projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Fix extracting from AIX big archives.
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
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 *));
82bd7b59
AM		 54static boolean create_linkage_sections
55 PARAMS ((bfd *, struct bfd_link_info *));
65f38f15
AM		 56static boolean create_got_section
57 PARAMS ((bfd *, struct bfd_link_info *));
5bd4f169
AM		 58static boolean ppc64_elf_create_dynamic_sections
59 PARAMS ((bfd *, struct bfd_link_info *));
65f38f15
AM		 60static void ppc64_elf_copy_indirect_symbol
61 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
5bd4f169
AM		 62static boolean ppc64_elf_check_relocs
63 PARAMS ((bfd *, struct bfd_link_info *, asection *,
64 const Elf_Internal_Rela *));
65static asection * ppc64_elf_gc_mark_hook
66 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
67 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
68static boolean ppc64_elf_gc_sweep_hook
69 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
70 const Elf_Internal_Rela *relocs));
e86ce104
AM		 71static boolean func_desc_adjust
72 PARAMS ((struct elf_link_hash_entry *, PTR));
73static boolean ppc64_elf_func_desc_adjust
74 PARAMS ((bfd *, struct bfd_link_info *));
5bd4f169
AM		 75static boolean ppc64_elf_adjust_dynamic_symbol
76 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
e86ce104
AM		 77static void ppc64_elf_hide_symbol
78 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
65f38f15
AM		 79static boolean allocate_dynrelocs
80 PARAMS ((struct elf_link_hash_entry *, PTR));
81static boolean readonly_dynrelocs
5bd4f169 82 PARAMS ((struct elf_link_hash_entry *, PTR));
65f38f15
AM		 83static enum elf_reloc_type_class ppc64_elf_reloc_type_class
84 PARAMS ((const Elf_Internal_Rela *));
5bd4f169
AM		 85static boolean ppc64_elf_size_dynamic_sections
86 PARAMS ((bfd *, struct bfd_link_info *));
5d1634d7
AM		 87static bfd_byte *build_plt_stub
88 PARAMS ((bfd *, bfd_byte *, int, int));
89static boolean build_one_stub
90 PARAMS ((struct elf_link_hash_entry *, PTR));
5bd4f169
AM		 91static boolean ppc64_elf_fake_sections
92 PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
93static boolean ppc64_elf_relocate_section
94 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
95 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
96 asection **));
97static boolean ppc64_elf_finish_dynamic_symbol
98 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
99 Elf_Internal_Sym *));
100static boolean ppc64_elf_finish_dynamic_sections
101 PARAMS ((bfd *, struct bfd_link_info *));
102
103
5bd4f169
AM		 104/* Mask to set RA in memory instructions. */
105#define RA_REGISTER_MASK 0x001f0000
106
107/* Value to shift register by to insert RA. */
108#define RA_REGISTER_SHIFT 16
109
110/* The name of the dynamic interpreter. This is put in the .interp
111 section. */
112#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
113
114/* The size in bytes of an entry in the procedure linkage table. */
115#define PLT_ENTRY_SIZE 24
116
117/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 118#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 119
120/* TOC base pointers offset from start of TOC. */
121#define TOC_BASE_OFF (0x8000)
122
5d1634d7
AM		 123/* .plt call stub instructions. */
124#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
125#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
126#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
127#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
128#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
129 /* ld %r11,xxx+16@l(%r12) */
130#define BCTR 0x4e800420 /* bctr */
131
132/* The normal stub is this size. */
133#define PLT_CALL_STUB_SIZE (7*4)
134
135/* But sometimes the .plt entry crosses a 64k boundary, and we need
136 to adjust the high word with this insn. */
137#define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
5bd4f169 138
5d1634d7
AM		 139/* The .glink fixup call stub is the same as the .plt call stub, but
140 the first instruction restores r2, and the std is omitted. */
141#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
142
143/* Always allow this much space. */
144#define GLINK_CALL_STUB_SIZE (8*4)
145
146/* Pad with this. */
147#define NOP 0x60000000
148
149/* .glink entries for the first 32k functions are two instructions. */
150#define LI_R0_0 0x38000000 /* li %r0,0 */
151#define B_DOT 0x48000000 /* b . */
152
153/* After that, we need two instructions to load the index, followed by
154 a branch. */
155#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 156#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 157
82bd7b59
AM		 158/* Instructions to save and restore floating point regs. */
159#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
160#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
161#define BLR 0x4e800020 /* blr */
162
41bd81ab
AM		 163/* Since .opd is an array of descriptors and each entry will end up
164 with identical R_PPC64_RELATIVE relocs, there is really no need to
165 propagate .opd relocs; The dynamic linker should be taught to
19397422
AM		 166 relocate .opd without reloc entries. FIXME: .opd should be trimmed
167 of unused values. */
41bd81ab
AM		 168#ifndef NO_OPD_RELOCS
169#define NO_OPD_RELOCS 0
170#endif
5bd4f169
AM		 171\f
172/* Relocation HOWTO's. */
173static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
174
175static reloc_howto_type ppc64_elf_howto_raw[] = {
176 /* This reloc does nothing. */
177 HOWTO (R_PPC64_NONE, /* type */
178 0, /* rightshift */
179 2, /* size (0 = byte, 1 = short, 2 = long) */
180 32, /* bitsize */
181 false, /* pc_relative */
182 0, /* bitpos */
183 complain_overflow_bitfield, /* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_PPC64_NONE", /* name */
186 false, /* partial_inplace */
187 0, /* src_mask */
188 0, /* dst_mask */
189 false), /* pcrel_offset */
190
191 /* A standard 32 bit relocation. */
192 HOWTO (R_PPC64_ADDR32, /* type */
193 0, /* rightshift */
194 2, /* size (0 = byte, 1 = short, 2 = long) */
195 32, /* bitsize */
196 false, /* pc_relative */
197 0, /* bitpos */
198 complain_overflow_bitfield, /* complain_on_overflow */
199 bfd_elf_generic_reloc, /* special_function */
200 "R_PPC64_ADDR32", /* name */
201 false, /* partial_inplace */
202 0, /* src_mask */
203 0xffffffff, /* dst_mask */
204 false), /* pcrel_offset */
205
206 /* An absolute 26 bit branch; the lower two bits must be zero.
207 FIXME: we don't check that, we just clear them. */
208 HOWTO (R_PPC64_ADDR24, /* type */
209 0, /* rightshift */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
211 26, /* bitsize */
212 false, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_bitfield, /* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_PPC64_ADDR24", /* name */
217 false, /* partial_inplace */
218 0, /* src_mask */
219 0x3fffffc, /* dst_mask */
220 false), /* pcrel_offset */
221
222 /* A standard 16 bit relocation. */
223 HOWTO (R_PPC64_ADDR16, /* type */
224 0, /* rightshift */
225 1, /* size (0 = byte, 1 = short, 2 = long) */
226 16, /* bitsize */
227 false, /* pc_relative */
228 0, /* bitpos */
229 complain_overflow_bitfield, /* complain_on_overflow */
230 bfd_elf_generic_reloc, /* special_function */
231 "R_PPC64_ADDR16", /* name */
232 false, /* partial_inplace */
233 0, /* src_mask */
234 0xffff, /* dst_mask */
235 false), /* pcrel_offset */
236
237 /* A 16 bit relocation without overflow. */
238 HOWTO (R_PPC64_ADDR16_LO, /* type */
239 0, /* rightshift */
240 1, /* size (0 = byte, 1 = short, 2 = long) */
241 16, /* bitsize */
242 false, /* pc_relative */
243 0, /* bitpos */
244 complain_overflow_dont,/* complain_on_overflow */
245 bfd_elf_generic_reloc, /* special_function */
246 "R_PPC64_ADDR16_LO", /* name */
247 false, /* partial_inplace */
248 0, /* src_mask */
249 0xffff, /* dst_mask */
250 false), /* pcrel_offset */
251
252 /* Bits 16-31 of an address. */
253 HOWTO (R_PPC64_ADDR16_HI, /* type */
254 16, /* rightshift */
255 1, /* size (0 = byte, 1 = short, 2 = long) */
256 16, /* bitsize */
257 false, /* pc_relative */
258 0, /* bitpos */
259 complain_overflow_dont, /* complain_on_overflow */
260 bfd_elf_generic_reloc, /* special_function */
261 "R_PPC64_ADDR16_HI", /* name */
262 false, /* partial_inplace */
263 0, /* src_mask */
264 0xffff, /* dst_mask */
265 false), /* pcrel_offset */
266
267 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
268 bits, treated as a signed number, is negative. */
269 HOWTO (R_PPC64_ADDR16_HA, /* type */
270 16, /* rightshift */
271 1, /* size (0 = byte, 1 = short, 2 = long) */
272 16, /* bitsize */
273 false, /* pc_relative */
274 0, /* bitpos */
275 complain_overflow_dont, /* complain_on_overflow */
276 ppc64_elf_addr16_ha_reloc, /* special_function */
277 "R_PPC64_ADDR16_HA", /* name */
278 false, /* partial_inplace */
279 0, /* src_mask */
280 0xffff, /* dst_mask */
281 false), /* pcrel_offset */
282
283 /* An absolute 16 bit branch; the lower two bits must be zero.
284 FIXME: we don't check that, we just clear them. */
285 HOWTO (R_PPC64_ADDR14, /* type */
286 0, /* rightshift */
287 2, /* size (0 = byte, 1 = short, 2 = long) */
288 16, /* bitsize */
289 false, /* pc_relative */
290 0, /* bitpos */
291 complain_overflow_bitfield, /* complain_on_overflow */
292 bfd_elf_generic_reloc, /* special_function */
293 "R_PPC64_ADDR14", /* name */
294 false, /* partial_inplace */
295 0, /* src_mask */
296 0xfffc, /* dst_mask */
297 false), /* pcrel_offset */
298
299 /* An absolute 16 bit branch, for which bit 10 should be set to
300 indicate that the branch is expected to be taken. The lower two
301 bits must be zero. */
302 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
303 0, /* rightshift */
304 2, /* size (0 = byte, 1 = short, 2 = long) */
305 16, /* bitsize */
306 false, /* pc_relative */
307 0, /* bitpos */
308 complain_overflow_bitfield, /* complain_on_overflow */
309 bfd_elf_generic_reloc, /* special_function */
310 "R_PPC64_ADDR14_BRTAKEN",/* name */
311 false, /* partial_inplace */
312 0, /* src_mask */
313 0xfffc, /* dst_mask */
314 false), /* pcrel_offset */
315
316 /* An absolute 16 bit branch, for which bit 10 should be set to
317 indicate that the branch is not expected to be taken. The lower
318 two bits must be zero. */
319 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
320 0, /* rightshift */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
322 16, /* bitsize */
323 false, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_bitfield, /* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_PPC64_ADDR14_BRNTAKEN",/* name */
328 false, /* partial_inplace */
329 0, /* src_mask */
330 0xfffc, /* dst_mask */
331 false), /* pcrel_offset */
332
333 /* A relative 26 bit branch; the lower two bits must be zero. */
334 HOWTO (R_PPC64_REL24, /* type */
335 0, /* rightshift */
336 2, /* size (0 = byte, 1 = short, 2 = long) */
337 26, /* bitsize */
338 true, /* pc_relative */
339 0, /* bitpos */
340 complain_overflow_signed, /* complain_on_overflow */
341 bfd_elf_generic_reloc, /* special_function */
342 "R_PPC64_REL24", /* name */
343 false, /* partial_inplace */
344 0, /* src_mask */
345 0x3fffffc, /* dst_mask */
346 true), /* pcrel_offset */
347
348 /* A relative 16 bit branch; the lower two bits must be zero. */
349 HOWTO (R_PPC64_REL14, /* type */
350 0, /* rightshift */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
352 16, /* bitsize */
353 true, /* pc_relative */
354 0, /* bitpos */
355 complain_overflow_signed, /* complain_on_overflow */
356 bfd_elf_generic_reloc, /* special_function */
357 "R_PPC64_REL14", /* name */
358 false, /* partial_inplace */
359 0, /* src_mask */
360 0xfffc, /* dst_mask */
361 true), /* pcrel_offset */
362
363 /* A relative 16 bit branch. Bit 10 should be set to indicate that
364 the branch is expected to be taken. The lower two bits must be
365 zero. */
366 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
367 0, /* rightshift */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
369 16, /* bitsize */
370 true, /* pc_relative */
371 0, /* bitpos */
372 complain_overflow_signed, /* complain_on_overflow */
373 bfd_elf_generic_reloc, /* special_function */
374 "R_PPC64_REL14_BRTAKEN", /* name */
375 false, /* partial_inplace */
376 0, /* src_mask */
377 0xfffc, /* dst_mask */
378 true), /* pcrel_offset */
379
380 /* A relative 16 bit branch. Bit 10 should be set to indicate that
381 the branch is not expected to be taken. The lower two bits must
382 be zero. */
383 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
384 0, /* rightshift */
385 2, /* size (0 = byte, 1 = short, 2 = long) */
386 16, /* bitsize */
387 true, /* pc_relative */
388 0, /* bitpos */
389 complain_overflow_signed, /* complain_on_overflow */
390 bfd_elf_generic_reloc, /* special_function */
391 "R_PPC64_REL14_BRNTAKEN",/* name */
392 false, /* partial_inplace */
393 0, /* src_mask */
394 0xfffc, /* dst_mask */
395 true), /* pcrel_offset */
396
397 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
398 symbol. */
399 HOWTO (R_PPC64_GOT16, /* type */
400 0, /* rightshift */
401 1, /* size (0 = byte, 1 = short, 2 = long) */
402 16, /* bitsize */
403 false, /* pc_relative */
404 0, /* bitpos */
405 complain_overflow_signed, /* complain_on_overflow */
406 bfd_elf_generic_reloc, /* special_function */
407 "R_PPC64_GOT16", /* name */
408 false, /* partial_inplace */
409 0, /* src_mask */
410 0xffff, /* dst_mask */
411 false), /* pcrel_offset */
412
413 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
414 the symbol. */
415 HOWTO (R_PPC64_GOT16_LO, /* type */
416 0, /* rightshift */
417 1, /* size (0 = byte, 1 = short, 2 = long) */
418 16, /* bitsize */
419 false, /* pc_relative */
420 0, /* bitpos */
421 complain_overflow_dont, /* complain_on_overflow */
422 bfd_elf_generic_reloc, /* special_function */
423 "R_PPC64_GOT16_LO", /* name */
424 false, /* partial_inplace */
425 0, /* src_mask */
426 0xffff, /* dst_mask */
427 false), /* pcrel_offset */
428
429 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
430 the symbol. */
431 HOWTO (R_PPC64_GOT16_HI, /* type */
432 16, /* rightshift */
433 1, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
435 false, /* pc_relative */
436 0, /* bitpos */
437 complain_overflow_dont,/* complain_on_overflow */
438 bfd_elf_generic_reloc, /* special_function */
439 "R_PPC64_GOT16_HI", /* name */
440 false, /* partial_inplace */
441 0, /* src_mask */
442 0xffff, /* dst_mask */
443 false), /* pcrel_offset */
444
445 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
446 the symbol. */
447 HOWTO (R_PPC64_GOT16_HA, /* type */
448 16, /* rightshift */
449 1, /* size (0 = byte, 1 = short, 2 = long) */
450 16, /* bitsize */
451 false, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_dont,/* complain_on_overflow */
454 ppc64_elf_addr16_ha_reloc, /* special_function */
455 "R_PPC64_GOT16_HA", /* name */
456 false, /* partial_inplace */
457 0, /* src_mask */
458 0xffff, /* dst_mask */
459 false), /* pcrel_offset */
460
461 /* This is used only by the dynamic linker. The symbol should exist
462 both in the object being run and in some shared library. The
463 dynamic linker copies the data addressed by the symbol from the
464 shared library into the object, because the object being
465 run has to have the data at some particular address. */
466 HOWTO (R_PPC64_COPY, /* type */
467 0, /* rightshift */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
469 32, /* bitsize */
470 false, /* pc_relative */
471 0, /* bitpos */
472 complain_overflow_bitfield, /* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
474 "R_PPC64_COPY", /* name */
475 false, /* partial_inplace */
476 0, /* src_mask */
477 0, /* dst_mask */
478 false), /* pcrel_offset */
479
480 /* Like R_PPC64_ADDR64, but used when setting global offset table
481 entries. */
482 HOWTO (R_PPC64_GLOB_DAT, /* type */
483 0, /* rightshift */
484 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
485 64, /* bitsize */
486 false, /* pc_relative */
487 0, /* bitpos */
488 complain_overflow_dont, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* special_function */
490 "R_PPC64_GLOB_DAT", /* name */
491 false, /* partial_inplace */
492 0, /* src_mask */
493 0xffffffffffffffff, /* dst_mask */
494 false), /* pcrel_offset */
495
496 /* Created by the link editor. Marks a procedure linkage table
497 entry for a symbol. */
498 HOWTO (R_PPC64_JMP_SLOT, /* type */
499 0, /* rightshift */
500 0, /* size (0 = byte, 1 = short, 2 = long) */
501 0, /* bitsize */
502 false, /* pc_relative */
503 0, /* bitpos */
504 complain_overflow_dont, /* complain_on_overflow */
505 bfd_elf_generic_reloc, /* special_function */
506 "R_PPC64_JMP_SLOT", /* name */
507 false, /* partial_inplace */
508 0, /* src_mask */
509 0, /* dst_mask */
510 false), /* pcrel_offset */
511
512 /* Used only by the dynamic linker. When the object is run, this
513 doubleword64 is set to the load address of the object, plus the
514 addend. */
515 HOWTO (R_PPC64_RELATIVE, /* type */
516 0, /* rightshift */
517 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
518 64, /* bitsize */
519 false, /* pc_relative */
520 0, /* bitpos */
521 complain_overflow_dont, /* complain_on_overflow */
522 bfd_elf_generic_reloc, /* special_function */
523 "R_PPC64_RELATIVE", /* name */
524 false, /* partial_inplace */
525 0, /* src_mask */
526 0xffffffffffffffff, /* dst_mask */
527 false), /* pcrel_offset */
528
529 /* Like R_PPC64_ADDR32, but may be unaligned. */
530 HOWTO (R_PPC64_UADDR32, /* type */
531 0, /* rightshift */
532 2, /* size (0 = byte, 1 = short, 2 = long) */
533 32, /* bitsize */
534 false, /* pc_relative */
535 0, /* bitpos */
536 complain_overflow_bitfield, /* complain_on_overflow */
537 bfd_elf_generic_reloc, /* special_function */
538 "R_PPC64_UADDR32", /* name */
539 false, /* partial_inplace */
540 0, /* src_mask */
541 0xffffffff, /* dst_mask */
542 false), /* pcrel_offset */
543
544 /* Like R_PPC64_ADDR16, but may be unaligned. */
545 HOWTO (R_PPC64_UADDR16, /* type */
546 0, /* rightshift */
547 1, /* size (0 = byte, 1 = short, 2 = long) */
548 16, /* bitsize */
549 false, /* pc_relative */
550 0, /* bitpos */
551 complain_overflow_bitfield, /* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_PPC64_UADDR16", /* name */
554 false, /* partial_inplace */
555 0, /* src_mask */
556 0xffff, /* dst_mask */
557 false), /* pcrel_offset */
558
559 /* 32-bit PC relative. */
560 HOWTO (R_PPC64_REL32, /* type */
561 0, /* rightshift */
562 2, /* size (0 = byte, 1 = short, 2 = long) */
563 32, /* bitsize */
564 true, /* pc_relative */
565 0, /* bitpos */
566 /* FIXME: Verify. Was complain_overflow_bitfield. */
567 complain_overflow_signed, /* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_PPC64_REL32", /* name */
570 false, /* partial_inplace */
571 0, /* src_mask */
572 0xffffffff, /* dst_mask */
573 true), /* pcrel_offset */
574
10ed1bba 575 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 576 HOWTO (R_PPC64_PLT32, /* type */
577 0, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 32, /* bitsize */
580 false, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_bitfield, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_PPC64_PLT32", /* name */
585 false, /* partial_inplace */
586 0, /* src_mask */
587 0, /* dst_mask */
588 false), /* pcrel_offset */
589
590 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
591 FIXME: R_PPC64_PLTREL32 not supported. */
592 HOWTO (R_PPC64_PLTREL32, /* type */
593 0, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 32, /* bitsize */
596 true, /* pc_relative */
597 0, /* bitpos */
598 complain_overflow_signed, /* complain_on_overflow */
599 bfd_elf_generic_reloc, /* special_function */
600 "R_PPC64_PLTREL32", /* name */
601 false, /* partial_inplace */
602 0, /* src_mask */
603 0, /* dst_mask */
604 true), /* pcrel_offset */
605
606 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
607 the symbol. */
608 HOWTO (R_PPC64_PLT16_LO, /* type */
609 0, /* rightshift */
610 1, /* size (0 = byte, 1 = short, 2 = long) */
611 16, /* bitsize */
612 false, /* pc_relative */
613 0, /* bitpos */
614 complain_overflow_dont, /* complain_on_overflow */
615 bfd_elf_generic_reloc, /* special_function */
616 "R_PPC64_PLT16_LO", /* name */
617 false, /* partial_inplace */
618 0, /* src_mask */
619 0xffff, /* dst_mask */
620 false), /* pcrel_offset */
621
622 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
623 the symbol. */
624 HOWTO (R_PPC64_PLT16_HI, /* type */
625 16, /* rightshift */
626 1, /* size (0 = byte, 1 = short, 2 = long) */
627 16, /* bitsize */
628 false, /* pc_relative */
629 0, /* bitpos */
630 complain_overflow_dont, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
632 "R_PPC64_PLT16_HI", /* name */
633 false, /* partial_inplace */
634 0, /* src_mask */
635 0xffff, /* dst_mask */
636 false), /* pcrel_offset */
637
638 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
639 the symbol. */
640 HOWTO (R_PPC64_PLT16_HA, /* type */
641 16, /* rightshift */
642 1, /* size (0 = byte, 1 = short, 2 = long) */
643 16, /* bitsize */
644 false, /* pc_relative */
645 0, /* bitpos */
646 complain_overflow_dont, /* complain_on_overflow */
647 ppc64_elf_addr16_ha_reloc, /* special_function */
648 "R_PPC64_PLT16_HA", /* name */
649 false, /* partial_inplace */
650 0, /* src_mask */
651 0xffff, /* dst_mask */
652 false), /* pcrel_offset */
653
654 /* 32-bit section relative relocation. */
655 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
656 dst_mask=0. */
657 HOWTO (R_PPC64_SECTOFF, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
661 true, /* pc_relative */
662 0, /* bitpos */
663 complain_overflow_bitfield, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_PPC64_SECTOFF", /* name */
666 false, /* partial_inplace */
667 0, /* src_mask */
668 0, /* dst_mask */
669 true), /* pcrel_offset */
670
671 /* 16-bit lower half section relative relocation. */
672 HOWTO (R_PPC64_SECTOFF_LO, /* type */
673 0, /* rightshift */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
675 16, /* bitsize */
676 false, /* pc_relative */
677 0, /* bitpos */
678 complain_overflow_dont, /* complain_on_overflow */
679 bfd_elf_generic_reloc, /* special_function */
680 "R_PPC64_SECTOFF_LO", /* name */
681 false, /* partial_inplace */
682 0, /* src_mask */
683 0xffff, /* dst_mask */
684 false), /* pcrel_offset */
685
686 /* 16-bit upper half section relative relocation. */
687 HOWTO (R_PPC64_SECTOFF_HI, /* type */
688 16, /* rightshift */
689 1, /* size (0 = byte, 1 = short, 2 = long) */
690 16, /* bitsize */
691 false, /* pc_relative */
692 0, /* bitpos */
693 complain_overflow_dont, /* complain_on_overflow */
694 bfd_elf_generic_reloc, /* special_function */
695 "R_PPC64_SECTOFF_HI", /* name */
696 false, /* partial_inplace */
697 0, /* src_mask */
698 0xffff, /* dst_mask */
699 false), /* pcrel_offset */
700
701 /* 16-bit upper half adjusted section relative relocation. */
702 HOWTO (R_PPC64_SECTOFF_HA, /* type */
703 16, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 false, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_dont, /* complain_on_overflow */
709 ppc64_elf_addr16_ha_reloc, /* special_function */
710 "R_PPC64_SECTOFF_HA", /* name */
711 false, /* partial_inplace */
712 0, /* src_mask */
713 0xffff, /* dst_mask */
714 false), /* pcrel_offset */
715
716 /* Like R_PPC64_REL24 without touching the two least significant
717 bits. */
718 /* FIXME: Verify R_PPC64_ADDR30. */
719 HOWTO (R_PPC64_ADDR30, /* type */
720 2, /* rightshift */
721 2, /* size (0 = byte, 1 = short, 2 = long) */
722 30, /* bitsize */
723 true, /* pc_relative */
724 0, /* bitpos */
725 complain_overflow_dont, /* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_PPC64_ADDR30", /* name */
728 false, /* partial_inplace */
729 0, /* src_mask */
730 0xfffffffc, /* dst_mask */
731 true), /* pcrel_offset */
732
733 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
734
735 /* A standard 64-bit relocation. */
736 HOWTO (R_PPC64_ADDR64, /* type */
737 0, /* rightshift */
738 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
739 64, /* bitsize */
740 false, /* pc_relative */
741 0, /* bitpos */
742 complain_overflow_dont, /* complain_on_overflow */
743 bfd_elf_generic_reloc, /* special_function */
744 "R_PPC64_ADDR64", /* name */
745 false, /* partial_inplace */
746 0, /* src_mask */
747 0xffffffffffffffff, /* dst_mask */
748 false), /* pcrel_offset */
749
750 /* The bits 32-47 of an address. */
751 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
752 32, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
755 false, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
758 bfd_elf_generic_reloc, /* special_function */
759 "R_PPC64_ADDR16_HIGHER", /* name */
760 false, /* partial_inplace */
761 0, /* src_mask */
762 0xffff, /* dst_mask */
763 false), /* pcrel_offset */
764
765 /* The bits 32-47 of an address, plus 1 if the contents of the low
766 16 bits, treated as a signed number, is negative. */
767 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
768 32, /* rightshift */
769 1, /* size (0 = byte, 1 = short, 2 = long) */
770 16, /* bitsize */
771 false, /* pc_relative */
772 0, /* bitpos */
773 complain_overflow_dont, /* complain_on_overflow */
774 ppc64_elf_addr16_ha_reloc, /* special_function */
775 "R_PPC64_ADDR16_HIGHERA", /* name */
776 false, /* partial_inplace */
777 0, /* src_mask */
778 0xffff, /* dst_mask */
779 false), /* pcrel_offset */
780
781 /* The bits 48-63 of an address. */
782 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
783 48, /* rightshift */
784 1, /* size (0 = byte, 1 = short, 2 = long) */
785 16, /* bitsize */
786 false, /* pc_relative */
787 0, /* bitpos */
788 complain_overflow_dont, /* complain_on_overflow */
789 bfd_elf_generic_reloc, /* special_function */
790 "R_PPC64_ADDR16_HIGHEST", /* name */
791 false, /* partial_inplace */
792 0, /* src_mask */
793 0xffff, /* dst_mask */
794 false), /* pcrel_offset */
795
796 /* The bits 48-63 of an address, plus 1 if the contents of the low
797 16 bits, treated as a signed number, is negative. */
798 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
799 48, /* rightshift */
800 1, /* size (0 = byte, 1 = short, 2 = long) */
801 16, /* bitsize */
802 false, /* pc_relative */
803 0, /* bitpos */
804 complain_overflow_dont, /* complain_on_overflow */
805 ppc64_elf_addr16_ha_reloc, /* special_function */
806 "R_PPC64_ADDR16_HIGHESTA", /* name */
807 false, /* partial_inplace */
808 0, /* src_mask */
809 0xffff, /* dst_mask */
810 false), /* pcrel_offset */
811
812 /* Like ADDR64, but may be unaligned. */
813 HOWTO (R_PPC64_UADDR64, /* type */
814 0, /* rightshift */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
816 64, /* bitsize */
817 false, /* pc_relative */
818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_UADDR64", /* name */
822 false, /* partial_inplace */
823 0, /* src_mask */
824 0xffffffffffffffff, /* dst_mask */
825 false), /* pcrel_offset */
826
827 /* 64-bit relative relocation. */
828 HOWTO (R_PPC64_REL64, /* type */
829 0, /* rightshift */
830 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
831 64, /* bitsize */
832 true, /* pc_relative */
833 0, /* bitpos */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_REL64", /* name */
837 false, /* partial_inplace */
838 0, /* src_mask */
839 0xffffffffffffffff, /* dst_mask */
840 true), /* pcrel_offset */
841
842 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 843 HOWTO (R_PPC64_PLT64, /* type */
844 0, /* rightshift */
845 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
846 64, /* bitsize */
847 false, /* pc_relative */
848 0, /* bitpos */
849 complain_overflow_dont, /* complain_on_overflow */
850 bfd_elf_generic_reloc, /* special_function */
851 "R_PPC64_PLT64", /* name */
852 false, /* partial_inplace */
853 0, /* src_mask */
854 0, /* dst_mask */
855 false), /* pcrel_offset */
856
857 /* 64-bit PC relative relocation to the symbol's procedure linkage
858 table. */
859 /* FIXME: R_PPC64_PLTREL64 not supported. */
860 HOWTO (R_PPC64_PLTREL64, /* type */
861 0, /* rightshift */
862 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
863 64, /* bitsize */
864 true, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_dont, /* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_PPC64_PLTREL64", /* name */
869 false, /* partial_inplace */
870 0, /* src_mask */
871 0, /* dst_mask */
872 true), /* pcrel_offset */
873
874 /* 16 bit TOC-relative relocation. */
875
876 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
877 HOWTO (R_PPC64_TOC16, /* type */
878 0, /* rightshift */
879 1, /* size (0 = byte, 1 = short, 2 = long) */
880 16, /* bitsize */
881 false, /* pc_relative */
882 0, /* bitpos */
883 complain_overflow_signed, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_TOC16", /* name */
886 false, /* partial_inplace */
887 0, /* src_mask */
888 0xffff, /* dst_mask */
889 false), /* pcrel_offset */
890
891 /* 16 bit TOC-relative relocation without overflow. */
892
893 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
894 HOWTO (R_PPC64_TOC16_LO, /* type */
895 0, /* rightshift */
896 1, /* size (0 = byte, 1 = short, 2 = long) */
897 16, /* bitsize */
898 false, /* pc_relative */
899 0, /* bitpos */
900 complain_overflow_dont, /* complain_on_overflow */
901 bfd_elf_generic_reloc, /* special_function */
902 "R_PPC64_TOC16_LO", /* name */
903 false, /* partial_inplace */
904 0, /* src_mask */
905 0xffff, /* dst_mask */
906 false), /* pcrel_offset */
907
908 /* 16 bit TOC-relative relocation, high 16 bits. */
909
910 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
911 HOWTO (R_PPC64_TOC16_HI, /* type */
912 16, /* rightshift */
913 1, /* size (0 = byte, 1 = short, 2 = long) */
914 16, /* bitsize */
915 false, /* pc_relative */
916 0, /* bitpos */
917 complain_overflow_dont, /* complain_on_overflow */
918 bfd_elf_generic_reloc, /* special_function */
919 "R_PPC64_TOC16_HI", /* name */
920 false, /* partial_inplace */
921 0, /* src_mask */
922 0xffff, /* dst_mask */
923 false), /* pcrel_offset */
924
925 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
926 contents of the low 16 bits, treated as a signed number, is
927 negative. */
928
929 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
930 HOWTO (R_PPC64_TOC16_HA, /* type */
931 16, /* rightshift */
932 1, /* size (0 = byte, 1 = short, 2 = long) */
933 16, /* bitsize */
934 false, /* pc_relative */
935 0, /* bitpos */
936 complain_overflow_dont, /* complain_on_overflow */
937 ppc64_elf_addr16_ha_reloc, /* special_function */
938 "R_PPC64_TOC16_HA", /* name */
939 false, /* partial_inplace */
940 0, /* src_mask */
941 0xffff, /* dst_mask */
942 false), /* pcrel_offset */
943
944 /* 64-bit relocation; insert value of TOC base (.TOC.). */
945
946 /* R_PPC64_TOC 51 doubleword64 .TOC. */
947 HOWTO (R_PPC64_TOC, /* type */
948 0, /* rightshift */
949 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
950 64, /* bitsize */
951 false, /* pc_relative */
952 0, /* bitpos */
953 complain_overflow_bitfield, /* complain_on_overflow */
954 bfd_elf_generic_reloc, /* special_function */
955 "R_PPC64_TOC", /* name */
956 false, /* partial_inplace */
957 0, /* src_mask */
958 0xffffffffffffffff, /* dst_mask */
959 false), /* pcrel_offset */
960
961 /* Like R_PPC64_GOT16, but also informs the link editor that the
962 value to relocate may (!) refer to a PLT entry which the link
963 editor (a) may replace with the symbol value. If the link editor
964 is unable to fully resolve the symbol, it may (b) create a PLT
965 entry and store the address to the new PLT entry in the GOT.
966 This permits lazy resolution of function symbols at run time.
967 The link editor may also skip all of this and just (c) emit a
968 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
969 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
970 HOWTO (R_PPC64_PLTGOT16, /* type */
971 0, /* rightshift */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
973 16, /* bitsize */
974 false, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_signed, /* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_PPC64_PLTGOT16", /* name */
979 false, /* partial_inplace */
980 0, /* src_mask */
981 0xffff, /* dst_mask */
982 false), /* pcrel_offset */
983
984 /* Like R_PPC64_PLTGOT16, but without overflow. */
985 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
986 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
987 0, /* rightshift */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
989 16, /* bitsize */
990 false, /* pc_relative */
991 0, /* bitpos */
992 complain_overflow_dont, /* complain_on_overflow */
993 bfd_elf_generic_reloc, /* special_function */
994 "R_PPC64_PLTGOT16_LO", /* name */
995 false, /* partial_inplace */
996 0, /* src_mask */
997 0xffff, /* dst_mask */
998 false), /* pcrel_offset */
999
1000 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1001 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1002 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1003 16, /* rightshift */
1004 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 16, /* bitsize */
1006 false, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_dont, /* complain_on_overflow */
1009 bfd_elf_generic_reloc, /* special_function */
1010 "R_PPC64_PLTGOT16_HI", /* name */
1011 false, /* partial_inplace */
1012 0, /* src_mask */
1013 0xffff, /* dst_mask */
1014 false), /* pcrel_offset */
1015
1016 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1017 1 if the contents of the low 16 bits, treated as a signed number,
1018 is negative. */
1019 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1020 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1021 16, /* rightshift */
1022 1, /* size (0 = byte, 1 = short, 2 = long) */
1023 16, /* bitsize */
1024 false, /* pc_relative */
1025 0, /* bitpos */
1026 complain_overflow_dont,/* complain_on_overflow */
1027 ppc64_elf_addr16_ha_reloc, /* special_function */
1028 "R_PPC64_PLTGOT16_HA", /* name */
1029 false, /* partial_inplace */
1030 0, /* src_mask */
1031 0xffff, /* dst_mask */
1032 false), /* pcrel_offset */
1033
1034 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1035 HOWTO (R_PPC64_ADDR16_DS, /* type */
1036 0, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 16, /* bitsize */
1039 false, /* pc_relative */
1040 0, /* bitpos */
1041 complain_overflow_bitfield, /* complain_on_overflow */
1042 bfd_elf_generic_reloc, /* special_function */
1043 "R_PPC64_ADDR16_DS", /* name */
1044 false, /* partial_inplace */
1045 0, /* src_mask */
1046 0xfffc, /* dst_mask */
1047 false), /* pcrel_offset */
1048
1049 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1050 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1051 0, /* rightshift */
1052 1, /* size (0 = byte, 1 = short, 2 = long) */
1053 16, /* bitsize */
1054 false, /* pc_relative */
1055 0, /* bitpos */
1056 complain_overflow_dont,/* complain_on_overflow */
1057 bfd_elf_generic_reloc, /* special_function */
1058 "R_PPC64_ADDR16_LO_DS",/* name */
1059 false, /* partial_inplace */
1060 0, /* src_mask */
1061 0xfffc, /* dst_mask */
1062 false), /* pcrel_offset */
1063
1064 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1065 HOWTO (R_PPC64_GOT16_DS, /* type */
1066 0, /* rightshift */
1067 1, /* size (0 = byte, 1 = short, 2 = long) */
1068 16, /* bitsize */
1069 false, /* pc_relative */
1070 0, /* bitpos */
1071 complain_overflow_signed, /* complain_on_overflow */
1072 bfd_elf_generic_reloc, /* special_function */
1073 "R_PPC64_GOT16_DS", /* name */
1074 false, /* partial_inplace */
1075 0, /* src_mask */
1076 0xfffc, /* dst_mask */
1077 false), /* pcrel_offset */
1078
1079 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1080 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1081 0, /* rightshift */
1082 1, /* size (0 = byte, 1 = short, 2 = long) */
1083 16, /* bitsize */
1084 false, /* pc_relative */
1085 0, /* bitpos */
1086 complain_overflow_dont, /* complain_on_overflow */
1087 bfd_elf_generic_reloc, /* special_function */
1088 "R_PPC64_GOT16_LO_DS", /* name */
1089 false, /* partial_inplace */
1090 0, /* src_mask */
1091 0xfffc, /* dst_mask */
1092 false), /* pcrel_offset */
1093
1094 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1095 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1096 0, /* rightshift */
1097 1, /* size (0 = byte, 1 = short, 2 = long) */
1098 16, /* bitsize */
1099 false, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_dont, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_PPC64_PLT16_LO_DS", /* name */
1104 false, /* partial_inplace */
1105 0, /* src_mask */
1106 0xfffc, /* dst_mask */
1107 false), /* pcrel_offset */
1108
1109 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1110 /* FIXME: Verify R_PPC64_SECTOFF. Seems strange with size=2 and
1111 dst_mask=0. */
1112 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 32, /* bitsize */
1116 true, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_bitfield, /* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_SECTOFF_DS", /* name */
1121 false, /* partial_inplace */
1122 0, /* src_mask */
1123 0, /* dst_mask */
1124 true), /* pcrel_offset */
1125
1126 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1128 0, /* rightshift */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 false, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont, /* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_SECTOFF_LO_DS",/* name */
1136 false, /* partial_inplace */
1137 0, /* src_mask */
1138 0xfffc, /* dst_mask */
1139 false), /* pcrel_offset */
1140
1141 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_TOC16_DS, /* type */
1143 0, /* rightshift */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 16, /* bitsize */
1146 false, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_PPC64_TOC16_DS", /* name */
1151 false, /* partial_inplace */
1152 0, /* src_mask */
1153 0xfffc, /* dst_mask */
1154 false), /* pcrel_offset */
1155
1156 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1158 0, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 false, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 bfd_elf_generic_reloc, /* special_function */
1165 "R_PPC64_TOC16_LO_DS", /* name */
1166 false, /* partial_inplace */
1167 0, /* src_mask */
1168 0xfffc, /* dst_mask */
1169 false), /* pcrel_offset */
1170
1171 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1172 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1173 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1174 0, /* rightshift */
1175 1, /* size (0 = byte, 1 = short, 2 = long) */
1176 16, /* bitsize */
1177 false, /* pc_relative */
1178 0, /* bitpos */
1179 complain_overflow_signed, /* complain_on_overflow */
1180 bfd_elf_generic_reloc, /* special_function */
1181 "R_PPC64_PLTGOT16_DS", /* name */
1182 false, /* partial_inplace */
1183 0, /* src_mask */
1184 0xfffc, /* dst_mask */
1185 false), /* pcrel_offset */
1186
1187 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1188 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1189 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1190 0, /* rightshift */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 16, /* bitsize */
1193 false, /* pc_relative */
1194 0, /* bitpos */
1195 complain_overflow_dont, /* complain_on_overflow */
1196 bfd_elf_generic_reloc, /* special_function */
1197 "R_PPC64_PLTGOT16_LO_DS",/* name */
1198 false, /* partial_inplace */
1199 0, /* src_mask */
1200 0xfffc, /* dst_mask */
1201 false), /* pcrel_offset */
1202
1203 /* GNU extension to record C++ vtable hierarchy. */
1204 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1205 0, /* rightshift */
1206 0, /* size (0 = byte, 1 = short, 2 = long) */
1207 0, /* bitsize */
1208 false, /* pc_relative */
1209 0, /* bitpos */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 NULL, /* special_function */
1212 "R_PPC64_GNU_VTINHERIT", /* name */
1213 false, /* partial_inplace */
1214 0, /* src_mask */
1215 0, /* dst_mask */
1216 false), /* pcrel_offset */
1217
1218 /* GNU extension to record C++ vtable member usage. */
1219 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1220 0, /* rightshift */
1221 0, /* size (0 = byte, 1 = short, 2 = long) */
1222 0, /* bitsize */
1223 false, /* pc_relative */
1224 0, /* bitpos */
1225 complain_overflow_dont, /* complain_on_overflow */
1226 NULL, /* special_function */
1227 "R_PPC64_GNU_VTENTRY", /* name */
1228 false, /* partial_inplace */
1229 0, /* src_mask */
1230 0, /* dst_mask */
1231 false), /* pcrel_offset */
1232};
1233
1234\f
1235/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1236 be done. */
1237
1238static void
1239ppc_howto_init ()
1240{
1241 unsigned int i, type;
1242
1243 for (i = 0;
1244 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1245 i++)
1246 {
1247 type = ppc64_elf_howto_raw[i].type;
1248 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1249 / sizeof (ppc64_elf_howto_table[0])));
1250 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1251 }
1252}
1253
1254static reloc_howto_type *
1255ppc64_elf_reloc_type_lookup (abfd, code)
1256 bfd *abfd ATTRIBUTE_UNUSED;
1257 bfd_reloc_code_real_type code;
1258{
1259 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1260
1261 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1262 /* Initialize howto table if needed. */
1263 ppc_howto_init ();
1264
1265 switch ((int) code)
1266 {
1267 default:
1268 return (reloc_howto_type *) NULL;
1269
1270 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1271 break;
1272 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1273 break;
1274 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1275 break;
1276 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1277 break;
1278 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1279 break;
1280 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1281 break;
1282 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1283 break;
1284 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1285 break;
1286 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1287 break;
1288 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1289 break;
1290 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1291 break;
1292 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1293 break;
1294 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1295 break;
1296 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1297 break;
1298 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1299 break;
1300 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1301 break;
1302 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1303 break;
1304 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1305 break;
1306 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1307 break;
1308 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1309 break;
1310 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1311 break;
1312 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1313 break;
1314 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1315 break;
1316 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1317 break;
1318 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1319 break;
1320 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1321 break;
1322 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
1323 break;
1324 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1325 break;
1326 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1327 break;
1328 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1329 break;
10ed1bba 1330 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
5bd4f169
AM		 1331 break;
1332 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1333 break;
1334 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1335 break;
1336 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1337 break;
1338 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1339 break;
1340 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1341 break;
1342 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1343 break;
1344 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1345 break;
1346 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1347 break;
1348 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1349 break;
1350 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1351 break;
1352 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1353 break;
1354 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1355 break;
1356 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1357 break;
1358 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1359 break;
1360 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1361 break;
1362 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1363 break;
1364 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1365 break;
1366 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1367 break;
1368 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1369 break;
1370 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1371 break;
1372 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1373 break;
1374 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1375 break;
1376 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1377 break;
1378 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1379 break;
1380 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1381 break;
1382 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1383 break;
1384 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1385 break;
1386 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1387 break;
1388 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1389 break;
1390 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1391 break;
1392 }
1393
1394 return ppc64_elf_howto_table[(int) ppc_reloc];
1395};
1396
1397/* Set the howto pointer for a PowerPC ELF reloc. */
1398
1399static void
1400ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1401 bfd *abfd ATTRIBUTE_UNUSED;
1402 arelent *cache_ptr;
1403 Elf64_Internal_Rela *dst;
1404{
65f38f15
AM		 1405 unsigned int type;
1406
5bd4f169
AM		 1407 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1408 /* Initialize howto table if needed. */
1409 ppc_howto_init ();
1410
65f38f15
AM		 1411 type = ELF64_R_TYPE (dst->r_info);
1412 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1413 / sizeof (ppc64_elf_howto_table[0])));
1414 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 1415}
1416
65f38f15 1417/* Handle the R_PPC_ADDR16_HA and similar relocs. */
5bd4f169
AM		 1418
1419static bfd_reloc_status_type
1420ppc64_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1421 output_bfd, error_message)
1422 bfd *abfd ATTRIBUTE_UNUSED;
1423 arelent *reloc_entry;
1424 asymbol *symbol;
1425 PTR data ATTRIBUTE_UNUSED;
1426 asection *input_section;
1427 bfd *output_bfd;
1428 char **error_message ATTRIBUTE_UNUSED;
1429{
1430 bfd_vma relocation;
1431
1432 if (output_bfd != NULL)
1433 {
1434 reloc_entry->address += input_section->output_offset;
1435 return bfd_reloc_ok;
1436 }
1437
1438 if (reloc_entry->address > input_section->_cooked_size)
1439 return bfd_reloc_outofrange;
1440
1441 if (bfd_is_com_section (symbol->section))
1442 relocation = 0;
1443 else
1444 relocation = symbol->value;
1445
1446 relocation += symbol->section->output_section->vma;
1447 relocation += symbol->section->output_offset;
1448 relocation += reloc_entry->addend;
1449
1450 reloc_entry->addend += (relocation & 0x8000) << 1;
1451
1452 return bfd_reloc_continue;
1453}
1454
1455/* Function to set whether a module needs the -mrelocatable bit set. */
1456
1457static boolean
1458ppc64_elf_set_private_flags (abfd, flags)
1459 bfd *abfd;
1460 flagword flags;
1461{
1462 BFD_ASSERT (!elf_flags_init (abfd)
1463 || elf_elfheader (abfd)->e_flags == flags);
1464
1465 elf_elfheader (abfd)->e_flags = flags;
1466 elf_flags_init (abfd) = true;
1467 return true;
1468}
1469
5bd4f169
AM		 1470/* Merge backend specific data from an object file to the output
1471 object file when linking. */
1472static boolean
1473ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1474 bfd *ibfd;
1475 bfd *obfd;
1476{
1477 flagword old_flags;
1478 flagword new_flags;
1479 boolean error;
1480
1481 /* Check if we have the same endianess. */
1482 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1483 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1484 {
1485 const char *msg;
1486
1487 if (bfd_big_endian (ibfd))
1488 msg = _("%s: compiled for a big endian system and target is little endian");
1489 else
1490 msg = _("%s: compiled for a little endian system and target is big endian");
1491
8f615d07 1492 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
5bd4f169
AM		 1493
1494 bfd_set_error (bfd_error_wrong_format);
1495 return false;
1496 }
1497
1498 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1499 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1500 return true;
1501
1502 new_flags = elf_elfheader (ibfd)->e_flags;
1503 old_flags = elf_elfheader (obfd)->e_flags;
1504 if (!elf_flags_init (obfd))
1505 {
1506 /* First call, no flags set. */
1507 elf_flags_init (obfd) = true;
1508 elf_elfheader (obfd)->e_flags = new_flags;
1509 }
1510
1511 else if (new_flags == old_flags)
1512 /* Compatible flags are ok. */
1513 ;
1514
1515 else
1516 {
1517 /* Incompatible flags. Warn about -mrelocatable mismatch.
1518 Allow -mrelocatable-lib to be linked with either. */
1519 error = false;
1520 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1521 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1522 {
1523 error = true;
1524 (*_bfd_error_handler)
1525 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
8f615d07 1526 bfd_archive_filename (ibfd));
5bd4f169
AM		 1527 }
1528 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1529 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1530 {
1531 error = true;
1532 (*_bfd_error_handler)
1533 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
8f615d07 1534 bfd_archive_filename (ibfd));
5bd4f169
AM		 1535 }
1536
1537 /* The output is -mrelocatable-lib iff both the input files are. */
1538 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1539 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1540
1541 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1542 but each input file is either -mrelocatable or -mrelocatable-lib. */
1543 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1544 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1545 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1546 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1547
1548 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
1549 if any module uses it. */
1550 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1551
1552 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1553 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1554
1555 /* Warn about any other mismatches. */
1556 if (new_flags != old_flags)
1557 {
1558 error = true;
1559 (*_bfd_error_handler)
1560 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
8f615d07 1561 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
5bd4f169
AM		 1562 }
1563
1564 if (error)
1565 {
1566 bfd_set_error (bfd_error_bad_value);
1567 return false;
1568 }
1569 }
1570
1571 return true;
1572}
1573
1574/* Handle a PowerPC specific section when reading an object file. This
1575 is called when elfcode.h finds a section with an unknown type. */
1576
1577static boolean
1578ppc64_elf_section_from_shdr (abfd, hdr, name)
1579 bfd *abfd;
1580 Elf64_Internal_Shdr *hdr;
1581 char *name;
1582{
1583 asection *newsect;
1584 flagword flags;
1585
1586 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1587 return false;
1588
1589 newsect = hdr->bfd_section;
1590 flags = bfd_get_section_flags (abfd, newsect);
1591 if (hdr->sh_flags & SHF_EXCLUDE)
1592 flags |= SEC_EXCLUDE;
1593
1594 if (hdr->sh_type == SHT_ORDERED)
1595 flags |= SEC_SORT_ENTRIES;
1596
1597 bfd_set_section_flags (abfd, newsect, flags);
1598 return true;
1599}
1600\f
65f38f15
AM		 1601/* The following functions are specific to the ELF linker, while
1602 functions above are used generally. Those named ppc64_elf_* are
1603 called by the main ELF linker code. They appear in this file more
1604 or less in the order in which they are called. eg.
1605 ppc64_elf_check_relocs is called early in the link process,
1606 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 1607 called.
1608
1609 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
1610 functions have both a function code symbol and a function descriptor
1611 symbol. A call to foo in a relocatable object file looks like:
1612
1613 . .text
1614 . x:
1615 . bl .foo
1616 . nop
1617
1618 The function definition in another object file might be:
1619
1620 . .section .opd
1621 . foo: .quad .foo
1622 . .quad .TOC.@tocbase
1623 . .quad 0
1624 .
1625 . .text
1626 . .foo: blr
1627
1628 When the linker resolves the call during a static link, the branch
1629 unsurprisingly just goes to .foo and the .opd information is unused.
1630 If the function definition is in a shared library, things are a little
1631 different: The call goes via a plt call stub, the opd information gets
1632 copied to the plt, and the linker patches the nop.
1633
1634 . x:
1635 . bl .foo_stub
1636 . ld 2,40(1)
1637 .
1638 .
1639 . .foo_stub:
1640 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
1641 . addi 12,12,Lfoo@toc@l # is slightly optimised, but
1642 . std 2,40(1) # this is the general idea
1643 . ld 11,0(12)
1644 . ld 2,8(12)
1645 . mtctr 11
1646 . ld 11,16(12)
1647 . bctr
1648 .
1649 . .section .plt
1650 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
1651
1652 The "reloc ()" notation is supposed to indicate that the linker emits
1653 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
1654 copying.
1655
1656 What are the difficulties here? Well, firstly, the relocations
1657 examined by the linker in check_relocs are against the function code
1658 sym .foo, while the dynamic relocation in the plt is emitted against
1659 the function descriptor symbol, foo. Somewhere along the line, we need
1660 to carefully copy dynamic link information from one symbol to the other.
1661 Secondly, the generic part of the elf linker will make .foo a dynamic
1662 symbol as is normal for most other backends. We need foo dynamic
1663 instead, at least for an application final link. However, when
1664 creating a shared library containing foo, we need to have both symbols
1665 dynamic so that references to .foo are satisfied during the early
1666 stages of linking. Otherwise the linker might decide to pull in a
41bd81ab 1667 definition from some other object, eg. a static library. */
65f38f15
AM		 1668
1669/* The linker needs to keep track of the number of relocs that it
1670 decides to copy as dynamic relocs in check_relocs for each symbol.
1671 This is so that it can later discard them if they are found to be
1672 unnecessary. We store the information in a field extending the
1673 regular ELF linker hash table. */
1674
1675struct ppc_dyn_relocs
1676{
1677 struct ppc_dyn_relocs *next;
1678
1679 /* The input section of the reloc. */
1680 asection *sec;
1681
1682 /* Total number of relocs copied for the input section. */
1683 bfd_size_type count;
1684
1685 /* Number of pc-relative relocs copied for the input section. */
1686 bfd_size_type pc_count;
1687};
1688
1689/* Of those relocs that might be copied as dynamic relocs, this macro
1690 selects between relative and absolute types. */
1691
1692#define IS_ABSOLUTE_RELOC(RTYPE) \
1693 ((RTYPE) != R_PPC64_REL14 \
1694 && (RTYPE) != R_PPC64_REL14_BRNTAKEN \
1695 && (RTYPE) != R_PPC64_REL14_BRTAKEN \
1696 && (RTYPE) != R_PPC64_REL24 \
1697 && (RTYPE) != R_PPC64_REL32 \
1698 && (RTYPE) != R_PPC64_REL64)
1699
1700/* ppc64 ELF linker hash entry. */
1701
1702struct ppc_link_hash_entry
1703{
1704 struct elf_link_hash_entry elf;
1705
1706 /* Track dynamic relocs copied for this symbol. */
1707 struct ppc_dyn_relocs *dyn_relocs;
e86ce104
AM		 1708
1709 /* Flag function code and descriptor symbols. */
1710 unsigned int is_func:1;
1711 unsigned int is_func_descriptor:1;
65f38f15
AM		 1712};
1713
1714/* ppc64 ELF linker hash table. */
1715
1716struct ppc_link_hash_table
1717{
1718 struct elf_link_hash_table elf;
1719
1720 /* Short-cuts to get to dynamic linker sections. */
1721 asection *sgot;
1722 asection *srelgot;
1723 asection *splt;
1724 asection *srelplt;
1725 asection *sdynbss;
1726 asection *srelbss;
5d1634d7 1727 asection *sstub;
65f38f15 1728 asection *sglink;
82bd7b59 1729 asection *sfpr;
ec338859 1730
5d1634d7
AM		 1731 /* Set on error. */
1732 int plt_overflow;
1733
ec338859
AM		 1734 /* Small local sym to section mapping cache. */
1735 struct sym_sec_cache sym_sec;
65f38f15
AM		 1736};
1737
1738/* Get the ppc64 ELF linker hash table from a link_info structure. */
1739
1740#define ppc_hash_table(p) \
1741 ((struct ppc_link_hash_table *) ((p)->hash))
1742
1743/* Create an entry in a ppc64 ELF linker hash table. */
1744
1745static struct bfd_hash_entry *
1746link_hash_newfunc (entry, table, string)
1747 struct bfd_hash_entry *entry;
1748 struct bfd_hash_table *table;
1749 const char *string;
1750{
1751 /* Allocate the structure if it has not already been allocated by a
1752 subclass. */
1753 if (entry == NULL)
1754 {
1755 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
1756 if (entry == NULL)
1757 return entry;
1758 }
1759
1760 /* Call the allocation method of the superclass. */
1761 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1762 if (entry != NULL)
1763 {
1764 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
1765
1766 eh->dyn_relocs = NULL;
e86ce104
AM		 1767 eh->is_func = 0;
1768 eh->is_func_descriptor = 0;
65f38f15
AM		 1769 }
1770
1771 return entry;
1772}
1773
1774/* Create a ppc64 ELF linker hash table. */
1775
1776static struct bfd_link_hash_table *
1777ppc64_elf_link_hash_table_create (abfd)
1778 bfd *abfd;
1779{
1780 struct ppc_link_hash_table *htab;
1781 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
1782
1783 htab = (struct ppc_link_hash_table *) bfd_alloc (abfd, amt);
1784 if (htab == NULL)
1785 return NULL;
1786
1787 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
1788 {
1789 bfd_release (abfd, htab);
1790 return NULL;
1791 }
1792
1793 htab->sgot = NULL;
1794 htab->srelgot = NULL;
1795 htab->splt = NULL;
1796 htab->srelplt = NULL;
1797 htab->sdynbss = NULL;
1798 htab->srelbss = NULL;
5d1634d7 1799 htab->sstub = NULL;
65f38f15 1800 htab->sglink = NULL;
82bd7b59 1801 htab->sfpr = NULL;
5d1634d7 1802 htab->plt_overflow = 0;
ec338859 1803 htab->sym_sec.abfd = NULL;
65f38f15
AM		 1804
1805 return &htab->elf.root;
1806}
1807
82bd7b59
AM		 1808/* Create sections for linker generated code. */
1809
1810static boolean
1811create_linkage_sections (dynobj, info)
1812 bfd *dynobj;
1813 struct bfd_link_info *info;
1814{
1815 struct ppc_link_hash_table *htab;
1816 flagword flags;
1817
1818 htab = ppc_hash_table (info);
1819
1820 /* Create .sfpr for code to save and restore fp regs. */
1821 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
1822 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1823 htab->sfpr = bfd_make_section (dynobj, ".sfpr");
1824 if (htab->sfpr == NULL
1825 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
1826 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
1827 return false;
1828
1829 /* Create .stub and .glink for global linkage functions. */
1830 htab->sstub = bfd_make_section (dynobj, ".stub");
1831 if (htab->sstub == NULL
1832 || ! bfd_set_section_flags (dynobj, htab->sstub, flags)
1833 || ! bfd_set_section_alignment (dynobj, htab->sstub, 2))
1834 return false;
1835 htab->sglink = bfd_make_section (dynobj, ".glink");
1836 if (htab->sglink == NULL
1837 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
1838 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
1839 return false;
1840
1841 return true;
1842}
1843
65f38f15
AM		 1844/* Create .got and .rela.got sections in DYNOBJ, and set up
1845 shortcuts to them in our hash table. */
1846
1847static boolean
1848create_got_section (dynobj, info)
1849 bfd *dynobj;
1850 struct bfd_link_info *info;
1851{
1852 struct ppc_link_hash_table *htab;
1853
1854 if (! _bfd_elf_create_got_section (dynobj, info))
1855 return false;
1856
1857 htab = ppc_hash_table (info);
1858 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1859 if (!htab->sgot)
1860 abort ();
1861
1862 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
1863 if (!htab->srelgot
1864 || ! bfd_set_section_flags (dynobj, htab->srelgot,
1865 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1866 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1867 | SEC_READONLY))
1868 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
1869 return false;
1870 return true;
1871}
5bd4f169 1872
82bd7b59 1873/* Create the dynamic sections, and set up shortcuts. */
5bd4f169
AM		 1874
1875static boolean
65f38f15
AM		 1876ppc64_elf_create_dynamic_sections (dynobj, info)
1877 bfd *dynobj;
5bd4f169
AM		 1878 struct bfd_link_info *info;
1879{
65f38f15 1880 struct ppc_link_hash_table *htab;
5bd4f169 1881
65f38f15
AM		 1882 htab = ppc_hash_table (info);
1883 if (!htab->sgot && !create_got_section (dynobj, info))
5bd4f169
AM		 1884 return false;
1885
65f38f15 1886 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
5bd4f169 1887 return false;
65f38f15
AM		 1888
1889 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1890 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
1891 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1892 if (!info->shared)
1893 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
1894
1895 if (!htab->splt || !htab->srelplt || !htab->sdynbss
1896 || (!info->shared && !htab->srelbss))
1897 abort ();
1898
5bd4f169
AM		 1899 return true;
1900}
1901
65f38f15
AM		 1902/* Copy the extra info we tack onto an elf_link_hash_entry. */
1903
1904static void
1905ppc64_elf_copy_indirect_symbol (dir, ind)
1906 struct elf_link_hash_entry *dir, *ind;
1907{
1908 struct ppc_link_hash_entry *edir, *eind;
1909
1910 edir = (struct ppc_link_hash_entry *) dir;
1911 eind = (struct ppc_link_hash_entry *) ind;
1912
bbd7ec4a 1913 if (eind->dyn_relocs != NULL)
65f38f15 1914 {
bbd7ec4a
AM		 1915 if (edir->dyn_relocs != NULL)
1916 {
1917 struct ppc_dyn_relocs **pp;
1918 struct ppc_dyn_relocs *p;
1919
1e370bd2 1920 if (ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 1921 abort ();
1922
1923 /* Add reloc counts against the weak sym to the strong sym
1924 list. Merge any entries against the same section. */
1925 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1926 {
1927 struct ppc_dyn_relocs *q;
1928
1929 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1930 if (q->sec == p->sec)
1931 {
1932 q->pc_count += p->pc_count;
1933 q->count += p->count;
1934 *pp = p->next;
1935 break;
1936 }
1937 if (q == NULL)
1938 pp = &p->next;
1939 }
1940 *pp = edir->dyn_relocs;
1941 }
1942
65f38f15
AM		 1943 edir->dyn_relocs = eind->dyn_relocs;
1944 eind->dyn_relocs = NULL;
1945 }
65f38f15 1946
e86ce104
AM		 1947 edir->is_func |= eind->is_func;
1948 edir->is_func_descriptor |= eind->is_func_descriptor;
1949
65f38f15
AM		 1950 _bfd_elf_link_hash_copy_indirect (dir, ind);
1951}
1952
5bd4f169 1953/* Look through the relocs for a section during the first phase, and
65f38f15 1954 calculate needed space in the global offset table, procedure
5d1634d7 1955 linkage table, and dynamic reloc sections. */
5bd4f169
AM		 1956
1957static boolean
1958ppc64_elf_check_relocs (abfd, info, sec, relocs)
1959 bfd *abfd;
1960 struct bfd_link_info *info;
1961 asection *sec;
1962 const Elf_Internal_Rela *relocs;
1963{
65f38f15 1964 struct ppc_link_hash_table *htab;
5bd4f169
AM		 1965 Elf_Internal_Shdr *symtab_hdr;
1966 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
1967 const Elf_Internal_Rela *rel;
1968 const Elf_Internal_Rela *rel_end;
5bd4f169 1969 asection *sreloc;
e86ce104 1970 boolean is_opd;
5bd4f169
AM		 1971
1972 if (info->relocateable)
1973 return true;
1974
65f38f15 1975 htab = ppc_hash_table (info);
5bd4f169 1976 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 1977
1978 sym_hashes = elf_sym_hashes (abfd);
1979 sym_hashes_end = (sym_hashes
1980 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
1981 if (!elf_bad_symtab (abfd))
1982 sym_hashes_end -= symtab_hdr->sh_info;
1983
1984 sreloc = NULL;
e86ce104 1985 is_opd = strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0;
5bd4f169 1986
82bd7b59
AM		 1987 if (htab->elf.dynobj == NULL)
1988 htab->elf.dynobj = abfd;
1989 if (htab->sfpr == NULL
1990 && !create_linkage_sections (htab->elf.dynobj, info))
1991 return false;
1992
5bd4f169
AM		 1993 rel_end = relocs + sec->reloc_count;
1994 for (rel = relocs; rel < rel_end; rel++)
1995 {
1996 unsigned long r_symndx;
1997 struct elf_link_hash_entry *h;
a33d1f77 1998 enum elf_ppc_reloc_type r_type;
5bd4f169
AM		 1999
2000 r_symndx = ELF64_R_SYM (rel->r_info);
2001 if (r_symndx < symtab_hdr->sh_info)
2002 h = NULL;
2003 else
2004 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2005
a33d1f77
AM		 2006 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2007 switch (r_type)
5bd4f169
AM		 2008 {
2009 /* GOT16 relocations */
2010 case R_PPC64_GOT16:
5bd4f169 2011 case R_PPC64_GOT16_DS:
65f38f15
AM		 2012 case R_PPC64_GOT16_HA:
2013 case R_PPC64_GOT16_HI:
2014 case R_PPC64_GOT16_LO:
5bd4f169 2015 case R_PPC64_GOT16_LO_DS:
5bd4f169 2016
65f38f15 2017 /* This symbol requires a global offset table entry. */
82bd7b59
AM		 2018 if (htab->sgot == NULL
2019 && !create_got_section (htab->elf.dynobj, info))
2020 return false;
5bd4f169
AM		 2021
2022 if (h != NULL)
2023 {
65f38f15 2024 h->got.refcount += 1;
5bd4f169
AM		 2025 }
2026 else
2027 {
65f38f15
AM		 2028 bfd_signed_vma *local_got_refcounts;
2029
5bd4f169 2030 /* This is a global offset table entry for a local symbol. */
65f38f15 2031 local_got_refcounts = elf_local_got_refcounts (abfd);
5bd4f169
AM		 2032 if (local_got_refcounts == NULL)
2033 {
dc810e39 2034 bfd_size_type size;
5bd4f169 2035
dc810e39
AM		 2036 size = symtab_hdr->sh_info;
2037 size *= sizeof (bfd_signed_vma);
2038 local_got_refcounts = ((bfd_signed_vma *)
65f38f15 2039 bfd_zalloc (abfd, size));
5bd4f169
AM		 2040 if (local_got_refcounts == NULL)
2041 return false;
2042 elf_local_got_refcounts (abfd) = local_got_refcounts;
5bd4f169 2043 }
65f38f15 2044 local_got_refcounts[r_symndx] += 1;
5bd4f169
AM		 2045 }
2046 break;
2047
5bd4f169 2048 case R_PPC64_PLT16_HA:
65f38f15
AM		 2049 case R_PPC64_PLT16_HI:
2050 case R_PPC64_PLT16_LO:
2051 case R_PPC64_PLT32:
2052 case R_PPC64_PLT64:
5bd4f169
AM		 2053 /* This symbol requires a procedure linkage table entry. We
2054 actually build the entry in adjust_dynamic_symbol,
2055 because this might be a case of linking PIC code without
2056 linking in any dynamic objects, in which case we don't
2057 need to generate a procedure linkage table after all. */
5bd4f169
AM		 2058 if (h == NULL)
2059 {
2060 /* It does not make sense to have a procedure linkage
2061 table entry for a local symbol. */
2062 bfd_set_error (bfd_error_bad_value);
2063 return false;
2064 }
2065
65f38f15
AM		 2066 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2067 h->plt.refcount += 1;
e86ce104 2068 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5bd4f169
AM		 2069 break;
2070
2071 /* The following relocations don't need to propagate the
2072 relocation if linking a shared object since they are
2073 section relative. */
2074 case R_PPC64_SECTOFF:
2075 case R_PPC64_SECTOFF_LO:
2076 case R_PPC64_SECTOFF_HI:
2077 case R_PPC64_SECTOFF_HA:
2078 case R_PPC64_SECTOFF_DS:
2079 case R_PPC64_SECTOFF_LO_DS:
2080 case R_PPC64_TOC16:
2081 case R_PPC64_TOC16_LO:
2082 case R_PPC64_TOC16_HI:
2083 case R_PPC64_TOC16_HA:
2084 case R_PPC64_TOC16_DS:
2085 case R_PPC64_TOC16_LO_DS:
2086 break;
2087
2088 /* This relocation describes the C++ object vtable hierarchy.
2089 Reconstruct it for later use during GC. */
2090 case R_PPC64_GNU_VTINHERIT:
2091 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2092 return false;
2093 break;
2094
2095 /* This relocation describes which C++ vtable entries are actually
2096 used. Record for later use during GC. */
2097 case R_PPC64_GNU_VTENTRY:
2098 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2099 return false;
2100 break;
2101
5d1634d7 2102 case R_PPC64_REL24:
e86ce104
AM		 2103 if (h != NULL
2104 && h->root.root.string[0] == '.'
2105 && h->root.root.string[1] != 0)
5d1634d7
AM		 2106 {
2107 /* We may need a .plt entry if the function this reloc
2108 refers to is in a shared lib. */
2109 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2110 h->plt.refcount += 1;
e86ce104 2111 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5d1634d7
AM		 2112 }
2113 break;
2114
e86ce104
AM		 2115 case R_PPC64_ADDR64:
2116 if (is_opd
2117 && h != NULL
2118 && h->root.root.string[0] == '.'
2119 && h->root.root.string[1] != 0)
2120 {
2121 struct elf_link_hash_entry *fdh;
2122
2123 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
2124 false, false, false);
2125 if (fdh != NULL)
2126 {
2127 /* Ensure the function descriptor symbol string is
2128 part of the code symbol string. We aren't
2129 changing the name here, just allowing some tricks
2130 in ppc64_elf_hide_symbol. */
2131 fdh->root.root.string = h->root.root.string + 1;
2132 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
2133 ((struct ppc_link_hash_entry *) h)->is_func = 1;
2134 }
2135 }
2136 /* Fall through. */
2137
5bd4f169
AM		 2138 case R_PPC64_REL64:
2139 case R_PPC64_REL32:
5bd4f169
AM		 2140 case R_PPC64_REL14:
2141 case R_PPC64_REL14_BRTAKEN:
2142 case R_PPC64_REL14_BRNTAKEN:
65f38f15
AM		 2143 case R_PPC64_ADDR14:
2144 case R_PPC64_ADDR14_BRNTAKEN:
2145 case R_PPC64_ADDR14_BRTAKEN:
2146 case R_PPC64_ADDR16:
2147 case R_PPC64_ADDR16_DS:
2148 case R_PPC64_ADDR16_HA:
2149 case R_PPC64_ADDR16_HI:
2150 case R_PPC64_ADDR16_HIGHER:
2151 case R_PPC64_ADDR16_HIGHERA:
2152 case R_PPC64_ADDR16_HIGHEST:
2153 case R_PPC64_ADDR16_HIGHESTA:
2154 case R_PPC64_ADDR16_LO:
2155 case R_PPC64_ADDR16_LO_DS:
2156 case R_PPC64_ADDR24:
2157 case R_PPC64_ADDR30:
2158 case R_PPC64_ADDR32:
65f38f15
AM		 2159 case R_PPC64_UADDR16:
2160 case R_PPC64_UADDR32:
2161 case R_PPC64_UADDR64:
5bd4f169 2162 case R_PPC64_TOC:
41bd81ab
AM		 2163 /* Don't propagate .opd relocs. */
2164 if (NO_OPD_RELOCS && is_opd)
e86ce104 2165 break;
e86ce104 2166
65f38f15
AM		 2167 /* If we are creating a shared library, and this is a reloc
2168 against a global symbol, or a non PC relative reloc
2169 against a local symbol, then we need to copy the reloc
2170 into the shared library. However, if we are linking with
2171 -Bsymbolic, we do not need to copy a reloc against a
2172 global symbol which is defined in an object we are
2173 including in the link (i.e., DEF_REGULAR is set). At
2174 this point we have not seen all the input files, so it is
2175 possible that DEF_REGULAR is not set now but will be set
2176 later (it is never cleared). In case of a weak definition,
2177 DEF_REGULAR may be cleared later by a strong definition in
2178 a shared library. We account for that possibility below by
2179 storing information in the relocs_copied field of the hash
2180 table entry. A similar situation occurs when creating
2181 shared libraries and symbol visibility changes render the
2182 symbol local.
2183
2184 If on the other hand, we are creating an executable, we
2185 may need to keep relocations for symbols satisfied by a
2186 dynamic library if we manage to avoid copy relocs for the
2187 symbol. */
2188 if ((info->shared
2189 && (sec->flags & SEC_ALLOC) != 0
a33d1f77 2190 && (IS_ABSOLUTE_RELOC (r_type)
65f38f15
AM		 2191 || (h != NULL
2192 && (! info->symbolic
2193 || h->root.type == bfd_link_hash_defweak
2194 || (h->elf_link_hash_flags
2195 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2196 || (!info->shared
2197 && (sec->flags & SEC_ALLOC) != 0
2198 && h != NULL
2199 && (h->root.type == bfd_link_hash_defweak
2200 || (h->elf_link_hash_flags
2201 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 2202 {
ec338859
AM		 2203 struct ppc_dyn_relocs *p;
2204 struct ppc_dyn_relocs **head;
2205
65f38f15
AM		 2206 /* We must copy these reloc types into the output file.
2207 Create a reloc section in dynobj and make room for
2208 this reloc. */
5bd4f169
AM		 2209 if (sreloc == NULL)
2210 {
2211 const char *name;
65f38f15 2212 bfd *dynobj;
5bd4f169
AM		 2213
2214 name = (bfd_elf_string_from_elf_section
2215 (abfd,
2216 elf_elfheader (abfd)->e_shstrndx,
2217 elf_section_data (sec)->rel_hdr.sh_name));
2218 if (name == NULL)
2219 return false;
2220
65f38f15
AM		 2221 if (strncmp (name, ".rela", 5) != 0
2222 || strcmp (bfd_get_section_name (abfd, sec),
2223 name + 5) != 0)
2224 {
2225 (*_bfd_error_handler)
2226 (_("%s: bad relocation section name `%s\'"),
2227 bfd_archive_filename (abfd), name);
5d1634d7 2228 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 2229 }
2230
65f38f15 2231 dynobj = htab->elf.dynobj;
5bd4f169
AM		 2232 sreloc = bfd_get_section_by_name (dynobj, name);
2233 if (sreloc == NULL)
2234 {
2235 flagword flags;
2236
2237 sreloc = bfd_make_section (dynobj, name);
2238 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2239 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2240 if ((sec->flags & SEC_ALLOC) != 0)
2241 flags |= SEC_ALLOC | SEC_LOAD;
2242 if (sreloc == NULL
2243 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 2244 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
5bd4f169
AM		 2245 return false;
2246 }
65f38f15 2247 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 2248 }
2249
65f38f15
AM		 2250 /* If this is a global symbol, we count the number of
2251 relocations we need for this symbol. */
2252 if (h != NULL)
2253 {
ec338859 2254 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 2255 }
2256 else
2257 {
ec338859
AM		 2258 /* Track dynamic relocs needed for local syms too.
2259 We really need local syms available to do this
2260 easily. Oh well. */
2261
2262 asection *s;
2263 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2264 sec, r_symndx);
2265 if (s == NULL)
2266 return false;
2267
2268 head = ((struct ppc_dyn_relocs **)
2269 &elf_section_data (s)->local_dynrel);
65f38f15 2270 }
ec338859
AM		 2271
2272 p = *head;
2273 if (p == NULL || p->sec != sec)
2274 {
2275 p = ((struct ppc_dyn_relocs *)
2276 bfd_alloc (htab->elf.dynobj,
2277 (bfd_size_type) sizeof *p));
2278 if (p == NULL)
2279 return false;
2280 p->next = *head;
2281 *head = p;
2282 p->sec = sec;
2283 p->count = 0;
2284 p->pc_count = 0;
2285 }
2286
2287 p->count += 1;
2288 if (!IS_ABSOLUTE_RELOC (r_type))
2289 p->pc_count += 1;
65f38f15 2290 }
5bd4f169 2291 break;
65f38f15
AM		 2292
2293 default:
96e0dda4 2294 break;
5bd4f169
AM		 2295 }
2296 }
2297
2298 return true;
2299}
2300
2301/* Return the section that should be marked against GC for a given
2302 relocation. */
2303
2304static asection *
2305ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
2306 bfd *abfd;
2307 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2308 Elf_Internal_Rela *rel;
2309 struct elf_link_hash_entry *h;
2310 Elf_Internal_Sym *sym;
2311{
2312 if (h != NULL)
2313 {
a33d1f77
AM		 2314 enum elf_ppc_reloc_type r_type;
2315
2316 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2317 switch (r_type)
5bd4f169
AM		 2318 {
2319 case R_PPC64_GNU_VTINHERIT:
2320 case R_PPC64_GNU_VTENTRY:
2321 break;
2322
2323 default:
2324 switch (h->root.type)
2325 {
2326 case bfd_link_hash_defined:
2327 case bfd_link_hash_defweak:
2328 return h->root.u.def.section;
2329
2330 case bfd_link_hash_common:
2331 return h->root.u.c.p->section;
2332
2333 default:
2334 break;
2335 }
2336 }
2337 }
2338 else
2339 {
9ad5cbcf 2340 return bfd_section_from_elf_index (abfd, sym->st_shndx);
5bd4f169
AM		 2341 }
2342
2343 return NULL;
2344}
2345
65f38f15
AM		 2346/* Update the .got, .plt. and dynamic reloc reference counts for the
2347 section being removed. */
5bd4f169
AM		 2348
2349static boolean
2350ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2351 bfd *abfd;
2352 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2353 asection *sec;
2354 const Elf_Internal_Rela *relocs;
2355{
2356 Elf_Internal_Shdr *symtab_hdr;
2357 struct elf_link_hash_entry **sym_hashes;
2358 bfd_signed_vma *local_got_refcounts;
2359 const Elf_Internal_Rela *rel, *relend;
5bd4f169 2360
ec338859
AM		 2361 elf_section_data (sec)->local_dynrel = NULL;
2362
5bd4f169
AM		 2363 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2364 sym_hashes = elf_sym_hashes (abfd);
2365 local_got_refcounts = elf_local_got_refcounts (abfd);
2366
2367 relend = relocs + sec->reloc_count;
2368 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 2369 {
2370 unsigned long r_symndx;
2371 enum elf_ppc_reloc_type r_type;
2372 struct elf_link_hash_entry *h;
5bd4f169 2373
a33d1f77
AM		 2374 r_symndx = ELF64_R_SYM (rel->r_info);
2375 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2376 switch (r_type)
2377 {
2378 case R_PPC64_GOT16:
2379 case R_PPC64_GOT16_DS:
2380 case R_PPC64_GOT16_HA:
2381 case R_PPC64_GOT16_HI:
2382 case R_PPC64_GOT16_LO:
2383 case R_PPC64_GOT16_LO_DS:
2384 if (r_symndx >= symtab_hdr->sh_info)
2385 {
2386 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2387 if (h->got.refcount > 0)
2388 h->got.refcount--;
2389 }
2390 else
2391 {
2392 if (local_got_refcounts[r_symndx] > 0)
2393 local_got_refcounts[r_symndx]--;
2394 }
2395 break;
65f38f15 2396
a33d1f77
AM		 2397 case R_PPC64_PLT16_HA:
2398 case R_PPC64_PLT16_HI:
2399 case R_PPC64_PLT16_LO:
2400 case R_PPC64_PLT32:
2401 case R_PPC64_PLT64:
2402 if (r_symndx >= symtab_hdr->sh_info)
2403 {
2404 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2405 if (h->plt.refcount > 0)
2406 h->plt.refcount--;
2407 }
2408 break;
65f38f15 2409
5d1634d7
AM		 2410 case R_PPC64_REL24:
2411 if (r_symndx >= symtab_hdr->sh_info)
2412 {
2413 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2414 if (h->plt.refcount > 0)
2415 h->plt.refcount--;
2416 }
e86ce104 2417 break;
5d1634d7 2418
a33d1f77
AM		 2419 case R_PPC64_REL14:
2420 case R_PPC64_REL14_BRNTAKEN:
2421 case R_PPC64_REL14_BRTAKEN:
a33d1f77
AM		 2422 case R_PPC64_REL32:
2423 case R_PPC64_REL64:
2424 if (r_symndx >= symtab_hdr->sh_info)
2425 {
2426 struct ppc_link_hash_entry *eh;
2427 struct ppc_dyn_relocs **pp;
2428 struct ppc_dyn_relocs *p;
65f38f15 2429
a33d1f77
AM		 2430 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2431 eh = (struct ppc_link_hash_entry *) h;
65f38f15 2432
a33d1f77
AM		 2433 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2434 if (p->sec == sec)
2435 {
2436 p->pc_count -= 1;
2437 p->count -= 1;
2438 if (p->count == 0)
2439 *pp = p->next;
2440 break;
2441 }
2442 }
2443 break;
65f38f15 2444
a33d1f77
AM		 2445 case R_PPC64_ADDR14:
2446 case R_PPC64_ADDR14_BRNTAKEN:
2447 case R_PPC64_ADDR14_BRTAKEN:
2448 case R_PPC64_ADDR16:
2449 case R_PPC64_ADDR16_DS:
2450 case R_PPC64_ADDR16_HA:
2451 case R_PPC64_ADDR16_HI:
2452 case R_PPC64_ADDR16_HIGHER:
2453 case R_PPC64_ADDR16_HIGHERA:
2454 case R_PPC64_ADDR16_HIGHEST:
2455 case R_PPC64_ADDR16_HIGHESTA:
2456 case R_PPC64_ADDR16_LO:
2457 case R_PPC64_ADDR16_LO_DS:
2458 case R_PPC64_ADDR24:
2459 case R_PPC64_ADDR30:
2460 case R_PPC64_ADDR32:
2461 case R_PPC64_ADDR64:
2462 case R_PPC64_UADDR16:
2463 case R_PPC64_UADDR32:
2464 case R_PPC64_UADDR64:
2465 case R_PPC64_TOC:
2466 if (r_symndx >= symtab_hdr->sh_info)
2467 {
2468 struct ppc_link_hash_entry *eh;
2469 struct ppc_dyn_relocs **pp;
2470 struct ppc_dyn_relocs *p;
65f38f15 2471
a33d1f77
AM		 2472 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2473 eh = (struct ppc_link_hash_entry *) h;
2474
2475 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2476 if (p->sec == sec)
2477 {
2478 p->count -= 1;
2479 if (p->count == 0)
2480 *pp = p->next;
2481 break;
2482 }
2483 }
2484 break;
5bd4f169 2485
a33d1f77
AM		 2486 default:
2487 break;
2488 }
2489 }
5bd4f169
AM		 2490 return true;
2491}
2492
e86ce104
AM		 2493/* Called via elf_link_hash_traverse to transfer dynamic linking
2494 information on function code symbol entries to their corresponding
2495 function descriptor symbol entries. */
5bd4f169 2496static boolean
e86ce104 2497func_desc_adjust (h, inf)
5bd4f169 2498 struct elf_link_hash_entry *h;
e86ce104 2499 PTR inf;
5bd4f169 2500{
e86ce104 2501 struct bfd_link_info *info;
65f38f15 2502 struct ppc_link_hash_table *htab;
5bd4f169 2503
e86ce104
AM		 2504 if (h->root.type == bfd_link_hash_indirect
2505 || h->root.type == bfd_link_hash_warning)
2506 return true;
2507
2508 info = (struct bfd_link_info *) inf;
65f38f15 2509 htab = ppc_hash_table (info);
5bd4f169 2510
e86ce104
AM		 2511 /* If this is a function code symbol, transfer dynamic linking
2512 information to the function descriptor symbol. */
2513 if (!((struct ppc_link_hash_entry *) h)->is_func)
2514 return true;
2515
2516 if (h->plt.refcount > 0
2517 && h->root.root.string[0] == '.'
2518 && h->root.root.string[1] != '\0')
5bd4f169 2519 {
65f38f15 2520 struct elf_link_hash_entry *fdh;
e86ce104 2521 boolean force_local;
5bd4f169 2522
648cca2c
AM		 2523 /* Find the corresponding function descriptor symbol. Create it
2524 as undefined if necessary. */
5bd4f169 2525
e86ce104
AM		 2526 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
2527 false, false, true);
5bd4f169 2528
d926e03d
AM		 2529 if (fdh == NULL
2530 && info->shared
2531 && (h->root.type == bfd_link_hash_undefined
2532 || h->root.type == bfd_link_hash_undefweak))
648cca2c
AM		 2533 {
2534 bfd *abfd;
2535 asymbol *newsym;
2536
d926e03d 2537 abfd = h->root.u.undef.abfd;
648cca2c
AM		 2538 newsym = bfd_make_empty_symbol (abfd);
2539 newsym->name = h->root.root.string + 1;
2540 newsym->section = bfd_und_section_ptr;
2541 newsym->value = 0;
2542 newsym->flags = BSF_OBJECT;
2543 if (h->root.type == bfd_link_hash_undefweak)
2544 newsym->flags |= BSF_WEAK;
2545
2546 if ( !(_bfd_generic_link_add_one_symbol
2547 (info, abfd, newsym->name, newsym->flags,
2548 newsym->section, newsym->value, NULL, false, false,
2549 (struct bfd_link_hash_entry **) &fdh)))
2550 {
2551 return false;
2552 }
d926e03d 2553 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
648cca2c
AM		 2554 }
2555
e86ce104
AM		 2556 if (fdh != NULL
2557 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2558 && (info->shared
2559 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2560 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
2561 {
2562 if (fdh->dynindx == -1)
2563 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
2564 return false;
e86ce104
AM		 2565 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
2566 & (ELF_LINK_HASH_REF_REGULAR
2567 | ELF_LINK_HASH_REF_DYNAMIC
2568 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
2569 | ELF_LINK_NON_GOT_REF));
e1fa50e7
AM		 2570 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2571 {
2572 fdh->plt.refcount = h->plt.refcount;
2573 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2574 }
e86ce104
AM		 2575 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
2576 fdh->root.root.string = h->root.root.string + 1;
2577 }
2578
2579 /* Now that the info is on the function descriptor, clear the
2580 function code sym info. Any function code syms for which we
2581 don't have a definition in a regular file, we force local.
2582 This prevents a shared library from exporting syms that have
2583 been imported from another library. Function code syms that
2584 are really in the library we must leave global to prevent the
e1fa50e7 2585 linker dragging in a definition from a static library. */
82bd7b59
AM		 2586 force_local = ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
2587 && info->shared);
e86ce104
AM		 2588 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2589 }
2590
2591 return true;
2592}
40b8271b 2593
82bd7b59
AM		 2594#define MIN_SAVE_FPR 14
2595#define MAX_SAVE_FPR 31
2596
e86ce104 2597/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 2598 this hook to a) provide some gcc support functions, and b) transfer
2599 dynamic linking information gathered so far on function code symbol
2600 entries, to their corresponding function descriptor symbol entries. */
e86ce104
AM		 2601static boolean
2602ppc64_elf_func_desc_adjust (obfd, info)
2603 bfd *obfd ATTRIBUTE_UNUSED;
2604 struct bfd_link_info *info;
2605{
2606 struct ppc_link_hash_table *htab;
82bd7b59
AM		 2607 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
2608 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
2609 unsigned int i;
2610 struct elf_link_hash_entry *h;
2611 char sym[10];
e86ce104
AM		 2612
2613 htab = ppc_hash_table (info);
82bd7b59
AM		 2614
2615 if (htab->sfpr == NULL)
2616 /* We don't have any relocs. */
2617 return true;
2618
2619 /* First provide any missing ._savef* and ._restf* functions. */
2620 memcpy (sym, "._savef14", 10);
2621 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
2622 {
2623 sym[7] = i / 10 + '0';
2624 sym[8] = i % 10 + '0';
2625 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
2626 if (h != NULL
2627 && h->root.type == bfd_link_hash_undefined)
2628 {
2629 if (lowest_savef > i)
2630 lowest_savef = i;
2631 h->root.type = bfd_link_hash_defined;
2632 h->root.u.def.section = htab->sfpr;
2633 h->root.u.def.value = (i - lowest_savef) * 4;
2634 h->type = STT_FUNC;
2635 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2636 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
2637 }
2638 }
2639
2640 memcpy (sym, "._restf14", 10);
2641 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
2642 {
2643 sym[7] = i / 10 + '0';
2644 sym[8] = i % 10 + '0';
2645 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
2646 if (h != NULL
2647 && h->root.type == bfd_link_hash_undefined)
2648 {
2649 if (lowest_restf > i)
2650 lowest_restf = i;
2651 h->root.type = bfd_link_hash_defined;
2652 h->root.u.def.section = htab->sfpr;
2653 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
2654 + (i - lowest_restf) * 4);
2655 h->type = STT_FUNC;
2656 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
2657 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
2658 }
2659 }
2660
2661 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
2662 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
2663
2664 if (htab->sfpr->_raw_size == 0)
2665 {
2666 _bfd_strip_section_from_output (info, htab->sfpr);
2667 }
2668 else
2669 {
2670 bfd_byte *p = (bfd_byte *) bfd_alloc (htab->elf.dynobj,
2671 htab->sfpr->_raw_size);
2672 if (p == NULL)
2673 return false;
2674 htab->sfpr->contents = p;
2675
2676 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
2677 {
2678 unsigned int fpr = i << 21;
2679 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
2680 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
2681 p += 4;
2682 }
2683 bfd_put_32 (htab->elf.dynobj, BLR, p);
2684 p += 4;
2685
2686 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
2687 {
2688 unsigned int fpr = i << 21;
2689 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
2690 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
2691 p += 4;
2692 }
2693 bfd_put_32 (htab->elf.dynobj, BLR, p);
2694 p += 4;
2695 }
2696
e86ce104
AM		 2697 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
2698 return true;
2699}
2700
2701/* Adjust a symbol defined by a dynamic object and referenced by a
2702 regular object. The current definition is in some section of the
2703 dynamic object, but we're not including those sections. We have to
2704 change the definition to something the rest of the link can
2705 understand. */
2706
2707static boolean
2708ppc64_elf_adjust_dynamic_symbol (info, h)
2709 struct bfd_link_info *info;
2710 struct elf_link_hash_entry *h;
2711{
2712 struct ppc_link_hash_table *htab;
2713 struct ppc_link_hash_entry * eh;
2714 struct ppc_dyn_relocs *p;
2715 asection *s;
2716 unsigned int power_of_two;
2717
2718 htab = ppc_hash_table (info);
2719
2720 /* Deal with function syms. */
2721 if (h->type == STT_FUNC
2722 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2723 {
2724 /* Clear procedure linkage table information for any symbol that
2725 won't need a .plt entry. */
2726 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
2727 || h->plt.refcount <= 0
2728 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2729 || (! info->shared
2730 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2731 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
40b8271b 2732 {
40b8271b
AM		 2733 h->plt.offset = (bfd_vma) -1;
2734 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
40b8271b 2735 }
5bd4f169
AM		 2736 return true;
2737 }
bbd7ec4a
AM		 2738 else
2739 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 2740
2741 /* If this is a weak symbol, and there is a real definition, the
2742 processor independent code will have arranged for us to see the
2743 real definition first, and we can just use the same value. */
2744 if (h->weakdef != NULL)
2745 {
2746 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2747 || h->weakdef->root.type == bfd_link_hash_defweak);
2748 h->root.u.def.section = h->weakdef->root.u.def.section;
2749 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 2750 return true;
5bd4f169
AM		 2751 }
2752
2753 /* This is a reference to a symbol defined by a dynamic object which
2754 is not a function. */
2755
2756 /* If we are creating a shared library, we must presume that the
2757 only references to the symbol are via the global offset table.
2758 For such cases we need not do anything here; the relocations will
2759 be handled correctly by relocate_section. */
2760 if (info->shared)
2761 return true;
2762
65f38f15
AM		 2763 /* If there are no references to this symbol that do not use the
2764 GOT, we don't need to generate a copy reloc. */
2765 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
2766 return true;
2767
2768 eh = (struct ppc_link_hash_entry *) h;
2769 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2770 {
2771 s = p->sec->output_section;
2772 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2773 break;
2774 }
2775
2776 /* If we didn't find any dynamic relocs in read-only sections, then
5d1634d7 2777 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
65f38f15
AM		 2778 if (p == NULL)
2779 {
2780 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
2781 return true;
2782 }
2783
5bd4f169
AM		 2784 /* We must allocate the symbol in our .dynbss section, which will
2785 become part of the .bss section of the executable. There will be
2786 an entry for this symbol in the .dynsym section. The dynamic
2787 object will contain position independent code, so all references
2788 from the dynamic object to this symbol will go through the global
2789 offset table. The dynamic linker will use the .dynsym entry to
2790 determine the address it must put in the global offset table, so
2791 both the dynamic object and the regular object will refer to the
2792 same memory location for the variable. */
5bd4f169
AM		 2793
2794 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2795 copy the initial value out of the dynamic object and into the
2796 runtime process image. We need to remember the offset into the
2797 .rela.bss section we are going to use. */
2798 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2799 {
65f38f15 2800 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 2801 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2802 }
2803
2804 /* We need to figure out the alignment required for this symbol. I
2805 have no idea how ELF linkers handle this. */
2806 power_of_two = bfd_log2 (h->size);
2807 if (power_of_two > 4)
2808 power_of_two = 4;
2809
2810 /* Apply the required alignment. */
65f38f15
AM		 2811 s = htab->sdynbss;
2812 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
2813 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 2814 {
65f38f15 2815 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 2816 return false;
2817 }
2818
2819 /* Define the symbol as being at this point in the section. */
2820 h->root.u.def.section = s;
2821 h->root.u.def.value = s->_raw_size;
2822
2823 /* Increment the section size to make room for the symbol. */
2824 s->_raw_size += h->size;
2825
2826 return true;
2827}
2828
e86ce104
AM		 2829/* If given a function descriptor symbol, hide both the function code
2830 sym and the descriptor. */
2831static void
2832ppc64_elf_hide_symbol (info, h, force_local)
2833 struct bfd_link_info *info;
2834 struct elf_link_hash_entry *h;
2835 boolean force_local;
2836{
2837 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2838
2839 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
2840 {
2841 const char *name;
2842 struct elf_link_hash_entry *fh;
2843 struct ppc_link_hash_table *htab;
2844
2845 name = h->root.root.string - 1;
2846 htab = ppc_hash_table (info);
2847 fh = elf_link_hash_lookup (&htab->elf, name, false, false, false);
2848 if (fh != NULL)
2849 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
2850 }
2851}
2852
65f38f15
AM		 2853/* This is the condition under which ppc64_elf_finish_dynamic_symbol
2854 will be called from elflink.h. If elflink.h doesn't call our
2855 finish_dynamic_symbol routine, we'll need to do something about
2856 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
2857#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
2858 ((DYN) \
2859 && ((INFO)->shared \
2860 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
2861 && ((H)->dynindx != -1 \
2862 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 2863
65f38f15
AM		 2864/* Allocate space in .plt, .got and associated reloc sections for
2865 dynamic relocs. */
5bd4f169
AM		 2866
2867static boolean
65f38f15
AM		 2868allocate_dynrelocs (h, inf)
2869 struct elf_link_hash_entry *h;
2870 PTR inf;
5bd4f169 2871{
65f38f15
AM		 2872 struct bfd_link_info *info;
2873 struct ppc_link_hash_table *htab;
5bd4f169 2874 asection *s;
65f38f15
AM		 2875 struct ppc_link_hash_entry *eh;
2876 struct ppc_dyn_relocs *p;
5bd4f169 2877
65f38f15
AM		 2878 if (h->root.type == bfd_link_hash_indirect
2879 || h->root.type == bfd_link_hash_warning)
2880 return true;
5bd4f169 2881
65f38f15
AM		 2882 info = (struct bfd_link_info *) inf;
2883 htab = ppc_hash_table (info);
5bd4f169 2884
65f38f15 2885 if (htab->elf.dynamic_sections_created
e86ce104
AM		 2886 && h->plt.refcount > 0
2887 && h->dynindx != -1)
5bd4f169 2888 {
e86ce104 2889 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5bd4f169 2890
65f38f15
AM		 2891 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2892 {
65f38f15
AM		 2893 /* If this is the first .plt entry, make room for the special
2894 first entry. */
2895 s = htab->splt;
5bd4f169 2896 if (s->_raw_size == 0)
65f38f15
AM		 2897 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
2898
2899 h->plt.offset = s->_raw_size;
2900
2901 /* Make room for this entry. */
2902 s->_raw_size += PLT_ENTRY_SIZE;
2903
5d1634d7
AM		 2904 /* Make room for the .stub and .glink code. */
2905 s = htab->sstub;
2906 s->_raw_size += PLT_CALL_STUB_SIZE;
65f38f15 2907
5d1634d7
AM		 2908 s = htab->sglink;
2909 if (s->_raw_size == 0)
2910 s->_raw_size += GLINK_CALL_STUB_SIZE;
2911 /* We need bigger stubs past index 32767. */
2912 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
2913 s->_raw_size += 4;
2914 s->_raw_size += 2*4;
65f38f15
AM		 2915
2916 /* We also need to make an entry in the .rela.plt section. */
2917 s = htab->srelplt;
2918 s->_raw_size += sizeof (Elf64_External_Rela);
2919 }
2920 else
2921 {
2922 h->plt.offset = (bfd_vma) -1;
2923 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2924 }
2925 }
2926 else
2927 {
2928 h->plt.offset = (bfd_vma) -1;
2929 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2930 }
2931
2932 if (h->got.refcount > 0)
2933 {
2934 boolean dyn;
2935
2936 /* Make sure this symbol is output as a dynamic symbol.
2937 Undefined weak syms won't yet be marked as dynamic. */
2938 if (h->dynindx == -1
2939 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2940 {
2941 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
2942 return false;
2943 }
2944
2945 s = htab->sgot;
2946 h->got.offset = s->_raw_size;
2947 s->_raw_size += 8;
2948 dyn = htab->elf.dynamic_sections_created;
2949 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2950 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
2951 }
2952 else
2953 h->got.offset = (bfd_vma) -1;
2954
2955 eh = (struct ppc_link_hash_entry *) h;
2956 if (eh->dyn_relocs == NULL)
2957 return true;
2958
2959 /* In the shared -Bsymbolic case, discard space allocated for
2960 dynamic pc-relative relocs against symbols which turn out to be
2961 defined in regular objects. For the normal shared case, discard
2962 space for relocs that have become local due to symbol visibility
2963 changes. */
2964
2965 if (info->shared)
2966 {
2967 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2968 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2969 || info->symbolic))
2970 {
2971 struct ppc_dyn_relocs **pp;
2972
2973 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 2974 {
65f38f15
AM		 2975 p->count -= p->pc_count;
2976 p->pc_count = 0;
2977 if (p->count == 0)
2978 *pp = p->next;
2979 else
2980 pp = &p->next;
5bd4f169 2981 }
65f38f15
AM		 2982 }
2983 }
2984 else
2985 {
2986 /* For the non-shared case, discard space for relocs against
2987 symbols which turn out to need copy relocs or are not
2988 dynamic. */
2989
2990 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2991 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2992 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2993 || (htab->elf.dynamic_sections_created
2994 && (h->root.type == bfd_link_hash_undefweak
2995 || h->root.type == bfd_link_hash_undefined))))
2996 {
2997 /* Make sure this symbol is output as a dynamic symbol.
2998 Undefined weak syms won't yet be marked as dynamic. */
2999 if (h->dynindx == -1
3000 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3001 {
ec338859 3002 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
65f38f15
AM		 3003 return false;
3004 }
3005
3006 /* If that succeeded, we know we'll be keeping all the
3007 relocs. */
3008 if (h->dynindx != -1)
3009 goto keep;
3010 }
3011
3012 eh->dyn_relocs = NULL;
3013
ec338859 3014 keep: ;
65f38f15
AM		 3015 }
3016
3017 /* Finally, allocate space. */
3018 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3019 {
3020 asection *sreloc = elf_section_data (p->sec)->sreloc;
3021 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
3022 }
3023
3024 return true;
3025}
3026
3027/* Find any dynamic relocs that apply to read-only sections. */
3028
3029static boolean
3030readonly_dynrelocs (h, inf)
3031 struct elf_link_hash_entry *h;
3032 PTR inf;
3033{
3034 struct ppc_link_hash_entry *eh;
3035 struct ppc_dyn_relocs *p;
3036
3037 eh = (struct ppc_link_hash_entry *) h;
3038 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3039 {
3040 asection *s = p->sec->output_section;
3041
3042 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3043 {
3044 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3045
3046 info->flags |= DF_TEXTREL;
3047
3048 /* Not an error, just cut short the traversal. */
3049 return false;
3050 }
3051 }
3052 return true;
3053}
3054
3055/* Set the sizes of the dynamic sections. */
3056
3057static boolean
3058ppc64_elf_size_dynamic_sections (output_bfd, info)
3059 bfd *output_bfd ATTRIBUTE_UNUSED;
3060 struct bfd_link_info *info;
3061{
3062 struct ppc_link_hash_table *htab;
3063 bfd *dynobj;
3064 asection *s;
3065 boolean relocs;
3066 bfd *ibfd;
3067
3068 htab = ppc_hash_table (info);
3069 dynobj = htab->elf.dynobj;
3070 if (dynobj == NULL)
3071 abort ();
3072
3073 if (htab->elf.dynamic_sections_created)
3074 {
3075 /* Set the contents of the .interp section to the interpreter. */
3076 if (! info->shared)
3077 {
3078 s = bfd_get_section_by_name (dynobj, ".interp");
3079 if (s == NULL)
3080 abort ();
3081 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3082 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3083 }
3084 }
3085
3086 /* Set up .got offsets for local syms, and space for local dynamic
3087 relocs. */
3088 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3089 {
3090 bfd_signed_vma *local_got;
3091 bfd_signed_vma *end_local_got;
3092 bfd_size_type locsymcount;
3093 Elf_Internal_Shdr *symtab_hdr;
3094 asection *srel;
3095
3096 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
3097 continue;
3098
3099 for (s = ibfd->sections; s != NULL; s = s->next)
3100 {
ec338859 3101 struct ppc_dyn_relocs *p;
65f38f15 3102
ec338859
AM		 3103 for (p = *((struct ppc_dyn_relocs **)
3104 &elf_section_data (s)->local_dynrel);
3105 p != NULL;
3106 p = p->next)
65f38f15 3107 {
ec338859
AM		 3108 if (!bfd_is_abs_section (p->sec)
3109 && bfd_is_abs_section (p->sec->output_section))
3110 {
3111 /* Input section has been discarded, either because
3112 it is a copy of a linkonce section or due to
3113 linker script /DISCARD/, so we'll be discarding
3114 the relocs too. */
3115 }
248866a8 3116 else if (p->count != 0)
ec338859
AM		 3117 {
3118 srel = elf_section_data (p->sec)->sreloc;
3119 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 3120 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3121 info->flags |= DF_TEXTREL;
ec338859 3122 }
65f38f15
AM		 3123 }
3124 }
3125
3126 local_got = elf_local_got_refcounts (ibfd);
3127 if (!local_got)
3128 continue;
3129
3130 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3131 locsymcount = symtab_hdr->sh_info;
3132 end_local_got = local_got + locsymcount;
3133 s = htab->sgot;
3134 srel = htab->srelgot;
3135 for (; local_got < end_local_got; ++local_got)
3136 {
3137 if (*local_got > 0)
5bd4f169 3138 {
65f38f15
AM		 3139 *local_got = s->_raw_size;
3140 s->_raw_size += 8;
3141 if (info->shared)
3142 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 3143 }
65f38f15
AM		 3144 else
3145 *local_got = (bfd_vma) -1;
3146 }
3147 }
3148
3149 /* Allocate global sym .plt and .got entries, and space for global
3150 sym dynamic relocs. */
3151 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
3152
3153 /* We now have determined the sizes of the various dynamic sections.
3154 Allocate memory for them. */
3155 relocs = false;
3156 for (s = dynobj->sections; s != NULL; s = s->next)
3157 {
5d1634d7
AM		 3158 bfd_vma size;
3159
65f38f15
AM		 3160 if ((s->flags & SEC_LINKER_CREATED) == 0)
3161 continue;
3162
3163 if (s == htab->splt
3164 || s == htab->sgot
5d1634d7 3165 || s == htab->sstub
65f38f15
AM		 3166 || s == htab->sglink)
3167 {
3168 /* Strip this section if we don't need it; see the
3169 comment below. */
5bd4f169 3170 }
65f38f15 3171 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 3172 {
3173 if (s->_raw_size == 0)
3174 {
3175 /* If we don't need this section, strip it from the
3176 output file. This is mostly to handle .rela.bss and
3177 .rela.plt. We must create both sections in
3178 create_dynamic_sections, because they must be created
3179 before the linker maps input sections to output
3180 sections. The linker does that before
3181 adjust_dynamic_symbol is called, and it is that
3182 function which decides whether anything needs to go
3183 into these sections. */
5bd4f169
AM		 3184 }
3185 else
3186 {
65f38f15
AM		 3187 if (s != htab->srelplt)
3188 relocs = true;
5bd4f169
AM		 3189
3190 /* We use the reloc_count field as a counter if we need
3191 to copy relocs into the output file. */
3192 s->reloc_count = 0;
3193 }
3194 }
65f38f15 3195 else
5bd4f169
AM		 3196 {
3197 /* It's not one of our sections, so don't allocate space. */
3198 continue;
3199 }
3200
65f38f15 3201 if (s->_raw_size == 0)
5bd4f169
AM		 3202 {
3203 _bfd_strip_section_from_output (info, s);
3204 continue;
3205 }
3206
65f38f15
AM		 3207 /* Allocate memory for the section contents. We use bfd_zalloc
3208 here in case unused entries are not reclaimed before the
3209 section's contents are written out. This should not happen,
3210 but this way if it does, we get a R_PPC64_NONE reloc instead
3211 of garbage. */
5d1634d7
AM		 3212 size = s->_raw_size;
3213 if (s == htab->sstub)
3214 {
3215 /* .stub may grow. Allocate enough for the maximum growth. */
3216 size += (size + 65536 + 65535) / 65536 * 4;
3217 }
3218 s->contents = (bfd_byte *) bfd_zalloc (dynobj, size);
65f38f15 3219 if (s->contents == NULL)
5bd4f169
AM		 3220 return false;
3221 }
3222
e86ce104 3223 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 3224 {
3225 /* Add some entries to the .dynamic section. We fill in the
3226 values later, in ppc64_elf_finish_dynamic_sections, but we
3227 must add the entries now so that we get the correct size for
3228 the .dynamic section. The DT_DEBUG entry is filled in by the
3229 dynamic linker and used by the debugger. */
dc810e39
AM		 3230#define add_dynamic_entry(TAG, VAL) \
3231 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
3232
3233 if (!info->shared)
5bd4f169 3234 {
dc810e39 3235 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 3236 return false;
3237 }
3238
65f38f15 3239 if (htab->splt->_raw_size != 0)
5bd4f169 3240 {
dc810e39
AM		 3241 if (!add_dynamic_entry (DT_PLTGOT, 0)
3242 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3243 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 3244 || !add_dynamic_entry (DT_JMPREL, 0)
3245 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5bd4f169
AM		 3246 return false;
3247 }
3248
19397422
AM		 3249 if (NO_OPD_RELOCS)
3250 {
3251 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
3252 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
3253 return false;
3254 }
3255
5bd4f169
AM		 3256 if (relocs)
3257 {
dc810e39
AM		 3258 if (!add_dynamic_entry (DT_RELA, 0)
3259 || !add_dynamic_entry (DT_RELASZ, 0)
3260 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 3261 return false;
5bd4f169 3262
65f38f15
AM		 3263 /* If any dynamic relocs apply to a read-only section,
3264 then we need a DT_TEXTREL entry. */
248866a8
AM		 3265 if ((info->flags & DF_TEXTREL) == 0)
3266 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
3267 (PTR) info);
5bd4f169 3268
65f38f15 3269 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 3270 {
65f38f15
AM		 3271 if (!add_dynamic_entry (DT_TEXTREL, 0))
3272 return false;
5bd4f169 3273 }
5bd4f169 3274 }
5bd4f169 3275 }
65f38f15 3276#undef add_dynamic_entry
5bd4f169
AM		 3277
3278 return true;
3279}
3280
3281/* Called after we have seen all the input files/sections, but before
3282 final symbol resolution and section placement has been determined.
3283
3284 We use this hook to provide a value for TOCstart, which we store in
5d1634d7 3285 the output bfd elf_gp. */
5bd4f169 3286
5d1634d7
AM		 3287boolean
3288ppc64_elf_set_toc (obfd, info)
3289 bfd *obfd;
5bd4f169
AM		 3290 struct bfd_link_info *info;
3291{
5d1634d7 3292 if (!info->relocateable)
5bd4f169
AM		 3293 {
3294 asection *s;
3295 bfd_vma TOCstart;
3296
5d1634d7 3297 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
5bd4f169 3298 order. The TOC starts where the first of these sections starts. */
5d1634d7 3299 s = bfd_get_section_by_name (obfd, ".got");
5bd4f169 3300 if (s == NULL)
5d1634d7 3301 s = bfd_get_section_by_name (obfd, ".toc");
5bd4f169 3302 if (s == NULL)
5d1634d7 3303 s = bfd_get_section_by_name (obfd, ".tocbss");
5bd4f169 3304 if (s == NULL)
5d1634d7 3305 s = bfd_get_section_by_name (obfd, ".plt");
5bd4f169
AM		 3306 if (s == NULL)
3307 {
3308 /* This may happen for
3309 o references to TOC base (SYM@toc / TOC[tc0]) without a
3310 .toc directive
3311 o bad linker script
3312 o --gc-sections and empty TOC sections
3313
3314 FIXME: Warn user? */
3315
3316 /* Look for a likely section. We probably won't even be
3317 using TOCstart. */
5d1634d7 3318 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3319 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
3320 == (SEC_ALLOC | SEC_SMALL_DATA))
3321 break;
3322 if (s == NULL)
5d1634d7 3323 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3324 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
3325 == (SEC_ALLOC | SEC_SMALL_DATA))
3326 break;
3327 if (s == NULL)
5d1634d7 3328 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3329 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
3330 break;
3331 if (s == NULL)
5d1634d7 3332 for (s = obfd->sections; s != NULL; s = s->next)
5bd4f169
AM		 3333 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
3334 break;
3335 }
3336
3337 TOCstart = 0;
3338 if (s != NULL)
3339 TOCstart = s->output_section->vma + s->output_offset;
3340
5d1634d7
AM		 3341 elf_gp (obfd) = TOCstart;
3342 }
3343 return true;
3344}
3345
3346/* PowerPC64 .plt entries are 24 bytes long, which doesn't divide
3347 evenly into 64k. Sometimes with a large enough .plt, we'll need to
3348 use offsets differing in the high 16 bits when accessing a .plt
3349 entry from a .plt call stub. This function adjusts the size of
3350 .stub to accommodate the extra stub instruction needed in such
3351 cases. */
3352
3353boolean
3354ppc64_elf_size_stubs (obfd, info, changed)
3355 bfd *obfd;
3356 struct bfd_link_info *info;
3357 int *changed;
3358{
3359 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3360 bfd_vma plt_offset, next_64k;
3361 long base, num, extra;
3362
3363 /* .plt and .stub should be both present, or both absent. */
3364 if ((htab->splt == NULL || htab->splt->_raw_size == 0)
3365 != (htab->sstub == NULL || htab->sstub->_raw_size == 0))
3366 abort ();
3367
3368 /* If no .plt, then nothing to do. */
3369 if (htab->splt == NULL || htab->splt->_raw_size == 0)
3370 return true;
3371
3372 plt_offset = (htab->splt->output_section->vma
3373 + htab->splt->output_offset
3374 - elf_gp (obfd));
3375 next_64k = (plt_offset + 65535) & -65536;
3376
3377 /* If the .plt doesn't have any entries crossing a 64k boundary,
3378 then there is no need for bigger stubs. */
0ad3a73b 3379 if (plt_offset + htab->splt->_raw_size <= next_64k)
5d1634d7
AM		 3380 return true;
3381
3382 /* OK, so we have at least one transition. Since .plt entries are
3383 24 bytes long, we'll strike it lucky every 3*64k, with the 64k
3384 boundary between .plt entries. */
3385 base = next_64k / 65536;
3386 num = (plt_offset + htab->splt->_raw_size - next_64k) / 65536;
3387 extra = (base % 3 + num + 1) * 2 / 3;
3388
3389 /* Allow one extra instruction for each EXTRA. The change in .stub
3390 may change the location of .toc and .plt. .toc and .plt ought to
3391 move as a group, but someone might be playing with eg. .plt
3392 alignment, so don't allow .stub size to decrease. */
3393 if (htab->sstub->_cooked_size < htab->sstub->_raw_size + extra * 4)
3394 {
3395 htab->sstub->_cooked_size = htab->sstub->_raw_size + extra * 4;
3396 *changed = true;
3397 }
3398 return true;
3399}
3400
3401/* Build a .plt call stub. */
3402
3403static bfd_byte *
3404build_plt_stub (obfd, p, offset, glink)
3405 bfd *obfd;
3406 bfd_byte *p;
3407 int offset;
3408 int glink;
3409{
3410#define PPC_LO(v) ((v) & 0xffff)
3411#define PPC_HI(v) (((v) >> 16) & 0xffff)
3412#define PPC_HA(v) PPC_HI ((v) + 0x8000)
3413
3414 if (glink)
3415 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
3416 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
3417 if (!glink)
3418 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
3419 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3420 if (PPC_HA (offset + 8) != PPC_HA (offset))
3421 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3422 offset += 8;
3423 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
3424 if (PPC_HA (offset + 8) != PPC_HA (offset))
3425 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
3426 offset += 8;
3427 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
3428 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
3429 bfd_put_32 (obfd, BCTR, p), p += 4;
3430 return p;
3431}
3432
3433/* Build the stubs for one function call. */
3434
3435static boolean
3436build_one_stub (h, inf)
3437 struct elf_link_hash_entry *h;
3438 PTR inf;
3439{
3440 struct bfd_link_info *info;
3441 struct ppc_link_hash_table *htab;
3442
3443 if (h->root.type == bfd_link_hash_indirect
3444 || h->root.type == bfd_link_hash_warning)
3445 return true;
3446
3447 info = (struct bfd_link_info *) inf;
3448 htab = ppc_hash_table (info);
3449
3450 if (htab->elf.dynamic_sections_created
41bd81ab
AM		 3451 && h->plt.offset != (bfd_vma) -1
3452 && ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
5d1634d7 3453 {
e86ce104 3454 struct elf_link_hash_entry *fh;
5d1634d7
AM		 3455 asection *s;
3456 bfd_vma plt_r2;
3457 bfd_byte *p;
3458 unsigned int indx;
3459
e86ce104
AM		 3460 fh = elf_link_hash_lookup (&htab->elf, h->root.root.string - 1,
3461 false, false, true);
3462
3463 if (fh == NULL)
3464 abort ();
3465
3466 BFD_ASSERT (((struct ppc_link_hash_entry *) fh)->is_func);
3467
5d1634d7
AM		 3468 /* Build the .plt call stub. */
3469 plt_r2 = (htab->splt->output_section->vma
3470 + htab->splt->output_offset
3471 + h->plt.offset
3472 - elf_gp (htab->splt->output_section->owner)
3473 - TOC_BASE_OFF);
3474
e86ce104
AM		 3475 if (plt_r2 + 0x80000000 > 0xffffffff
3476 || (plt_r2 & 3) != 0)
5d1634d7
AM		 3477 {
3478 (*_bfd_error_handler)
e86ce104 3479 (_("linkage table error against `%s'"),
5d1634d7
AM		 3480 h->root.root.string);
3481 bfd_set_error (bfd_error_bad_value);
3482 htab->plt_overflow = true;
3483 return false;
3484 }
41bd81ab
AM		 3485
3486 s = htab->sstub;
3487 /* Steal plt.offset to store the stub offset. */
3488 fh->plt.offset = s->_cooked_size;
5d1634d7
AM		 3489 p = s->contents + s->_cooked_size;
3490 p = build_plt_stub (s->owner, p, (int) plt_r2, 0);
3491 s->_cooked_size = p - s->contents;
3492
3493 /* Build the .glink lazy link call stub. */
3494 s = htab->sglink;
3495 p = s->contents + s->_cooked_size;
3496 indx = s->reloc_count;
3497 if (indx < 0x8000)
3498 {
3499 bfd_put_32 (s->owner, LI_R0_0 | indx, p);
3500 p += 4;
3501 }
3502 else
3503 {
3504 bfd_put_32 (s->owner, LIS_R0_0 | PPC_HI (indx), p);
3505 p += 4;
3506 bfd_put_32 (s->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
3507 p += 4;
3508 }
3509 bfd_put_32 (s->owner, B_DOT | ((s->contents - p) & 0x3fffffc), p);
3510 p += 4;
3511 s->_cooked_size = p - s->contents;
3512 s->reloc_count += 1;
5bd4f169 3513 }
5d1634d7
AM		 3514 return true;
3515}
5bd4f169 3516
5d1634d7
AM		 3517boolean
3518ppc64_elf_build_stubs (obfd, info)
3519 bfd *obfd;
3520 struct bfd_link_info *info;
3521{
3522 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3523 bfd_vma old_stub_size;
3524 bfd_vma plt_r2;
3525 bfd_byte *p;
3526
3527 /* If no .plt stubs, then nothing to do. */
3528 if (htab->sstub == NULL || htab->sstub->_raw_size == 0)
3529 return true;
3530
3531 old_stub_size = htab->sstub->_cooked_size;
3532 htab->sstub->_cooked_size = 0;
3533
3534 /* Build the .glink plt call stub. */
3535 plt_r2 = (htab->splt->output_section->vma
3536 + htab->splt->output_offset
3537 - elf_gp (obfd)
3538 - TOC_BASE_OFF);
3539 p = htab->sglink->contents;
3540 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
3541 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
3542 {
3543 bfd_put_32 (htab->sglink->owner, NOP, p);
3544 p += 4;
3545 }
3546 htab->sglink->_cooked_size = p - htab->sglink->contents;
3547
3548 /* Use reloc_count to count entries. */
3549 htab->sglink->reloc_count = 0;
3550
3551 elf_link_hash_traverse (&htab->elf, build_one_stub, (PTR) info);
3552 htab->sglink->reloc_count = 0;
3553
3554 if (htab->plt_overflow)
3555 return false;
3556
3557 if (old_stub_size != htab->sstub->_cooked_size
3558 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
3559 {
3560 (*_bfd_error_handler)
3561 (_("stub section size doesn't match calculated size"));
3562 bfd_set_error (bfd_error_bad_value);
3563 return false;
3564 }
3565 return true;
5bd4f169
AM		 3566}
3567
3568/* Set up any other section flags and such that may be necessary. */
3569
3570static boolean
3571ppc64_elf_fake_sections (abfd, shdr, asect)
3572 bfd *abfd ATTRIBUTE_UNUSED;
3573 Elf64_Internal_Shdr *shdr;
3574 asection *asect;
3575{
3576 if ((asect->flags & SEC_EXCLUDE) != 0)
3577 shdr->sh_flags |= SHF_EXCLUDE;
3578
3579 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
3580 shdr->sh_type = SHT_ORDERED;
3581
3582 return true;
3583}
3584
3585/* The RELOCATE_SECTION function is called by the ELF backend linker
3586 to handle the relocations for a section.
3587
3588 The relocs are always passed as Rela structures; if the section
3589 actually uses Rel structures, the r_addend field will always be
3590 zero.
3591
3592 This function is responsible for adjust the section contents as
3593 necessary, and (if using Rela relocs and generating a
3594 relocateable output file) adjusting the reloc addend as
3595 necessary.
3596
3597 This function does not have to worry about setting the reloc
3598 address or the reloc symbol index.
3599
3600 LOCAL_SYMS is a pointer to the swapped in local symbols.
3601
3602 LOCAL_SECTIONS is an array giving the section in the input file
3603 corresponding to the st_shndx field of each local symbol.
3604
3605 The global hash table entry for the global symbols can be found
3606 via elf_sym_hashes (input_bfd).
3607
3608 When generating relocateable output, this function must handle
3609 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
3610 going to be the section symbol corresponding to the output
3611 section, which means that the addend must be adjusted
3612 accordingly. */
3613
3614static boolean
3615ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
3616 contents, relocs, local_syms, local_sections)
3617 bfd *output_bfd;
3618 struct bfd_link_info *info;
3619 bfd *input_bfd;
3620 asection *input_section;
3621 bfd_byte *contents;
3622 Elf_Internal_Rela *relocs;
3623 Elf_Internal_Sym *local_syms;
3624 asection **local_sections;
3625{
65f38f15 3626 struct ppc_link_hash_table *htab;
5bd4f169
AM		 3627 Elf_Internal_Shdr *symtab_hdr;
3628 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 3629 Elf_Internal_Rela *rel;
3630 Elf_Internal_Rela *relend;
5bd4f169
AM		 3631 bfd_vma *local_got_offsets;
3632 bfd_vma TOCstart;
3633 boolean ret = true;
41bd81ab 3634 boolean is_opd;
96e0dda4
AM		 3635 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
3636 boolean is_power4 = false;
5bd4f169 3637
65f38f15 3638 /* Initialize howto table if needed. */
5bd4f169 3639 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 3640 ppc_howto_init ();
3641
65f38f15 3642 htab = ppc_hash_table (info);
5bd4f169 3643 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 3644 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 3645 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3646 sym_hashes = elf_sym_hashes (input_bfd);
41bd81ab 3647 is_opd = strcmp (bfd_get_section_name (abfd, input_section), ".opd") == 0;
65f38f15 3648
5bd4f169
AM		 3649 rel = relocs;
3650 relend = relocs + input_section->reloc_count;
3651 for (; rel < relend; rel++)
3652 {
3653 enum elf_ppc_reloc_type r_type;
3654 bfd_vma offset;
3655 bfd_vma addend;
3656 bfd_reloc_status_type r;
3657 Elf_Internal_Sym *sym;
3658 asection *sec;
3659 struct elf_link_hash_entry *h;
3660 const char *sym_name;
5bd4f169
AM		 3661 unsigned long r_symndx;
3662 bfd_vma relocation;
65f38f15 3663 boolean unresolved_reloc;
e86ce104 3664 boolean has_nop;
dc810e39 3665 long insn;
5bd4f169
AM		 3666
3667 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169
AM		 3668 r_symndx = ELF64_R_SYM (rel->r_info);
3669
3670 if (info->relocateable)
3671 {
3672 /* This is a relocatable link. We don't have to change
3673 anything, unless the reloc is against a section symbol,
3674 in which case we have to adjust according to where the
3675 section symbol winds up in the output section. */
3676 if (r_symndx < symtab_hdr->sh_info)
3677 {
3678 sym = local_syms + r_symndx;
3679 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3680 {
3681 sec = local_sections[r_symndx];
65f38f15 3682 rel->r_addend += sec->output_offset + sym->st_value;
5bd4f169
AM		 3683 }
3684 }
5bd4f169
AM		 3685 continue;
3686 }
3687
3688 /* This is a final link. */
3689
65f38f15
AM		 3690 offset = rel->r_offset;
3691 addend = rel->r_addend;
3692 r = bfd_reloc_other;
3693 sym = (Elf_Internal_Sym *) 0;
3694 sec = (asection *) 0;
3695 h = (struct elf_link_hash_entry *) 0;
3696 sym_name = (const char *) 0;
3697 unresolved_reloc = false;
3698
5bd4f169
AM		 3699 if (r_type == R_PPC64_TOC)
3700 {
3701 /* Relocation value is TOC base. Symbol is ignored. */
3702 relocation = TOCstart + TOC_BASE_OFF;
3703 }
3704 else if (r_symndx < symtab_hdr->sh_info)
3705 {
3706 /* It's a local symbol. */
3707 sym = local_syms + r_symndx;
3708 sec = local_sections[r_symndx];
3709 sym_name = "<local symbol>";
3710
f8df10f4
JJ		 3711 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
3712 addend = rel->r_addend;
5bd4f169
AM		 3713 }
3714 else
3715 {
3716 /* It's a global symbol. */
3717 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3718 while (h->root.type == bfd_link_hash_indirect
3719 || h->root.type == bfd_link_hash_warning)
3720 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3721 sym_name = h->root.root.string;
65f38f15 3722 relocation = 0;
5bd4f169
AM		 3723 if (h->root.type == bfd_link_hash_defined
3724 || h->root.type == bfd_link_hash_defweak)
3725 {
3726 sec = h->root.u.def.section;
65f38f15
AM		 3727 if (sec->output_section == NULL)
3728 /* Set a flag that will be cleared later if we find a
3729 relocation value for this symbol. output_section
3730 is typically NULL for symbols satisfied by a shared
3731 library. */
3732 unresolved_reloc = true;
5bd4f169
AM		 3733 else
3734 relocation = (h->root.u.def.value
3735 + sec->output_section->vma
3736 + sec->output_offset);
3737 }
3738 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 3739 ;
671bae9c 3740 else if (info->shared
65f38f15
AM		 3741 && (!info->symbolic || info->allow_shlib_undefined)
3742 && !info->no_undefined
3743 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3744 ;
5bd4f169
AM		 3745 else
3746 {
3747 if (! ((*info->callbacks->undefined_symbol)
3748 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 3749 offset, (!info->shared
3750 || info->no_undefined
3751 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169 3752 return false;
5bd4f169
AM		 3753 }
3754 }
3755
65f38f15 3756 /* First handle relocations that tweak non-addend part of insn. */
86c76c7b 3757 insn = 0;
65f38f15 3758 switch (r_type)
5bd4f169
AM		 3759 {
3760 default:
65f38f15 3761 break;
5bd4f169 3762
65f38f15
AM		 3763 /* Branch taken prediction relocations. */
3764 case R_PPC64_ADDR14_BRTAKEN:
3765 case R_PPC64_REL14_BRTAKEN:
96e0dda4 3766 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
86c76c7b 3767 /* Fall thru. */
65f38f15 3768
86c76c7b 3769 /* Branch not taken prediction relocations. */
65f38f15
AM		 3770 case R_PPC64_ADDR14_BRNTAKEN:
3771 case R_PPC64_REL14_BRNTAKEN:
86c76c7b 3772 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
96e0dda4
AM		 3773 if (is_power4)
3774 {
3775 /* Set 'a' bit. This is 0b00010 in BO field for branch
3776 on CR(BI) insns (BO == 001at or 011at), and 0b01000
3777 for branch on CTR insns (BO == 1a00t or 1a01t). */
3778 if ((insn & (0x14 << 21)) == (0x04 << 21))
3779 insn |= 0x02 << 21;
3780 else if ((insn & (0x14 << 21)) == (0x10 << 21))
3781 insn |= 0x08 << 21;
3782 else
3783 break;
3784 }
65f38f15 3785 else
96e0dda4
AM		 3786 {
3787 /* Invert 'y' bit if not the default. */
3788 if ((bfd_signed_vma) (relocation - offset) < 0)
3789 insn ^= 0x01 << 21;
3790 }
86c76c7b 3791
65f38f15
AM		 3792 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3793 break;
5bd4f169 3794
65f38f15
AM		 3795 case R_PPC64_REL24:
3796 case R_PPC64_ADDR24:
5bd4f169 3797 /* An ADDR24 or REL24 branching to a linkage function may be
65f38f15 3798 followed by a nop that we have to replace with a ld in
5bd4f169
AM		 3799 order to restore the TOC base pointer. Only calls to
3800 shared objects need to alter the TOC base. These are
3801 recognized by their need for a PLT entry. */
e86ce104 3802 has_nop = 0;
5bd4f169 3803 if (h != NULL
41bd81ab
AM		 3804 && h->plt.offset != (bfd_vma) -1
3805 && htab->sstub != NULL)
3806 {
3807 /* plt.offset here is the offset into the stub section. */
3808 relocation = (htab->sstub->output_section->vma
3809 + htab->sstub->output_offset
3810 + h->plt.offset);
3811 unresolved_reloc = false;
3812
5bd4f169
AM		 3813 /* Make sure that there really is an instruction after
3814 the branch that we can decode. */
41bd81ab
AM		 3815 if (offset + 8 <= input_section->_cooked_size)
3816 {
3817 bfd_byte *pnext;
5bd4f169 3818
41bd81ab
AM		 3819 pnext = contents + offset + 4;
3820 insn = bfd_get_32 (input_bfd, pnext);
5bd4f169 3821
41bd81ab
AM		 3822 if (insn == 0x60000000 /* nop (ori r0,r0,0) */
3823 || insn == 0x4def7b82 /* cror 15,15,15 */
3824 || insn == 0x4ffffb82) /* cror 31,31,31 */
3825 {
3826 bfd_put_32 (input_bfd,
3827 (bfd_vma) 0xe8410028, /* ld r2,40(r1) */
3828 pnext);
3829 has_nop = 1;
3830 }
5bd4f169
AM		 3831 }
3832 }
e86ce104
AM		 3833
3834 if (h != NULL
3835 && h->root.type == bfd_link_hash_undefweak
3836 && r_type == R_PPC64_REL24
3837 && addend == 0
3838 && relocation == 0)
3839 {
3840 /* Tweak calls to undefined weak functions to behave as
3841 if the "called" function immediately returns. We can
3842 thus call to a weak function without first checking
3843 whether the function is defined. */
3844 relocation = 4;
3845 if (has_nop)
3846 relocation = 8;
3847 }
65f38f15
AM		 3848 break;
3849 }
5bd4f169 3850
65f38f15
AM		 3851 /* Set `addend'. */
3852 switch (r_type)
3853 {
3854 default:
3855 (*_bfd_error_handler)
3856 (_("%s: unknown relocation type %d for symbol %s"),
3857 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 3858
65f38f15
AM		 3859 bfd_set_error (bfd_error_bad_value);
3860 ret = false;
3861 continue;
5bd4f169 3862
65f38f15
AM		 3863 case R_PPC64_NONE:
3864 case R_PPC_GNU_VTINHERIT:
3865 case R_PPC_GNU_VTENTRY:
3866 continue;
5bd4f169
AM		 3867
3868 /* GOT16 relocations. Like an ADDR16 using the symbol's
3869 address in the GOT as relocation value instead of the
3870 symbols value itself. Also, create a GOT entry for the
3871 symbol and put the symbol value there. */
65f38f15
AM		 3872 case R_PPC64_GOT16:
3873 case R_PPC64_GOT16_LO:
3874 case R_PPC64_GOT16_HI:
3875 case R_PPC64_GOT16_HA:
3876 case R_PPC64_GOT16_DS:
3877 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 3878 {
3879 /* Relocation is to the entry for this symbol in the global
3880 offset table. */
3881 bfd_vma off;
65f38f15
AM		 3882
3883 if (htab->sgot == NULL)
3884 abort ();
5bd4f169
AM		 3885
3886 if (h != NULL)
3887 {
65f38f15 3888 boolean dyn;
5bd4f169 3889
65f38f15
AM		 3890 off = h->got.offset;
3891 dyn = htab->elf.dynamic_sections_created;
3892 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 3893 || (info->shared
65f38f15
AM		 3894 && (info->symbolic
3895 || h->dynindx == -1
3896 || (h->elf_link_hash_flags
3897 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 3898 && (h->elf_link_hash_flags
3899 & ELF_LINK_HASH_DEF_REGULAR)))
3900 {
3901 /* This is actually a static link, or it is a
3902 -Bsymbolic link and the symbol is defined
65f38f15
AM		 3903 locally, or the symbol was forced to be local
3904 because of a version file. We must initialize
3905 this entry in the global offset table. Since the
3906 offset must always be a multiple of 8, we use the
3907 least significant bit to record whether we have
5bd4f169
AM		 3908 initialized it already.
3909
65f38f15 3910 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 3911 relocation entry to initialize the value. This
3912 is done in the finish_dynamic_symbol routine. */
3913 if ((off & 1) != 0)
3914 off &= ~1;
3915 else
3916 {
3917 bfd_put_64 (output_bfd, relocation,
65f38f15 3918 htab->sgot->contents + off);
5bd4f169
AM		 3919 h->got.offset |= 1;
3920 }
3921 }
65f38f15
AM		 3922 else
3923 unresolved_reloc = false;
5bd4f169
AM		 3924 }
3925 else
3926 {
65f38f15
AM		 3927 if (local_got_offsets == NULL)
3928 abort ();
5bd4f169
AM		 3929
3930 off = local_got_offsets[r_symndx];
3931
65f38f15 3932 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 3933 the least significant bit to record whether we have
3934 already processed this entry. */
3935 if ((off & 1) != 0)
3936 off &= ~1;
3937 else
3938 {
65f38f15
AM		 3939 bfd_put_64 (output_bfd, relocation,
3940 htab->sgot->contents + off);
5bd4f169
AM		 3941
3942 if (info->shared)
3943 {
5bd4f169 3944 Elf_Internal_Rela outrel;
65f38f15 3945 Elf64_External_Rela *loc;
5bd4f169
AM		 3946
3947 /* We need to generate a R_PPC64_RELATIVE reloc
3948 for the dynamic linker. */
65f38f15
AM		 3949 outrel.r_offset = (htab->sgot->output_section->vma
3950 + htab->sgot->output_offset
5bd4f169
AM		 3951 + off);
3952 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
3953 outrel.r_addend = relocation;
65f38f15
AM		 3954 loc = (Elf64_External_Rela *) htab->srelgot->contents;
3955 loc += htab->srelgot->reloc_count++;
3956 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 3957 }
3958
3959 local_got_offsets[r_symndx] |= 1;
3960 }
3961 }
3962
65f38f15
AM		 3963 if (off >= (bfd_vma) -2)
3964 abort ();
3965
3966 relocation = htab->sgot->output_offset + off;
3967
5bd4f169
AM		 3968 /* TOC base (r2) is TOC start plus 0x8000. */
3969 addend -= TOC_BASE_OFF;
5bd4f169 3970 }
65f38f15
AM		 3971 break;
3972
3973 case R_PPC64_PLT16_HA:
3974 case R_PPC64_PLT16_HI:
3975 case R_PPC64_PLT16_LO:
3976 case R_PPC64_PLT32:
3977 case R_PPC64_PLT64:
3978 /* Relocation is to the entry for this symbol in the
3979 procedure linkage table. */
3980
3981 /* Resolve a PLT reloc against a local symbol directly,
3982 without using the procedure linkage table. */
3983 if (h == NULL)
3984 break;
3985
3986 if (h->plt.offset == (bfd_vma) -1
3987 || htab->splt == NULL)
3988 {
3989 /* We didn't make a PLT entry for this symbol. This
3990 happens when statically linking PIC code, or when
3991 using -Bsymbolic. */
3992 break;
3993 }
3994
3995 relocation = (htab->splt->output_section->vma
3996 + htab->splt->output_offset
3997 + h->plt.offset);
3998 unresolved_reloc = false;
3999 break;
5bd4f169
AM		 4000
4001 /* TOC16 relocs. We want the offset relative to the TOC base,
4002 which is the address of the start of the TOC plus 0x8000.
4003 The TOC consists of sections .got, .toc, .tocbss, and .plt,
4004 in this order. */
65f38f15
AM		 4005 case R_PPC64_TOC16:
4006 case R_PPC64_TOC16_LO:
4007 case R_PPC64_TOC16_HI:
4008 case R_PPC64_TOC16_DS:
4009 case R_PPC64_TOC16_LO_DS:
4010 case R_PPC64_TOC16_HA:
5bd4f169 4011 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 4012 break;
4013
4014 /* Relocate against the beginning of the section. */
65f38f15
AM		 4015 case R_PPC64_SECTOFF:
4016 case R_PPC64_SECTOFF_LO:
4017 case R_PPC64_SECTOFF_HI:
4018 case R_PPC64_SECTOFF_DS:
4019 case R_PPC64_SECTOFF_LO_DS:
4020 case R_PPC64_SECTOFF_HA:
4021 if (sec != (asection *) 0)
4022 addend -= sec->output_section->vma;
5bd4f169
AM		 4023 break;
4024
5d1634d7
AM		 4025 case R_PPC64_REL24:
4026 break;
4027
65f38f15
AM		 4028 /* Relocations that may need to be propagated if this is a
4029 dynamic object. */
4030 case R_PPC64_REL14:
4031 case R_PPC64_REL14_BRNTAKEN:
4032 case R_PPC64_REL14_BRTAKEN:
65f38f15
AM		 4033 case R_PPC64_REL32:
4034 case R_PPC64_REL64:
4035 case R_PPC64_ADDR14:
4036 case R_PPC64_ADDR14_BRNTAKEN:
4037 case R_PPC64_ADDR14_BRTAKEN:
4038 case R_PPC64_ADDR16:
4039 case R_PPC64_ADDR16_DS:
4040 case R_PPC64_ADDR16_HA:
4041 case R_PPC64_ADDR16_HI:
4042 case R_PPC64_ADDR16_HIGHER:
4043 case R_PPC64_ADDR16_HIGHERA:
4044 case R_PPC64_ADDR16_HIGHEST:
4045 case R_PPC64_ADDR16_HIGHESTA:
4046 case R_PPC64_ADDR16_LO:
4047 case R_PPC64_ADDR16_LO_DS:
4048 case R_PPC64_ADDR24:
4049 case R_PPC64_ADDR30:
4050 case R_PPC64_ADDR32:
4051 case R_PPC64_ADDR64:
4052 case R_PPC64_UADDR16:
4053 case R_PPC64_UADDR32:
4054 case R_PPC64_UADDR64:
ec338859
AM		 4055 /* r_symndx will be zero only for relocs against symbols
4056 from removed linkonce sections, or sections discarded by
4057 a linker script. */
5d1634d7
AM		 4058 if (r_symndx == 0)
4059 break;
4060 /* Fall thru. */
4061
4062 case R_PPC64_TOC:
4063 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 4064 break;
4065
41bd81ab
AM		 4066 if (NO_OPD_RELOCS && is_opd)
4067 break;
4068
65f38f15 4069 if ((info->shared
65f38f15
AM		 4070 && (IS_ABSOLUTE_RELOC (r_type)
4071 || (h != NULL
4072 && h->dynindx != -1
4073 && (! info->symbolic
4074 || (h->elf_link_hash_flags
4075 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
4076 || (!info->shared
65f38f15
AM		 4077 && h != NULL
4078 && h->dynindx != -1
4079 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
4080 && (((h->elf_link_hash_flags
4081 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4082 && (h->elf_link_hash_flags
4083 & ELF_LINK_HASH_DEF_REGULAR) == 0)
4084 || h->root.type == bfd_link_hash_undefweak
4085 || h->root.type == bfd_link_hash_undefined)))
4086 {
4087 Elf_Internal_Rela outrel;
4088 boolean skip, relocate;
4089 asection *sreloc;
4090 Elf64_External_Rela *loc;
4091
4092 /* When generating a dynamic object, these relocations
4093 are copied into the output file to be resolved at run
4094 time. */
4095
4096 skip = false;
0bb2d96a 4097 relocate = false;
65f38f15 4098
c629eae0
JJ		 4099 outrel.r_offset =
4100 _bfd_elf_section_offset (output_bfd, info, input_section,
4101 rel->r_offset);
4102 if (outrel.r_offset == (bfd_vma) -1)
4103 skip = true;
0bb2d96a
JJ		 4104 else if (outrel.r_offset == (bfd_vma) -2)
4105 skip = true, relocate = true;
65f38f15
AM		 4106 outrel.r_offset += (input_section->output_section->vma
4107 + input_section->output_offset);
4108 outrel.r_addend = addend;
4109
4110 if (skip)
0bb2d96a 4111 memset (&outrel, 0, sizeof outrel);
65f38f15
AM		 4112 else if (h != NULL
4113 && h->dynindx != -1
41bd81ab 4114 && !is_opd
65f38f15
AM		 4115 && (!IS_ABSOLUTE_RELOC (r_type)
4116 || !info->shared
4117 || !info->symbolic
4118 || (h->elf_link_hash_flags
4119 & ELF_LINK_HASH_DEF_REGULAR) == 0))
0bb2d96a 4120 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
65f38f15
AM		 4121 else
4122 {
41bd81ab
AM		 4123 /* This symbol is local, or marked to become local,
4124 or this is an opd section reloc which must point
4125 at a local function. */
65f38f15
AM		 4126 outrel.r_addend += relocation;
4127 relocate = true;
e86ce104 4128 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15
AM		 4129 {
4130 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4131 }
4132 else
4133 {
4134 long indx = 0;
4135
41bd81ab 4136 if (bfd_is_abs_section (sec))
65f38f15
AM		 4137 ;
4138 else if (sec == NULL || sec->owner == NULL)
4139 {
4140 bfd_set_error (bfd_error_bad_value);
4141 return false;
4142 }
4143 else
4144 {
4145 asection *osec;
4146
4147 osec = sec->output_section;
4148 indx = elf_section_data (osec)->dynindx;
4149
4150 /* We are turning this relocation into one
4151 against a section symbol, so subtract out
4152 the output section's address but not the
4153 offset of the input section in the output
4154 section. */
4155 outrel.r_addend -= osec->vma;
4156 }
4157
4158 outrel.r_info = ELF64_R_INFO (indx, r_type);
4159 }
4160 }
4161
4162 sreloc = elf_section_data (input_section)->sreloc;
4163 if (sreloc == NULL)
4164 abort ();
4165
4166 loc = (Elf64_External_Rela *) sreloc->contents;
4167 loc += sreloc->reloc_count++;
4168 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
4169
4170 /* If this reloc is against an external symbol, it will
4171 be computed at runtime, so there's no need to do
4172 anything now. */
4173 if (! relocate)
4174 continue;
4175 }
5bd4f169
AM		 4176 break;
4177
65f38f15
AM		 4178 case R_PPC64_COPY:
4179 case R_PPC64_GLOB_DAT:
4180 case R_PPC64_JMP_SLOT:
4181 case R_PPC64_RELATIVE:
4182 /* We shouldn't ever see these dynamic relocs in relocatable
4183 files. */
4184 /* Fall thru */
4185
4186 case R_PPC64_PLTGOT16:
4187 case R_PPC64_PLTGOT16_DS:
4188 case R_PPC64_PLTGOT16_HA:
4189 case R_PPC64_PLTGOT16_HI:
4190 case R_PPC64_PLTGOT16_LO:
4191 case R_PPC64_PLTGOT16_LO_DS:
4192 case R_PPC64_PLTREL32:
4193 case R_PPC64_PLTREL64:
4194 /* These ones haven't been implemented yet. */
4195
4196 (*_bfd_error_handler)
4197 (_("%s: Relocation %s is not supported for symbol %s."),
4198 bfd_archive_filename (input_bfd),
4199 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 4200
4201 bfd_set_error (bfd_error_invalid_operation);
4202 ret = false;
4203 continue;
65f38f15 4204 }
5bd4f169 4205
65f38f15
AM		 4206 /* Do any further special processing. */
4207 switch (r_type)
4208 {
4209 default:
4210 break;
4211
4212 case R_PPC64_ADDR16_HA:
4213 case R_PPC64_ADDR16_HIGHERA:
4214 case R_PPC64_ADDR16_HIGHESTA:
4215 case R_PPC64_PLT16_HA:
4216 case R_PPC64_TOC16_HA:
4217 case R_PPC64_SECTOFF_HA:
4218 /* It's just possible that this symbol is a weak symbol
4219 that's not actually defined anywhere. In that case,
4220 'sec' would be NULL, and we should leave the symbol
4221 alone (it will be set to zero elsewhere in the link). */
4222 if (sec != NULL)
4223 /* Add 0x10000 if sign bit in 0:15 is set. */
4224 addend += ((relocation + addend) & 0x8000) << 1;
4225 break;
4226
4227 case R_PPC64_ADDR16_DS:
4228 case R_PPC64_ADDR16_LO_DS:
4229 case R_PPC64_GOT16_DS:
4230 case R_PPC64_GOT16_LO_DS:
4231 case R_PPC64_PLT16_LO_DS:
4232 case R_PPC64_SECTOFF_DS:
4233 case R_PPC64_SECTOFF_LO_DS:
4234 case R_PPC64_TOC16_DS:
4235 case R_PPC64_TOC16_LO_DS:
4236 case R_PPC64_PLTGOT16_DS:
4237 case R_PPC64_PLTGOT16_LO_DS:
4238 if (((relocation + addend) & 3) != 0)
4239 {
4240 (*_bfd_error_handler)
4241 (_("%s: error: relocation %s not a multiple of 4"),
4242 bfd_archive_filename (input_bfd),
4243 ppc64_elf_howto_table[(int) r_type]->name);
4244 bfd_set_error (bfd_error_bad_value);
4245 ret = false;
4246 continue;
4247 }
4248 break;
5bd4f169
AM		 4249 }
4250
65f38f15
AM		 4251 /* FIXME: Why do we allow debugging sections to escape this error?
4252 More importantly, why do we not emit dynamic relocs above in
4253 debugging sections (which are ! SEC_ALLOC)? If we had
4254 emitted the dynamic reloc, we could remove the fudge here. */
4255 if (unresolved_reloc
4256 && !(info->shared
4257 && (input_section->flags & SEC_DEBUGGING) != 0
4258 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
4259 (*_bfd_error_handler)
4260 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
4261 bfd_archive_filename (input_bfd),
4262 bfd_get_section_name (input_bfd, input_section),
4263 (long) rel->r_offset,
4264 h->root.root.string);
5bd4f169 4265
65f38f15 4266 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 4267 input_bfd,
4268 input_section,
4269 contents,
4270 offset,
4271 relocation,
4272 addend);
4273
4274 if (r == bfd_reloc_ok)
4275 ;
4276 else if (r == bfd_reloc_overflow)
4277 {
4278 const char *name;
4279
4280 if (h != NULL)
4281 {
4282 if (h->root.type == bfd_link_hash_undefweak
65f38f15 4283 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 4284 {
4285 /* Assume this is a call protected by other code that
4286 detects the symbol is undefined. If this is the case,
4287 we can safely ignore the overflow. If not, the
4288 program is hosed anyway, and a little warning isn't
4289 going to help. */
4290
4291 continue;
4292 }
4293
4294 name = h->root.root.string;
4295 }
4296 else
4297 {
4298 name = bfd_elf_string_from_elf_section (input_bfd,
4299 symtab_hdr->sh_link,
4300 sym->st_name);
4301 if (name == NULL)
4302 continue;
4303 if (*name == '\0')
4304 name = bfd_section_name (input_bfd, sec);
4305 }
4306
65f38f15
AM		 4307 if (! ((*info->callbacks->reloc_overflow)
4308 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
4309 (bfd_vma) 0, input_bfd, input_section, offset)))
5bd4f169
AM		 4310 return false;
4311 }
4312 else
4313 ret = false;
4314 }
4315
5bd4f169
AM		 4316 return ret;
4317}
4318
4319/* Finish up dynamic symbol handling. We set the contents of various
4320 dynamic sections here. */
4321
4322static boolean
4323ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
4324 bfd *output_bfd;
4325 struct bfd_link_info *info;
4326 struct elf_link_hash_entry *h;
4327 Elf_Internal_Sym *sym;
4328{
65f38f15 4329 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4330 bfd *dynobj;
4331
65f38f15
AM		 4332 htab = ppc_hash_table (info);
4333 dynobj = htab->elf.dynobj;
5bd4f169 4334
41bd81ab
AM		 4335 if (h->plt.offset != (bfd_vma) -1
4336 && ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
5bd4f169 4337 {
65f38f15
AM		 4338 Elf_Internal_Rela rela;
4339 Elf64_External_Rela *loc;
5bd4f169
AM		 4340
4341 /* This symbol has an entry in the procedure linkage table. Set
4342 it up. */
4343
5d1634d7 4344 if (htab->splt == NULL
65f38f15 4345 || htab->srelplt == NULL
e86ce104 4346 || htab->sglink == NULL)
65f38f15
AM		 4347 abort ();
4348
65f38f15
AM		 4349 /* Create a JMP_SLOT reloc to inform the dynamic linker to
4350 fill in the PLT entry. */
5bd4f169 4351
65f38f15
AM		 4352 rela.r_offset = (htab->splt->output_section->vma
4353 + htab->splt->output_offset
4354 + h->plt.offset);
e86ce104 4355 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
65f38f15
AM		 4356 rela.r_addend = 0;
4357
4358 loc = (Elf64_External_Rela *) htab->srelplt->contents;
4359 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4360 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4361 }
4362
4363 if (h->got.offset != (bfd_vma) -1)
4364 {
5bd4f169 4365 Elf_Internal_Rela rela;
65f38f15 4366 Elf64_External_Rela *loc;
5bd4f169
AM		 4367
4368 /* This symbol has an entry in the global offset table. Set it
4369 up. */
4370
65f38f15
AM		 4371 if (htab->sgot == NULL || htab->srelgot == NULL)
4372 abort ();
5bd4f169 4373
65f38f15
AM		 4374 rela.r_offset = (htab->sgot->output_section->vma
4375 + htab->sgot->output_offset
dc810e39 4376 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 4377
65f38f15
AM		 4378 /* If this is a static link, or it is a -Bsymbolic link and the
4379 symbol is defined locally or was forced to be local because
4380 of a version file, we just want to emit a RELATIVE reloc.
4381 The entry in the global offset table will already have been
4382 initialized in the relocate_section function. */
5bd4f169 4383 if (info->shared
65f38f15
AM		 4384 && (info->symbolic
4385 || h->dynindx == -1
4386 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 4387 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4388 {
65f38f15 4389 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 4390 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4391 rela.r_addend = (h->root.u.def.value
4392 + h->root.u.def.section->output_section->vma
4393 + h->root.u.def.section->output_offset);
4394 }
4395 else
4396 {
4397 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 4398 bfd_put_64 (output_bfd, (bfd_vma) 0,
4399 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 4400 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
4401 rela.r_addend = 0;
4402 }
4403
65f38f15
AM		 4404 loc = (Elf64_External_Rela *) htab->srelgot->contents;
4405 loc += htab->srelgot->reloc_count++;
4406 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4407 }
4408
4409 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4410 {
5bd4f169 4411 Elf_Internal_Rela rela;
65f38f15 4412 Elf64_External_Rela *loc;
5bd4f169 4413
65f38f15 4414 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 4415
65f38f15
AM		 4416 if (h->dynindx == -1
4417 || (h->root.type != bfd_link_hash_defined
4418 && h->root.type != bfd_link_hash_defweak)
4419 || htab->srelbss == NULL)
4420 abort ();
5bd4f169
AM		 4421
4422 rela.r_offset = (h->root.u.def.value
4423 + h->root.u.def.section->output_section->vma
4424 + h->root.u.def.section->output_offset);
4425 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
4426 rela.r_addend = 0;
65f38f15
AM		 4427 loc = (Elf64_External_Rela *) htab->srelbss->contents;
4428 loc += htab->srelbss->reloc_count++;
4429 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 4430 }
4431
5bd4f169
AM		 4432 /* Mark some specially defined symbols as absolute. */
4433 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
4434 sym->st_shndx = SHN_ABS;
4435
4436 return true;
4437}
4438
65f38f15
AM		 4439/* Used to decide how to sort relocs in an optimal manner for the
4440 dynamic linker, before writing them out. */
4441
4442static enum elf_reloc_type_class
4443ppc64_elf_reloc_type_class (rela)
4444 const Elf_Internal_Rela *rela;
4445{
a33d1f77
AM		 4446 enum elf_ppc_reloc_type r_type;
4447
4448 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
4449 switch (r_type)
65f38f15
AM		 4450 {
4451 case R_PPC64_RELATIVE:
4452 return reloc_class_relative;
4453 case R_PPC64_JMP_SLOT:
4454 return reloc_class_plt;
4455 case R_PPC64_COPY:
4456 return reloc_class_copy;
4457 default:
4458 return reloc_class_normal;
4459 }
4460}
4461
5bd4f169
AM		 4462/* Finish up the dynamic sections. */
4463
4464static boolean
4465ppc64_elf_finish_dynamic_sections (output_bfd, info)
4466 bfd *output_bfd;
4467 struct bfd_link_info *info;
4468{
65f38f15
AM		 4469 struct ppc_link_hash_table *htab;
4470 bfd *dynobj;
5bd4f169 4471 asection *sdyn;
5bd4f169 4472
65f38f15
AM		 4473 htab = ppc_hash_table (info);
4474 dynobj = htab->elf.dynobj;
5bd4f169
AM		 4475 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4476
65f38f15 4477 if (htab->elf.dynamic_sections_created)
5bd4f169 4478 {
5bd4f169
AM		 4479 Elf64_External_Dyn *dyncon, *dynconend;
4480
65f38f15
AM		 4481 if (sdyn == NULL || htab->sgot == NULL)
4482 abort ();
5bd4f169
AM		 4483
4484 dyncon = (Elf64_External_Dyn *) sdyn->contents;
4485 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4486 for (; dyncon < dynconend; dyncon++)
4487 {
4488 Elf_Internal_Dyn dyn;
19397422 4489 asection *s;
5bd4f169
AM		 4490
4491 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
4492
4493 switch (dyn.d_tag)
4494 {
65f38f15
AM		 4495 default:
4496 continue;
5bd4f169 4497
5d1634d7
AM		 4498 case DT_PPC64_GLINK:
4499 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
4500 + htab->sglink->output_offset);
4501 break;
4502
19397422
AM		 4503 case DT_PPC64_OPD:
4504 s = bfd_get_section_by_name (output_bfd, ".opd");
4505 if (s != NULL)
4506 dyn.d_un.d_ptr = s->vma;
4507 break;
4508
4509 case DT_PPC64_OPDSZ:
4510 s = bfd_get_section_by_name (output_bfd, ".opd");
4511 if (s != NULL)
4512 dyn.d_un.d_val = s->_raw_size;
4513 break;
4514
65f38f15 4515 case DT_PLTGOT:
5d1634d7
AM		 4516 dyn.d_un.d_ptr = (htab->splt->output_section->vma
4517 + htab->splt->output_offset);
65f38f15
AM		 4518 break;
4519
4520 case DT_JMPREL:
5d1634d7
AM		 4521 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
4522 + htab->srelplt->output_offset);
65f38f15 4523 break;
5bd4f169 4524
65f38f15 4525 case DT_PLTRELSZ:
5d1634d7
AM		 4526 dyn.d_un.d_val = htab->srelplt->_raw_size;
4527 break;
4528
4529 case DT_RELASZ:
4530 /* Don't count procedure linkage table relocs in the
4531 overall reloc count. */
4532 if (htab->srelplt != NULL)
4533 dyn.d_un.d_val -= htab->srelplt->_raw_size;
65f38f15 4534 break;
5bd4f169 4535 }
5bd4f169 4536
65f38f15 4537 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 4538 }
5bd4f169
AM		 4539 }
4540
5d1634d7
AM		 4541 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
4542 {
4543 /* Fill in the first entry in the global offset table.
4544 We use it to hold the link-time TOCbase. */
4545 bfd_put_64 (output_bfd,
60ee0d4a 4546 elf_gp (output_bfd) + TOC_BASE_OFF,
5d1634d7
AM		 4547 htab->sgot->contents);
4548
4549 /* Set .got entry size. */
4550 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
4551 }
4552
4553 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4554 {
4555 /* Set .plt entry size. */
4556 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
4557 = PLT_ENTRY_SIZE;
4558 }
4559
5bd4f169
AM		 4560 return true;
4561}
4562
4563#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
4564#define TARGET_LITTLE_NAME "elf64-powerpcle"
4565#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
4566#define TARGET_BIG_NAME "elf64-powerpc"
4567#define ELF_ARCH bfd_arch_powerpc
4568#define ELF_MACHINE_CODE EM_PPC64
4569#define ELF_MAXPAGESIZE 0x10000
4570#define elf_info_to_howto ppc64_elf_info_to_howto
4571
4572#ifdef EM_CYGNUS_POWERPC
4573#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
4574#endif
4575
4576#ifdef EM_PPC_OLD
4577#define ELF_MACHINE_ALT2 EM_PPC_OLD
4578#endif
4579
4580#define elf_backend_want_got_sym 0
4581#define elf_backend_want_plt_sym 0
4582#define elf_backend_plt_alignment 3
4583#define elf_backend_plt_not_loaded 1
4584#define elf_backend_got_symbol_offset 0
5d1634d7
AM		 4585#define elf_backend_got_header_size 8
4586#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
5bd4f169 4587#define elf_backend_can_gc_sections 1
65f38f15 4588#define elf_backend_can_refcount 1
5bd4f169 4589
65f38f15
AM		 4590#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
4591#define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
65f38f15
AM		 4592#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
4593#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
65f38f15
AM		 4594
4595#define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
4596#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
4597#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
4598#define elf_backend_check_relocs ppc64_elf_check_relocs
4599#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
4600#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
4601#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
e86ce104
AM		 4602#define elf_backend_hide_symbol ppc64_elf_hide_symbol
4603#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
65f38f15
AM		 4604#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
4605#define elf_backend_fake_sections ppc64_elf_fake_sections
4606#define elf_backend_relocate_section ppc64_elf_relocate_section
4607#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
4608#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
4609#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 4610
4611#include "elf64-target.h"
GDB Binutils - Deliverables
This page took 0.259372 seconds and 4 git commands to generate.