1 /* Or1k-specific support for 32-bit ELF.
2 Copyright (C) 2001-2015 Free Software Foundation, Inc.
3 Contributed for OR32 by Johan Rydberg, jrydberg@opencores.org
5 PIC parts added by Stefan Kristiansson, stefan.kristiansson@saunalahti.fi,
6 largely based on elf32-m32r.c and elf32-microblaze.c.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, see <http://www.gnu.org/licenses/>. */
28 #include "libiberty.h"
30 #define PLT_ENTRY_SIZE 20
32 #define PLT0_ENTRY_WORD0 0x19800000 /* l.movhi r12, 0 <- hi(.got+4) */
33 #define PLT0_ENTRY_WORD1 0xa98c0000 /* l.ori r12, r12, 0 <- lo(.got+4) */
34 #define PLT0_ENTRY_WORD2 0x85ec0004 /* l.lwz r15, 4(r12) <- *(.got+8)*/
35 #define PLT0_ENTRY_WORD3 0x44007800 /* l.jr r15 */
36 #define PLT0_ENTRY_WORD4 0x858c0000 /* l.lwz r12, 0(r12) */
38 #define PLT0_PIC_ENTRY_WORD0 0x85900004 /* l.lwz r12, 4(r16) */
39 #define PLT0_PIC_ENTRY_WORD1 0x85f00008 /* l.lwz r15, 8(r16) */
40 #define PLT0_PIC_ENTRY_WORD2 0x44007800 /* l.jr r15 */
41 #define PLT0_PIC_ENTRY_WORD3 0x15000000 /* l.nop */
42 #define PLT0_PIC_ENTRY_WORD4 0x15000000 /* l.nop */
44 #define PLT_ENTRY_WORD0 0x19800000 /* l.movhi r12, 0 <- hi(got idx addr) */
45 #define PLT_ENTRY_WORD1 0xa98c0000 /* l.ori r12, r12, 0 <- lo(got idx addr) */
46 #define PLT_ENTRY_WORD2 0x858c0000 /* l.lwz r12, 0(r12) */
47 #define PLT_ENTRY_WORD3 0x44006000 /* l.jr r12 */
48 #define PLT_ENTRY_WORD4 0xa9600000 /* l.ori r11, r0, 0 <- reloc offset */
50 #define PLT_PIC_ENTRY_WORD0 0x85900000 /* l.lwz r12, 0(r16) <- index in got */
51 #define PLT_PIC_ENTRY_WORD1 0xa9600000 /* l.ori r11, r0, 0 <- reloc offset */
52 #define PLT_PIC_ENTRY_WORD2 0x44006000 /* l.jr r12 */
53 #define PLT_PIC_ENTRY_WORD3 0x15000000 /* l.nop */
54 #define PLT_PIC_ENTRY_WORD4 0x15000000 /* l.nop */
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
58 static reloc_howto_type or1k_elf_howto_table[] =
60 /* This reloc does nothing. */
61 HOWTO (R_OR1K_NONE, /* type */
63 3, /* size (0 = byte, 1 = short, 2 = long) */
65 FALSE, /* pc_relative */
67 complain_overflow_dont, /* complain_on_overflow */
68 bfd_elf_generic_reloc, /* special_function */
69 "R_OR1K_NONE", /* name */
70 FALSE, /* partial_inplace */
73 FALSE), /* pcrel_offset */
77 2, /* size (0 = byte, 1 = short, 2 = long) */
79 FALSE, /* pc_relative */
81 complain_overflow_unsigned, /* complain_on_overflow */
82 bfd_elf_generic_reloc, /* special_function */
83 "R_OR1K_32", /* name */
84 FALSE, /* partial_inplace */
86 0xffffffff, /* dst_mask */
87 FALSE), /* pcrel_offset */
91 1, /* size (0 = byte, 1 = short, 2 = long) */
93 FALSE, /* pc_relative */
95 complain_overflow_unsigned, /* complain_on_overflow */
96 bfd_elf_generic_reloc, /* special_function */
97 "R_OR1K_16", /* name */
98 FALSE, /* partial_inplace */
100 0xffff, /* dst_mask */
101 FALSE), /* pcrel_offset */
105 0, /* size (0 = byte, 1 = short, 2 = long) */
107 FALSE, /* pc_relative */
109 complain_overflow_unsigned, /* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_OR1K_8", /* name */
112 FALSE, /* partial_inplace */
115 FALSE), /* pcrel_offset */
117 HOWTO (R_OR1K_LO_16_IN_INSN, /* type */
119 2, /* size (0 = byte, 1 = short, 2 = long) */
121 FALSE, /* pc_relative */
123 complain_overflow_dont, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_OR1K_LO_16_IN_INSN", /* name */
126 FALSE, /* partial_inplace */
128 0x0000ffff, /* dst_mask */
129 FALSE), /* pcrel_offset */
131 HOWTO (R_OR1K_HI_16_IN_INSN, /* type */
133 2, /* size (0 = byte, 1 = short, 2 = long) */
135 FALSE, /* pc_relative */
137 complain_overflow_dont, /* complain_on_overflow */
138 bfd_elf_generic_reloc, /* special_function */
139 "R_OR1K_HI_16_IN_INSN", /* name */
140 FALSE, /* partial_inplace */
142 0x0000ffff, /* dst_mask */
143 FALSE), /* pcrel_offset */
145 /* A PC relative 26 bit relocation, right shifted by 2. */
146 HOWTO (R_OR1K_INSN_REL_26, /* type */
148 2, /* size (0 = byte, 1 = short, 2 = long) */
150 TRUE, /* pc_relative */
152 complain_overflow_signed, /* complain_on_overflow */
153 bfd_elf_generic_reloc, /* special_function */
154 "R_OR1K_INSN_REL_26", /* name */
155 FALSE, /* partial_inplace */
157 0x03ffffff, /* dst_mask */
158 TRUE), /* pcrel_offset */
160 /* GNU extension to record C++ vtable hierarchy. */
161 HOWTO (R_OR1K_GNU_VTINHERIT, /* type */
163 2, /* size (0 = byte, 1 = short, 2 = long) */
165 FALSE, /* pc_relative */
167 complain_overflow_dont, /* complain_on_overflow */
168 NULL, /* special_function */
169 "R_OR1K_GNU_VTINHERIT", /* name */
170 FALSE, /* partial_inplace */
173 FALSE), /* pcrel_offset */
175 /* GNU extension to record C++ vtable member usage. */
176 HOWTO (R_OR1K_GNU_VTENTRY, /* type */
178 2, /* size (0 = byte, 1 = short, 2 = long) */
180 FALSE, /* pc_relative */
182 complain_overflow_dont, /* complain_on_overflow */
183 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
184 "R_OR1K_GNU_VTENTRY", /* name */
185 FALSE, /* partial_inplace */
188 FALSE), /* pcrel_offset */
190 HOWTO (R_OR1K_32_PCREL,
192 2, /* size (0 = byte, 1 = short, 2 = long) */
194 TRUE, /* pc_relative */
196 complain_overflow_signed, /* complain_on_overflow */
197 bfd_elf_generic_reloc, /* special_function */
198 "R_OR1K_32_PCREL", /* name */
199 FALSE, /* partial_inplace */
201 0xffffffff, /* dst_mask */
202 FALSE), /* pcrel_offset */
204 HOWTO (R_OR1K_16_PCREL,
206 1, /* size (0 = byte, 1 = short, 2 = long) */
208 TRUE, /* pc_relative */
210 complain_overflow_signed, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_OR1K_16_PCREL", /* name */
213 FALSE, /* partial_inplace */
215 0xffff, /* dst_mask */
216 FALSE), /* pcrel_offset */
218 HOWTO (R_OR1K_8_PCREL,
220 0, /* size (0 = byte, 1 = short, 2 = long) */
222 TRUE, /* pc_relative */
224 complain_overflow_signed, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_OR1K_8_PCREL", /* name */
227 FALSE, /* partial_inplace */
230 FALSE), /* pcrel_offset */
232 HOWTO (R_OR1K_GOTPC_HI16, /* Type. */
233 16, /* Rightshift. */
234 2, /* Size (0 = byte, 1 = short, 2 = long). */
236 TRUE, /* PC_relative. */
238 complain_overflow_dont, /* Complain on overflow. */
239 bfd_elf_generic_reloc, /* Special Function. */
240 "R_OR1K_GOTPC_HI16", /* Name. */
241 FALSE, /* Partial Inplace. */
242 0, /* Source Mask. */
243 0xffff, /* Dest Mask. */
244 TRUE), /* PC relative offset? */
246 HOWTO (R_OR1K_GOTPC_LO16, /* Type. */
248 2, /* Size (0 = byte, 1 = short, 2 = long). */
250 TRUE, /* PC_relative. */
252 complain_overflow_dont, /* Complain on overflow. */
253 bfd_elf_generic_reloc, /* Special Function. */
254 "R_OR1K_GOTPC_LO16", /* Name. */
255 FALSE, /* Partial Inplace. */
256 0, /* Source Mask. */
257 0xffff, /* Dest Mask. */
258 TRUE), /* PC relative offset? */
260 HOWTO (R_OR1K_GOT16, /* type */
262 2, /* size (0 = byte, 1 = short, 2 = long) */
264 FALSE, /* pc_relative */
266 complain_overflow_signed, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_OR1K_GOT16", /* name */
269 FALSE, /* partial_inplace */
271 0xffff, /* dst_mask */
272 FALSE), /* pcrel_offset */
274 /* A 26 bit PLT relocation. Shifted by 2. */
275 HOWTO (R_OR1K_PLT26, /* Type. */
277 2, /* Size (0 = byte, 1 = short, 2 = long). */
279 TRUE, /* PC_relative. */
281 complain_overflow_dont, /* Complain on overflow. */
282 bfd_elf_generic_reloc,/* Special Function. */
283 "R_OR1K_PLT26", /* Name. */
284 FALSE, /* Partial Inplace. */
285 0, /* Source Mask. */
286 0x03ffffff, /* Dest Mask. */
287 TRUE), /* PC relative offset? */
289 HOWTO (R_OR1K_GOTOFF_HI16, /* type */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
293 FALSE, /* pc_relative */
295 complain_overflow_dont, /* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_OR1K_GOTOFF_HI16", /* name */
298 FALSE, /* partial_inplace */
300 0xffff, /* dst_mask */
301 FALSE), /* pcrel_offset */
303 HOWTO (R_OR1K_GOTOFF_LO16, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 FALSE, /* pc_relative */
309 complain_overflow_dont, /* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_OR1K_GOTOFF_LO16", /* name */
312 FALSE, /* partial_inplace */
314 0xffff, /* dst_mask */
315 FALSE), /* pcrel_offset */
317 HOWTO (R_OR1K_COPY, /* type */
319 2, /* size (0 = byte, 1 = short, 2 = long) */
321 FALSE, /* pc_relative */
323 complain_overflow_bitfield, /* complain_on_overflow */
324 bfd_elf_generic_reloc, /* special_function */
325 "R_OR1K_COPY", /* name */
326 FALSE, /* partial_inplace */
327 0xffffffff, /* src_mask */
328 0xffffffff, /* dst_mask */
329 FALSE), /* pcrel_offset */
331 HOWTO (R_OR1K_GLOB_DAT, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 FALSE, /* pc_relative */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_OR1K_GLOB_DAT", /* name */
340 FALSE, /* partial_inplace */
341 0xffffffff, /* src_mask */
342 0xffffffff, /* dst_mask */
343 FALSE), /* pcrel_offset */
345 HOWTO (R_OR1K_JMP_SLOT, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 FALSE, /* pc_relative */
351 complain_overflow_bitfield, /* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_OR1K_JMP_SLOT", /* name */
354 FALSE, /* partial_inplace */
355 0xffffffff, /* src_mask */
356 0xffffffff, /* dst_mask */
357 FALSE), /* pcrel_offset */
359 HOWTO (R_OR1K_RELATIVE, /* type */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
363 FALSE, /* pc_relative */
365 complain_overflow_bitfield, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_OR1K_RELATIVE", /* name */
368 FALSE, /* partial_inplace */
369 0xffffffff, /* src_mask */
370 0xffffffff, /* dst_mask */
371 FALSE), /* pcrel_offset */
373 HOWTO (R_OR1K_TLS_GD_HI16, /* type */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
377 FALSE, /* pc_relative */
379 complain_overflow_dont, /* complain_on_overflow */
380 bfd_elf_generic_reloc, /* special_function */
381 "R_OR1K_TLS_GD_HI16", /* name */
382 FALSE, /* partial_inplace */
384 0xffff, /* dst_mask */
385 FALSE), /* pcrel_offset */
387 HOWTO (R_OR1K_TLS_GD_LO16, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 FALSE, /* pc_relative */
393 complain_overflow_dont, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_OR1K_TLS_GD_LO16", /* name */
396 FALSE, /* partial_inplace */
398 0xffff, /* dst_mask */
399 FALSE), /* pcrel_offset */
401 HOWTO (R_OR1K_TLS_LDM_HI16, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 FALSE, /* pc_relative */
407 complain_overflow_dont, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_OR1K_TLS_LDM_HI16", /* name */
410 FALSE, /* partial_inplace */
412 0xffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
415 HOWTO (R_OR1K_TLS_LDM_LO16, /* type */
417 2, /* size (0 = byte, 1 = short, 2 = long) */
419 FALSE, /* pc_relative */
421 complain_overflow_dont, /* complain_on_overflow */
422 bfd_elf_generic_reloc, /* special_function */
423 "R_OR1K_TLS_LDM_LO16", /* name */
424 FALSE, /* partial_inplace */
426 0xffff, /* dst_mask */
427 FALSE), /* pcrel_offset */
429 HOWTO (R_OR1K_TLS_LDO_HI16, /* type */
431 2, /* size (0 = byte, 1 = short, 2 = long) */
433 FALSE, /* pc_relative */
435 complain_overflow_dont, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_OR1K_TLS_LDO_HI16", /* name */
438 FALSE, /* partial_inplace */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
443 HOWTO (R_OR1K_TLS_LDO_LO16, /* type */
445 2, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE, /* pc_relative */
449 complain_overflow_dont, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_OR1K_TLS_LDO_LO16", /* name */
452 FALSE, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
457 HOWTO (R_OR1K_TLS_IE_HI16, /* type */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE, /* pc_relative */
463 complain_overflow_dont, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_OR1K_TLS_IE_HI16", /* name */
466 FALSE, /* partial_inplace */
468 0xffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
471 HOWTO (R_OR1K_TLS_IE_LO16, /* type */
473 2, /* size (0 = byte, 1 = short, 2 = long) */
475 FALSE, /* pc_relative */
477 complain_overflow_dont, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_OR1K_TLS_IE_LO16", /* name */
480 FALSE, /* partial_inplace */
482 0xffff, /* dst_mask */
483 FALSE), /* pcrel_offset */
485 HOWTO (R_OR1K_TLS_LE_HI16, /* type */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
489 FALSE, /* pc_relative */
491 complain_overflow_dont, /* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_OR1K_TLS_LE_HI16", /* name */
494 FALSE, /* partial_inplace */
496 0xffff, /* dst_mask */
497 FALSE), /* pcrel_offset */
499 HOWTO (R_OR1K_TLS_LE_LO16, /* type */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
503 FALSE, /* pc_relative */
505 complain_overflow_dont, /* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_OR1K_TLS_LE_LO16", /* name */
508 FALSE, /* partial_inplace */
510 0xffff, /* dst_mask */
511 FALSE), /* pcrel_offset */
515 /* Map BFD reloc types to Or1k ELF reloc types. */
517 struct or1k_reloc_map
519 bfd_reloc_code_real_type bfd_reloc_val;
520 unsigned int or1k_reloc_val;
523 static const struct or1k_reloc_map or1k_reloc_map[] =
525 { BFD_RELOC_NONE, R_OR1K_NONE },
526 { BFD_RELOC_32, R_OR1K_32 },
527 { BFD_RELOC_16, R_OR1K_16 },
528 { BFD_RELOC_8, R_OR1K_8 },
529 { BFD_RELOC_LO16, R_OR1K_LO_16_IN_INSN },
530 { BFD_RELOC_HI16, R_OR1K_HI_16_IN_INSN },
531 { BFD_RELOC_OR1K_REL_26, R_OR1K_INSN_REL_26 },
532 { BFD_RELOC_VTABLE_ENTRY, R_OR1K_GNU_VTENTRY },
533 { BFD_RELOC_VTABLE_INHERIT, R_OR1K_GNU_VTINHERIT },
534 { BFD_RELOC_32_PCREL, R_OR1K_32_PCREL },
535 { BFD_RELOC_16_PCREL, R_OR1K_16_PCREL },
536 { BFD_RELOC_8_PCREL, R_OR1K_8_PCREL },
537 { BFD_RELOC_OR1K_GOTPC_HI16, R_OR1K_GOTPC_HI16 },
538 { BFD_RELOC_OR1K_GOTPC_LO16, R_OR1K_GOTPC_LO16 },
539 { BFD_RELOC_OR1K_GOT16, R_OR1K_GOT16 },
540 { BFD_RELOC_OR1K_PLT26, R_OR1K_PLT26 },
541 { BFD_RELOC_OR1K_GOTOFF_HI16, R_OR1K_GOTOFF_HI16 },
542 { BFD_RELOC_OR1K_GOTOFF_LO16, R_OR1K_GOTOFF_LO16 },
543 { BFD_RELOC_OR1K_GLOB_DAT, R_OR1K_GLOB_DAT },
544 { BFD_RELOC_OR1K_COPY, R_OR1K_COPY },
545 { BFD_RELOC_OR1K_JMP_SLOT, R_OR1K_JMP_SLOT },
546 { BFD_RELOC_OR1K_RELATIVE, R_OR1K_RELATIVE },
547 { BFD_RELOC_OR1K_TLS_GD_HI16, R_OR1K_TLS_GD_HI16 },
548 { BFD_RELOC_OR1K_TLS_GD_LO16, R_OR1K_TLS_GD_LO16 },
549 { BFD_RELOC_OR1K_TLS_LDM_HI16, R_OR1K_TLS_LDM_HI16 },
550 { BFD_RELOC_OR1K_TLS_LDM_LO16, R_OR1K_TLS_LDM_LO16 },
551 { BFD_RELOC_OR1K_TLS_LDO_HI16, R_OR1K_TLS_LDO_HI16 },
552 { BFD_RELOC_OR1K_TLS_LDO_LO16, R_OR1K_TLS_LDO_LO16 },
553 { BFD_RELOC_OR1K_TLS_IE_HI16, R_OR1K_TLS_IE_HI16 },
554 { BFD_RELOC_OR1K_TLS_IE_LO16, R_OR1K_TLS_IE_LO16 },
555 { BFD_RELOC_OR1K_TLS_LE_HI16, R_OR1K_TLS_LE_HI16 },
556 { BFD_RELOC_OR1K_TLS_LE_LO16, R_OR1K_TLS_LE_LO16 },
559 /* The linker needs to keep track of the number of relocs that it
560 decides to copy as dynamic relocs in check_relocs for each symbol.
561 This is so that it can later discard them if they are found to be
562 unnecessary. We store the information in a field extending the
563 regular ELF linker hash table. */
565 struct elf_or1k_dyn_relocs
567 struct elf_or1k_dyn_relocs *next;
569 /* The input section of the reloc. */
572 /* Total number of relocs copied for the input section. */
575 /* Number of pc-relative relocs copied for the input section. */
576 bfd_size_type pc_count;
579 #define TLS_UNKNOWN 0
586 /* ELF linker hash entry. */
587 struct elf_or1k_link_hash_entry
589 struct elf_link_hash_entry root;
591 /* Track dynamic relocs copied for this symbol. */
592 struct elf_or1k_dyn_relocs *dyn_relocs;
594 /* Track type of TLS access. */
595 unsigned char tls_type;
598 /* ELF object data. */
599 struct elf_or1k_obj_tdata
601 struct elf_obj_tdata root;
603 /* tls_type for each local got entry. */
604 unsigned char *local_tls_type;
607 #define elf_or1k_tdata(abfd) \
608 ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any)
610 #define elf_or1k_local_tls_type(abfd) \
611 (elf_or1k_tdata (abfd)->local_tls_type)
613 /* ELF linker hash table. */
614 struct elf_or1k_link_hash_table
616 struct elf_link_hash_table root;
618 /* Short-cuts to get to dynamic linker sections. */
627 /* Small local sym to section mapping cache. */
628 struct sym_cache sym_sec;
631 /* Get the ELF linker hash table from a link_info structure. */
632 #define or1k_elf_hash_table(p) \
633 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
634 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL)
637 elf_or1k_mkobject (bfd *abfd)
639 return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata),
643 /* Create an entry in an or1k ELF linker hash table. */
645 static struct bfd_hash_entry *
646 or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
647 struct bfd_hash_table *table,
650 struct elf_or1k_link_hash_entry *ret =
651 (struct elf_or1k_link_hash_entry *) entry;
653 /* Allocate the structure if it has not already been allocated by a
656 ret = bfd_hash_allocate (table,
657 sizeof (struct elf_or1k_link_hash_entry));
661 /* Call the allocation method of the superclass. */
662 ret = ((struct elf_or1k_link_hash_entry *)
663 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
667 struct elf_or1k_link_hash_entry *eh;
669 eh = (struct elf_or1k_link_hash_entry *) ret;
670 eh->dyn_relocs = NULL;
671 eh->tls_type = TLS_UNKNOWN;
674 return (struct bfd_hash_entry *) ret;
677 /* Create an or1k ELF linker hash table. */
679 static struct bfd_link_hash_table *
680 or1k_elf_link_hash_table_create (bfd *abfd)
682 struct elf_or1k_link_hash_table *ret;
683 bfd_size_type amt = sizeof (struct elf_or1k_link_hash_table);
685 ret = bfd_zmalloc (amt);
689 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
690 or1k_elf_link_hash_newfunc,
691 sizeof (struct elf_or1k_link_hash_entry),
698 return &ret->root.root;
701 static reloc_howto_type *
702 or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
703 bfd_reloc_code_real_type code)
707 for (i = ARRAY_SIZE (or1k_reloc_map); i--;)
708 if (or1k_reloc_map[i].bfd_reloc_val == code)
709 return & or1k_elf_howto_table[or1k_reloc_map[i].or1k_reloc_val];
714 static reloc_howto_type *
715 or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
721 i < (sizeof (or1k_elf_howto_table)
722 / sizeof (or1k_elf_howto_table[0]));
724 if (or1k_elf_howto_table[i].name != NULL
725 && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0)
726 return &or1k_elf_howto_table[i];
731 /* Set the howto pointer for an Or1k ELF reloc. */
734 or1k_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
736 Elf_Internal_Rela * dst)
740 r_type = ELF32_R_TYPE (dst->r_info);
741 if (r_type >= (unsigned int) R_OR1K_max)
743 _bfd_error_handler (_("%B: invalid OR1K reloc number: %d"), abfd, r_type);
746 cache_ptr->howto = & or1k_elf_howto_table[r_type];
750 /* Return the relocation value for @tpoff relocations.. */
752 tpoff (struct bfd_link_info *info, bfd_vma address)
754 /* If tls_sec is NULL, we should have signalled an error already. */
755 if (elf_hash_table (info)->tls_sec == NULL)
758 /* The thread pointer on or1k stores the address after the TCB where
759 the data is, just compute the difference. No need to compensate
760 for the size of TCB. */
761 return (address - elf_hash_table (info)->tls_sec->vma);
764 /* Relocate an Or1k ELF section.
766 The RELOCATE_SECTION function is called by the new ELF backend linker
767 to handle the relocations for a section.
769 The relocs are always passed as Rela structures; if the section
770 actually uses Rel structures, the r_addend field will always be
773 This function is responsible for adjusting the section contents as
774 necessary, and (if using Rela relocs and generating a relocatable
775 output file) adjusting the reloc addend as necessary.
777 This function does not have to worry about setting the reloc
778 address or the reloc symbol index.
780 LOCAL_SYMS is a pointer to the swapped in local symbols.
782 LOCAL_SECTIONS is an array giving the section in the input file
783 corresponding to the st_shndx field of each local symbol.
785 The global hash table entry for the global symbols can be found
786 via elf_sym_hashes (input_bfd).
788 When generating relocatable output, this function must handle
789 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
790 going to be the section symbol corresponding to the output
791 section, which means that the addend must be adjusted
795 or1k_elf_relocate_section (bfd *output_bfd,
796 struct bfd_link_info *info,
798 asection *input_section,
800 Elf_Internal_Rela *relocs,
801 Elf_Internal_Sym *local_syms,
802 asection **local_sections)
804 Elf_Internal_Shdr *symtab_hdr;
805 struct elf_link_hash_entry **sym_hashes;
806 Elf_Internal_Rela *rel;
807 Elf_Internal_Rela *relend;
808 struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info);
811 bfd_vma *local_got_offsets;
817 dynobj = htab->root.dynobj;
818 local_got_offsets = elf_local_got_offsets (input_bfd);
820 sreloc = elf_section_data (input_section)->sreloc;
824 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
825 sym_hashes = elf_sym_hashes (input_bfd);
826 relend = relocs + input_section->reloc_count;
828 for (rel = relocs; rel < relend; rel++)
830 reloc_howto_type *howto;
831 unsigned long r_symndx;
832 Elf_Internal_Sym *sym;
834 struct elf_link_hash_entry *h;
836 bfd_reloc_status_type r;
837 const char *name = NULL;
840 r_type = ELF32_R_TYPE (rel->r_info);
841 r_symndx = ELF32_R_SYM (rel->r_info);
843 if (r_type == R_OR1K_GNU_VTINHERIT
844 || r_type == R_OR1K_GNU_VTENTRY)
847 if (r_type < 0 || r_type >= (int) R_OR1K_max)
849 bfd_set_error (bfd_error_bad_value);
853 howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info);
858 if (r_symndx < symtab_hdr->sh_info)
860 sym = local_syms + r_symndx;
861 sec = local_sections[r_symndx];
862 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
864 name = bfd_elf_string_from_elf_section
865 (input_bfd, symtab_hdr->sh_link, sym->st_name);
866 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
870 bfd_boolean unresolved_reloc, warned, ignored;
872 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
873 r_symndx, symtab_hdr, sym_hashes,
875 unresolved_reloc, warned, ignored);
878 if (sec != NULL && discarded_section (sec))
879 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
880 rel, 1, relend, howto, 0, contents);
882 if (info->relocatable)
889 if (htab->splt != NULL && h != NULL
890 && h->plt.offset != (bfd_vma) -1)
892 relocation = (htab->splt->output_section->vma
893 + htab->splt->output_offset
900 /* Relocation is to the entry for this symbol in the global
902 BFD_ASSERT (sgot != NULL);
909 BFD_ASSERT (off != (bfd_vma) -1);
911 dyn = htab->root.dynamic_sections_created;
912 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
914 && SYMBOL_REFERENCES_LOCAL (info, h)))
916 /* This is actually a static link, or it is a
917 -Bsymbolic link and the symbol is defined
918 locally, or the symbol was forced to be local
919 because of a version file. We must initialize
920 this entry in the global offset table. Since the
921 offset must always be a multiple of 4, we use the
922 least significant bit to record whether we have
923 initialized it already.
925 When doing a dynamic link, we create a .rela.got
926 relocation entry to initialize the value. This
927 is done in the finish_dynamic_symbol routine. */
932 /* Write entry in GOT. */
933 bfd_put_32 (output_bfd, relocation,
934 sgot->contents + off);
935 /* Mark GOT entry as having been written. */
940 relocation = sgot->output_offset + off;
947 BFD_ASSERT (local_got_offsets != NULL
948 && local_got_offsets[r_symndx] != (bfd_vma) -1);
950 /* Get offset into GOT table. */
951 off = local_got_offsets[r_symndx];
953 /* The offset must always be a multiple of 4. We use
954 the least significant bit to record whether we have
955 already processed this entry. */
960 /* Write entry in GOT. */
961 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
965 Elf_Internal_Rela outrel;
967 /* We need to generate a R_OR1K_RELATIVE reloc
968 for the dynamic linker. */
969 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
970 BFD_ASSERT (srelgot != NULL);
972 outrel.r_offset = (sgot->output_section->vma
973 + sgot->output_offset
975 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
976 outrel.r_addend = relocation;
977 loc = srelgot->contents;
978 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
979 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
980 ++srelgot->reloc_count;
983 local_got_offsets[r_symndx] |= 1;
985 relocation = sgot->output_offset + off;
988 /* Addend should be zero. */
989 if (rel->r_addend != 0)
990 (*_bfd_error_handler)
991 (_("internal error: addend should be zero for R_OR1K_GOT16"));
995 case R_OR1K_GOTOFF_LO16:
996 case R_OR1K_GOTOFF_HI16:
997 /* Relocation is offset from GOT. */
998 BFD_ASSERT (sgot != NULL);
999 relocation -= sgot->output_section->vma;
1002 case R_OR1K_INSN_REL_26:
1003 case R_OR1K_HI_16_IN_INSN:
1004 case R_OR1K_LO_16_IN_INSN:
1008 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1009 from removed linkonce sections, or sections discarded by
1011 if (r_symndx == STN_UNDEF
1012 || (input_section->flags & SEC_ALLOC) == 0)
1017 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1018 || h->root.type != bfd_link_hash_undefweak)
1019 && (howto->type != R_OR1K_INSN_REL_26
1020 || !SYMBOL_CALLS_LOCAL (info, h)))
1027 || h->root.type == bfd_link_hash_undefweak
1028 || h->root.type == bfd_link_hash_undefined)))
1030 Elf_Internal_Rela outrel;
1034 /* When generating a shared object, these relocations
1035 are copied into the output file to be resolved at run
1038 BFD_ASSERT (sreloc != NULL);
1043 _bfd_elf_section_offset (output_bfd, info, input_section,
1045 if (outrel.r_offset == (bfd_vma) -1)
1047 else if (outrel.r_offset == (bfd_vma) -2)
1049 outrel.r_offset += (input_section->output_section->vma
1050 + input_section->output_offset);
1053 memset (&outrel, 0, sizeof outrel);
1054 /* h->dynindx may be -1 if the symbol was marked to
1057 && ((! info->symbolic && h->dynindx != -1)
1058 || !h->def_regular))
1060 BFD_ASSERT (h->dynindx != -1);
1061 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1062 outrel.r_addend = rel->r_addend;
1066 if (r_type == R_OR1K_32)
1068 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1069 outrel.r_addend = relocation + rel->r_addend;
1074 (*_bfd_error_handler)
1075 (_("%B: probably compiled without -fPIC?"),
1077 bfd_set_error (bfd_error_bad_value);
1082 loc = sreloc->contents;
1083 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1084 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1090 case R_OR1K_TLS_LDM_HI16:
1091 case R_OR1K_TLS_LDM_LO16:
1092 case R_OR1K_TLS_LDO_HI16:
1093 case R_OR1K_TLS_LDO_LO16:
1094 /* TODO: implement support for local dynamic. */
1096 (*_bfd_error_handler)
1097 (_("%B: support for local dynamic not implemented"),
1099 bfd_set_error (bfd_error_bad_value);
1103 case R_OR1K_TLS_GD_HI16:
1104 case R_OR1K_TLS_GD_LO16:
1105 case R_OR1K_TLS_IE_HI16:
1106 case R_OR1K_TLS_IE_LO16:
1109 Elf_Internal_Rela rela;
1113 sreloc = bfd_get_section_by_name (dynobj, ".rela.got");
1115 /* Mark as TLS related GOT entry by setting
1116 bit 2 as well as bit 1. */
1119 gotoff = h->got.offset;
1124 gotoff = local_got_offsets[r_symndx];
1125 local_got_offsets[r_symndx] |= 3;
1128 /* Only process the relocation once. */
1131 relocation = sgot->output_offset + (gotoff & ~3);
1135 BFD_ASSERT (elf_hash_table (info)->hgot == NULL
1136 || elf_hash_table (info)->hgot->root.u.def.value == 0);
1138 /* Dynamic entries will require relocations. if we do not need
1139 them we will just use the default R_OR1K_NONE and
1140 not set anything. */
1141 dynamic = info->shared
1142 || (sec && (sec->flags & SEC_ALLOC) != 0
1144 && (h->root.type == bfd_link_hash_defweak || !h->def_regular));
1147 if (dynamic && (howto->type == R_OR1K_TLS_GD_HI16
1148 || howto->type == R_OR1K_TLS_GD_LO16))
1152 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1153 for (i = 0; i < 2; ++i)
1155 rela.r_offset = sgot->output_section->vma +
1156 sgot->output_offset + gotoff + i*4;
1157 if (h != NULL && h->dynindx != -1)
1159 rela.r_info = ELF32_R_INFO (h->dynindx,
1160 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1165 rela.r_info = ELF32_R_INFO (0,
1166 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1167 rela.r_addend = tpoff (info, relocation);
1170 loc = sreloc->contents;
1171 loc += sreloc->reloc_count++ *
1172 sizeof (Elf32_External_Rela);
1174 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1175 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4);
1179 else if (howto->type == R_OR1K_TLS_GD_HI16
1180 || howto->type == R_OR1K_TLS_GD_LO16)
1182 bfd_put_32 (output_bfd, 1, sgot->contents + gotoff);
1183 bfd_put_32 (output_bfd, tpoff (info, relocation),
1184 sgot->contents + gotoff + 4);
1189 /* Add TPOFF GOT and rela entries. */
1190 rela.r_offset = sgot->output_section->vma +
1191 sgot->output_offset + gotoff;
1192 if (h != NULL && h->dynindx != -1)
1194 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF);
1199 rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF);
1200 rela.r_addend = tpoff (info, relocation);
1203 loc = sreloc->contents;
1204 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1206 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1207 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff);
1212 bfd_put_32 (output_bfd, tpoff (info, relocation),
1213 sgot->contents + gotoff);
1215 relocation = sgot->output_offset + gotoff;
1218 case R_OR1K_TLS_LE_HI16:
1219 case R_OR1K_TLS_LE_LO16:
1221 /* Relocation is offset from TP. */
1222 relocation = tpoff (info, relocation);
1225 case R_OR1K_TLS_DTPMOD:
1226 case R_OR1K_TLS_DTPOFF:
1227 case R_OR1K_TLS_TPOFF:
1228 /* These are resolved dynamically on load and shouldn't
1229 be used as linker input. */
1231 (*_bfd_error_handler)
1232 (_("%B: will not resolve runtime TLS relocation"),
1234 bfd_set_error (bfd_error_bad_value);
1240 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
1241 rel->r_offset, relocation, rel->r_addend);
1243 if (r != bfd_reloc_ok)
1245 const char *msg = NULL;
1249 case bfd_reloc_overflow:
1250 r = info->callbacks->reloc_overflow
1251 (info, (h ? &h->root : NULL), name, howto->name,
1252 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1255 case bfd_reloc_undefined:
1256 r = info->callbacks->undefined_symbol
1257 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
1260 case bfd_reloc_outofrange:
1261 msg = _("internal error: out of range error");
1264 case bfd_reloc_notsupported:
1265 msg = _("internal error: unsupported relocation error");
1268 case bfd_reloc_dangerous:
1269 msg = _("internal error: dangerous relocation");
1273 msg = _("internal error: unknown error");
1278 r = info->callbacks->warning
1279 (info, msg, name, input_bfd, input_section, rel->r_offset);
1289 /* Return the section that should be marked against GC for a given
1293 or1k_elf_gc_mark_hook (asection *sec,
1294 struct bfd_link_info *info,
1295 Elf_Internal_Rela *rel,
1296 struct elf_link_hash_entry *h,
1297 Elf_Internal_Sym *sym)
1300 switch (ELF32_R_TYPE (rel->r_info))
1302 case R_OR1K_GNU_VTINHERIT:
1303 case R_OR1K_GNU_VTENTRY:
1307 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1311 or1k_elf_gc_sweep_hook (bfd *abfd,
1312 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1314 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1316 /* Update the got entry reference counts for the section being removed. */
1317 Elf_Internal_Shdr *symtab_hdr;
1318 struct elf_link_hash_entry **sym_hashes;
1319 bfd_signed_vma *local_got_refcounts;
1320 const Elf_Internal_Rela *rel, *relend;
1322 elf_section_data (sec)->local_dynrel = NULL;
1324 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1325 sym_hashes = elf_sym_hashes (abfd);
1326 local_got_refcounts = elf_local_got_refcounts (abfd);
1328 relend = relocs + sec->reloc_count;
1329 for (rel = relocs; rel < relend; rel++)
1331 unsigned long r_symndx;
1332 struct elf_link_hash_entry *h = NULL;
1334 r_symndx = ELF32_R_SYM (rel->r_info);
1335 if (r_symndx >= symtab_hdr->sh_info)
1337 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1338 while (h->root.type == bfd_link_hash_indirect
1339 || h->root.type == bfd_link_hash_warning)
1340 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1343 switch (ELF32_R_TYPE (rel->r_info))
1348 if (h->got.refcount > 0)
1353 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1354 local_got_refcounts[r_symndx]--;
1365 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1366 shortcuts to them in our hash table. */
1369 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1371 struct elf_or1k_link_hash_table *htab;
1374 /* This function may be called more than once. */
1375 s = bfd_get_section_by_name (dynobj, ".got");
1376 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
1379 htab = or1k_elf_hash_table (info);
1383 if (! _bfd_elf_create_got_section (dynobj, info))
1386 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1387 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1388 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1390 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
1393 if (! bfd_set_section_flags (dynobj, htab->srelgot, SEC_ALLOC
1397 | SEC_LINKER_CREATED
1399 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1405 /* Look through the relocs for a section during the first phase. */
1408 or1k_elf_check_relocs (bfd *abfd,
1409 struct bfd_link_info *info,
1411 const Elf_Internal_Rela *relocs)
1413 Elf_Internal_Shdr *symtab_hdr;
1414 struct elf_link_hash_entry **sym_hashes;
1415 const Elf_Internal_Rela *rel;
1417 const Elf_Internal_Rela *rel_end;
1418 struct elf_or1k_link_hash_table *htab;
1420 asection *sreloc = NULL;
1422 if (info->relocatable)
1425 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1426 sym_hashes = elf_sym_hashes (abfd);
1428 htab = or1k_elf_hash_table (info);
1432 dynobj = htab->root.dynobj;
1434 rel_end = relocs + sec->reloc_count;
1435 for (rel = relocs; rel < rel_end; rel++)
1437 struct elf_link_hash_entry *h;
1438 unsigned long r_symndx;
1439 unsigned char tls_type;
1441 r_symndx = ELF32_R_SYM (rel->r_info);
1442 if (r_symndx < symtab_hdr->sh_info)
1446 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1447 while (h->root.type == bfd_link_hash_indirect
1448 || h->root.type == bfd_link_hash_warning)
1449 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1451 /* PR15323, ref flags aren't set for references in the same
1453 h->root.non_ir_ref = 1;
1456 switch (ELF32_R_TYPE (rel->r_info))
1458 case R_OR1K_TLS_GD_HI16:
1459 case R_OR1K_TLS_GD_LO16:
1462 case R_OR1K_TLS_LDM_HI16:
1463 case R_OR1K_TLS_LDM_LO16:
1464 case R_OR1K_TLS_LDO_HI16:
1465 case R_OR1K_TLS_LDO_LO16:
1468 case R_OR1K_TLS_IE_HI16:
1469 case R_OR1K_TLS_IE_LO16:
1472 case R_OR1K_TLS_LE_HI16:
1473 case R_OR1K_TLS_LE_LO16:
1477 tls_type = TLS_NONE;
1480 /* Record TLS type. */
1482 ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type;
1485 unsigned char *local_tls_type;
1487 /* This is a TLS type record for a local symbol. */
1488 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd);
1489 if (local_tls_type == NULL)
1493 size = symtab_hdr->sh_info;
1494 local_tls_type = bfd_zalloc (abfd, size);
1495 if (local_tls_type == NULL)
1497 elf_or1k_local_tls_type (abfd) = local_tls_type;
1499 local_tls_type[r_symndx] = tls_type;
1502 switch (ELF32_R_TYPE (rel->r_info))
1504 /* This relocation describes the C++ object vtable hierarchy.
1505 Reconstruct it for later use during GC. */
1506 case R_OR1K_GNU_VTINHERIT:
1507 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1511 /* This relocation describes which C++ vtable entries are actually
1512 used. Record for later use during GC. */
1513 case R_OR1K_GNU_VTENTRY:
1514 BFD_ASSERT (h != NULL);
1516 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1520 /* This relocation requires .plt entry. */
1525 h->plt.refcount += 1;
1530 case R_OR1K_GOTOFF_HI16:
1531 case R_OR1K_GOTOFF_LO16:
1532 case R_OR1K_TLS_GD_HI16:
1533 case R_OR1K_TLS_GD_LO16:
1534 case R_OR1K_TLS_IE_HI16:
1535 case R_OR1K_TLS_IE_LO16:
1536 if (htab->sgot == NULL)
1539 htab->root.dynobj = dynobj = abfd;
1540 if (! create_got_section (dynobj, info))
1544 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_HI16 &&
1545 ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_LO16)
1548 h->got.refcount += 1;
1551 bfd_signed_vma *local_got_refcounts;
1553 /* This is a global offset table entry for a local symbol. */
1554 local_got_refcounts = elf_local_got_refcounts (abfd);
1555 if (local_got_refcounts == NULL)
1559 size = symtab_hdr->sh_info;
1560 size *= sizeof (bfd_signed_vma);
1561 local_got_refcounts = bfd_zalloc (abfd, size);
1562 if (local_got_refcounts == NULL)
1564 elf_local_got_refcounts (abfd) = local_got_refcounts;
1566 local_got_refcounts[r_symndx] += 1;
1571 case R_OR1K_INSN_REL_26:
1572 case R_OR1K_HI_16_IN_INSN:
1573 case R_OR1K_LO_16_IN_INSN:
1577 if (h != NULL && !info->shared)
1579 /* We may need a copy reloc. */
1582 /* We may also need a .plt entry. */
1583 h->plt.refcount += 1;
1584 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26)
1585 h->pointer_equality_needed = 1;
1588 /* If we are creating a shared library, and this is a reloc
1589 against a global symbol, or a non PC relative reloc
1590 against a local symbol, then we need to copy the reloc
1591 into the shared library. However, if we are linking with
1592 -Bsymbolic, we do not need to copy a reloc against a
1593 global symbol which is defined in an object we are
1594 including in the link (i.e., DEF_REGULAR is set). At
1595 this point we have not seen all the input files, so it is
1596 possible that DEF_REGULAR is not set now but will be set
1597 later (it is never cleared). In case of a weak definition,
1598 DEF_REGULAR may be cleared later by a strong definition in
1599 a shared library. We account for that possibility below by
1600 storing information in the relocs_copied field of the hash
1601 table entry. A similar situation occurs when creating
1602 shared libraries and symbol visibility changes render the
1605 If on the other hand, we are creating an executable, we
1606 may need to keep relocations for symbols satisfied by a
1607 dynamic library if we manage to avoid copy relocs for the
1611 && (sec->flags & SEC_ALLOC) != 0
1612 && (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26
1614 && (!SYMBOLIC_BIND (info, h)
1615 || h->root.type == bfd_link_hash_defweak
1616 || !h->def_regular))))
1618 && (sec->flags & SEC_ALLOC) != 0
1620 && (h->root.type == bfd_link_hash_defweak
1621 || !h->def_regular)))
1623 struct elf_or1k_dyn_relocs *p;
1624 struct elf_or1k_dyn_relocs **head;
1626 /* When creating a shared object, we must copy these
1627 relocs into the output file. We create a reloc
1628 section in dynobj and make room for the reloc. */
1632 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1633 unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name;
1635 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
1639 if (strncmp (name, ".rela", 5) != 0
1640 || strcmp (bfd_get_section_name (abfd, sec),
1643 (*_bfd_error_handler)
1644 (_("%B: bad relocation section name `%s\'"),
1648 if (htab->root.dynobj == NULL)
1649 htab->root.dynobj = abfd;
1650 dynobj = htab->root.dynobj;
1652 sreloc = bfd_get_section_by_name (dynobj, name);
1655 sreloc = _bfd_elf_make_dynamic_reloc_section
1656 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
1661 elf_section_data (sec)->sreloc = sreloc;
1664 /* If this is a global symbol, we count the number of
1665 relocations we need for this symbol. */
1667 head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs;
1670 /* Track dynamic relocs needed for local syms too.
1671 We really need local syms available to do this
1675 Elf_Internal_Sym *isym;
1678 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
1683 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1687 vpp = &elf_section_data (s)->local_dynrel;
1688 head = (struct elf_or1k_dyn_relocs **) vpp;
1692 if (p == NULL || p->sec != sec)
1694 bfd_size_type amt = sizeof *p;
1695 p = ((struct elf_or1k_dyn_relocs *)
1696 bfd_alloc (htab->root.dynobj, amt));
1707 if (ELF32_R_TYPE (rel->r_info) == R_OR1K_INSN_REL_26)
1718 /* Finish up the dynamic sections. */
1721 or1k_elf_finish_dynamic_sections (bfd *output_bfd,
1722 struct bfd_link_info *info)
1725 asection *sdyn, *sgot;
1726 struct elf_or1k_link_hash_table *htab;
1728 htab = or1k_elf_hash_table (info);
1732 dynobj = htab->root.dynobj;
1734 sgot = htab->sgotplt;
1735 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1737 if (htab->root.dynamic_sections_created)
1740 Elf32_External_Dyn *dyncon, *dynconend;
1742 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1744 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1745 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1747 for (; dyncon < dynconend; dyncon++)
1749 Elf_Internal_Dyn dyn;
1752 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1760 s = htab->sgot->output_section;
1761 BFD_ASSERT (s != NULL);
1762 dyn.d_un.d_ptr = s->vma;
1766 s = htab->srelplt->output_section;
1767 BFD_ASSERT (s != NULL);
1768 dyn.d_un.d_ptr = s->vma;
1772 s = htab->srelplt->output_section;
1773 BFD_ASSERT (s != NULL);
1774 dyn.d_un.d_val = s->size;
1778 /* My reading of the SVR4 ABI indicates that the
1779 procedure linkage table relocs (DT_JMPREL) should be
1780 included in the overall relocs (DT_RELA). This is
1781 what Solaris does. However, UnixWare can not handle
1782 that case. Therefore, we override the DT_RELASZ entry
1783 here to make it not include the JMPREL relocs. Since
1784 the linker script arranges for .rela.plt to follow all
1785 other relocation sections, we don't have to worry
1786 about changing the DT_RELA entry. */
1787 if (htab->srelplt != NULL)
1789 /* FIXME: this calculation sometimes produces
1790 wrong result, the problem is that the dyn.d_un.d_val
1791 is not always correct, needs investigation why
1792 that happens. In the meantime, reading the
1793 ".rela.dyn" section by name seems to yield
1796 s = htab->srelplt->output_section;
1797 dyn.d_un.d_val -= s->size;
1800 s = bfd_get_section_by_name (output_bfd, ".rela.dyn");
1801 dyn.d_un.d_val = s ? s->size : 0;
1805 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1809 /* Fill in the first entry in the procedure linkage table. */
1811 if (splt && splt->size > 0)
1815 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0,
1817 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1,
1818 splt->contents + 4);
1819 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2,
1820 splt->contents + 8);
1821 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3,
1822 splt->contents + 12);
1823 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4,
1824 splt->contents + 16);
1829 /* addr = .got + 4 */
1830 addr = sgot->output_section->vma + sgot->output_offset + 4;
1831 bfd_put_32 (output_bfd,
1832 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1834 bfd_put_32 (output_bfd,
1835 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1836 splt->contents + 4);
1837 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1838 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1839 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1842 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
1846 /* Set the first entry in the global offset table to the address of
1847 the dynamic section. */
1848 if (sgot && sgot->size > 0)
1851 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1853 bfd_put_32 (output_bfd,
1854 sdyn->output_section->vma + sdyn->output_offset,
1856 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1859 if (htab->sgot && htab->sgot->size > 0)
1860 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
1865 /* Finish up dynamic symbol handling. We set the contents of various
1866 dynamic sections here. */
1869 or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
1870 struct bfd_link_info *info,
1871 struct elf_link_hash_entry *h,
1872 Elf_Internal_Sym *sym)
1874 struct elf_or1k_link_hash_table *htab;
1877 htab = or1k_elf_hash_table (info);
1881 if (h->plt.offset != (bfd_vma) -1)
1890 Elf_Internal_Rela rela;
1892 /* This symbol has an entry in the procedure linkage table. Set
1894 BFD_ASSERT (h->dynindx != -1);
1897 sgot = htab->sgotplt;
1898 srela = htab->srelplt;
1899 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1901 /* Get the index in the procedure linkage table which
1902 corresponds to this symbol. This is the index of this symbol
1903 in all the symbols for which we are making plt entries. The
1904 first entry in the procedure linkage table is reserved. */
1905 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1907 /* Get the offset into the .got table of the entry that
1908 corresponds to this function. Each .got entry is 4 bytes.
1909 The first three are reserved. */
1910 got_offset = (plt_index + 3) * 4;
1911 got_addr = got_offset;
1913 /* Fill in the entry in the procedure linkage table. */
1916 got_addr += htab->sgotplt->output_section->vma
1917 + htab->sgotplt->output_offset;
1918 bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff),
1919 splt->contents + h->plt.offset);
1920 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff),
1921 splt->contents + h->plt.offset + 4);
1922 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
1923 splt->contents + h->plt.offset + 8);
1924 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
1925 splt->contents + h->plt.offset + 12);
1926 bfd_put_32 (output_bfd, PLT_ENTRY_WORD4
1927 | plt_index * sizeof (Elf32_External_Rela),
1928 splt->contents + h->plt.offset + 16);
1932 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff),
1933 splt->contents + h->plt.offset);
1934 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1
1935 | plt_index * sizeof (Elf32_External_Rela),
1936 splt->contents + h->plt.offset + 4);
1937 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
1938 splt->contents + h->plt.offset + 8);
1939 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
1940 splt->contents + h->plt.offset + 12);
1941 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
1942 splt->contents + h->plt.offset + 16);
1945 /* Fill in the entry in the global offset table. */
1946 bfd_put_32 (output_bfd,
1947 (splt->output_section->vma
1948 + splt->output_offset), /* Same offset. */
1949 sgot->contents + got_offset);
1951 /* Fill in the entry in the .rela.plt section. */
1952 rela.r_offset = (sgot->output_section->vma
1953 + sgot->output_offset
1955 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
1957 loc = srela->contents;
1958 loc += plt_index * sizeof (Elf32_External_Rela);
1959 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1961 if (!h->def_regular)
1963 /* Mark the symbol as undefined, rather than as defined in
1964 the .plt section. Leave the value alone. */
1965 sym->st_shndx = SHN_UNDEF;
1970 if (h->got.offset != (bfd_vma) -1
1971 && (h->got.offset & 2) == 0) /* Homemade TLS check. */
1975 Elf_Internal_Rela rela;
1977 /* This symbol has an entry in the global offset table. Set it
1980 srela = htab->srelgot;
1981 BFD_ASSERT (sgot != NULL && srela != NULL);
1983 rela.r_offset = (sgot->output_section->vma
1984 + sgot->output_offset
1985 + (h->got.offset &~ 1));
1987 /* If this is a -Bsymbolic link, and the symbol is defined
1988 locally, we just want to emit a RELATIVE reloc. Likewise if
1989 the symbol was forced to be local because of a version file.
1990 The entry in the global offset table will already have been
1991 initialized in the relocate_section function. */
1992 if (info->shared && SYMBOL_REFERENCES_LOCAL (info, h))
1994 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1995 rela.r_addend = (h->root.u.def.value
1996 + h->root.u.def.section->output_section->vma
1997 + h->root.u.def.section->output_offset);
2001 BFD_ASSERT ((h->got.offset & 1) == 0);
2002 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2003 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
2007 loc = srela->contents;
2008 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
2009 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2010 ++srela->reloc_count;
2016 Elf_Internal_Rela rela;
2018 /* This symbols needs a copy reloc. Set it up. */
2019 BFD_ASSERT (h->dynindx != -1
2020 && (h->root.type == bfd_link_hash_defined
2021 || h->root.type == bfd_link_hash_defweak));
2023 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2025 BFD_ASSERT (s != NULL);
2027 rela.r_offset = (h->root.u.def.value
2028 + h->root.u.def.section->output_section->vma
2029 + h->root.u.def.section->output_offset);
2030 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
2033 loc += s->reloc_count * sizeof (Elf32_External_Rela);
2034 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2038 /* Mark some specially defined symbols as absolute. */
2039 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2040 || h == htab->root.hgot)
2041 sym->st_shndx = SHN_ABS;
2046 static enum elf_reloc_type_class
2047 or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2048 const asection *rel_sec ATTRIBUTE_UNUSED,
2049 const Elf_Internal_Rela *rela)
2051 switch ((int) ELF32_R_TYPE (rela->r_info))
2053 case R_OR1K_RELATIVE: return reloc_class_relative;
2054 case R_OR1K_JMP_SLOT: return reloc_class_plt;
2055 case R_OR1K_COPY: return reloc_class_copy;
2056 default: return reloc_class_normal;
2060 /* Adjust a symbol defined by a dynamic object and referenced by a
2061 regular object. The current definition is in some section of the
2062 dynamic object, but we're not including those sections. We have to
2063 change the definition to something the rest of the link can
2067 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2068 struct elf_link_hash_entry *h)
2070 struct elf_or1k_link_hash_table *htab;
2071 struct elf_or1k_link_hash_entry *eh;
2072 struct elf_or1k_dyn_relocs *p;
2076 dynobj = elf_hash_table (info)->dynobj;
2078 /* Make sure we know what is going on here. */
2079 BFD_ASSERT (dynobj != NULL
2081 || h->u.weakdef != NULL
2084 && !h->def_regular)));
2086 /* If this is a function, put it in the procedure linkage table. We
2087 will fill in the contents of the procedure linkage table later,
2088 when we know the address of the .got section. */
2089 if (h->type == STT_FUNC
2095 && h->root.type != bfd_link_hash_undefweak
2096 && h->root.type != bfd_link_hash_undefined)
2098 /* This case can occur if we saw a PLT reloc in an input
2099 file, but the symbol was never referred to by a dynamic
2100 object. In such a case, we don't actually need to build
2101 a procedure linkage table, and we can just do a PCREL
2103 h->plt.offset = (bfd_vma) -1;
2110 h->plt.offset = (bfd_vma) -1;
2112 /* If this is a weak symbol, and there is a real definition, the
2113 processor independent code will have arranged for us to see the
2114 real definition first, and we can just use the same value. */
2115 if (h->u.weakdef != NULL)
2117 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2118 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2119 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2120 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2124 /* This is a reference to a symbol defined by a dynamic object which
2125 is not a function. */
2127 /* If we are creating a shared library, we must presume that the
2128 only references to the symbol are via the global offset table.
2129 For such cases we need not do anything here; the relocations will
2130 be handled correctly by relocate_section. */
2134 /* If there are no references to this symbol that do not use the
2135 GOT, we don't need to generate a copy reloc. */
2136 if (!h->non_got_ref)
2139 /* If -z nocopyreloc was given, we won't generate them either. */
2140 if (info->nocopyreloc)
2146 eh = (struct elf_or1k_link_hash_entry *) h;
2147 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2149 s = p->sec->output_section;
2150 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2154 /* If we didn't find any dynamic relocs in sections which needs the
2155 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2163 /* We must allocate the symbol in our .dynbss section, which will
2164 become part of the .bss section of the executable. There will be
2165 an entry for this symbol in the .dynsym section. The dynamic
2166 object will contain position independent code, so all references
2167 from the dynamic object to this symbol will go through the global
2168 offset table. The dynamic linker will use the .dynsym entry to
2169 determine the address it must put in the global offset table, so
2170 both the dynamic object and the regular object will refer to the
2171 same memory location for the variable. */
2173 htab = or1k_elf_hash_table (info);
2178 BFD_ASSERT (s != NULL);
2180 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2181 to copy the initial value out of the dynamic object and into the
2182 runtime process image. We need to remember the offset into the
2183 .rela.bss section we are going to use. */
2184 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2188 srel = htab->srelbss;
2189 BFD_ASSERT (srel != NULL);
2190 srel->size += sizeof (Elf32_External_Rela);
2194 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2197 /* Allocate space in .plt, .got and associated reloc sections for
2201 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2203 struct bfd_link_info *info;
2204 struct elf_or1k_link_hash_table *htab;
2205 struct elf_or1k_link_hash_entry *eh;
2206 struct elf_or1k_dyn_relocs *p;
2208 if (h->root.type == bfd_link_hash_indirect)
2211 info = (struct bfd_link_info *) inf;
2212 htab = or1k_elf_hash_table (info);
2216 eh = (struct elf_or1k_link_hash_entry *) h;
2218 if (htab->root.dynamic_sections_created
2219 && h->plt.refcount > 0)
2221 /* Make sure this symbol is output as a dynamic symbol.
2222 Undefined weak syms won't yet be marked as dynamic. */
2223 if (h->dynindx == -1
2224 && !h->forced_local)
2226 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2230 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2232 asection *s = htab->splt;
2234 /* If this is the first .plt entry, make room for the special
2237 s->size = PLT_ENTRY_SIZE;
2239 h->plt.offset = s->size;
2241 /* If this symbol is not defined in a regular file, and we are
2242 not generating a shared library, then set the symbol to this
2243 location in the .plt. This is required to make function
2244 pointers compare as equal between the normal executable and
2245 the shared library. */
2249 h->root.u.def.section = s;
2250 h->root.u.def.value = h->plt.offset;
2253 /* Make room for this entry. */
2254 s->size += PLT_ENTRY_SIZE;
2256 /* We also need to make an entry in the .got.plt section, which
2257 will be placed in the .got section by the linker script. */
2258 htab->sgotplt->size += 4;
2260 /* We also need to make an entry in the .rel.plt section. */
2261 htab->srelplt->size += sizeof (Elf32_External_Rela);
2265 h->plt.offset = (bfd_vma) -1;
2271 h->plt.offset = (bfd_vma) -1;
2275 if (h->got.refcount > 0)
2279 unsigned char tls_type;
2281 /* Make sure this symbol is output as a dynamic symbol.
2282 Undefined weak syms won't yet be marked as dynamic. */
2283 if (h->dynindx == -1
2284 && !h->forced_local)
2286 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2292 h->got.offset = s->size;
2294 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
2296 /* TLS GD requires two GOT and two relocs. */
2297 if (tls_type == TLS_GD)
2301 dyn = htab->root.dynamic_sections_created;
2302 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2304 if (tls_type == TLS_GD)
2305 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2307 htab->srelgot->size += sizeof (Elf32_External_Rela);
2311 h->got.offset = (bfd_vma) -1;
2313 if (eh->dyn_relocs == NULL)
2316 /* In the shared -Bsymbolic case, discard space allocated for
2317 dynamic pc-relative relocs against symbols which turn out to be
2318 defined in regular objects. For the normal shared case, discard
2319 space for pc-relative relocs that have become local due to symbol
2320 visibility changes. */
2324 if (SYMBOL_CALLS_LOCAL (info, h))
2326 struct elf_or1k_dyn_relocs **pp;
2328 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2330 p->count -= p->pc_count;
2339 /* Also discard relocs on undefined weak syms with non-default
2341 if (eh->dyn_relocs != NULL
2342 && h->root.type == bfd_link_hash_undefweak)
2344 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2345 eh->dyn_relocs = NULL;
2347 /* Make sure undefined weak symbols are output as a dynamic
2349 else if (h->dynindx == -1
2350 && !h->forced_local)
2352 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2359 /* For the non-shared case, discard space for relocs against
2360 symbols which turn out to need copy relocs or are not
2366 || (htab->root.dynamic_sections_created
2367 && (h->root.type == bfd_link_hash_undefweak
2368 || h->root.type == bfd_link_hash_undefined))))
2370 /* Make sure this symbol is output as a dynamic symbol.
2371 Undefined weak syms won't yet be marked as dynamic. */
2372 if (h->dynindx == -1
2373 && !h->forced_local)
2375 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2379 /* If that succeeded, we know we'll be keeping all the
2381 if (h->dynindx != -1)
2385 eh->dyn_relocs = NULL;
2390 /* Finally, allocate space. */
2391 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2393 asection *sreloc = elf_section_data (p->sec)->sreloc;
2394 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2400 /* Find any dynamic relocs that apply to read-only sections. */
2403 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2405 struct elf_or1k_link_hash_entry *eh;
2406 struct elf_or1k_dyn_relocs *p;
2408 eh = (struct elf_or1k_link_hash_entry *) h;
2409 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2411 asection *s = p->sec->output_section;
2413 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2415 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2417 info->flags |= DF_TEXTREL;
2419 /* Not an error, just cut short the traversal. */
2426 /* Set the sizes of the dynamic sections. */
2429 or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2430 struct bfd_link_info *info)
2432 struct elf_or1k_link_hash_table *htab;
2438 htab = or1k_elf_hash_table (info);
2442 dynobj = htab->root.dynobj;
2443 BFD_ASSERT (dynobj != NULL);
2445 if (htab->root.dynamic_sections_created)
2447 /* Set the contents of the .interp section to the interpreter. */
2448 if (info->executable)
2450 s = bfd_get_section_by_name (dynobj, ".interp");
2451 BFD_ASSERT (s != NULL);
2452 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2453 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2457 /* Set up .got offsets for local syms, and space for local dynamic
2459 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2461 bfd_signed_vma *local_got;
2462 bfd_signed_vma *end_local_got;
2463 bfd_size_type locsymcount;
2464 Elf_Internal_Shdr *symtab_hdr;
2465 unsigned char *local_tls_type;
2468 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2471 for (s = ibfd->sections; s != NULL; s = s->next)
2473 struct elf_or1k_dyn_relocs *p;
2475 for (p = ((struct elf_or1k_dyn_relocs *)
2476 elf_section_data (s)->local_dynrel);
2480 if (! bfd_is_abs_section (p->sec)
2481 && bfd_is_abs_section (p->sec->output_section))
2483 /* Input section has been discarded, either because
2484 it is a copy of a linkonce section or due to
2485 linker script /DISCARD/, so we'll be discarding
2488 else if (p->count != 0)
2490 srel = elf_section_data (p->sec)->sreloc;
2491 srel->size += p->count * sizeof (Elf32_External_Rela);
2492 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2493 info->flags |= DF_TEXTREL;
2498 local_got = elf_local_got_refcounts (ibfd);
2502 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2503 locsymcount = symtab_hdr->sh_info;
2504 end_local_got = local_got + locsymcount;
2506 srel = htab->srelgot;
2507 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
2508 for (; local_got < end_local_got; ++local_got)
2512 *local_got = s->size;
2514 /* TLS GD requires two GOT and two relocs. */
2515 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2521 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2522 srel->size += 2 * sizeof (Elf32_External_Rela);
2524 srel->size += sizeof (Elf32_External_Rela);
2529 *local_got = (bfd_vma) -1;
2536 /* Allocate global sym .plt and .got entries, and space for global
2537 sym dynamic relocs. */
2538 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2540 /* We now have determined the sizes of the various dynamic sections.
2541 Allocate memory for them. */
2543 for (s = dynobj->sections; s != NULL; s = s->next)
2545 if ((s->flags & SEC_LINKER_CREATED) == 0)
2550 || s == htab->sgotplt
2551 || s == htab->sdynbss)
2553 /* Strip this section if we don't need it; see the
2556 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2558 if (s->size != 0 && s != htab->srelplt)
2561 /* We use the reloc_count field as a counter if we need
2562 to copy relocs into the output file. */
2566 /* It's not one of our sections, so don't allocate space. */
2571 /* If we don't need this section, strip it from the
2572 output file. This is mostly to handle .rela.bss and
2573 .rela.plt. We must create both sections in
2574 create_dynamic_sections, because they must be created
2575 before the linker maps input sections to output
2576 sections. The linker does that before
2577 adjust_dynamic_symbol is called, and it is that
2578 function which decides whether anything needs to go
2579 into these sections. */
2580 s->flags |= SEC_EXCLUDE;
2584 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2587 /* Allocate memory for the section contents. We use bfd_zalloc
2588 here in case unused entries are not reclaimed before the
2589 section's contents are written out. This should not happen,
2590 but this way if it does, we get a R_OR1K_NONE reloc instead
2592 s->contents = bfd_zalloc (dynobj, s->size);
2594 if (s->contents == NULL)
2598 if (htab->root.dynamic_sections_created)
2600 /* Add some entries to the .dynamic section. We fill in the
2601 values later, in or1k_elf_finish_dynamic_sections, but we
2602 must add the entries now so that we get the correct size for
2603 the .dynamic section. The DT_DEBUG entry is filled in by the
2604 dynamic linker and used by the debugger. */
2605 #define add_dynamic_entry(TAG, VAL) \
2606 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2608 if (info->executable)
2610 if (! add_dynamic_entry (DT_DEBUG, 0))
2614 if (htab->splt->size != 0)
2616 if (! add_dynamic_entry (DT_PLTGOT, 0)
2617 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2618 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2619 || ! add_dynamic_entry (DT_JMPREL, 0))
2625 if (! add_dynamic_entry (DT_RELA, 0)
2626 || ! add_dynamic_entry (DT_RELASZ, 0)
2627 || ! add_dynamic_entry (DT_RELAENT,
2628 sizeof (Elf32_External_Rela)))
2631 /* If any dynamic relocs apply to a read-only section,
2632 then we need a DT_TEXTREL entry. */
2633 if ((info->flags & DF_TEXTREL) == 0)
2634 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2637 if ((info->flags & DF_TEXTREL) != 0)
2639 if (! add_dynamic_entry (DT_TEXTREL, 0))
2645 #undef add_dynamic_entry
2649 /* Create dynamic sections when linking against a dynamic object. */
2652 or1k_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2654 struct elf_or1k_link_hash_table *htab;
2656 htab = or1k_elf_hash_table (info);
2660 if (!htab->sgot && !create_got_section (dynobj, info))
2663 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2666 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2667 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2668 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2670 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2672 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2673 || (!info->shared && !htab->srelbss))
2679 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2682 or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
2683 struct elf_link_hash_entry *dir,
2684 struct elf_link_hash_entry *ind)
2686 struct elf_or1k_link_hash_entry * edir;
2687 struct elf_or1k_link_hash_entry * eind;
2689 edir = (struct elf_or1k_link_hash_entry *) dir;
2690 eind = (struct elf_or1k_link_hash_entry *) ind;
2692 if (eind->dyn_relocs != NULL)
2694 if (edir->dyn_relocs != NULL)
2696 struct elf_or1k_dyn_relocs **pp;
2697 struct elf_or1k_dyn_relocs *p;
2699 /* Add reloc counts against the indirect sym to the direct sym
2700 list. Merge any entries against the same section. */
2701 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2703 struct elf_or1k_dyn_relocs *q;
2705 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2706 if (q->sec == p->sec)
2708 q->pc_count += p->pc_count;
2709 q->count += p->count;
2716 *pp = edir->dyn_relocs;
2719 edir->dyn_relocs = eind->dyn_relocs;
2720 eind->dyn_relocs = NULL;
2723 if (ind->root.type == bfd_link_hash_indirect)
2725 if (dir->got.refcount <= 0)
2727 edir->tls_type = eind->tls_type;
2728 eind->tls_type = TLS_UNKNOWN;
2732 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2735 /* Set the right machine number. */
2738 or1k_elf_object_p (bfd *abfd)
2740 unsigned long mach = bfd_mach_or1k;
2742 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
2743 mach = bfd_mach_or1knd;
2745 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
2748 /* Store the machine number in the flags field. */
2751 or1k_elf_final_write_processing (bfd *abfd,
2752 bfd_boolean linker ATTRIBUTE_UNUSED)
2754 switch (bfd_get_mach (abfd))
2759 case bfd_mach_or1knd:
2760 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
2766 or1k_elf_set_private_flags (bfd *abfd, flagword flags)
2768 BFD_ASSERT (!elf_flags_init (abfd)
2769 || elf_elfheader (abfd)->e_flags == flags);
2771 elf_elfheader (abfd)->e_flags = flags;
2772 elf_flags_init (abfd) = TRUE;
2776 /* Make sure all input files are consistent with respect to
2777 EF_OR1K_NODELAY flag setting. */
2780 elf32_or1k_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2785 in_flags = elf_elfheader (ibfd)->e_flags;
2786 out_flags = elf_elfheader (obfd)->e_flags;
2788 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2789 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2792 if (!elf_flags_init (obfd))
2794 elf_flags_init (obfd) = TRUE;
2795 elf_elfheader (obfd)->e_flags = in_flags;
2800 if (in_flags == out_flags)
2803 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
2805 (*_bfd_error_handler)
2806 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd);
2808 bfd_set_error (bfd_error_bad_value);
2816 #define ELF_ARCH bfd_arch_or1k
2817 #define ELF_MACHINE_CODE EM_OR1K
2818 #define ELF_TARGET_ID OR1K_ELF_DATA
2819 #define ELF_MAXPAGESIZE 0x2000
2821 #define TARGET_BIG_SYM or1k_elf32_vec
2822 #define TARGET_BIG_NAME "elf32-or1k"
2824 #define elf_info_to_howto_rel NULL
2825 #define elf_info_to_howto or1k_info_to_howto_rela
2826 #define elf_backend_relocate_section or1k_elf_relocate_section
2827 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2828 #define elf_backend_gc_sweep_hook or1k_elf_gc_sweep_hook
2829 #define elf_backend_check_relocs or1k_elf_check_relocs
2830 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2831 #define elf_backend_can_gc_sections 1
2832 #define elf_backend_rela_normal 1
2834 #define bfd_elf32_mkobject elf_or1k_mkobject
2836 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2837 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2838 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2839 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2841 #define elf_backend_object_p or1k_elf_object_p
2842 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2843 #define elf_backend_can_refcount 1
2845 #define elf_backend_plt_readonly 1
2846 #define elf_backend_want_got_plt 1
2847 #define elf_backend_want_plt_sym 0
2848 #define elf_backend_got_header_size 12
2849 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2850 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2851 #define elf_backend_create_dynamic_sections or1k_elf_create_dynamic_sections
2852 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2853 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2854 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2855 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2857 #include "elf32-target.h"