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 /* The linker needs to keep track of the number of relocs that it
560 decides to copy as dynamic relocs in check_relocs for each symbol.
561 This is so that it can later discard them if they are found to be
562 unnecessary. We store the information in a field extending the
563 regular ELF linker hash table. */
565 struct elf_or1k_dyn_relocs
567 struct elf_or1k_dyn_relocs
*next
;
569 /* The input section of the reloc. */
572 /* Total number of relocs copied for the input section. */
575 /* Number of pc-relative relocs copied for the input section. */
576 bfd_size_type pc_count
;
579 #define TLS_UNKNOWN 0
586 /* ELF linker hash entry. */
587 struct elf_or1k_link_hash_entry
589 struct elf_link_hash_entry root
;
591 /* Track dynamic relocs copied for this symbol. */
592 struct elf_or1k_dyn_relocs
*dyn_relocs
;
594 /* Track type of TLS access. */
595 unsigned char tls_type
;
598 /* ELF object data. */
599 struct elf_or1k_obj_tdata
601 struct elf_obj_tdata root
;
603 /* tls_type for each local got entry. */
604 unsigned char *local_tls_type
;
607 #define elf_or1k_tdata(abfd) \
608 ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any)
610 #define elf_or1k_local_tls_type(abfd) \
611 (elf_or1k_tdata (abfd)->local_tls_type)
613 /* ELF linker hash table. */
614 struct elf_or1k_link_hash_table
616 struct elf_link_hash_table root
;
618 /* Small local sym to section mapping cache. */
619 struct sym_cache sym_sec
;
622 /* Get the ELF linker hash table from a link_info structure. */
623 #define or1k_elf_hash_table(p) \
624 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
625 == OR1K_ELF_DATA ? ((struct elf_or1k_link_hash_table *) ((p)->hash)) : NULL)
628 elf_or1k_mkobject (bfd
*abfd
)
630 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_or1k_obj_tdata
),
634 /* Create an entry in an or1k ELF linker hash table. */
636 static struct bfd_hash_entry
*
637 or1k_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
638 struct bfd_hash_table
*table
,
641 struct elf_or1k_link_hash_entry
*ret
=
642 (struct elf_or1k_link_hash_entry
*) entry
;
644 /* Allocate the structure if it has not already been allocated by a
647 ret
= bfd_hash_allocate (table
,
648 sizeof (struct elf_or1k_link_hash_entry
));
652 /* Call the allocation method of the superclass. */
653 ret
= ((struct elf_or1k_link_hash_entry
*)
654 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
658 struct elf_or1k_link_hash_entry
*eh
;
660 eh
= (struct elf_or1k_link_hash_entry
*) ret
;
661 eh
->dyn_relocs
= NULL
;
662 eh
->tls_type
= TLS_UNKNOWN
;
665 return (struct bfd_hash_entry
*) ret
;
668 /* Create an or1k ELF linker hash table. */
670 static struct bfd_link_hash_table
*
671 or1k_elf_link_hash_table_create (bfd
*abfd
)
673 struct elf_or1k_link_hash_table
*ret
;
674 bfd_size_type amt
= sizeof (struct elf_or1k_link_hash_table
);
676 ret
= bfd_zmalloc (amt
);
680 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
681 or1k_elf_link_hash_newfunc
,
682 sizeof (struct elf_or1k_link_hash_entry
),
689 return &ret
->root
.root
;
692 static reloc_howto_type
*
693 or1k_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
694 bfd_reloc_code_real_type code
)
698 for (i
= ARRAY_SIZE (or1k_reloc_map
); i
--;)
699 if (or1k_reloc_map
[i
].bfd_reloc_val
== code
)
700 return & or1k_elf_howto_table
[or1k_reloc_map
[i
].or1k_reloc_val
];
705 static reloc_howto_type
*
706 or1k_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
712 i
< (sizeof (or1k_elf_howto_table
)
713 / sizeof (or1k_elf_howto_table
[0]));
715 if (or1k_elf_howto_table
[i
].name
!= NULL
716 && strcasecmp (or1k_elf_howto_table
[i
].name
, r_name
) == 0)
717 return &or1k_elf_howto_table
[i
];
722 /* Set the howto pointer for an Or1k ELF reloc. */
725 or1k_info_to_howto_rela (bfd
* abfd ATTRIBUTE_UNUSED
,
727 Elf_Internal_Rela
* dst
)
731 r_type
= ELF32_R_TYPE (dst
->r_info
);
732 if (r_type
>= (unsigned int) R_OR1K_max
)
734 /* xgettext:c-format */
735 _bfd_error_handler (_("%B: invalid OR1K reloc number: %d"), abfd
, r_type
);
738 cache_ptr
->howto
= & or1k_elf_howto_table
[r_type
];
742 /* Return the relocation value for @tpoff relocations.. */
744 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
746 /* If tls_sec is NULL, we should have signalled an error already. */
747 if (elf_hash_table (info
)->tls_sec
== NULL
)
750 /* The thread pointer on or1k stores the address after the TCB where
751 the data is, just compute the difference. No need to compensate
752 for the size of TCB. */
753 return (address
- elf_hash_table (info
)->tls_sec
->vma
);
756 /* Relocate an Or1k ELF section.
758 The RELOCATE_SECTION function is called by the new ELF backend linker
759 to handle the relocations for a section.
761 The relocs are always passed as Rela structures; if the section
762 actually uses Rel structures, the r_addend field will always be
765 This function is responsible for adjusting the section contents as
766 necessary, and (if using Rela relocs and generating a relocatable
767 output file) adjusting the reloc addend as necessary.
769 This function does not have to worry about setting the reloc
770 address or the reloc symbol index.
772 LOCAL_SYMS is a pointer to the swapped in local symbols.
774 LOCAL_SECTIONS is an array giving the section in the input file
775 corresponding to the st_shndx field of each local symbol.
777 The global hash table entry for the global symbols can be found
778 via elf_sym_hashes (input_bfd).
780 When generating relocatable output, this function must handle
781 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
782 going to be the section symbol corresponding to the output
783 section, which means that the addend must be adjusted
787 or1k_elf_relocate_section (bfd
*output_bfd
,
788 struct bfd_link_info
*info
,
790 asection
*input_section
,
792 Elf_Internal_Rela
*relocs
,
793 Elf_Internal_Sym
*local_syms
,
794 asection
**local_sections
)
796 Elf_Internal_Shdr
*symtab_hdr
;
797 struct elf_link_hash_entry
**sym_hashes
;
798 Elf_Internal_Rela
*rel
;
799 Elf_Internal_Rela
*relend
;
800 struct elf_or1k_link_hash_table
*htab
= or1k_elf_hash_table (info
);
803 bfd_vma
*local_got_offsets
;
809 dynobj
= htab
->root
.dynobj
;
810 local_got_offsets
= elf_local_got_offsets (input_bfd
);
812 sreloc
= elf_section_data (input_section
)->sreloc
;
814 sgot
= htab
->root
.sgot
;
816 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
817 sym_hashes
= elf_sym_hashes (input_bfd
);
818 relend
= relocs
+ input_section
->reloc_count
;
820 for (rel
= relocs
; rel
< relend
; rel
++)
822 reloc_howto_type
*howto
;
823 unsigned long r_symndx
;
824 Elf_Internal_Sym
*sym
;
826 struct elf_link_hash_entry
*h
;
828 bfd_reloc_status_type r
;
829 const char *name
= NULL
;
832 r_type
= ELF32_R_TYPE (rel
->r_info
);
833 r_symndx
= ELF32_R_SYM (rel
->r_info
);
835 if (r_type
== R_OR1K_GNU_VTINHERIT
836 || r_type
== R_OR1K_GNU_VTENTRY
)
839 if (r_type
< 0 || r_type
>= (int) R_OR1K_max
)
841 bfd_set_error (bfd_error_bad_value
);
845 howto
= or1k_elf_howto_table
+ ELF32_R_TYPE (rel
->r_info
);
850 if (r_symndx
< symtab_hdr
->sh_info
)
852 sym
= local_syms
+ r_symndx
;
853 sec
= local_sections
[r_symndx
];
854 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
856 name
= bfd_elf_string_from_elf_section
857 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
858 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
862 bfd_boolean unresolved_reloc
, warned
, ignored
;
864 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
865 r_symndx
, symtab_hdr
, sym_hashes
,
867 unresolved_reloc
, warned
, ignored
);
870 if (sec
!= NULL
&& discarded_section (sec
))
871 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
872 rel
, 1, relend
, howto
, 0, contents
);
874 if (bfd_link_relocatable (info
))
881 if (htab
->root
.splt
!= NULL
&& h
!= NULL
882 && h
->plt
.offset
!= (bfd_vma
) -1)
884 relocation
= (htab
->root
.splt
->output_section
->vma
885 + htab
->root
.splt
->output_offset
892 /* Relocation is to the entry for this symbol in the global
894 BFD_ASSERT (sgot
!= NULL
);
901 BFD_ASSERT (off
!= (bfd_vma
) -1);
903 dyn
= htab
->root
.dynamic_sections_created
;
904 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
907 || (bfd_link_pic (info
)
908 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
910 /* This is actually a static link, or it is a
911 -Bsymbolic link and the symbol is defined
912 locally, or the symbol was forced to be local
913 because of a version file. We must initialize
914 this entry in the global offset table. Since the
915 offset must always be a multiple of 4, we use the
916 least significant bit to record whether we have
917 initialized it already.
919 When doing a dynamic link, we create a .rela.got
920 relocation entry to initialize the value. This
921 is done in the finish_dynamic_symbol routine. */
926 /* Write entry in GOT. */
927 bfd_put_32 (output_bfd
, relocation
,
928 sgot
->contents
+ off
);
929 /* Mark GOT entry as having been written. */
934 relocation
= sgot
->output_offset
+ off
;
941 BFD_ASSERT (local_got_offsets
!= NULL
942 && local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
944 /* Get offset into GOT table. */
945 off
= local_got_offsets
[r_symndx
];
947 /* The offset must always be a multiple of 4. We use
948 the least significant bit to record whether we have
949 already processed this entry. */
954 /* Write entry in GOT. */
955 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
956 if (bfd_link_pic (info
))
959 Elf_Internal_Rela outrel
;
961 /* We need to generate a R_OR1K_RELATIVE reloc
962 for the dynamic linker. */
963 srelgot
= htab
->root
.srelgot
;
964 BFD_ASSERT (srelgot
!= NULL
);
966 outrel
.r_offset
= (sgot
->output_section
->vma
967 + sgot
->output_offset
969 outrel
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
970 outrel
.r_addend
= relocation
;
971 loc
= srelgot
->contents
;
972 loc
+= srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
973 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,loc
);
974 ++srelgot
->reloc_count
;
977 local_got_offsets
[r_symndx
] |= 1;
979 relocation
= sgot
->output_offset
+ off
;
982 /* Addend should be zero. */
983 if (rel
->r_addend
!= 0)
985 (_("internal error: addend should be zero for R_OR1K_GOT16"));
989 case R_OR1K_GOTOFF_LO16
:
990 case R_OR1K_GOTOFF_HI16
:
991 /* Relocation is offset from GOT. */
992 BFD_ASSERT (sgot
!= NULL
);
994 -= (htab
->root
.hgot
->root
.u
.def
.value
995 + htab
->root
.hgot
->root
.u
.def
.section
->output_offset
996 + htab
->root
.hgot
->root
.u
.def
.section
->output_section
->vma
);
999 case R_OR1K_INSN_REL_26
:
1000 case R_OR1K_HI_16_IN_INSN
:
1001 case R_OR1K_LO_16_IN_INSN
:
1005 /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
1006 from removed linkonce sections, or sections discarded by
1008 if (r_symndx
== STN_UNDEF
1009 || (input_section
->flags
& SEC_ALLOC
) == 0)
1012 if ((bfd_link_pic (info
)
1014 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
1015 || h
->root
.type
!= bfd_link_hash_undefweak
)
1016 && (howto
->type
!= R_OR1K_INSN_REL_26
1017 || !SYMBOL_CALLS_LOCAL (info
, h
)))
1018 || (!bfd_link_pic (info
)
1024 || h
->root
.type
== bfd_link_hash_undefweak
1025 || h
->root
.type
== bfd_link_hash_undefined
)))
1027 Elf_Internal_Rela outrel
;
1031 /* When generating a shared object, these relocations
1032 are copied into the output file to be resolved at run
1035 BFD_ASSERT (sreloc
!= NULL
);
1040 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1042 if (outrel
.r_offset
== (bfd_vma
) -1)
1044 else if (outrel
.r_offset
== (bfd_vma
) -2)
1046 outrel
.r_offset
+= (input_section
->output_section
->vma
1047 + input_section
->output_offset
);
1050 memset (&outrel
, 0, sizeof outrel
);
1051 /* h->dynindx may be -1 if the symbol was marked to
1054 && ((! info
->symbolic
&& h
->dynindx
!= -1)
1055 || !h
->def_regular
))
1057 BFD_ASSERT (h
->dynindx
!= -1);
1058 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
1059 outrel
.r_addend
= rel
->r_addend
;
1063 if (r_type
== R_OR1K_32
)
1065 outrel
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
1066 outrel
.r_addend
= relocation
+ rel
->r_addend
;
1072 (_("%B: probably compiled without -fPIC?"),
1074 bfd_set_error (bfd_error_bad_value
);
1079 loc
= sreloc
->contents
;
1080 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1081 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1087 case R_OR1K_TLS_LDM_HI16
:
1088 case R_OR1K_TLS_LDM_LO16
:
1089 case R_OR1K_TLS_LDO_HI16
:
1090 case R_OR1K_TLS_LDO_LO16
:
1091 /* TODO: implement support for local dynamic. */
1094 (_("%B: support for local dynamic not implemented"),
1096 bfd_set_error (bfd_error_bad_value
);
1100 case R_OR1K_TLS_GD_HI16
:
1101 case R_OR1K_TLS_GD_LO16
:
1102 case R_OR1K_TLS_IE_HI16
:
1103 case R_OR1K_TLS_IE_LO16
:
1106 Elf_Internal_Rela rela
;
1110 sreloc
= bfd_get_section_by_name (dynobj
, ".rela.got");
1112 /* Mark as TLS related GOT entry by setting
1113 bit 2 as well as bit 1. */
1116 gotoff
= h
->got
.offset
;
1121 gotoff
= local_got_offsets
[r_symndx
];
1122 local_got_offsets
[r_symndx
] |= 3;
1125 /* Only process the relocation once. */
1128 relocation
= sgot
->output_offset
+ (gotoff
& ~3);
1132 BFD_ASSERT (elf_hash_table (info
)->hgot
== NULL
1133 || elf_hash_table (info
)->hgot
->root
.u
.def
.value
== 0);
1135 /* Dynamic entries will require relocations. if we do not need
1136 them we will just use the default R_OR1K_NONE and
1137 not set anything. */
1138 dynamic
= bfd_link_pic (info
)
1139 || (sec
&& (sec
->flags
& SEC_ALLOC
) != 0
1141 && (h
->root
.type
== bfd_link_hash_defweak
|| !h
->def_regular
));
1144 if (dynamic
&& (howto
->type
== R_OR1K_TLS_GD_HI16
1145 || howto
->type
== R_OR1K_TLS_GD_LO16
))
1149 /* Add DTPMOD and DTPOFF GOT and rela entries. */
1150 for (i
= 0; i
< 2; ++i
)
1152 rela
.r_offset
= sgot
->output_section
->vma
+
1153 sgot
->output_offset
+ gotoff
+ i
*4;
1154 if (h
!= NULL
&& h
->dynindx
!= -1)
1156 rela
.r_info
= ELF32_R_INFO (h
->dynindx
,
1157 (i
== 0 ? R_OR1K_TLS_DTPMOD
: R_OR1K_TLS_DTPOFF
));
1162 rela
.r_info
= ELF32_R_INFO (0,
1163 (i
== 0 ? R_OR1K_TLS_DTPMOD
: R_OR1K_TLS_DTPOFF
));
1164 rela
.r_addend
= tpoff (info
, relocation
);
1167 loc
= sreloc
->contents
;
1168 loc
+= sreloc
->reloc_count
++ *
1169 sizeof (Elf32_External_Rela
);
1171 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1172 bfd_put_32 (output_bfd
, 0, sgot
->contents
+ gotoff
+ i
*4);
1176 else if (howto
->type
== R_OR1K_TLS_GD_HI16
1177 || howto
->type
== R_OR1K_TLS_GD_LO16
)
1179 bfd_put_32 (output_bfd
, 1, sgot
->contents
+ gotoff
);
1180 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1181 sgot
->contents
+ gotoff
+ 4);
1186 /* Add TPOFF GOT and rela entries. */
1187 rela
.r_offset
= sgot
->output_section
->vma
+
1188 sgot
->output_offset
+ gotoff
;
1189 if (h
!= NULL
&& h
->dynindx
!= -1)
1191 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_TLS_TPOFF
);
1196 rela
.r_info
= ELF32_R_INFO (0, R_OR1K_TLS_TPOFF
);
1197 rela
.r_addend
= tpoff (info
, relocation
);
1200 loc
= sreloc
->contents
;
1201 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1203 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1204 bfd_put_32 (output_bfd
, 0, sgot
->contents
+ gotoff
);
1209 bfd_put_32 (output_bfd
, tpoff (info
, relocation
),
1210 sgot
->contents
+ gotoff
);
1212 relocation
= sgot
->output_offset
+ gotoff
;
1215 case R_OR1K_TLS_LE_HI16
:
1216 case R_OR1K_TLS_LE_LO16
:
1218 /* Relocation is offset from TP. */
1219 relocation
= tpoff (info
, relocation
);
1222 case R_OR1K_TLS_DTPMOD
:
1223 case R_OR1K_TLS_DTPOFF
:
1224 case R_OR1K_TLS_TPOFF
:
1225 /* These are resolved dynamically on load and shouldn't
1226 be used as linker input. */
1229 (_("%B: will not resolve runtime TLS relocation"),
1231 bfd_set_error (bfd_error_bad_value
);
1237 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1238 rel
->r_offset
, relocation
, rel
->r_addend
);
1240 if (r
!= bfd_reloc_ok
)
1242 const char *msg
= NULL
;
1246 case bfd_reloc_overflow
:
1247 (*info
->callbacks
->reloc_overflow
)
1248 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1249 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
1252 case bfd_reloc_undefined
:
1253 (*info
->callbacks
->undefined_symbol
)
1254 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
1257 case bfd_reloc_outofrange
:
1258 msg
= _("internal error: out of range error");
1261 case bfd_reloc_notsupported
:
1262 msg
= _("internal error: unsupported relocation error");
1265 case bfd_reloc_dangerous
:
1266 msg
= _("internal error: dangerous relocation");
1270 msg
= _("internal error: unknown error");
1275 (*info
->callbacks
->warning
) (info
, msg
, name
, input_bfd
,
1276 input_section
, rel
->r_offset
);
1283 /* Return the section that should be marked against GC for a given
1287 or1k_elf_gc_mark_hook (asection
*sec
,
1288 struct bfd_link_info
*info
,
1289 Elf_Internal_Rela
*rel
,
1290 struct elf_link_hash_entry
*h
,
1291 Elf_Internal_Sym
*sym
)
1294 switch (ELF32_R_TYPE (rel
->r_info
))
1296 case R_OR1K_GNU_VTINHERIT
:
1297 case R_OR1K_GNU_VTENTRY
:
1301 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1304 /* Look through the relocs for a section during the first phase. */
1307 or1k_elf_check_relocs (bfd
*abfd
,
1308 struct bfd_link_info
*info
,
1310 const Elf_Internal_Rela
*relocs
)
1312 Elf_Internal_Shdr
*symtab_hdr
;
1313 struct elf_link_hash_entry
**sym_hashes
;
1314 const Elf_Internal_Rela
*rel
;
1316 const Elf_Internal_Rela
*rel_end
;
1317 struct elf_or1k_link_hash_table
*htab
;
1319 asection
*sreloc
= NULL
;
1321 if (bfd_link_relocatable (info
))
1324 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1325 sym_hashes
= elf_sym_hashes (abfd
);
1327 htab
= or1k_elf_hash_table (info
);
1331 dynobj
= htab
->root
.dynobj
;
1333 rel_end
= relocs
+ sec
->reloc_count
;
1334 for (rel
= relocs
; rel
< rel_end
; rel
++)
1336 struct elf_link_hash_entry
*h
;
1337 unsigned long r_symndx
;
1338 unsigned char tls_type
;
1340 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1341 if (r_symndx
< symtab_hdr
->sh_info
)
1345 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1346 while (h
->root
.type
== bfd_link_hash_indirect
1347 || h
->root
.type
== bfd_link_hash_warning
)
1348 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1351 switch (ELF32_R_TYPE (rel
->r_info
))
1353 case R_OR1K_TLS_GD_HI16
:
1354 case R_OR1K_TLS_GD_LO16
:
1357 case R_OR1K_TLS_LDM_HI16
:
1358 case R_OR1K_TLS_LDM_LO16
:
1359 case R_OR1K_TLS_LDO_HI16
:
1360 case R_OR1K_TLS_LDO_LO16
:
1363 case R_OR1K_TLS_IE_HI16
:
1364 case R_OR1K_TLS_IE_LO16
:
1367 case R_OR1K_TLS_LE_HI16
:
1368 case R_OR1K_TLS_LE_LO16
:
1372 tls_type
= TLS_NONE
;
1375 /* Record TLS type. */
1377 ((struct elf_or1k_link_hash_entry
*) h
)->tls_type
= tls_type
;
1380 unsigned char *local_tls_type
;
1382 /* This is a TLS type record for a local symbol. */
1383 local_tls_type
= (unsigned char *) elf_or1k_local_tls_type (abfd
);
1384 if (local_tls_type
== NULL
)
1388 size
= symtab_hdr
->sh_info
;
1389 local_tls_type
= bfd_zalloc (abfd
, size
);
1390 if (local_tls_type
== NULL
)
1392 elf_or1k_local_tls_type (abfd
) = local_tls_type
;
1394 local_tls_type
[r_symndx
] = tls_type
;
1397 switch (ELF32_R_TYPE (rel
->r_info
))
1399 /* This relocation describes the C++ object vtable hierarchy.
1400 Reconstruct it for later use during GC. */
1401 case R_OR1K_GNU_VTINHERIT
:
1402 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1406 /* This relocation describes which C++ vtable entries are actually
1407 used. Record for later use during GC. */
1408 case R_OR1K_GNU_VTENTRY
:
1409 BFD_ASSERT (h
!= NULL
);
1411 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1415 /* This relocation requires .plt entry. */
1420 h
->plt
.refcount
+= 1;
1425 case R_OR1K_GOTOFF_HI16
:
1426 case R_OR1K_GOTOFF_LO16
:
1427 case R_OR1K_TLS_GD_HI16
:
1428 case R_OR1K_TLS_GD_LO16
:
1429 case R_OR1K_TLS_IE_HI16
:
1430 case R_OR1K_TLS_IE_LO16
:
1431 if (htab
->root
.sgot
== NULL
)
1434 htab
->root
.dynobj
= dynobj
= abfd
;
1435 if (!_bfd_elf_create_got_section (dynobj
, info
))
1439 if (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_GOTOFF_HI16
&&
1440 ELF32_R_TYPE (rel
->r_info
) != R_OR1K_GOTOFF_LO16
)
1443 h
->got
.refcount
+= 1;
1446 bfd_signed_vma
*local_got_refcounts
;
1448 /* This is a global offset table entry for a local symbol. */
1449 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1450 if (local_got_refcounts
== NULL
)
1454 size
= symtab_hdr
->sh_info
;
1455 size
*= sizeof (bfd_signed_vma
);
1456 local_got_refcounts
= bfd_zalloc (abfd
, size
);
1457 if (local_got_refcounts
== NULL
)
1459 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1461 local_got_refcounts
[r_symndx
] += 1;
1466 case R_OR1K_INSN_REL_26
:
1467 case R_OR1K_HI_16_IN_INSN
:
1468 case R_OR1K_LO_16_IN_INSN
:
1472 if (h
!= NULL
&& !bfd_link_pic (info
))
1474 /* We may need a copy reloc. */
1477 /* We may also need a .plt entry. */
1478 h
->plt
.refcount
+= 1;
1479 if (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_INSN_REL_26
)
1480 h
->pointer_equality_needed
= 1;
1483 /* If we are creating a shared library, and this is a reloc
1484 against a global symbol, or a non PC relative reloc
1485 against a local symbol, then we need to copy the reloc
1486 into the shared library. However, if we are linking with
1487 -Bsymbolic, we do not need to copy a reloc against a
1488 global symbol which is defined in an object we are
1489 including in the link (i.e., DEF_REGULAR is set). At
1490 this point we have not seen all the input files, so it is
1491 possible that DEF_REGULAR is not set now but will be set
1492 later (it is never cleared). In case of a weak definition,
1493 DEF_REGULAR may be cleared later by a strong definition in
1494 a shared library. We account for that possibility below by
1495 storing information in the relocs_copied field of the hash
1496 table entry. A similar situation occurs when creating
1497 shared libraries and symbol visibility changes render the
1500 If on the other hand, we are creating an executable, we
1501 may need to keep relocations for symbols satisfied by a
1502 dynamic library if we manage to avoid copy relocs for the
1505 if ((bfd_link_pic (info
)
1506 && (sec
->flags
& SEC_ALLOC
) != 0
1507 && (ELF32_R_TYPE (rel
->r_info
) != R_OR1K_INSN_REL_26
1509 && (!SYMBOLIC_BIND (info
, h
)
1510 || h
->root
.type
== bfd_link_hash_defweak
1511 || !h
->def_regular
))))
1512 || (!bfd_link_pic (info
)
1513 && (sec
->flags
& SEC_ALLOC
) != 0
1515 && (h
->root
.type
== bfd_link_hash_defweak
1516 || !h
->def_regular
)))
1518 struct elf_or1k_dyn_relocs
*p
;
1519 struct elf_or1k_dyn_relocs
**head
;
1521 /* When creating a shared object, we must copy these
1522 relocs into the output file. We create a reloc
1523 section in dynobj and make room for the reloc. */
1527 unsigned int strndx
= elf_elfheader (abfd
)->e_shstrndx
;
1528 unsigned int shnam
= _bfd_elf_single_rel_hdr (sec
)->sh_name
;
1530 name
= bfd_elf_string_from_elf_section (abfd
, strndx
, shnam
);
1534 if (strncmp (name
, ".rela", 5) != 0
1535 || strcmp (bfd_get_section_name (abfd
, sec
),
1539 /* xgettext:c-format */
1540 (_("%B: bad relocation section name `%s\'"),
1544 if (htab
->root
.dynobj
== NULL
)
1545 htab
->root
.dynobj
= abfd
;
1546 dynobj
= htab
->root
.dynobj
;
1548 sreloc
= bfd_get_section_by_name (dynobj
, name
);
1551 sreloc
= _bfd_elf_make_dynamic_reloc_section
1552 (sec
, dynobj
, 2, abfd
, /*rela?*/ TRUE
);
1557 elf_section_data (sec
)->sreloc
= sreloc
;
1560 /* If this is a global symbol, we count the number of
1561 relocations we need for this symbol. */
1563 head
= &((struct elf_or1k_link_hash_entry
*) h
)->dyn_relocs
;
1566 /* Track dynamic relocs needed for local syms too.
1567 We really need local syms available to do this
1571 Elf_Internal_Sym
*isym
;
1574 isym
= bfd_sym_from_r_symndx (&htab
->sym_sec
,
1579 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1583 vpp
= &elf_section_data (s
)->local_dynrel
;
1584 head
= (struct elf_or1k_dyn_relocs
**) vpp
;
1588 if (p
== NULL
|| p
->sec
!= sec
)
1590 bfd_size_type amt
= sizeof *p
;
1591 p
= ((struct elf_or1k_dyn_relocs
*)
1592 bfd_alloc (htab
->root
.dynobj
, amt
));
1603 if (ELF32_R_TYPE (rel
->r_info
) == R_OR1K_INSN_REL_26
)
1614 /* Finish up the dynamic sections. */
1617 or1k_elf_finish_dynamic_sections (bfd
*output_bfd
,
1618 struct bfd_link_info
*info
)
1621 asection
*sdyn
, *sgot
;
1622 struct elf_or1k_link_hash_table
*htab
;
1624 htab
= or1k_elf_hash_table (info
);
1628 dynobj
= htab
->root
.dynobj
;
1630 sgot
= htab
->root
.sgotplt
;
1631 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
1633 if (htab
->root
.dynamic_sections_created
)
1636 Elf32_External_Dyn
*dyncon
, *dynconend
;
1638 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
1640 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
1641 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
1643 for (; dyncon
< dynconend
; dyncon
++)
1645 Elf_Internal_Dyn dyn
;
1648 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
1656 s
= htab
->root
.sgotplt
;
1657 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1661 s
= htab
->root
.srelplt
;
1662 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
1666 s
= htab
->root
.srelplt
;
1667 dyn
.d_un
.d_val
= s
->size
;
1670 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
1674 /* Fill in the first entry in the procedure linkage table. */
1675 splt
= htab
->root
.splt
;
1676 if (splt
&& splt
->size
> 0)
1678 if (bfd_link_pic (info
))
1680 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD0
,
1682 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD1
,
1683 splt
->contents
+ 4);
1684 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD2
,
1685 splt
->contents
+ 8);
1686 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD3
,
1687 splt
->contents
+ 12);
1688 bfd_put_32 (output_bfd
, PLT0_PIC_ENTRY_WORD4
,
1689 splt
->contents
+ 16);
1694 /* addr = .got + 4 */
1695 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
1696 bfd_put_32 (output_bfd
,
1697 PLT0_ENTRY_WORD0
| ((addr
>> 16) & 0xffff),
1699 bfd_put_32 (output_bfd
,
1700 PLT0_ENTRY_WORD1
| (addr
& 0xffff),
1701 splt
->contents
+ 4);
1702 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD2
, splt
->contents
+ 8);
1703 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD3
, splt
->contents
+ 12);
1704 bfd_put_32 (output_bfd
, PLT0_ENTRY_WORD4
, splt
->contents
+ 16);
1707 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
1711 /* Set the first entry in the global offset table to the address of
1712 the dynamic section. */
1713 if (sgot
&& sgot
->size
> 0)
1716 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
1718 bfd_put_32 (output_bfd
,
1719 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
1721 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1724 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
1725 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
1730 /* Finish up dynamic symbol handling. We set the contents of various
1731 dynamic sections here. */
1734 or1k_elf_finish_dynamic_symbol (bfd
*output_bfd
,
1735 struct bfd_link_info
*info
,
1736 struct elf_link_hash_entry
*h
,
1737 Elf_Internal_Sym
*sym
)
1739 struct elf_or1k_link_hash_table
*htab
;
1742 htab
= or1k_elf_hash_table (info
);
1746 if (h
->plt
.offset
!= (bfd_vma
) -1)
1755 Elf_Internal_Rela rela
;
1757 /* This symbol has an entry in the procedure linkage table. Set
1759 BFD_ASSERT (h
->dynindx
!= -1);
1761 splt
= htab
->root
.splt
;
1762 sgot
= htab
->root
.sgotplt
;
1763 srela
= htab
->root
.srelplt
;
1764 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
1766 /* Get the index in the procedure linkage table which
1767 corresponds to this symbol. This is the index of this symbol
1768 in all the symbols for which we are making plt entries. The
1769 first entry in the procedure linkage table is reserved. */
1770 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
1772 /* Get the offset into the .got table of the entry that
1773 corresponds to this function. Each .got entry is 4 bytes.
1774 The first three are reserved. */
1775 got_offset
= (plt_index
+ 3) * 4;
1776 got_addr
= got_offset
;
1778 /* Fill in the entry in the procedure linkage table. */
1779 if (! bfd_link_pic (info
))
1781 got_addr
+= htab
->root
.sgotplt
->output_section
->vma
1782 + htab
->root
.sgotplt
->output_offset
;
1783 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD0
| ((got_addr
>> 16) & 0xffff),
1784 splt
->contents
+ h
->plt
.offset
);
1785 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD1
| (got_addr
& 0xffff),
1786 splt
->contents
+ h
->plt
.offset
+ 4);
1787 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD2
,
1788 splt
->contents
+ h
->plt
.offset
+ 8);
1789 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_ENTRY_WORD3
,
1790 splt
->contents
+ h
->plt
.offset
+ 12);
1791 bfd_put_32 (output_bfd
, PLT_ENTRY_WORD4
1792 | plt_index
* sizeof (Elf32_External_Rela
),
1793 splt
->contents
+ h
->plt
.offset
+ 16);
1797 bfd_put_32 (output_bfd
, PLT_PIC_ENTRY_WORD0
| (got_addr
& 0xffff),
1798 splt
->contents
+ h
->plt
.offset
);
1799 bfd_put_32 (output_bfd
, PLT_PIC_ENTRY_WORD1
1800 | plt_index
* sizeof (Elf32_External_Rela
),
1801 splt
->contents
+ h
->plt
.offset
+ 4);
1802 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD2
,
1803 splt
->contents
+ h
->plt
.offset
+ 8);
1804 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD3
,
1805 splt
->contents
+ h
->plt
.offset
+ 12);
1806 bfd_put_32 (output_bfd
, (bfd_vma
) PLT_PIC_ENTRY_WORD4
,
1807 splt
->contents
+ h
->plt
.offset
+ 16);
1810 /* Fill in the entry in the global offset table. */
1811 bfd_put_32 (output_bfd
,
1812 (splt
->output_section
->vma
1813 + splt
->output_offset
), /* Same offset. */
1814 sgot
->contents
+ got_offset
);
1816 /* Fill in the entry in the .rela.plt section. */
1817 rela
.r_offset
= (sgot
->output_section
->vma
1818 + sgot
->output_offset
1820 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_JMP_SLOT
);
1822 loc
= srela
->contents
;
1823 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
1824 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1826 if (!h
->def_regular
)
1828 /* Mark the symbol as undefined, rather than as defined in
1829 the .plt section. Leave the value alone. */
1830 sym
->st_shndx
= SHN_UNDEF
;
1835 if (h
->got
.offset
!= (bfd_vma
) -1
1836 && (h
->got
.offset
& 2) == 0) /* Homemade TLS check. */
1840 Elf_Internal_Rela rela
;
1842 /* This symbol has an entry in the global offset table. Set it
1844 sgot
= htab
->root
.sgot
;
1845 srela
= htab
->root
.srelgot
;
1846 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
1848 rela
.r_offset
= (sgot
->output_section
->vma
1849 + sgot
->output_offset
1850 + (h
->got
.offset
&~ 1));
1852 /* If this is a -Bsymbolic link, and the symbol is defined
1853 locally, we just want to emit a RELATIVE reloc. Likewise if
1854 the symbol was forced to be local because of a version file.
1855 The entry in the global offset table will already have been
1856 initialized in the relocate_section function. */
1857 if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
1859 rela
.r_info
= ELF32_R_INFO (0, R_OR1K_RELATIVE
);
1860 rela
.r_addend
= (h
->root
.u
.def
.value
1861 + h
->root
.u
.def
.section
->output_section
->vma
1862 + h
->root
.u
.def
.section
->output_offset
);
1866 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
1867 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ h
->got
.offset
);
1868 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_GLOB_DAT
);
1872 loc
= srela
->contents
;
1873 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
1874 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1875 ++srela
->reloc_count
;
1881 Elf_Internal_Rela rela
;
1883 /* This symbols needs a copy reloc. Set it up. */
1884 BFD_ASSERT (h
->dynindx
!= -1
1885 && (h
->root
.type
== bfd_link_hash_defined
1886 || h
->root
.type
== bfd_link_hash_defweak
));
1888 rela
.r_offset
= (h
->root
.u
.def
.value
1889 + h
->root
.u
.def
.section
->output_section
->vma
1890 + h
->root
.u
.def
.section
->output_offset
);
1891 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_OR1K_COPY
);
1893 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
1894 s
= htab
->root
.sreldynrelro
;
1896 s
= htab
->root
.srelbss
;
1897 loc
= s
->contents
+ s
->reloc_count
* sizeof (Elf32_External_Rela
);
1898 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
1902 /* Mark some specially defined symbols as absolute. */
1903 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
1904 || h
== htab
->root
.hgot
)
1905 sym
->st_shndx
= SHN_ABS
;
1910 static enum elf_reloc_type_class
1911 or1k_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1912 const asection
*rel_sec ATTRIBUTE_UNUSED
,
1913 const Elf_Internal_Rela
*rela
)
1915 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1917 case R_OR1K_RELATIVE
: return reloc_class_relative
;
1918 case R_OR1K_JMP_SLOT
: return reloc_class_plt
;
1919 case R_OR1K_COPY
: return reloc_class_copy
;
1920 default: return reloc_class_normal
;
1924 /* Find dynamic relocs for H that apply to read-only sections. */
1927 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
1929 struct elf_or1k_dyn_relocs
*p
;
1930 struct elf_or1k_link_hash_entry
*eh
= (struct elf_or1k_link_hash_entry
*) h
;
1932 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
1934 asection
*s
= p
->sec
->output_section
;
1936 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
1942 /* Adjust a symbol defined by a dynamic object and referenced by a
1943 regular object. The current definition is in some section of the
1944 dynamic object, but we're not including those sections. We have to
1945 change the definition to something the rest of the link can
1949 or1k_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
1950 struct elf_link_hash_entry
*h
)
1952 struct elf_or1k_link_hash_table
*htab
;
1953 struct elf_or1k_link_hash_entry
*eh
;
1954 struct elf_or1k_dyn_relocs
*p
;
1958 dynobj
= elf_hash_table (info
)->dynobj
;
1960 /* Make sure we know what is going on here. */
1961 BFD_ASSERT (dynobj
!= NULL
1966 && !h
->def_regular
)));
1968 /* If this is a function, put it in the procedure linkage table. We
1969 will fill in the contents of the procedure linkage table later,
1970 when we know the address of the .got section. */
1971 if (h
->type
== STT_FUNC
1974 if (! bfd_link_pic (info
)
1977 && h
->root
.type
!= bfd_link_hash_undefweak
1978 && h
->root
.type
!= bfd_link_hash_undefined
)
1980 /* This case can occur if we saw a PLT reloc in an input
1981 file, but the symbol was never referred to by a dynamic
1982 object. In such a case, we don't actually need to build
1983 a procedure linkage table, and we can just do a PCREL
1985 h
->plt
.offset
= (bfd_vma
) -1;
1992 h
->plt
.offset
= (bfd_vma
) -1;
1994 /* If this is a weak symbol, and there is a real definition, the
1995 processor independent code will have arranged for us to see the
1996 real definition first, and we can just use the same value. */
1997 if (h
->is_weakalias
)
1999 struct elf_link_hash_entry
*def
= weakdef (h
);
2000 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
2001 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
2002 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
2006 /* This is a reference to a symbol defined by a dynamic object which
2007 is not a function. */
2009 /* If we are creating a shared library, we must presume that the
2010 only references to the symbol are via the global offset table.
2011 For such cases we need not do anything here; the relocations will
2012 be handled correctly by relocate_section. */
2013 if (bfd_link_pic (info
))
2016 /* If there are no references to this symbol that do not use the
2017 GOT, we don't need to generate a copy reloc. */
2018 if (!h
->non_got_ref
)
2021 /* If -z nocopyreloc was given, we won't generate them either. */
2022 if (info
->nocopyreloc
)
2028 eh
= (struct elf_or1k_link_hash_entry
*) h
;
2029 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2031 s
= p
->sec
->output_section
;
2032 if (s
!= NULL
&& (s
->flags
& (SEC_READONLY
| SEC_HAS_CONTENTS
)) != 0)
2036 /* If we didn't find any dynamic relocs in sections which needs the
2037 copy reloc, then we'll be keeping the dynamic relocs and avoiding
2045 /* We must allocate the symbol in our .dynbss section, which will
2046 become part of the .bss section of the executable. There will be
2047 an entry for this symbol in the .dynsym section. The dynamic
2048 object will contain position independent code, so all references
2049 from the dynamic object to this symbol will go through the global
2050 offset table. The dynamic linker will use the .dynsym entry to
2051 determine the address it must put in the global offset table, so
2052 both the dynamic object and the regular object will refer to the
2053 same memory location for the variable. */
2055 htab
= or1k_elf_hash_table (info
);
2059 /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
2060 to copy the initial value out of the dynamic object and into the
2061 runtime process image. We need to remember the offset into the
2062 .rela.bss section we are going to use. */
2063 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
2065 s
= htab
->root
.sdynrelro
;
2066 srel
= htab
->root
.sreldynrelro
;
2070 s
= htab
->root
.sdynbss
;
2071 srel
= htab
->root
.srelbss
;
2073 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
2075 srel
->size
+= sizeof (Elf32_External_Rela
);
2079 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
2082 /* Allocate space in .plt, .got and associated reloc sections for
2086 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
2088 struct bfd_link_info
*info
;
2089 struct elf_or1k_link_hash_table
*htab
;
2090 struct elf_or1k_link_hash_entry
*eh
;
2091 struct elf_or1k_dyn_relocs
*p
;
2093 if (h
->root
.type
== bfd_link_hash_indirect
)
2096 info
= (struct bfd_link_info
*) inf
;
2097 htab
= or1k_elf_hash_table (info
);
2101 eh
= (struct elf_or1k_link_hash_entry
*) h
;
2103 if (htab
->root
.dynamic_sections_created
2104 && h
->plt
.refcount
> 0)
2106 /* Make sure this symbol is output as a dynamic symbol.
2107 Undefined weak syms won't yet be marked as dynamic. */
2108 if (h
->dynindx
== -1
2109 && !h
->forced_local
)
2111 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2115 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
2117 asection
*s
= htab
->root
.splt
;
2119 /* If this is the first .plt entry, make room for the special
2122 s
->size
= PLT_ENTRY_SIZE
;
2124 h
->plt
.offset
= s
->size
;
2126 /* If this symbol is not defined in a regular file, and we are
2127 not generating a shared library, then set the symbol to this
2128 location in the .plt. This is required to make function
2129 pointers compare as equal between the normal executable and
2130 the shared library. */
2131 if (! bfd_link_pic (info
)
2134 h
->root
.u
.def
.section
= s
;
2135 h
->root
.u
.def
.value
= h
->plt
.offset
;
2138 /* Make room for this entry. */
2139 s
->size
+= PLT_ENTRY_SIZE
;
2141 /* We also need to make an entry in the .got.plt section, which
2142 will be placed in the .got section by the linker script. */
2143 htab
->root
.sgotplt
->size
+= 4;
2145 /* We also need to make an entry in the .rel.plt section. */
2146 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
2150 h
->plt
.offset
= (bfd_vma
) -1;
2156 h
->plt
.offset
= (bfd_vma
) -1;
2160 if (h
->got
.refcount
> 0)
2164 unsigned char tls_type
;
2166 /* Make sure this symbol is output as a dynamic symbol.
2167 Undefined weak syms won't yet be marked as dynamic. */
2168 if (h
->dynindx
== -1
2169 && !h
->forced_local
)
2171 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2175 s
= htab
->root
.sgot
;
2177 h
->got
.offset
= s
->size
;
2179 tls_type
= ((struct elf_or1k_link_hash_entry
*) h
)->tls_type
;
2181 /* TLS GD requires two GOT and two relocs. */
2182 if (tls_type
== TLS_GD
)
2186 dyn
= htab
->root
.dynamic_sections_created
;
2187 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
2189 if (tls_type
== TLS_GD
)
2190 htab
->root
.srelgot
->size
+= 2 * sizeof (Elf32_External_Rela
);
2192 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
2196 h
->got
.offset
= (bfd_vma
) -1;
2198 if (eh
->dyn_relocs
== NULL
)
2201 /* In the shared -Bsymbolic case, discard space allocated for
2202 dynamic pc-relative relocs against symbols which turn out to be
2203 defined in regular objects. For the normal shared case, discard
2204 space for pc-relative relocs that have become local due to symbol
2205 visibility changes. */
2207 if (bfd_link_pic (info
))
2209 if (SYMBOL_CALLS_LOCAL (info
, h
))
2211 struct elf_or1k_dyn_relocs
**pp
;
2213 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
2215 p
->count
-= p
->pc_count
;
2224 /* Also discard relocs on undefined weak syms with non-default
2226 if (eh
->dyn_relocs
!= NULL
2227 && h
->root
.type
== bfd_link_hash_undefweak
)
2229 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
2230 eh
->dyn_relocs
= NULL
;
2232 /* Make sure undefined weak symbols are output as a dynamic
2234 else if (h
->dynindx
== -1
2235 && !h
->forced_local
)
2237 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2244 /* For the non-shared case, discard space for relocs against
2245 symbols which turn out to need copy relocs or are not
2251 || (htab
->root
.dynamic_sections_created
2252 && (h
->root
.type
== bfd_link_hash_undefweak
2253 || h
->root
.type
== bfd_link_hash_undefined
))))
2255 /* Make sure this symbol is output as a dynamic symbol.
2256 Undefined weak syms won't yet be marked as dynamic. */
2257 if (h
->dynindx
== -1
2258 && !h
->forced_local
)
2260 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2264 /* If that succeeded, we know we'll be keeping all the
2266 if (h
->dynindx
!= -1)
2270 eh
->dyn_relocs
= NULL
;
2275 /* Finally, allocate space. */
2276 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2278 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
2279 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2285 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
2286 read-only sections. */
2289 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
2293 if (h
->root
.type
== bfd_link_hash_indirect
)
2296 sec
= readonly_dynrelocs (h
);
2299 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
2301 info
->flags
|= DF_TEXTREL
;
2302 info
->callbacks
->minfo
2303 (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"),
2304 sec
->owner
, h
->root
.root
.string
, sec
);
2306 /* Not an error, just cut short the traversal. */
2312 /* Set the sizes of the dynamic sections. */
2315 or1k_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2316 struct bfd_link_info
*info
)
2318 struct elf_or1k_link_hash_table
*htab
;
2324 htab
= or1k_elf_hash_table (info
);
2328 dynobj
= htab
->root
.dynobj
;
2329 BFD_ASSERT (dynobj
!= NULL
);
2331 if (htab
->root
.dynamic_sections_created
)
2333 /* Set the contents of the .interp section to the interpreter. */
2334 if (bfd_link_executable (info
) && !info
->nointerp
)
2336 s
= bfd_get_section_by_name (dynobj
, ".interp");
2337 BFD_ASSERT (s
!= NULL
);
2338 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
2339 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
2343 /* Set up .got offsets for local syms, and space for local dynamic
2345 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
2347 bfd_signed_vma
*local_got
;
2348 bfd_signed_vma
*end_local_got
;
2349 bfd_size_type locsymcount
;
2350 Elf_Internal_Shdr
*symtab_hdr
;
2351 unsigned char *local_tls_type
;
2354 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
2357 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2359 struct elf_or1k_dyn_relocs
*p
;
2361 for (p
= ((struct elf_or1k_dyn_relocs
*)
2362 elf_section_data (s
)->local_dynrel
);
2366 if (! bfd_is_abs_section (p
->sec
)
2367 && bfd_is_abs_section (p
->sec
->output_section
))
2369 /* Input section has been discarded, either because
2370 it is a copy of a linkonce section or due to
2371 linker script /DISCARD/, so we'll be discarding
2374 else if (p
->count
!= 0)
2376 srel
= elf_section_data (p
->sec
)->sreloc
;
2377 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
2378 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
2379 info
->flags
|= DF_TEXTREL
;
2384 local_got
= elf_local_got_refcounts (ibfd
);
2388 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
2389 locsymcount
= symtab_hdr
->sh_info
;
2390 end_local_got
= local_got
+ locsymcount
;
2391 s
= htab
->root
.sgot
;
2392 srel
= htab
->root
.srelgot
;
2393 local_tls_type
= (unsigned char *) elf_or1k_local_tls_type (ibfd
);
2394 for (; local_got
< end_local_got
; ++local_got
)
2398 *local_got
= s
->size
;
2400 /* TLS GD requires two GOT and two relocs. */
2401 if (local_tls_type
!= NULL
&& *local_tls_type
== TLS_GD
)
2405 if (bfd_link_pic (info
))
2407 if (local_tls_type
!= NULL
&& *local_tls_type
== TLS_GD
)
2408 srel
->size
+= 2 * sizeof (Elf32_External_Rela
);
2410 srel
->size
+= sizeof (Elf32_External_Rela
);
2415 *local_got
= (bfd_vma
) -1;
2422 /* Allocate global sym .plt and .got entries, and space for global
2423 sym dynamic relocs. */
2424 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, info
);
2426 /* We now have determined the sizes of the various dynamic sections.
2427 Allocate memory for them. */
2429 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
2431 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
2434 if (s
== htab
->root
.splt
2435 || s
== htab
->root
.sgot
2436 || s
== htab
->root
.sgotplt
2437 || s
== htab
->root
.sdynbss
2438 || s
== htab
->root
.sdynrelro
)
2440 /* Strip this section if we don't need it; see the
2443 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
2445 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
2448 /* We use the reloc_count field as a counter if we need
2449 to copy relocs into the output file. */
2453 /* It's not one of our sections, so don't allocate space. */
2458 /* If we don't need this section, strip it from the
2459 output file. This is mostly to handle .rela.bss and
2460 .rela.plt. We must create both sections in
2461 create_dynamic_sections, because they must be created
2462 before the linker maps input sections to output
2463 sections. The linker does that before
2464 adjust_dynamic_symbol is called, and it is that
2465 function which decides whether anything needs to go
2466 into these sections. */
2467 s
->flags
|= SEC_EXCLUDE
;
2471 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
2474 /* Allocate memory for the section contents. We use bfd_zalloc
2475 here in case unused entries are not reclaimed before the
2476 section's contents are written out. This should not happen,
2477 but this way if it does, we get a R_OR1K_NONE reloc instead
2479 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
2481 if (s
->contents
== NULL
)
2485 if (htab
->root
.dynamic_sections_created
)
2487 /* Add some entries to the .dynamic section. We fill in the
2488 values later, in or1k_elf_finish_dynamic_sections, but we
2489 must add the entries now so that we get the correct size for
2490 the .dynamic section. The DT_DEBUG entry is filled in by the
2491 dynamic linker and used by the debugger. */
2492 #define add_dynamic_entry(TAG, VAL) \
2493 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2495 if (bfd_link_executable (info
))
2497 if (! add_dynamic_entry (DT_DEBUG
, 0))
2501 if (htab
->root
.splt
->size
!= 0)
2503 if (! add_dynamic_entry (DT_PLTGOT
, 0)
2504 || ! add_dynamic_entry (DT_PLTRELSZ
, 0)
2505 || ! add_dynamic_entry (DT_PLTREL
, DT_RELA
)
2506 || ! add_dynamic_entry (DT_JMPREL
, 0))
2512 if (! add_dynamic_entry (DT_RELA
, 0)
2513 || ! add_dynamic_entry (DT_RELASZ
, 0)
2514 || ! add_dynamic_entry (DT_RELAENT
,
2515 sizeof (Elf32_External_Rela
)))
2518 /* If any dynamic relocs apply to a read-only section,
2519 then we need a DT_TEXTREL entry. */
2520 if ((info
->flags
& DF_TEXTREL
) == 0)
2521 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
2523 if ((info
->flags
& DF_TEXTREL
) != 0)
2525 if (! add_dynamic_entry (DT_TEXTREL
, 0))
2531 #undef add_dynamic_entry
2535 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2538 or1k_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
2539 struct elf_link_hash_entry
*dir
,
2540 struct elf_link_hash_entry
*ind
)
2542 struct elf_or1k_link_hash_entry
* edir
;
2543 struct elf_or1k_link_hash_entry
* eind
;
2545 edir
= (struct elf_or1k_link_hash_entry
*) dir
;
2546 eind
= (struct elf_or1k_link_hash_entry
*) ind
;
2548 if (eind
->dyn_relocs
!= NULL
)
2550 if (edir
->dyn_relocs
!= NULL
)
2552 struct elf_or1k_dyn_relocs
**pp
;
2553 struct elf_or1k_dyn_relocs
*p
;
2555 /* Add reloc counts against the indirect sym to the direct sym
2556 list. Merge any entries against the same section. */
2557 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2559 struct elf_or1k_dyn_relocs
*q
;
2561 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2562 if (q
->sec
== p
->sec
)
2564 q
->pc_count
+= p
->pc_count
;
2565 q
->count
+= p
->count
;
2572 *pp
= edir
->dyn_relocs
;
2575 edir
->dyn_relocs
= eind
->dyn_relocs
;
2576 eind
->dyn_relocs
= NULL
;
2579 if (ind
->root
.type
== bfd_link_hash_indirect
)
2581 if (dir
->got
.refcount
<= 0)
2583 edir
->tls_type
= eind
->tls_type
;
2584 eind
->tls_type
= TLS_UNKNOWN
;
2588 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2591 /* Set the right machine number. */
2594 or1k_elf_object_p (bfd
*abfd
)
2596 unsigned long mach
= bfd_mach_or1k
;
2598 if (elf_elfheader (abfd
)->e_flags
& EF_OR1K_NODELAY
)
2599 mach
= bfd_mach_or1knd
;
2601 return bfd_default_set_arch_mach (abfd
, bfd_arch_or1k
, mach
);
2604 /* Store the machine number in the flags field. */
2607 or1k_elf_final_write_processing (bfd
*abfd
,
2608 bfd_boolean linker ATTRIBUTE_UNUSED
)
2610 switch (bfd_get_mach (abfd
))
2615 case bfd_mach_or1knd
:
2616 elf_elfheader (abfd
)->e_flags
|= EF_OR1K_NODELAY
;
2622 or1k_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2624 BFD_ASSERT (!elf_flags_init (abfd
)
2625 || elf_elfheader (abfd
)->e_flags
== flags
);
2627 elf_elfheader (abfd
)->e_flags
= flags
;
2628 elf_flags_init (abfd
) = TRUE
;
2632 /* Make sure all input files are consistent with respect to
2633 EF_OR1K_NODELAY flag setting. */
2636 elf32_or1k_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
2638 bfd
*obfd
= info
->output_bfd
;
2642 in_flags
= elf_elfheader (ibfd
)->e_flags
;
2643 out_flags
= elf_elfheader (obfd
)->e_flags
;
2645 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2646 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2649 if (!elf_flags_init (obfd
))
2651 elf_flags_init (obfd
) = TRUE
;
2652 elf_elfheader (obfd
)->e_flags
= in_flags
;
2657 if (in_flags
== out_flags
)
2660 if ((in_flags
& EF_OR1K_NODELAY
) != (out_flags
& EF_OR1K_NODELAY
))
2663 (_("%B: EF_OR1K_NODELAY flag mismatch with previous modules"), ibfd
);
2665 bfd_set_error (bfd_error_bad_value
);
2673 #define ELF_ARCH bfd_arch_or1k
2674 #define ELF_MACHINE_CODE EM_OR1K
2675 #define ELF_TARGET_ID OR1K_ELF_DATA
2676 #define ELF_MAXPAGESIZE 0x2000
2678 #define TARGET_BIG_SYM or1k_elf32_vec
2679 #define TARGET_BIG_NAME "elf32-or1k"
2681 #define elf_info_to_howto_rel NULL
2682 #define elf_info_to_howto or1k_info_to_howto_rela
2683 #define elf_backend_relocate_section or1k_elf_relocate_section
2684 #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
2685 #define elf_backend_check_relocs or1k_elf_check_relocs
2686 #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
2687 #define elf_backend_can_gc_sections 1
2688 #define elf_backend_rela_normal 1
2690 #define bfd_elf32_mkobject elf_or1k_mkobject
2692 #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
2693 #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
2694 #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
2695 #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
2697 #define elf_backend_object_p or1k_elf_object_p
2698 #define elf_backend_final_write_processing or1k_elf_final_write_processing
2699 #define elf_backend_can_refcount 1
2701 #define elf_backend_plt_readonly 1
2702 #define elf_backend_want_got_plt 1
2703 #define elf_backend_want_plt_sym 0
2704 #define elf_backend_got_header_size 12
2705 #define elf_backend_dtrel_excludes_plt 1
2706 #define elf_backend_want_dynrelro 1
2708 #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
2709 #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
2710 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2711 #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
2712 #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
2713 #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
2714 #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
2716 #include "elf32-target.h"