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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
5d1634d7 2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22/* This file is based on the 64-bit PowerPC ELF ABI. It is also based
23 on the file elf32-ppc.c. */
24
25#include "bfd.h"
26#include "sysdep.h"
27#include "bfdlink.h"
28#include "libbfd.h"
29#include "elf-bfd.h"
30#include "elf/ppc.h"
5d1634d7 31#include "elf64-ppc.h"
5bd4f169
AM		 32
33#define USE_RELA /* we want RELA relocations, not REL. */
34
35
36static void ppc_howto_init
37 PARAMS ((void));
38static reloc_howto_type *ppc64_elf_reloc_type_lookup
39 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
40static void ppc64_elf_info_to_howto
41 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
805fc799
AM		 42static bfd_reloc_status_type ppc64_elf_ha_reloc
43 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
44static bfd_reloc_status_type ppc64_elf_brtaken_reloc
45 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
46static bfd_reloc_status_type ppc64_elf_sectoff_reloc
47 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
48static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
49 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
50static bfd_reloc_status_type ppc64_elf_toc_reloc
51 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
52static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
53 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
54static bfd_reloc_status_type ppc64_elf_toc64_reloc
55 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
56static bfd_reloc_status_type ppc64_elf_unhandled_reloc
5bd4f169
AM		 57 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
58static boolean ppc64_elf_set_private_flags
59 PARAMS ((bfd *, flagword));
5bd4f169
AM		 60static boolean ppc64_elf_merge_private_bfd_data
61 PARAMS ((bfd *, bfd *));
62static boolean ppc64_elf_section_from_shdr
63 PARAMS ((bfd *, Elf64_Internal_Shdr *, char *));
5bd4f169
AM		 64
65
5bd4f169
AM		 66/* Mask to set RA in memory instructions. */
67#define RA_REGISTER_MASK 0x001f0000
68
69/* Value to shift register by to insert RA. */
70#define RA_REGISTER_SHIFT 16
71
72/* The name of the dynamic interpreter. This is put in the .interp
73 section. */
74#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
75
76/* The size in bytes of an entry in the procedure linkage table. */
77#define PLT_ENTRY_SIZE 24
78
79/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 80#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 81
82/* TOC base pointers offset from start of TOC. */
83#define TOC_BASE_OFF (0x8000)
84
5d1634d7
AM		 85/* .plt call stub instructions. */
86#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
87#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
88#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
89#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
90#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
91 /* ld %r11,xxx+16@l(%r12) */
92#define BCTR 0x4e800420 /* bctr */
93
94/* The normal stub is this size. */
95#define PLT_CALL_STUB_SIZE (7*4)
96
97/* But sometimes the .plt entry crosses a 64k boundary, and we need
98 to adjust the high word with this insn. */
99#define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
5bd4f169 100
5d1634d7
AM		 101/* The .glink fixup call stub is the same as the .plt call stub, but
102 the first instruction restores r2, and the std is omitted. */
103#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
104
105/* Always allow this much space. */
106#define GLINK_CALL_STUB_SIZE (8*4)
107
108/* Pad with this. */
109#define NOP 0x60000000
110
721956f4
AM		 111/* Some other nops. */
112#define CROR_151515 0x4def7b82
113#define CROR_313131 0x4ffffb82
114
5d1634d7
AM		 115/* .glink entries for the first 32k functions are two instructions. */
116#define LI_R0_0 0x38000000 /* li %r0,0 */
117#define B_DOT 0x48000000 /* b . */
118
119/* After that, we need two instructions to load the index, followed by
120 a branch. */
121#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 122#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 123
82bd7b59
AM		 124/* Instructions to save and restore floating point regs. */
125#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
126#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
127#define BLR 0x4e800020 /* blr */
128
41bd81ab
AM		 129/* Since .opd is an array of descriptors and each entry will end up
130 with identical R_PPC64_RELATIVE relocs, there is really no need to
131 propagate .opd relocs; The dynamic linker should be taught to
19397422
AM		 132 relocate .opd without reloc entries. FIXME: .opd should be trimmed
133 of unused values. */
41bd81ab
AM		 134#ifndef NO_OPD_RELOCS
135#define NO_OPD_RELOCS 0
136#endif
5bd4f169
AM		 137\f
138/* Relocation HOWTO's. */
139static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
140
141static reloc_howto_type ppc64_elf_howto_raw[] = {
142 /* This reloc does nothing. */
143 HOWTO (R_PPC64_NONE, /* type */
144 0, /* rightshift */
145 2, /* size (0 = byte, 1 = short, 2 = long) */
146 32, /* bitsize */
147 false, /* pc_relative */
148 0, /* bitpos */
149 complain_overflow_bitfield, /* complain_on_overflow */
150 bfd_elf_generic_reloc, /* special_function */
151 "R_PPC64_NONE", /* name */
152 false, /* partial_inplace */
153 0, /* src_mask */
154 0, /* dst_mask */
155 false), /* pcrel_offset */
156
157 /* A standard 32 bit relocation. */
158 HOWTO (R_PPC64_ADDR32, /* type */
159 0, /* rightshift */
160 2, /* size (0 = byte, 1 = short, 2 = long) */
161 32, /* bitsize */
162 false, /* pc_relative */
163 0, /* bitpos */
164 complain_overflow_bitfield, /* complain_on_overflow */
165 bfd_elf_generic_reloc, /* special_function */
166 "R_PPC64_ADDR32", /* name */
167 false, /* partial_inplace */
168 0, /* src_mask */
169 0xffffffff, /* dst_mask */
170 false), /* pcrel_offset */
171
172 /* An absolute 26 bit branch; the lower two bits must be zero.
173 FIXME: we don't check that, we just clear them. */
174 HOWTO (R_PPC64_ADDR24, /* type */
175 0, /* rightshift */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
177 26, /* bitsize */
178 false, /* pc_relative */
179 0, /* bitpos */
180 complain_overflow_bitfield, /* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_PPC64_ADDR24", /* name */
183 false, /* partial_inplace */
184 0, /* src_mask */
185 0x3fffffc, /* dst_mask */
186 false), /* pcrel_offset */
187
188 /* A standard 16 bit relocation. */
189 HOWTO (R_PPC64_ADDR16, /* type */
190 0, /* rightshift */
191 1, /* size (0 = byte, 1 = short, 2 = long) */
192 16, /* bitsize */
193 false, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_bitfield, /* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_PPC64_ADDR16", /* name */
198 false, /* partial_inplace */
199 0, /* src_mask */
200 0xffff, /* dst_mask */
201 false), /* pcrel_offset */
202
203 /* A 16 bit relocation without overflow. */
204 HOWTO (R_PPC64_ADDR16_LO, /* type */
205 0, /* rightshift */
206 1, /* size (0 = byte, 1 = short, 2 = long) */
207 16, /* bitsize */
208 false, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_dont,/* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_ADDR16_LO", /* name */
213 false, /* partial_inplace */
214 0, /* src_mask */
215 0xffff, /* dst_mask */
216 false), /* pcrel_offset */
217
218 /* Bits 16-31 of an address. */
219 HOWTO (R_PPC64_ADDR16_HI, /* type */
220 16, /* rightshift */
221 1, /* size (0 = byte, 1 = short, 2 = long) */
222 16, /* bitsize */
223 false, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_dont, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR16_HI", /* name */
228 false, /* partial_inplace */
229 0, /* src_mask */
230 0xffff, /* dst_mask */
231 false), /* pcrel_offset */
232
233 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
234 bits, treated as a signed number, is negative. */
235 HOWTO (R_PPC64_ADDR16_HA, /* type */
236 16, /* rightshift */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
238 16, /* bitsize */
239 false, /* pc_relative */
240 0, /* bitpos */
241 complain_overflow_dont, /* complain_on_overflow */
805fc799 242 ppc64_elf_ha_reloc, /* special_function */
5bd4f169
AM		 243 "R_PPC64_ADDR16_HA", /* name */
244 false, /* partial_inplace */
245 0, /* src_mask */
246 0xffff, /* dst_mask */
247 false), /* pcrel_offset */
248
249 /* An absolute 16 bit branch; the lower two bits must be zero.
250 FIXME: we don't check that, we just clear them. */
251 HOWTO (R_PPC64_ADDR14, /* type */
252 0, /* rightshift */
253 2, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
255 false, /* pc_relative */
256 0, /* bitpos */
257 complain_overflow_bitfield, /* complain_on_overflow */
258 bfd_elf_generic_reloc, /* special_function */
259 "R_PPC64_ADDR14", /* name */
260 false, /* partial_inplace */
261 0, /* src_mask */
262 0xfffc, /* dst_mask */
263 false), /* pcrel_offset */
264
265 /* An absolute 16 bit branch, for which bit 10 should be set to
266 indicate that the branch is expected to be taken. The lower two
267 bits must be zero. */
268 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
269 0, /* rightshift */
270 2, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 false, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 275 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 276 "R_PPC64_ADDR14_BRTAKEN",/* name */
277 false, /* partial_inplace */
278 0, /* src_mask */
279 0xfffc, /* dst_mask */
280 false), /* pcrel_offset */
281
282 /* An absolute 16 bit branch, for which bit 10 should be set to
283 indicate that the branch is not expected to be taken. The lower
284 two bits must be zero. */
285 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* 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 */
805fc799 292 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 293 "R_PPC64_ADDR14_BRNTAKEN",/* name */
294 false, /* partial_inplace */
295 0, /* src_mask */
296 0xfffc, /* dst_mask */
297 false), /* pcrel_offset */
298
299 /* A relative 26 bit branch; the lower two bits must be zero. */
300 HOWTO (R_PPC64_REL24, /* type */
301 0, /* rightshift */
302 2, /* size (0 = byte, 1 = short, 2 = long) */
303 26, /* bitsize */
304 true, /* pc_relative */
305 0, /* bitpos */
306 complain_overflow_signed, /* complain_on_overflow */
307 bfd_elf_generic_reloc, /* special_function */
308 "R_PPC64_REL24", /* name */
309 false, /* partial_inplace */
310 0, /* src_mask */
311 0x3fffffc, /* dst_mask */
312 true), /* pcrel_offset */
313
314 /* A relative 16 bit branch; the lower two bits must be zero. */
315 HOWTO (R_PPC64_REL14, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 16, /* bitsize */
319 true, /* pc_relative */
320 0, /* bitpos */
321 complain_overflow_signed, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_PPC64_REL14", /* name */
324 false, /* partial_inplace */
325 0, /* src_mask */
326 0xfffc, /* dst_mask */
327 true), /* pcrel_offset */
328
329 /* A relative 16 bit branch. Bit 10 should be set to indicate that
330 the branch is expected to be taken. The lower two bits must be
331 zero. */
332 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
333 0, /* rightshift */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
335 16, /* bitsize */
336 true, /* pc_relative */
337 0, /* bitpos */
338 complain_overflow_signed, /* complain_on_overflow */
805fc799 339 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 340 "R_PPC64_REL14_BRTAKEN", /* name */
341 false, /* partial_inplace */
342 0, /* src_mask */
343 0xfffc, /* dst_mask */
344 true), /* pcrel_offset */
345
346 /* A relative 16 bit branch. Bit 10 should be set to indicate that
347 the branch is not expected to be taken. The lower two bits must
348 be zero. */
349 HOWTO (R_PPC64_REL14_BRNTAKEN, /* 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 */
805fc799 356 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 357 "R_PPC64_REL14_BRNTAKEN",/* name */
358 false, /* partial_inplace */
359 0, /* src_mask */
360 0xfffc, /* dst_mask */
361 true), /* pcrel_offset */
362
363 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
364 symbol. */
365 HOWTO (R_PPC64_GOT16, /* type */
366 0, /* rightshift */
367 1, /* size (0 = byte, 1 = short, 2 = long) */
368 16, /* bitsize */
369 false, /* pc_relative */
370 0, /* bitpos */
371 complain_overflow_signed, /* complain_on_overflow */
805fc799 372 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 373 "R_PPC64_GOT16", /* name */
374 false, /* partial_inplace */
375 0, /* src_mask */
376 0xffff, /* dst_mask */
377 false), /* pcrel_offset */
378
379 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
380 the symbol. */
381 HOWTO (R_PPC64_GOT16_LO, /* type */
382 0, /* rightshift */
383 1, /* size (0 = byte, 1 = short, 2 = long) */
384 16, /* bitsize */
385 false, /* pc_relative */
386 0, /* bitpos */
387 complain_overflow_dont, /* complain_on_overflow */
805fc799 388 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 389 "R_PPC64_GOT16_LO", /* name */
390 false, /* partial_inplace */
391 0, /* src_mask */
392 0xffff, /* dst_mask */
393 false), /* pcrel_offset */
394
395 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
396 the symbol. */
397 HOWTO (R_PPC64_GOT16_HI, /* type */
398 16, /* rightshift */
399 1, /* size (0 = byte, 1 = short, 2 = long) */
400 16, /* bitsize */
401 false, /* pc_relative */
402 0, /* bitpos */
403 complain_overflow_dont,/* complain_on_overflow */
805fc799 404 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 405 "R_PPC64_GOT16_HI", /* name */
406 false, /* partial_inplace */
407 0, /* src_mask */
408 0xffff, /* dst_mask */
409 false), /* pcrel_offset */
410
411 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
412 the symbol. */
413 HOWTO (R_PPC64_GOT16_HA, /* type */
414 16, /* rightshift */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
416 16, /* bitsize */
417 false, /* pc_relative */
418 0, /* bitpos */
419 complain_overflow_dont,/* complain_on_overflow */
805fc799 420 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 421 "R_PPC64_GOT16_HA", /* name */
422 false, /* partial_inplace */
423 0, /* src_mask */
424 0xffff, /* dst_mask */
425 false), /* pcrel_offset */
426
427 /* This is used only by the dynamic linker. The symbol should exist
428 both in the object being run and in some shared library. The
429 dynamic linker copies the data addressed by the symbol from the
430 shared library into the object, because the object being
431 run has to have the data at some particular address. */
432 HOWTO (R_PPC64_COPY, /* type */
433 0, /* rightshift */
434 2, /* size (0 = byte, 1 = short, 2 = long) */
435 32, /* bitsize */
436 false, /* pc_relative */
437 0, /* bitpos */
438 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 439 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 440 "R_PPC64_COPY", /* name */
441 false, /* partial_inplace */
442 0, /* src_mask */
443 0, /* dst_mask */
444 false), /* pcrel_offset */
445
446 /* Like R_PPC64_ADDR64, but used when setting global offset table
447 entries. */
448 HOWTO (R_PPC64_GLOB_DAT, /* type */
449 0, /* rightshift */
450 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
451 64, /* bitsize */
452 false, /* pc_relative */
453 0, /* bitpos */
454 complain_overflow_dont, /* complain_on_overflow */
805fc799 455 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 456 "R_PPC64_GLOB_DAT", /* name */
457 false, /* partial_inplace */
458 0, /* src_mask */
459 0xffffffffffffffff, /* dst_mask */
460 false), /* pcrel_offset */
461
462 /* Created by the link editor. Marks a procedure linkage table
463 entry for a symbol. */
464 HOWTO (R_PPC64_JMP_SLOT, /* type */
465 0, /* rightshift */
466 0, /* size (0 = byte, 1 = short, 2 = long) */
467 0, /* bitsize */
468 false, /* pc_relative */
469 0, /* bitpos */
470 complain_overflow_dont, /* complain_on_overflow */
805fc799 471 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 472 "R_PPC64_JMP_SLOT", /* name */
473 false, /* partial_inplace */
474 0, /* src_mask */
475 0, /* dst_mask */
476 false), /* pcrel_offset */
477
478 /* Used only by the dynamic linker. When the object is run, this
479 doubleword64 is set to the load address of the object, plus the
480 addend. */
481 HOWTO (R_PPC64_RELATIVE, /* type */
482 0, /* rightshift */
483 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
484 64, /* bitsize */
805fc799 485 true, /* pc_relative */
5bd4f169
AM		 486 0, /* bitpos */
487 complain_overflow_dont, /* complain_on_overflow */
488 bfd_elf_generic_reloc, /* special_function */
489 "R_PPC64_RELATIVE", /* name */
490 false, /* partial_inplace */
491 0, /* src_mask */
492 0xffffffffffffffff, /* dst_mask */
805fc799 493 true), /* pcrel_offset */
5bd4f169
AM		 494
495 /* Like R_PPC64_ADDR32, but may be unaligned. */
496 HOWTO (R_PPC64_UADDR32, /* type */
497 0, /* rightshift */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
499 32, /* bitsize */
500 false, /* pc_relative */
501 0, /* bitpos */
502 complain_overflow_bitfield, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
504 "R_PPC64_UADDR32", /* name */
505 false, /* partial_inplace */
506 0, /* src_mask */
507 0xffffffff, /* dst_mask */
508 false), /* pcrel_offset */
509
510 /* Like R_PPC64_ADDR16, but may be unaligned. */
511 HOWTO (R_PPC64_UADDR16, /* type */
512 0, /* rightshift */
513 1, /* size (0 = byte, 1 = short, 2 = long) */
514 16, /* bitsize */
515 false, /* pc_relative */
516 0, /* bitpos */
517 complain_overflow_bitfield, /* complain_on_overflow */
518 bfd_elf_generic_reloc, /* special_function */
519 "R_PPC64_UADDR16", /* name */
520 false, /* partial_inplace */
521 0, /* src_mask */
522 0xffff, /* dst_mask */
523 false), /* pcrel_offset */
524
525 /* 32-bit PC relative. */
526 HOWTO (R_PPC64_REL32, /* type */
527 0, /* rightshift */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
529 32, /* bitsize */
530 true, /* pc_relative */
531 0, /* bitpos */
532 /* FIXME: Verify. Was complain_overflow_bitfield. */
533 complain_overflow_signed, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC64_REL32", /* name */
536 false, /* partial_inplace */
537 0, /* src_mask */
538 0xffffffff, /* dst_mask */
539 true), /* pcrel_offset */
540
10ed1bba 541 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 542 HOWTO (R_PPC64_PLT32, /* type */
543 0, /* rightshift */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
545 32, /* bitsize */
546 false, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 549 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 550 "R_PPC64_PLT32", /* name */
551 false, /* partial_inplace */
552 0, /* src_mask */
553 0, /* dst_mask */
554 false), /* pcrel_offset */
555
556 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
557 FIXME: R_PPC64_PLTREL32 not supported. */
558 HOWTO (R_PPC64_PLTREL32, /* type */
559 0, /* rightshift */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
561 32, /* bitsize */
562 true, /* pc_relative */
563 0, /* bitpos */
564 complain_overflow_signed, /* complain_on_overflow */
565 bfd_elf_generic_reloc, /* special_function */
566 "R_PPC64_PLTREL32", /* name */
567 false, /* partial_inplace */
568 0, /* src_mask */
569 0, /* dst_mask */
570 true), /* pcrel_offset */
571
572 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
573 the symbol. */
574 HOWTO (R_PPC64_PLT16_LO, /* type */
575 0, /* rightshift */
576 1, /* size (0 = byte, 1 = short, 2 = long) */
577 16, /* bitsize */
578 false, /* pc_relative */
579 0, /* bitpos */
580 complain_overflow_dont, /* complain_on_overflow */
805fc799 581 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 582 "R_PPC64_PLT16_LO", /* name */
583 false, /* partial_inplace */
584 0, /* src_mask */
585 0xffff, /* dst_mask */
586 false), /* pcrel_offset */
587
588 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
589 the symbol. */
590 HOWTO (R_PPC64_PLT16_HI, /* type */
591 16, /* rightshift */
592 1, /* size (0 = byte, 1 = short, 2 = long) */
593 16, /* bitsize */
594 false, /* pc_relative */
595 0, /* bitpos */
596 complain_overflow_dont, /* complain_on_overflow */
805fc799 597 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 598 "R_PPC64_PLT16_HI", /* name */
599 false, /* partial_inplace */
600 0, /* src_mask */
601 0xffff, /* dst_mask */
602 false), /* pcrel_offset */
603
604 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
605 the symbol. */
606 HOWTO (R_PPC64_PLT16_HA, /* type */
607 16, /* rightshift */
608 1, /* size (0 = byte, 1 = short, 2 = long) */
609 16, /* bitsize */
610 false, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_dont, /* complain_on_overflow */
805fc799 613 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 614 "R_PPC64_PLT16_HA", /* name */
615 false, /* partial_inplace */
616 0, /* src_mask */
617 0xffff, /* dst_mask */
618 false), /* pcrel_offset */
619
c061c2d8 620 /* 16-bit section relative relocation. */
5bd4f169
AM		 621 HOWTO (R_PPC64_SECTOFF, /* type */
622 0, /* rightshift */
c061c2d8
AM		 623 1, /* size (0 = byte, 1 = short, 2 = long) */
624 16, /* bitsize */
805fc799 625 false, /* pc_relative */
5bd4f169
AM		 626 0, /* bitpos */
627 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 628 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 629 "R_PPC64_SECTOFF", /* name */
630 false, /* partial_inplace */
631 0, /* src_mask */
c061c2d8 632 0xffff, /* dst_mask */
805fc799 633 false), /* pcrel_offset */
5bd4f169 634
c061c2d8 635 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 636 HOWTO (R_PPC64_SECTOFF_LO, /* type */
637 0, /* rightshift */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 false, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_dont, /* complain_on_overflow */
805fc799 643 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 644 "R_PPC64_SECTOFF_LO", /* name */
645 false, /* partial_inplace */
646 0, /* src_mask */
647 0xffff, /* dst_mask */
648 false), /* pcrel_offset */
649
650 /* 16-bit upper half section relative relocation. */
651 HOWTO (R_PPC64_SECTOFF_HI, /* type */
652 16, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 false, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
805fc799 658 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 659 "R_PPC64_SECTOFF_HI", /* name */
660 false, /* partial_inplace */
661 0, /* src_mask */
662 0xffff, /* dst_mask */
663 false), /* pcrel_offset */
664
665 /* 16-bit upper half adjusted section relative relocation. */
666 HOWTO (R_PPC64_SECTOFF_HA, /* type */
667 16, /* rightshift */
668 1, /* size (0 = byte, 1 = short, 2 = long) */
669 16, /* bitsize */
670 false, /* pc_relative */
671 0, /* bitpos */
672 complain_overflow_dont, /* complain_on_overflow */
805fc799 673 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169
AM		 674 "R_PPC64_SECTOFF_HA", /* name */
675 false, /* partial_inplace */
676 0, /* src_mask */
677 0xffff, /* dst_mask */
678 false), /* pcrel_offset */
679
680 /* Like R_PPC64_REL24 without touching the two least significant
805fc799 681 bits. Should have been named R_PPC64_REL30! */
5bd4f169
AM		 682 HOWTO (R_PPC64_ADDR30, /* type */
683 2, /* rightshift */
684 2, /* size (0 = byte, 1 = short, 2 = long) */
685 30, /* bitsize */
686 true, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_dont, /* complain_on_overflow */
689 bfd_elf_generic_reloc, /* special_function */
690 "R_PPC64_ADDR30", /* name */
691 false, /* partial_inplace */
692 0, /* src_mask */
693 0xfffffffc, /* dst_mask */
694 true), /* pcrel_offset */
695
696 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
697
698 /* A standard 64-bit relocation. */
699 HOWTO (R_PPC64_ADDR64, /* type */
700 0, /* rightshift */
701 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
702 64, /* bitsize */
703 false, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_dont, /* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_PPC64_ADDR64", /* name */
708 false, /* partial_inplace */
709 0, /* src_mask */
710 0xffffffffffffffff, /* dst_mask */
711 false), /* pcrel_offset */
712
713 /* The bits 32-47 of an address. */
714 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
715 32, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 false, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 "R_PPC64_ADDR16_HIGHER", /* name */
723 false, /* partial_inplace */
724 0, /* src_mask */
725 0xffff, /* dst_mask */
726 false), /* pcrel_offset */
727
728 /* The bits 32-47 of an address, plus 1 if the contents of the low
729 16 bits, treated as a signed number, is negative. */
730 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
731 32, /* rightshift */
732 1, /* size (0 = byte, 1 = short, 2 = long) */
733 16, /* bitsize */
734 false, /* pc_relative */
735 0, /* bitpos */
736 complain_overflow_dont, /* complain_on_overflow */
805fc799 737 ppc64_elf_ha_reloc, /* special_function */
5bd4f169
AM		 738 "R_PPC64_ADDR16_HIGHERA", /* name */
739 false, /* partial_inplace */
740 0, /* src_mask */
741 0xffff, /* dst_mask */
742 false), /* pcrel_offset */
743
744 /* The bits 48-63 of an address. */
745 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
746 48, /* rightshift */
747 1, /* size (0 = byte, 1 = short, 2 = long) */
748 16, /* bitsize */
749 false, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_dont, /* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 "R_PPC64_ADDR16_HIGHEST", /* name */
754 false, /* partial_inplace */
755 0, /* src_mask */
756 0xffff, /* dst_mask */
757 false), /* pcrel_offset */
758
759 /* The bits 48-63 of an address, plus 1 if the contents of the low
760 16 bits, treated as a signed number, is negative. */
761 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
762 48, /* rightshift */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 false, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_dont, /* complain_on_overflow */
805fc799 768 ppc64_elf_ha_reloc, /* special_function */
5bd4f169
AM		 769 "R_PPC64_ADDR16_HIGHESTA", /* name */
770 false, /* partial_inplace */
771 0, /* src_mask */
772 0xffff, /* dst_mask */
773 false), /* pcrel_offset */
774
775 /* Like ADDR64, but may be unaligned. */
776 HOWTO (R_PPC64_UADDR64, /* type */
777 0, /* rightshift */
778 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
779 64, /* bitsize */
780 false, /* pc_relative */
781 0, /* bitpos */
782 complain_overflow_dont, /* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_PPC64_UADDR64", /* name */
785 false, /* partial_inplace */
786 0, /* src_mask */
787 0xffffffffffffffff, /* dst_mask */
788 false), /* pcrel_offset */
789
790 /* 64-bit relative relocation. */
791 HOWTO (R_PPC64_REL64, /* type */
792 0, /* rightshift */
793 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
794 64, /* bitsize */
795 true, /* pc_relative */
796 0, /* bitpos */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC64_REL64", /* name */
800 false, /* partial_inplace */
801 0, /* src_mask */
802 0xffffffffffffffff, /* dst_mask */
803 true), /* pcrel_offset */
804
805 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 806 HOWTO (R_PPC64_PLT64, /* type */
807 0, /* rightshift */
808 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
809 64, /* bitsize */
810 false, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
805fc799 813 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 814 "R_PPC64_PLT64", /* name */
815 false, /* partial_inplace */
816 0, /* src_mask */
817 0, /* dst_mask */
818 false), /* pcrel_offset */
819
820 /* 64-bit PC relative relocation to the symbol's procedure linkage
821 table. */
822 /* FIXME: R_PPC64_PLTREL64 not supported. */
823 HOWTO (R_PPC64_PLTREL64, /* type */
824 0, /* rightshift */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
826 64, /* bitsize */
827 true, /* pc_relative */
828 0, /* bitpos */
829 complain_overflow_dont, /* complain_on_overflow */
805fc799 830 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 831 "R_PPC64_PLTREL64", /* name */
832 false, /* partial_inplace */
833 0, /* src_mask */
834 0, /* dst_mask */
835 true), /* pcrel_offset */
836
837 /* 16 bit TOC-relative relocation. */
838
839 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
840 HOWTO (R_PPC64_TOC16, /* type */
841 0, /* rightshift */
842 1, /* size (0 = byte, 1 = short, 2 = long) */
843 16, /* bitsize */
844 false, /* pc_relative */
845 0, /* bitpos */
846 complain_overflow_signed, /* complain_on_overflow */
805fc799 847 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 848 "R_PPC64_TOC16", /* name */
849 false, /* partial_inplace */
850 0, /* src_mask */
851 0xffff, /* dst_mask */
852 false), /* pcrel_offset */
853
854 /* 16 bit TOC-relative relocation without overflow. */
855
856 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
857 HOWTO (R_PPC64_TOC16_LO, /* type */
858 0, /* rightshift */
859 1, /* size (0 = byte, 1 = short, 2 = long) */
860 16, /* bitsize */
861 false, /* pc_relative */
862 0, /* bitpos */
863 complain_overflow_dont, /* complain_on_overflow */
805fc799 864 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 865 "R_PPC64_TOC16_LO", /* name */
866 false, /* partial_inplace */
867 0, /* src_mask */
868 0xffff, /* dst_mask */
869 false), /* pcrel_offset */
870
871 /* 16 bit TOC-relative relocation, high 16 bits. */
872
873 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
874 HOWTO (R_PPC64_TOC16_HI, /* type */
875 16, /* rightshift */
876 1, /* size (0 = byte, 1 = short, 2 = long) */
877 16, /* bitsize */
878 false, /* pc_relative */
879 0, /* bitpos */
880 complain_overflow_dont, /* complain_on_overflow */
805fc799 881 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 882 "R_PPC64_TOC16_HI", /* name */
883 false, /* partial_inplace */
884 0, /* src_mask */
885 0xffff, /* dst_mask */
886 false), /* pcrel_offset */
887
888 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
889 contents of the low 16 bits, treated as a signed number, is
890 negative. */
891
892 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
893 HOWTO (R_PPC64_TOC16_HA, /* type */
894 16, /* rightshift */
895 1, /* size (0 = byte, 1 = short, 2 = long) */
896 16, /* bitsize */
897 false, /* pc_relative */
898 0, /* bitpos */
899 complain_overflow_dont, /* complain_on_overflow */
805fc799 900 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169
AM		 901 "R_PPC64_TOC16_HA", /* name */
902 false, /* partial_inplace */
903 0, /* src_mask */
904 0xffff, /* dst_mask */
905 false), /* pcrel_offset */
906
907 /* 64-bit relocation; insert value of TOC base (.TOC.). */
908
909 /* R_PPC64_TOC 51 doubleword64 .TOC. */
910 HOWTO (R_PPC64_TOC, /* type */
911 0, /* rightshift */
912 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
913 64, /* bitsize */
914 false, /* pc_relative */
915 0, /* bitpos */
916 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 917 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169
AM		 918 "R_PPC64_TOC", /* name */
919 false, /* partial_inplace */
920 0, /* src_mask */
921 0xffffffffffffffff, /* dst_mask */
922 false), /* pcrel_offset */
923
924 /* Like R_PPC64_GOT16, but also informs the link editor that the
925 value to relocate may (!) refer to a PLT entry which the link
926 editor (a) may replace with the symbol value. If the link editor
927 is unable to fully resolve the symbol, it may (b) create a PLT
928 entry and store the address to the new PLT entry in the GOT.
929 This permits lazy resolution of function symbols at run time.
930 The link editor may also skip all of this and just (c) emit a
931 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
932 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
933 HOWTO (R_PPC64_PLTGOT16, /* type */
934 0, /* rightshift */
935 1, /* size (0 = byte, 1 = short, 2 = long) */
936 16, /* bitsize */
937 false, /* pc_relative */
938 0, /* bitpos */
939 complain_overflow_signed, /* complain_on_overflow */
805fc799 940 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 941 "R_PPC64_PLTGOT16", /* name */
942 false, /* partial_inplace */
943 0, /* src_mask */
944 0xffff, /* dst_mask */
945 false), /* pcrel_offset */
946
947 /* Like R_PPC64_PLTGOT16, but without overflow. */
948 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
949 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
950 0, /* rightshift */
951 1, /* size (0 = byte, 1 = short, 2 = long) */
952 16, /* bitsize */
953 false, /* pc_relative */
954 0, /* bitpos */
955 complain_overflow_dont, /* complain_on_overflow */
805fc799 956 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 957 "R_PPC64_PLTGOT16_LO", /* name */
958 false, /* partial_inplace */
959 0, /* src_mask */
960 0xffff, /* dst_mask */
961 false), /* pcrel_offset */
962
963 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
964 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
965 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
966 16, /* rightshift */
967 1, /* size (0 = byte, 1 = short, 2 = long) */
968 16, /* bitsize */
969 false, /* pc_relative */
970 0, /* bitpos */
971 complain_overflow_dont, /* complain_on_overflow */
805fc799 972 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 973 "R_PPC64_PLTGOT16_HI", /* name */
974 false, /* partial_inplace */
975 0, /* src_mask */
976 0xffff, /* dst_mask */
977 false), /* pcrel_offset */
978
979 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
980 1 if the contents of the low 16 bits, treated as a signed number,
981 is negative. */
982 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
983 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
984 16, /* rightshift */
985 1, /* size (0 = byte, 1 = short, 2 = long) */
986 16, /* bitsize */
987 false, /* pc_relative */
988 0, /* bitpos */
989 complain_overflow_dont,/* complain_on_overflow */
805fc799 990 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 991 "R_PPC64_PLTGOT16_HA", /* name */
992 false, /* partial_inplace */
993 0, /* src_mask */
994 0xffff, /* dst_mask */
995 false), /* pcrel_offset */
996
997 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
998 HOWTO (R_PPC64_ADDR16_DS, /* type */
999 0, /* rightshift */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 16, /* bitsize */
1002 false, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_bitfield, /* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_PPC64_ADDR16_DS", /* name */
1007 false, /* partial_inplace */
1008 0, /* src_mask */
1009 0xfffc, /* dst_mask */
1010 false), /* pcrel_offset */
1011
1012 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1013 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1014 0, /* rightshift */
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1016 16, /* bitsize */
1017 false, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_dont,/* complain_on_overflow */
1020 bfd_elf_generic_reloc, /* special_function */
1021 "R_PPC64_ADDR16_LO_DS",/* name */
1022 false, /* partial_inplace */
1023 0, /* src_mask */
1024 0xfffc, /* dst_mask */
1025 false), /* pcrel_offset */
1026
1027 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1028 HOWTO (R_PPC64_GOT16_DS, /* type */
1029 0, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 16, /* bitsize */
1032 false, /* pc_relative */
1033 0, /* bitpos */
1034 complain_overflow_signed, /* complain_on_overflow */
805fc799 1035 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1036 "R_PPC64_GOT16_DS", /* name */
1037 false, /* partial_inplace */
1038 0, /* src_mask */
1039 0xfffc, /* dst_mask */
1040 false), /* pcrel_offset */
1041
1042 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1043 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1044 0, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 false, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_dont, /* complain_on_overflow */
805fc799 1050 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1051 "R_PPC64_GOT16_LO_DS", /* name */
1052 false, /* partial_inplace */
1053 0, /* src_mask */
1054 0xfffc, /* dst_mask */
1055 false), /* pcrel_offset */
1056
1057 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 false, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont, /* complain_on_overflow */
805fc799 1065 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1066 "R_PPC64_PLT16_LO_DS", /* name */
1067 false, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 false), /* pcrel_offset */
1071
1072 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
5bd4f169
AM		 1073 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1074 0, /* rightshift */
c061c2d8
AM		 1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
805fc799 1077 false, /* pc_relative */
5bd4f169
AM		 1078 0, /* bitpos */
1079 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 1080 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 1081 "R_PPC64_SECTOFF_DS", /* name */
1082 false, /* partial_inplace */
1083 0, /* src_mask */
c061c2d8 1084 0xfffc, /* dst_mask */
805fc799 1085 false), /* pcrel_offset */
5bd4f169
AM		 1086
1087 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 false, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
805fc799 1095 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 1096 "R_PPC64_SECTOFF_LO_DS",/* name */
1097 false, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 false), /* pcrel_offset */
1101
1102 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_TOC16_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 false, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_signed, /* complain_on_overflow */
805fc799 1110 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 1111 "R_PPC64_TOC16_DS", /* name */
1112 false, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 false), /* pcrel_offset */
1116
1117 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 false, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_dont, /* complain_on_overflow */
805fc799 1125 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 1126 "R_PPC64_TOC16_LO_DS", /* name */
1127 false, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 false), /* pcrel_offset */
1131
1132 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1133 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1134 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1135 0, /* rightshift */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1137 16, /* bitsize */
1138 false, /* pc_relative */
1139 0, /* bitpos */
1140 complain_overflow_signed, /* complain_on_overflow */
805fc799 1141 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1142 "R_PPC64_PLTGOT16_DS", /* name */
1143 false, /* partial_inplace */
1144 0, /* src_mask */
1145 0xfffc, /* dst_mask */
1146 false), /* pcrel_offset */
1147
1148 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1149 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1150 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1151 0, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 false, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_dont, /* complain_on_overflow */
805fc799 1157 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1158 "R_PPC64_PLTGOT16_LO_DS",/* name */
1159 false, /* partial_inplace */
1160 0, /* src_mask */
1161 0xfffc, /* dst_mask */
1162 false), /* pcrel_offset */
1163
1164 /* GNU extension to record C++ vtable hierarchy. */
1165 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1166 0, /* rightshift */
1167 0, /* size (0 = byte, 1 = short, 2 = long) */
1168 0, /* bitsize */
1169 false, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 NULL, /* special_function */
1173 "R_PPC64_GNU_VTINHERIT", /* name */
1174 false, /* partial_inplace */
1175 0, /* src_mask */
1176 0, /* dst_mask */
1177 false), /* pcrel_offset */
1178
1179 /* GNU extension to record C++ vtable member usage. */
1180 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1181 0, /* rightshift */
1182 0, /* size (0 = byte, 1 = short, 2 = long) */
1183 0, /* bitsize */
1184 false, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont, /* complain_on_overflow */
1187 NULL, /* special_function */
1188 "R_PPC64_GNU_VTENTRY", /* name */
1189 false, /* partial_inplace */
1190 0, /* src_mask */
1191 0, /* dst_mask */
1192 false), /* pcrel_offset */
1193};
1194
1195\f
1196/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1197 be done. */
1198
1199static void
1200ppc_howto_init ()
1201{
1202 unsigned int i, type;
1203
1204 for (i = 0;
1205 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1206 i++)
1207 {
1208 type = ppc64_elf_howto_raw[i].type;
1209 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1210 / sizeof (ppc64_elf_howto_table[0])));
1211 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1212 }
1213}
1214
1215static reloc_howto_type *
1216ppc64_elf_reloc_type_lookup (abfd, code)
1217 bfd *abfd ATTRIBUTE_UNUSED;
1218 bfd_reloc_code_real_type code;
1219{
1220 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1221
1222 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1223 /* Initialize howto table if needed. */
1224 ppc_howto_init ();
1225
1226 switch ((int) code)
1227 {
1228 default:
1229 return (reloc_howto_type *) NULL;
1230
1231 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1232 break;
1233 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1234 break;
1235 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1236 break;
1237 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1238 break;
1239 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1240 break;
1241 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1242 break;
1243 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1244 break;
1245 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1246 break;
1247 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1248 break;
1249 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1250 break;
1251 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1252 break;
1253 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1254 break;
1255 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1256 break;
1257 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1258 break;
1259 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1260 break;
1261 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1262 break;
1263 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1264 break;
1265 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1266 break;
1267 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1268 break;
1269 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1270 break;
1271 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1272 break;
1273 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1274 break;
1275 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1276 break;
1277 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1278 break;
1279 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1280 break;
1281 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1282 break;
c061c2d8 1283 case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
5bd4f169
AM		 1284 break;
1285 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1286 break;
1287 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1288 break;
1289 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1290 break;
10ed1bba 1291 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
5bd4f169
AM		 1292 break;
1293 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1294 break;
1295 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1296 break;
1297 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1298 break;
1299 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1300 break;
1301 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1302 break;
1303 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1304 break;
1305 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1306 break;
1307 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1308 break;
1309 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1310 break;
1311 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1312 break;
1313 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1314 break;
1315 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1316 break;
1317 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1318 break;
1319 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1320 break;
1321 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1322 break;
1323 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1324 break;
1325 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1326 break;
1327 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1328 break;
1329 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1330 break;
1331 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1332 break;
1333 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1334 break;
1335 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1336 break;
1337 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1338 break;
1339 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1340 break;
1341 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1342 break;
1343 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1344 break;
1345 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1346 break;
1347 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1348 break;
1349 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1350 break;
1351 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1352 break;
1353 }
1354
1355 return ppc64_elf_howto_table[(int) ppc_reloc];
1356};
1357
1358/* Set the howto pointer for a PowerPC ELF reloc. */
1359
1360static void
1361ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1362 bfd *abfd ATTRIBUTE_UNUSED;
1363 arelent *cache_ptr;
1364 Elf64_Internal_Rela *dst;
1365{
65f38f15
AM		 1366 unsigned int type;
1367
5bd4f169
AM		 1368 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1369 /* Initialize howto table if needed. */
1370 ppc_howto_init ();
1371
65f38f15
AM		 1372 type = ELF64_R_TYPE (dst->r_info);
1373 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1374 / sizeof (ppc64_elf_howto_table[0])));
1375 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 1376}
1377
65f38f15 1378/* Handle the R_PPC_ADDR16_HA and similar relocs. */
5bd4f169
AM		 1379
1380static bfd_reloc_status_type
805fc799
AM		 1381ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data,
1382 input_section, output_bfd, error_message)
1383 bfd *abfd;
5bd4f169
AM		 1384 arelent *reloc_entry;
1385 asymbol *symbol;
805fc799 1386 PTR data;
5bd4f169
AM		 1387 asection *input_section;
1388 bfd *output_bfd;
805fc799 1389 char **error_message;
5bd4f169 1390{
805fc799
AM		 1391 /* If this is a relocatable link (output_bfd test tells us), just
1392 call the generic function. Any adjustment will be done at final
1393 link time. */
1394 if (output_bfd != NULL)
1395 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1396 input_section, output_bfd, error_message);
1397
1398 /* Adjust the addend for sign extension of the low 16 bits.
1399 We won't actually be using the low 16 bits, so trashing them
1400 doesn't matter. */
1401 reloc_entry->addend += 0x8000;
1402 return bfd_reloc_continue;
1403}
5bd4f169 1404
805fc799
AM		 1405static bfd_reloc_status_type
1406ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data,
1407 input_section, output_bfd, error_message)
1408 bfd *abfd;
1409 arelent *reloc_entry;
1410 asymbol *symbol;
1411 PTR data;
1412 asection *input_section;
1413 bfd *output_bfd;
1414 char **error_message;
1415{
1416 long insn;
1417 enum elf_ppc_reloc_type r_type;
1418 bfd_size_type octets;
1419 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
1420 boolean is_power4 = false;
1421
1422 /* If this is a relocatable link (output_bfd test tells us), just
1423 call the generic function. Any adjustment will be done at final
1424 link time. */
5bd4f169 1425 if (output_bfd != NULL)
805fc799
AM		 1426 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1427 input_section, output_bfd, error_message);
1428
1429 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
1430 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
1431 insn &= ~(0x01 << 21);
1432 r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type;
1433 if (r_type == R_PPC64_ADDR14_BRTAKEN
1434 || r_type == R_PPC64_REL14_BRTAKEN)
1435 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
1436
1437 if (is_power4)
5bd4f169 1438 {
805fc799
AM		 1439 /* Set 'a' bit. This is 0b00010 in BO field for branch
1440 on CR(BI) insns (BO == 001at or 011at), and 0b01000
1441 for branch on CTR insns (BO == 1a00t or 1a01t). */
1442 if ((insn & (0x14 << 21)) == (0x04 << 21))
1443 insn |= 0x02 << 21;
1444 else if ((insn & (0x14 << 21)) == (0x10 << 21))
1445 insn |= 0x08 << 21;
1446 else
1447 return bfd_reloc_continue;
5bd4f169 1448 }
805fc799
AM		 1449 else
1450 {
1451 bfd_vma target = 0;
1452 bfd_vma from;
5bd4f169 1453
805fc799
AM		 1454 if (!bfd_is_com_section (symbol->section))
1455 target = symbol->value;
1456 target += symbol->section->output_section->vma;
1457 target += symbol->section->output_offset;
1458 target += reloc_entry->addend;
5bd4f169 1459
805fc799
AM		 1460 from = (reloc_entry->address
1461 + input_section->output_offset
1462 + input_section->output_section->vma);
5bd4f169 1463
805fc799
AM		 1464 /* Invert 'y' bit if not the default. */
1465 if ((bfd_signed_vma) (target - from) < 0)
1466 insn ^= 0x01 << 21;
1467 }
1468 bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets);
1469 return bfd_reloc_continue;
1470}
5bd4f169 1471
805fc799
AM		 1472static bfd_reloc_status_type
1473ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data,
1474 input_section, output_bfd, error_message)
1475 bfd *abfd;
1476 arelent *reloc_entry;
1477 asymbol *symbol;
1478 PTR data;
1479 asection *input_section;
1480 bfd *output_bfd;
1481 char **error_message;
1482{
1483 /* If this is a relocatable link (output_bfd test tells us), just
1484 call the generic function. Any adjustment will be done at final
1485 link time. */
1486 if (output_bfd != NULL)
1487 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1488 input_section, output_bfd, error_message);
5bd4f169 1489
805fc799
AM		 1490 /* Subtract the symbol section base address. */
1491 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 1492 return bfd_reloc_continue;
1493}
1494
805fc799
AM		 1495static bfd_reloc_status_type
1496ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data,
1497 input_section, output_bfd, error_message)
1498 bfd *abfd;
1499 arelent *reloc_entry;
1500 asymbol *symbol;
1501 PTR data;
1502 asection *input_section;
1503 bfd *output_bfd;
1504 char **error_message;
1505{
1506 /* If this is a relocatable link (output_bfd test tells us), just
1507 call the generic function. Any adjustment will be done at final
1508 link time. */
1509 if (output_bfd != NULL)
1510 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1511 input_section, output_bfd, error_message);
1512
1513 /* Subtract the symbol section base address. */
1514 reloc_entry->addend -= symbol->section->output_section->vma;
1515
1516 /* Adjust the addend for sign extension of the low 16 bits. */
1517 reloc_entry->addend += 0x8000;
1518 return bfd_reloc_continue;
1519}
1520
1521static bfd_reloc_status_type
1522ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data,
1523 input_section, output_bfd, error_message)
1524 bfd *abfd;
1525 arelent *reloc_entry;
1526 asymbol *symbol;
1527 PTR data;
1528 asection *input_section;
1529 bfd *output_bfd;
1530 char **error_message;
1531{
1532 bfd_vma TOCstart;
1533
1534 /* If this is a relocatable link (output_bfd test tells us), just
1535 call the generic function. Any adjustment will be done at final
1536 link time. */
1537 if (output_bfd != NULL)
1538 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1539 input_section, output_bfd, error_message);
1540
1541 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1542 if (TOCstart == 0)
1543 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1544
1545 /* Subtract the TOC base address. */
1546 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
1547 return bfd_reloc_continue;
1548}
1549
1550static bfd_reloc_status_type
1551ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data,
1552 input_section, output_bfd, error_message)
1553 bfd *abfd;
1554 arelent *reloc_entry;
1555 asymbol *symbol;
1556 PTR data;
1557 asection *input_section;
1558 bfd *output_bfd;
1559 char **error_message;
1560{
1561 bfd_vma TOCstart;
1562
1563 /* If this is a relocatable link (output_bfd test tells us), just
1564 call the generic function. Any adjustment will be done at final
1565 link time. */
1566 if (output_bfd != NULL)
1567 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1568 input_section, output_bfd, error_message);
1569
1570 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1571 if (TOCstart == 0)
1572 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1573
1574 /* Subtract the TOC base address. */
1575 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
1576
1577 /* Adjust the addend for sign extension of the low 16 bits. */
1578 reloc_entry->addend += 0x8000;
1579 return bfd_reloc_continue;
1580}
1581
1582static bfd_reloc_status_type
1583ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data,
1584 input_section, output_bfd, error_message)
1585 bfd *abfd;
1586 arelent *reloc_entry;
1587 asymbol *symbol;
1588 PTR data;
1589 asection *input_section;
1590 bfd *output_bfd;
1591 char **error_message;
1592{
1593 bfd_vma TOCstart;
1594 bfd_size_type octets;
1595
1596 /* If this is a relocatable link (output_bfd test tells us), just
1597 call the generic function. Any adjustment will be done at final
1598 link time. */
1599 if (output_bfd != NULL)
1600 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1601 input_section, output_bfd, error_message);
1602
1603 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1604 if (TOCstart == 0)
1605 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1606
1607 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
1608 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
1609 return bfd_reloc_ok;
1610}
1611
1612static bfd_reloc_status_type
1613ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data,
1614 input_section, output_bfd, error_message)
1615 bfd *abfd;
1616 arelent *reloc_entry;
1617 asymbol *symbol;
1618 PTR data;
1619 asection *input_section;
1620 bfd *output_bfd;
1621 char **error_message;
1622{
1623 /* If this is a relocatable link (output_bfd test tells us), just
1624 call the generic function. Any adjustment will be done at final
1625 link time. */
1626 if (output_bfd != NULL)
1627 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1628 input_section, output_bfd, error_message);
1629
1630 if (error_message != NULL)
1631 {
1632 static char buf[60];
1633 sprintf (buf, "generic linker can't handle %s",
1634 reloc_entry->howto->name);
1635 *error_message = buf;
1636 }
1637 return bfd_reloc_dangerous;
1638}
1639
5bd4f169
AM		 1640/* Function to set whether a module needs the -mrelocatable bit set. */
1641
1642static boolean
1643ppc64_elf_set_private_flags (abfd, flags)
1644 bfd *abfd;
1645 flagword flags;
1646{
1647 BFD_ASSERT (!elf_flags_init (abfd)
1648 || elf_elfheader (abfd)->e_flags == flags);
1649
1650 elf_elfheader (abfd)->e_flags = flags;
1651 elf_flags_init (abfd) = true;
1652 return true;
1653}
1654
5bd4f169
AM		 1655/* Merge backend specific data from an object file to the output
1656 object file when linking. */
1657static boolean
1658ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1659 bfd *ibfd;
1660 bfd *obfd;
1661{
1662 flagword old_flags;
1663 flagword new_flags;
1664 boolean error;
1665
1666 /* Check if we have the same endianess. */
1667 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1668 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1669 {
1670 const char *msg;
1671
1672 if (bfd_big_endian (ibfd))
1673 msg = _("%s: compiled for a big endian system and target is little endian");
1674 else
1675 msg = _("%s: compiled for a little endian system and target is big endian");
1676
8f615d07 1677 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
5bd4f169
AM		 1678
1679 bfd_set_error (bfd_error_wrong_format);
1680 return false;
1681 }
1682
1683 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1684 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1685 return true;
1686
1687 new_flags = elf_elfheader (ibfd)->e_flags;
1688 old_flags = elf_elfheader (obfd)->e_flags;
1689 if (!elf_flags_init (obfd))
1690 {
1691 /* First call, no flags set. */
1692 elf_flags_init (obfd) = true;
1693 elf_elfheader (obfd)->e_flags = new_flags;
1694 }
1695
1696 else if (new_flags == old_flags)
1697 /* Compatible flags are ok. */
1698 ;
1699
1700 else
1701 {
1702 /* Incompatible flags. Warn about -mrelocatable mismatch.
1703 Allow -mrelocatable-lib to be linked with either. */
1704 error = false;
1705 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1706 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1707 {
1708 error = true;
1709 (*_bfd_error_handler)
1710 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
8f615d07 1711 bfd_archive_filename (ibfd));
5bd4f169
AM		 1712 }
1713 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1714 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1715 {
1716 error = true;
1717 (*_bfd_error_handler)
1718 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
8f615d07 1719 bfd_archive_filename (ibfd));
5bd4f169
AM		 1720 }
1721
1722 /* The output is -mrelocatable-lib iff both the input files are. */
1723 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1724 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1725
1726 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1727 but each input file is either -mrelocatable or -mrelocatable-lib. */
1728 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1729 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1730 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1731 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1732
1733 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit
1734 if any module uses it. */
1735 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1736
1737 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1738 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1739
1740 /* Warn about any other mismatches. */
1741 if (new_flags != old_flags)
1742 {
1743 error = true;
1744 (*_bfd_error_handler)
1745 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
8f615d07 1746 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
5bd4f169
AM		 1747 }
1748
1749 if (error)
1750 {
1751 bfd_set_error (bfd_error_bad_value);
1752 return false;
1753 }
1754 }
1755
1756 return true;
1757}
1758
1759/* Handle a PowerPC specific section when reading an object file. This
1760 is called when elfcode.h finds a section with an unknown type. */
1761
1762static boolean
1763ppc64_elf_section_from_shdr (abfd, hdr, name)
1764 bfd *abfd;
1765 Elf64_Internal_Shdr *hdr;
1766 char *name;
1767{
1768 asection *newsect;
1769 flagword flags;
1770
1771 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1772 return false;
1773
1774 newsect = hdr->bfd_section;
1775 flags = bfd_get_section_flags (abfd, newsect);
1776 if (hdr->sh_flags & SHF_EXCLUDE)
1777 flags |= SEC_EXCLUDE;
1778
1779 if (hdr->sh_type == SHT_ORDERED)
1780 flags |= SEC_SORT_ENTRIES;
1781
1782 bfd_set_section_flags (abfd, newsect, flags);
1783 return true;
1784}
1785\f
65f38f15
AM		 1786/* The following functions are specific to the ELF linker, while
1787 functions above are used generally. Those named ppc64_elf_* are
1788 called by the main ELF linker code. They appear in this file more
1789 or less in the order in which they are called. eg.
1790 ppc64_elf_check_relocs is called early in the link process,
1791 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 1792 called.
1793
1794 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
1795 functions have both a function code symbol and a function descriptor
1796 symbol. A call to foo in a relocatable object file looks like:
1797
1798 . .text
1799 . x:
1800 . bl .foo
1801 . nop
1802
1803 The function definition in another object file might be:
1804
1805 . .section .opd
1806 . foo: .quad .foo
1807 . .quad .TOC.@tocbase
1808 . .quad 0
1809 .
1810 . .text
1811 . .foo: blr
1812
1813 When the linker resolves the call during a static link, the branch
1814 unsurprisingly just goes to .foo and the .opd information is unused.
1815 If the function definition is in a shared library, things are a little
1816 different: The call goes via a plt call stub, the opd information gets
1817 copied to the plt, and the linker patches the nop.
1818
1819 . x:
1820 . bl .foo_stub
1821 . ld 2,40(1)
1822 .
1823 .
1824 . .foo_stub:
1825 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
1826 . addi 12,12,Lfoo@toc@l # is slightly optimised, but
1827 . std 2,40(1) # this is the general idea
1828 . ld 11,0(12)
1829 . ld 2,8(12)
1830 . mtctr 11
1831 . ld 11,16(12)
1832 . bctr
1833 .
1834 . .section .plt
1835 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
1836
1837 The "reloc ()" notation is supposed to indicate that the linker emits
1838 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
1839 copying.
1840
1841 What are the difficulties here? Well, firstly, the relocations
1842 examined by the linker in check_relocs are against the function code
1843 sym .foo, while the dynamic relocation in the plt is emitted against
1844 the function descriptor symbol, foo. Somewhere along the line, we need
1845 to carefully copy dynamic link information from one symbol to the other.
1846 Secondly, the generic part of the elf linker will make .foo a dynamic
1847 symbol as is normal for most other backends. We need foo dynamic
1848 instead, at least for an application final link. However, when
1849 creating a shared library containing foo, we need to have both symbols
1850 dynamic so that references to .foo are satisfied during the early
1851 stages of linking. Otherwise the linker might decide to pull in a
41bd81ab 1852 definition from some other object, eg. a static library. */
65f38f15
AM		 1853
1854/* The linker needs to keep track of the number of relocs that it
1855 decides to copy as dynamic relocs in check_relocs for each symbol.
1856 This is so that it can later discard them if they are found to be
1857 unnecessary. We store the information in a field extending the
1858 regular ELF linker hash table. */
1859
1860struct ppc_dyn_relocs
1861{
1862 struct ppc_dyn_relocs *next;
1863
1864 /* The input section of the reloc. */
1865 asection *sec;
1866
1867 /* Total number of relocs copied for the input section. */
1868 bfd_size_type count;
1869
1870 /* Number of pc-relative relocs copied for the input section. */
1871 bfd_size_type pc_count;
1872};
1873
1874/* Of those relocs that might be copied as dynamic relocs, this macro
1875 selects between relative and absolute types. */
1876
1877#define IS_ABSOLUTE_RELOC(RTYPE) \
805fc799
AM		 1878 ((RTYPE) != R_PPC64_REL32 \
1879 && (RTYPE) != R_PPC64_REL64 \
1880 && (RTYPE) != R_PPC64_ADDR30)
65f38f15 1881
721956f4
AM		 1882/* Section name for stubs is the associated section name plus this
1883 string. */
1884#define STUB_SUFFIX ".stub"
1885
1886/* Linker stubs.
1887 ppc_stub_long_branch:
1888 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
1889 destination, but a 24 bit branch in a stub section will reach.
1890 . b dest
1891
1892 ppc_stub_plt_branch:
1893 Similar to the above, but a 24 bit branch in the stub section won't
1894 reach its destination.
1895 . addis %r12,%r2,xxx@ha
1896 . ld %r11,xxx@l(%r12)
1897 . mtctr %r11
1898 . bctr
1899
1900 ppc_stub_plt_call:
1901 Used to call a function in a shared library.
1902 . addis %r12,%r2,xxx@ha
1903 . std %r2,40(%r1)
1904 . ld %r11,xxx+0@l(%r12)
1905 . ld %r2,xxx+8@l(%r12)
1906 . mtctr %r11
1907 . ld %r11,xxx+16@l(%r12)
1908 . bctr
1909*/
1910
1911enum ppc_stub_type {
1912 ppc_stub_none,
1913 ppc_stub_long_branch,
1914 ppc_stub_plt_branch,
1915 ppc_stub_plt_call
1916};
1917
1918struct ppc_stub_hash_entry {
1919
1920 /* Base hash table entry structure. */
1921 struct bfd_hash_entry root;
1922
1923 /* The stub section. */
1924 asection *stub_sec;
1925
1926 /* Offset within stub_sec of the beginning of this stub. */
1927 bfd_vma stub_offset;
1928
1929 /* Given the symbol's value and its section we can determine its final
1930 value when building the stubs (so the stub knows where to jump. */
1931 bfd_vma target_value;
1932 asection *target_section;
1933
1934 enum ppc_stub_type stub_type;
1935
1936 /* The symbol table entry, if any, that this was derived from. */
1937 struct ppc_link_hash_entry *h;
1938
1939 /* Where this stub is being called from, or, in the case of combined
1940 stub sections, the first input section in the group. */
1941 asection *id_sec;
1942};
1943
1944struct ppc_branch_hash_entry {
1945
1946 /* Base hash table entry structure. */
1947 struct bfd_hash_entry root;
1948
1949 /* Offset within .branch_lt. */
1950 unsigned int offset;
1951
1952 /* Generation marker. */
1953 unsigned int iter;
1954};
65f38f15
AM		 1955
1956struct ppc_link_hash_entry
1957{
1958 struct elf_link_hash_entry elf;
1959
721956f4
AM		 1960 /* A pointer to the most recently used stub hash entry against this
1961 symbol. */
1962 struct ppc_stub_hash_entry *stub_cache;
1963
65f38f15
AM		 1964 /* Track dynamic relocs copied for this symbol. */
1965 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 1966
721956f4
AM		 1967 /* Link between function code and descriptor symbols. */
1968 struct elf_link_hash_entry *oh;
1969
e86ce104
AM		 1970 /* Flag function code and descriptor symbols. */
1971 unsigned int is_func:1;
1972 unsigned int is_func_descriptor:1;
65f38f15
AM		 1973};
1974
1975/* ppc64 ELF linker hash table. */
1976
1977struct ppc_link_hash_table
1978{
1979 struct elf_link_hash_table elf;
1980
721956f4
AM		 1981 /* The stub hash table. */
1982 struct bfd_hash_table stub_hash_table;
1983
1984 /* Another hash table for plt_branch stubs. */
1985 struct bfd_hash_table branch_hash_table;
1986
1987 /* Linker stub bfd. */
1988 bfd *stub_bfd;
1989
1990 /* Linker call-backs. */
1991 asection * (*add_stub_section) PARAMS ((const char *, asection *));
1992 void (*layout_sections_again) PARAMS ((void));
1993
1994 /* Array to keep track of which stub sections have been created, and
1995 information on stub grouping. */
1996 struct map_stub {
1997 /* This is the section to which stubs in the group will be attached. */
1998 asection *link_sec;
1999 /* The stub section. */
2000 asection *stub_sec;
2001 } *stub_group;
2002
2003 /* Assorted information used by ppc64_elf_size_stubs. */
2004 unsigned int bfd_count;
2005 int top_index;
2006 asection **input_list;
2007 Elf_Internal_Sym **all_local_syms;
2008
65f38f15
AM		 2009 /* Short-cuts to get to dynamic linker sections. */
2010 asection *sgot;
2011 asection *srelgot;
2012 asection *splt;
2013 asection *srelplt;
2014 asection *sdynbss;
2015 asection *srelbss;
2016 asection *sglink;
82bd7b59 2017 asection *sfpr;
721956f4
AM		 2018 asection *sbrlt;
2019 asection *srelbrlt;
ec338859 2020
5d1634d7 2021 /* Set on error. */
721956f4
AM		 2022 unsigned int stub_error;
2023
2024 /* Flag set when small branches are detected. Used to
2025 select suitable defaults for the stub group size. */
2026 unsigned int has_14bit_branch;
2027
805fc799
AM		 2028 /* Set if we detect a reference undefined weak symbol. */
2029 unsigned int have_undefweak;
2030
721956f4
AM		 2031 /* Incremented every time we size stubs. */
2032 unsigned int stub_iteration;
5d1634d7 2033
ec338859
AM		 2034 /* Small local sym to section mapping cache. */
2035 struct sym_sec_cache sym_sec;
65f38f15
AM		 2036};
2037
721956f4
AM		 2038static struct bfd_hash_entry *stub_hash_newfunc
2039 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2040static struct bfd_hash_entry *branch_hash_newfunc
2041 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2042static struct bfd_hash_entry *link_hash_newfunc
2043 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2044static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
2045 PARAMS ((bfd *));
2046static void ppc64_elf_link_hash_table_free
2047 PARAMS ((struct bfd_link_hash_table *));
2048static char *ppc_stub_name
2049 PARAMS ((const asection *, const asection *,
2050 const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
2051static struct ppc_stub_hash_entry *ppc_get_stub_entry
2052 PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
2053 const Elf_Internal_Rela *, struct ppc_link_hash_table *));
2054static struct ppc_stub_hash_entry *ppc_add_stub
2055 PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
2056static boolean create_linkage_sections
2057 PARAMS ((bfd *, struct bfd_link_info *));
2058static boolean create_got_section
2059 PARAMS ((bfd *, struct bfd_link_info *));
2060static boolean ppc64_elf_create_dynamic_sections
2061 PARAMS ((bfd *, struct bfd_link_info *));
2062static void ppc64_elf_copy_indirect_symbol
2063 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
2064static boolean ppc64_elf_check_relocs
2065 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2066 const Elf_Internal_Rela *));
2067static asection * ppc64_elf_gc_mark_hook
2068 PARAMS ((bfd *abfd, struct bfd_link_info *info, Elf_Internal_Rela *rel,
2069 struct elf_link_hash_entry *h, Elf_Internal_Sym *sym));
2070static boolean ppc64_elf_gc_sweep_hook
2071 PARAMS ((bfd *abfd, struct bfd_link_info *info, asection *sec,
2072 const Elf_Internal_Rela *relocs));
2073static boolean func_desc_adjust
2074 PARAMS ((struct elf_link_hash_entry *, PTR));
2075static boolean ppc64_elf_func_desc_adjust
2076 PARAMS ((bfd *, struct bfd_link_info *));
2077static boolean ppc64_elf_adjust_dynamic_symbol
2078 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
2079static void ppc64_elf_hide_symbol
2080 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
2081static boolean allocate_dynrelocs
2082 PARAMS ((struct elf_link_hash_entry *, PTR));
2083static boolean readonly_dynrelocs
2084 PARAMS ((struct elf_link_hash_entry *, PTR));
2085static enum elf_reloc_type_class ppc64_elf_reloc_type_class
2086 PARAMS ((const Elf_Internal_Rela *));
2087static boolean ppc64_elf_size_dynamic_sections
2088 PARAMS ((bfd *, struct bfd_link_info *));
2089static INLINE enum ppc_stub_type ppc_type_of_stub
2090 PARAMS ((asection *, const Elf_Internal_Rela *,
2091 struct ppc_link_hash_entry **, bfd_vma));
2092static bfd_byte *build_plt_stub
2093 PARAMS ((bfd *, bfd_byte *, int, int));
2094static boolean ppc_build_one_stub
2095 PARAMS ((struct bfd_hash_entry *, PTR));
2096static boolean ppc_size_one_stub
2097 PARAMS ((struct bfd_hash_entry *, PTR));
2098static void group_sections
2099 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean));
2100static boolean get_local_syms
2101 PARAMS ((bfd *, struct ppc_link_hash_table *));
2102static boolean ppc64_elf_fake_sections
2103 PARAMS ((bfd *, Elf64_Internal_Shdr *, asection *));
2104static boolean ppc64_elf_relocate_section
2105 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
2106 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
2107 asection **));
2108static boolean ppc64_elf_finish_dynamic_symbol
2109 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2110 Elf_Internal_Sym *));
2111static boolean ppc64_elf_finish_dynamic_sections
2112 PARAMS ((bfd *, struct bfd_link_info *));
2113
65f38f15
AM		 2114/* Get the ppc64 ELF linker hash table from a link_info structure. */
2115
2116#define ppc_hash_table(p) \
2117 ((struct ppc_link_hash_table *) ((p)->hash))
2118
721956f4
AM		 2119#define ppc_stub_hash_lookup(table, string, create, copy) \
2120 ((struct ppc_stub_hash_entry *) \
2121 bfd_hash_lookup ((table), (string), (create), (copy)))
2122
2123#define ppc_branch_hash_lookup(table, string, create, copy) \
2124 ((struct ppc_branch_hash_entry *) \
2125 bfd_hash_lookup ((table), (string), (create), (copy)))
2126
2127/* Create an entry in the stub hash table. */
2128
2129static struct bfd_hash_entry *
2130stub_hash_newfunc (entry, table, string)
2131 struct bfd_hash_entry *entry;
2132 struct bfd_hash_table *table;
2133 const char *string;
2134{
2135 /* Allocate the structure if it has not already been allocated by a
2136 subclass. */
2137 if (entry == NULL)
2138 {
2139 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2140 if (entry == NULL)
2141 return entry;
2142 }
2143
2144 /* Call the allocation method of the superclass. */
2145 entry = bfd_hash_newfunc (entry, table, string);
2146 if (entry != NULL)
2147 {
2148 struct ppc_stub_hash_entry *eh;
2149
2150 /* Initialize the local fields. */
2151 eh = (struct ppc_stub_hash_entry *) entry;
2152 eh->stub_sec = NULL;
2153 eh->stub_offset = 0;
2154 eh->target_value = 0;
2155 eh->target_section = NULL;
2156 eh->stub_type = ppc_stub_none;
2157 eh->h = NULL;
2158 eh->id_sec = NULL;
2159 }
2160
2161 return entry;
2162}
2163
2164/* Create an entry in the branch hash table. */
2165
2166static struct bfd_hash_entry *
2167branch_hash_newfunc (entry, table, string)
2168 struct bfd_hash_entry *entry;
2169 struct bfd_hash_table *table;
2170 const char *string;
2171{
2172 /* Allocate the structure if it has not already been allocated by a
2173 subclass. */
2174 if (entry == NULL)
2175 {
2176 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2177 if (entry == NULL)
2178 return entry;
2179 }
2180
2181 /* Call the allocation method of the superclass. */
2182 entry = bfd_hash_newfunc (entry, table, string);
2183 if (entry != NULL)
2184 {
2185 struct ppc_branch_hash_entry *eh;
2186
2187 /* Initialize the local fields. */
2188 eh = (struct ppc_branch_hash_entry *) entry;
2189 eh->offset = 0;
2190 eh->iter = 0;
2191 }
2192
2193 return entry;
2194}
2195
65f38f15
AM		 2196/* Create an entry in a ppc64 ELF linker hash table. */
2197
2198static struct bfd_hash_entry *
2199link_hash_newfunc (entry, table, string)
2200 struct bfd_hash_entry *entry;
2201 struct bfd_hash_table *table;
2202 const char *string;
2203{
2204 /* Allocate the structure if it has not already been allocated by a
2205 subclass. */
2206 if (entry == NULL)
2207 {
2208 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2209 if (entry == NULL)
2210 return entry;
2211 }
2212
2213 /* Call the allocation method of the superclass. */
2214 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2215 if (entry != NULL)
2216 {
2217 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2218
721956f4 2219 eh->stub_cache = NULL;
65f38f15 2220 eh->dyn_relocs = NULL;
721956f4 2221 eh->oh = NULL;
e86ce104
AM		 2222 eh->is_func = 0;
2223 eh->is_func_descriptor = 0;
65f38f15
AM		 2224 }
2225
2226 return entry;
2227}
2228
2229/* Create a ppc64 ELF linker hash table. */
2230
2231static struct bfd_link_hash_table *
2232ppc64_elf_link_hash_table_create (abfd)
2233 bfd *abfd;
2234{
2235 struct ppc_link_hash_table *htab;
2236 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2237
e2d34d7d 2238 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
65f38f15
AM		 2239 if (htab == NULL)
2240 return NULL;
2241
2242 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2243 {
e2d34d7d 2244 free (htab);
65f38f15
AM		 2245 return NULL;
2246 }
2247
721956f4
AM		 2248 /* Init the stub hash table too. */
2249 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2250 return NULL;
2251
2252 /* And the branch hash table. */
2253 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2254 return NULL;
2255
2256 htab->stub_bfd = NULL;
2257 htab->add_stub_section = NULL;
2258 htab->layout_sections_again = NULL;
2259 htab->stub_group = NULL;
65f38f15
AM		 2260 htab->sgot = NULL;
2261 htab->srelgot = NULL;
2262 htab->splt = NULL;
2263 htab->srelplt = NULL;
2264 htab->sdynbss = NULL;
2265 htab->srelbss = NULL;
2266 htab->sglink = NULL;
82bd7b59 2267 htab->sfpr = NULL;
721956f4
AM		 2268 htab->sbrlt = NULL;
2269 htab->srelbrlt = NULL;
2270 htab->stub_error = 0;
2271 htab->has_14bit_branch = 0;
805fc799 2272 htab->have_undefweak = 0;
721956f4 2273 htab->stub_iteration = 0;
ec338859 2274 htab->sym_sec.abfd = NULL;
65f38f15
AM		 2275
2276 return &htab->elf.root;
2277}
2278
721956f4
AM		 2279/* Free the derived linker hash table. */
2280
2281static void
2282ppc64_elf_link_hash_table_free (hash)
2283 struct bfd_link_hash_table *hash;
2284{
2285 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
2286
2287 bfd_hash_table_free (&ret->stub_hash_table);
2288 bfd_hash_table_free (&ret->branch_hash_table);
2289 _bfd_generic_link_hash_table_free (hash);
2290}
2291
2292/* Build a name for an entry in the stub hash table. */
2293
2294static char *
2295ppc_stub_name (input_section, sym_sec, h, rel)
2296 const asection *input_section;
2297 const asection *sym_sec;
2298 const struct ppc_link_hash_entry *h;
2299 const Elf_Internal_Rela *rel;
2300{
2301 char *stub_name;
2302 bfd_size_type len;
2303
2304 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
2305 offsets from a sym as a branch target? In fact, we could
2306 probably assume the addend is always zero. */
2307 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
2308
2309 if (h)
2310 {
2311 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
2312 stub_name = bfd_malloc (len);
2313 if (stub_name != NULL)
2314 {
2315 sprintf (stub_name, "%08x_%s+%x",
2316 input_section->id & 0xffffffff,
2317 h->elf.root.root.string,
2318 (int) rel->r_addend & 0xffffffff);
2319 }
2320 }
2321 else
2322 {
2323 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2324 stub_name = bfd_malloc (len);
2325 if (stub_name != NULL)
2326 {
2327 sprintf (stub_name, "%08x_%x:%x+%x",
2328 input_section->id & 0xffffffff,
2329 sym_sec->id & 0xffffffff,
2330 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
2331 (int) rel->r_addend & 0xffffffff);
2332 }
2333 }
2334 return stub_name;
2335}
2336
2337/* Look up an entry in the stub hash. Stub entries are cached because
2338 creating the stub name takes a bit of time. */
2339
2340static struct ppc_stub_hash_entry *
2341ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
2342 const asection *input_section;
2343 const asection *sym_sec;
2344 struct elf_link_hash_entry *hash;
2345 const Elf_Internal_Rela *rel;
2346 struct ppc_link_hash_table *htab;
2347{
2348 struct ppc_stub_hash_entry *stub_entry;
2349 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
2350 const asection *id_sec;
2351
2352 /* If this input section is part of a group of sections sharing one
2353 stub section, then use the id of the first section in the group.
2354 Stub names need to include a section id, as there may well be
2355 more than one stub used to reach say, printf, and we need to
2356 distinguish between them. */
2357 id_sec = htab->stub_group[input_section->id].link_sec;
2358
2359 if (h != NULL && h->stub_cache != NULL
2360 && h->stub_cache->h == h
2361 && h->stub_cache->id_sec == id_sec)
2362 {
2363 stub_entry = h->stub_cache;
2364 }
2365 else
2366 {
2367 char *stub_name;
2368
2369 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
2370 if (stub_name == NULL)
2371 return NULL;
2372
2373 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
2374 stub_name, false, false);
2375 if (h != NULL)
2376 h->stub_cache = stub_entry;
2377
2378 free (stub_name);
2379 }
2380
2381 return stub_entry;
2382}
2383
2384/* Add a new stub entry to the stub hash. Not all fields of the new
2385 stub entry are initialised. */
2386
2387static struct ppc_stub_hash_entry *
2388ppc_add_stub (stub_name, section, htab)
2389 const char *stub_name;
2390 asection *section;
2391 struct ppc_link_hash_table *htab;
2392{
2393 asection *link_sec;
2394 asection *stub_sec;
2395 struct ppc_stub_hash_entry *stub_entry;
2396
2397 link_sec = htab->stub_group[section->id].link_sec;
2398 stub_sec = htab->stub_group[section->id].stub_sec;
2399 if (stub_sec == NULL)
2400 {
2401 stub_sec = htab->stub_group[link_sec->id].stub_sec;
2402 if (stub_sec == NULL)
2403 {
2404 bfd_size_type len;
2405 char *s_name;
2406
2407 len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
2408 s_name = bfd_alloc (htab->stub_bfd, len);
2409 if (s_name == NULL)
2410 return NULL;
2411
2412 strcpy (s_name, link_sec->name);
2413 strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
2414 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
2415 if (stub_sec == NULL)
2416 return NULL;
2417 htab->stub_group[link_sec->id].stub_sec = stub_sec;
2418 }
2419 htab->stub_group[section->id].stub_sec = stub_sec;
2420 }
2421
2422 /* Enter this entry into the linker stub hash table. */
2423 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2424 true, false);
2425 if (stub_entry == NULL)
2426 {
2427 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2428 bfd_archive_filename (section->owner),
2429 stub_name);
2430 return NULL;
2431 }
2432
2433 stub_entry->stub_sec = stub_sec;
2434 stub_entry->stub_offset = 0;
2435 stub_entry->id_sec = link_sec;
2436 return stub_entry;
2437}
2438
82bd7b59
AM		 2439/* Create sections for linker generated code. */
2440
2441static boolean
2442create_linkage_sections (dynobj, info)
2443 bfd *dynobj;
2444 struct bfd_link_info *info;
2445{
2446 struct ppc_link_hash_table *htab;
2447 flagword flags;
2448
2449 htab = ppc_hash_table (info);
2450
2451 /* Create .sfpr for code to save and restore fp regs. */
2452 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
2453 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 2454 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 2455 if (htab->sfpr == NULL
2456 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
2457 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
2458 return false;
2459
721956f4
AM		 2460 /* Create .glink for lazy dynamic linking support. */
2461 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
82bd7b59
AM		 2462 if (htab->sglink == NULL
2463 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
2464 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
2465 return false;
2466
721956f4
AM		 2467 /* Create .branch_lt for plt_branch stubs. */
2468 flags = (SEC_ALLOC | SEC_LOAD
2469 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2470 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
2471 if (htab->sbrlt == NULL
2472 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
2473 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
2474 return false;
2475
2476 if (info->shared)
2477 {
2478 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
2479 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2480 htab->srelbrlt = bfd_make_section (dynobj, ".rela.branch_lt");
2481 if (!htab->srelbrlt
2482 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
2483 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
2484 return false;
2485 }
82bd7b59
AM		 2486 return true;
2487}
2488
65f38f15
AM		 2489/* Create .got and .rela.got sections in DYNOBJ, and set up
2490 shortcuts to them in our hash table. */
2491
2492static boolean
2493create_got_section (dynobj, info)
2494 bfd *dynobj;
2495 struct bfd_link_info *info;
2496{
2497 struct ppc_link_hash_table *htab;
2498
2499 if (! _bfd_elf_create_got_section (dynobj, info))
2500 return false;
2501
2502 htab = ppc_hash_table (info);
2503 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2504 if (!htab->sgot)
2505 abort ();
2506
2507 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
2508 if (!htab->srelgot
2509 || ! bfd_set_section_flags (dynobj, htab->srelgot,
2510 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2511 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2512 | SEC_READONLY))
2513 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
2514 return false;
2515 return true;
2516}
5bd4f169 2517
82bd7b59 2518/* Create the dynamic sections, and set up shortcuts. */
5bd4f169
AM		 2519
2520static boolean
65f38f15
AM		 2521ppc64_elf_create_dynamic_sections (dynobj, info)
2522 bfd *dynobj;
5bd4f169
AM		 2523 struct bfd_link_info *info;
2524{
65f38f15 2525 struct ppc_link_hash_table *htab;
5bd4f169 2526
65f38f15
AM		 2527 htab = ppc_hash_table (info);
2528 if (!htab->sgot && !create_got_section (dynobj, info))
5bd4f169
AM		 2529 return false;
2530
65f38f15 2531 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
5bd4f169 2532 return false;
65f38f15
AM		 2533
2534 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2535 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2536 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2537 if (!info->shared)
2538 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2539
2540 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2541 || (!info->shared && !htab->srelbss))
2542 abort ();
2543
5bd4f169
AM		 2544 return true;
2545}
2546
65f38f15
AM		 2547/* Copy the extra info we tack onto an elf_link_hash_entry. */
2548
2549static void
2550ppc64_elf_copy_indirect_symbol (dir, ind)
2551 struct elf_link_hash_entry *dir, *ind;
2552{
2553 struct ppc_link_hash_entry *edir, *eind;
2554
2555 edir = (struct ppc_link_hash_entry *) dir;
2556 eind = (struct ppc_link_hash_entry *) ind;
2557
bbd7ec4a 2558 if (eind->dyn_relocs != NULL)
65f38f15 2559 {
bbd7ec4a
AM		 2560 if (edir->dyn_relocs != NULL)
2561 {
2562 struct ppc_dyn_relocs **pp;
2563 struct ppc_dyn_relocs *p;
2564
1e370bd2 2565 if (ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 2566 abort ();
2567
2568 /* Add reloc counts against the weak sym to the strong sym
2569 list. Merge any entries against the same section. */
2570 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2571 {
2572 struct ppc_dyn_relocs *q;
2573
2574 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2575 if (q->sec == p->sec)
2576 {
2577 q->pc_count += p->pc_count;
2578 q->count += p->count;
2579 *pp = p->next;
2580 break;
2581 }
2582 if (q == NULL)
2583 pp = &p->next;
2584 }
2585 *pp = edir->dyn_relocs;
2586 }
2587
65f38f15
AM		 2588 edir->dyn_relocs = eind->dyn_relocs;
2589 eind->dyn_relocs = NULL;
2590 }
65f38f15 2591
e86ce104
AM		 2592 edir->is_func |= eind->is_func;
2593 edir->is_func_descriptor |= eind->is_func_descriptor;
2594
65f38f15
AM		 2595 _bfd_elf_link_hash_copy_indirect (dir, ind);
2596}
2597
5bd4f169 2598/* Look through the relocs for a section during the first phase, and
65f38f15 2599 calculate needed space in the global offset table, procedure
5d1634d7 2600 linkage table, and dynamic reloc sections. */
5bd4f169
AM		 2601
2602static boolean
2603ppc64_elf_check_relocs (abfd, info, sec, relocs)
2604 bfd *abfd;
2605 struct bfd_link_info *info;
2606 asection *sec;
2607 const Elf_Internal_Rela *relocs;
2608{
65f38f15 2609 struct ppc_link_hash_table *htab;
5bd4f169
AM		 2610 Elf_Internal_Shdr *symtab_hdr;
2611 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2612 const Elf_Internal_Rela *rel;
2613 const Elf_Internal_Rela *rel_end;
5bd4f169 2614 asection *sreloc;
e86ce104 2615 boolean is_opd;
5bd4f169
AM		 2616
2617 if (info->relocateable)
2618 return true;
2619
65f38f15 2620 htab = ppc_hash_table (info);
5bd4f169 2621 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 2622
2623 sym_hashes = elf_sym_hashes (abfd);
2624 sym_hashes_end = (sym_hashes
2625 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym));
2626 if (!elf_bad_symtab (abfd))
2627 sym_hashes_end -= symtab_hdr->sh_info;
2628
2629 sreloc = NULL;
e86ce104 2630 is_opd = strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0;
5bd4f169 2631
82bd7b59
AM		 2632 if (htab->elf.dynobj == NULL)
2633 htab->elf.dynobj = abfd;
2634 if (htab->sfpr == NULL
2635 && !create_linkage_sections (htab->elf.dynobj, info))
2636 return false;
2637
5bd4f169
AM		 2638 rel_end = relocs + sec->reloc_count;
2639 for (rel = relocs; rel < rel_end; rel++)
2640 {
2641 unsigned long r_symndx;
2642 struct elf_link_hash_entry *h;
a33d1f77 2643 enum elf_ppc_reloc_type r_type;
5bd4f169
AM		 2644
2645 r_symndx = ELF64_R_SYM (rel->r_info);
2646 if (r_symndx < symtab_hdr->sh_info)
2647 h = NULL;
2648 else
2649 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2650
a33d1f77
AM		 2651 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2652 switch (r_type)
5bd4f169
AM		 2653 {
2654 /* GOT16 relocations */
2655 case R_PPC64_GOT16:
5bd4f169 2656 case R_PPC64_GOT16_DS:
65f38f15
AM		 2657 case R_PPC64_GOT16_HA:
2658 case R_PPC64_GOT16_HI:
2659 case R_PPC64_GOT16_LO:
5bd4f169 2660 case R_PPC64_GOT16_LO_DS:
5bd4f169 2661
65f38f15 2662 /* This symbol requires a global offset table entry. */
82bd7b59
AM		 2663 if (htab->sgot == NULL
2664 && !create_got_section (htab->elf.dynobj, info))
2665 return false;
5bd4f169
AM		 2666
2667 if (h != NULL)
2668 {
65f38f15 2669 h->got.refcount += 1;
5bd4f169
AM		 2670 }
2671 else
2672 {
65f38f15
AM		 2673 bfd_signed_vma *local_got_refcounts;
2674
5bd4f169 2675 /* This is a global offset table entry for a local symbol. */
65f38f15 2676 local_got_refcounts = elf_local_got_refcounts (abfd);
5bd4f169
AM		 2677 if (local_got_refcounts == NULL)
2678 {
dc810e39 2679 bfd_size_type size;
5bd4f169 2680
dc810e39
AM		 2681 size = symtab_hdr->sh_info;
2682 size *= sizeof (bfd_signed_vma);
2683 local_got_refcounts = ((bfd_signed_vma *)
65f38f15 2684 bfd_zalloc (abfd, size));
5bd4f169
AM		 2685 if (local_got_refcounts == NULL)
2686 return false;
2687 elf_local_got_refcounts (abfd) = local_got_refcounts;
5bd4f169 2688 }
65f38f15 2689 local_got_refcounts[r_symndx] += 1;
5bd4f169
AM		 2690 }
2691 break;
2692
5bd4f169 2693 case R_PPC64_PLT16_HA:
65f38f15
AM		 2694 case R_PPC64_PLT16_HI:
2695 case R_PPC64_PLT16_LO:
2696 case R_PPC64_PLT32:
2697 case R_PPC64_PLT64:
5bd4f169
AM		 2698 /* This symbol requires a procedure linkage table entry. We
2699 actually build the entry in adjust_dynamic_symbol,
2700 because this might be a case of linking PIC code without
2701 linking in any dynamic objects, in which case we don't
2702 need to generate a procedure linkage table after all. */
5bd4f169
AM		 2703 if (h == NULL)
2704 {
2705 /* It does not make sense to have a procedure linkage
2706 table entry for a local symbol. */
2707 bfd_set_error (bfd_error_bad_value);
2708 return false;
2709 }
2710
65f38f15
AM		 2711 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2712 h->plt.refcount += 1;
e86ce104 2713 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5bd4f169
AM		 2714 break;
2715
2716 /* The following relocations don't need to propagate the
2717 relocation if linking a shared object since they are
2718 section relative. */
2719 case R_PPC64_SECTOFF:
2720 case R_PPC64_SECTOFF_LO:
2721 case R_PPC64_SECTOFF_HI:
2722 case R_PPC64_SECTOFF_HA:
2723 case R_PPC64_SECTOFF_DS:
2724 case R_PPC64_SECTOFF_LO_DS:
2725 case R_PPC64_TOC16:
2726 case R_PPC64_TOC16_LO:
2727 case R_PPC64_TOC16_HI:
2728 case R_PPC64_TOC16_HA:
2729 case R_PPC64_TOC16_DS:
2730 case R_PPC64_TOC16_LO_DS:
2731 break;
2732
2733 /* This relocation describes the C++ object vtable hierarchy.
2734 Reconstruct it for later use during GC. */
2735 case R_PPC64_GNU_VTINHERIT:
2736 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2737 return false;
2738 break;
2739
2740 /* This relocation describes which C++ vtable entries are actually
2741 used. Record for later use during GC. */
2742 case R_PPC64_GNU_VTENTRY:
2743 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2744 return false;
2745 break;
2746
721956f4
AM		 2747 case R_PPC64_REL14:
2748 case R_PPC64_REL14_BRTAKEN:
2749 case R_PPC64_REL14_BRNTAKEN:
2750 htab->has_14bit_branch = 1;
2751 /* Fall through. */
2752
5d1634d7 2753 case R_PPC64_REL24:
e86ce104
AM		 2754 if (h != NULL
2755 && h->root.root.string[0] == '.'
2756 && h->root.root.string[1] != 0)
5d1634d7
AM		 2757 {
2758 /* We may need a .plt entry if the function this reloc
2759 refers to is in a shared lib. */
2760 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2761 h->plt.refcount += 1;
e86ce104 2762 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5d1634d7
AM		 2763 }
2764 break;
2765
e86ce104
AM		 2766 case R_PPC64_ADDR64:
2767 if (is_opd
2768 && h != NULL
2769 && h->root.root.string[0] == '.'
2770 && h->root.root.string[1] != 0)
2771 {
2772 struct elf_link_hash_entry *fdh;
2773
2774 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
2775 false, false, false);
2776 if (fdh != NULL)
2777 {
2778 /* Ensure the function descriptor symbol string is
2779 part of the code symbol string. We aren't
2780 changing the name here, just allowing some tricks
2781 in ppc64_elf_hide_symbol. */
2782 fdh->root.root.string = h->root.root.string + 1;
2783 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
721956f4 2784 ((struct ppc_link_hash_entry *) fdh)->oh = h;
e86ce104 2785 ((struct ppc_link_hash_entry *) h)->is_func = 1;
721956f4 2786 ((struct ppc_link_hash_entry *) h)->oh = fdh;
e86ce104
AM		 2787 }
2788 }
2789 /* Fall through. */
2790
5bd4f169
AM		 2791 case R_PPC64_REL64:
2792 case R_PPC64_REL32:
65f38f15
AM		 2793 case R_PPC64_ADDR14:
2794 case R_PPC64_ADDR14_BRNTAKEN:
2795 case R_PPC64_ADDR14_BRTAKEN:
2796 case R_PPC64_ADDR16:
2797 case R_PPC64_ADDR16_DS:
2798 case R_PPC64_ADDR16_HA:
2799 case R_PPC64_ADDR16_HI:
2800 case R_PPC64_ADDR16_HIGHER:
2801 case R_PPC64_ADDR16_HIGHERA:
2802 case R_PPC64_ADDR16_HIGHEST:
2803 case R_PPC64_ADDR16_HIGHESTA:
2804 case R_PPC64_ADDR16_LO:
2805 case R_PPC64_ADDR16_LO_DS:
2806 case R_PPC64_ADDR24:
2807 case R_PPC64_ADDR30:
2808 case R_PPC64_ADDR32:
65f38f15
AM		 2809 case R_PPC64_UADDR16:
2810 case R_PPC64_UADDR32:
2811 case R_PPC64_UADDR64:
5bd4f169 2812 case R_PPC64_TOC:
41bd81ab
AM		 2813 /* Don't propagate .opd relocs. */
2814 if (NO_OPD_RELOCS && is_opd)
e86ce104 2815 break;
e86ce104 2816
65f38f15
AM		 2817 /* If we are creating a shared library, and this is a reloc
2818 against a global symbol, or a non PC relative reloc
2819 against a local symbol, then we need to copy the reloc
2820 into the shared library. However, if we are linking with
2821 -Bsymbolic, we do not need to copy a reloc against a
2822 global symbol which is defined in an object we are
2823 including in the link (i.e., DEF_REGULAR is set). At
2824 this point we have not seen all the input files, so it is
2825 possible that DEF_REGULAR is not set now but will be set
2826 later (it is never cleared). In case of a weak definition,
2827 DEF_REGULAR may be cleared later by a strong definition in
2828 a shared library. We account for that possibility below by
2829 storing information in the relocs_copied field of the hash
2830 table entry. A similar situation occurs when creating
2831 shared libraries and symbol visibility changes render the
2832 symbol local.
2833
2834 If on the other hand, we are creating an executable, we
2835 may need to keep relocations for symbols satisfied by a
2836 dynamic library if we manage to avoid copy relocs for the
2837 symbol. */
2838 if ((info->shared
2839 && (sec->flags & SEC_ALLOC) != 0
a33d1f77 2840 && (IS_ABSOLUTE_RELOC (r_type)
65f38f15
AM		 2841 || (h != NULL
2842 && (! info->symbolic
2843 || h->root.type == bfd_link_hash_defweak
2844 || (h->elf_link_hash_flags
2845 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2846 || (!info->shared
2847 && (sec->flags & SEC_ALLOC) != 0
2848 && h != NULL
2849 && (h->root.type == bfd_link_hash_defweak
2850 || (h->elf_link_hash_flags
2851 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 2852 {
ec338859
AM		 2853 struct ppc_dyn_relocs *p;
2854 struct ppc_dyn_relocs **head;
2855
65f38f15
AM		 2856 /* We must copy these reloc types into the output file.
2857 Create a reloc section in dynobj and make room for
2858 this reloc. */
5bd4f169
AM		 2859 if (sreloc == NULL)
2860 {
2861 const char *name;
65f38f15 2862 bfd *dynobj;
5bd4f169
AM		 2863
2864 name = (bfd_elf_string_from_elf_section
2865 (abfd,
2866 elf_elfheader (abfd)->e_shstrndx,
2867 elf_section_data (sec)->rel_hdr.sh_name));
2868 if (name == NULL)
2869 return false;
2870
65f38f15
AM		 2871 if (strncmp (name, ".rela", 5) != 0
2872 || strcmp (bfd_get_section_name (abfd, sec),
2873 name + 5) != 0)
2874 {
2875 (*_bfd_error_handler)
2876 (_("%s: bad relocation section name `%s\'"),
2877 bfd_archive_filename (abfd), name);
5d1634d7 2878 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 2879 }
2880
65f38f15 2881 dynobj = htab->elf.dynobj;
5bd4f169
AM		 2882 sreloc = bfd_get_section_by_name (dynobj, name);
2883 if (sreloc == NULL)
2884 {
2885 flagword flags;
2886
2887 sreloc = bfd_make_section (dynobj, name);
2888 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2889 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2890 if ((sec->flags & SEC_ALLOC) != 0)
2891 flags |= SEC_ALLOC | SEC_LOAD;
2892 if (sreloc == NULL
2893 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 2894 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
5bd4f169
AM		 2895 return false;
2896 }
65f38f15 2897 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 2898 }
2899
65f38f15
AM		 2900 /* If this is a global symbol, we count the number of
2901 relocations we need for this symbol. */
2902 if (h != NULL)
2903 {
ec338859 2904 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 2905 }
2906 else
2907 {
ec338859
AM		 2908 /* Track dynamic relocs needed for local syms too.
2909 We really need local syms available to do this
2910 easily. Oh well. */
2911
2912 asection *s;
2913 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2914 sec, r_symndx);
2915 if (s == NULL)
2916 return false;
2917
2918 head = ((struct ppc_dyn_relocs **)
2919 &elf_section_data (s)->local_dynrel);
65f38f15 2920 }
ec338859
AM		 2921
2922 p = *head;
2923 if (p == NULL || p->sec != sec)
2924 {
2925 p = ((struct ppc_dyn_relocs *)
2926 bfd_alloc (htab->elf.dynobj,
2927 (bfd_size_type) sizeof *p));
2928 if (p == NULL)
2929 return false;
2930 p->next = *head;
2931 *head = p;
2932 p->sec = sec;
2933 p->count = 0;
2934 p->pc_count = 0;
2935 }
2936
2937 p->count += 1;
2938 if (!IS_ABSOLUTE_RELOC (r_type))
2939 p->pc_count += 1;
65f38f15 2940 }
5bd4f169 2941 break;
65f38f15
AM		 2942
2943 default:
96e0dda4 2944 break;
5bd4f169
AM		 2945 }
2946 }
2947
2948 return true;
2949}
2950
2951/* Return the section that should be marked against GC for a given
2952 relocation. */
2953
2954static asection *
2955ppc64_elf_gc_mark_hook (abfd, info, rel, h, sym)
2956 bfd *abfd;
2957 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2958 Elf_Internal_Rela *rel;
2959 struct elf_link_hash_entry *h;
2960 Elf_Internal_Sym *sym;
2961{
2962 if (h != NULL)
2963 {
a33d1f77
AM		 2964 enum elf_ppc_reloc_type r_type;
2965
2966 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2967 switch (r_type)
5bd4f169
AM		 2968 {
2969 case R_PPC64_GNU_VTINHERIT:
2970 case R_PPC64_GNU_VTENTRY:
2971 break;
2972
2973 default:
2974 switch (h->root.type)
2975 {
2976 case bfd_link_hash_defined:
2977 case bfd_link_hash_defweak:
2978 return h->root.u.def.section;
2979
2980 case bfd_link_hash_common:
2981 return h->root.u.c.p->section;
2982
2983 default:
2984 break;
2985 }
2986 }
2987 }
2988 else
2989 {
9ad5cbcf 2990 return bfd_section_from_elf_index (abfd, sym->st_shndx);
5bd4f169
AM		 2991 }
2992
2993 return NULL;
2994}
2995
65f38f15
AM		 2996/* Update the .got, .plt. and dynamic reloc reference counts for the
2997 section being removed. */
5bd4f169
AM		 2998
2999static boolean
3000ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
3001 bfd *abfd;
3002 struct bfd_link_info *info ATTRIBUTE_UNUSED;
3003 asection *sec;
3004 const Elf_Internal_Rela *relocs;
3005{
3006 Elf_Internal_Shdr *symtab_hdr;
3007 struct elf_link_hash_entry **sym_hashes;
3008 bfd_signed_vma *local_got_refcounts;
3009 const Elf_Internal_Rela *rel, *relend;
5bd4f169 3010
ec338859
AM		 3011 elf_section_data (sec)->local_dynrel = NULL;
3012
5bd4f169
AM		 3013 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3014 sym_hashes = elf_sym_hashes (abfd);
3015 local_got_refcounts = elf_local_got_refcounts (abfd);
3016
3017 relend = relocs + sec->reloc_count;
3018 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 3019 {
3020 unsigned long r_symndx;
3021 enum elf_ppc_reloc_type r_type;
3022 struct elf_link_hash_entry *h;
5bd4f169 3023
a33d1f77
AM		 3024 r_symndx = ELF64_R_SYM (rel->r_info);
3025 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3026 switch (r_type)
3027 {
3028 case R_PPC64_GOT16:
3029 case R_PPC64_GOT16_DS:
3030 case R_PPC64_GOT16_HA:
3031 case R_PPC64_GOT16_HI:
3032 case R_PPC64_GOT16_LO:
3033 case R_PPC64_GOT16_LO_DS:
3034 if (r_symndx >= symtab_hdr->sh_info)
3035 {
3036 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3037 if (h->got.refcount > 0)
3038 h->got.refcount--;
3039 }
3040 else
3041 {
3042 if (local_got_refcounts[r_symndx] > 0)
3043 local_got_refcounts[r_symndx]--;
3044 }
3045 break;
65f38f15 3046
a33d1f77
AM		 3047 case R_PPC64_PLT16_HA:
3048 case R_PPC64_PLT16_HI:
3049 case R_PPC64_PLT16_LO:
3050 case R_PPC64_PLT32:
3051 case R_PPC64_PLT64:
3052 if (r_symndx >= symtab_hdr->sh_info)
3053 {
3054 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3055 if (h->plt.refcount > 0)
3056 h->plt.refcount--;
3057 }
3058 break;
65f38f15 3059
721956f4
AM		 3060 case R_PPC64_REL14:
3061 case R_PPC64_REL14_BRNTAKEN:
3062 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 3063 case R_PPC64_REL24:
3064 if (r_symndx >= symtab_hdr->sh_info)
3065 {
3066 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3067 if (h->plt.refcount > 0)
3068 h->plt.refcount--;
3069 }
e86ce104 3070 break;
5d1634d7 3071
a33d1f77
AM		 3072 case R_PPC64_REL32:
3073 case R_PPC64_REL64:
3074 if (r_symndx >= symtab_hdr->sh_info)
3075 {
3076 struct ppc_link_hash_entry *eh;
3077 struct ppc_dyn_relocs **pp;
3078 struct ppc_dyn_relocs *p;
65f38f15 3079
a33d1f77
AM		 3080 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3081 eh = (struct ppc_link_hash_entry *) h;
65f38f15 3082
a33d1f77
AM		 3083 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3084 if (p->sec == sec)
3085 {
3086 p->pc_count -= 1;
3087 p->count -= 1;
3088 if (p->count == 0)
3089 *pp = p->next;
3090 break;
3091 }
3092 }
3093 break;
65f38f15 3094
a33d1f77
AM		 3095 case R_PPC64_ADDR14:
3096 case R_PPC64_ADDR14_BRNTAKEN:
3097 case R_PPC64_ADDR14_BRTAKEN:
3098 case R_PPC64_ADDR16:
3099 case R_PPC64_ADDR16_DS:
3100 case R_PPC64_ADDR16_HA:
3101 case R_PPC64_ADDR16_HI:
3102 case R_PPC64_ADDR16_HIGHER:
3103 case R_PPC64_ADDR16_HIGHERA:
3104 case R_PPC64_ADDR16_HIGHEST:
3105 case R_PPC64_ADDR16_HIGHESTA:
3106 case R_PPC64_ADDR16_LO:
3107 case R_PPC64_ADDR16_LO_DS:
3108 case R_PPC64_ADDR24:
3109 case R_PPC64_ADDR30:
3110 case R_PPC64_ADDR32:
3111 case R_PPC64_ADDR64:
3112 case R_PPC64_UADDR16:
3113 case R_PPC64_UADDR32:
3114 case R_PPC64_UADDR64:
3115 case R_PPC64_TOC:
3116 if (r_symndx >= symtab_hdr->sh_info)
3117 {
3118 struct ppc_link_hash_entry *eh;
3119 struct ppc_dyn_relocs **pp;
3120 struct ppc_dyn_relocs *p;
65f38f15 3121
a33d1f77
AM		 3122 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3123 eh = (struct ppc_link_hash_entry *) h;
3124
3125 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3126 if (p->sec == sec)
3127 {
3128 p->count -= 1;
3129 if (p->count == 0)
3130 *pp = p->next;
3131 break;
3132 }
3133 }
3134 break;
5bd4f169 3135
a33d1f77
AM		 3136 default:
3137 break;
3138 }
3139 }
5bd4f169
AM		 3140 return true;
3141}
3142
e86ce104
AM		 3143/* Called via elf_link_hash_traverse to transfer dynamic linking
3144 information on function code symbol entries to their corresponding
3145 function descriptor symbol entries. */
5bd4f169 3146static boolean
e86ce104 3147func_desc_adjust (h, inf)
5bd4f169 3148 struct elf_link_hash_entry *h;
e86ce104 3149 PTR inf;
5bd4f169 3150{
e86ce104 3151 struct bfd_link_info *info;
65f38f15 3152 struct ppc_link_hash_table *htab;
5bd4f169 3153
e92d460e 3154 if (h->root.type == bfd_link_hash_indirect)
e86ce104
AM		 3155 return true;
3156
e92d460e
AM		 3157 if (h->root.type == bfd_link_hash_warning)
3158 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3159
e86ce104 3160 info = (struct bfd_link_info *) inf;
65f38f15 3161 htab = ppc_hash_table (info);
5bd4f169 3162
e86ce104
AM		 3163 /* If this is a function code symbol, transfer dynamic linking
3164 information to the function descriptor symbol. */
3165 if (!((struct ppc_link_hash_entry *) h)->is_func)
3166 return true;
3167
805fc799
AM		 3168 if (h->root.type == bfd_link_hash_undefweak
3169 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
3170 htab->have_undefweak = true;
3171
e86ce104
AM		 3172 if (h->plt.refcount > 0
3173 && h->root.root.string[0] == '.'
3174 && h->root.root.string[1] != '\0')
5bd4f169 3175 {
721956f4 3176 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
e86ce104 3177 boolean force_local;
5bd4f169 3178
648cca2c
AM		 3179 /* Find the corresponding function descriptor symbol. Create it
3180 as undefined if necessary. */
5bd4f169 3181
721956f4
AM		 3182 if (fdh == NULL)
3183 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3184 false, false, true);
5bd4f169 3185
d926e03d
AM		 3186 if (fdh == NULL
3187 && info->shared
3188 && (h->root.type == bfd_link_hash_undefined
3189 || h->root.type == bfd_link_hash_undefweak))
648cca2c
AM		 3190 {
3191 bfd *abfd;
3192 asymbol *newsym;
3193
d926e03d 3194 abfd = h->root.u.undef.abfd;
648cca2c
AM		 3195 newsym = bfd_make_empty_symbol (abfd);
3196 newsym->name = h->root.root.string + 1;
3197 newsym->section = bfd_und_section_ptr;
3198 newsym->value = 0;
3199 newsym->flags = BSF_OBJECT;
3200 if (h->root.type == bfd_link_hash_undefweak)
3201 newsym->flags |= BSF_WEAK;
3202
3203 if ( !(_bfd_generic_link_add_one_symbol
3204 (info, abfd, newsym->name, newsym->flags,
3205 newsym->section, newsym->value, NULL, false, false,
3206 (struct bfd_link_hash_entry **) &fdh)))
3207 {
3208 return false;
3209 }
d926e03d 3210 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
648cca2c
AM		 3211 }
3212
e86ce104
AM		 3213 if (fdh != NULL
3214 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
3215 && (info->shared
3216 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3217 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
3218 {
3219 if (fdh->dynindx == -1)
3220 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
3221 return false;
e86ce104
AM		 3222 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
3223 & (ELF_LINK_HASH_REF_REGULAR
3224 | ELF_LINK_HASH_REF_DYNAMIC
3225 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
3226 | ELF_LINK_NON_GOT_REF));
e1fa50e7
AM		 3227 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3228 {
3229 fdh->plt.refcount = h->plt.refcount;
3230 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3231 }
e86ce104 3232 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
721956f4 3233 ((struct ppc_link_hash_entry *) fdh)->oh = h;
e86ce104 3234 fdh->root.root.string = h->root.root.string + 1;
721956f4 3235 ((struct ppc_link_hash_entry *) h)->oh = fdh;
e86ce104
AM		 3236 }
3237
3238 /* Now that the info is on the function descriptor, clear the
3239 function code sym info. Any function code syms for which we
3240 don't have a definition in a regular file, we force local.
3241 This prevents a shared library from exporting syms that have
3242 been imported from another library. Function code syms that
3243 are really in the library we must leave global to prevent the
e1fa50e7 3244 linker dragging in a definition from a static library. */
82bd7b59
AM		 3245 force_local = ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
3246 && info->shared);
e86ce104
AM		 3247 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3248 }
3249
3250 return true;
3251}
40b8271b 3252
82bd7b59
AM		 3253#define MIN_SAVE_FPR 14
3254#define MAX_SAVE_FPR 31
3255
e86ce104 3256/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 3257 this hook to a) provide some gcc support functions, and b) transfer
3258 dynamic linking information gathered so far on function code symbol
3259 entries, to their corresponding function descriptor symbol entries. */
e86ce104
AM		 3260static boolean
3261ppc64_elf_func_desc_adjust (obfd, info)
3262 bfd *obfd ATTRIBUTE_UNUSED;
3263 struct bfd_link_info *info;
3264{
3265 struct ppc_link_hash_table *htab;
82bd7b59
AM		 3266 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
3267 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
3268 unsigned int i;
3269 struct elf_link_hash_entry *h;
721956f4 3270 bfd_byte *p;
82bd7b59 3271 char sym[10];
e86ce104
AM		 3272
3273 htab = ppc_hash_table (info);
82bd7b59
AM		 3274
3275 if (htab->sfpr == NULL)
3276 /* We don't have any relocs. */
3277 return true;
3278
3279 /* First provide any missing ._savef* and ._restf* functions. */
3280 memcpy (sym, "._savef14", 10);
3281 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3282 {
3283 sym[7] = i / 10 + '0';
3284 sym[8] = i % 10 + '0';
3285 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3286 if (h != NULL
3287 && h->root.type == bfd_link_hash_undefined)
3288 {
3289 if (lowest_savef > i)
3290 lowest_savef = i;
3291 h->root.type = bfd_link_hash_defined;
3292 h->root.u.def.section = htab->sfpr;
3293 h->root.u.def.value = (i - lowest_savef) * 4;
3294 h->type = STT_FUNC;
3295 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3296 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3297 }
3298 }
3299
3300 memcpy (sym, "._restf14", 10);
3301 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3302 {
3303 sym[7] = i / 10 + '0';
3304 sym[8] = i % 10 + '0';
3305 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3306 if (h != NULL
3307 && h->root.type == bfd_link_hash_undefined)
3308 {
3309 if (lowest_restf > i)
3310 lowest_restf = i;
3311 h->root.type = bfd_link_hash_defined;
3312 h->root.u.def.section = htab->sfpr;
3313 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3314 + (i - lowest_restf) * 4);
3315 h->type = STT_FUNC;
3316 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3317 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3318 }
3319 }
3320
805fc799
AM		 3321 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
3322
82bd7b59
AM		 3323 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3324 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
3325
3326 if (htab->sfpr->_raw_size == 0)
805fc799
AM		 3327 {
3328 if (!htab->have_undefweak)
3329 {
3330 _bfd_strip_section_from_output (info, htab->sfpr);
3331 return true;
3332 }
3333
3334 htab->sfpr->_raw_size = 4;
3335 }
82bd7b59 3336
721956f4
AM		 3337 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
3338 if (p == NULL)
3339 return false;
3340 htab->sfpr->contents = p;
3341
3342 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
3343 {
3344 unsigned int fpr = i << 21;
3345 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3346 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
3347 p += 4;
3348 }
3349 if (lowest_savef <= MAX_SAVE_FPR)
3350 {
82bd7b59
AM		 3351 bfd_put_32 (htab->elf.dynobj, BLR, p);
3352 p += 4;
721956f4 3353 }
82bd7b59 3354
721956f4
AM		 3355 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
3356 {
3357 unsigned int fpr = i << 21;
3358 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3359 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
82bd7b59
AM		 3360 p += 4;
3361 }
721956f4
AM		 3362 if (lowest_restf <= MAX_SAVE_FPR
3363 || htab->sfpr->_raw_size == 4)
3364 {
3365 bfd_put_32 (htab->elf.dynobj, BLR, p);
3366 }
82bd7b59 3367
e86ce104
AM		 3368 return true;
3369}
3370
3371/* Adjust a symbol defined by a dynamic object and referenced by a
3372 regular object. The current definition is in some section of the
3373 dynamic object, but we're not including those sections. We have to
3374 change the definition to something the rest of the link can
3375 understand. */
3376
3377static boolean
3378ppc64_elf_adjust_dynamic_symbol (info, h)
3379 struct bfd_link_info *info;
3380 struct elf_link_hash_entry *h;
3381{
3382 struct ppc_link_hash_table *htab;
3383 struct ppc_link_hash_entry * eh;
3384 struct ppc_dyn_relocs *p;
3385 asection *s;
3386 unsigned int power_of_two;
3387
3388 htab = ppc_hash_table (info);
3389
3390 /* Deal with function syms. */
3391 if (h->type == STT_FUNC
3392 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
3393 {
3394 /* Clear procedure linkage table information for any symbol that
3395 won't need a .plt entry. */
3396 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
3397 || h->plt.refcount <= 0
3398 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3399 || (! info->shared
3400 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
3401 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
40b8271b 3402 {
40b8271b
AM		 3403 h->plt.offset = (bfd_vma) -1;
3404 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
40b8271b 3405 }
5bd4f169
AM		 3406 return true;
3407 }
bbd7ec4a
AM		 3408 else
3409 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 3410
3411 /* If this is a weak symbol, and there is a real definition, the
3412 processor independent code will have arranged for us to see the
3413 real definition first, and we can just use the same value. */
3414 if (h->weakdef != NULL)
3415 {
3416 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3417 || h->weakdef->root.type == bfd_link_hash_defweak);
3418 h->root.u.def.section = h->weakdef->root.u.def.section;
3419 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 3420 return true;
5bd4f169
AM		 3421 }
3422
3423 /* This is a reference to a symbol defined by a dynamic object which
3424 is not a function. */
3425
3426 /* If we are creating a shared library, we must presume that the
3427 only references to the symbol are via the global offset table.
3428 For such cases we need not do anything here; the relocations will
3429 be handled correctly by relocate_section. */
3430 if (info->shared)
3431 return true;
3432
65f38f15
AM		 3433 /* If there are no references to this symbol that do not use the
3434 GOT, we don't need to generate a copy reloc. */
3435 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
3436 return true;
3437
3438 eh = (struct ppc_link_hash_entry *) h;
3439 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3440 {
3441 s = p->sec->output_section;
3442 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3443 break;
3444 }
3445
3446 /* If we didn't find any dynamic relocs in read-only sections, then
5d1634d7 3447 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
65f38f15
AM		 3448 if (p == NULL)
3449 {
3450 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
3451 return true;
3452 }
3453
5bd4f169
AM		 3454 /* We must allocate the symbol in our .dynbss section, which will
3455 become part of the .bss section of the executable. There will be
3456 an entry for this symbol in the .dynsym section. The dynamic
3457 object will contain position independent code, so all references
3458 from the dynamic object to this symbol will go through the global
3459 offset table. The dynamic linker will use the .dynsym entry to
3460 determine the address it must put in the global offset table, so
3461 both the dynamic object and the regular object will refer to the
3462 same memory location for the variable. */
5bd4f169
AM		 3463
3464 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3465 copy the initial value out of the dynamic object and into the
3466 runtime process image. We need to remember the offset into the
3467 .rela.bss section we are going to use. */
3468 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3469 {
65f38f15 3470 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 3471 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
3472 }
3473
3474 /* We need to figure out the alignment required for this symbol. I
3475 have no idea how ELF linkers handle this. */
3476 power_of_two = bfd_log2 (h->size);
3477 if (power_of_two > 4)
3478 power_of_two = 4;
3479
3480 /* Apply the required alignment. */
65f38f15
AM		 3481 s = htab->sdynbss;
3482 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
3483 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 3484 {
65f38f15 3485 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 3486 return false;
3487 }
3488
3489 /* Define the symbol as being at this point in the section. */
3490 h->root.u.def.section = s;
3491 h->root.u.def.value = s->_raw_size;
3492
3493 /* Increment the section size to make room for the symbol. */
3494 s->_raw_size += h->size;
3495
3496 return true;
3497}
3498
e86ce104
AM		 3499/* If given a function descriptor symbol, hide both the function code
3500 sym and the descriptor. */
3501static void
3502ppc64_elf_hide_symbol (info, h, force_local)
3503 struct bfd_link_info *info;
3504 struct elf_link_hash_entry *h;
3505 boolean force_local;
3506{
3507 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3508
3509 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
3510 {
3511 const char *name;
721956f4 3512 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
e86ce104
AM		 3513 struct ppc_link_hash_table *htab;
3514
3515 name = h->root.root.string - 1;
3516 htab = ppc_hash_table (info);
721956f4
AM		 3517 if (fh == NULL)
3518 fh = elf_link_hash_lookup (&htab->elf, name, false, false, false);
e86ce104
AM		 3519 if (fh != NULL)
3520 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
3521 }
3522}
3523
65f38f15
AM		 3524/* This is the condition under which ppc64_elf_finish_dynamic_symbol
3525 will be called from elflink.h. If elflink.h doesn't call our
3526 finish_dynamic_symbol routine, we'll need to do something about
3527 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
3528#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
3529 ((DYN) \
3530 && ((INFO)->shared \
3531 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
3532 && ((H)->dynindx != -1 \
3533 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 3534
65f38f15
AM		 3535/* Allocate space in .plt, .got and associated reloc sections for
3536 dynamic relocs. */
5bd4f169
AM		 3537
3538static boolean
65f38f15
AM		 3539allocate_dynrelocs (h, inf)
3540 struct elf_link_hash_entry *h;
3541 PTR inf;
5bd4f169 3542{
65f38f15
AM		 3543 struct bfd_link_info *info;
3544 struct ppc_link_hash_table *htab;
5bd4f169 3545 asection *s;
65f38f15
AM		 3546 struct ppc_link_hash_entry *eh;
3547 struct ppc_dyn_relocs *p;
5bd4f169 3548
e92d460e 3549 if (h->root.type == bfd_link_hash_indirect)
65f38f15 3550 return true;
5bd4f169 3551
e92d460e
AM		 3552 if (h->root.type == bfd_link_hash_warning)
3553 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3554
65f38f15
AM		 3555 info = (struct bfd_link_info *) inf;
3556 htab = ppc_hash_table (info);
5bd4f169 3557
65f38f15 3558 if (htab->elf.dynamic_sections_created
e86ce104
AM		 3559 && h->plt.refcount > 0
3560 && h->dynindx != -1)
5bd4f169 3561 {
e86ce104 3562 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5bd4f169 3563
65f38f15
AM		 3564 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
3565 {
65f38f15
AM		 3566 /* If this is the first .plt entry, make room for the special
3567 first entry. */
3568 s = htab->splt;
5bd4f169 3569 if (s->_raw_size == 0)
65f38f15
AM		 3570 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
3571
3572 h->plt.offset = s->_raw_size;
3573
3574 /* Make room for this entry. */
3575 s->_raw_size += PLT_ENTRY_SIZE;
3576
721956f4 3577 /* Make room for the .glink code. */
5d1634d7
AM		 3578 s = htab->sglink;
3579 if (s->_raw_size == 0)
3580 s->_raw_size += GLINK_CALL_STUB_SIZE;
3581 /* We need bigger stubs past index 32767. */
3582 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
3583 s->_raw_size += 4;
3584 s->_raw_size += 2*4;
65f38f15
AM		 3585
3586 /* We also need to make an entry in the .rela.plt section. */
3587 s = htab->srelplt;
3588 s->_raw_size += sizeof (Elf64_External_Rela);
3589 }
3590 else
3591 {
3592 h->plt.offset = (bfd_vma) -1;
3593 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3594 }
3595 }
3596 else
3597 {
3598 h->plt.offset = (bfd_vma) -1;
3599 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3600 }
3601
3602 if (h->got.refcount > 0)
3603 {
3604 boolean dyn;
3605
3606 /* Make sure this symbol is output as a dynamic symbol.
3607 Undefined weak syms won't yet be marked as dynamic. */
3608 if (h->dynindx == -1
3609 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3610 {
3611 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
3612 return false;
3613 }
3614
3615 s = htab->sgot;
3616 h->got.offset = s->_raw_size;
3617 s->_raw_size += 8;
3618 dyn = htab->elf.dynamic_sections_created;
3619 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
3620 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
3621 }
3622 else
3623 h->got.offset = (bfd_vma) -1;
3624
3625 eh = (struct ppc_link_hash_entry *) h;
3626 if (eh->dyn_relocs == NULL)
3627 return true;
3628
3629 /* In the shared -Bsymbolic case, discard space allocated for
3630 dynamic pc-relative relocs against symbols which turn out to be
3631 defined in regular objects. For the normal shared case, discard
3632 space for relocs that have become local due to symbol visibility
3633 changes. */
3634
3635 if (info->shared)
3636 {
3637 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
3638 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3639 || info->symbolic))
3640 {
3641 struct ppc_dyn_relocs **pp;
3642
3643 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 3644 {
65f38f15
AM		 3645 p->count -= p->pc_count;
3646 p->pc_count = 0;
3647 if (p->count == 0)
3648 *pp = p->next;
3649 else
3650 pp = &p->next;
5bd4f169 3651 }
65f38f15
AM		 3652 }
3653 }
3654 else
3655 {
3656 /* For the non-shared case, discard space for relocs against
3657 symbols which turn out to need copy relocs or are not
3658 dynamic. */
3659
3660 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3661 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3662 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3663 || (htab->elf.dynamic_sections_created
3664 && (h->root.type == bfd_link_hash_undefweak
3665 || h->root.type == bfd_link_hash_undefined))))
3666 {
3667 /* Make sure this symbol is output as a dynamic symbol.
3668 Undefined weak syms won't yet be marked as dynamic. */
3669 if (h->dynindx == -1
3670 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3671 {
ec338859 3672 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
65f38f15
AM		 3673 return false;
3674 }
3675
3676 /* If that succeeded, we know we'll be keeping all the
3677 relocs. */
3678 if (h->dynindx != -1)
3679 goto keep;
3680 }
3681
3682 eh->dyn_relocs = NULL;
3683
ec338859 3684 keep: ;
65f38f15
AM		 3685 }
3686
3687 /* Finally, allocate space. */
3688 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3689 {
3690 asection *sreloc = elf_section_data (p->sec)->sreloc;
3691 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
3692 }
3693
3694 return true;
3695}
3696
3697/* Find any dynamic relocs that apply to read-only sections. */
3698
3699static boolean
3700readonly_dynrelocs (h, inf)
3701 struct elf_link_hash_entry *h;
3702 PTR inf;
3703{
3704 struct ppc_link_hash_entry *eh;
3705 struct ppc_dyn_relocs *p;
3706
e92d460e
AM		 3707 if (h->root.type == bfd_link_hash_warning)
3708 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3709
65f38f15
AM		 3710 eh = (struct ppc_link_hash_entry *) h;
3711 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3712 {
3713 asection *s = p->sec->output_section;
3714
3715 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3716 {
3717 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3718
3719 info->flags |= DF_TEXTREL;
3720
3721 /* Not an error, just cut short the traversal. */
3722 return false;
3723 }
3724 }
3725 return true;
3726}
3727
3728/* Set the sizes of the dynamic sections. */
3729
3730static boolean
3731ppc64_elf_size_dynamic_sections (output_bfd, info)
3732 bfd *output_bfd ATTRIBUTE_UNUSED;
3733 struct bfd_link_info *info;
3734{
3735 struct ppc_link_hash_table *htab;
3736 bfd *dynobj;
3737 asection *s;
3738 boolean relocs;
3739 bfd *ibfd;
3740
3741 htab = ppc_hash_table (info);
3742 dynobj = htab->elf.dynobj;
3743 if (dynobj == NULL)
3744 abort ();
3745
3746 if (htab->elf.dynamic_sections_created)
3747 {
3748 /* Set the contents of the .interp section to the interpreter. */
3749 if (! info->shared)
3750 {
3751 s = bfd_get_section_by_name (dynobj, ".interp");
3752 if (s == NULL)
3753 abort ();
3754 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
3755 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3756 }
3757 }
3758
3759 /* Set up .got offsets for local syms, and space for local dynamic
3760 relocs. */
3761 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3762 {
3763 bfd_signed_vma *local_got;
3764 bfd_signed_vma *end_local_got;
3765 bfd_size_type locsymcount;
3766 Elf_Internal_Shdr *symtab_hdr;
3767 asection *srel;
3768
3769 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
3770 continue;
3771
3772 for (s = ibfd->sections; s != NULL; s = s->next)
3773 {
ec338859 3774 struct ppc_dyn_relocs *p;
65f38f15 3775
ec338859
AM		 3776 for (p = *((struct ppc_dyn_relocs **)
3777 &elf_section_data (s)->local_dynrel);
3778 p != NULL;
3779 p = p->next)
65f38f15 3780 {
ec338859
AM		 3781 if (!bfd_is_abs_section (p->sec)
3782 && bfd_is_abs_section (p->sec->output_section))
3783 {
3784 /* Input section has been discarded, either because
3785 it is a copy of a linkonce section or due to
3786 linker script /DISCARD/, so we'll be discarding
3787 the relocs too. */
3788 }
248866a8 3789 else if (p->count != 0)
ec338859
AM		 3790 {
3791 srel = elf_section_data (p->sec)->sreloc;
3792 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 3793 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3794 info->flags |= DF_TEXTREL;
ec338859 3795 }
65f38f15
AM		 3796 }
3797 }
3798
3799 local_got = elf_local_got_refcounts (ibfd);
3800 if (!local_got)
3801 continue;
3802
3803 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3804 locsymcount = symtab_hdr->sh_info;
3805 end_local_got = local_got + locsymcount;
3806 s = htab->sgot;
3807 srel = htab->srelgot;
3808 for (; local_got < end_local_got; ++local_got)
3809 {
3810 if (*local_got > 0)
5bd4f169 3811 {
65f38f15
AM		 3812 *local_got = s->_raw_size;
3813 s->_raw_size += 8;
3814 if (info->shared)
3815 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 3816 }
65f38f15
AM		 3817 else
3818 *local_got = (bfd_vma) -1;
3819 }
3820 }
3821
3822 /* Allocate global sym .plt and .got entries, and space for global
3823 sym dynamic relocs. */
3824 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
3825
3826 /* We now have determined the sizes of the various dynamic sections.
3827 Allocate memory for them. */
3828 relocs = false;
3829 for (s = dynobj->sections; s != NULL; s = s->next)
3830 {
3831 if ((s->flags & SEC_LINKER_CREATED) == 0)
3832 continue;
3833
721956f4
AM		 3834 if (s == htab->sbrlt || s == htab->srelbrlt)
3835 /* These haven't been allocated yet; don't strip. */
3836 continue;
3837 else if (s == htab->splt
3838 || s == htab->sgot
3839 || s == htab->sglink)
65f38f15
AM		 3840 {
3841 /* Strip this section if we don't need it; see the
3842 comment below. */
5bd4f169 3843 }
65f38f15 3844 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 3845 {
3846 if (s->_raw_size == 0)
3847 {
3848 /* If we don't need this section, strip it from the
3849 output file. This is mostly to handle .rela.bss and
3850 .rela.plt. We must create both sections in
3851 create_dynamic_sections, because they must be created
3852 before the linker maps input sections to output
3853 sections. The linker does that before
3854 adjust_dynamic_symbol is called, and it is that
3855 function which decides whether anything needs to go
3856 into these sections. */
5bd4f169
AM		 3857 }
3858 else
3859 {
65f38f15
AM		 3860 if (s != htab->srelplt)
3861 relocs = true;
5bd4f169
AM		 3862
3863 /* We use the reloc_count field as a counter if we need
3864 to copy relocs into the output file. */
3865 s->reloc_count = 0;
3866 }
3867 }
65f38f15 3868 else
5bd4f169
AM		 3869 {
3870 /* It's not one of our sections, so don't allocate space. */
3871 continue;
3872 }
3873
65f38f15 3874 if (s->_raw_size == 0)
5bd4f169
AM		 3875 {
3876 _bfd_strip_section_from_output (info, s);
3877 continue;
3878 }
3879
65f38f15
AM		 3880 /* Allocate memory for the section contents. We use bfd_zalloc
3881 here in case unused entries are not reclaimed before the
3882 section's contents are written out. This should not happen,
3883 but this way if it does, we get a R_PPC64_NONE reloc instead
3884 of garbage. */
721956f4 3885 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
65f38f15 3886 if (s->contents == NULL)
5bd4f169
AM		 3887 return false;
3888 }
3889
e86ce104 3890 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 3891 {
3892 /* Add some entries to the .dynamic section. We fill in the
3893 values later, in ppc64_elf_finish_dynamic_sections, but we
3894 must add the entries now so that we get the correct size for
3895 the .dynamic section. The DT_DEBUG entry is filled in by the
3896 dynamic linker and used by the debugger. */
dc810e39
AM		 3897#define add_dynamic_entry(TAG, VAL) \
3898 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
3899
3900 if (!info->shared)
5bd4f169 3901 {
dc810e39 3902 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 3903 return false;
3904 }
3905
65f38f15 3906 if (htab->splt->_raw_size != 0)
5bd4f169 3907 {
dc810e39
AM		 3908 if (!add_dynamic_entry (DT_PLTGOT, 0)
3909 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3910 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 3911 || !add_dynamic_entry (DT_JMPREL, 0)
3912 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5bd4f169
AM		 3913 return false;
3914 }
3915
19397422
AM		 3916 if (NO_OPD_RELOCS)
3917 {
3918 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
3919 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
3920 return false;
3921 }
3922
5bd4f169
AM		 3923 if (relocs)
3924 {
dc810e39
AM		 3925 if (!add_dynamic_entry (DT_RELA, 0)
3926 || !add_dynamic_entry (DT_RELASZ, 0)
3927 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 3928 return false;
5bd4f169 3929
65f38f15
AM		 3930 /* If any dynamic relocs apply to a read-only section,
3931 then we need a DT_TEXTREL entry. */
248866a8
AM		 3932 if ((info->flags & DF_TEXTREL) == 0)
3933 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
3934 (PTR) info);
5bd4f169 3935
65f38f15 3936 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 3937 {
65f38f15
AM		 3938 if (!add_dynamic_entry (DT_TEXTREL, 0))
3939 return false;
5bd4f169 3940 }
5bd4f169 3941 }
5bd4f169 3942 }
65f38f15 3943#undef add_dynamic_entry
5bd4f169
AM		 3944
3945 return true;
3946}
3947
721956f4 3948/* Determine the type of stub needed, if any, for a call. */
5bd4f169 3949
721956f4
AM		 3950static INLINE enum ppc_stub_type
3951ppc_type_of_stub (input_sec, rel, hash, destination)
3952 asection *input_sec;
3953 const Elf_Internal_Rela *rel;
3954 struct ppc_link_hash_entry **hash;
3955 bfd_vma destination;
5bd4f169 3956{
721956f4
AM		 3957 struct ppc_link_hash_entry *h = *hash;
3958 bfd_vma location;
3959 bfd_vma branch_offset;
3960 bfd_vma max_branch_offset;
3961 unsigned int r_type;
5bd4f169 3962
721956f4
AM		 3963 if (h != NULL)
3964 {
3965 if (h->oh != NULL
3966 && h->oh->plt.offset != (bfd_vma) -1
3967 && h->oh->dynindx != -1)
5bd4f169 3968 {
721956f4
AM		 3969 *hash = (struct ppc_link_hash_entry *) h->oh;
3970 return ppc_stub_plt_call;
5bd4f169
AM		 3971 }
3972
721956f4
AM		 3973 if (h->elf.root.type == bfd_link_hash_undefweak
3974 || h->elf.root.type == bfd_link_hash_undefined)
3975 return ppc_stub_none;
5d1634d7 3976 }
5d1634d7 3977
721956f4
AM		 3978 /* Determine where the call point is. */
3979 location = (input_sec->output_offset
3980 + input_sec->output_section->vma
3981 + rel->r_offset);
5d1634d7 3982
721956f4
AM		 3983 branch_offset = destination - location;
3984 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 3985
721956f4
AM		 3986 /* Determine if a long branch stub is needed. */
3987 max_branch_offset = 1 << 25;
3988 if (r_type != (unsigned int) R_PPC64_REL24)
3989 max_branch_offset = 1 << 15;
5d1634d7 3990
721956f4
AM		 3991 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
3992 /* We need a stub. Figure out whether a long_branch or plt_branch
3993 is needed later. */
3994 return ppc_stub_long_branch;
5d1634d7 3995
721956f4 3996 return ppc_stub_none;
5d1634d7
AM		 3997}
3998
3999/* Build a .plt call stub. */
4000
4001static bfd_byte *
4002build_plt_stub (obfd, p, offset, glink)
4003 bfd *obfd;
4004 bfd_byte *p;
4005 int offset;
4006 int glink;
4007{
4008#define PPC_LO(v) ((v) & 0xffff)
4009#define PPC_HI(v) (((v) >> 16) & 0xffff)
4010#define PPC_HA(v) PPC_HI ((v) + 0x8000)
4011
4012 if (glink)
4013 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
4014 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
4015 if (!glink)
4016 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
4017 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4018 if (PPC_HA (offset + 8) != PPC_HA (offset))
4019 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4020 offset += 8;
4021 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
4022 if (PPC_HA (offset + 8) != PPC_HA (offset))
4023 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4024 offset += 8;
4025 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
4026 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4027 bfd_put_32 (obfd, BCTR, p), p += 4;
4028 return p;
4029}
4030
5d1634d7 4031static boolean
721956f4
AM		 4032ppc_build_one_stub (gen_entry, in_arg)
4033 struct bfd_hash_entry *gen_entry;
4034 PTR in_arg;
5d1634d7 4035{
721956f4
AM		 4036 struct ppc_stub_hash_entry *stub_entry;
4037 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 4038 struct bfd_link_info *info;
4039 struct ppc_link_hash_table *htab;
721956f4
AM		 4040 asection *stub_sec;
4041 bfd *stub_bfd;
4042 bfd_byte *loc;
4043 bfd_byte *p;
4044 unsigned int indx;
4045 bfd_vma off;
4046 int size;
5d1634d7 4047
721956f4
AM		 4048 /* Massage our args to the form they really have. */
4049 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4050 info = (struct bfd_link_info *) in_arg;
5d1634d7 4051
5d1634d7 4052 htab = ppc_hash_table (info);
721956f4 4053 stub_sec = stub_entry->stub_sec;
5d1634d7 4054
721956f4
AM		 4055 /* Make a note of the offset within the stubs for this entry. */
4056 stub_entry->stub_offset = stub_sec->_cooked_size;
4057 loc = stub_sec->contents + stub_entry->stub_offset;
4058
4059 stub_bfd = stub_sec->owner;
4060
4061 switch (stub_entry->stub_type)
5d1634d7 4062 {
721956f4
AM		 4063 case ppc_stub_long_branch:
4064 /* Branches are relative. This is where we are going to. */
4065 off = (stub_entry->target_value
4066 + stub_entry->target_section->output_offset
4067 + stub_entry->target_section->output_section->vma);
5d1634d7 4068
721956f4
AM		 4069 /* And this is where we are coming from. */
4070 off -= (stub_entry->stub_offset
4071 + stub_sec->output_offset
4072 + stub_sec->output_section->vma);
e86ce104 4073
721956f4 4074 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
e86ce104 4075
721956f4
AM		 4076 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
4077 size = 4;
4078 break;
e86ce104 4079
721956f4
AM		 4080 case ppc_stub_plt_branch:
4081 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4082 stub_entry->root.string + 9,
4083 false, false);
4084 if (br_entry == NULL)
4085 {
4086 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
4087 stub_entry->root.string + 9);
4088 htab->stub_error = true;
4089 return false;
4090 }
4091
4092 off = (stub_entry->target_value
4093 + stub_entry->target_section->output_offset
4094 + stub_entry->target_section->output_section->vma);
4095
4096 bfd_put_64 (htab->sbrlt->owner, off,
4097 htab->sbrlt->contents + br_entry->offset);
4098
4099 if (info->shared)
4100 {
4101 /* Create a reloc for the branch lookup table entry. */
4102 Elf_Internal_Rela rela;
4103 Elf64_External_Rela *r;
5d1634d7 4104
721956f4
AM		 4105 rela.r_offset = (br_entry->offset
4106 + htab->sbrlt->output_offset
4107 + htab->sbrlt->output_section->vma);
4108 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4109 rela.r_addend = off;
4110
4111 r = (Elf64_External_Rela *) htab->srelbrlt->contents;
4112 r += htab->srelbrlt->reloc_count++;
4113 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r);
4114 }
4115
4116 off = (br_entry->offset
4117 + htab->sbrlt->output_offset
4118 + htab->sbrlt->output_section->vma
4119 - elf_gp (htab->sbrlt->output_section->owner)
4120 - TOC_BASE_OFF);
4121
4122 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 4123 {
4124 (*_bfd_error_handler)
e86ce104 4125 (_("linkage table error against `%s'"),
721956f4 4126 stub_entry->root.string);
5d1634d7 4127 bfd_set_error (bfd_error_bad_value);
721956f4 4128 htab->stub_error = true;
5d1634d7
AM		 4129 return false;
4130 }
41bd81ab 4131
721956f4
AM		 4132 indx = off;
4133 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
4134 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
4135 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
4136 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
4137 size = 16;
4138 break;
5d1634d7 4139
721956f4 4140 case ppc_stub_plt_call:
5d1634d7 4141 /* Build the .glink lazy link call stub. */
721956f4
AM		 4142 p = htab->sglink->contents + htab->sglink->_cooked_size;
4143 indx = htab->sglink->reloc_count;
5d1634d7
AM		 4144 if (indx < 0x8000)
4145 {
721956f4 4146 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
5d1634d7
AM		 4147 p += 4;
4148 }
4149 else
4150 {
721956f4 4151 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
5d1634d7 4152 p += 4;
721956f4 4153 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
5d1634d7
AM		 4154 p += 4;
4155 }
721956f4
AM		 4156 bfd_put_32 (htab->sglink->owner,
4157 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
5d1634d7 4158 p += 4;
721956f4
AM		 4159 htab->sglink->_cooked_size = p - htab->sglink->contents;
4160 htab->sglink->reloc_count += 1;
4161
4162 /* Now build the stub. */
4163 off = stub_entry->h->elf.plt.offset;
4164 if (off >= (bfd_vma) -2)
4165 abort ();
4166
4167 off &= ~ (bfd_vma) 1;
4168 off += (htab->splt->output_offset
4169 + htab->splt->output_section->vma
4170 - elf_gp (htab->splt->output_section->owner)
4171 - TOC_BASE_OFF);
4172
4173 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
4174 {
4175 (*_bfd_error_handler)
4176 (_("linkage table error against `%s'"),
4177 stub_entry->h->elf.root.root.string);
4178 bfd_set_error (bfd_error_bad_value);
4179 htab->stub_error = true;
4180 return false;
4181 }
4182
4183 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
4184 size = p - loc;
4185 break;
4186
4187 default:
4188 BFD_FAIL ();
4189 return false;
4190 }
4191
4192 stub_sec->_cooked_size += size;
4193 return true;
4194}
4195
4196/* As above, but don't actually build the stub. Just bump offset so
4197 we know stub section sizes, and select plt_branch stubs where
4198 long_branch stubs won't do. */
4199
4200static boolean
4201ppc_size_one_stub (gen_entry, in_arg)
4202 struct bfd_hash_entry *gen_entry;
4203 PTR in_arg;
4204{
4205 struct ppc_stub_hash_entry *stub_entry;
4206 struct ppc_link_hash_table *htab;
4207 bfd_vma off;
4208 int size;
4209
4210 /* Massage our args to the form they really have. */
4211 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4212 htab = (struct ppc_link_hash_table *) in_arg;
4213
4214 if (stub_entry->stub_type == ppc_stub_plt_call)
4215 {
4216 off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1;
4217 off += (htab->splt->output_offset
4218 + htab->splt->output_section->vma
4219 - elf_gp (htab->splt->output_section->owner)
4220 - TOC_BASE_OFF);
4221
4222 size = 28;
4223 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
4224 size += 4;
4225 }
4226 else
4227 {
4228 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
4229 stub_entry->stub_type = ppc_stub_long_branch;
4230 size = 4;
4231
4232 off = (stub_entry->target_value
4233 + stub_entry->target_section->output_offset
4234 + stub_entry->target_section->output_section->vma);
4235 off -= (stub_entry->stub_sec->_raw_size
4236 + stub_entry->stub_sec->output_offset
4237 + stub_entry->stub_sec->output_section->vma);
4238
4239 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
4240 {
4241 struct ppc_branch_hash_entry *br_entry;
4242
4243 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4244 stub_entry->root.string + 9,
4245 true, false);
4246 if (br_entry == NULL)
4247 {
4248 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
4249 stub_entry->root.string + 9);
4250 htab->stub_error = true;
4251 return false;
4252 }
4253
4254 if (br_entry->iter != htab->stub_iteration)
4255 {
4256 br_entry->iter = htab->stub_iteration;
4257 br_entry->offset = htab->sbrlt->_raw_size;
4258 htab->sbrlt->_raw_size += 8;
4259 }
4260 stub_entry->stub_type = ppc_stub_plt_branch;
4261 size = 16;
4262 }
4263 }
4264
4265 stub_entry->stub_sec->_raw_size += size;
4266 return true;
4267}
4268
4269/* Set up various things so that we can make a list of input sections
4270 for each output section included in the link. Returns -1 on error,
4271 0 when no stubs will be needed, and 1 on success. */
4272
4273int
4274ppc64_elf_setup_section_lists (output_bfd, info)
4275 bfd *output_bfd;
4276 struct bfd_link_info *info;
4277{
4278 bfd *input_bfd;
4279 unsigned int bfd_count;
4280 int top_id, top_index;
4281 asection *section;
4282 asection **input_list, **list;
4283 bfd_size_type amt;
4284 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4285
805fc799
AM		 4286 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
4287 || htab->sbrlt == NULL)
721956f4
AM		 4288 return 0;
4289
4290 /* Count the number of input BFDs and find the top input section id. */
4291 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
4292 input_bfd != NULL;
4293 input_bfd = input_bfd->link_next)
4294 {
4295 bfd_count += 1;
4296 for (section = input_bfd->sections;
4297 section != NULL;
4298 section = section->next)
4299 {
4300 if (top_id < section->id)
4301 top_id = section->id;
4302 }
4303 }
4304 htab->bfd_count = bfd_count;
4305
4306 amt = sizeof (struct map_stub) * (top_id + 1);
4307 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
4308 if (htab->stub_group == NULL)
4309 return -1;
4310
4311 /* We can't use output_bfd->section_count here to find the top output
4312 section index as some sections may have been removed, and
4313 _bfd_strip_section_from_output doesn't renumber the indices. */
4314 for (section = output_bfd->sections, top_index = 0;
4315 section != NULL;
4316 section = section->next)
4317 {
4318 if (top_index < section->index)
4319 top_index = section->index;
4320 }
4321
4322 htab->top_index = top_index;
4323 amt = sizeof (asection *) * (top_index + 1);
4324 input_list = (asection **) bfd_malloc (amt);
4325 htab->input_list = input_list;
4326 if (input_list == NULL)
4327 return -1;
4328
4329 /* For sections we aren't interested in, mark their entries with a
4330 value we can check later. */
4331 list = input_list + top_index;
4332 do
4333 *list = bfd_abs_section_ptr;
4334 while (list-- != input_list);
4335
4336 for (section = output_bfd->sections;
4337 section != NULL;
4338 section = section->next)
4339 {
4340 if ((section->flags & SEC_CODE) != 0)
4341 input_list[section->index] = NULL;
4342 }
4343
4344 return 1;
4345}
4346
4347/* The linker repeatedly calls this function for each input section,
4348 in the order that input sections are linked into output sections.
4349 Build lists of input sections to determine groupings between which
4350 we may insert linker stubs. */
4351
4352void
805fc799 4353ppc64_elf_next_input_section (info, isec)
721956f4
AM		 4354 struct bfd_link_info *info;
4355 asection *isec;
4356{
4357 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4358
805fc799 4359 if (isec->output_section->index <= htab->top_index)
721956f4
AM		 4360 {
4361 asection **list = htab->input_list + isec->output_section->index;
4362 if (*list != bfd_abs_section_ptr)
4363 {
4364 /* Steal the link_sec pointer for our list. */
4365#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
4366 /* This happens to make the list in reverse order,
4367 which is what we want. */
4368 PREV_SEC (isec) = *list;
4369 *list = isec;
4370 }
4371 }
4372}
4373
4374/* See whether we can group stub sections together. Grouping stub
4375 sections may result in fewer stubs. More importantly, we need to
4376 put all .init* and .fini* stubs at the beginning of the .init or
4377 .fini output sections respectively, because glibc splits the
4378 _init and _fini functions into multiple parts. Putting a stub in
4379 the middle of a function is not a good idea. */
4380
4381static void
4382group_sections (htab, stub_group_size, stubs_always_before_branch)
4383 struct ppc_link_hash_table *htab;
4384 bfd_size_type stub_group_size;
4385 boolean stubs_always_before_branch;
4386{
4387 asection **list = htab->input_list + htab->top_index;
4388 do
4389 {
4390 asection *tail = *list;
4391 if (tail == bfd_abs_section_ptr)
4392 continue;
4393 while (tail != NULL)
4394 {
4395 asection *curr;
4396 asection *prev;
4397 bfd_size_type total;
4398
4399 curr = tail;
4400 if (tail->_cooked_size)
4401 total = tail->_cooked_size;
4402 else
4403 total = tail->_raw_size;
4404 while ((prev = PREV_SEC (curr)) != NULL
4405 && ((total += curr->output_offset - prev->output_offset)
4406 < stub_group_size))
4407 curr = prev;
4408
4409 /* OK, the size from the start of CURR to the end is less
4410 than stub_group_size and thus can be handled by one stub
4411 section. (or the tail section is itself larger than
4412 stub_group_size, in which case we may be toast.) We
4413 should really be keeping track of the total size of stubs
4414 added here, as stubs contribute to the final output
4415 section size. That's a little tricky, and this way will
4416 only break if stubs added make the total size more than
4417 2^25, ie. for the default stub_group_size, if stubs total
4418 more than 2834432 bytes, or over 100000 plt call stubs. */
4419 do
4420 {
4421 prev = PREV_SEC (tail);
4422 /* Set up this stub group. */
4423 htab->stub_group[tail->id].link_sec = curr;
4424 }
4425 while (tail != curr && (tail = prev) != NULL);
4426
4427 /* But wait, there's more! Input sections up to stub_group_size
4428 bytes before the stub section can be handled by it too. */
4429 if (!stubs_always_before_branch)
4430 {
4431 total = 0;
4432 while (prev != NULL
4433 && ((total += tail->output_offset - prev->output_offset)
4434 < stub_group_size))
4435 {
4436 tail = prev;
4437 prev = PREV_SEC (tail);
4438 htab->stub_group[tail->id].link_sec = curr;
4439 }
4440 }
4441 tail = prev;
4442 }
4443 }
4444 while (list-- != htab->input_list);
4445 free (htab->input_list);
4446#undef PREV_SEC
4447}
4448
4449/* Read in all local syms for all input bfds. */
4450
4451static boolean
4452get_local_syms (input_bfd, htab)
4453 bfd *input_bfd;
4454 struct ppc_link_hash_table *htab;
4455{
4456 unsigned int bfd_indx;
4457 Elf_Internal_Sym *local_syms, **all_local_syms;
4458
4459 /* We want to read in symbol extension records only once. To do this
4460 we need to read in the local symbols in parallel and save them for
4461 later use; so hold pointers to the local symbols in an array. */
4462 bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
4463 all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt);
4464 htab->all_local_syms = all_local_syms;
4465 if (all_local_syms == NULL)
4466 return false;
4467
4468 /* Walk over all the input BFDs, swapping in local symbols.
4469 If we are creating a shared library, create hash entries for the
4470 export stubs. */
4471 for (bfd_indx = 0;
4472 input_bfd != NULL;
4473 input_bfd = input_bfd->link_next, bfd_indx++)
4474 {
4475 Elf_Internal_Shdr *symtab_hdr;
4476 Elf_Internal_Shdr *shndx_hdr;
4477 Elf_Internal_Sym *isym;
4478 Elf64_External_Sym *ext_syms, *esym, *end_sy;
4479 Elf_External_Sym_Shndx *shndx_buf, *shndx;
4480 bfd_size_type sec_size;
4481
4482 /* We'll need the symbol table in a second. */
4483 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4484 if (symtab_hdr->sh_info == 0)
4485 continue;
4486
4487 /* We need an array of the local symbols attached to the input bfd.
4488 Unfortunately, we're going to have to read & swap them in. */
4489 sec_size = symtab_hdr->sh_info;
4490 sec_size *= sizeof (Elf_Internal_Sym);
4491 local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size);
4492 if (local_syms == NULL)
4493 return false;
4494
4495 all_local_syms[bfd_indx] = local_syms;
4496 sec_size = symtab_hdr->sh_info;
4497 sec_size *= sizeof (Elf64_External_Sym);
4498 ext_syms = (Elf64_External_Sym *) bfd_malloc (sec_size);
4499 if (ext_syms == NULL)
4500 return false;
4501
4502 if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
4503 || bfd_bread ((PTR) ext_syms, sec_size, input_bfd) != sec_size)
4504 {
4505 error_ret_free_ext_syms:
4506 free (ext_syms);
4507 return false;
4508 }
4509
4510 shndx_buf = NULL;
4511 shndx_hdr = &elf_tdata (input_bfd)->symtab_shndx_hdr;
4512 if (shndx_hdr->sh_size != 0)
4513 {
4514 sec_size = symtab_hdr->sh_info;
4515 sec_size *= sizeof (Elf_External_Sym_Shndx);
4516 shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (sec_size);
4517 if (shndx_buf == NULL)
4518 goto error_ret_free_ext_syms;
4519
4520 if (bfd_seek (input_bfd, shndx_hdr->sh_offset, SEEK_SET) != 0
4521 || bfd_bread ((PTR) shndx_buf, sec_size, input_bfd) != sec_size)
4522 {
4523 free (shndx_buf);
4524 goto error_ret_free_ext_syms;
4525 }
4526 }
4527
4528 /* Swap the local symbols in. */
4529 for (esym = ext_syms, end_sy = esym + symtab_hdr->sh_info,
4530 isym = local_syms, shndx = shndx_buf;
4531 esym < end_sy;
4532 esym++, isym++, shndx = (shndx ? shndx + 1 : NULL))
4533 bfd_elf64_swap_symbol_in (input_bfd, esym, shndx, isym);
4534
4535 /* Now we can free the external symbols. */
4536 free (shndx_buf);
4537 free (ext_syms);
5bd4f169 4538 }
721956f4 4539
5d1634d7
AM		 4540 return true;
4541}
5bd4f169 4542
721956f4
AM		 4543/* Determine and set the size of the stub section for a final link.
4544
4545 The basic idea here is to examine all the relocations looking for
4546 PC-relative calls to a target that is unreachable with a "bl"
4547 instruction. */
4548
4549boolean
4550ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
4551 add_stub_section, layout_sections_again)
4552 bfd *output_bfd;
4553 bfd *stub_bfd;
4554 struct bfd_link_info *info;
4555 bfd_signed_vma group_size;
4556 asection * (*add_stub_section) PARAMS ((const char *, asection *));
4557 void (*layout_sections_again) PARAMS ((void));
4558{
4559 bfd_size_type stub_group_size;
4560 boolean stubs_always_before_branch;
4561 boolean ret = false;
4562 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4563
4564 /* Stash our params away. */
4565 htab->stub_bfd = stub_bfd;
4566 htab->add_stub_section = add_stub_section;
4567 htab->layout_sections_again = layout_sections_again;
4568 stubs_always_before_branch = group_size < 0;
4569 if (group_size < 0)
4570 stub_group_size = -group_size;
4571 else
4572 stub_group_size = group_size;
4573 if (stub_group_size == 1)
4574 {
4575 /* Default values. */
4576 stub_group_size = 30720000;
4577 if (htab->has_14bit_branch)
4578 stub_group_size = 30000;
4579 }
4580
4581 group_sections (htab, stub_group_size, stubs_always_before_branch);
4582
4583 if (! get_local_syms (info->input_bfds, htab))
4584 {
4585 if (htab->all_local_syms)
4586 goto error_ret_free_local;
4587 return false;
4588 }
4589
4590 while (1)
4591 {
4592 bfd *input_bfd;
4593 unsigned int bfd_indx;
4594 asection *stub_sec;
4595 boolean stub_changed;
4596
4597 htab->stub_iteration += 1;
4598 stub_changed = false;
4599
4600 for (input_bfd = info->input_bfds, bfd_indx = 0;
4601 input_bfd != NULL;
4602 input_bfd = input_bfd->link_next, bfd_indx++)
4603 {
4604 Elf_Internal_Shdr *symtab_hdr;
4605 asection *section;
4606 Elf_Internal_Sym *local_syms;
4607
4608 /* We'll need the symbol table in a second. */
4609 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4610 if (symtab_hdr->sh_info == 0)
4611 continue;
4612
4613 local_syms = htab->all_local_syms[bfd_indx];
4614
4615 /* Walk over each section attached to the input bfd. */
4616 for (section = input_bfd->sections;
4617 section != NULL;
4618 section = section->next)
4619 {
4620 Elf_Internal_Shdr *input_rel_hdr;
4621 Elf64_External_Rela *external_relocs, *erelaend, *erela;
4622 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4623 bfd_size_type amt;
4624
4625 /* If there aren't any relocs, then there's nothing more
4626 to do. */
4627 if ((section->flags & SEC_RELOC) == 0
4628 || section->reloc_count == 0)
4629 continue;
4630
4631 /* If this section is a link-once section that will be
4632 discarded, then don't create any stubs. */
4633 if (section->output_section == NULL
4634 || section->output_section->owner != output_bfd)
4635 continue;
4636
4637 /* Allocate space for the external relocations. */
4638 amt = section->reloc_count;
4639 amt *= sizeof (Elf64_External_Rela);
4640 external_relocs = (Elf64_External_Rela *) bfd_malloc (amt);
4641 if (external_relocs == NULL)
4642 {
4643 goto error_ret_free_local;
4644 }
4645
4646 /* Likewise for the internal relocations. */
4647 amt = section->reloc_count;
4648 amt *= sizeof (Elf_Internal_Rela);
4649 internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt);
4650 if (internal_relocs == NULL)
4651 {
4652 free (external_relocs);
4653 goto error_ret_free_local;
4654 }
4655
4656 /* Read in the external relocs. */
4657 input_rel_hdr = &elf_section_data (section)->rel_hdr;
4658 if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
4659 || bfd_bread ((PTR) external_relocs,
4660 input_rel_hdr->sh_size,
4661 input_bfd) != input_rel_hdr->sh_size)
4662 {
4663 free (external_relocs);
4664 error_ret_free_internal:
4665 free (internal_relocs);
4666 goto error_ret_free_local;
4667 }
4668
4669 /* Swap in the relocs. */
4670 erela = external_relocs;
4671 erelaend = erela + section->reloc_count;
4672 irela = internal_relocs;
4673 for (; erela < erelaend; erela++, irela++)
4674 bfd_elf64_swap_reloca_in (input_bfd, erela, irela);
4675
4676 /* We're done with the external relocs, free them. */
4677 free (external_relocs);
4678
4679 /* Now examine each relocation. */
4680 irela = internal_relocs;
4681 irelaend = irela + section->reloc_count;
4682 for (; irela < irelaend; irela++)
4683 {
4684 unsigned int r_type, r_indx;
4685 enum ppc_stub_type stub_type;
4686 struct ppc_stub_hash_entry *stub_entry;
4687 asection *sym_sec;
4688 bfd_vma sym_value;
4689 bfd_vma destination;
4690 struct ppc_link_hash_entry *hash;
4691 char *stub_name;
4692 const asection *id_sec;
4693
4694 r_type = ELF64_R_TYPE (irela->r_info);
4695 r_indx = ELF64_R_SYM (irela->r_info);
4696
4697 if (r_type >= (unsigned int) R_PPC_max)
4698 {
4699 bfd_set_error (bfd_error_bad_value);
4700 goto error_ret_free_internal;
4701 }
4702
4703 /* Only look for stubs on branch instructions. */
4704 if (r_type != (unsigned int) R_PPC64_REL24
4705 && r_type != (unsigned int) R_PPC64_REL14
4706 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
4707 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
4708 continue;
4709
4710 /* Now determine the call target, its name, value,
4711 section. */
4712 sym_sec = NULL;
4713 sym_value = 0;
4714 destination = 0;
4715 hash = NULL;
4716 if (r_indx < symtab_hdr->sh_info)
4717 {
4718 /* It's a local symbol. */
4719 Elf_Internal_Sym *sym;
4720 Elf_Internal_Shdr *hdr;
4721
4722 sym = local_syms + r_indx;
4723 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4724 sym_sec = hdr->bfd_section;
4725 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4726 sym_value = sym->st_value;
4727 destination = (sym_value + irela->r_addend
4728 + sym_sec->output_offset
4729 + sym_sec->output_section->vma);
4730 }
4731 else
4732 {
4733 /* It's an external symbol. */
4734 int e_indx;
4735
4736 e_indx = r_indx - symtab_hdr->sh_info;
4737 hash = ((struct ppc_link_hash_entry *)
4738 elf_sym_hashes (input_bfd)[e_indx]);
4739
4740 while (hash->elf.root.type == bfd_link_hash_indirect
4741 || hash->elf.root.type == bfd_link_hash_warning)
4742 hash = ((struct ppc_link_hash_entry *)
4743 hash->elf.root.u.i.link);
4744
4745 if (hash->elf.root.type == bfd_link_hash_defined
4746 || hash->elf.root.type == bfd_link_hash_defweak)
4747 {
4748 sym_sec = hash->elf.root.u.def.section;
4749 sym_value = hash->elf.root.u.def.value;
4750 if (sym_sec->output_section != NULL)
4751 destination = (sym_value + irela->r_addend
4752 + sym_sec->output_offset
4753 + sym_sec->output_section->vma);
4754 }
4755 else if (hash->elf.root.type == bfd_link_hash_undefweak)
4756 ;
4757 else if (hash->elf.root.type == bfd_link_hash_undefined)
4758 ;
4759 else
4760 {
4761 bfd_set_error (bfd_error_bad_value);
4762 goto error_ret_free_internal;
4763 }
4764 }
4765
4766 /* Determine what (if any) linker stub is needed. */
4767 stub_type = ppc_type_of_stub (section, irela, &hash,
4768 destination);
4769 if (stub_type == ppc_stub_none)
4770 continue;
4771
4772 /* Support for grouping stub sections. */
4773 id_sec = htab->stub_group[section->id].link_sec;
4774
4775 /* Get the name of this stub. */
4776 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
4777 if (!stub_name)
4778 goto error_ret_free_internal;
4779
4780 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4781 stub_name, false, false);
4782 if (stub_entry != NULL)
4783 {
4784 /* The proper stub has already been created. */
4785 free (stub_name);
4786 continue;
4787 }
4788
4789 stub_entry = ppc_add_stub (stub_name, section, htab);
4790 if (stub_entry == NULL)
4791 {
4792 free (stub_name);
4793 goto error_ret_free_local;
4794 }
4795
4796 stub_entry->target_value = sym_value;
4797 stub_entry->target_section = sym_sec;
4798 stub_entry->stub_type = stub_type;
4799 stub_entry->h = hash;
4800 stub_changed = true;
4801 }
4802
4803 /* We're done with the internal relocs, free them. */
4804 free (internal_relocs);
4805 }
4806 }
4807
4808 if (!stub_changed)
4809 break;
4810
4811 /* OK, we've added some stubs. Find out the new size of the
4812 stub sections. */
4813 for (stub_sec = htab->stub_bfd->sections;
4814 stub_sec != NULL;
4815 stub_sec = stub_sec->next)
4816 {
4817 stub_sec->_raw_size = 0;
4818 stub_sec->_cooked_size = 0;
4819 }
4820 htab->sbrlt->_raw_size = 0;
4821 htab->sbrlt->_cooked_size = 0;
4822
4823 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
4824
4825 /* Ask the linker to do its stuff. */
4826 (*htab->layout_sections_again) ();
4827 }
4828
4829 if (htab->sbrlt->_raw_size == 0)
4830 {
4831 _bfd_strip_section_from_output (info, htab->sbrlt);
4832 if (htab->srelbrlt != NULL)
4833 _bfd_strip_section_from_output (info, htab->srelbrlt);
4834 }
4835
4836 ret = true;
4837
4838 error_ret_free_local:
4839 while (htab->bfd_count-- > 0)
4840 if (htab->all_local_syms[htab->bfd_count])
4841 free (htab->all_local_syms[htab->bfd_count]);
4842 free (htab->all_local_syms);
4843
4844 return ret;
4845}
4846
4847/* Called after we have determined section placement. If sections
805fc799 4848 move, we'll be called again. Provide a value for TOCstart. */
721956f4 4849
805fc799
AM		 4850bfd_vma
4851ppc64_elf_toc (obfd)
5d1634d7 4852 bfd *obfd;
721956f4 4853{
805fc799
AM		 4854 asection *s;
4855 bfd_vma TOCstart;
721956f4 4856
805fc799
AM		 4857 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
4858 order. The TOC starts where the first of these sections starts. */
4859 s = bfd_get_section_by_name (obfd, ".got");
4860 if (s == NULL)
4861 s = bfd_get_section_by_name (obfd, ".toc");
4862 if (s == NULL)
4863 s = bfd_get_section_by_name (obfd, ".tocbss");
4864 if (s == NULL)
4865 s = bfd_get_section_by_name (obfd, ".plt");
4866 if (s == NULL)
4867 {
4868 /* This may happen for
4869 o references to TOC base (SYM@toc / TOC[tc0]) without a
4870 .toc directive
4871 o bad linker script
4872 o --gc-sections and empty TOC sections
4873
4874 FIXME: Warn user? */
4875
4876 /* Look for a likely section. We probably won't even be
4877 using TOCstart. */
4878 for (s = obfd->sections; s != NULL; s = s->next)
4879 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
4880 == (SEC_ALLOC | SEC_SMALL_DATA))
4881 break;
721956f4 4882 if (s == NULL)
805fc799
AM		 4883 for (s = obfd->sections; s != NULL; s = s->next)
4884 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
4885 == (SEC_ALLOC | SEC_SMALL_DATA))
4886 break;
721956f4 4887 if (s == NULL)
805fc799
AM		 4888 for (s = obfd->sections; s != NULL; s = s->next)
4889 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
4890 break;
721956f4 4891 if (s == NULL)
805fc799
AM		 4892 for (s = obfd->sections; s != NULL; s = s->next)
4893 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
4894 break;
4895 }
721956f4 4896
805fc799
AM		 4897 TOCstart = 0;
4898 if (s != NULL)
4899 TOCstart = s->output_section->vma + s->output_offset;
721956f4 4900
805fc799 4901 return TOCstart;
721956f4
AM		 4902}
4903
4904/* Build all the stubs associated with the current output file.
4905 The stubs are kept in a hash table attached to the main linker
4906 hash table. This function is called via gldelf64ppc_finish. */
4907
4908boolean
4909ppc64_elf_build_stubs (info)
4910 struct bfd_link_info *info;
5d1634d7
AM		 4911{
4912 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 4913 asection *stub_sec;
5d1634d7
AM		 4914 bfd_vma plt_r2;
4915 bfd_byte *p;
4916
721956f4
AM		 4917 for (stub_sec = htab->stub_bfd->sections;
4918 stub_sec != NULL;
4919 stub_sec = stub_sec->next)
4920 {
4921 bfd_size_type size;
4922
4923 /* Allocate memory to hold the linker stubs. */
4924 size = stub_sec->_raw_size;
4925 if (size != 0)
4926 {
4927 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
4928 if (stub_sec->contents == NULL)
4929 return false;
4930 }
4931 stub_sec->_cooked_size = 0;
4932 }
5d1634d7 4933
721956f4 4934 if (htab->splt != NULL)
5d1634d7 4935 {
721956f4
AM		 4936 /* Build the .glink plt call stub. */
4937 plt_r2 = (htab->splt->output_offset
4938 + htab->splt->output_section->vma
4939 - elf_gp (htab->splt->output_section->owner)
4940 - TOC_BASE_OFF);
4941 p = htab->sglink->contents;
4942 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
4943 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
4944 {
4945 bfd_put_32 (htab->sglink->owner, NOP, p);
4946 p += 4;
4947 }
4948 htab->sglink->_cooked_size = p - htab->sglink->contents;
4949
4950 /* Use reloc_count to count entries. */
4951 htab->sglink->reloc_count = 0;
5d1634d7 4952 }
5d1634d7 4953
721956f4
AM		 4954 if (htab->sbrlt->_raw_size != 0)
4955 {
4956 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
4957 htab->sbrlt->_raw_size);
4958 if (htab->sbrlt->contents == NULL)
4959 return false;
4960 }
5d1634d7 4961
721956f4
AM		 4962 /* Build the stubs as directed by the stub hash table. */
4963 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7
AM		 4964 htab->sglink->reloc_count = 0;
4965
721956f4
AM		 4966 for (stub_sec = htab->stub_bfd->sections;
4967 stub_sec != NULL;
4968 stub_sec = stub_sec->next)
4969 {
4970 if (stub_sec->_raw_size != stub_sec->_cooked_size)
4971 break;
4972 }
5d1634d7 4973
721956f4 4974 if (stub_sec != NULL
5d1634d7
AM		 4975 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
4976 {
721956f4
AM		 4977 htab->stub_error = true;
4978 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 4979 }
721956f4
AM		 4980
4981 return !htab->stub_error;
5bd4f169
AM		 4982}
4983
4984/* Set up any other section flags and such that may be necessary. */
4985
4986static boolean
4987ppc64_elf_fake_sections (abfd, shdr, asect)
4988 bfd *abfd ATTRIBUTE_UNUSED;
4989 Elf64_Internal_Shdr *shdr;
4990 asection *asect;
4991{
4992 if ((asect->flags & SEC_EXCLUDE) != 0)
4993 shdr->sh_flags |= SHF_EXCLUDE;
4994
4995 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
4996 shdr->sh_type = SHT_ORDERED;
4997
4998 return true;
4999}
5000
5001/* The RELOCATE_SECTION function is called by the ELF backend linker
5002 to handle the relocations for a section.
5003
5004 The relocs are always passed as Rela structures; if the section
5005 actually uses Rel structures, the r_addend field will always be
5006 zero.
5007
5008 This function is responsible for adjust the section contents as
5009 necessary, and (if using Rela relocs and generating a
5010 relocateable output file) adjusting the reloc addend as
5011 necessary.
5012
5013 This function does not have to worry about setting the reloc
5014 address or the reloc symbol index.
5015
5016 LOCAL_SYMS is a pointer to the swapped in local symbols.
5017
5018 LOCAL_SECTIONS is an array giving the section in the input file
5019 corresponding to the st_shndx field of each local symbol.
5020
5021 The global hash table entry for the global symbols can be found
5022 via elf_sym_hashes (input_bfd).
5023
5024 When generating relocateable output, this function must handle
5025 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5026 going to be the section symbol corresponding to the output
5027 section, which means that the addend must be adjusted
5028 accordingly. */
5029
5030static boolean
5031ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
5032 contents, relocs, local_syms, local_sections)
5033 bfd *output_bfd;
5034 struct bfd_link_info *info;
5035 bfd *input_bfd;
5036 asection *input_section;
5037 bfd_byte *contents;
5038 Elf_Internal_Rela *relocs;
5039 Elf_Internal_Sym *local_syms;
5040 asection **local_sections;
5041{
65f38f15 5042 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5043 Elf_Internal_Shdr *symtab_hdr;
5044 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5045 Elf_Internal_Rela *rel;
5046 Elf_Internal_Rela *relend;
5bd4f169
AM		 5047 bfd_vma *local_got_offsets;
5048 bfd_vma TOCstart;
5049 boolean ret = true;
41bd81ab 5050 boolean is_opd;
96e0dda4
AM		 5051 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
5052 boolean is_power4 = false;
5bd4f169 5053
65f38f15 5054 /* Initialize howto table if needed. */
5bd4f169 5055 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 5056 ppc_howto_init ();
5057
65f38f15 5058 htab = ppc_hash_table (info);
5bd4f169 5059 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 5060 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 5061 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5062 sym_hashes = elf_sym_hashes (input_bfd);
41bd81ab 5063 is_opd = strcmp (bfd_get_section_name (abfd, input_section), ".opd") == 0;
65f38f15 5064
5bd4f169
AM		 5065 rel = relocs;
5066 relend = relocs + input_section->reloc_count;
5067 for (; rel < relend; rel++)
5068 {
5069 enum elf_ppc_reloc_type r_type;
5070 bfd_vma offset;
5071 bfd_vma addend;
5072 bfd_reloc_status_type r;
5073 Elf_Internal_Sym *sym;
5074 asection *sec;
5075 struct elf_link_hash_entry *h;
721956f4 5076 struct elf_link_hash_entry *fdh;
5bd4f169 5077 const char *sym_name;
5bd4f169
AM		 5078 unsigned long r_symndx;
5079 bfd_vma relocation;
65f38f15 5080 boolean unresolved_reloc;
dc810e39 5081 long insn;
721956f4
AM		 5082 struct ppc_stub_hash_entry *stub_entry;
5083 bfd_vma max_br_offset;
5084 bfd_vma from;
5bd4f169
AM		 5085
5086 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169
AM		 5087 r_symndx = ELF64_R_SYM (rel->r_info);
5088
5089 if (info->relocateable)
5090 {
5091 /* This is a relocatable link. We don't have to change
5092 anything, unless the reloc is against a section symbol,
5093 in which case we have to adjust according to where the
5094 section symbol winds up in the output section. */
5095 if (r_symndx < symtab_hdr->sh_info)
5096 {
5097 sym = local_syms + r_symndx;
5098 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
5099 {
5100 sec = local_sections[r_symndx];
65f38f15 5101 rel->r_addend += sec->output_offset + sym->st_value;
5bd4f169
AM		 5102 }
5103 }
5bd4f169
AM		 5104 continue;
5105 }
5106
5107 /* This is a final link. */
5108
65f38f15
AM		 5109 offset = rel->r_offset;
5110 addend = rel->r_addend;
5111 r = bfd_reloc_other;
5112 sym = (Elf_Internal_Sym *) 0;
5113 sec = (asection *) 0;
5114 h = (struct elf_link_hash_entry *) 0;
5115 sym_name = (const char *) 0;
5116 unresolved_reloc = false;
5117
5bd4f169
AM		 5118 if (r_type == R_PPC64_TOC)
5119 {
5120 /* Relocation value is TOC base. Symbol is ignored. */
5121 relocation = TOCstart + TOC_BASE_OFF;
5122 }
5123 else if (r_symndx < symtab_hdr->sh_info)
5124 {
5125 /* It's a local symbol. */
5126 sym = local_syms + r_symndx;
5127 sec = local_sections[r_symndx];
5128 sym_name = "<local symbol>";
5129
f8df10f4 5130 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
f46c2da6
AM		 5131 /* rel may have changed, update our copy of addend. */
5132 addend = rel->r_addend;
5bd4f169
AM		 5133 }
5134 else
5135 {
5136 /* It's a global symbol. */
5137 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5138 while (h->root.type == bfd_link_hash_indirect
5139 || h->root.type == bfd_link_hash_warning)
5140 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5141 sym_name = h->root.root.string;
65f38f15 5142 relocation = 0;
5bd4f169
AM		 5143 if (h->root.type == bfd_link_hash_defined
5144 || h->root.type == bfd_link_hash_defweak)
5145 {
5146 sec = h->root.u.def.section;
65f38f15
AM		 5147 if (sec->output_section == NULL)
5148 /* Set a flag that will be cleared later if we find a
5149 relocation value for this symbol. output_section
5150 is typically NULL for symbols satisfied by a shared
5151 library. */
5152 unresolved_reloc = true;
5bd4f169
AM		 5153 else
5154 relocation = (h->root.u.def.value
5155 + sec->output_section->vma
5156 + sec->output_offset);
5157 }
5158 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 5159 ;
671bae9c 5160 else if (info->shared
65f38f15
AM		 5161 && (!info->symbolic || info->allow_shlib_undefined)
5162 && !info->no_undefined
5163 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5164 ;
5bd4f169
AM		 5165 else
5166 {
5167 if (! ((*info->callbacks->undefined_symbol)
5168 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 5169 offset, (!info->shared
5170 || info->no_undefined
5171 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169 5172 return false;
5bd4f169
AM		 5173 }
5174 }
5175
65f38f15 5176 /* First handle relocations that tweak non-addend part of insn. */
86c76c7b 5177 insn = 0;
65f38f15 5178 switch (r_type)
5bd4f169
AM		 5179 {
5180 default:
65f38f15 5181 break;
5bd4f169 5182
65f38f15
AM		 5183 /* Branch taken prediction relocations. */
5184 case R_PPC64_ADDR14_BRTAKEN:
5185 case R_PPC64_REL14_BRTAKEN:
96e0dda4 5186 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
86c76c7b 5187 /* Fall thru. */
65f38f15 5188
86c76c7b 5189 /* Branch not taken prediction relocations. */
65f38f15
AM		 5190 case R_PPC64_ADDR14_BRNTAKEN:
5191 case R_PPC64_REL14_BRNTAKEN:
86c76c7b 5192 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
96e0dda4
AM		 5193 if (is_power4)
5194 {
5195 /* Set 'a' bit. This is 0b00010 in BO field for branch
5196 on CR(BI) insns (BO == 001at or 011at), and 0b01000
5197 for branch on CTR insns (BO == 1a00t or 1a01t). */
5198 if ((insn & (0x14 << 21)) == (0x04 << 21))
5199 insn |= 0x02 << 21;
5200 else if ((insn & (0x14 << 21)) == (0x10 << 21))
5201 insn |= 0x08 << 21;
5202 else
5203 break;
5204 }
65f38f15 5205 else
96e0dda4 5206 {
805fc799
AM		 5207 from = (offset
5208 + input_section->output_offset
5209 + input_section->output_section->vma);
5210
96e0dda4 5211 /* Invert 'y' bit if not the default. */
805fc799 5212 if ((bfd_signed_vma) (relocation + addend - from) < 0)
96e0dda4
AM		 5213 insn ^= 0x01 << 21;
5214 }
86c76c7b 5215
65f38f15
AM		 5216 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
5217 break;
5bd4f169 5218
65f38f15 5219 case R_PPC64_REL24:
721956f4
AM		 5220 /* A REL24 branching to a linkage function is followed by a
5221 nop. We replace the nop with a ld in order to restore
5222 the TOC base pointer. Only calls to shared objects need
5223 to alter the TOC base. These are recognized by their
5224 need for a PLT entry. */
5bd4f169 5225 if (h != NULL
721956f4
AM		 5226 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
5227 && fdh->plt.offset != (bfd_vma) -1
5228 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
5229 rel, htab)) != NULL)
41bd81ab 5230 {
721956f4
AM		 5231 boolean can_plt_call = 0;
5232
41bd81ab
AM		 5233 if (offset + 8 <= input_section->_cooked_size)
5234 {
721956f4
AM		 5235 insn = bfd_get_32 (input_bfd, contents + offset + 4);
5236 if (insn == NOP
5237 || insn == CROR_151515 || insn == CROR_313131)
41bd81ab 5238 {
721956f4
AM		 5239 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
5240 contents + offset + 4);
5241 can_plt_call = 1;
41bd81ab 5242 }
5bd4f169 5243 }
721956f4
AM		 5244
5245 if (!can_plt_call)
5246 {
5247 /* If this is a plain branch rather than a branch
5248 and link, don't require a nop. */
5249 insn = bfd_get_32 (input_bfd, contents + offset);
5250 if ((insn & 1) == 0)
5251 can_plt_call = 1;
5252 }
5253
5254 if (can_plt_call)
5255 {
5256 relocation = (stub_entry->stub_offset
5257 + stub_entry->stub_sec->output_offset
5258 + stub_entry->stub_sec->output_section->vma);
5259 addend = 0;
5260 unresolved_reloc = false;
5261 }
5bd4f169 5262 }
e86ce104
AM		 5263
5264 if (h != NULL
5265 && h->root.type == bfd_link_hash_undefweak
721956f4
AM		 5266 && relocation == 0
5267 && addend == 0)
e86ce104 5268 {
721956f4
AM		 5269 /* Tweak calls to undefined weak functions to point at a
5270 blr. We can thus call a weak function without first
5271 checking whether the function is defined. We have a
5272 blr at the end of .sfpr. */
805fc799 5273 BFD_ASSERT (htab->sfpr->_raw_size != 0);
721956f4
AM		 5274 relocation = (htab->sfpr->_raw_size - 4
5275 + htab->sfpr->output_offset
5276 + htab->sfpr->output_section->vma);
5277 from = (offset
5278 + input_section->output_offset
5279 + input_section->output_section->vma);
805fc799 5280
721956f4
AM		 5281 /* But let's not be silly about it. If the blr isn't in
5282 reach, just go to the next instruction. */
805fc799
AM		 5283 if (relocation - from + (1 << 25) >= (1 << 26)
5284 || htab->sfpr->_raw_size == 0)
721956f4 5285 relocation = from + 4;
e86ce104 5286 }
65f38f15
AM		 5287 break;
5288 }
5bd4f169 5289
65f38f15
AM		 5290 /* Set `addend'. */
5291 switch (r_type)
5292 {
5293 default:
5294 (*_bfd_error_handler)
5295 (_("%s: unknown relocation type %d for symbol %s"),
5296 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 5297
65f38f15
AM		 5298 bfd_set_error (bfd_error_bad_value);
5299 ret = false;
5300 continue;
5bd4f169 5301
65f38f15
AM		 5302 case R_PPC64_NONE:
5303 case R_PPC_GNU_VTINHERIT:
5304 case R_PPC_GNU_VTENTRY:
5305 continue;
5bd4f169
AM		 5306
5307 /* GOT16 relocations. Like an ADDR16 using the symbol's
5308 address in the GOT as relocation value instead of the
5309 symbols value itself. Also, create a GOT entry for the
5310 symbol and put the symbol value there. */
65f38f15
AM		 5311 case R_PPC64_GOT16:
5312 case R_PPC64_GOT16_LO:
5313 case R_PPC64_GOT16_HI:
5314 case R_PPC64_GOT16_HA:
5315 case R_PPC64_GOT16_DS:
5316 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 5317 {
5318 /* Relocation is to the entry for this symbol in the global
5319 offset table. */
5320 bfd_vma off;
65f38f15
AM		 5321
5322 if (htab->sgot == NULL)
5323 abort ();
5bd4f169
AM		 5324
5325 if (h != NULL)
5326 {
65f38f15 5327 boolean dyn;
5bd4f169 5328
65f38f15
AM		 5329 off = h->got.offset;
5330 dyn = htab->elf.dynamic_sections_created;
5331 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 5332 || (info->shared
65f38f15
AM		 5333 && (info->symbolic
5334 || h->dynindx == -1
5335 || (h->elf_link_hash_flags
5336 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 5337 && (h->elf_link_hash_flags
5338 & ELF_LINK_HASH_DEF_REGULAR)))
5339 {
5340 /* This is actually a static link, or it is a
5341 -Bsymbolic link and the symbol is defined
65f38f15
AM		 5342 locally, or the symbol was forced to be local
5343 because of a version file. We must initialize
5344 this entry in the global offset table. Since the
5345 offset must always be a multiple of 8, we use the
5346 least significant bit to record whether we have
5bd4f169
AM		 5347 initialized it already.
5348
65f38f15 5349 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 5350 relocation entry to initialize the value. This
5351 is done in the finish_dynamic_symbol routine. */
5352 if ((off & 1) != 0)
5353 off &= ~1;
5354 else
5355 {
5356 bfd_put_64 (output_bfd, relocation,
65f38f15 5357 htab->sgot->contents + off);
5bd4f169
AM		 5358 h->got.offset |= 1;
5359 }
5360 }
65f38f15
AM		 5361 else
5362 unresolved_reloc = false;
5bd4f169
AM		 5363 }
5364 else
5365 {
65f38f15
AM		 5366 if (local_got_offsets == NULL)
5367 abort ();
5bd4f169
AM		 5368
5369 off = local_got_offsets[r_symndx];
5370
65f38f15 5371 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 5372 the least significant bit to record whether we have
5373 already processed this entry. */
5374 if ((off & 1) != 0)
5375 off &= ~1;
5376 else
5377 {
65f38f15
AM		 5378 bfd_put_64 (output_bfd, relocation,
5379 htab->sgot->contents + off);
5bd4f169
AM		 5380
5381 if (info->shared)
5382 {
5bd4f169 5383 Elf_Internal_Rela outrel;
65f38f15 5384 Elf64_External_Rela *loc;
5bd4f169
AM		 5385
5386 /* We need to generate a R_PPC64_RELATIVE reloc
5387 for the dynamic linker. */
65f38f15
AM		 5388 outrel.r_offset = (htab->sgot->output_section->vma
5389 + htab->sgot->output_offset
5bd4f169
AM		 5390 + off);
5391 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5392 outrel.r_addend = relocation;
65f38f15
AM		 5393 loc = (Elf64_External_Rela *) htab->srelgot->contents;
5394 loc += htab->srelgot->reloc_count++;
5395 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 5396 }
5397
5398 local_got_offsets[r_symndx] |= 1;
5399 }
5400 }
5401
65f38f15
AM		 5402 if (off >= (bfd_vma) -2)
5403 abort ();
5404
5405 relocation = htab->sgot->output_offset + off;
5406
5bd4f169
AM		 5407 /* TOC base (r2) is TOC start plus 0x8000. */
5408 addend -= TOC_BASE_OFF;
5bd4f169 5409 }
65f38f15
AM		 5410 break;
5411
5412 case R_PPC64_PLT16_HA:
5413 case R_PPC64_PLT16_HI:
5414 case R_PPC64_PLT16_LO:
5415 case R_PPC64_PLT32:
5416 case R_PPC64_PLT64:
5417 /* Relocation is to the entry for this symbol in the
5418 procedure linkage table. */
5419
5420 /* Resolve a PLT reloc against a local symbol directly,
5421 without using the procedure linkage table. */
5422 if (h == NULL)
5423 break;
5424
5425 if (h->plt.offset == (bfd_vma) -1
5426 || htab->splt == NULL)
5427 {
5428 /* We didn't make a PLT entry for this symbol. This
5429 happens when statically linking PIC code, or when
5430 using -Bsymbolic. */
5431 break;
5432 }
5433
5434 relocation = (htab->splt->output_section->vma
5435 + htab->splt->output_offset
5436 + h->plt.offset);
5437 unresolved_reloc = false;
5438 break;
5bd4f169
AM		 5439
5440 /* TOC16 relocs. We want the offset relative to the TOC base,
5441 which is the address of the start of the TOC plus 0x8000.
5442 The TOC consists of sections .got, .toc, .tocbss, and .plt,
5443 in this order. */
65f38f15
AM		 5444 case R_PPC64_TOC16:
5445 case R_PPC64_TOC16_LO:
5446 case R_PPC64_TOC16_HI:
5447 case R_PPC64_TOC16_DS:
5448 case R_PPC64_TOC16_LO_DS:
5449 case R_PPC64_TOC16_HA:
5bd4f169 5450 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 5451 break;
5452
5453 /* Relocate against the beginning of the section. */
65f38f15
AM		 5454 case R_PPC64_SECTOFF:
5455 case R_PPC64_SECTOFF_LO:
5456 case R_PPC64_SECTOFF_HI:
5457 case R_PPC64_SECTOFF_DS:
5458 case R_PPC64_SECTOFF_LO_DS:
5459 case R_PPC64_SECTOFF_HA:
5460 if (sec != (asection *) 0)
5461 addend -= sec->output_section->vma;
5bd4f169
AM		 5462 break;
5463
721956f4
AM		 5464 case R_PPC64_REL14:
5465 case R_PPC64_REL14_BRNTAKEN:
5466 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 5467 case R_PPC64_REL24:
5468 break;
5469
65f38f15
AM		 5470 /* Relocations that may need to be propagated if this is a
5471 dynamic object. */
65f38f15
AM		 5472 case R_PPC64_REL32:
5473 case R_PPC64_REL64:
5474 case R_PPC64_ADDR14:
5475 case R_PPC64_ADDR14_BRNTAKEN:
5476 case R_PPC64_ADDR14_BRTAKEN:
5477 case R_PPC64_ADDR16:
5478 case R_PPC64_ADDR16_DS:
5479 case R_PPC64_ADDR16_HA:
5480 case R_PPC64_ADDR16_HI:
5481 case R_PPC64_ADDR16_HIGHER:
5482 case R_PPC64_ADDR16_HIGHERA:
5483 case R_PPC64_ADDR16_HIGHEST:
5484 case R_PPC64_ADDR16_HIGHESTA:
5485 case R_PPC64_ADDR16_LO:
5486 case R_PPC64_ADDR16_LO_DS:
5487 case R_PPC64_ADDR24:
5488 case R_PPC64_ADDR30:
5489 case R_PPC64_ADDR32:
5490 case R_PPC64_ADDR64:
5491 case R_PPC64_UADDR16:
5492 case R_PPC64_UADDR32:
5493 case R_PPC64_UADDR64:
ec338859
AM		 5494 /* r_symndx will be zero only for relocs against symbols
5495 from removed linkonce sections, or sections discarded by
5496 a linker script. */
5d1634d7
AM		 5497 if (r_symndx == 0)
5498 break;
5499 /* Fall thru. */
5500
5501 case R_PPC64_TOC:
5502 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 5503 break;
5504
41bd81ab
AM		 5505 if (NO_OPD_RELOCS && is_opd)
5506 break;
5507
65f38f15 5508 if ((info->shared
65f38f15
AM		 5509 && (IS_ABSOLUTE_RELOC (r_type)
5510 || (h != NULL
5511 && h->dynindx != -1
5512 && (! info->symbolic
5513 || (h->elf_link_hash_flags
5514 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
5515 || (!info->shared
65f38f15
AM		 5516 && h != NULL
5517 && h->dynindx != -1
5518 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5519 && (((h->elf_link_hash_flags
5520 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5521 && (h->elf_link_hash_flags
5522 & ELF_LINK_HASH_DEF_REGULAR) == 0)
5523 || h->root.type == bfd_link_hash_undefweak
5524 || h->root.type == bfd_link_hash_undefined)))
5525 {
5526 Elf_Internal_Rela outrel;
5527 boolean skip, relocate;
5528 asection *sreloc;
5529 Elf64_External_Rela *loc;
5530
5531 /* When generating a dynamic object, these relocations
5532 are copied into the output file to be resolved at run
5533 time. */
5534
5535 skip = false;
0bb2d96a 5536 relocate = false;
65f38f15 5537
c629eae0
JJ		 5538 outrel.r_offset =
5539 _bfd_elf_section_offset (output_bfd, info, input_section,
5540 rel->r_offset);
5541 if (outrel.r_offset == (bfd_vma) -1)
5542 skip = true;
0bb2d96a
JJ		 5543 else if (outrel.r_offset == (bfd_vma) -2)
5544 skip = true, relocate = true;
65f38f15
AM		 5545 outrel.r_offset += (input_section->output_section->vma
5546 + input_section->output_offset);
5547 outrel.r_addend = addend;
5548
5549 if (skip)
0bb2d96a 5550 memset (&outrel, 0, sizeof outrel);
65f38f15
AM		 5551 else if (h != NULL
5552 && h->dynindx != -1
41bd81ab 5553 && !is_opd
65f38f15
AM		 5554 && (!IS_ABSOLUTE_RELOC (r_type)
5555 || !info->shared
5556 || !info->symbolic
5557 || (h->elf_link_hash_flags
5558 & ELF_LINK_HASH_DEF_REGULAR) == 0))
0bb2d96a 5559 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
65f38f15
AM		 5560 else
5561 {
41bd81ab
AM		 5562 /* This symbol is local, or marked to become local,
5563 or this is an opd section reloc which must point
5564 at a local function. */
65f38f15
AM		 5565 outrel.r_addend += relocation;
5566 relocate = true;
e86ce104 5567 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15
AM		 5568 {
5569 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5570 }
5571 else
5572 {
5573 long indx = 0;
5574
41bd81ab 5575 if (bfd_is_abs_section (sec))
65f38f15
AM		 5576 ;
5577 else if (sec == NULL || sec->owner == NULL)
5578 {
5579 bfd_set_error (bfd_error_bad_value);
5580 return false;
5581 }
5582 else
5583 {
5584 asection *osec;
5585
5586 osec = sec->output_section;
5587 indx = elf_section_data (osec)->dynindx;
5588
5589 /* We are turning this relocation into one
5590 against a section symbol, so subtract out
5591 the output section's address but not the
5592 offset of the input section in the output
5593 section. */
5594 outrel.r_addend -= osec->vma;
5595 }
5596
5597 outrel.r_info = ELF64_R_INFO (indx, r_type);
5598 }
5599 }
5600
5601 sreloc = elf_section_data (input_section)->sreloc;
5602 if (sreloc == NULL)
5603 abort ();
5604
5605 loc = (Elf64_External_Rela *) sreloc->contents;
5606 loc += sreloc->reloc_count++;
5607 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5608
5609 /* If this reloc is against an external symbol, it will
5610 be computed at runtime, so there's no need to do
5611 anything now. */
5612 if (! relocate)
5613 continue;
5614 }
5bd4f169
AM		 5615 break;
5616
65f38f15
AM		 5617 case R_PPC64_COPY:
5618 case R_PPC64_GLOB_DAT:
5619 case R_PPC64_JMP_SLOT:
5620 case R_PPC64_RELATIVE:
5621 /* We shouldn't ever see these dynamic relocs in relocatable
5622 files. */
5623 /* Fall thru */
5624
5625 case R_PPC64_PLTGOT16:
5626 case R_PPC64_PLTGOT16_DS:
5627 case R_PPC64_PLTGOT16_HA:
5628 case R_PPC64_PLTGOT16_HI:
5629 case R_PPC64_PLTGOT16_LO:
5630 case R_PPC64_PLTGOT16_LO_DS:
5631 case R_PPC64_PLTREL32:
5632 case R_PPC64_PLTREL64:
5633 /* These ones haven't been implemented yet. */
5634
5635 (*_bfd_error_handler)
5636 (_("%s: Relocation %s is not supported for symbol %s."),
5637 bfd_archive_filename (input_bfd),
5638 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 5639
5640 bfd_set_error (bfd_error_invalid_operation);
5641 ret = false;
5642 continue;
65f38f15 5643 }
5bd4f169 5644
65f38f15
AM		 5645 /* Do any further special processing. */
5646 switch (r_type)
5647 {
5648 default:
5649 break;
5650
5651 case R_PPC64_ADDR16_HA:
5652 case R_PPC64_ADDR16_HIGHERA:
5653 case R_PPC64_ADDR16_HIGHESTA:
5654 case R_PPC64_PLT16_HA:
5655 case R_PPC64_TOC16_HA:
5656 case R_PPC64_SECTOFF_HA:
5657 /* It's just possible that this symbol is a weak symbol
5658 that's not actually defined anywhere. In that case,
5659 'sec' would be NULL, and we should leave the symbol
5660 alone (it will be set to zero elsewhere in the link). */
5661 if (sec != NULL)
5662 /* Add 0x10000 if sign bit in 0:15 is set. */
5663 addend += ((relocation + addend) & 0x8000) << 1;
5664 break;
5665
5666 case R_PPC64_ADDR16_DS:
5667 case R_PPC64_ADDR16_LO_DS:
5668 case R_PPC64_GOT16_DS:
5669 case R_PPC64_GOT16_LO_DS:
5670 case R_PPC64_PLT16_LO_DS:
5671 case R_PPC64_SECTOFF_DS:
5672 case R_PPC64_SECTOFF_LO_DS:
5673 case R_PPC64_TOC16_DS:
5674 case R_PPC64_TOC16_LO_DS:
5675 case R_PPC64_PLTGOT16_DS:
5676 case R_PPC64_PLTGOT16_LO_DS:
5677 if (((relocation + addend) & 3) != 0)
5678 {
5679 (*_bfd_error_handler)
5680 (_("%s: error: relocation %s not a multiple of 4"),
5681 bfd_archive_filename (input_bfd),
5682 ppc64_elf_howto_table[(int) r_type]->name);
5683 bfd_set_error (bfd_error_bad_value);
5684 ret = false;
5685 continue;
5686 }
5687 break;
721956f4
AM		 5688
5689 case R_PPC64_REL14:
5690 case R_PPC64_REL14_BRNTAKEN:
5691 case R_PPC64_REL14_BRTAKEN:
5692 max_br_offset = 1 << 15;
5693 goto branch_check;
5694
5695 case R_PPC64_REL24:
5696 max_br_offset = 1 << 25;
5697
5698 branch_check:
5699 /* If the branch is out of reach, then redirect the
5700 call to the local stub for this function. */
5701 from = (offset
5702 + input_section->output_offset
5703 + input_section->output_section->vma);
5704 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
5705 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
5706 rel, htab)) != NULL)
5707 {
5708 /* Munge up the value and addend so that we call the stub
5709 rather than the procedure directly. */
5710 relocation = (stub_entry->stub_offset
5711 + stub_entry->stub_sec->output_offset
5712 + stub_entry->stub_sec->output_section->vma);
5713 addend = 0;
5714 }
5715 break;
5bd4f169
AM		 5716 }
5717
65f38f15
AM		 5718 /* FIXME: Why do we allow debugging sections to escape this error?
5719 More importantly, why do we not emit dynamic relocs above in
5720 debugging sections (which are ! SEC_ALLOC)? If we had
5721 emitted the dynamic reloc, we could remove the fudge here. */
5722 if (unresolved_reloc
5723 && !(info->shared
5724 && (input_section->flags & SEC_DEBUGGING) != 0
5725 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
5726 (*_bfd_error_handler)
5727 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
5728 bfd_archive_filename (input_bfd),
5729 bfd_get_section_name (input_bfd, input_section),
5730 (long) rel->r_offset,
5731 h->root.root.string);
5bd4f169 5732
65f38f15 5733 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 5734 input_bfd,
5735 input_section,
5736 contents,
5737 offset,
5738 relocation,
5739 addend);
5740
5741 if (r == bfd_reloc_ok)
5742 ;
5743 else if (r == bfd_reloc_overflow)
5744 {
5745 const char *name;
5746
5747 if (h != NULL)
5748 {
5749 if (h->root.type == bfd_link_hash_undefweak
65f38f15 5750 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 5751 {
5752 /* Assume this is a call protected by other code that
5753 detects the symbol is undefined. If this is the case,
5754 we can safely ignore the overflow. If not, the
5755 program is hosed anyway, and a little warning isn't
5756 going to help. */
5757
5758 continue;
5759 }
5760
5761 name = h->root.root.string;
5762 }
5763 else
5764 {
5765 name = bfd_elf_string_from_elf_section (input_bfd,
5766 symtab_hdr->sh_link,
5767 sym->st_name);
5768 if (name == NULL)
5769 continue;
5770 if (*name == '\0')
5771 name = bfd_section_name (input_bfd, sec);
5772 }
5773
65f38f15
AM		 5774 if (! ((*info->callbacks->reloc_overflow)
5775 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
5776 (bfd_vma) 0, input_bfd, input_section, offset)))
5bd4f169
AM		 5777 return false;
5778 }
5779 else
5780 ret = false;
5781 }
5782
5bd4f169
AM		 5783 return ret;
5784}
5785
5786/* Finish up dynamic symbol handling. We set the contents of various
5787 dynamic sections here. */
5788
5789static boolean
5790ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
5791 bfd *output_bfd;
5792 struct bfd_link_info *info;
5793 struct elf_link_hash_entry *h;
5794 Elf_Internal_Sym *sym;
5795{
65f38f15 5796 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5797 bfd *dynobj;
5798
65f38f15
AM		 5799 htab = ppc_hash_table (info);
5800 dynobj = htab->elf.dynobj;
5bd4f169 5801
41bd81ab
AM		 5802 if (h->plt.offset != (bfd_vma) -1
5803 && ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
5bd4f169 5804 {
65f38f15
AM		 5805 Elf_Internal_Rela rela;
5806 Elf64_External_Rela *loc;
5bd4f169
AM		 5807
5808 /* This symbol has an entry in the procedure linkage table. Set
5809 it up. */
5810
5d1634d7 5811 if (htab->splt == NULL
65f38f15 5812 || htab->srelplt == NULL
e86ce104 5813 || htab->sglink == NULL)
65f38f15
AM		 5814 abort ();
5815
65f38f15
AM		 5816 /* Create a JMP_SLOT reloc to inform the dynamic linker to
5817 fill in the PLT entry. */
5bd4f169 5818
65f38f15
AM		 5819 rela.r_offset = (htab->splt->output_section->vma
5820 + htab->splt->output_offset
5821 + h->plt.offset);
e86ce104 5822 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
65f38f15
AM		 5823 rela.r_addend = 0;
5824
5825 loc = (Elf64_External_Rela *) htab->srelplt->contents;
5826 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
5827 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 5828 }
5829
5830 if (h->got.offset != (bfd_vma) -1)
5831 {
5bd4f169 5832 Elf_Internal_Rela rela;
65f38f15 5833 Elf64_External_Rela *loc;
5bd4f169
AM		 5834
5835 /* This symbol has an entry in the global offset table. Set it
5836 up. */
5837
65f38f15
AM		 5838 if (htab->sgot == NULL || htab->srelgot == NULL)
5839 abort ();
5bd4f169 5840
65f38f15
AM		 5841 rela.r_offset = (htab->sgot->output_section->vma
5842 + htab->sgot->output_offset
dc810e39 5843 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 5844
65f38f15
AM		 5845 /* If this is a static link, or it is a -Bsymbolic link and the
5846 symbol is defined locally or was forced to be local because
5847 of a version file, we just want to emit a RELATIVE reloc.
5848 The entry in the global offset table will already have been
5849 initialized in the relocate_section function. */
5bd4f169 5850 if (info->shared
65f38f15
AM		 5851 && (info->symbolic
5852 || h->dynindx == -1
5853 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 5854 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
5855 {
65f38f15 5856 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 5857 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5858 rela.r_addend = (h->root.u.def.value
5859 + h->root.u.def.section->output_section->vma
5860 + h->root.u.def.section->output_offset);
5861 }
5862 else
5863 {
5864 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 5865 bfd_put_64 (output_bfd, (bfd_vma) 0,
5866 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 5867 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
5868 rela.r_addend = 0;
5869 }
5870
65f38f15
AM		 5871 loc = (Elf64_External_Rela *) htab->srelgot->contents;
5872 loc += htab->srelgot->reloc_count++;
5873 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 5874 }
5875
5876 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
5877 {
5bd4f169 5878 Elf_Internal_Rela rela;
65f38f15 5879 Elf64_External_Rela *loc;
5bd4f169 5880
65f38f15 5881 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 5882
65f38f15
AM		 5883 if (h->dynindx == -1
5884 || (h->root.type != bfd_link_hash_defined
5885 && h->root.type != bfd_link_hash_defweak)
5886 || htab->srelbss == NULL)
5887 abort ();
5bd4f169
AM		 5888
5889 rela.r_offset = (h->root.u.def.value
5890 + h->root.u.def.section->output_section->vma
5891 + h->root.u.def.section->output_offset);
5892 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
5893 rela.r_addend = 0;
65f38f15
AM		 5894 loc = (Elf64_External_Rela *) htab->srelbss->contents;
5895 loc += htab->srelbss->reloc_count++;
5896 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 5897 }
5898
5bd4f169
AM		 5899 /* Mark some specially defined symbols as absolute. */
5900 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
5901 sym->st_shndx = SHN_ABS;
5902
5903 return true;
5904}
5905
65f38f15
AM		 5906/* Used to decide how to sort relocs in an optimal manner for the
5907 dynamic linker, before writing them out. */
5908
5909static enum elf_reloc_type_class
5910ppc64_elf_reloc_type_class (rela)
5911 const Elf_Internal_Rela *rela;
5912{
a33d1f77
AM		 5913 enum elf_ppc_reloc_type r_type;
5914
5915 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
5916 switch (r_type)
65f38f15
AM		 5917 {
5918 case R_PPC64_RELATIVE:
5919 return reloc_class_relative;
5920 case R_PPC64_JMP_SLOT:
5921 return reloc_class_plt;
5922 case R_PPC64_COPY:
5923 return reloc_class_copy;
5924 default:
5925 return reloc_class_normal;
5926 }
5927}
5928
5bd4f169
AM		 5929/* Finish up the dynamic sections. */
5930
5931static boolean
5932ppc64_elf_finish_dynamic_sections (output_bfd, info)
5933 bfd *output_bfd;
5934 struct bfd_link_info *info;
5935{
65f38f15
AM		 5936 struct ppc_link_hash_table *htab;
5937 bfd *dynobj;
5bd4f169 5938 asection *sdyn;
5bd4f169 5939
65f38f15
AM		 5940 htab = ppc_hash_table (info);
5941 dynobj = htab->elf.dynobj;
5bd4f169
AM		 5942 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5943
65f38f15 5944 if (htab->elf.dynamic_sections_created)
5bd4f169 5945 {
5bd4f169
AM		 5946 Elf64_External_Dyn *dyncon, *dynconend;
5947
65f38f15
AM		 5948 if (sdyn == NULL || htab->sgot == NULL)
5949 abort ();
5bd4f169
AM		 5950
5951 dyncon = (Elf64_External_Dyn *) sdyn->contents;
5952 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
5953 for (; dyncon < dynconend; dyncon++)
5954 {
5955 Elf_Internal_Dyn dyn;
19397422 5956 asection *s;
5bd4f169
AM		 5957
5958 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
5959
5960 switch (dyn.d_tag)
5961 {
65f38f15
AM		 5962 default:
5963 continue;
5bd4f169 5964
5d1634d7
AM		 5965 case DT_PPC64_GLINK:
5966 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
5967 + htab->sglink->output_offset);
5968 break;
5969
19397422
AM		 5970 case DT_PPC64_OPD:
5971 s = bfd_get_section_by_name (output_bfd, ".opd");
5972 if (s != NULL)
5973 dyn.d_un.d_ptr = s->vma;
5974 break;
5975
5976 case DT_PPC64_OPDSZ:
5977 s = bfd_get_section_by_name (output_bfd, ".opd");
5978 if (s != NULL)
5979 dyn.d_un.d_val = s->_raw_size;
5980 break;
5981
65f38f15 5982 case DT_PLTGOT:
5d1634d7
AM		 5983 dyn.d_un.d_ptr = (htab->splt->output_section->vma
5984 + htab->splt->output_offset);
65f38f15
AM		 5985 break;
5986
5987 case DT_JMPREL:
5d1634d7
AM		 5988 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
5989 + htab->srelplt->output_offset);
65f38f15 5990 break;
5bd4f169 5991
65f38f15 5992 case DT_PLTRELSZ:
5d1634d7
AM		 5993 dyn.d_un.d_val = htab->srelplt->_raw_size;
5994 break;
5995
5996 case DT_RELASZ:
5997 /* Don't count procedure linkage table relocs in the
5998 overall reloc count. */
5999 if (htab->srelplt != NULL)
6000 dyn.d_un.d_val -= htab->srelplt->_raw_size;
65f38f15 6001 break;
5bd4f169 6002 }
5bd4f169 6003
65f38f15 6004 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 6005 }
5bd4f169
AM		 6006 }
6007
5d1634d7
AM		 6008 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
6009 {
6010 /* Fill in the first entry in the global offset table.
6011 We use it to hold the link-time TOCbase. */
6012 bfd_put_64 (output_bfd,
60ee0d4a 6013 elf_gp (output_bfd) + TOC_BASE_OFF,
5d1634d7
AM		 6014 htab->sgot->contents);
6015
6016 /* Set .got entry size. */
6017 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
6018 }
6019
6020 if (htab->splt != NULL && htab->splt->_raw_size != 0)
6021 {
6022 /* Set .plt entry size. */
6023 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
6024 = PLT_ENTRY_SIZE;
6025 }
6026
5bd4f169
AM		 6027 return true;
6028}
6029
6030#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
6031#define TARGET_LITTLE_NAME "elf64-powerpcle"
6032#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
6033#define TARGET_BIG_NAME "elf64-powerpc"
6034#define ELF_ARCH bfd_arch_powerpc
6035#define ELF_MACHINE_CODE EM_PPC64
6036#define ELF_MAXPAGESIZE 0x10000
6037#define elf_info_to_howto ppc64_elf_info_to_howto
6038
6039#ifdef EM_CYGNUS_POWERPC
6040#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6041#endif
6042
6043#ifdef EM_PPC_OLD
6044#define ELF_MACHINE_ALT2 EM_PPC_OLD
6045#endif
6046
6047#define elf_backend_want_got_sym 0
6048#define elf_backend_want_plt_sym 0
6049#define elf_backend_plt_alignment 3
6050#define elf_backend_plt_not_loaded 1
6051#define elf_backend_got_symbol_offset 0
5d1634d7
AM		 6052#define elf_backend_got_header_size 8
6053#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
5bd4f169 6054#define elf_backend_can_gc_sections 1
65f38f15 6055#define elf_backend_can_refcount 1
5bd4f169 6056
65f38f15
AM		 6057#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
6058#define bfd_elf64_bfd_set_private_flags ppc64_elf_set_private_flags
65f38f15
AM		 6059#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
6060#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
721956f4 6061#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
65f38f15
AM		 6062
6063#define elf_backend_section_from_shdr ppc64_elf_section_from_shdr
6064#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
6065#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
6066#define elf_backend_check_relocs ppc64_elf_check_relocs
6067#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
6068#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
6069#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
e86ce104
AM		 6070#define elf_backend_hide_symbol ppc64_elf_hide_symbol
6071#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
65f38f15
AM		 6072#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
6073#define elf_backend_fake_sections ppc64_elf_fake_sections
6074#define elf_backend_relocate_section ppc64_elf_relocate_section
6075#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
6076#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
6077#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 6078
6079#include "elf64-target.h"
GDB Binutils - Deliverables
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