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* gdb.asm/asm-source.exp (info symbol): Take another shot at
[deliverable/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] != '.'
2387 || h->root.root.string[1] == '\0'
2388 || (! info->shared
2389 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2390 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
5bd4f169 2391 {
65f38f15
AM		 2392 /* This case can occur if we saw a PLT reloc in an input
2393 file, but the symbol was never referred to by a dynamic
2394 object, or if all references were garbage collected. In
2395 such a case, we don't actually need to build a procedure
2396 linkage table entry. */
5bd4f169
AM		 2397 h->plt.offset = (bfd_vma) -1;
2398 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2399 return true;
2400 }
2401
65f38f15
AM		 2402 /* Find the corresponding function descriptor symbol. Create it
2403 as undefined if necessary. ppc_elf64_finish_dynamic_symbol
2404 will look it up again and create a JMP_SLOT reloc for it. */
5bd4f169 2405
65f38f15
AM		 2406 fdh = elf_link_hash_lookup (elf_hash_table (info),
2407 h->root.root.string + 1,
2408 false, false, false);
5bd4f169 2409
65f38f15 2410 if (fdh == NULL)
5bd4f169 2411 {
65f38f15
AM		 2412 asymbol *newsym;
2413
2414 /* Create it as undefined. */
2415 newsym = bfd_make_empty_symbol (htab->elf.dynobj);
2416 newsym->name = h->root.root.string + 1;
2417 newsym->section = bfd_und_section_ptr;
2418 newsym->value = 0;
2419 newsym->flags = BSF_DYNAMIC | BSF_OBJECT;
2420
2421 if ( !(_bfd_generic_link_add_one_symbol
2422 (info, htab->elf.dynobj, newsym->name, newsym->flags,
2423 newsym->section, newsym->value, NULL, false, false,
2424 (struct bfd_link_hash_entry **) &fdh)))
5bd4f169 2425 {
65f38f15 2426 return false;
5bd4f169 2427 }
5bd4f169 2428 }
5bd4f169
AM		 2429 return true;
2430 }
bbd7ec4a
AM		 2431 else
2432 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 2433
2434 /* If this is a weak symbol, and there is a real definition, the
2435 processor independent code will have arranged for us to see the
2436 real definition first, and we can just use the same value. */
2437 if (h->weakdef != NULL)
2438 {
2439 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2440 || h->weakdef->root.type == bfd_link_hash_defweak);
2441 h->root.u.def.section = h->weakdef->root.u.def.section;
2442 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 2443 return true;
5bd4f169
AM		 2444 }
2445
2446 /* This is a reference to a symbol defined by a dynamic object which
2447 is not a function. */
2448
2449 /* If we are creating a shared library, we must presume that the
2450 only references to the symbol are via the global offset table.
2451 For such cases we need not do anything here; the relocations will
2452 be handled correctly by relocate_section. */
2453 if (info->shared)
2454 return true;
2455
65f38f15
AM		 2456 /* If there are no references to this symbol that do not use the
2457 GOT, we don't need to generate a copy reloc. */
2458 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2459 return true;
2460
2461 eh = (struct ppc_link_hash_entry *) h;
2462 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2463 {
2464 s = p->sec->output_section;
2465 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2466 break;
2467 }
2468
2469 /* If we didn't find any dynamic relocs in read-only sections, then
5d1634d7 2470 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
65f38f15
AM		 2471 if (p == NULL)
2472 {
2473 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2474 return true;
2475 }
2476
5bd4f169
AM		 2477 /* We must allocate the symbol in our .dynbss section, which will
2478 become part of the .bss section of the executable. There will be
2479 an entry for this symbol in the .dynsym section. The dynamic
2480 object will contain position independent code, so all references
2481 from the dynamic object to this symbol will go through the global
2482 offset table. The dynamic linker will use the .dynsym entry to
2483 determine the address it must put in the global offset table, so
2484 both the dynamic object and the regular object will refer to the
2485 same memory location for the variable. */
5bd4f169
AM		 2486
2487 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2488 copy the initial value out of the dynamic object and into the
2489 runtime process image. We need to remember the offset into the
2490 .rela.bss section we are going to use. */
2491 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2492 {
65f38f15 2493 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 2494 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2495 }
2496
2497 /* We need to figure out the alignment required for this symbol. I
2498 have no idea how ELF linkers handle this. */
2499 power_of_two = bfd_log2 (h->size);
2500 if (power_of_two > 4)
2501 power_of_two = 4;
2502
2503 /* Apply the required alignment. */
65f38f15
AM		 2504 s = htab->sdynbss;
2505 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
2506 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 2507 {
65f38f15 2508 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 2509 return false;
2510 }
2511
2512 /* Define the symbol as being at this point in the section. */
2513 h->root.u.def.section = s;
2514 h->root.u.def.value = s->_raw_size;
2515
2516 /* Increment the section size to make room for the symbol. */
2517 s->_raw_size += h->size;
2518
2519 return true;
2520}
2521
65f38f15
AM		 2522/* This is the condition under which ppc64_elf_finish_dynamic_symbol
2523 will be called from elflink.h. If elflink.h doesn't call our
2524 finish_dynamic_symbol routine, we'll need to do something about
2525 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
2526#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
2527 ((DYN) \
2528 && ((INFO)->shared \
2529 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
2530 && ((H)->dynindx != -1 \
2531 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 2532
65f38f15
AM		 2533/* Allocate space in .plt, .got and associated reloc sections for
2534 dynamic relocs. */
5bd4f169
AM		 2535
2536static boolean
65f38f15
AM		 2537allocate_dynrelocs (h, inf)
2538 struct elf_link_hash_entry *h;
2539 PTR inf;
5bd4f169 2540{
65f38f15
AM		 2541 struct bfd_link_info *info;
2542 struct ppc_link_hash_table *htab;
5bd4f169 2543 asection *s;
65f38f15
AM		 2544 struct ppc_link_hash_entry *eh;
2545 struct ppc_dyn_relocs *p;
5bd4f169 2546
65f38f15
AM		 2547 if (h->root.type == bfd_link_hash_indirect
2548 || h->root.type == bfd_link_hash_warning)
2549 return true;
5bd4f169 2550
65f38f15
AM		 2551 info = (struct bfd_link_info *) inf;
2552 htab = ppc_hash_table (info);
5bd4f169 2553
65f38f15
AM		 2554 if (htab->elf.dynamic_sections_created
2555 && h->plt.refcount > 0)
5bd4f169 2556 {
65f38f15
AM		 2557 /* Make sure this symbol is output as a dynamic symbol.
2558 Undefined weak syms won't yet be marked as dynamic. */
2559 if (h->dynindx == -1
2560 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5bd4f169 2561 {
65f38f15
AM		 2562 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2563 return false;
5bd4f169 2564 }
5bd4f169 2565
65f38f15
AM		 2566 BFD_ASSERT (h->root.root.string[0] == '.'
2567 && h->root.root.string[1] != '\0');
5bd4f169 2568
65f38f15
AM		 2569 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2570 {
2571 /* Make sure the corresponding function descriptor symbol is
2572 dynamic too. */
2573
2574 if (h->dynindx != -1)
2575 {
2576 struct elf_link_hash_entry *fdh;
5bd4f169 2577
65f38f15
AM		 2578 fdh = elf_link_hash_lookup (elf_hash_table (info),
2579 h->root.root.string + 1,
2580 false, false, false);
5bd4f169 2581
65f38f15
AM		 2582 if (fdh == NULL)
2583 abort ();
5bd4f169 2584
65f38f15
AM		 2585 if (fdh->dynindx == -1
2586 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2587 {
2588 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
2589 return false;
2590 }
2591 }
2592
2593 /* If this is the first .plt entry, make room for the special
2594 first entry. */
2595 s = htab->splt;
5bd4f169 2596 if (s->_raw_size == 0)
65f38f15
AM		 2597 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
2598
2599 h->plt.offset = s->_raw_size;
5d1634d7 2600 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
65f38f15
AM		 2601
2602 /* Make room for this entry. */
2603 s->_raw_size += PLT_ENTRY_SIZE;
2604
5d1634d7
AM		 2605 /* Make room for the .stub and .glink code. */
2606 s = htab->sstub;
2607 s->_raw_size += PLT_CALL_STUB_SIZE;
65f38f15 2608
5d1634d7
AM		 2609 s = htab->sglink;
2610 if (s->_raw_size == 0)
2611 s->_raw_size += GLINK_CALL_STUB_SIZE;
2612 /* We need bigger stubs past index 32767. */
2613 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
2614 s->_raw_size += 4;
2615 s->_raw_size += 2*4;
65f38f15
AM		 2616
2617 /* We also need to make an entry in the .rela.plt section. */
2618 s = htab->srelplt;
2619 s->_raw_size += sizeof (Elf64_External_Rela);
2620 }
2621 else
2622 {
2623 h->plt.offset = (bfd_vma) -1;
2624 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2625 }
2626 }
2627 else
2628 {
2629 h->plt.offset = (bfd_vma) -1;
2630 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2631 }
2632
2633 if (h->got.refcount > 0)
2634 {
2635 boolean dyn;
2636
2637 /* Make sure this symbol is output as a dynamic symbol.
2638 Undefined weak syms won't yet be marked as dynamic. */
2639 if (h->dynindx == -1
2640 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2641 {
2642 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2643 return false;
2644 }
2645
2646 s = htab->sgot;
2647 h->got.offset = s->_raw_size;
2648 s->_raw_size += 8;
2649 dyn = htab->elf.dynamic_sections_created;
2650 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2651 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2652 }
2653 else
2654 h->got.offset = (bfd_vma) -1;
2655
2656 eh = (struct ppc_link_hash_entry *) h;
2657 if (eh->dyn_relocs == NULL)
2658 return true;
2659
2660 /* In the shared -Bsymbolic case, discard space allocated for
2661 dynamic pc-relative relocs against symbols which turn out to be
2662 defined in regular objects. For the normal shared case, discard
2663 space for relocs that have become local due to symbol visibility
2664 changes. */
2665
2666 if (info->shared)
2667 {
2668 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2669 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2670 || info->symbolic))
2671 {
2672 struct ppc_dyn_relocs **pp;
2673
2674 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 2675 {
65f38f15
AM		 2676 p->count -= p->pc_count;
2677 p->pc_count = 0;
2678 if (p->count == 0)
2679 *pp = p->next;
2680 else
2681 pp = &p->next;
5bd4f169 2682 }
65f38f15
AM		 2683 }
2684 }
2685 else
2686 {
2687 /* For the non-shared case, discard space for relocs against
2688 symbols which turn out to need copy relocs or are not
2689 dynamic. */
2690
2691 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2692 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2693 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2694 || (htab->elf.dynamic_sections_created
2695 && (h->root.type == bfd_link_hash_undefweak
2696 || h->root.type == bfd_link_hash_undefined))))
2697 {
2698 /* Make sure this symbol is output as a dynamic symbol.
2699 Undefined weak syms won't yet be marked as dynamic. */
2700 if (h->dynindx == -1
2701 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2702 {
ec338859 2703 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
65f38f15
AM		 2704 return false;
2705 }
2706
2707 /* If that succeeded, we know we'll be keeping all the
2708 relocs. */
2709 if (h->dynindx != -1)
2710 goto keep;
2711 }
2712
2713 eh->dyn_relocs = NULL;
2714
ec338859 2715 keep: ;
65f38f15
AM		 2716 }
2717
2718 /* Finally, allocate space. */
2719 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2720 {
2721 asection *sreloc = elf_section_data (p->sec)->sreloc;
2722 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
2723 }
2724
2725 return true;
2726}
2727
2728/* Find any dynamic relocs that apply to read-only sections. */
2729
2730static boolean
2731readonly_dynrelocs (h, inf)
2732 struct elf_link_hash_entry *h;
2733 PTR inf;
2734{
2735 struct ppc_link_hash_entry *eh;
2736 struct ppc_dyn_relocs *p;
2737
2738 eh = (struct ppc_link_hash_entry *) h;
2739 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2740 {
2741 asection *s = p->sec->output_section;
2742
2743 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2744 {
2745 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2746
2747 info->flags |= DF_TEXTREL;
2748
2749 /* Not an error, just cut short the traversal. */
2750 return false;
2751 }
2752 }
2753 return true;
2754}
2755
2756/* Set the sizes of the dynamic sections. */
2757
2758static boolean
2759ppc64_elf_size_dynamic_sections (output_bfd, info)
2760 bfd *output_bfd ATTRIBUTE_UNUSED;
2761 struct bfd_link_info *info;
2762{
2763 struct ppc_link_hash_table *htab;
2764 bfd *dynobj;
2765 asection *s;
2766 boolean relocs;
2767 bfd *ibfd;
2768
2769 htab = ppc_hash_table (info);
2770 dynobj = htab->elf.dynobj;
2771 if (dynobj == NULL)
2772 abort ();
2773
2774 if (htab->elf.dynamic_sections_created)
2775 {
2776 /* Set the contents of the .interp section to the interpreter. */
2777 if (! info->shared)
2778 {
2779 s = bfd_get_section_by_name (dynobj, ".interp");
2780 if (s == NULL)
2781 abort ();
2782 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2783 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2784 }
2785 }
2786
2787 /* Set up .got offsets for local syms, and space for local dynamic
2788 relocs. */
2789 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2790 {
2791 bfd_signed_vma *local_got;
2792 bfd_signed_vma *end_local_got;
2793 bfd_size_type locsymcount;
2794 Elf_Internal_Shdr *symtab_hdr;
2795 asection *srel;
2796
2797 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2798 continue;
2799
2800 for (s = ibfd->sections; s != NULL; s = s->next)
2801 {
ec338859 2802 struct ppc_dyn_relocs *p;
65f38f15 2803
ec338859
AM		 2804 for (p = *((struct ppc_dyn_relocs **)
2805 &elf_section_data (s)->local_dynrel);
2806 p != NULL;
2807 p = p->next)
65f38f15 2808 {
ec338859
AM		 2809 if (!bfd_is_abs_section (p->sec)
2810 && bfd_is_abs_section (p->sec->output_section))
2811 {
2812 /* Input section has been discarded, either because
2813 it is a copy of a linkonce section or due to
2814 linker script /DISCARD/, so we'll be discarding
2815 the relocs too. */
2816 }
2817 else
2818 {
2819 srel = elf_section_data (p->sec)->sreloc;
2820 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
2821 }
65f38f15
AM		 2822 }
2823 }
2824
2825 local_got = elf_local_got_refcounts (ibfd);
2826 if (!local_got)
2827 continue;
2828
2829 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2830 locsymcount = symtab_hdr->sh_info;
2831 end_local_got = local_got + locsymcount;
2832 s = htab->sgot;
2833 srel = htab->srelgot;
2834 for (; local_got < end_local_got; ++local_got)
2835 {
2836 if (*local_got > 0)
5bd4f169 2837 {
65f38f15
AM		 2838 *local_got = s->_raw_size;
2839 s->_raw_size += 8;
2840 if (info->shared)
2841 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 2842 }
65f38f15
AM		 2843 else
2844 *local_got = (bfd_vma) -1;
2845 }
2846 }
2847
2848 /* Allocate global sym .plt and .got entries, and space for global
2849 sym dynamic relocs. */
2850 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2851
2852 /* We now have determined the sizes of the various dynamic sections.
2853 Allocate memory for them. */
2854 relocs = false;
2855 for (s = dynobj->sections; s != NULL; s = s->next)
2856 {
5d1634d7
AM		 2857 bfd_vma size;
2858
65f38f15
AM		 2859 if ((s->flags & SEC_LINKER_CREATED) == 0)
2860 continue;
2861
2862 if (s == htab->splt
2863 || s == htab->sgot
5d1634d7 2864 || s == htab->sstub
65f38f15
AM		 2865 || s == htab->sglink)
2866 {
2867 /* Strip this section if we don't need it; see the
2868 comment below. */
5bd4f169 2869 }
65f38f15 2870 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 2871 {
2872 if (s->_raw_size == 0)
2873 {
2874 /* If we don't need this section, strip it from the
2875 output file. This is mostly to handle .rela.bss and
2876 .rela.plt. We must create both sections in
2877 create_dynamic_sections, because they must be created
2878 before the linker maps input sections to output
2879 sections. The linker does that before
2880 adjust_dynamic_symbol is called, and it is that
2881 function which decides whether anything needs to go
2882 into these sections. */
5bd4f169
AM		 2883 }
2884 else
2885 {
65f38f15
AM		 2886 if (s != htab->srelplt)
2887 relocs = true;
5bd4f169
AM		 2888
2889 /* We use the reloc_count field as a counter if we need
2890 to copy relocs into the output file. */
2891 s->reloc_count = 0;
2892 }
2893 }
65f38f15 2894 else
5bd4f169
AM		 2895 {
2896 /* It's not one of our sections, so don't allocate space. */
2897 continue;
2898 }
2899
65f38f15 2900 if (s->_raw_size == 0)
5bd4f169
AM		 2901 {
2902 _bfd_strip_section_from_output (info, s);
2903 continue;
2904 }
2905
65f38f15
AM		 2906 /* Allocate memory for the section contents. We use bfd_zalloc
2907 here in case unused entries are not reclaimed before the
2908 section's contents are written out. This should not happen,
2909 but this way if it does, we get a R_PPC64_NONE reloc instead
2910 of garbage. */
5d1634d7
AM		 2911 size = s->_raw_size;
2912 if (s == htab->sstub)
2913 {
2914 /* .stub may grow. Allocate enough for the maximum growth. */
2915 size += (size + 65536 + 65535) / 65536 * 4;
2916 }
2917 s->contents = (bfd_byte *) bfd_zalloc (dynobj, size);
65f38f15 2918 if (s->contents == NULL)
5bd4f169
AM		 2919 return false;
2920 }
2921
2922 if (elf_hash_table (info)->dynamic_sections_created)
2923 {
2924 /* Add some entries to the .dynamic section. We fill in the
2925 values later, in ppc64_elf_finish_dynamic_sections, but we
2926 must add the entries now so that we get the correct size for
2927 the .dynamic section. The DT_DEBUG entry is filled in by the
2928 dynamic linker and used by the debugger. */
dc810e39
AM		 2929#define add_dynamic_entry(TAG, VAL) \
2930 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2931
2932 if (!info->shared)
5bd4f169 2933 {
dc810e39 2934 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 2935 return false;
2936 }
2937
65f38f15 2938 if (htab->splt->_raw_size != 0)
5bd4f169 2939 {
dc810e39
AM		 2940 if (!add_dynamic_entry (DT_PLTGOT, 0)
2941 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2942 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 2943 || !add_dynamic_entry (DT_JMPREL, 0)
2944 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5bd4f169
AM		 2945 return false;
2946 }
2947
2948 if (relocs)
2949 {
dc810e39
AM		 2950 if (!add_dynamic_entry (DT_RELA, 0)
2951 || !add_dynamic_entry (DT_RELASZ, 0)
2952 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 2953 return false;
5bd4f169 2954
65f38f15
AM		 2955 /* If any dynamic relocs apply to a read-only section,
2956 then we need a DT_TEXTREL entry. */
2957 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
5bd4f169 2958
65f38f15 2959 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 2960 {
65f38f15
AM		 2961 if (!add_dynamic_entry (DT_TEXTREL, 0))
2962 return false;
5bd4f169 2963 }
5bd4f169 2964 }
5bd4f169 2965 }
65f38f15 2966#undef add_dynamic_entry
5bd4f169
AM		 2967
2968 return true;
2969}
2970
2971/* Called after we have seen all the input files/sections, but before
2972 final symbol resolution and section placement has been determined.
2973
2974 We use this hook to provide a value for TOCstart, which we store in
5d1634d7 2975 the output bfd elf_gp. */
5bd4f169 2976
5d1634d7
AM		 2977boolean
2978ppc64_elf_set_toc (obfd, info)
2979 bfd *obfd;
5bd4f169
AM		 2980 struct bfd_link_info *info;
2981{
5d1634d7 2982 if (!info->relocateable)
5bd4f169
AM		 2983 {
2984 asection *s;
2985 bfd_vma TOCstart;
2986
5d1634d7 2987 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
5bd4f169 2988 order. The TOC starts where the first of these sections starts. */
5d1634d7 2989 s = bfd_get_section_by_name (obfd, ".got");
5bd4f169 2990 if (s == NULL)
5d1634d7 2991 s = bfd_get_section_by_name (obfd, ".toc");
5bd4f169 2992 if (s == NULL)
5d1634d7 2993 s = bfd_get_section_by_name (obfd, ".tocbss");
5bd4f169 2994 if (s == NULL)
5d1634d7 2995 s = bfd_get_section_by_name (obfd, ".plt");
5bd4f169
AM		 2996 if (s == NULL)
2997 {
2998 /* This may happen for
2999 o references to TOC base (SYM@toc / TOC[tc0]) without a
3000 .toc directive
3001 o bad linker script
3002 o --gc-sections and empty TOC sections
3003
3004 FIXME: Warn user? */
3005
3006 /* Look for a likely section. We probably won't even be
3007 using TOCstart. */
5d1634d7 3008 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3009 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
3010 == (SEC_ALLOC | SEC_SMALL_DATA))
3011 break;
3012 if (s == NULL)
5d1634d7 3013 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3014 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
3015 == (SEC_ALLOC | SEC_SMALL_DATA))
3016 break;
3017 if (s == NULL)
5d1634d7 3018 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3019 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
3020 break;
3021 if (s == NULL)
5d1634d7 3022 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3023 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
3024 break;
3025 }
3026
3027 TOCstart = 0;
3028 if (s != NULL)
3029 TOCstart = s->output_section->vma + s->output_offset;
3030
5d1634d7
AM		 3031 elf_gp (obfd) = TOCstart;
3032 }
3033 return true;
3034}
3035
3036/* PowerPC64 .plt entries are 24 bytes long, which doesn't divide
3037 evenly into 64k. Sometimes with a large enough .plt, we'll need to
3038 use offsets differing in the high 16 bits when accessing a .plt
3039 entry from a .plt call stub. This function adjusts the size of
3040 .stub to accommodate the extra stub instruction needed in such
3041 cases. */
3042
3043boolean
3044ppc64_elf_size_stubs (obfd, info, changed)
3045 bfd *obfd;
3046 struct bfd_link_info *info;
3047 int *changed;
3048{
3049 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3050 bfd_vma plt_offset, next_64k;
3051 long base, num, extra;
3052
3053 /* .plt and .stub should be both present, or both absent. */
3054 if ((htab->splt == NULL || htab->splt->_raw_size == 0)
3055 != (htab->sstub == NULL || htab->sstub->_raw_size == 0))
3056 abort ();
3057
3058 /* If no .plt, then nothing to do. */
3059 if (htab->splt == NULL || htab->splt->_raw_size == 0)
3060 return true;
3061
3062 plt_offset = (htab->splt->output_section->vma
3063 + htab->splt->output_offset
3064 - elf_gp (obfd));
3065 next_64k = (plt_offset + 65535) & -65536;
3066
3067 /* If the .plt doesn't have any entries crossing a 64k boundary,
3068 then there is no need for bigger stubs. */
3069 if (next_64k <= plt_offset + htab->splt->_raw_size)
3070 return true;
3071
3072 /* OK, so we have at least one transition. Since .plt entries are
3073 24 bytes long, we'll strike it lucky every 3*64k, with the 64k
3074 boundary between .plt entries. */
3075 base = next_64k / 65536;
3076 num = (plt_offset + htab->splt->_raw_size - next_64k) / 65536;
3077 extra = (base % 3 + num + 1) * 2 / 3;
3078
3079 /* Allow one extra instruction for each EXTRA. The change in .stub
3080 may change the location of .toc and .plt. .toc and .plt ought to
3081 move as a group, but someone might be playing with eg. .plt
3082 alignment, so don't allow .stub size to decrease. */
3083 if (htab->sstub->_cooked_size < htab->sstub->_raw_size + extra * 4)
3084 {
3085 htab->sstub->_cooked_size = htab->sstub->_raw_size + extra * 4;
3086 *changed = true;
3087 }
3088 return true;
3089}
3090
3091/* Build a .plt call stub. */
3092
3093static bfd_byte *
3094build_plt_stub (obfd, p, offset, glink)
3095 bfd *obfd;
3096 bfd_byte *p;
3097 int offset;
3098 int glink;
3099{
3100#define PPC_LO(v) ((v) & 0xffff)
3101#define PPC_HI(v) (((v) >> 16) & 0xffff)
3102#define PPC_HA(v) PPC_HI ((v) + 0x8000)
3103
3104 if (glink)
3105 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
3106 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
3107 if (!glink)
3108 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
3109 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3110 if (PPC_HA (offset + 8) != PPC_HA (offset))
3111 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3112 offset += 8;
3113 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
3114 if (PPC_HA (offset + 8) != PPC_HA (offset))
3115 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3116 offset += 8;
3117 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
3118 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3119 bfd_put_32 (obfd, BCTR, p), p += 4;
3120 return p;
3121}
3122
3123/* Build the stubs for one function call. */
3124
3125static boolean
3126build_one_stub (h, inf)
3127 struct elf_link_hash_entry *h;
3128 PTR inf;
3129{
3130 struct bfd_link_info *info;
3131 struct ppc_link_hash_table *htab;
3132
3133 if (h->root.type == bfd_link_hash_indirect
3134 || h->root.type == bfd_link_hash_warning)
3135 return true;
3136
3137 info = (struct bfd_link_info *) inf;
3138 htab = ppc_hash_table (info);
3139
3140 if (htab->elf.dynamic_sections_created
3141 && h->plt.offset != (bfd_vma) -1)
3142 {
3143 asection *s;
3144 bfd_vma plt_r2;
3145 bfd_byte *p;
3146 unsigned int indx;
3147
3148 /* Point the function at the linkage stub. This works because
3149 the only references to the function code sym are calls.
3150 Function pointer comparisons use the function descriptor. */
3151 s = htab->sstub;
3152 h->root.type = bfd_link_hash_defined;
3153 h->root.u.def.section = s;
3154 h->root.u.def.value = s->_cooked_size;
3155
3156 /* Build the .plt call stub. */
3157 plt_r2 = (htab->splt->output_section->vma
3158 + htab->splt->output_offset
3159 + h->plt.offset
3160 - elf_gp (htab->splt->output_section->owner)
3161 - TOC_BASE_OFF);
3162
3163 if (plt_r2 + 0x80000000 > 0xffffffff)
3164 {
3165 (*_bfd_error_handler)
3166 (_("linkage table overflow against `%s'"),
3167 h->root.root.string);
3168 bfd_set_error (bfd_error_bad_value);
3169 htab->plt_overflow = true;
3170 return false;
3171 }
3172 p = s->contents + s->_cooked_size;
3173 p = build_plt_stub (s->owner, p, (int) plt_r2, 0);
3174 s->_cooked_size = p - s->contents;
3175
3176 /* Build the .glink lazy link call stub. */
3177 s = htab->sglink;
3178 p = s->contents + s->_cooked_size;
3179 indx = s->reloc_count;
3180 if (indx < 0x8000)
3181 {
3182 bfd_put_32 (s->owner, LI_R0_0 | indx, p);
3183 p += 4;
3184 }
3185 else
3186 {
3187 bfd_put_32 (s->owner, LIS_R0_0 | PPC_HI (indx), p);
3188 p += 4;
3189 bfd_put_32 (s->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
3190 p += 4;
3191 }
3192 bfd_put_32 (s->owner, B_DOT | ((s->contents - p) & 0x3fffffc), p);
3193 p += 4;
3194 s->_cooked_size = p - s->contents;
3195 s->reloc_count += 1;
5bd4f169 3196 }
5d1634d7
AM		 3197 return true;
3198}
5bd4f169 3199
5d1634d7
AM		 3200boolean
3201ppc64_elf_build_stubs (obfd, info)
3202 bfd *obfd;
3203 struct bfd_link_info *info;
3204{
3205 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3206 bfd_vma old_stub_size;
3207 bfd_vma plt_r2;
3208 bfd_byte *p;
3209
3210 /* If no .plt stubs, then nothing to do. */
3211 if (htab->sstub == NULL || htab->sstub->_raw_size == 0)
3212 return true;
3213
3214 old_stub_size = htab->sstub->_cooked_size;
3215 htab->sstub->_cooked_size = 0;
3216
3217 /* Build the .glink plt call stub. */
3218 plt_r2 = (htab->splt->output_section->vma
3219 + htab->splt->output_offset
3220 - elf_gp (obfd)
3221 - TOC_BASE_OFF);
3222 p = htab->sglink->contents;
3223 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
3224 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
3225 {
3226 bfd_put_32 (htab->sglink->owner, NOP, p);
3227 p += 4;
3228 }
3229 htab->sglink->_cooked_size = p - htab->sglink->contents;
3230
3231 /* Use reloc_count to count entries. */
3232 htab->sglink->reloc_count = 0;
3233
3234 elf_link_hash_traverse (&htab->elf, build_one_stub, (PTR) info);
3235 htab->sglink->reloc_count = 0;
3236
3237 if (htab->plt_overflow)
3238 return false;
3239
3240 if (old_stub_size != htab->sstub->_cooked_size
3241 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
3242 {
3243 (*_bfd_error_handler)
3244 (_("stub section size doesn't match calculated size"));
3245 bfd_set_error (bfd_error_bad_value);
3246 return false;
3247 }
3248 return true;
5bd4f169
AM		 3249}
3250
3251/* Set up any other section flags and such that may be necessary. */
3252
3253static boolean
3254ppc64_elf_fake_sections (abfd, shdr, asect)
3255 bfd *abfd ATTRIBUTE_UNUSED;
3256 Elf64_Internal_Shdr *shdr;
3257 asection *asect;
3258{
3259 if ((asect->flags & SEC_EXCLUDE) != 0)
3260 shdr->sh_flags |= SHF_EXCLUDE;
3261
3262 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
3263 shdr->sh_type = SHT_ORDERED;
3264
3265 return true;
3266}
3267
3268/* The RELOCATE_SECTION function is called by the ELF backend linker
3269 to handle the relocations for a section.
3270
3271 The relocs are always passed as Rela structures; if the section
3272 actually uses Rel structures, the r_addend field will always be
3273 zero.
3274
3275 This function is responsible for adjust the section contents as
3276 necessary, and (if using Rela relocs and generating a
3277 relocateable output file) adjusting the reloc addend as
3278 necessary.
3279
3280 This function does not have to worry about setting the reloc
3281 address or the reloc symbol index.
3282
3283 LOCAL_SYMS is a pointer to the swapped in local symbols.
3284
3285 LOCAL_SECTIONS is an array giving the section in the input file
3286 corresponding to the st_shndx field of each local symbol.
3287
3288 The global hash table entry for the global symbols can be found
3289 via elf_sym_hashes (input_bfd).
3290
3291 When generating relocateable output, this function must handle
3292 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3293 going to be the section symbol corresponding to the output
3294 section, which means that the addend must be adjusted
3295 accordingly. */
3296
3297static boolean
3298ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
3299 contents, relocs, local_syms, local_sections)
3300 bfd *output_bfd;
3301 struct bfd_link_info *info;
3302 bfd *input_bfd;
3303 asection *input_section;
3304 bfd_byte *contents;
3305 Elf_Internal_Rela *relocs;
3306 Elf_Internal_Sym *local_syms;
3307 asection **local_sections;
3308{
65f38f15 3309 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3310 Elf_Internal_Shdr *symtab_hdr;
3311 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 3312 Elf_Internal_Rela *rel;
3313 Elf_Internal_Rela *relend;
5bd4f169
AM		 3314 bfd_vma *local_got_offsets;
3315 bfd_vma TOCstart;
3316 boolean ret = true;
5bd4f169 3317
65f38f15 3318 /* Initialize howto table if needed. */
5bd4f169 3319 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 3320 ppc_howto_init ();
3321
65f38f15 3322 htab = ppc_hash_table (info);
5bd4f169 3323 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 3324 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 3325 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3326 sym_hashes = elf_sym_hashes (input_bfd);
65f38f15 3327
5bd4f169
AM		 3328 rel = relocs;
3329 relend = relocs + input_section->reloc_count;
3330 for (; rel < relend; rel++)
3331 {
3332 enum elf_ppc_reloc_type r_type;
3333 bfd_vma offset;
3334 bfd_vma addend;
3335 bfd_reloc_status_type r;
3336 Elf_Internal_Sym *sym;
3337 asection *sec;
3338 struct elf_link_hash_entry *h;
3339 const char *sym_name;
5bd4f169
AM		 3340 unsigned long r_symndx;
3341 bfd_vma relocation;
65f38f15 3342 boolean unresolved_reloc;
dc810e39 3343 long insn;
5bd4f169
AM		 3344
3345 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169
AM		 3346 r_symndx = ELF64_R_SYM (rel->r_info);
3347
3348 if (info->relocateable)
3349 {
3350 /* This is a relocatable link. We don't have to change
3351 anything, unless the reloc is against a section symbol,
3352 in which case we have to adjust according to where the
3353 section symbol winds up in the output section. */
3354 if (r_symndx < symtab_hdr->sh_info)
3355 {
3356 sym = local_syms + r_symndx;
3357 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3358 {
3359 sec = local_sections[r_symndx];
65f38f15 3360 rel->r_addend += sec->output_offset + sym->st_value;
5bd4f169
AM		 3361 }
3362 }
5bd4f169
AM		 3363 continue;
3364 }
3365
3366 /* This is a final link. */
3367
65f38f15
AM		 3368 offset = rel->r_offset;
3369 addend = rel->r_addend;
3370 r = bfd_reloc_other;
3371 sym = (Elf_Internal_Sym *) 0;
3372 sec = (asection *) 0;
3373 h = (struct elf_link_hash_entry *) 0;
3374 sym_name = (const char *) 0;
3375 unresolved_reloc = false;
3376
5bd4f169
AM		 3377 if (r_type == R_PPC64_TOC)
3378 {
3379 /* Relocation value is TOC base. Symbol is ignored. */
3380 relocation = TOCstart + TOC_BASE_OFF;
3381 }
3382 else if (r_symndx < symtab_hdr->sh_info)
3383 {
3384 /* It's a local symbol. */
3385 sym = local_syms + r_symndx;
3386 sec = local_sections[r_symndx];
3387 sym_name = "<local symbol>";
3388
f8df10f4
JJ		 3389 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
3390 addend = rel->r_addend;
5bd4f169
AM		 3391 }
3392 else
3393 {
3394 /* It's a global symbol. */
3395 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3396 while (h->root.type == bfd_link_hash_indirect
3397 || h->root.type == bfd_link_hash_warning)
3398 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3399 sym_name = h->root.root.string;
65f38f15 3400 relocation = 0;
5bd4f169
AM		 3401 if (h->root.type == bfd_link_hash_defined
3402 || h->root.type == bfd_link_hash_defweak)
3403 {
3404 sec = h->root.u.def.section;
65f38f15
AM		 3405 if (sec->output_section == NULL)
3406 /* Set a flag that will be cleared later if we find a
3407 relocation value for this symbol. output_section
3408 is typically NULL for symbols satisfied by a shared
3409 library. */
3410 unresolved_reloc = true;
5bd4f169
AM		 3411 else
3412 relocation = (h->root.u.def.value
3413 + sec->output_section->vma
3414 + sec->output_offset);
3415 }
3416 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 3417 ;
671bae9c 3418 else if (info->shared
65f38f15
AM		 3419 && (!info->symbolic || info->allow_shlib_undefined)
3420 && !info->no_undefined
3421 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3422 ;
5bd4f169
AM		 3423 else
3424 {
3425 if (! ((*info->callbacks->undefined_symbol)
3426 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 3427 offset, (!info->shared
3428 || info->no_undefined
3429 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169
AM		 3430 return false;
3431 relocation = 0;
3432 }
3433 }
3434
65f38f15 3435 /* First handle relocations that tweak non-addend part of insn. */
86c76c7b 3436 insn = 0;
65f38f15 3437 switch (r_type)
5bd4f169
AM		 3438 {
3439 default:
65f38f15 3440 break;
5bd4f169 3441
65f38f15
AM		 3442 /* Branch taken prediction relocations. */
3443 case R_PPC64_ADDR14_BRTAKEN:
3444 case R_PPC64_REL14_BRTAKEN:
86c76c7b
AM		 3445 insn = 0x01 << 21; /* Set 't' bit, lowest bit of BO field. */
3446 /* Fall thru. */
65f38f15 3447
86c76c7b 3448 /* Branch not taken prediction relocations. */
65f38f15
AM		 3449 case R_PPC64_ADDR14_BRNTAKEN:
3450 case R_PPC64_REL14_BRNTAKEN:
86c76c7b
AM		 3451 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
3452 /* Set 'a' bit. This is 0b00010 in BO field for branch on CR(BI)
3453 insns (BO == 001at or 011at), and 0b01000 for branch on CTR
3454 insns (BO == 1a00t or 1a01t). */
3455 if ((insn & (0x14 << 21)) == (0x04 << 21))
3456 insn |= 0x02 << 21;
3457 else if ((insn & (0x14 << 21)) == (0x10 << 21))
3458 insn |= 0x08 << 21;
65f38f15 3459 else
86c76c7b
AM		 3460 break;
3461
65f38f15
AM		 3462 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3463 break;
5bd4f169 3464
65f38f15
AM		 3465 case R_PPC64_REL24:
3466 case R_PPC64_ADDR24:
5bd4f169 3467 /* An ADDR24 or REL24 branching to a linkage function may be
65f38f15 3468 followed by a nop that we have to replace with a ld in
5bd4f169
AM		 3469 order to restore the TOC base pointer. Only calls to
3470 shared objects need to alter the TOC base. These are
3471 recognized by their need for a PLT entry. */
3472 if (h != NULL
3473 && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
3474 /* Make sure that there really is an instruction after
3475 the branch that we can decode. */
65f38f15 3476 && offset + 8 <= input_section->_cooked_size)
5bd4f169
AM		 3477 {
3478 bfd_byte *pnext;
5bd4f169 3479
65f38f15 3480 pnext = contents + offset + 4;
5bd4f169
AM		 3481 insn = bfd_get_32 (input_bfd, pnext);
3482
3483 if (insn == 0x60000000 /* nop (ori r0,r0,0) */
3484 || insn == 0x4def7b82 /* cror 15,15,15 */
dc810e39 3485 || insn == 0x4ffffb82) /* cror 31,31,31 */
5bd4f169 3486 {
dc810e39
AM		 3487 bfd_put_32 (input_bfd,
3488 (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
3489 pnext);
5bd4f169
AM		 3490 }
3491 }
65f38f15
AM		 3492 break;
3493 }
5bd4f169 3494
65f38f15
AM		 3495 /* Set `addend'. */
3496 switch (r_type)
3497 {
3498 default:
3499 (*_bfd_error_handler)
3500 (_("%s: unknown relocation type %d for symbol %s"),
3501 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 3502
65f38f15
AM		 3503 bfd_set_error (bfd_error_bad_value);
3504 ret = false;
3505 continue;
5bd4f169 3506
65f38f15
AM		 3507 case R_PPC64_NONE:
3508 case R_PPC_GNU_VTINHERIT:
3509 case R_PPC_GNU_VTENTRY:
3510 continue;
5bd4f169
AM		 3511
3512 /* GOT16 relocations. Like an ADDR16 using the symbol's
3513 address in the GOT as relocation value instead of the
3514 symbols value itself. Also, create a GOT entry for the
3515 symbol and put the symbol value there. */
65f38f15
AM		 3516 case R_PPC64_GOT16:
3517 case R_PPC64_GOT16_LO:
3518 case R_PPC64_GOT16_HI:
3519 case R_PPC64_GOT16_HA:
3520 case R_PPC64_GOT16_DS:
3521 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 3522 {
3523 /* Relocation is to the entry for this symbol in the global
3524 offset table. */
3525 bfd_vma off;
65f38f15
AM		 3526
3527 if (htab->sgot == NULL)
3528 abort ();
5bd4f169
AM		 3529
3530 if (h != NULL)
3531 {
65f38f15 3532 boolean dyn;
5bd4f169 3533
65f38f15
AM		 3534 off = h->got.offset;
3535 dyn = htab->elf.dynamic_sections_created;
3536 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 3537 || (info->shared
65f38f15
AM		 3538 && (info->symbolic
3539 || h->dynindx == -1
3540 || (h->elf_link_hash_flags
3541 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 3542 && (h->elf_link_hash_flags
3543 & ELF_LINK_HASH_DEF_REGULAR)))
3544 {
3545 /* This is actually a static link, or it is a
3546 -Bsymbolic link and the symbol is defined
65f38f15
AM		 3547 locally, or the symbol was forced to be local
3548 because of a version file. We must initialize
3549 this entry in the global offset table. Since the
3550 offset must always be a multiple of 8, we use the
3551 least significant bit to record whether we have
5bd4f169
AM		 3552 initialized it already.
3553
65f38f15 3554 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 3555 relocation entry to initialize the value. This
3556 is done in the finish_dynamic_symbol routine. */
3557 if ((off & 1) != 0)
3558 off &= ~1;
3559 else
3560 {
3561 bfd_put_64 (output_bfd, relocation,
65f38f15 3562 htab->sgot->contents + off);
5bd4f169
AM		 3563 h->got.offset |= 1;
3564 }
3565 }
65f38f15
AM		 3566 else
3567 unresolved_reloc = false;
5bd4f169
AM		 3568 }
3569 else
3570 {
65f38f15
AM		 3571 if (local_got_offsets == NULL)
3572 abort ();
5bd4f169
AM		 3573
3574 off = local_got_offsets[r_symndx];
3575
65f38f15 3576 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 3577 the least significant bit to record whether we have
3578 already processed this entry. */
3579 if ((off & 1) != 0)
3580 off &= ~1;
3581 else
3582 {
65f38f15
AM		 3583 bfd_put_64 (output_bfd, relocation,
3584 htab->sgot->contents + off);
5bd4f169
AM		 3585
3586 if (info->shared)
3587 {
5bd4f169 3588 Elf_Internal_Rela outrel;
65f38f15 3589 Elf64_External_Rela *loc;
5bd4f169
AM		 3590
3591 /* We need to generate a R_PPC64_RELATIVE reloc
3592 for the dynamic linker. */
65f38f15
AM		 3593 outrel.r_offset = (htab->sgot->output_section->vma
3594 + htab->sgot->output_offset
5bd4f169
AM		 3595 + off);
3596 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3597 outrel.r_addend = relocation;
65f38f15
AM		 3598 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3599 loc += htab->srelgot->reloc_count++;
3600 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 3601 }
3602
3603 local_got_offsets[r_symndx] |= 1;
3604 }
3605 }
3606
65f38f15
AM		 3607 if (off >= (bfd_vma) -2)
3608 abort ();
3609
3610 relocation = htab->sgot->output_offset + off;
3611
5bd4f169
AM		 3612 /* TOC base (r2) is TOC start plus 0x8000. */
3613 addend -= TOC_BASE_OFF;
5bd4f169 3614 }
65f38f15
AM		 3615 break;
3616
3617 case R_PPC64_PLT16_HA:
3618 case R_PPC64_PLT16_HI:
3619 case R_PPC64_PLT16_LO:
3620 case R_PPC64_PLT32:
3621 case R_PPC64_PLT64:
3622 /* Relocation is to the entry for this symbol in the
3623 procedure linkage table. */
3624
3625 /* Resolve a PLT reloc against a local symbol directly,
3626 without using the procedure linkage table. */
3627 if (h == NULL)
3628 break;
3629
3630 if (h->plt.offset == (bfd_vma) -1
3631 || htab->splt == NULL)
3632 {
3633 /* We didn't make a PLT entry for this symbol. This
3634 happens when statically linking PIC code, or when
3635 using -Bsymbolic. */
3636 break;
3637 }
3638
3639 relocation = (htab->splt->output_section->vma
3640 + htab->splt->output_offset
3641 + h->plt.offset);
3642 unresolved_reloc = false;
3643 break;
5bd4f169
AM		 3644
3645 /* TOC16 relocs. We want the offset relative to the TOC base,
3646 which is the address of the start of the TOC plus 0x8000.
3647 The TOC consists of sections .got, .toc, .tocbss, and .plt,
3648 in this order. */
65f38f15
AM		 3649 case R_PPC64_TOC16:
3650 case R_PPC64_TOC16_LO:
3651 case R_PPC64_TOC16_HI:
3652 case R_PPC64_TOC16_DS:
3653 case R_PPC64_TOC16_LO_DS:
3654 case R_PPC64_TOC16_HA:
5bd4f169 3655 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 3656 break;
3657
3658 /* Relocate against the beginning of the section. */
65f38f15
AM		 3659 case R_PPC64_SECTOFF:
3660 case R_PPC64_SECTOFF_LO:
3661 case R_PPC64_SECTOFF_HI:
3662 case R_PPC64_SECTOFF_DS:
3663 case R_PPC64_SECTOFF_LO_DS:
3664 case R_PPC64_SECTOFF_HA:
3665 if (sec != (asection *) 0)
3666 addend -= sec->output_section->vma;
5bd4f169
AM		 3667 break;
3668
5d1634d7
AM		 3669 case R_PPC64_REL24:
3670 break;
3671
65f38f15
AM		 3672 /* Relocations that may need to be propagated if this is a
3673 dynamic object. */
3674 case R_PPC64_REL14:
3675 case R_PPC64_REL14_BRNTAKEN:
3676 case R_PPC64_REL14_BRTAKEN:
65f38f15
AM		 3677 case R_PPC64_REL32:
3678 case R_PPC64_REL64:
3679 case R_PPC64_ADDR14:
3680 case R_PPC64_ADDR14_BRNTAKEN:
3681 case R_PPC64_ADDR14_BRTAKEN:
3682 case R_PPC64_ADDR16:
3683 case R_PPC64_ADDR16_DS:
3684 case R_PPC64_ADDR16_HA:
3685 case R_PPC64_ADDR16_HI:
3686 case R_PPC64_ADDR16_HIGHER:
3687 case R_PPC64_ADDR16_HIGHERA:
3688 case R_PPC64_ADDR16_HIGHEST:
3689 case R_PPC64_ADDR16_HIGHESTA:
3690 case R_PPC64_ADDR16_LO:
3691 case R_PPC64_ADDR16_LO_DS:
3692 case R_PPC64_ADDR24:
3693 case R_PPC64_ADDR30:
3694 case R_PPC64_ADDR32:
3695 case R_PPC64_ADDR64:
3696 case R_PPC64_UADDR16:
3697 case R_PPC64_UADDR32:
3698 case R_PPC64_UADDR64:
ec338859
AM		 3699 /* r_symndx will be zero only for relocs against symbols
3700 from removed linkonce sections, or sections discarded by
3701 a linker script. */
5d1634d7
AM		 3702 if (r_symndx == 0)
3703 break;
3704 /* Fall thru. */
3705
3706 case R_PPC64_TOC:
3707 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 3708 break;
3709
65f38f15 3710 if ((info->shared
65f38f15
AM		 3711 && (IS_ABSOLUTE_RELOC (r_type)
3712 || (h != NULL
3713 && h->dynindx != -1
3714 && (! info->symbolic
3715 || (h->elf_link_hash_flags
3716 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3717 || (!info->shared
65f38f15
AM		 3718 && h != NULL
3719 && h->dynindx != -1
3720 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3721 && (((h->elf_link_hash_flags
3722 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3723 && (h->elf_link_hash_flags
3724 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3725 || h->root.type == bfd_link_hash_undefweak
3726 || h->root.type == bfd_link_hash_undefined)))
3727 {
3728 Elf_Internal_Rela outrel;
3729 boolean skip, relocate;
3730 asection *sreloc;
3731 Elf64_External_Rela *loc;
3732
5d1634d7
AM		 3733#if 0
3734 if (strcmp (bfd_get_section_name (output_bfd, input_section),
3735 ".opd") == 0)
3736 break;
3737#endif
3738
65f38f15
AM		 3739 /* When generating a dynamic object, these relocations
3740 are copied into the output file to be resolved at run
3741 time. */
3742
3743 skip = false;
3744
c629eae0
JJ		 3745 outrel.r_offset =
3746 _bfd_elf_section_offset (output_bfd, info, input_section,
3747 rel->r_offset);
3748 if (outrel.r_offset == (bfd_vma) -1)
3749 skip = true;
65f38f15
AM		 3750
3751 outrel.r_offset += (input_section->output_section->vma
3752 + input_section->output_offset);
3753 outrel.r_addend = addend;
3754
3755 if (skip)
3756 {
3757 relocate = false;
3758 memset (&outrel, 0, sizeof outrel);
3759 }
3760 else if (h != NULL
3761 && h->dynindx != -1
3762 && (!IS_ABSOLUTE_RELOC (r_type)
3763 || !info->shared
3764 || !info->symbolic
3765 || (h->elf_link_hash_flags
3766 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3767 {
3768 relocate = false;
3769 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
3770 }
3771 else
3772 {
3773 /* This symbol is local, or marked to become local. */
3774 outrel.r_addend += relocation;
3775 relocate = true;
3776 if (r_type == R_PPC64_ADDR64)
3777 {
3778 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3779 }
3780 else
3781 {
3782 long indx = 0;
3783
3784 if (r_type == R_PPC64_TOC || bfd_is_abs_section (sec))
3785 ;
3786 else if (sec == NULL || sec->owner == NULL)
3787 {
3788 bfd_set_error (bfd_error_bad_value);
3789 return false;
3790 }
3791 else
3792 {
3793 asection *osec;
3794
3795 osec = sec->output_section;
3796 indx = elf_section_data (osec)->dynindx;
3797
3798 /* We are turning this relocation into one
3799 against a section symbol, so subtract out
3800 the output section's address but not the
3801 offset of the input section in the output
3802 section. */
3803 outrel.r_addend -= osec->vma;
3804 }
3805
3806 outrel.r_info = ELF64_R_INFO (indx, r_type);
3807 }
3808 }
3809
3810 sreloc = elf_section_data (input_section)->sreloc;
3811 if (sreloc == NULL)
3812 abort ();
3813
3814 loc = (Elf64_External_Rela *) sreloc->contents;
3815 loc += sreloc->reloc_count++;
3816 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
3817
3818 /* If this reloc is against an external symbol, it will
3819 be computed at runtime, so there's no need to do
3820 anything now. */
3821 if (! relocate)
3822 continue;
3823 }
5bd4f169
AM		 3824 break;
3825
65f38f15
AM		 3826 case R_PPC64_COPY:
3827 case R_PPC64_GLOB_DAT:
3828 case R_PPC64_JMP_SLOT:
3829 case R_PPC64_RELATIVE:
3830 /* We shouldn't ever see these dynamic relocs in relocatable
3831 files. */
3832 /* Fall thru */
3833
3834 case R_PPC64_PLTGOT16:
3835 case R_PPC64_PLTGOT16_DS:
3836 case R_PPC64_PLTGOT16_HA:
3837 case R_PPC64_PLTGOT16_HI:
3838 case R_PPC64_PLTGOT16_LO:
3839 case R_PPC64_PLTGOT16_LO_DS:
3840 case R_PPC64_PLTREL32:
3841 case R_PPC64_PLTREL64:
3842 /* These ones haven't been implemented yet. */
3843
3844 (*_bfd_error_handler)
3845 (_("%s: Relocation %s is not supported for symbol %s."),
3846 bfd_archive_filename (input_bfd),
3847 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 3848
3849 bfd_set_error (bfd_error_invalid_operation);
3850 ret = false;
3851 continue;
65f38f15 3852 }
5bd4f169 3853
65f38f15
AM		 3854 /* Do any further special processing. */
3855 switch (r_type)
3856 {
3857 default:
3858 break;
3859
3860 case R_PPC64_ADDR16_HA:
3861 case R_PPC64_ADDR16_HIGHERA:
3862 case R_PPC64_ADDR16_HIGHESTA:
3863 case R_PPC64_PLT16_HA:
3864 case R_PPC64_TOC16_HA:
3865 case R_PPC64_SECTOFF_HA:
3866 /* It's just possible that this symbol is a weak symbol
3867 that's not actually defined anywhere. In that case,
3868 'sec' would be NULL, and we should leave the symbol
3869 alone (it will be set to zero elsewhere in the link). */
3870 if (sec != NULL)
3871 /* Add 0x10000 if sign bit in 0:15 is set. */
3872 addend += ((relocation + addend) & 0x8000) << 1;
3873 break;
3874
3875 case R_PPC64_ADDR16_DS:
3876 case R_PPC64_ADDR16_LO_DS:
3877 case R_PPC64_GOT16_DS:
3878 case R_PPC64_GOT16_LO_DS:
3879 case R_PPC64_PLT16_LO_DS:
3880 case R_PPC64_SECTOFF_DS:
3881 case R_PPC64_SECTOFF_LO_DS:
3882 case R_PPC64_TOC16_DS:
3883 case R_PPC64_TOC16_LO_DS:
3884 case R_PPC64_PLTGOT16_DS:
3885 case R_PPC64_PLTGOT16_LO_DS:
3886 if (((relocation + addend) & 3) != 0)
3887 {
3888 (*_bfd_error_handler)
3889 (_("%s: error: relocation %s not a multiple of 4"),
3890 bfd_archive_filename (input_bfd),
3891 ppc64_elf_howto_table[(int) r_type]->name);
3892 bfd_set_error (bfd_error_bad_value);
3893 ret = false;
3894 continue;
3895 }
3896 break;
5bd4f169
AM		 3897 }
3898
65f38f15
AM		 3899 /* FIXME: Why do we allow debugging sections to escape this error?
3900 More importantly, why do we not emit dynamic relocs above in
3901 debugging sections (which are ! SEC_ALLOC)? If we had
3902 emitted the dynamic reloc, we could remove the fudge here. */
3903 if (unresolved_reloc
3904 && !(info->shared
3905 && (input_section->flags & SEC_DEBUGGING) != 0
3906 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3907 (*_bfd_error_handler)
3908 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
3909 bfd_archive_filename (input_bfd),
3910 bfd_get_section_name (input_bfd, input_section),
3911 (long) rel->r_offset,
3912 h->root.root.string);
5bd4f169 3913
65f38f15 3914 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 3915 input_bfd,
3916 input_section,
3917 contents,
3918 offset,
3919 relocation,
3920 addend);
3921
3922 if (r == bfd_reloc_ok)
3923 ;
3924 else if (r == bfd_reloc_overflow)
3925 {
3926 const char *name;
3927
3928 if (h != NULL)
3929 {
3930 if (h->root.type == bfd_link_hash_undefweak
65f38f15 3931 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 3932 {
3933 /* Assume this is a call protected by other code that
3934 detects the symbol is undefined. If this is the case,
3935 we can safely ignore the overflow. If not, the
3936 program is hosed anyway, and a little warning isn't
3937 going to help. */
3938
3939 continue;
3940 }
3941
3942 name = h->root.root.string;
3943 }
3944 else
3945 {
3946 name = bfd_elf_string_from_elf_section (input_bfd,
3947 symtab_hdr->sh_link,
3948 sym->st_name);
3949 if (name == NULL)
3950 continue;
3951 if (*name == '\0')
3952 name = bfd_section_name (input_bfd, sec);
3953 }
3954
65f38f15
AM		 3955 if (! ((*info->callbacks->reloc_overflow)
3956 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
3957 (bfd_vma) 0, input_bfd, input_section, offset)))
5bd4f169
AM		 3958 return false;
3959 }
3960 else
3961 ret = false;
3962 }
3963
5bd4f169
AM		 3964 return ret;
3965}
3966
3967/* Finish up dynamic symbol handling. We set the contents of various
3968 dynamic sections here. */
3969
3970static boolean
3971ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
3972 bfd *output_bfd;
3973 struct bfd_link_info *info;
3974 struct elf_link_hash_entry *h;
3975 Elf_Internal_Sym *sym;
3976{
65f38f15 3977 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3978 bfd *dynobj;
3979
65f38f15
AM		 3980 htab = ppc_hash_table (info);
3981 dynobj = htab->elf.dynobj;
5bd4f169
AM		 3982
3983 if (h->plt.offset != (bfd_vma) -1)
3984 {
5bd4f169 3985 struct elf_link_hash_entry *funcdesc_h;
65f38f15
AM		 3986 Elf_Internal_Rela rela;
3987 Elf64_External_Rela *loc;
5bd4f169
AM		 3988
3989 /* This symbol has an entry in the procedure linkage table. Set
3990 it up. */
3991
5d1634d7 3992 if (htab->splt == NULL
65f38f15
AM		 3993 || htab->srelplt == NULL
3994 || htab->sglink == NULL
3995 || h->root.root.string[0] != '.'
3996 || h->root.root.string[1] == '\0')
3997 abort ();
3998
3999 /* Find its corresponding function descriptor.
5d1634d7 4000 ppc64_elf_adjust_dynamic_symbol has already set it up for us. */
5bd4f169 4001
65f38f15
AM		 4002 funcdesc_h = elf_link_hash_lookup (elf_hash_table (info),
4003 h->root.root.string + 1,
4004 false, false, false);
4005
4006 if (funcdesc_h == NULL || funcdesc_h->dynindx == -1)
4007 abort ();
4008
4009 /* Create a JMP_SLOT reloc to inform the dynamic linker to
4010 fill in the PLT entry. */
5bd4f169 4011
65f38f15
AM		 4012 rela.r_offset = (htab->splt->output_section->vma
4013 + htab->splt->output_offset
4014 + h->plt.offset);
4015 rela.r_info = ELF64_R_INFO (funcdesc_h->dynindx, R_PPC64_JMP_SLOT);
4016 rela.r_addend = 0;
4017
4018 loc = (Elf64_External_Rela *) htab->srelplt->contents;
4019 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4020 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4021 }
4022
4023 if (h->got.offset != (bfd_vma) -1)
4024 {
5bd4f169 4025 Elf_Internal_Rela rela;
65f38f15 4026 Elf64_External_Rela *loc;
5bd4f169
AM		 4027
4028 /* This symbol has an entry in the global offset table. Set it
4029 up. */
4030
65f38f15
AM		 4031 if (htab->sgot == NULL || htab->srelgot == NULL)
4032 abort ();
5bd4f169 4033
65f38f15
AM		 4034 rela.r_offset = (htab->sgot->output_section->vma
4035 + htab->sgot->output_offset
dc810e39 4036 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 4037
65f38f15
AM		 4038 /* If this is a static link, or it is a -Bsymbolic link and the
4039 symbol is defined locally or was forced to be local because
4040 of a version file, we just want to emit a RELATIVE reloc.
4041 The entry in the global offset table will already have been
4042 initialized in the relocate_section function. */
5bd4f169 4043 if (info->shared
65f38f15
AM		 4044 && (info->symbolic
4045 || h->dynindx == -1
4046 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 4047 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4048 {
65f38f15 4049 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 4050 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4051 rela.r_addend = (h->root.u.def.value
4052 + h->root.u.def.section->output_section->vma
4053 + h->root.u.def.section->output_offset);
4054 }
4055 else
4056 {
4057 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 4058 bfd_put_64 (output_bfd, (bfd_vma) 0,
4059 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 4060 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
4061 rela.r_addend = 0;
4062 }
4063
65f38f15
AM		 4064 loc = (Elf64_External_Rela *) htab->srelgot->contents;
4065 loc += htab->srelgot->reloc_count++;
4066 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4067 }
4068
4069 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4070 {
5bd4f169 4071 Elf_Internal_Rela rela;
65f38f15 4072 Elf64_External_Rela *loc;
5bd4f169 4073
65f38f15 4074 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 4075
65f38f15
AM		 4076 if (h->dynindx == -1
4077 || (h->root.type != bfd_link_hash_defined
4078 && h->root.type != bfd_link_hash_defweak)
4079 || htab->srelbss == NULL)
4080 abort ();
5bd4f169
AM		 4081
4082 rela.r_offset = (h->root.u.def.value
4083 + h->root.u.def.section->output_section->vma
4084 + h->root.u.def.section->output_offset);
4085 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
4086 rela.r_addend = 0;
65f38f15
AM		 4087 loc = (Elf64_External_Rela *) htab->srelbss->contents;
4088 loc += htab->srelbss->reloc_count++;
4089 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4090 }
4091
5bd4f169
AM		 4092 /* Mark some specially defined symbols as absolute. */
4093 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
4094 sym->st_shndx = SHN_ABS;
4095
4096 return true;
4097}
4098
65f38f15
AM		 4099/* Used to decide how to sort relocs in an optimal manner for the
4100 dynamic linker, before writing them out. */
4101
4102static enum elf_reloc_type_class
4103ppc64_elf_reloc_type_class (rela)
4104 const Elf_Internal_Rela *rela;
4105{
a33d1f77
AM		 4106 enum elf_ppc_reloc_type r_type;
4107
4108 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
4109 switch (r_type)
65f38f15
AM		 4110 {
4111 case R_PPC64_RELATIVE:
4112 return reloc_class_relative;
4113 case R_PPC64_JMP_SLOT:
4114 return reloc_class_plt;
4115 case R_PPC64_COPY:
4116 return reloc_class_copy;
4117 default:
4118 return reloc_class_normal;
4119 }
4120}
4121
5bd4f169
AM		 4122/* Finish up the dynamic sections. */
4123
4124static boolean
4125ppc64_elf_finish_dynamic_sections (output_bfd, info)
4126 bfd *output_bfd;
4127 struct bfd_link_info *info;
4128{
65f38f15
AM		 4129 struct ppc_link_hash_table *htab;
4130 bfd *dynobj;
5bd4f169 4131 asection *sdyn;
5bd4f169 4132
65f38f15
AM		 4133 htab = ppc_hash_table (info);
4134 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4135 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4136
65f38f15 4137 if (htab->elf.dynamic_sections_created)
5bd4f169 4138 {
5bd4f169
AM		 4139 Elf64_External_Dyn *dyncon, *dynconend;
4140
65f38f15
AM		 4141 if (sdyn == NULL || htab->sgot == NULL)
4142 abort ();
5bd4f169
AM		 4143
4144 dyncon = (Elf64_External_Dyn *) sdyn->contents;
4145 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4146 for (; dyncon < dynconend; dyncon++)
4147 {
4148 Elf_Internal_Dyn dyn;
5bd4f169
AM		 4149
4150 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4151
4152 switch (dyn.d_tag)
4153 {
65f38f15
AM		 4154 default:
4155 continue;
5bd4f169 4156
5d1634d7
AM		 4157 case DT_PPC64_GLINK:
4158 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
4159 + htab->sglink->output_offset);
4160 break;
4161
65f38f15 4162 case DT_PLTGOT:
5d1634d7
AM		 4163 dyn.d_un.d_ptr = (htab->splt->output_section->vma
4164 + htab->splt->output_offset);
65f38f15
AM		 4165 break;
4166
4167 case DT_JMPREL:
5d1634d7
AM		 4168 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
4169 + htab->srelplt->output_offset);
65f38f15 4170 break;
5bd4f169 4171
65f38f15 4172 case DT_PLTRELSZ:
5d1634d7
AM		 4173 dyn.d_un.d_val = htab->srelplt->_raw_size;
4174 break;
4175
4176 case DT_RELASZ:
4177 /* Don't count procedure linkage table relocs in the
4178 overall reloc count. */
4179 if (htab->srelplt != NULL)
4180 dyn.d_un.d_val -= htab->srelplt->_raw_size;
65f38f15 4181 break;
5bd4f169 4182 }
5bd4f169 4183
65f38f15 4184 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 4185 }
5bd4f169
AM		 4186 }
4187
5d1634d7
AM		 4188 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
4189 {
4190 /* Fill in the first entry in the global offset table.
4191 We use it to hold the link-time TOCbase. */
4192 bfd_put_64 (output_bfd,
4193 elf_gp (output_bfd) - TOC_BASE_OFF,
4194 htab->sgot->contents);
4195
4196 /* Set .got entry size. */
4197 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
4198 }
4199
4200 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4201 {
4202 /* Set .plt entry size. */
4203 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
4204 = PLT_ENTRY_SIZE;
4205 }
4206
5bd4f169
AM		 4207 return true;
4208}
4209
4210#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
4211#define TARGET_LITTLE_NAME "elf64-powerpcle"
4212#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
4213#define TARGET_BIG_NAME "elf64-powerpc"
4214#define ELF_ARCH bfd_arch_powerpc
4215#define ELF_MACHINE_CODE EM_PPC64
4216#define ELF_MAXPAGESIZE 0x10000
4217#define elf_info_to_howto ppc64_elf_info_to_howto
4218
4219#ifdef EM_CYGNUS_POWERPC
4220#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
4221#endif
4222
4223#ifdef EM_PPC_OLD
4224#define ELF_MACHINE_ALT2 EM_PPC_OLD
4225#endif
4226
4227#define elf_backend_want_got_sym 0
4228#define elf_backend_want_plt_sym 0
4229#define elf_backend_plt_alignment 3
4230#define elf_backend_plt_not_loaded 1
4231#define elf_backend_got_symbol_offset 0
5d1634d7
AM		 4232#define elf_backend_got_header_size 8
4233#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
5bd4f169 4234#define elf_backend_can_gc_sections 1
65f38f15 4235#define elf_backend_can_refcount 1
5bd4f169 4236
65f38f15
AM		 4237#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
4238#define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
65f38f15
AM		 4239#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
4240#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
65f38f15
AM		 4241
4242#define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
4243#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
4244#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
4245#define elf_backend_check_relocs ppc64_elf_check_relocs
4246#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
4247#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
4248#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
4249#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
4250#define elf_backend_fake_sections ppc64_elf_fake_sections
4251#define elf_backend_relocate_section ppc64_elf_relocate_section
4252#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
4253#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
4254#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 4255
4256#include "elf64-target.h"
GDB Binutils - Deliverables
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