1 /* Or1k-specific support for 32-bit ELF.
2 Copyright (C) 2001-2018 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
,
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 (_("%pB: unsupported relocation type %#x"),
719 cache_ptr
->howto
= & or1k_elf_howto_table
[r_type
];
723 /* Return the relocation value for @tpoff relocations.. */
725 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
727 /* If tls_sec is NULL, we should have signalled an error already. */
728 if (elf_hash_table (info
)->tls_sec
== NULL
)
731 /* The thread pointer on or1k stores the address after the TCB where
732 the data is, just compute the difference. No need to compensate
733 for the size of TCB. */
734 return (address
- elf_hash_table (info
)->tls_sec
->vma
);
737 /* Relocate an Or1k ELF section.
739 The RELOCATE_SECTION function is called by the new ELF backend linker
740 to handle the relocations for a section.
742 The relocs are always passed as Rela structures; if the section
743 actually uses Rel structures, the r_addend field will always be
746 This function is responsible for adjusting the section contents as
747 necessary, and (if using Rela relocs and generating a relocatable
748 output file) adjusting the reloc addend as necessary.
750 This function does not have to worry about setting the reloc
751 address or the reloc symbol index.
753 LOCAL_SYMS is a pointer to the swapped in local symbols.
755 LOCAL_SECTIONS is an array giving the section in the input file
756 corresponding to the st_shndx field of each local symbol.
758 The global hash table entry for the global symbols can be found
759 via elf_sym_hashes (input_bfd).
761 When generating relocatable output, this function must handle
762 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
763 going to be the section symbol corresponding to the output
764 section, which means that the addend must be adjusted
768 or1k_elf_relocate_section (bfd
*output_bfd
,
769 struct bfd_link_info
*info
,
771 asection
*input_section
,
773 Elf_Internal_Rela
*relocs
,
774 Elf_Internal_Sym
*local_syms
,
775 asection
**local_sections
)
777 Elf_Internal_Shdr
*symtab_hdr
;
778 struct elf_link_hash_entry
**sym_hashes
;
779 Elf_Internal_Rela
*rel
;
780 Elf_Internal_Rela
*relend
;
781 struct elf_or1k_link_hash_table
*htab
= or1k_elf_hash_table (info
);
784 bfd_vma
*local_got_offsets
;
790 dynobj
= htab
->root
.dynobj
;
791 local_got_offsets
= elf_local_got_offsets (input_bfd
);
793 sreloc
= elf_section_data (input_section
)->sreloc
;
795 sgot
= htab
->root
.sgot
;
797 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
798 sym_hashes
= elf_sym_hashes (input_bfd
);
799 relend
= relocs
+ input_section
->reloc_count
;
801 for (rel
= relocs
; rel
< relend
; rel
++)
803 reloc_howto_type
*howto
;
804 unsigned long r_symndx
;
805 Elf_Internal_Sym
*sym
;
807 struct elf_link_hash_entry
*h
;
809 bfd_reloc_status_type r
;
810 const char *name
= NULL
;
813 r_type
= ELF32_R_TYPE (rel
->r_info
);
814 r_symndx
= ELF32_R_SYM (rel
->r_info
);
816 if (r_type
== R_OR1K_GNU_VTINHERIT
817 || r_type
== R_OR1K_GNU_VTENTRY
)
820 if (r_type
< 0 || r_type
>= (int) R_OR1K_max
)
822 bfd_set_error (bfd_error_bad_value
);
826 howto
= or1k_elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
831 if (r_symndx
< symtab_hdr
->sh_info
)
833 sym
= local_syms
+ r_symndx
;
834 sec
= local_sections
[r_symndx
];
835 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
837 name
= bfd_elf_string_from_elf_section
838 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
839 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
843 bfd_boolean unresolved_reloc
, warned
, ignored
;
845 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
846 r_symndx
, symtab_hdr
, sym_hashes
,
848 unresolved_reloc
, warned
, ignored
);
851 if (sec
!= NULL
&& discarded_section (sec
))
852 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
853 rel
, 1, relend
, howto
, 0, contents
);
855 if (bfd_link_relocatable (info
))
862 if (htab
->root
.splt
!= NULL
&& h
!= NULL
863 && h
->plt
.offset
!= (bfd_vma
) -1)
865 relocation
= (htab
->root
.splt
->output_section
->vma
866 + htab
->root
.splt
->output_offset
873 /* Relocation is to the entry for this symbol in the global
875 BFD_ASSERT (sgot
!= NULL
);
882 BFD_ASSERT (off
!= (bfd_vma
) -1);
884 dyn
= htab
->root
.dynamic_sections_created
;
885 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
888 || (bfd_link_pic (info
)
889 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
891 /* This is actually a static link, or it is a
892 -Bsymbolic link and the symbol is defined
893 locally, or the symbol was forced to be local
894 because of a version file. We must initialize
895 this entry in the global offset table. Since the
896 offset must always be a multiple of 4, we use the
897 least significant bit to record whether we have
898 initialized it already.
900 When doing a dynamic link, we create a .rela.got
901 relocation entry to initialize the value. This
902 is done in the finish_dynamic_symbol routine. */
907 /* Write entry in GOT. */
908 bfd_put_32 (output_bfd
, relocation
,
909 sgot
->contents
+ off
);
910 /* Mark GOT entry as having been written. */
915 relocation
= sgot
->output_offset
+ off
;
922 BFD_ASSERT (local_got_offsets
!= NULL
923 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
925 /* Get offset into GOT table. */
926 off
= local_got_offsets
[r_symndx
];
928 /* The offset must always be a multiple of 4. We use
929 the least significant bit to record whether we have
930 already processed this entry. */
935 /* Write entry in GOT. */
936 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
937 if (bfd_link_pic (info
))
940 Elf_Internal_Rela outrel
;
942 /* We need to generate a R_OR1K_RELATIVE reloc
943 for the dynamic linker. */
944 srelgot
= htab
->root
.srelgot
;
945 BFD_ASSERT (srelgot
!= NULL
);
947 outrel
.r_offset
= (sgot
->output_section
->vma
948 + sgot
->output_offset
950 outrel
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
951 outrel
.r_addend
= relocation
;
952 loc
= srelgot
->contents
;
953 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
954 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
955 ++srelgot
->reloc_count
;
958 local_got_offsets
[r_symndx
] |= 1;
960 relocation
= sgot
->output_offset
+ off
;
963 /* Addend should be zero. */
964 if (rel
->r_addend
!= 0)
966 (_("internal error: addend should be zero for R_OR1K_GOT16"));
970 case R_OR1K_GOTOFF_LO16
:
971 case R_OR1K_GOTOFF_HI16
:
972 /* Relocation is offset from GOT. */
973 BFD_ASSERT (sgot
!= NULL
);
975 -= (htab
->root
.hgot
->root
.u
.def
.value
976 + htab
->root
.hgot
->root
.u
.def
.section
->output_offset
977 + htab
->root
.hgot
->root
.u
.def
.section
->output_section
->vma
);
980 case R_OR1K_INSN_REL_26
:
981 case R_OR1K_HI_16_IN_INSN
:
982 case R_OR1K_LO_16_IN_INSN
:
986 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
987 from removed linkonce sections, or sections discarded by
989 if (r_symndx
== STN_UNDEF
990 || (input_section
->flags
& SEC_ALLOC
) == 0)
993 if ((bfd_link_pic (info
)
995 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
996 || h
->root
.type
!= bfd_link_hash_undefweak
)
997 && (howto
->type
!= R_OR1K_INSN_REL_26
998 || !SYMBOL_CALLS_LOCAL (info
, h
)))
999 || (!bfd_link_pic (info
)
1005 || h
->root
.type
== bfd_link_hash_undefweak
1006 || h
->root
.type
== bfd_link_hash_undefined
)))
1008 Elf_Internal_Rela outrel
;
1012 /* When generating a shared object, these relocations
1013 are copied into the output file to be resolved at run
1016 BFD_ASSERT (sreloc
!= NULL
);
1021 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1023 if (outrel
.r_offset
== (bfd_vma
) -1)
1025 else if (outrel
.r_offset
== (bfd_vma
) -2)
1027 outrel
.r_offset
+= (input_section
->output_section
->vma
1028 + input_section
->output_offset
);
1031 memset (&outrel
, 0, sizeof outrel
);
1032 /* h->dynindx may be -1 if the symbol was marked to
1035 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1036 || !h
->def_regular
))
1038 BFD_ASSERT (h
->dynindx
!= -1);
1039 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1040 outrel
.r_addend
= rel
->r_addend
;
1044 if (r_type
== R_OR1K_32
)
1046 outrel
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
1047 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1053 (_("%pB: probably compiled without -fPIC?"),
1055 bfd_set_error (bfd_error_bad_value
);
1060 loc
= sreloc
->contents
;
1061 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1062 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1068 case R_OR1K_TLS_LDM_HI16
:
1069 case R_OR1K_TLS_LDM_LO16
:
1070 case R_OR1K_TLS_LDO_HI16
:
1071 case R_OR1K_TLS_LDO_LO16
:
1072 /* TODO: implement support for local dynamic. */
1075 (_("%pB: support for local dynamic not implemented"),
1077 bfd_set_error (bfd_error_bad_value
);
1081 case R_OR1K_TLS_GD_HI16
:
1082 case R_OR1K_TLS_GD_LO16
:
1083 case R_OR1K_TLS_IE_HI16
:
1084 case R_OR1K_TLS_IE_LO16
:
1087 Elf_Internal_Rela rela
;
1091 sreloc
= bfd_get_section_by_name (dynobj
, ".rela.got");
1093 /* Mark as TLS related GOT entry by setting
1094 bit 2 as well as bit 1. */
1097 gotoff
= h
->got
.offset
;
1102 gotoff
= local_got_offsets
[r_symndx
];
1103 local_got_offsets
[r_symndx
] |= 3;
1106 /* Only process the relocation once. */
1109 relocation
= sgot
->output_offset
+ (gotoff
& ~3);
1113 BFD_ASSERT (elf_hash_table (info
)->hgot
== NULL
1114 || elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0);
1116 /* Dynamic entries will require relocations. if we do not need
1117 them we will just use the default R_OR1K_NONE and
1118 not set anything. */
1119 dynamic
= bfd_link_pic (info
)
1120 || (sec
&& (sec
->flags
& SEC_ALLOC
) != 0
1122 && (h
->root
.type
== bfd_link_hash_defweak
|| !h
->def_regular
));
1125 if (dynamic
&& (howto
->type
== R_OR1K_TLS_GD_HI16
1126 || howto
->type
== R_OR1K_TLS_GD_LO16
))
1130 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1131 for (i
= 0; i
< 2; ++i
)
1133 rela
.r_offset
= sgot
->output_section
->vma
+
1134 sgot
->output_offset
+ gotoff
+ i
*4;
1135 if (h
!= NULL
&& h
->dynindx
!= -1)
1137 rela
.r_info
= ELF32_R_INFO (h
->dynindx
,
1138 (i
== 0 ? R_OR1K_TLS_DTPMOD
: R_OR1K_TLS_DTPOFF
));
1143 rela
.r_info
= ELF32_R_INFO (0,
1144 (i
== 0 ? R_OR1K_TLS_DTPMOD
: R_OR1K_TLS_DTPOFF
));
1145 rela
.r_addend
= tpoff (info
, relocation
);
1148 loc
= sreloc
->contents
;
1149 loc
+= sreloc
->reloc_count
++ *
1150 sizeof (Elf32_External_Rela
);
1152 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1153 bfd_put_32 (output_bfd
, 0, sgot
->contents
+ gotoff
+ i
*4);
1157 else if (howto
->type
== R_OR1K_TLS_GD_HI16
1158 || howto
->type
== R_OR1K_TLS_GD_LO16
)
1160 bfd_put_32 (output_bfd
, 1, sgot
->contents
+ gotoff
);
1161 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1162 sgot
->contents
+ gotoff
+ 4);
1167 /* Add TPOFF GOT and rela entries. */
1168 rela
.r_offset
= sgot
->output_section
->vma
+
1169 sgot
->output_offset
+ gotoff
;
1170 if (h
!= NULL
&& h
->dynindx
!= -1)
1172 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_TLS_TPOFF
);
1177 rela
.r_info
= ELF32_R_INFO (0, R_OR1K_TLS_TPOFF
);
1178 rela
.r_addend
= tpoff (info
, relocation
);
1181 loc
= sreloc
->contents
;
1182 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1184 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1185 bfd_put_32 (output_bfd
, 0, sgot
->contents
+ gotoff
);
1190 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1191 sgot
->contents
+ gotoff
);
1193 relocation
= sgot
->output_offset
+ gotoff
;
1196 case R_OR1K_TLS_LE_HI16
:
1197 case R_OR1K_TLS_LE_LO16
:
1199 /* Relocation is offset from TP. */
1200 relocation
= tpoff (info
, relocation
);
1203 case R_OR1K_TLS_DTPMOD
:
1204 case R_OR1K_TLS_DTPOFF
:
1205 case R_OR1K_TLS_TPOFF
:
1206 /* These are resolved dynamically on load and shouldn't
1207 be used as linker input. */
1210 (_("%pB: will not resolve runtime TLS relocation"),
1212 bfd_set_error (bfd_error_bad_value
);
1218 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1219 rel
->r_offset
, relocation
, rel
->r_addend
);
1221 if (r
!= bfd_reloc_ok
)
1223 const char *msg
= NULL
;
1227 case bfd_reloc_overflow
:
1228 (*info
->callbacks
->reloc_overflow
)
1229 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1230 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
1233 case bfd_reloc_undefined
:
1234 (*info
->callbacks
->undefined_symbol
)
1235 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
1238 case bfd_reloc_outofrange
:
1239 msg
= _("internal error: out of range error");
1242 case bfd_reloc_notsupported
:
1243 msg
= _("internal error: unsupported relocation error");
1246 case bfd_reloc_dangerous
:
1247 msg
= _("internal error: dangerous relocation");
1251 msg
= _("internal error: unknown error");
1256 (*info
->callbacks
->warning
) (info
, msg
, name
, input_bfd
,
1257 input_section
, rel
->r_offset
);
1264 /* Return the section that should be marked against GC for a given
1268 or1k_elf_gc_mark_hook (asection
*sec
,
1269 struct bfd_link_info
*info
,
1270 Elf_Internal_Rela
*rel
,
1271 struct elf_link_hash_entry
*h
,
1272 Elf_Internal_Sym
*sym
)
1275 switch (ELF32_R_TYPE (rel
->r_info
))
1277 case R_OR1K_GNU_VTINHERIT
:
1278 case R_OR1K_GNU_VTENTRY
:
1282 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1285 /* Look through the relocs for a section during the first phase. */
1288 or1k_elf_check_relocs (bfd
*abfd
,
1289 struct bfd_link_info
*info
,
1291 const Elf_Internal_Rela
*relocs
)
1293 Elf_Internal_Shdr
*symtab_hdr
;
1294 struct elf_link_hash_entry
**sym_hashes
;
1295 const Elf_Internal_Rela
*rel
;
1297 const Elf_Internal_Rela
*rel_end
;
1298 struct elf_or1k_link_hash_table
*htab
;
1300 asection
*sreloc
= NULL
;
1302 if (bfd_link_relocatable (info
))
1305 /* Don't do anything special with non-loaded, non-alloced sections.
1306 In particular, any relocs in such sections should not affect GOT
1307 and PLT reference counting (ie. we don't allow them to create GOT
1308 or PLT entries), there's no possibility or desire to optimize TLS
1309 relocs, and there's not much point in propagating relocs to shared
1310 libs that the dynamic linker won't relocate. */
1311 if ((sec
->flags
& SEC_ALLOC
) == 0)
1314 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1315 sym_hashes
= elf_sym_hashes (abfd
);
1317 htab
= or1k_elf_hash_table (info
);
1321 dynobj
= htab
->root
.dynobj
;
1323 rel_end
= relocs
+ sec
->reloc_count
;
1324 for (rel
= relocs
; rel
< rel_end
; rel
++)
1326 struct elf_link_hash_entry
*h
;
1327 unsigned long r_symndx
;
1328 unsigned char tls_type
;
1330 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1331 if (r_symndx
< symtab_hdr
->sh_info
)
1335 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1336 while (h
->root
.type
== bfd_link_hash_indirect
1337 || h
->root
.type
== bfd_link_hash_warning
)
1338 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1341 switch (ELF32_R_TYPE (rel
->r_info
))
1343 case R_OR1K_TLS_GD_HI16
:
1344 case R_OR1K_TLS_GD_LO16
:
1347 case R_OR1K_TLS_LDM_HI16
:
1348 case R_OR1K_TLS_LDM_LO16
:
1349 case R_OR1K_TLS_LDO_HI16
:
1350 case R_OR1K_TLS_LDO_LO16
:
1353 case R_OR1K_TLS_IE_HI16
:
1354 case R_OR1K_TLS_IE_LO16
:
1357 case R_OR1K_TLS_LE_HI16
:
1358 case R_OR1K_TLS_LE_LO16
:
1362 tls_type
= TLS_NONE
;
1365 /* Record TLS type. */
1367 ((struct elf_or1k_link_hash_entry
*) h
)->tls_type
= tls_type
;
1370 unsigned char *local_tls_type
;
1372 /* This is a TLS type record for a local symbol. */
1373 local_tls_type
= (unsigned char *) elf_or1k_local_tls_type (abfd
);
1374 if (local_tls_type
== NULL
)
1378 size
= symtab_hdr
->sh_info
;
1379 local_tls_type
= bfd_zalloc (abfd
, size
);
1380 if (local_tls_type
== NULL
)
1382 elf_or1k_local_tls_type (abfd
) = local_tls_type
;
1384 local_tls_type
[r_symndx
] = tls_type
;
1387 switch (ELF32_R_TYPE (rel
->r_info
))
1389 /* This relocation describes the C++ object vtable hierarchy.
1390 Reconstruct it for later use during GC. */
1391 case R_OR1K_GNU_VTINHERIT
:
1392 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1396 /* This relocation describes which C++ vtable entries are actually
1397 used. Record for later use during GC. */
1398 case R_OR1K_GNU_VTENTRY
:
1399 BFD_ASSERT (h
!= NULL
);
1401 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1405 /* This relocation requires .plt entry. */
1410 h
->plt
.refcount
+= 1;
1415 case R_OR1K_GOTOFF_HI16
:
1416 case R_OR1K_GOTOFF_LO16
:
1417 case R_OR1K_TLS_GD_HI16
:
1418 case R_OR1K_TLS_GD_LO16
:
1419 case R_OR1K_TLS_IE_HI16
:
1420 case R_OR1K_TLS_IE_LO16
:
1421 if (htab
->root
.sgot
== NULL
)
1424 htab
->root
.dynobj
= dynobj
= abfd
;
1425 if (!_bfd_elf_create_got_section (dynobj
, info
))
1429 if (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_GOTOFF_HI16
&&
1430 ELF32_R_TYPE (rel
->r_info
) != R_OR1K_GOTOFF_LO16
)
1433 h
->got
.refcount
+= 1;
1436 bfd_signed_vma
*local_got_refcounts
;
1438 /* This is a global offset table entry for a local symbol. */
1439 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1440 if (local_got_refcounts
== NULL
)
1444 size
= symtab_hdr
->sh_info
;
1445 size
*= sizeof (bfd_signed_vma
);
1446 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1447 if (local_got_refcounts
== NULL
)
1449 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1451 local_got_refcounts
[r_symndx
] += 1;
1456 case R_OR1K_INSN_REL_26
:
1457 case R_OR1K_HI_16_IN_INSN
:
1458 case R_OR1K_LO_16_IN_INSN
:
1462 if (h
!= NULL
&& !bfd_link_pic (info
))
1464 /* We may need a copy reloc. */
1467 /* We may also need a .plt entry. */
1468 h
->plt
.refcount
+= 1;
1469 if (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_INSN_REL_26
)
1470 h
->pointer_equality_needed
= 1;
1473 /* If we are creating a shared library, and this is a reloc
1474 against a global symbol, or a non PC relative reloc
1475 against a local symbol, then we need to copy the reloc
1476 into the shared library. However, if we are linking with
1477 -Bsymbolic, we do not need to copy a reloc against a
1478 global symbol which is defined in an object we are
1479 including in the link (i.e., DEF_REGULAR is set). At
1480 this point we have not seen all the input files, so it is
1481 possible that DEF_REGULAR is not set now but will be set
1482 later (it is never cleared). In case of a weak definition,
1483 DEF_REGULAR may be cleared later by a strong definition in
1484 a shared library. We account for that possibility below by
1485 storing information in the relocs_copied field of the hash
1486 table entry. A similar situation occurs when creating
1487 shared libraries and symbol visibility changes render the
1490 If on the other hand, we are creating an executable, we
1491 may need to keep relocations for symbols satisfied by a
1492 dynamic library if we manage to avoid copy relocs for the
1495 if ((bfd_link_pic (info
)
1496 && (sec
->flags
& SEC_ALLOC
) != 0
1497 && (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_INSN_REL_26
1499 && (!SYMBOLIC_BIND (info
, h
)
1500 || h
->root
.type
== bfd_link_hash_defweak
1501 || !h
->def_regular
))))
1502 || (!bfd_link_pic (info
)
1503 && (sec
->flags
& SEC_ALLOC
) != 0
1505 && (h
->root
.type
== bfd_link_hash_defweak
1506 || !h
->def_regular
)))
1508 struct elf_dyn_relocs
*p
;
1509 struct elf_dyn_relocs
**head
;
1511 /* When creating a shared object, we must copy these
1512 relocs into the output file. We create a reloc
1513 section in dynobj and make room for the reloc. */
1517 unsigned int strndx
= elf_elfheader (abfd
)->e_shstrndx
;
1518 unsigned int shnam
= _bfd_elf_single_rel_hdr (sec
)->sh_name
;
1520 name
= bfd_elf_string_from_elf_section (abfd
, strndx
, shnam
);
1524 if (strncmp (name
, ".rela", 5) != 0
1525 || strcmp (bfd_get_section_name (abfd
, sec
),
1529 /* xgettext:c-format */
1530 (_("%pB: bad relocation section name `%s\'"),
1534 if (htab
->root
.dynobj
== NULL
)
1535 htab
->root
.dynobj
= abfd
;
1536 dynobj
= htab
->root
.dynobj
;
1538 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1541 sreloc
= _bfd_elf_make_dynamic_reloc_section
1542 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1547 elf_section_data (sec
)->sreloc
= sreloc
;
1550 /* If this is a global symbol, we count the number of
1551 relocations we need for this symbol. */
1553 head
= &((struct elf_or1k_link_hash_entry
*) h
)->dyn_relocs
;
1556 /* Track dynamic relocs needed for local syms too.
1557 We really need local syms available to do this
1561 Elf_Internal_Sym
*isym
;
1564 isym
= bfd_sym_from_r_symndx (&htab
->sym_sec
,
1569 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1573 vpp
= &elf_section_data (s
)->local_dynrel
;
1574 head
= (struct elf_dyn_relocs
**) vpp
;
1578 if (p
== NULL
|| p
->sec
!= sec
)
1580 bfd_size_type amt
= sizeof *p
;
1581 p
= ((struct elf_dyn_relocs
*)
1582 bfd_alloc (htab
->root
.dynobj
, amt
));
1593 if (ELF32_R_TYPE (rel
->r_info
) == R_OR1K_INSN_REL_26
)
1604 /* Finish up the dynamic sections. */
1607 or1k_elf_finish_dynamic_sections (bfd
*output_bfd
,
1608 struct bfd_link_info
*info
)
1611 asection
*sdyn
, *sgot
;
1612 struct elf_or1k_link_hash_table
*htab
;
1614 htab
= or1k_elf_hash_table (info
);
1618 dynobj
= htab
->root
.dynobj
;
1620 sgot
= htab
->root
.sgotplt
;
1621 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1623 if (htab
->root
.dynamic_sections_created
)
1626 Elf32_External_Dyn
*dyncon
, *dynconend
;
1628 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1630 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1631 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1633 for (; dyncon
< dynconend
; dyncon
++)
1635 Elf_Internal_Dyn dyn
;
1638 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1646 s
= htab
->root
.sgotplt
;
1647 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1651 s
= htab
->root
.srelplt
;
1652 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1656 s
= htab
->root
.srelplt
;
1657 dyn
.d_un
.d_val
= s
->size
;
1660 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1664 /* Fill in the first entry in the procedure linkage table. */
1665 splt
= htab
->root
.splt
;
1666 if (splt
&& splt
->size
> 0)
1668 if (bfd_link_pic (info
))
1670 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
,
1672 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
,
1673 splt
->contents
+ 4);
1674 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
,
1675 splt
->contents
+ 8);
1676 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
,
1677 splt
->contents
+ 12);
1678 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
,
1679 splt
->contents
+ 16);
1684 /* addr = .got + 4 */
1685 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1686 bfd_put_32 (output_bfd
,
1687 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1689 bfd_put_32 (output_bfd
,
1690 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1691 splt
->contents
+ 4);
1692 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1693 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1694 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1697 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
1701 /* Set the first entry in the global offset table to the address of
1702 the dynamic section. */
1703 if (sgot
&& sgot
->size
> 0)
1706 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1708 bfd_put_32 (output_bfd
,
1709 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1711 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1714 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
1715 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1720 /* Finish up dynamic symbol handling. We set the contents of various
1721 dynamic sections here. */
1724 or1k_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1725 struct bfd_link_info
*info
,
1726 struct elf_link_hash_entry
*h
,
1727 Elf_Internal_Sym
*sym
)
1729 struct elf_or1k_link_hash_table
*htab
;
1732 htab
= or1k_elf_hash_table (info
);
1736 if (h
->plt
.offset
!= (bfd_vma
) -1)
1745 Elf_Internal_Rela rela
;
1747 /* This symbol has an entry in the procedure linkage table. Set
1749 BFD_ASSERT (h
->dynindx
!= -1);
1751 splt
= htab
->root
.splt
;
1752 sgot
= htab
->root
.sgotplt
;
1753 srela
= htab
->root
.srelplt
;
1754 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1756 /* Get the index in the procedure linkage table which
1757 corresponds to this symbol. This is the index of this symbol
1758 in all the symbols for which we are making plt entries. The
1759 first entry in the procedure linkage table is reserved. */
1760 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1762 /* Get the offset into the .got table of the entry that
1763 corresponds to this function. Each .got entry is 4 bytes.
1764 The first three are reserved. */
1765 got_offset
= (plt_index
+ 3) * 4;
1766 got_addr
= got_offset
;
1768 /* Fill in the entry in the procedure linkage table. */
1769 if (! bfd_link_pic (info
))
1771 got_addr
+= htab
->root
.sgotplt
->output_section
->vma
1772 + htab
->root
.sgotplt
->output_offset
;
1773 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD0
| ((got_addr
>> 16) & 0xffff),
1774 splt
->contents
+ h
->plt
.offset
);
1775 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
| (got_addr
& 0xffff),
1776 splt
->contents
+ h
->plt
.offset
+ 4);
1777 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
1778 splt
->contents
+ h
->plt
.offset
+ 8);
1779 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
1780 splt
->contents
+ h
->plt
.offset
+ 12);
1781 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD4
1782 | plt_index
* sizeof (Elf32_External_Rela
),
1783 splt
->contents
+ h
->plt
.offset
+ 16);
1787 bfd_put_32 (output_bfd
, PLT_PIC_ENTRY_WORD0
| (got_addr
& 0xffff),
1788 splt
->contents
+ h
->plt
.offset
);
1789 bfd_put_32 (output_bfd
, PLT_PIC_ENTRY_WORD1
1790 | plt_index
* sizeof (Elf32_External_Rela
),
1791 splt
->contents
+ h
->plt
.offset
+ 4);
1792 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD2
,
1793 splt
->contents
+ h
->plt
.offset
+ 8);
1794 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD3
,
1795 splt
->contents
+ h
->plt
.offset
+ 12);
1796 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD4
,
1797 splt
->contents
+ h
->plt
.offset
+ 16);
1800 /* Fill in the entry in the global offset table. */
1801 bfd_put_32 (output_bfd
,
1802 (splt
->output_section
->vma
1803 + splt
->output_offset
), /* Same offset. */
1804 sgot
->contents
+ got_offset
);
1806 /* Fill in the entry in the .rela.plt section. */
1807 rela
.r_offset
= (sgot
->output_section
->vma
1808 + sgot
->output_offset
1810 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_JMP_SLOT
);
1812 loc
= srela
->contents
;
1813 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1814 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1816 if (!h
->def_regular
)
1818 /* Mark the symbol as undefined, rather than as defined in
1819 the .plt section. Leave the value alone. */
1820 sym
->st_shndx
= SHN_UNDEF
;
1825 if (h
->got
.offset
!= (bfd_vma
) -1
1826 && (h
->got
.offset
& 2) == 0) /* Homemade TLS check. */
1830 Elf_Internal_Rela rela
;
1832 /* This symbol has an entry in the global offset table. Set it
1834 sgot
= htab
->root
.sgot
;
1835 srela
= htab
->root
.srelgot
;
1836 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1838 rela
.r_offset
= (sgot
->output_section
->vma
1839 + sgot
->output_offset
1840 + (h
->got
.offset
&~ 1));
1842 /* If this is a -Bsymbolic link, and the symbol is defined
1843 locally, we just want to emit a RELATIVE reloc. Likewise if
1844 the symbol was forced to be local because of a version file.
1845 The entry in the global offset table will already have been
1846 initialized in the relocate_section function. */
1847 if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
1849 rela
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
1850 rela
.r_addend
= (h
->root
.u
.def
.value
1851 + h
->root
.u
.def
.section
->output_section
->vma
1852 + h
->root
.u
.def
.section
->output_offset
);
1856 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1857 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1858 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_GLOB_DAT
);
1862 loc
= srela
->contents
;
1863 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1864 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1865 ++srela
->reloc_count
;
1871 Elf_Internal_Rela rela
;
1873 /* This symbols needs a copy reloc. Set it up. */
1874 BFD_ASSERT (h
->dynindx
!= -1
1875 && (h
->root
.type
== bfd_link_hash_defined
1876 || h
->root
.type
== bfd_link_hash_defweak
));
1878 rela
.r_offset
= (h
->root
.u
.def
.value
1879 + h
->root
.u
.def
.section
->output_section
->vma
1880 + h
->root
.u
.def
.section
->output_offset
);
1881 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_COPY
);
1883 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
1884 s
= htab
->root
.sreldynrelro
;
1886 s
= htab
->root
.srelbss
;
1887 loc
= s
->contents
+ s
->reloc_count
* sizeof (Elf32_External_Rela
);
1888 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1892 /* Mark some specially defined symbols as absolute. */
1893 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1894 || h
== htab
->root
.hgot
)
1895 sym
->st_shndx
= SHN_ABS
;
1900 static enum elf_reloc_type_class
1901 or1k_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1902 const asection
*rel_sec ATTRIBUTE_UNUSED
,
1903 const Elf_Internal_Rela
*rela
)
1905 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1907 case R_OR1K_RELATIVE
: return reloc_class_relative
;
1908 case R_OR1K_JMP_SLOT
: return reloc_class_plt
;
1909 case R_OR1K_COPY
: return reloc_class_copy
;
1910 default: return reloc_class_normal
;
1914 /* Find dynamic relocs for H that apply to read-only sections. */
1917 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1919 struct elf_dyn_relocs
*p
;
1920 struct elf_or1k_link_hash_entry
*eh
= (struct elf_or1k_link_hash_entry
*) h
;
1922 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1924 asection
*s
= p
->sec
->output_section
;
1926 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1932 /* Adjust a symbol defined by a dynamic object and referenced by a
1933 regular object. The current definition is in some section of the
1934 dynamic object, but we're not including those sections. We have to
1935 change the definition to something the rest of the link can
1939 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1940 struct elf_link_hash_entry
*h
)
1942 struct elf_or1k_link_hash_table
*htab
;
1946 dynobj
= elf_hash_table (info
)->dynobj
;
1948 /* Make sure we know what is going on here. */
1949 BFD_ASSERT (dynobj
!= NULL
1954 && !h
->def_regular
)));
1956 /* If this is a function, put it in the procedure linkage table. We
1957 will fill in the contents of the procedure linkage table later,
1958 when we know the address of the .got section. */
1959 if (h
->type
== STT_FUNC
1962 if (! bfd_link_pic (info
)
1965 && h
->root
.type
!= bfd_link_hash_undefweak
1966 && h
->root
.type
!= bfd_link_hash_undefined
)
1968 /* This case can occur if we saw a PLT reloc in an input
1969 file, but the symbol was never referred to by a dynamic
1970 object. In such a case, we don't actually need to build
1971 a procedure linkage table, and we can just do a PCREL
1973 h
->plt
.offset
= (bfd_vma
) -1;
1980 h
->plt
.offset
= (bfd_vma
) -1;
1982 /* If this is a weak symbol, and there is a real definition, the
1983 processor independent code will have arranged for us to see the
1984 real definition first, and we can just use the same value. */
1985 if (h
->is_weakalias
)
1987 struct elf_link_hash_entry
*def
= weakdef (h
);
1988 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
1989 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
1990 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
1994 /* This is a reference to a symbol defined by a dynamic object which
1995 is not a function. */
1997 /* If we are creating a shared library, we must presume that the
1998 only references to the symbol are via the global offset table.
1999 For such cases we need not do anything here; the relocations will
2000 be handled correctly by relocate_section. */
2001 if (bfd_link_pic (info
))
2004 /* If there are no references to this symbol that do not use the
2005 GOT, we don't need to generate a copy reloc. */
2006 if (!h
->non_got_ref
)
2009 /* If -z nocopyreloc was given, we won't generate them either. */
2010 if (info
->nocopyreloc
)
2016 /* If we don't find any dynamic relocs in read-only sections, then
2017 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2018 if (!readonly_dynrelocs (h
))
2024 /* We must allocate the symbol in our .dynbss section, which will
2025 become part of the .bss section of the executable. There will be
2026 an entry for this symbol in the .dynsym section. The dynamic
2027 object will contain position independent code, so all references
2028 from the dynamic object to this symbol will go through the global
2029 offset table. The dynamic linker will use the .dynsym entry to
2030 determine the address it must put in the global offset table, so
2031 both the dynamic object and the regular object will refer to the
2032 same memory location for the variable. */
2034 htab
= or1k_elf_hash_table (info
);
2038 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2039 to copy the initial value out of the dynamic object and into the
2040 runtime process image. We need to remember the offset into the
2041 .rela.bss section we are going to use. */
2042 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2044 s
= htab
->root
.sdynrelro
;
2045 srel
= htab
->root
.sreldynrelro
;
2049 s
= htab
->root
.sdynbss
;
2050 srel
= htab
->root
.srelbss
;
2052 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2054 srel
->size
+= sizeof (Elf32_External_Rela
);
2058 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2061 /* Allocate space in .plt, .got and associated reloc sections for
2065 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2067 struct bfd_link_info
*info
;
2068 struct elf_or1k_link_hash_table
*htab
;
2069 struct elf_or1k_link_hash_entry
*eh
;
2070 struct elf_dyn_relocs
*p
;
2072 if (h
->root
.type
== bfd_link_hash_indirect
)
2075 info
= (struct bfd_link_info
*) inf
;
2076 htab
= or1k_elf_hash_table (info
);
2080 eh
= (struct elf_or1k_link_hash_entry
*) h
;
2082 if (htab
->root
.dynamic_sections_created
2083 && h
->plt
.refcount
> 0)
2085 /* Make sure this symbol is output as a dynamic symbol.
2086 Undefined weak syms won't yet be marked as dynamic. */
2087 if (h
->dynindx
== -1
2088 && !h
->forced_local
)
2090 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2094 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
2096 asection
*s
= htab
->root
.splt
;
2098 /* If this is the first .plt entry, make room for the special
2101 s
->size
= PLT_ENTRY_SIZE
;
2103 h
->plt
.offset
= s
->size
;
2105 /* If this symbol is not defined in a regular file, and we are
2106 not generating a shared library, then set the symbol to this
2107 location in the .plt. This is required to make function
2108 pointers compare as equal between the normal executable and
2109 the shared library. */
2110 if (! bfd_link_pic (info
)
2113 h
->root
.u
.def
.section
= s
;
2114 h
->root
.u
.def
.value
= h
->plt
.offset
;
2117 /* Make room for this entry. */
2118 s
->size
+= PLT_ENTRY_SIZE
;
2120 /* We also need to make an entry in the .got.plt section, which
2121 will be placed in the .got section by the linker script. */
2122 htab
->root
.sgotplt
->size
+= 4;
2124 /* We also need to make an entry in the .rel.plt section. */
2125 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2129 h
->plt
.offset
= (bfd_vma
) -1;
2135 h
->plt
.offset
= (bfd_vma
) -1;
2139 if (h
->got
.refcount
> 0)
2143 unsigned char tls_type
;
2145 /* Make sure this symbol is output as a dynamic symbol.
2146 Undefined weak syms won't yet be marked as dynamic. */
2147 if (h
->dynindx
== -1
2148 && !h
->forced_local
)
2150 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2154 s
= htab
->root
.sgot
;
2156 h
->got
.offset
= s
->size
;
2158 tls_type
= ((struct elf_or1k_link_hash_entry
*) h
)->tls_type
;
2160 /* TLS GD requires two GOT and two relocs. */
2161 if (tls_type
== TLS_GD
)
2165 dyn
= htab
->root
.dynamic_sections_created
;
2166 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
2168 if (tls_type
== TLS_GD
)
2169 htab
->root
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
2171 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2175 h
->got
.offset
= (bfd_vma
) -1;
2177 if (eh
->dyn_relocs
== NULL
)
2180 /* In the shared -Bsymbolic case, discard space allocated for
2181 dynamic pc-relative relocs against symbols which turn out to be
2182 defined in regular objects. For the normal shared case, discard
2183 space for pc-relative relocs that have become local due to symbol
2184 visibility changes. */
2186 if (bfd_link_pic (info
))
2188 if (SYMBOL_CALLS_LOCAL (info
, h
))
2190 struct elf_dyn_relocs
**pp
;
2192 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2194 p
->count
-= p
->pc_count
;
2203 /* Also discard relocs on undefined weak syms with non-default
2205 if (eh
->dyn_relocs
!= NULL
2206 && h
->root
.type
== bfd_link_hash_undefweak
)
2208 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2209 eh
->dyn_relocs
= NULL
;
2211 /* Make sure undefined weak symbols are output as a dynamic
2213 else if (h
->dynindx
== -1
2214 && !h
->forced_local
)
2216 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2223 /* For the non-shared case, discard space for relocs against
2224 symbols which turn out to need copy relocs or are not
2230 || (htab
->root
.dynamic_sections_created
2231 && (h
->root
.type
== bfd_link_hash_undefweak
2232 || h
->root
.type
== bfd_link_hash_undefined
))))
2234 /* Make sure this symbol is output as a dynamic symbol.
2235 Undefined weak syms won't yet be marked as dynamic. */
2236 if (h
->dynindx
== -1
2237 && !h
->forced_local
)
2239 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2243 /* If that succeeded, we know we'll be keeping all the
2245 if (h
->dynindx
!= -1)
2249 eh
->dyn_relocs
= NULL
;
2254 /* Finally, allocate space. */
2255 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2257 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2258 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2264 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2265 read-only sections. */
2268 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2272 if (h
->root
.type
== bfd_link_hash_indirect
)
2275 sec
= readonly_dynrelocs (h
);
2278 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2280 info
->flags
|= DF_TEXTREL
;
2281 info
->callbacks
->minfo
2282 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
2283 sec
->owner
, h
->root
.root
.string
, sec
);
2285 /* Not an error, just cut short the traversal. */
2291 /* Set the sizes of the dynamic sections. */
2294 or1k_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2295 struct bfd_link_info
*info
)
2297 struct elf_or1k_link_hash_table
*htab
;
2303 htab
= or1k_elf_hash_table (info
);
2307 dynobj
= htab
->root
.dynobj
;
2308 BFD_ASSERT (dynobj
!= NULL
);
2310 if (htab
->root
.dynamic_sections_created
)
2312 /* Set the contents of the .interp section to the interpreter. */
2313 if (bfd_link_executable (info
) && !info
->nointerp
)
2315 s
= bfd_get_section_by_name (dynobj
, ".interp");
2316 BFD_ASSERT (s
!= NULL
);
2317 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2318 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2322 /* Set up .got offsets for local syms, and space for local dynamic
2324 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2326 bfd_signed_vma
*local_got
;
2327 bfd_signed_vma
*end_local_got
;
2328 bfd_size_type locsymcount
;
2329 Elf_Internal_Shdr
*symtab_hdr
;
2330 unsigned char *local_tls_type
;
2333 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2336 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2338 struct elf_dyn_relocs
*p
;
2340 for (p
= ((struct elf_dyn_relocs
*)
2341 elf_section_data (s
)->local_dynrel
);
2345 if (! bfd_is_abs_section (p
->sec
)
2346 && bfd_is_abs_section (p
->sec
->output_section
))
2348 /* Input section has been discarded, either because
2349 it is a copy of a linkonce section or due to
2350 linker script /DISCARD/, so we'll be discarding
2353 else if (p
->count
!= 0)
2355 srel
= elf_section_data (p
->sec
)->sreloc
;
2356 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2357 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2358 info
->flags
|= DF_TEXTREL
;
2363 local_got
= elf_local_got_refcounts (ibfd
);
2367 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2368 locsymcount
= symtab_hdr
->sh_info
;
2369 end_local_got
= local_got
+ locsymcount
;
2370 s
= htab
->root
.sgot
;
2371 srel
= htab
->root
.srelgot
;
2372 local_tls_type
= (unsigned char *) elf_or1k_local_tls_type (ibfd
);
2373 for (; local_got
< end_local_got
; ++local_got
)
2377 *local_got
= s
->size
;
2379 /* TLS GD requires two GOT and two relocs. */
2380 if (local_tls_type
!= NULL
&& *local_tls_type
== TLS_GD
)
2384 if (bfd_link_pic (info
))
2386 if (local_tls_type
!= NULL
&& *local_tls_type
== TLS_GD
)
2387 srel
->size
+= 2 * sizeof (Elf32_External_Rela
);
2389 srel
->size
+= sizeof (Elf32_External_Rela
);
2394 *local_got
= (bfd_vma
) -1;
2401 /* Allocate global sym .plt and .got entries, and space for global
2402 sym dynamic relocs. */
2403 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2405 /* We now have determined the sizes of the various dynamic sections.
2406 Allocate memory for them. */
2408 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2410 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2413 if (s
== htab
->root
.splt
2414 || s
== htab
->root
.sgot
2415 || s
== htab
->root
.sgotplt
2416 || s
== htab
->root
.sdynbss
2417 || s
== htab
->root
.sdynrelro
)
2419 /* Strip this section if we don't need it; see the
2422 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2424 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2427 /* We use the reloc_count field as a counter if we need
2428 to copy relocs into the output file. */
2432 /* It's not one of our sections, so don't allocate space. */
2437 /* If we don't need this section, strip it from the
2438 output file. This is mostly to handle .rela.bss and
2439 .rela.plt. We must create both sections in
2440 create_dynamic_sections, because they must be created
2441 before the linker maps input sections to output
2442 sections. The linker does that before
2443 adjust_dynamic_symbol is called, and it is that
2444 function which decides whether anything needs to go
2445 into these sections. */
2446 s
->flags
|= SEC_EXCLUDE
;
2450 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2453 /* Allocate memory for the section contents. We use bfd_zalloc
2454 here in case unused entries are not reclaimed before the
2455 section's contents are written out. This should not happen,
2456 but this way if it does, we get a R_OR1K_NONE reloc instead
2458 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2460 if (s
->contents
== NULL
)
2464 if (htab
->root
.dynamic_sections_created
)
2466 /* Add some entries to the .dynamic section. We fill in the
2467 values later, in or1k_elf_finish_dynamic_sections, but we
2468 must add the entries now so that we get the correct size for
2469 the .dynamic section. The DT_DEBUG entry is filled in by the
2470 dynamic linker and used by the debugger. */
2471 #define add_dynamic_entry(TAG, VAL) \
2472 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2474 if (bfd_link_executable (info
))
2476 if (! add_dynamic_entry (DT_DEBUG
, 0))
2480 if (htab
->root
.splt
->size
!= 0)
2482 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2483 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2484 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2485 || ! add_dynamic_entry (DT_JMPREL
, 0))
2491 if (! add_dynamic_entry (DT_RELA
, 0)
2492 || ! add_dynamic_entry (DT_RELASZ
, 0)
2493 || ! add_dynamic_entry (DT_RELAENT
,
2494 sizeof (Elf32_External_Rela
)))
2497 /* If any dynamic relocs apply to a read-only section,
2498 then we need a DT_TEXTREL entry. */
2499 if ((info
->flags
& DF_TEXTREL
) == 0)
2500 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2502 if ((info
->flags
& DF_TEXTREL
) != 0)
2504 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2510 #undef add_dynamic_entry
2514 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2517 or1k_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2518 struct elf_link_hash_entry
*dir
,
2519 struct elf_link_hash_entry
*ind
)
2521 struct elf_or1k_link_hash_entry
* edir
;
2522 struct elf_or1k_link_hash_entry
* eind
;
2524 edir
= (struct elf_or1k_link_hash_entry
*) dir
;
2525 eind
= (struct elf_or1k_link_hash_entry
*) ind
;
2527 if (eind
->dyn_relocs
!= NULL
)
2529 if (edir
->dyn_relocs
!= NULL
)
2531 struct elf_dyn_relocs
**pp
;
2532 struct elf_dyn_relocs
*p
;
2534 /* Add reloc counts against the indirect sym to the direct sym
2535 list. Merge any entries against the same section. */
2536 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2538 struct elf_dyn_relocs
*q
;
2540 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2541 if (q
->sec
== p
->sec
)
2543 q
->pc_count
+= p
->pc_count
;
2544 q
->count
+= p
->count
;
2551 *pp
= edir
->dyn_relocs
;
2554 edir
->dyn_relocs
= eind
->dyn_relocs
;
2555 eind
->dyn_relocs
= NULL
;
2558 if (ind
->root
.type
== bfd_link_hash_indirect
)
2560 if (dir
->got
.refcount
<= 0)
2562 edir
->tls_type
= eind
->tls_type
;
2563 eind
->tls_type
= TLS_UNKNOWN
;
2567 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2570 /* Set the right machine number. */
2573 or1k_elf_object_p (bfd
*abfd
)
2575 unsigned long mach
= bfd_mach_or1k
;
2577 if (elf_elfheader (abfd
)->e_flags
& EF_OR1K_NODELAY
)
2578 mach
= bfd_mach_or1knd
;
2580 return bfd_default_set_arch_mach (abfd
, bfd_arch_or1k
, mach
);
2583 /* Store the machine number in the flags field. */
2586 or1k_elf_final_write_processing (bfd
*abfd
,
2587 bfd_boolean linker ATTRIBUTE_UNUSED
)
2589 switch (bfd_get_mach (abfd
))
2594 case bfd_mach_or1knd
:
2595 elf_elfheader (abfd
)->e_flags
|= EF_OR1K_NODELAY
;
2601 or1k_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2603 BFD_ASSERT (!elf_flags_init (abfd
)
2604 || elf_elfheader (abfd
)->e_flags
== flags
);
2606 elf_elfheader (abfd
)->e_flags
= flags
;
2607 elf_flags_init (abfd
) = TRUE
;
2611 /* Make sure all input files are consistent with respect to
2612 EF_OR1K_NODELAY flag setting. */
2615 elf32_or1k_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
2617 bfd
*obfd
= info
->output_bfd
;
2621 in_flags
= elf_elfheader (ibfd
)->e_flags
;
2622 out_flags
= elf_elfheader (obfd
)->e_flags
;
2624 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2625 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2628 if (!elf_flags_init (obfd
))
2630 elf_flags_init (obfd
) = TRUE
;
2631 elf_elfheader (obfd
)->e_flags
= in_flags
;
2636 if (in_flags
== out_flags
)
2639 if ((in_flags
& EF_OR1K_NODELAY
) != (out_flags
& EF_OR1K_NODELAY
))
2642 (_("%pB: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd
);
2644 bfd_set_error (bfd_error_bad_value
);
2652 #define ELF_ARCH bfd_arch_or1k
2653 #define ELF_MACHINE_CODE EM_OR1K
2654 #define ELF_TARGET_ID OR1K_ELF_DATA
2655 #define ELF_MAXPAGESIZE 0x2000
2657 #define TARGET_BIG_SYM or1k_elf32_vec
2658 #define TARGET_BIG_NAME "elf32-or1k"
2660 #define elf_info_to_howto_rel NULL
2661 #define elf_info_to_howto or1k_info_to_howto_rela
2662 #define elf_backend_relocate_section or1k_elf_relocate_section
2663 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2664 #define elf_backend_check_relocs or1k_elf_check_relocs
2665 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2666 #define elf_backend_can_gc_sections 1
2667 #define elf_backend_rela_normal 1
2669 #define bfd_elf32_mkobject elf_or1k_mkobject
2671 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2672 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2673 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2674 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2676 #define elf_backend_object_p or1k_elf_object_p
2677 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2678 #define elf_backend_can_refcount 1
2680 #define elf_backend_plt_readonly 1
2681 #define elf_backend_want_got_plt 1
2682 #define elf_backend_want_plt_sym 0
2683 #define elf_backend_got_header_size 12
2684 #define elf_backend_dtrel_excludes_plt 1
2685 #define elf_backend_want_dynrelro 1
2687 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2688 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2689 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2690 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2691 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2692 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2693 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2695 #include "elf32-target.h"