1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002 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. */
31 #include "elf64-ppc.h"
33 #define USE_RELA /* we want RELA relocations, not REL. */
36 static void ppc_howto_init
38 static reloc_howto_type *ppc64_elf_reloc_type_lookup
39 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
40 static void ppc64_elf_info_to_howto
41 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
42 static bfd_reloc_status_type ppc64_elf_addr16_ha_reloc
43 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
44 static boolean ppc64_elf_set_private_flags
45 PARAMS ((bfd *, flagword));
46 static boolean ppc64_elf_merge_private_bfd_data
47 PARAMS ((bfd *, bfd *));
48 static boolean ppc64_elf_section_from_shdr
49 PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
50 static struct bfd_hash_entry *link_hash_newfunc
51 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
52 static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
54 static boolean create_got_section
55 PARAMS ((bfd *, struct bfd_link_info *));
56 static boolean ppc64_elf_create_dynamic_sections
57 PARAMS ((bfd *, struct bfd_link_info *));
58 static void ppc64_elf_copy_indirect_symbol
59 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
60 static boolean ppc64_elf_check_relocs
61 PARAMS ((bfd *, struct bfd_link_info *, asection *,
62 const Elf_Internal_Rela *));
63 static asection * ppc64_elf_gc_mark_hook
64 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
65 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
66 static boolean ppc64_elf_gc_sweep_hook
67 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
68 const Elf_Internal_Rela *relocs));
69 static boolean ppc64_elf_adjust_dynamic_symbol
70 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
71 static boolean allocate_dynrelocs
72 PARAMS ((struct elf_link_hash_entry *, PTR));
73 static boolean readonly_dynrelocs
74 PARAMS ((struct elf_link_hash_entry *, PTR));
75 static enum elf_reloc_type_class ppc64_elf_reloc_type_class
76 PARAMS ((const Elf_Internal_Rela *));
77 static boolean ppc64_elf_size_dynamic_sections
78 PARAMS ((bfd *, struct bfd_link_info *));
79 static bfd_byte *build_plt_stub
80 PARAMS ((bfd *, bfd_byte *, int, int));
81 static boolean build_one_stub
82 PARAMS ((struct elf_link_hash_entry *, PTR));
83 static boolean ppc64_elf_fake_sections
84 PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
85 static boolean ppc64_elf_relocate_section
86 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
87 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
89 static boolean ppc64_elf_finish_dynamic_symbol
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
92 static boolean ppc64_elf_finish_dynamic_sections
93 PARAMS ((bfd *, struct bfd_link_info *));
96 /* Mask to set RA in memory instructions. */
97 #define RA_REGISTER_MASK 0x001f0000
99 /* Value to shift register by to insert RA. */
100 #define RA_REGISTER_SHIFT 16
102 /* The name of the dynamic interpreter. This is put in the .interp
104 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
106 /* The size in bytes of an entry in the procedure linkage table. */
107 #define PLT_ENTRY_SIZE 24
109 /* The initial size of the plt reserved for the dynamic linker. */
110 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
112 /* TOC base pointers offset from start of TOC. */
113 #define TOC_BASE_OFF (0x8000)
115 /* .plt call stub instructions. */
116 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
117 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
118 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
119 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
120 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
121 /* ld %r11,xxx+16@l(%r12) */
122 #define BCTR 0x4e800420 /* bctr */
124 /* The normal stub is this size. */
125 #define PLT_CALL_STUB_SIZE (7*4)
127 /* But sometimes the .plt entry crosses a 64k boundary, and we need
128 to adjust the high word with this insn. */
129 #define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
131 /* The .glink fixup call stub is the same as the .plt call stub, but
132 the first instruction restores r2, and the std is omitted. */
133 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
135 /* Always allow this much space. */
136 #define GLINK_CALL_STUB_SIZE (8*4)
139 #define NOP 0x60000000
141 /* .glink entries for the first 32k functions are two instructions. */
142 #define LI_R0_0 0x38000000 /* li %r0,0 */
143 #define B_DOT 0x48000000 /* b . */
145 /* After that, we need two instructions to load the index, followed by
147 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
148 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
150 /* Relocation HOWTO's. */
151 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
153 static reloc_howto_type ppc64_elf_howto_raw[] = {
154 /* This reloc does nothing. */
155 HOWTO (R_PPC64_NONE, /* type */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
159 false, /* pc_relative */
161 complain_overflow_bitfield, /* complain_on_overflow */
162 bfd_elf_generic_reloc, /* special_function */
163 "R_PPC64_NONE", /* name */
164 false, /* partial_inplace */
167 false), /* pcrel_offset */
169 /* A standard 32 bit relocation. */
170 HOWTO (R_PPC64_ADDR32, /* type */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
174 false, /* pc_relative */
176 complain_overflow_bitfield, /* complain_on_overflow */
177 bfd_elf_generic_reloc, /* special_function */
178 "R_PPC64_ADDR32", /* name */
179 false, /* partial_inplace */
181 0xffffffff, /* dst_mask */
182 false), /* pcrel_offset */
184 /* An absolute 26 bit branch; the lower two bits must be zero.
185 FIXME: we don't check that, we just clear them. */
186 HOWTO (R_PPC64_ADDR24, /* type */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
190 false, /* pc_relative */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC64_ADDR24", /* name */
195 false, /* partial_inplace */
197 0x3fffffc, /* dst_mask */
198 false), /* pcrel_offset */
200 /* A standard 16 bit relocation. */
201 HOWTO (R_PPC64_ADDR16, /* type */
203 1, /* size (0 = byte, 1 = short, 2 = long) */
205 false, /* pc_relative */
207 complain_overflow_bitfield, /* complain_on_overflow */
208 bfd_elf_generic_reloc, /* special_function */
209 "R_PPC64_ADDR16", /* name */
210 false, /* partial_inplace */
212 0xffff, /* dst_mask */
213 false), /* pcrel_offset */
215 /* A 16 bit relocation without overflow. */
216 HOWTO (R_PPC64_ADDR16_LO, /* type */
218 1, /* size (0 = byte, 1 = short, 2 = long) */
220 false, /* pc_relative */
222 complain_overflow_dont,/* complain_on_overflow */
223 bfd_elf_generic_reloc, /* special_function */
224 "R_PPC64_ADDR16_LO", /* name */
225 false, /* partial_inplace */
227 0xffff, /* dst_mask */
228 false), /* pcrel_offset */
230 /* Bits 16-31 of an address. */
231 HOWTO (R_PPC64_ADDR16_HI, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 false, /* pc_relative */
237 complain_overflow_dont, /* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_PPC64_ADDR16_HI", /* name */
240 false, /* partial_inplace */
242 0xffff, /* dst_mask */
243 false), /* pcrel_offset */
245 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
246 bits, treated as a signed number, is negative. */
247 HOWTO (R_PPC64_ADDR16_HA, /* type */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
251 false, /* pc_relative */
253 complain_overflow_dont, /* complain_on_overflow */
254 ppc64_elf_addr16_ha_reloc, /* special_function */
255 "R_PPC64_ADDR16_HA", /* name */
256 false, /* partial_inplace */
258 0xffff, /* dst_mask */
259 false), /* pcrel_offset */
261 /* An absolute 16 bit branch; the lower two bits must be zero.
262 FIXME: we don't check that, we just clear them. */
263 HOWTO (R_PPC64_ADDR14, /* type */
265 2, /* size (0 = byte, 1 = short, 2 = long) */
267 false, /* pc_relative */
269 complain_overflow_bitfield, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC64_ADDR14", /* name */
272 false, /* partial_inplace */
274 0xfffc, /* dst_mask */
275 false), /* pcrel_offset */
277 /* An absolute 16 bit branch, for which bit 10 should be set to
278 indicate that the branch is expected to be taken. The lower two
279 bits must be zero. */
280 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
282 2, /* size (0 = byte, 1 = short, 2 = long) */
284 false, /* pc_relative */
286 complain_overflow_bitfield, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR14_BRTAKEN",/* name */
289 false, /* partial_inplace */
291 0xfffc, /* dst_mask */
292 false), /* pcrel_offset */
294 /* An absolute 16 bit branch, for which bit 10 should be set to
295 indicate that the branch is not expected to be taken. The lower
296 two bits must be zero. */
297 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
301 false, /* pc_relative */
303 complain_overflow_bitfield, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR14_BRNTAKEN",/* name */
306 false, /* partial_inplace */
308 0xfffc, /* dst_mask */
309 false), /* pcrel_offset */
311 /* A relative 26 bit branch; the lower two bits must be zero. */
312 HOWTO (R_PPC64_REL24, /* type */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
316 true, /* pc_relative */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC64_REL24", /* name */
321 false, /* partial_inplace */
323 0x3fffffc, /* dst_mask */
324 true), /* pcrel_offset */
326 /* A relative 16 bit branch; the lower two bits must be zero. */
327 HOWTO (R_PPC64_REL14, /* type */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
331 true, /* pc_relative */
333 complain_overflow_signed, /* complain_on_overflow */
334 bfd_elf_generic_reloc, /* special_function */
335 "R_PPC64_REL14", /* name */
336 false, /* partial_inplace */
338 0xfffc, /* dst_mask */
339 true), /* pcrel_offset */
341 /* A relative 16 bit branch. Bit 10 should be set to indicate that
342 the branch is expected to be taken. The lower two bits must be
344 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 true, /* pc_relative */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC64_REL14_BRTAKEN", /* name */
353 false, /* partial_inplace */
355 0xfffc, /* dst_mask */
356 true), /* pcrel_offset */
358 /* A relative 16 bit branch. Bit 10 should be set to indicate that
359 the branch is not expected to be taken. The lower two bits must
361 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
365 true, /* pc_relative */
367 complain_overflow_signed, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_PPC64_REL14_BRNTAKEN",/* name */
370 false, /* partial_inplace */
372 0xfffc, /* dst_mask */
373 true), /* pcrel_offset */
375 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
377 HOWTO (R_PPC64_GOT16, /* type */
379 1, /* size (0 = byte, 1 = short, 2 = long) */
381 false, /* pc_relative */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC64_GOT16", /* name */
386 false, /* partial_inplace */
388 0xffff, /* dst_mask */
389 false), /* pcrel_offset */
391 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
393 HOWTO (R_PPC64_GOT16_LO, /* type */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
397 false, /* pc_relative */
399 complain_overflow_dont, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC64_GOT16_LO", /* name */
402 false, /* partial_inplace */
404 0xffff, /* dst_mask */
405 false), /* pcrel_offset */
407 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
409 HOWTO (R_PPC64_GOT16_HI, /* type */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
413 false, /* pc_relative */
415 complain_overflow_dont,/* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC64_GOT16_HI", /* name */
418 false, /* partial_inplace */
420 0xffff, /* dst_mask */
421 false), /* pcrel_offset */
423 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
425 HOWTO (R_PPC64_GOT16_HA, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 false, /* pc_relative */
431 complain_overflow_dont,/* complain_on_overflow */
432 ppc64_elf_addr16_ha_reloc, /* special_function */
433 "R_PPC64_GOT16_HA", /* name */
434 false, /* partial_inplace */
436 0xffff, /* dst_mask */
437 false), /* pcrel_offset */
439 /* This is used only by the dynamic linker. The symbol should exist
440 both in the object being run and in some shared library. The
441 dynamic linker copies the data addressed by the symbol from the
442 shared library into the object, because the object being
443 run has to have the data at some particular address. */
444 HOWTO (R_PPC64_COPY, /* type */
446 2, /* size (0 = byte, 1 = short, 2 = long) */
448 false, /* pc_relative */
450 complain_overflow_bitfield, /* complain_on_overflow */
451 bfd_elf_generic_reloc, /* special_function */
452 "R_PPC64_COPY", /* name */
453 false, /* partial_inplace */
456 false), /* pcrel_offset */
458 /* Like R_PPC64_ADDR64, but used when setting global offset table
460 HOWTO (R_PPC64_GLOB_DAT, /* type */
462 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
464 false, /* pc_relative */
466 complain_overflow_dont, /* complain_on_overflow */
467 bfd_elf_generic_reloc, /* special_function */
468 "R_PPC64_GLOB_DAT", /* name */
469 false, /* partial_inplace */
471 0xffffffffffffffff, /* dst_mask */
472 false), /* pcrel_offset */
474 /* Created by the link editor. Marks a procedure linkage table
475 entry for a symbol. */
476 HOWTO (R_PPC64_JMP_SLOT, /* type */
478 0, /* size (0 = byte, 1 = short, 2 = long) */
480 false, /* pc_relative */
482 complain_overflow_dont, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC64_JMP_SLOT", /* name */
485 false, /* partial_inplace */
488 false), /* pcrel_offset */
490 /* Used only by the dynamic linker. When the object is run, this
491 doubleword64 is set to the load address of the object, plus the
493 HOWTO (R_PPC64_RELATIVE, /* type */
495 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
497 false, /* pc_relative */
499 complain_overflow_dont, /* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_PPC64_RELATIVE", /* name */
502 false, /* partial_inplace */
504 0xffffffffffffffff, /* dst_mask */
505 false), /* pcrel_offset */
507 /* Like R_PPC64_ADDR32, but may be unaligned. */
508 HOWTO (R_PPC64_UADDR32, /* type */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
512 false, /* pc_relative */
514 complain_overflow_bitfield, /* complain_on_overflow */
515 bfd_elf_generic_reloc, /* special_function */
516 "R_PPC64_UADDR32", /* name */
517 false, /* partial_inplace */
519 0xffffffff, /* dst_mask */
520 false), /* pcrel_offset */
522 /* Like R_PPC64_ADDR16, but may be unaligned. */
523 HOWTO (R_PPC64_UADDR16, /* type */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
527 false, /* pc_relative */
529 complain_overflow_bitfield, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC64_UADDR16", /* name */
532 false, /* partial_inplace */
534 0xffff, /* dst_mask */
535 false), /* pcrel_offset */
537 /* 32-bit PC relative. */
538 HOWTO (R_PPC64_REL32, /* type */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
542 true, /* pc_relative */
544 /* FIXME: Verify. Was complain_overflow_bitfield. */
545 complain_overflow_signed, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_PPC64_REL32", /* name */
548 false, /* partial_inplace */
550 0xffffffff, /* dst_mask */
551 true), /* pcrel_offset */
553 /* 32-bit relocation to the symbol's procedure linkage table. */
554 HOWTO (R_PPC64_PLT32, /* type */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
558 false, /* pc_relative */
560 complain_overflow_bitfield, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_PPC64_PLT32", /* name */
563 false, /* partial_inplace */
566 false), /* pcrel_offset */
568 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
569 FIXME: R_PPC64_PLTREL32 not supported. */
570 HOWTO (R_PPC64_PLTREL32, /* type */
572 2, /* size (0 = byte, 1 = short, 2 = long) */
574 true, /* pc_relative */
576 complain_overflow_signed, /* complain_on_overflow */
577 bfd_elf_generic_reloc, /* special_function */
578 "R_PPC64_PLTREL32", /* name */
579 false, /* partial_inplace */
582 true), /* pcrel_offset */
584 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
586 HOWTO (R_PPC64_PLT16_LO, /* type */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
590 false, /* pc_relative */
592 complain_overflow_dont, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC64_PLT16_LO", /* name */
595 false, /* partial_inplace */
597 0xffff, /* dst_mask */
598 false), /* pcrel_offset */
600 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
602 HOWTO (R_PPC64_PLT16_HI, /* type */
604 1, /* size (0 = byte, 1 = short, 2 = long) */
606 false, /* pc_relative */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC64_PLT16_HI", /* name */
611 false, /* partial_inplace */
613 0xffff, /* dst_mask */
614 false), /* pcrel_offset */
616 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
618 HOWTO (R_PPC64_PLT16_HA, /* type */
620 1, /* size (0 = byte, 1 = short, 2 = long) */
622 false, /* pc_relative */
624 complain_overflow_dont, /* complain_on_overflow */
625 ppc64_elf_addr16_ha_reloc, /* special_function */
626 "R_PPC64_PLT16_HA", /* name */
627 false, /* partial_inplace */
629 0xffff, /* dst_mask */
630 false), /* pcrel_offset */
632 /* 32-bit section relative relocation. */
633 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
635 HOWTO (R_PPC64_SECTOFF, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 true, /* pc_relative */
641 complain_overflow_bitfield, /* complain_on_overflow */
642 bfd_elf_generic_reloc, /* special_function */
643 "R_PPC64_SECTOFF", /* name */
644 false, /* partial_inplace */
647 true), /* pcrel_offset */
649 /* 16-bit lower half section relative relocation. */
650 HOWTO (R_PPC64_SECTOFF_LO, /* type */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
654 false, /* pc_relative */
656 complain_overflow_dont, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC64_SECTOFF_LO", /* name */
659 false, /* partial_inplace */
661 0xffff, /* dst_mask */
662 false), /* pcrel_offset */
664 /* 16-bit upper half section relative relocation. */
665 HOWTO (R_PPC64_SECTOFF_HI, /* type */
667 1, /* size (0 = byte, 1 = short, 2 = long) */
669 false, /* pc_relative */
671 complain_overflow_dont, /* complain_on_overflow */
672 bfd_elf_generic_reloc, /* special_function */
673 "R_PPC64_SECTOFF_HI", /* name */
674 false, /* partial_inplace */
676 0xffff, /* dst_mask */
677 false), /* pcrel_offset */
679 /* 16-bit upper half adjusted section relative relocation. */
680 HOWTO (R_PPC64_SECTOFF_HA, /* type */
682 1, /* size (0 = byte, 1 = short, 2 = long) */
684 false, /* pc_relative */
686 complain_overflow_dont, /* complain_on_overflow */
687 ppc64_elf_addr16_ha_reloc, /* special_function */
688 "R_PPC64_SECTOFF_HA", /* name */
689 false, /* partial_inplace */
691 0xffff, /* dst_mask */
692 false), /* pcrel_offset */
694 /* Like R_PPC64_REL24 without touching the two least significant
696 /* FIXME: Verify R_PPC64_ADDR30. */
697 HOWTO (R_PPC64_ADDR30, /* type */
699 2, /* size (0 = byte, 1 = short, 2 = long) */
701 true, /* pc_relative */
703 complain_overflow_dont, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC64_ADDR30", /* name */
706 false, /* partial_inplace */
708 0xfffffffc, /* dst_mask */
709 true), /* pcrel_offset */
711 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
713 /* A standard 64-bit relocation. */
714 HOWTO (R_PPC64_ADDR64, /* type */
716 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
718 false, /* pc_relative */
720 complain_overflow_dont, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 "R_PPC64_ADDR64", /* name */
723 false, /* partial_inplace */
725 0xffffffffffffffff, /* dst_mask */
726 false), /* pcrel_offset */
728 /* The bits 32-47 of an address. */
729 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 false, /* pc_relative */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC64_ADDR16_HIGHER", /* name */
738 false, /* partial_inplace */
740 0xffff, /* dst_mask */
741 false), /* pcrel_offset */
743 /* The bits 32-47 of an address, plus 1 if the contents of the low
744 16 bits, treated as a signed number, is negative. */
745 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
747 1, /* size (0 = byte, 1 = short, 2 = long) */
749 false, /* pc_relative */
751 complain_overflow_dont, /* complain_on_overflow */
752 ppc64_elf_addr16_ha_reloc, /* special_function */
753 "R_PPC64_ADDR16_HIGHERA", /* name */
754 false, /* partial_inplace */
756 0xffff, /* dst_mask */
757 false), /* pcrel_offset */
759 /* The bits 48-63 of an address. */
760 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
762 1, /* size (0 = byte, 1 = short, 2 = long) */
764 false, /* pc_relative */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR16_HIGHEST", /* name */
769 false, /* partial_inplace */
771 0xffff, /* dst_mask */
772 false), /* pcrel_offset */
774 /* The bits 48-63 of an address, plus 1 if the contents of the low
775 16 bits, treated as a signed number, is negative. */
776 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 false, /* pc_relative */
782 complain_overflow_dont, /* complain_on_overflow */
783 ppc64_elf_addr16_ha_reloc, /* special_function */
784 "R_PPC64_ADDR16_HIGHESTA", /* name */
785 false, /* partial_inplace */
787 0xffff, /* dst_mask */
788 false), /* pcrel_offset */
790 /* Like ADDR64, but may be unaligned. */
791 HOWTO (R_PPC64_UADDR64, /* type */
793 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
795 false, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC64_UADDR64", /* name */
800 false, /* partial_inplace */
802 0xffffffffffffffff, /* dst_mask */
803 false), /* pcrel_offset */
805 /* 64-bit relative relocation. */
806 HOWTO (R_PPC64_REL64, /* type */
808 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
810 true, /* pc_relative */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_REL64", /* name */
815 false, /* partial_inplace */
817 0xffffffffffffffff, /* dst_mask */
818 true), /* pcrel_offset */
820 /* 64-bit relocation to the symbol's procedure linkage table. */
821 HOWTO (R_PPC64_PLT64, /* type */
823 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
825 false, /* pc_relative */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_PPC64_PLT64", /* name */
830 false, /* partial_inplace */
833 false), /* pcrel_offset */
835 /* 64-bit PC relative relocation to the symbol's procedure linkage
837 /* FIXME: R_PPC64_PLTREL64 not supported. */
838 HOWTO (R_PPC64_PLTREL64, /* type */
840 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
842 true, /* pc_relative */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_PLTREL64", /* name */
847 false, /* partial_inplace */
850 true), /* pcrel_offset */
852 /* 16 bit TOC-relative relocation. */
854 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
855 HOWTO (R_PPC64_TOC16, /* type */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
859 false, /* pc_relative */
861 complain_overflow_signed, /* complain_on_overflow */
862 bfd_elf_generic_reloc, /* special_function */
863 "R_PPC64_TOC16", /* name */
864 false, /* partial_inplace */
866 0xffff, /* dst_mask */
867 false), /* pcrel_offset */
869 /* 16 bit TOC-relative relocation without overflow. */
871 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
872 HOWTO (R_PPC64_TOC16_LO, /* 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_LO", /* name */
881 false, /* partial_inplace */
883 0xffff, /* dst_mask */
884 false), /* pcrel_offset */
886 /* 16 bit TOC-relative relocation, high 16 bits. */
888 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
889 HOWTO (R_PPC64_TOC16_HI, /* type */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
893 false, /* pc_relative */
895 complain_overflow_dont, /* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_PPC64_TOC16_HI", /* name */
898 false, /* partial_inplace */
900 0xffff, /* dst_mask */
901 false), /* pcrel_offset */
903 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
904 contents of the low 16 bits, treated as a signed number, is
907 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
908 HOWTO (R_PPC64_TOC16_HA, /* type */
910 1, /* size (0 = byte, 1 = short, 2 = long) */
912 false, /* pc_relative */
914 complain_overflow_dont, /* complain_on_overflow */
915 ppc64_elf_addr16_ha_reloc, /* special_function */
916 "R_PPC64_TOC16_HA", /* name */
917 false, /* partial_inplace */
919 0xffff, /* dst_mask */
920 false), /* pcrel_offset */
922 /* 64-bit relocation; insert value of TOC base (.TOC.). */
924 /* R_PPC64_TOC 51 doubleword64 .TOC. */
925 HOWTO (R_PPC64_TOC, /* type */
927 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
929 false, /* pc_relative */
931 complain_overflow_bitfield, /* complain_on_overflow */
932 bfd_elf_generic_reloc, /* special_function */
933 "R_PPC64_TOC", /* name */
934 false, /* partial_inplace */
936 0xffffffffffffffff, /* dst_mask */
937 false), /* pcrel_offset */
939 /* Like R_PPC64_GOT16, but also informs the link editor that the
940 value to relocate may (!) refer to a PLT entry which the link
941 editor (a) may replace with the symbol value. If the link editor
942 is unable to fully resolve the symbol, it may (b) create a PLT
943 entry and store the address to the new PLT entry in the GOT.
944 This permits lazy resolution of function symbols at run time.
945 The link editor may also skip all of this and just (c) emit a
946 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
947 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
948 HOWTO (R_PPC64_PLTGOT16, /* type */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
952 false, /* pc_relative */
954 complain_overflow_signed, /* complain_on_overflow */
955 bfd_elf_generic_reloc, /* special_function */
956 "R_PPC64_PLTGOT16", /* name */
957 false, /* partial_inplace */
959 0xffff, /* dst_mask */
960 false), /* pcrel_offset */
962 /* Like R_PPC64_PLTGOT16, but without overflow. */
963 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
964 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
968 false, /* pc_relative */
970 complain_overflow_dont, /* complain_on_overflow */
971 bfd_elf_generic_reloc, /* special_function */
972 "R_PPC64_PLTGOT16_LO", /* name */
973 false, /* partial_inplace */
975 0xffff, /* dst_mask */
976 false), /* pcrel_offset */
978 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
979 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
980 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 false, /* pc_relative */
986 complain_overflow_dont, /* complain_on_overflow */
987 bfd_elf_generic_reloc, /* special_function */
988 "R_PPC64_PLTGOT16_HI", /* name */
989 false, /* partial_inplace */
991 0xffff, /* dst_mask */
992 false), /* pcrel_offset */
994 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
995 1 if the contents of the low 16 bits, treated as a signed number,
997 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
998 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 false, /* pc_relative */
1004 complain_overflow_dont,/* complain_on_overflow */
1005 ppc64_elf_addr16_ha_reloc, /* special_function */
1006 "R_PPC64_PLTGOT16_HA", /* name */
1007 false, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 false), /* pcrel_offset */
1012 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1013 HOWTO (R_PPC64_ADDR16_DS, /* type */
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 false, /* pc_relative */
1019 complain_overflow_bitfield, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_PPC64_ADDR16_DS", /* name */
1022 false, /* partial_inplace */
1024 0xfffc, /* dst_mask */
1025 false), /* pcrel_offset */
1027 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1028 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 false, /* pc_relative */
1034 complain_overflow_dont,/* complain_on_overflow */
1035 bfd_elf_generic_reloc, /* special_function */
1036 "R_PPC64_ADDR16_LO_DS",/* name */
1037 false, /* partial_inplace */
1039 0xfffc, /* dst_mask */
1040 false), /* pcrel_offset */
1042 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1043 HOWTO (R_PPC64_GOT16_DS, /* type */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1047 false, /* pc_relative */
1049 complain_overflow_signed, /* complain_on_overflow */
1050 bfd_elf_generic_reloc, /* special_function */
1051 "R_PPC64_GOT16_DS", /* name */
1052 false, /* partial_inplace */
1054 0xfffc, /* dst_mask */
1055 false), /* pcrel_offset */
1057 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1062 false, /* pc_relative */
1064 complain_overflow_dont, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_GOT16_LO_DS", /* name */
1067 false, /* partial_inplace */
1069 0xfffc, /* dst_mask */
1070 false), /* pcrel_offset */
1072 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1077 false, /* pc_relative */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_PLT16_LO_DS", /* name */
1082 false, /* partial_inplace */
1084 0xfffc, /* dst_mask */
1085 false), /* pcrel_offset */
1087 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1088 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
1090 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1092 2, /* size (0 = byte, 1 = short, 2 = long) */
1094 true, /* pc_relative */
1096 complain_overflow_bitfield, /* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
1098 "R_PPC64_SECTOFF_DS", /* name */
1099 false, /* partial_inplace */
1102 true), /* pcrel_offset */
1104 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 false, /* pc_relative */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 bfd_elf_generic_reloc, /* special_function */
1113 "R_PPC64_SECTOFF_LO_DS",/* name */
1114 false, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 false), /* pcrel_offset */
1119 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_TOC16_DS, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 false, /* pc_relative */
1126 complain_overflow_signed, /* complain_on_overflow */
1127 bfd_elf_generic_reloc, /* special_function */
1128 "R_PPC64_TOC16_DS", /* name */
1129 false, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 false), /* pcrel_offset */
1134 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 false, /* pc_relative */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 bfd_elf_generic_reloc, /* special_function */
1143 "R_PPC64_TOC16_LO_DS", /* name */
1144 false, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 false), /* pcrel_offset */
1149 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1150 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1151 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 false, /* pc_relative */
1157 complain_overflow_signed, /* complain_on_overflow */
1158 bfd_elf_generic_reloc, /* special_function */
1159 "R_PPC64_PLTGOT16_DS", /* name */
1160 false, /* partial_inplace */
1162 0xfffc, /* dst_mask */
1163 false), /* pcrel_offset */
1165 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1166 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1167 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1171 false, /* pc_relative */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 bfd_elf_generic_reloc, /* special_function */
1175 "R_PPC64_PLTGOT16_LO_DS",/* name */
1176 false, /* partial_inplace */
1178 0xfffc, /* dst_mask */
1179 false), /* pcrel_offset */
1181 /* GNU extension to record C++ vtable hierarchy. */
1182 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1184 0, /* size (0 = byte, 1 = short, 2 = long) */
1186 false, /* pc_relative */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 NULL, /* special_function */
1190 "R_PPC64_GNU_VTINHERIT", /* name */
1191 false, /* partial_inplace */
1194 false), /* pcrel_offset */
1196 /* GNU extension to record C++ vtable member usage. */
1197 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1199 0, /* size (0 = byte, 1 = short, 2 = long) */
1201 false, /* pc_relative */
1203 complain_overflow_dont, /* complain_on_overflow */
1204 NULL, /* special_function */
1205 "R_PPC64_GNU_VTENTRY", /* name */
1206 false, /* partial_inplace */
1209 false), /* pcrel_offset */
1213 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1219 unsigned int i, type;
1222 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1225 type = ppc64_elf_howto_raw[i].type;
1226 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1227 / sizeof (ppc64_elf_howto_table[0])));
1228 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1232 static reloc_howto_type *
1233 ppc64_elf_reloc_type_lookup (abfd, code)
1234 bfd *abfd ATTRIBUTE_UNUSED;
1235 bfd_reloc_code_real_type code;
1237 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1239 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1240 /* Initialize howto table if needed. */
1246 return (reloc_howto_type *) NULL;
1248 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1250 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1252 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1254 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1256 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1258 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1260 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1262 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1264 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1266 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1268 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1270 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1272 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1274 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1276 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1278 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1280 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1282 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1284 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1286 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1288 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1290 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1292 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1294 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1296 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1298 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1300 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
1302 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1304 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1306 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1308 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
1310 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1312 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1314 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1316 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1318 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1320 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1322 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1324 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1326 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1328 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1330 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1332 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1334 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1336 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1338 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1340 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1342 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1344 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1346 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1348 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1350 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1352 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1354 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1356 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1358 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1360 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1362 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1364 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1366 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1368 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1372 return ppc64_elf_howto_table[(int) ppc_reloc];
1375 /* Set the howto pointer for a PowerPC ELF reloc. */
1378 ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1379 bfd *abfd ATTRIBUTE_UNUSED;
1381 Elf64_Internal_Rela *dst;
1385 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1386 /* Initialize howto table if needed. */
1389 type = ELF64_R_TYPE (dst->r_info);
1390 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1391 / sizeof (ppc64_elf_howto_table[0])));
1392 cache_ptr->howto = ppc64_elf_howto_table[type];
1395 /* Handle the R_PPC_ADDR16_HA and similar relocs. */
1397 static bfd_reloc_status_type
1398 ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1399 output_bfd, error_message)
1400 bfd *abfd ATTRIBUTE_UNUSED;
1401 arelent *reloc_entry;
1403 PTR data ATTRIBUTE_UNUSED;
1404 asection *input_section;
1406 char **error_message ATTRIBUTE_UNUSED;
1410 if (output_bfd != NULL)
1412 reloc_entry->address += input_section->output_offset;
1413 return bfd_reloc_ok;
1416 if (reloc_entry->address > input_section->_cooked_size)
1417 return bfd_reloc_outofrange;
1419 if (bfd_is_com_section (symbol->section))
1422 relocation = symbol->value;
1424 relocation += symbol->section->output_section->vma;
1425 relocation += symbol->section->output_offset;
1426 relocation += reloc_entry->addend;
1428 reloc_entry->addend += (relocation & 0x8000) << 1;
1430 return bfd_reloc_continue;
1433 /* Function to set whether a module needs the -mrelocatable bit set. */
1436 ppc64_elf_set_private_flags (abfd, flags)
1440 BFD_ASSERT (!elf_flags_init (abfd)
1441 || elf_elfheader (abfd)->e_flags == flags);
1443 elf_elfheader (abfd)->e_flags = flags;
1444 elf_flags_init (abfd) = true;
1448 /* Merge backend specific data from an object file to the output
1449 object file when linking. */
1451 ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1459 /* Check if we have the same endianess. */
1460 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1461 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1465 if (bfd_big_endian (ibfd))
1466 msg = _("%s: compiled for a big endian system and target is little endian");
1468 msg = _("%s: compiled for a little endian system and target is big endian");
1470 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
1472 bfd_set_error (bfd_error_wrong_format);
1476 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1477 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1480 new_flags = elf_elfheader (ibfd)->e_flags;
1481 old_flags = elf_elfheader (obfd)->e_flags;
1482 if (!elf_flags_init (obfd))
1484 /* First call, no flags set. */
1485 elf_flags_init (obfd) = true;
1486 elf_elfheader (obfd)->e_flags = new_flags;
1489 else if (new_flags == old_flags)
1490 /* Compatible flags are ok. */
1495 /* Incompatible flags. Warn about -mrelocatable mismatch.
1496 Allow -mrelocatable-lib to be linked with either. */
1498 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1499 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1502 (*_bfd_error_handler)
1503 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
1504 bfd_archive_filename (ibfd));
1506 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1507 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1510 (*_bfd_error_handler)
1511 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
1512 bfd_archive_filename (ibfd));
1515 /* The output is -mrelocatable-lib iff both the input files are. */
1516 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1517 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1519 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1520 but each input file is either -mrelocatable or -mrelocatable-lib. */
1521 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1522 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1523 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1524 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1526 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
1527 if any module uses it. */
1528 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1530 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1531 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1533 /* Warn about any other mismatches. */
1534 if (new_flags != old_flags)
1537 (*_bfd_error_handler)
1538 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
1539 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
1544 bfd_set_error (bfd_error_bad_value);
1552 /* Handle a PowerPC specific section when reading an object file. This
1553 is called when elfcode.h finds a section with an unknown type. */
1556 ppc64_elf_section_from_shdr (abfd, hdr, name)
1558 Elf64_Internal_Shdr *hdr;
1564 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1567 newsect = hdr->bfd_section;
1568 flags = bfd_get_section_flags (abfd, newsect);
1569 if (hdr->sh_flags & SHF_EXCLUDE)
1570 flags |= SEC_EXCLUDE;
1572 if (hdr->sh_type == SHT_ORDERED)
1573 flags |= SEC_SORT_ENTRIES;
1575 bfd_set_section_flags (abfd, newsect, flags);
1579 /* The following functions are specific to the ELF linker, while
1580 functions above are used generally. Those named ppc64_elf_* are
1581 called by the main ELF linker code. They appear in this file more
1582 or less in the order in which they are called. eg.
1583 ppc64_elf_check_relocs is called early in the link process,
1584 ppc64_elf_finish_dynamic_sections is one of the last functions
1587 /* The linker needs to keep track of the number of relocs that it
1588 decides to copy as dynamic relocs in check_relocs for each symbol.
1589 This is so that it can later discard them if they are found to be
1590 unnecessary. We store the information in a field extending the
1591 regular ELF linker hash table. */
1593 struct ppc_dyn_relocs
1595 struct ppc_dyn_relocs *next;
1597 /* The input section of the reloc. */
1600 /* Total number of relocs copied for the input section. */
1601 bfd_size_type count;
1603 /* Number of pc-relative relocs copied for the input section. */
1604 bfd_size_type pc_count;
1607 /* Of those relocs that might be copied as dynamic relocs, this macro
1608 selects between relative and absolute types. */
1610 #define IS_ABSOLUTE_RELOC(RTYPE) \
1611 ((RTYPE) != R_PPC64_REL14 \
1612 && (RTYPE) != R_PPC64_REL14_BRNTAKEN \
1613 && (RTYPE) != R_PPC64_REL14_BRTAKEN \
1614 && (RTYPE) != R_PPC64_REL24 \
1615 && (RTYPE) != R_PPC64_REL32 \
1616 && (RTYPE) != R_PPC64_REL64)
1618 /* ppc64 ELF linker hash entry. */
1620 struct ppc_link_hash_entry
1622 struct elf_link_hash_entry elf;
1624 /* Track dynamic relocs copied for this symbol. */
1625 struct ppc_dyn_relocs *dyn_relocs;
1628 /* ppc64 ELF linker hash table. */
1630 struct ppc_link_hash_table
1632 struct elf_link_hash_table elf;
1634 /* Short-cuts to get to dynamic linker sections. */
1647 /* Small local sym to section mapping cache. */
1648 struct sym_sec_cache sym_sec;
1651 /* Get the ppc64 ELF linker hash table from a link_info structure. */
1653 #define ppc_hash_table(p) \
1654 ((struct ppc_link_hash_table *) ((p)->hash))
1656 /* Create an entry in a ppc64 ELF linker hash table. */
1658 static struct bfd_hash_entry *
1659 link_hash_newfunc (entry, table, string)
1660 struct bfd_hash_entry *entry;
1661 struct bfd_hash_table *table;
1664 /* Allocate the structure if it has not already been allocated by a
1668 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
1673 /* Call the allocation method of the superclass. */
1674 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1677 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
1679 eh->dyn_relocs = NULL;
1685 /* Create a ppc64 ELF linker hash table. */
1687 static struct bfd_link_hash_table *
1688 ppc64_elf_link_hash_table_create (abfd)
1691 struct ppc_link_hash_table *htab;
1692 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
1694 htab = (struct ppc_link_hash_table *) bfd_alloc (abfd, amt);
1698 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
1700 bfd_release (abfd, htab);
1705 htab->srelgot = NULL;
1707 htab->srelplt = NULL;
1708 htab->sdynbss = NULL;
1709 htab->srelbss = NULL;
1711 htab->sglink = NULL;
1712 htab->plt_overflow = 0;
1713 htab->sym_sec.abfd = NULL;
1715 return &htab->elf.root;
1718 /* Create .got and .rela.got sections in DYNOBJ, and set up
1719 shortcuts to them in our hash table. */
1722 create_got_section (dynobj, info)
1724 struct bfd_link_info *info;
1726 struct ppc_link_hash_table *htab;
1728 if (! _bfd_elf_create_got_section (dynobj, info))
1731 htab = ppc_hash_table (info);
1732 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1736 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
1738 || ! bfd_set_section_flags (dynobj, htab->srelgot,
1739 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1740 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1742 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
1747 /* Create the .stub and .glink sections as well as the ordinary
1748 dynamic sections. */
1751 ppc64_elf_create_dynamic_sections (dynobj, info)
1753 struct bfd_link_info *info;
1755 struct ppc_link_hash_table *htab;
1758 htab = ppc_hash_table (info);
1759 if (!htab->sgot && !create_got_section (dynobj, info))
1762 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1765 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1766 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
1767 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1769 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1771 if (!htab->splt || !htab->srelplt || !htab->sdynbss
1772 || (!info->shared && !htab->srelbss))
1775 /* Create .stub and .glink for global linkage functions. */
1776 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
1777 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1778 htab->sstub = bfd_make_section (dynobj, ".stub");
1779 if (htab->sstub == NULL
1780 || ! bfd_set_section_flags (dynobj, htab->sstub, flags)
1781 || ! bfd_set_section_alignment (dynobj, htab->sstub, 2))
1783 htab->sglink = bfd_make_section (dynobj, ".glink");
1784 if (htab->sglink == NULL
1785 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
1786 || ! bfd_set_section_alignment (dynobj, htab->sglink, 3))
1792 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1795 ppc64_elf_copy_indirect_symbol (dir, ind)
1796 struct elf_link_hash_entry *dir, *ind;
1798 struct ppc_link_hash_entry *edir, *eind;
1800 edir = (struct ppc_link_hash_entry *) dir;
1801 eind = (struct ppc_link_hash_entry *) ind;
1803 if (eind->dyn_relocs != NULL)
1805 if (edir->dyn_relocs != NULL)
1807 struct ppc_dyn_relocs **pp;
1808 struct ppc_dyn_relocs *p;
1810 if (ind->root.type == bfd_link_hash_indirect)
1813 /* Add reloc counts against the weak sym to the strong sym
1814 list. Merge any entries against the same section. */
1815 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1817 struct ppc_dyn_relocs *q;
1819 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1820 if (q->sec == p->sec)
1822 q->pc_count += p->pc_count;
1823 q->count += p->count;
1830 *pp = edir->dyn_relocs;
1833 edir->dyn_relocs = eind->dyn_relocs;
1834 eind->dyn_relocs = NULL;
1837 _bfd_elf_link_hash_copy_indirect (dir, ind);
1840 /* Look through the relocs for a section during the first phase, and
1841 calculate needed space in the global offset table, procedure
1842 linkage table, and dynamic reloc sections. */
1845 ppc64_elf_check_relocs (abfd, info, sec, relocs)
1847 struct bfd_link_info *info;
1849 const Elf_Internal_Rela *relocs;
1851 struct ppc_link_hash_table *htab;
1852 Elf_Internal_Shdr *symtab_hdr;
1853 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1854 const Elf_Internal_Rela *rel;
1855 const Elf_Internal_Rela *rel_end;
1858 if (info->relocateable)
1861 htab = ppc_hash_table (info);
1862 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1864 sym_hashes = elf_sym_hashes (abfd);
1865 sym_hashes_end = (sym_hashes
1866 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
1867 if (!elf_bad_symtab (abfd))
1868 sym_hashes_end -= symtab_hdr->sh_info;
1872 rel_end = relocs + sec->reloc_count;
1873 for (rel = relocs; rel < rel_end; rel++)
1875 unsigned long r_symndx;
1876 struct elf_link_hash_entry *h;
1877 enum elf_ppc_reloc_type r_type;
1879 r_symndx = ELF64_R_SYM (rel->r_info);
1880 if (r_symndx < symtab_hdr->sh_info)
1883 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1885 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
1888 /* GOT16 relocations */
1890 case R_PPC64_GOT16_DS:
1891 case R_PPC64_GOT16_HA:
1892 case R_PPC64_GOT16_HI:
1893 case R_PPC64_GOT16_LO:
1894 case R_PPC64_GOT16_LO_DS:
1896 /* This symbol requires a global offset table entry. */
1897 if (htab->sgot == NULL)
1899 if (htab->elf.dynobj == NULL)
1900 htab->elf.dynobj = abfd;
1901 if (!create_got_section (htab->elf.dynobj, info))
1907 h->got.refcount += 1;
1911 bfd_signed_vma *local_got_refcounts;
1913 /* This is a global offset table entry for a local symbol. */
1914 local_got_refcounts = elf_local_got_refcounts (abfd);
1915 if (local_got_refcounts == NULL)
1919 size = symtab_hdr->sh_info;
1920 size *= sizeof (bfd_signed_vma);
1921 local_got_refcounts = ((bfd_signed_vma *)
1922 bfd_zalloc (abfd, size));
1923 if (local_got_refcounts == NULL)
1925 elf_local_got_refcounts (abfd) = local_got_refcounts;
1927 local_got_refcounts[r_symndx] += 1;
1931 case R_PPC64_PLT16_HA:
1932 case R_PPC64_PLT16_HI:
1933 case R_PPC64_PLT16_LO:
1936 /* This symbol requires a procedure linkage table entry. We
1937 actually build the entry in adjust_dynamic_symbol,
1938 because this might be a case of linking PIC code without
1939 linking in any dynamic objects, in which case we don't
1940 need to generate a procedure linkage table after all. */
1943 /* It does not make sense to have a procedure linkage
1944 table entry for a local symbol. */
1945 bfd_set_error (bfd_error_bad_value);
1949 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1950 h->plt.refcount += 1;
1953 /* The following relocations don't need to propagate the
1954 relocation if linking a shared object since they are
1955 section relative. */
1956 case R_PPC64_SECTOFF:
1957 case R_PPC64_SECTOFF_LO:
1958 case R_PPC64_SECTOFF_HI:
1959 case R_PPC64_SECTOFF_HA:
1960 case R_PPC64_SECTOFF_DS:
1961 case R_PPC64_SECTOFF_LO_DS:
1963 case R_PPC64_TOC16_LO:
1964 case R_PPC64_TOC16_HI:
1965 case R_PPC64_TOC16_HA:
1966 case R_PPC64_TOC16_DS:
1967 case R_PPC64_TOC16_LO_DS:
1970 /* This relocation describes the C++ object vtable hierarchy.
1971 Reconstruct it for later use during GC. */
1972 case R_PPC64_GNU_VTINHERIT:
1973 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1977 /* This relocation describes which C++ vtable entries are actually
1978 used. Record for later use during GC. */
1979 case R_PPC64_GNU_VTENTRY:
1980 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1987 /* We may need a .plt entry if the function this reloc
1988 refers to is in a shared lib. */
1989 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1990 h->plt.refcount += 1;
1997 case R_PPC64_REL14_BRTAKEN:
1998 case R_PPC64_REL14_BRNTAKEN:
1999 case R_PPC64_ADDR14:
2000 case R_PPC64_ADDR14_BRNTAKEN:
2001 case R_PPC64_ADDR14_BRTAKEN:
2002 case R_PPC64_ADDR16:
2003 case R_PPC64_ADDR16_DS:
2004 case R_PPC64_ADDR16_HA:
2005 case R_PPC64_ADDR16_HI:
2006 case R_PPC64_ADDR16_HIGHER:
2007 case R_PPC64_ADDR16_HIGHERA:
2008 case R_PPC64_ADDR16_HIGHEST:
2009 case R_PPC64_ADDR16_HIGHESTA:
2010 case R_PPC64_ADDR16_LO:
2011 case R_PPC64_ADDR16_LO_DS:
2012 case R_PPC64_ADDR24:
2013 case R_PPC64_ADDR30:
2014 case R_PPC64_ADDR32:
2015 case R_PPC64_ADDR64:
2016 case R_PPC64_UADDR16:
2017 case R_PPC64_UADDR32:
2018 case R_PPC64_UADDR64:
2020 /* If we are creating a shared library, and this is a reloc
2021 against a global symbol, or a non PC relative reloc
2022 against a local symbol, then we need to copy the reloc
2023 into the shared library. However, if we are linking with
2024 -Bsymbolic, we do not need to copy a reloc against a
2025 global symbol which is defined in an object we are
2026 including in the link (i.e., DEF_REGULAR is set). At
2027 this point we have not seen all the input files, so it is
2028 possible that DEF_REGULAR is not set now but will be set
2029 later (it is never cleared). In case of a weak definition,
2030 DEF_REGULAR may be cleared later by a strong definition in
2031 a shared library. We account for that possibility below by
2032 storing information in the relocs_copied field of the hash
2033 table entry. A similar situation occurs when creating
2034 shared libraries and symbol visibility changes render the
2037 If on the other hand, we are creating an executable, we
2038 may need to keep relocations for symbols satisfied by a
2039 dynamic library if we manage to avoid copy relocs for the
2042 && (sec->flags & SEC_ALLOC) != 0
2043 && (IS_ABSOLUTE_RELOC (r_type)
2045 && (! info->symbolic
2046 || h->root.type == bfd_link_hash_defweak
2047 || (h->elf_link_hash_flags
2048 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2050 && (sec->flags & SEC_ALLOC) != 0
2052 && (h->root.type == bfd_link_hash_defweak
2053 || (h->elf_link_hash_flags
2054 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
2056 struct ppc_dyn_relocs *p;
2057 struct ppc_dyn_relocs **head;
2060 /* Don't propagate .opd relocs. */
2061 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
2065 /* We must copy these reloc types into the output file.
2066 Create a reloc section in dynobj and make room for
2073 name = (bfd_elf_string_from_elf_section
2075 elf_elfheader (abfd)->e_shstrndx,
2076 elf_section_data (sec)->rel_hdr.sh_name));
2080 if (strncmp (name, ".rela", 5) != 0
2081 || strcmp (bfd_get_section_name (abfd, sec),
2084 (*_bfd_error_handler)
2085 (_("%s: bad relocation section name `%s\'"),
2086 bfd_archive_filename (abfd), name);
2087 bfd_set_error (bfd_error_bad_value);
2090 if (htab->elf.dynobj == NULL)
2091 htab->elf.dynobj = abfd;
2093 dynobj = htab->elf.dynobj;
2094 sreloc = bfd_get_section_by_name (dynobj, name);
2099 sreloc = bfd_make_section (dynobj, name);
2100 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2101 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2102 if ((sec->flags & SEC_ALLOC) != 0)
2103 flags |= SEC_ALLOC | SEC_LOAD;
2105 || ! bfd_set_section_flags (dynobj, sreloc, flags)
2106 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
2109 elf_section_data (sec)->sreloc = sreloc;
2112 /* If this is a global symbol, we count the number of
2113 relocations we need for this symbol. */
2116 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
2120 /* Track dynamic relocs needed for local syms too.
2121 We really need local syms available to do this
2125 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2130 head = ((struct ppc_dyn_relocs **)
2131 &elf_section_data (s)->local_dynrel);
2135 if (p == NULL || p->sec != sec)
2137 p = ((struct ppc_dyn_relocs *)
2138 bfd_alloc (htab->elf.dynobj,
2139 (bfd_size_type) sizeof *p));
2150 if (!IS_ABSOLUTE_RELOC (r_type))
2162 /* Return the section that should be marked against GC for a given
2166 ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
2168 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2169 Elf_Internal_Rela *rel;
2170 struct elf_link_hash_entry *h;
2171 Elf_Internal_Sym *sym;
2175 enum elf_ppc_reloc_type r_type;
2177 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2180 case R_PPC64_GNU_VTINHERIT:
2181 case R_PPC64_GNU_VTENTRY:
2185 switch (h->root.type)
2187 case bfd_link_hash_defined:
2188 case bfd_link_hash_defweak:
2189 return h->root.u.def.section;
2191 case bfd_link_hash_common:
2192 return h->root.u.c.p->section;
2201 return bfd_section_from_elf_index (abfd, sym->st_shndx);
2207 /* Update the .got, .plt. and dynamic reloc reference counts for the
2208 section being removed. */
2211 ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2213 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2215 const Elf_Internal_Rela *relocs;
2217 Elf_Internal_Shdr *symtab_hdr;
2218 struct elf_link_hash_entry **sym_hashes;
2219 bfd_signed_vma *local_got_refcounts;
2220 const Elf_Internal_Rela *rel, *relend;
2222 elf_section_data (sec)->local_dynrel = NULL;
2224 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2225 sym_hashes = elf_sym_hashes (abfd);
2226 local_got_refcounts = elf_local_got_refcounts (abfd);
2228 relend = relocs + sec->reloc_count;
2229 for (rel = relocs; rel < relend; rel++)
2231 unsigned long r_symndx;
2232 enum elf_ppc_reloc_type r_type;
2233 struct elf_link_hash_entry *h;
2235 r_symndx = ELF64_R_SYM (rel->r_info);
2236 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2240 case R_PPC64_GOT16_DS:
2241 case R_PPC64_GOT16_HA:
2242 case R_PPC64_GOT16_HI:
2243 case R_PPC64_GOT16_LO:
2244 case R_PPC64_GOT16_LO_DS:
2245 if (r_symndx >= symtab_hdr->sh_info)
2247 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2248 if (h->got.refcount > 0)
2253 if (local_got_refcounts[r_symndx] > 0)
2254 local_got_refcounts[r_symndx]--;
2258 case R_PPC64_PLT16_HA:
2259 case R_PPC64_PLT16_HI:
2260 case R_PPC64_PLT16_LO:
2263 if (r_symndx >= symtab_hdr->sh_info)
2265 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2266 if (h->plt.refcount > 0)
2272 if (r_symndx >= symtab_hdr->sh_info)
2274 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2275 if (h->plt.refcount > 0)
2281 case R_PPC64_REL14_BRNTAKEN:
2282 case R_PPC64_REL14_BRTAKEN:
2285 if (r_symndx >= symtab_hdr->sh_info)
2287 struct ppc_link_hash_entry *eh;
2288 struct ppc_dyn_relocs **pp;
2289 struct ppc_dyn_relocs *p;
2291 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2292 eh = (struct ppc_link_hash_entry *) h;
2294 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2306 case R_PPC64_ADDR14:
2307 case R_PPC64_ADDR14_BRNTAKEN:
2308 case R_PPC64_ADDR14_BRTAKEN:
2309 case R_PPC64_ADDR16:
2310 case R_PPC64_ADDR16_DS:
2311 case R_PPC64_ADDR16_HA:
2312 case R_PPC64_ADDR16_HI:
2313 case R_PPC64_ADDR16_HIGHER:
2314 case R_PPC64_ADDR16_HIGHERA:
2315 case R_PPC64_ADDR16_HIGHEST:
2316 case R_PPC64_ADDR16_HIGHESTA:
2317 case R_PPC64_ADDR16_LO:
2318 case R_PPC64_ADDR16_LO_DS:
2319 case R_PPC64_ADDR24:
2320 case R_PPC64_ADDR30:
2321 case R_PPC64_ADDR32:
2322 case R_PPC64_ADDR64:
2323 case R_PPC64_UADDR16:
2324 case R_PPC64_UADDR32:
2325 case R_PPC64_UADDR64:
2327 if (r_symndx >= symtab_hdr->sh_info)
2329 struct ppc_link_hash_entry *eh;
2330 struct ppc_dyn_relocs **pp;
2331 struct ppc_dyn_relocs *p;
2333 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2334 eh = (struct ppc_link_hash_entry *) h;
2336 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2354 /* Adjust a symbol defined by a dynamic object and referenced by a
2355 regular object. The current definition is in some section of the
2356 dynamic object, but we're not including those sections. We have to
2357 change the definition to something the rest of the link can
2361 ppc64_elf_adjust_dynamic_symbol (info, h)
2362 struct bfd_link_info *info;
2363 struct elf_link_hash_entry *h;
2365 struct ppc_link_hash_table *htab;
2366 struct ppc_link_hash_entry * eh;
2367 struct ppc_dyn_relocs *p;
2369 unsigned int power_of_two;
2371 htab = ppc_hash_table (info);
2373 /* If this is a function, put it in the procedure linkage table. We
2374 will fill in the contents of the procedure linkage table later. */
2375 if (h->type == STT_FUNC
2376 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2378 struct elf_link_hash_entry *fdh;
2380 /* If it's a function entry point, the name starts with a dot
2381 unless someone has written some poor assembly code. The ABI
2382 for .plt calls requires that there be a function descriptor
2383 sym which has the name of the function minus the dot. */
2385 if (h->plt.refcount <= 0
2386 || h->root.root.string[0] != '.'
2387 || h->root.root.string[1] == '\0'
2389 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2390 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
2392 /* This case can occur if we saw a PLT reloc in an input
2393 file, but the symbol was never referred to by a dynamic
2394 object, or if all references were garbage collected. In
2395 such a case, we don't actually need to build a procedure
2396 linkage table entry. */
2397 h->plt.offset = (bfd_vma) -1;
2398 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2402 /* Find the corresponding function descriptor symbol. Create it
2403 as undefined if necessary. ppc_elf64_finish_dynamic_symbol
2404 will look it up again and create a JMP_SLOT reloc for it. */
2406 fdh = elf_link_hash_lookup (elf_hash_table (info),
2407 h->root.root.string + 1,
2408 false, false, false);
2414 /* Create it as undefined. */
2415 newsym = bfd_make_empty_symbol (htab->elf.dynobj);
2416 newsym->name = h->root.root.string + 1;
2417 newsym->section = bfd_und_section_ptr;
2419 newsym->flags = BSF_DYNAMIC | BSF_OBJECT;
2421 if ( !(_bfd_generic_link_add_one_symbol
2422 (info, htab->elf.dynobj, newsym->name, newsym->flags,
2423 newsym->section, newsym->value, NULL, false, false,
2424 (struct bfd_link_hash_entry **) &fdh)))
2432 h->plt.offset = (bfd_vma) -1;
2434 /* If this is a weak symbol, and there is a real definition, the
2435 processor independent code will have arranged for us to see the
2436 real definition first, and we can just use the same value. */
2437 if (h->weakdef != NULL)
2439 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2440 || h->weakdef->root.type == bfd_link_hash_defweak);
2441 h->root.u.def.section = h->weakdef->root.u.def.section;
2442 h->root.u.def.value = h->weakdef->root.u.def.value;
2446 /* This is a reference to a symbol defined by a dynamic object which
2447 is not a function. */
2449 /* If we are creating a shared library, we must presume that the
2450 only references to the symbol are via the global offset table.
2451 For such cases we need not do anything here; the relocations will
2452 be handled correctly by relocate_section. */
2456 /* If there are no references to this symbol that do not use the
2457 GOT, we don't need to generate a copy reloc. */
2458 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2461 eh = (struct ppc_link_hash_entry *) h;
2462 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2464 s = p->sec->output_section;
2465 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2469 /* If we didn't find any dynamic relocs in read-only sections, then
2470 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2473 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2477 /* We must allocate the symbol in our .dynbss section, which will
2478 become part of the .bss section of the executable. There will be
2479 an entry for this symbol in the .dynsym section. The dynamic
2480 object will contain position independent code, so all references
2481 from the dynamic object to this symbol will go through the global
2482 offset table. The dynamic linker will use the .dynsym entry to
2483 determine the address it must put in the global offset table, so
2484 both the dynamic object and the regular object will refer to the
2485 same memory location for the variable. */
2487 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2488 copy the initial value out of the dynamic object and into the
2489 runtime process image. We need to remember the offset into the
2490 .rela.bss section we are going to use. */
2491 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2493 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
2494 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2497 /* We need to figure out the alignment required for this symbol. I
2498 have no idea how ELF linkers handle this. */
2499 power_of_two = bfd_log2 (h->size);
2500 if (power_of_two > 4)
2503 /* Apply the required alignment. */
2505 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
2506 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
2508 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
2512 /* Define the symbol as being at this point in the section. */
2513 h->root.u.def.section = s;
2514 h->root.u.def.value = s->_raw_size;
2516 /* Increment the section size to make room for the symbol. */
2517 s->_raw_size += h->size;
2522 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
2523 will be called from elflink.h. If elflink.h doesn't call our
2524 finish_dynamic_symbol routine, we'll need to do something about
2525 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
2526 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
2528 && ((INFO)->shared \
2529 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
2530 && ((H)->dynindx != -1 \
2531 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
2533 /* Allocate space in .plt, .got and associated reloc sections for
2537 allocate_dynrelocs (h, inf)
2538 struct elf_link_hash_entry *h;
2541 struct bfd_link_info *info;
2542 struct ppc_link_hash_table *htab;
2544 struct ppc_link_hash_entry *eh;
2545 struct ppc_dyn_relocs *p;
2547 if (h->root.type == bfd_link_hash_indirect
2548 || h->root.type == bfd_link_hash_warning)
2551 info = (struct bfd_link_info *) inf;
2552 htab = ppc_hash_table (info);
2554 if (htab->elf.dynamic_sections_created
2555 && h->plt.refcount > 0)
2557 /* Make sure this symbol is output as a dynamic symbol.
2558 Undefined weak syms won't yet be marked as dynamic. */
2559 if (h->dynindx == -1
2560 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2562 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2566 BFD_ASSERT (h->root.root.string[0] == '.'
2567 && h->root.root.string[1] != '\0');
2569 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2571 /* Make sure the corresponding function descriptor symbol is
2574 if (h->dynindx != -1)
2576 struct elf_link_hash_entry *fdh;
2578 fdh = elf_link_hash_lookup (elf_hash_table (info),
2579 h->root.root.string + 1,
2580 false, false, false);
2585 if (fdh->dynindx == -1
2586 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2588 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
2593 /* If this is the first .plt entry, make room for the special
2596 if (s->_raw_size == 0)
2597 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
2599 h->plt.offset = s->_raw_size;
2600 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2602 /* Make room for this entry. */
2603 s->_raw_size += PLT_ENTRY_SIZE;
2605 /* Make room for the .stub and .glink code. */
2607 s->_raw_size += PLT_CALL_STUB_SIZE;
2610 if (s->_raw_size == 0)
2611 s->_raw_size += GLINK_CALL_STUB_SIZE;
2612 /* We need bigger stubs past index 32767. */
2613 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
2615 s->_raw_size += 2*4;
2617 /* We also need to make an entry in the .rela.plt section. */
2619 s->_raw_size += sizeof (Elf64_External_Rela);
2623 h->plt.offset = (bfd_vma) -1;
2624 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2629 h->plt.offset = (bfd_vma) -1;
2630 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2633 if (h->got.refcount > 0)
2637 /* Make sure this symbol is output as a dynamic symbol.
2638 Undefined weak syms won't yet be marked as dynamic. */
2639 if (h->dynindx == -1
2640 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2642 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2647 h->got.offset = s->_raw_size;
2649 dyn = htab->elf.dynamic_sections_created;
2650 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2651 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2654 h->got.offset = (bfd_vma) -1;
2656 eh = (struct ppc_link_hash_entry *) h;
2657 if (eh->dyn_relocs == NULL)
2660 /* In the shared -Bsymbolic case, discard space allocated for
2661 dynamic pc-relative relocs against symbols which turn out to be
2662 defined in regular objects. For the normal shared case, discard
2663 space for relocs that have become local due to symbol visibility
2668 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2669 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2672 struct ppc_dyn_relocs **pp;
2674 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2676 p->count -= p->pc_count;
2687 /* For the non-shared case, discard space for relocs against
2688 symbols which turn out to need copy relocs or are not
2691 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2692 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2693 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2694 || (htab->elf.dynamic_sections_created
2695 && (h->root.type == bfd_link_hash_undefweak
2696 || h->root.type == bfd_link_hash_undefined))))
2698 /* Make sure this symbol is output as a dynamic symbol.
2699 Undefined weak syms won't yet be marked as dynamic. */
2700 if (h->dynindx == -1
2701 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2703 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2707 /* If that succeeded, we know we'll be keeping all the
2709 if (h->dynindx != -1)
2713 eh->dyn_relocs = NULL;
2718 /* Finally, allocate space. */
2719 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2721 asection *sreloc = elf_section_data (p->sec)->sreloc;
2722 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
2728 /* Find any dynamic relocs that apply to read-only sections. */
2731 readonly_dynrelocs (h, inf)
2732 struct elf_link_hash_entry *h;
2735 struct ppc_link_hash_entry *eh;
2736 struct ppc_dyn_relocs *p;
2738 eh = (struct ppc_link_hash_entry *) h;
2739 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2741 asection *s = p->sec->output_section;
2743 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2745 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2747 info->flags |= DF_TEXTREL;
2749 /* Not an error, just cut short the traversal. */
2756 /* Set the sizes of the dynamic sections. */
2759 ppc64_elf_size_dynamic_sections (output_bfd, info)
2760 bfd *output_bfd ATTRIBUTE_UNUSED;
2761 struct bfd_link_info *info;
2763 struct ppc_link_hash_table *htab;
2769 htab = ppc_hash_table (info);
2770 dynobj = htab->elf.dynobj;
2774 if (htab->elf.dynamic_sections_created)
2776 /* Set the contents of the .interp section to the interpreter. */
2779 s = bfd_get_section_by_name (dynobj, ".interp");
2782 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2783 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2787 /* Set up .got offsets for local syms, and space for local dynamic
2789 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2791 bfd_signed_vma *local_got;
2792 bfd_signed_vma *end_local_got;
2793 bfd_size_type locsymcount;
2794 Elf_Internal_Shdr *symtab_hdr;
2797 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2800 for (s = ibfd->sections; s != NULL; s = s->next)
2802 struct ppc_dyn_relocs *p;
2804 for (p = *((struct ppc_dyn_relocs **)
2805 &elf_section_data (s)->local_dynrel);
2809 if (!bfd_is_abs_section (p->sec)
2810 && bfd_is_abs_section (p->sec->output_section))
2812 /* Input section has been discarded, either because
2813 it is a copy of a linkonce section or due to
2814 linker script /DISCARD/, so we'll be discarding
2819 srel = elf_section_data (p->sec)->sreloc;
2820 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
2825 local_got = elf_local_got_refcounts (ibfd);
2829 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2830 locsymcount = symtab_hdr->sh_info;
2831 end_local_got = local_got + locsymcount;
2833 srel = htab->srelgot;
2834 for (; local_got < end_local_got; ++local_got)
2838 *local_got = s->_raw_size;
2841 srel->_raw_size += sizeof (Elf64_External_Rela);
2844 *local_got = (bfd_vma) -1;
2848 /* Allocate global sym .plt and .got entries, and space for global
2849 sym dynamic relocs. */
2850 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2852 /* We now have determined the sizes of the various dynamic sections.
2853 Allocate memory for them. */
2855 for (s = dynobj->sections; s != NULL; s = s->next)
2859 if ((s->flags & SEC_LINKER_CREATED) == 0)
2865 || s == htab->sglink)
2867 /* Strip this section if we don't need it; see the
2870 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2872 if (s->_raw_size == 0)
2874 /* If we don't need this section, strip it from the
2875 output file. This is mostly to handle .rela.bss and
2876 .rela.plt. We must create both sections in
2877 create_dynamic_sections, because they must be created
2878 before the linker maps input sections to output
2879 sections. The linker does that before
2880 adjust_dynamic_symbol is called, and it is that
2881 function which decides whether anything needs to go
2882 into these sections. */
2886 if (s != htab->srelplt)
2889 /* We use the reloc_count field as a counter if we need
2890 to copy relocs into the output file. */
2896 /* It's not one of our sections, so don't allocate space. */
2900 if (s->_raw_size == 0)
2902 _bfd_strip_section_from_output (info, s);
2906 /* Allocate memory for the section contents. We use bfd_zalloc
2907 here in case unused entries are not reclaimed before the
2908 section's contents are written out. This should not happen,
2909 but this way if it does, we get a R_PPC64_NONE reloc instead
2911 size = s->_raw_size;
2912 if (s == htab->sstub)
2914 /* .stub may grow. Allocate enough for the maximum growth. */
2915 size += (size + 65536 + 65535) / 65536 * 4;
2917 s->contents = (bfd_byte *) bfd_zalloc (dynobj, size);
2918 if (s->contents == NULL)
2922 if (elf_hash_table (info)->dynamic_sections_created)
2924 /* Add some entries to the .dynamic section. We fill in the
2925 values later, in ppc64_elf_finish_dynamic_sections, but we
2926 must add the entries now so that we get the correct size for
2927 the .dynamic section. The DT_DEBUG entry is filled in by the
2928 dynamic linker and used by the debugger. */
2929 #define add_dynamic_entry(TAG, VAL) \
2930 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2934 if (!add_dynamic_entry (DT_DEBUG, 0))
2938 if (htab->splt->_raw_size != 0)
2940 if (!add_dynamic_entry (DT_PLTGOT, 0)
2941 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2942 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2943 || !add_dynamic_entry (DT_JMPREL, 0)
2944 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
2950 if (!add_dynamic_entry (DT_RELA, 0)
2951 || !add_dynamic_entry (DT_RELASZ, 0)
2952 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
2955 /* If any dynamic relocs apply to a read-only section,
2956 then we need a DT_TEXTREL entry. */
2957 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
2959 if ((info->flags & DF_TEXTREL) != 0)
2961 if (!add_dynamic_entry (DT_TEXTREL, 0))
2966 #undef add_dynamic_entry
2971 /* Called after we have seen all the input files/sections, but before
2972 final symbol resolution and section placement has been determined.
2974 We use this hook to provide a value for TOCstart, which we store in
2975 the output bfd elf_gp. */
2978 ppc64_elf_set_toc (obfd, info)
2980 struct bfd_link_info *info;
2982 if (!info->relocateable)
2987 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
2988 order. The TOC starts where the first of these sections starts. */
2989 s = bfd_get_section_by_name (obfd, ".got");
2991 s = bfd_get_section_by_name (obfd, ".toc");
2993 s = bfd_get_section_by_name (obfd, ".tocbss");
2995 s = bfd_get_section_by_name (obfd, ".plt");
2998 /* This may happen for
2999 o references to TOC base (SYM@toc / TOC[tc0]) without a
3002 o --gc-sections and empty TOC sections
3004 FIXME: Warn user? */
3006 /* Look for a likely section. We probably won't even be
3008 for (s = obfd->sections; s != NULL; s = s->next)
3009 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
3010 == (SEC_ALLOC | SEC_SMALL_DATA))
3013 for (s = obfd->sections; s != NULL; s = s->next)
3014 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
3015 == (SEC_ALLOC | SEC_SMALL_DATA))
3018 for (s = obfd->sections; s != NULL; s = s->next)
3019 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
3022 for (s = obfd->sections; s != NULL; s = s->next)
3023 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
3029 TOCstart = s->output_section->vma + s->output_offset;
3031 elf_gp (obfd) = TOCstart;
3036 /* PowerPC64 .plt entries are 24 bytes long, which doesn't divide
3037 evenly into 64k. Sometimes with a large enough .plt, we'll need to
3038 use offsets differing in the high 16 bits when accessing a .plt
3039 entry from a .plt call stub. This function adjusts the size of
3040 .stub to accommodate the extra stub instruction needed in such
3044 ppc64_elf_size_stubs (obfd, info, changed)
3046 struct bfd_link_info *info;
3049 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3050 bfd_vma plt_offset, next_64k;
3051 long base, num, extra;
3053 /* .plt and .stub should be both present, or both absent. */
3054 if ((htab->splt == NULL || htab->splt->_raw_size == 0)
3055 != (htab->sstub == NULL || htab->sstub->_raw_size == 0))
3058 /* If no .plt, then nothing to do. */
3059 if (htab->splt == NULL || htab->splt->_raw_size == 0)
3062 plt_offset = (htab->splt->output_section->vma
3063 + htab->splt->output_offset
3065 next_64k = (plt_offset + 65535) & -65536;
3067 /* If the .plt doesn't have any entries crossing a 64k boundary,
3068 then there is no need for bigger stubs. */
3069 if (next_64k <= plt_offset + htab->splt->_raw_size)
3072 /* OK, so we have at least one transition. Since .plt entries are
3073 24 bytes long, we'll strike it lucky every 3*64k, with the 64k
3074 boundary between .plt entries. */
3075 base = next_64k / 65536;
3076 num = (plt_offset + htab->splt->_raw_size - next_64k) / 65536;
3077 extra = (base % 3 + num + 1) * 2 / 3;
3079 /* Allow one extra instruction for each EXTRA. The change in .stub
3080 may change the location of .toc and .plt. .toc and .plt ought to
3081 move as a group, but someone might be playing with eg. .plt
3082 alignment, so don't allow .stub size to decrease. */
3083 if (htab->sstub->_cooked_size < htab->sstub->_raw_size + extra * 4)
3085 htab->sstub->_cooked_size = htab->sstub->_raw_size + extra * 4;
3091 /* Build a .plt call stub. */
3094 build_plt_stub (obfd, p, offset, glink)
3100 #define PPC_LO(v) ((v) & 0xffff)
3101 #define PPC_HI(v) (((v) >> 16) & 0xffff)
3102 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
3105 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
3106 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
3108 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
3109 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3110 if (PPC_HA (offset + 8) != PPC_HA (offset))
3111 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3113 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
3114 if (PPC_HA (offset + 8) != PPC_HA (offset))
3115 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3117 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
3118 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3119 bfd_put_32 (obfd, BCTR, p), p += 4;
3123 /* Build the stubs for one function call. */
3126 build_one_stub (h, inf)
3127 struct elf_link_hash_entry *h;
3130 struct bfd_link_info *info;
3131 struct ppc_link_hash_table *htab;
3133 if (h->root.type == bfd_link_hash_indirect
3134 || h->root.type == bfd_link_hash_warning)
3137 info = (struct bfd_link_info *) inf;
3138 htab = ppc_hash_table (info);
3140 if (htab->elf.dynamic_sections_created
3141 && h->plt.offset != (bfd_vma) -1)
3148 /* Point the function at the linkage stub. This works because
3149 the only references to the function code sym are calls.
3150 Function pointer comparisons use the function descriptor. */
3152 h->root.type = bfd_link_hash_defined;
3153 h->root.u.def.section = s;
3154 h->root.u.def.value = s->_cooked_size;
3156 /* Build the .plt call stub. */
3157 plt_r2 = (htab->splt->output_section->vma
3158 + htab->splt->output_offset
3160 - elf_gp (htab->splt->output_section->owner)
3163 if (plt_r2 + 0x80000000 > 0xffffffff)
3165 (*_bfd_error_handler)
3166 (_("linkage table overflow against `%s'"),
3167 h->root.root.string);
3168 bfd_set_error (bfd_error_bad_value);
3169 htab->plt_overflow = true;
3172 p = s->contents + s->_cooked_size;
3173 p = build_plt_stub (s->owner, p, (int) plt_r2, 0);
3174 s->_cooked_size = p - s->contents;
3176 /* Build the .glink lazy link call stub. */
3178 p = s->contents + s->_cooked_size;
3179 indx = s->reloc_count;
3182 bfd_put_32 (s->owner, LI_R0_0 | indx, p);
3187 bfd_put_32 (s->owner, LIS_R0_0 | PPC_HI (indx), p);
3189 bfd_put_32 (s->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
3192 bfd_put_32 (s->owner, B_DOT | ((s->contents - p) & 0x3fffffc), p);
3194 s->_cooked_size = p - s->contents;
3195 s->reloc_count += 1;
3201 ppc64_elf_build_stubs (obfd, info)
3203 struct bfd_link_info *info;
3205 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3206 bfd_vma old_stub_size;
3210 /* If no .plt stubs, then nothing to do. */
3211 if (htab->sstub == NULL || htab->sstub->_raw_size == 0)
3214 old_stub_size = htab->sstub->_cooked_size;
3215 htab->sstub->_cooked_size = 0;
3217 /* Build the .glink plt call stub. */
3218 plt_r2 = (htab->splt->output_section->vma
3219 + htab->splt->output_offset
3222 p = htab->sglink->contents;
3223 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
3224 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
3226 bfd_put_32 (htab->sglink->owner, NOP, p);
3229 htab->sglink->_cooked_size = p - htab->sglink->contents;
3231 /* Use reloc_count to count entries. */
3232 htab->sglink->reloc_count = 0;
3234 elf_link_hash_traverse (&htab->elf, build_one_stub, (PTR) info);
3235 htab->sglink->reloc_count = 0;
3237 if (htab->plt_overflow)
3240 if (old_stub_size != htab->sstub->_cooked_size
3241 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
3243 (*_bfd_error_handler)
3244 (_("stub section size doesn't match calculated size"));
3245 bfd_set_error (bfd_error_bad_value);
3251 /* Set up any other section flags and such that may be necessary. */
3254 ppc64_elf_fake_sections (abfd, shdr, asect)
3255 bfd *abfd ATTRIBUTE_UNUSED;
3256 Elf64_Internal_Shdr *shdr;
3259 if ((asect->flags & SEC_EXCLUDE) != 0)
3260 shdr->sh_flags |= SHF_EXCLUDE;
3262 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
3263 shdr->sh_type = SHT_ORDERED;
3268 /* The RELOCATE_SECTION function is called by the ELF backend linker
3269 to handle the relocations for a section.
3271 The relocs are always passed as Rela structures; if the section
3272 actually uses Rel structures, the r_addend field will always be
3275 This function is responsible for adjust the section contents as
3276 necessary, and (if using Rela relocs and generating a
3277 relocateable output file) adjusting the reloc addend as
3280 This function does not have to worry about setting the reloc
3281 address or the reloc symbol index.
3283 LOCAL_SYMS is a pointer to the swapped in local symbols.
3285 LOCAL_SECTIONS is an array giving the section in the input file
3286 corresponding to the st_shndx field of each local symbol.
3288 The global hash table entry for the global symbols can be found
3289 via elf_sym_hashes (input_bfd).
3291 When generating relocateable output, this function must handle
3292 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3293 going to be the section symbol corresponding to the output
3294 section, which means that the addend must be adjusted
3298 ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
3299 contents, relocs, local_syms, local_sections)
3301 struct bfd_link_info *info;
3303 asection *input_section;
3305 Elf_Internal_Rela *relocs;
3306 Elf_Internal_Sym *local_syms;
3307 asection **local_sections;
3309 struct ppc_link_hash_table *htab;
3310 Elf_Internal_Shdr *symtab_hdr;
3311 struct elf_link_hash_entry **sym_hashes;
3312 Elf_Internal_Rela *rel;
3313 Elf_Internal_Rela *relend;
3314 bfd_vma *local_got_offsets;
3318 /* Initialize howto table if needed. */
3319 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
3322 htab = ppc_hash_table (info);
3323 local_got_offsets = elf_local_got_offsets (input_bfd);
3324 TOCstart = elf_gp (output_bfd);
3325 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3326 sym_hashes = elf_sym_hashes (input_bfd);
3329 relend = relocs + input_section->reloc_count;
3330 for (; rel < relend; rel++)
3332 enum elf_ppc_reloc_type r_type;
3335 bfd_reloc_status_type r;
3336 Elf_Internal_Sym *sym;
3338 struct elf_link_hash_entry *h;
3339 const char *sym_name;
3340 unsigned long r_symndx;
3342 boolean unresolved_reloc;
3345 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3346 r_symndx = ELF64_R_SYM (rel->r_info);
3348 if (info->relocateable)
3350 /* This is a relocatable link. We don't have to change
3351 anything, unless the reloc is against a section symbol,
3352 in which case we have to adjust according to where the
3353 section symbol winds up in the output section. */
3354 if (r_symndx < symtab_hdr->sh_info)
3356 sym = local_syms + r_symndx;
3357 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3359 sec = local_sections[r_symndx];
3360 rel->r_addend += sec->output_offset + sym->st_value;
3366 /* This is a final link. */
3368 offset = rel->r_offset;
3369 addend = rel->r_addend;
3370 r = bfd_reloc_other;
3371 sym = (Elf_Internal_Sym *) 0;
3372 sec = (asection *) 0;
3373 h = (struct elf_link_hash_entry *) 0;
3374 sym_name = (const char *) 0;
3375 unresolved_reloc = false;
3377 if (r_type == R_PPC64_TOC)
3379 /* Relocation value is TOC base. Symbol is ignored. */
3380 relocation = TOCstart + TOC_BASE_OFF;
3382 else if (r_symndx < symtab_hdr->sh_info)
3384 /* It's a local symbol. */
3385 sym = local_syms + r_symndx;
3386 sec = local_sections[r_symndx];
3387 sym_name = "<local symbol>";
3389 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
3390 addend = rel->r_addend;
3394 /* It's a global symbol. */
3395 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3396 while (h->root.type == bfd_link_hash_indirect
3397 || h->root.type == bfd_link_hash_warning)
3398 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3399 sym_name = h->root.root.string;
3401 if (h->root.type == bfd_link_hash_defined
3402 || h->root.type == bfd_link_hash_defweak)
3404 sec = h->root.u.def.section;
3405 if (sec->output_section == NULL)
3406 /* Set a flag that will be cleared later if we find a
3407 relocation value for this symbol. output_section
3408 is typically NULL for symbols satisfied by a shared
3410 unresolved_reloc = true;
3412 relocation = (h->root.u.def.value
3413 + sec->output_section->vma
3414 + sec->output_offset);
3416 else if (h->root.type == bfd_link_hash_undefweak)
3418 else if (info->shared
3419 && (!info->symbolic || info->allow_shlib_undefined)
3420 && !info->no_undefined
3421 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3425 if (! ((*info->callbacks->undefined_symbol)
3426 (info, h->root.root.string, input_bfd, input_section,
3427 offset, (!info->shared
3428 || info->no_undefined
3429 || ELF_ST_VISIBILITY (h->other)))))
3435 /* First handle relocations that tweak non-addend part of insn. */
3442 /* Branch taken prediction relocations. */
3443 case R_PPC64_ADDR14_BRTAKEN:
3444 case R_PPC64_REL14_BRTAKEN:
3445 insn = 0x01 << 21; /* Set 't' bit, lowest bit of BO field. */
3448 /* Branch not taken prediction relocations. */
3449 case R_PPC64_ADDR14_BRNTAKEN:
3450 case R_PPC64_REL14_BRNTAKEN:
3451 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
3452 /* Set 'a' bit. This is 0b00010 in BO field for branch on CR(BI)
3453 insns (BO == 001at or 011at), and 0b01000 for branch on CTR
3454 insns (BO == 1a00t or 1a01t). */
3455 if ((insn & (0x14 << 21)) == (0x04 << 21))
3457 else if ((insn & (0x14 << 21)) == (0x10 << 21))
3462 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3466 case R_PPC64_ADDR24:
3467 /* An ADDR24 or REL24 branching to a linkage function may be
3468 followed by a nop that we have to replace with a ld in
3469 order to restore the TOC base pointer. Only calls to
3470 shared objects need to alter the TOC base. These are
3471 recognized by their need for a PLT entry. */
3473 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
3474 /* Make sure that there really is an instruction after
3475 the branch that we can decode. */
3476 && offset + 8 <= input_section->_cooked_size)
3480 pnext = contents + offset + 4;
3481 insn = bfd_get_32 (input_bfd, pnext);
3483 if (insn == 0x60000000 /* nop (ori r0,r0,0) */
3484 || insn == 0x4def7b82 /* cror 15,15,15 */
3485 || insn == 0x4ffffb82) /* cror 31,31,31 */
3487 bfd_put_32 (input_bfd,
3488 (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
3499 (*_bfd_error_handler)
3500 (_("%s: unknown relocation type %d for symbol %s"),
3501 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
3503 bfd_set_error (bfd_error_bad_value);
3508 case R_PPC_GNU_VTINHERIT:
3509 case R_PPC_GNU_VTENTRY:
3512 /* GOT16 relocations. Like an ADDR16 using the symbol's
3513 address in the GOT as relocation value instead of the
3514 symbols value itself. Also, create a GOT entry for the
3515 symbol and put the symbol value there. */
3517 case R_PPC64_GOT16_LO:
3518 case R_PPC64_GOT16_HI:
3519 case R_PPC64_GOT16_HA:
3520 case R_PPC64_GOT16_DS:
3521 case R_PPC64_GOT16_LO_DS:
3523 /* Relocation is to the entry for this symbol in the global
3527 if (htab->sgot == NULL)
3534 off = h->got.offset;
3535 dyn = htab->elf.dynamic_sections_created;
3536 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
3540 || (h->elf_link_hash_flags
3541 & ELF_LINK_FORCED_LOCAL))
3542 && (h->elf_link_hash_flags
3543 & ELF_LINK_HASH_DEF_REGULAR)))
3545 /* This is actually a static link, or it is a
3546 -Bsymbolic link and the symbol is defined
3547 locally, or the symbol was forced to be local
3548 because of a version file. We must initialize
3549 this entry in the global offset table. Since the
3550 offset must always be a multiple of 8, we use the
3551 least significant bit to record whether we have
3552 initialized it already.
3554 When doing a dynamic link, we create a .rel.got
3555 relocation entry to initialize the value. This
3556 is done in the finish_dynamic_symbol routine. */
3561 bfd_put_64 (output_bfd, relocation,
3562 htab->sgot->contents + off);
3567 unresolved_reloc = false;
3571 if (local_got_offsets == NULL)
3574 off = local_got_offsets[r_symndx];
3576 /* The offset must always be a multiple of 8. We use
3577 the least significant bit to record whether we have
3578 already processed this entry. */
3583 bfd_put_64 (output_bfd, relocation,
3584 htab->sgot->contents + off);
3588 Elf_Internal_Rela outrel;
3589 Elf64_External_Rela *loc;
3591 /* We need to generate a R_PPC64_RELATIVE reloc
3592 for the dynamic linker. */
3593 outrel.r_offset = (htab->sgot->output_section->vma
3594 + htab->sgot->output_offset
3596 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3597 outrel.r_addend = relocation;
3598 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3599 loc += htab->srelgot->reloc_count++;
3600 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3603 local_got_offsets[r_symndx] |= 1;
3607 if (off >= (bfd_vma) -2)
3610 relocation = htab->sgot->output_offset + off;
3612 /* TOC base (r2) is TOC start plus 0x8000. */
3613 addend -= TOC_BASE_OFF;
3617 case R_PPC64_PLT16_HA:
3618 case R_PPC64_PLT16_HI:
3619 case R_PPC64_PLT16_LO:
3622 /* Relocation is to the entry for this symbol in the
3623 procedure linkage table. */
3625 /* Resolve a PLT reloc against a local symbol directly,
3626 without using the procedure linkage table. */
3630 if (h->plt.offset == (bfd_vma) -1
3631 || htab->splt == NULL)
3633 /* We didn't make a PLT entry for this symbol. This
3634 happens when statically linking PIC code, or when
3635 using -Bsymbolic. */
3639 relocation = (htab->splt->output_section->vma
3640 + htab->splt->output_offset
3642 unresolved_reloc = false;
3645 /* TOC16 relocs. We want the offset relative to the TOC base,
3646 which is the address of the start of the TOC plus 0x8000.
3647 The TOC consists of sections .got, .toc, .tocbss, and .plt,
3650 case R_PPC64_TOC16_LO:
3651 case R_PPC64_TOC16_HI:
3652 case R_PPC64_TOC16_DS:
3653 case R_PPC64_TOC16_LO_DS:
3654 case R_PPC64_TOC16_HA:
3655 addend -= TOCstart + TOC_BASE_OFF;
3658 /* Relocate against the beginning of the section. */
3659 case R_PPC64_SECTOFF:
3660 case R_PPC64_SECTOFF_LO:
3661 case R_PPC64_SECTOFF_HI:
3662 case R_PPC64_SECTOFF_DS:
3663 case R_PPC64_SECTOFF_LO_DS:
3664 case R_PPC64_SECTOFF_HA:
3665 if (sec != (asection *) 0)
3666 addend -= sec->output_section->vma;
3672 /* Relocations that may need to be propagated if this is a
3675 case R_PPC64_REL14_BRNTAKEN:
3676 case R_PPC64_REL14_BRTAKEN:
3679 case R_PPC64_ADDR14:
3680 case R_PPC64_ADDR14_BRNTAKEN:
3681 case R_PPC64_ADDR14_BRTAKEN:
3682 case R_PPC64_ADDR16:
3683 case R_PPC64_ADDR16_DS:
3684 case R_PPC64_ADDR16_HA:
3685 case R_PPC64_ADDR16_HI:
3686 case R_PPC64_ADDR16_HIGHER:
3687 case R_PPC64_ADDR16_HIGHERA:
3688 case R_PPC64_ADDR16_HIGHEST:
3689 case R_PPC64_ADDR16_HIGHESTA:
3690 case R_PPC64_ADDR16_LO:
3691 case R_PPC64_ADDR16_LO_DS:
3692 case R_PPC64_ADDR24:
3693 case R_PPC64_ADDR30:
3694 case R_PPC64_ADDR32:
3695 case R_PPC64_ADDR64:
3696 case R_PPC64_UADDR16:
3697 case R_PPC64_UADDR32:
3698 case R_PPC64_UADDR64:
3699 /* r_symndx will be zero only for relocs against symbols
3700 from removed linkonce sections, or sections discarded by
3707 if ((input_section->flags & SEC_ALLOC) == 0)
3711 && (IS_ABSOLUTE_RELOC (r_type)
3714 && (! info->symbolic
3715 || (h->elf_link_hash_flags
3716 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3720 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3721 && (((h->elf_link_hash_flags
3722 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3723 && (h->elf_link_hash_flags
3724 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3725 || h->root.type == bfd_link_hash_undefweak
3726 || h->root.type == bfd_link_hash_undefined)))
3728 Elf_Internal_Rela outrel;
3729 boolean skip, relocate;
3731 Elf64_External_Rela *loc;
3734 if (strcmp (bfd_get_section_name (output_bfd, input_section),
3739 /* When generating a dynamic object, these relocations
3740 are copied into the output file to be resolved at run
3746 _bfd_elf_section_offset (output_bfd, info, input_section,
3748 if (outrel.r_offset == (bfd_vma) -1)
3751 outrel.r_offset += (input_section->output_section->vma
3752 + input_section->output_offset);
3753 outrel.r_addend = addend;
3758 memset (&outrel, 0, sizeof outrel);
3762 && (!IS_ABSOLUTE_RELOC (r_type)
3765 || (h->elf_link_hash_flags
3766 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3769 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
3773 /* This symbol is local, or marked to become local. */
3774 outrel.r_addend += relocation;
3776 if (r_type == R_PPC64_ADDR64)
3778 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3784 if (r_type == R_PPC64_TOC || bfd_is_abs_section (sec))
3786 else if (sec == NULL || sec->owner == NULL)
3788 bfd_set_error (bfd_error_bad_value);
3795 osec = sec->output_section;
3796 indx = elf_section_data (osec)->dynindx;
3798 /* We are turning this relocation into one
3799 against a section symbol, so subtract out
3800 the output section's address but not the
3801 offset of the input section in the output
3803 outrel.r_addend -= osec->vma;
3806 outrel.r_info = ELF64_R_INFO (indx, r_type);
3810 sreloc = elf_section_data (input_section)->sreloc;
3814 loc = (Elf64_External_Rela *) sreloc->contents;
3815 loc += sreloc->reloc_count++;
3816 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3818 /* If this reloc is against an external symbol, it will
3819 be computed at runtime, so there's no need to do
3827 case R_PPC64_GLOB_DAT:
3828 case R_PPC64_JMP_SLOT:
3829 case R_PPC64_RELATIVE:
3830 /* We shouldn't ever see these dynamic relocs in relocatable
3834 case R_PPC64_PLTGOT16:
3835 case R_PPC64_PLTGOT16_DS:
3836 case R_PPC64_PLTGOT16_HA:
3837 case R_PPC64_PLTGOT16_HI:
3838 case R_PPC64_PLTGOT16_LO:
3839 case R_PPC64_PLTGOT16_LO_DS:
3840 case R_PPC64_PLTREL32:
3841 case R_PPC64_PLTREL64:
3842 /* These ones haven't been implemented yet. */
3844 (*_bfd_error_handler)
3845 (_("%s: Relocation %s is not supported for symbol %s."),
3846 bfd_archive_filename (input_bfd),
3847 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
3849 bfd_set_error (bfd_error_invalid_operation);
3854 /* Do any further special processing. */
3860 case R_PPC64_ADDR16_HA:
3861 case R_PPC64_ADDR16_HIGHERA:
3862 case R_PPC64_ADDR16_HIGHESTA:
3863 case R_PPC64_PLT16_HA:
3864 case R_PPC64_TOC16_HA:
3865 case R_PPC64_SECTOFF_HA:
3866 /* It's just possible that this symbol is a weak symbol
3867 that's not actually defined anywhere. In that case,
3868 'sec' would be NULL, and we should leave the symbol
3869 alone (it will be set to zero elsewhere in the link). */
3871 /* Add 0x10000 if sign bit in 0:15 is set. */
3872 addend += ((relocation + addend) & 0x8000) << 1;
3875 case R_PPC64_ADDR16_DS:
3876 case R_PPC64_ADDR16_LO_DS:
3877 case R_PPC64_GOT16_DS:
3878 case R_PPC64_GOT16_LO_DS:
3879 case R_PPC64_PLT16_LO_DS:
3880 case R_PPC64_SECTOFF_DS:
3881 case R_PPC64_SECTOFF_LO_DS:
3882 case R_PPC64_TOC16_DS:
3883 case R_PPC64_TOC16_LO_DS:
3884 case R_PPC64_PLTGOT16_DS:
3885 case R_PPC64_PLTGOT16_LO_DS:
3886 if (((relocation + addend) & 3) != 0)
3888 (*_bfd_error_handler)
3889 (_("%s: error: relocation %s not a multiple of 4"),
3890 bfd_archive_filename (input_bfd),
3891 ppc64_elf_howto_table[(int) r_type]->name);
3892 bfd_set_error (bfd_error_bad_value);
3899 /* FIXME: Why do we allow debugging sections to escape this error?
3900 More importantly, why do we not emit dynamic relocs above in
3901 debugging sections (which are ! SEC_ALLOC)? If we had
3902 emitted the dynamic reloc, we could remove the fudge here. */
3903 if (unresolved_reloc
3905 && (input_section->flags & SEC_DEBUGGING) != 0
3906 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3907 (*_bfd_error_handler)
3908 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3909 bfd_archive_filename (input_bfd),
3910 bfd_get_section_name (input_bfd, input_section),
3911 (long) rel->r_offset,
3912 h->root.root.string);
3914 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
3922 if (r == bfd_reloc_ok)
3924 else if (r == bfd_reloc_overflow)
3930 if (h->root.type == bfd_link_hash_undefweak
3931 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
3933 /* Assume this is a call protected by other code that
3934 detects the symbol is undefined. If this is the case,
3935 we can safely ignore the overflow. If not, the
3936 program is hosed anyway, and a little warning isn't
3942 name = h->root.root.string;
3946 name = bfd_elf_string_from_elf_section (input_bfd,
3947 symtab_hdr->sh_link,
3952 name = bfd_section_name (input_bfd, sec);
3955 if (! ((*info->callbacks->reloc_overflow)
3956 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
3957 (bfd_vma) 0, input_bfd, input_section, offset)))
3967 /* Finish up dynamic symbol handling. We set the contents of various
3968 dynamic sections here. */
3971 ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
3973 struct bfd_link_info *info;
3974 struct elf_link_hash_entry *h;
3975 Elf_Internal_Sym *sym;
3977 struct ppc_link_hash_table *htab;
3980 htab = ppc_hash_table (info);
3981 dynobj = htab->elf.dynobj;
3983 if (h->plt.offset != (bfd_vma) -1)
3985 struct elf_link_hash_entry *funcdesc_h;
3986 Elf_Internal_Rela rela;
3987 Elf64_External_Rela *loc;
3989 /* This symbol has an entry in the procedure linkage table. Set
3992 if (htab->splt == NULL
3993 || htab->srelplt == NULL
3994 || htab->sglink == NULL
3995 || h->root.root.string[0] != '.'
3996 || h->root.root.string[1] == '\0')
3999 /* Find its corresponding function descriptor.
4000 ppc64_elf_adjust_dynamic_symbol has already set it up for us. */
4002 funcdesc_h = elf_link_hash_lookup (elf_hash_table (info),
4003 h->root.root.string + 1,
4004 false, false, false);
4006 if (funcdesc_h == NULL || funcdesc_h->dynindx == -1)
4009 /* Create a JMP_SLOT reloc to inform the dynamic linker to
4010 fill in the PLT entry. */
4012 rela.r_offset = (htab->splt->output_section->vma
4013 + htab->splt->output_offset
4015 rela.r_info = ELF64_R_INFO (funcdesc_h->dynindx, R_PPC64_JMP_SLOT);
4018 loc = (Elf64_External_Rela *) htab->srelplt->contents;
4019 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4020 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
4023 if (h->got.offset != (bfd_vma) -1)
4025 Elf_Internal_Rela rela;
4026 Elf64_External_Rela *loc;
4028 /* This symbol has an entry in the global offset table. Set it
4031 if (htab->sgot == NULL || htab->srelgot == NULL)
4034 rela.r_offset = (htab->sgot->output_section->vma
4035 + htab->sgot->output_offset
4036 + (h->got.offset &~ (bfd_vma) 1));
4038 /* If this is a static link, or it is a -Bsymbolic link and the
4039 symbol is defined locally or was forced to be local because
4040 of a version file, we just want to emit a RELATIVE reloc.
4041 The entry in the global offset table will already have been
4042 initialized in the relocate_section function. */
4046 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
4047 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4049 BFD_ASSERT((h->got.offset & 1) != 0);
4050 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4051 rela.r_addend = (h->root.u.def.value
4052 + h->root.u.def.section->output_section->vma
4053 + h->root.u.def.section->output_offset);
4057 BFD_ASSERT ((h->got.offset & 1) == 0);
4058 bfd_put_64 (output_bfd, (bfd_vma) 0,
4059 htab->sgot->contents + h->got.offset);
4060 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
4064 loc = (Elf64_External_Rela *) htab->srelgot->contents;
4065 loc += htab->srelgot->reloc_count++;
4066 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
4069 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4071 Elf_Internal_Rela rela;
4072 Elf64_External_Rela *loc;
4074 /* This symbol needs a copy reloc. Set it up. */
4076 if (h->dynindx == -1
4077 || (h->root.type != bfd_link_hash_defined
4078 && h->root.type != bfd_link_hash_defweak)
4079 || htab->srelbss == NULL)
4082 rela.r_offset = (h->root.u.def.value
4083 + h->root.u.def.section->output_section->vma
4084 + h->root.u.def.section->output_offset);
4085 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
4087 loc = (Elf64_External_Rela *) htab->srelbss->contents;
4088 loc += htab->srelbss->reloc_count++;
4089 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
4092 /* Mark some specially defined symbols as absolute. */
4093 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
4094 sym->st_shndx = SHN_ABS;
4099 /* Used to decide how to sort relocs in an optimal manner for the
4100 dynamic linker, before writing them out. */
4102 static enum elf_reloc_type_class
4103 ppc64_elf_reloc_type_class (rela)
4104 const Elf_Internal_Rela *rela;
4106 enum elf_ppc_reloc_type r_type;
4108 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
4111 case R_PPC64_RELATIVE:
4112 return reloc_class_relative;
4113 case R_PPC64_JMP_SLOT:
4114 return reloc_class_plt;
4116 return reloc_class_copy;
4118 return reloc_class_normal;
4122 /* Finish up the dynamic sections. */
4125 ppc64_elf_finish_dynamic_sections (output_bfd, info)
4127 struct bfd_link_info *info;
4129 struct ppc_link_hash_table *htab;
4133 htab = ppc_hash_table (info);
4134 dynobj = htab->elf.dynobj;
4135 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4137 if (htab->elf.dynamic_sections_created)
4139 Elf64_External_Dyn *dyncon, *dynconend;
4141 if (sdyn == NULL || htab->sgot == NULL)
4144 dyncon = (Elf64_External_Dyn *) sdyn->contents;
4145 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4146 for (; dyncon < dynconend; dyncon++)
4148 Elf_Internal_Dyn dyn;
4150 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4157 case DT_PPC64_GLINK:
4158 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
4159 + htab->sglink->output_offset);
4163 dyn.d_un.d_ptr = (htab->splt->output_section->vma
4164 + htab->splt->output_offset);
4168 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
4169 + htab->srelplt->output_offset);
4173 dyn.d_un.d_val = htab->srelplt->_raw_size;
4177 /* Don't count procedure linkage table relocs in the
4178 overall reloc count. */
4179 if (htab->srelplt != NULL)
4180 dyn.d_un.d_val -= htab->srelplt->_raw_size;
4184 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
4188 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
4190 /* Fill in the first entry in the global offset table.
4191 We use it to hold the link-time TOCbase. */
4192 bfd_put_64 (output_bfd,
4193 elf_gp (output_bfd) - TOC_BASE_OFF,
4194 htab->sgot->contents);
4196 /* Set .got entry size. */
4197 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
4200 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4202 /* Set .plt entry size. */
4203 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
4210 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
4211 #define TARGET_LITTLE_NAME "elf64-powerpcle"
4212 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
4213 #define TARGET_BIG_NAME "elf64-powerpc"
4214 #define ELF_ARCH bfd_arch_powerpc
4215 #define ELF_MACHINE_CODE EM_PPC64
4216 #define ELF_MAXPAGESIZE 0x10000
4217 #define elf_info_to_howto ppc64_elf_info_to_howto
4219 #ifdef EM_CYGNUS_POWERPC
4220 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
4224 #define ELF_MACHINE_ALT2 EM_PPC_OLD
4227 #define elf_backend_want_got_sym 0
4228 #define elf_backend_want_plt_sym 0
4229 #define elf_backend_plt_alignment 3
4230 #define elf_backend_plt_not_loaded 1
4231 #define elf_backend_got_symbol_offset 0
4232 #define elf_backend_got_header_size 8
4233 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
4234 #define elf_backend_can_gc_sections 1
4235 #define elf_backend_can_refcount 1
4237 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
4238 #define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
4239 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
4240 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
4242 #define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
4243 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
4244 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
4245 #define elf_backend_check_relocs ppc64_elf_check_relocs
4246 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
4247 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
4248 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
4249 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
4250 #define elf_backend_fake_sections ppc64_elf_fake_sections
4251 #define elf_backend_relocate_section ppc64_elf_relocate_section
4252 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
4253 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
4254 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
4256 #include "elf64-target.h"
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