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* elf-bfd.h (elf_backend_data <elf_backend_hide_symbol>): Add
[thirdparty/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
5d1634d7 2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
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"
5d1634d7 31#include "elf64-ppc.h"
5bd4f169
AM		 32
33#define USE_RELA /* we want RELA relocations, not REL. */
34
35
36static void ppc_howto_init
37 PARAMS ((void));
38static reloc_howto_type *ppc64_elf_reloc_type_lookup
39 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
40static void ppc64_elf_info_to_howto
41 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
42static bfd_reloc_status_type ppc64_elf_addr16_ha_reloc
43 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
44static boolean ppc64_elf_set_private_flags
45 PARAMS ((bfd *, flagword));
5bd4f169
AM		 46static boolean ppc64_elf_merge_private_bfd_data
47 PARAMS ((bfd *, bfd *));
48static boolean ppc64_elf_section_from_shdr
49 PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
65f38f15
AM		 50static struct bfd_hash_entry *link_hash_newfunc
51 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
52static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
53 PARAMS ((bfd *));
54static boolean create_got_section
55 PARAMS ((bfd *, struct bfd_link_info *));
5bd4f169
AM		 56static boolean ppc64_elf_create_dynamic_sections
57 PARAMS ((bfd *, struct bfd_link_info *));
65f38f15
AM		 58static void ppc64_elf_copy_indirect_symbol
59 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
5bd4f169
AM		 60static boolean ppc64_elf_check_relocs
61 PARAMS ((bfd *, struct bfd_link_info *, asection *,
62 const Elf_Internal_Rela *));
63static asection * ppc64_elf_gc_mark_hook
64 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
65 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
66static boolean ppc64_elf_gc_sweep_hook
67 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
68 const Elf_Internal_Rela *relocs));
69static boolean ppc64_elf_adjust_dynamic_symbol
70 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
65f38f15
AM		 71static boolean allocate_dynrelocs
72 PARAMS ((struct elf_link_hash_entry *, PTR));
73static boolean readonly_dynrelocs
5bd4f169 74 PARAMS ((struct elf_link_hash_entry *, PTR));
65f38f15
AM		 75static enum elf_reloc_type_class ppc64_elf_reloc_type_class
76 PARAMS ((const Elf_Internal_Rela *));
5bd4f169
AM		 77static boolean ppc64_elf_size_dynamic_sections
78 PARAMS ((bfd *, struct bfd_link_info *));
5d1634d7
AM		 79static bfd_byte *build_plt_stub
80 PARAMS ((bfd *, bfd_byte *, int, int));
81static boolean build_one_stub
82 PARAMS ((struct elf_link_hash_entry *, PTR));
5bd4f169
AM		 83static boolean ppc64_elf_fake_sections
84 PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
85static boolean ppc64_elf_relocate_section
86 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
87 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
88 asection **));
89static boolean ppc64_elf_finish_dynamic_symbol
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 Elf_Internal_Sym *));
92static boolean ppc64_elf_finish_dynamic_sections
93 PARAMS ((bfd *, struct bfd_link_info *));
94
95
5bd4f169
AM		 96/* Mask to set RA in memory instructions. */
97#define RA_REGISTER_MASK 0x001f0000
98
99/* Value to shift register by to insert RA. */
100#define RA_REGISTER_SHIFT 16
101
102/* The name of the dynamic interpreter. This is put in the .interp
103 section. */
104#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
105
106/* The size in bytes of an entry in the procedure linkage table. */
107#define PLT_ENTRY_SIZE 24
108
109/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 110#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 111
112/* TOC base pointers offset from start of TOC. */
113#define TOC_BASE_OFF (0x8000)
114
5d1634d7
AM		 115/* .plt call stub instructions. */
116#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
117#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
118#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
119#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
120#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
121 /* ld %r11,xxx+16@l(%r12) */
122#define BCTR 0x4e800420 /* bctr */
123
124/* The normal stub is this size. */
125#define PLT_CALL_STUB_SIZE (7*4)
126
127/* But sometimes the .plt entry crosses a 64k boundary, and we need
128 to adjust the high word with this insn. */
129#define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
5bd4f169 130
5d1634d7
AM		 131/* The .glink fixup call stub is the same as the .plt call stub, but
132 the first instruction restores r2, and the std is omitted. */
133#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
134
135/* Always allow this much space. */
136#define GLINK_CALL_STUB_SIZE (8*4)
137
138/* Pad with this. */
139#define NOP 0x60000000
140
141/* .glink entries for the first 32k functions are two instructions. */
142#define LI_R0_0 0x38000000 /* li %r0,0 */
143#define B_DOT 0x48000000 /* b . */
144
145/* After that, we need two instructions to load the index, followed by
146 a branch. */
147#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 148#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
5bd4f169
AM		 149\f
150/* Relocation HOWTO's. */
151static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
152
153static reloc_howto_type ppc64_elf_howto_raw[] = {
154 /* This reloc does nothing. */
155 HOWTO (R_PPC64_NONE, /* type */
156 0, /* rightshift */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
158 32, /* bitsize */
159 false, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_bitfield, /* complain_on_overflow */
162 bfd_elf_generic_reloc, /* special_function */
163 "R_PPC64_NONE", /* name */
164 false, /* partial_inplace */
165 0, /* src_mask */
166 0, /* dst_mask */
167 false), /* pcrel_offset */
168
169 /* A standard 32 bit relocation. */
170 HOWTO (R_PPC64_ADDR32, /* type */
171 0, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 32, /* bitsize */
174 false, /* pc_relative */
175 0, /* bitpos */
176 complain_overflow_bitfield, /* complain_on_overflow */
177 bfd_elf_generic_reloc, /* special_function */
178 "R_PPC64_ADDR32", /* name */
179 false, /* partial_inplace */
180 0, /* src_mask */
181 0xffffffff, /* dst_mask */
182 false), /* pcrel_offset */
183
184 /* An absolute 26 bit branch; the lower two bits must be zero.
185 FIXME: we don't check that, we just clear them. */
186 HOWTO (R_PPC64_ADDR24, /* type */
187 0, /* rightshift */
188 2, /* size (0 = byte, 1 = short, 2 = long) */
189 26, /* bitsize */
190 false, /* pc_relative */
191 0, /* bitpos */
192 complain_overflow_bitfield, /* complain_on_overflow */
193 bfd_elf_generic_reloc, /* special_function */
194 "R_PPC64_ADDR24", /* name */
195 false, /* partial_inplace */
196 0, /* src_mask */
197 0x3fffffc, /* dst_mask */
198 false), /* pcrel_offset */
199
200 /* A standard 16 bit relocation. */
201 HOWTO (R_PPC64_ADDR16, /* type */
202 0, /* rightshift */
203 1, /* size (0 = byte, 1 = short, 2 = long) */
204 16, /* bitsize */
205 false, /* pc_relative */
206 0, /* bitpos */
207 complain_overflow_bitfield, /* complain_on_overflow */
208 bfd_elf_generic_reloc, /* special_function */
209 "R_PPC64_ADDR16", /* name */
210 false, /* partial_inplace */
211 0, /* src_mask */
212 0xffff, /* dst_mask */
213 false), /* pcrel_offset */
214
215 /* A 16 bit relocation without overflow. */
216 HOWTO (R_PPC64_ADDR16_LO, /* type */
217 0, /* rightshift */
218 1, /* size (0 = byte, 1 = short, 2 = long) */
219 16, /* bitsize */
220 false, /* pc_relative */
221 0, /* bitpos */
222 complain_overflow_dont,/* complain_on_overflow */
223 bfd_elf_generic_reloc, /* special_function */
224 "R_PPC64_ADDR16_LO", /* name */
225 false, /* partial_inplace */
226 0, /* src_mask */
227 0xffff, /* dst_mask */
228 false), /* pcrel_offset */
229
230 /* Bits 16-31 of an address. */
231 HOWTO (R_PPC64_ADDR16_HI, /* type */
232 16, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 16, /* bitsize */
235 false, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_dont, /* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_PPC64_ADDR16_HI", /* name */
240 false, /* partial_inplace */
241 0, /* src_mask */
242 0xffff, /* dst_mask */
243 false), /* pcrel_offset */
244
245 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
246 bits, treated as a signed number, is negative. */
247 HOWTO (R_PPC64_ADDR16_HA, /* type */
248 16, /* rightshift */
249 1, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 false, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_dont, /* complain_on_overflow */
254 ppc64_elf_addr16_ha_reloc, /* special_function */
255 "R_PPC64_ADDR16_HA", /* name */
256 false, /* partial_inplace */
257 0, /* src_mask */
258 0xffff, /* dst_mask */
259 false), /* pcrel_offset */
260
261 /* An absolute 16 bit branch; the lower two bits must be zero.
262 FIXME: we don't check that, we just clear them. */
263 HOWTO (R_PPC64_ADDR14, /* type */
264 0, /* rightshift */
265 2, /* size (0 = byte, 1 = short, 2 = long) */
266 16, /* bitsize */
267 false, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_bitfield, /* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_PPC64_ADDR14", /* name */
272 false, /* partial_inplace */
273 0, /* src_mask */
274 0xfffc, /* dst_mask */
275 false), /* pcrel_offset */
276
277 /* An absolute 16 bit branch, for which bit 10 should be set to
278 indicate that the branch is expected to be taken. The lower two
279 bits must be zero. */
280 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
281 0, /* rightshift */
282 2, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
284 false, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_bitfield, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR14_BRTAKEN",/* name */
289 false, /* partial_inplace */
290 0, /* src_mask */
291 0xfffc, /* dst_mask */
292 false), /* pcrel_offset */
293
294 /* An absolute 16 bit branch, for which bit 10 should be set to
295 indicate that the branch is not expected to be taken. The lower
296 two bits must be zero. */
297 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
298 0, /* rightshift */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
300 16, /* bitsize */
301 false, /* pc_relative */
302 0, /* bitpos */
303 complain_overflow_bitfield, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR14_BRNTAKEN",/* name */
306 false, /* partial_inplace */
307 0, /* src_mask */
308 0xfffc, /* dst_mask */
309 false), /* pcrel_offset */
310
311 /* A relative 26 bit branch; the lower two bits must be zero. */
312 HOWTO (R_PPC64_REL24, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 26, /* bitsize */
316 true, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_signed, /* complain_on_overflow */
319 bfd_elf_generic_reloc, /* special_function */
320 "R_PPC64_REL24", /* name */
321 false, /* partial_inplace */
322 0, /* src_mask */
323 0x3fffffc, /* dst_mask */
324 true), /* pcrel_offset */
325
326 /* A relative 16 bit branch; the lower two bits must be zero. */
327 HOWTO (R_PPC64_REL14, /* type */
328 0, /* rightshift */
329 2, /* size (0 = byte, 1 = short, 2 = long) */
330 16, /* bitsize */
331 true, /* pc_relative */
332 0, /* bitpos */
333 complain_overflow_signed, /* complain_on_overflow */
334 bfd_elf_generic_reloc, /* special_function */
335 "R_PPC64_REL14", /* name */
336 false, /* partial_inplace */
337 0, /* src_mask */
338 0xfffc, /* dst_mask */
339 true), /* pcrel_offset */
340
341 /* A relative 16 bit branch. Bit 10 should be set to indicate that
342 the branch is expected to be taken. The lower two bits must be
343 zero. */
344 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
345 0, /* rightshift */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
347 16, /* bitsize */
348 true, /* pc_relative */
349 0, /* bitpos */
350 complain_overflow_signed, /* complain_on_overflow */
351 bfd_elf_generic_reloc, /* special_function */
352 "R_PPC64_REL14_BRTAKEN", /* name */
353 false, /* partial_inplace */
354 0, /* src_mask */
355 0xfffc, /* dst_mask */
356 true), /* pcrel_offset */
357
358 /* A relative 16 bit branch. Bit 10 should be set to indicate that
359 the branch is not expected to be taken. The lower two bits must
360 be zero. */
361 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 true, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_PPC64_REL14_BRNTAKEN",/* name */
370 false, /* partial_inplace */
371 0, /* src_mask */
372 0xfffc, /* dst_mask */
373 true), /* pcrel_offset */
374
375 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
376 symbol. */
377 HOWTO (R_PPC64_GOT16, /* type */
378 0, /* rightshift */
379 1, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 false, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_PPC64_GOT16", /* name */
386 false, /* partial_inplace */
387 0, /* src_mask */
388 0xffff, /* dst_mask */
389 false), /* pcrel_offset */
390
391 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
392 the symbol. */
393 HOWTO (R_PPC64_GOT16_LO, /* type */
394 0, /* rightshift */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 false, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_dont, /* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
401 "R_PPC64_GOT16_LO", /* name */
402 false, /* partial_inplace */
403 0, /* src_mask */
404 0xffff, /* dst_mask */
405 false), /* pcrel_offset */
406
407 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
408 the symbol. */
409 HOWTO (R_PPC64_GOT16_HI, /* type */
410 16, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 false, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_dont,/* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_PPC64_GOT16_HI", /* name */
418 false, /* partial_inplace */
419 0, /* src_mask */
420 0xffff, /* dst_mask */
421 false), /* pcrel_offset */
422
423 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
424 the symbol. */
425 HOWTO (R_PPC64_GOT16_HA, /* type */
426 16, /* rightshift */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
429 false, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_dont,/* complain_on_overflow */
432 ppc64_elf_addr16_ha_reloc, /* special_function */
433 "R_PPC64_GOT16_HA", /* name */
434 false, /* partial_inplace */
435 0, /* src_mask */
436 0xffff, /* dst_mask */
437 false), /* pcrel_offset */
438
439 /* This is used only by the dynamic linker. The symbol should exist
440 both in the object being run and in some shared library. The
441 dynamic linker copies the data addressed by the symbol from the
442 shared library into the object, because the object being
443 run has to have the data at some particular address. */
444 HOWTO (R_PPC64_COPY, /* type */
445 0, /* rightshift */
446 2, /* size (0 = byte, 1 = short, 2 = long) */
447 32, /* bitsize */
448 false, /* pc_relative */
449 0, /* bitpos */
450 complain_overflow_bitfield, /* complain_on_overflow */
451 bfd_elf_generic_reloc, /* special_function */
452 "R_PPC64_COPY", /* name */
453 false, /* partial_inplace */
454 0, /* src_mask */
455 0, /* dst_mask */
456 false), /* pcrel_offset */
457
458 /* Like R_PPC64_ADDR64, but used when setting global offset table
459 entries. */
460 HOWTO (R_PPC64_GLOB_DAT, /* type */
461 0, /* rightshift */
462 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
463 64, /* bitsize */
464 false, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_dont, /* complain_on_overflow */
467 bfd_elf_generic_reloc, /* special_function */
468 "R_PPC64_GLOB_DAT", /* name */
469 false, /* partial_inplace */
470 0, /* src_mask */
471 0xffffffffffffffff, /* dst_mask */
472 false), /* pcrel_offset */
473
474 /* Created by the link editor. Marks a procedure linkage table
475 entry for a symbol. */
476 HOWTO (R_PPC64_JMP_SLOT, /* type */
477 0, /* rightshift */
478 0, /* size (0 = byte, 1 = short, 2 = long) */
479 0, /* bitsize */
480 false, /* pc_relative */
481 0, /* bitpos */
482 complain_overflow_dont, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC64_JMP_SLOT", /* name */
485 false, /* partial_inplace */
486 0, /* src_mask */
487 0, /* dst_mask */
488 false), /* pcrel_offset */
489
490 /* Used only by the dynamic linker. When the object is run, this
491 doubleword64 is set to the load address of the object, plus the
492 addend. */
493 HOWTO (R_PPC64_RELATIVE, /* type */
494 0, /* rightshift */
495 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
496 64, /* bitsize */
497 false, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_dont, /* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_PPC64_RELATIVE", /* name */
502 false, /* partial_inplace */
503 0, /* src_mask */
504 0xffffffffffffffff, /* dst_mask */
505 false), /* pcrel_offset */
506
507 /* Like R_PPC64_ADDR32, but may be unaligned. */
508 HOWTO (R_PPC64_UADDR32, /* type */
509 0, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 32, /* bitsize */
512 false, /* pc_relative */
513 0, /* bitpos */
514 complain_overflow_bitfield, /* complain_on_overflow */
515 bfd_elf_generic_reloc, /* special_function */
516 "R_PPC64_UADDR32", /* name */
517 false, /* partial_inplace */
518 0, /* src_mask */
519 0xffffffff, /* dst_mask */
520 false), /* pcrel_offset */
521
522 /* Like R_PPC64_ADDR16, but may be unaligned. */
523 HOWTO (R_PPC64_UADDR16, /* type */
524 0, /* rightshift */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
526 16, /* bitsize */
527 false, /* pc_relative */
528 0, /* bitpos */
529 complain_overflow_bitfield, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC64_UADDR16", /* name */
532 false, /* partial_inplace */
533 0, /* src_mask */
534 0xffff, /* dst_mask */
535 false), /* pcrel_offset */
536
537 /* 32-bit PC relative. */
538 HOWTO (R_PPC64_REL32, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 32, /* bitsize */
542 true, /* pc_relative */
543 0, /* bitpos */
544 /* FIXME: Verify. Was complain_overflow_bitfield. */
545 complain_overflow_signed, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_PPC64_REL32", /* name */
548 false, /* partial_inplace */
549 0, /* src_mask */
550 0xffffffff, /* dst_mask */
551 true), /* pcrel_offset */
552
10ed1bba 553 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 554 HOWTO (R_PPC64_PLT32, /* type */
555 0, /* rightshift */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
557 32, /* bitsize */
558 false, /* pc_relative */
559 0, /* bitpos */
560 complain_overflow_bitfield, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_PPC64_PLT32", /* name */
563 false, /* partial_inplace */
564 0, /* src_mask */
565 0, /* dst_mask */
566 false), /* pcrel_offset */
567
568 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
569 FIXME: R_PPC64_PLTREL32 not supported. */
570 HOWTO (R_PPC64_PLTREL32, /* type */
571 0, /* rightshift */
572 2, /* size (0 = byte, 1 = short, 2 = long) */
573 32, /* bitsize */
574 true, /* pc_relative */
575 0, /* bitpos */
576 complain_overflow_signed, /* complain_on_overflow */
577 bfd_elf_generic_reloc, /* special_function */
578 "R_PPC64_PLTREL32", /* name */
579 false, /* partial_inplace */
580 0, /* src_mask */
581 0, /* dst_mask */
582 true), /* pcrel_offset */
583
584 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
585 the symbol. */
586 HOWTO (R_PPC64_PLT16_LO, /* type */
587 0, /* rightshift */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
589 16, /* bitsize */
590 false, /* pc_relative */
591 0, /* bitpos */
592 complain_overflow_dont, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC64_PLT16_LO", /* name */
595 false, /* partial_inplace */
596 0, /* src_mask */
597 0xffff, /* dst_mask */
598 false), /* pcrel_offset */
599
600 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
601 the symbol. */
602 HOWTO (R_PPC64_PLT16_HI, /* type */
603 16, /* rightshift */
604 1, /* size (0 = byte, 1 = short, 2 = long) */
605 16, /* bitsize */
606 false, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC64_PLT16_HI", /* name */
611 false, /* partial_inplace */
612 0, /* src_mask */
613 0xffff, /* dst_mask */
614 false), /* pcrel_offset */
615
616 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
617 the symbol. */
618 HOWTO (R_PPC64_PLT16_HA, /* type */
619 16, /* rightshift */
620 1, /* size (0 = byte, 1 = short, 2 = long) */
621 16, /* bitsize */
622 false, /* pc_relative */
623 0, /* bitpos */
624 complain_overflow_dont, /* complain_on_overflow */
625 ppc64_elf_addr16_ha_reloc, /* special_function */
626 "R_PPC64_PLT16_HA", /* name */
627 false, /* partial_inplace */
628 0, /* src_mask */
629 0xffff, /* dst_mask */
630 false), /* pcrel_offset */
631
632 /* 32-bit section relative relocation. */
633 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
634 dst_mask=0. */
635 HOWTO (R_PPC64_SECTOFF, /* type */
636 0, /* rightshift */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
638 32, /* bitsize */
639 true, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_bitfield, /* complain_on_overflow */
642 bfd_elf_generic_reloc, /* special_function */
643 "R_PPC64_SECTOFF", /* name */
644 false, /* partial_inplace */
645 0, /* src_mask */
646 0, /* dst_mask */
647 true), /* pcrel_offset */
648
649 /* 16-bit lower half section relative relocation. */
650 HOWTO (R_PPC64_SECTOFF_LO, /* type */
651 0, /* rightshift */
652 1, /* size (0 = byte, 1 = short, 2 = long) */
653 16, /* bitsize */
654 false, /* pc_relative */
655 0, /* bitpos */
656 complain_overflow_dont, /* complain_on_overflow */
657 bfd_elf_generic_reloc, /* special_function */
658 "R_PPC64_SECTOFF_LO", /* name */
659 false, /* partial_inplace */
660 0, /* src_mask */
661 0xffff, /* dst_mask */
662 false), /* pcrel_offset */
663
664 /* 16-bit upper half section relative relocation. */
665 HOWTO (R_PPC64_SECTOFF_HI, /* type */
666 16, /* rightshift */
667 1, /* size (0 = byte, 1 = short, 2 = long) */
668 16, /* bitsize */
669 false, /* pc_relative */
670 0, /* bitpos */
671 complain_overflow_dont, /* complain_on_overflow */
672 bfd_elf_generic_reloc, /* special_function */
673 "R_PPC64_SECTOFF_HI", /* name */
674 false, /* partial_inplace */
675 0, /* src_mask */
676 0xffff, /* dst_mask */
677 false), /* pcrel_offset */
678
679 /* 16-bit upper half adjusted section relative relocation. */
680 HOWTO (R_PPC64_SECTOFF_HA, /* type */
681 16, /* rightshift */
682 1, /* size (0 = byte, 1 = short, 2 = long) */
683 16, /* bitsize */
684 false, /* pc_relative */
685 0, /* bitpos */
686 complain_overflow_dont, /* complain_on_overflow */
687 ppc64_elf_addr16_ha_reloc, /* special_function */
688 "R_PPC64_SECTOFF_HA", /* name */
689 false, /* partial_inplace */
690 0, /* src_mask */
691 0xffff, /* dst_mask */
692 false), /* pcrel_offset */
693
694 /* Like R_PPC64_REL24 without touching the two least significant
695 bits. */
696 /* FIXME: Verify R_PPC64_ADDR30. */
697 HOWTO (R_PPC64_ADDR30, /* type */
698 2, /* rightshift */
699 2, /* size (0 = byte, 1 = short, 2 = long) */
700 30, /* bitsize */
701 true, /* pc_relative */
702 0, /* bitpos */
703 complain_overflow_dont, /* complain_on_overflow */
704 bfd_elf_generic_reloc, /* special_function */
705 "R_PPC64_ADDR30", /* name */
706 false, /* partial_inplace */
707 0, /* src_mask */
708 0xfffffffc, /* dst_mask */
709 true), /* pcrel_offset */
710
711 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
712
713 /* A standard 64-bit relocation. */
714 HOWTO (R_PPC64_ADDR64, /* type */
715 0, /* rightshift */
716 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
717 64, /* bitsize */
718 false, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 "R_PPC64_ADDR64", /* name */
723 false, /* partial_inplace */
724 0, /* src_mask */
725 0xffffffffffffffff, /* dst_mask */
726 false), /* pcrel_offset */
727
728 /* The bits 32-47 of an address. */
729 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
730 32, /* rightshift */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 false, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC64_ADDR16_HIGHER", /* name */
738 false, /* partial_inplace */
739 0, /* src_mask */
740 0xffff, /* dst_mask */
741 false), /* pcrel_offset */
742
743 /* The bits 32-47 of an address, plus 1 if the contents of the low
744 16 bits, treated as a signed number, is negative. */
745 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
746 32, /* rightshift */
747 1, /* size (0 = byte, 1 = short, 2 = long) */
748 16, /* bitsize */
749 false, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_dont, /* complain_on_overflow */
752 ppc64_elf_addr16_ha_reloc, /* special_function */
753 "R_PPC64_ADDR16_HIGHERA", /* name */
754 false, /* partial_inplace */
755 0, /* src_mask */
756 0xffff, /* dst_mask */
757 false), /* pcrel_offset */
758
759 /* The bits 48-63 of an address. */
760 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
761 48, /* rightshift */
762 1, /* size (0 = byte, 1 = short, 2 = long) */
763 16, /* bitsize */
764 false, /* pc_relative */
765 0, /* bitpos */
766 complain_overflow_dont, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_PPC64_ADDR16_HIGHEST", /* name */
769 false, /* partial_inplace */
770 0, /* src_mask */
771 0xffff, /* dst_mask */
772 false), /* pcrel_offset */
773
774 /* The bits 48-63 of an address, plus 1 if the contents of the low
775 16 bits, treated as a signed number, is negative. */
776 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
777 48, /* rightshift */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
779 16, /* bitsize */
780 false, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_dont, /* complain_on_overflow */
783 ppc64_elf_addr16_ha_reloc, /* special_function */
784 "R_PPC64_ADDR16_HIGHESTA", /* name */
785 false, /* partial_inplace */
786 0, /* src_mask */
787 0xffff, /* dst_mask */
788 false), /* pcrel_offset */
789
790 /* Like ADDR64, but may be unaligned. */
791 HOWTO (R_PPC64_UADDR64, /* type */
792 0, /* rightshift */
793 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
794 64, /* bitsize */
795 false, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC64_UADDR64", /* name */
800 false, /* partial_inplace */
801 0, /* src_mask */
802 0xffffffffffffffff, /* dst_mask */
803 false), /* pcrel_offset */
804
805 /* 64-bit relative relocation. */
806 HOWTO (R_PPC64_REL64, /* type */
807 0, /* rightshift */
808 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
809 64, /* bitsize */
810 true, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
814 "R_PPC64_REL64", /* name */
815 false, /* partial_inplace */
816 0, /* src_mask */
817 0xffffffffffffffff, /* dst_mask */
818 true), /* pcrel_offset */
819
820 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 821 HOWTO (R_PPC64_PLT64, /* type */
822 0, /* rightshift */
823 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
824 64, /* bitsize */
825 false, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_PPC64_PLT64", /* name */
830 false, /* partial_inplace */
831 0, /* src_mask */
832 0, /* dst_mask */
833 false), /* pcrel_offset */
834
835 /* 64-bit PC relative relocation to the symbol's procedure linkage
836 table. */
837 /* FIXME: R_PPC64_PLTREL64 not supported. */
838 HOWTO (R_PPC64_PLTREL64, /* type */
839 0, /* rightshift */
840 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 64, /* bitsize */
842 true, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_PLTREL64", /* name */
847 false, /* partial_inplace */
848 0, /* src_mask */
849 0, /* dst_mask */
850 true), /* pcrel_offset */
851
852 /* 16 bit TOC-relative relocation. */
853
854 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
855 HOWTO (R_PPC64_TOC16, /* 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_signed, /* complain_on_overflow */
862 bfd_elf_generic_reloc, /* special_function */
863 "R_PPC64_TOC16", /* name */
864 false, /* partial_inplace */
865 0, /* src_mask */
866 0xffff, /* dst_mask */
867 false), /* pcrel_offset */
868
869 /* 16 bit TOC-relative relocation without overflow. */
870
871 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
872 HOWTO (R_PPC64_TOC16_LO, /* type */
873 0, /* 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_LO", /* 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. */
887
888 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
889 HOWTO (R_PPC64_TOC16_HI, /* type */
890 16, /* rightshift */
891 1, /* size (0 = byte, 1 = short, 2 = long) */
892 16, /* bitsize */
893 false, /* pc_relative */
894 0, /* bitpos */
895 complain_overflow_dont, /* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_PPC64_TOC16_HI", /* name */
898 false, /* partial_inplace */
899 0, /* src_mask */
900 0xffff, /* dst_mask */
901 false), /* pcrel_offset */
902
903 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
904 contents of the low 16 bits, treated as a signed number, is
905 negative. */
906
907 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
908 HOWTO (R_PPC64_TOC16_HA, /* type */
909 16, /* rightshift */
910 1, /* size (0 = byte, 1 = short, 2 = long) */
911 16, /* bitsize */
912 false, /* pc_relative */
913 0, /* bitpos */
914 complain_overflow_dont, /* complain_on_overflow */
915 ppc64_elf_addr16_ha_reloc, /* special_function */
916 "R_PPC64_TOC16_HA", /* name */
917 false, /* partial_inplace */
918 0, /* src_mask */
919 0xffff, /* dst_mask */
920 false), /* pcrel_offset */
921
922 /* 64-bit relocation; insert value of TOC base (.TOC.). */
923
924 /* R_PPC64_TOC 51 doubleword64 .TOC. */
925 HOWTO (R_PPC64_TOC, /* type */
926 0, /* rightshift */
927 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
928 64, /* bitsize */
929 false, /* pc_relative */
930 0, /* bitpos */
931 complain_overflow_bitfield, /* complain_on_overflow */
932 bfd_elf_generic_reloc, /* special_function */
933 "R_PPC64_TOC", /* name */
934 false, /* partial_inplace */
935 0, /* src_mask */
936 0xffffffffffffffff, /* dst_mask */
937 false), /* pcrel_offset */
938
939 /* Like R_PPC64_GOT16, but also informs the link editor that the
940 value to relocate may (!) refer to a PLT entry which the link
941 editor (a) may replace with the symbol value. If the link editor
942 is unable to fully resolve the symbol, it may (b) create a PLT
943 entry and store the address to the new PLT entry in the GOT.
944 This permits lazy resolution of function symbols at run time.
945 The link editor may also skip all of this and just (c) emit a
946 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
947 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
948 HOWTO (R_PPC64_PLTGOT16, /* type */
949 0, /* rightshift */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
951 16, /* bitsize */
952 false, /* pc_relative */
953 0, /* bitpos */
954 complain_overflow_signed, /* complain_on_overflow */
955 bfd_elf_generic_reloc, /* special_function */
956 "R_PPC64_PLTGOT16", /* name */
957 false, /* partial_inplace */
958 0, /* src_mask */
959 0xffff, /* dst_mask */
960 false), /* pcrel_offset */
961
962 /* Like R_PPC64_PLTGOT16, but without overflow. */
963 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
964 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
965 0, /* rightshift */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
967 16, /* bitsize */
968 false, /* pc_relative */
969 0, /* bitpos */
970 complain_overflow_dont, /* complain_on_overflow */
971 bfd_elf_generic_reloc, /* special_function */
972 "R_PPC64_PLTGOT16_LO", /* name */
973 false, /* partial_inplace */
974 0, /* src_mask */
975 0xffff, /* dst_mask */
976 false), /* pcrel_offset */
977
978 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
979 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
980 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
981 16, /* rightshift */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
983 16, /* bitsize */
984 false, /* pc_relative */
985 0, /* bitpos */
986 complain_overflow_dont, /* complain_on_overflow */
987 bfd_elf_generic_reloc, /* special_function */
988 "R_PPC64_PLTGOT16_HI", /* name */
989 false, /* partial_inplace */
990 0, /* src_mask */
991 0xffff, /* dst_mask */
992 false), /* pcrel_offset */
993
994 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
995 1 if the contents of the low 16 bits, treated as a signed number,
996 is negative. */
997 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
998 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
999 16, /* rightshift */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 16, /* bitsize */
1002 false, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_dont,/* complain_on_overflow */
1005 ppc64_elf_addr16_ha_reloc, /* special_function */
1006 "R_PPC64_PLTGOT16_HA", /* name */
1007 false, /* partial_inplace */
1008 0, /* src_mask */
1009 0xffff, /* dst_mask */
1010 false), /* pcrel_offset */
1011
1012 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1013 HOWTO (R_PPC64_ADDR16_DS, /* type */
1014 0, /* rightshift */
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 16, /* bitsize */
1017 false, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_bitfield, /* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_PPC64_ADDR16_DS", /* name */
1022 false, /* partial_inplace */
1023 0, /* src_mask */
1024 0xfffc, /* dst_mask */
1025 false), /* pcrel_offset */
1026
1027 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1028 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1029 0, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 16, /* bitsize */
1032 false, /* pc_relative */
1033 0, /* bitpos */
1034 complain_overflow_dont,/* complain_on_overflow */
1035 bfd_elf_generic_reloc, /* special_function */
1036 "R_PPC64_ADDR16_LO_DS",/* name */
1037 false, /* partial_inplace */
1038 0, /* src_mask */
1039 0xfffc, /* dst_mask */
1040 false), /* pcrel_offset */
1041
1042 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1043 HOWTO (R_PPC64_GOT16_DS, /* type */
1044 0, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 false, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_signed, /* complain_on_overflow */
1050 bfd_elf_generic_reloc, /* special_function */
1051 "R_PPC64_GOT16_DS", /* name */
1052 false, /* partial_inplace */
1053 0, /* src_mask */
1054 0xfffc, /* dst_mask */
1055 false), /* pcrel_offset */
1056
1057 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 false, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_GOT16_LO_DS", /* name */
1067 false, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 false), /* pcrel_offset */
1071
1072 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 false, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_PLT16_LO_DS", /* name */
1082 false, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 false), /* pcrel_offset */
1086
1087 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1088 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
1089 dst_mask=0. */
1090 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1091 0, /* rightshift */
1092 2, /* size (0 = byte, 1 = short, 2 = long) */
1093 32, /* bitsize */
1094 true, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_bitfield, /* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
1098 "R_PPC64_SECTOFF_DS", /* name */
1099 false, /* partial_inplace */
1100 0, /* src_mask */
1101 0, /* dst_mask */
1102 true), /* pcrel_offset */
1103
1104 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1106 0, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 false, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 bfd_elf_generic_reloc, /* special_function */
1113 "R_PPC64_SECTOFF_LO_DS",/* name */
1114 false, /* partial_inplace */
1115 0, /* src_mask */
1116 0xfffc, /* dst_mask */
1117 false), /* pcrel_offset */
1118
1119 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_TOC16_DS, /* type */
1121 0, /* rightshift */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 16, /* bitsize */
1124 false, /* pc_relative */
1125 0, /* bitpos */
1126 complain_overflow_signed, /* complain_on_overflow */
1127 bfd_elf_generic_reloc, /* special_function */
1128 "R_PPC64_TOC16_DS", /* name */
1129 false, /* partial_inplace */
1130 0, /* src_mask */
1131 0xfffc, /* dst_mask */
1132 false), /* pcrel_offset */
1133
1134 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1136 0, /* rightshift */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 16, /* bitsize */
1139 false, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 bfd_elf_generic_reloc, /* special_function */
1143 "R_PPC64_TOC16_LO_DS", /* name */
1144 false, /* partial_inplace */
1145 0, /* src_mask */
1146 0xfffc, /* dst_mask */
1147 false), /* pcrel_offset */
1148
1149 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1150 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1151 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1152 0, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 16, /* bitsize */
1155 false, /* pc_relative */
1156 0, /* bitpos */
1157 complain_overflow_signed, /* complain_on_overflow */
1158 bfd_elf_generic_reloc, /* special_function */
1159 "R_PPC64_PLTGOT16_DS", /* name */
1160 false, /* partial_inplace */
1161 0, /* src_mask */
1162 0xfffc, /* dst_mask */
1163 false), /* pcrel_offset */
1164
1165 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1166 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1167 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1168 0, /* rightshift */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 16, /* bitsize */
1171 false, /* pc_relative */
1172 0, /* bitpos */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 bfd_elf_generic_reloc, /* special_function */
1175 "R_PPC64_PLTGOT16_LO_DS",/* name */
1176 false, /* partial_inplace */
1177 0, /* src_mask */
1178 0xfffc, /* dst_mask */
1179 false), /* pcrel_offset */
1180
1181 /* GNU extension to record C++ vtable hierarchy. */
1182 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1183 0, /* rightshift */
1184 0, /* size (0 = byte, 1 = short, 2 = long) */
1185 0, /* bitsize */
1186 false, /* pc_relative */
1187 0, /* bitpos */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 NULL, /* special_function */
1190 "R_PPC64_GNU_VTINHERIT", /* name */
1191 false, /* partial_inplace */
1192 0, /* src_mask */
1193 0, /* dst_mask */
1194 false), /* pcrel_offset */
1195
1196 /* GNU extension to record C++ vtable member usage. */
1197 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1198 0, /* rightshift */
1199 0, /* size (0 = byte, 1 = short, 2 = long) */
1200 0, /* bitsize */
1201 false, /* pc_relative */
1202 0, /* bitpos */
1203 complain_overflow_dont, /* complain_on_overflow */
1204 NULL, /* special_function */
1205 "R_PPC64_GNU_VTENTRY", /* name */
1206 false, /* partial_inplace */
1207 0, /* src_mask */
1208 0, /* dst_mask */
1209 false), /* pcrel_offset */
1210};
1211
1212\f
1213/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1214 be done. */
1215
1216static void
1217ppc_howto_init ()
1218{
1219 unsigned int i, type;
1220
1221 for (i = 0;
1222 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1223 i++)
1224 {
1225 type = ppc64_elf_howto_raw[i].type;
1226 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1227 / sizeof (ppc64_elf_howto_table[0])));
1228 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1229 }
1230}
1231
1232static reloc_howto_type *
1233ppc64_elf_reloc_type_lookup (abfd, code)
1234 bfd *abfd ATTRIBUTE_UNUSED;
1235 bfd_reloc_code_real_type code;
1236{
1237 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1238
1239 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1240 /* Initialize howto table if needed. */
1241 ppc_howto_init ();
1242
1243 switch ((int) code)
1244 {
1245 default:
1246 return (reloc_howto_type *) NULL;
1247
1248 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1249 break;
1250 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1251 break;
1252 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1253 break;
1254 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1255 break;
1256 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1257 break;
1258 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1259 break;
1260 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1261 break;
1262 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1263 break;
1264 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1265 break;
1266 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1267 break;
1268 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1269 break;
1270 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1271 break;
1272 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1273 break;
1274 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1275 break;
1276 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1277 break;
1278 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1279 break;
1280 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1281 break;
1282 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1283 break;
1284 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1285 break;
1286 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1287 break;
1288 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1289 break;
1290 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1291 break;
1292 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1293 break;
1294 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1295 break;
1296 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1297 break;
1298 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1299 break;
1300 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
1301 break;
1302 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1303 break;
1304 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1305 break;
1306 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1307 break;
10ed1bba 1308 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
5bd4f169
AM		 1309 break;
1310 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1311 break;
1312 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1313 break;
1314 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1315 break;
1316 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1317 break;
1318 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1319 break;
1320 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1321 break;
1322 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1323 break;
1324 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1325 break;
1326 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1327 break;
1328 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1329 break;
1330 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1331 break;
1332 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1333 break;
1334 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1335 break;
1336 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1337 break;
1338 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1339 break;
1340 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1341 break;
1342 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1343 break;
1344 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1345 break;
1346 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1347 break;
1348 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1349 break;
1350 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1351 break;
1352 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1353 break;
1354 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1355 break;
1356 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1357 break;
1358 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1359 break;
1360 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1361 break;
1362 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1363 break;
1364 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1365 break;
1366 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1367 break;
1368 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1369 break;
1370 }
1371
1372 return ppc64_elf_howto_table[(int) ppc_reloc];
1373};
1374
1375/* Set the howto pointer for a PowerPC ELF reloc. */
1376
1377static void
1378ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1379 bfd *abfd ATTRIBUTE_UNUSED;
1380 arelent *cache_ptr;
1381 Elf64_Internal_Rela *dst;
1382{
65f38f15
AM		 1383 unsigned int type;
1384
5bd4f169
AM		 1385 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1386 /* Initialize howto table if needed. */
1387 ppc_howto_init ();
1388
65f38f15
AM		 1389 type = ELF64_R_TYPE (dst->r_info);
1390 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1391 / sizeof (ppc64_elf_howto_table[0])));
1392 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 1393}
1394
65f38f15 1395/* Handle the R_PPC_ADDR16_HA and similar relocs. */
5bd4f169
AM		 1396
1397static bfd_reloc_status_type
1398ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1399 output_bfd, error_message)
1400 bfd *abfd ATTRIBUTE_UNUSED;
1401 arelent *reloc_entry;
1402 asymbol *symbol;
1403 PTR data ATTRIBUTE_UNUSED;
1404 asection *input_section;
1405 bfd *output_bfd;
1406 char **error_message ATTRIBUTE_UNUSED;
1407{
1408 bfd_vma relocation;
1409
1410 if (output_bfd != NULL)
1411 {
1412 reloc_entry->address += input_section->output_offset;
1413 return bfd_reloc_ok;
1414 }
1415
1416 if (reloc_entry->address > input_section->_cooked_size)
1417 return bfd_reloc_outofrange;
1418
1419 if (bfd_is_com_section (symbol->section))
1420 relocation = 0;
1421 else
1422 relocation = symbol->value;
1423
1424 relocation += symbol->section->output_section->vma;
1425 relocation += symbol->section->output_offset;
1426 relocation += reloc_entry->addend;
1427
1428 reloc_entry->addend += (relocation & 0x8000) << 1;
1429
1430 return bfd_reloc_continue;
1431}
1432
1433/* Function to set whether a module needs the -mrelocatable bit set. */
1434
1435static boolean
1436ppc64_elf_set_private_flags (abfd, flags)
1437 bfd *abfd;
1438 flagword flags;
1439{
1440 BFD_ASSERT (!elf_flags_init (abfd)
1441 || elf_elfheader (abfd)->e_flags == flags);
1442
1443 elf_elfheader (abfd)->e_flags = flags;
1444 elf_flags_init (abfd) = true;
1445 return true;
1446}
1447
5bd4f169
AM		 1448/* Merge backend specific data from an object file to the output
1449 object file when linking. */
1450static boolean
1451ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1452 bfd *ibfd;
1453 bfd *obfd;
1454{
1455 flagword old_flags;
1456 flagword new_flags;
1457 boolean error;
1458
1459 /* Check if we have the same endianess. */
1460 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1461 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1462 {
1463 const char *msg;
1464
1465 if (bfd_big_endian (ibfd))
1466 msg = _("%s: compiled for a big endian system and target is little endian");
1467 else
1468 msg = _("%s: compiled for a little endian system and target is big endian");
1469
8f615d07 1470 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
5bd4f169
AM		 1471
1472 bfd_set_error (bfd_error_wrong_format);
1473 return false;
1474 }
1475
1476 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1477 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1478 return true;
1479
1480 new_flags = elf_elfheader (ibfd)->e_flags;
1481 old_flags = elf_elfheader (obfd)->e_flags;
1482 if (!elf_flags_init (obfd))
1483 {
1484 /* First call, no flags set. */
1485 elf_flags_init (obfd) = true;
1486 elf_elfheader (obfd)->e_flags = new_flags;
1487 }
1488
1489 else if (new_flags == old_flags)
1490 /* Compatible flags are ok. */
1491 ;
1492
1493 else
1494 {
1495 /* Incompatible flags. Warn about -mrelocatable mismatch.
1496 Allow -mrelocatable-lib to be linked with either. */
1497 error = false;
1498 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1499 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1500 {
1501 error = true;
1502 (*_bfd_error_handler)
1503 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
8f615d07 1504 bfd_archive_filename (ibfd));
5bd4f169
AM		 1505 }
1506 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1507 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1508 {
1509 error = true;
1510 (*_bfd_error_handler)
1511 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
8f615d07 1512 bfd_archive_filename (ibfd));
5bd4f169
AM		 1513 }
1514
1515 /* The output is -mrelocatable-lib iff both the input files are. */
1516 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1517 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1518
1519 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1520 but each input file is either -mrelocatable or -mrelocatable-lib. */
1521 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1522 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1523 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1524 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1525
1526 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
1527 if any module uses it. */
1528 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1529
1530 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1531 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1532
1533 /* Warn about any other mismatches. */
1534 if (new_flags != old_flags)
1535 {
1536 error = true;
1537 (*_bfd_error_handler)
1538 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
8f615d07 1539 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
5bd4f169
AM		 1540 }
1541
1542 if (error)
1543 {
1544 bfd_set_error (bfd_error_bad_value);
1545 return false;
1546 }
1547 }
1548
1549 return true;
1550}
1551
1552/* Handle a PowerPC specific section when reading an object file. This
1553 is called when elfcode.h finds a section with an unknown type. */
1554
1555static boolean
1556ppc64_elf_section_from_shdr (abfd, hdr, name)
1557 bfd *abfd;
1558 Elf64_Internal_Shdr *hdr;
1559 char *name;
1560{
1561 asection *newsect;
1562 flagword flags;
1563
1564 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1565 return false;
1566
1567 newsect = hdr->bfd_section;
1568 flags = bfd_get_section_flags (abfd, newsect);
1569 if (hdr->sh_flags & SHF_EXCLUDE)
1570 flags |= SEC_EXCLUDE;
1571
1572 if (hdr->sh_type == SHT_ORDERED)
1573 flags |= SEC_SORT_ENTRIES;
1574
1575 bfd_set_section_flags (abfd, newsect, flags);
1576 return true;
1577}
1578\f
65f38f15
AM		 1579/* The following functions are specific to the ELF linker, while
1580 functions above are used generally. Those named ppc64_elf_* are
1581 called by the main ELF linker code. They appear in this file more
1582 or less in the order in which they are called. eg.
1583 ppc64_elf_check_relocs is called early in the link process,
1584 ppc64_elf_finish_dynamic_sections is one of the last functions
1585 called. */
1586
1587/* The linker needs to keep track of the number of relocs that it
1588 decides to copy as dynamic relocs in check_relocs for each symbol.
1589 This is so that it can later discard them if they are found to be
1590 unnecessary. We store the information in a field extending the
1591 regular ELF linker hash table. */
1592
1593struct ppc_dyn_relocs
1594{
1595 struct ppc_dyn_relocs *next;
1596
1597 /* The input section of the reloc. */
1598 asection *sec;
1599
1600 /* Total number of relocs copied for the input section. */
1601 bfd_size_type count;
1602
1603 /* Number of pc-relative relocs copied for the input section. */
1604 bfd_size_type pc_count;
1605};
1606
1607/* Of those relocs that might be copied as dynamic relocs, this macro
1608 selects between relative and absolute types. */
1609
1610#define IS_ABSOLUTE_RELOC(RTYPE) \
1611 ((RTYPE) != R_PPC64_REL14 \
1612 && (RTYPE) != R_PPC64_REL14_BRNTAKEN \
1613 && (RTYPE) != R_PPC64_REL14_BRTAKEN \
1614 && (RTYPE) != R_PPC64_REL24 \
1615 && (RTYPE) != R_PPC64_REL32 \
1616 && (RTYPE) != R_PPC64_REL64)
1617
1618/* ppc64 ELF linker hash entry. */
1619
1620struct ppc_link_hash_entry
1621{
1622 struct elf_link_hash_entry elf;
1623
1624 /* Track dynamic relocs copied for this symbol. */
1625 struct ppc_dyn_relocs *dyn_relocs;
1626};
1627
1628/* ppc64 ELF linker hash table. */
1629
1630struct ppc_link_hash_table
1631{
1632 struct elf_link_hash_table elf;
1633
1634 /* Short-cuts to get to dynamic linker sections. */
1635 asection *sgot;
1636 asection *srelgot;
1637 asection *splt;
1638 asection *srelplt;
1639 asection *sdynbss;
1640 asection *srelbss;
5d1634d7 1641 asection *sstub;
65f38f15 1642 asection *sglink;
ec338859 1643
5d1634d7
AM		 1644 /* Set on error. */
1645 int plt_overflow;
1646
ec338859
AM		 1647 /* Small local sym to section mapping cache. */
1648 struct sym_sec_cache sym_sec;
65f38f15
AM		 1649};
1650
1651/* Get the ppc64 ELF linker hash table from a link_info structure. */
1652
1653#define ppc_hash_table(p) \
1654 ((struct ppc_link_hash_table *) ((p)->hash))
1655
1656/* Create an entry in a ppc64 ELF linker hash table. */
1657
1658static struct bfd_hash_entry *
1659link_hash_newfunc (entry, table, string)
1660 struct bfd_hash_entry *entry;
1661 struct bfd_hash_table *table;
1662 const char *string;
1663{
1664 /* Allocate the structure if it has not already been allocated by a
1665 subclass. */
1666 if (entry == NULL)
1667 {
1668 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
1669 if (entry == NULL)
1670 return entry;
1671 }
1672
1673 /* Call the allocation method of the superclass. */
1674 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1675 if (entry != NULL)
1676 {
1677 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
1678
1679 eh->dyn_relocs = NULL;
1680 }
1681
1682 return entry;
1683}
1684
1685/* Create a ppc64 ELF linker hash table. */
1686
1687static struct bfd_link_hash_table *
1688ppc64_elf_link_hash_table_create (abfd)
1689 bfd *abfd;
1690{
1691 struct ppc_link_hash_table *htab;
1692 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
1693
1694 htab = (struct ppc_link_hash_table *) bfd_alloc (abfd, amt);
1695 if (htab == NULL)
1696 return NULL;
1697
1698 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
1699 {
1700 bfd_release (abfd, htab);
1701 return NULL;
1702 }
1703
1704 htab->sgot = NULL;
1705 htab->srelgot = NULL;
1706 htab->splt = NULL;
1707 htab->srelplt = NULL;
1708 htab->sdynbss = NULL;
1709 htab->srelbss = NULL;
5d1634d7 1710 htab->sstub = NULL;
65f38f15 1711 htab->sglink = NULL;
5d1634d7 1712 htab->plt_overflow = 0;
ec338859 1713 htab->sym_sec.abfd = NULL;
65f38f15
AM		 1714
1715 return &htab->elf.root;
1716}
1717
1718/* Create .got and .rela.got sections in DYNOBJ, and set up
1719 shortcuts to them in our hash table. */
1720
1721static boolean
1722create_got_section (dynobj, info)
1723 bfd *dynobj;
1724 struct bfd_link_info *info;
1725{
1726 struct ppc_link_hash_table *htab;
1727
1728 if (! _bfd_elf_create_got_section (dynobj, info))
1729 return false;
1730
1731 htab = ppc_hash_table (info);
1732 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1733 if (!htab->sgot)
1734 abort ();
1735
1736 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
1737 if (!htab->srelgot
1738 || ! bfd_set_section_flags (dynobj, htab->srelgot,
1739 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1740 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1741 | SEC_READONLY))
1742 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
1743 return false;
1744 return true;
1745}
5bd4f169 1746
5d1634d7
AM		 1747/* Create the .stub and .glink sections as well as the ordinary
1748 dynamic sections. */
5bd4f169
AM		 1749
1750static boolean
65f38f15
AM		 1751ppc64_elf_create_dynamic_sections (dynobj, info)
1752 bfd *dynobj;
5bd4f169
AM		 1753 struct bfd_link_info *info;
1754{
65f38f15 1755 struct ppc_link_hash_table *htab;
5bd4f169
AM		 1756 flagword flags;
1757
65f38f15
AM		 1758 htab = ppc_hash_table (info);
1759 if (!htab->sgot && !create_got_section (dynobj, info))
5bd4f169
AM		 1760 return false;
1761
65f38f15 1762 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
5bd4f169 1763 return false;
65f38f15
AM		 1764
1765 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1766 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
1767 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1768 if (!info->shared)
1769 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1770
1771 if (!htab->splt || !htab->srelplt || !htab->sdynbss
1772 || (!info->shared && !htab->srelbss))
1773 abort ();
1774
5d1634d7
AM		 1775 /* Create .stub and .glink for global linkage functions. */
1776 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
1777 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1778 htab->sstub = bfd_make_section (dynobj, ".stub");
1779 if (htab->sstub == NULL
1780 || ! bfd_set_section_flags (dynobj, htab->sstub, flags)
1781 || ! bfd_set_section_alignment (dynobj, htab->sstub, 2))
5bd4f169 1782 return false;
65f38f15
AM		 1783 htab->sglink = bfd_make_section (dynobj, ".glink");
1784 if (htab->sglink == NULL
1785 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
1786 || ! bfd_set_section_alignment (dynobj, htab->sglink, 3))
5bd4f169
AM		 1787 return false;
1788
1789 return true;
1790}
1791
65f38f15
AM		 1792/* Copy the extra info we tack onto an elf_link_hash_entry. */
1793
1794static void
1795ppc64_elf_copy_indirect_symbol (dir, ind)
1796 struct elf_link_hash_entry *dir, *ind;
1797{
1798 struct ppc_link_hash_entry *edir, *eind;
1799
1800 edir = (struct ppc_link_hash_entry *) dir;
1801 eind = (struct ppc_link_hash_entry *) ind;
1802
bbd7ec4a 1803 if (eind->dyn_relocs != NULL)
65f38f15 1804 {
bbd7ec4a
AM		 1805 if (edir->dyn_relocs != NULL)
1806 {
1807 struct ppc_dyn_relocs **pp;
1808 struct ppc_dyn_relocs *p;
1809
1e370bd2 1810 if (ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 1811 abort ();
1812
1813 /* Add reloc counts against the weak sym to the strong sym
1814 list. Merge any entries against the same section. */
1815 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1816 {
1817 struct ppc_dyn_relocs *q;
1818
1819 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1820 if (q->sec == p->sec)
1821 {
1822 q->pc_count += p->pc_count;
1823 q->count += p->count;
1824 *pp = p->next;
1825 break;
1826 }
1827 if (q == NULL)
1828 pp = &p->next;
1829 }
1830 *pp = edir->dyn_relocs;
1831 }
1832
65f38f15
AM		 1833 edir->dyn_relocs = eind->dyn_relocs;
1834 eind->dyn_relocs = NULL;
1835 }
65f38f15
AM		 1836
1837 _bfd_elf_link_hash_copy_indirect (dir, ind);
1838}
1839
5bd4f169 1840/* Look through the relocs for a section during the first phase, and
65f38f15 1841 calculate needed space in the global offset table, procedure
5d1634d7 1842 linkage table, and dynamic reloc sections. */
5bd4f169
AM		 1843
1844static boolean
1845ppc64_elf_check_relocs (abfd, info, sec, relocs)
1846 bfd *abfd;
1847 struct bfd_link_info *info;
1848 asection *sec;
1849 const Elf_Internal_Rela *relocs;
1850{
65f38f15 1851 struct ppc_link_hash_table *htab;
5bd4f169
AM		 1852 Elf_Internal_Shdr *symtab_hdr;
1853 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1854 const Elf_Internal_Rela *rel;
1855 const Elf_Internal_Rela *rel_end;
5bd4f169 1856 asection *sreloc;
5bd4f169
AM		 1857
1858 if (info->relocateable)
1859 return true;
1860
65f38f15 1861 htab = ppc_hash_table (info);
5bd4f169 1862 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 1863
1864 sym_hashes = elf_sym_hashes (abfd);
1865 sym_hashes_end = (sym_hashes
1866 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
1867 if (!elf_bad_symtab (abfd))
1868 sym_hashes_end -= symtab_hdr->sh_info;
1869
1870 sreloc = NULL;
1871
1872 rel_end = relocs + sec->reloc_count;
1873 for (rel = relocs; rel < rel_end; rel++)
1874 {
1875 unsigned long r_symndx;
1876 struct elf_link_hash_entry *h;
a33d1f77 1877 enum elf_ppc_reloc_type r_type;
5bd4f169
AM		 1878
1879 r_symndx = ELF64_R_SYM (rel->r_info);
1880 if (r_symndx < symtab_hdr->sh_info)
1881 h = NULL;
1882 else
1883 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1884
a33d1f77
AM		 1885 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
1886 switch (r_type)
5bd4f169
AM		 1887 {
1888 /* GOT16 relocations */
1889 case R_PPC64_GOT16:
5bd4f169 1890 case R_PPC64_GOT16_DS:
65f38f15
AM		 1891 case R_PPC64_GOT16_HA:
1892 case R_PPC64_GOT16_HI:
1893 case R_PPC64_GOT16_LO:
5bd4f169 1894 case R_PPC64_GOT16_LO_DS:
5bd4f169 1895
65f38f15
AM		 1896 /* This symbol requires a global offset table entry. */
1897 if (htab->sgot == NULL)
5bd4f169 1898 {
65f38f15
AM		 1899 if (htab->elf.dynobj == NULL)
1900 htab->elf.dynobj = abfd;
1901 if (!create_got_section (htab->elf.dynobj, info))
5bd4f169 1902 return false;
5bd4f169
AM		 1903 }
1904
1905 if (h != NULL)
1906 {
65f38f15 1907 h->got.refcount += 1;
5bd4f169
AM		 1908 }
1909 else
1910 {
65f38f15
AM		 1911 bfd_signed_vma *local_got_refcounts;
1912
5bd4f169 1913 /* This is a global offset table entry for a local symbol. */
65f38f15 1914 local_got_refcounts = elf_local_got_refcounts (abfd);
5bd4f169
AM		 1915 if (local_got_refcounts == NULL)
1916 {
dc810e39 1917 bfd_size_type size;
5bd4f169 1918
dc810e39
AM		 1919 size = symtab_hdr->sh_info;
1920 size *= sizeof (bfd_signed_vma);
1921 local_got_refcounts = ((bfd_signed_vma *)
65f38f15 1922 bfd_zalloc (abfd, size));
5bd4f169
AM		 1923 if (local_got_refcounts == NULL)
1924 return false;
1925 elf_local_got_refcounts (abfd) = local_got_refcounts;
5bd4f169 1926 }
65f38f15 1927 local_got_refcounts[r_symndx] += 1;
5bd4f169
AM		 1928 }
1929 break;
1930
5bd4f169 1931 case R_PPC64_PLT16_HA:
65f38f15
AM		 1932 case R_PPC64_PLT16_HI:
1933 case R_PPC64_PLT16_LO:
1934 case R_PPC64_PLT32:
1935 case R_PPC64_PLT64:
5bd4f169
AM		 1936 /* This symbol requires a procedure linkage table entry. We
1937 actually build the entry in adjust_dynamic_symbol,
1938 because this might be a case of linking PIC code without
1939 linking in any dynamic objects, in which case we don't
1940 need to generate a procedure linkage table after all. */
5bd4f169
AM		 1941 if (h == NULL)
1942 {
1943 /* It does not make sense to have a procedure linkage
1944 table entry for a local symbol. */
1945 bfd_set_error (bfd_error_bad_value);
1946 return false;
1947 }
1948
65f38f15
AM		 1949 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1950 h->plt.refcount += 1;
5bd4f169
AM		 1951 break;
1952
1953 /* The following relocations don't need to propagate the
1954 relocation if linking a shared object since they are
1955 section relative. */
1956 case R_PPC64_SECTOFF:
1957 case R_PPC64_SECTOFF_LO:
1958 case R_PPC64_SECTOFF_HI:
1959 case R_PPC64_SECTOFF_HA:
1960 case R_PPC64_SECTOFF_DS:
1961 case R_PPC64_SECTOFF_LO_DS:
1962 case R_PPC64_TOC16:
1963 case R_PPC64_TOC16_LO:
1964 case R_PPC64_TOC16_HI:
1965 case R_PPC64_TOC16_HA:
1966 case R_PPC64_TOC16_DS:
1967 case R_PPC64_TOC16_LO_DS:
1968 break;
1969
1970 /* This relocation describes the C++ object vtable hierarchy.
1971 Reconstruct it for later use during GC. */
1972 case R_PPC64_GNU_VTINHERIT:
1973 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1974 return false;
1975 break;
1976
1977 /* This relocation describes which C++ vtable entries are actually
1978 used. Record for later use during GC. */
1979 case R_PPC64_GNU_VTENTRY:
1980 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1981 return false;
1982 break;
1983
5d1634d7
AM		 1984 case R_PPC64_REL24:
1985 if (h != NULL)
1986 {
1987 /* We may need a .plt entry if the function this reloc
1988 refers to is in a shared lib. */
1989 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1990 h->plt.refcount += 1;
1991 }
1992 break;
1993
5bd4f169
AM		 1994 case R_PPC64_REL64:
1995 case R_PPC64_REL32:
5bd4f169
AM		 1996 case R_PPC64_REL14:
1997 case R_PPC64_REL14_BRTAKEN:
1998 case R_PPC64_REL14_BRNTAKEN:
65f38f15
AM		 1999 case R_PPC64_ADDR14:
2000 case R_PPC64_ADDR14_BRNTAKEN:
2001 case R_PPC64_ADDR14_BRTAKEN:
2002 case R_PPC64_ADDR16:
2003 case R_PPC64_ADDR16_DS:
2004 case R_PPC64_ADDR16_HA:
2005 case R_PPC64_ADDR16_HI:
2006 case R_PPC64_ADDR16_HIGHER:
2007 case R_PPC64_ADDR16_HIGHERA:
2008 case R_PPC64_ADDR16_HIGHEST:
2009 case R_PPC64_ADDR16_HIGHESTA:
2010 case R_PPC64_ADDR16_LO:
2011 case R_PPC64_ADDR16_LO_DS:
2012 case R_PPC64_ADDR24:
2013 case R_PPC64_ADDR30:
2014 case R_PPC64_ADDR32:
2015 case R_PPC64_ADDR64:
2016 case R_PPC64_UADDR16:
2017 case R_PPC64_UADDR32:
2018 case R_PPC64_UADDR64:
5bd4f169 2019 case R_PPC64_TOC:
65f38f15
AM		 2020 /* If we are creating a shared library, and this is a reloc
2021 against a global symbol, or a non PC relative reloc
2022 against a local symbol, then we need to copy the reloc
2023 into the shared library. However, if we are linking with
2024 -Bsymbolic, we do not need to copy a reloc against a
2025 global symbol which is defined in an object we are
2026 including in the link (i.e., DEF_REGULAR is set). At
2027 this point we have not seen all the input files, so it is
2028 possible that DEF_REGULAR is not set now but will be set
2029 later (it is never cleared). In case of a weak definition,
2030 DEF_REGULAR may be cleared later by a strong definition in
2031 a shared library. We account for that possibility below by
2032 storing information in the relocs_copied field of the hash
2033 table entry. A similar situation occurs when creating
2034 shared libraries and symbol visibility changes render the
2035 symbol local.
2036
2037 If on the other hand, we are creating an executable, we
2038 may need to keep relocations for symbols satisfied by a
2039 dynamic library if we manage to avoid copy relocs for the
2040 symbol. */
2041 if ((info->shared
2042 && (sec->flags & SEC_ALLOC) != 0
a33d1f77 2043 && (IS_ABSOLUTE_RELOC (r_type)
65f38f15
AM		 2044 || (h != NULL
2045 && (! info->symbolic
2046 || h->root.type == bfd_link_hash_defweak
2047 || (h->elf_link_hash_flags
2048 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2049 || (!info->shared
2050 && (sec->flags & SEC_ALLOC) != 0
2051 && h != NULL
2052 && (h->root.type == bfd_link_hash_defweak
2053 || (h->elf_link_hash_flags
2054 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 2055 {
ec338859
AM		 2056 struct ppc_dyn_relocs *p;
2057 struct ppc_dyn_relocs **head;
2058
5d1634d7
AM		 2059#if 0
2060 /* Don't propagate .opd relocs. */
2061 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
2062 break;
2063#endif
2064
65f38f15
AM		 2065 /* We must copy these reloc types into the output file.
2066 Create a reloc section in dynobj and make room for
2067 this reloc. */
5bd4f169
AM		 2068 if (sreloc == NULL)
2069 {
2070 const char *name;
65f38f15 2071 bfd *dynobj;
5bd4f169
AM		 2072
2073 name = (bfd_elf_string_from_elf_section
2074 (abfd,
2075 elf_elfheader (abfd)->e_shstrndx,
2076 elf_section_data (sec)->rel_hdr.sh_name));
2077 if (name == NULL)
2078 return false;
2079
65f38f15
AM		 2080 if (strncmp (name, ".rela", 5) != 0
2081 || strcmp (bfd_get_section_name (abfd, sec),
2082 name + 5) != 0)
2083 {
2084 (*_bfd_error_handler)
2085 (_("%s: bad relocation section name `%s\'"),
2086 bfd_archive_filename (abfd), name);
5d1634d7 2087 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 2088 }
2089
2090 if (htab->elf.dynobj == NULL)
2091 htab->elf.dynobj = abfd;
5bd4f169 2092
65f38f15 2093 dynobj = htab->elf.dynobj;
5bd4f169
AM		 2094 sreloc = bfd_get_section_by_name (dynobj, name);
2095 if (sreloc == NULL)
2096 {
2097 flagword flags;
2098
2099 sreloc = bfd_make_section (dynobj, name);
2100 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2101 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2102 if ((sec->flags & SEC_ALLOC) != 0)
2103 flags |= SEC_ALLOC | SEC_LOAD;
2104 if (sreloc == NULL
2105 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 2106 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
5bd4f169
AM		 2107 return false;
2108 }
65f38f15 2109 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 2110 }
2111
65f38f15
AM		 2112 /* If this is a global symbol, we count the number of
2113 relocations we need for this symbol. */
2114 if (h != NULL)
2115 {
ec338859 2116 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 2117 }
2118 else
2119 {
ec338859
AM		 2120 /* Track dynamic relocs needed for local syms too.
2121 We really need local syms available to do this
2122 easily. Oh well. */
2123
2124 asection *s;
2125 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2126 sec, r_symndx);
2127 if (s == NULL)
2128 return false;
2129
2130 head = ((struct ppc_dyn_relocs **)
2131 &elf_section_data (s)->local_dynrel);
65f38f15 2132 }
ec338859
AM		 2133
2134 p = *head;
2135 if (p == NULL || p->sec != sec)
2136 {
2137 p = ((struct ppc_dyn_relocs *)
2138 bfd_alloc (htab->elf.dynobj,
2139 (bfd_size_type) sizeof *p));
2140 if (p == NULL)
2141 return false;
2142 p->next = *head;
2143 *head = p;
2144 p->sec = sec;
2145 p->count = 0;
2146 p->pc_count = 0;
2147 }
2148
2149 p->count += 1;
2150 if (!IS_ABSOLUTE_RELOC (r_type))
2151 p->pc_count += 1;
65f38f15 2152 }
5bd4f169 2153 break;
65f38f15
AM		 2154
2155 default:
5bd4f169
AM		 2156 }
2157 }
2158
2159 return true;
2160}
2161
2162/* Return the section that should be marked against GC for a given
2163 relocation. */
2164
2165static asection *
2166ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
2167 bfd *abfd;
2168 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2169 Elf_Internal_Rela *rel;
2170 struct elf_link_hash_entry *h;
2171 Elf_Internal_Sym *sym;
2172{
2173 if (h != NULL)
2174 {
a33d1f77
AM		 2175 enum elf_ppc_reloc_type r_type;
2176
2177 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2178 switch (r_type)
5bd4f169
AM		 2179 {
2180 case R_PPC64_GNU_VTINHERIT:
2181 case R_PPC64_GNU_VTENTRY:
2182 break;
2183
2184 default:
2185 switch (h->root.type)
2186 {
2187 case bfd_link_hash_defined:
2188 case bfd_link_hash_defweak:
2189 return h->root.u.def.section;
2190
2191 case bfd_link_hash_common:
2192 return h->root.u.c.p->section;
2193
2194 default:
2195 break;
2196 }
2197 }
2198 }
2199 else
2200 {
9ad5cbcf 2201 return bfd_section_from_elf_index (abfd, sym->st_shndx);
5bd4f169
AM		 2202 }
2203
2204 return NULL;
2205}
2206
65f38f15
AM		 2207/* Update the .got, .plt. and dynamic reloc reference counts for the
2208 section being removed. */
5bd4f169
AM		 2209
2210static boolean
2211ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2212 bfd *abfd;
2213 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2214 asection *sec;
2215 const Elf_Internal_Rela *relocs;
2216{
2217 Elf_Internal_Shdr *symtab_hdr;
2218 struct elf_link_hash_entry **sym_hashes;
2219 bfd_signed_vma *local_got_refcounts;
2220 const Elf_Internal_Rela *rel, *relend;
5bd4f169 2221
ec338859
AM		 2222 elf_section_data (sec)->local_dynrel = NULL;
2223
5bd4f169
AM		 2224 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2225 sym_hashes = elf_sym_hashes (abfd);
2226 local_got_refcounts = elf_local_got_refcounts (abfd);
2227
2228 relend = relocs + sec->reloc_count;
2229 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 2230 {
2231 unsigned long r_symndx;
2232 enum elf_ppc_reloc_type r_type;
2233 struct elf_link_hash_entry *h;
5bd4f169 2234
a33d1f77
AM		 2235 r_symndx = ELF64_R_SYM (rel->r_info);
2236 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2237 switch (r_type)
2238 {
2239 case R_PPC64_GOT16:
2240 case R_PPC64_GOT16_DS:
2241 case R_PPC64_GOT16_HA:
2242 case R_PPC64_GOT16_HI:
2243 case R_PPC64_GOT16_LO:
2244 case R_PPC64_GOT16_LO_DS:
2245 if (r_symndx >= symtab_hdr->sh_info)
2246 {
2247 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2248 if (h->got.refcount > 0)
2249 h->got.refcount--;
2250 }
2251 else
2252 {
2253 if (local_got_refcounts[r_symndx] > 0)
2254 local_got_refcounts[r_symndx]--;
2255 }
2256 break;
65f38f15 2257
a33d1f77
AM		 2258 case R_PPC64_PLT16_HA:
2259 case R_PPC64_PLT16_HI:
2260 case R_PPC64_PLT16_LO:
2261 case R_PPC64_PLT32:
2262 case R_PPC64_PLT64:
2263 if (r_symndx >= symtab_hdr->sh_info)
2264 {
2265 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2266 if (h->plt.refcount > 0)
2267 h->plt.refcount--;
2268 }
2269 break;
65f38f15 2270
5d1634d7
AM		 2271 case R_PPC64_REL24:
2272 if (r_symndx >= symtab_hdr->sh_info)
2273 {
2274 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2275 if (h->plt.refcount > 0)
2276 h->plt.refcount--;
2277 }
2278 /* Fall thru. */
2279
a33d1f77
AM		 2280 case R_PPC64_REL14:
2281 case R_PPC64_REL14_BRNTAKEN:
2282 case R_PPC64_REL14_BRTAKEN:
a33d1f77
AM		 2283 case R_PPC64_REL32:
2284 case R_PPC64_REL64:
2285 if (r_symndx >= symtab_hdr->sh_info)
2286 {
2287 struct ppc_link_hash_entry *eh;
2288 struct ppc_dyn_relocs **pp;
2289 struct ppc_dyn_relocs *p;
65f38f15 2290
a33d1f77
AM		 2291 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2292 eh = (struct ppc_link_hash_entry *) h;
65f38f15 2293
a33d1f77
AM		 2294 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2295 if (p->sec == sec)
2296 {
2297 p->pc_count -= 1;
2298 p->count -= 1;
2299 if (p->count == 0)
2300 *pp = p->next;
2301 break;
2302 }
2303 }
2304 break;
65f38f15 2305
a33d1f77
AM		 2306 case R_PPC64_ADDR14:
2307 case R_PPC64_ADDR14_BRNTAKEN:
2308 case R_PPC64_ADDR14_BRTAKEN:
2309 case R_PPC64_ADDR16:
2310 case R_PPC64_ADDR16_DS:
2311 case R_PPC64_ADDR16_HA:
2312 case R_PPC64_ADDR16_HI:
2313 case R_PPC64_ADDR16_HIGHER:
2314 case R_PPC64_ADDR16_HIGHERA:
2315 case R_PPC64_ADDR16_HIGHEST:
2316 case R_PPC64_ADDR16_HIGHESTA:
2317 case R_PPC64_ADDR16_LO:
2318 case R_PPC64_ADDR16_LO_DS:
2319 case R_PPC64_ADDR24:
2320 case R_PPC64_ADDR30:
2321 case R_PPC64_ADDR32:
2322 case R_PPC64_ADDR64:
2323 case R_PPC64_UADDR16:
2324 case R_PPC64_UADDR32:
2325 case R_PPC64_UADDR64:
2326 case R_PPC64_TOC:
2327 if (r_symndx >= symtab_hdr->sh_info)
2328 {
2329 struct ppc_link_hash_entry *eh;
2330 struct ppc_dyn_relocs **pp;
2331 struct ppc_dyn_relocs *p;
65f38f15 2332
a33d1f77
AM		 2333 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2334 eh = (struct ppc_link_hash_entry *) h;
2335
2336 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2337 if (p->sec == sec)
2338 {
2339 p->count -= 1;
2340 if (p->count == 0)
2341 *pp = p->next;
2342 break;
2343 }
2344 }
2345 break;
5bd4f169 2346
a33d1f77
AM		 2347 default:
2348 break;
2349 }
2350 }
5bd4f169
AM		 2351 return true;
2352}
2353
2354/* Adjust a symbol defined by a dynamic object and referenced by a
2355 regular object. The current definition is in some section of the
2356 dynamic object, but we're not including those sections. We have to
2357 change the definition to something the rest of the link can
2358 understand. */
2359
2360static boolean
2361ppc64_elf_adjust_dynamic_symbol (info, h)
2362 struct bfd_link_info *info;
2363 struct elf_link_hash_entry *h;
2364{
65f38f15
AM		 2365 struct ppc_link_hash_table *htab;
2366 struct ppc_link_hash_entry * eh;
2367 struct ppc_dyn_relocs *p;
5bd4f169
AM		 2368 asection *s;
2369 unsigned int power_of_two;
5bd4f169 2370
65f38f15 2371 htab = ppc_hash_table (info);
5bd4f169 2372
65f38f15
AM		 2373 /* If this is a function, put it in the procedure linkage table. We
2374 will fill in the contents of the procedure linkage table later. */
5bd4f169
AM		 2375 if (h->type == STT_FUNC
2376 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2377 {
65f38f15
AM		 2378 struct elf_link_hash_entry *fdh;
2379
2380 /* If it's a function entry point, the name starts with a dot
2381 unless someone has written some poor assembly code. The ABI
2382 for .plt calls requires that there be a function descriptor
2383 sym which has the name of the function minus the dot. */
2384
2385 if (h->plt.refcount <= 0
2386 || h->root.root.string[0] != '.'
40b8271b 2387 || h->root.root.string[1] == '\0')
5bd4f169 2388 {
5bd4f169
AM		 2389 h->plt.offset = (bfd_vma) -1;
2390 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2391 return true;
2392 }
2393
65f38f15
AM		 2394 /* Find the corresponding function descriptor symbol. Create it
2395 as undefined if necessary. ppc_elf64_finish_dynamic_symbol
2396 will look it up again and create a JMP_SLOT reloc for it. */
5bd4f169 2397
65f38f15
AM		 2398 fdh = elf_link_hash_lookup (elf_hash_table (info),
2399 h->root.root.string + 1,
2400 false, false, false);
5bd4f169 2401
65f38f15 2402 if (fdh == NULL)
5bd4f169 2403 {
65f38f15
AM		 2404 asymbol *newsym;
2405
2406 /* Create it as undefined. */
2407 newsym = bfd_make_empty_symbol (htab->elf.dynobj);
2408 newsym->name = h->root.root.string + 1;
2409 newsym->section = bfd_und_section_ptr;
2410 newsym->value = 0;
2411 newsym->flags = BSF_DYNAMIC | BSF_OBJECT;
2412
2413 if ( !(_bfd_generic_link_add_one_symbol
2414 (info, htab->elf.dynobj, newsym->name, newsym->flags,
2415 newsym->section, newsym->value, NULL, false, false,
2416 (struct bfd_link_hash_entry **) &fdh)))
5bd4f169 2417 {
65f38f15 2418 return false;
5bd4f169 2419 }
5bd4f169 2420 }
40b8271b
AM		 2421
2422 while (fdh->root.type == bfd_link_hash_indirect
2423 || fdh->root.type == bfd_link_hash_warning)
2424 fdh = (struct elf_link_hash_entry *) fdh->root.u.i.link;
2425
2426 if (! info->shared
2427 && (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2428 && (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
2429 {
2430 /* This case can occur if we saw a PLT reloc in an input
2431 file, but the symbol was never referred to by a dynamic
2432 object, or if all references were garbage collected. In
2433 such a case, we don't actually need to build a procedure
2434 linkage table entry. */
2435 h->plt.offset = (bfd_vma) -1;
2436 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2437 return true;
2438 }
2439
5bd4f169
AM		 2440 return true;
2441 }
bbd7ec4a
AM		 2442 else
2443 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 2444
2445 /* If this is a weak symbol, and there is a real definition, the
2446 processor independent code will have arranged for us to see the
2447 real definition first, and we can just use the same value. */
2448 if (h->weakdef != NULL)
2449 {
2450 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2451 || h->weakdef->root.type == bfd_link_hash_defweak);
2452 h->root.u.def.section = h->weakdef->root.u.def.section;
2453 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 2454 return true;
5bd4f169
AM		 2455 }
2456
2457 /* This is a reference to a symbol defined by a dynamic object which
2458 is not a function. */
2459
2460 /* If we are creating a shared library, we must presume that the
2461 only references to the symbol are via the global offset table.
2462 For such cases we need not do anything here; the relocations will
2463 be handled correctly by relocate_section. */
2464 if (info->shared)
2465 return true;
2466
65f38f15
AM		 2467 /* If there are no references to this symbol that do not use the
2468 GOT, we don't need to generate a copy reloc. */
2469 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2470 return true;
2471
2472 eh = (struct ppc_link_hash_entry *) h;
2473 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2474 {
2475 s = p->sec->output_section;
2476 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2477 break;
2478 }
2479
2480 /* If we didn't find any dynamic relocs in read-only sections, then
5d1634d7 2481 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
65f38f15
AM		 2482 if (p == NULL)
2483 {
2484 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2485 return true;
2486 }
2487
5bd4f169
AM		 2488 /* We must allocate the symbol in our .dynbss section, which will
2489 become part of the .bss section of the executable. There will be
2490 an entry for this symbol in the .dynsym section. The dynamic
2491 object will contain position independent code, so all references
2492 from the dynamic object to this symbol will go through the global
2493 offset table. The dynamic linker will use the .dynsym entry to
2494 determine the address it must put in the global offset table, so
2495 both the dynamic object and the regular object will refer to the
2496 same memory location for the variable. */
5bd4f169
AM		 2497
2498 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2499 copy the initial value out of the dynamic object and into the
2500 runtime process image. We need to remember the offset into the
2501 .rela.bss section we are going to use. */
2502 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2503 {
65f38f15 2504 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 2505 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2506 }
2507
2508 /* We need to figure out the alignment required for this symbol. I
2509 have no idea how ELF linkers handle this. */
2510 power_of_two = bfd_log2 (h->size);
2511 if (power_of_two > 4)
2512 power_of_two = 4;
2513
2514 /* Apply the required alignment. */
65f38f15
AM		 2515 s = htab->sdynbss;
2516 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
2517 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 2518 {
65f38f15 2519 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 2520 return false;
2521 }
2522
2523 /* Define the symbol as being at this point in the section. */
2524 h->root.u.def.section = s;
2525 h->root.u.def.value = s->_raw_size;
2526
2527 /* Increment the section size to make room for the symbol. */
2528 s->_raw_size += h->size;
2529
2530 return true;
2531}
2532
65f38f15
AM		 2533/* This is the condition under which ppc64_elf_finish_dynamic_symbol
2534 will be called from elflink.h. If elflink.h doesn't call our
2535 finish_dynamic_symbol routine, we'll need to do something about
2536 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
2537#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
2538 ((DYN) \
2539 && ((INFO)->shared \
2540 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
2541 && ((H)->dynindx != -1 \
2542 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 2543
65f38f15
AM		 2544/* Allocate space in .plt, .got and associated reloc sections for
2545 dynamic relocs. */
5bd4f169
AM		 2546
2547static boolean
65f38f15
AM		 2548allocate_dynrelocs (h, inf)
2549 struct elf_link_hash_entry *h;
2550 PTR inf;
5bd4f169 2551{
65f38f15
AM		 2552 struct bfd_link_info *info;
2553 struct ppc_link_hash_table *htab;
5bd4f169 2554 asection *s;
65f38f15
AM		 2555 struct ppc_link_hash_entry *eh;
2556 struct ppc_dyn_relocs *p;
5bd4f169 2557
65f38f15
AM		 2558 if (h->root.type == bfd_link_hash_indirect
2559 || h->root.type == bfd_link_hash_warning)
2560 return true;
5bd4f169 2561
65f38f15
AM		 2562 info = (struct bfd_link_info *) inf;
2563 htab = ppc_hash_table (info);
5bd4f169 2564
65f38f15
AM		 2565 if (htab->elf.dynamic_sections_created
2566 && h->plt.refcount > 0)
5bd4f169 2567 {
65f38f15
AM		 2568 /* Make sure this symbol is output as a dynamic symbol.
2569 Undefined weak syms won't yet be marked as dynamic. */
2570 if (h->dynindx == -1
2571 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5bd4f169 2572 {
65f38f15
AM		 2573 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2574 return false;
5bd4f169 2575 }
5bd4f169 2576
65f38f15
AM		 2577 BFD_ASSERT (h->root.root.string[0] == '.'
2578 && h->root.root.string[1] != '\0');
5bd4f169 2579
65f38f15
AM		 2580 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2581 {
2582 /* Make sure the corresponding function descriptor symbol is
2583 dynamic too. */
2584
2585 if (h->dynindx != -1)
2586 {
2587 struct elf_link_hash_entry *fdh;
5bd4f169 2588
65f38f15
AM		 2589 fdh = elf_link_hash_lookup (elf_hash_table (info),
2590 h->root.root.string + 1,
2591 false, false, false);
5bd4f169 2592
65f38f15
AM		 2593 if (fdh == NULL)
2594 abort ();
5bd4f169 2595
65f38f15
AM		 2596 if (fdh->dynindx == -1
2597 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2598 {
2599 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
2600 return false;
2601 }
2602 }
2603
2604 /* If this is the first .plt entry, make room for the special
2605 first entry. */
2606 s = htab->splt;
5bd4f169 2607 if (s->_raw_size == 0)
65f38f15
AM		 2608 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
2609
2610 h->plt.offset = s->_raw_size;
5d1634d7 2611 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
65f38f15
AM		 2612
2613 /* Make room for this entry. */
2614 s->_raw_size += PLT_ENTRY_SIZE;
2615
5d1634d7
AM		 2616 /* Make room for the .stub and .glink code. */
2617 s = htab->sstub;
2618 s->_raw_size += PLT_CALL_STUB_SIZE;
65f38f15 2619
5d1634d7
AM		 2620 s = htab->sglink;
2621 if (s->_raw_size == 0)
2622 s->_raw_size += GLINK_CALL_STUB_SIZE;
2623 /* We need bigger stubs past index 32767. */
2624 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
2625 s->_raw_size += 4;
2626 s->_raw_size += 2*4;
65f38f15
AM		 2627
2628 /* We also need to make an entry in the .rela.plt section. */
2629 s = htab->srelplt;
2630 s->_raw_size += sizeof (Elf64_External_Rela);
2631 }
2632 else
2633 {
2634 h->plt.offset = (bfd_vma) -1;
2635 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2636 }
2637 }
2638 else
2639 {
2640 h->plt.offset = (bfd_vma) -1;
2641 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2642 }
2643
2644 if (h->got.refcount > 0)
2645 {
2646 boolean dyn;
2647
2648 /* Make sure this symbol is output as a dynamic symbol.
2649 Undefined weak syms won't yet be marked as dynamic. */
2650 if (h->dynindx == -1
2651 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2652 {
2653 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2654 return false;
2655 }
2656
2657 s = htab->sgot;
2658 h->got.offset = s->_raw_size;
2659 s->_raw_size += 8;
2660 dyn = htab->elf.dynamic_sections_created;
2661 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2662 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2663 }
2664 else
2665 h->got.offset = (bfd_vma) -1;
2666
2667 eh = (struct ppc_link_hash_entry *) h;
2668 if (eh->dyn_relocs == NULL)
2669 return true;
2670
2671 /* In the shared -Bsymbolic case, discard space allocated for
2672 dynamic pc-relative relocs against symbols which turn out to be
2673 defined in regular objects. For the normal shared case, discard
2674 space for relocs that have become local due to symbol visibility
2675 changes. */
2676
2677 if (info->shared)
2678 {
2679 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2680 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2681 || info->symbolic))
2682 {
2683 struct ppc_dyn_relocs **pp;
2684
2685 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 2686 {
65f38f15
AM		 2687 p->count -= p->pc_count;
2688 p->pc_count = 0;
2689 if (p->count == 0)
2690 *pp = p->next;
2691 else
2692 pp = &p->next;
5bd4f169 2693 }
65f38f15
AM		 2694 }
2695 }
2696 else
2697 {
2698 /* For the non-shared case, discard space for relocs against
2699 symbols which turn out to need copy relocs or are not
2700 dynamic. */
2701
2702 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2703 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2704 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2705 || (htab->elf.dynamic_sections_created
2706 && (h->root.type == bfd_link_hash_undefweak
2707 || h->root.type == bfd_link_hash_undefined))))
2708 {
2709 /* Make sure this symbol is output as a dynamic symbol.
2710 Undefined weak syms won't yet be marked as dynamic. */
2711 if (h->dynindx == -1
2712 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2713 {
ec338859 2714 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
65f38f15
AM		 2715 return false;
2716 }
2717
2718 /* If that succeeded, we know we'll be keeping all the
2719 relocs. */
2720 if (h->dynindx != -1)
2721 goto keep;
2722 }
2723
2724 eh->dyn_relocs = NULL;
2725
ec338859 2726 keep: ;
65f38f15
AM		 2727 }
2728
2729 /* Finally, allocate space. */
2730 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2731 {
2732 asection *sreloc = elf_section_data (p->sec)->sreloc;
2733 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
2734 }
2735
2736 return true;
2737}
2738
2739/* Find any dynamic relocs that apply to read-only sections. */
2740
2741static boolean
2742readonly_dynrelocs (h, inf)
2743 struct elf_link_hash_entry *h;
2744 PTR inf;
2745{
2746 struct ppc_link_hash_entry *eh;
2747 struct ppc_dyn_relocs *p;
2748
2749 eh = (struct ppc_link_hash_entry *) h;
2750 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2751 {
2752 asection *s = p->sec->output_section;
2753
2754 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2755 {
2756 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2757
2758 info->flags |= DF_TEXTREL;
2759
2760 /* Not an error, just cut short the traversal. */
2761 return false;
2762 }
2763 }
2764 return true;
2765}
2766
2767/* Set the sizes of the dynamic sections. */
2768
2769static boolean
2770ppc64_elf_size_dynamic_sections (output_bfd, info)
2771 bfd *output_bfd ATTRIBUTE_UNUSED;
2772 struct bfd_link_info *info;
2773{
2774 struct ppc_link_hash_table *htab;
2775 bfd *dynobj;
2776 asection *s;
2777 boolean relocs;
2778 bfd *ibfd;
2779
2780 htab = ppc_hash_table (info);
2781 dynobj = htab->elf.dynobj;
2782 if (dynobj == NULL)
2783 abort ();
2784
2785 if (htab->elf.dynamic_sections_created)
2786 {
2787 /* Set the contents of the .interp section to the interpreter. */
2788 if (! info->shared)
2789 {
2790 s = bfd_get_section_by_name (dynobj, ".interp");
2791 if (s == NULL)
2792 abort ();
2793 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2794 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2795 }
2796 }
2797
2798 /* Set up .got offsets for local syms, and space for local dynamic
2799 relocs. */
2800 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2801 {
2802 bfd_signed_vma *local_got;
2803 bfd_signed_vma *end_local_got;
2804 bfd_size_type locsymcount;
2805 Elf_Internal_Shdr *symtab_hdr;
2806 asection *srel;
2807
2808 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2809 continue;
2810
2811 for (s = ibfd->sections; s != NULL; s = s->next)
2812 {
ec338859 2813 struct ppc_dyn_relocs *p;
65f38f15 2814
ec338859
AM		 2815 for (p = *((struct ppc_dyn_relocs **)
2816 &elf_section_data (s)->local_dynrel);
2817 p != NULL;
2818 p = p->next)
65f38f15 2819 {
ec338859
AM		 2820 if (!bfd_is_abs_section (p->sec)
2821 && bfd_is_abs_section (p->sec->output_section))
2822 {
2823 /* Input section has been discarded, either because
2824 it is a copy of a linkonce section or due to
2825 linker script /DISCARD/, so we'll be discarding
2826 the relocs too. */
2827 }
2828 else
2829 {
2830 srel = elf_section_data (p->sec)->sreloc;
2831 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
2832 }
65f38f15
AM		 2833 }
2834 }
2835
2836 local_got = elf_local_got_refcounts (ibfd);
2837 if (!local_got)
2838 continue;
2839
2840 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2841 locsymcount = symtab_hdr->sh_info;
2842 end_local_got = local_got + locsymcount;
2843 s = htab->sgot;
2844 srel = htab->srelgot;
2845 for (; local_got < end_local_got; ++local_got)
2846 {
2847 if (*local_got > 0)
5bd4f169 2848 {
65f38f15
AM		 2849 *local_got = s->_raw_size;
2850 s->_raw_size += 8;
2851 if (info->shared)
2852 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 2853 }
65f38f15
AM		 2854 else
2855 *local_got = (bfd_vma) -1;
2856 }
2857 }
2858
2859 /* Allocate global sym .plt and .got entries, and space for global
2860 sym dynamic relocs. */
2861 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2862
2863 /* We now have determined the sizes of the various dynamic sections.
2864 Allocate memory for them. */
2865 relocs = false;
2866 for (s = dynobj->sections; s != NULL; s = s->next)
2867 {
5d1634d7
AM		 2868 bfd_vma size;
2869
65f38f15
AM		 2870 if ((s->flags & SEC_LINKER_CREATED) == 0)
2871 continue;
2872
2873 if (s == htab->splt
2874 || s == htab->sgot
5d1634d7 2875 || s == htab->sstub
65f38f15
AM		 2876 || s == htab->sglink)
2877 {
2878 /* Strip this section if we don't need it; see the
2879 comment below. */
5bd4f169 2880 }
65f38f15 2881 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 2882 {
2883 if (s->_raw_size == 0)
2884 {
2885 /* If we don't need this section, strip it from the
2886 output file. This is mostly to handle .rela.bss and
2887 .rela.plt. We must create both sections in
2888 create_dynamic_sections, because they must be created
2889 before the linker maps input sections to output
2890 sections. The linker does that before
2891 adjust_dynamic_symbol is called, and it is that
2892 function which decides whether anything needs to go
2893 into these sections. */
5bd4f169
AM		 2894 }
2895 else
2896 {
65f38f15
AM		 2897 if (s != htab->srelplt)
2898 relocs = true;
5bd4f169
AM		 2899
2900 /* We use the reloc_count field as a counter if we need
2901 to copy relocs into the output file. */
2902 s->reloc_count = 0;
2903 }
2904 }
65f38f15 2905 else
5bd4f169
AM		 2906 {
2907 /* It's not one of our sections, so don't allocate space. */
2908 continue;
2909 }
2910
65f38f15 2911 if (s->_raw_size == 0)
5bd4f169
AM		 2912 {
2913 _bfd_strip_section_from_output (info, s);
2914 continue;
2915 }
2916
65f38f15
AM		 2917 /* Allocate memory for the section contents. We use bfd_zalloc
2918 here in case unused entries are not reclaimed before the
2919 section's contents are written out. This should not happen,
2920 but this way if it does, we get a R_PPC64_NONE reloc instead
2921 of garbage. */
5d1634d7
AM		 2922 size = s->_raw_size;
2923 if (s == htab->sstub)
2924 {
2925 /* .stub may grow. Allocate enough for the maximum growth. */
2926 size += (size + 65536 + 65535) / 65536 * 4;
2927 }
2928 s->contents = (bfd_byte *) bfd_zalloc (dynobj, size);
65f38f15 2929 if (s->contents == NULL)
5bd4f169
AM		 2930 return false;
2931 }
2932
2933 if (elf_hash_table (info)->dynamic_sections_created)
2934 {
2935 /* Add some entries to the .dynamic section. We fill in the
2936 values later, in ppc64_elf_finish_dynamic_sections, but we
2937 must add the entries now so that we get the correct size for
2938 the .dynamic section. The DT_DEBUG entry is filled in by the
2939 dynamic linker and used by the debugger. */
dc810e39
AM		 2940#define add_dynamic_entry(TAG, VAL) \
2941 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2942
2943 if (!info->shared)
5bd4f169 2944 {
dc810e39 2945 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 2946 return false;
2947 }
2948
65f38f15 2949 if (htab->splt->_raw_size != 0)
5bd4f169 2950 {
dc810e39
AM		 2951 if (!add_dynamic_entry (DT_PLTGOT, 0)
2952 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2953 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 2954 || !add_dynamic_entry (DT_JMPREL, 0)
2955 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5bd4f169
AM		 2956 return false;
2957 }
2958
2959 if (relocs)
2960 {
dc810e39
AM		 2961 if (!add_dynamic_entry (DT_RELA, 0)
2962 || !add_dynamic_entry (DT_RELASZ, 0)
2963 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 2964 return false;
5bd4f169 2965
65f38f15
AM		 2966 /* If any dynamic relocs apply to a read-only section,
2967 then we need a DT_TEXTREL entry. */
2968 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
5bd4f169 2969
65f38f15 2970 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 2971 {
65f38f15
AM		 2972 if (!add_dynamic_entry (DT_TEXTREL, 0))
2973 return false;
5bd4f169 2974 }
5bd4f169 2975 }
5bd4f169 2976 }
65f38f15 2977#undef add_dynamic_entry
5bd4f169
AM		 2978
2979 return true;
2980}
2981
2982/* Called after we have seen all the input files/sections, but before
2983 final symbol resolution and section placement has been determined.
2984
2985 We use this hook to provide a value for TOCstart, which we store in
5d1634d7 2986 the output bfd elf_gp. */
5bd4f169 2987
5d1634d7
AM		 2988boolean
2989ppc64_elf_set_toc (obfd, info)
2990 bfd *obfd;
5bd4f169
AM		 2991 struct bfd_link_info *info;
2992{
5d1634d7 2993 if (!info->relocateable)
5bd4f169
AM		 2994 {
2995 asection *s;
2996 bfd_vma TOCstart;
2997
5d1634d7 2998 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
5bd4f169 2999 order. The TOC starts where the first of these sections starts. */
5d1634d7 3000 s = bfd_get_section_by_name (obfd, ".got");
5bd4f169 3001 if (s == NULL)
5d1634d7 3002 s = bfd_get_section_by_name (obfd, ".toc");
5bd4f169 3003 if (s == NULL)
5d1634d7 3004 s = bfd_get_section_by_name (obfd, ".tocbss");
5bd4f169 3005 if (s == NULL)
5d1634d7 3006 s = bfd_get_section_by_name (obfd, ".plt");
5bd4f169
AM		 3007 if (s == NULL)
3008 {
3009 /* This may happen for
3010 o references to TOC base (SYM@toc / TOC[tc0]) without a
3011 .toc directive
3012 o bad linker script
3013 o --gc-sections and empty TOC sections
3014
3015 FIXME: Warn user? */
3016
3017 /* Look for a likely section. We probably won't even be
3018 using TOCstart. */
5d1634d7 3019 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3020 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
3021 == (SEC_ALLOC | SEC_SMALL_DATA))
3022 break;
3023 if (s == NULL)
5d1634d7 3024 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3025 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
3026 == (SEC_ALLOC | SEC_SMALL_DATA))
3027 break;
3028 if (s == NULL)
5d1634d7 3029 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3030 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
3031 break;
3032 if (s == NULL)
5d1634d7 3033 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3034 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
3035 break;
3036 }
3037
3038 TOCstart = 0;
3039 if (s != NULL)
3040 TOCstart = s->output_section->vma + s->output_offset;
3041
5d1634d7
AM		 3042 elf_gp (obfd) = TOCstart;
3043 }
3044 return true;
3045}
3046
3047/* PowerPC64 .plt entries are 24 bytes long, which doesn't divide
3048 evenly into 64k. Sometimes with a large enough .plt, we'll need to
3049 use offsets differing in the high 16 bits when accessing a .plt
3050 entry from a .plt call stub. This function adjusts the size of
3051 .stub to accommodate the extra stub instruction needed in such
3052 cases. */
3053
3054boolean
3055ppc64_elf_size_stubs (obfd, info, changed)
3056 bfd *obfd;
3057 struct bfd_link_info *info;
3058 int *changed;
3059{
3060 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3061 bfd_vma plt_offset, next_64k;
3062 long base, num, extra;
3063
3064 /* .plt and .stub should be both present, or both absent. */
3065 if ((htab->splt == NULL || htab->splt->_raw_size == 0)
3066 != (htab->sstub == NULL || htab->sstub->_raw_size == 0))
3067 abort ();
3068
3069 /* If no .plt, then nothing to do. */
3070 if (htab->splt == NULL || htab->splt->_raw_size == 0)
3071 return true;
3072
3073 plt_offset = (htab->splt->output_section->vma
3074 + htab->splt->output_offset
3075 - elf_gp (obfd));
3076 next_64k = (plt_offset + 65535) & -65536;
3077
3078 /* If the .plt doesn't have any entries crossing a 64k boundary,
3079 then there is no need for bigger stubs. */
3080 if (next_64k <= plt_offset + htab->splt->_raw_size)
3081 return true;
3082
3083 /* OK, so we have at least one transition. Since .plt entries are
3084 24 bytes long, we'll strike it lucky every 3*64k, with the 64k
3085 boundary between .plt entries. */
3086 base = next_64k / 65536;
3087 num = (plt_offset + htab->splt->_raw_size - next_64k) / 65536;
3088 extra = (base % 3 + num + 1) * 2 / 3;
3089
3090 /* Allow one extra instruction for each EXTRA. The change in .stub
3091 may change the location of .toc and .plt. .toc and .plt ought to
3092 move as a group, but someone might be playing with eg. .plt
3093 alignment, so don't allow .stub size to decrease. */
3094 if (htab->sstub->_cooked_size < htab->sstub->_raw_size + extra * 4)
3095 {
3096 htab->sstub->_cooked_size = htab->sstub->_raw_size + extra * 4;
3097 *changed = true;
3098 }
3099 return true;
3100}
3101
3102/* Build a .plt call stub. */
3103
3104static bfd_byte *
3105build_plt_stub (obfd, p, offset, glink)
3106 bfd *obfd;
3107 bfd_byte *p;
3108 int offset;
3109 int glink;
3110{
3111#define PPC_LO(v) ((v) & 0xffff)
3112#define PPC_HI(v) (((v) >> 16) & 0xffff)
3113#define PPC_HA(v) PPC_HI ((v) + 0x8000)
3114
3115 if (glink)
3116 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
3117 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
3118 if (!glink)
3119 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
3120 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3121 if (PPC_HA (offset + 8) != PPC_HA (offset))
3122 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3123 offset += 8;
3124 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
3125 if (PPC_HA (offset + 8) != PPC_HA (offset))
3126 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3127 offset += 8;
3128 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
3129 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3130 bfd_put_32 (obfd, BCTR, p), p += 4;
3131 return p;
3132}
3133
3134/* Build the stubs for one function call. */
3135
3136static boolean
3137build_one_stub (h, inf)
3138 struct elf_link_hash_entry *h;
3139 PTR inf;
3140{
3141 struct bfd_link_info *info;
3142 struct ppc_link_hash_table *htab;
3143
3144 if (h->root.type == bfd_link_hash_indirect
3145 || h->root.type == bfd_link_hash_warning)
3146 return true;
3147
3148 info = (struct bfd_link_info *) inf;
3149 htab = ppc_hash_table (info);
3150
3151 if (htab->elf.dynamic_sections_created
3152 && h->plt.offset != (bfd_vma) -1)
3153 {
3154 asection *s;
3155 bfd_vma plt_r2;
3156 bfd_byte *p;
3157 unsigned int indx;
3158
3159 /* Point the function at the linkage stub. This works because
3160 the only references to the function code sym are calls.
3161 Function pointer comparisons use the function descriptor. */
3162 s = htab->sstub;
3163 h->root.type = bfd_link_hash_defined;
3164 h->root.u.def.section = s;
3165 h->root.u.def.value = s->_cooked_size;
3166
3167 /* Build the .plt call stub. */
3168 plt_r2 = (htab->splt->output_section->vma
3169 + htab->splt->output_offset
3170 + h->plt.offset
3171 - elf_gp (htab->splt->output_section->owner)
3172 - TOC_BASE_OFF);
3173
3174 if (plt_r2 + 0x80000000 > 0xffffffff)
3175 {
3176 (*_bfd_error_handler)
3177 (_("linkage table overflow against `%s'"),
3178 h->root.root.string);
3179 bfd_set_error (bfd_error_bad_value);
3180 htab->plt_overflow = true;
3181 return false;
3182 }
3183 p = s->contents + s->_cooked_size;
3184 p = build_plt_stub (s->owner, p, (int) plt_r2, 0);
3185 s->_cooked_size = p - s->contents;
3186
3187 /* Build the .glink lazy link call stub. */
3188 s = htab->sglink;
3189 p = s->contents + s->_cooked_size;
3190 indx = s->reloc_count;
3191 if (indx < 0x8000)
3192 {
3193 bfd_put_32 (s->owner, LI_R0_0 | indx, p);
3194 p += 4;
3195 }
3196 else
3197 {
3198 bfd_put_32 (s->owner, LIS_R0_0 | PPC_HI (indx), p);
3199 p += 4;
3200 bfd_put_32 (s->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
3201 p += 4;
3202 }
3203 bfd_put_32 (s->owner, B_DOT | ((s->contents - p) & 0x3fffffc), p);
3204 p += 4;
3205 s->_cooked_size = p - s->contents;
3206 s->reloc_count += 1;
5bd4f169 3207 }
5d1634d7
AM		 3208 return true;
3209}
5bd4f169 3210
5d1634d7
AM		 3211boolean
3212ppc64_elf_build_stubs (obfd, info)
3213 bfd *obfd;
3214 struct bfd_link_info *info;
3215{
3216 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3217 bfd_vma old_stub_size;
3218 bfd_vma plt_r2;
3219 bfd_byte *p;
3220
3221 /* If no .plt stubs, then nothing to do. */
3222 if (htab->sstub == NULL || htab->sstub->_raw_size == 0)
3223 return true;
3224
3225 old_stub_size = htab->sstub->_cooked_size;
3226 htab->sstub->_cooked_size = 0;
3227
3228 /* Build the .glink plt call stub. */
3229 plt_r2 = (htab->splt->output_section->vma
3230 + htab->splt->output_offset
3231 - elf_gp (obfd)
3232 - TOC_BASE_OFF);
3233 p = htab->sglink->contents;
3234 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
3235 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
3236 {
3237 bfd_put_32 (htab->sglink->owner, NOP, p);
3238 p += 4;
3239 }
3240 htab->sglink->_cooked_size = p - htab->sglink->contents;
3241
3242 /* Use reloc_count to count entries. */
3243 htab->sglink->reloc_count = 0;
3244
3245 elf_link_hash_traverse (&htab->elf, build_one_stub, (PTR) info);
3246 htab->sglink->reloc_count = 0;
3247
3248 if (htab->plt_overflow)
3249 return false;
3250
3251 if (old_stub_size != htab->sstub->_cooked_size
3252 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
3253 {
3254 (*_bfd_error_handler)
3255 (_("stub section size doesn't match calculated size"));
3256 bfd_set_error (bfd_error_bad_value);
3257 return false;
3258 }
3259 return true;
5bd4f169
AM		 3260}
3261
3262/* Set up any other section flags and such that may be necessary. */
3263
3264static boolean
3265ppc64_elf_fake_sections (abfd, shdr, asect)
3266 bfd *abfd ATTRIBUTE_UNUSED;
3267 Elf64_Internal_Shdr *shdr;
3268 asection *asect;
3269{
3270 if ((asect->flags & SEC_EXCLUDE) != 0)
3271 shdr->sh_flags |= SHF_EXCLUDE;
3272
3273 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
3274 shdr->sh_type = SHT_ORDERED;
3275
3276 return true;
3277}
3278
3279/* The RELOCATE_SECTION function is called by the ELF backend linker
3280 to handle the relocations for a section.
3281
3282 The relocs are always passed as Rela structures; if the section
3283 actually uses Rel structures, the r_addend field will always be
3284 zero.
3285
3286 This function is responsible for adjust the section contents as
3287 necessary, and (if using Rela relocs and generating a
3288 relocateable output file) adjusting the reloc addend as
3289 necessary.
3290
3291 This function does not have to worry about setting the reloc
3292 address or the reloc symbol index.
3293
3294 LOCAL_SYMS is a pointer to the swapped in local symbols.
3295
3296 LOCAL_SECTIONS is an array giving the section in the input file
3297 corresponding to the st_shndx field of each local symbol.
3298
3299 The global hash table entry for the global symbols can be found
3300 via elf_sym_hashes (input_bfd).
3301
3302 When generating relocateable output, this function must handle
3303 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3304 going to be the section symbol corresponding to the output
3305 section, which means that the addend must be adjusted
3306 accordingly. */
3307
3308static boolean
3309ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
3310 contents, relocs, local_syms, local_sections)
3311 bfd *output_bfd;
3312 struct bfd_link_info *info;
3313 bfd *input_bfd;
3314 asection *input_section;
3315 bfd_byte *contents;
3316 Elf_Internal_Rela *relocs;
3317 Elf_Internal_Sym *local_syms;
3318 asection **local_sections;
3319{
65f38f15 3320 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3321 Elf_Internal_Shdr *symtab_hdr;
3322 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 3323 Elf_Internal_Rela *rel;
3324 Elf_Internal_Rela *relend;
5bd4f169
AM		 3325 bfd_vma *local_got_offsets;
3326 bfd_vma TOCstart;
3327 boolean ret = true;
5bd4f169 3328
65f38f15 3329 /* Initialize howto table if needed. */
5bd4f169 3330 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 3331 ppc_howto_init ();
3332
65f38f15 3333 htab = ppc_hash_table (info);
5bd4f169 3334 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 3335 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 3336 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3337 sym_hashes = elf_sym_hashes (input_bfd);
65f38f15 3338
5bd4f169
AM		 3339 rel = relocs;
3340 relend = relocs + input_section->reloc_count;
3341 for (; rel < relend; rel++)
3342 {
3343 enum elf_ppc_reloc_type r_type;
3344 bfd_vma offset;
3345 bfd_vma addend;
3346 bfd_reloc_status_type r;
3347 Elf_Internal_Sym *sym;
3348 asection *sec;
3349 struct elf_link_hash_entry *h;
3350 const char *sym_name;
5bd4f169
AM		 3351 unsigned long r_symndx;
3352 bfd_vma relocation;
65f38f15 3353 boolean unresolved_reloc;
dc810e39 3354 long insn;
5bd4f169
AM		 3355
3356 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169
AM		 3357 r_symndx = ELF64_R_SYM (rel->r_info);
3358
3359 if (info->relocateable)
3360 {
3361 /* This is a relocatable link. We don't have to change
3362 anything, unless the reloc is against a section symbol,
3363 in which case we have to adjust according to where the
3364 section symbol winds up in the output section. */
3365 if (r_symndx < symtab_hdr->sh_info)
3366 {
3367 sym = local_syms + r_symndx;
3368 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3369 {
3370 sec = local_sections[r_symndx];
65f38f15 3371 rel->r_addend += sec->output_offset + sym->st_value;
5bd4f169
AM		 3372 }
3373 }
5bd4f169
AM		 3374 continue;
3375 }
3376
3377 /* This is a final link. */
3378
65f38f15
AM		 3379 offset = rel->r_offset;
3380 addend = rel->r_addend;
3381 r = bfd_reloc_other;
3382 sym = (Elf_Internal_Sym *) 0;
3383 sec = (asection *) 0;
3384 h = (struct elf_link_hash_entry *) 0;
3385 sym_name = (const char *) 0;
3386 unresolved_reloc = false;
3387
5bd4f169
AM		 3388 if (r_type == R_PPC64_TOC)
3389 {
3390 /* Relocation value is TOC base. Symbol is ignored. */
3391 relocation = TOCstart + TOC_BASE_OFF;
3392 }
3393 else if (r_symndx < symtab_hdr->sh_info)
3394 {
3395 /* It's a local symbol. */
3396 sym = local_syms + r_symndx;
3397 sec = local_sections[r_symndx];
3398 sym_name = "<local symbol>";
3399
f8df10f4
JJ		 3400 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
3401 addend = rel->r_addend;
5bd4f169
AM		 3402 }
3403 else
3404 {
3405 /* It's a global symbol. */
3406 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3407 while (h->root.type == bfd_link_hash_indirect
3408 || h->root.type == bfd_link_hash_warning)
3409 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3410 sym_name = h->root.root.string;
65f38f15 3411 relocation = 0;
5bd4f169
AM		 3412 if (h->root.type == bfd_link_hash_defined
3413 || h->root.type == bfd_link_hash_defweak)
3414 {
3415 sec = h->root.u.def.section;
65f38f15
AM		 3416 if (sec->output_section == NULL)
3417 /* Set a flag that will be cleared later if we find a
3418 relocation value for this symbol. output_section
3419 is typically NULL for symbols satisfied by a shared
3420 library. */
3421 unresolved_reloc = true;
5bd4f169
AM		 3422 else
3423 relocation = (h->root.u.def.value
3424 + sec->output_section->vma
3425 + sec->output_offset);
3426 }
3427 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 3428 ;
671bae9c 3429 else if (info->shared
65f38f15
AM		 3430 && (!info->symbolic || info->allow_shlib_undefined)
3431 && !info->no_undefined
3432 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3433 ;
5bd4f169
AM		 3434 else
3435 {
3436 if (! ((*info->callbacks->undefined_symbol)
3437 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 3438 offset, (!info->shared
3439 || info->no_undefined
3440 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169
AM		 3441 return false;
3442 relocation = 0;
3443 }
3444 }
3445
65f38f15 3446 /* First handle relocations that tweak non-addend part of insn. */
86c76c7b 3447 insn = 0;
65f38f15 3448 switch (r_type)
5bd4f169
AM		 3449 {
3450 default:
65f38f15 3451 break;
5bd4f169 3452
65f38f15
AM		 3453 /* Branch taken prediction relocations. */
3454 case R_PPC64_ADDR14_BRTAKEN:
3455 case R_PPC64_REL14_BRTAKEN:
86c76c7b
AM		 3456 insn = 0x01 << 21; /* Set 't' bit, lowest bit of BO field. */
3457 /* Fall thru. */
65f38f15 3458
86c76c7b 3459 /* Branch not taken prediction relocations. */
65f38f15
AM		 3460 case R_PPC64_ADDR14_BRNTAKEN:
3461 case R_PPC64_REL14_BRNTAKEN:
86c76c7b
AM		 3462 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
3463 /* Set 'a' bit. This is 0b00010 in BO field for branch on CR(BI)
3464 insns (BO == 001at or 011at), and 0b01000 for branch on CTR
3465 insns (BO == 1a00t or 1a01t). */
3466 if ((insn & (0x14 << 21)) == (0x04 << 21))
3467 insn |= 0x02 << 21;
3468 else if ((insn & (0x14 << 21)) == (0x10 << 21))
3469 insn |= 0x08 << 21;
65f38f15 3470 else
86c76c7b
AM		 3471 break;
3472
65f38f15
AM		 3473 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3474 break;
5bd4f169 3475
65f38f15
AM		 3476 case R_PPC64_REL24:
3477 case R_PPC64_ADDR24:
5bd4f169 3478 /* An ADDR24 or REL24 branching to a linkage function may be
65f38f15 3479 followed by a nop that we have to replace with a ld in
5bd4f169
AM		 3480 order to restore the TOC base pointer. Only calls to
3481 shared objects need to alter the TOC base. These are
3482 recognized by their need for a PLT entry. */
3483 if (h != NULL
3484 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
3485 /* Make sure that there really is an instruction after
3486 the branch that we can decode. */
65f38f15 3487 && offset + 8 <= input_section->_cooked_size)
5bd4f169
AM		 3488 {
3489 bfd_byte *pnext;
5bd4f169 3490
65f38f15 3491 pnext = contents + offset + 4;
5bd4f169
AM		 3492 insn = bfd_get_32 (input_bfd, pnext);
3493
3494 if (insn == 0x60000000 /* nop (ori r0,r0,0) */
3495 || insn == 0x4def7b82 /* cror 15,15,15 */
dc810e39 3496 || insn == 0x4ffffb82) /* cror 31,31,31 */
5bd4f169 3497 {
dc810e39
AM		 3498 bfd_put_32 (input_bfd,
3499 (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
3500 pnext);
5bd4f169
AM		 3501 }
3502 }
65f38f15
AM		 3503 break;
3504 }
5bd4f169 3505
65f38f15
AM		 3506 /* Set `addend'. */
3507 switch (r_type)
3508 {
3509 default:
3510 (*_bfd_error_handler)
3511 (_("%s: unknown relocation type %d for symbol %s"),
3512 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 3513
65f38f15
AM		 3514 bfd_set_error (bfd_error_bad_value);
3515 ret = false;
3516 continue;
5bd4f169 3517
65f38f15
AM		 3518 case R_PPC64_NONE:
3519 case R_PPC_GNU_VTINHERIT:
3520 case R_PPC_GNU_VTENTRY:
3521 continue;
5bd4f169
AM		 3522
3523 /* GOT16 relocations. Like an ADDR16 using the symbol's
3524 address in the GOT as relocation value instead of the
3525 symbols value itself. Also, create a GOT entry for the
3526 symbol and put the symbol value there. */
65f38f15
AM		 3527 case R_PPC64_GOT16:
3528 case R_PPC64_GOT16_LO:
3529 case R_PPC64_GOT16_HI:
3530 case R_PPC64_GOT16_HA:
3531 case R_PPC64_GOT16_DS:
3532 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 3533 {
3534 /* Relocation is to the entry for this symbol in the global
3535 offset table. */
3536 bfd_vma off;
65f38f15
AM		 3537
3538 if (htab->sgot == NULL)
3539 abort ();
5bd4f169
AM		 3540
3541 if (h != NULL)
3542 {
65f38f15 3543 boolean dyn;
5bd4f169 3544
65f38f15
AM		 3545 off = h->got.offset;
3546 dyn = htab->elf.dynamic_sections_created;
3547 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 3548 || (info->shared
65f38f15
AM		 3549 && (info->symbolic
3550 || h->dynindx == -1
3551 || (h->elf_link_hash_flags
3552 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 3553 && (h->elf_link_hash_flags
3554 & ELF_LINK_HASH_DEF_REGULAR)))
3555 {
3556 /* This is actually a static link, or it is a
3557 -Bsymbolic link and the symbol is defined
65f38f15
AM		 3558 locally, or the symbol was forced to be local
3559 because of a version file. We must initialize
3560 this entry in the global offset table. Since the
3561 offset must always be a multiple of 8, we use the
3562 least significant bit to record whether we have
5bd4f169
AM		 3563 initialized it already.
3564
65f38f15 3565 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 3566 relocation entry to initialize the value. This
3567 is done in the finish_dynamic_symbol routine. */
3568 if ((off & 1) != 0)
3569 off &= ~1;
3570 else
3571 {
3572 bfd_put_64 (output_bfd, relocation,
65f38f15 3573 htab->sgot->contents + off);
5bd4f169
AM		 3574 h->got.offset |= 1;
3575 }
3576 }
65f38f15
AM		 3577 else
3578 unresolved_reloc = false;
5bd4f169
AM		 3579 }
3580 else
3581 {
65f38f15
AM		 3582 if (local_got_offsets == NULL)
3583 abort ();
5bd4f169
AM		 3584
3585 off = local_got_offsets[r_symndx];
3586
65f38f15 3587 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 3588 the least significant bit to record whether we have
3589 already processed this entry. */
3590 if ((off & 1) != 0)
3591 off &= ~1;
3592 else
3593 {
65f38f15
AM		 3594 bfd_put_64 (output_bfd, relocation,
3595 htab->sgot->contents + off);
5bd4f169
AM		 3596
3597 if (info->shared)
3598 {
5bd4f169 3599 Elf_Internal_Rela outrel;
65f38f15 3600 Elf64_External_Rela *loc;
5bd4f169
AM		 3601
3602 /* We need to generate a R_PPC64_RELATIVE reloc
3603 for the dynamic linker. */
65f38f15
AM		 3604 outrel.r_offset = (htab->sgot->output_section->vma
3605 + htab->sgot->output_offset
5bd4f169
AM		 3606 + off);
3607 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3608 outrel.r_addend = relocation;
65f38f15
AM		 3609 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3610 loc += htab->srelgot->reloc_count++;
3611 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 3612 }
3613
3614 local_got_offsets[r_symndx] |= 1;
3615 }
3616 }
3617
65f38f15
AM		 3618 if (off >= (bfd_vma) -2)
3619 abort ();
3620
3621 relocation = htab->sgot->output_offset + off;
3622
5bd4f169
AM		 3623 /* TOC base (r2) is TOC start plus 0x8000. */
3624 addend -= TOC_BASE_OFF;
5bd4f169 3625 }
65f38f15
AM		 3626 break;
3627
3628 case R_PPC64_PLT16_HA:
3629 case R_PPC64_PLT16_HI:
3630 case R_PPC64_PLT16_LO:
3631 case R_PPC64_PLT32:
3632 case R_PPC64_PLT64:
3633 /* Relocation is to the entry for this symbol in the
3634 procedure linkage table. */
3635
3636 /* Resolve a PLT reloc against a local symbol directly,
3637 without using the procedure linkage table. */
3638 if (h == NULL)
3639 break;
3640
3641 if (h->plt.offset == (bfd_vma) -1
3642 || htab->splt == NULL)
3643 {
3644 /* We didn't make a PLT entry for this symbol. This
3645 happens when statically linking PIC code, or when
3646 using -Bsymbolic. */
3647 break;
3648 }
3649
3650 relocation = (htab->splt->output_section->vma
3651 + htab->splt->output_offset
3652 + h->plt.offset);
3653 unresolved_reloc = false;
3654 break;
5bd4f169
AM		 3655
3656 /* TOC16 relocs. We want the offset relative to the TOC base,
3657 which is the address of the start of the TOC plus 0x8000.
3658 The TOC consists of sections .got, .toc, .tocbss, and .plt,
3659 in this order. */
65f38f15
AM		 3660 case R_PPC64_TOC16:
3661 case R_PPC64_TOC16_LO:
3662 case R_PPC64_TOC16_HI:
3663 case R_PPC64_TOC16_DS:
3664 case R_PPC64_TOC16_LO_DS:
3665 case R_PPC64_TOC16_HA:
5bd4f169 3666 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 3667 break;
3668
3669 /* Relocate against the beginning of the section. */
65f38f15
AM		 3670 case R_PPC64_SECTOFF:
3671 case R_PPC64_SECTOFF_LO:
3672 case R_PPC64_SECTOFF_HI:
3673 case R_PPC64_SECTOFF_DS:
3674 case R_PPC64_SECTOFF_LO_DS:
3675 case R_PPC64_SECTOFF_HA:
3676 if (sec != (asection *) 0)
3677 addend -= sec->output_section->vma;
5bd4f169
AM		 3678 break;
3679
5d1634d7
AM		 3680 case R_PPC64_REL24:
3681 break;
3682
65f38f15
AM		 3683 /* Relocations that may need to be propagated if this is a
3684 dynamic object. */
3685 case R_PPC64_REL14:
3686 case R_PPC64_REL14_BRNTAKEN:
3687 case R_PPC64_REL14_BRTAKEN:
65f38f15
AM		 3688 case R_PPC64_REL32:
3689 case R_PPC64_REL64:
3690 case R_PPC64_ADDR14:
3691 case R_PPC64_ADDR14_BRNTAKEN:
3692 case R_PPC64_ADDR14_BRTAKEN:
3693 case R_PPC64_ADDR16:
3694 case R_PPC64_ADDR16_DS:
3695 case R_PPC64_ADDR16_HA:
3696 case R_PPC64_ADDR16_HI:
3697 case R_PPC64_ADDR16_HIGHER:
3698 case R_PPC64_ADDR16_HIGHERA:
3699 case R_PPC64_ADDR16_HIGHEST:
3700 case R_PPC64_ADDR16_HIGHESTA:
3701 case R_PPC64_ADDR16_LO:
3702 case R_PPC64_ADDR16_LO_DS:
3703 case R_PPC64_ADDR24:
3704 case R_PPC64_ADDR30:
3705 case R_PPC64_ADDR32:
3706 case R_PPC64_ADDR64:
3707 case R_PPC64_UADDR16:
3708 case R_PPC64_UADDR32:
3709 case R_PPC64_UADDR64:
ec338859
AM		 3710 /* r_symndx will be zero only for relocs against symbols
3711 from removed linkonce sections, or sections discarded by
3712 a linker script. */
5d1634d7
AM		 3713 if (r_symndx == 0)
3714 break;
3715 /* Fall thru. */
3716
3717 case R_PPC64_TOC:
3718 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 3719 break;
3720
65f38f15 3721 if ((info->shared
65f38f15
AM		 3722 && (IS_ABSOLUTE_RELOC (r_type)
3723 || (h != NULL
3724 && h->dynindx != -1
3725 && (! info->symbolic
3726 || (h->elf_link_hash_flags
3727 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3728 || (!info->shared
65f38f15
AM		 3729 && h != NULL
3730 && h->dynindx != -1
3731 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3732 && (((h->elf_link_hash_flags
3733 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3734 && (h->elf_link_hash_flags
3735 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3736 || h->root.type == bfd_link_hash_undefweak
3737 || h->root.type == bfd_link_hash_undefined)))
3738 {
3739 Elf_Internal_Rela outrel;
3740 boolean skip, relocate;
3741 asection *sreloc;
3742 Elf64_External_Rela *loc;
3743
5d1634d7
AM		 3744#if 0
3745 if (strcmp (bfd_get_section_name (output_bfd, input_section),
3746 ".opd") == 0)
3747 break;
3748#endif
3749
65f38f15
AM		 3750 /* When generating a dynamic object, these relocations
3751 are copied into the output file to be resolved at run
3752 time. */
3753
3754 skip = false;
3755
c629eae0
JJ		 3756 outrel.r_offset =
3757 _bfd_elf_section_offset (output_bfd, info, input_section,
3758 rel->r_offset);
3759 if (outrel.r_offset == (bfd_vma) -1)
3760 skip = true;
65f38f15
AM		 3761
3762 outrel.r_offset += (input_section->output_section->vma
3763 + input_section->output_offset);
3764 outrel.r_addend = addend;
3765
3766 if (skip)
3767 {
3768 relocate = false;
3769 memset (&outrel, 0, sizeof outrel);
3770 }
3771 else if (h != NULL
3772 && h->dynindx != -1
3773 && (!IS_ABSOLUTE_RELOC (r_type)
3774 || !info->shared
3775 || !info->symbolic
3776 || (h->elf_link_hash_flags
3777 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3778 {
3779 relocate = false;
3780 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
3781 }
3782 else
3783 {
3784 /* This symbol is local, or marked to become local. */
3785 outrel.r_addend += relocation;
3786 relocate = true;
3787 if (r_type == R_PPC64_ADDR64)
3788 {
3789 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3790 }
3791 else
3792 {
3793 long indx = 0;
3794
3795 if (r_type == R_PPC64_TOC || bfd_is_abs_section (sec))
3796 ;
3797 else if (sec == NULL || sec->owner == NULL)
3798 {
3799 bfd_set_error (bfd_error_bad_value);
3800 return false;
3801 }
3802 else
3803 {
3804 asection *osec;
3805
3806 osec = sec->output_section;
3807 indx = elf_section_data (osec)->dynindx;
3808
3809 /* We are turning this relocation into one
3810 against a section symbol, so subtract out
3811 the output section's address but not the
3812 offset of the input section in the output
3813 section. */
3814 outrel.r_addend -= osec->vma;
3815 }
3816
3817 outrel.r_info = ELF64_R_INFO (indx, r_type);
3818 }
3819 }
3820
3821 sreloc = elf_section_data (input_section)->sreloc;
3822 if (sreloc == NULL)
3823 abort ();
3824
3825 loc = (Elf64_External_Rela *) sreloc->contents;
3826 loc += sreloc->reloc_count++;
3827 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3828
3829 /* If this reloc is against an external symbol, it will
3830 be computed at runtime, so there's no need to do
3831 anything now. */
3832 if (! relocate)
3833 continue;
3834 }
5bd4f169
AM		 3835 break;
3836
65f38f15
AM		 3837 case R_PPC64_COPY:
3838 case R_PPC64_GLOB_DAT:
3839 case R_PPC64_JMP_SLOT:
3840 case R_PPC64_RELATIVE:
3841 /* We shouldn't ever see these dynamic relocs in relocatable
3842 files. */
3843 /* Fall thru */
3844
3845 case R_PPC64_PLTGOT16:
3846 case R_PPC64_PLTGOT16_DS:
3847 case R_PPC64_PLTGOT16_HA:
3848 case R_PPC64_PLTGOT16_HI:
3849 case R_PPC64_PLTGOT16_LO:
3850 case R_PPC64_PLTGOT16_LO_DS:
3851 case R_PPC64_PLTREL32:
3852 case R_PPC64_PLTREL64:
3853 /* These ones haven't been implemented yet. */
3854
3855 (*_bfd_error_handler)
3856 (_("%s: Relocation %s is not supported for symbol %s."),
3857 bfd_archive_filename (input_bfd),
3858 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 3859
3860 bfd_set_error (bfd_error_invalid_operation);
3861 ret = false;
3862 continue;
65f38f15 3863 }
5bd4f169 3864
65f38f15
AM		 3865 /* Do any further special processing. */
3866 switch (r_type)
3867 {
3868 default:
3869 break;
3870
3871 case R_PPC64_ADDR16_HA:
3872 case R_PPC64_ADDR16_HIGHERA:
3873 case R_PPC64_ADDR16_HIGHESTA:
3874 case R_PPC64_PLT16_HA:
3875 case R_PPC64_TOC16_HA:
3876 case R_PPC64_SECTOFF_HA:
3877 /* It's just possible that this symbol is a weak symbol
3878 that's not actually defined anywhere. In that case,
3879 'sec' would be NULL, and we should leave the symbol
3880 alone (it will be set to zero elsewhere in the link). */
3881 if (sec != NULL)
3882 /* Add 0x10000 if sign bit in 0:15 is set. */
3883 addend += ((relocation + addend) & 0x8000) << 1;
3884 break;
3885
3886 case R_PPC64_ADDR16_DS:
3887 case R_PPC64_ADDR16_LO_DS:
3888 case R_PPC64_GOT16_DS:
3889 case R_PPC64_GOT16_LO_DS:
3890 case R_PPC64_PLT16_LO_DS:
3891 case R_PPC64_SECTOFF_DS:
3892 case R_PPC64_SECTOFF_LO_DS:
3893 case R_PPC64_TOC16_DS:
3894 case R_PPC64_TOC16_LO_DS:
3895 case R_PPC64_PLTGOT16_DS:
3896 case R_PPC64_PLTGOT16_LO_DS:
3897 if (((relocation + addend) & 3) != 0)
3898 {
3899 (*_bfd_error_handler)
3900 (_("%s: error: relocation %s not a multiple of 4"),
3901 bfd_archive_filename (input_bfd),
3902 ppc64_elf_howto_table[(int) r_type]->name);
3903 bfd_set_error (bfd_error_bad_value);
3904 ret = false;
3905 continue;
3906 }
3907 break;
5bd4f169
AM		 3908 }
3909
65f38f15
AM		 3910 /* FIXME: Why do we allow debugging sections to escape this error?
3911 More importantly, why do we not emit dynamic relocs above in
3912 debugging sections (which are ! SEC_ALLOC)? If we had
3913 emitted the dynamic reloc, we could remove the fudge here. */
3914 if (unresolved_reloc
3915 && !(info->shared
3916 && (input_section->flags & SEC_DEBUGGING) != 0
3917 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3918 (*_bfd_error_handler)
3919 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3920 bfd_archive_filename (input_bfd),
3921 bfd_get_section_name (input_bfd, input_section),
3922 (long) rel->r_offset,
3923 h->root.root.string);
5bd4f169 3924
65f38f15 3925 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 3926 input_bfd,
3927 input_section,
3928 contents,
3929 offset,
3930 relocation,
3931 addend);
3932
3933 if (r == bfd_reloc_ok)
3934 ;
3935 else if (r == bfd_reloc_overflow)
3936 {
3937 const char *name;
3938
3939 if (h != NULL)
3940 {
3941 if (h->root.type == bfd_link_hash_undefweak
65f38f15 3942 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 3943 {
3944 /* Assume this is a call protected by other code that
3945 detects the symbol is undefined. If this is the case,
3946 we can safely ignore the overflow. If not, the
3947 program is hosed anyway, and a little warning isn't
3948 going to help. */
3949
3950 continue;
3951 }
3952
3953 name = h->root.root.string;
3954 }
3955 else
3956 {
3957 name = bfd_elf_string_from_elf_section (input_bfd,
3958 symtab_hdr->sh_link,
3959 sym->st_name);
3960 if (name == NULL)
3961 continue;
3962 if (*name == '\0')
3963 name = bfd_section_name (input_bfd, sec);
3964 }
3965
65f38f15
AM		 3966 if (! ((*info->callbacks->reloc_overflow)
3967 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
3968 (bfd_vma) 0, input_bfd, input_section, offset)))
5bd4f169
AM		 3969 return false;
3970 }
3971 else
3972 ret = false;
3973 }
3974
5bd4f169
AM		 3975 return ret;
3976}
3977
3978/* Finish up dynamic symbol handling. We set the contents of various
3979 dynamic sections here. */
3980
3981static boolean
3982ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
3983 bfd *output_bfd;
3984 struct bfd_link_info *info;
3985 struct elf_link_hash_entry *h;
3986 Elf_Internal_Sym *sym;
3987{
65f38f15 3988 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3989 bfd *dynobj;
3990
65f38f15
AM		 3991 htab = ppc_hash_table (info);
3992 dynobj = htab->elf.dynobj;
5bd4f169
AM		 3993
3994 if (h->plt.offset != (bfd_vma) -1)
3995 {
5bd4f169 3996 struct elf_link_hash_entry *funcdesc_h;
65f38f15
AM		 3997 Elf_Internal_Rela rela;
3998 Elf64_External_Rela *loc;
5bd4f169
AM		 3999
4000 /* This symbol has an entry in the procedure linkage table. Set
4001 it up. */
4002
5d1634d7 4003 if (htab->splt == NULL
65f38f15
AM		 4004 || htab->srelplt == NULL
4005 || htab->sglink == NULL
4006 || h->root.root.string[0] != '.'
4007 || h->root.root.string[1] == '\0')
4008 abort ();
4009
4010 /* Find its corresponding function descriptor.
5d1634d7 4011 ppc64_elf_adjust_dynamic_symbol has already set it up for us. */
5bd4f169 4012
65f38f15
AM		 4013 funcdesc_h = elf_link_hash_lookup (elf_hash_table (info),
4014 h->root.root.string + 1,
4015 false, false, false);
4016
4017 if (funcdesc_h == NULL || funcdesc_h->dynindx == -1)
4018 abort ();
4019
4020 /* Create a JMP_SLOT reloc to inform the dynamic linker to
4021 fill in the PLT entry. */
5bd4f169 4022
65f38f15
AM		 4023 rela.r_offset = (htab->splt->output_section->vma
4024 + htab->splt->output_offset
4025 + h->plt.offset);
4026 rela.r_info = ELF64_R_INFO (funcdesc_h->dynindx, R_PPC64_JMP_SLOT);
4027 rela.r_addend = 0;
4028
4029 loc = (Elf64_External_Rela *) htab->srelplt->contents;
4030 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4031 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4032 }
4033
4034 if (h->got.offset != (bfd_vma) -1)
4035 {
5bd4f169 4036 Elf_Internal_Rela rela;
65f38f15 4037 Elf64_External_Rela *loc;
5bd4f169
AM		 4038
4039 /* This symbol has an entry in the global offset table. Set it
4040 up. */
4041
65f38f15
AM		 4042 if (htab->sgot == NULL || htab->srelgot == NULL)
4043 abort ();
5bd4f169 4044
65f38f15
AM		 4045 rela.r_offset = (htab->sgot->output_section->vma
4046 + htab->sgot->output_offset
dc810e39 4047 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 4048
65f38f15
AM		 4049 /* If this is a static link, or it is a -Bsymbolic link and the
4050 symbol is defined locally or was forced to be local because
4051 of a version file, we just want to emit a RELATIVE reloc.
4052 The entry in the global offset table will already have been
4053 initialized in the relocate_section function. */
5bd4f169 4054 if (info->shared
65f38f15
AM		 4055 && (info->symbolic
4056 || h->dynindx == -1
4057 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 4058 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4059 {
65f38f15 4060 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 4061 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4062 rela.r_addend = (h->root.u.def.value
4063 + h->root.u.def.section->output_section->vma
4064 + h->root.u.def.section->output_offset);
4065 }
4066 else
4067 {
4068 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 4069 bfd_put_64 (output_bfd, (bfd_vma) 0,
4070 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 4071 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
4072 rela.r_addend = 0;
4073 }
4074
65f38f15
AM		 4075 loc = (Elf64_External_Rela *) htab->srelgot->contents;
4076 loc += htab->srelgot->reloc_count++;
4077 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4078 }
4079
4080 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4081 {
5bd4f169 4082 Elf_Internal_Rela rela;
65f38f15 4083 Elf64_External_Rela *loc;
5bd4f169 4084
65f38f15 4085 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 4086
65f38f15
AM		 4087 if (h->dynindx == -1
4088 || (h->root.type != bfd_link_hash_defined
4089 && h->root.type != bfd_link_hash_defweak)
4090 || htab->srelbss == NULL)
4091 abort ();
5bd4f169
AM		 4092
4093 rela.r_offset = (h->root.u.def.value
4094 + h->root.u.def.section->output_section->vma
4095 + h->root.u.def.section->output_offset);
4096 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
4097 rela.r_addend = 0;
65f38f15
AM		 4098 loc = (Elf64_External_Rela *) htab->srelbss->contents;
4099 loc += htab->srelbss->reloc_count++;
4100 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4101 }
4102
5bd4f169
AM		 4103 /* Mark some specially defined symbols as absolute. */
4104 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
4105 sym->st_shndx = SHN_ABS;
4106
4107 return true;
4108}
4109
65f38f15
AM		 4110/* Used to decide how to sort relocs in an optimal manner for the
4111 dynamic linker, before writing them out. */
4112
4113static enum elf_reloc_type_class
4114ppc64_elf_reloc_type_class (rela)
4115 const Elf_Internal_Rela *rela;
4116{
a33d1f77
AM		 4117 enum elf_ppc_reloc_type r_type;
4118
4119 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
4120 switch (r_type)
65f38f15
AM		 4121 {
4122 case R_PPC64_RELATIVE:
4123 return reloc_class_relative;
4124 case R_PPC64_JMP_SLOT:
4125 return reloc_class_plt;
4126 case R_PPC64_COPY:
4127 return reloc_class_copy;
4128 default:
4129 return reloc_class_normal;
4130 }
4131}
4132
5bd4f169
AM		 4133/* Finish up the dynamic sections. */
4134
4135static boolean
4136ppc64_elf_finish_dynamic_sections (output_bfd, info)
4137 bfd *output_bfd;
4138 struct bfd_link_info *info;
4139{
65f38f15
AM		 4140 struct ppc_link_hash_table *htab;
4141 bfd *dynobj;
5bd4f169 4142 asection *sdyn;
5bd4f169 4143
65f38f15
AM		 4144 htab = ppc_hash_table (info);
4145 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4146 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4147
65f38f15 4148 if (htab->elf.dynamic_sections_created)
5bd4f169 4149 {
5bd4f169
AM		 4150 Elf64_External_Dyn *dyncon, *dynconend;
4151
65f38f15
AM		 4152 if (sdyn == NULL || htab->sgot == NULL)
4153 abort ();
5bd4f169
AM		 4154
4155 dyncon = (Elf64_External_Dyn *) sdyn->contents;
4156 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4157 for (; dyncon < dynconend; dyncon++)
4158 {
4159 Elf_Internal_Dyn dyn;
5bd4f169
AM		 4160
4161 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4162
4163 switch (dyn.d_tag)
4164 {
65f38f15
AM		 4165 default:
4166 continue;
5bd4f169 4167
5d1634d7
AM		 4168 case DT_PPC64_GLINK:
4169 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
4170 + htab->sglink->output_offset);
4171 break;
4172
65f38f15 4173 case DT_PLTGOT:
5d1634d7
AM		 4174 dyn.d_un.d_ptr = (htab->splt->output_section->vma
4175 + htab->splt->output_offset);
65f38f15
AM		 4176 break;
4177
4178 case DT_JMPREL:
5d1634d7
AM		 4179 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
4180 + htab->srelplt->output_offset);
65f38f15 4181 break;
5bd4f169 4182
65f38f15 4183 case DT_PLTRELSZ:
5d1634d7
AM		 4184 dyn.d_un.d_val = htab->srelplt->_raw_size;
4185 break;
4186
4187 case DT_RELASZ:
4188 /* Don't count procedure linkage table relocs in the
4189 overall reloc count. */
4190 if (htab->srelplt != NULL)
4191 dyn.d_un.d_val -= htab->srelplt->_raw_size;
65f38f15 4192 break;
5bd4f169 4193 }
5bd4f169 4194
65f38f15 4195 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 4196 }
5bd4f169
AM		 4197 }
4198
5d1634d7
AM		 4199 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
4200 {
4201 /* Fill in the first entry in the global offset table.
4202 We use it to hold the link-time TOCbase. */
4203 bfd_put_64 (output_bfd,
4204 elf_gp (output_bfd) - TOC_BASE_OFF,
4205 htab->sgot->contents);
4206
4207 /* Set .got entry size. */
4208 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
4209 }
4210
4211 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4212 {
4213 /* Set .plt entry size. */
4214 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
4215 = PLT_ENTRY_SIZE;
4216 }
4217
5bd4f169
AM		 4218 return true;
4219}
4220
4221#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
4222#define TARGET_LITTLE_NAME "elf64-powerpcle"
4223#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
4224#define TARGET_BIG_NAME "elf64-powerpc"
4225#define ELF_ARCH bfd_arch_powerpc
4226#define ELF_MACHINE_CODE EM_PPC64
4227#define ELF_MAXPAGESIZE 0x10000
4228#define elf_info_to_howto ppc64_elf_info_to_howto
4229
4230#ifdef EM_CYGNUS_POWERPC
4231#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
4232#endif
4233
4234#ifdef EM_PPC_OLD
4235#define ELF_MACHINE_ALT2 EM_PPC_OLD
4236#endif
4237
4238#define elf_backend_want_got_sym 0
4239#define elf_backend_want_plt_sym 0
4240#define elf_backend_plt_alignment 3
4241#define elf_backend_plt_not_loaded 1
4242#define elf_backend_got_symbol_offset 0
5d1634d7
AM		 4243#define elf_backend_got_header_size 8
4244#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
5bd4f169 4245#define elf_backend_can_gc_sections 1
65f38f15 4246#define elf_backend_can_refcount 1
5bd4f169 4247
65f38f15
AM		 4248#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
4249#define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
65f38f15
AM		 4250#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
4251#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
65f38f15
AM		 4252
4253#define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
4254#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
4255#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
4256#define elf_backend_check_relocs ppc64_elf_check_relocs
4257#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
4258#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
4259#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
4260#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
4261#define elf_backend_fake_sections ppc64_elf_fake_sections
4262#define elf_backend_relocate_section ppc64_elf_relocate_section
4263#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
4264#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
4265#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 4266
4267#include "elf64-target.h"
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