hdh_p
= eh
->dyn_relocs
; hdh_p
!= NULL
; hdh_p
= hdh_p
->next
)
2746 asection
*sreloc
= elf_section_data (hdh_p
->sec
)->sreloc
;
2747 sreloc
->size
+= hdh_p
->count
* sizeof (Elf32_External_Rela
);
2753 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2754 read-only sections. */
2757 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2761 if (h
->root
.type
== bfd_link_hash_indirect
)
2764 sec
= _bfd_elf_readonly_dynrelocs (h
);
2767 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2769 info
->flags
|= DF_TEXTREL
;
2770 info
->callbacks
->minfo
2771 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2772 sec
->owner
, h
->root
.root
.string
, sec
);
2774 /* Not an error, just cut short the traversal. */
2780 /* Set the sizes of the dynamic sections. */
2783 elf_metag_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2784 struct bfd_link_info
*info
)
2786 struct elf_metag_link_hash_table
*htab
;
2792 htab
= metag_link_hash_table (info
);
2793 dynobj
= htab
->etab
.dynobj
;
2797 if (htab
->etab
.dynamic_sections_created
)
2799 /* Set the contents of the .interp section to the interpreter. */
2800 if (bfd_link_executable (info
) && !info
->nointerp
)
2802 s
= bfd_get_linker_section (dynobj
, ".interp");
2805 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2806 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2810 /* Set up .got offsets for local syms, and space for local dynamic
2812 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2814 bfd_signed_vma
*local_got
;
2815 bfd_signed_vma
*end_local_got
;
2816 bfd_size_type locsymcount
;
2817 Elf_Internal_Shdr
*symtab_hdr
;
2819 char *local_tls_type
;
2821 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2824 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2826 struct elf_dyn_relocs
*hdh_p
;
2828 for (hdh_p
= ((struct elf_dyn_relocs
*)
2829 elf_section_data (s
)->local_dynrel
);
2831 hdh_p
= hdh_p
->next
)
2833 if (!bfd_is_abs_section (hdh_p
->sec
)
2834 && bfd_is_abs_section (hdh_p
->sec
->output_section
))
2836 /* Input section has been discarded, either because
2837 it is a copy of a linkonce section or due to
2838 linker script /DISCARD/, so we'll be discarding
2841 else if (hdh_p
->count
!= 0)
2843 srel
= elf_section_data (hdh_p
->sec
)->sreloc
;
2844 srel
->size
+= hdh_p
->count
* sizeof (Elf32_External_Rela
);
2845 if ((hdh_p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2846 info
->flags
|= DF_TEXTREL
;
2851 local_got
= elf_local_got_refcounts (ibfd
);
2855 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2856 locsymcount
= symtab_hdr
->sh_info
;
2857 end_local_got
= local_got
+ locsymcount
;
2858 local_tls_type
= metag_elf_local_got_tls_type (ibfd
);
2859 s
= htab
->etab
.sgot
;
2860 srel
= htab
->etab
.srelgot
;
2861 for (; local_got
< end_local_got
; ++local_got
)
2865 *local_got
= s
->size
;
2866 s
->size
+= GOT_ENTRY_SIZE
;
2867 /* R_METAG_TLS_GD relocs need 2 consecutive GOT entries. */
2868 if (*local_tls_type
== GOT_TLS_GD
)
2870 if (bfd_link_pic (info
))
2871 srel
->size
+= sizeof (Elf32_External_Rela
);
2874 *local_got
= (bfd_vma
) -1;
2879 if (htab
->tls_ldm_got
.refcount
> 0)
2881 /* Allocate 2 got entries and 1 dynamic reloc for R_METAG_TLS_LDM
2883 htab
->tls_ldm_got
.offset
= htab
->etab
.sgot
->size
;
2884 htab
->etab
.sgot
->size
+= 8;
2885 htab
->etab
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2888 htab
->tls_ldm_got
.offset
= -1;
2890 /* Allocate global sym .plt and .got entries, and space for global
2891 sym dynamic relocs. */
2892 elf_link_hash_traverse (&htab
->etab
, allocate_dynrelocs
, info
);
2894 /* We now have determined the sizes of the various dynamic sections.
2895 Allocate memory for them. */
2897 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2899 bfd_boolean reloc_section
= FALSE
;
2901 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2904 if (s
== htab
->etab
.splt
2905 || s
== htab
->etab
.sgot
2906 || s
== htab
->etab
.sgotplt
2907 || s
== htab
->etab
.sdynbss
2908 || s
== htab
->etab
.sdynrelro
)
2910 /* Strip this section if we don't need it; see the
2913 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
2915 if (s
->size
!= 0 && s
!= htab
->etab
.srelplt
)
2918 /* We use the reloc_count field as a counter if we need
2919 to copy relocs into the output file. */
2921 reloc_section
= TRUE
;
2925 /* It's not one of our sections, so don't allocate space. */
2931 /* If we don't need this section, strip it from the
2932 output file. This is mostly to handle .rela.bss and
2933 .rela.plt. We must create both sections in
2934 create_dynamic_sections, because they must be created
2935 before the linker maps input sections to output
2936 sections. The linker does that before
2937 adjust_dynamic_symbol is called, and it is that
2938 function which decides whether anything needs to go
2939 into these sections. */
2940 s
->flags
|= SEC_EXCLUDE
;
2944 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2947 /* Allocate memory for the section contents. */
2948 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2949 if (s
->contents
== NULL
)
2951 else if (reloc_section
)
2953 unsigned char *contents
= s
->contents
;
2954 Elf32_External_Rela reloc
;
2956 /* Fill the reloc section with a R_METAG_NONE type reloc. */
2957 memset(&reloc
, 0, sizeof(Elf32_External_Rela
));
2958 reloc
.r_info
[0] = R_METAG_NONE
;
2959 for (; contents
< (s
->contents
+ s
->size
);
2960 contents
+= sizeof(Elf32_External_Rela
))
2962 memcpy(contents
, &reloc
, sizeof(Elf32_External_Rela
));
2967 if (htab
->etab
.dynamic_sections_created
)
2969 /* Add some entries to the .dynamic section. We fill in the
2970 values later, in elf_metag_finish_dynamic_sections, but we
2971 must add the entries now so that we get the correct size for
2972 the .dynamic section. The DT_DEBUG entry is filled in by the
2973 dynamic linker and used by the debugger. */
2974 #define add_dynamic_entry(TAG, VAL) \
2975 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2977 if (!add_dynamic_entry (DT_PLTGOT
, 0))
2980 if (bfd_link_executable (info
))
2982 if (!add_dynamic_entry (DT_DEBUG
, 0))
2986 if (htab
->etab
.srelplt
->size
!= 0)
2988 if (!add_dynamic_entry (DT_PLTRELSZ
, 0)
2989 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2990 || !add_dynamic_entry (DT_JMPREL
, 0))
2996 if (!add_dynamic_entry (DT_RELA
, 0)
2997 || !add_dynamic_entry (DT_RELASZ
, 0)
2998 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3001 /* If any dynamic relocs apply to a read-only section,
3002 then we need a DT_TEXTREL entry. */
3003 if ((info
->flags
& DF_TEXTREL
) == 0)
3004 elf_link_hash_traverse (&htab
->etab
, maybe_set_textrel
, info
);
3006 if ((info
->flags
& DF_TEXTREL
) != 0)
3008 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3013 #undef add_dynamic_entry
3018 /* Finish up dynamic symbol handling. We set the contents of various
3019 dynamic sections here. */
3022 elf_metag_finish_dynamic_symbol (bfd
*output_bfd
,
3023 struct bfd_link_info
*info
,
3024 struct elf_link_hash_entry
*eh
,
3025 Elf_Internal_Sym
*sym
)
3027 struct elf_metag_link_hash_table
*htab
;
3028 Elf_Internal_Rela rel
;
3031 htab
= metag_link_hash_table (info
);
3033 if (eh
->plt
.offset
!= (bfd_vma
) -1)
3043 if (eh
->plt
.offset
& 1)
3046 BFD_ASSERT (eh
->dynindx
!= -1);
3048 splt
= htab
->etab
.splt
;
3049 sgot
= htab
->etab
.sgotplt
;
3050 srela
= htab
->etab
.srelplt
;
3051 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
3053 /* Get the index in the procedure linkage table which
3054 corresponds to this symbol. This is the index of this symbol
3055 in all the symbols for which we are making plt entries. The
3056 first entry in the procedure linkage table is reserved. */
3057 plt_index
= eh
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
3059 /* Get the offset into the .got.plt table of the entry that
3060 corresponds to this function. */
3061 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
3063 BFD_ASSERT (got_offset
< (1 << 16));
3065 got_entry
= sgot
->output_section
->vma
3066 + sgot
->output_offset
3069 BFD_ASSERT (plt_index
< (1 << 16));
3071 /* Fill in the entry in the procedure linkage table. */
3072 if (! bfd_link_pic (info
))
3074 bfd_put_32 (output_bfd
,
3076 | (((got_entry
>> 16) & 0xffff) << 3)),
3077 splt
->contents
+ eh
->plt
.offset
);
3078 bfd_put_32 (output_bfd
,
3080 | ((got_entry
& 0xffff) << 3)),
3081 splt
->contents
+ eh
->plt
.offset
+ 4);
3082 bfd_put_32 (output_bfd
, plt_entry
[2],
3083 splt
->contents
+ eh
->plt
.offset
+ 8);
3084 bfd_put_32 (output_bfd
,
3085 (plt_entry
[3] | (plt_index
<< 3)),
3086 splt
->contents
+ eh
->plt
.offset
+ 12);
3087 bfd_put_32 (output_bfd
,
3089 | ((((unsigned int) ((- (eh
->plt
.offset
+ 16)) >> 2)) & 0x7ffff) << 5)),
3090 splt
->contents
+ eh
->plt
.offset
+ 16);
3094 bfd_vma addr
= got_entry
- (splt
->output_section
->vma
+
3095 splt
->output_offset
+ eh
->plt
.offset
);
3097 bfd_put_32 (output_bfd
,
3098 plt_pic_entry
[0] | (((addr
>> 16) & 0xffff) << 3),
3099 splt
->contents
+ eh
->plt
.offset
);
3100 bfd_put_32 (output_bfd
,
3101 plt_pic_entry
[1] | ((addr
& 0xffff) << 3),
3102 splt
->contents
+ eh
->plt
.offset
+ 4);
3103 bfd_put_32 (output_bfd
, plt_pic_entry
[2],
3104 splt
->contents
+ eh
->plt
.offset
+ 8);
3105 bfd_put_32 (output_bfd
,
3106 (plt_pic_entry
[3] | (plt_index
<< 3)),
3107 splt
->contents
+ eh
->plt
.offset
+ 12);
3108 bfd_put_32 (output_bfd
,
3110 + ((((unsigned int) ((- (eh
->plt
.offset
+ 16)) >> 2)) & 0x7ffff) << 5)),
3111 splt
->contents
+ eh
->plt
.offset
+ 16);
3114 /* Fill in the entry in the global offset table. */
3115 bfd_put_32 (output_bfd
,
3116 (splt
->output_section
->vma
3117 + splt
->output_offset
3119 + 12), /* offset within PLT entry */
3120 sgot
->contents
+ got_offset
);
3122 /* Fill in the entry in the .rela.plt section. */
3123 rel
.r_offset
= (sgot
->output_section
->vma
3124 + sgot
->output_offset
3126 rel
.r_info
= ELF32_R_INFO (eh
->dynindx
, R_METAG_JMP_SLOT
);
3128 loc
= htab
->etab
.srelplt
->contents
;
3129 loc
+= plt_index
* sizeof(Elf32_External_Rela
);
3130 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
3132 if (!eh
->def_regular
)
3134 /* Mark the symbol as undefined, rather than as defined in
3135 the .plt section. Leave the value alone. */
3136 sym
->st_shndx
= SHN_UNDEF
;
3140 if (eh
->got
.offset
!= (bfd_vma
) -1
3141 && (metag_elf_hash_entry (eh
)->tls_type
& GOT_TLS_GD
) == 0
3142 && (metag_elf_hash_entry (eh
)->tls_type
& GOT_TLS_IE
) == 0)
3144 /* This symbol has an entry in the global offset table. Set it
3147 rel
.r_offset
= ((eh
->got
.offset
&~ (bfd_vma
) 1)
3148 + htab
->etab
.sgot
->output_offset
3149 + htab
->etab
.sgot
->output_section
->vma
);
3151 /* If this is a -Bsymbolic link and the symbol is defined
3152 locally or was forced to be local because of a version file,
3153 we just want to emit a RELATIVE reloc. The entry in the
3154 global offset table will already have been initialized in the
3155 relocate_section function. */
3156 if (bfd_link_pic (info
)
3157 && (info
->symbolic
|| eh
->dynindx
== -1)
3160 rel
.r_info
= ELF32_R_INFO (0, R_METAG_RELATIVE
);
3161 rel
.r_addend
= (eh
->root
.u
.def
.value
3162 + eh
->root
.u
.def
.section
->output_offset
3163 + eh
->root
.u
.def
.section
->output_section
->vma
);
3167 if ((eh
->got
.offset
& 1) != 0)
3169 bfd_put_32 (output_bfd
, 0, htab
->etab
.sgot
->contents
+ eh
->got
.offset
);
3170 rel
.r_info
= ELF32_R_INFO (eh
->dynindx
, R_METAG_GLOB_DAT
);
3174 loc
= htab
->etab
.srelgot
->contents
;
3175 loc
+= htab
->etab
.srelgot
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3176 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
3183 /* This symbol needs a copy reloc. Set it up. */
3185 if (! (eh
->dynindx
!= -1
3186 && (eh
->root
.type
== bfd_link_hash_defined
3187 || eh
->root
.type
== bfd_link_hash_defweak
)))
3190 rel
.r_offset
= (eh
->root
.u
.def
.value
3191 + eh
->root
.u
.def
.section
->output_offset
3192 + eh
->root
.u
.def
.section
->output_section
->vma
);
3194 rel
.r_info
= ELF32_R_INFO (eh
->dynindx
, R_METAG_COPY
);
3195 if (eh
->root
.u
.def
.section
== htab
->etab
.sdynrelro
)
3196 s
= htab
->etab
.sreldynrelro
;
3198 s
= htab
->etab
.srelbss
;
3199 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
3200 bfd_elf32_swap_reloca_out (output_bfd
, &rel
, loc
);
3203 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3204 if (eh
->root
.root
.string
[0] == '_'
3205 && (strcmp (eh
->root
.root
.string
, "_DYNAMIC") == 0
3206 || eh
== htab
->etab
.hgot
))
3208 sym
->st_shndx
= SHN_ABS
;
3214 /* Set the Meta ELF ABI version. */
3217 elf_metag_init_file_header (bfd
*abfd
, struct bfd_link_info
*link_info
)
3219 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
3221 if (!_bfd_elf_init_file_header (abfd
, link_info
))
3224 i_ehdrp
= elf_elfheader (abfd
);
3225 i_ehdrp
->e_ident
[EI_ABIVERSION
] = METAG_ELF_ABI_VERSION
;
3229 /* Used to decide how to sort relocs in an optimal manner for the
3230 dynamic linker, before writing them out. */
3232 static enum elf_reloc_type_class
3233 elf_metag_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3234 const asection
*rel_sec ATTRIBUTE_UNUSED
,
3235 const Elf_Internal_Rela
*rela
)
3237 switch ((int) ELF32_R_TYPE (rela
->r_info
))
3239 case R_METAG_RELATIVE
:
3240 return reloc_class_relative
;
3241 case R_METAG_JMP_SLOT
:
3242 return reloc_class_plt
;
3244 return reloc_class_copy
;
3246 return reloc_class_normal
;
3250 /* Finish up the dynamic sections. */
3253 elf_metag_finish_dynamic_sections (bfd
*output_bfd
,
3254 struct bfd_link_info
*info
)
3257 struct elf_metag_link_hash_table
*htab
;
3260 htab
= metag_link_hash_table (info
);
3261 dynobj
= htab
->etab
.dynobj
;
3263 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
3265 if (htab
->etab
.dynamic_sections_created
)
3268 Elf32_External_Dyn
*dyncon
, *dynconend
;
3273 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
3274 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
3275 for (; dyncon
< dynconend
; dyncon
++)
3277 Elf_Internal_Dyn dyn
;
3280 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
3288 s
= htab
->etab
.sgot
;
3289 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3290 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3294 s
= htab
->etab
.srelplt
;
3295 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
3296 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3300 s
= htab
->etab
.srelplt
;
3301 dyn
.d_un
.d_val
= s
->size
;
3302 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
3308 /* Fill in the first entry in the procedure linkage table. */
3309 splt
= htab
->etab
.splt
;
3310 if (splt
&& splt
->size
> 0)
3313 /* addr = .got + 4 */
3314 addr
= (htab
->etab
.sgot
->output_section
->vma
3315 + htab
->etab
.sgot
->output_offset
+ 4);
3316 if (bfd_link_pic (info
))
3318 addr
-= splt
->output_section
->vma
+ splt
->output_offset
;
3319 bfd_put_32 (output_bfd
,
3320 plt0_pic_entry
[0] | (((addr
>> 16) & 0xffff) << 3),
3322 bfd_put_32 (output_bfd
,
3323 plt0_pic_entry
[1] | ((addr
& 0xffff) << 3),
3324 splt
->contents
+ 4);
3325 bfd_put_32 (output_bfd
, plt0_pic_entry
[2], splt
->contents
+ 8);
3326 bfd_put_32 (output_bfd
, plt0_pic_entry
[3], splt
->contents
+ 12);
3327 bfd_put_32 (output_bfd
, plt0_pic_entry
[4], splt
->contents
+ 16);
3331 bfd_put_32 (output_bfd
,
3332 plt0_entry
[0] | (((addr
>> 16) & 0xffff) << 3),
3334 bfd_put_32 (output_bfd
,
3335 plt0_entry
[1] | ((addr
& 0xffff) << 3),
3336 splt
->contents
+ 4);
3337 bfd_put_32 (output_bfd
, plt0_entry
[2], splt
->contents
+ 8);
3338 bfd_put_32 (output_bfd
, plt0_entry
[3], splt
->contents
+ 12);
3339 bfd_put_32 (output_bfd
, plt0_entry
[4], splt
->contents
+ 16);
3342 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
3347 if (htab
->etab
.sgot
!= NULL
&& htab
->etab
.sgot
->size
!= 0)
3349 /* Fill in the first entry in the global offset table.
3350 We use it to point to our dynamic section, if we have one. */
3351 bfd_put_32 (output_bfd
,
3352 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0,
3353 htab
->etab
.sgot
->contents
);
3355 /* The second entry is reserved for use by the dynamic linker. */
3356 memset (htab
->etab
.sgot
->contents
+ GOT_ENTRY_SIZE
, 0, GOT_ENTRY_SIZE
);
3358 /* Set .got entry size. */
3359 elf_section_data (htab
->etab
.sgot
->output_section
)
3360 ->this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
3366 /* Return the section that should be marked against GC for a given
3370 elf_metag_gc_mark_hook (asection
*sec
,
3371 struct bfd_link_info
*info
,
3372 Elf_Internal_Rela
*rela
,
3373 struct elf_link_hash_entry
*hh
,
3374 Elf_Internal_Sym
*sym
)
3377 switch ((unsigned int) ELF32_R_TYPE (rela
->r_info
))
3379 case R_METAG_GNU_VTINHERIT
:
3380 case R_METAG_GNU_VTENTRY
:
3384 return _bfd_elf_gc_mark_hook (sec
, info
, rela
, hh
, sym
);
3387 /* Determine the type of stub needed, if any, for a call. */
3389 static enum elf_metag_stub_type
3390 metag_type_of_stub (asection
*input_sec
,
3391 const Elf_Internal_Rela
*rel
,
3392 struct elf_metag_link_hash_entry
*hh
,
3393 bfd_vma destination
,
3394 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
3397 bfd_vma branch_offset
;
3398 bfd_vma max_branch_offset
;
3401 !(hh
->eh
.root
.type
== bfd_link_hash_defined
3402 || hh
->eh
.root
.type
== bfd_link_hash_defweak
))
3403 return metag_stub_none
;
3405 /* Determine where the call point is. */
3406 location
= (input_sec
->output_offset
3407 + input_sec
->output_section
->vma
3410 branch_offset
= destination
- location
;
3412 /* Determine if a long branch stub is needed. Meta branch offsets
3413 are signed 19 bits 4 byte aligned. */
3414 max_branch_offset
= (1 << (BRANCH_BITS
-1)) << 2;
3416 if (branch_offset
+ max_branch_offset
>= 2*max_branch_offset
)
3418 if (bfd_link_pic (info
))
3419 return metag_stub_long_branch_shared
;
3421 return metag_stub_long_branch
;
3424 return metag_stub_none
;
3427 #define MOVT_A0_3 0x82180005
3428 #define JUMP_A0_3 0xac180003
3430 #define MOVT_A1LBP 0x83080005
3431 #define ADD_A1LBP 0x83080000
3433 #define ADDT_A0_3_CPC 0x82980001
3434 #define ADD_A0_3_A0_3 0x82180000
3435 #define MOV_PC_A0_3 0xa3180ca0
3438 metag_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
3440 struct elf_metag_stub_hash_entry
*hsh
;
3446 struct bfd_link_info
*info
;
3448 /* Massage our args to the form they really have. */
3449 hsh
= (struct elf_metag_stub_hash_entry
*) gen_entry
;
3450 info
= (struct bfd_link_info
*) in_arg
;
3452 /* Fail if the target section could not be assigned to an output
3453 section. The user should fix his linker script. */
3454 if (hsh
->target_section
->output_section
== NULL
3455 && info
->non_contiguous_regions
)
3456 info
->callbacks
->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3457 "Retry without --enable-non-contiguous-regions.\n"),
3458 hsh
->target_section
);
3460 stub_sec
= hsh
->stub_sec
;
3462 /* Make a note of the offset within the stubs for this entry. */
3463 hsh
->stub_offset
= stub_sec
->size
;
3464 loc
= stub_sec
->contents
+ hsh
->stub_offset
;
3466 stub_bfd
= stub_sec
->owner
;
3468 switch (hsh
->stub_type
)
3470 case metag_stub_long_branch_shared
:
3471 /* A PIC long branch stub is an ADDT and an ADD instruction used to
3472 calculate the jump target using A0.3 as a temporary. Then a MOV
3473 to PC carries out the jump. */
3474 sym_value
= (hsh
->target_value
3475 + hsh
->target_section
->output_offset
3476 + hsh
->target_section
->output_section
->vma
3479 sym_value
-= (hsh
->stub_offset
3480 + stub_sec
->output_offset
3481 + stub_sec
->output_section
->vma
);
3483 bfd_put_32 (stub_bfd
, ADDT_A0_3_CPC
| (((sym_value
>> 16) & 0xffff) << 3),
3486 bfd_put_32 (stub_bfd
, ADD_A0_3_A0_3
| ((sym_value
& 0xffff) << 3),
3489 bfd_put_32 (stub_bfd
, MOV_PC_A0_3
, loc
+ 8);
3493 case metag_stub_long_branch
:
3494 /* A standard long branch stub is a MOVT instruction followed by a
3495 JUMP instruction using the A0.3 register as a temporary. This is
3496 the same method used by the LDLK linker (patch.c). */
3497 sym_value
= (hsh
->target_value
3498 + hsh
->target_section
->output_offset
3499 + hsh
->target_section
->output_section
->vma
3502 bfd_put_32 (stub_bfd
, MOVT_A0_3
| (((sym_value
>> 16) & 0xffff) << 3),
3505 bfd_put_32 (stub_bfd
, JUMP_A0_3
| ((sym_value
& 0xffff) << 3), loc
+ 4);
3514 stub_sec
->size
+= size
;
3518 /* As above, but don't actually build the stub. Just bump offset so
3519 we know stub section sizes. */
3522 metag_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg ATTRIBUTE_UNUSED
)
3524 struct elf_metag_stub_hash_entry
*hsh
;
3527 /* Massage our args to the form they really have. */
3528 hsh
= (struct elf_metag_stub_hash_entry
*) gen_entry
;
3530 if (hsh
->stub_type
== metag_stub_long_branch
)
3532 else if (hsh
->stub_type
== metag_stub_long_branch_shared
)
3535 hsh
->stub_sec
->size
+= size
;
3539 /* Set up various things so that we can make a list of input sections
3540 for each output section included in the link. Returns -1 on error,
3541 0 when no stubs will be needed, and 1 on success. */
3544 elf_metag_setup_section_lists (bfd
*output_bfd
, struct bfd_link_info
*info
)
3547 unsigned int bfd_count
;
3548 unsigned int top_id
, top_index
;
3550 asection
**input_list
, **list
;
3552 struct elf_metag_link_hash_table
*htab
= metag_link_hash_table (info
);
3554 /* Count the number of input BFDs and find the top input section id. */
3555 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3557 input_bfd
= input_bfd
->link
.next
)
3560 for (section
= input_bfd
->sections
;
3562 section
= section
->next
)
3564 if (top_id
< section
->id
)
3565 top_id
= section
->id
;
3569 htab
->bfd_count
= bfd_count
;
3571 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3572 htab
->stub_group
= bfd_zmalloc (amt
);
3573 if (htab
->stub_group
== NULL
)
3576 /* We can't use output_bfd->section_count here to find the top output
3577 section index as some sections may have been removed, and
3578 strip_excluded_output_sections doesn't renumber the indices. */
3579 for (section
= output_bfd
->sections
, top_index
= 0;
3581 section
= section
->next
)
3583 if (top_index
< section
->index
)
3584 top_index
= section
->index
;
3587 htab
->top_index
= top_index
;
3588 amt
= sizeof (asection
*) * (top_index
+ 1);
3589 input_list
= bfd_malloc (amt
);
3590 htab
->input_list
= input_list
;
3591 if (input_list
== NULL
)
3594 /* For sections we aren't interested in, mark their entries with a
3595 value we can check later. */
3596 list
= input_list
+ top_index
;
3598 *list
= bfd_abs_section_ptr
;
3599 while (list
-- != input_list
);
3601 for (section
= output_bfd
->sections
;
3603 section
= section
->next
)
3605 /* FIXME: This is a bit of hack. Currently our .ctors and .dtors
3606 * have PC relative relocs in them but no code flag set. */
3607 if (((section
->flags
& SEC_CODE
) != 0) ||
3608 strcmp(".ctors", section
->name
) ||
3609 strcmp(".dtors", section
->name
))
3610 input_list
[section
->index
] = NULL
;
3616 /* The linker repeatedly calls this function for each input section,
3617 in the order that input sections are linked into output sections.
3618 Build lists of input sections to determine groupings between which
3619 we may insert linker stubs. */
3622 elf_metag_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
3624 struct elf_metag_link_hash_table
*htab
= metag_link_hash_table (info
);
3626 if (isec
->output_section
->index
<= htab
->top_index
)
3628 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3629 if (*list
!= bfd_abs_section_ptr
)
3631 /* Steal the link_sec pointer for our list. */
3632 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3633 /* This happens to make the list in reverse order,
3634 which is what we want. */
3635 PREV_SEC (isec
) = *list
;
3641 /* See whether we can group stub sections together. Grouping stub
3642 sections may result in fewer stubs. More importantly, we need to
3643 put all .init* and .fini* stubs at the beginning of the .init or
3644 .fini output sections respectively, because glibc splits the
3645 _init and _fini functions into multiple parts. Putting a stub in
3646 the middle of a function is not a good idea. */
3649 group_sections (struct elf_metag_link_hash_table
*htab
,
3650 bfd_size_type stub_group_size
,
3651 bfd_boolean stubs_always_before_branch
)
3653 asection
**list
= htab
->input_list
+ htab
->top_index
;
3656 asection
*tail
= *list
;
3657 if (tail
== bfd_abs_section_ptr
)
3659 while (tail
!= NULL
)
3663 bfd_size_type total
;
3664 bfd_boolean big_sec
;
3668 big_sec
= total
>= stub_group_size
;
3670 while ((prev
= PREV_SEC (curr
)) != NULL
3671 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3675 /* OK, the size from the start of CURR to the end is less
3676 than stub_group_size bytes and thus can be handled by one stub
3677 section. (or the tail section is itself larger than
3678 stub_group_size bytes, in which case we may be toast.)
3679 We should really be keeping track of the total size of
3680 stubs added here, as stubs contribute to the final output
3684 prev
= PREV_SEC (tail
);
3685 /* Set up this stub group. */
3686 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3688 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3690 /* But wait, there's more! Input sections up to stub_group_size
3691 bytes before the stub section can be handled by it too.
3692 Don't do this if we have a really large section after the
3693 stubs, as adding more stubs increases the chance that
3694 branches may not reach into the stub section. */
3695 if (!stubs_always_before_branch
&& !big_sec
)
3699 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3703 prev
= PREV_SEC (tail
);
3704 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3710 while (list
-- != htab
->input_list
);
3711 free (htab
->input_list
);
3715 /* Read in all local syms for all input bfds.
3716 Returns -1 on error, 0 otherwise. */
3719 get_local_syms (bfd
*output_bfd ATTRIBUTE_UNUSED
, bfd
*input_bfd
,
3720 struct bfd_link_info
*info
)
3722 unsigned int bfd_indx
;
3723 Elf_Internal_Sym
*local_syms
, **all_local_syms
;
3724 int stub_changed
= 0;
3725 struct elf_metag_link_hash_table
*htab
= metag_link_hash_table (info
);
3727 /* We want to read in symbol extension records only once. To do this
3728 we need to read in the local symbols in parallel and save them for
3729 later use; so hold pointers to the local symbols in an array. */
3730 size_t amt
= sizeof (Elf_Internal_Sym
*) * htab
->bfd_count
;
3731 all_local_syms
= bfd_zmalloc (amt
);
3732 htab
->all_local_syms
= all_local_syms
;
3733 if (all_local_syms
== NULL
)
3736 /* Walk over all the input BFDs, swapping in local symbols. */
3739 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
3741 Elf_Internal_Shdr
*symtab_hdr
;
3743 /* We'll need the symbol table in a second. */
3744 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3745 if (symtab_hdr
->sh_info
== 0)
3748 /* We need an array of the local symbols attached to the input bfd. */
3749 local_syms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3750 if (local_syms
== NULL
)
3752 local_syms
= bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3753 symtab_hdr
->sh_info
, 0,
3755 /* Cache them for elf_link_input_bfd. */
3756 symtab_hdr
->contents
= (unsigned char *) local_syms
;
3758 if (local_syms
== NULL
)
3761 all_local_syms
[bfd_indx
] = local_syms
;
3764 return stub_changed
;
3767 /* Determine and set the size of the stub section for a final link.
3769 The basic idea here is to examine all the relocations looking for
3770 PC-relative calls to a target that is unreachable with a "CALLR"
3773 /* See elf32-hppa.c and elf64-ppc.c. */
3776 elf_metag_size_stubs(bfd
*output_bfd
, bfd
*stub_bfd
,
3777 struct bfd_link_info
*info
,
3778 bfd_signed_vma group_size
,
3779 asection
* (*add_stub_section
) (const char *, asection
*),
3780 void (*layout_sections_again
) (void))
3782 bfd_size_type stub_group_size
;
3783 bfd_boolean stubs_always_before_branch
;
3784 bfd_boolean stub_changed
;
3785 struct elf_metag_link_hash_table
*htab
= metag_link_hash_table (info
);
3787 /* Stash our params away. */
3788 htab
->stub_bfd
= stub_bfd
;
3789 htab
->add_stub_section
= add_stub_section
;
3790 htab
->layout_sections_again
= layout_sections_again
;
3791 stubs_always_before_branch
= group_size
< 0;
3793 stub_group_size
= -group_size
;
3795 stub_group_size
= group_size
;
3796 if (stub_group_size
== 1)
3798 /* Default values. */
3799 /* FIXME: not sure what these values should be */
3800 if (stubs_always_before_branch
)
3802 stub_group_size
= (1 << BRANCH_BITS
);
3806 stub_group_size
= (1 << BRANCH_BITS
);
3810 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
3812 switch (get_local_syms (output_bfd
, info
->input_bfds
, info
))
3815 if (htab
->all_local_syms
)
3816 goto error_ret_free_local
;
3820 stub_changed
= FALSE
;
3824 stub_changed
= TRUE
;
3831 unsigned int bfd_indx
;
3834 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
3836 input_bfd
= input_bfd
->link
.next
, bfd_indx
++)
3838 Elf_Internal_Shdr
*symtab_hdr
;
3840 Elf_Internal_Sym
*local_syms
;
3842 /* We'll need the symbol table in a second. */
3843 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3844 if (symtab_hdr
->sh_info
== 0)
3847 local_syms
= htab
->all_local_syms
[bfd_indx
];
3849 /* Walk over each section attached to the input bfd. */
3850 for (section
= input_bfd
->sections
;
3852 section
= section
->next
)
3854 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3856 /* If there aren't any relocs, then there's nothing more
3858 if ((section
->flags
& SEC_RELOC
) == 0
3859 || section
->reloc_count
== 0)
3862 /* If this section is a link-once section that will be
3863 discarded, then don't create any stubs. */
3864 if (section
->output_section
== NULL
3865 || section
->output_section
->owner
!= output_bfd
)
3868 /* Get the relocs. */
3870 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
3872 if (internal_relocs
== NULL
)
3873 goto error_ret_free_local
;
3875 /* Now examine each relocation. */
3876 irela
= internal_relocs
;
3877 irelaend
= irela
+ section
->reloc_count
;
3878 for (; irela
< irelaend
; irela
++)
3880 unsigned int r_type
, r_indx
;
3881 enum elf_metag_stub_type stub_type
;
3882 struct elf_metag_stub_hash_entry
*hsh
;
3885 bfd_vma destination
;
3886 struct elf_metag_link_hash_entry
*hh
;
3888 const asection
*id_sec
;
3890 r_type
= ELF32_R_TYPE (irela
->r_info
);
3891 r_indx
= ELF32_R_SYM (irela
->r_info
);
3893 if (r_type
>= (unsigned int) R_METAG_MAX
)
3895 bfd_set_error (bfd_error_bad_value
);
3896 error_ret_free_internal
:
3897 if (elf_section_data (section
)->relocs
== NULL
)
3898 free (internal_relocs
);
3899 goto error_ret_free_local
;
3902 /* Only look for stubs on CALLR and B instructions. */
3903 if (!(r_type
== (unsigned int) R_METAG_RELBRANCH
||
3904 r_type
== (unsigned int) R_METAG_RELBRANCH_PLT
))
3907 /* Now determine the call target, its name, value,
3913 if (r_indx
< symtab_hdr
->sh_info
)
3915 /* It's a local symbol. */
3916 Elf_Internal_Sym
*sym
;
3917 Elf_Internal_Shdr
*hdr
;
3920 sym
= local_syms
+ r_indx
;
3921 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
3922 sym_value
= sym
->st_value
;
3923 shndx
= sym
->st_shndx
;
3924 if (shndx
< elf_numsections (input_bfd
))
3926 hdr
= elf_elfsections (input_bfd
)[shndx
];
3927 sym_sec
= hdr
->bfd_section
;
3928 destination
= (sym_value
+ irela
->r_addend
3929 + sym_sec
->output_offset
3930 + sym_sec
->output_section
->vma
);
3935 /* It's an external symbol. */
3938 e_indx
= r_indx
- symtab_hdr
->sh_info
;
3939 hh
= ((struct elf_metag_link_hash_entry
*)
3940 elf_sym_hashes (input_bfd
)[e_indx
]);
3942 while (hh
->eh
.root
.type
== bfd_link_hash_indirect
3943 || hh
->eh
.root
.type
== bfd_link_hash_warning
)
3944 hh
= ((struct elf_metag_link_hash_entry
*)
3945 hh
->eh
.root
.u
.i
.link
);
3947 if (hh
->eh
.root
.type
== bfd_link_hash_defined
3948 || hh
->eh
.root
.type
== bfd_link_hash_defweak
)
3950 sym_sec
= hh
->eh
.root
.u
.def
.section
;
3951 sym_value
= hh
->eh
.root
.u
.def
.value
;
3952 if (hh
->eh
.plt
.offset
!= (bfd_vma
) -1
3953 && hh
->eh
.dynindx
!= -1
3954 && r_type
== (unsigned int) R_METAG_RELBRANCH_PLT
)
3956 sym_sec
= htab
->etab
.splt
;
3957 sym_value
= hh
->eh
.plt
.offset
;
3960 if (sym_sec
->output_section
!= NULL
)
3961 destination
= (sym_value
+ irela
->r_addend
3962 + sym_sec
->output_offset
3963 + sym_sec
->output_section
->vma
);
3967 else if (hh
->eh
.root
.type
== bfd_link_hash_undefweak
)
3969 if (! bfd_link_pic (info
))
3972 else if (hh
->eh
.root
.type
== bfd_link_hash_undefined
)
3974 if (! (info
->unresolved_syms_in_objects
== RM_IGNORE
3975 && (ELF_ST_VISIBILITY (hh
->eh
.other
)
3981 bfd_set_error (bfd_error_bad_value
);
3982 goto error_ret_free_internal
;
3986 /* Determine what (if any) linker stub is needed. */
3987 stub_type
= metag_type_of_stub (section
, irela
, hh
,
3989 if (stub_type
== metag_stub_none
)
3992 /* Support for grouping stub sections. */
3993 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
3995 /* Get the name of this stub. */
3996 stub_name
= metag_stub_name (id_sec
, sym_sec
, hh
, irela
);
3998 goto error_ret_free_internal
;
4000 hsh
= metag_stub_hash_lookup (&htab
->bstab
,
4005 /* The proper stub has already been created. */
4010 hsh
= metag_add_stub (stub_name
, section
, htab
);
4014 goto error_ret_free_internal
;
4016 hsh
->target_value
= sym_value
;
4017 hsh
->target_section
= sym_sec
;
4018 hsh
->stub_type
= stub_type
;
4020 hsh
->addend
= irela
->r_addend
;
4021 stub_changed
= TRUE
;
4024 /* We're done with the internal relocs, free them. */
4025 if (elf_section_data (section
)->relocs
== NULL
)
4026 free (internal_relocs
);
4033 /* OK, we've added some stubs. Find out the new size of the
4035 for (stub_sec
= htab
->stub_bfd
->sections
;
4037 stub_sec
= stub_sec
->next
)
4040 bfd_hash_traverse (&htab
->bstab
, metag_size_one_stub
, htab
);
4042 /* Ask the linker to do its stuff. */
4043 (*htab
->layout_sections_again
) ();
4044 stub_changed
= FALSE
;
4047 free (htab
->all_local_syms
);
4050 error_ret_free_local
:
4051 free (htab
->all_local_syms
);
4055 /* Build all the stubs associated with the current output file. The
4056 stubs are kept in a hash table attached to the main linker hash
4057 table. This function is called via metagelf_finish in the linker. */
4060 elf_metag_build_stubs (struct bfd_link_info
*info
)
4063 struct bfd_hash_table
*table
;
4064 struct elf_metag_link_hash_table
*htab
;
4066 htab
= metag_link_hash_table (info
);
4068 for (stub_sec
= htab
->stub_bfd
->sections
;
4070 stub_sec
= stub_sec
->next
)
4074 /* Allocate memory to hold the linker stubs. */
4075 size
= stub_sec
->size
;
4076 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4077 if (stub_sec
->contents
== NULL
&& size
!= 0)
4082 /* Build the stubs as directed by the stub hash table. */
4083 table
= &htab
->bstab
;
4084 bfd_hash_traverse (table
, metag_build_one_stub
, info
);
4089 /* Return TRUE if SYM represents a local label symbol. */
4092 elf_metag_is_local_label_name (bfd
*abfd ATTRIBUTE_UNUSED
, const char *name
)
4094 if (name
[0] == '$' && name
[1] == 'L')
4096 return _bfd_elf_is_local_label_name (abfd
, name
);
4099 /* Return address for Ith PLT stub in section PLT, for relocation REL
4100 or (bfd_vma) -1 if it should not be included. */
4103 elf_metag_plt_sym_val (bfd_vma i
, const asection
*plt
,
4104 const arelent
*rel ATTRIBUTE_UNUSED
)
4106 return plt
->vma
+ (i
+ 1) * PLT_ENTRY_SIZE
;
4109 #define ELF_ARCH bfd_arch_metag
4110 #define ELF_TARGET_ID METAG_ELF_DATA
4111 #define ELF_MACHINE_CODE EM_METAG
4112 #define ELF_MINPAGESIZE 0x1000
4113 #define ELF_MAXPAGESIZE 0x4000
4114 #define ELF_COMMONPAGESIZE 0x1000
4116 #define TARGET_LITTLE_SYM metag_elf32_vec
4117 #define TARGET_LITTLE_NAME "elf32-metag"
4119 #define elf_symbol_leading_char '_'
4121 #define elf_info_to_howto_rel NULL
4122 #define elf_info_to_howto metag_info_to_howto_rela
4124 #define bfd_elf32_bfd_is_local_label_name elf_metag_is_local_label_name
4125 #define bfd_elf32_bfd_link_hash_table_create \
4126 elf_metag_link_hash_table_create
4127 #define elf_backend_relocate_section elf_metag_relocate_section
4128 #define elf_backend_gc_mark_hook elf_metag_gc_mark_hook
4129 #define elf_backend_check_relocs elf_metag_check_relocs
4130 #define elf_backend_create_dynamic_sections elf_metag_create_dynamic_sections
4131 #define elf_backend_adjust_dynamic_symbol elf_metag_adjust_dynamic_symbol
4132 #define elf_backend_finish_dynamic_symbol elf_metag_finish_dynamic_symbol
4133 #define elf_backend_finish_dynamic_sections elf_metag_finish_dynamic_sections
4134 #define elf_backend_size_dynamic_sections elf_metag_size_dynamic_sections
4135 #define elf_backend_omit_section_dynsym \
4136 _bfd_elf_omit_section_dynsym_all
4137 #define elf_backend_init_file_header elf_metag_init_file_header
4138 #define elf_backend_reloc_type_class elf_metag_reloc_type_class
4139 #define elf_backend_copy_indirect_symbol elf_metag_copy_indirect_symbol
4140 #define elf_backend_plt_sym_val elf_metag_plt_sym_val
4142 #define elf_backend_can_gc_sections 1
4143 #define elf_backend_can_refcount 1
4144 #define elf_backend_rela_normal 1
4145 #define elf_backend_want_got_plt 1
4146 #define elf_backend_want_got_sym 0
4147 #define elf_backend_want_plt_sym 0
4148 #define elf_backend_plt_readonly 1
4149 #define elf_backend_dtrel_excludes_plt 1
4150 #define elf_backend_want_dynrelro 1
4152 #define bfd_elf32_bfd_reloc_type_lookup metag_reloc_type_lookup
4153 #define bfd_elf32_bfd_reloc_name_lookup metag_reloc_name_lookup
4155 #include "elf32-target.h"