1 /* Or1k-specific support for 32-bit ELF.
2 Copyright (C) 2001-2017 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 TRUE
), /* 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 TRUE
), /* 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 TRUE
), /* 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 #define TLS_UNKNOWN 0
566 /* ELF linker hash entry. */
567 struct elf_or1k_link_hash_entry
569 struct elf_link_hash_entry root
;
571 /* Track dynamic relocs copied for this symbol. */
572 struct elf_dyn_relocs
*dyn_relocs
;
574 /* Track type of TLS access. */
575 unsigned char tls_type
;
578 /* ELF object data. */
579 struct elf_or1k_obj_tdata
581 struct elf_obj_tdata root
;
583 /* tls_type for each local got entry. */
584 unsigned char *local_tls_type
;
587 #define elf_or1k_tdata(abfd) \
588 ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any)
590 #define elf_or1k_local_tls_type(abfd) \
591 (elf_or1k_tdata (abfd)->local_tls_type)
593 /* ELF linker hash table. */
594 struct elf_or1k_link_hash_table
596 struct elf_link_hash_table root
;
598 /* Small local sym to section mapping cache. */
599 struct sym_cache sym_sec
;
602 /* Get the ELF linker hash table from a link_info structure. */
603 #define or1k_elf_hash_table(p) \
604 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
605 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL)
608 elf_or1k_mkobject (bfd
*abfd
)
610 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_or1k_obj_tdata
),
614 /* Create an entry in an or1k ELF linker hash table. */
616 static struct bfd_hash_entry
*
617 or1k_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
618 struct bfd_hash_table
*table
,
621 struct elf_or1k_link_hash_entry
*ret
=
622 (struct elf_or1k_link_hash_entry
*) entry
;
624 /* Allocate the structure if it has not already been allocated by a
627 ret
= bfd_hash_allocate (table
,
628 sizeof (struct elf_or1k_link_hash_entry
));
632 /* Call the allocation method of the superclass. */
633 ret
= ((struct elf_or1k_link_hash_entry
*)
634 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
638 struct elf_or1k_link_hash_entry
*eh
;
640 eh
= (struct elf_or1k_link_hash_entry
*) ret
;
641 eh
->dyn_relocs
= NULL
;
642 eh
->tls_type
= TLS_UNKNOWN
;
645 return (struct bfd_hash_entry
*) ret
;
648 /* Create an or1k ELF linker hash table. */
650 static struct bfd_link_hash_table
*
651 or1k_elf_link_hash_table_create (bfd
*abfd
)
653 struct elf_or1k_link_hash_table
*ret
;
654 bfd_size_type amt
= sizeof (struct elf_or1k_link_hash_table
);
656 ret
= bfd_zmalloc (amt
);
660 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
661 or1k_elf_link_hash_newfunc
,
662 sizeof (struct elf_or1k_link_hash_entry
),
669 return &ret
->root
.root
;
672 static reloc_howto_type
*
673 or1k_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
674 bfd_reloc_code_real_type code
)
678 for (i
= ARRAY_SIZE (or1k_reloc_map
); i
--;)
679 if (or1k_reloc_map
[i
].bfd_reloc_val
== code
)
680 return & or1k_elf_howto_table
[or1k_reloc_map
[i
].or1k_reloc_val
];
685 static reloc_howto_type
*
686 or1k_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
692 i
< (sizeof (or1k_elf_howto_table
)
693 / sizeof (or1k_elf_howto_table
[0]));
695 if (or1k_elf_howto_table
[i
].name
!= NULL
696 && strcasecmp (or1k_elf_howto_table
[i
].name
, r_name
) == 0)
697 return &or1k_elf_howto_table
[i
];
702 /* Set the howto pointer for an Or1k ELF reloc. */
705 or1k_info_to_howto_rela (bfd
* abfd ATTRIBUTE_UNUSED
,
707 Elf_Internal_Rela
* dst
)
711 r_type
= ELF32_R_TYPE (dst
->r_info
);
712 if (r_type
>= (unsigned int) R_OR1K_max
)
714 /* xgettext:c-format */
715 _bfd_error_handler (_("%B: invalid OR1K reloc number: %d"), abfd
, r_type
);
718 cache_ptr
->howto
= & or1k_elf_howto_table
[r_type
];
722 /* Return the relocation value for @tpoff relocations.. */
724 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
726 /* If tls_sec is NULL, we should have signalled an error already. */
727 if (elf_hash_table (info
)->tls_sec
== NULL
)
730 /* The thread pointer on or1k stores the address after the TCB where
731 the data is, just compute the difference. No need to compensate
732 for the size of TCB. */
733 return (address
- elf_hash_table (info
)->tls_sec
->vma
);
736 /* Relocate an Or1k ELF section.
738 The RELOCATE_SECTION function is called by the new ELF backend linker
739 to handle the relocations for a section.
741 The relocs are always passed as Rela structures; if the section
742 actually uses Rel structures, the r_addend field will always be
745 This function is responsible for adjusting the section contents as
746 necessary, and (if using Rela relocs and generating a relocatable
747 output file) adjusting the reloc addend as necessary.
749 This function does not have to worry about setting the reloc
750 address or the reloc symbol index.
752 LOCAL_SYMS is a pointer to the swapped in local symbols.
754 LOCAL_SECTIONS is an array giving the section in the input file
755 corresponding to the st_shndx field of each local symbol.
757 The global hash table entry for the global symbols can be found
758 via elf_sym_hashes (input_bfd).
760 When generating relocatable output, this function must handle
761 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
762 going to be the section symbol corresponding to the output
763 section, which means that the addend must be adjusted
767 or1k_elf_relocate_section (bfd
*output_bfd
,
768 struct bfd_link_info
*info
,
770 asection
*input_section
,
772 Elf_Internal_Rela
*relocs
,
773 Elf_Internal_Sym
*local_syms
,
774 asection
**local_sections
)
776 Elf_Internal_Shdr
*symtab_hdr
;
777 struct elf_link_hash_entry
**sym_hashes
;
778 Elf_Internal_Rela
*rel
;
779 Elf_Internal_Rela
*relend
;
780 struct elf_or1k_link_hash_table
*htab
= or1k_elf_hash_table (info
);
783 bfd_vma
*local_got_offsets
;
789 dynobj
= htab
->root
.dynobj
;
790 local_got_offsets
= elf_local_got_offsets (input_bfd
);
792 sreloc
= elf_section_data (input_section
)->sreloc
;
794 sgot
= htab
->root
.sgot
;
796 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
797 sym_hashes
= elf_sym_hashes (input_bfd
);
798 relend
= relocs
+ input_section
->reloc_count
;
800 for (rel
= relocs
; rel
< relend
; rel
++)
802 reloc_howto_type
*howto
;
803 unsigned long r_symndx
;
804 Elf_Internal_Sym
*sym
;
806 struct elf_link_hash_entry
*h
;
808 bfd_reloc_status_type r
;
809 const char *name
= NULL
;
812 r_type
= ELF32_R_TYPE (rel
->r_info
);
813 r_symndx
= ELF32_R_SYM (rel
->r_info
);
815 if (r_type
== R_OR1K_GNU_VTINHERIT
816 || r_type
== R_OR1K_GNU_VTENTRY
)
819 if (r_type
< 0 || r_type
>= (int) R_OR1K_max
)
821 bfd_set_error (bfd_error_bad_value
);
825 howto
= or1k_elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
830 if (r_symndx
< symtab_hdr
->sh_info
)
832 sym
= local_syms
+ r_symndx
;
833 sec
= local_sections
[r_symndx
];
834 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
836 name
= bfd_elf_string_from_elf_section
837 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
838 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
842 bfd_boolean unresolved_reloc
, warned
, ignored
;
844 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
845 r_symndx
, symtab_hdr
, sym_hashes
,
847 unresolved_reloc
, warned
, ignored
);
850 if (sec
!= NULL
&& discarded_section (sec
))
851 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
852 rel
, 1, relend
, howto
, 0, contents
);
854 if (bfd_link_relocatable (info
))
861 if (htab
->root
.splt
!= NULL
&& h
!= NULL
862 && h
->plt
.offset
!= (bfd_vma
) -1)
864 relocation
= (htab
->root
.splt
->output_section
->vma
865 + htab
->root
.splt
->output_offset
872 /* Relocation is to the entry for this symbol in the global
874 BFD_ASSERT (sgot
!= NULL
);
881 BFD_ASSERT (off
!= (bfd_vma
) -1);
883 dyn
= htab
->root
.dynamic_sections_created
;
884 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
887 || (bfd_link_pic (info
)
888 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
890 /* This is actually a static link, or it is a
891 -Bsymbolic link and the symbol is defined
892 locally, or the symbol was forced to be local
893 because of a version file. We must initialize
894 this entry in the global offset table. Since the
895 offset must always be a multiple of 4, we use the
896 least significant bit to record whether we have
897 initialized it already.
899 When doing a dynamic link, we create a .rela.got
900 relocation entry to initialize the value. This
901 is done in the finish_dynamic_symbol routine. */
906 /* Write entry in GOT. */
907 bfd_put_32 (output_bfd
, relocation
,
908 sgot
->contents
+ off
);
909 /* Mark GOT entry as having been written. */
914 relocation
= sgot
->output_offset
+ off
;
921 BFD_ASSERT (local_got_offsets
!= NULL
922 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
924 /* Get offset into GOT table. */
925 off
= local_got_offsets
[r_symndx
];
927 /* The offset must always be a multiple of 4. We use
928 the least significant bit to record whether we have
929 already processed this entry. */
934 /* Write entry in GOT. */
935 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
936 if (bfd_link_pic (info
))
939 Elf_Internal_Rela outrel
;
941 /* We need to generate a R_OR1K_RELATIVE reloc
942 for the dynamic linker. */
943 srelgot
= htab
->root
.srelgot
;
944 BFD_ASSERT (srelgot
!= NULL
);
946 outrel
.r_offset
= (sgot
->output_section
->vma
947 + sgot
->output_offset
949 outrel
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
950 outrel
.r_addend
= relocation
;
951 loc
= srelgot
->contents
;
952 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
953 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
954 ++srelgot
->reloc_count
;
957 local_got_offsets
[r_symndx
] |= 1;
959 relocation
= sgot
->output_offset
+ off
;
962 /* Addend should be zero. */
963 if (rel
->r_addend
!= 0)
965 (_("internal error: addend should be zero for R_OR1K_GOT16"));
969 case R_OR1K_GOTOFF_LO16
:
970 case R_OR1K_GOTOFF_HI16
:
971 /* Relocation is offset from GOT. */
972 BFD_ASSERT (sgot
!= NULL
);
974 -= (htab
->root
.hgot
->root
.u
.def
.value
975 + htab
->root
.hgot
->root
.u
.def
.section
->output_offset
976 + htab
->root
.hgot
->root
.u
.def
.section
->output_section
->vma
);
979 case R_OR1K_INSN_REL_26
:
980 case R_OR1K_HI_16_IN_INSN
:
981 case R_OR1K_LO_16_IN_INSN
:
985 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
986 from removed linkonce sections, or sections discarded by
988 if (r_symndx
== STN_UNDEF
989 || (input_section
->flags
& SEC_ALLOC
) == 0)
992 if ((bfd_link_pic (info
)
994 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
995 || h
->root
.type
!= bfd_link_hash_undefweak
)
996 && (howto
->type
!= R_OR1K_INSN_REL_26
997 || !SYMBOL_CALLS_LOCAL (info
, h
)))
998 || (!bfd_link_pic (info
)
1004 || h
->root
.type
== bfd_link_hash_undefweak
1005 || h
->root
.type
== bfd_link_hash_undefined
)))
1007 Elf_Internal_Rela outrel
;
1011 /* When generating a shared object, these relocations
1012 are copied into the output file to be resolved at run
1015 BFD_ASSERT (sreloc
!= NULL
);
1020 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1022 if (outrel
.r_offset
== (bfd_vma
) -1)
1024 else if (outrel
.r_offset
== (bfd_vma
) -2)
1026 outrel
.r_offset
+= (input_section
->output_section
->vma
1027 + input_section
->output_offset
);
1030 memset (&outrel
, 0, sizeof outrel
);
1031 /* h->dynindx may be -1 if the symbol was marked to
1034 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1035 || !h
->def_regular
))
1037 BFD_ASSERT (h
->dynindx
!= -1);
1038 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1039 outrel
.r_addend
= rel
->r_addend
;
1043 if (r_type
== R_OR1K_32
)
1045 outrel
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
1046 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1052 (_("%B: probably compiled without -fPIC?"),
1054 bfd_set_error (bfd_error_bad_value
);
1059 loc
= sreloc
->contents
;
1060 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1061 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1067 case R_OR1K_TLS_LDM_HI16
:
1068 case R_OR1K_TLS_LDM_LO16
:
1069 case R_OR1K_TLS_LDO_HI16
:
1070 case R_OR1K_TLS_LDO_LO16
:
1071 /* TODO: implement support for local dynamic. */
1074 (_("%B: support for local dynamic not implemented"),
1076 bfd_set_error (bfd_error_bad_value
);
1080 case R_OR1K_TLS_GD_HI16
:
1081 case R_OR1K_TLS_GD_LO16
:
1082 case R_OR1K_TLS_IE_HI16
:
1083 case R_OR1K_TLS_IE_LO16
:
1086 Elf_Internal_Rela rela
;
1090 sreloc
= bfd_get_section_by_name (dynobj
, ".rela.got");
1092 /* Mark as TLS related GOT entry by setting
1093 bit 2 as well as bit 1. */
1096 gotoff
= h
->got
.offset
;
1101 gotoff
= local_got_offsets
[r_symndx
];
1102 local_got_offsets
[r_symndx
] |= 3;
1105 /* Only process the relocation once. */
1108 relocation
= sgot
->output_offset
+ (gotoff
& ~3);
1112 BFD_ASSERT (elf_hash_table (info
)->hgot
== NULL
1113 || elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0);
1115 /* Dynamic entries will require relocations. if we do not need
1116 them we will just use the default R_OR1K_NONE and
1117 not set anything. */
1118 dynamic
= bfd_link_pic (info
)
1119 || (sec
&& (sec
->flags
& SEC_ALLOC
) != 0
1121 && (h
->root
.type
== bfd_link_hash_defweak
|| !h
->def_regular
));
1124 if (dynamic
&& (howto
->type
== R_OR1K_TLS_GD_HI16
1125 || howto
->type
== R_OR1K_TLS_GD_LO16
))
1129 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1130 for (i
= 0; i
< 2; ++i
)
1132 rela
.r_offset
= sgot
->output_section
->vma
+
1133 sgot
->output_offset
+ gotoff
+ i
*4;
1134 if (h
!= NULL
&& h
->dynindx
!= -1)
1136 rela
.r_info
= ELF32_R_INFO (h
->dynindx
,
1137 (i
== 0 ? R_OR1K_TLS_DTPMOD
: R_OR1K_TLS_DTPOFF
));
1142 rela
.r_info
= ELF32_R_INFO (0,
1143 (i
== 0 ? R_OR1K_TLS_DTPMOD
: R_OR1K_TLS_DTPOFF
));
1144 rela
.r_addend
= tpoff (info
, relocation
);
1147 loc
= sreloc
->contents
;
1148 loc
+= sreloc
->reloc_count
++ *
1149 sizeof (Elf32_External_Rela
);
1151 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1152 bfd_put_32 (output_bfd
, 0, sgot
->contents
+ gotoff
+ i
*4);
1156 else if (howto
->type
== R_OR1K_TLS_GD_HI16
1157 || howto
->type
== R_OR1K_TLS_GD_LO16
)
1159 bfd_put_32 (output_bfd
, 1, sgot
->contents
+ gotoff
);
1160 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1161 sgot
->contents
+ gotoff
+ 4);
1166 /* Add TPOFF GOT and rela entries. */
1167 rela
.r_offset
= sgot
->output_section
->vma
+
1168 sgot
->output_offset
+ gotoff
;
1169 if (h
!= NULL
&& h
->dynindx
!= -1)
1171 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_TLS_TPOFF
);
1176 rela
.r_info
= ELF32_R_INFO (0, R_OR1K_TLS_TPOFF
);
1177 rela
.r_addend
= tpoff (info
, relocation
);
1180 loc
= sreloc
->contents
;
1181 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1183 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1184 bfd_put_32 (output_bfd
, 0, sgot
->contents
+ gotoff
);
1189 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1190 sgot
->contents
+ gotoff
);
1192 relocation
= sgot
->output_offset
+ gotoff
;
1195 case R_OR1K_TLS_LE_HI16
:
1196 case R_OR1K_TLS_LE_LO16
:
1198 /* Relocation is offset from TP. */
1199 relocation
= tpoff (info
, relocation
);
1202 case R_OR1K_TLS_DTPMOD
:
1203 case R_OR1K_TLS_DTPOFF
:
1204 case R_OR1K_TLS_TPOFF
:
1205 /* These are resolved dynamically on load and shouldn't
1206 be used as linker input. */
1209 (_("%B: will not resolve runtime TLS relocation"),
1211 bfd_set_error (bfd_error_bad_value
);
1217 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1218 rel
->r_offset
, relocation
, rel
->r_addend
);
1220 if (r
!= bfd_reloc_ok
)
1222 const char *msg
= NULL
;
1226 case bfd_reloc_overflow
:
1227 (*info
->callbacks
->reloc_overflow
)
1228 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1229 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
1232 case bfd_reloc_undefined
:
1233 (*info
->callbacks
->undefined_symbol
)
1234 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
1237 case bfd_reloc_outofrange
:
1238 msg
= _("internal error: out of range error");
1241 case bfd_reloc_notsupported
:
1242 msg
= _("internal error: unsupported relocation error");
1245 case bfd_reloc_dangerous
:
1246 msg
= _("internal error: dangerous relocation");
1250 msg
= _("internal error: unknown error");
1255 (*info
->callbacks
->warning
) (info
, msg
, name
, input_bfd
,
1256 input_section
, rel
->r_offset
);
1263 /* Return the section that should be marked against GC for a given
1267 or1k_elf_gc_mark_hook (asection
*sec
,
1268 struct bfd_link_info
*info
,
1269 Elf_Internal_Rela
*rel
,
1270 struct elf_link_hash_entry
*h
,
1271 Elf_Internal_Sym
*sym
)
1274 switch (ELF32_R_TYPE (rel
->r_info
))
1276 case R_OR1K_GNU_VTINHERIT
:
1277 case R_OR1K_GNU_VTENTRY
:
1281 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1284 /* Look through the relocs for a section during the first phase. */
1287 or1k_elf_check_relocs (bfd
*abfd
,
1288 struct bfd_link_info
*info
,
1290 const Elf_Internal_Rela
*relocs
)
1292 Elf_Internal_Shdr
*symtab_hdr
;
1293 struct elf_link_hash_entry
**sym_hashes
;
1294 const Elf_Internal_Rela
*rel
;
1296 const Elf_Internal_Rela
*rel_end
;
1297 struct elf_or1k_link_hash_table
*htab
;
1299 asection
*sreloc
= NULL
;
1301 if (bfd_link_relocatable (info
))
1304 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1305 sym_hashes
= elf_sym_hashes (abfd
);
1307 htab
= or1k_elf_hash_table (info
);
1311 dynobj
= htab
->root
.dynobj
;
1313 rel_end
= relocs
+ sec
->reloc_count
;
1314 for (rel
= relocs
; rel
< rel_end
; rel
++)
1316 struct elf_link_hash_entry
*h
;
1317 unsigned long r_symndx
;
1318 unsigned char tls_type
;
1320 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1321 if (r_symndx
< symtab_hdr
->sh_info
)
1325 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1326 while (h
->root
.type
== bfd_link_hash_indirect
1327 || h
->root
.type
== bfd_link_hash_warning
)
1328 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1331 switch (ELF32_R_TYPE (rel
->r_info
))
1333 case R_OR1K_TLS_GD_HI16
:
1334 case R_OR1K_TLS_GD_LO16
:
1337 case R_OR1K_TLS_LDM_HI16
:
1338 case R_OR1K_TLS_LDM_LO16
:
1339 case R_OR1K_TLS_LDO_HI16
:
1340 case R_OR1K_TLS_LDO_LO16
:
1343 case R_OR1K_TLS_IE_HI16
:
1344 case R_OR1K_TLS_IE_LO16
:
1347 case R_OR1K_TLS_LE_HI16
:
1348 case R_OR1K_TLS_LE_LO16
:
1352 tls_type
= TLS_NONE
;
1355 /* Record TLS type. */
1357 ((struct elf_or1k_link_hash_entry
*) h
)->tls_type
= tls_type
;
1360 unsigned char *local_tls_type
;
1362 /* This is a TLS type record for a local symbol. */
1363 local_tls_type
= (unsigned char *) elf_or1k_local_tls_type (abfd
);
1364 if (local_tls_type
== NULL
)
1368 size
= symtab_hdr
->sh_info
;
1369 local_tls_type
= bfd_zalloc (abfd
, size
);
1370 if (local_tls_type
== NULL
)
1372 elf_or1k_local_tls_type (abfd
) = local_tls_type
;
1374 local_tls_type
[r_symndx
] = tls_type
;
1377 switch (ELF32_R_TYPE (rel
->r_info
))
1379 /* This relocation describes the C++ object vtable hierarchy.
1380 Reconstruct it for later use during GC. */
1381 case R_OR1K_GNU_VTINHERIT
:
1382 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1386 /* This relocation describes which C++ vtable entries are actually
1387 used. Record for later use during GC. */
1388 case R_OR1K_GNU_VTENTRY
:
1389 BFD_ASSERT (h
!= NULL
);
1391 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1395 /* This relocation requires .plt entry. */
1400 h
->plt
.refcount
+= 1;
1405 case R_OR1K_GOTOFF_HI16
:
1406 case R_OR1K_GOTOFF_LO16
:
1407 case R_OR1K_TLS_GD_HI16
:
1408 case R_OR1K_TLS_GD_LO16
:
1409 case R_OR1K_TLS_IE_HI16
:
1410 case R_OR1K_TLS_IE_LO16
:
1411 if (htab
->root
.sgot
== NULL
)
1414 htab
->root
.dynobj
= dynobj
= abfd
;
1415 if (!_bfd_elf_create_got_section (dynobj
, info
))
1419 if (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_GOTOFF_HI16
&&
1420 ELF32_R_TYPE (rel
->r_info
) != R_OR1K_GOTOFF_LO16
)
1423 h
->got
.refcount
+= 1;
1426 bfd_signed_vma
*local_got_refcounts
;
1428 /* This is a global offset table entry for a local symbol. */
1429 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1430 if (local_got_refcounts
== NULL
)
1434 size
= symtab_hdr
->sh_info
;
1435 size
*= sizeof (bfd_signed_vma
);
1436 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1437 if (local_got_refcounts
== NULL
)
1439 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1441 local_got_refcounts
[r_symndx
] += 1;
1446 case R_OR1K_INSN_REL_26
:
1447 case R_OR1K_HI_16_IN_INSN
:
1448 case R_OR1K_LO_16_IN_INSN
:
1452 if (h
!= NULL
&& !bfd_link_pic (info
))
1454 /* We may need a copy reloc. */
1457 /* We may also need a .plt entry. */
1458 h
->plt
.refcount
+= 1;
1459 if (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_INSN_REL_26
)
1460 h
->pointer_equality_needed
= 1;
1463 /* If we are creating a shared library, and this is a reloc
1464 against a global symbol, or a non PC relative reloc
1465 against a local symbol, then we need to copy the reloc
1466 into the shared library. However, if we are linking with
1467 -Bsymbolic, we do not need to copy a reloc against a
1468 global symbol which is defined in an object we are
1469 including in the link (i.e., DEF_REGULAR is set). At
1470 this point we have not seen all the input files, so it is
1471 possible that DEF_REGULAR is not set now but will be set
1472 later (it is never cleared). In case of a weak definition,
1473 DEF_REGULAR may be cleared later by a strong definition in
1474 a shared library. We account for that possibility below by
1475 storing information in the relocs_copied field of the hash
1476 table entry. A similar situation occurs when creating
1477 shared libraries and symbol visibility changes render the
1480 If on the other hand, we are creating an executable, we
1481 may need to keep relocations for symbols satisfied by a
1482 dynamic library if we manage to avoid copy relocs for the
1485 if ((bfd_link_pic (info
)
1486 && (sec
->flags
& SEC_ALLOC
) != 0
1487 && (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_INSN_REL_26
1489 && (!SYMBOLIC_BIND (info
, h
)
1490 || h
->root
.type
== bfd_link_hash_defweak
1491 || !h
->def_regular
))))
1492 || (!bfd_link_pic (info
)
1493 && (sec
->flags
& SEC_ALLOC
) != 0
1495 && (h
->root
.type
== bfd_link_hash_defweak
1496 || !h
->def_regular
)))
1498 struct elf_dyn_relocs
*p
;
1499 struct elf_dyn_relocs
**head
;
1501 /* When creating a shared object, we must copy these
1502 relocs into the output file. We create a reloc
1503 section in dynobj and make room for the reloc. */
1507 unsigned int strndx
= elf_elfheader (abfd
)->e_shstrndx
;
1508 unsigned int shnam
= _bfd_elf_single_rel_hdr (sec
)->sh_name
;
1510 name
= bfd_elf_string_from_elf_section (abfd
, strndx
, shnam
);
1514 if (strncmp (name
, ".rela", 5) != 0
1515 || strcmp (bfd_get_section_name (abfd
, sec
),
1519 /* xgettext:c-format */
1520 (_("%B: bad relocation section name `%s\'"),
1524 if (htab
->root
.dynobj
== NULL
)
1525 htab
->root
.dynobj
= abfd
;
1526 dynobj
= htab
->root
.dynobj
;
1528 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1531 sreloc
= _bfd_elf_make_dynamic_reloc_section
1532 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1537 elf_section_data (sec
)->sreloc
= sreloc
;
1540 /* If this is a global symbol, we count the number of
1541 relocations we need for this symbol. */
1543 head
= &((struct elf_or1k_link_hash_entry
*) h
)->dyn_relocs
;
1546 /* Track dynamic relocs needed for local syms too.
1547 We really need local syms available to do this
1551 Elf_Internal_Sym
*isym
;
1554 isym
= bfd_sym_from_r_symndx (&htab
->sym_sec
,
1559 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1563 vpp
= &elf_section_data (s
)->local_dynrel
;
1564 head
= (struct elf_dyn_relocs
**) vpp
;
1568 if (p
== NULL
|| p
->sec
!= sec
)
1570 bfd_size_type amt
= sizeof *p
;
1571 p
= ((struct elf_dyn_relocs
*)
1572 bfd_alloc (htab
->root
.dynobj
, amt
));
1583 if (ELF32_R_TYPE (rel
->r_info
) == R_OR1K_INSN_REL_26
)
1594 /* Finish up the dynamic sections. */
1597 or1k_elf_finish_dynamic_sections (bfd
*output_bfd
,
1598 struct bfd_link_info
*info
)
1601 asection
*sdyn
, *sgot
;
1602 struct elf_or1k_link_hash_table
*htab
;
1604 htab
= or1k_elf_hash_table (info
);
1608 dynobj
= htab
->root
.dynobj
;
1610 sgot
= htab
->root
.sgotplt
;
1611 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1613 if (htab
->root
.dynamic_sections_created
)
1616 Elf32_External_Dyn
*dyncon
, *dynconend
;
1618 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1620 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1621 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1623 for (; dyncon
< dynconend
; dyncon
++)
1625 Elf_Internal_Dyn dyn
;
1628 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1636 s
= htab
->root
.sgotplt
;
1637 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1641 s
= htab
->root
.srelplt
;
1642 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1646 s
= htab
->root
.srelplt
;
1647 dyn
.d_un
.d_val
= s
->size
;
1650 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1654 /* Fill in the first entry in the procedure linkage table. */
1655 splt
= htab
->root
.splt
;
1656 if (splt
&& splt
->size
> 0)
1658 if (bfd_link_pic (info
))
1660 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
,
1662 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
,
1663 splt
->contents
+ 4);
1664 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
,
1665 splt
->contents
+ 8);
1666 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
,
1667 splt
->contents
+ 12);
1668 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
,
1669 splt
->contents
+ 16);
1674 /* addr = .got + 4 */
1675 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1676 bfd_put_32 (output_bfd
,
1677 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1679 bfd_put_32 (output_bfd
,
1680 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1681 splt
->contents
+ 4);
1682 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1683 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1684 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1687 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
1691 /* Set the first entry in the global offset table to the address of
1692 the dynamic section. */
1693 if (sgot
&& sgot
->size
> 0)
1696 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1698 bfd_put_32 (output_bfd
,
1699 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1701 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1704 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
1705 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1710 /* Finish up dynamic symbol handling. We set the contents of various
1711 dynamic sections here. */
1714 or1k_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1715 struct bfd_link_info
*info
,
1716 struct elf_link_hash_entry
*h
,
1717 Elf_Internal_Sym
*sym
)
1719 struct elf_or1k_link_hash_table
*htab
;
1722 htab
= or1k_elf_hash_table (info
);
1726 if (h
->plt
.offset
!= (bfd_vma
) -1)
1735 Elf_Internal_Rela rela
;
1737 /* This symbol has an entry in the procedure linkage table. Set
1739 BFD_ASSERT (h
->dynindx
!= -1);
1741 splt
= htab
->root
.splt
;
1742 sgot
= htab
->root
.sgotplt
;
1743 srela
= htab
->root
.srelplt
;
1744 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1746 /* Get the index in the procedure linkage table which
1747 corresponds to this symbol. This is the index of this symbol
1748 in all the symbols for which we are making plt entries. The
1749 first entry in the procedure linkage table is reserved. */
1750 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1752 /* Get the offset into the .got table of the entry that
1753 corresponds to this function. Each .got entry is 4 bytes.
1754 The first three are reserved. */
1755 got_offset
= (plt_index
+ 3) * 4;
1756 got_addr
= got_offset
;
1758 /* Fill in the entry in the procedure linkage table. */
1759 if (! bfd_link_pic (info
))
1761 got_addr
+= htab
->root
.sgotplt
->output_section
->vma
1762 + htab
->root
.sgotplt
->output_offset
;
1763 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD0
| ((got_addr
>> 16) & 0xffff),
1764 splt
->contents
+ h
->plt
.offset
);
1765 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
| (got_addr
& 0xffff),
1766 splt
->contents
+ h
->plt
.offset
+ 4);
1767 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
1768 splt
->contents
+ h
->plt
.offset
+ 8);
1769 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
1770 splt
->contents
+ h
->plt
.offset
+ 12);
1771 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD4
1772 | plt_index
* sizeof (Elf32_External_Rela
),
1773 splt
->contents
+ h
->plt
.offset
+ 16);
1777 bfd_put_32 (output_bfd
, PLT_PIC_ENTRY_WORD0
| (got_addr
& 0xffff),
1778 splt
->contents
+ h
->plt
.offset
);
1779 bfd_put_32 (output_bfd
, PLT_PIC_ENTRY_WORD1
1780 | plt_index
* sizeof (Elf32_External_Rela
),
1781 splt
->contents
+ h
->plt
.offset
+ 4);
1782 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD2
,
1783 splt
->contents
+ h
->plt
.offset
+ 8);
1784 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD3
,
1785 splt
->contents
+ h
->plt
.offset
+ 12);
1786 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD4
,
1787 splt
->contents
+ h
->plt
.offset
+ 16);
1790 /* Fill in the entry in the global offset table. */
1791 bfd_put_32 (output_bfd
,
1792 (splt
->output_section
->vma
1793 + splt
->output_offset
), /* Same offset. */
1794 sgot
->contents
+ got_offset
);
1796 /* Fill in the entry in the .rela.plt section. */
1797 rela
.r_offset
= (sgot
->output_section
->vma
1798 + sgot
->output_offset
1800 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_JMP_SLOT
);
1802 loc
= srela
->contents
;
1803 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1804 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1806 if (!h
->def_regular
)
1808 /* Mark the symbol as undefined, rather than as defined in
1809 the .plt section. Leave the value alone. */
1810 sym
->st_shndx
= SHN_UNDEF
;
1815 if (h
->got
.offset
!= (bfd_vma
) -1
1816 && (h
->got
.offset
& 2) == 0) /* Homemade TLS check. */
1820 Elf_Internal_Rela rela
;
1822 /* This symbol has an entry in the global offset table. Set it
1824 sgot
= htab
->root
.sgot
;
1825 srela
= htab
->root
.srelgot
;
1826 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1828 rela
.r_offset
= (sgot
->output_section
->vma
1829 + sgot
->output_offset
1830 + (h
->got
.offset
&~ 1));
1832 /* If this is a -Bsymbolic link, and the symbol is defined
1833 locally, we just want to emit a RELATIVE reloc. Likewise if
1834 the symbol was forced to be local because of a version file.
1835 The entry in the global offset table will already have been
1836 initialized in the relocate_section function. */
1837 if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
1839 rela
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
1840 rela
.r_addend
= (h
->root
.u
.def
.value
1841 + h
->root
.u
.def
.section
->output_section
->vma
1842 + h
->root
.u
.def
.section
->output_offset
);
1846 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1847 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1848 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_GLOB_DAT
);
1852 loc
= srela
->contents
;
1853 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1854 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1855 ++srela
->reloc_count
;
1861 Elf_Internal_Rela rela
;
1863 /* This symbols needs a copy reloc. Set it up. */
1864 BFD_ASSERT (h
->dynindx
!= -1
1865 && (h
->root
.type
== bfd_link_hash_defined
1866 || h
->root
.type
== bfd_link_hash_defweak
));
1868 rela
.r_offset
= (h
->root
.u
.def
.value
1869 + h
->root
.u
.def
.section
->output_section
->vma
1870 + h
->root
.u
.def
.section
->output_offset
);
1871 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_COPY
);
1873 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
1874 s
= htab
->root
.sreldynrelro
;
1876 s
= htab
->root
.srelbss
;
1877 loc
= s
->contents
+ s
->reloc_count
* sizeof (Elf32_External_Rela
);
1878 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1882 /* Mark some specially defined symbols as absolute. */
1883 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1884 || h
== htab
->root
.hgot
)
1885 sym
->st_shndx
= SHN_ABS
;
1890 static enum elf_reloc_type_class
1891 or1k_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1892 const asection
*rel_sec ATTRIBUTE_UNUSED
,
1893 const Elf_Internal_Rela
*rela
)
1895 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1897 case R_OR1K_RELATIVE
: return reloc_class_relative
;
1898 case R_OR1K_JMP_SLOT
: return reloc_class_plt
;
1899 case R_OR1K_COPY
: return reloc_class_copy
;
1900 default: return reloc_class_normal
;
1904 /* Find dynamic relocs for H that apply to read-only sections. */
1907 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1909 struct elf_dyn_relocs
*p
;
1910 struct elf_or1k_link_hash_entry
*eh
= (struct elf_or1k_link_hash_entry
*) h
;
1912 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1914 asection
*s
= p
->sec
->output_section
;
1916 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1922 /* Adjust a symbol defined by a dynamic object and referenced by a
1923 regular object. The current definition is in some section of the
1924 dynamic object, but we're not including those sections. We have to
1925 change the definition to something the rest of the link can
1929 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1930 struct elf_link_hash_entry
*h
)
1932 struct elf_or1k_link_hash_table
*htab
;
1936 dynobj
= elf_hash_table (info
)->dynobj
;
1938 /* Make sure we know what is going on here. */
1939 BFD_ASSERT (dynobj
!= NULL
1944 && !h
->def_regular
)));
1946 /* If this is a function, put it in the procedure linkage table. We
1947 will fill in the contents of the procedure linkage table later,
1948 when we know the address of the .got section. */
1949 if (h
->type
== STT_FUNC
1952 if (! bfd_link_pic (info
)
1955 && h
->root
.type
!= bfd_link_hash_undefweak
1956 && h
->root
.type
!= bfd_link_hash_undefined
)
1958 /* This case can occur if we saw a PLT reloc in an input
1959 file, but the symbol was never referred to by a dynamic
1960 object. In such a case, we don't actually need to build
1961 a procedure linkage table, and we can just do a PCREL
1963 h
->plt
.offset
= (bfd_vma
) -1;
1970 h
->plt
.offset
= (bfd_vma
) -1;
1972 /* If this is a weak symbol, and there is a real definition, the
1973 processor independent code will have arranged for us to see the
1974 real definition first, and we can just use the same value. */
1975 if (h
->is_weakalias
)
1977 struct elf_link_hash_entry
*def
= weakdef (h
);
1978 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1979 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1980 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1984 /* This is a reference to a symbol defined by a dynamic object which
1985 is not a function. */
1987 /* If we are creating a shared library, we must presume that the
1988 only references to the symbol are via the global offset table.
1989 For such cases we need not do anything here; the relocations will
1990 be handled correctly by relocate_section. */
1991 if (bfd_link_pic (info
))
1994 /* If there are no references to this symbol that do not use the
1995 GOT, we don't need to generate a copy reloc. */
1996 if (!h
->non_got_ref
)
1999 /* If -z nocopyreloc was given, we won't generate them either. */
2000 if (info
->nocopyreloc
)
2006 /* If we don't find any dynamic relocs in read-only sections, then
2007 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2008 if (!readonly_dynrelocs (h
))
2014 /* We must allocate the symbol in our .dynbss section, which will
2015 become part of the .bss section of the executable. There will be
2016 an entry for this symbol in the .dynsym section. The dynamic
2017 object will contain position independent code, so all references
2018 from the dynamic object to this symbol will go through the global
2019 offset table. The dynamic linker will use the .dynsym entry to
2020 determine the address it must put in the global offset table, so
2021 both the dynamic object and the regular object will refer to the
2022 same memory location for the variable. */
2024 htab
= or1k_elf_hash_table (info
);
2028 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2029 to copy the initial value out of the dynamic object and into the
2030 runtime process image. We need to remember the offset into the
2031 .rela.bss section we are going to use. */
2032 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2034 s
= htab
->root
.sdynrelro
;
2035 srel
= htab
->root
.sreldynrelro
;
2039 s
= htab
->root
.sdynbss
;
2040 srel
= htab
->root
.srelbss
;
2042 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2044 srel
->size
+= sizeof (Elf32_External_Rela
);
2048 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2051 /* Allocate space in .plt, .got and associated reloc sections for
2055 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2057 struct bfd_link_info
*info
;
2058 struct elf_or1k_link_hash_table
*htab
;
2059 struct elf_or1k_link_hash_entry
*eh
;
2060 struct elf_dyn_relocs
*p
;
2062 if (h
->root
.type
== bfd_link_hash_indirect
)
2065 info
= (struct bfd_link_info
*) inf
;
2066 htab
= or1k_elf_hash_table (info
);
2070 eh
= (struct elf_or1k_link_hash_entry
*) h
;
2072 if (htab
->root
.dynamic_sections_created
2073 && h
->plt
.refcount
> 0)
2075 /* Make sure this symbol is output as a dynamic symbol.
2076 Undefined weak syms won't yet be marked as dynamic. */
2077 if (h
->dynindx
== -1
2078 && !h
->forced_local
)
2080 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2084 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
2086 asection
*s
= htab
->root
.splt
;
2088 /* If this is the first .plt entry, make room for the special
2091 s
->size
= PLT_ENTRY_SIZE
;
2093 h
->plt
.offset
= s
->size
;
2095 /* If this symbol is not defined in a regular file, and we are
2096 not generating a shared library, then set the symbol to this
2097 location in the .plt. This is required to make function
2098 pointers compare as equal between the normal executable and
2099 the shared library. */
2100 if (! bfd_link_pic (info
)
2103 h
->root
.u
.def
.section
= s
;
2104 h
->root
.u
.def
.value
= h
->plt
.offset
;
2107 /* Make room for this entry. */
2108 s
->size
+= PLT_ENTRY_SIZE
;
2110 /* We also need to make an entry in the .got.plt section, which
2111 will be placed in the .got section by the linker script. */
2112 htab
->root
.sgotplt
->size
+= 4;
2114 /* We also need to make an entry in the .rel.plt section. */
2115 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2119 h
->plt
.offset
= (bfd_vma
) -1;
2125 h
->plt
.offset
= (bfd_vma
) -1;
2129 if (h
->got
.refcount
> 0)
2133 unsigned char tls_type
;
2135 /* Make sure this symbol is output as a dynamic symbol.
2136 Undefined weak syms won't yet be marked as dynamic. */
2137 if (h
->dynindx
== -1
2138 && !h
->forced_local
)
2140 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2144 s
= htab
->root
.sgot
;
2146 h
->got
.offset
= s
->size
;
2148 tls_type
= ((struct elf_or1k_link_hash_entry
*) h
)->tls_type
;
2150 /* TLS GD requires two GOT and two relocs. */
2151 if (tls_type
== TLS_GD
)
2155 dyn
= htab
->root
.dynamic_sections_created
;
2156 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
2158 if (tls_type
== TLS_GD
)
2159 htab
->root
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
2161 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2165 h
->got
.offset
= (bfd_vma
) -1;
2167 if (eh
->dyn_relocs
== NULL
)
2170 /* In the shared -Bsymbolic case, discard space allocated for
2171 dynamic pc-relative relocs against symbols which turn out to be
2172 defined in regular objects. For the normal shared case, discard
2173 space for pc-relative relocs that have become local due to symbol
2174 visibility changes. */
2176 if (bfd_link_pic (info
))
2178 if (SYMBOL_CALLS_LOCAL (info
, h
))
2180 struct elf_dyn_relocs
**pp
;
2182 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2184 p
->count
-= p
->pc_count
;
2193 /* Also discard relocs on undefined weak syms with non-default
2195 if (eh
->dyn_relocs
!= NULL
2196 && h
->root
.type
== bfd_link_hash_undefweak
)
2198 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2199 eh
->dyn_relocs
= NULL
;
2201 /* Make sure undefined weak symbols are output as a dynamic
2203 else if (h
->dynindx
== -1
2204 && !h
->forced_local
)
2206 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2213 /* For the non-shared case, discard space for relocs against
2214 symbols which turn out to need copy relocs or are not
2220 || (htab
->root
.dynamic_sections_created
2221 && (h
->root
.type
== bfd_link_hash_undefweak
2222 || h
->root
.type
== bfd_link_hash_undefined
))))
2224 /* Make sure this symbol is output as a dynamic symbol.
2225 Undefined weak syms won't yet be marked as dynamic. */
2226 if (h
->dynindx
== -1
2227 && !h
->forced_local
)
2229 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2233 /* If that succeeded, we know we'll be keeping all the
2235 if (h
->dynindx
!= -1)
2239 eh
->dyn_relocs
= NULL
;
2244 /* Finally, allocate space. */
2245 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2247 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2248 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2254 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2255 read-only sections. */
2258 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2262 if (h
->root
.type
== bfd_link_hash_indirect
)
2265 sec
= readonly_dynrelocs (h
);
2268 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2270 info
->flags
|= DF_TEXTREL
;
2271 info
->callbacks
->minfo
2272 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
2273 sec
->owner
, h
->root
.root
.string
, sec
);
2275 /* Not an error, just cut short the traversal. */
2281 /* Set the sizes of the dynamic sections. */
2284 or1k_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2285 struct bfd_link_info
*info
)
2287 struct elf_or1k_link_hash_table
*htab
;
2293 htab
= or1k_elf_hash_table (info
);
2297 dynobj
= htab
->root
.dynobj
;
2298 BFD_ASSERT (dynobj
!= NULL
);
2300 if (htab
->root
.dynamic_sections_created
)
2302 /* Set the contents of the .interp section to the interpreter. */
2303 if (bfd_link_executable (info
) && !info
->nointerp
)
2305 s
= bfd_get_section_by_name (dynobj
, ".interp");
2306 BFD_ASSERT (s
!= NULL
);
2307 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2308 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2312 /* Set up .got offsets for local syms, and space for local dynamic
2314 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2316 bfd_signed_vma
*local_got
;
2317 bfd_signed_vma
*end_local_got
;
2318 bfd_size_type locsymcount
;
2319 Elf_Internal_Shdr
*symtab_hdr
;
2320 unsigned char *local_tls_type
;
2323 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2326 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2328 struct elf_dyn_relocs
*p
;
2330 for (p
= ((struct elf_dyn_relocs
*)
2331 elf_section_data (s
)->local_dynrel
);
2335 if (! bfd_is_abs_section (p
->sec
)
2336 && bfd_is_abs_section (p
->sec
->output_section
))
2338 /* Input section has been discarded, either because
2339 it is a copy of a linkonce section or due to
2340 linker script /DISCARD/, so we'll be discarding
2343 else if (p
->count
!= 0)
2345 srel
= elf_section_data (p
->sec
)->sreloc
;
2346 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2347 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2348 info
->flags
|= DF_TEXTREL
;
2353 local_got
= elf_local_got_refcounts (ibfd
);
2357 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2358 locsymcount
= symtab_hdr
->sh_info
;
2359 end_local_got
= local_got
+ locsymcount
;
2360 s
= htab
->root
.sgot
;
2361 srel
= htab
->root
.srelgot
;
2362 local_tls_type
= (unsigned char *) elf_or1k_local_tls_type (ibfd
);
2363 for (; local_got
< end_local_got
; ++local_got
)
2367 *local_got
= s
->size
;
2369 /* TLS GD requires two GOT and two relocs. */
2370 if (local_tls_type
!= NULL
&& *local_tls_type
== TLS_GD
)
2374 if (bfd_link_pic (info
))
2376 if (local_tls_type
!= NULL
&& *local_tls_type
== TLS_GD
)
2377 srel
->size
+= 2 * sizeof (Elf32_External_Rela
);
2379 srel
->size
+= sizeof (Elf32_External_Rela
);
2384 *local_got
= (bfd_vma
) -1;
2391 /* Allocate global sym .plt and .got entries, and space for global
2392 sym dynamic relocs. */
2393 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2395 /* We now have determined the sizes of the various dynamic sections.
2396 Allocate memory for them. */
2398 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2400 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2403 if (s
== htab
->root
.splt
2404 || s
== htab
->root
.sgot
2405 || s
== htab
->root
.sgotplt
2406 || s
== htab
->root
.sdynbss
2407 || s
== htab
->root
.sdynrelro
)
2409 /* Strip this section if we don't need it; see the
2412 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2414 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2417 /* We use the reloc_count field as a counter if we need
2418 to copy relocs into the output file. */
2422 /* It's not one of our sections, so don't allocate space. */
2427 /* If we don't need this section, strip it from the
2428 output file. This is mostly to handle .rela.bss and
2429 .rela.plt. We must create both sections in
2430 create_dynamic_sections, because they must be created
2431 before the linker maps input sections to output
2432 sections. The linker does that before
2433 adjust_dynamic_symbol is called, and it is that
2434 function which decides whether anything needs to go
2435 into these sections. */
2436 s
->flags
|= SEC_EXCLUDE
;
2440 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2443 /* Allocate memory for the section contents. We use bfd_zalloc
2444 here in case unused entries are not reclaimed before the
2445 section's contents are written out. This should not happen,
2446 but this way if it does, we get a R_OR1K_NONE reloc instead
2448 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2450 if (s
->contents
== NULL
)
2454 if (htab
->root
.dynamic_sections_created
)
2456 /* Add some entries to the .dynamic section. We fill in the
2457 values later, in or1k_elf_finish_dynamic_sections, but we
2458 must add the entries now so that we get the correct size for
2459 the .dynamic section. The DT_DEBUG entry is filled in by the
2460 dynamic linker and used by the debugger. */
2461 #define add_dynamic_entry(TAG, VAL) \
2462 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2464 if (bfd_link_executable (info
))
2466 if (! add_dynamic_entry (DT_DEBUG
, 0))
2470 if (htab
->root
.splt
->size
!= 0)
2472 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2473 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2474 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2475 || ! add_dynamic_entry (DT_JMPREL
, 0))
2481 if (! add_dynamic_entry (DT_RELA
, 0)
2482 || ! add_dynamic_entry (DT_RELASZ
, 0)
2483 || ! add_dynamic_entry (DT_RELAENT
,
2484 sizeof (Elf32_External_Rela
)))
2487 /* If any dynamic relocs apply to a read-only section,
2488 then we need a DT_TEXTREL entry. */
2489 if ((info
->flags
& DF_TEXTREL
) == 0)
2490 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2492 if ((info
->flags
& DF_TEXTREL
) != 0)
2494 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2500 #undef add_dynamic_entry
2504 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2507 or1k_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2508 struct elf_link_hash_entry
*dir
,
2509 struct elf_link_hash_entry
*ind
)
2511 struct elf_or1k_link_hash_entry
* edir
;
2512 struct elf_or1k_link_hash_entry
* eind
;
2514 edir
= (struct elf_or1k_link_hash_entry
*) dir
;
2515 eind
= (struct elf_or1k_link_hash_entry
*) ind
;
2517 if (eind
->dyn_relocs
!= NULL
)
2519 if (edir
->dyn_relocs
!= NULL
)
2521 struct elf_dyn_relocs
**pp
;
2522 struct elf_dyn_relocs
*p
;
2524 /* Add reloc counts against the indirect sym to the direct sym
2525 list. Merge any entries against the same section. */
2526 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2528 struct elf_dyn_relocs
*q
;
2530 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2531 if (q
->sec
== p
->sec
)
2533 q
->pc_count
+= p
->pc_count
;
2534 q
->count
+= p
->count
;
2541 *pp
= edir
->dyn_relocs
;
2544 edir
->dyn_relocs
= eind
->dyn_relocs
;
2545 eind
->dyn_relocs
= NULL
;
2548 if (ind
->root
.type
== bfd_link_hash_indirect
)
2550 if (dir
->got
.refcount
<= 0)
2552 edir
->tls_type
= eind
->tls_type
;
2553 eind
->tls_type
= TLS_UNKNOWN
;
2557 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2560 /* Set the right machine number. */
2563 or1k_elf_object_p (bfd
*abfd
)
2565 unsigned long mach
= bfd_mach_or1k
;
2567 if (elf_elfheader (abfd
)->e_flags
& EF_OR1K_NODELAY
)
2568 mach
= bfd_mach_or1knd
;
2570 return bfd_default_set_arch_mach (abfd
, bfd_arch_or1k
, mach
);
2573 /* Store the machine number in the flags field. */
2576 or1k_elf_final_write_processing (bfd
*abfd
,
2577 bfd_boolean linker ATTRIBUTE_UNUSED
)
2579 switch (bfd_get_mach (abfd
))
2584 case bfd_mach_or1knd
:
2585 elf_elfheader (abfd
)->e_flags
|= EF_OR1K_NODELAY
;
2591 or1k_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2593 BFD_ASSERT (!elf_flags_init (abfd
)
2594 || elf_elfheader (abfd
)->e_flags
== flags
);
2596 elf_elfheader (abfd
)->e_flags
= flags
;
2597 elf_flags_init (abfd
) = TRUE
;
2601 /* Make sure all input files are consistent with respect to
2602 EF_OR1K_NODELAY flag setting. */
2605 elf32_or1k_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
2607 bfd
*obfd
= info
->output_bfd
;
2611 in_flags
= elf_elfheader (ibfd
)->e_flags
;
2612 out_flags
= elf_elfheader (obfd
)->e_flags
;
2614 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2615 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2618 if (!elf_flags_init (obfd
))
2620 elf_flags_init (obfd
) = TRUE
;
2621 elf_elfheader (obfd
)->e_flags
= in_flags
;
2626 if (in_flags
== out_flags
)
2629 if ((in_flags
& EF_OR1K_NODELAY
) != (out_flags
& EF_OR1K_NODELAY
))
2632 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd
);
2634 bfd_set_error (bfd_error_bad_value
);
2642 #define ELF_ARCH bfd_arch_or1k
2643 #define ELF_MACHINE_CODE EM_OR1K
2644 #define ELF_TARGET_ID OR1K_ELF_DATA
2645 #define ELF_MAXPAGESIZE 0x2000
2647 #define TARGET_BIG_SYM or1k_elf32_vec
2648 #define TARGET_BIG_NAME "elf32-or1k"
2650 #define elf_info_to_howto_rel NULL
2651 #define elf_info_to_howto or1k_info_to_howto_rela
2652 #define elf_backend_relocate_section or1k_elf_relocate_section
2653 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2654 #define elf_backend_check_relocs or1k_elf_check_relocs
2655 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2656 #define elf_backend_can_gc_sections 1
2657 #define elf_backend_rela_normal 1
2659 #define bfd_elf32_mkobject elf_or1k_mkobject
2661 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2662 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2663 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2664 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2666 #define elf_backend_object_p or1k_elf_object_p
2667 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2668 #define elf_backend_can_refcount 1
2670 #define elf_backend_plt_readonly 1
2671 #define elf_backend_want_got_plt 1
2672 #define elf_backend_want_plt_sym 0
2673 #define elf_backend_got_header_size 12
2674 #define elf_backend_dtrel_excludes_plt 1
2675 #define elf_backend_want_dynrelro 1
2677 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2678 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2679 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2680 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2681 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2682 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2683 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2685 #include "elf32-target.h"