1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* This file is based on the 64-bit PowerPC ELF ABI. It is also based
23 on the file elf32-ppc.c. */
32 #define USE_RELA /* we want RELA relocations, not REL. */
35 static void ppc_howto_init
37 static reloc_howto_type *ppc64_elf_reloc_type_lookup
38 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
39 static void ppc64_elf_info_to_howto
40 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
41 static bfd_reloc_status_type ppc64_elf_addr16_ha_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43 static boolean ppc64_elf_set_private_flags
44 PARAMS ((bfd *, flagword));
45 static boolean ppc64_elf_copy_private_bfd_data
46 PARAMS ((bfd *, bfd *));
47 static boolean ppc64_elf_merge_private_bfd_data
48 PARAMS ((bfd *, bfd *));
49 static boolean ppc64_elf_section_from_shdr
50 PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
51 static struct bfd_hash_entry *link_hash_newfunc
52 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
53 static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
55 static boolean create_got_section
56 PARAMS ((bfd *, struct bfd_link_info *));
57 static boolean ppc64_elf_create_dynamic_sections
58 PARAMS ((bfd *, struct bfd_link_info *));
59 static void ppc64_elf_copy_indirect_symbol
60 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
61 static boolean ppc64_elf_check_relocs
62 PARAMS ((bfd *, struct bfd_link_info *, asection *,
63 const Elf_Internal_Rela *));
64 static asection * ppc64_elf_gc_mark_hook
65 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
66 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
67 static boolean ppc64_elf_gc_sweep_hook
68 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
69 const Elf_Internal_Rela *relocs));
70 static boolean ppc64_elf_adjust_dynamic_symbol
71 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
72 static boolean allocate_dynrelocs
73 PARAMS ((struct elf_link_hash_entry *, PTR));
74 static boolean readonly_dynrelocs
75 PARAMS ((struct elf_link_hash_entry *, PTR));
76 static enum elf_reloc_type_class ppc64_elf_reloc_type_class
77 PARAMS ((const Elf_Internal_Rela *));
78 static boolean ppc64_elf_size_dynamic_sections
79 PARAMS ((bfd *, struct bfd_link_info *));
80 static boolean ppc64_elf_final_link
81 PARAMS ((bfd *, struct bfd_link_info *));
82 static boolean ppc64_elf_fake_sections
83 PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
84 static boolean ppc64_elf_relocate_section
85 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
86 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
88 static boolean ppc64_elf_finish_dynamic_symbol
89 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 static boolean ppc64_elf_finish_dynamic_sections
92 PARAMS ((bfd *, struct bfd_link_info *));
95 /* Branch prediction bit for branch taken relocs. */
96 #define BRANCH_PREDICT_BIT 0x200000
98 /* Mask to set RA in memory instructions. */
99 #define RA_REGISTER_MASK 0x001f0000
101 /* Value to shift register by to insert RA. */
102 #define RA_REGISTER_SHIFT 16
104 /* The name of the dynamic interpreter. This is put in the .interp
106 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
108 /* The size in bytes of an entry in the procedure linkage table. */
109 #define PLT_ENTRY_SIZE 24
111 /* The initial size of the plt reserved for the dynamic linker. */
112 #define PLT_INITIAL_ENTRY_SIZE 96
114 /* TOC base pointers offset from start of TOC. */
115 #define TOC_BASE_OFF (0x8000)
117 /* Global linkage stub. The first instruction has its offset patched. */
118 /* FIXME: Need traceback table? */
119 static const unsigned int ppc64_elf_glink_code[] = {
120 0xe9820000, /* ld %r12,0(%r2) */
121 0xf8410028, /* std %r2,40(%r1) */
122 0xe80c0000, /* ld %r0,0(%r12) */
123 0xe84c0008, /* ld %r2,8(%r12) */
124 0x7c0903a6, /* mtctr %r0 */
125 0x4e800420 /* bctr */
128 #define PPC64_ELF_GLINK_SIZE \
129 ((sizeof ppc64_elf_glink_code / sizeof ppc64_elf_glink_code[0]) * 4)
131 /* Relocation HOWTO's. */
132 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
134 static reloc_howto_type ppc64_elf_howto_raw[] = {
135 /* This reloc does nothing. */
136 HOWTO (R_PPC64_NONE, /* type */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
140 false, /* pc_relative */
142 complain_overflow_bitfield, /* complain_on_overflow */
143 bfd_elf_generic_reloc, /* special_function */
144 "R_PPC64_NONE", /* name */
145 false, /* partial_inplace */
148 false), /* pcrel_offset */
150 /* A standard 32 bit relocation. */
151 HOWTO (R_PPC64_ADDR32, /* type */
153 2, /* size (0 = byte, 1 = short, 2 = long) */
155 false, /* pc_relative */
157 complain_overflow_bitfield, /* complain_on_overflow */
158 bfd_elf_generic_reloc, /* special_function */
159 "R_PPC64_ADDR32", /* name */
160 false, /* partial_inplace */
162 0xffffffff, /* dst_mask */
163 false), /* pcrel_offset */
165 /* An absolute 26 bit branch; the lower two bits must be zero.
166 FIXME: we don't check that, we just clear them. */
167 HOWTO (R_PPC64_ADDR24, /* type */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
171 false, /* pc_relative */
173 complain_overflow_bitfield, /* complain_on_overflow */
174 bfd_elf_generic_reloc, /* special_function */
175 "R_PPC64_ADDR24", /* name */
176 false, /* partial_inplace */
178 0x3fffffc, /* dst_mask */
179 false), /* pcrel_offset */
181 /* A standard 16 bit relocation. */
182 HOWTO (R_PPC64_ADDR16, /* type */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
186 false, /* pc_relative */
188 complain_overflow_bitfield, /* complain_on_overflow */
189 bfd_elf_generic_reloc, /* special_function */
190 "R_PPC64_ADDR16", /* name */
191 false, /* partial_inplace */
193 0xffff, /* dst_mask */
194 false), /* pcrel_offset */
196 /* A 16 bit relocation without overflow. */
197 HOWTO (R_PPC64_ADDR16_LO, /* type */
199 1, /* size (0 = byte, 1 = short, 2 = long) */
201 false, /* pc_relative */
203 complain_overflow_dont,/* complain_on_overflow */
204 bfd_elf_generic_reloc, /* special_function */
205 "R_PPC64_ADDR16_LO", /* name */
206 false, /* partial_inplace */
208 0xffff, /* dst_mask */
209 false), /* pcrel_offset */
211 /* Bits 16-31 of an address. */
212 HOWTO (R_PPC64_ADDR16_HI, /* type */
214 1, /* size (0 = byte, 1 = short, 2 = long) */
216 false, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 bfd_elf_generic_reloc, /* special_function */
220 "R_PPC64_ADDR16_HI", /* name */
221 false, /* partial_inplace */
223 0xffff, /* dst_mask */
224 false), /* pcrel_offset */
226 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
227 bits, treated as a signed number, is negative. */
228 HOWTO (R_PPC64_ADDR16_HA, /* type */
230 1, /* size (0 = byte, 1 = short, 2 = long) */
232 false, /* pc_relative */
234 complain_overflow_dont, /* complain_on_overflow */
235 ppc64_elf_addr16_ha_reloc, /* special_function */
236 "R_PPC64_ADDR16_HA", /* name */
237 false, /* partial_inplace */
239 0xffff, /* dst_mask */
240 false), /* pcrel_offset */
242 /* An absolute 16 bit branch; the lower two bits must be zero.
243 FIXME: we don't check that, we just clear them. */
244 HOWTO (R_PPC64_ADDR14, /* type */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
248 false, /* pc_relative */
250 complain_overflow_bitfield, /* complain_on_overflow */
251 bfd_elf_generic_reloc, /* special_function */
252 "R_PPC64_ADDR14", /* name */
253 false, /* partial_inplace */
255 0xfffc, /* dst_mask */
256 false), /* pcrel_offset */
258 /* An absolute 16 bit branch, for which bit 10 should be set to
259 indicate that the branch is expected to be taken. The lower two
260 bits must be zero. */
261 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 false, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR14_BRTAKEN",/* name */
270 false, /* partial_inplace */
272 0xfffc, /* dst_mask */
273 false), /* pcrel_offset */
275 /* An absolute 16 bit branch, for which bit 10 should be set to
276 indicate that the branch is not expected to be taken. The lower
277 two bits must be zero. */
278 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
280 2, /* size (0 = byte, 1 = short, 2 = long) */
282 false, /* pc_relative */
284 complain_overflow_bitfield, /* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_PPC64_ADDR14_BRNTAKEN",/* name */
287 false, /* partial_inplace */
289 0xfffc, /* dst_mask */
290 false), /* pcrel_offset */
292 /* A relative 26 bit branch; the lower two bits must be zero. */
293 HOWTO (R_PPC64_REL24, /* type */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
297 true, /* pc_relative */
299 complain_overflow_signed, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_PPC64_REL24", /* name */
302 false, /* partial_inplace */
304 0x3fffffc, /* dst_mask */
305 true), /* pcrel_offset */
307 /* A relative 16 bit branch; the lower two bits must be zero. */
308 HOWTO (R_PPC64_REL14, /* type */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
312 true, /* pc_relative */
314 complain_overflow_signed, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_PPC64_REL14", /* name */
317 false, /* partial_inplace */
319 0xfffc, /* dst_mask */
320 true), /* pcrel_offset */
322 /* A relative 16 bit branch. Bit 10 should be set to indicate that
323 the branch is expected to be taken. The lower two bits must be
325 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
327 2, /* size (0 = byte, 1 = short, 2 = long) */
329 true, /* pc_relative */
331 complain_overflow_signed, /* complain_on_overflow */
332 bfd_elf_generic_reloc, /* special_function */
333 "R_PPC64_REL14_BRTAKEN", /* name */
334 false, /* partial_inplace */
336 0xfffc, /* dst_mask */
337 true), /* pcrel_offset */
339 /* A relative 16 bit branch. Bit 10 should be set to indicate that
340 the branch is not expected to be taken. The lower two bits must
342 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
344 2, /* size (0 = byte, 1 = short, 2 = long) */
346 true, /* pc_relative */
348 complain_overflow_signed, /* complain_on_overflow */
349 bfd_elf_generic_reloc, /* special_function */
350 "R_PPC64_REL14_BRNTAKEN",/* name */
351 false, /* partial_inplace */
353 0xfffc, /* dst_mask */
354 true), /* pcrel_offset */
356 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
358 HOWTO (R_PPC64_GOT16, /* type */
360 1, /* size (0 = byte, 1 = short, 2 = long) */
362 false, /* pc_relative */
364 complain_overflow_signed, /* complain_on_overflow */
365 bfd_elf_generic_reloc, /* special_function */
366 "R_PPC64_GOT16", /* name */
367 false, /* partial_inplace */
369 0xffff, /* dst_mask */
370 false), /* pcrel_offset */
372 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
374 HOWTO (R_PPC64_GOT16_LO, /* type */
376 1, /* size (0 = byte, 1 = short, 2 = long) */
378 false, /* pc_relative */
380 complain_overflow_dont, /* complain_on_overflow */
381 bfd_elf_generic_reloc, /* special_function */
382 "R_PPC64_GOT16_LO", /* name */
383 false, /* partial_inplace */
385 0xffff, /* dst_mask */
386 false), /* pcrel_offset */
388 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
390 HOWTO (R_PPC64_GOT16_HI, /* type */
392 1, /* size (0 = byte, 1 = short, 2 = long) */
394 false, /* pc_relative */
396 complain_overflow_dont,/* complain_on_overflow */
397 bfd_elf_generic_reloc, /* special_function */
398 "R_PPC64_GOT16_HI", /* name */
399 false, /* partial_inplace */
401 0xffff, /* dst_mask */
402 false), /* pcrel_offset */
404 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
406 HOWTO (R_PPC64_GOT16_HA, /* type */
408 1, /* size (0 = byte, 1 = short, 2 = long) */
410 false, /* pc_relative */
412 complain_overflow_dont,/* complain_on_overflow */
413 ppc64_elf_addr16_ha_reloc, /* special_function */
414 "R_PPC64_GOT16_HA", /* name */
415 false, /* partial_inplace */
417 0xffff, /* dst_mask */
418 false), /* pcrel_offset */
420 /* This is used only by the dynamic linker. The symbol should exist
421 both in the object being run and in some shared library. The
422 dynamic linker copies the data addressed by the symbol from the
423 shared library into the object, because the object being
424 run has to have the data at some particular address. */
425 HOWTO (R_PPC64_COPY, /* type */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
429 false, /* pc_relative */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC64_COPY", /* name */
434 false, /* partial_inplace */
437 false), /* pcrel_offset */
439 /* Like R_PPC64_ADDR64, but used when setting global offset table
441 HOWTO (R_PPC64_GLOB_DAT, /* type */
443 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
445 false, /* pc_relative */
447 complain_overflow_dont, /* complain_on_overflow */
448 bfd_elf_generic_reloc, /* special_function */
449 "R_PPC64_GLOB_DAT", /* name */
450 false, /* partial_inplace */
452 0xffffffffffffffff, /* dst_mask */
453 false), /* pcrel_offset */
455 /* Created by the link editor. Marks a procedure linkage table
456 entry for a symbol. */
457 HOWTO (R_PPC64_JMP_SLOT, /* type */
459 0, /* 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_PPC64_JMP_SLOT", /* name */
466 false, /* partial_inplace */
469 false), /* pcrel_offset */
471 /* Used only by the dynamic linker. When the object is run, this
472 doubleword64 is set to the load address of the object, plus the
474 HOWTO (R_PPC64_RELATIVE, /* type */
476 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
478 false, /* pc_relative */
480 complain_overflow_dont, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_PPC64_RELATIVE", /* name */
483 false, /* partial_inplace */
485 0xffffffffffffffff, /* dst_mask */
486 false), /* pcrel_offset */
488 /* Like R_PPC64_ADDR32, but may be unaligned. */
489 HOWTO (R_PPC64_UADDR32, /* type */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
493 false, /* pc_relative */
495 complain_overflow_bitfield, /* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_PPC64_UADDR32", /* name */
498 false, /* partial_inplace */
500 0xffffffff, /* dst_mask */
501 false), /* pcrel_offset */
503 /* Like R_PPC64_ADDR16, but may be unaligned. */
504 HOWTO (R_PPC64_UADDR16, /* type */
506 1, /* size (0 = byte, 1 = short, 2 = long) */
508 false, /* pc_relative */
510 complain_overflow_bitfield, /* complain_on_overflow */
511 bfd_elf_generic_reloc, /* special_function */
512 "R_PPC64_UADDR16", /* name */
513 false, /* partial_inplace */
515 0xffff, /* dst_mask */
516 false), /* pcrel_offset */
518 /* 32-bit PC relative. */
519 HOWTO (R_PPC64_REL32, /* type */
521 2, /* size (0 = byte, 1 = short, 2 = long) */
523 true, /* pc_relative */
525 /* FIXME: Verify. Was complain_overflow_bitfield. */
526 complain_overflow_signed, /* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_PPC64_REL32", /* name */
529 false, /* partial_inplace */
531 0xffffffff, /* dst_mask */
532 true), /* pcrel_offset */
534 /* 32-bit relocation to the symbol's procedure linkage table.
535 FIXME: R_PPC64_PLT32 not supported. */
536 HOWTO (R_PPC64_PLT32, /* type */
538 2, /* size (0 = byte, 1 = short, 2 = long) */
540 false, /* pc_relative */
542 complain_overflow_bitfield, /* complain_on_overflow */
543 bfd_elf_generic_reloc, /* special_function */
544 "R_PPC64_PLT32", /* name */
545 false, /* partial_inplace */
548 false), /* pcrel_offset */
550 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
551 FIXME: R_PPC64_PLTREL32 not supported. */
552 HOWTO (R_PPC64_PLTREL32, /* type */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
556 true, /* pc_relative */
558 complain_overflow_signed, /* complain_on_overflow */
559 bfd_elf_generic_reloc, /* special_function */
560 "R_PPC64_PLTREL32", /* name */
561 false, /* partial_inplace */
564 true), /* pcrel_offset */
566 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
568 HOWTO (R_PPC64_PLT16_LO, /* type */
570 1, /* size (0 = byte, 1 = short, 2 = long) */
572 false, /* pc_relative */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_PLT16_LO", /* name */
577 false, /* partial_inplace */
579 0xffff, /* dst_mask */
580 false), /* pcrel_offset */
582 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
584 HOWTO (R_PPC64_PLT16_HI, /* type */
586 1, /* size (0 = byte, 1 = short, 2 = long) */
588 false, /* pc_relative */
590 complain_overflow_dont, /* complain_on_overflow */
591 bfd_elf_generic_reloc, /* special_function */
592 "R_PPC64_PLT16_HI", /* name */
593 false, /* partial_inplace */
595 0xffff, /* dst_mask */
596 false), /* pcrel_offset */
598 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
600 HOWTO (R_PPC64_PLT16_HA, /* type */
602 1, /* size (0 = byte, 1 = short, 2 = long) */
604 false, /* pc_relative */
606 complain_overflow_dont, /* complain_on_overflow */
607 ppc64_elf_addr16_ha_reloc, /* special_function */
608 "R_PPC64_PLT16_HA", /* name */
609 false, /* partial_inplace */
611 0xffff, /* dst_mask */
612 false), /* pcrel_offset */
614 /* 32-bit section relative relocation. */
615 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
617 HOWTO (R_PPC64_SECTOFF, /* type */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
621 true, /* pc_relative */
623 complain_overflow_bitfield, /* complain_on_overflow */
624 bfd_elf_generic_reloc, /* special_function */
625 "R_PPC64_SECTOFF", /* name */
626 false, /* partial_inplace */
629 true), /* pcrel_offset */
631 /* 16-bit lower half section relative relocation. */
632 HOWTO (R_PPC64_SECTOFF_LO, /* type */
634 1, /* size (0 = byte, 1 = short, 2 = long) */
636 false, /* pc_relative */
638 complain_overflow_dont, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC64_SECTOFF_LO", /* name */
641 false, /* partial_inplace */
643 0xffff, /* dst_mask */
644 false), /* pcrel_offset */
646 /* 16-bit upper half section relative relocation. */
647 HOWTO (R_PPC64_SECTOFF_HI, /* type */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
651 false, /* pc_relative */
653 complain_overflow_dont, /* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_PPC64_SECTOFF_HI", /* name */
656 false, /* partial_inplace */
658 0xffff, /* dst_mask */
659 false), /* pcrel_offset */
661 /* 16-bit upper half adjusted section relative relocation. */
662 HOWTO (R_PPC64_SECTOFF_HA, /* type */
664 1, /* size (0 = byte, 1 = short, 2 = long) */
666 false, /* pc_relative */
668 complain_overflow_dont, /* complain_on_overflow */
669 ppc64_elf_addr16_ha_reloc, /* special_function */
670 "R_PPC64_SECTOFF_HA", /* name */
671 false, /* partial_inplace */
673 0xffff, /* dst_mask */
674 false), /* pcrel_offset */
676 /* Like R_PPC64_REL24 without touching the two least significant
678 /* FIXME: Verify R_PPC64_ADDR30. */
679 HOWTO (R_PPC64_ADDR30, /* type */
681 2, /* size (0 = byte, 1 = short, 2 = long) */
683 true, /* pc_relative */
685 complain_overflow_dont, /* complain_on_overflow */
686 bfd_elf_generic_reloc, /* special_function */
687 "R_PPC64_ADDR30", /* name */
688 false, /* partial_inplace */
690 0xfffffffc, /* dst_mask */
691 true), /* pcrel_offset */
693 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
695 /* A standard 64-bit relocation. */
696 HOWTO (R_PPC64_ADDR64, /* type */
698 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
700 false, /* pc_relative */
702 complain_overflow_dont, /* complain_on_overflow */
703 bfd_elf_generic_reloc, /* special_function */
704 "R_PPC64_ADDR64", /* name */
705 false, /* partial_inplace */
707 0xffffffffffffffff, /* dst_mask */
708 false), /* pcrel_offset */
710 /* The bits 32-47 of an address. */
711 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
715 false, /* pc_relative */
717 complain_overflow_dont, /* complain_on_overflow */
718 bfd_elf_generic_reloc, /* special_function */
719 "R_PPC64_ADDR16_HIGHER", /* name */
720 false, /* partial_inplace */
722 0xffff, /* dst_mask */
723 false), /* pcrel_offset */
725 /* The bits 32-47 of an address, plus 1 if the contents of the low
726 16 bits, treated as a signed number, is negative. */
727 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 false, /* pc_relative */
733 complain_overflow_dont, /* complain_on_overflow */
734 ppc64_elf_addr16_ha_reloc, /* special_function */
735 "R_PPC64_ADDR16_HIGHERA", /* name */
736 false, /* partial_inplace */
738 0xffff, /* dst_mask */
739 false), /* pcrel_offset */
741 /* The bits 48-63 of an address. */
742 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
746 false, /* pc_relative */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
750 "R_PPC64_ADDR16_HIGHEST", /* name */
751 false, /* partial_inplace */
753 0xffff, /* dst_mask */
754 false), /* pcrel_offset */
756 /* The bits 48-63 of an address, plus 1 if the contents of the low
757 16 bits, treated as a signed number, is negative. */
758 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
762 false, /* pc_relative */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc64_elf_addr16_ha_reloc, /* special_function */
766 "R_PPC64_ADDR16_HIGHESTA", /* name */
767 false, /* partial_inplace */
769 0xffff, /* dst_mask */
770 false), /* pcrel_offset */
772 /* Like ADDR64, but may be unaligned. */
773 HOWTO (R_PPC64_UADDR64, /* type */
775 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
777 false, /* pc_relative */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC64_UADDR64", /* name */
782 false, /* partial_inplace */
784 0xffffffffffffffff, /* dst_mask */
785 false), /* pcrel_offset */
787 /* 64-bit relative relocation. */
788 HOWTO (R_PPC64_REL64, /* type */
790 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
792 true, /* pc_relative */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC64_REL64", /* name */
797 false, /* partial_inplace */
799 0xffffffffffffffff, /* dst_mask */
800 true), /* pcrel_offset */
802 /* 64-bit relocation to the symbol's procedure linkage table. */
803 /* FIXME: R_PPC64_PLT64 not supported. */
804 HOWTO (R_PPC64_PLT64, /* type */
806 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
808 false, /* pc_relative */
810 complain_overflow_dont, /* complain_on_overflow */
811 bfd_elf_generic_reloc, /* special_function */
812 "R_PPC64_PLT64", /* name */
813 false, /* partial_inplace */
816 false), /* pcrel_offset */
818 /* 64-bit PC relative relocation to the symbol's procedure linkage
820 /* FIXME: R_PPC64_PLTREL64 not supported. */
821 HOWTO (R_PPC64_PLTREL64, /* type */
823 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
825 true, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_PPC64_PLTREL64", /* name */
830 false, /* partial_inplace */
833 true), /* pcrel_offset */
835 /* 16 bit TOC-relative relocation. */
837 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
838 HOWTO (R_PPC64_TOC16, /* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 false, /* pc_relative */
844 complain_overflow_signed, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_TOC16", /* name */
847 false, /* partial_inplace */
849 0xffff, /* dst_mask */
850 false), /* pcrel_offset */
852 /* 16 bit TOC-relative relocation without overflow. */
854 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
855 HOWTO (R_PPC64_TOC16_LO, /* type */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 false, /* pc_relative */
861 complain_overflow_dont, /* complain_on_overflow */
862 bfd_elf_generic_reloc, /* special_function */
863 "R_PPC64_TOC16_LO", /* name */
864 false, /* partial_inplace */
866 0xffff, /* dst_mask */
867 false), /* pcrel_offset */
869 /* 16 bit TOC-relative relocation, high 16 bits. */
871 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
872 HOWTO (R_PPC64_TOC16_HI, /* type */
874 1, /* size (0 = byte, 1 = short, 2 = long) */
876 false, /* pc_relative */
878 complain_overflow_dont, /* complain_on_overflow */
879 bfd_elf_generic_reloc, /* special_function */
880 "R_PPC64_TOC16_HI", /* name */
881 false, /* partial_inplace */
883 0xffff, /* dst_mask */
884 false), /* pcrel_offset */
886 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
887 contents of the low 16 bits, treated as a signed number, is
890 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
891 HOWTO (R_PPC64_TOC16_HA, /* type */
893 1, /* size (0 = byte, 1 = short, 2 = long) */
895 false, /* pc_relative */
897 complain_overflow_dont, /* complain_on_overflow */
898 ppc64_elf_addr16_ha_reloc, /* special_function */
899 "R_PPC64_TOC16_HA", /* name */
900 false, /* partial_inplace */
902 0xffff, /* dst_mask */
903 false), /* pcrel_offset */
905 /* 64-bit relocation; insert value of TOC base (.TOC.). */
907 /* R_PPC64_TOC 51 doubleword64 .TOC. */
908 HOWTO (R_PPC64_TOC, /* type */
910 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
912 false, /* pc_relative */
914 complain_overflow_bitfield, /* complain_on_overflow */
915 bfd_elf_generic_reloc, /* special_function */
916 "R_PPC64_TOC", /* name */
917 false, /* partial_inplace */
919 0xffffffffffffffff, /* dst_mask */
920 false), /* pcrel_offset */
922 /* Like R_PPC64_GOT16, but also informs the link editor that the
923 value to relocate may (!) refer to a PLT entry which the link
924 editor (a) may replace with the symbol value. If the link editor
925 is unable to fully resolve the symbol, it may (b) create a PLT
926 entry and store the address to the new PLT entry in the GOT.
927 This permits lazy resolution of function symbols at run time.
928 The link editor may also skip all of this and just (c) emit a
929 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
930 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
931 HOWTO (R_PPC64_PLTGOT16, /* type */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
935 false, /* pc_relative */
937 complain_overflow_signed, /* complain_on_overflow */
938 bfd_elf_generic_reloc, /* special_function */
939 "R_PPC64_PLTGOT16", /* name */
940 false, /* partial_inplace */
942 0xffff, /* dst_mask */
943 false), /* pcrel_offset */
945 /* Like R_PPC64_PLTGOT16, but without overflow. */
946 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
947 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
949 1, /* size (0 = byte, 1 = short, 2 = long) */
951 false, /* pc_relative */
953 complain_overflow_dont, /* complain_on_overflow */
954 bfd_elf_generic_reloc, /* special_function */
955 "R_PPC64_PLTGOT16_LO", /* name */
956 false, /* partial_inplace */
958 0xffff, /* dst_mask */
959 false), /* pcrel_offset */
961 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
962 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
963 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
965 1, /* size (0 = byte, 1 = short, 2 = long) */
967 false, /* pc_relative */
969 complain_overflow_dont, /* complain_on_overflow */
970 bfd_elf_generic_reloc, /* special_function */
971 "R_PPC64_PLTGOT16_HI", /* name */
972 false, /* partial_inplace */
974 0xffff, /* dst_mask */
975 false), /* pcrel_offset */
977 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
978 1 if the contents of the low 16 bits, treated as a signed number,
980 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
981 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
985 false, /* pc_relative */
987 complain_overflow_dont,/* complain_on_overflow */
988 ppc64_elf_addr16_ha_reloc, /* special_function */
989 "R_PPC64_PLTGOT16_HA", /* name */
990 false, /* partial_inplace */
992 0xffff, /* dst_mask */
993 false), /* pcrel_offset */
995 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
996 HOWTO (R_PPC64_ADDR16_DS, /* type */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 false, /* pc_relative */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 bfd_elf_generic_reloc, /* special_function */
1004 "R_PPC64_ADDR16_DS", /* name */
1005 false, /* partial_inplace */
1007 0xfffc, /* dst_mask */
1008 false), /* pcrel_offset */
1010 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1011 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 false, /* pc_relative */
1017 complain_overflow_dont,/* complain_on_overflow */
1018 bfd_elf_generic_reloc, /* special_function */
1019 "R_PPC64_ADDR16_LO_DS",/* name */
1020 false, /* partial_inplace */
1022 0xfffc, /* dst_mask */
1023 false), /* pcrel_offset */
1025 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1026 HOWTO (R_PPC64_GOT16_DS, /* type */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 false, /* pc_relative */
1032 complain_overflow_signed, /* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
1034 "R_PPC64_GOT16_DS", /* name */
1035 false, /* partial_inplace */
1037 0xfffc, /* dst_mask */
1038 false), /* pcrel_offset */
1040 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1041 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 false, /* pc_relative */
1047 complain_overflow_dont, /* complain_on_overflow */
1048 bfd_elf_generic_reloc, /* special_function */
1049 "R_PPC64_GOT16_LO_DS", /* name */
1050 false, /* partial_inplace */
1052 0xfffc, /* dst_mask */
1053 false), /* pcrel_offset */
1055 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1056 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 false, /* pc_relative */
1062 complain_overflow_dont, /* complain_on_overflow */
1063 bfd_elf_generic_reloc, /* special_function */
1064 "R_PPC64_PLT16_LO_DS", /* name */
1065 false, /* partial_inplace */
1067 0xfffc, /* dst_mask */
1068 false), /* pcrel_offset */
1070 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1071 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
1073 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1077 true, /* pc_relative */
1079 complain_overflow_bitfield, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_SECTOFF_DS", /* name */
1082 false, /* partial_inplace */
1085 true), /* pcrel_offset */
1087 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 false, /* pc_relative */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 bfd_elf_generic_reloc, /* special_function */
1096 "R_PPC64_SECTOFF_LO_DS",/* name */
1097 false, /* partial_inplace */
1099 0xfffc, /* dst_mask */
1100 false), /* pcrel_offset */
1102 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_TOC16_DS, /* type */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1107 false, /* pc_relative */
1109 complain_overflow_signed, /* complain_on_overflow */
1110 bfd_elf_generic_reloc, /* special_function */
1111 "R_PPC64_TOC16_DS", /* name */
1112 false, /* partial_inplace */
1114 0xfffc, /* dst_mask */
1115 false), /* pcrel_offset */
1117 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1122 false, /* pc_relative */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 bfd_elf_generic_reloc, /* special_function */
1126 "R_PPC64_TOC16_LO_DS", /* name */
1127 false, /* partial_inplace */
1129 0xfffc, /* dst_mask */
1130 false), /* pcrel_offset */
1132 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1133 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1134 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 false, /* pc_relative */
1140 complain_overflow_signed, /* complain_on_overflow */
1141 bfd_elf_generic_reloc, /* special_function */
1142 "R_PPC64_PLTGOT16_DS", /* name */
1143 false, /* partial_inplace */
1145 0xfffc, /* dst_mask */
1146 false), /* pcrel_offset */
1148 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1149 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1150 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 false, /* pc_relative */
1156 complain_overflow_dont, /* complain_on_overflow */
1157 bfd_elf_generic_reloc, /* special_function */
1158 "R_PPC64_PLTGOT16_LO_DS",/* name */
1159 false, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 false), /* pcrel_offset */
1164 /* GNU extension to record C++ vtable hierarchy. */
1165 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1167 0, /* size (0 = byte, 1 = short, 2 = long) */
1169 false, /* pc_relative */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 NULL, /* special_function */
1173 "R_PPC64_GNU_VTINHERIT", /* name */
1174 false, /* partial_inplace */
1177 false), /* pcrel_offset */
1179 /* GNU extension to record C++ vtable member usage. */
1180 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1182 0, /* size (0 = byte, 1 = short, 2 = long) */
1184 false, /* pc_relative */
1186 complain_overflow_dont, /* complain_on_overflow */
1187 NULL, /* special_function */
1188 "R_PPC64_GNU_VTENTRY", /* name */
1189 false, /* partial_inplace */
1192 false), /* pcrel_offset */
1196 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1202 unsigned int i, type;
1205 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1208 type = ppc64_elf_howto_raw[i].type;
1209 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1210 / sizeof (ppc64_elf_howto_table[0])));
1211 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1215 static reloc_howto_type *
1216 ppc64_elf_reloc_type_lookup (abfd, code)
1217 bfd *abfd ATTRIBUTE_UNUSED;
1218 bfd_reloc_code_real_type code;
1220 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1222 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1223 /* Initialize howto table if needed. */
1229 return (reloc_howto_type *) NULL;
1231 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1233 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1235 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1237 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1239 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1241 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1243 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1245 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1247 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1249 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1251 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1253 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1255 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1257 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1259 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1261 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1263 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1265 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1267 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1269 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1271 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1273 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1275 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1277 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1279 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1281 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1283 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
1285 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1287 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1289 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1291 /* FIXME: Is CTOR 32 or 64 bits? Fix md_apply_fix3 in
1292 gas/config/tc-ppc.c too. */
1293 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR32;
1295 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1297 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1299 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1301 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1303 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1305 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1307 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1309 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1311 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1313 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1315 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1317 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1319 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1321 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1323 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1325 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1327 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1329 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1331 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1333 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1335 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1337 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1339 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1341 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1343 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1345 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1347 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1349 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1351 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1353 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1357 return ppc64_elf_howto_table[(int) ppc_reloc];
1360 /* Set the howto pointer for a PowerPC ELF reloc. */
1363 ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1364 bfd *abfd ATTRIBUTE_UNUSED;
1366 Elf64_Internal_Rela *dst;
1370 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1371 /* Initialize howto table if needed. */
1374 type = ELF64_R_TYPE (dst->r_info);
1375 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1376 / sizeof (ppc64_elf_howto_table[0])));
1377 cache_ptr->howto = ppc64_elf_howto_table[type];
1380 /* Handle the R_PPC_ADDR16_HA and similar relocs. */
1382 static bfd_reloc_status_type
1383 ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1384 output_bfd, error_message)
1385 bfd *abfd ATTRIBUTE_UNUSED;
1386 arelent *reloc_entry;
1388 PTR data ATTRIBUTE_UNUSED;
1389 asection *input_section;
1391 char **error_message ATTRIBUTE_UNUSED;
1395 if (output_bfd != NULL)
1397 reloc_entry->address += input_section->output_offset;
1398 return bfd_reloc_ok;
1401 if (reloc_entry->address > input_section->_cooked_size)
1402 return bfd_reloc_outofrange;
1404 if (bfd_is_com_section (symbol->section))
1407 relocation = symbol->value;
1409 relocation += symbol->section->output_section->vma;
1410 relocation += symbol->section->output_offset;
1411 relocation += reloc_entry->addend;
1413 reloc_entry->addend += (relocation & 0x8000) << 1;
1415 return bfd_reloc_continue;
1418 /* Function to set whether a module needs the -mrelocatable bit set. */
1421 ppc64_elf_set_private_flags (abfd, flags)
1425 BFD_ASSERT (!elf_flags_init (abfd)
1426 || elf_elfheader (abfd)->e_flags == flags);
1428 elf_elfheader (abfd)->e_flags = flags;
1429 elf_flags_init (abfd) = true;
1433 /* Copy backend specific data from one object module to another. */
1435 ppc64_elf_copy_private_bfd_data (ibfd, obfd)
1439 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1440 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1443 BFD_ASSERT (!elf_flags_init (obfd)
1444 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
1446 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1447 elf_flags_init (obfd) = true;
1451 /* Merge backend specific data from an object file to the output
1452 object file when linking. */
1454 ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1462 /* Check if we have the same endianess. */
1463 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1464 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1468 if (bfd_big_endian (ibfd))
1469 msg = _("%s: compiled for a big endian system and target is little endian");
1471 msg = _("%s: compiled for a little endian system and target is big endian");
1473 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
1475 bfd_set_error (bfd_error_wrong_format);
1479 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1480 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1483 new_flags = elf_elfheader (ibfd)->e_flags;
1484 old_flags = elf_elfheader (obfd)->e_flags;
1485 if (!elf_flags_init (obfd))
1487 /* First call, no flags set. */
1488 elf_flags_init (obfd) = true;
1489 elf_elfheader (obfd)->e_flags = new_flags;
1492 else if (new_flags == old_flags)
1493 /* Compatible flags are ok. */
1498 /* Incompatible flags. Warn about -mrelocatable mismatch.
1499 Allow -mrelocatable-lib to be linked with either. */
1501 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1502 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1505 (*_bfd_error_handler)
1506 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
1507 bfd_archive_filename (ibfd));
1509 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1510 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1513 (*_bfd_error_handler)
1514 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
1515 bfd_archive_filename (ibfd));
1518 /* The output is -mrelocatable-lib iff both the input files are. */
1519 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1520 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1522 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1523 but each input file is either -mrelocatable or -mrelocatable-lib. */
1524 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1525 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1526 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1527 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1529 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
1530 if any module uses it. */
1531 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1533 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1534 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1536 /* Warn about any other mismatches. */
1537 if (new_flags != old_flags)
1540 (*_bfd_error_handler)
1541 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
1542 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
1547 bfd_set_error (bfd_error_bad_value);
1555 /* Handle a PowerPC specific section when reading an object file. This
1556 is called when elfcode.h finds a section with an unknown type. */
1559 ppc64_elf_section_from_shdr (abfd, hdr, name)
1561 Elf64_Internal_Shdr *hdr;
1567 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1570 newsect = hdr->bfd_section;
1571 flags = bfd_get_section_flags (abfd, newsect);
1572 if (hdr->sh_flags & SHF_EXCLUDE)
1573 flags |= SEC_EXCLUDE;
1575 if (hdr->sh_type == SHT_ORDERED)
1576 flags |= SEC_SORT_ENTRIES;
1578 bfd_set_section_flags (abfd, newsect, flags);
1582 /* The following functions are specific to the ELF linker, while
1583 functions above are used generally. Those named ppc64_elf_* are
1584 called by the main ELF linker code. They appear in this file more
1585 or less in the order in which they are called. eg.
1586 ppc64_elf_check_relocs is called early in the link process,
1587 ppc64_elf_finish_dynamic_sections is one of the last functions
1590 /* The linker needs to keep track of the number of relocs that it
1591 decides to copy as dynamic relocs in check_relocs for each symbol.
1592 This is so that it can later discard them if they are found to be
1593 unnecessary. We store the information in a field extending the
1594 regular ELF linker hash table. */
1596 struct ppc_dyn_relocs
1598 struct ppc_dyn_relocs *next;
1600 /* The input section of the reloc. */
1603 /* Total number of relocs copied for the input section. */
1604 bfd_size_type count;
1606 /* Number of pc-relative relocs copied for the input section. */
1607 bfd_size_type pc_count;
1610 /* Of those relocs that might be copied as dynamic relocs, this macro
1611 selects between relative and absolute types. */
1613 #define IS_ABSOLUTE_RELOC(RTYPE) \
1614 ((RTYPE) != R_PPC64_REL14 \
1615 && (RTYPE) != R_PPC64_REL14_BRNTAKEN \
1616 && (RTYPE) != R_PPC64_REL14_BRTAKEN \
1617 && (RTYPE) != R_PPC64_REL24 \
1618 && (RTYPE) != R_PPC64_REL32 \
1619 && (RTYPE) != R_PPC64_REL64)
1621 /* ppc64 ELF linker hash entry. */
1623 struct ppc_link_hash_entry
1625 struct elf_link_hash_entry elf;
1627 /* Track dynamic relocs copied for this symbol. */
1628 struct ppc_dyn_relocs *dyn_relocs;
1631 /* ppc64 ELF linker hash table. */
1633 struct ppc_link_hash_table
1635 struct elf_link_hash_table elf;
1637 /* Short-cuts to get to dynamic linker sections. */
1647 /* Get the ppc64 ELF linker hash table from a link_info structure. */
1649 #define ppc_hash_table(p) \
1650 ((struct ppc_link_hash_table *) ((p)->hash))
1652 /* Create an entry in a ppc64 ELF linker hash table. */
1654 static struct bfd_hash_entry *
1655 link_hash_newfunc (entry, table, string)
1656 struct bfd_hash_entry *entry;
1657 struct bfd_hash_table *table;
1660 /* Allocate the structure if it has not already been allocated by a
1664 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
1669 /* Call the allocation method of the superclass. */
1670 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1673 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
1675 eh->dyn_relocs = NULL;
1681 /* Create a ppc64 ELF linker hash table. */
1683 static struct bfd_link_hash_table *
1684 ppc64_elf_link_hash_table_create (abfd)
1687 struct ppc_link_hash_table *htab;
1688 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
1690 htab = (struct ppc_link_hash_table *) bfd_alloc (abfd, amt);
1694 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
1696 bfd_release (abfd, htab);
1701 htab->srelgot = NULL;
1703 htab->srelplt = NULL;
1704 htab->sdynbss = NULL;
1705 htab->srelbss = NULL;
1706 htab->sglink = NULL;
1708 return &htab->elf.root;
1711 /* Create .got and .rela.got sections in DYNOBJ, and set up
1712 shortcuts to them in our hash table. */
1715 create_got_section (dynobj, info)
1717 struct bfd_link_info *info;
1719 struct ppc_link_hash_table *htab;
1721 if (! _bfd_elf_create_got_section (dynobj, info))
1724 htab = ppc_hash_table (info);
1725 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1729 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
1731 || ! bfd_set_section_flags (dynobj, htab->srelgot,
1732 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1733 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1735 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
1740 /* Create the .glink section as well as the ordinary dynamic
1744 ppc64_elf_create_dynamic_sections (dynobj, info)
1746 struct bfd_link_info *info;
1748 struct ppc_link_hash_table *htab;
1751 htab = ppc_hash_table (info);
1752 if (!htab->sgot && !create_got_section (dynobj, info))
1755 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1758 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1759 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
1760 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1762 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1764 if (!htab->splt || !htab->srelplt || !htab->sdynbss
1765 || (!info->shared && !htab->srelbss))
1768 /* Our .plt just contains pointers, no code. */
1769 flags = bfd_get_section_flags (dynobj, htab->splt);
1771 if (! bfd_set_section_flags (dynobj, htab->splt, flags))
1774 /* Create .glink for global linkage functions. */
1775 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1776 | SEC_LINKER_CREATED);
1777 htab->sglink = bfd_make_section (dynobj, ".glink");
1778 if (htab->sglink == NULL
1779 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
1780 || ! bfd_set_section_alignment (dynobj, htab->sglink, 3))
1786 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1789 ppc64_elf_copy_indirect_symbol (dir, ind)
1790 struct elf_link_hash_entry *dir, *ind;
1792 struct ppc_link_hash_entry *edir, *eind;
1794 edir = (struct ppc_link_hash_entry *) dir;
1795 eind = (struct ppc_link_hash_entry *) ind;
1797 if (edir->dyn_relocs == NULL)
1799 edir->dyn_relocs = eind->dyn_relocs;
1800 eind->dyn_relocs = NULL;
1802 else if (eind->dyn_relocs != NULL)
1805 _bfd_elf_link_hash_copy_indirect (dir, ind);
1808 /* Look through the relocs for a section during the first phase, and
1809 calculate needed space in the global offset table, procedure
1810 linkage table, and dynamic reloc sections. */
1813 ppc64_elf_check_relocs (abfd, info, sec, relocs)
1815 struct bfd_link_info *info;
1817 const Elf_Internal_Rela *relocs;
1819 struct ppc_link_hash_table *htab;
1820 Elf_Internal_Shdr *symtab_hdr;
1821 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1822 const Elf_Internal_Rela *rel;
1823 const Elf_Internal_Rela *rel_end;
1826 if (info->relocateable)
1829 htab = ppc_hash_table (info);
1830 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1832 sym_hashes = elf_sym_hashes (abfd);
1833 sym_hashes_end = (sym_hashes
1834 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
1835 if (!elf_bad_symtab (abfd))
1836 sym_hashes_end -= symtab_hdr->sh_info;
1840 rel_end = relocs + sec->reloc_count;
1841 for (rel = relocs; rel < rel_end; rel++)
1843 unsigned long r_symndx;
1844 struct elf_link_hash_entry *h;
1846 r_symndx = ELF64_R_SYM (rel->r_info);
1847 if (r_symndx < symtab_hdr->sh_info)
1850 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1852 switch (ELF64_R_TYPE (rel->r_info))
1854 /* GOT16 relocations */
1856 case R_PPC64_GOT16_DS:
1857 case R_PPC64_GOT16_HA:
1858 case R_PPC64_GOT16_HI:
1859 case R_PPC64_GOT16_LO:
1860 case R_PPC64_GOT16_LO_DS:
1862 /* This symbol requires a global offset table entry. */
1863 if (htab->sgot == NULL)
1865 if (htab->elf.dynobj == NULL)
1866 htab->elf.dynobj = abfd;
1867 if (!create_got_section (htab->elf.dynobj, info))
1873 h->got.refcount += 1;
1877 bfd_signed_vma *local_got_refcounts;
1879 /* This is a global offset table entry for a local symbol. */
1880 local_got_refcounts = elf_local_got_refcounts (abfd);
1881 if (local_got_refcounts == NULL)
1885 size = symtab_hdr->sh_info;
1886 size *= sizeof (bfd_signed_vma);
1887 local_got_refcounts = ((bfd_signed_vma *)
1888 bfd_zalloc (abfd, size));
1889 if (local_got_refcounts == NULL)
1891 elf_local_got_refcounts (abfd) = local_got_refcounts;
1893 local_got_refcounts[r_symndx] += 1;
1897 case R_PPC64_PLT16_HA:
1898 case R_PPC64_PLT16_HI:
1899 case R_PPC64_PLT16_LO:
1902 /* This symbol requires a procedure linkage table entry. We
1903 actually build the entry in adjust_dynamic_symbol,
1904 because this might be a case of linking PIC code without
1905 linking in any dynamic objects, in which case we don't
1906 need to generate a procedure linkage table after all. */
1909 /* It does not make sense to have a procedure linkage
1910 table entry for a local symbol. */
1911 bfd_set_error (bfd_error_bad_value);
1915 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1916 h->plt.refcount += 1;
1919 /* The following relocations don't need to propagate the
1920 relocation if linking a shared object since they are
1921 section relative. */
1922 case R_PPC64_SECTOFF:
1923 case R_PPC64_SECTOFF_LO:
1924 case R_PPC64_SECTOFF_HI:
1925 case R_PPC64_SECTOFF_HA:
1926 case R_PPC64_SECTOFF_DS:
1927 case R_PPC64_SECTOFF_LO_DS:
1929 case R_PPC64_TOC16_LO:
1930 case R_PPC64_TOC16_HI:
1931 case R_PPC64_TOC16_HA:
1932 case R_PPC64_TOC16_DS:
1933 case R_PPC64_TOC16_LO_DS:
1936 /* This relocation describes the C++ object vtable hierarchy.
1937 Reconstruct it for later use during GC. */
1938 case R_PPC64_GNU_VTINHERIT:
1939 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1943 /* This relocation describes which C++ vtable entries are actually
1944 used. Record for later use during GC. */
1945 case R_PPC64_GNU_VTENTRY:
1946 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1954 case R_PPC64_REL14_BRTAKEN:
1955 case R_PPC64_REL14_BRNTAKEN:
1956 case R_PPC64_ADDR14:
1957 case R_PPC64_ADDR14_BRNTAKEN:
1958 case R_PPC64_ADDR14_BRTAKEN:
1959 case R_PPC64_ADDR16:
1960 case R_PPC64_ADDR16_DS:
1961 case R_PPC64_ADDR16_HA:
1962 case R_PPC64_ADDR16_HI:
1963 case R_PPC64_ADDR16_HIGHER:
1964 case R_PPC64_ADDR16_HIGHERA:
1965 case R_PPC64_ADDR16_HIGHEST:
1966 case R_PPC64_ADDR16_HIGHESTA:
1967 case R_PPC64_ADDR16_LO:
1968 case R_PPC64_ADDR16_LO_DS:
1969 case R_PPC64_ADDR24:
1970 case R_PPC64_ADDR30:
1971 case R_PPC64_ADDR32:
1972 case R_PPC64_ADDR64:
1973 case R_PPC64_UADDR16:
1974 case R_PPC64_UADDR32:
1975 case R_PPC64_UADDR64:
1977 /* If we are creating a shared library, and this is a reloc
1978 against a global symbol, or a non PC relative reloc
1979 against a local symbol, then we need to copy the reloc
1980 into the shared library. However, if we are linking with
1981 -Bsymbolic, we do not need to copy a reloc against a
1982 global symbol which is defined in an object we are
1983 including in the link (i.e., DEF_REGULAR is set). At
1984 this point we have not seen all the input files, so it is
1985 possible that DEF_REGULAR is not set now but will be set
1986 later (it is never cleared). In case of a weak definition,
1987 DEF_REGULAR may be cleared later by a strong definition in
1988 a shared library. We account for that possibility below by
1989 storing information in the relocs_copied field of the hash
1990 table entry. A similar situation occurs when creating
1991 shared libraries and symbol visibility changes render the
1994 If on the other hand, we are creating an executable, we
1995 may need to keep relocations for symbols satisfied by a
1996 dynamic library if we manage to avoid copy relocs for the
1999 && (sec->flags & SEC_ALLOC) != 0
2000 && (IS_ABSOLUTE_RELOC (ELF64_R_TYPE (rel->r_info))
2002 && (! info->symbolic
2003 || h->root.type == bfd_link_hash_defweak
2004 || (h->elf_link_hash_flags
2005 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2007 && (sec->flags & SEC_ALLOC) != 0
2009 && (h->root.type == bfd_link_hash_defweak
2010 || (h->elf_link_hash_flags
2011 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
2013 /* We must copy these reloc types into the output file.
2014 Create a reloc section in dynobj and make room for
2021 name = (bfd_elf_string_from_elf_section
2023 elf_elfheader (abfd)->e_shstrndx,
2024 elf_section_data (sec)->rel_hdr.sh_name));
2028 if (strncmp (name, ".rela", 5) != 0
2029 || strcmp (bfd_get_section_name (abfd, sec),
2032 (*_bfd_error_handler)
2033 (_("%s: bad relocation section name `%s\'"),
2034 bfd_archive_filename (abfd), name);
2037 if (htab->elf.dynobj == NULL)
2038 htab->elf.dynobj = abfd;
2040 dynobj = htab->elf.dynobj;
2041 sreloc = bfd_get_section_by_name (dynobj, name);
2046 sreloc = bfd_make_section (dynobj, name);
2047 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2048 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2049 if ((sec->flags & SEC_ALLOC) != 0)
2050 flags |= SEC_ALLOC | SEC_LOAD;
2052 || ! bfd_set_section_flags (dynobj, sreloc, flags)
2053 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
2056 elf_section_data (sec)->sreloc = sreloc;
2059 /* If this is a global symbol, we count the number of
2060 relocations we need for this symbol. */
2063 struct ppc_link_hash_entry *eh;
2064 struct ppc_dyn_relocs *p;
2066 eh = (struct ppc_link_hash_entry *) h;
2069 if (p == NULL || p->sec != sec)
2071 p = ((struct ppc_dyn_relocs *)
2072 bfd_alloc (htab->elf.dynobj,
2073 (bfd_size_type) sizeof *p));
2076 p->next = eh->dyn_relocs;
2084 if (!IS_ABSOLUTE_RELOC (ELF64_R_TYPE (rel->r_info)))
2089 /* Track dynamic relocs needed for local syms too. */
2090 elf_section_data (sec)->local_dynrel += 1;
2102 /* Return the section that should be marked against GC for a given
2106 ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
2108 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2109 Elf_Internal_Rela *rel;
2110 struct elf_link_hash_entry *h;
2111 Elf_Internal_Sym *sym;
2115 switch (ELF64_R_TYPE (rel->r_info))
2117 case R_PPC64_GNU_VTINHERIT:
2118 case R_PPC64_GNU_VTENTRY:
2122 switch (h->root.type)
2124 case bfd_link_hash_defined:
2125 case bfd_link_hash_defweak:
2126 return h->root.u.def.section;
2128 case bfd_link_hash_common:
2129 return h->root.u.c.p->section;
2138 if (! (elf_bad_symtab (abfd)
2139 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
2140 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
2141 && sym->st_shndx != SHN_COMMON))
2143 return bfd_section_from_elf_index (abfd, sym->st_shndx);
2150 /* Update the .got, .plt. and dynamic reloc reference counts for the
2151 section being removed. */
2154 ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2156 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2158 const Elf_Internal_Rela *relocs;
2160 Elf_Internal_Shdr *symtab_hdr;
2161 struct elf_link_hash_entry **sym_hashes;
2162 bfd_signed_vma *local_got_refcounts;
2163 const Elf_Internal_Rela *rel, *relend;
2164 unsigned long r_symndx;
2165 struct elf_link_hash_entry *h;
2167 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2168 sym_hashes = elf_sym_hashes (abfd);
2169 local_got_refcounts = elf_local_got_refcounts (abfd);
2171 relend = relocs + sec->reloc_count;
2172 for (rel = relocs; rel < relend; rel++)
2173 switch (ELF64_R_TYPE (rel->r_info))
2176 case R_PPC64_GOT16_DS:
2177 case R_PPC64_GOT16_HA:
2178 case R_PPC64_GOT16_HI:
2179 case R_PPC64_GOT16_LO:
2180 case R_PPC64_GOT16_LO_DS:
2181 r_symndx = ELF64_R_SYM (rel->r_info);
2182 if (r_symndx >= symtab_hdr->sh_info)
2184 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2185 if (h->got.refcount > 0)
2190 if (local_got_refcounts[r_symndx] > 0)
2191 local_got_refcounts[r_symndx]--;
2195 case R_PPC64_PLT16_HA:
2196 case R_PPC64_PLT16_HI:
2197 case R_PPC64_PLT16_LO:
2200 r_symndx = ELF64_R_SYM (rel->r_info);
2201 if (r_symndx >= symtab_hdr->sh_info)
2203 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2204 if (h->plt.refcount > 0)
2210 case R_PPC64_REL14_BRNTAKEN:
2211 case R_PPC64_REL14_BRTAKEN:
2215 r_symndx = ELF64_R_SYM (rel->r_info);
2216 if (r_symndx >= symtab_hdr->sh_info)
2218 struct ppc_link_hash_entry *eh;
2219 struct ppc_dyn_relocs **pp;
2220 struct ppc_dyn_relocs *p;
2222 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2223 eh = (struct ppc_link_hash_entry *) h;
2225 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2237 case R_PPC64_ADDR14:
2238 case R_PPC64_ADDR14_BRNTAKEN:
2239 case R_PPC64_ADDR14_BRTAKEN:
2240 case R_PPC64_ADDR16:
2241 case R_PPC64_ADDR16_DS:
2242 case R_PPC64_ADDR16_HA:
2243 case R_PPC64_ADDR16_HI:
2244 case R_PPC64_ADDR16_HIGHER:
2245 case R_PPC64_ADDR16_HIGHERA:
2246 case R_PPC64_ADDR16_HIGHEST:
2247 case R_PPC64_ADDR16_HIGHESTA:
2248 case R_PPC64_ADDR16_LO:
2249 case R_PPC64_ADDR16_LO_DS:
2250 case R_PPC64_ADDR24:
2251 case R_PPC64_ADDR30:
2252 case R_PPC64_ADDR32:
2253 case R_PPC64_ADDR64:
2254 case R_PPC64_UADDR16:
2255 case R_PPC64_UADDR32:
2256 case R_PPC64_UADDR64:
2258 r_symndx = ELF64_R_SYM (rel->r_info);
2259 if (r_symndx >= symtab_hdr->sh_info)
2261 struct ppc_link_hash_entry *eh;
2262 struct ppc_dyn_relocs **pp;
2263 struct ppc_dyn_relocs *p;
2265 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2266 eh = (struct ppc_link_hash_entry *) h;
2268 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2286 /* Adjust a symbol defined by a dynamic object and referenced by a
2287 regular object. The current definition is in some section of the
2288 dynamic object, but we're not including those sections. We have to
2289 change the definition to something the rest of the link can
2293 ppc64_elf_adjust_dynamic_symbol (info, h)
2294 struct bfd_link_info *info;
2295 struct elf_link_hash_entry *h;
2297 struct ppc_link_hash_table *htab;
2298 struct ppc_link_hash_entry * eh;
2299 struct ppc_dyn_relocs *p;
2301 unsigned int power_of_two;
2303 htab = ppc_hash_table (info);
2305 /* If this is a function, put it in the procedure linkage table. We
2306 will fill in the contents of the procedure linkage table later. */
2307 if (h->type == STT_FUNC
2308 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2310 struct elf_link_hash_entry *fdh;
2312 /* If it's a function entry point, the name starts with a dot
2313 unless someone has written some poor assembly code. The ABI
2314 for .plt calls requires that there be a function descriptor
2315 sym which has the name of the function minus the dot. */
2317 if (h->plt.refcount <= 0
2318 || h->root.root.string[0] != '.'
2319 || h->root.root.string[1] == '\0'
2321 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2322 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
2324 /* This case can occur if we saw a PLT reloc in an input
2325 file, but the symbol was never referred to by a dynamic
2326 object, or if all references were garbage collected. In
2327 such a case, we don't actually need to build a procedure
2328 linkage table entry. */
2329 h->plt.offset = (bfd_vma) -1;
2330 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2334 /* Find the corresponding function descriptor symbol. Create it
2335 as undefined if necessary. ppc_elf64_finish_dynamic_symbol
2336 will look it up again and create a JMP_SLOT reloc for it. */
2338 fdh = elf_link_hash_lookup (elf_hash_table (info),
2339 h->root.root.string + 1,
2340 false, false, false);
2346 /* Create it as undefined. */
2347 newsym = bfd_make_empty_symbol (htab->elf.dynobj);
2348 newsym->name = h->root.root.string + 1;
2349 newsym->section = bfd_und_section_ptr;
2351 newsym->flags = BSF_DYNAMIC | BSF_OBJECT;
2353 if ( !(_bfd_generic_link_add_one_symbol
2354 (info, htab->elf.dynobj, newsym->name, newsym->flags,
2355 newsym->section, newsym->value, NULL, false, false,
2356 (struct bfd_link_hash_entry **) &fdh)))
2364 /* If this is a weak symbol, and there is a real definition, the
2365 processor independent code will have arranged for us to see the
2366 real definition first, and we can just use the same value. */
2367 if (h->weakdef != NULL)
2369 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2370 || h->weakdef->root.type == bfd_link_hash_defweak);
2371 h->root.u.def.section = h->weakdef->root.u.def.section;
2372 h->root.u.def.value = h->weakdef->root.u.def.value;
2375 /* This is a reference to a symbol defined by a dynamic object which
2376 is not a function. */
2378 /* If we are creating a shared library, we must presume that the
2379 only references to the symbol are via the global offset table.
2380 For such cases we need not do anything here; the relocations will
2381 be handled correctly by relocate_section. */
2385 /* If there are no references to this symbol that do not use the
2386 GOT, we don't need to generate a copy reloc. */
2387 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2390 eh = (struct ppc_link_hash_entry *) h;
2391 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2393 s = p->sec->output_section;
2394 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2398 /* If we didn't find any dynamic relocs in read-only sections, then
2399 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2402 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2406 /* We must allocate the symbol in our .dynbss section, which will
2407 become part of the .bss section of the executable. There will be
2408 an entry for this symbol in the .dynsym section. The dynamic
2409 object will contain position independent code, so all references
2410 from the dynamic object to this symbol will go through the global
2411 offset table. The dynamic linker will use the .dynsym entry to
2412 determine the address it must put in the global offset table, so
2413 both the dynamic object and the regular object will refer to the
2414 same memory location for the variable. */
2416 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2417 copy the initial value out of the dynamic object and into the
2418 runtime process image. We need to remember the offset into the
2419 .rela.bss section we are going to use. */
2420 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2422 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
2423 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2426 /* We need to figure out the alignment required for this symbol. I
2427 have no idea how ELF linkers handle this. */
2428 power_of_two = bfd_log2 (h->size);
2429 if (power_of_two > 4)
2432 /* Apply the required alignment. */
2434 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
2435 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
2437 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
2441 /* Define the symbol as being at this point in the section. */
2442 h->root.u.def.section = s;
2443 h->root.u.def.value = s->_raw_size;
2445 /* Increment the section size to make room for the symbol. */
2446 s->_raw_size += h->size;
2451 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
2452 will be called from elflink.h. If elflink.h doesn't call our
2453 finish_dynamic_symbol routine, we'll need to do something about
2454 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
2455 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
2457 && ((INFO)->shared \
2458 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
2459 && ((H)->dynindx != -1 \
2460 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
2462 /* Allocate space in .plt, .got and associated reloc sections for
2466 allocate_dynrelocs (h, inf)
2467 struct elf_link_hash_entry *h;
2470 struct bfd_link_info *info;
2471 struct ppc_link_hash_table *htab;
2473 struct ppc_link_hash_entry *eh;
2474 struct ppc_dyn_relocs *p;
2476 if (h->root.type == bfd_link_hash_indirect
2477 || h->root.type == bfd_link_hash_warning)
2480 info = (struct bfd_link_info *) inf;
2481 htab = ppc_hash_table (info);
2483 if (htab->elf.dynamic_sections_created
2484 && h->plt.refcount > 0)
2486 /* Make sure this symbol is output as a dynamic symbol.
2487 Undefined weak syms won't yet be marked as dynamic. */
2488 if (h->dynindx == -1
2489 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2491 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2495 BFD_ASSERT (h->root.root.string[0] == '.'
2496 && h->root.root.string[1] != '\0');
2498 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2500 /* Make sure the corresponding function descriptor symbol is
2503 if (h->dynindx != -1)
2505 struct elf_link_hash_entry *fdh;
2507 fdh = elf_link_hash_lookup (elf_hash_table (info),
2508 h->root.root.string + 1,
2509 false, false, false);
2514 if (fdh->dynindx == -1
2515 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2517 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
2522 /* If this is the first .plt entry, make room for the special
2525 if (s->_raw_size == 0)
2526 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
2528 h->plt.offset = s->_raw_size;
2530 /* Make room for this entry. */
2531 s->_raw_size += PLT_ENTRY_SIZE;
2533 /* Point the function at the linkage stub. This works because
2534 the only references to the function code sym are calls.
2535 Function pointer comparisons use the function descriptor. */
2537 h->root.type = bfd_link_hash_defined;
2538 h->root.u.def.section = s;
2539 h->root.u.def.value = s->_raw_size;
2540 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2542 /* Make room for global linkage code in .glink. */
2543 s->_raw_size += PPC64_ELF_GLINK_SIZE;
2545 /* We also need to make an entry in the .rela.plt section. */
2547 s->_raw_size += sizeof (Elf64_External_Rela);
2551 h->plt.offset = (bfd_vma) -1;
2552 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2557 h->plt.offset = (bfd_vma) -1;
2558 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2561 if (h->got.refcount > 0)
2565 /* Make sure this symbol is output as a dynamic symbol.
2566 Undefined weak syms won't yet be marked as dynamic. */
2567 if (h->dynindx == -1
2568 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2570 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2575 h->got.offset = s->_raw_size;
2577 dyn = htab->elf.dynamic_sections_created;
2578 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2579 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2582 h->got.offset = (bfd_vma) -1;
2584 eh = (struct ppc_link_hash_entry *) h;
2585 if (eh->dyn_relocs == NULL)
2588 /* In the shared -Bsymbolic case, discard space allocated for
2589 dynamic pc-relative relocs against symbols which turn out to be
2590 defined in regular objects. For the normal shared case, discard
2591 space for relocs that have become local due to symbol visibility
2596 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2597 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2600 struct ppc_dyn_relocs **pp;
2602 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2604 p->count -= p->pc_count;
2615 /* For the non-shared case, discard space for relocs against
2616 symbols which turn out to need copy relocs or are not
2619 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2620 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2621 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2622 || (htab->elf.dynamic_sections_created
2623 && (h->root.type == bfd_link_hash_undefweak
2624 || h->root.type == bfd_link_hash_undefined))))
2626 /* Make sure this symbol is output as a dynamic symbol.
2627 Undefined weak syms won't yet be marked as dynamic. */
2628 if (h->dynindx == -1
2629 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2631 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2635 /* If that succeeded, we know we'll be keeping all the
2637 if (h->dynindx != -1)
2641 eh->dyn_relocs = NULL;
2646 /* Finally, allocate space. */
2647 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2649 asection *sreloc = elf_section_data (p->sec)->sreloc;
2650 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
2656 /* Find any dynamic relocs that apply to read-only sections. */
2659 readonly_dynrelocs (h, inf)
2660 struct elf_link_hash_entry *h;
2663 struct ppc_link_hash_entry *eh;
2664 struct ppc_dyn_relocs *p;
2666 eh = (struct ppc_link_hash_entry *) h;
2667 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2669 asection *s = p->sec->output_section;
2671 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2673 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2675 info->flags |= DF_TEXTREL;
2677 /* Not an error, just cut short the traversal. */
2684 /* Set the sizes of the dynamic sections. */
2687 ppc64_elf_size_dynamic_sections (output_bfd, info)
2688 bfd *output_bfd ATTRIBUTE_UNUSED;
2689 struct bfd_link_info *info;
2691 struct ppc_link_hash_table *htab;
2697 htab = ppc_hash_table (info);
2698 dynobj = htab->elf.dynobj;
2702 if (htab->elf.dynamic_sections_created)
2704 /* Set the contents of the .interp section to the interpreter. */
2707 s = bfd_get_section_by_name (dynobj, ".interp");
2710 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2711 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2715 /* Set up .got offsets for local syms, and space for local dynamic
2717 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2719 bfd_signed_vma *local_got;
2720 bfd_signed_vma *end_local_got;
2721 bfd_size_type locsymcount;
2722 Elf_Internal_Shdr *symtab_hdr;
2725 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2728 for (s = ibfd->sections; s != NULL; s = s->next)
2730 bfd_size_type count = elf_section_data (s)->local_dynrel;
2734 srel = elf_section_data (s)->sreloc;
2735 srel->_raw_size += count * sizeof (Elf64_External_Rela);
2739 local_got = elf_local_got_refcounts (ibfd);
2743 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2744 locsymcount = symtab_hdr->sh_info;
2745 end_local_got = local_got + locsymcount;
2747 srel = htab->srelgot;
2748 for (; local_got < end_local_got; ++local_got)
2752 *local_got = s->_raw_size;
2755 srel->_raw_size += sizeof (Elf64_External_Rela);
2758 *local_got = (bfd_vma) -1;
2762 /* Allocate global sym .plt and .got entries, and space for global
2763 sym dynamic relocs. */
2764 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2766 /* We now have determined the sizes of the various dynamic sections.
2767 Allocate memory for them. */
2769 for (s = dynobj->sections; s != NULL; s = s->next)
2771 if ((s->flags & SEC_LINKER_CREATED) == 0)
2776 || s == htab->sglink)
2778 /* Strip this section if we don't need it; see the
2781 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2783 if (s->_raw_size == 0)
2785 /* If we don't need this section, strip it from the
2786 output file. This is mostly to handle .rela.bss and
2787 .rela.plt. We must create both sections in
2788 create_dynamic_sections, because they must be created
2789 before the linker maps input sections to output
2790 sections. The linker does that before
2791 adjust_dynamic_symbol is called, and it is that
2792 function which decides whether anything needs to go
2793 into these sections. */
2797 if (s != htab->srelplt)
2800 /* We use the reloc_count field as a counter if we need
2801 to copy relocs into the output file. */
2807 /* It's not one of our sections, so don't allocate space. */
2811 if (s->_raw_size == 0)
2813 _bfd_strip_section_from_output (info, s);
2817 /* Allocate memory for the section contents. We use bfd_zalloc
2818 here in case unused entries are not reclaimed before the
2819 section's contents are written out. This should not happen,
2820 but this way if it does, we get a R_PPC64_NONE reloc instead
2822 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2823 if (s->contents == NULL)
2827 if (elf_hash_table (info)->dynamic_sections_created)
2829 /* Add some entries to the .dynamic section. We fill in the
2830 values later, in ppc64_elf_finish_dynamic_sections, but we
2831 must add the entries now so that we get the correct size for
2832 the .dynamic section. The DT_DEBUG entry is filled in by the
2833 dynamic linker and used by the debugger. */
2834 #define add_dynamic_entry(TAG, VAL) \
2835 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2839 if (!add_dynamic_entry (DT_DEBUG, 0))
2843 if (htab->splt->_raw_size != 0)
2845 if (!add_dynamic_entry (DT_PLTGOT, 0)
2846 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2847 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2848 || !add_dynamic_entry (DT_JMPREL, 0))
2854 if (!add_dynamic_entry (DT_RELA, 0)
2855 || !add_dynamic_entry (DT_RELASZ, 0)
2856 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2859 /* If any dynamic relocs apply to a read-only section,
2860 then we need a DT_TEXTREL entry. */
2861 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
2863 if ((info->flags & DF_TEXTREL) != 0)
2865 if (!add_dynamic_entry (DT_TEXTREL, 0))
2870 #undef add_dynamic_entry
2875 /* Called after we have seen all the input files/sections, but before
2876 final symbol resolution and section placement has been determined.
2878 We use this hook to provide a value for TOCstart, which we store in
2879 the output bfd elf_gp, then we call the generic ELF final link
2883 ppc64_elf_final_link (abfd, info)
2885 struct bfd_link_info *info;
2887 if (! info->relocateable)
2892 /* The TOC consists of sections .got, .toc, .tocbss, .plt in this
2893 order. The TOC starts where the first of these sections starts. */
2894 s = bfd_get_section_by_name (abfd, ".got");
2896 s = bfd_get_section_by_name (abfd, ".toc");
2898 s = bfd_get_section_by_name (abfd, ".tocbss");
2900 s = bfd_get_section_by_name (abfd, ".plt");
2903 /* This may happen for
2904 o references to TOC base (SYM@toc / TOC[tc0]) without a
2907 o --gc-sections and empty TOC sections
2909 FIXME: Warn user? */
2911 /* Look for a likely section. We probably won't even be
2913 for (s = abfd->sections; s != NULL; s = s->next)
2914 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
2915 == (SEC_ALLOC | SEC_SMALL_DATA))
2918 for (s = abfd->sections; s != NULL; s = s->next)
2919 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
2920 == (SEC_ALLOC | SEC_SMALL_DATA))
2923 for (s = abfd->sections; s != NULL; s = s->next)
2924 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
2927 for (s = abfd->sections; s != NULL; s = s->next)
2928 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
2934 TOCstart = s->output_section->vma + s->output_offset;
2936 elf_gp (abfd) = TOCstart;
2939 /* Invoke the regular ELF backend linker to do all the work. */
2940 return bfd_elf64_bfd_final_link (abfd, info);
2943 /* Set up any other section flags and such that may be necessary. */
2946 ppc64_elf_fake_sections (abfd, shdr, asect)
2947 bfd *abfd ATTRIBUTE_UNUSED;
2948 Elf64_Internal_Shdr *shdr;
2951 if ((asect->flags & SEC_EXCLUDE) != 0)
2952 shdr->sh_flags |= SHF_EXCLUDE;
2954 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2955 shdr->sh_type = SHT_ORDERED;
2960 /* The RELOCATE_SECTION function is called by the ELF backend linker
2961 to handle the relocations for a section.
2963 The relocs are always passed as Rela structures; if the section
2964 actually uses Rel structures, the r_addend field will always be
2967 This function is responsible for adjust the section contents as
2968 necessary, and (if using Rela relocs and generating a
2969 relocateable output file) adjusting the reloc addend as
2972 This function does not have to worry about setting the reloc
2973 address or the reloc symbol index.
2975 LOCAL_SYMS is a pointer to the swapped in local symbols.
2977 LOCAL_SECTIONS is an array giving the section in the input file
2978 corresponding to the st_shndx field of each local symbol.
2980 The global hash table entry for the global symbols can be found
2981 via elf_sym_hashes (input_bfd).
2983 When generating relocateable output, this function must handle
2984 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2985 going to be the section symbol corresponding to the output
2986 section, which means that the addend must be adjusted
2990 ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
2991 contents, relocs, local_syms, local_sections)
2993 struct bfd_link_info *info;
2995 asection *input_section;
2997 Elf_Internal_Rela *relocs;
2998 Elf_Internal_Sym *local_syms;
2999 asection **local_sections;
3001 struct ppc_link_hash_table *htab;
3002 Elf_Internal_Shdr *symtab_hdr;
3003 struct elf_link_hash_entry **sym_hashes;
3004 Elf_Internal_Rela *rel;
3005 Elf_Internal_Rela *relend;
3006 bfd_vma *local_got_offsets;
3010 /* Initialize howto table if needed. */
3011 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
3014 htab = ppc_hash_table (info);
3015 local_got_offsets = elf_local_got_offsets (input_bfd);
3016 TOCstart = elf_gp (output_bfd);
3017 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3018 sym_hashes = elf_sym_hashes (input_bfd);
3021 relend = relocs + input_section->reloc_count;
3022 for (; rel < relend; rel++)
3024 enum elf_ppc_reloc_type r_type;
3027 bfd_reloc_status_type r;
3028 Elf_Internal_Sym *sym;
3030 struct elf_link_hash_entry *h;
3031 const char *sym_name;
3032 unsigned long r_symndx;
3034 boolean unresolved_reloc;
3037 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3038 r_symndx = ELF64_R_SYM (rel->r_info);
3040 if (info->relocateable)
3042 /* This is a relocatable link. We don't have to change
3043 anything, unless the reloc is against a section symbol,
3044 in which case we have to adjust according to where the
3045 section symbol winds up in the output section. */
3046 if (r_symndx < symtab_hdr->sh_info)
3048 sym = local_syms + r_symndx;
3049 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3051 sec = local_sections[r_symndx];
3052 rel->r_addend += sec->output_offset + sym->st_value;
3058 /* This is a final link. */
3060 offset = rel->r_offset;
3061 addend = rel->r_addend;
3062 r = bfd_reloc_other;
3063 sym = (Elf_Internal_Sym *) 0;
3064 sec = (asection *) 0;
3065 h = (struct elf_link_hash_entry *) 0;
3066 sym_name = (const char *) 0;
3067 unresolved_reloc = false;
3069 if (r_type == R_PPC64_TOC)
3071 /* Relocation value is TOC base. Symbol is ignored. */
3072 relocation = TOCstart + TOC_BASE_OFF;
3074 else if (r_symndx < symtab_hdr->sh_info)
3076 /* It's a local symbol. */
3077 sym = local_syms + r_symndx;
3078 sec = local_sections[r_symndx];
3079 sym_name = "<local symbol>";
3081 relocation = (sec->output_section->vma
3082 + sec->output_offset
3087 /* It's a global symbol. */
3088 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3089 while (h->root.type == bfd_link_hash_indirect
3090 || h->root.type == bfd_link_hash_warning)
3091 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3092 sym_name = h->root.root.string;
3094 if (h->root.type == bfd_link_hash_defined
3095 || h->root.type == bfd_link_hash_defweak)
3097 sec = h->root.u.def.section;
3098 if (sec->output_section == NULL)
3099 /* Set a flag that will be cleared later if we find a
3100 relocation value for this symbol. output_section
3101 is typically NULL for symbols satisfied by a shared
3103 unresolved_reloc = true;
3105 relocation = (h->root.u.def.value
3106 + sec->output_section->vma
3107 + sec->output_offset);
3109 else if (h->root.type == bfd_link_hash_undefweak)
3111 else if (info->shared
3112 && (!info->symbolic || info->allow_shlib_undefined)
3113 && !info->no_undefined
3114 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3118 if (! ((*info->callbacks->undefined_symbol)
3119 (info, h->root.root.string, input_bfd, input_section,
3120 offset, (!info->shared
3121 || info->no_undefined
3122 || ELF_ST_VISIBILITY (h->other)))))
3128 /* First handle relocations that tweak non-addend part of insn. */
3134 /* Branch taken prediction relocations. */
3135 case R_PPC64_ADDR14_BRTAKEN:
3136 case R_PPC64_REL14_BRTAKEN:
3137 insn = bfd_get_32 (output_bfd, contents + offset);
3138 if ((relocation - offset) & 0x8000)
3139 insn &= ~BRANCH_PREDICT_BIT;
3141 insn |= BRANCH_PREDICT_BIT;
3142 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3145 /* Branch not taken predicition relocations. */
3146 case R_PPC64_ADDR14_BRNTAKEN:
3147 case R_PPC64_REL14_BRNTAKEN:
3148 insn = bfd_get_32 (output_bfd, contents + offset);
3149 if ((relocation - offset) & 0x8000)
3150 insn |= BRANCH_PREDICT_BIT;
3152 insn &= ~BRANCH_PREDICT_BIT;
3153 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3157 case R_PPC64_ADDR24:
3158 /* An ADDR24 or REL24 branching to a linkage function may be
3159 followed by a nop that we have to replace with a ld in
3160 order to restore the TOC base pointer. Only calls to
3161 shared objects need to alter the TOC base. These are
3162 recognized by their need for a PLT entry. */
3164 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
3165 /* Make sure that there really is an instruction after
3166 the branch that we can decode. */
3167 && offset + 8 <= input_section->_cooked_size)
3171 pnext = contents + offset + 4;
3172 insn = bfd_get_32 (input_bfd, pnext);
3174 if (insn == 0x60000000 /* nop (ori r0,r0,0) */
3175 || insn == 0x4def7b82 /* cror 15,15,15 */
3176 || insn == 0x4ffffb82) /* cror 31,31,31 */
3178 bfd_put_32 (input_bfd,
3179 (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
3190 (*_bfd_error_handler)
3191 (_("%s: unknown relocation type %d for symbol %s"),
3192 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
3194 bfd_set_error (bfd_error_bad_value);
3199 case R_PPC_GNU_VTINHERIT:
3200 case R_PPC_GNU_VTENTRY:
3203 /* GOT16 relocations. Like an ADDR16 using the symbol's
3204 address in the GOT as relocation value instead of the
3205 symbols value itself. Also, create a GOT entry for the
3206 symbol and put the symbol value there. */
3208 case R_PPC64_GOT16_LO:
3209 case R_PPC64_GOT16_HI:
3210 case R_PPC64_GOT16_HA:
3211 case R_PPC64_GOT16_DS:
3212 case R_PPC64_GOT16_LO_DS:
3214 /* Relocation is to the entry for this symbol in the global
3218 if (htab->sgot == NULL)
3225 off = h->got.offset;
3226 dyn = htab->elf.dynamic_sections_created;
3227 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
3231 || (h->elf_link_hash_flags
3232 & ELF_LINK_FORCED_LOCAL))
3233 && (h->elf_link_hash_flags
3234 & ELF_LINK_HASH_DEF_REGULAR)))
3236 /* This is actually a static link, or it is a
3237 -Bsymbolic link and the symbol is defined
3238 locally, or the symbol was forced to be local
3239 because of a version file. We must initialize
3240 this entry in the global offset table. Since the
3241 offset must always be a multiple of 8, we use the
3242 least significant bit to record whether we have
3243 initialized it already.
3245 When doing a dynamic link, we create a .rel.got
3246 relocation entry to initialize the value. This
3247 is done in the finish_dynamic_symbol routine. */
3252 bfd_put_64 (output_bfd, relocation,
3253 htab->sgot->contents + off);
3258 unresolved_reloc = false;
3262 if (local_got_offsets == NULL)
3265 off = local_got_offsets[r_symndx];
3267 /* The offset must always be a multiple of 8. We use
3268 the least significant bit to record whether we have
3269 already processed this entry. */
3274 bfd_put_64 (output_bfd, relocation,
3275 htab->sgot->contents + off);
3279 Elf_Internal_Rela outrel;
3280 Elf64_External_Rela *loc;
3282 /* We need to generate a R_PPC64_RELATIVE reloc
3283 for the dynamic linker. */
3284 outrel.r_offset = (htab->sgot->output_section->vma
3285 + htab->sgot->output_offset
3287 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3288 outrel.r_addend = relocation;
3289 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3290 loc += htab->srelgot->reloc_count++;
3291 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3294 local_got_offsets[r_symndx] |= 1;
3298 if (off >= (bfd_vma) -2)
3301 relocation = htab->sgot->output_offset + off;
3303 /* TOC base (r2) is TOC start plus 0x8000. */
3304 addend -= TOC_BASE_OFF;
3308 case R_PPC64_PLT16_HA:
3309 case R_PPC64_PLT16_HI:
3310 case R_PPC64_PLT16_LO:
3313 /* Relocation is to the entry for this symbol in the
3314 procedure linkage table. */
3316 /* Resolve a PLT reloc against a local symbol directly,
3317 without using the procedure linkage table. */
3321 if (h->plt.offset == (bfd_vma) -1
3322 || htab->splt == NULL)
3324 /* We didn't make a PLT entry for this symbol. This
3325 happens when statically linking PIC code, or when
3326 using -Bsymbolic. */
3330 relocation = (htab->splt->output_section->vma
3331 + htab->splt->output_offset
3333 unresolved_reloc = false;
3336 /* TOC16 relocs. We want the offset relative to the TOC base,
3337 which is the address of the start of the TOC plus 0x8000.
3338 The TOC consists of sections .got, .toc, .tocbss, and .plt,
3342 case R_PPC64_TOC16_LO:
3343 case R_PPC64_TOC16_HI:
3344 case R_PPC64_TOC16_DS:
3345 case R_PPC64_TOC16_LO_DS:
3346 case R_PPC64_TOC16_HA:
3347 /* Only .got, .toc and *UND* symbols are allowed. */
3348 BFD_ASSERT (sec != (asection *) 0
3349 && (bfd_is_und_section (sec)
3350 || strcmp (bfd_get_section_name (abfd, sec),
3352 || strcmp (bfd_get_section_name (abfd, sec),
3355 addend -= TOCstart + TOC_BASE_OFF;
3358 /* Relocate against the beginning of the section. */
3359 case R_PPC64_SECTOFF:
3360 case R_PPC64_SECTOFF_LO:
3361 case R_PPC64_SECTOFF_HI:
3362 case R_PPC64_SECTOFF_DS:
3363 case R_PPC64_SECTOFF_LO_DS:
3364 case R_PPC64_SECTOFF_HA:
3365 if (sec != (asection *) 0)
3366 addend -= sec->output_section->vma;
3369 /* Relocations that may need to be propagated if this is a
3372 case R_PPC64_REL14_BRNTAKEN:
3373 case R_PPC64_REL14_BRTAKEN:
3377 case R_PPC64_ADDR14:
3378 case R_PPC64_ADDR14_BRNTAKEN:
3379 case R_PPC64_ADDR14_BRTAKEN:
3380 case R_PPC64_ADDR16:
3381 case R_PPC64_ADDR16_DS:
3382 case R_PPC64_ADDR16_HA:
3383 case R_PPC64_ADDR16_HI:
3384 case R_PPC64_ADDR16_HIGHER:
3385 case R_PPC64_ADDR16_HIGHERA:
3386 case R_PPC64_ADDR16_HIGHEST:
3387 case R_PPC64_ADDR16_HIGHESTA:
3388 case R_PPC64_ADDR16_LO:
3389 case R_PPC64_ADDR16_LO_DS:
3390 case R_PPC64_ADDR24:
3391 case R_PPC64_ADDR30:
3392 case R_PPC64_ADDR32:
3393 case R_PPC64_ADDR64:
3394 case R_PPC64_UADDR16:
3395 case R_PPC64_UADDR32:
3396 case R_PPC64_UADDR64:
3399 && (input_section->flags & SEC_ALLOC) != 0
3400 && (IS_ABSOLUTE_RELOC (r_type)
3403 && (! info->symbolic
3404 || (h->elf_link_hash_flags
3405 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3407 && (input_section->flags & SEC_ALLOC) != 0
3410 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3411 && (((h->elf_link_hash_flags
3412 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3413 && (h->elf_link_hash_flags
3414 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3415 || h->root.type == bfd_link_hash_undefweak
3416 || h->root.type == bfd_link_hash_undefined)))
3418 Elf_Internal_Rela outrel;
3419 boolean skip, relocate;
3421 Elf64_External_Rela *loc;
3423 /* When generating a dynamic object, these relocations
3424 are copied into the output file to be resolved at run
3429 if (elf_section_data (input_section)->stab_info == NULL)
3430 outrel.r_offset = offset;
3435 off = (_bfd_stab_section_offset
3436 (output_bfd, htab->elf.stab_info, input_section,
3437 &elf_section_data (input_section)->stab_info,
3439 if (off == (bfd_vma) -1)
3441 outrel.r_offset = off;
3444 outrel.r_offset += (input_section->output_section->vma
3445 + input_section->output_offset);
3446 outrel.r_addend = addend;
3451 memset (&outrel, 0, sizeof outrel);
3455 && (!IS_ABSOLUTE_RELOC (r_type)
3458 || (h->elf_link_hash_flags
3459 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3462 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
3466 /* This symbol is local, or marked to become local. */
3467 outrel.r_addend += relocation;
3469 if (r_type == R_PPC64_ADDR64)
3471 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3477 if (r_type == R_PPC64_TOC || bfd_is_abs_section (sec))
3479 else if (sec == NULL || sec->owner == NULL)
3481 bfd_set_error (bfd_error_bad_value);
3488 osec = sec->output_section;
3489 indx = elf_section_data (osec)->dynindx;
3491 /* We are turning this relocation into one
3492 against a section symbol, so subtract out
3493 the output section's address but not the
3494 offset of the input section in the output
3496 outrel.r_addend -= osec->vma;
3499 outrel.r_info = ELF64_R_INFO (indx, r_type);
3503 sreloc = elf_section_data (input_section)->sreloc;
3507 loc = (Elf64_External_Rela *) sreloc->contents;
3508 loc += sreloc->reloc_count++;
3509 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3511 /* If this reloc is against an external symbol, it will
3512 be computed at runtime, so there's no need to do
3520 case R_PPC64_GLOB_DAT:
3521 case R_PPC64_JMP_SLOT:
3522 case R_PPC64_RELATIVE:
3523 /* We shouldn't ever see these dynamic relocs in relocatable
3527 case R_PPC64_PLTGOT16:
3528 case R_PPC64_PLTGOT16_DS:
3529 case R_PPC64_PLTGOT16_HA:
3530 case R_PPC64_PLTGOT16_HI:
3531 case R_PPC64_PLTGOT16_LO:
3532 case R_PPC64_PLTGOT16_LO_DS:
3533 case R_PPC64_PLTREL32:
3534 case R_PPC64_PLTREL64:
3535 /* These ones haven't been implemented yet. */
3537 (*_bfd_error_handler)
3538 (_("%s: Relocation %s is not supported for symbol %s."),
3539 bfd_archive_filename (input_bfd),
3540 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
3542 bfd_set_error (bfd_error_invalid_operation);
3547 /* Do any further special processing. */
3553 case R_PPC64_ADDR16_HA:
3554 case R_PPC64_ADDR16_HIGHERA:
3555 case R_PPC64_ADDR16_HIGHESTA:
3556 case R_PPC64_PLT16_HA:
3557 case R_PPC64_TOC16_HA:
3558 case R_PPC64_SECTOFF_HA:
3559 /* It's just possible that this symbol is a weak symbol
3560 that's not actually defined anywhere. In that case,
3561 'sec' would be NULL, and we should leave the symbol
3562 alone (it will be set to zero elsewhere in the link). */
3564 /* Add 0x10000 if sign bit in 0:15 is set. */
3565 addend += ((relocation + addend) & 0x8000) << 1;
3568 case R_PPC64_ADDR16_DS:
3569 case R_PPC64_ADDR16_LO_DS:
3570 case R_PPC64_GOT16_DS:
3571 case R_PPC64_GOT16_LO_DS:
3572 case R_PPC64_PLT16_LO_DS:
3573 case R_PPC64_SECTOFF_DS:
3574 case R_PPC64_SECTOFF_LO_DS:
3575 case R_PPC64_TOC16_DS:
3576 case R_PPC64_TOC16_LO_DS:
3577 case R_PPC64_PLTGOT16_DS:
3578 case R_PPC64_PLTGOT16_LO_DS:
3579 if (((relocation + addend) & 3) != 0)
3581 (*_bfd_error_handler)
3582 (_("%s: error: relocation %s not a multiple of 4"),
3583 bfd_archive_filename (input_bfd),
3584 ppc64_elf_howto_table[(int) r_type]->name);
3585 bfd_set_error (bfd_error_bad_value);
3592 /* FIXME: Why do we allow debugging sections to escape this error?
3593 More importantly, why do we not emit dynamic relocs above in
3594 debugging sections (which are ! SEC_ALLOC)? If we had
3595 emitted the dynamic reloc, we could remove the fudge here. */
3596 if (unresolved_reloc
3598 && (input_section->flags & SEC_DEBUGGING) != 0
3599 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3600 (*_bfd_error_handler)
3601 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3602 bfd_archive_filename (input_bfd),
3603 bfd_get_section_name (input_bfd, input_section),
3604 (long) rel->r_offset,
3605 h->root.root.string);
3607 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
3615 if (r == bfd_reloc_ok)
3617 else if (r == bfd_reloc_overflow)
3623 if (h->root.type == bfd_link_hash_undefweak
3624 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
3626 /* Assume this is a call protected by other code that
3627 detects the symbol is undefined. If this is the case,
3628 we can safely ignore the overflow. If not, the
3629 program is hosed anyway, and a little warning isn't
3635 name = h->root.root.string;
3639 name = bfd_elf_string_from_elf_section (input_bfd,
3640 symtab_hdr->sh_link,
3645 name = bfd_section_name (input_bfd, sec);
3648 if (! ((*info->callbacks->reloc_overflow)
3649 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
3650 (bfd_vma) 0, input_bfd, input_section, offset)))
3660 /* Finish up dynamic symbol handling. We set the contents of various
3661 dynamic sections here. */
3664 ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
3666 struct bfd_link_info *info;
3667 struct elf_link_hash_entry *h;
3668 Elf_Internal_Sym *sym;
3670 struct ppc_link_hash_table *htab;
3673 htab = ppc_hash_table (info);
3674 dynobj = htab->elf.dynobj;
3676 if (h->plt.offset != (bfd_vma) -1)
3678 struct elf_link_hash_entry *funcdesc_h;
3679 Elf_Internal_Rela rela;
3680 Elf64_External_Rela *loc;
3682 /* This symbol has an entry in the procedure linkage table. Set
3685 if (h->dynindx == -1
3686 || htab->splt == NULL
3687 || htab->srelplt == NULL
3688 || htab->sglink == NULL
3689 || h->root.root.string[0] != '.'
3690 || h->root.root.string[1] == '\0')
3693 /* Find its corresponding function descriptor.
3694 ppc64_elf_adjust_dynamic_symbol has already set it up for us. */
3696 funcdesc_h = elf_link_hash_lookup (elf_hash_table (info),
3697 h->root.root.string + 1,
3698 false, false, false);
3700 if (funcdesc_h == NULL || funcdesc_h->dynindx == -1)
3703 /* Create a JMP_SLOT reloc to inform the dynamic linker to
3704 fill in the PLT entry. */
3706 rela.r_offset = (htab->splt->output_section->vma
3707 + htab->splt->output_offset
3709 rela.r_info = ELF64_R_INFO (funcdesc_h->dynindx, R_PPC64_JMP_SLOT);
3712 loc = (Elf64_External_Rela *) htab->srelplt->contents;
3713 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3714 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3716 /* We need to create a linkage function. */
3717 if (h->root.u.def.section == htab->sglink)
3721 const unsigned int *stub;
3723 /* Where to write it. */
3724 p = h->root.u.def.section->contents + h->root.u.def.value;
3726 /* The function descriptor is in the PLT. */
3727 pltoff = htab->splt->output_section->vma
3728 + htab->splt->output_section->output_offset
3730 - elf_gp (output_bfd) - TOC_BASE_OFF;
3732 if (pltoff + 0x8000 > 0xffff)
3734 (*_bfd_error_handler)
3735 (_("linkage table overflow against `%s'"),
3736 h->root.root.string);
3740 stub = ppc64_elf_glink_code;
3741 bfd_put_32 (output_bfd, *stub | (pltoff & 0xfffc), p);
3742 while (p += 4, ++stub < (ppc64_elf_glink_code
3743 + (sizeof (ppc64_elf_glink_code)
3744 / sizeof (*ppc64_elf_glink_code))));
3746 bfd_put_32 (output_bfd, (bfd_vma) *stub, p);
3753 if (h->got.offset != (bfd_vma) -1)
3755 Elf_Internal_Rela rela;
3756 Elf64_External_Rela *loc;
3758 /* This symbol has an entry in the global offset table. Set it
3761 if (htab->sgot == NULL || htab->srelgot == NULL)
3764 rela.r_offset = (htab->sgot->output_section->vma
3765 + htab->sgot->output_offset
3766 + (h->got.offset &~ (bfd_vma) 1));
3768 /* If this is a static link, or it is a -Bsymbolic link and the
3769 symbol is defined locally or was forced to be local because
3770 of a version file, we just want to emit a RELATIVE reloc.
3771 The entry in the global offset table will already have been
3772 initialized in the relocate_section function. */
3776 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
3777 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3779 BFD_ASSERT((h->got.offset & 1) != 0);
3780 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3781 rela.r_addend = (h->root.u.def.value
3782 + h->root.u.def.section->output_section->vma
3783 + h->root.u.def.section->output_offset);
3787 BFD_ASSERT ((h->got.offset & 1) == 0);
3788 bfd_put_64 (output_bfd, (bfd_vma) 0,
3789 htab->sgot->contents + h->got.offset);
3790 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
3794 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3795 loc += htab->srelgot->reloc_count++;
3796 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3799 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3801 Elf_Internal_Rela rela;
3802 Elf64_External_Rela *loc;
3804 /* This symbol needs a copy reloc. Set it up. */
3806 if (h->dynindx == -1
3807 || (h->root.type != bfd_link_hash_defined
3808 && h->root.type != bfd_link_hash_defweak)
3809 || htab->srelbss == NULL)
3812 rela.r_offset = (h->root.u.def.value
3813 + h->root.u.def.section->output_section->vma
3814 + h->root.u.def.section->output_offset);
3815 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
3817 loc = (Elf64_External_Rela *) htab->srelbss->contents;
3818 loc += htab->srelbss->reloc_count++;
3819 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
3822 /* Mark some specially defined symbols as absolute. */
3823 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
3824 sym->st_shndx = SHN_ABS;
3829 /* Used to decide how to sort relocs in an optimal manner for the
3830 dynamic linker, before writing them out. */
3832 static enum elf_reloc_type_class
3833 ppc64_elf_reloc_type_class (rela)
3834 const Elf_Internal_Rela *rela;
3836 switch ((int) ELF64_R_TYPE (rela->r_info))
3838 case R_PPC64_RELATIVE:
3839 return reloc_class_relative;
3840 case R_PPC64_JMP_SLOT:
3841 return reloc_class_plt;
3843 return reloc_class_copy;
3845 return reloc_class_normal;
3849 /* Finish up the dynamic sections. */
3852 ppc64_elf_finish_dynamic_sections (output_bfd, info)
3854 struct bfd_link_info *info;
3856 struct ppc_link_hash_table *htab;
3860 htab = ppc_hash_table (info);
3861 dynobj = htab->elf.dynobj;
3862 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3864 if (htab->elf.dynamic_sections_created)
3866 Elf64_External_Dyn *dyncon, *dynconend;
3868 if (sdyn == NULL || htab->sgot == NULL)
3871 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3872 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3873 for (; dyncon < dynconend; dyncon++)
3875 Elf_Internal_Dyn dyn;
3877 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3885 dyn.d_un.d_ptr = htab->splt->output_section->vma;
3889 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3893 if (htab->srelplt->output_section->_cooked_size != 0)
3894 dyn.d_un.d_val = htab->srelplt->output_section->_cooked_size;
3896 dyn.d_un.d_val = htab->srelplt->output_section->_raw_size;
3900 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
3907 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
3908 #define TARGET_LITTLE_NAME "elf64-powerpcle"
3909 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
3910 #define TARGET_BIG_NAME "elf64-powerpc"
3911 #define ELF_ARCH bfd_arch_powerpc
3912 #define ELF_MACHINE_CODE EM_PPC64
3913 #define ELF_MAXPAGESIZE 0x10000
3914 #define elf_info_to_howto ppc64_elf_info_to_howto
3916 #ifdef EM_CYGNUS_POWERPC
3917 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3921 #define ELF_MACHINE_ALT2 EM_PPC_OLD
3924 #define elf_backend_want_got_sym 0
3925 #define elf_backend_want_plt_sym 0
3926 #define elf_backend_plt_alignment 3
3927 #define elf_backend_plt_not_loaded 1
3928 #define elf_backend_got_symbol_offset 0
3929 #define elf_backend_got_header_size 0
3930 #define elf_backend_can_gc_sections 1
3931 #define elf_backend_can_refcount 1
3933 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
3935 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
3936 #define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
3937 #define bfd_elf64_bfd_copy_private_bfd_data ppc64_elf_copy_private_bfd_data
3938 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
3939 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
3940 #define bfd_elf64_bfd_final_link ppc64_elf_final_link
3942 #define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
3943 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
3944 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
3945 #define elf_backend_check_relocs ppc64_elf_check_relocs
3946 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
3947 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
3948 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
3949 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
3950 #define elf_backend_fake_sections ppc64_elf_fake_sections
3951 #define elf_backend_relocate_section ppc64_elf_relocate_section
3952 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
3953 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
3954 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
3956 #include "elf64-target.h"
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