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* elf32-hppa.c (elf32_hppa_copy_indirect_symbol): Merge dyn_reloc
[binutils.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169
AM		 1/* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <[email protected]>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22/* This file is based on the 64-bit PowerPC ELF ABI. It is also based
23 on the file elf32-ppc.c. */
24
25#include "bfd.h"
26#include "sysdep.h"
27#include "bfdlink.h"
28#include "libbfd.h"
29#include "elf-bfd.h"
30#include "elf/ppc.h"
31
32#define USE_RELA /* we want RELA relocations, not REL. */
33
34
35static void ppc_howto_init
36 PARAMS ((void));
37static reloc_howto_type *ppc64_elf_reloc_type_lookup
38 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
39static void ppc64_elf_info_to_howto
40 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
41static bfd_reloc_status_type ppc64_elf_addr16_ha_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43static boolean ppc64_elf_set_private_flags
44 PARAMS ((bfd *, flagword));
45static boolean ppc64_elf_copy_private_bfd_data
46 PARAMS ((bfd *, bfd *));
47static boolean ppc64_elf_merge_private_bfd_data
48 PARAMS ((bfd *, bfd *));
49static boolean ppc64_elf_section_from_shdr
50 PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
65f38f15
AM		 51static struct bfd_hash_entry *link_hash_newfunc
52 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
53static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
54 PARAMS ((bfd *));
55static boolean create_got_section
56 PARAMS ((bfd *, struct bfd_link_info *));
5bd4f169
AM		 57static boolean ppc64_elf_create_dynamic_sections
58 PARAMS ((bfd *, struct bfd_link_info *));
65f38f15
AM		 59static void ppc64_elf_copy_indirect_symbol
60 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
5bd4f169
AM		 61static boolean ppc64_elf_check_relocs
62 PARAMS ((bfd *, struct bfd_link_info *, asection *,
63 const Elf_Internal_Rela *));
64static asection * ppc64_elf_gc_mark_hook
65 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
66 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
67static boolean ppc64_elf_gc_sweep_hook
68 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
69 const Elf_Internal_Rela *relocs));
70static boolean ppc64_elf_adjust_dynamic_symbol
71 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
65f38f15
AM		 72static boolean allocate_dynrelocs
73 PARAMS ((struct elf_link_hash_entry *, PTR));
74static boolean readonly_dynrelocs
5bd4f169 75 PARAMS ((struct elf_link_hash_entry *, PTR));
65f38f15
AM		 76static enum elf_reloc_type_class ppc64_elf_reloc_type_class
77 PARAMS ((const Elf_Internal_Rela *));
5bd4f169
AM		 78static boolean ppc64_elf_size_dynamic_sections
79 PARAMS ((bfd *, struct bfd_link_info *));
80static boolean ppc64_elf_final_link
81 PARAMS ((bfd *, struct bfd_link_info *));
82static boolean ppc64_elf_fake_sections
83 PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
84static boolean ppc64_elf_relocate_section
85 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
86 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
87 asection **));
88static boolean ppc64_elf_finish_dynamic_symbol
89 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
90 Elf_Internal_Sym *));
91static boolean ppc64_elf_finish_dynamic_sections
92 PARAMS ((bfd *, struct bfd_link_info *));
93
94
95/* Branch prediction bit for branch taken relocs. */
96#define BRANCH_PREDICT_BIT 0x200000
97
98/* Mask to set RA in memory instructions. */
99#define RA_REGISTER_MASK 0x001f0000
100
101/* Value to shift register by to insert RA. */
102#define RA_REGISTER_SHIFT 16
103
104/* The name of the dynamic interpreter. This is put in the .interp
105 section. */
106#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
107
108/* The size in bytes of an entry in the procedure linkage table. */
109#define PLT_ENTRY_SIZE 24
110
111/* The initial size of the plt reserved for the dynamic linker. */
112#define PLT_INITIAL_ENTRY_SIZE 96
113
114/* TOC base pointers offset from start of TOC. */
115#define TOC_BASE_OFF (0x8000)
116
117/* Global linkage stub. The first instruction has its offset patched. */
118/* FIXME: Need traceback table? */
119static const unsigned int ppc64_elf_glink_code[] = {
120 0xe9820000, /* ld %r12,0(%r2) */
121 0xf8410028, /* std %r2,40(%r1) */
122 0xe80c0000, /* ld %r0,0(%r12) */
123 0xe84c0008, /* ld %r2,8(%r12) */
124 0x7c0903a6, /* mtctr %r0 */
125 0x4e800420 /* bctr */
126};
127
128#define PPC64_ELF_GLINK_SIZE \
129 ((sizeof ppc64_elf_glink_code / sizeof ppc64_elf_glink_code[0]) * 4)
130\f
131/* Relocation HOWTO's. */
132static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
133
134static reloc_howto_type ppc64_elf_howto_raw[] = {
135 /* This reloc does nothing. */
136 HOWTO (R_PPC64_NONE, /* type */
137 0, /* rightshift */
138 2, /* size (0 = byte, 1 = short, 2 = long) */
139 32, /* bitsize */
140 false, /* pc_relative */
141 0, /* bitpos */
142 complain_overflow_bitfield, /* complain_on_overflow */
143 bfd_elf_generic_reloc, /* special_function */
144 "R_PPC64_NONE", /* name */
145 false, /* partial_inplace */
146 0, /* src_mask */
147 0, /* dst_mask */
148 false), /* pcrel_offset */
149
150 /* A standard 32 bit relocation. */
151 HOWTO (R_PPC64_ADDR32, /* type */
152 0, /* rightshift */
153 2, /* size (0 = byte, 1 = short, 2 = long) */
154 32, /* bitsize */
155 false, /* pc_relative */
156 0, /* bitpos */
157 complain_overflow_bitfield, /* complain_on_overflow */
158 bfd_elf_generic_reloc, /* special_function */
159 "R_PPC64_ADDR32", /* name */
160 false, /* partial_inplace */
161 0, /* src_mask */
162 0xffffffff, /* dst_mask */
163 false), /* pcrel_offset */
164
165 /* An absolute 26 bit branch; the lower two bits must be zero.
166 FIXME: we don't check that, we just clear them. */
167 HOWTO (R_PPC64_ADDR24, /* type */
168 0, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 26, /* bitsize */
171 false, /* pc_relative */
172 0, /* bitpos */
173 complain_overflow_bitfield, /* complain_on_overflow */
174 bfd_elf_generic_reloc, /* special_function */
175 "R_PPC64_ADDR24", /* name */
176 false, /* partial_inplace */
177 0, /* src_mask */
178 0x3fffffc, /* dst_mask */
179 false), /* pcrel_offset */
180
181 /* A standard 16 bit relocation. */
182 HOWTO (R_PPC64_ADDR16, /* type */
183 0, /* rightshift */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
185 16, /* bitsize */
186 false, /* pc_relative */
187 0, /* bitpos */
188 complain_overflow_bitfield, /* complain_on_overflow */
189 bfd_elf_generic_reloc, /* special_function */
190 "R_PPC64_ADDR16", /* name */
191 false, /* partial_inplace */
192 0, /* src_mask */
193 0xffff, /* dst_mask */
194 false), /* pcrel_offset */
195
196 /* A 16 bit relocation without overflow. */
197 HOWTO (R_PPC64_ADDR16_LO, /* type */
198 0, /* rightshift */
199 1, /* size (0 = byte, 1 = short, 2 = long) */
200 16, /* bitsize */
201 false, /* pc_relative */
202 0, /* bitpos */
203 complain_overflow_dont,/* complain_on_overflow */
204 bfd_elf_generic_reloc, /* special_function */
205 "R_PPC64_ADDR16_LO", /* name */
206 false, /* partial_inplace */
207 0, /* src_mask */
208 0xffff, /* dst_mask */
209 false), /* pcrel_offset */
210
211 /* Bits 16-31 of an address. */
212 HOWTO (R_PPC64_ADDR16_HI, /* type */
213 16, /* rightshift */
214 1, /* size (0 = byte, 1 = short, 2 = long) */
215 16, /* bitsize */
216 false, /* pc_relative */
217 0, /* bitpos */
218 complain_overflow_dont, /* complain_on_overflow */
219 bfd_elf_generic_reloc, /* special_function */
220 "R_PPC64_ADDR16_HI", /* name */
221 false, /* partial_inplace */
222 0, /* src_mask */
223 0xffff, /* dst_mask */
224 false), /* pcrel_offset */
225
226 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
227 bits, treated as a signed number, is negative. */
228 HOWTO (R_PPC64_ADDR16_HA, /* type */
229 16, /* rightshift */
230 1, /* size (0 = byte, 1 = short, 2 = long) */
231 16, /* bitsize */
232 false, /* pc_relative */
233 0, /* bitpos */
234 complain_overflow_dont, /* complain_on_overflow */
235 ppc64_elf_addr16_ha_reloc, /* special_function */
236 "R_PPC64_ADDR16_HA", /* name */
237 false, /* partial_inplace */
238 0, /* src_mask */
239 0xffff, /* dst_mask */
240 false), /* pcrel_offset */
241
242 /* An absolute 16 bit branch; the lower two bits must be zero.
243 FIXME: we don't check that, we just clear them. */
244 HOWTO (R_PPC64_ADDR14, /* type */
245 0, /* rightshift */
246 2, /* size (0 = byte, 1 = short, 2 = long) */
247 16, /* bitsize */
248 false, /* pc_relative */
249 0, /* bitpos */
250 complain_overflow_bitfield, /* complain_on_overflow */
251 bfd_elf_generic_reloc, /* special_function */
252 "R_PPC64_ADDR14", /* name */
253 false, /* partial_inplace */
254 0, /* src_mask */
255 0xfffc, /* dst_mask */
256 false), /* pcrel_offset */
257
258 /* An absolute 16 bit branch, for which bit 10 should be set to
259 indicate that the branch is expected to be taken. The lower two
260 bits must be zero. */
261 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 16, /* bitsize */
265 false, /* pc_relative */
266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR14_BRTAKEN",/* name */
270 false, /* partial_inplace */
271 0, /* src_mask */
272 0xfffc, /* dst_mask */
273 false), /* pcrel_offset */
274
275 /* An absolute 16 bit branch, for which bit 10 should be set to
276 indicate that the branch is not expected to be taken. The lower
277 two bits must be zero. */
278 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
279 0, /* rightshift */
280 2, /* size (0 = byte, 1 = short, 2 = long) */
281 16, /* bitsize */
282 false, /* pc_relative */
283 0, /* bitpos */
284 complain_overflow_bitfield, /* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_PPC64_ADDR14_BRNTAKEN",/* name */
287 false, /* partial_inplace */
288 0, /* src_mask */
289 0xfffc, /* dst_mask */
290 false), /* pcrel_offset */
291
292 /* A relative 26 bit branch; the lower two bits must be zero. */
293 HOWTO (R_PPC64_REL24, /* type */
294 0, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 26, /* bitsize */
297 true, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_signed, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_PPC64_REL24", /* name */
302 false, /* partial_inplace */
303 0, /* src_mask */
304 0x3fffffc, /* dst_mask */
305 true), /* pcrel_offset */
306
307 /* A relative 16 bit branch; the lower two bits must be zero. */
308 HOWTO (R_PPC64_REL14, /* type */
309 0, /* rightshift */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
311 16, /* bitsize */
312 true, /* pc_relative */
313 0, /* bitpos */
314 complain_overflow_signed, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_PPC64_REL14", /* name */
317 false, /* partial_inplace */
318 0, /* src_mask */
319 0xfffc, /* dst_mask */
320 true), /* pcrel_offset */
321
322 /* A relative 16 bit branch. Bit 10 should be set to indicate that
323 the branch is expected to be taken. The lower two bits must be
324 zero. */
325 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
326 0, /* rightshift */
327 2, /* size (0 = byte, 1 = short, 2 = long) */
328 16, /* bitsize */
329 true, /* pc_relative */
330 0, /* bitpos */
331 complain_overflow_signed, /* complain_on_overflow */
332 bfd_elf_generic_reloc, /* special_function */
333 "R_PPC64_REL14_BRTAKEN", /* name */
334 false, /* partial_inplace */
335 0, /* src_mask */
336 0xfffc, /* dst_mask */
337 true), /* pcrel_offset */
338
339 /* A relative 16 bit branch. Bit 10 should be set to indicate that
340 the branch is not expected to be taken. The lower two bits must
341 be zero. */
342 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
343 0, /* rightshift */
344 2, /* size (0 = byte, 1 = short, 2 = long) */
345 16, /* bitsize */
346 true, /* pc_relative */
347 0, /* bitpos */
348 complain_overflow_signed, /* complain_on_overflow */
349 bfd_elf_generic_reloc, /* special_function */
350 "R_PPC64_REL14_BRNTAKEN",/* name */
351 false, /* partial_inplace */
352 0, /* src_mask */
353 0xfffc, /* dst_mask */
354 true), /* pcrel_offset */
355
356 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
357 symbol. */
358 HOWTO (R_PPC64_GOT16, /* type */
359 0, /* rightshift */
360 1, /* size (0 = byte, 1 = short, 2 = long) */
361 16, /* bitsize */
362 false, /* pc_relative */
363 0, /* bitpos */
364 complain_overflow_signed, /* complain_on_overflow */
365 bfd_elf_generic_reloc, /* special_function */
366 "R_PPC64_GOT16", /* name */
367 false, /* partial_inplace */
368 0, /* src_mask */
369 0xffff, /* dst_mask */
370 false), /* pcrel_offset */
371
372 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
373 the symbol. */
374 HOWTO (R_PPC64_GOT16_LO, /* type */
375 0, /* rightshift */
376 1, /* size (0 = byte, 1 = short, 2 = long) */
377 16, /* bitsize */
378 false, /* pc_relative */
379 0, /* bitpos */
380 complain_overflow_dont, /* complain_on_overflow */
381 bfd_elf_generic_reloc, /* special_function */
382 "R_PPC64_GOT16_LO", /* name */
383 false, /* partial_inplace */
384 0, /* src_mask */
385 0xffff, /* dst_mask */
386 false), /* pcrel_offset */
387
388 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
389 the symbol. */
390 HOWTO (R_PPC64_GOT16_HI, /* type */
391 16, /* rightshift */
392 1, /* size (0 = byte, 1 = short, 2 = long) */
393 16, /* bitsize */
394 false, /* pc_relative */
395 0, /* bitpos */
396 complain_overflow_dont,/* complain_on_overflow */
397 bfd_elf_generic_reloc, /* special_function */
398 "R_PPC64_GOT16_HI", /* name */
399 false, /* partial_inplace */
400 0, /* src_mask */
401 0xffff, /* dst_mask */
402 false), /* pcrel_offset */
403
404 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
405 the symbol. */
406 HOWTO (R_PPC64_GOT16_HA, /* type */
407 16, /* rightshift */
408 1, /* size (0 = byte, 1 = short, 2 = long) */
409 16, /* bitsize */
410 false, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_dont,/* complain_on_overflow */
413 ppc64_elf_addr16_ha_reloc, /* special_function */
414 "R_PPC64_GOT16_HA", /* name */
415 false, /* partial_inplace */
416 0, /* src_mask */
417 0xffff, /* dst_mask */
418 false), /* pcrel_offset */
419
420 /* This is used only by the dynamic linker. The symbol should exist
421 both in the object being run and in some shared library. The
422 dynamic linker copies the data addressed by the symbol from the
423 shared library into the object, because the object being
424 run has to have the data at some particular address. */
425 HOWTO (R_PPC64_COPY, /* type */
426 0, /* rightshift */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
428 32, /* bitsize */
429 false, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_bitfield, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_PPC64_COPY", /* name */
434 false, /* partial_inplace */
435 0, /* src_mask */
436 0, /* dst_mask */
437 false), /* pcrel_offset */
438
439 /* Like R_PPC64_ADDR64, but used when setting global offset table
440 entries. */
441 HOWTO (R_PPC64_GLOB_DAT, /* type */
442 0, /* rightshift */
443 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
444 64, /* bitsize */
445 false, /* pc_relative */
446 0, /* bitpos */
447 complain_overflow_dont, /* complain_on_overflow */
448 bfd_elf_generic_reloc, /* special_function */
449 "R_PPC64_GLOB_DAT", /* name */
450 false, /* partial_inplace */
451 0, /* src_mask */
452 0xffffffffffffffff, /* dst_mask */
453 false), /* pcrel_offset */
454
455 /* Created by the link editor. Marks a procedure linkage table
456 entry for a symbol. */
457 HOWTO (R_PPC64_JMP_SLOT, /* type */
458 0, /* rightshift */
459 0, /* size (0 = byte, 1 = short, 2 = long) */
460 0, /* bitsize */
461 false, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_PPC64_JMP_SLOT", /* name */
466 false, /* partial_inplace */
467 0, /* src_mask */
468 0, /* dst_mask */
469 false), /* pcrel_offset */
470
471 /* Used only by the dynamic linker. When the object is run, this
472 doubleword64 is set to the load address of the object, plus the
473 addend. */
474 HOWTO (R_PPC64_RELATIVE, /* type */
475 0, /* rightshift */
476 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
477 64, /* bitsize */
478 false, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_dont, /* complain_on_overflow */
481 bfd_elf_generic_reloc, /* special_function */
482 "R_PPC64_RELATIVE", /* name */
483 false, /* partial_inplace */
484 0, /* src_mask */
485 0xffffffffffffffff, /* dst_mask */
486 false), /* pcrel_offset */
487
488 /* Like R_PPC64_ADDR32, but may be unaligned. */
489 HOWTO (R_PPC64_UADDR32, /* type */
490 0, /* rightshift */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
492 32, /* bitsize */
493 false, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_bitfield, /* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_PPC64_UADDR32", /* name */
498 false, /* partial_inplace */
499 0, /* src_mask */
500 0xffffffff, /* dst_mask */
501 false), /* pcrel_offset */
502
503 /* Like R_PPC64_ADDR16, but may be unaligned. */
504 HOWTO (R_PPC64_UADDR16, /* type */
505 0, /* rightshift */
506 1, /* size (0 = byte, 1 = short, 2 = long) */
507 16, /* bitsize */
508 false, /* pc_relative */
509 0, /* bitpos */
510 complain_overflow_bitfield, /* complain_on_overflow */
511 bfd_elf_generic_reloc, /* special_function */
512 "R_PPC64_UADDR16", /* name */
513 false, /* partial_inplace */
514 0, /* src_mask */
515 0xffff, /* dst_mask */
516 false), /* pcrel_offset */
517
518 /* 32-bit PC relative. */
519 HOWTO (R_PPC64_REL32, /* type */
520 0, /* rightshift */
521 2, /* size (0 = byte, 1 = short, 2 = long) */
522 32, /* bitsize */
523 true, /* pc_relative */
524 0, /* bitpos */
525 /* FIXME: Verify. Was complain_overflow_bitfield. */
526 complain_overflow_signed, /* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_PPC64_REL32", /* name */
529 false, /* partial_inplace */
530 0, /* src_mask */
531 0xffffffff, /* dst_mask */
532 true), /* pcrel_offset */
533
534 /* 32-bit relocation to the symbol's procedure linkage table.
535 FIXME: R_PPC64_PLT32 not supported. */
536 HOWTO (R_PPC64_PLT32, /* type */
537 0, /* rightshift */
538 2, /* size (0 = byte, 1 = short, 2 = long) */
539 32, /* bitsize */
540 false, /* pc_relative */
541 0, /* bitpos */
542 complain_overflow_bitfield, /* complain_on_overflow */
543 bfd_elf_generic_reloc, /* special_function */
544 "R_PPC64_PLT32", /* name */
545 false, /* partial_inplace */
546 0, /* src_mask */
547 0, /* dst_mask */
548 false), /* pcrel_offset */
549
550 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
551 FIXME: R_PPC64_PLTREL32 not supported. */
552 HOWTO (R_PPC64_PLTREL32, /* type */
553 0, /* rightshift */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
555 32, /* bitsize */
556 true, /* pc_relative */
557 0, /* bitpos */
558 complain_overflow_signed, /* complain_on_overflow */
559 bfd_elf_generic_reloc, /* special_function */
560 "R_PPC64_PLTREL32", /* name */
561 false, /* partial_inplace */
562 0, /* src_mask */
563 0, /* dst_mask */
564 true), /* pcrel_offset */
565
566 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
567 the symbol. */
568 HOWTO (R_PPC64_PLT16_LO, /* type */
569 0, /* rightshift */
570 1, /* size (0 = byte, 1 = short, 2 = long) */
571 16, /* bitsize */
572 false, /* pc_relative */
573 0, /* bitpos */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_PLT16_LO", /* name */
577 false, /* partial_inplace */
578 0, /* src_mask */
579 0xffff, /* dst_mask */
580 false), /* pcrel_offset */
581
582 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
583 the symbol. */
584 HOWTO (R_PPC64_PLT16_HI, /* type */
585 16, /* rightshift */
586 1, /* size (0 = byte, 1 = short, 2 = long) */
587 16, /* bitsize */
588 false, /* pc_relative */
589 0, /* bitpos */
590 complain_overflow_dont, /* complain_on_overflow */
591 bfd_elf_generic_reloc, /* special_function */
592 "R_PPC64_PLT16_HI", /* name */
593 false, /* partial_inplace */
594 0, /* src_mask */
595 0xffff, /* dst_mask */
596 false), /* pcrel_offset */
597
598 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
599 the symbol. */
600 HOWTO (R_PPC64_PLT16_HA, /* type */
601 16, /* rightshift */
602 1, /* size (0 = byte, 1 = short, 2 = long) */
603 16, /* bitsize */
604 false, /* pc_relative */
605 0, /* bitpos */
606 complain_overflow_dont, /* complain_on_overflow */
607 ppc64_elf_addr16_ha_reloc, /* special_function */
608 "R_PPC64_PLT16_HA", /* name */
609 false, /* partial_inplace */
610 0, /* src_mask */
611 0xffff, /* dst_mask */
612 false), /* pcrel_offset */
613
614 /* 32-bit section relative relocation. */
615 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
616 dst_mask=0. */
617 HOWTO (R_PPC64_SECTOFF, /* type */
618 0, /* rightshift */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
620 32, /* bitsize */
621 true, /* pc_relative */
622 0, /* bitpos */
623 complain_overflow_bitfield, /* complain_on_overflow */
624 bfd_elf_generic_reloc, /* special_function */
625 "R_PPC64_SECTOFF", /* name */
626 false, /* partial_inplace */
627 0, /* src_mask */
628 0, /* dst_mask */
629 true), /* pcrel_offset */
630
631 /* 16-bit lower half section relative relocation. */
632 HOWTO (R_PPC64_SECTOFF_LO, /* type */
633 0, /* rightshift */
634 1, /* size (0 = byte, 1 = short, 2 = long) */
635 16, /* bitsize */
636 false, /* pc_relative */
637 0, /* bitpos */
638 complain_overflow_dont, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC64_SECTOFF_LO", /* name */
641 false, /* partial_inplace */
642 0, /* src_mask */
643 0xffff, /* dst_mask */
644 false), /* pcrel_offset */
645
646 /* 16-bit upper half section relative relocation. */
647 HOWTO (R_PPC64_SECTOFF_HI, /* type */
648 16, /* rightshift */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
650 16, /* bitsize */
651 false, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_dont, /* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_PPC64_SECTOFF_HI", /* name */
656 false, /* partial_inplace */
657 0, /* src_mask */
658 0xffff, /* dst_mask */
659 false), /* pcrel_offset */
660
661 /* 16-bit upper half adjusted section relative relocation. */
662 HOWTO (R_PPC64_SECTOFF_HA, /* type */
663 16, /* rightshift */
664 1, /* size (0 = byte, 1 = short, 2 = long) */
665 16, /* bitsize */
666 false, /* pc_relative */
667 0, /* bitpos */
668 complain_overflow_dont, /* complain_on_overflow */
669 ppc64_elf_addr16_ha_reloc, /* special_function */
670 "R_PPC64_SECTOFF_HA", /* name */
671 false, /* partial_inplace */
672 0, /* src_mask */
673 0xffff, /* dst_mask */
674 false), /* pcrel_offset */
675
676 /* Like R_PPC64_REL24 without touching the two least significant
677 bits. */
678 /* FIXME: Verify R_PPC64_ADDR30. */
679 HOWTO (R_PPC64_ADDR30, /* type */
680 2, /* rightshift */
681 2, /* size (0 = byte, 1 = short, 2 = long) */
682 30, /* bitsize */
683 true, /* pc_relative */
684 0, /* bitpos */
685 complain_overflow_dont, /* complain_on_overflow */
686 bfd_elf_generic_reloc, /* special_function */
687 "R_PPC64_ADDR30", /* name */
688 false, /* partial_inplace */
689 0, /* src_mask */
690 0xfffffffc, /* dst_mask */
691 true), /* pcrel_offset */
692
693 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
694
695 /* A standard 64-bit relocation. */
696 HOWTO (R_PPC64_ADDR64, /* type */
697 0, /* rightshift */
698 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
699 64, /* bitsize */
700 false, /* pc_relative */
701 0, /* bitpos */
702 complain_overflow_dont, /* complain_on_overflow */
703 bfd_elf_generic_reloc, /* special_function */
704 "R_PPC64_ADDR64", /* name */
705 false, /* partial_inplace */
706 0, /* src_mask */
707 0xffffffffffffffff, /* dst_mask */
708 false), /* pcrel_offset */
709
710 /* The bits 32-47 of an address. */
711 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
712 32, /* rightshift */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
714 16, /* bitsize */
715 false, /* pc_relative */
716 0, /* bitpos */
717 complain_overflow_dont, /* complain_on_overflow */
718 bfd_elf_generic_reloc, /* special_function */
719 "R_PPC64_ADDR16_HIGHER", /* name */
720 false, /* partial_inplace */
721 0, /* src_mask */
722 0xffff, /* dst_mask */
723 false), /* pcrel_offset */
724
725 /* The bits 32-47 of an address, plus 1 if the contents of the low
726 16 bits, treated as a signed number, is negative. */
727 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
728 32, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
731 false, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
734 ppc64_elf_addr16_ha_reloc, /* special_function */
735 "R_PPC64_ADDR16_HIGHERA", /* name */
736 false, /* partial_inplace */
737 0, /* src_mask */
738 0xffff, /* dst_mask */
739 false), /* pcrel_offset */
740
741 /* The bits 48-63 of an address. */
742 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
743 48, /* rightshift */
744 1, /* size (0 = byte, 1 = short, 2 = long) */
745 16, /* bitsize */
746 false, /* pc_relative */
747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
750 "R_PPC64_ADDR16_HIGHEST", /* name */
751 false, /* partial_inplace */
752 0, /* src_mask */
753 0xffff, /* dst_mask */
754 false), /* pcrel_offset */
755
756 /* The bits 48-63 of an address, plus 1 if the contents of the low
757 16 bits, treated as a signed number, is negative. */
758 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
759 48, /* rightshift */
760 1, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
762 false, /* pc_relative */
763 0, /* bitpos */
764 complain_overflow_dont, /* complain_on_overflow */
765 ppc64_elf_addr16_ha_reloc, /* special_function */
766 "R_PPC64_ADDR16_HIGHESTA", /* name */
767 false, /* partial_inplace */
768 0, /* src_mask */
769 0xffff, /* dst_mask */
770 false), /* pcrel_offset */
771
772 /* Like ADDR64, but may be unaligned. */
773 HOWTO (R_PPC64_UADDR64, /* type */
774 0, /* rightshift */
775 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
776 64, /* bitsize */
777 false, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC64_UADDR64", /* name */
782 false, /* partial_inplace */
783 0, /* src_mask */
784 0xffffffffffffffff, /* dst_mask */
785 false), /* pcrel_offset */
786
787 /* 64-bit relative relocation. */
788 HOWTO (R_PPC64_REL64, /* type */
789 0, /* rightshift */
790 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
791 64, /* bitsize */
792 true, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC64_REL64", /* name */
797 false, /* partial_inplace */
798 0, /* src_mask */
799 0xffffffffffffffff, /* dst_mask */
800 true), /* pcrel_offset */
801
802 /* 64-bit relocation to the symbol's procedure linkage table. */
803 /* FIXME: R_PPC64_PLT64 not supported. */
804 HOWTO (R_PPC64_PLT64, /* type */
805 0, /* rightshift */
806 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
807 64, /* bitsize */
808 false, /* pc_relative */
809 0, /* bitpos */
810 complain_overflow_dont, /* complain_on_overflow */
811 bfd_elf_generic_reloc, /* special_function */
812 "R_PPC64_PLT64", /* name */
813 false, /* partial_inplace */
814 0, /* src_mask */
815 0, /* dst_mask */
816 false), /* pcrel_offset */
817
818 /* 64-bit PC relative relocation to the symbol's procedure linkage
819 table. */
820 /* FIXME: R_PPC64_PLTREL64 not supported. */
821 HOWTO (R_PPC64_PLTREL64, /* type */
822 0, /* rightshift */
823 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
824 64, /* bitsize */
825 true, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_PPC64_PLTREL64", /* name */
830 false, /* partial_inplace */
831 0, /* src_mask */
832 0, /* dst_mask */
833 true), /* pcrel_offset */
834
835 /* 16 bit TOC-relative relocation. */
836
837 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
838 HOWTO (R_PPC64_TOC16, /* type */
839 0, /* rightshift */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
841 16, /* bitsize */
842 false, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_signed, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_TOC16", /* name */
847 false, /* partial_inplace */
848 0, /* src_mask */
849 0xffff, /* dst_mask */
850 false), /* pcrel_offset */
851
852 /* 16 bit TOC-relative relocation without overflow. */
853
854 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
855 HOWTO (R_PPC64_TOC16_LO, /* type */
856 0, /* rightshift */
857 1, /* size (0 = byte, 1 = short, 2 = long) */
858 16, /* bitsize */
859 false, /* pc_relative */
860 0, /* bitpos */
861 complain_overflow_dont, /* complain_on_overflow */
862 bfd_elf_generic_reloc, /* special_function */
863 "R_PPC64_TOC16_LO", /* name */
864 false, /* partial_inplace */
865 0, /* src_mask */
866 0xffff, /* dst_mask */
867 false), /* pcrel_offset */
868
869 /* 16 bit TOC-relative relocation, high 16 bits. */
870
871 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
872 HOWTO (R_PPC64_TOC16_HI, /* type */
873 16, /* rightshift */
874 1, /* size (0 = byte, 1 = short, 2 = long) */
875 16, /* bitsize */
876 false, /* pc_relative */
877 0, /* bitpos */
878 complain_overflow_dont, /* complain_on_overflow */
879 bfd_elf_generic_reloc, /* special_function */
880 "R_PPC64_TOC16_HI", /* name */
881 false, /* partial_inplace */
882 0, /* src_mask */
883 0xffff, /* dst_mask */
884 false), /* pcrel_offset */
885
886 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
887 contents of the low 16 bits, treated as a signed number, is
888 negative. */
889
890 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
891 HOWTO (R_PPC64_TOC16_HA, /* type */
892 16, /* rightshift */
893 1, /* size (0 = byte, 1 = short, 2 = long) */
894 16, /* bitsize */
895 false, /* pc_relative */
896 0, /* bitpos */
897 complain_overflow_dont, /* complain_on_overflow */
898 ppc64_elf_addr16_ha_reloc, /* special_function */
899 "R_PPC64_TOC16_HA", /* name */
900 false, /* partial_inplace */
901 0, /* src_mask */
902 0xffff, /* dst_mask */
903 false), /* pcrel_offset */
904
905 /* 64-bit relocation; insert value of TOC base (.TOC.). */
906
907 /* R_PPC64_TOC 51 doubleword64 .TOC. */
908 HOWTO (R_PPC64_TOC, /* type */
909 0, /* rightshift */
910 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
911 64, /* bitsize */
912 false, /* pc_relative */
913 0, /* bitpos */
914 complain_overflow_bitfield, /* complain_on_overflow */
915 bfd_elf_generic_reloc, /* special_function */
916 "R_PPC64_TOC", /* name */
917 false, /* partial_inplace */
918 0, /* src_mask */
919 0xffffffffffffffff, /* dst_mask */
920 false), /* pcrel_offset */
921
922 /* Like R_PPC64_GOT16, but also informs the link editor that the
923 value to relocate may (!) refer to a PLT entry which the link
924 editor (a) may replace with the symbol value. If the link editor
925 is unable to fully resolve the symbol, it may (b) create a PLT
926 entry and store the address to the new PLT entry in the GOT.
927 This permits lazy resolution of function symbols at run time.
928 The link editor may also skip all of this and just (c) emit a
929 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
930 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
931 HOWTO (R_PPC64_PLTGOT16, /* type */
932 0, /* rightshift */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
934 16, /* bitsize */
935 false, /* pc_relative */
936 0, /* bitpos */
937 complain_overflow_signed, /* complain_on_overflow */
938 bfd_elf_generic_reloc, /* special_function */
939 "R_PPC64_PLTGOT16", /* name */
940 false, /* partial_inplace */
941 0, /* src_mask */
942 0xffff, /* dst_mask */
943 false), /* pcrel_offset */
944
945 /* Like R_PPC64_PLTGOT16, but without overflow. */
946 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
947 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
948 0, /* rightshift */
949 1, /* size (0 = byte, 1 = short, 2 = long) */
950 16, /* bitsize */
951 false, /* pc_relative */
952 0, /* bitpos */
953 complain_overflow_dont, /* complain_on_overflow */
954 bfd_elf_generic_reloc, /* special_function */
955 "R_PPC64_PLTGOT16_LO", /* name */
956 false, /* partial_inplace */
957 0, /* src_mask */
958 0xffff, /* dst_mask */
959 false), /* pcrel_offset */
960
961 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
962 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
963 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
964 16, /* rightshift */
965 1, /* size (0 = byte, 1 = short, 2 = long) */
966 16, /* bitsize */
967 false, /* pc_relative */
968 0, /* bitpos */
969 complain_overflow_dont, /* complain_on_overflow */
970 bfd_elf_generic_reloc, /* special_function */
971 "R_PPC64_PLTGOT16_HI", /* name */
972 false, /* partial_inplace */
973 0, /* src_mask */
974 0xffff, /* dst_mask */
975 false), /* pcrel_offset */
976
977 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
978 1 if the contents of the low 16 bits, treated as a signed number,
979 is negative. */
980 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
981 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
982 16, /* rightshift */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
984 16, /* bitsize */
985 false, /* pc_relative */
986 0, /* bitpos */
987 complain_overflow_dont,/* complain_on_overflow */
988 ppc64_elf_addr16_ha_reloc, /* special_function */
989 "R_PPC64_PLTGOT16_HA", /* name */
990 false, /* partial_inplace */
991 0, /* src_mask */
992 0xffff, /* dst_mask */
993 false), /* pcrel_offset */
994
995 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
996 HOWTO (R_PPC64_ADDR16_DS, /* type */
997 0, /* rightshift */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
999 16, /* bitsize */
1000 false, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_bitfield, /* complain_on_overflow */
1003 bfd_elf_generic_reloc, /* special_function */
1004 "R_PPC64_ADDR16_DS", /* name */
1005 false, /* partial_inplace */
1006 0, /* src_mask */
1007 0xfffc, /* dst_mask */
1008 false), /* pcrel_offset */
1009
1010 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1011 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1012 0, /* rightshift */
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 16, /* bitsize */
1015 false, /* pc_relative */
1016 0, /* bitpos */
1017 complain_overflow_dont,/* complain_on_overflow */
1018 bfd_elf_generic_reloc, /* special_function */
1019 "R_PPC64_ADDR16_LO_DS",/* name */
1020 false, /* partial_inplace */
1021 0, /* src_mask */
1022 0xfffc, /* dst_mask */
1023 false), /* pcrel_offset */
1024
1025 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1026 HOWTO (R_PPC64_GOT16_DS, /* type */
1027 0, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 false, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_signed, /* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
1034 "R_PPC64_GOT16_DS", /* name */
1035 false, /* partial_inplace */
1036 0, /* src_mask */
1037 0xfffc, /* dst_mask */
1038 false), /* pcrel_offset */
1039
1040 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1041 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1042 0, /* rightshift */
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1044 16, /* bitsize */
1045 false, /* pc_relative */
1046 0, /* bitpos */
1047 complain_overflow_dont, /* complain_on_overflow */
1048 bfd_elf_generic_reloc, /* special_function */
1049 "R_PPC64_GOT16_LO_DS", /* name */
1050 false, /* partial_inplace */
1051 0, /* src_mask */
1052 0xfffc, /* dst_mask */
1053 false), /* pcrel_offset */
1054
1055 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1056 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1057 0, /* rightshift */
1058 1, /* size (0 = byte, 1 = short, 2 = long) */
1059 16, /* bitsize */
1060 false, /* pc_relative */
1061 0, /* bitpos */
1062 complain_overflow_dont, /* complain_on_overflow */
1063 bfd_elf_generic_reloc, /* special_function */
1064 "R_PPC64_PLT16_LO_DS", /* name */
1065 false, /* partial_inplace */
1066 0, /* src_mask */
1067 0xfffc, /* dst_mask */
1068 false), /* pcrel_offset */
1069
1070 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1071 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
1072 dst_mask=0. */
1073 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1074 0, /* rightshift */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 32, /* bitsize */
1077 true, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_bitfield, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_SECTOFF_DS", /* name */
1082 false, /* partial_inplace */
1083 0, /* src_mask */
1084 0, /* dst_mask */
1085 true), /* pcrel_offset */
1086
1087 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 false, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 bfd_elf_generic_reloc, /* special_function */
1096 "R_PPC64_SECTOFF_LO_DS",/* name */
1097 false, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 false), /* pcrel_offset */
1101
1102 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_TOC16_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 false, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_signed, /* complain_on_overflow */
1110 bfd_elf_generic_reloc, /* special_function */
1111 "R_PPC64_TOC16_DS", /* name */
1112 false, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 false), /* pcrel_offset */
1116
1117 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 false, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_dont, /* complain_on_overflow */
1125 bfd_elf_generic_reloc, /* special_function */
1126 "R_PPC64_TOC16_LO_DS", /* name */
1127 false, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 false), /* pcrel_offset */
1131
1132 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1133 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1134 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1135 0, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 16, /* bitsize */
1138 false, /* pc_relative */
1139 0, /* bitpos */
1140 complain_overflow_signed, /* complain_on_overflow */
1141 bfd_elf_generic_reloc, /* special_function */
1142 "R_PPC64_PLTGOT16_DS", /* name */
1143 false, /* partial_inplace */
1144 0, /* src_mask */
1145 0xfffc, /* dst_mask */
1146 false), /* pcrel_offset */
1147
1148 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1149 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1150 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1151 0, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 false, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_dont, /* complain_on_overflow */
1157 bfd_elf_generic_reloc, /* special_function */
1158 "R_PPC64_PLTGOT16_LO_DS",/* name */
1159 false, /* partial_inplace */
1160 0, /* src_mask */
1161 0xfffc, /* dst_mask */
1162 false), /* pcrel_offset */
1163
1164 /* GNU extension to record C++ vtable hierarchy. */
1165 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1166 0, /* rightshift */
1167 0, /* size (0 = byte, 1 = short, 2 = long) */
1168 0, /* bitsize */
1169 false, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 NULL, /* special_function */
1173 "R_PPC64_GNU_VTINHERIT", /* name */
1174 false, /* partial_inplace */
1175 0, /* src_mask */
1176 0, /* dst_mask */
1177 false), /* pcrel_offset */
1178
1179 /* GNU extension to record C++ vtable member usage. */
1180 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1181 0, /* rightshift */
1182 0, /* size (0 = byte, 1 = short, 2 = long) */
1183 0, /* bitsize */
1184 false, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont, /* complain_on_overflow */
1187 NULL, /* special_function */
1188 "R_PPC64_GNU_VTENTRY", /* name */
1189 false, /* partial_inplace */
1190 0, /* src_mask */
1191 0, /* dst_mask */
1192 false), /* pcrel_offset */
1193};
1194
1195\f
1196/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1197 be done. */
1198
1199static void
1200ppc_howto_init ()
1201{
1202 unsigned int i, type;
1203
1204 for (i = 0;
1205 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1206 i++)
1207 {
1208 type = ppc64_elf_howto_raw[i].type;
1209 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1210 / sizeof (ppc64_elf_howto_table[0])));
1211 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1212 }
1213}
1214
1215static reloc_howto_type *
1216ppc64_elf_reloc_type_lookup (abfd, code)
1217 bfd *abfd ATTRIBUTE_UNUSED;
1218 bfd_reloc_code_real_type code;
1219{
1220 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1221
1222 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1223 /* Initialize howto table if needed. */
1224 ppc_howto_init ();
1225
1226 switch ((int) code)
1227 {
1228 default:
1229 return (reloc_howto_type *) NULL;
1230
1231 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1232 break;
1233 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1234 break;
1235 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1236 break;
1237 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1238 break;
1239 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1240 break;
1241 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1242 break;
1243 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1244 break;
1245 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1246 break;
1247 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1248 break;
1249 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1250 break;
1251 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1252 break;
1253 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1254 break;
1255 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1256 break;
1257 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1258 break;
1259 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1260 break;
1261 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1262 break;
1263 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1264 break;
1265 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1266 break;
1267 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1268 break;
1269 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1270 break;
1271 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1272 break;
1273 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1274 break;
1275 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1276 break;
1277 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1278 break;
1279 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1280 break;
1281 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1282 break;
1283 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
1284 break;
1285 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1286 break;
1287 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1288 break;
1289 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1290 break;
1291 /* FIXME: Is CTOR 32 or 64 bits? Fix md_apply_fix3 in
1292 gas/config/tc-ppc.c too. */
1293 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR32;
1294 break;
1295 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1296 break;
1297 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1298 break;
1299 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1300 break;
1301 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1302 break;
1303 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1304 break;
1305 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1306 break;
1307 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1308 break;
1309 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1310 break;
1311 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1312 break;
1313 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1314 break;
1315 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1316 break;
1317 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1318 break;
1319 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1320 break;
1321 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1322 break;
1323 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1324 break;
1325 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1326 break;
1327 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1328 break;
1329 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1330 break;
1331 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1332 break;
1333 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1334 break;
1335 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1336 break;
1337 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1338 break;
1339 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1340 break;
1341 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1342 break;
1343 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1344 break;
1345 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1346 break;
1347 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1348 break;
1349 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1350 break;
1351 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1352 break;
1353 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1354 break;
1355 }
1356
1357 return ppc64_elf_howto_table[(int) ppc_reloc];
1358};
1359
1360/* Set the howto pointer for a PowerPC ELF reloc. */
1361
1362static void
1363ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1364 bfd *abfd ATTRIBUTE_UNUSED;
1365 arelent *cache_ptr;
1366 Elf64_Internal_Rela *dst;
1367{
65f38f15
AM		 1368 unsigned int type;
1369
5bd4f169
AM		 1370 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1371 /* Initialize howto table if needed. */
1372 ppc_howto_init ();
1373
65f38f15
AM		 1374 type = ELF64_R_TYPE (dst->r_info);
1375 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1376 / sizeof (ppc64_elf_howto_table[0])));
1377 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 1378}
1379
65f38f15 1380/* Handle the R_PPC_ADDR16_HA and similar relocs. */
5bd4f169
AM		 1381
1382static bfd_reloc_status_type
1383ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1384 output_bfd, error_message)
1385 bfd *abfd ATTRIBUTE_UNUSED;
1386 arelent *reloc_entry;
1387 asymbol *symbol;
1388 PTR data ATTRIBUTE_UNUSED;
1389 asection *input_section;
1390 bfd *output_bfd;
1391 char **error_message ATTRIBUTE_UNUSED;
1392{
1393 bfd_vma relocation;
1394
1395 if (output_bfd != NULL)
1396 {
1397 reloc_entry->address += input_section->output_offset;
1398 return bfd_reloc_ok;
1399 }
1400
1401 if (reloc_entry->address > input_section->_cooked_size)
1402 return bfd_reloc_outofrange;
1403
1404 if (bfd_is_com_section (symbol->section))
1405 relocation = 0;
1406 else
1407 relocation = symbol->value;
1408
1409 relocation += symbol->section->output_section->vma;
1410 relocation += symbol->section->output_offset;
1411 relocation += reloc_entry->addend;
1412
1413 reloc_entry->addend += (relocation & 0x8000) << 1;
1414
1415 return bfd_reloc_continue;
1416}
1417
1418/* Function to set whether a module needs the -mrelocatable bit set. */
1419
1420static boolean
1421ppc64_elf_set_private_flags (abfd, flags)
1422 bfd *abfd;
1423 flagword flags;
1424{
1425 BFD_ASSERT (!elf_flags_init (abfd)
1426 || elf_elfheader (abfd)->e_flags == flags);
1427
1428 elf_elfheader (abfd)->e_flags = flags;
1429 elf_flags_init (abfd) = true;
1430 return true;
1431}
1432
1433/* Copy backend specific data from one object module to another. */
1434static boolean
1435ppc64_elf_copy_private_bfd_data (ibfd, obfd)
1436 bfd *ibfd;
1437 bfd *obfd;
1438{
1439 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1440 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1441 return true;
1442
1443 BFD_ASSERT (!elf_flags_init (obfd)
1444 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
1445
1446 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1447 elf_flags_init (obfd) = true;
1448 return true;
1449}
1450
1451/* Merge backend specific data from an object file to the output
1452 object file when linking. */
1453static boolean
1454ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1455 bfd *ibfd;
1456 bfd *obfd;
1457{
1458 flagword old_flags;
1459 flagword new_flags;
1460 boolean error;
1461
1462 /* Check if we have the same endianess. */
1463 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1464 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1465 {
1466 const char *msg;
1467
1468 if (bfd_big_endian (ibfd))
1469 msg = _("%s: compiled for a big endian system and target is little endian");
1470 else
1471 msg = _("%s: compiled for a little endian system and target is big endian");
1472
8f615d07 1473 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
5bd4f169
AM		 1474
1475 bfd_set_error (bfd_error_wrong_format);
1476 return false;
1477 }
1478
1479 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1480 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1481 return true;
1482
1483 new_flags = elf_elfheader (ibfd)->e_flags;
1484 old_flags = elf_elfheader (obfd)->e_flags;
1485 if (!elf_flags_init (obfd))
1486 {
1487 /* First call, no flags set. */
1488 elf_flags_init (obfd) = true;
1489 elf_elfheader (obfd)->e_flags = new_flags;
1490 }
1491
1492 else if (new_flags == old_flags)
1493 /* Compatible flags are ok. */
1494 ;
1495
1496 else
1497 {
1498 /* Incompatible flags. Warn about -mrelocatable mismatch.
1499 Allow -mrelocatable-lib to be linked with either. */
1500 error = false;
1501 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1502 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1503 {
1504 error = true;
1505 (*_bfd_error_handler)
1506 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
8f615d07 1507 bfd_archive_filename (ibfd));
5bd4f169
AM		 1508 }
1509 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1510 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1511 {
1512 error = true;
1513 (*_bfd_error_handler)
1514 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
8f615d07 1515 bfd_archive_filename (ibfd));
5bd4f169
AM		 1516 }
1517
1518 /* The output is -mrelocatable-lib iff both the input files are. */
1519 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1520 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1521
1522 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1523 but each input file is either -mrelocatable or -mrelocatable-lib. */
1524 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1525 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1526 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1527 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1528
1529 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
1530 if any module uses it. */
1531 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1532
1533 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1534 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1535
1536 /* Warn about any other mismatches. */
1537 if (new_flags != old_flags)
1538 {
1539 error = true;
1540 (*_bfd_error_handler)
1541 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
8f615d07 1542 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
5bd4f169
AM		 1543 }
1544
1545 if (error)
1546 {
1547 bfd_set_error (bfd_error_bad_value);
1548 return false;
1549 }
1550 }
1551
1552 return true;
1553}
1554
1555/* Handle a PowerPC specific section when reading an object file. This
1556 is called when elfcode.h finds a section with an unknown type. */
1557
1558static boolean
1559ppc64_elf_section_from_shdr (abfd, hdr, name)
1560 bfd *abfd;
1561 Elf64_Internal_Shdr *hdr;
1562 char *name;
1563{
1564 asection *newsect;
1565 flagword flags;
1566
1567 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1568 return false;
1569
1570 newsect = hdr->bfd_section;
1571 flags = bfd_get_section_flags (abfd, newsect);
1572 if (hdr->sh_flags & SHF_EXCLUDE)
1573 flags |= SEC_EXCLUDE;
1574
1575 if (hdr->sh_type == SHT_ORDERED)
1576 flags |= SEC_SORT_ENTRIES;
1577
1578 bfd_set_section_flags (abfd, newsect, flags);
1579 return true;
1580}
1581\f
65f38f15
AM		 1582/* The following functions are specific to the ELF linker, while
1583 functions above are used generally. Those named ppc64_elf_* are
1584 called by the main ELF linker code. They appear in this file more
1585 or less in the order in which they are called. eg.
1586 ppc64_elf_check_relocs is called early in the link process,
1587 ppc64_elf_finish_dynamic_sections is one of the last functions
1588 called. */
1589
1590/* The linker needs to keep track of the number of relocs that it
1591 decides to copy as dynamic relocs in check_relocs for each symbol.
1592 This is so that it can later discard them if they are found to be
1593 unnecessary. We store the information in a field extending the
1594 regular ELF linker hash table. */
1595
1596struct ppc_dyn_relocs
1597{
1598 struct ppc_dyn_relocs *next;
1599
1600 /* The input section of the reloc. */
1601 asection *sec;
1602
1603 /* Total number of relocs copied for the input section. */
1604 bfd_size_type count;
1605
1606 /* Number of pc-relative relocs copied for the input section. */
1607 bfd_size_type pc_count;
1608};
1609
1610/* Of those relocs that might be copied as dynamic relocs, this macro
1611 selects between relative and absolute types. */
1612
1613#define IS_ABSOLUTE_RELOC(RTYPE) \
1614 ((RTYPE) != R_PPC64_REL14 \
1615 && (RTYPE) != R_PPC64_REL14_BRNTAKEN \
1616 && (RTYPE) != R_PPC64_REL14_BRTAKEN \
1617 && (RTYPE) != R_PPC64_REL24 \
1618 && (RTYPE) != R_PPC64_REL32 \
1619 && (RTYPE) != R_PPC64_REL64)
1620
1621/* ppc64 ELF linker hash entry. */
1622
1623struct ppc_link_hash_entry
1624{
1625 struct elf_link_hash_entry elf;
1626
1627 /* Track dynamic relocs copied for this symbol. */
1628 struct ppc_dyn_relocs *dyn_relocs;
1629};
1630
1631/* ppc64 ELF linker hash table. */
1632
1633struct ppc_link_hash_table
1634{
1635 struct elf_link_hash_table elf;
1636
1637 /* Short-cuts to get to dynamic linker sections. */
1638 asection *sgot;
1639 asection *srelgot;
1640 asection *splt;
1641 asection *srelplt;
1642 asection *sdynbss;
1643 asection *srelbss;
1644 asection *sglink;
1645};
1646
1647/* Get the ppc64 ELF linker hash table from a link_info structure. */
1648
1649#define ppc_hash_table(p) \
1650 ((struct ppc_link_hash_table *) ((p)->hash))
1651
1652/* Create an entry in a ppc64 ELF linker hash table. */
1653
1654static struct bfd_hash_entry *
1655link_hash_newfunc (entry, table, string)
1656 struct bfd_hash_entry *entry;
1657 struct bfd_hash_table *table;
1658 const char *string;
1659{
1660 /* Allocate the structure if it has not already been allocated by a
1661 subclass. */
1662 if (entry == NULL)
1663 {
1664 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
1665 if (entry == NULL)
1666 return entry;
1667 }
1668
1669 /* Call the allocation method of the superclass. */
1670 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1671 if (entry != NULL)
1672 {
1673 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
1674
1675 eh->dyn_relocs = NULL;
1676 }
1677
1678 return entry;
1679}
1680
1681/* Create a ppc64 ELF linker hash table. */
1682
1683static struct bfd_link_hash_table *
1684ppc64_elf_link_hash_table_create (abfd)
1685 bfd *abfd;
1686{
1687 struct ppc_link_hash_table *htab;
1688 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
1689
1690 htab = (struct ppc_link_hash_table *) bfd_alloc (abfd, amt);
1691 if (htab == NULL)
1692 return NULL;
1693
1694 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
1695 {
1696 bfd_release (abfd, htab);
1697 return NULL;
1698 }
1699
1700 htab->sgot = NULL;
1701 htab->srelgot = NULL;
1702 htab->splt = NULL;
1703 htab->srelplt = NULL;
1704 htab->sdynbss = NULL;
1705 htab->srelbss = NULL;
1706 htab->sglink = NULL;
1707
1708 return &htab->elf.root;
1709}
1710
1711/* Create .got and .rela.got sections in DYNOBJ, and set up
1712 shortcuts to them in our hash table. */
1713
1714static boolean
1715create_got_section (dynobj, info)
1716 bfd *dynobj;
1717 struct bfd_link_info *info;
1718{
1719 struct ppc_link_hash_table *htab;
1720
1721 if (! _bfd_elf_create_got_section (dynobj, info))
1722 return false;
1723
1724 htab = ppc_hash_table (info);
1725 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1726 if (!htab->sgot)
1727 abort ();
1728
1729 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
1730 if (!htab->srelgot
1731 || ! bfd_set_section_flags (dynobj, htab->srelgot,
1732 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1733 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1734 | SEC_READONLY))
1735 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
1736 return false;
1737 return true;
1738}
5bd4f169
AM		 1739
1740/* Create the .glink section as well as the ordinary dynamic
1741 sections. */
1742
1743static boolean
65f38f15
AM		 1744ppc64_elf_create_dynamic_sections (dynobj, info)
1745 bfd *dynobj;
5bd4f169
AM		 1746 struct bfd_link_info *info;
1747{
65f38f15 1748 struct ppc_link_hash_table *htab;
5bd4f169
AM		 1749 flagword flags;
1750
65f38f15
AM		 1751 htab = ppc_hash_table (info);
1752 if (!htab->sgot && !create_got_section (dynobj, info))
5bd4f169
AM		 1753 return false;
1754
65f38f15 1755 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
5bd4f169 1756 return false;
65f38f15
AM		 1757
1758 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1759 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
1760 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1761 if (!info->shared)
1762 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1763
1764 if (!htab->splt || !htab->srelplt || !htab->sdynbss
1765 || (!info->shared && !htab->srelbss))
1766 abort ();
1767
1768 /* Our .plt just contains pointers, no code. */
1769 flags = bfd_get_section_flags (dynobj, htab->splt);
5bd4f169 1770 flags &= ~SEC_CODE;
65f38f15 1771 if (! bfd_set_section_flags (dynobj, htab->splt, flags))
5bd4f169
AM		 1772 return false;
1773
1774 /* Create .glink for global linkage functions. */
1775 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1776 | SEC_LINKER_CREATED);
65f38f15
AM		 1777 htab->sglink = bfd_make_section (dynobj, ".glink");
1778 if (htab->sglink == NULL
1779 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
1780 || ! bfd_set_section_alignment (dynobj, htab->sglink, 3))
5bd4f169
AM		 1781 return false;
1782
1783 return true;
1784}
1785
65f38f15
AM		 1786/* Copy the extra info we tack onto an elf_link_hash_entry. */
1787
1788static void
1789ppc64_elf_copy_indirect_symbol (dir, ind)
1790 struct elf_link_hash_entry *dir, *ind;
1791{
1792 struct ppc_link_hash_entry *edir, *eind;
1793
1794 edir = (struct ppc_link_hash_entry *) dir;
1795 eind = (struct ppc_link_hash_entry *) ind;
1796
bbd7ec4a 1797 if (eind->dyn_relocs != NULL)
65f38f15 1798 {
bbd7ec4a
AM		 1799 if (edir->dyn_relocs != NULL)
1800 {
1801 struct ppc_dyn_relocs **pp;
1802 struct ppc_dyn_relocs *p;
1803
1804 if (dir != ind->weakdef)
1805 abort ();
1806
1807 /* Add reloc counts against the weak sym to the strong sym
1808 list. Merge any entries against the same section. */
1809 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1810 {
1811 struct ppc_dyn_relocs *q;
1812
1813 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1814 if (q->sec == p->sec)
1815 {
1816 q->pc_count += p->pc_count;
1817 q->count += p->count;
1818 *pp = p->next;
1819 break;
1820 }
1821 if (q == NULL)
1822 pp = &p->next;
1823 }
1824 *pp = edir->dyn_relocs;
1825 }
1826
65f38f15
AM		 1827 edir->dyn_relocs = eind->dyn_relocs;
1828 eind->dyn_relocs = NULL;
1829 }
65f38f15
AM		 1830
1831 _bfd_elf_link_hash_copy_indirect (dir, ind);
1832}
1833
5bd4f169 1834/* Look through the relocs for a section during the first phase, and
65f38f15
AM		 1835 calculate needed space in the global offset table, procedure
1836 linkage table, and dynamic reloc sections. */
5bd4f169
AM		 1837
1838static boolean
1839ppc64_elf_check_relocs (abfd, info, sec, relocs)
1840 bfd *abfd;
1841 struct bfd_link_info *info;
1842 asection *sec;
1843 const Elf_Internal_Rela *relocs;
1844{
65f38f15 1845 struct ppc_link_hash_table *htab;
5bd4f169
AM		 1846 Elf_Internal_Shdr *symtab_hdr;
1847 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1848 const Elf_Internal_Rela *rel;
1849 const Elf_Internal_Rela *rel_end;
5bd4f169 1850 asection *sreloc;
5bd4f169
AM		 1851
1852 if (info->relocateable)
1853 return true;
1854
65f38f15 1855 htab = ppc_hash_table (info);
5bd4f169 1856 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 1857
1858 sym_hashes = elf_sym_hashes (abfd);
1859 sym_hashes_end = (sym_hashes
1860 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
1861 if (!elf_bad_symtab (abfd))
1862 sym_hashes_end -= symtab_hdr->sh_info;
1863
1864 sreloc = NULL;
1865
1866 rel_end = relocs + sec->reloc_count;
1867 for (rel = relocs; rel < rel_end; rel++)
1868 {
1869 unsigned long r_symndx;
1870 struct elf_link_hash_entry *h;
a33d1f77 1871 enum elf_ppc_reloc_type r_type;
5bd4f169
AM		 1872
1873 r_symndx = ELF64_R_SYM (rel->r_info);
1874 if (r_symndx < symtab_hdr->sh_info)
1875 h = NULL;
1876 else
1877 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1878
a33d1f77
AM		 1879 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
1880 switch (r_type)
5bd4f169
AM		 1881 {
1882 /* GOT16 relocations */
1883 case R_PPC64_GOT16:
5bd4f169 1884 case R_PPC64_GOT16_DS:
65f38f15
AM		 1885 case R_PPC64_GOT16_HA:
1886 case R_PPC64_GOT16_HI:
1887 case R_PPC64_GOT16_LO:
5bd4f169 1888 case R_PPC64_GOT16_LO_DS:
5bd4f169 1889
65f38f15
AM		 1890 /* This symbol requires a global offset table entry. */
1891 if (htab->sgot == NULL)
5bd4f169 1892 {
65f38f15
AM		 1893 if (htab->elf.dynobj == NULL)
1894 htab->elf.dynobj = abfd;
1895 if (!create_got_section (htab->elf.dynobj, info))
5bd4f169 1896 return false;
5bd4f169
AM		 1897 }
1898
1899 if (h != NULL)
1900 {
65f38f15 1901 h->got.refcount += 1;
5bd4f169
AM		 1902 }
1903 else
1904 {
65f38f15
AM		 1905 bfd_signed_vma *local_got_refcounts;
1906
5bd4f169 1907 /* This is a global offset table entry for a local symbol. */
65f38f15 1908 local_got_refcounts = elf_local_got_refcounts (abfd);
5bd4f169
AM		 1909 if (local_got_refcounts == NULL)
1910 {
dc810e39 1911 bfd_size_type size;
5bd4f169 1912
dc810e39
AM		 1913 size = symtab_hdr->sh_info;
1914 size *= sizeof (bfd_signed_vma);
1915 local_got_refcounts = ((bfd_signed_vma *)
65f38f15 1916 bfd_zalloc (abfd, size));
5bd4f169
AM		 1917 if (local_got_refcounts == NULL)
1918 return false;
1919 elf_local_got_refcounts (abfd) = local_got_refcounts;
5bd4f169 1920 }
65f38f15 1921 local_got_refcounts[r_symndx] += 1;
5bd4f169
AM		 1922 }
1923 break;
1924
5bd4f169 1925 case R_PPC64_PLT16_HA:
65f38f15
AM		 1926 case R_PPC64_PLT16_HI:
1927 case R_PPC64_PLT16_LO:
1928 case R_PPC64_PLT32:
1929 case R_PPC64_PLT64:
5bd4f169
AM		 1930 /* This symbol requires a procedure linkage table entry. We
1931 actually build the entry in adjust_dynamic_symbol,
1932 because this might be a case of linking PIC code without
1933 linking in any dynamic objects, in which case we don't
1934 need to generate a procedure linkage table after all. */
5bd4f169
AM		 1935 if (h == NULL)
1936 {
1937 /* It does not make sense to have a procedure linkage
1938 table entry for a local symbol. */
1939 bfd_set_error (bfd_error_bad_value);
1940 return false;
1941 }
1942
65f38f15
AM		 1943 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1944 h->plt.refcount += 1;
5bd4f169
AM		 1945 break;
1946
1947 /* The following relocations don't need to propagate the
1948 relocation if linking a shared object since they are
1949 section relative. */
1950 case R_PPC64_SECTOFF:
1951 case R_PPC64_SECTOFF_LO:
1952 case R_PPC64_SECTOFF_HI:
1953 case R_PPC64_SECTOFF_HA:
1954 case R_PPC64_SECTOFF_DS:
1955 case R_PPC64_SECTOFF_LO_DS:
1956 case R_PPC64_TOC16:
1957 case R_PPC64_TOC16_LO:
1958 case R_PPC64_TOC16_HI:
1959 case R_PPC64_TOC16_HA:
1960 case R_PPC64_TOC16_DS:
1961 case R_PPC64_TOC16_LO_DS:
1962 break;
1963
1964 /* This relocation describes the C++ object vtable hierarchy.
1965 Reconstruct it for later use during GC. */
1966 case R_PPC64_GNU_VTINHERIT:
1967 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1968 return false;
1969 break;
1970
1971 /* This relocation describes which C++ vtable entries are actually
1972 used. Record for later use during GC. */
1973 case R_PPC64_GNU_VTENTRY:
1974 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1975 return false;
1976 break;
1977
5bd4f169
AM		 1978 case R_PPC64_REL64:
1979 case R_PPC64_REL32:
1980 case R_PPC64_REL24:
1981 case R_PPC64_REL14:
1982 case R_PPC64_REL14_BRTAKEN:
1983 case R_PPC64_REL14_BRNTAKEN:
65f38f15
AM		 1984 case R_PPC64_ADDR14:
1985 case R_PPC64_ADDR14_BRNTAKEN:
1986 case R_PPC64_ADDR14_BRTAKEN:
1987 case R_PPC64_ADDR16:
1988 case R_PPC64_ADDR16_DS:
1989 case R_PPC64_ADDR16_HA:
1990 case R_PPC64_ADDR16_HI:
1991 case R_PPC64_ADDR16_HIGHER:
1992 case R_PPC64_ADDR16_HIGHERA:
1993 case R_PPC64_ADDR16_HIGHEST:
1994 case R_PPC64_ADDR16_HIGHESTA:
1995 case R_PPC64_ADDR16_LO:
1996 case R_PPC64_ADDR16_LO_DS:
1997 case R_PPC64_ADDR24:
1998 case R_PPC64_ADDR30:
1999 case R_PPC64_ADDR32:
2000 case R_PPC64_ADDR64:
2001 case R_PPC64_UADDR16:
2002 case R_PPC64_UADDR32:
2003 case R_PPC64_UADDR64:
5bd4f169 2004 case R_PPC64_TOC:
65f38f15
AM		 2005 /* If we are creating a shared library, and this is a reloc
2006 against a global symbol, or a non PC relative reloc
2007 against a local symbol, then we need to copy the reloc
2008 into the shared library. However, if we are linking with
2009 -Bsymbolic, we do not need to copy a reloc against a
2010 global symbol which is defined in an object we are
2011 including in the link (i.e., DEF_REGULAR is set). At
2012 this point we have not seen all the input files, so it is
2013 possible that DEF_REGULAR is not set now but will be set
2014 later (it is never cleared). In case of a weak definition,
2015 DEF_REGULAR may be cleared later by a strong definition in
2016 a shared library. We account for that possibility below by
2017 storing information in the relocs_copied field of the hash
2018 table entry. A similar situation occurs when creating
2019 shared libraries and symbol visibility changes render the
2020 symbol local.
2021
2022 If on the other hand, we are creating an executable, we
2023 may need to keep relocations for symbols satisfied by a
2024 dynamic library if we manage to avoid copy relocs for the
2025 symbol. */
2026 if ((info->shared
2027 && (sec->flags & SEC_ALLOC) != 0
a33d1f77 2028 && (IS_ABSOLUTE_RELOC (r_type)
65f38f15
AM		 2029 || (h != NULL
2030 && (! info->symbolic
2031 || h->root.type == bfd_link_hash_defweak
2032 || (h->elf_link_hash_flags
2033 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2034 || (!info->shared
2035 && (sec->flags & SEC_ALLOC) != 0
2036 && h != NULL
2037 && (h->root.type == bfd_link_hash_defweak
2038 || (h->elf_link_hash_flags
2039 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 2040 {
65f38f15
AM		 2041 /* We must copy these reloc types into the output file.
2042 Create a reloc section in dynobj and make room for
2043 this reloc. */
5bd4f169
AM		 2044 if (sreloc == NULL)
2045 {
2046 const char *name;
65f38f15 2047 bfd *dynobj;
5bd4f169
AM		 2048
2049 name = (bfd_elf_string_from_elf_section
2050 (abfd,
2051 elf_elfheader (abfd)->e_shstrndx,
2052 elf_section_data (sec)->rel_hdr.sh_name));
2053 if (name == NULL)
2054 return false;
2055
65f38f15
AM		 2056 if (strncmp (name, ".rela", 5) != 0
2057 || strcmp (bfd_get_section_name (abfd, sec),
2058 name + 5) != 0)
2059 {
2060 (*_bfd_error_handler)
2061 (_("%s: bad relocation section name `%s\'"),
2062 bfd_archive_filename (abfd), name);
2063 }
2064
2065 if (htab->elf.dynobj == NULL)
2066 htab->elf.dynobj = abfd;
5bd4f169 2067
65f38f15 2068 dynobj = htab->elf.dynobj;
5bd4f169
AM		 2069 sreloc = bfd_get_section_by_name (dynobj, name);
2070 if (sreloc == NULL)
2071 {
2072 flagword flags;
2073
2074 sreloc = bfd_make_section (dynobj, name);
2075 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2076 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2077 if ((sec->flags & SEC_ALLOC) != 0)
2078 flags |= SEC_ALLOC | SEC_LOAD;
2079 if (sreloc == NULL
2080 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 2081 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
5bd4f169
AM		 2082 return false;
2083 }
65f38f15 2084 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 2085 }
2086
65f38f15
AM		 2087 /* If this is a global symbol, we count the number of
2088 relocations we need for this symbol. */
2089 if (h != NULL)
2090 {
2091 struct ppc_link_hash_entry *eh;
2092 struct ppc_dyn_relocs *p;
2093
2094 eh = (struct ppc_link_hash_entry *) h;
2095 p = eh->dyn_relocs;
5bd4f169 2096
65f38f15
AM		 2097 if (p == NULL || p->sec != sec)
2098 {
2099 p = ((struct ppc_dyn_relocs *)
2100 bfd_alloc (htab->elf.dynobj,
2101 (bfd_size_type) sizeof *p));
2102 if (p == NULL)
2103 return false;
2104 p->next = eh->dyn_relocs;
2105 eh->dyn_relocs = p;
2106 p->sec = sec;
2107 p->count = 0;
2108 p->pc_count = 0;
2109 }
5bd4f169 2110
65f38f15 2111 p->count += 1;
a33d1f77 2112 if (!IS_ABSOLUTE_RELOC (r_type))
65f38f15
AM		 2113 p->pc_count += 1;
2114 }
2115 else
2116 {
2117 /* Track dynamic relocs needed for local syms too. */
2118 elf_section_data (sec)->local_dynrel += 1;
2119 }
2120 }
5bd4f169 2121 break;
65f38f15
AM		 2122
2123 default:
5bd4f169
AM		 2124 }
2125 }
2126
2127 return true;
2128}
2129
2130/* Return the section that should be marked against GC for a given
2131 relocation. */
2132
2133static asection *
2134ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
2135 bfd *abfd;
2136 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2137 Elf_Internal_Rela *rel;
2138 struct elf_link_hash_entry *h;
2139 Elf_Internal_Sym *sym;
2140{
2141 if (h != NULL)
2142 {
a33d1f77
AM		 2143 enum elf_ppc_reloc_type r_type;
2144
2145 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2146 switch (r_type)
5bd4f169
AM		 2147 {
2148 case R_PPC64_GNU_VTINHERIT:
2149 case R_PPC64_GNU_VTENTRY:
2150 break;
2151
2152 default:
2153 switch (h->root.type)
2154 {
2155 case bfd_link_hash_defined:
2156 case bfd_link_hash_defweak:
2157 return h->root.u.def.section;
2158
2159 case bfd_link_hash_common:
2160 return h->root.u.c.p->section;
2161
2162 default:
2163 break;
2164 }
2165 }
2166 }
2167 else
2168 {
2169 if (! (elf_bad_symtab (abfd)
2170 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
2171 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
2172 && sym->st_shndx != SHN_COMMON))
2173 {
2174 return bfd_section_from_elf_index (abfd, sym->st_shndx);
2175 }
2176 }
2177
2178 return NULL;
2179}
2180
65f38f15
AM		 2181/* Update the .got, .plt. and dynamic reloc reference counts for the
2182 section being removed. */
5bd4f169
AM		 2183
2184static boolean
2185ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2186 bfd *abfd;
2187 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2188 asection *sec;
2189 const Elf_Internal_Rela *relocs;
2190{
2191 Elf_Internal_Shdr *symtab_hdr;
2192 struct elf_link_hash_entry **sym_hashes;
2193 bfd_signed_vma *local_got_refcounts;
2194 const Elf_Internal_Rela *rel, *relend;
5bd4f169
AM		 2195
2196 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2197 sym_hashes = elf_sym_hashes (abfd);
2198 local_got_refcounts = elf_local_got_refcounts (abfd);
2199
2200 relend = relocs + sec->reloc_count;
2201 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 2202 {
2203 unsigned long r_symndx;
2204 enum elf_ppc_reloc_type r_type;
2205 struct elf_link_hash_entry *h;
5bd4f169 2206
a33d1f77
AM		 2207 r_symndx = ELF64_R_SYM (rel->r_info);
2208 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2209 switch (r_type)
2210 {
2211 case R_PPC64_GOT16:
2212 case R_PPC64_GOT16_DS:
2213 case R_PPC64_GOT16_HA:
2214 case R_PPC64_GOT16_HI:
2215 case R_PPC64_GOT16_LO:
2216 case R_PPC64_GOT16_LO_DS:
2217 if (r_symndx >= symtab_hdr->sh_info)
2218 {
2219 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2220 if (h->got.refcount > 0)
2221 h->got.refcount--;
2222 }
2223 else
2224 {
2225 if (local_got_refcounts[r_symndx] > 0)
2226 local_got_refcounts[r_symndx]--;
2227 }
2228 break;
65f38f15 2229
a33d1f77
AM		 2230 case R_PPC64_PLT16_HA:
2231 case R_PPC64_PLT16_HI:
2232 case R_PPC64_PLT16_LO:
2233 case R_PPC64_PLT32:
2234 case R_PPC64_PLT64:
2235 if (r_symndx >= symtab_hdr->sh_info)
2236 {
2237 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2238 if (h->plt.refcount > 0)
2239 h->plt.refcount--;
2240 }
2241 break;
65f38f15 2242
a33d1f77
AM		 2243 case R_PPC64_REL14:
2244 case R_PPC64_REL14_BRNTAKEN:
2245 case R_PPC64_REL14_BRTAKEN:
2246 case R_PPC64_REL24:
2247 case R_PPC64_REL32:
2248 case R_PPC64_REL64:
2249 if (r_symndx >= symtab_hdr->sh_info)
2250 {
2251 struct ppc_link_hash_entry *eh;
2252 struct ppc_dyn_relocs **pp;
2253 struct ppc_dyn_relocs *p;
65f38f15 2254
a33d1f77
AM		 2255 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2256 eh = (struct ppc_link_hash_entry *) h;
65f38f15 2257
a33d1f77
AM		 2258 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2259 if (p->sec == sec)
2260 {
2261 p->pc_count -= 1;
2262 p->count -= 1;
2263 if (p->count == 0)
2264 *pp = p->next;
2265 break;
2266 }
2267 }
2268 break;
65f38f15 2269
a33d1f77
AM		 2270 case R_PPC64_ADDR14:
2271 case R_PPC64_ADDR14_BRNTAKEN:
2272 case R_PPC64_ADDR14_BRTAKEN:
2273 case R_PPC64_ADDR16:
2274 case R_PPC64_ADDR16_DS:
2275 case R_PPC64_ADDR16_HA:
2276 case R_PPC64_ADDR16_HI:
2277 case R_PPC64_ADDR16_HIGHER:
2278 case R_PPC64_ADDR16_HIGHERA:
2279 case R_PPC64_ADDR16_HIGHEST:
2280 case R_PPC64_ADDR16_HIGHESTA:
2281 case R_PPC64_ADDR16_LO:
2282 case R_PPC64_ADDR16_LO_DS:
2283 case R_PPC64_ADDR24:
2284 case R_PPC64_ADDR30:
2285 case R_PPC64_ADDR32:
2286 case R_PPC64_ADDR64:
2287 case R_PPC64_UADDR16:
2288 case R_PPC64_UADDR32:
2289 case R_PPC64_UADDR64:
2290 case R_PPC64_TOC:
2291 if (r_symndx >= symtab_hdr->sh_info)
2292 {
2293 struct ppc_link_hash_entry *eh;
2294 struct ppc_dyn_relocs **pp;
2295 struct ppc_dyn_relocs *p;
65f38f15 2296
a33d1f77
AM		 2297 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2298 eh = (struct ppc_link_hash_entry *) h;
2299
2300 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2301 if (p->sec == sec)
2302 {
2303 p->count -= 1;
2304 if (p->count == 0)
2305 *pp = p->next;
2306 break;
2307 }
2308 }
2309 break;
5bd4f169 2310
a33d1f77
AM		 2311 default:
2312 break;
2313 }
2314 }
5bd4f169
AM		 2315 return true;
2316}
2317
2318/* Adjust a symbol defined by a dynamic object and referenced by a
2319 regular object. The current definition is in some section of the
2320 dynamic object, but we're not including those sections. We have to
2321 change the definition to something the rest of the link can
2322 understand. */
2323
2324static boolean
2325ppc64_elf_adjust_dynamic_symbol (info, h)
2326 struct bfd_link_info *info;
2327 struct elf_link_hash_entry *h;
2328{
65f38f15
AM		 2329 struct ppc_link_hash_table *htab;
2330 struct ppc_link_hash_entry * eh;
2331 struct ppc_dyn_relocs *p;
5bd4f169
AM		 2332 asection *s;
2333 unsigned int power_of_two;
5bd4f169 2334
65f38f15 2335 htab = ppc_hash_table (info);
5bd4f169 2336
65f38f15
AM		 2337 /* If this is a function, put it in the procedure linkage table. We
2338 will fill in the contents of the procedure linkage table later. */
5bd4f169
AM		 2339 if (h->type == STT_FUNC
2340 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2341 {
65f38f15
AM		 2342 struct elf_link_hash_entry *fdh;
2343
2344 /* If it's a function entry point, the name starts with a dot
2345 unless someone has written some poor assembly code. The ABI
2346 for .plt calls requires that there be a function descriptor
2347 sym which has the name of the function minus the dot. */
2348
2349 if (h->plt.refcount <= 0
2350 || h->root.root.string[0] != '.'
2351 || h->root.root.string[1] == '\0'
2352 || (! info->shared
2353 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2354 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
5bd4f169 2355 {
65f38f15
AM		 2356 /* This case can occur if we saw a PLT reloc in an input
2357 file, but the symbol was never referred to by a dynamic
2358 object, or if all references were garbage collected. In
2359 such a case, we don't actually need to build a procedure
2360 linkage table entry. */
5bd4f169
AM		 2361 h->plt.offset = (bfd_vma) -1;
2362 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2363 return true;
2364 }
2365
65f38f15
AM		 2366 /* Find the corresponding function descriptor symbol. Create it
2367 as undefined if necessary. ppc_elf64_finish_dynamic_symbol
2368 will look it up again and create a JMP_SLOT reloc for it. */
5bd4f169 2369
65f38f15
AM		 2370 fdh = elf_link_hash_lookup (elf_hash_table (info),
2371 h->root.root.string + 1,
2372 false, false, false);
5bd4f169 2373
65f38f15 2374 if (fdh == NULL)
5bd4f169 2375 {
65f38f15
AM		 2376 asymbol *newsym;
2377
2378 /* Create it as undefined. */
2379 newsym = bfd_make_empty_symbol (htab->elf.dynobj);
2380 newsym->name = h->root.root.string + 1;
2381 newsym->section = bfd_und_section_ptr;
2382 newsym->value = 0;
2383 newsym->flags = BSF_DYNAMIC | BSF_OBJECT;
2384
2385 if ( !(_bfd_generic_link_add_one_symbol
2386 (info, htab->elf.dynobj, newsym->name, newsym->flags,
2387 newsym->section, newsym->value, NULL, false, false,
2388 (struct bfd_link_hash_entry **) &fdh)))
5bd4f169 2389 {
65f38f15 2390 return false;
5bd4f169 2391 }
5bd4f169 2392 }
5bd4f169
AM		 2393 return true;
2394 }
bbd7ec4a
AM		 2395 else
2396 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 2397
2398 /* If this is a weak symbol, and there is a real definition, the
2399 processor independent code will have arranged for us to see the
2400 real definition first, and we can just use the same value. */
2401 if (h->weakdef != NULL)
2402 {
2403 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2404 || h->weakdef->root.type == bfd_link_hash_defweak);
2405 h->root.u.def.section = h->weakdef->root.u.def.section;
2406 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 2407 return true;
5bd4f169
AM		 2408 }
2409
2410 /* This is a reference to a symbol defined by a dynamic object which
2411 is not a function. */
2412
2413 /* If we are creating a shared library, we must presume that the
2414 only references to the symbol are via the global offset table.
2415 For such cases we need not do anything here; the relocations will
2416 be handled correctly by relocate_section. */
2417 if (info->shared)
2418 return true;
2419
65f38f15
AM		 2420 /* If there are no references to this symbol that do not use the
2421 GOT, we don't need to generate a copy reloc. */
2422 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2423 return true;
2424
2425 eh = (struct ppc_link_hash_entry *) h;
2426 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2427 {
2428 s = p->sec->output_section;
2429 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2430 break;
2431 }
2432
2433 /* If we didn't find any dynamic relocs in read-only sections, then
2434 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2435 if (p == NULL)
2436 {
2437 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2438 return true;
2439 }
2440
5bd4f169
AM		 2441 /* We must allocate the symbol in our .dynbss section, which will
2442 become part of the .bss section of the executable. There will be
2443 an entry for this symbol in the .dynsym section. The dynamic
2444 object will contain position independent code, so all references
2445 from the dynamic object to this symbol will go through the global
2446 offset table. The dynamic linker will use the .dynsym entry to
2447 determine the address it must put in the global offset table, so
2448 both the dynamic object and the regular object will refer to the
2449 same memory location for the variable. */
5bd4f169
AM		 2450
2451 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2452 copy the initial value out of the dynamic object and into the
2453 runtime process image. We need to remember the offset into the
2454 .rela.bss section we are going to use. */
2455 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2456 {
65f38f15 2457 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 2458 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2459 }
2460
2461 /* We need to figure out the alignment required for this symbol. I
2462 have no idea how ELF linkers handle this. */
2463 power_of_two = bfd_log2 (h->size);
2464 if (power_of_two > 4)
2465 power_of_two = 4;
2466
2467 /* Apply the required alignment. */
65f38f15
AM		 2468 s = htab->sdynbss;
2469 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
2470 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 2471 {
65f38f15 2472 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 2473 return false;
2474 }
2475
2476 /* Define the symbol as being at this point in the section. */
2477 h->root.u.def.section = s;
2478 h->root.u.def.value = s->_raw_size;
2479
2480 /* Increment the section size to make room for the symbol. */
2481 s->_raw_size += h->size;
2482
2483 return true;
2484}
2485
65f38f15
AM		 2486/* This is the condition under which ppc64_elf_finish_dynamic_symbol
2487 will be called from elflink.h. If elflink.h doesn't call our
2488 finish_dynamic_symbol routine, we'll need to do something about
2489 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
2490#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
2491 ((DYN) \
2492 && ((INFO)->shared \
2493 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
2494 && ((H)->dynindx != -1 \
2495 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 2496
65f38f15
AM		 2497/* Allocate space in .plt, .got and associated reloc sections for
2498 dynamic relocs. */
5bd4f169
AM		 2499
2500static boolean
65f38f15
AM		 2501allocate_dynrelocs (h, inf)
2502 struct elf_link_hash_entry *h;
2503 PTR inf;
5bd4f169 2504{
65f38f15
AM		 2505 struct bfd_link_info *info;
2506 struct ppc_link_hash_table *htab;
5bd4f169 2507 asection *s;
65f38f15
AM		 2508 struct ppc_link_hash_entry *eh;
2509 struct ppc_dyn_relocs *p;
5bd4f169 2510
65f38f15
AM		 2511 if (h->root.type == bfd_link_hash_indirect
2512 || h->root.type == bfd_link_hash_warning)
2513 return true;
5bd4f169 2514
65f38f15
AM		 2515 info = (struct bfd_link_info *) inf;
2516 htab = ppc_hash_table (info);
5bd4f169 2517
65f38f15
AM		 2518 if (htab->elf.dynamic_sections_created
2519 && h->plt.refcount > 0)
5bd4f169 2520 {
65f38f15
AM		 2521 /* Make sure this symbol is output as a dynamic symbol.
2522 Undefined weak syms won't yet be marked as dynamic. */
2523 if (h->dynindx == -1
2524 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5bd4f169 2525 {
65f38f15
AM		 2526 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2527 return false;
5bd4f169 2528 }
5bd4f169 2529
65f38f15
AM		 2530 BFD_ASSERT (h->root.root.string[0] == '.'
2531 && h->root.root.string[1] != '\0');
5bd4f169 2532
65f38f15
AM		 2533 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2534 {
2535 /* Make sure the corresponding function descriptor symbol is
2536 dynamic too. */
2537
2538 if (h->dynindx != -1)
2539 {
2540 struct elf_link_hash_entry *fdh;
5bd4f169 2541
65f38f15
AM		 2542 fdh = elf_link_hash_lookup (elf_hash_table (info),
2543 h->root.root.string + 1,
2544 false, false, false);
5bd4f169 2545
65f38f15
AM		 2546 if (fdh == NULL)
2547 abort ();
5bd4f169 2548
65f38f15
AM		 2549 if (fdh->dynindx == -1
2550 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2551 {
2552 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
2553 return false;
2554 }
2555 }
2556
2557 /* If this is the first .plt entry, make room for the special
2558 first entry. */
2559 s = htab->splt;
5bd4f169 2560 if (s->_raw_size == 0)
65f38f15
AM		 2561 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
2562
2563 h->plt.offset = s->_raw_size;
2564
2565 /* Make room for this entry. */
2566 s->_raw_size += PLT_ENTRY_SIZE;
2567
2568 /* Point the function at the linkage stub. This works because
2569 the only references to the function code sym are calls.
2570 Function pointer comparisons use the function descriptor. */
2571 s = htab->sglink;
2572 h->root.type = bfd_link_hash_defined;
2573 h->root.u.def.section = s;
2574 h->root.u.def.value = s->_raw_size;
2575 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2576
2577 /* Make room for global linkage code in .glink. */
2578 s->_raw_size += PPC64_ELF_GLINK_SIZE;
2579
2580 /* We also need to make an entry in the .rela.plt section. */
2581 s = htab->srelplt;
2582 s->_raw_size += sizeof (Elf64_External_Rela);
2583 }
2584 else
2585 {
2586 h->plt.offset = (bfd_vma) -1;
2587 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2588 }
2589 }
2590 else
2591 {
2592 h->plt.offset = (bfd_vma) -1;
2593 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2594 }
2595
2596 if (h->got.refcount > 0)
2597 {
2598 boolean dyn;
2599
2600 /* Make sure this symbol is output as a dynamic symbol.
2601 Undefined weak syms won't yet be marked as dynamic. */
2602 if (h->dynindx == -1
2603 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2604 {
2605 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2606 return false;
2607 }
2608
2609 s = htab->sgot;
2610 h->got.offset = s->_raw_size;
2611 s->_raw_size += 8;
2612 dyn = htab->elf.dynamic_sections_created;
2613 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2614 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2615 }
2616 else
2617 h->got.offset = (bfd_vma) -1;
2618
2619 eh = (struct ppc_link_hash_entry *) h;
2620 if (eh->dyn_relocs == NULL)
2621 return true;
2622
2623 /* In the shared -Bsymbolic case, discard space allocated for
2624 dynamic pc-relative relocs against symbols which turn out to be
2625 defined in regular objects. For the normal shared case, discard
2626 space for relocs that have become local due to symbol visibility
2627 changes. */
2628
2629 if (info->shared)
2630 {
2631 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2632 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2633 || info->symbolic))
2634 {
2635 struct ppc_dyn_relocs **pp;
2636
2637 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 2638 {
65f38f15
AM		 2639 p->count -= p->pc_count;
2640 p->pc_count = 0;
2641 if (p->count == 0)
2642 *pp = p->next;
2643 else
2644 pp = &p->next;
5bd4f169 2645 }
65f38f15
AM		 2646 }
2647 }
2648 else
2649 {
2650 /* For the non-shared case, discard space for relocs against
2651 symbols which turn out to need copy relocs or are not
2652 dynamic. */
2653
2654 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2655 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2656 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2657 || (htab->elf.dynamic_sections_created
2658 && (h->root.type == bfd_link_hash_undefweak
2659 || h->root.type == bfd_link_hash_undefined))))
2660 {
2661 /* Make sure this symbol is output as a dynamic symbol.
2662 Undefined weak syms won't yet be marked as dynamic. */
2663 if (h->dynindx == -1
2664 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2665 {
2666 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2667 return false;
2668 }
2669
2670 /* If that succeeded, we know we'll be keeping all the
2671 relocs. */
2672 if (h->dynindx != -1)
2673 goto keep;
2674 }
2675
2676 eh->dyn_relocs = NULL;
2677
2678 keep:
2679 }
2680
2681 /* Finally, allocate space. */
2682 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2683 {
2684 asection *sreloc = elf_section_data (p->sec)->sreloc;
2685 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
2686 }
2687
2688 return true;
2689}
2690
2691/* Find any dynamic relocs that apply to read-only sections. */
2692
2693static boolean
2694readonly_dynrelocs (h, inf)
2695 struct elf_link_hash_entry *h;
2696 PTR inf;
2697{
2698 struct ppc_link_hash_entry *eh;
2699 struct ppc_dyn_relocs *p;
2700
2701 eh = (struct ppc_link_hash_entry *) h;
2702 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2703 {
2704 asection *s = p->sec->output_section;
2705
2706 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2707 {
2708 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2709
2710 info->flags |= DF_TEXTREL;
2711
2712 /* Not an error, just cut short the traversal. */
2713 return false;
2714 }
2715 }
2716 return true;
2717}
2718
2719/* Set the sizes of the dynamic sections. */
2720
2721static boolean
2722ppc64_elf_size_dynamic_sections (output_bfd, info)
2723 bfd *output_bfd ATTRIBUTE_UNUSED;
2724 struct bfd_link_info *info;
2725{
2726 struct ppc_link_hash_table *htab;
2727 bfd *dynobj;
2728 asection *s;
2729 boolean relocs;
2730 bfd *ibfd;
2731
2732 htab = ppc_hash_table (info);
2733 dynobj = htab->elf.dynobj;
2734 if (dynobj == NULL)
2735 abort ();
2736
2737 if (htab->elf.dynamic_sections_created)
2738 {
2739 /* Set the contents of the .interp section to the interpreter. */
2740 if (! info->shared)
2741 {
2742 s = bfd_get_section_by_name (dynobj, ".interp");
2743 if (s == NULL)
2744 abort ();
2745 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2746 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2747 }
2748 }
2749
2750 /* Set up .got offsets for local syms, and space for local dynamic
2751 relocs. */
2752 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2753 {
2754 bfd_signed_vma *local_got;
2755 bfd_signed_vma *end_local_got;
2756 bfd_size_type locsymcount;
2757 Elf_Internal_Shdr *symtab_hdr;
2758 asection *srel;
2759
2760 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2761 continue;
2762
2763 for (s = ibfd->sections; s != NULL; s = s->next)
2764 {
2765 bfd_size_type count = elf_section_data (s)->local_dynrel;
2766
2767 if (count != 0)
2768 {
2769 srel = elf_section_data (s)->sreloc;
2770 srel->_raw_size += count * sizeof (Elf64_External_Rela);
2771 }
2772 }
2773
2774 local_got = elf_local_got_refcounts (ibfd);
2775 if (!local_got)
2776 continue;
2777
2778 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2779 locsymcount = symtab_hdr->sh_info;
2780 end_local_got = local_got + locsymcount;
2781 s = htab->sgot;
2782 srel = htab->srelgot;
2783 for (; local_got < end_local_got; ++local_got)
2784 {
2785 if (*local_got > 0)
5bd4f169 2786 {
65f38f15
AM		 2787 *local_got = s->_raw_size;
2788 s->_raw_size += 8;
2789 if (info->shared)
2790 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 2791 }
65f38f15
AM		 2792 else
2793 *local_got = (bfd_vma) -1;
2794 }
2795 }
2796
2797 /* Allocate global sym .plt and .got entries, and space for global
2798 sym dynamic relocs. */
2799 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2800
2801 /* We now have determined the sizes of the various dynamic sections.
2802 Allocate memory for them. */
2803 relocs = false;
2804 for (s = dynobj->sections; s != NULL; s = s->next)
2805 {
2806 if ((s->flags & SEC_LINKER_CREATED) == 0)
2807 continue;
2808
2809 if (s == htab->splt
2810 || s == htab->sgot
2811 || s == htab->sglink)
2812 {
2813 /* Strip this section if we don't need it; see the
2814 comment below. */
5bd4f169 2815 }
65f38f15 2816 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 2817 {
2818 if (s->_raw_size == 0)
2819 {
2820 /* If we don't need this section, strip it from the
2821 output file. This is mostly to handle .rela.bss and
2822 .rela.plt. We must create both sections in
2823 create_dynamic_sections, because they must be created
2824 before the linker maps input sections to output
2825 sections. The linker does that before
2826 adjust_dynamic_symbol is called, and it is that
2827 function which decides whether anything needs to go
2828 into these sections. */
5bd4f169
AM		 2829 }
2830 else
2831 {
65f38f15
AM		 2832 if (s != htab->srelplt)
2833 relocs = true;
5bd4f169
AM		 2834
2835 /* We use the reloc_count field as a counter if we need
2836 to copy relocs into the output file. */
2837 s->reloc_count = 0;
2838 }
2839 }
65f38f15 2840 else
5bd4f169
AM		 2841 {
2842 /* It's not one of our sections, so don't allocate space. */
2843 continue;
2844 }
2845
65f38f15 2846 if (s->_raw_size == 0)
5bd4f169
AM		 2847 {
2848 _bfd_strip_section_from_output (info, s);
2849 continue;
2850 }
2851
65f38f15
AM		 2852 /* Allocate memory for the section contents. We use bfd_zalloc
2853 here in case unused entries are not reclaimed before the
2854 section's contents are written out. This should not happen,
2855 but this way if it does, we get a R_PPC64_NONE reloc instead
2856 of garbage. */
5bd4f169 2857 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
65f38f15 2858 if (s->contents == NULL)
5bd4f169
AM		 2859 return false;
2860 }
2861
2862 if (elf_hash_table (info)->dynamic_sections_created)
2863 {
2864 /* Add some entries to the .dynamic section. We fill in the
2865 values later, in ppc64_elf_finish_dynamic_sections, but we
2866 must add the entries now so that we get the correct size for
2867 the .dynamic section. The DT_DEBUG entry is filled in by the
2868 dynamic linker and used by the debugger. */
dc810e39
AM		 2869#define add_dynamic_entry(TAG, VAL) \
2870 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2871
2872 if (!info->shared)
5bd4f169 2873 {
dc810e39 2874 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 2875 return false;
2876 }
2877
65f38f15 2878 if (htab->splt->_raw_size != 0)
5bd4f169 2879 {
dc810e39
AM		 2880 if (!add_dynamic_entry (DT_PLTGOT, 0)
2881 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2882 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2883 || !add_dynamic_entry (DT_JMPREL, 0))
5bd4f169
AM		 2884 return false;
2885 }
2886
2887 if (relocs)
2888 {
dc810e39
AM		 2889 if (!add_dynamic_entry (DT_RELA, 0)
2890 || !add_dynamic_entry (DT_RELASZ, 0)
2891 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 2892 return false;
5bd4f169 2893
65f38f15
AM		 2894 /* If any dynamic relocs apply to a read-only section,
2895 then we need a DT_TEXTREL entry. */
2896 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
5bd4f169 2897
65f38f15 2898 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 2899 {
65f38f15
AM		 2900 if (!add_dynamic_entry (DT_TEXTREL, 0))
2901 return false;
5bd4f169 2902 }
5bd4f169 2903 }
5bd4f169 2904 }
65f38f15 2905#undef add_dynamic_entry
5bd4f169
AM		 2906
2907 return true;
2908}
2909
2910/* Called after we have seen all the input files/sections, but before
2911 final symbol resolution and section placement has been determined.
2912
2913 We use this hook to provide a value for TOCstart, which we store in
2914 the output bfd elf_gp, then we call the generic ELF final link
2915 routine. */
2916
2917static boolean
2918ppc64_elf_final_link (abfd, info)
2919 bfd *abfd;
2920 struct bfd_link_info *info;
2921{
2922 if (! info->relocateable)
2923 {
2924 asection *s;
2925 bfd_vma TOCstart;
2926
2927 /* The TOC consists of sections .got, .toc, .tocbss, .plt in this
2928 order. The TOC starts where the first of these sections starts. */
2929 s = bfd_get_section_by_name (abfd, ".got");
2930 if (s == NULL)
2931 s = bfd_get_section_by_name (abfd, ".toc");
2932 if (s == NULL)
2933 s = bfd_get_section_by_name (abfd, ".tocbss");
2934 if (s == NULL)
2935 s = bfd_get_section_by_name (abfd, ".plt");
2936 if (s == NULL)
2937 {
2938 /* This may happen for
2939 o references to TOC base (SYM@toc / TOC[tc0]) without a
2940 .toc directive
2941 o bad linker script
2942 o --gc-sections and empty TOC sections
2943
2944 FIXME: Warn user? */
2945
2946 /* Look for a likely section. We probably won't even be
2947 using TOCstart. */
2948 for (s = abfd->sections; s != NULL; s = s->next)
2949 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
2950 == (SEC_ALLOC | SEC_SMALL_DATA))
2951 break;
2952 if (s == NULL)
2953 for (s = abfd->sections; s != NULL; s = s->next)
2954 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
2955 == (SEC_ALLOC | SEC_SMALL_DATA))
2956 break;
2957 if (s == NULL)
2958 for (s = abfd->sections; s != NULL; s = s->next)
2959 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
2960 break;
2961 if (s == NULL)
2962 for (s = abfd->sections; s != NULL; s = s->next)
2963 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
2964 break;
2965 }
2966
2967 TOCstart = 0;
2968 if (s != NULL)
2969 TOCstart = s->output_section->vma + s->output_offset;
2970
2971 elf_gp (abfd) = TOCstart;
2972 }
2973
65f38f15
AM		 2974 /* Invoke the regular ELF backend linker to do all the work. */
2975 return bfd_elf64_bfd_final_link (abfd, info);
5bd4f169
AM		 2976}
2977
2978/* Set up any other section flags and such that may be necessary. */
2979
2980static boolean
2981ppc64_elf_fake_sections (abfd, shdr, asect)
2982 bfd *abfd ATTRIBUTE_UNUSED;
2983 Elf64_Internal_Shdr *shdr;
2984 asection *asect;
2985{
2986 if ((asect->flags & SEC_EXCLUDE) != 0)
2987 shdr->sh_flags |= SHF_EXCLUDE;
2988
2989 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
2990 shdr->sh_type = SHT_ORDERED;
2991
2992 return true;
2993}
2994
2995/* The RELOCATE_SECTION function is called by the ELF backend linker
2996 to handle the relocations for a section.
2997
2998 The relocs are always passed as Rela structures; if the section
2999 actually uses Rel structures, the r_addend field will always be
3000 zero.
3001
3002 This function is responsible for adjust the section contents as
3003 necessary, and (if using Rela relocs and generating a
3004 relocateable output file) adjusting the reloc addend as
3005 necessary.
3006
3007 This function does not have to worry about setting the reloc
3008 address or the reloc symbol index.
3009
3010 LOCAL_SYMS is a pointer to the swapped in local symbols.
3011
3012 LOCAL_SECTIONS is an array giving the section in the input file
3013 corresponding to the st_shndx field of each local symbol.
3014
3015 The global hash table entry for the global symbols can be found
3016 via elf_sym_hashes (input_bfd).
3017
3018 When generating relocateable output, this function must handle
3019 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3020 going to be the section symbol corresponding to the output
3021 section, which means that the addend must be adjusted
3022 accordingly. */
3023
3024static boolean
3025ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
3026 contents, relocs, local_syms, local_sections)
3027 bfd *output_bfd;
3028 struct bfd_link_info *info;
3029 bfd *input_bfd;
3030 asection *input_section;
3031 bfd_byte *contents;
3032 Elf_Internal_Rela *relocs;
3033 Elf_Internal_Sym *local_syms;
3034 asection **local_sections;
3035{
65f38f15 3036 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3037 Elf_Internal_Shdr *symtab_hdr;
3038 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 3039 Elf_Internal_Rela *rel;
3040 Elf_Internal_Rela *relend;
5bd4f169
AM		 3041 bfd_vma *local_got_offsets;
3042 bfd_vma TOCstart;
3043 boolean ret = true;
5bd4f169 3044
65f38f15 3045 /* Initialize howto table if needed. */
5bd4f169 3046 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 3047 ppc_howto_init ();
3048
65f38f15 3049 htab = ppc_hash_table (info);
5bd4f169 3050 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 3051 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 3052 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3053 sym_hashes = elf_sym_hashes (input_bfd);
65f38f15 3054
5bd4f169
AM		 3055 rel = relocs;
3056 relend = relocs + input_section->reloc_count;
3057 for (; rel < relend; rel++)
3058 {
3059 enum elf_ppc_reloc_type r_type;
3060 bfd_vma offset;
3061 bfd_vma addend;
3062 bfd_reloc_status_type r;
3063 Elf_Internal_Sym *sym;
3064 asection *sec;
3065 struct elf_link_hash_entry *h;
3066 const char *sym_name;
5bd4f169
AM		 3067 unsigned long r_symndx;
3068 bfd_vma relocation;
65f38f15 3069 boolean unresolved_reloc;
dc810e39 3070 long insn;
5bd4f169
AM		 3071
3072 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169
AM		 3073 r_symndx = ELF64_R_SYM (rel->r_info);
3074
3075 if (info->relocateable)
3076 {
3077 /* This is a relocatable link. We don't have to change
3078 anything, unless the reloc is against a section symbol,
3079 in which case we have to adjust according to where the
3080 section symbol winds up in the output section. */
3081 if (r_symndx < symtab_hdr->sh_info)
3082 {
3083 sym = local_syms + r_symndx;
3084 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3085 {
3086 sec = local_sections[r_symndx];
65f38f15 3087 rel->r_addend += sec->output_offset + sym->st_value;
5bd4f169
AM		 3088 }
3089 }
5bd4f169
AM		 3090 continue;
3091 }
3092
3093 /* This is a final link. */
3094
65f38f15
AM		 3095 offset = rel->r_offset;
3096 addend = rel->r_addend;
3097 r = bfd_reloc_other;
3098 sym = (Elf_Internal_Sym *) 0;
3099 sec = (asection *) 0;
3100 h = (struct elf_link_hash_entry *) 0;
3101 sym_name = (const char *) 0;
3102 unresolved_reloc = false;
3103
5bd4f169
AM		 3104 if (r_type == R_PPC64_TOC)
3105 {
3106 /* Relocation value is TOC base. Symbol is ignored. */
3107 relocation = TOCstart + TOC_BASE_OFF;
3108 }
3109 else if (r_symndx < symtab_hdr->sh_info)
3110 {
3111 /* It's a local symbol. */
3112 sym = local_syms + r_symndx;
3113 sec = local_sections[r_symndx];
3114 sym_name = "<local symbol>";
3115
3116 relocation = (sec->output_section->vma
3117 + sec->output_offset
3118 + sym->st_value);
3119 }
3120 else
3121 {
3122 /* It's a global symbol. */
3123 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3124 while (h->root.type == bfd_link_hash_indirect
3125 || h->root.type == bfd_link_hash_warning)
3126 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3127 sym_name = h->root.root.string;
65f38f15 3128 relocation = 0;
5bd4f169
AM		 3129 if (h->root.type == bfd_link_hash_defined
3130 || h->root.type == bfd_link_hash_defweak)
3131 {
3132 sec = h->root.u.def.section;
65f38f15
AM		 3133 if (sec->output_section == NULL)
3134 /* Set a flag that will be cleared later if we find a
3135 relocation value for this symbol. output_section
3136 is typically NULL for symbols satisfied by a shared
3137 library. */
3138 unresolved_reloc = true;
5bd4f169
AM		 3139 else
3140 relocation = (h->root.u.def.value
3141 + sec->output_section->vma
3142 + sec->output_offset);
3143 }
3144 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 3145 ;
671bae9c 3146 else if (info->shared
65f38f15
AM		 3147 && (!info->symbolic || info->allow_shlib_undefined)
3148 && !info->no_undefined
3149 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3150 ;
5bd4f169
AM		 3151 else
3152 {
3153 if (! ((*info->callbacks->undefined_symbol)
3154 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 3155 offset, (!info->shared
3156 || info->no_undefined
3157 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169
AM		 3158 return false;
3159 relocation = 0;
3160 }
3161 }
3162
65f38f15
AM		 3163 /* First handle relocations that tweak non-addend part of insn. */
3164 switch (r_type)
5bd4f169
AM		 3165 {
3166 default:
65f38f15 3167 break;
5bd4f169 3168
65f38f15
AM		 3169 /* Branch taken prediction relocations. */
3170 case R_PPC64_ADDR14_BRTAKEN:
3171 case R_PPC64_REL14_BRTAKEN:
3172 insn = bfd_get_32 (output_bfd, contents + offset);
3173 if ((relocation - offset) & 0x8000)
3174 insn &= ~BRANCH_PREDICT_BIT;
3175 else
3176 insn |= BRANCH_PREDICT_BIT;
3177 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3178 break;
3179
3180 /* Branch not taken predicition relocations. */
3181 case R_PPC64_ADDR14_BRNTAKEN:
3182 case R_PPC64_REL14_BRNTAKEN:
3183 insn = bfd_get_32 (output_bfd, contents + offset);
3184 if ((relocation - offset) & 0x8000)
3185 insn |= BRANCH_PREDICT_BIT;
3186 else
3187 insn &= ~BRANCH_PREDICT_BIT;
3188 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3189 break;
5bd4f169 3190
65f38f15
AM		 3191 case R_PPC64_REL24:
3192 case R_PPC64_ADDR24:
5bd4f169 3193 /* An ADDR24 or REL24 branching to a linkage function may be
65f38f15 3194 followed by a nop that we have to replace with a ld in
5bd4f169
AM		 3195 order to restore the TOC base pointer. Only calls to
3196 shared objects need to alter the TOC base. These are
3197 recognized by their need for a PLT entry. */
3198 if (h != NULL
3199 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
3200 /* Make sure that there really is an instruction after
3201 the branch that we can decode. */
65f38f15 3202 && offset + 8 <= input_section->_cooked_size)
5bd4f169
AM		 3203 {
3204 bfd_byte *pnext;
5bd4f169 3205
65f38f15 3206 pnext = contents + offset + 4;
5bd4f169
AM		 3207 insn = bfd_get_32 (input_bfd, pnext);
3208
3209 if (insn == 0x60000000 /* nop (ori r0,r0,0) */
3210 || insn == 0x4def7b82 /* cror 15,15,15 */
dc810e39 3211 || insn == 0x4ffffb82) /* cror 31,31,31 */
5bd4f169 3212 {
dc810e39
AM		 3213 bfd_put_32 (input_bfd,
3214 (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
3215 pnext);
5bd4f169
AM		 3216 }
3217 }
65f38f15
AM		 3218 break;
3219 }
5bd4f169 3220
65f38f15
AM		 3221 /* Set `addend'. */
3222 switch (r_type)
3223 {
3224 default:
3225 (*_bfd_error_handler)
3226 (_("%s: unknown relocation type %d for symbol %s"),
3227 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 3228
65f38f15
AM		 3229 bfd_set_error (bfd_error_bad_value);
3230 ret = false;
3231 continue;
5bd4f169 3232
65f38f15
AM		 3233 case R_PPC64_NONE:
3234 case R_PPC_GNU_VTINHERIT:
3235 case R_PPC_GNU_VTENTRY:
3236 continue;
5bd4f169
AM		 3237
3238 /* GOT16 relocations. Like an ADDR16 using the symbol's
3239 address in the GOT as relocation value instead of the
3240 symbols value itself. Also, create a GOT entry for the
3241 symbol and put the symbol value there. */
65f38f15
AM		 3242 case R_PPC64_GOT16:
3243 case R_PPC64_GOT16_LO:
3244 case R_PPC64_GOT16_HI:
3245 case R_PPC64_GOT16_HA:
3246 case R_PPC64_GOT16_DS:
3247 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 3248 {
3249 /* Relocation is to the entry for this symbol in the global
3250 offset table. */
3251 bfd_vma off;
65f38f15
AM		 3252
3253 if (htab->sgot == NULL)
3254 abort ();
5bd4f169
AM		 3255
3256 if (h != NULL)
3257 {
65f38f15 3258 boolean dyn;
5bd4f169 3259
65f38f15
AM		 3260 off = h->got.offset;
3261 dyn = htab->elf.dynamic_sections_created;
3262 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 3263 || (info->shared
65f38f15
AM		 3264 && (info->symbolic
3265 || h->dynindx == -1
3266 || (h->elf_link_hash_flags
3267 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 3268 && (h->elf_link_hash_flags
3269 & ELF_LINK_HASH_DEF_REGULAR)))
3270 {
3271 /* This is actually a static link, or it is a
3272 -Bsymbolic link and the symbol is defined
65f38f15
AM		 3273 locally, or the symbol was forced to be local
3274 because of a version file. We must initialize
3275 this entry in the global offset table. Since the
3276 offset must always be a multiple of 8, we use the
3277 least significant bit to record whether we have
5bd4f169
AM		 3278 initialized it already.
3279
65f38f15 3280 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 3281 relocation entry to initialize the value. This
3282 is done in the finish_dynamic_symbol routine. */
3283 if ((off & 1) != 0)
3284 off &= ~1;
3285 else
3286 {
3287 bfd_put_64 (output_bfd, relocation,
65f38f15 3288 htab->sgot->contents + off);
5bd4f169
AM		 3289 h->got.offset |= 1;
3290 }
3291 }
65f38f15
AM		 3292 else
3293 unresolved_reloc = false;
5bd4f169
AM		 3294 }
3295 else
3296 {
65f38f15
AM		 3297 if (local_got_offsets == NULL)
3298 abort ();
5bd4f169
AM		 3299
3300 off = local_got_offsets[r_symndx];
3301
65f38f15 3302 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 3303 the least significant bit to record whether we have
3304 already processed this entry. */
3305 if ((off & 1) != 0)
3306 off &= ~1;
3307 else
3308 {
65f38f15
AM		 3309 bfd_put_64 (output_bfd, relocation,
3310 htab->sgot->contents + off);
5bd4f169
AM		 3311
3312 if (info->shared)
3313 {
5bd4f169 3314 Elf_Internal_Rela outrel;
65f38f15 3315 Elf64_External_Rela *loc;
5bd4f169
AM		 3316
3317 /* We need to generate a R_PPC64_RELATIVE reloc
3318 for the dynamic linker. */
65f38f15
AM		 3319 outrel.r_offset = (htab->sgot->output_section->vma
3320 + htab->sgot->output_offset
5bd4f169
AM		 3321 + off);
3322 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3323 outrel.r_addend = relocation;
65f38f15
AM		 3324 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3325 loc += htab->srelgot->reloc_count++;
3326 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 3327 }
3328
3329 local_got_offsets[r_symndx] |= 1;
3330 }
3331 }
3332
65f38f15
AM		 3333 if (off >= (bfd_vma) -2)
3334 abort ();
3335
3336 relocation = htab->sgot->output_offset + off;
3337
5bd4f169
AM		 3338 /* TOC base (r2) is TOC start plus 0x8000. */
3339 addend -= TOC_BASE_OFF;
5bd4f169 3340 }
65f38f15
AM		 3341 break;
3342
3343 case R_PPC64_PLT16_HA:
3344 case R_PPC64_PLT16_HI:
3345 case R_PPC64_PLT16_LO:
3346 case R_PPC64_PLT32:
3347 case R_PPC64_PLT64:
3348 /* Relocation is to the entry for this symbol in the
3349 procedure linkage table. */
3350
3351 /* Resolve a PLT reloc against a local symbol directly,
3352 without using the procedure linkage table. */
3353 if (h == NULL)
3354 break;
3355
3356 if (h->plt.offset == (bfd_vma) -1
3357 || htab->splt == NULL)
3358 {
3359 /* We didn't make a PLT entry for this symbol. This
3360 happens when statically linking PIC code, or when
3361 using -Bsymbolic. */
3362 break;
3363 }
3364
3365 relocation = (htab->splt->output_section->vma
3366 + htab->splt->output_offset
3367 + h->plt.offset);
3368 unresolved_reloc = false;
3369 break;
5bd4f169
AM		 3370
3371 /* TOC16 relocs. We want the offset relative to the TOC base,
3372 which is the address of the start of the TOC plus 0x8000.
3373 The TOC consists of sections .got, .toc, .tocbss, and .plt,
3374 in this order. */
3375
65f38f15
AM		 3376 case R_PPC64_TOC16:
3377 case R_PPC64_TOC16_LO:
3378 case R_PPC64_TOC16_HI:
3379 case R_PPC64_TOC16_DS:
3380 case R_PPC64_TOC16_LO_DS:
3381 case R_PPC64_TOC16_HA:
5bd4f169 3382 /* Only .got, .toc and *UND* symbols are allowed. */
65f38f15
AM		 3383 BFD_ASSERT (sec != (asection *) 0
3384 && (bfd_is_und_section (sec)
3385 || strcmp (bfd_get_section_name (abfd, sec),
3386 ".toc") == 0
3387 || strcmp (bfd_get_section_name (abfd, sec),
3388 ".got") == 0));
5bd4f169
AM		 3389
3390 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 3391 break;
3392
3393 /* Relocate against the beginning of the section. */
65f38f15
AM		 3394 case R_PPC64_SECTOFF:
3395 case R_PPC64_SECTOFF_LO:
3396 case R_PPC64_SECTOFF_HI:
3397 case R_PPC64_SECTOFF_DS:
3398 case R_PPC64_SECTOFF_LO_DS:
3399 case R_PPC64_SECTOFF_HA:
3400 if (sec != (asection *) 0)
3401 addend -= sec->output_section->vma;
5bd4f169
AM		 3402 break;
3403
65f38f15
AM		 3404 /* Relocations that may need to be propagated if this is a
3405 dynamic object. */
3406 case R_PPC64_REL14:
3407 case R_PPC64_REL14_BRNTAKEN:
3408 case R_PPC64_REL14_BRTAKEN:
3409 case R_PPC64_REL24:
3410 case R_PPC64_REL32:
3411 case R_PPC64_REL64:
3412 case R_PPC64_ADDR14:
3413 case R_PPC64_ADDR14_BRNTAKEN:
3414 case R_PPC64_ADDR14_BRTAKEN:
3415 case R_PPC64_ADDR16:
3416 case R_PPC64_ADDR16_DS:
3417 case R_PPC64_ADDR16_HA:
3418 case R_PPC64_ADDR16_HI:
3419 case R_PPC64_ADDR16_HIGHER:
3420 case R_PPC64_ADDR16_HIGHERA:
3421 case R_PPC64_ADDR16_HIGHEST:
3422 case R_PPC64_ADDR16_HIGHESTA:
3423 case R_PPC64_ADDR16_LO:
3424 case R_PPC64_ADDR16_LO_DS:
3425 case R_PPC64_ADDR24:
3426 case R_PPC64_ADDR30:
3427 case R_PPC64_ADDR32:
3428 case R_PPC64_ADDR64:
3429 case R_PPC64_UADDR16:
3430 case R_PPC64_UADDR32:
3431 case R_PPC64_UADDR64:
3432 case R_PPC64_TOC:
3433 if ((info->shared
3434 && (input_section->flags & SEC_ALLOC) != 0
3435 && (IS_ABSOLUTE_RELOC (r_type)
3436 || (h != NULL
3437 && h->dynindx != -1
3438 && (! info->symbolic
3439 || (h->elf_link_hash_flags
3440 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3441 || (!info->shared
3442 && (input_section->flags & SEC_ALLOC) != 0
3443 && h != NULL
3444 && h->dynindx != -1
3445 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3446 && (((h->elf_link_hash_flags
3447 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3448 && (h->elf_link_hash_flags
3449 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3450 || h->root.type == bfd_link_hash_undefweak
3451 || h->root.type == bfd_link_hash_undefined)))
3452 {
3453 Elf_Internal_Rela outrel;
3454 boolean skip, relocate;
3455 asection *sreloc;
3456 Elf64_External_Rela *loc;
3457
3458 /* When generating a dynamic object, these relocations
3459 are copied into the output file to be resolved at run
3460 time. */
3461
3462 skip = false;
3463
3464 if (elf_section_data (input_section)->stab_info == NULL)
3465 outrel.r_offset = offset;
3466 else
3467 {
3468 bfd_vma off;
3469
3470 off = (_bfd_stab_section_offset
3471 (output_bfd, htab->elf.stab_info, input_section,
3472 &elf_section_data (input_section)->stab_info,
3473 offset));
3474 if (off == (bfd_vma) -1)
3475 skip = true;
3476 outrel.r_offset = off;
3477 }
3478
3479 outrel.r_offset += (input_section->output_section->vma
3480 + input_section->output_offset);
3481 outrel.r_addend = addend;
3482
3483 if (skip)
3484 {
3485 relocate = false;
3486 memset (&outrel, 0, sizeof outrel);
3487 }
3488 else if (h != NULL
3489 && h->dynindx != -1
3490 && (!IS_ABSOLUTE_RELOC (r_type)
3491 || !info->shared
3492 || !info->symbolic
3493 || (h->elf_link_hash_flags
3494 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3495 {
3496 relocate = false;
3497 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
3498 }
3499 else
3500 {
3501 /* This symbol is local, or marked to become local. */
3502 outrel.r_addend += relocation;
3503 relocate = true;
3504 if (r_type == R_PPC64_ADDR64)
3505 {
3506 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3507 }
3508 else
3509 {
3510 long indx = 0;
3511
3512 if (r_type == R_PPC64_TOC || bfd_is_abs_section (sec))
3513 ;
3514 else if (sec == NULL || sec->owner == NULL)
3515 {
3516 bfd_set_error (bfd_error_bad_value);
3517 return false;
3518 }
3519 else
3520 {
3521 asection *osec;
3522
3523 osec = sec->output_section;
3524 indx = elf_section_data (osec)->dynindx;
3525
3526 /* We are turning this relocation into one
3527 against a section symbol, so subtract out
3528 the output section's address but not the
3529 offset of the input section in the output
3530 section. */
3531 outrel.r_addend -= osec->vma;
3532 }
3533
3534 outrel.r_info = ELF64_R_INFO (indx, r_type);
3535 }
3536 }
3537
3538 sreloc = elf_section_data (input_section)->sreloc;
3539 if (sreloc == NULL)
3540 abort ();
3541
3542 loc = (Elf64_External_Rela *) sreloc->contents;
3543 loc += sreloc->reloc_count++;
3544 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3545
3546 /* If this reloc is against an external symbol, it will
3547 be computed at runtime, so there's no need to do
3548 anything now. */
3549 if (! relocate)
3550 continue;
3551 }
5bd4f169
AM		 3552 break;
3553
65f38f15
AM		 3554 case R_PPC64_COPY:
3555 case R_PPC64_GLOB_DAT:
3556 case R_PPC64_JMP_SLOT:
3557 case R_PPC64_RELATIVE:
3558 /* We shouldn't ever see these dynamic relocs in relocatable
3559 files. */
3560 /* Fall thru */
3561
3562 case R_PPC64_PLTGOT16:
3563 case R_PPC64_PLTGOT16_DS:
3564 case R_PPC64_PLTGOT16_HA:
3565 case R_PPC64_PLTGOT16_HI:
3566 case R_PPC64_PLTGOT16_LO:
3567 case R_PPC64_PLTGOT16_LO_DS:
3568 case R_PPC64_PLTREL32:
3569 case R_PPC64_PLTREL64:
3570 /* These ones haven't been implemented yet. */
3571
3572 (*_bfd_error_handler)
3573 (_("%s: Relocation %s is not supported for symbol %s."),
3574 bfd_archive_filename (input_bfd),
3575 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 3576
3577 bfd_set_error (bfd_error_invalid_operation);
3578 ret = false;
3579 continue;
65f38f15 3580 }
5bd4f169 3581
65f38f15
AM		 3582 /* Do any further special processing. */
3583 switch (r_type)
3584 {
3585 default:
3586 break;
3587
3588 case R_PPC64_ADDR16_HA:
3589 case R_PPC64_ADDR16_HIGHERA:
3590 case R_PPC64_ADDR16_HIGHESTA:
3591 case R_PPC64_PLT16_HA:
3592 case R_PPC64_TOC16_HA:
3593 case R_PPC64_SECTOFF_HA:
3594 /* It's just possible that this symbol is a weak symbol
3595 that's not actually defined anywhere. In that case,
3596 'sec' would be NULL, and we should leave the symbol
3597 alone (it will be set to zero elsewhere in the link). */
3598 if (sec != NULL)
3599 /* Add 0x10000 if sign bit in 0:15 is set. */
3600 addend += ((relocation + addend) & 0x8000) << 1;
3601 break;
3602
3603 case R_PPC64_ADDR16_DS:
3604 case R_PPC64_ADDR16_LO_DS:
3605 case R_PPC64_GOT16_DS:
3606 case R_PPC64_GOT16_LO_DS:
3607 case R_PPC64_PLT16_LO_DS:
3608 case R_PPC64_SECTOFF_DS:
3609 case R_PPC64_SECTOFF_LO_DS:
3610 case R_PPC64_TOC16_DS:
3611 case R_PPC64_TOC16_LO_DS:
3612 case R_PPC64_PLTGOT16_DS:
3613 case R_PPC64_PLTGOT16_LO_DS:
3614 if (((relocation + addend) & 3) != 0)
3615 {
3616 (*_bfd_error_handler)
3617 (_("%s: error: relocation %s not a multiple of 4"),
3618 bfd_archive_filename (input_bfd),
3619 ppc64_elf_howto_table[(int) r_type]->name);
3620 bfd_set_error (bfd_error_bad_value);
3621 ret = false;
3622 continue;
3623 }
3624 break;
5bd4f169
AM		 3625 }
3626
65f38f15
AM		 3627 /* FIXME: Why do we allow debugging sections to escape this error?
3628 More importantly, why do we not emit dynamic relocs above in
3629 debugging sections (which are ! SEC_ALLOC)? If we had
3630 emitted the dynamic reloc, we could remove the fudge here. */
3631 if (unresolved_reloc
3632 && !(info->shared
3633 && (input_section->flags & SEC_DEBUGGING) != 0
3634 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3635 (*_bfd_error_handler)
3636 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3637 bfd_archive_filename (input_bfd),
3638 bfd_get_section_name (input_bfd, input_section),
3639 (long) rel->r_offset,
3640 h->root.root.string);
5bd4f169 3641
65f38f15 3642 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 3643 input_bfd,
3644 input_section,
3645 contents,
3646 offset,
3647 relocation,
3648 addend);
3649
3650 if (r == bfd_reloc_ok)
3651 ;
3652 else if (r == bfd_reloc_overflow)
3653 {
3654 const char *name;
3655
3656 if (h != NULL)
3657 {
3658 if (h->root.type == bfd_link_hash_undefweak
65f38f15 3659 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 3660 {
3661 /* Assume this is a call protected by other code that
3662 detects the symbol is undefined. If this is the case,
3663 we can safely ignore the overflow. If not, the
3664 program is hosed anyway, and a little warning isn't
3665 going to help. */
3666
3667 continue;
3668 }
3669
3670 name = h->root.root.string;
3671 }
3672 else
3673 {
3674 name = bfd_elf_string_from_elf_section (input_bfd,
3675 symtab_hdr->sh_link,
3676 sym->st_name);
3677 if (name == NULL)
3678 continue;
3679 if (*name == '\0')
3680 name = bfd_section_name (input_bfd, sec);
3681 }
3682
65f38f15
AM		 3683 if (! ((*info->callbacks->reloc_overflow)
3684 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
3685 (bfd_vma) 0, input_bfd, input_section, offset)))
5bd4f169
AM		 3686 return false;
3687 }
3688 else
3689 ret = false;
3690 }
3691
5bd4f169
AM		 3692 return ret;
3693}
3694
3695/* Finish up dynamic symbol handling. We set the contents of various
3696 dynamic sections here. */
3697
3698static boolean
3699ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
3700 bfd *output_bfd;
3701 struct bfd_link_info *info;
3702 struct elf_link_hash_entry *h;
3703 Elf_Internal_Sym *sym;
3704{
65f38f15 3705 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3706 bfd *dynobj;
3707
65f38f15
AM		 3708 htab = ppc_hash_table (info);
3709 dynobj = htab->elf.dynobj;
5bd4f169
AM		 3710
3711 if (h->plt.offset != (bfd_vma) -1)
3712 {
5bd4f169 3713 struct elf_link_hash_entry *funcdesc_h;
65f38f15
AM		 3714 Elf_Internal_Rela rela;
3715 Elf64_External_Rela *loc;
5bd4f169
AM		 3716
3717 /* This symbol has an entry in the procedure linkage table. Set
3718 it up. */
3719
65f38f15
AM		 3720 if (h->dynindx == -1
3721 || htab->splt == NULL
3722 || htab->srelplt == NULL
3723 || htab->sglink == NULL
3724 || h->root.root.string[0] != '.'
3725 || h->root.root.string[1] == '\0')
3726 abort ();
3727
3728 /* Find its corresponding function descriptor.
3729 ppc64_elf_adjust_dynamic_symbol has already set it up for us. */
5bd4f169 3730
65f38f15
AM		 3731 funcdesc_h = elf_link_hash_lookup (elf_hash_table (info),
3732 h->root.root.string + 1,
3733 false, false, false);
3734
3735 if (funcdesc_h == NULL || funcdesc_h->dynindx == -1)
3736 abort ();
3737
3738 /* Create a JMP_SLOT reloc to inform the dynamic linker to
3739 fill in the PLT entry. */
5bd4f169 3740
65f38f15
AM		 3741 rela.r_offset = (htab->splt->output_section->vma
3742 + htab->splt->output_offset
3743 + h->plt.offset);
3744 rela.r_info = ELF64_R_INFO (funcdesc_h->dynindx, R_PPC64_JMP_SLOT);
3745 rela.r_addend = 0;
3746
3747 loc = (Elf64_External_Rela *) htab->srelplt->contents;
3748 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
3749 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169 3750
65f38f15
AM		 3751 /* We need to create a linkage function. */
3752 if (h->root.u.def.section == htab->sglink)
5bd4f169
AM		 3753 {
3754 bfd_byte *p;
3755 bfd_vma pltoff;
3756 const unsigned int *stub;
3757
3758 /* Where to write it. */
3759 p = h->root.u.def.section->contents + h->root.u.def.value;
3760
3761 /* The function descriptor is in the PLT. */
65f38f15
AM		 3762 pltoff = htab->splt->output_section->vma
3763 + htab->splt->output_section->output_offset
5bd4f169
AM		 3764 + h->plt.offset
3765 - elf_gp (output_bfd) - TOC_BASE_OFF;
3766
3767 if (pltoff + 0x8000 > 0xffff)
3768 {
3769 (*_bfd_error_handler)
3770 (_("linkage table overflow against `%s'"),
3771 h->root.root.string);
3772 }
3773
3774 /* Write it out. */
3775 stub = ppc64_elf_glink_code;
3776 bfd_put_32 (output_bfd, *stub | (pltoff & 0xfffc), p);
3777 while (p += 4, ++stub < (ppc64_elf_glink_code
3778 + (sizeof (ppc64_elf_glink_code)
3779 / sizeof (*ppc64_elf_glink_code))));
3780 {
dc810e39 3781 bfd_put_32 (output_bfd, (bfd_vma) *stub, p);
5bd4f169 3782 }
5bd4f169 3783 }
65f38f15
AM		 3784 else
3785 abort ();
5bd4f169
AM		 3786 }
3787
3788 if (h->got.offset != (bfd_vma) -1)
3789 {
5bd4f169 3790 Elf_Internal_Rela rela;
65f38f15 3791 Elf64_External_Rela *loc;
5bd4f169
AM		 3792
3793 /* This symbol has an entry in the global offset table. Set it
3794 up. */
3795
65f38f15
AM		 3796 if (htab->sgot == NULL || htab->srelgot == NULL)
3797 abort ();
5bd4f169 3798
65f38f15
AM		 3799 rela.r_offset = (htab->sgot->output_section->vma
3800 + htab->sgot->output_offset
dc810e39 3801 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 3802
65f38f15
AM		 3803 /* If this is a static link, or it is a -Bsymbolic link and the
3804 symbol is defined locally or was forced to be local because
3805 of a version file, we just want to emit a RELATIVE reloc.
3806 The entry in the global offset table will already have been
3807 initialized in the relocate_section function. */
5bd4f169 3808 if (info->shared
65f38f15
AM		 3809 && (info->symbolic
3810 || h->dynindx == -1
3811 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 3812 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3813 {
65f38f15 3814 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 3815 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3816 rela.r_addend = (h->root.u.def.value
3817 + h->root.u.def.section->output_section->vma
3818 + h->root.u.def.section->output_offset);
3819 }
3820 else
3821 {
3822 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 3823 bfd_put_64 (output_bfd, (bfd_vma) 0,
3824 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 3825 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
3826 rela.r_addend = 0;
3827 }
3828
65f38f15
AM		 3829 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3830 loc += htab->srelgot->reloc_count++;
3831 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 3832 }
3833
3834 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3835 {
5bd4f169 3836 Elf_Internal_Rela rela;
65f38f15 3837 Elf64_External_Rela *loc;
5bd4f169 3838
65f38f15 3839 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 3840
65f38f15
AM		 3841 if (h->dynindx == -1
3842 || (h->root.type != bfd_link_hash_defined
3843 && h->root.type != bfd_link_hash_defweak)
3844 || htab->srelbss == NULL)
3845 abort ();
5bd4f169
AM		 3846
3847 rela.r_offset = (h->root.u.def.value
3848 + h->root.u.def.section->output_section->vma
3849 + h->root.u.def.section->output_offset);
3850 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
3851 rela.r_addend = 0;
65f38f15
AM		 3852 loc = (Elf64_External_Rela *) htab->srelbss->contents;
3853 loc += htab->srelbss->reloc_count++;
3854 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 3855 }
3856
5bd4f169
AM		 3857 /* Mark some specially defined symbols as absolute. */
3858 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
3859 sym->st_shndx = SHN_ABS;
3860
3861 return true;
3862}
3863
65f38f15
AM		 3864/* Used to decide how to sort relocs in an optimal manner for the
3865 dynamic linker, before writing them out. */
3866
3867static enum elf_reloc_type_class
3868ppc64_elf_reloc_type_class (rela)
3869 const Elf_Internal_Rela *rela;
3870{
a33d1f77
AM		 3871 enum elf_ppc_reloc_type r_type;
3872
3873 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
3874 switch (r_type)
65f38f15
AM		 3875 {
3876 case R_PPC64_RELATIVE:
3877 return reloc_class_relative;
3878 case R_PPC64_JMP_SLOT:
3879 return reloc_class_plt;
3880 case R_PPC64_COPY:
3881 return reloc_class_copy;
3882 default:
3883 return reloc_class_normal;
3884 }
3885}
3886
5bd4f169
AM		 3887/* Finish up the dynamic sections. */
3888
3889static boolean
3890ppc64_elf_finish_dynamic_sections (output_bfd, info)
3891 bfd *output_bfd;
3892 struct bfd_link_info *info;
3893{
65f38f15
AM		 3894 struct ppc_link_hash_table *htab;
3895 bfd *dynobj;
5bd4f169 3896 asection *sdyn;
5bd4f169 3897
65f38f15
AM		 3898 htab = ppc_hash_table (info);
3899 dynobj = htab->elf.dynobj;
5bd4f169
AM		 3900 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3901
65f38f15 3902 if (htab->elf.dynamic_sections_created)
5bd4f169 3903 {
5bd4f169
AM		 3904 Elf64_External_Dyn *dyncon, *dynconend;
3905
65f38f15
AM		 3906 if (sdyn == NULL || htab->sgot == NULL)
3907 abort ();
5bd4f169
AM		 3908
3909 dyncon = (Elf64_External_Dyn *) sdyn->contents;
3910 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
3911 for (; dyncon < dynconend; dyncon++)
3912 {
3913 Elf_Internal_Dyn dyn;
5bd4f169
AM		 3914
3915 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
3916
3917 switch (dyn.d_tag)
3918 {
65f38f15
AM		 3919 default:
3920 continue;
5bd4f169 3921
65f38f15
AM		 3922 case DT_PLTGOT:
3923 dyn.d_un.d_ptr = htab->splt->output_section->vma;
3924 break;
3925
3926 case DT_JMPREL:
3927 dyn.d_un.d_ptr = htab->srelplt->output_section->vma;
3928 break;
5bd4f169 3929
65f38f15
AM		 3930 case DT_PLTRELSZ:
3931 if (htab->srelplt->output_section->_cooked_size != 0)
3932 dyn.d_un.d_val = htab->srelplt->output_section->_cooked_size;
5bd4f169 3933 else
65f38f15
AM		 3934 dyn.d_un.d_val = htab->srelplt->output_section->_raw_size;
3935 break;
5bd4f169 3936 }
5bd4f169 3937
65f38f15 3938 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 3939 }
5bd4f169
AM		 3940 }
3941
3942 return true;
3943}
3944
3945#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
3946#define TARGET_LITTLE_NAME "elf64-powerpcle"
3947#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
3948#define TARGET_BIG_NAME "elf64-powerpc"
3949#define ELF_ARCH bfd_arch_powerpc
3950#define ELF_MACHINE_CODE EM_PPC64
3951#define ELF_MAXPAGESIZE 0x10000
3952#define elf_info_to_howto ppc64_elf_info_to_howto
3953
3954#ifdef EM_CYGNUS_POWERPC
3955#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3956#endif
3957
3958#ifdef EM_PPC_OLD
3959#define ELF_MACHINE_ALT2 EM_PPC_OLD
3960#endif
3961
3962#define elf_backend_want_got_sym 0
3963#define elf_backend_want_plt_sym 0
3964#define elf_backend_plt_alignment 3
3965#define elf_backend_plt_not_loaded 1
3966#define elf_backend_got_symbol_offset 0
3967#define elf_backend_got_header_size 0
3968#define elf_backend_can_gc_sections 1
65f38f15 3969#define elf_backend_can_refcount 1
5bd4f169
AM		 3970
3971#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
3972
65f38f15
AM		 3973#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
3974#define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
3975#define bfd_elf64_bfd_copy_private_bfd_data ppc64_elf_copy_private_bfd_data
3976#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
3977#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
3978#define bfd_elf64_bfd_final_link ppc64_elf_final_link
3979
3980#define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
3981#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
3982#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
3983#define elf_backend_check_relocs ppc64_elf_check_relocs
3984#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
3985#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
3986#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
3987#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
3988#define elf_backend_fake_sections ppc64_elf_fake_sections
3989#define elf_backend_relocate_section ppc64_elf_relocate_section
3990#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
3991#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
3992#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 3993
3994#include "elf64-target.h"
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