1 /* Or1k-specific support for 32-bit ELF.
2 Copyright 2001-2014 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 2, /* 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 BFD_ASSERT (r_type < (unsigned int) R_OR1K_max);
742 cache_ptr->howto = & or1k_elf_howto_table[r_type];
746 /* Return the relocation value for @tpoff relocations.. */
748 tpoff (struct bfd_link_info *info, bfd_vma address)
750 /* If tls_sec is NULL, we should have signalled an error already. */
751 if (elf_hash_table (info)->tls_sec == NULL)
754 /* The thread pointer on or1k stores the address after the TCB where
755 the data is, just compute the difference. No need to compensate
756 for the size of TCB. */
757 return (address - elf_hash_table (info)->tls_sec->vma);
760 /* Relocate an Or1k ELF section.
762 The RELOCATE_SECTION function is called by the new ELF backend linker
763 to handle the relocations for a section.
765 The relocs are always passed as Rela structures; if the section
766 actually uses Rel structures, the r_addend field will always be
769 This function is responsible for adjusting the section contents as
770 necessary, and (if using Rela relocs and generating a relocatable
771 output file) adjusting the reloc addend as necessary.
773 This function does not have to worry about setting the reloc
774 address or the reloc symbol index.
776 LOCAL_SYMS is a pointer to the swapped in local symbols.
778 LOCAL_SECTIONS is an array giving the section in the input file
779 corresponding to the st_shndx field of each local symbol.
781 The global hash table entry for the global symbols can be found
782 via elf_sym_hashes (input_bfd).
784 When generating relocatable output, this function must handle
785 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
786 going to be the section symbol corresponding to the output
787 section, which means that the addend must be adjusted
791 or1k_elf_relocate_section (bfd *output_bfd,
792 struct bfd_link_info *info,
794 asection *input_section,
796 Elf_Internal_Rela *relocs,
797 Elf_Internal_Sym *local_syms,
798 asection **local_sections)
800 Elf_Internal_Shdr *symtab_hdr;
801 struct elf_link_hash_entry **sym_hashes;
802 Elf_Internal_Rela *rel;
803 Elf_Internal_Rela *relend;
804 struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info);
807 bfd_vma *local_got_offsets;
813 dynobj = htab->root.dynobj;
814 local_got_offsets = elf_local_got_offsets (input_bfd);
816 sreloc = elf_section_data (input_section)->sreloc;
820 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
821 sym_hashes = elf_sym_hashes (input_bfd);
822 relend = relocs + input_section->reloc_count;
824 for (rel = relocs; rel < relend; rel++)
826 reloc_howto_type *howto;
827 unsigned long r_symndx;
828 Elf_Internal_Sym *sym;
830 struct elf_link_hash_entry *h;
832 bfd_reloc_status_type r;
833 const char *name = NULL;
836 r_type = ELF32_R_TYPE (rel->r_info);
837 r_symndx = ELF32_R_SYM (rel->r_info);
839 if (r_type == R_OR1K_GNU_VTINHERIT
840 || r_type == R_OR1K_GNU_VTENTRY)
843 if (r_type < 0 || r_type >= (int) R_OR1K_max)
845 bfd_set_error (bfd_error_bad_value);
849 howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info);
854 if (r_symndx < symtab_hdr->sh_info)
856 sym = local_syms + r_symndx;
857 sec = local_sections[r_symndx];
858 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
860 name = bfd_elf_string_from_elf_section
861 (input_bfd, symtab_hdr->sh_link, sym->st_name);
862 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
866 bfd_boolean unresolved_reloc, warned, ignored;
868 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
869 r_symndx, symtab_hdr, sym_hashes,
871 unresolved_reloc, warned, ignored);
874 if (sec != NULL && discarded_section (sec))
875 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
876 rel, 1, relend, howto, 0, contents);
878 if (info->relocatable)
885 if (htab->splt != NULL && h != NULL
886 && h->plt.offset != (bfd_vma) -1)
888 relocation = (htab->splt->output_section->vma
889 + htab->splt->output_offset
896 /* Relocation is to the entry for this symbol in the global
898 BFD_ASSERT (sgot != NULL);
905 BFD_ASSERT (off != (bfd_vma) -1);
907 dyn = htab->root.dynamic_sections_created;
908 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
915 /* This is actually a static link, or it is a
916 -Bsymbolic link and the symbol is defined
917 locally, or the symbol was forced to be local
918 because of a version file. We must initialize
919 this entry in the global offset table. Since the
920 offset must always be a multiple of 4, we use the
921 least significant bit to record whether we have
922 initialized it already.
924 When doing a dynamic link, we create a .rela.got
925 relocation entry to initialize the value. This
926 is done in the finish_dynamic_symbol routine. */
931 /* Write entry in GOT. */
932 bfd_put_32 (output_bfd, relocation,
933 sgot->contents + off);
934 /* Mark GOT entry as having been written. */
939 relocation = sgot->output_offset + off;
946 BFD_ASSERT (local_got_offsets != NULL
947 && local_got_offsets[r_symndx] != (bfd_vma) -1);
949 /* Get offset into GOT table. */
950 off = local_got_offsets[r_symndx];
952 /* The offset must always be a multiple of 4. We use
953 the least significant bit to record whether we have
954 already processed this entry. */
959 /* Write entry in GOT. */
960 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
964 Elf_Internal_Rela outrel;
966 /* We need to generate a R_OR1K_RELATIVE reloc
967 for the dynamic linker. */
968 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
969 BFD_ASSERT (srelgot != NULL);
971 outrel.r_offset = (sgot->output_section->vma
972 + sgot->output_offset
974 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
975 outrel.r_addend = relocation;
976 loc = srelgot->contents;
977 loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
978 bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
979 ++srelgot->reloc_count;
982 local_got_offsets[r_symndx] |= 1;
984 relocation = sgot->output_offset + off;
987 /* Addend should be zero. */
988 if (rel->r_addend != 0)
989 (*_bfd_error_handler)
990 (_("internal error: addend should be zero for R_OR1K_GOT16"));
994 case R_OR1K_GOTOFF_LO16:
995 case R_OR1K_GOTOFF_HI16:
996 /* Relocation is offset from GOT. */
997 BFD_ASSERT (sgot != NULL);
998 relocation -= sgot->output_section->vma;
1001 case R_OR1K_INSN_REL_26:
1002 case R_OR1K_HI_16_IN_INSN:
1003 case R_OR1K_LO_16_IN_INSN:
1007 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1008 from removed linkonce sections, or sections discarded by
1010 if (r_symndx == STN_UNDEF
1011 || (input_section->flags & SEC_ALLOC) == 0)
1016 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1017 || h->root.type != bfd_link_hash_undefweak)
1018 && (!howto->pc_relative
1022 || !h->def_regular))))
1029 || h->root.type == bfd_link_hash_undefweak
1030 || h->root.type == bfd_link_hash_undefined)))
1032 Elf_Internal_Rela outrel;
1036 /* When generating a shared object, these relocations
1037 are copied into the output file to be resolved at run
1040 BFD_ASSERT (sreloc != NULL);
1045 _bfd_elf_section_offset (output_bfd, info, input_section,
1047 if (outrel.r_offset == (bfd_vma) -1)
1049 else if (outrel.r_offset == (bfd_vma) -2)
1051 outrel.r_offset += (input_section->output_section->vma
1052 + input_section->output_offset);
1055 memset (&outrel, 0, sizeof outrel);
1056 /* h->dynindx may be -1 if the symbol was marked to
1059 && ((! info->symbolic && h->dynindx != -1)
1060 || !h->def_regular))
1062 BFD_ASSERT (h->dynindx != -1);
1063 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1064 outrel.r_addend = rel->r_addend;
1068 if (r_type == R_OR1K_32)
1070 outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
1071 outrel.r_addend = relocation + rel->r_addend;
1076 (*_bfd_error_handler)
1077 (_("%B: probably compiled without -fPIC?"),
1079 bfd_set_error (bfd_error_bad_value);
1084 loc = sreloc->contents;
1085 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1086 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1092 case R_OR1K_TLS_LDM_HI16:
1093 case R_OR1K_TLS_LDM_LO16:
1094 case R_OR1K_TLS_LDO_HI16:
1095 case R_OR1K_TLS_LDO_LO16:
1096 /* TODO: implement support for local dynamic. */
1098 (*_bfd_error_handler)
1099 (_("%B: support for local dynamic not implemented"),
1101 bfd_set_error (bfd_error_bad_value);
1105 case R_OR1K_TLS_GD_HI16:
1106 case R_OR1K_TLS_GD_LO16:
1107 case R_OR1K_TLS_IE_HI16:
1108 case R_OR1K_TLS_IE_LO16:
1111 Elf_Internal_Rela rela;
1115 sreloc = bfd_get_section_by_name (dynobj, ".rela.got");
1117 /* Mark as TLS related GOT entry by setting
1118 bit 2 as well as bit 1. */
1121 gotoff = h->got.offset;
1126 gotoff = local_got_offsets[r_symndx];
1127 local_got_offsets[r_symndx] |= 3;
1130 /* Only process the relocation once. */
1133 relocation = sgot->output_offset + (gotoff & ~3);
1137 BFD_ASSERT (elf_hash_table (info)->hgot == NULL
1138 || elf_hash_table (info)->hgot->root.u.def.value == 0);
1140 /* Dynamic entries will require relocations. if we do not need
1141 them we will just use the default R_OR1K_NONE and
1142 not set anything. */
1143 dynamic = info->shared
1144 || (sec && (sec->flags & SEC_ALLOC) != 0
1146 && (h->root.type == bfd_link_hash_defweak || !h->def_regular));
1149 if (dynamic && (howto->type == R_OR1K_TLS_GD_HI16
1150 || howto->type == R_OR1K_TLS_GD_LO16))
1154 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1155 for (i = 0; i < 2; ++i)
1157 rela.r_offset = sgot->output_section->vma +
1158 sgot->output_offset + gotoff + i*4;
1159 if (h != NULL && h->dynindx != -1)
1161 rela.r_info = ELF32_R_INFO (h->dynindx,
1162 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1167 rela.r_info = ELF32_R_INFO (0,
1168 (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
1169 rela.r_addend = tpoff (info, relocation);
1172 loc = sreloc->contents;
1173 loc += sreloc->reloc_count++ *
1174 sizeof (Elf32_External_Rela);
1176 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1177 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4);
1181 else if (howto->type == R_OR1K_TLS_GD_HI16
1182 || howto->type == R_OR1K_TLS_GD_LO16)
1184 bfd_put_32 (output_bfd, 1, sgot->contents + gotoff);
1185 bfd_put_32 (output_bfd, tpoff (info, relocation),
1186 sgot->contents + gotoff + 4);
1191 /* Add TPOFF GOT and rela entries. */
1192 rela.r_offset = sgot->output_section->vma +
1193 sgot->output_offset + gotoff;
1194 if (h != NULL && h->dynindx != -1)
1196 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF);
1201 rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF);
1202 rela.r_addend = tpoff (info, relocation);
1205 loc = sreloc->contents;
1206 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1208 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1209 bfd_put_32 (output_bfd, 0, sgot->contents + gotoff);
1214 bfd_put_32 (output_bfd, tpoff (info, relocation),
1215 sgot->contents + gotoff);
1217 relocation = sgot->output_offset + gotoff;
1220 case R_OR1K_TLS_LE_HI16:
1221 case R_OR1K_TLS_LE_LO16:
1223 /* Relocation is offset from TP. */
1224 relocation = tpoff (info, relocation);
1227 case R_OR1K_TLS_DTPMOD:
1228 case R_OR1K_TLS_DTPOFF:
1229 case R_OR1K_TLS_TPOFF:
1230 /* These are resolved dynamically on load and shouldn't
1231 be used as linker input. */
1233 (*_bfd_error_handler)
1234 (_("%B: will not resolve runtime TLS relocation"),
1236 bfd_set_error (bfd_error_bad_value);
1242 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
1243 rel->r_offset, relocation, rel->r_addend);
1245 if (r != bfd_reloc_ok)
1247 const char *msg = NULL;
1251 case bfd_reloc_overflow:
1252 r = info->callbacks->reloc_overflow
1253 (info, (h ? &h->root : NULL), name, howto->name,
1254 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1257 case bfd_reloc_undefined:
1258 r = info->callbacks->undefined_symbol
1259 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
1262 case bfd_reloc_outofrange:
1263 msg = _("internal error: out of range error");
1266 case bfd_reloc_notsupported:
1267 msg = _("internal error: unsupported relocation error");
1270 case bfd_reloc_dangerous:
1271 msg = _("internal error: dangerous relocation");
1275 msg = _("internal error: unknown error");
1280 r = info->callbacks->warning
1281 (info, msg, name, input_bfd, input_section, rel->r_offset);
1291 /* Return the section that should be marked against GC for a given
1295 or1k_elf_gc_mark_hook (asection *sec,
1296 struct bfd_link_info *info,
1297 Elf_Internal_Rela *rel,
1298 struct elf_link_hash_entry *h,
1299 Elf_Internal_Sym *sym)
1302 switch (ELF32_R_TYPE (rel->r_info))
1304 case R_OR1K_GNU_VTINHERIT:
1305 case R_OR1K_GNU_VTENTRY:
1309 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1313 or1k_elf_gc_sweep_hook (bfd *abfd,
1314 struct bfd_link_info *info ATTRIBUTE_UNUSED,
1316 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
1318 /* Update the got entry reference counts for the section being removed. */
1319 Elf_Internal_Shdr *symtab_hdr;
1320 struct elf_link_hash_entry **sym_hashes;
1321 bfd_signed_vma *local_got_refcounts;
1322 const Elf_Internal_Rela *rel, *relend;
1324 elf_section_data (sec)->local_dynrel = NULL;
1326 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1327 sym_hashes = elf_sym_hashes (abfd);
1328 local_got_refcounts = elf_local_got_refcounts (abfd);
1330 relend = relocs + sec->reloc_count;
1331 for (rel = relocs; rel < relend; rel++)
1333 unsigned long r_symndx;
1334 struct elf_link_hash_entry *h = NULL;
1336 r_symndx = ELF32_R_SYM (rel->r_info);
1337 if (r_symndx >= symtab_hdr->sh_info)
1339 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1340 while (h->root.type == bfd_link_hash_indirect
1341 || h->root.type == bfd_link_hash_warning)
1342 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1345 switch (ELF32_R_TYPE (rel->r_info))
1350 if (h->got.refcount > 0)
1355 if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
1356 local_got_refcounts[r_symndx]--;
1367 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1368 shortcuts to them in our hash table. */
1371 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1373 struct elf_or1k_link_hash_table *htab;
1376 /* This function may be called more than once. */
1377 s = bfd_get_section_by_name (dynobj, ".got");
1378 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
1381 htab = or1k_elf_hash_table (info);
1385 if (! _bfd_elf_create_got_section (dynobj, info))
1388 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1389 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1390 htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1392 if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot)
1395 if (! bfd_set_section_flags (dynobj, htab->srelgot, SEC_ALLOC
1399 | SEC_LINKER_CREATED
1401 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1407 /* Look through the relocs for a section during the first phase. */
1410 or1k_elf_check_relocs (bfd *abfd,
1411 struct bfd_link_info *info,
1413 const Elf_Internal_Rela *relocs)
1415 Elf_Internal_Shdr *symtab_hdr;
1416 struct elf_link_hash_entry **sym_hashes;
1417 const Elf_Internal_Rela *rel;
1419 const Elf_Internal_Rela *rel_end;
1420 struct elf_or1k_link_hash_table *htab;
1422 asection *sreloc = NULL;
1424 if (info->relocatable)
1427 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1428 sym_hashes = elf_sym_hashes (abfd);
1430 htab = or1k_elf_hash_table (info);
1434 dynobj = htab->root.dynobj;
1436 rel_end = relocs + sec->reloc_count;
1437 for (rel = relocs; rel < rel_end; rel++)
1439 struct elf_link_hash_entry *h;
1440 unsigned long r_symndx;
1441 unsigned char tls_type;
1443 r_symndx = ELF32_R_SYM (rel->r_info);
1444 if (r_symndx < symtab_hdr->sh_info)
1448 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1449 while (h->root.type == bfd_link_hash_indirect
1450 || h->root.type == bfd_link_hash_warning)
1451 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1453 /* PR15323, ref flags aren't set for references in the same
1455 h->root.non_ir_ref = 1;
1458 switch (ELF32_R_TYPE (rel->r_info))
1460 case R_OR1K_TLS_GD_HI16:
1461 case R_OR1K_TLS_GD_LO16:
1464 case R_OR1K_TLS_LDM_HI16:
1465 case R_OR1K_TLS_LDM_LO16:
1466 case R_OR1K_TLS_LDO_HI16:
1467 case R_OR1K_TLS_LDO_LO16:
1470 case R_OR1K_TLS_IE_HI16:
1471 case R_OR1K_TLS_IE_LO16:
1474 case R_OR1K_TLS_LE_HI16:
1475 case R_OR1K_TLS_LE_LO16:
1479 tls_type = TLS_NONE;
1482 /* Record TLS type. */
1484 ((struct elf_or1k_link_hash_entry *) h)->tls_type = tls_type;
1487 unsigned char *local_tls_type;
1489 /* This is a TLS type record for a local symbol. */
1490 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd);
1491 if (local_tls_type == NULL)
1495 size = symtab_hdr->sh_info;
1496 local_tls_type = bfd_zalloc (abfd, size);
1497 if (local_tls_type == NULL)
1499 elf_or1k_local_tls_type (abfd) = local_tls_type;
1501 local_tls_type[r_symndx] = tls_type;
1504 switch (ELF32_R_TYPE (rel->r_info))
1506 /* This relocation describes the C++ object vtable hierarchy.
1507 Reconstruct it for later use during GC. */
1508 case R_OR1K_GNU_VTINHERIT:
1509 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1513 /* This relocation describes which C++ vtable entries are actually
1514 used. Record for later use during GC. */
1515 case R_OR1K_GNU_VTENTRY:
1516 BFD_ASSERT (h != NULL);
1518 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1522 /* This relocation requires .plt entry. */
1527 h->plt.refcount += 1;
1532 case R_OR1K_GOTOFF_HI16:
1533 case R_OR1K_GOTOFF_LO16:
1534 case R_OR1K_TLS_GD_HI16:
1535 case R_OR1K_TLS_GD_LO16:
1536 case R_OR1K_TLS_IE_HI16:
1537 case R_OR1K_TLS_IE_LO16:
1538 if (htab->sgot == NULL)
1541 htab->root.dynobj = dynobj = abfd;
1542 if (! create_got_section (dynobj, info))
1546 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_HI16 &&
1547 ELF32_R_TYPE (rel->r_info) != R_OR1K_GOTOFF_LO16)
1550 h->got.refcount += 1;
1553 bfd_signed_vma *local_got_refcounts;
1555 /* This is a global offset table entry for a local symbol. */
1556 local_got_refcounts = elf_local_got_refcounts (abfd);
1557 if (local_got_refcounts == NULL)
1561 size = symtab_hdr->sh_info;
1562 size *= sizeof (bfd_signed_vma);
1563 local_got_refcounts = bfd_zalloc (abfd, size);
1564 if (local_got_refcounts == NULL)
1566 elf_local_got_refcounts (abfd) = local_got_refcounts;
1568 local_got_refcounts[r_symndx] += 1;
1573 case R_OR1K_INSN_REL_26:
1574 case R_OR1K_HI_16_IN_INSN:
1575 case R_OR1K_LO_16_IN_INSN:
1579 if (h != NULL && !info->shared)
1581 /* We may need a copy reloc. */
1584 /* We may also need a .plt entry. */
1585 h->plt.refcount += 1;
1586 if (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26)
1587 h->pointer_equality_needed = 1;
1590 /* If we are creating a shared library, and this is a reloc
1591 against a global symbol, or a non PC relative reloc
1592 against a local symbol, then we need to copy the reloc
1593 into the shared library. However, if we are linking with
1594 -Bsymbolic, we do not need to copy a reloc against a
1595 global symbol which is defined in an object we are
1596 including in the link (i.e., DEF_REGULAR is set). At
1597 this point we have not seen all the input files, so it is
1598 possible that DEF_REGULAR is not set now but will be set
1599 later (it is never cleared). In case of a weak definition,
1600 DEF_REGULAR may be cleared later by a strong definition in
1601 a shared library. We account for that possibility below by
1602 storing information in the relocs_copied field of the hash
1603 table entry. A similar situation occurs when creating
1604 shared libraries and symbol visibility changes render the
1607 If on the other hand, we are creating an executable, we
1608 may need to keep relocations for symbols satisfied by a
1609 dynamic library if we manage to avoid copy relocs for the
1613 && (sec->flags & SEC_ALLOC) != 0
1614 && (ELF32_R_TYPE (rel->r_info) != R_OR1K_INSN_REL_26
1616 && (! info->symbolic
1617 || h->root.type == bfd_link_hash_defweak
1618 || !h->def_regular))))
1620 && (sec->flags & SEC_ALLOC) != 0
1622 && (h->root.type == bfd_link_hash_defweak
1623 || !h->def_regular)))
1625 struct elf_or1k_dyn_relocs *p;
1626 struct elf_or1k_dyn_relocs **head;
1628 /* When creating a shared object, we must copy these
1629 relocs into the output file. We create a reloc
1630 section in dynobj and make room for the reloc. */
1634 unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1635 unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name;
1637 name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
1641 if (strncmp (name, ".rela", 5) != 0
1642 || strcmp (bfd_get_section_name (abfd, sec),
1645 (*_bfd_error_handler)
1646 (_("%B: bad relocation section name `%s\'"),
1650 if (htab->root.dynobj == NULL)
1651 htab->root.dynobj = abfd;
1652 dynobj = htab->root.dynobj;
1654 sreloc = bfd_get_section_by_name (dynobj, name);
1657 sreloc = _bfd_elf_make_dynamic_reloc_section
1658 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
1663 elf_section_data (sec)->sreloc = sreloc;
1666 /* If this is a global symbol, we count the number of
1667 relocations we need for this symbol. */
1669 head = &((struct elf_or1k_link_hash_entry *) h)->dyn_relocs;
1672 /* Track dynamic relocs needed for local syms too.
1673 We really need local syms available to do this
1677 Elf_Internal_Sym *isym;
1680 isym = bfd_sym_from_r_symndx (&htab->sym_sec,
1685 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1689 vpp = &elf_section_data (s)->local_dynrel;
1690 head = (struct elf_or1k_dyn_relocs **) vpp;
1694 if (p == NULL || p->sec != sec)
1696 bfd_size_type amt = sizeof *p;
1697 p = ((struct elf_or1k_dyn_relocs *)
1698 bfd_alloc (htab->root.dynobj, amt));
1709 if (ELF32_R_TYPE (rel->r_info) == R_OR1K_INSN_REL_26)
1720 /* Finish up the dynamic sections. */
1723 or1k_elf_finish_dynamic_sections (bfd *output_bfd,
1724 struct bfd_link_info *info)
1727 asection *sdyn, *sgot;
1728 struct elf_or1k_link_hash_table *htab;
1730 htab = or1k_elf_hash_table (info);
1734 dynobj = htab->root.dynobj;
1736 sgot = htab->sgotplt;
1737 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1739 if (htab->root.dynamic_sections_created)
1742 Elf32_External_Dyn *dyncon, *dynconend;
1744 BFD_ASSERT (sgot != NULL && sdyn != NULL);
1746 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1747 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1749 for (; dyncon < dynconend; dyncon++)
1751 Elf_Internal_Dyn dyn;
1754 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1762 s = htab->sgot->output_section;
1763 BFD_ASSERT (s != NULL);
1764 dyn.d_un.d_ptr = s->vma;
1768 s = htab->srelplt->output_section;
1769 BFD_ASSERT (s != NULL);
1770 dyn.d_un.d_ptr = s->vma;
1774 s = htab->srelplt->output_section;
1775 BFD_ASSERT (s != NULL);
1776 dyn.d_un.d_val = s->size;
1780 /* My reading of the SVR4 ABI indicates that the
1781 procedure linkage table relocs (DT_JMPREL) should be
1782 included in the overall relocs (DT_RELA). This is
1783 what Solaris does. However, UnixWare can not handle
1784 that case. Therefore, we override the DT_RELASZ entry
1785 here to make it not include the JMPREL relocs. Since
1786 the linker script arranges for .rela.plt to follow all
1787 other relocation sections, we don't have to worry
1788 about changing the DT_RELA entry. */
1789 if (htab->srelplt != NULL)
1791 /* FIXME: this calculation sometimes produces
1792 wrong result, the problem is that the dyn.d_un.d_val
1793 is not always correct, needs investigation why
1794 that happens. In the meantime, reading the
1795 ".rela.dyn" section by name seems to yield
1798 s = htab->srelplt->output_section;
1799 dyn.d_un.d_val -= s->size;
1802 s = bfd_get_section_by_name (output_bfd, ".rela.dyn");
1803 dyn.d_un.d_val = s ? s->size : 0;
1807 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1811 /* Fill in the first entry in the procedure linkage table. */
1813 if (splt && splt->size > 0)
1817 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0,
1819 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1,
1820 splt->contents + 4);
1821 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2,
1822 splt->contents + 8);
1823 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3,
1824 splt->contents + 12);
1825 bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4,
1826 splt->contents + 16);
1831 /* addr = .got + 4 */
1832 addr = sgot->output_section->vma + sgot->output_offset + 4;
1833 bfd_put_32 (output_bfd,
1834 PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
1836 bfd_put_32 (output_bfd,
1837 PLT0_ENTRY_WORD1 | (addr & 0xffff),
1838 splt->contents + 4);
1839 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
1840 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
1841 bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
1844 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
1848 /* Set the first entry in the global offset table to the address of
1849 the dynamic section. */
1850 if (sgot && sgot->size > 0)
1853 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1855 bfd_put_32 (output_bfd,
1856 sdyn->output_section->vma + sdyn->output_offset,
1858 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1861 if (htab->sgot && htab->sgot->size > 0)
1862 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
1867 /* Finish up dynamic symbol handling. We set the contents of various
1868 dynamic sections here. */
1871 or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
1872 struct bfd_link_info *info,
1873 struct elf_link_hash_entry *h,
1874 Elf_Internal_Sym *sym)
1876 struct elf_or1k_link_hash_table *htab;
1879 htab = or1k_elf_hash_table (info);
1883 if (h->plt.offset != (bfd_vma) -1)
1892 Elf_Internal_Rela rela;
1894 /* This symbol has an entry in the procedure linkage table. Set
1896 BFD_ASSERT (h->dynindx != -1);
1899 sgot = htab->sgotplt;
1900 srela = htab->srelplt;
1901 BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
1903 /* Get the index in the procedure linkage table which
1904 corresponds to this symbol. This is the index of this symbol
1905 in all the symbols for which we are making plt entries. The
1906 first entry in the procedure linkage table is reserved. */
1907 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
1909 /* Get the offset into the .got table of the entry that
1910 corresponds to this function. Each .got entry is 4 bytes.
1911 The first three are reserved. */
1912 got_offset = (plt_index + 3) * 4;
1913 got_addr = got_offset;
1915 /* Fill in the entry in the procedure linkage table. */
1918 got_addr += htab->sgotplt->output_section->vma
1919 + htab->sgotplt->output_offset;
1920 bfd_put_32 (output_bfd, PLT_ENTRY_WORD0 | ((got_addr >> 16) & 0xffff),
1921 splt->contents + h->plt.offset);
1922 bfd_put_32 (output_bfd, PLT_ENTRY_WORD1 | (got_addr & 0xffff),
1923 splt->contents + h->plt.offset + 4);
1924 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
1925 splt->contents + h->plt.offset + 8);
1926 bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD3,
1927 splt->contents + h->plt.offset + 12);
1928 bfd_put_32 (output_bfd, PLT_ENTRY_WORD4
1929 | plt_index * sizeof (Elf32_External_Rela),
1930 splt->contents + h->plt.offset + 16);
1934 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD0 | (got_addr & 0xffff),
1935 splt->contents + h->plt.offset);
1936 bfd_put_32 (output_bfd, PLT_PIC_ENTRY_WORD1
1937 | plt_index * sizeof (Elf32_External_Rela),
1938 splt->contents + h->plt.offset + 4);
1939 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD2,
1940 splt->contents + h->plt.offset + 8);
1941 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD3,
1942 splt->contents + h->plt.offset + 12);
1943 bfd_put_32 (output_bfd, (bfd_vma) PLT_PIC_ENTRY_WORD4,
1944 splt->contents + h->plt.offset + 16);
1947 /* Fill in the entry in the global offset table. */
1948 bfd_put_32 (output_bfd,
1949 (splt->output_section->vma
1950 + splt->output_offset), /* Same offset. */
1951 sgot->contents + got_offset);
1953 /* Fill in the entry in the .rela.plt section. */
1954 rela.r_offset = (sgot->output_section->vma
1955 + sgot->output_offset
1957 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
1959 loc = srela->contents;
1960 loc += plt_index * sizeof (Elf32_External_Rela);
1961 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1963 if (!h->def_regular)
1965 /* Mark the symbol as undefined, rather than as defined in
1966 the .plt section. Leave the value alone. */
1967 sym->st_shndx = SHN_UNDEF;
1972 if (h->got.offset != (bfd_vma) -1
1973 && (h->got.offset & 2) == 0) /* Homemade TLS check. */
1977 Elf_Internal_Rela rela;
1979 /* This symbol has an entry in the global offset table. Set it
1982 srela = htab->srelgot;
1983 BFD_ASSERT (sgot != NULL && srela != NULL);
1985 rela.r_offset = (sgot->output_section->vma
1986 + sgot->output_offset
1987 + (h->got.offset &~ 1));
1989 /* If this is a -Bsymbolic link, and the symbol is defined
1990 locally, we just want to emit a RELATIVE reloc. Likewise if
1991 the symbol was forced to be local because of a version file.
1992 The entry in the global offset table will already have been
1993 initialized in the relocate_section function. */
2000 rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
2001 rela.r_addend = (h->root.u.def.value
2002 + h->root.u.def.section->output_section->vma
2003 + h->root.u.def.section->output_offset);
2007 BFD_ASSERT ((h->got.offset & 1) == 0);
2008 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2009 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
2013 loc = srela->contents;
2014 loc += srela->reloc_count * sizeof (Elf32_External_Rela);
2015 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2016 ++srela->reloc_count;
2022 Elf_Internal_Rela rela;
2024 /* This symbols needs a copy reloc. Set it up. */
2025 BFD_ASSERT (h->dynindx != -1
2026 && (h->root.type == bfd_link_hash_defined
2027 || h->root.type == bfd_link_hash_defweak));
2029 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2031 BFD_ASSERT (s != NULL);
2033 rela.r_offset = (h->root.u.def.value
2034 + h->root.u.def.section->output_section->vma
2035 + h->root.u.def.section->output_offset);
2036 rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
2039 loc += s->reloc_count * sizeof (Elf32_External_Rela);
2040 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2044 /* Mark some specially defined symbols as absolute. */
2045 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2046 || h == htab->root.hgot)
2047 sym->st_shndx = SHN_ABS;
2052 static enum elf_reloc_type_class
2053 or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2054 const asection *rel_sec ATTRIBUTE_UNUSED,
2055 const Elf_Internal_Rela *rela)
2057 switch ((int) ELF32_R_TYPE (rela->r_info))
2059 case R_OR1K_RELATIVE: return reloc_class_relative;
2060 case R_OR1K_JMP_SLOT: return reloc_class_plt;
2061 case R_OR1K_COPY: return reloc_class_copy;
2062 default: return reloc_class_normal;
2066 /* Adjust a symbol defined by a dynamic object and referenced by a
2067 regular object. The current definition is in some section of the
2068 dynamic object, but we're not including those sections. We have to
2069 change the definition to something the rest of the link can
2073 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2074 struct elf_link_hash_entry *h)
2076 struct elf_or1k_link_hash_table *htab;
2077 struct elf_or1k_link_hash_entry *eh;
2078 struct elf_or1k_dyn_relocs *p;
2082 dynobj = elf_hash_table (info)->dynobj;
2084 /* Make sure we know what is going on here. */
2085 BFD_ASSERT (dynobj != NULL
2087 || h->u.weakdef != NULL
2090 && !h->def_regular)));
2092 /* If this is a function, put it in the procedure linkage table. We
2093 will fill in the contents of the procedure linkage table later,
2094 when we know the address of the .got section. */
2095 if (h->type == STT_FUNC
2101 && h->root.type != bfd_link_hash_undefweak
2102 && h->root.type != bfd_link_hash_undefined)
2104 /* This case can occur if we saw a PLT reloc in an input
2105 file, but the symbol was never referred to by a dynamic
2106 object. In such a case, we don't actually need to build
2107 a procedure linkage table, and we can just do a PCREL
2109 h->plt.offset = (bfd_vma) -1;
2116 h->plt.offset = (bfd_vma) -1;
2118 /* If this is a weak symbol, and there is a real definition, the
2119 processor independent code will have arranged for us to see the
2120 real definition first, and we can just use the same value. */
2121 if (h->u.weakdef != NULL)
2123 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2124 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2125 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2126 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2130 /* This is a reference to a symbol defined by a dynamic object which
2131 is not a function. */
2133 /* If we are creating a shared library, we must presume that the
2134 only references to the symbol are via the global offset table.
2135 For such cases we need not do anything here; the relocations will
2136 be handled correctly by relocate_section. */
2140 /* If there are no references to this symbol that do not use the
2141 GOT, we don't need to generate a copy reloc. */
2142 if (!h->non_got_ref)
2145 /* If -z nocopyreloc was given, we won't generate them either. */
2146 if (info->nocopyreloc)
2152 eh = (struct elf_or1k_link_hash_entry *) h;
2153 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2155 s = p->sec->output_section;
2156 if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
2160 /* If we didn't find any dynamic relocs in sections which needs the
2161 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2169 /* We must allocate the symbol in our .dynbss section, which will
2170 become part of the .bss section of the executable. There will be
2171 an entry for this symbol in the .dynsym section. The dynamic
2172 object will contain position independent code, so all references
2173 from the dynamic object to this symbol will go through the global
2174 offset table. The dynamic linker will use the .dynsym entry to
2175 determine the address it must put in the global offset table, so
2176 both the dynamic object and the regular object will refer to the
2177 same memory location for the variable. */
2179 htab = or1k_elf_hash_table (info);
2184 BFD_ASSERT (s != NULL);
2186 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2187 to copy the initial value out of the dynamic object and into the
2188 runtime process image. We need to remember the offset into the
2189 .rela.bss section we are going to use. */
2190 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2194 srel = htab->srelbss;
2195 BFD_ASSERT (srel != NULL);
2196 srel->size += sizeof (Elf32_External_Rela);
2200 return _bfd_elf_adjust_dynamic_copy (h, s);
2203 /* Allocate space in .plt, .got and associated reloc sections for
2207 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2209 struct bfd_link_info *info;
2210 struct elf_or1k_link_hash_table *htab;
2211 struct elf_or1k_link_hash_entry *eh;
2212 struct elf_or1k_dyn_relocs *p;
2214 if (h->root.type == bfd_link_hash_indirect)
2217 info = (struct bfd_link_info *) inf;
2218 htab = or1k_elf_hash_table (info);
2222 eh = (struct elf_or1k_link_hash_entry *) h;
2224 if (htab->root.dynamic_sections_created
2225 && h->plt.refcount > 0)
2227 /* Make sure this symbol is output as a dynamic symbol.
2228 Undefined weak syms won't yet be marked as dynamic. */
2229 if (h->dynindx == -1
2230 && !h->forced_local)
2232 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2236 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2238 asection *s = htab->splt;
2240 /* If this is the first .plt entry, make room for the special
2243 s->size = PLT_ENTRY_SIZE;
2245 h->plt.offset = s->size;
2247 /* If this symbol is not defined in a regular file, and we are
2248 not generating a shared library, then set the symbol to this
2249 location in the .plt. This is required to make function
2250 pointers compare as equal between the normal executable and
2251 the shared library. */
2255 h->root.u.def.section = s;
2256 h->root.u.def.value = h->plt.offset;
2259 /* Make room for this entry. */
2260 s->size += PLT_ENTRY_SIZE;
2262 /* We also need to make an entry in the .got.plt section, which
2263 will be placed in the .got section by the linker script. */
2264 htab->sgotplt->size += 4;
2266 /* We also need to make an entry in the .rel.plt section. */
2267 htab->srelplt->size += sizeof (Elf32_External_Rela);
2271 h->plt.offset = (bfd_vma) -1;
2277 h->plt.offset = (bfd_vma) -1;
2281 if (h->got.refcount > 0)
2285 unsigned char tls_type;
2287 /* Make sure this symbol is output as a dynamic symbol.
2288 Undefined weak syms won't yet be marked as dynamic. */
2289 if (h->dynindx == -1
2290 && !h->forced_local)
2292 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2298 h->got.offset = s->size;
2300 tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
2302 /* TLS GD requires two GOT and two relocs. */
2303 if (tls_type == TLS_GD)
2307 dyn = htab->root.dynamic_sections_created;
2308 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2310 if (tls_type == TLS_GD)
2311 htab->srelgot->size += 2 * sizeof (Elf32_External_Rela);
2313 htab->srelgot->size += sizeof (Elf32_External_Rela);
2317 h->got.offset = (bfd_vma) -1;
2319 if (eh->dyn_relocs == NULL)
2322 /* In the shared -Bsymbolic case, discard space allocated for
2323 dynamic pc-relative relocs against symbols which turn out to be
2324 defined in regular objects. For the normal shared case, discard
2325 space for pc-relative relocs that have become local due to symbol
2326 visibility changes. */
2334 struct elf_or1k_dyn_relocs **pp;
2336 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2338 p->count -= p->pc_count;
2347 /* Also discard relocs on undefined weak syms with non-default
2349 if (eh->dyn_relocs != NULL
2350 && h->root.type == bfd_link_hash_undefweak)
2352 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2353 eh->dyn_relocs = NULL;
2355 /* Make sure undefined weak symbols are output as a dynamic
2357 else if (h->dynindx == -1
2358 && !h->forced_local)
2360 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2367 /* For the non-shared case, discard space for relocs against
2368 symbols which turn out to need copy relocs or are not
2374 || (htab->root.dynamic_sections_created
2375 && (h->root.type == bfd_link_hash_undefweak
2376 || h->root.type == bfd_link_hash_undefined))))
2378 /* Make sure this symbol is output as a dynamic symbol.
2379 Undefined weak syms won't yet be marked as dynamic. */
2380 if (h->dynindx == -1
2381 && !h->forced_local)
2383 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2387 /* If that succeeded, we know we'll be keeping all the
2389 if (h->dynindx != -1)
2393 eh->dyn_relocs = NULL;
2398 /* Finally, allocate space. */
2399 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2401 asection *sreloc = elf_section_data (p->sec)->sreloc;
2402 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2408 /* Find any dynamic relocs that apply to read-only sections. */
2411 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2413 struct elf_or1k_link_hash_entry *eh;
2414 struct elf_or1k_dyn_relocs *p;
2416 eh = (struct elf_or1k_link_hash_entry *) h;
2417 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2419 asection *s = p->sec->output_section;
2421 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2423 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2425 info->flags |= DF_TEXTREL;
2427 /* Not an error, just cut short the traversal. */
2434 /* Set the sizes of the dynamic sections. */
2437 or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2438 struct bfd_link_info *info)
2440 struct elf_or1k_link_hash_table *htab;
2446 htab = or1k_elf_hash_table (info);
2450 dynobj = htab->root.dynobj;
2451 BFD_ASSERT (dynobj != NULL);
2453 if (htab->root.dynamic_sections_created)
2455 /* Set the contents of the .interp section to the interpreter. */
2456 if (info->executable)
2458 s = bfd_get_section_by_name (dynobj, ".interp");
2459 BFD_ASSERT (s != NULL);
2460 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2461 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2465 /* Set up .got offsets for local syms, and space for local dynamic
2467 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2469 bfd_signed_vma *local_got;
2470 bfd_signed_vma *end_local_got;
2471 bfd_size_type locsymcount;
2472 Elf_Internal_Shdr *symtab_hdr;
2473 unsigned char *local_tls_type;
2476 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2479 for (s = ibfd->sections; s != NULL; s = s->next)
2481 struct elf_or1k_dyn_relocs *p;
2483 for (p = ((struct elf_or1k_dyn_relocs *)
2484 elf_section_data (s)->local_dynrel);
2488 if (! bfd_is_abs_section (p->sec)
2489 && bfd_is_abs_section (p->sec->output_section))
2491 /* Input section has been discarded, either because
2492 it is a copy of a linkonce section or due to
2493 linker script /DISCARD/, so we'll be discarding
2496 else if (p->count != 0)
2498 srel = elf_section_data (p->sec)->sreloc;
2499 srel->size += p->count * sizeof (Elf32_External_Rela);
2500 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2501 info->flags |= DF_TEXTREL;
2506 local_got = elf_local_got_refcounts (ibfd);
2510 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2511 locsymcount = symtab_hdr->sh_info;
2512 end_local_got = local_got + locsymcount;
2514 srel = htab->srelgot;
2515 local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
2516 for (; local_got < end_local_got; ++local_got)
2520 *local_got = s->size;
2522 /* TLS GD requires two GOT and two relocs. */
2523 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2529 if (local_tls_type != NULL && *local_tls_type == TLS_GD)
2530 srel->size += 2 * sizeof (Elf32_External_Rela);
2532 srel->size += sizeof (Elf32_External_Rela);
2537 *local_got = (bfd_vma) -1;
2544 /* Allocate global sym .plt and .got entries, and space for global
2545 sym dynamic relocs. */
2546 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2548 /* We now have determined the sizes of the various dynamic sections.
2549 Allocate memory for them. */
2551 for (s = dynobj->sections; s != NULL; s = s->next)
2553 if ((s->flags & SEC_LINKER_CREATED) == 0)
2558 || s == htab->sgotplt
2559 || s == htab->sdynbss)
2561 /* Strip this section if we don't need it; see the
2564 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
2566 if (s->size != 0 && s != htab->srelplt)
2569 /* We use the reloc_count field as a counter if we need
2570 to copy relocs into the output file. */
2574 /* It's not one of our sections, so don't allocate space. */
2579 /* If we don't need this section, strip it from the
2580 output file. This is mostly to handle .rela.bss and
2581 .rela.plt. We must create both sections in
2582 create_dynamic_sections, because they must be created
2583 before the linker maps input sections to output
2584 sections. The linker does that before
2585 adjust_dynamic_symbol is called, and it is that
2586 function which decides whether anything needs to go
2587 into these sections. */
2588 s->flags |= SEC_EXCLUDE;
2592 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2595 /* Allocate memory for the section contents. We use bfd_zalloc
2596 here in case unused entries are not reclaimed before the
2597 section's contents are written out. This should not happen,
2598 but this way if it does, we get a R_OR1K_NONE reloc instead
2600 s->contents = bfd_zalloc (dynobj, s->size);
2602 if (s->contents == NULL)
2606 if (htab->root.dynamic_sections_created)
2608 /* Add some entries to the .dynamic section. We fill in the
2609 values later, in or1k_elf_finish_dynamic_sections, but we
2610 must add the entries now so that we get the correct size for
2611 the .dynamic section. The DT_DEBUG entry is filled in by the
2612 dynamic linker and used by the debugger. */
2613 #define add_dynamic_entry(TAG, VAL) \
2614 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2616 if (info->executable)
2618 if (! add_dynamic_entry (DT_DEBUG, 0))
2622 if (htab->splt->size != 0)
2624 if (! add_dynamic_entry (DT_PLTGOT, 0)
2625 || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2626 || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2627 || ! add_dynamic_entry (DT_JMPREL, 0))
2633 if (! add_dynamic_entry (DT_RELA, 0)
2634 || ! add_dynamic_entry (DT_RELASZ, 0)
2635 || ! add_dynamic_entry (DT_RELAENT,
2636 sizeof (Elf32_External_Rela)))
2639 /* If any dynamic relocs apply to a read-only section,
2640 then we need a DT_TEXTREL entry. */
2641 if ((info->flags & DF_TEXTREL) == 0)
2642 elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2645 if ((info->flags & DF_TEXTREL) != 0)
2647 if (! add_dynamic_entry (DT_TEXTREL, 0))
2653 #undef add_dynamic_entry
2657 /* Create dynamic sections when linking against a dynamic object. */
2660 or1k_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2662 struct elf_or1k_link_hash_table *htab;
2664 htab = or1k_elf_hash_table (info);
2668 if (!htab->sgot && !create_got_section (dynobj, info))
2671 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2674 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2675 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2676 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2678 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2680 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2681 || (!info->shared && !htab->srelbss))
2687 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2690 or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
2691 struct elf_link_hash_entry *dir,
2692 struct elf_link_hash_entry *ind)
2694 struct elf_or1k_link_hash_entry * edir;
2695 struct elf_or1k_link_hash_entry * eind;
2697 edir = (struct elf_or1k_link_hash_entry *) dir;
2698 eind = (struct elf_or1k_link_hash_entry *) ind;
2700 if (eind->dyn_relocs != NULL)
2702 if (edir->dyn_relocs != NULL)
2704 struct elf_or1k_dyn_relocs **pp;
2705 struct elf_or1k_dyn_relocs *p;
2707 /* Add reloc counts against the indirect sym to the direct sym
2708 list. Merge any entries against the same section. */
2709 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2711 struct elf_or1k_dyn_relocs *q;
2713 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2714 if (q->sec == p->sec)
2716 q->pc_count += p->pc_count;
2717 q->count += p->count;
2724 *pp = edir->dyn_relocs;
2727 edir->dyn_relocs = eind->dyn_relocs;
2728 eind->dyn_relocs = NULL;
2731 if (ind->root.type == bfd_link_hash_indirect)
2733 if (dir->got.refcount <= 0)
2735 edir->tls_type = eind->tls_type;
2736 eind->tls_type = TLS_UNKNOWN;
2740 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2743 /* Set the right machine number. */
2746 or1k_elf_object_p (bfd *abfd)
2748 unsigned long mach = bfd_mach_or1k;
2750 if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
2751 mach = bfd_mach_or1knd;
2753 return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
2756 /* Store the machine number in the flags field. */
2759 or1k_elf_final_write_processing (bfd *abfd,
2760 bfd_boolean linker ATTRIBUTE_UNUSED)
2762 switch (bfd_get_mach (abfd))
2767 case bfd_mach_or1knd:
2768 elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
2774 or1k_elf_set_private_flags (bfd *abfd, flagword flags)
2776 BFD_ASSERT (!elf_flags_init (abfd)
2777 || elf_elfheader (abfd)->e_flags == flags);
2779 elf_elfheader (abfd)->e_flags = flags;
2780 elf_flags_init (abfd) = TRUE;
2784 /* Make sure all input files are consistent with respect to
2785 EF_OR1K_NODELAY flag setting. */
2788 elf32_or1k_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2793 in_flags = elf_elfheader (ibfd)->e_flags;
2794 out_flags = elf_elfheader (obfd)->e_flags;
2796 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2797 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2800 if (!elf_flags_init (obfd))
2802 elf_flags_init (obfd) = TRUE;
2803 elf_elfheader (obfd)->e_flags = in_flags;
2808 if (in_flags == out_flags)
2811 if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
2813 (*_bfd_error_handler)
2814 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd);
2816 bfd_set_error (bfd_error_bad_value);
2824 #define ELF_ARCH bfd_arch_or1k
2825 #define ELF_MACHINE_CODE EM_OR1K
2826 #define ELF_TARGET_ID OR1K_ELF_DATA
2827 #define ELF_MAXPAGESIZE 0x2000
2829 #define TARGET_BIG_SYM or1k_elf32_vec
2830 #define TARGET_BIG_NAME "elf32-or1k"
2832 #define elf_info_to_howto_rel NULL
2833 #define elf_info_to_howto or1k_info_to_howto_rela
2834 #define elf_backend_relocate_section or1k_elf_relocate_section
2835 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2836 #define elf_backend_gc_sweep_hook or1k_elf_gc_sweep_hook
2837 #define elf_backend_check_relocs or1k_elf_check_relocs
2838 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2839 #define elf_backend_can_gc_sections 1
2840 #define elf_backend_rela_normal 1
2842 #define bfd_elf32_mkobject elf_or1k_mkobject
2844 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2845 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2846 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2847 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2849 #define elf_backend_object_p or1k_elf_object_p
2850 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2851 #define elf_backend_can_refcount 1
2853 #define elf_backend_plt_readonly 1
2854 #define elf_backend_want_got_plt 1
2855 #define elf_backend_want_plt_sym 0
2856 #define elf_backend_got_header_size 12
2857 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2858 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2859 #define elf_backend_create_dynamic_sections or1k_elf_create_dynamic_sections
2860 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2861 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2862 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2863 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2865 #include "elf32-target.h"