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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 32
5bd4f169
AM		 33static void ppc_howto_init
34 PARAMS ((void));
35static reloc_howto_type *ppc64_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37static void ppc64_elf_info_to_howto
38 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
805fc799
AM		 39static bfd_reloc_status_type ppc64_elf_ha_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41static bfd_reloc_status_type ppc64_elf_brtaken_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43static bfd_reloc_status_type ppc64_elf_sectoff_reloc
44 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
45static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
46 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
47static bfd_reloc_status_type ppc64_elf_toc_reloc
48 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
49static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
50 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
51static bfd_reloc_status_type ppc64_elf_toc64_reloc
52 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
53static bfd_reloc_status_type ppc64_elf_unhandled_reloc
5bd4f169 54 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
feee612b
AM		 55static boolean ppc64_elf_object_p
56 PARAMS ((bfd *));
5bd4f169
AM		 57static boolean ppc64_elf_merge_private_bfd_data
58 PARAMS ((bfd *, bfd *));
5bd4f169
AM		 59
60
5bd4f169
AM		 61/* The name of the dynamic interpreter. This is put in the .interp
62 section. */
63#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
64
65/* The size in bytes of an entry in the procedure linkage table. */
66#define PLT_ENTRY_SIZE 24
67
68/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 69#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM		 70
71/* TOC base pointers offset from start of TOC. */
72#define TOC_BASE_OFF (0x8000)
73
5d1634d7
AM		 74/* .plt call stub instructions. */
75#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
76#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
77#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
78#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
79#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
80 /* ld %r11,xxx+16@l(%r12) */
81#define BCTR 0x4e800420 /* bctr */
82
83/* The normal stub is this size. */
84#define PLT_CALL_STUB_SIZE (7*4)
85
86/* But sometimes the .plt entry crosses a 64k boundary, and we need
87 to adjust the high word with this insn. */
88#define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
5bd4f169 89
5d1634d7
AM		 90/* The .glink fixup call stub is the same as the .plt call stub, but
91 the first instruction restores r2, and the std is omitted. */
92#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
93
94/* Always allow this much space. */
95#define GLINK_CALL_STUB_SIZE (8*4)
96
97/* Pad with this. */
98#define NOP 0x60000000
99
721956f4
AM		 100/* Some other nops. */
101#define CROR_151515 0x4def7b82
102#define CROR_313131 0x4ffffb82
103
cedb70c5 104/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 105#define LI_R0_0 0x38000000 /* li %r0,0 */
106#define B_DOT 0x48000000 /* b . */
107
108/* After that, we need two instructions to load the index, followed by
109 a branch. */
110#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 111#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 112
82bd7b59
AM		 113/* Instructions to save and restore floating point regs. */
114#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
115#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
116#define BLR 0x4e800020 /* blr */
117
41bd81ab
AM		 118/* Since .opd is an array of descriptors and each entry will end up
119 with identical R_PPC64_RELATIVE relocs, there is really no need to
120 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 121 relocate .opd without reloc entries. */
41bd81ab
AM		 122#ifndef NO_OPD_RELOCS
123#define NO_OPD_RELOCS 0
124#endif
5bd4f169 125\f
f5e87a1d
AM		 126#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
127
5bd4f169
AM		 128/* Relocation HOWTO's. */
129static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
130
131static reloc_howto_type ppc64_elf_howto_raw[] = {
132 /* This reloc does nothing. */
133 HOWTO (R_PPC64_NONE, /* type */
134 0, /* rightshift */
f5e87a1d
AM		 135 0, /* size (0 = byte, 1 = short, 2 = long) */
136 8, /* bitsize */
5bd4f169
AM		 137 false, /* pc_relative */
138 0, /* bitpos */
f5e87a1d 139 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 140 bfd_elf_generic_reloc, /* special_function */
141 "R_PPC64_NONE", /* name */
142 false, /* partial_inplace */
d006db6c 143 0, /* src_mask */
5bd4f169
AM		 144 0, /* dst_mask */
145 false), /* pcrel_offset */
146
147 /* A standard 32 bit relocation. */
148 HOWTO (R_PPC64_ADDR32, /* type */
149 0, /* rightshift */
150 2, /* size (0 = byte, 1 = short, 2 = long) */
151 32, /* bitsize */
152 false, /* pc_relative */
153 0, /* bitpos */
154 complain_overflow_bitfield, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_PPC64_ADDR32", /* name */
157 false, /* partial_inplace */
158 0, /* src_mask */
159 0xffffffff, /* dst_mask */
160 false), /* pcrel_offset */
161
162 /* An absolute 26 bit branch; the lower two bits must be zero.
163 FIXME: we don't check that, we just clear them. */
164 HOWTO (R_PPC64_ADDR24, /* type */
165 0, /* rightshift */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
167 26, /* bitsize */
168 false, /* pc_relative */
169 0, /* bitpos */
170 complain_overflow_bitfield, /* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_PPC64_ADDR24", /* name */
173 false, /* partial_inplace */
d006db6c 174 0, /* src_mask */
f5e87a1d 175 0x03fffffc, /* dst_mask */
5bd4f169
AM		 176 false), /* pcrel_offset */
177
178 /* A standard 16 bit relocation. */
179 HOWTO (R_PPC64_ADDR16, /* type */
180 0, /* rightshift */
181 1, /* size (0 = byte, 1 = short, 2 = long) */
182 16, /* bitsize */
183 false, /* pc_relative */
184 0, /* bitpos */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC64_ADDR16", /* name */
188 false, /* partial_inplace */
189 0, /* src_mask */
190 0xffff, /* dst_mask */
191 false), /* pcrel_offset */
192
193 /* A 16 bit relocation without overflow. */
194 HOWTO (R_PPC64_ADDR16_LO, /* type */
195 0, /* rightshift */
196 1, /* size (0 = byte, 1 = short, 2 = long) */
197 16, /* bitsize */
198 false, /* pc_relative */
199 0, /* bitpos */
200 complain_overflow_dont,/* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC64_ADDR16_LO", /* name */
203 false, /* partial_inplace */
204 0, /* src_mask */
205 0xffff, /* dst_mask */
206 false), /* pcrel_offset */
207
208 /* Bits 16-31 of an address. */
209 HOWTO (R_PPC64_ADDR16_HI, /* type */
210 16, /* rightshift */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
212 16, /* bitsize */
213 false, /* pc_relative */
214 0, /* bitpos */
215 complain_overflow_dont, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC64_ADDR16_HI", /* name */
218 false, /* partial_inplace */
219 0, /* src_mask */
220 0xffff, /* dst_mask */
221 false), /* pcrel_offset */
222
223 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
224 bits, treated as a signed number, is negative. */
225 HOWTO (R_PPC64_ADDR16_HA, /* type */
226 16, /* rightshift */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
228 16, /* bitsize */
229 false, /* pc_relative */
230 0, /* bitpos */
231 complain_overflow_dont, /* complain_on_overflow */
805fc799 232 ppc64_elf_ha_reloc, /* special_function */
5bd4f169
AM		 233 "R_PPC64_ADDR16_HA", /* name */
234 false, /* partial_inplace */
235 0, /* src_mask */
236 0xffff, /* dst_mask */
237 false), /* pcrel_offset */
238
239 /* An absolute 16 bit branch; the lower two bits must be zero.
240 FIXME: we don't check that, we just clear them. */
241 HOWTO (R_PPC64_ADDR14, /* type */
242 0, /* rightshift */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
244 16, /* bitsize */
245 false, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_bitfield, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC64_ADDR14", /* name */
250 false, /* partial_inplace */
d006db6c 251 0, /* src_mask */
f5e87a1d 252 0x0000fffc, /* dst_mask */
5bd4f169
AM		 253 false), /* pcrel_offset */
254
255 /* An absolute 16 bit branch, for which bit 10 should be set to
256 indicate that the branch is expected to be taken. The lower two
257 bits must be zero. */
258 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
259 0, /* rightshift */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
261 16, /* bitsize */
262 false, /* pc_relative */
263 0, /* bitpos */
264 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 265 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 266 "R_PPC64_ADDR14_BRTAKEN",/* name */
267 false, /* partial_inplace */
d006db6c 268 0, /* src_mask */
f5e87a1d 269 0x0000fffc, /* dst_mask */
5bd4f169
AM		 270 false), /* pcrel_offset */
271
272 /* An absolute 16 bit branch, for which bit 10 should be set to
273 indicate that the branch is not expected to be taken. The lower
274 two bits must be zero. */
275 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
276 0, /* rightshift */
277 2, /* size (0 = byte, 1 = short, 2 = long) */
278 16, /* bitsize */
279 false, /* pc_relative */
280 0, /* bitpos */
281 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 282 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 283 "R_PPC64_ADDR14_BRNTAKEN",/* name */
284 false, /* partial_inplace */
d006db6c 285 0, /* src_mask */
f5e87a1d 286 0x0000fffc, /* dst_mask */
5bd4f169
AM		 287 false), /* pcrel_offset */
288
289 /* A relative 26 bit branch; the lower two bits must be zero. */
290 HOWTO (R_PPC64_REL24, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 26, /* bitsize */
294 true, /* pc_relative */
295 0, /* bitpos */
296 complain_overflow_signed, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_REL24", /* name */
299 false, /* partial_inplace */
d006db6c 300 0, /* src_mask */
f5e87a1d 301 0x03fffffc, /* dst_mask */
5bd4f169
AM		 302 true), /* pcrel_offset */
303
304 /* A relative 16 bit branch; the lower two bits must be zero. */
305 HOWTO (R_PPC64_REL14, /* type */
306 0, /* rightshift */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
309 true, /* pc_relative */
310 0, /* bitpos */
311 complain_overflow_signed, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_REL14", /* name */
314 false, /* partial_inplace */
d006db6c 315 0, /* src_mask */
f5e87a1d 316 0x0000fffc, /* dst_mask */
5bd4f169
AM		 317 true), /* pcrel_offset */
318
319 /* A relative 16 bit branch. Bit 10 should be set to indicate that
320 the branch is expected to be taken. The lower two bits must be
321 zero. */
322 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
323 0, /* rightshift */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
325 16, /* bitsize */
326 true, /* pc_relative */
327 0, /* bitpos */
328 complain_overflow_signed, /* complain_on_overflow */
805fc799 329 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 330 "R_PPC64_REL14_BRTAKEN", /* name */
331 false, /* partial_inplace */
d006db6c 332 0, /* src_mask */
f5e87a1d 333 0x0000fffc, /* dst_mask */
5bd4f169
AM		 334 true), /* pcrel_offset */
335
336 /* A relative 16 bit branch. Bit 10 should be set to indicate that
337 the branch is not expected to be taken. The lower two bits must
338 be zero. */
339 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
340 0, /* rightshift */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
342 16, /* bitsize */
343 true, /* pc_relative */
344 0, /* bitpos */
345 complain_overflow_signed, /* complain_on_overflow */
805fc799 346 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169
AM		 347 "R_PPC64_REL14_BRNTAKEN",/* name */
348 false, /* partial_inplace */
d006db6c 349 0, /* src_mask */
f5e87a1d 350 0x0000fffc, /* dst_mask */
5bd4f169
AM		 351 true), /* pcrel_offset */
352
353 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
354 symbol. */
355 HOWTO (R_PPC64_GOT16, /* type */
356 0, /* rightshift */
357 1, /* size (0 = byte, 1 = short, 2 = long) */
358 16, /* bitsize */
359 false, /* pc_relative */
360 0, /* bitpos */
361 complain_overflow_signed, /* complain_on_overflow */
805fc799 362 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 363 "R_PPC64_GOT16", /* name */
364 false, /* partial_inplace */
365 0, /* src_mask */
366 0xffff, /* dst_mask */
367 false), /* pcrel_offset */
368
369 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
370 the symbol. */
371 HOWTO (R_PPC64_GOT16_LO, /* type */
372 0, /* rightshift */
373 1, /* size (0 = byte, 1 = short, 2 = long) */
374 16, /* bitsize */
375 false, /* pc_relative */
376 0, /* bitpos */
377 complain_overflow_dont, /* complain_on_overflow */
805fc799 378 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 379 "R_PPC64_GOT16_LO", /* name */
380 false, /* partial_inplace */
381 0, /* src_mask */
382 0xffff, /* dst_mask */
383 false), /* pcrel_offset */
384
385 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
386 the symbol. */
387 HOWTO (R_PPC64_GOT16_HI, /* type */
388 16, /* rightshift */
389 1, /* size (0 = byte, 1 = short, 2 = long) */
390 16, /* bitsize */
391 false, /* pc_relative */
392 0, /* bitpos */
393 complain_overflow_dont,/* complain_on_overflow */
805fc799 394 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 395 "R_PPC64_GOT16_HI", /* name */
396 false, /* partial_inplace */
397 0, /* src_mask */
398 0xffff, /* dst_mask */
399 false), /* pcrel_offset */
400
401 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
402 the symbol. */
403 HOWTO (R_PPC64_GOT16_HA, /* type */
404 16, /* rightshift */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
406 16, /* bitsize */
407 false, /* pc_relative */
408 0, /* bitpos */
409 complain_overflow_dont,/* complain_on_overflow */
805fc799 410 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 411 "R_PPC64_GOT16_HA", /* name */
412 false, /* partial_inplace */
413 0, /* src_mask */
414 0xffff, /* dst_mask */
415 false), /* pcrel_offset */
416
417 /* This is used only by the dynamic linker. The symbol should exist
418 both in the object being run and in some shared library. The
419 dynamic linker copies the data addressed by the symbol from the
420 shared library into the object, because the object being
421 run has to have the data at some particular address. */
422 HOWTO (R_PPC64_COPY, /* type */
423 0, /* rightshift */
f5e87a1d
AM		 424 0, /* this one is variable size */
425 0, /* bitsize */
5bd4f169
AM		 426 false, /* pc_relative */
427 0, /* bitpos */
f5e87a1d
AM		 428 complain_overflow_dont, /* complain_on_overflow */
429 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 430 "R_PPC64_COPY", /* name */
431 false, /* partial_inplace */
432 0, /* src_mask */
433 0, /* dst_mask */
434 false), /* pcrel_offset */
435
436 /* Like R_PPC64_ADDR64, but used when setting global offset table
437 entries. */
438 HOWTO (R_PPC64_GLOB_DAT, /* type */
439 0, /* rightshift */
440 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
441 64, /* bitsize */
442 false, /* pc_relative */
443 0, /* bitpos */
444 complain_overflow_dont, /* complain_on_overflow */
805fc799 445 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 446 "R_PPC64_GLOB_DAT", /* name */
447 false, /* partial_inplace */
448 0, /* src_mask */
f5e87a1d 449 ONES (64), /* dst_mask */
5bd4f169
AM		 450 false), /* pcrel_offset */
451
452 /* Created by the link editor. Marks a procedure linkage table
453 entry for a symbol. */
454 HOWTO (R_PPC64_JMP_SLOT, /* type */
455 0, /* rightshift */
456 0, /* size (0 = byte, 1 = short, 2 = long) */
457 0, /* bitsize */
458 false, /* pc_relative */
459 0, /* bitpos */
460 complain_overflow_dont, /* complain_on_overflow */
805fc799 461 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 462 "R_PPC64_JMP_SLOT", /* name */
463 false, /* partial_inplace */
464 0, /* src_mask */
465 0, /* dst_mask */
466 false), /* pcrel_offset */
467
468 /* Used only by the dynamic linker. When the object is run, this
469 doubleword64 is set to the load address of the object, plus the
470 addend. */
471 HOWTO (R_PPC64_RELATIVE, /* type */
472 0, /* rightshift */
473 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
474 64, /* bitsize */
8fc39d5d 475 false, /* pc_relative */
5bd4f169
AM		 476 0, /* bitpos */
477 complain_overflow_dont, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_PPC64_RELATIVE", /* name */
480 false, /* partial_inplace */
481 0, /* src_mask */
f5e87a1d 482 ONES (64), /* dst_mask */
8fc39d5d 483 false), /* pcrel_offset */
5bd4f169
AM		 484
485 /* Like R_PPC64_ADDR32, but may be unaligned. */
486 HOWTO (R_PPC64_UADDR32, /* type */
487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
490 false, /* pc_relative */
491 0, /* bitpos */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC64_UADDR32", /* name */
495 false, /* partial_inplace */
496 0, /* src_mask */
497 0xffffffff, /* dst_mask */
498 false), /* pcrel_offset */
499
500 /* Like R_PPC64_ADDR16, but may be unaligned. */
501 HOWTO (R_PPC64_UADDR16, /* type */
502 0, /* rightshift */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
504 16, /* bitsize */
505 false, /* pc_relative */
506 0, /* bitpos */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_PPC64_UADDR16", /* name */
510 false, /* partial_inplace */
511 0, /* src_mask */
512 0xffff, /* dst_mask */
513 false), /* pcrel_offset */
514
515 /* 32-bit PC relative. */
516 HOWTO (R_PPC64_REL32, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
520 true, /* pc_relative */
521 0, /* bitpos */
cedb70c5 522 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM		 523 complain_overflow_signed, /* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_PPC64_REL32", /* name */
526 false, /* partial_inplace */
527 0, /* src_mask */
528 0xffffffff, /* dst_mask */
529 true), /* pcrel_offset */
530
10ed1bba 531 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 532 HOWTO (R_PPC64_PLT32, /* type */
533 0, /* rightshift */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
535 32, /* bitsize */
536 false, /* pc_relative */
537 0, /* bitpos */
538 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 539 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 540 "R_PPC64_PLT32", /* name */
541 false, /* partial_inplace */
542 0, /* src_mask */
f5e87a1d 543 0xffffffff, /* dst_mask */
5bd4f169
AM		 544 false), /* pcrel_offset */
545
546 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
547 FIXME: R_PPC64_PLTREL32 not supported. */
548 HOWTO (R_PPC64_PLTREL32, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
552 true, /* pc_relative */
553 0, /* bitpos */
554 complain_overflow_signed, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC64_PLTREL32", /* name */
557 false, /* partial_inplace */
558 0, /* src_mask */
f5e87a1d 559 0xffffffff, /* dst_mask */
5bd4f169
AM		 560 true), /* pcrel_offset */
561
562 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
563 the symbol. */
564 HOWTO (R_PPC64_PLT16_LO, /* type */
565 0, /* rightshift */
566 1, /* size (0 = byte, 1 = short, 2 = long) */
567 16, /* bitsize */
568 false, /* pc_relative */
569 0, /* bitpos */
570 complain_overflow_dont, /* complain_on_overflow */
805fc799 571 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 572 "R_PPC64_PLT16_LO", /* name */
573 false, /* partial_inplace */
574 0, /* src_mask */
575 0xffff, /* dst_mask */
576 false), /* pcrel_offset */
577
578 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
579 the symbol. */
580 HOWTO (R_PPC64_PLT16_HI, /* type */
581 16, /* rightshift */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
583 16, /* bitsize */
584 false, /* pc_relative */
585 0, /* bitpos */
586 complain_overflow_dont, /* complain_on_overflow */
805fc799 587 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 588 "R_PPC64_PLT16_HI", /* name */
589 false, /* partial_inplace */
590 0, /* src_mask */
591 0xffff, /* dst_mask */
592 false), /* pcrel_offset */
593
594 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
595 the symbol. */
596 HOWTO (R_PPC64_PLT16_HA, /* type */
597 16, /* rightshift */
598 1, /* size (0 = byte, 1 = short, 2 = long) */
599 16, /* bitsize */
600 false, /* pc_relative */
601 0, /* bitpos */
602 complain_overflow_dont, /* complain_on_overflow */
805fc799 603 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 604 "R_PPC64_PLT16_HA", /* name */
605 false, /* partial_inplace */
606 0, /* src_mask */
607 0xffff, /* dst_mask */
608 false), /* pcrel_offset */
609
c061c2d8 610 /* 16-bit section relative relocation. */
5bd4f169
AM		 611 HOWTO (R_PPC64_SECTOFF, /* type */
612 0, /* rightshift */
c061c2d8
AM		 613 1, /* size (0 = byte, 1 = short, 2 = long) */
614 16, /* bitsize */
805fc799 615 false, /* pc_relative */
5bd4f169
AM		 616 0, /* bitpos */
617 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 618 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 619 "R_PPC64_SECTOFF", /* name */
620 false, /* partial_inplace */
621 0, /* src_mask */
c061c2d8 622 0xffff, /* dst_mask */
805fc799 623 false), /* pcrel_offset */
5bd4f169 624
c061c2d8 625 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 626 HOWTO (R_PPC64_SECTOFF_LO, /* type */
627 0, /* rightshift */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
629 16, /* bitsize */
630 false, /* pc_relative */
631 0, /* bitpos */
632 complain_overflow_dont, /* complain_on_overflow */
805fc799 633 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 634 "R_PPC64_SECTOFF_LO", /* name */
635 false, /* partial_inplace */
636 0, /* src_mask */
637 0xffff, /* dst_mask */
638 false), /* pcrel_offset */
639
640 /* 16-bit upper half section relative relocation. */
641 HOWTO (R_PPC64_SECTOFF_HI, /* type */
642 16, /* rightshift */
643 1, /* size (0 = byte, 1 = short, 2 = long) */
644 16, /* bitsize */
645 false, /* pc_relative */
646 0, /* bitpos */
647 complain_overflow_dont, /* complain_on_overflow */
805fc799 648 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 649 "R_PPC64_SECTOFF_HI", /* name */
650 false, /* partial_inplace */
651 0, /* src_mask */
652 0xffff, /* dst_mask */
653 false), /* pcrel_offset */
654
655 /* 16-bit upper half adjusted section relative relocation. */
656 HOWTO (R_PPC64_SECTOFF_HA, /* type */
657 16, /* rightshift */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
659 16, /* bitsize */
660 false, /* pc_relative */
661 0, /* bitpos */
662 complain_overflow_dont, /* complain_on_overflow */
805fc799 663 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169
AM		 664 "R_PPC64_SECTOFF_HA", /* name */
665 false, /* partial_inplace */
666 0, /* src_mask */
667 0xffff, /* dst_mask */
668 false), /* pcrel_offset */
669
670 /* Like R_PPC64_REL24 without touching the two least significant
805fc799 671 bits. Should have been named R_PPC64_REL30! */
5bd4f169
AM		 672 HOWTO (R_PPC64_ADDR30, /* type */
673 2, /* rightshift */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
675 30, /* bitsize */
676 true, /* pc_relative */
677 0, /* bitpos */
678 complain_overflow_dont, /* complain_on_overflow */
679 bfd_elf_generic_reloc, /* special_function */
680 "R_PPC64_ADDR30", /* name */
681 false, /* partial_inplace */
d006db6c 682 0, /* src_mask */
5bd4f169
AM		 683 0xfffffffc, /* dst_mask */
684 true), /* pcrel_offset */
685
686 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
687
688 /* A standard 64-bit relocation. */
689 HOWTO (R_PPC64_ADDR64, /* type */
690 0, /* rightshift */
691 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
692 64, /* bitsize */
693 false, /* pc_relative */
694 0, /* bitpos */
695 complain_overflow_dont, /* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_PPC64_ADDR64", /* name */
698 false, /* partial_inplace */
699 0, /* src_mask */
f5e87a1d 700 ONES (64), /* dst_mask */
5bd4f169
AM		 701 false), /* pcrel_offset */
702
703 /* The bits 32-47 of an address. */
704 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
705 32, /* rightshift */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
707 16, /* bitsize */
708 false, /* pc_relative */
709 0, /* bitpos */
710 complain_overflow_dont, /* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_PPC64_ADDR16_HIGHER", /* name */
713 false, /* partial_inplace */
714 0, /* src_mask */
715 0xffff, /* dst_mask */
716 false), /* pcrel_offset */
717
718 /* The bits 32-47 of an address, plus 1 if the contents of the low
719 16 bits, treated as a signed number, is negative. */
720 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
721 32, /* rightshift */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
723 16, /* bitsize */
724 false, /* pc_relative */
725 0, /* bitpos */
726 complain_overflow_dont, /* complain_on_overflow */
805fc799 727 ppc64_elf_ha_reloc, /* special_function */
5bd4f169
AM		 728 "R_PPC64_ADDR16_HIGHERA", /* name */
729 false, /* partial_inplace */
730 0, /* src_mask */
731 0xffff, /* dst_mask */
732 false), /* pcrel_offset */
733
734 /* The bits 48-63 of an address. */
735 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
736 48, /* rightshift */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
738 16, /* bitsize */
739 false, /* pc_relative */
740 0, /* bitpos */
741 complain_overflow_dont, /* complain_on_overflow */
742 bfd_elf_generic_reloc, /* special_function */
743 "R_PPC64_ADDR16_HIGHEST", /* name */
744 false, /* partial_inplace */
745 0, /* src_mask */
746 0xffff, /* dst_mask */
747 false), /* pcrel_offset */
748
749 /* The bits 48-63 of an address, plus 1 if the contents of the low
750 16 bits, treated as a signed number, is negative. */
751 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
752 48, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
755 false, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
805fc799 758 ppc64_elf_ha_reloc, /* special_function */
5bd4f169
AM		 759 "R_PPC64_ADDR16_HIGHESTA", /* name */
760 false, /* partial_inplace */
761 0, /* src_mask */
762 0xffff, /* dst_mask */
763 false), /* pcrel_offset */
764
765 /* Like ADDR64, but may be unaligned. */
766 HOWTO (R_PPC64_UADDR64, /* type */
767 0, /* rightshift */
768 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
769 64, /* bitsize */
770 false, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 bfd_elf_generic_reloc, /* special_function */
774 "R_PPC64_UADDR64", /* name */
775 false, /* partial_inplace */
776 0, /* src_mask */
f5e87a1d 777 ONES (64), /* dst_mask */
5bd4f169
AM		 778 false), /* pcrel_offset */
779
780 /* 64-bit relative relocation. */
781 HOWTO (R_PPC64_REL64, /* type */
782 0, /* rightshift */
783 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
784 64, /* bitsize */
785 true, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_dont, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC64_REL64", /* name */
790 false, /* partial_inplace */
791 0, /* src_mask */
f5e87a1d 792 ONES (64), /* dst_mask */
5bd4f169
AM		 793 true), /* pcrel_offset */
794
cedb70c5 795 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 796 HOWTO (R_PPC64_PLT64, /* type */
797 0, /* rightshift */
798 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
799 64, /* bitsize */
800 false, /* pc_relative */
801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
805fc799 803 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 804 "R_PPC64_PLT64", /* name */
805 false, /* partial_inplace */
806 0, /* src_mask */
f5e87a1d 807 ONES (64), /* dst_mask */
5bd4f169
AM		 808 false), /* pcrel_offset */
809
810 /* 64-bit PC relative relocation to the symbol's procedure linkage
811 table. */
812 /* FIXME: R_PPC64_PLTREL64 not supported. */
813 HOWTO (R_PPC64_PLTREL64, /* type */
814 0, /* rightshift */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
816 64, /* bitsize */
817 true, /* pc_relative */
818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
805fc799 820 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 821 "R_PPC64_PLTREL64", /* name */
822 false, /* partial_inplace */
823 0, /* src_mask */
f5e87a1d 824 ONES (64), /* dst_mask */
5bd4f169
AM		 825 true), /* pcrel_offset */
826
827 /* 16 bit TOC-relative relocation. */
828
829 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
830 HOWTO (R_PPC64_TOC16, /* type */
831 0, /* rightshift */
832 1, /* size (0 = byte, 1 = short, 2 = long) */
833 16, /* bitsize */
834 false, /* pc_relative */
835 0, /* bitpos */
836 complain_overflow_signed, /* complain_on_overflow */
805fc799 837 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 838 "R_PPC64_TOC16", /* name */
839 false, /* partial_inplace */
840 0, /* src_mask */
841 0xffff, /* dst_mask */
842 false), /* pcrel_offset */
843
844 /* 16 bit TOC-relative relocation without overflow. */
845
846 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
847 HOWTO (R_PPC64_TOC16_LO, /* type */
848 0, /* rightshift */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
850 16, /* bitsize */
851 false, /* pc_relative */
852 0, /* bitpos */
853 complain_overflow_dont, /* complain_on_overflow */
805fc799 854 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 855 "R_PPC64_TOC16_LO", /* name */
856 false, /* partial_inplace */
857 0, /* src_mask */
858 0xffff, /* dst_mask */
859 false), /* pcrel_offset */
860
861 /* 16 bit TOC-relative relocation, high 16 bits. */
862
863 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
864 HOWTO (R_PPC64_TOC16_HI, /* type */
865 16, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
868 false, /* pc_relative */
869 0, /* bitpos */
870 complain_overflow_dont, /* complain_on_overflow */
805fc799 871 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 872 "R_PPC64_TOC16_HI", /* name */
873 false, /* partial_inplace */
874 0, /* src_mask */
875 0xffff, /* dst_mask */
876 false), /* pcrel_offset */
877
878 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
879 contents of the low 16 bits, treated as a signed number, is
880 negative. */
881
882 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
883 HOWTO (R_PPC64_TOC16_HA, /* type */
884 16, /* rightshift */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
886 16, /* bitsize */
887 false, /* pc_relative */
888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
805fc799 890 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169
AM		 891 "R_PPC64_TOC16_HA", /* name */
892 false, /* partial_inplace */
893 0, /* src_mask */
894 0xffff, /* dst_mask */
895 false), /* pcrel_offset */
896
897 /* 64-bit relocation; insert value of TOC base (.TOC.). */
898
899 /* R_PPC64_TOC 51 doubleword64 .TOC. */
900 HOWTO (R_PPC64_TOC, /* type */
901 0, /* rightshift */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
903 64, /* bitsize */
904 false, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 907 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169
AM		 908 "R_PPC64_TOC", /* name */
909 false, /* partial_inplace */
910 0, /* src_mask */
f5e87a1d 911 ONES (64), /* dst_mask */
5bd4f169
AM		 912 false), /* pcrel_offset */
913
914 /* Like R_PPC64_GOT16, but also informs the link editor that the
915 value to relocate may (!) refer to a PLT entry which the link
916 editor (a) may replace with the symbol value. If the link editor
917 is unable to fully resolve the symbol, it may (b) create a PLT
918 entry and store the address to the new PLT entry in the GOT.
919 This permits lazy resolution of function symbols at run time.
920 The link editor may also skip all of this and just (c) emit a
921 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
922 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
923 HOWTO (R_PPC64_PLTGOT16, /* type */
924 0, /* rightshift */
925 1, /* size (0 = byte, 1 = short, 2 = long) */
926 16, /* bitsize */
927 false, /* pc_relative */
928 0, /* bitpos */
929 complain_overflow_signed, /* complain_on_overflow */
805fc799 930 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 931 "R_PPC64_PLTGOT16", /* name */
932 false, /* partial_inplace */
933 0, /* src_mask */
934 0xffff, /* dst_mask */
935 false), /* pcrel_offset */
936
937 /* Like R_PPC64_PLTGOT16, but without overflow. */
938 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
939 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
940 0, /* rightshift */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
942 16, /* bitsize */
943 false, /* pc_relative */
944 0, /* bitpos */
945 complain_overflow_dont, /* complain_on_overflow */
805fc799 946 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 947 "R_PPC64_PLTGOT16_LO", /* name */
948 false, /* partial_inplace */
949 0, /* src_mask */
950 0xffff, /* dst_mask */
951 false), /* pcrel_offset */
952
953 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
954 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
955 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 false, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
805fc799 962 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 963 "R_PPC64_PLTGOT16_HI", /* name */
964 false, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 false), /* pcrel_offset */
968
969 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
970 1 if the contents of the low 16 bits, treated as a signed number,
971 is negative. */
972 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
973 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
974 16, /* rightshift */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
976 16, /* bitsize */
977 false, /* pc_relative */
978 0, /* bitpos */
979 complain_overflow_dont,/* complain_on_overflow */
805fc799 980 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 981 "R_PPC64_PLTGOT16_HA", /* name */
982 false, /* partial_inplace */
983 0, /* src_mask */
984 0xffff, /* dst_mask */
985 false), /* pcrel_offset */
986
987 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
988 HOWTO (R_PPC64_ADDR16_DS, /* type */
989 0, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
992 false, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_bitfield, /* complain_on_overflow */
995 bfd_elf_generic_reloc, /* special_function */
996 "R_PPC64_ADDR16_DS", /* name */
997 false, /* partial_inplace */
d006db6c 998 0, /* src_mask */
5bd4f169
AM		 999 0xfffc, /* dst_mask */
1000 false), /* pcrel_offset */
1001
1002 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1003 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1004 0, /* rightshift */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1006 16, /* bitsize */
1007 false, /* pc_relative */
1008 0, /* bitpos */
1009 complain_overflow_dont,/* complain_on_overflow */
1010 bfd_elf_generic_reloc, /* special_function */
1011 "R_PPC64_ADDR16_LO_DS",/* name */
1012 false, /* partial_inplace */
d006db6c 1013 0, /* src_mask */
5bd4f169
AM		 1014 0xfffc, /* dst_mask */
1015 false), /* pcrel_offset */
1016
1017 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1018 HOWTO (R_PPC64_GOT16_DS, /* type */
1019 0, /* rightshift */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 16, /* bitsize */
1022 false, /* pc_relative */
1023 0, /* bitpos */
1024 complain_overflow_signed, /* complain_on_overflow */
805fc799 1025 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1026 "R_PPC64_GOT16_DS", /* name */
1027 false, /* partial_inplace */
d006db6c 1028 0, /* src_mask */
5bd4f169
AM		 1029 0xfffc, /* dst_mask */
1030 false), /* pcrel_offset */
1031
1032 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1033 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1034 0, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 false, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
805fc799 1040 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1041 "R_PPC64_GOT16_LO_DS", /* name */
1042 false, /* partial_inplace */
d006db6c 1043 0, /* src_mask */
5bd4f169
AM		 1044 0xfffc, /* dst_mask */
1045 false), /* pcrel_offset */
1046
1047 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1048 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1049 0, /* rightshift */
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 16, /* bitsize */
1052 false, /* pc_relative */
1053 0, /* bitpos */
1054 complain_overflow_dont, /* complain_on_overflow */
805fc799 1055 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1056 "R_PPC64_PLT16_LO_DS", /* name */
1057 false, /* partial_inplace */
d006db6c 1058 0, /* src_mask */
5bd4f169
AM		 1059 0xfffc, /* dst_mask */
1060 false), /* pcrel_offset */
1061
1062 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
5bd4f169
AM		 1063 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1064 0, /* rightshift */
c061c2d8
AM		 1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
805fc799 1067 false, /* pc_relative */
5bd4f169
AM		 1068 0, /* bitpos */
1069 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 1070 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 1071 "R_PPC64_SECTOFF_DS", /* name */
1072 false, /* partial_inplace */
d006db6c 1073 0, /* src_mask */
c061c2d8 1074 0xfffc, /* dst_mask */
805fc799 1075 false), /* pcrel_offset */
5bd4f169
AM		 1076
1077 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1078 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1079 0, /* rightshift */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 false, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_dont, /* complain_on_overflow */
805fc799 1085 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169
AM		 1086 "R_PPC64_SECTOFF_LO_DS",/* name */
1087 false, /* partial_inplace */
d006db6c 1088 0, /* src_mask */
5bd4f169
AM		 1089 0xfffc, /* dst_mask */
1090 false), /* pcrel_offset */
1091
1092 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1093 HOWTO (R_PPC64_TOC16_DS, /* type */
1094 0, /* rightshift */
1095 1, /* size (0 = byte, 1 = short, 2 = long) */
1096 16, /* bitsize */
1097 false, /* pc_relative */
1098 0, /* bitpos */
1099 complain_overflow_signed, /* complain_on_overflow */
805fc799 1100 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 1101 "R_PPC64_TOC16_DS", /* name */
1102 false, /* partial_inplace */
d006db6c 1103 0, /* src_mask */
5bd4f169
AM		 1104 0xfffc, /* dst_mask */
1105 false), /* pcrel_offset */
1106
1107 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1108 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1109 0, /* rightshift */
1110 1, /* size (0 = byte, 1 = short, 2 = long) */
1111 16, /* bitsize */
1112 false, /* pc_relative */
1113 0, /* bitpos */
1114 complain_overflow_dont, /* complain_on_overflow */
805fc799 1115 ppc64_elf_toc_reloc, /* special_function */
5bd4f169
AM		 1116 "R_PPC64_TOC16_LO_DS", /* name */
1117 false, /* partial_inplace */
d006db6c 1118 0, /* src_mask */
5bd4f169
AM		 1119 0xfffc, /* dst_mask */
1120 false), /* pcrel_offset */
1121
1122 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1123 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1124 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1125 0, /* rightshift */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1127 16, /* bitsize */
1128 false, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_signed, /* complain_on_overflow */
805fc799 1131 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1132 "R_PPC64_PLTGOT16_DS", /* name */
1133 false, /* partial_inplace */
d006db6c 1134 0, /* src_mask */
5bd4f169
AM		 1135 0xfffc, /* dst_mask */
1136 false), /* pcrel_offset */
1137
1138 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1139 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1140 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1141 0, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 false, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
805fc799 1147 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169
AM		 1148 "R_PPC64_PLTGOT16_LO_DS",/* name */
1149 false, /* partial_inplace */
d006db6c 1150 0, /* src_mask */
5bd4f169
AM		 1151 0xfffc, /* dst_mask */
1152 false), /* pcrel_offset */
1153
1154 /* GNU extension to record C++ vtable hierarchy. */
1155 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1156 0, /* rightshift */
1157 0, /* size (0 = byte, 1 = short, 2 = long) */
1158 0, /* bitsize */
1159 false, /* pc_relative */
1160 0, /* bitpos */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 NULL, /* special_function */
1163 "R_PPC64_GNU_VTINHERIT", /* name */
1164 false, /* partial_inplace */
1165 0, /* src_mask */
1166 0, /* dst_mask */
1167 false), /* pcrel_offset */
1168
1169 /* GNU extension to record C++ vtable member usage. */
1170 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1171 0, /* rightshift */
1172 0, /* size (0 = byte, 1 = short, 2 = long) */
1173 0, /* bitsize */
1174 false, /* pc_relative */
1175 0, /* bitpos */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 NULL, /* special_function */
1178 "R_PPC64_GNU_VTENTRY", /* name */
1179 false, /* partial_inplace */
1180 0, /* src_mask */
1181 0, /* dst_mask */
1182 false), /* pcrel_offset */
1183};
1184
1185\f
1186/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1187 be done. */
1188
1189static void
1190ppc_howto_init ()
1191{
1192 unsigned int i, type;
1193
1194 for (i = 0;
1195 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1196 i++)
1197 {
1198 type = ppc64_elf_howto_raw[i].type;
1199 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1200 / sizeof (ppc64_elf_howto_table[0])));
1201 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1202 }
1203}
1204
1205static reloc_howto_type *
1206ppc64_elf_reloc_type_lookup (abfd, code)
1207 bfd *abfd ATTRIBUTE_UNUSED;
1208 bfd_reloc_code_real_type code;
1209{
1210 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1211
1212 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1213 /* Initialize howto table if needed. */
1214 ppc_howto_init ();
1215
1216 switch ((int) code)
1217 {
1218 default:
1219 return (reloc_howto_type *) NULL;
1220
1221 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1222 break;
1223 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1224 break;
1225 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1226 break;
1227 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1228 break;
1229 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1230 break;
1231 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1232 break;
1233 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1234 break;
1235 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1236 break;
1237 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1238 break;
1239 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1240 break;
1241 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1242 break;
1243 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1244 break;
1245 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1246 break;
1247 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1248 break;
1249 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1250 break;
1251 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1252 break;
1253 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1254 break;
1255 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1256 break;
1257 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1258 break;
1259 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1260 break;
1261 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1262 break;
1263 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1264 break;
1265 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1266 break;
1267 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1268 break;
1269 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1270 break;
1271 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1272 break;
c061c2d8 1273 case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
5bd4f169
AM		 1274 break;
1275 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1276 break;
1277 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1278 break;
1279 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1280 break;
10ed1bba 1281 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
5bd4f169
AM		 1282 break;
1283 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1284 break;
1285 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1286 break;
1287 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1288 break;
1289 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1290 break;
1291 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1292 break;
1293 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1294 break;
1295 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1296 break;
1297 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1298 break;
1299 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1300 break;
1301 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1302 break;
1303 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1304 break;
1305 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1306 break;
1307 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1308 break;
1309 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1310 break;
1311 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1312 break;
1313 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1314 break;
1315 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1316 break;
1317 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1318 break;
1319 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1320 break;
1321 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1322 break;
1323 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1324 break;
1325 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1326 break;
1327 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1328 break;
1329 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1330 break;
1331 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1332 break;
1333 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1334 break;
1335 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1336 break;
1337 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1338 break;
1339 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1340 break;
1341 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1342 break;
1343 }
1344
1345 return ppc64_elf_howto_table[(int) ppc_reloc];
1346};
1347
1348/* Set the howto pointer for a PowerPC ELF reloc. */
1349
1350static void
1351ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1352 bfd *abfd ATTRIBUTE_UNUSED;
1353 arelent *cache_ptr;
1354 Elf64_Internal_Rela *dst;
1355{
65f38f15
AM		 1356 unsigned int type;
1357
ef60b7ff 1358 /* Initialize howto table if needed. */
5bd4f169 1359 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 1360 ppc_howto_init ();
1361
65f38f15
AM		 1362 type = ELF64_R_TYPE (dst->r_info);
1363 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1364 / sizeof (ppc64_elf_howto_table[0])));
1365 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 1366}
1367
65f38f15 1368/* Handle the R_PPC_ADDR16_HA and similar relocs. */
5bd4f169
AM		 1369
1370static bfd_reloc_status_type
805fc799
AM		 1371ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data,
1372 input_section, output_bfd, error_message)
1373 bfd *abfd;
5bd4f169
AM		 1374 arelent *reloc_entry;
1375 asymbol *symbol;
805fc799 1376 PTR data;
5bd4f169
AM		 1377 asection *input_section;
1378 bfd *output_bfd;
805fc799 1379 char **error_message;
5bd4f169 1380{
805fc799
AM		 1381 /* If this is a relocatable link (output_bfd test tells us), just
1382 call the generic function. Any adjustment will be done at final
1383 link time. */
1384 if (output_bfd != NULL)
cedb70c5 1385 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1386 input_section, output_bfd, error_message);
1387
1388 /* Adjust the addend for sign extension of the low 16 bits.
1389 We won't actually be using the low 16 bits, so trashing them
1390 doesn't matter. */
1391 reloc_entry->addend += 0x8000;
1392 return bfd_reloc_continue;
1393}
5bd4f169 1394
805fc799
AM		 1395static bfd_reloc_status_type
1396ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data,
1397 input_section, output_bfd, error_message)
1398 bfd *abfd;
1399 arelent *reloc_entry;
1400 asymbol *symbol;
1401 PTR data;
1402 asection *input_section;
1403 bfd *output_bfd;
1404 char **error_message;
1405{
1406 long insn;
1407 enum elf_ppc_reloc_type r_type;
1408 bfd_size_type octets;
1409 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
1410 boolean is_power4 = false;
1411
1412 /* If this is a relocatable link (output_bfd test tells us), just
1413 call the generic function. Any adjustment will be done at final
1414 link time. */
5bd4f169 1415 if (output_bfd != NULL)
cedb70c5 1416 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1417 input_section, output_bfd, error_message);
1418
1419 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
1420 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
1421 insn &= ~(0x01 << 21);
1422 r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type;
1423 if (r_type == R_PPC64_ADDR14_BRTAKEN
1424 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 1425 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM		 1426
1427 if (is_power4)
5bd4f169 1428 {
805fc799
AM		 1429 /* Set 'a' bit. This is 0b00010 in BO field for branch
1430 on CR(BI) insns (BO == 001at or 011at), and 0b01000
1431 for branch on CTR insns (BO == 1a00t or 1a01t). */
1432 if ((insn & (0x14 << 21)) == (0x04 << 21))
1433 insn |= 0x02 << 21;
1434 else if ((insn & (0x14 << 21)) == (0x10 << 21))
1435 insn |= 0x08 << 21;
1436 else
1437 return bfd_reloc_continue;
5bd4f169 1438 }
805fc799
AM		 1439 else
1440 {
1441 bfd_vma target = 0;
1442 bfd_vma from;
5bd4f169 1443
805fc799
AM		 1444 if (!bfd_is_com_section (symbol->section))
1445 target = symbol->value;
1446 target += symbol->section->output_section->vma;
1447 target += symbol->section->output_offset;
1448 target += reloc_entry->addend;
5bd4f169 1449
805fc799
AM		 1450 from = (reloc_entry->address
1451 + input_section->output_offset
1452 + input_section->output_section->vma);
5bd4f169 1453
805fc799
AM		 1454 /* Invert 'y' bit if not the default. */
1455 if ((bfd_signed_vma) (target - from) < 0)
1456 insn ^= 0x01 << 21;
1457 }
1458 bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets);
1459 return bfd_reloc_continue;
1460}
5bd4f169 1461
805fc799
AM		 1462static bfd_reloc_status_type
1463ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data,
1464 input_section, output_bfd, error_message)
1465 bfd *abfd;
1466 arelent *reloc_entry;
1467 asymbol *symbol;
1468 PTR data;
1469 asection *input_section;
1470 bfd *output_bfd;
1471 char **error_message;
1472{
1473 /* If this is a relocatable link (output_bfd test tells us), just
1474 call the generic function. Any adjustment will be done at final
1475 link time. */
1476 if (output_bfd != NULL)
cedb70c5 1477 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 1478 input_section, output_bfd, error_message);
5bd4f169 1479
805fc799
AM		 1480 /* Subtract the symbol section base address. */
1481 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 1482 return bfd_reloc_continue;
1483}
1484
805fc799
AM		 1485static bfd_reloc_status_type
1486ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data,
1487 input_section, output_bfd, error_message)
1488 bfd *abfd;
1489 arelent *reloc_entry;
1490 asymbol *symbol;
1491 PTR data;
1492 asection *input_section;
1493 bfd *output_bfd;
1494 char **error_message;
1495{
1496 /* If this is a relocatable link (output_bfd test tells us), just
1497 call the generic function. Any adjustment will be done at final
1498 link time. */
1499 if (output_bfd != NULL)
cedb70c5 1500 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1501 input_section, output_bfd, error_message);
1502
1503 /* Subtract the symbol section base address. */
1504 reloc_entry->addend -= symbol->section->output_section->vma;
1505
1506 /* Adjust the addend for sign extension of the low 16 bits. */
1507 reloc_entry->addend += 0x8000;
1508 return bfd_reloc_continue;
1509}
1510
1511static bfd_reloc_status_type
1512ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data,
1513 input_section, output_bfd, error_message)
1514 bfd *abfd;
1515 arelent *reloc_entry;
1516 asymbol *symbol;
1517 PTR data;
1518 asection *input_section;
1519 bfd *output_bfd;
1520 char **error_message;
1521{
1522 bfd_vma TOCstart;
1523
1524 /* If this is a relocatable link (output_bfd test tells us), just
1525 call the generic function. Any adjustment will be done at final
1526 link time. */
1527 if (output_bfd != NULL)
cedb70c5 1528 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1529 input_section, output_bfd, error_message);
1530
1531 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1532 if (TOCstart == 0)
1533 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1534
1535 /* Subtract the TOC base address. */
1536 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
1537 return bfd_reloc_continue;
1538}
1539
1540static bfd_reloc_status_type
1541ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data,
1542 input_section, output_bfd, error_message)
1543 bfd *abfd;
1544 arelent *reloc_entry;
1545 asymbol *symbol;
1546 PTR data;
1547 asection *input_section;
1548 bfd *output_bfd;
1549 char **error_message;
1550{
1551 bfd_vma TOCstart;
1552
1553 /* If this is a relocatable link (output_bfd test tells us), just
1554 call the generic function. Any adjustment will be done at final
1555 link time. */
1556 if (output_bfd != NULL)
cedb70c5 1557 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1558 input_section, output_bfd, error_message);
1559
1560 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1561 if (TOCstart == 0)
1562 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1563
1564 /* Subtract the TOC base address. */
1565 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
1566
1567 /* Adjust the addend for sign extension of the low 16 bits. */
1568 reloc_entry->addend += 0x8000;
1569 return bfd_reloc_continue;
1570}
1571
1572static bfd_reloc_status_type
1573ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data,
1574 input_section, output_bfd, error_message)
1575 bfd *abfd;
1576 arelent *reloc_entry;
1577 asymbol *symbol;
1578 PTR data;
1579 asection *input_section;
1580 bfd *output_bfd;
1581 char **error_message;
1582{
1583 bfd_vma TOCstart;
1584 bfd_size_type octets;
1585
1586 /* If this is a relocatable link (output_bfd test tells us), just
1587 call the generic function. Any adjustment will be done at final
1588 link time. */
1589 if (output_bfd != NULL)
cedb70c5 1590 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1591 input_section, output_bfd, error_message);
1592
1593 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1594 if (TOCstart == 0)
1595 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1596
1597 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
1598 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
1599 return bfd_reloc_ok;
1600}
1601
1602static bfd_reloc_status_type
1603ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data,
1604 input_section, output_bfd, error_message)
1605 bfd *abfd;
1606 arelent *reloc_entry;
1607 asymbol *symbol;
1608 PTR data;
1609 asection *input_section;
1610 bfd *output_bfd;
1611 char **error_message;
1612{
1613 /* If this is a relocatable link (output_bfd test tells us), just
1614 call the generic function. Any adjustment will be done at final
1615 link time. */
1616 if (output_bfd != NULL)
cedb70c5 1617 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 1618 input_section, output_bfd, error_message);
1619
1620 if (error_message != NULL)
1621 {
1622 static char buf[60];
1623 sprintf (buf, "generic linker can't handle %s",
1624 reloc_entry->howto->name);
1625 *error_message = buf;
1626 }
1627 return bfd_reloc_dangerous;
1628}
1629
feee612b
AM		 1630/* Fix bad default arch selected for a 64 bit input bfd when the
1631 default is 32 bit. */
1632
1633static boolean
1634ppc64_elf_object_p (abfd)
1635 bfd *abfd;
1636{
1637 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
1638 {
1639 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1640
1641 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
1642 {
1643 /* Relies on arch after 32 bit default being 64 bit default. */
1644 abfd->arch_info = abfd->arch_info->next;
1645 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
1646 }
1647 }
1648 return true;
1649}
1650
5bd4f169
AM		 1651/* Merge backend specific data from an object file to the output
1652 object file when linking. */
2f6d9989 1653
5bd4f169
AM		 1654static boolean
1655ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1656 bfd *ibfd;
1657 bfd *obfd;
1658{
5bd4f169
AM		 1659 /* Check if we have the same endianess. */
1660 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1661 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1662 {
1663 const char *msg;
1664
1665 if (bfd_big_endian (ibfd))
1666 msg = _("%s: compiled for a big endian system and target is little endian");
1667 else
1668 msg = _("%s: compiled for a little endian system and target is big endian");
1669
8f615d07 1670 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
5bd4f169
AM		 1671
1672 bfd_set_error (bfd_error_wrong_format);
1673 return false;
1674 }
1675
5bd4f169
AM		 1676 return true;
1677}
1678\f
65f38f15
AM		 1679/* The following functions are specific to the ELF linker, while
1680 functions above are used generally. Those named ppc64_elf_* are
1681 called by the main ELF linker code. They appear in this file more
1682 or less in the order in which they are called. eg.
1683 ppc64_elf_check_relocs is called early in the link process,
1684 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 1685 called.
1686
1687 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
1688 functions have both a function code symbol and a function descriptor
1689 symbol. A call to foo in a relocatable object file looks like:
1690
1691 . .text
1692 . x:
1693 . bl .foo
1694 . nop
1695
1696 The function definition in another object file might be:
1697
1698 . .section .opd
1699 . foo: .quad .foo
1700 . .quad .TOC.@tocbase
1701 . .quad 0
1702 .
1703 . .text
1704 . .foo: blr
1705
1706 When the linker resolves the call during a static link, the branch
1707 unsurprisingly just goes to .foo and the .opd information is unused.
1708 If the function definition is in a shared library, things are a little
1709 different: The call goes via a plt call stub, the opd information gets
1710 copied to the plt, and the linker patches the nop.
1711
1712 . x:
1713 . bl .foo_stub
1714 . ld 2,40(1)
1715 .
1716 .
1717 . .foo_stub:
1718 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
1719 . addi 12,12,Lfoo@toc@l # is slightly optimised, but
1720 . std 2,40(1) # this is the general idea
1721 . ld 11,0(12)
1722 . ld 2,8(12)
1723 . mtctr 11
1724 . ld 11,16(12)
1725 . bctr
1726 .
1727 . .section .plt
1728 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
1729
1730 The "reloc ()" notation is supposed to indicate that the linker emits
1731 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
1732 copying.
1733
1734 What are the difficulties here? Well, firstly, the relocations
1735 examined by the linker in check_relocs are against the function code
1736 sym .foo, while the dynamic relocation in the plt is emitted against
1737 the function descriptor symbol, foo. Somewhere along the line, we need
1738 to carefully copy dynamic link information from one symbol to the other.
1739 Secondly, the generic part of the elf linker will make .foo a dynamic
1740 symbol as is normal for most other backends. We need foo dynamic
1741 instead, at least for an application final link. However, when
1742 creating a shared library containing foo, we need to have both symbols
1743 dynamic so that references to .foo are satisfied during the early
1744 stages of linking. Otherwise the linker might decide to pull in a
41bd81ab 1745 definition from some other object, eg. a static library. */
65f38f15
AM		 1746
1747/* The linker needs to keep track of the number of relocs that it
1748 decides to copy as dynamic relocs in check_relocs for each symbol.
1749 This is so that it can later discard them if they are found to be
1750 unnecessary. We store the information in a field extending the
1751 regular ELF linker hash table. */
1752
1753struct ppc_dyn_relocs
1754{
1755 struct ppc_dyn_relocs *next;
1756
1757 /* The input section of the reloc. */
1758 asection *sec;
1759
1760 /* Total number of relocs copied for the input section. */
1761 bfd_size_type count;
1762
1763 /* Number of pc-relative relocs copied for the input section. */
1764 bfd_size_type pc_count;
1765};
1766
1767/* Of those relocs that might be copied as dynamic relocs, this macro
1768 selects between relative and absolute types. */
1769
1770#define IS_ABSOLUTE_RELOC(RTYPE) \
805fc799
AM		 1771 ((RTYPE) != R_PPC64_REL32 \
1772 && (RTYPE) != R_PPC64_REL64 \
1773 && (RTYPE) != R_PPC64_ADDR30)
65f38f15 1774
721956f4
AM		 1775/* Section name for stubs is the associated section name plus this
1776 string. */
1777#define STUB_SUFFIX ".stub"
1778
1779/* Linker stubs.
1780 ppc_stub_long_branch:
1781 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
1782 destination, but a 24 bit branch in a stub section will reach.
1783 . b dest
1784
1785 ppc_stub_plt_branch:
1786 Similar to the above, but a 24 bit branch in the stub section won't
1787 reach its destination.
1788 . addis %r12,%r2,xxx@ha
1789 . ld %r11,xxx@l(%r12)
1790 . mtctr %r11
1791 . bctr
1792
1793 ppc_stub_plt_call:
1794 Used to call a function in a shared library.
1795 . addis %r12,%r2,xxx@ha
1796 . std %r2,40(%r1)
1797 . ld %r11,xxx+0@l(%r12)
1798 . ld %r2,xxx+8@l(%r12)
1799 . mtctr %r11
1800 . ld %r11,xxx+16@l(%r12)
1801 . bctr
1802*/
1803
1804enum ppc_stub_type {
1805 ppc_stub_none,
1806 ppc_stub_long_branch,
1807 ppc_stub_plt_branch,
1808 ppc_stub_plt_call
1809};
1810
1811struct ppc_stub_hash_entry {
1812
1813 /* Base hash table entry structure. */
1814 struct bfd_hash_entry root;
1815
1816 /* The stub section. */
1817 asection *stub_sec;
1818
1819 /* Offset within stub_sec of the beginning of this stub. */
1820 bfd_vma stub_offset;
1821
1822 /* Given the symbol's value and its section we can determine its final
1823 value when building the stubs (so the stub knows where to jump. */
1824 bfd_vma target_value;
1825 asection *target_section;
1826
1827 enum ppc_stub_type stub_type;
1828
1829 /* The symbol table entry, if any, that this was derived from. */
1830 struct ppc_link_hash_entry *h;
1831
1832 /* Where this stub is being called from, or, in the case of combined
1833 stub sections, the first input section in the group. */
1834 asection *id_sec;
1835};
1836
1837struct ppc_branch_hash_entry {
1838
1839 /* Base hash table entry structure. */
1840 struct bfd_hash_entry root;
1841
1842 /* Offset within .branch_lt. */
1843 unsigned int offset;
1844
1845 /* Generation marker. */
1846 unsigned int iter;
1847};
65f38f15
AM		 1848
1849struct ppc_link_hash_entry
1850{
1851 struct elf_link_hash_entry elf;
1852
721956f4
AM		 1853 /* A pointer to the most recently used stub hash entry against this
1854 symbol. */
1855 struct ppc_stub_hash_entry *stub_cache;
1856
65f38f15
AM		 1857 /* Track dynamic relocs copied for this symbol. */
1858 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 1859
721956f4
AM		 1860 /* Link between function code and descriptor symbols. */
1861 struct elf_link_hash_entry *oh;
1862
e86ce104
AM		 1863 /* Flag function code and descriptor symbols. */
1864 unsigned int is_func:1;
1865 unsigned int is_func_descriptor:1;
1e2f5b6e 1866 unsigned int is_entry:1;
65f38f15
AM		 1867};
1868
1869/* ppc64 ELF linker hash table. */
1870
1871struct ppc_link_hash_table
1872{
1873 struct elf_link_hash_table elf;
1874
721956f4
AM		 1875 /* The stub hash table. */
1876 struct bfd_hash_table stub_hash_table;
1877
1878 /* Another hash table for plt_branch stubs. */
1879 struct bfd_hash_table branch_hash_table;
1880
1881 /* Linker stub bfd. */
1882 bfd *stub_bfd;
1883
1884 /* Linker call-backs. */
1885 asection * (*add_stub_section) PARAMS ((const char *, asection *));
1886 void (*layout_sections_again) PARAMS ((void));
1887
1888 /* Array to keep track of which stub sections have been created, and
1889 information on stub grouping. */
1890 struct map_stub {
1891 /* This is the section to which stubs in the group will be attached. */
1892 asection *link_sec;
1893 /* The stub section. */
1894 asection *stub_sec;
1895 } *stub_group;
1896
1897 /* Assorted information used by ppc64_elf_size_stubs. */
721956f4
AM		 1898 int top_index;
1899 asection **input_list;
721956f4 1900
65f38f15
AM		 1901 /* Short-cuts to get to dynamic linker sections. */
1902 asection *sgot;
1903 asection *srelgot;
1904 asection *splt;
1905 asection *srelplt;
1906 asection *sdynbss;
1907 asection *srelbss;
1908 asection *sglink;
82bd7b59 1909 asection *sfpr;
721956f4
AM		 1910 asection *sbrlt;
1911 asection *srelbrlt;
ec338859 1912
5d1634d7 1913 /* Set on error. */
721956f4
AM		 1914 unsigned int stub_error;
1915
1916 /* Flag set when small branches are detected. Used to
1917 select suitable defaults for the stub group size. */
1918 unsigned int has_14bit_branch;
1919
805fc799
AM		 1920 /* Set if we detect a reference undefined weak symbol. */
1921 unsigned int have_undefweak;
1922
721956f4
AM		 1923 /* Incremented every time we size stubs. */
1924 unsigned int stub_iteration;
5d1634d7 1925
ec338859
AM		 1926 /* Small local sym to section mapping cache. */
1927 struct sym_sec_cache sym_sec;
65f38f15
AM		 1928};
1929
721956f4
AM		 1930static struct bfd_hash_entry *stub_hash_newfunc
1931 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1932static struct bfd_hash_entry *branch_hash_newfunc
1933 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1934static struct bfd_hash_entry *link_hash_newfunc
1935 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1936static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
1937 PARAMS ((bfd *));
1938static void ppc64_elf_link_hash_table_free
1939 PARAMS ((struct bfd_link_hash_table *));
1940static char *ppc_stub_name
1941 PARAMS ((const asection *, const asection *,
1942 const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
1943static struct ppc_stub_hash_entry *ppc_get_stub_entry
1944 PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
1945 const Elf_Internal_Rela *, struct ppc_link_hash_table *));
1946static struct ppc_stub_hash_entry *ppc_add_stub
1947 PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
1948static boolean create_linkage_sections
1949 PARAMS ((bfd *, struct bfd_link_info *));
1950static boolean create_got_section
1951 PARAMS ((bfd *, struct bfd_link_info *));
1952static boolean ppc64_elf_create_dynamic_sections
1953 PARAMS ((bfd *, struct bfd_link_info *));
1954static void ppc64_elf_copy_indirect_symbol
1955 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
1956static boolean ppc64_elf_check_relocs
1957 PARAMS ((bfd *, struct bfd_link_info *, asection *,
1958 const Elf_Internal_Rela *));
1959static asection * ppc64_elf_gc_mark_hook
1e2f5b6e
AM		 1960 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
1961 struct elf_link_hash_entry *, Elf_Internal_Sym *));
721956f4 1962static boolean ppc64_elf_gc_sweep_hook
1e2f5b6e
AM		 1963 PARAMS ((bfd *, struct bfd_link_info *, asection *,
1964 const Elf_Internal_Rela *));
721956f4
AM		 1965static boolean func_desc_adjust
1966 PARAMS ((struct elf_link_hash_entry *, PTR));
1967static boolean ppc64_elf_func_desc_adjust
1968 PARAMS ((bfd *, struct bfd_link_info *));
1969static boolean ppc64_elf_adjust_dynamic_symbol
1970 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1971static void ppc64_elf_hide_symbol
1972 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
1e2f5b6e
AM		 1973static boolean edit_opd
1974 PARAMS ((bfd *, struct bfd_link_info *));
721956f4
AM		 1975static boolean allocate_dynrelocs
1976 PARAMS ((struct elf_link_hash_entry *, PTR));
1977static boolean readonly_dynrelocs
1978 PARAMS ((struct elf_link_hash_entry *, PTR));
1979static enum elf_reloc_type_class ppc64_elf_reloc_type_class
1980 PARAMS ((const Elf_Internal_Rela *));
1981static boolean ppc64_elf_size_dynamic_sections
1982 PARAMS ((bfd *, struct bfd_link_info *));
1983static INLINE enum ppc_stub_type ppc_type_of_stub
1984 PARAMS ((asection *, const Elf_Internal_Rela *,
1985 struct ppc_link_hash_entry **, bfd_vma));
1986static bfd_byte *build_plt_stub
1987 PARAMS ((bfd *, bfd_byte *, int, int));
1988static boolean ppc_build_one_stub
1989 PARAMS ((struct bfd_hash_entry *, PTR));
1990static boolean ppc_size_one_stub
1991 PARAMS ((struct bfd_hash_entry *, PTR));
1992static void group_sections
1993 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean));
721956f4
AM		 1994static boolean ppc64_elf_relocate_section
1995 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
1996 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
1997 asection **));
1998static boolean ppc64_elf_finish_dynamic_symbol
1999 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2000 Elf_Internal_Sym *));
2001static boolean ppc64_elf_finish_dynamic_sections
2002 PARAMS ((bfd *, struct bfd_link_info *));
2003
65f38f15
AM		 2004/* Get the ppc64 ELF linker hash table from a link_info structure. */
2005
2006#define ppc_hash_table(p) \
2007 ((struct ppc_link_hash_table *) ((p)->hash))
2008
721956f4
AM		 2009#define ppc_stub_hash_lookup(table, string, create, copy) \
2010 ((struct ppc_stub_hash_entry *) \
2011 bfd_hash_lookup ((table), (string), (create), (copy)))
2012
2013#define ppc_branch_hash_lookup(table, string, create, copy) \
2014 ((struct ppc_branch_hash_entry *) \
2015 bfd_hash_lookup ((table), (string), (create), (copy)))
2016
2017/* Create an entry in the stub hash table. */
2018
2019static struct bfd_hash_entry *
2020stub_hash_newfunc (entry, table, string)
2021 struct bfd_hash_entry *entry;
2022 struct bfd_hash_table *table;
2023 const char *string;
2024{
2025 /* Allocate the structure if it has not already been allocated by a
2026 subclass. */
2027 if (entry == NULL)
2028 {
2029 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2030 if (entry == NULL)
2031 return entry;
2032 }
2033
2034 /* Call the allocation method of the superclass. */
2035 entry = bfd_hash_newfunc (entry, table, string);
2036 if (entry != NULL)
2037 {
2038 struct ppc_stub_hash_entry *eh;
2039
2040 /* Initialize the local fields. */
2041 eh = (struct ppc_stub_hash_entry *) entry;
2042 eh->stub_sec = NULL;
2043 eh->stub_offset = 0;
2044 eh->target_value = 0;
2045 eh->target_section = NULL;
2046 eh->stub_type = ppc_stub_none;
2047 eh->h = NULL;
2048 eh->id_sec = NULL;
2049 }
2050
2051 return entry;
2052}
2053
2054/* Create an entry in the branch hash table. */
2055
2056static struct bfd_hash_entry *
2057branch_hash_newfunc (entry, table, string)
2058 struct bfd_hash_entry *entry;
2059 struct bfd_hash_table *table;
2060 const char *string;
2061{
2062 /* Allocate the structure if it has not already been allocated by a
2063 subclass. */
2064 if (entry == NULL)
2065 {
2066 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2067 if (entry == NULL)
2068 return entry;
2069 }
2070
2071 /* Call the allocation method of the superclass. */
2072 entry = bfd_hash_newfunc (entry, table, string);
2073 if (entry != NULL)
2074 {
2075 struct ppc_branch_hash_entry *eh;
2076
2077 /* Initialize the local fields. */
2078 eh = (struct ppc_branch_hash_entry *) entry;
2079 eh->offset = 0;
2080 eh->iter = 0;
2081 }
2082
2083 return entry;
2084}
2085
65f38f15
AM		 2086/* Create an entry in a ppc64 ELF linker hash table. */
2087
2088static struct bfd_hash_entry *
2089link_hash_newfunc (entry, table, string)
2090 struct bfd_hash_entry *entry;
2091 struct bfd_hash_table *table;
2092 const char *string;
2093{
2094 /* Allocate the structure if it has not already been allocated by a
2095 subclass. */
2096 if (entry == NULL)
2097 {
2098 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2099 if (entry == NULL)
2100 return entry;
2101 }
2102
2103 /* Call the allocation method of the superclass. */
2104 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2105 if (entry != NULL)
2106 {
2107 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2108
721956f4 2109 eh->stub_cache = NULL;
65f38f15 2110 eh->dyn_relocs = NULL;
721956f4 2111 eh->oh = NULL;
e86ce104
AM		 2112 eh->is_func = 0;
2113 eh->is_func_descriptor = 0;
1e2f5b6e 2114 eh->is_entry = 0;
65f38f15
AM		 2115 }
2116
2117 return entry;
2118}
2119
2120/* Create a ppc64 ELF linker hash table. */
2121
2122static struct bfd_link_hash_table *
2123ppc64_elf_link_hash_table_create (abfd)
2124 bfd *abfd;
2125{
2126 struct ppc_link_hash_table *htab;
2127 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2128
e2d34d7d 2129 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
65f38f15
AM		 2130 if (htab == NULL)
2131 return NULL;
2132
2133 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2134 {
e2d34d7d 2135 free (htab);
65f38f15
AM		 2136 return NULL;
2137 }
2138
721956f4
AM		 2139 /* Init the stub hash table too. */
2140 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2141 return NULL;
2142
2143 /* And the branch hash table. */
2144 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2145 return NULL;
2146
2147 htab->stub_bfd = NULL;
2148 htab->add_stub_section = NULL;
2149 htab->layout_sections_again = NULL;
2150 htab->stub_group = NULL;
65f38f15
AM		 2151 htab->sgot = NULL;
2152 htab->srelgot = NULL;
2153 htab->splt = NULL;
2154 htab->srelplt = NULL;
2155 htab->sdynbss = NULL;
2156 htab->srelbss = NULL;
2157 htab->sglink = NULL;
82bd7b59 2158 htab->sfpr = NULL;
721956f4
AM		 2159 htab->sbrlt = NULL;
2160 htab->srelbrlt = NULL;
2161 htab->stub_error = 0;
2162 htab->has_14bit_branch = 0;
805fc799 2163 htab->have_undefweak = 0;
721956f4 2164 htab->stub_iteration = 0;
ec338859 2165 htab->sym_sec.abfd = NULL;
65f38f15
AM		 2166
2167 return &htab->elf.root;
2168}
2169
721956f4
AM		 2170/* Free the derived linker hash table. */
2171
2172static void
2173ppc64_elf_link_hash_table_free (hash)
2174 struct bfd_link_hash_table *hash;
2175{
2176 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
2177
2178 bfd_hash_table_free (&ret->stub_hash_table);
2179 bfd_hash_table_free (&ret->branch_hash_table);
2180 _bfd_generic_link_hash_table_free (hash);
2181}
2182
2183/* Build a name for an entry in the stub hash table. */
2184
2185static char *
2186ppc_stub_name (input_section, sym_sec, h, rel)
2187 const asection *input_section;
2188 const asection *sym_sec;
2189 const struct ppc_link_hash_entry *h;
2190 const Elf_Internal_Rela *rel;
2191{
2192 char *stub_name;
2193 bfd_size_type len;
2194
2195 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
2196 offsets from a sym as a branch target? In fact, we could
2197 probably assume the addend is always zero. */
2198 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
2199
2200 if (h)
2201 {
2202 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
2203 stub_name = bfd_malloc (len);
2204 if (stub_name != NULL)
2205 {
2206 sprintf (stub_name, "%08x_%s+%x",
2207 input_section->id & 0xffffffff,
2208 h->elf.root.root.string,
2209 (int) rel->r_addend & 0xffffffff);
2210 }
2211 }
2212 else
2213 {
2214 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2215 stub_name = bfd_malloc (len);
2216 if (stub_name != NULL)
2217 {
2218 sprintf (stub_name, "%08x_%x:%x+%x",
2219 input_section->id & 0xffffffff,
2220 sym_sec->id & 0xffffffff,
2221 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
2222 (int) rel->r_addend & 0xffffffff);
2223 }
2224 }
2225 return stub_name;
2226}
2227
2228/* Look up an entry in the stub hash. Stub entries are cached because
2229 creating the stub name takes a bit of time. */
2230
2231static struct ppc_stub_hash_entry *
2232ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
2233 const asection *input_section;
2234 const asection *sym_sec;
2235 struct elf_link_hash_entry *hash;
2236 const Elf_Internal_Rela *rel;
2237 struct ppc_link_hash_table *htab;
2238{
2239 struct ppc_stub_hash_entry *stub_entry;
2240 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
2241 const asection *id_sec;
2242
2243 /* If this input section is part of a group of sections sharing one
2244 stub section, then use the id of the first section in the group.
2245 Stub names need to include a section id, as there may well be
2246 more than one stub used to reach say, printf, and we need to
2247 distinguish between them. */
2248 id_sec = htab->stub_group[input_section->id].link_sec;
2249
2250 if (h != NULL && h->stub_cache != NULL
2251 && h->stub_cache->h == h
2252 && h->stub_cache->id_sec == id_sec)
2253 {
2254 stub_entry = h->stub_cache;
2255 }
2256 else
2257 {
2258 char *stub_name;
2259
2260 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
2261 if (stub_name == NULL)
2262 return NULL;
2263
2264 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
2265 stub_name, false, false);
2266 if (h != NULL)
2267 h->stub_cache = stub_entry;
2268
2269 free (stub_name);
2270 }
2271
2272 return stub_entry;
2273}
2274
2275/* Add a new stub entry to the stub hash. Not all fields of the new
2276 stub entry are initialised. */
2277
2278static struct ppc_stub_hash_entry *
2279ppc_add_stub (stub_name, section, htab)
2280 const char *stub_name;
2281 asection *section;
2282 struct ppc_link_hash_table *htab;
2283{
2284 asection *link_sec;
2285 asection *stub_sec;
2286 struct ppc_stub_hash_entry *stub_entry;
2287
2288 link_sec = htab->stub_group[section->id].link_sec;
2289 stub_sec = htab->stub_group[section->id].stub_sec;
2290 if (stub_sec == NULL)
2291 {
2292 stub_sec = htab->stub_group[link_sec->id].stub_sec;
2293 if (stub_sec == NULL)
2294 {
d4c88bbb 2295 size_t namelen;
721956f4
AM		 2296 bfd_size_type len;
2297 char *s_name;
2298
d4c88bbb
AM		 2299 namelen = strlen (link_sec->name);
2300 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 2301 s_name = bfd_alloc (htab->stub_bfd, len);
2302 if (s_name == NULL)
2303 return NULL;
2304
d4c88bbb
AM		 2305 memcpy (s_name, link_sec->name, namelen);
2306 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 2307 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
2308 if (stub_sec == NULL)
2309 return NULL;
2310 htab->stub_group[link_sec->id].stub_sec = stub_sec;
2311 }
2312 htab->stub_group[section->id].stub_sec = stub_sec;
2313 }
2314
2315 /* Enter this entry into the linker stub hash table. */
2316 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2317 true, false);
2318 if (stub_entry == NULL)
2319 {
2320 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2321 bfd_archive_filename (section->owner),
2322 stub_name);
2323 return NULL;
2324 }
2325
2326 stub_entry->stub_sec = stub_sec;
2327 stub_entry->stub_offset = 0;
2328 stub_entry->id_sec = link_sec;
2329 return stub_entry;
2330}
2331
82bd7b59
AM		 2332/* Create sections for linker generated code. */
2333
2334static boolean
2335create_linkage_sections (dynobj, info)
2336 bfd *dynobj;
2337 struct bfd_link_info *info;
2338{
2339 struct ppc_link_hash_table *htab;
2340 flagword flags;
2341
2342 htab = ppc_hash_table (info);
2343
2344 /* Create .sfpr for code to save and restore fp regs. */
2345 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
2346 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 2347 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 2348 if (htab->sfpr == NULL
2349 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
2350 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
2351 return false;
2352
721956f4
AM		 2353 /* Create .glink for lazy dynamic linking support. */
2354 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
82bd7b59
AM		 2355 if (htab->sglink == NULL
2356 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
2357 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
2358 return false;
2359
721956f4
AM		 2360 /* Create .branch_lt for plt_branch stubs. */
2361 flags = (SEC_ALLOC | SEC_LOAD
2362 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2363 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
2364 if (htab->sbrlt == NULL
2365 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
2366 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
2367 return false;
2368
2369 if (info->shared)
2370 {
2371 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
2372 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1e2f5b6e 2373 htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
721956f4
AM		 2374 if (!htab->srelbrlt
2375 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
2376 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
2377 return false;
2378 }
82bd7b59
AM		 2379 return true;
2380}
2381
65f38f15
AM		 2382/* Create .got and .rela.got sections in DYNOBJ, and set up
2383 shortcuts to them in our hash table. */
2384
2385static boolean
2386create_got_section (dynobj, info)
2387 bfd *dynobj;
2388 struct bfd_link_info *info;
2389{
2390 struct ppc_link_hash_table *htab;
2391
2392 if (! _bfd_elf_create_got_section (dynobj, info))
2393 return false;
2394
2395 htab = ppc_hash_table (info);
2396 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2397 if (!htab->sgot)
2398 abort ();
2399
2400 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
2401 if (!htab->srelgot
2402 || ! bfd_set_section_flags (dynobj, htab->srelgot,
2403 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2404 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2405 | SEC_READONLY))
2406 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
2407 return false;
2408 return true;
2409}
5bd4f169 2410
82bd7b59 2411/* Create the dynamic sections, and set up shortcuts. */
5bd4f169
AM		 2412
2413static boolean
65f38f15
AM		 2414ppc64_elf_create_dynamic_sections (dynobj, info)
2415 bfd *dynobj;
5bd4f169
AM		 2416 struct bfd_link_info *info;
2417{
65f38f15 2418 struct ppc_link_hash_table *htab;
5bd4f169 2419
65f38f15
AM		 2420 htab = ppc_hash_table (info);
2421 if (!htab->sgot && !create_got_section (dynobj, info))
5bd4f169
AM		 2422 return false;
2423
65f38f15 2424 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
5bd4f169 2425 return false;
65f38f15
AM		 2426
2427 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2428 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2429 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2430 if (!info->shared)
2431 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2432
2433 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2434 || (!info->shared && !htab->srelbss))
2435 abort ();
2436
5bd4f169
AM		 2437 return true;
2438}
2439
65f38f15
AM		 2440/* Copy the extra info we tack onto an elf_link_hash_entry. */
2441
2442static void
2443ppc64_elf_copy_indirect_symbol (dir, ind)
2444 struct elf_link_hash_entry *dir, *ind;
2445{
2446 struct ppc_link_hash_entry *edir, *eind;
2447
2448 edir = (struct ppc_link_hash_entry *) dir;
2449 eind = (struct ppc_link_hash_entry *) ind;
2450
bbd7ec4a 2451 if (eind->dyn_relocs != NULL)
65f38f15 2452 {
bbd7ec4a
AM		 2453 if (edir->dyn_relocs != NULL)
2454 {
2455 struct ppc_dyn_relocs **pp;
2456 struct ppc_dyn_relocs *p;
2457
1e370bd2 2458 if (ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 2459 abort ();
2460
2461 /* Add reloc counts against the weak sym to the strong sym
2462 list. Merge any entries against the same section. */
2463 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2464 {
2465 struct ppc_dyn_relocs *q;
2466
2467 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2468 if (q->sec == p->sec)
2469 {
2470 q->pc_count += p->pc_count;
2471 q->count += p->count;
2472 *pp = p->next;
2473 break;
2474 }
2475 if (q == NULL)
2476 pp = &p->next;
2477 }
2478 *pp = edir->dyn_relocs;
2479 }
2480
65f38f15
AM		 2481 edir->dyn_relocs = eind->dyn_relocs;
2482 eind->dyn_relocs = NULL;
2483 }
65f38f15 2484
d1329ca3
AM		 2485 edir->is_func |= eind->is_func;
2486 edir->is_func_descriptor |= eind->is_func_descriptor;
1e2f5b6e 2487 edir->is_entry |= eind->is_entry;
e86ce104 2488
65f38f15
AM		 2489 _bfd_elf_link_hash_copy_indirect (dir, ind);
2490}
2491
1e2f5b6e
AM		 2492/* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
2493 symbols undefined on the command-line. */
2494
2495boolean
2496ppc64_elf_mark_entry_syms (info)
2497 struct bfd_link_info *info;
2498{
2499 struct ppc_link_hash_table *htab;
2500 struct bfd_sym_chain *sym;
2501
2502 htab = ppc_hash_table (info);
2503 for (sym = info->gc_sym_list; sym; sym = sym->next)
2504 {
2505 struct elf_link_hash_entry *h;
2506
2507 h = elf_link_hash_lookup (&htab->elf, sym->name, false, false, false);
2508 if (h != NULL)
2509 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
2510 }
2511 return true;
2512}
2513
5bd4f169 2514/* Look through the relocs for a section during the first phase, and
65f38f15 2515 calculate needed space in the global offset table, procedure
5d1634d7 2516 linkage table, and dynamic reloc sections. */
5bd4f169
AM		 2517
2518static boolean
2519ppc64_elf_check_relocs (abfd, info, sec, relocs)
2520 bfd *abfd;
2521 struct bfd_link_info *info;
2522 asection *sec;
2523 const Elf_Internal_Rela *relocs;
2524{
65f38f15 2525 struct ppc_link_hash_table *htab;
5bd4f169
AM		 2526 Elf_Internal_Shdr *symtab_hdr;
2527 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2528 const Elf_Internal_Rela *rel;
2529 const Elf_Internal_Rela *rel_end;
5bd4f169 2530 asection *sreloc;
1e2f5b6e 2531 asection **opd_sym_map;
5bd4f169
AM		 2532
2533 if (info->relocateable)
2534 return true;
2535
65f38f15 2536 htab = ppc_hash_table (info);
5bd4f169 2537 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 2538
2539 sym_hashes = elf_sym_hashes (abfd);
2540 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 2541 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
2542 - symtab_hdr->sh_info);
5bd4f169
AM		 2543
2544 sreloc = NULL;
1e2f5b6e
AM		 2545 opd_sym_map = NULL;
2546 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
2547 {
2548 /* Garbage collection needs some extra help with .opd sections.
2549 We don't want to necessarily keep everything referenced by
2550 relocs in .opd, as that would keep all functions. Instead,
2551 if we reference an .opd symbol (a function descriptor), we
2552 want to keep the function code symbol's section. This is
2553 easy for global symbols, but for local syms we need to keep
2554 information about the associated function section. Later, if
2555 edit_opd deletes entries, we'll use this array to adjust
2556 local syms in .opd. */
2557 union opd_info {
2558 asection *func_section;
2559 long entry_adjust;
2560 };
2561 bfd_size_type amt;
2562
2563 amt = sec->_raw_size * sizeof (union opd_info) / 24;
2564 opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
2565 if (opd_sym_map == NULL)
2566 return false;
2567 elf_section_data (sec)->tdata = opd_sym_map;
2568 }
5bd4f169 2569
82bd7b59
AM		 2570 if (htab->elf.dynobj == NULL)
2571 htab->elf.dynobj = abfd;
2572 if (htab->sfpr == NULL
2573 && !create_linkage_sections (htab->elf.dynobj, info))
2574 return false;
2575
5bd4f169
AM		 2576 rel_end = relocs + sec->reloc_count;
2577 for (rel = relocs; rel < rel_end; rel++)
2578 {
2579 unsigned long r_symndx;
2580 struct elf_link_hash_entry *h;
a33d1f77 2581 enum elf_ppc_reloc_type r_type;
5bd4f169
AM		 2582
2583 r_symndx = ELF64_R_SYM (rel->r_info);
2584 if (r_symndx < symtab_hdr->sh_info)
2585 h = NULL;
2586 else
2587 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2588
a33d1f77
AM		 2589 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2590 switch (r_type)
5bd4f169
AM		 2591 {
2592 /* GOT16 relocations */
2593 case R_PPC64_GOT16:
5bd4f169 2594 case R_PPC64_GOT16_DS:
65f38f15
AM		 2595 case R_PPC64_GOT16_HA:
2596 case R_PPC64_GOT16_HI:
2597 case R_PPC64_GOT16_LO:
5bd4f169 2598 case R_PPC64_GOT16_LO_DS:
5bd4f169 2599
65f38f15 2600 /* This symbol requires a global offset table entry. */
82bd7b59
AM		 2601 if (htab->sgot == NULL
2602 && !create_got_section (htab->elf.dynobj, info))
2603 return false;
5bd4f169
AM		 2604
2605 if (h != NULL)
2606 {
65f38f15 2607 h->got.refcount += 1;
5bd4f169
AM		 2608 }
2609 else
2610 {
65f38f15
AM		 2611 bfd_signed_vma *local_got_refcounts;
2612
5bd4f169 2613 /* This is a global offset table entry for a local symbol. */
65f38f15 2614 local_got_refcounts = elf_local_got_refcounts (abfd);
5bd4f169
AM		 2615 if (local_got_refcounts == NULL)
2616 {
dc810e39 2617 bfd_size_type size;
5bd4f169 2618
dc810e39
AM		 2619 size = symtab_hdr->sh_info;
2620 size *= sizeof (bfd_signed_vma);
2621 local_got_refcounts = ((bfd_signed_vma *)
65f38f15 2622 bfd_zalloc (abfd, size));
5bd4f169
AM		 2623 if (local_got_refcounts == NULL)
2624 return false;
2625 elf_local_got_refcounts (abfd) = local_got_refcounts;
5bd4f169 2626 }
65f38f15 2627 local_got_refcounts[r_symndx] += 1;
5bd4f169
AM		 2628 }
2629 break;
2630
5bd4f169 2631 case R_PPC64_PLT16_HA:
65f38f15
AM		 2632 case R_PPC64_PLT16_HI:
2633 case R_PPC64_PLT16_LO:
2634 case R_PPC64_PLT32:
2635 case R_PPC64_PLT64:
5bd4f169 2636 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 2637 actually build the entry in adjust_dynamic_symbol,
2638 because this might be a case of linking PIC code without
2639 linking in any dynamic objects, in which case we don't
2640 need to generate a procedure linkage table after all. */
5bd4f169
AM		 2641 if (h == NULL)
2642 {
2643 /* It does not make sense to have a procedure linkage
3fad3c7c 2644 table entry for a local symbol. */
5bd4f169
AM		 2645 bfd_set_error (bfd_error_bad_value);
2646 return false;
2647 }
2648
65f38f15
AM		 2649 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2650 h->plt.refcount += 1;
e86ce104 2651 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5bd4f169
AM		 2652 break;
2653
2654 /* The following relocations don't need to propagate the
2655 relocation if linking a shared object since they are
2656 section relative. */
2657 case R_PPC64_SECTOFF:
2658 case R_PPC64_SECTOFF_LO:
2659 case R_PPC64_SECTOFF_HI:
2660 case R_PPC64_SECTOFF_HA:
2661 case R_PPC64_SECTOFF_DS:
2662 case R_PPC64_SECTOFF_LO_DS:
2663 case R_PPC64_TOC16:
2664 case R_PPC64_TOC16_LO:
2665 case R_PPC64_TOC16_HI:
2666 case R_PPC64_TOC16_HA:
2667 case R_PPC64_TOC16_DS:
2668 case R_PPC64_TOC16_LO_DS:
2669 break;
2670
2671 /* This relocation describes the C++ object vtable hierarchy.
2672 Reconstruct it for later use during GC. */
2673 case R_PPC64_GNU_VTINHERIT:
2674 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2675 return false;
2676 break;
2677
2678 /* This relocation describes which C++ vtable entries are actually
2679 used. Record for later use during GC. */
2680 case R_PPC64_GNU_VTENTRY:
2681 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2682 return false;
2683 break;
2684
721956f4
AM		 2685 case R_PPC64_REL14:
2686 case R_PPC64_REL14_BRTAKEN:
2687 case R_PPC64_REL14_BRNTAKEN:
2688 htab->has_14bit_branch = 1;
2689 /* Fall through. */
2690
5d1634d7 2691 case R_PPC64_REL24:
e86ce104
AM		 2692 if (h != NULL
2693 && h->root.root.string[0] == '.'
2694 && h->root.root.string[1] != 0)
5d1634d7
AM		 2695 {
2696 /* We may need a .plt entry if the function this reloc
2697 refers to is in a shared lib. */
2698 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2699 h->plt.refcount += 1;
e86ce104 2700 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5d1634d7
AM		 2701 }
2702 break;
2703
e86ce104 2704 case R_PPC64_ADDR64:
1e2f5b6e 2705 if (opd_sym_map != NULL
e86ce104
AM		 2706 && h != NULL
2707 && h->root.root.string[0] == '.'
2708 && h->root.root.string[1] != 0)
2709 {
2710 struct elf_link_hash_entry *fdh;
2711
2712 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
2713 false, false, false);
2714 if (fdh != NULL)
2715 {
e86ce104 2716 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
721956f4 2717 ((struct ppc_link_hash_entry *) fdh)->oh = h;
e86ce104 2718 ((struct ppc_link_hash_entry *) h)->is_func = 1;
721956f4 2719 ((struct ppc_link_hash_entry *) h)->oh = fdh;
e86ce104
AM		 2720 }
2721 }
1e2f5b6e
AM		 2722 if (opd_sym_map != NULL
2723 && h == NULL
2724 && rel + 1 < rel_end
2725 && ((enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
2726 == R_PPC64_TOC))
2727 {
2728 asection *s;
2729
2730 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
2731 r_symndx);
2732 if (s == NULL)
2733 return false;
2734 else if (s != sec)
2735 opd_sym_map[rel->r_offset / 24] = s;
2736 }
e86ce104
AM		 2737 /* Fall through. */
2738
5bd4f169
AM		 2739 case R_PPC64_REL64:
2740 case R_PPC64_REL32:
65f38f15
AM		 2741 case R_PPC64_ADDR14:
2742 case R_PPC64_ADDR14_BRNTAKEN:
2743 case R_PPC64_ADDR14_BRTAKEN:
2744 case R_PPC64_ADDR16:
2745 case R_PPC64_ADDR16_DS:
2746 case R_PPC64_ADDR16_HA:
2747 case R_PPC64_ADDR16_HI:
2748 case R_PPC64_ADDR16_HIGHER:
2749 case R_PPC64_ADDR16_HIGHERA:
2750 case R_PPC64_ADDR16_HIGHEST:
2751 case R_PPC64_ADDR16_HIGHESTA:
2752 case R_PPC64_ADDR16_LO:
2753 case R_PPC64_ADDR16_LO_DS:
2754 case R_PPC64_ADDR24:
2755 case R_PPC64_ADDR30:
2756 case R_PPC64_ADDR32:
65f38f15
AM		 2757 case R_PPC64_UADDR16:
2758 case R_PPC64_UADDR32:
2759 case R_PPC64_UADDR64:
5bd4f169 2760 case R_PPC64_TOC:
41bd81ab 2761 /* Don't propagate .opd relocs. */
1e2f5b6e 2762 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 2763 break;
e86ce104 2764
65f38f15
AM		 2765 /* If we are creating a shared library, and this is a reloc
2766 against a global symbol, or a non PC relative reloc
2767 against a local symbol, then we need to copy the reloc
2768 into the shared library. However, if we are linking with
2769 -Bsymbolic, we do not need to copy a reloc against a
2770 global symbol which is defined in an object we are
2771 including in the link (i.e., DEF_REGULAR is set). At
2772 this point we have not seen all the input files, so it is
2773 possible that DEF_REGULAR is not set now but will be set
2774 later (it is never cleared). In case of a weak definition,
2775 DEF_REGULAR may be cleared later by a strong definition in
2776 a shared library. We account for that possibility below by
2777 storing information in the relocs_copied field of the hash
2778 table entry. A similar situation occurs when creating
2779 shared libraries and symbol visibility changes render the
2780 symbol local.
2781
2782 If on the other hand, we are creating an executable, we
2783 may need to keep relocations for symbols satisfied by a
2784 dynamic library if we manage to avoid copy relocs for the
2785 symbol. */
2786 if ((info->shared
2787 && (sec->flags & SEC_ALLOC) != 0
a33d1f77 2788 && (IS_ABSOLUTE_RELOC (r_type)
65f38f15
AM		 2789 || (h != NULL
2790 && (! info->symbolic
2791 || h->root.type == bfd_link_hash_defweak
2792 || (h->elf_link_hash_flags
2793 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2794 || (!info->shared
2795 && (sec->flags & SEC_ALLOC) != 0
2796 && h != NULL
2797 && (h->root.type == bfd_link_hash_defweak
2798 || (h->elf_link_hash_flags
2799 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 2800 {
ec338859
AM		 2801 struct ppc_dyn_relocs *p;
2802 struct ppc_dyn_relocs **head;
2803
65f38f15
AM		 2804 /* We must copy these reloc types into the output file.
2805 Create a reloc section in dynobj and make room for
2806 this reloc. */
5bd4f169
AM		 2807 if (sreloc == NULL)
2808 {
2809 const char *name;
65f38f15 2810 bfd *dynobj;
5bd4f169
AM		 2811
2812 name = (bfd_elf_string_from_elf_section
2813 (abfd,
2814 elf_elfheader (abfd)->e_shstrndx,
2815 elf_section_data (sec)->rel_hdr.sh_name));
2816 if (name == NULL)
2817 return false;
2818
65f38f15
AM		 2819 if (strncmp (name, ".rela", 5) != 0
2820 || strcmp (bfd_get_section_name (abfd, sec),
2821 name + 5) != 0)
2822 {
2823 (*_bfd_error_handler)
2824 (_("%s: bad relocation section name `%s\'"),
2825 bfd_archive_filename (abfd), name);
5d1634d7 2826 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 2827 }
2828
65f38f15 2829 dynobj = htab->elf.dynobj;
5bd4f169
AM		 2830 sreloc = bfd_get_section_by_name (dynobj, name);
2831 if (sreloc == NULL)
2832 {
2833 flagword flags;
2834
2835 sreloc = bfd_make_section (dynobj, name);
2836 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2837 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2838 if ((sec->flags & SEC_ALLOC) != 0)
2839 flags |= SEC_ALLOC | SEC_LOAD;
2840 if (sreloc == NULL
2841 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 2842 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
5bd4f169
AM		 2843 return false;
2844 }
65f38f15 2845 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 2846 }
2847
65f38f15
AM		 2848 /* If this is a global symbol, we count the number of
2849 relocations we need for this symbol. */
2850 if (h != NULL)
2851 {
ec338859 2852 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 2853 }
2854 else
2855 {
ec338859
AM		 2856 /* Track dynamic relocs needed for local syms too.
2857 We really need local syms available to do this
2858 easily. Oh well. */
2859
2860 asection *s;
2861 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2862 sec, r_symndx);
2863 if (s == NULL)
2864 return false;
2865
2866 head = ((struct ppc_dyn_relocs **)
2867 &elf_section_data (s)->local_dynrel);
65f38f15 2868 }
ec338859
AM		 2869
2870 p = *head;
2871 if (p == NULL || p->sec != sec)
2872 {
2873 p = ((struct ppc_dyn_relocs *)
2874 bfd_alloc (htab->elf.dynobj,
2875 (bfd_size_type) sizeof *p));
2876 if (p == NULL)
2877 return false;
2878 p->next = *head;
2879 *head = p;
2880 p->sec = sec;
2881 p->count = 0;
2882 p->pc_count = 0;
2883 }
2884
2885 p->count += 1;
2886 if (!IS_ABSOLUTE_RELOC (r_type))
2887 p->pc_count += 1;
65f38f15 2888 }
5bd4f169 2889 break;
65f38f15
AM		 2890
2891 default:
96e0dda4 2892 break;
5bd4f169
AM		 2893 }
2894 }
2895
2896 return true;
2897}
2898
2899/* Return the section that should be marked against GC for a given
2900 relocation. */
2901
2902static asection *
1e2f5b6e
AM		 2903ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
2904 asection *sec;
5bd4f169
AM		 2905 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2906 Elf_Internal_Rela *rel;
2907 struct elf_link_hash_entry *h;
2908 Elf_Internal_Sym *sym;
2909{
1e2f5b6e
AM		 2910 asection *rsec = NULL;
2911
5bd4f169
AM		 2912 if (h != NULL)
2913 {
a33d1f77 2914 enum elf_ppc_reloc_type r_type;
1e2f5b6e 2915 struct ppc_link_hash_entry *fdh;
a33d1f77
AM		 2916
2917 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2918 switch (r_type)
5bd4f169
AM		 2919 {
2920 case R_PPC64_GNU_VTINHERIT:
2921 case R_PPC64_GNU_VTENTRY:
2922 break;
2923
2924 default:
2925 switch (h->root.type)
2926 {
2927 case bfd_link_hash_defined:
2928 case bfd_link_hash_defweak:
1e2f5b6e
AM		 2929 fdh = (struct ppc_link_hash_entry *) h;
2930
2931 /* Function descriptor syms cause the associated
2932 function code sym section to be marked. */
2933 if (fdh->is_func_descriptor)
2934 rsec = fdh->oh->root.u.def.section;
2935
2936 /* Function entry syms return NULL if they are in .opd
2937 and are not ._start (or others undefined on the ld
2938 command line). Thus we avoid marking all function
2939 sections, as all functions are referenced in .opd. */
2940 else if ((fdh->oh != NULL
2941 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
2942 || elf_section_data (sec)->tdata == NULL)
2943 rsec = h->root.u.def.section;
2944 break;
5bd4f169
AM		 2945
2946 case bfd_link_hash_common:
1e2f5b6e
AM		 2947 rsec = h->root.u.c.p->section;
2948 break;
5bd4f169
AM		 2949
2950 default:
2951 break;
2952 }
2953 }
2954 }
2955 else
2956 {
1e2f5b6e
AM		 2957 asection **opd_sym_section;
2958
2959 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2960 opd_sym_section = (asection **) elf_section_data (rsec)->tdata;
2961 if (opd_sym_section != NULL)
2962 rsec = opd_sym_section[sym->st_value / 24];
2963 else if (elf_section_data (sec)->tdata != NULL)
2964 rsec = NULL;
5bd4f169
AM		 2965 }
2966
1e2f5b6e 2967 return rsec;
5bd4f169
AM		 2968}
2969
65f38f15
AM		 2970/* Update the .got, .plt. and dynamic reloc reference counts for the
2971 section being removed. */
5bd4f169
AM		 2972
2973static boolean
2974ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2975 bfd *abfd;
2976 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2977 asection *sec;
2978 const Elf_Internal_Rela *relocs;
2979{
2980 Elf_Internal_Shdr *symtab_hdr;
2981 struct elf_link_hash_entry **sym_hashes;
2982 bfd_signed_vma *local_got_refcounts;
2983 const Elf_Internal_Rela *rel, *relend;
5bd4f169 2984
ec338859
AM		 2985 elf_section_data (sec)->local_dynrel = NULL;
2986
5bd4f169
AM		 2987 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2988 sym_hashes = elf_sym_hashes (abfd);
2989 local_got_refcounts = elf_local_got_refcounts (abfd);
2990
2991 relend = relocs + sec->reloc_count;
2992 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 2993 {
2994 unsigned long r_symndx;
2995 enum elf_ppc_reloc_type r_type;
2996 struct elf_link_hash_entry *h;
5bd4f169 2997
a33d1f77
AM		 2998 r_symndx = ELF64_R_SYM (rel->r_info);
2999 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3000 switch (r_type)
3001 {
3002 case R_PPC64_GOT16:
3003 case R_PPC64_GOT16_DS:
3004 case R_PPC64_GOT16_HA:
3005 case R_PPC64_GOT16_HI:
3006 case R_PPC64_GOT16_LO:
3007 case R_PPC64_GOT16_LO_DS:
3008 if (r_symndx >= symtab_hdr->sh_info)
3009 {
3010 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3011 if (h->got.refcount > 0)
3012 h->got.refcount--;
3013 }
3014 else
3015 {
3016 if (local_got_refcounts[r_symndx] > 0)
3017 local_got_refcounts[r_symndx]--;
3018 }
3019 break;
65f38f15 3020
a33d1f77
AM		 3021 case R_PPC64_PLT16_HA:
3022 case R_PPC64_PLT16_HI:
3023 case R_PPC64_PLT16_LO:
3024 case R_PPC64_PLT32:
3025 case R_PPC64_PLT64:
3026 if (r_symndx >= symtab_hdr->sh_info)
3027 {
3028 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3029 if (h->plt.refcount > 0)
3030 h->plt.refcount--;
3031 }
3032 break;
65f38f15 3033
721956f4
AM		 3034 case R_PPC64_REL14:
3035 case R_PPC64_REL14_BRNTAKEN:
3036 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 3037 case R_PPC64_REL24:
3038 if (r_symndx >= symtab_hdr->sh_info)
3039 {
3040 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3041 if (h->plt.refcount > 0)
3042 h->plt.refcount--;
3043 }
e86ce104 3044 break;
5d1634d7 3045
a33d1f77
AM		 3046 case R_PPC64_REL32:
3047 case R_PPC64_REL64:
3048 if (r_symndx >= symtab_hdr->sh_info)
3049 {
3050 struct ppc_link_hash_entry *eh;
3051 struct ppc_dyn_relocs **pp;
3052 struct ppc_dyn_relocs *p;
65f38f15 3053
a33d1f77
AM		 3054 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3055 eh = (struct ppc_link_hash_entry *) h;
65f38f15 3056
a33d1f77
AM		 3057 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3058 if (p->sec == sec)
3059 {
3060 p->pc_count -= 1;
3061 p->count -= 1;
3062 if (p->count == 0)
3063 *pp = p->next;
3064 break;
3065 }
3066 }
3067 break;
65f38f15 3068
a33d1f77
AM		 3069 case R_PPC64_ADDR14:
3070 case R_PPC64_ADDR14_BRNTAKEN:
3071 case R_PPC64_ADDR14_BRTAKEN:
3072 case R_PPC64_ADDR16:
3073 case R_PPC64_ADDR16_DS:
3074 case R_PPC64_ADDR16_HA:
3075 case R_PPC64_ADDR16_HI:
3076 case R_PPC64_ADDR16_HIGHER:
3077 case R_PPC64_ADDR16_HIGHERA:
3078 case R_PPC64_ADDR16_HIGHEST:
3079 case R_PPC64_ADDR16_HIGHESTA:
3080 case R_PPC64_ADDR16_LO:
3081 case R_PPC64_ADDR16_LO_DS:
3082 case R_PPC64_ADDR24:
3083 case R_PPC64_ADDR30:
3084 case R_PPC64_ADDR32:
3085 case R_PPC64_ADDR64:
3086 case R_PPC64_UADDR16:
3087 case R_PPC64_UADDR32:
3088 case R_PPC64_UADDR64:
3089 case R_PPC64_TOC:
3090 if (r_symndx >= symtab_hdr->sh_info)
3091 {
3092 struct ppc_link_hash_entry *eh;
3093 struct ppc_dyn_relocs **pp;
3094 struct ppc_dyn_relocs *p;
65f38f15 3095
a33d1f77
AM		 3096 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3097 eh = (struct ppc_link_hash_entry *) h;
3098
3099 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3100 if (p->sec == sec)
3101 {
3102 p->count -= 1;
3103 if (p->count == 0)
3104 *pp = p->next;
3105 break;
3106 }
3107 }
3108 break;
5bd4f169 3109
a33d1f77
AM		 3110 default:
3111 break;
3112 }
3113 }
5bd4f169
AM		 3114 return true;
3115}
3116
e86ce104
AM		 3117/* Called via elf_link_hash_traverse to transfer dynamic linking
3118 information on function code symbol entries to their corresponding
3119 function descriptor symbol entries. */
5bd4f169 3120static boolean
e86ce104 3121func_desc_adjust (h, inf)
5bd4f169 3122 struct elf_link_hash_entry *h;
e86ce104 3123 PTR inf;
5bd4f169 3124{
e86ce104 3125 struct bfd_link_info *info;
65f38f15 3126 struct ppc_link_hash_table *htab;
5bd4f169 3127
e92d460e 3128 if (h->root.type == bfd_link_hash_indirect)
e86ce104
AM		 3129 return true;
3130
e92d460e
AM		 3131 if (h->root.type == bfd_link_hash_warning)
3132 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3133
e86ce104 3134 info = (struct bfd_link_info *) inf;
65f38f15 3135 htab = ppc_hash_table (info);
5bd4f169 3136
e86ce104
AM		 3137 /* If this is a function code symbol, transfer dynamic linking
3138 information to the function descriptor symbol. */
3139 if (!((struct ppc_link_hash_entry *) h)->is_func)
3140 return true;
3141
805fc799
AM		 3142 if (h->root.type == bfd_link_hash_undefweak
3143 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
3144 htab->have_undefweak = true;
3145
e86ce104
AM		 3146 if (h->plt.refcount > 0
3147 && h->root.root.string[0] == '.'
3148 && h->root.root.string[1] != '\0')
5bd4f169 3149 {
721956f4 3150 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
e86ce104 3151 boolean force_local;
5bd4f169 3152
648cca2c
AM		 3153 /* Find the corresponding function descriptor symbol. Create it
3154 as undefined if necessary. */
5bd4f169 3155
721956f4
AM		 3156 if (fdh == NULL)
3157 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3158 false, false, true);
5bd4f169 3159
d926e03d
AM		 3160 if (fdh == NULL
3161 && info->shared
3162 && (h->root.type == bfd_link_hash_undefined
3163 || h->root.type == bfd_link_hash_undefweak))
648cca2c
AM		 3164 {
3165 bfd *abfd;
3166 asymbol *newsym;
3167
d926e03d 3168 abfd = h->root.u.undef.abfd;
648cca2c
AM		 3169 newsym = bfd_make_empty_symbol (abfd);
3170 newsym->name = h->root.root.string + 1;
3171 newsym->section = bfd_und_section_ptr;
3172 newsym->value = 0;
3173 newsym->flags = BSF_OBJECT;
3174 if (h->root.type == bfd_link_hash_undefweak)
3175 newsym->flags |= BSF_WEAK;
3176
3177 if ( !(_bfd_generic_link_add_one_symbol
3178 (info, abfd, newsym->name, newsym->flags,
3179 newsym->section, newsym->value, NULL, false, false,
3180 (struct bfd_link_hash_entry **) &fdh)))
3181 {
3182 return false;
3183 }
d926e03d 3184 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
648cca2c
AM		 3185 }
3186
e86ce104
AM		 3187 if (fdh != NULL
3188 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
3189 && (info->shared
3190 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3191 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
3192 {
3193 if (fdh->dynindx == -1)
3194 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
3195 return false;
e86ce104
AM		 3196 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
3197 & (ELF_LINK_HASH_REF_REGULAR
3198 | ELF_LINK_HASH_REF_DYNAMIC
3199 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
3200 | ELF_LINK_NON_GOT_REF));
e1fa50e7
AM		 3201 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3202 {
3203 fdh->plt.refcount = h->plt.refcount;
3204 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3205 }
e86ce104 3206 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
721956f4 3207 ((struct ppc_link_hash_entry *) fdh)->oh = h;
721956f4 3208 ((struct ppc_link_hash_entry *) h)->oh = fdh;
e86ce104
AM		 3209 }
3210
3211 /* Now that the info is on the function descriptor, clear the
3212 function code sym info. Any function code syms for which we
3213 don't have a definition in a regular file, we force local.
3214 This prevents a shared library from exporting syms that have
3215 been imported from another library. Function code syms that
3216 are really in the library we must leave global to prevent the
e1fa50e7 3217 linker dragging in a definition from a static library. */
ea1e4b0d
AM		 3218 force_local = (info->shared
3219 && ((h->elf_link_hash_flags
3220 & ELF_LINK_HASH_DEF_REGULAR) == 0
3221 || fdh == NULL
3222 || (fdh->elf_link_hash_flags
3223 & ELF_LINK_HASH_DEF_REGULAR) == 0
3224 || (fdh->elf_link_hash_flags
3225 & ELF_LINK_FORCED_LOCAL) != 0));
e86ce104
AM		 3226 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3227 }
3228
3229 return true;
3230}
40b8271b 3231
82bd7b59
AM		 3232#define MIN_SAVE_FPR 14
3233#define MAX_SAVE_FPR 31
3234
e86ce104 3235/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 3236 this hook to a) provide some gcc support functions, and b) transfer
3237 dynamic linking information gathered so far on function code symbol
3238 entries, to their corresponding function descriptor symbol entries. */
e86ce104
AM		 3239static boolean
3240ppc64_elf_func_desc_adjust (obfd, info)
3241 bfd *obfd ATTRIBUTE_UNUSED;
3242 struct bfd_link_info *info;
3243{
3244 struct ppc_link_hash_table *htab;
82bd7b59
AM		 3245 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
3246 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
3247 unsigned int i;
3248 struct elf_link_hash_entry *h;
721956f4 3249 bfd_byte *p;
82bd7b59 3250 char sym[10];
e86ce104
AM		 3251
3252 htab = ppc_hash_table (info);
82bd7b59
AM		 3253
3254 if (htab->sfpr == NULL)
3255 /* We don't have any relocs. */
3256 return true;
3257
3258 /* First provide any missing ._savef* and ._restf* functions. */
3259 memcpy (sym, "._savef14", 10);
3260 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3261 {
3262 sym[7] = i / 10 + '0';
3263 sym[8] = i % 10 + '0';
3264 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3265 if (h != NULL
3266 && h->root.type == bfd_link_hash_undefined)
3267 {
3268 if (lowest_savef > i)
3269 lowest_savef = i;
3270 h->root.type = bfd_link_hash_defined;
3271 h->root.u.def.section = htab->sfpr;
3272 h->root.u.def.value = (i - lowest_savef) * 4;
3273 h->type = STT_FUNC;
3274 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3275 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3276 }
3277 }
3278
3279 memcpy (sym, "._restf14", 10);
3280 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3281 {
3282 sym[7] = i / 10 + '0';
3283 sym[8] = i % 10 + '0';
3284 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3285 if (h != NULL
3286 && h->root.type == bfd_link_hash_undefined)
3287 {
3288 if (lowest_restf > i)
3289 lowest_restf = i;
3290 h->root.type = bfd_link_hash_defined;
3291 h->root.u.def.section = htab->sfpr;
3292 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3293 + (i - lowest_restf) * 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
805fc799
AM		 3300 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
3301
82bd7b59
AM		 3302 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3303 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
3304
3305 if (htab->sfpr->_raw_size == 0)
805fc799
AM		 3306 {
3307 if (!htab->have_undefweak)
3308 {
3309 _bfd_strip_section_from_output (info, htab->sfpr);
3310 return true;
3311 }
3312
3313 htab->sfpr->_raw_size = 4;
3314 }
82bd7b59 3315
721956f4
AM		 3316 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
3317 if (p == NULL)
3318 return false;
3319 htab->sfpr->contents = p;
3320
3321 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
3322 {
3323 unsigned int fpr = i << 21;
3324 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3325 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
3326 p += 4;
3327 }
3328 if (lowest_savef <= MAX_SAVE_FPR)
3329 {
82bd7b59
AM		 3330 bfd_put_32 (htab->elf.dynobj, BLR, p);
3331 p += 4;
721956f4 3332 }
82bd7b59 3333
721956f4
AM		 3334 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
3335 {
3336 unsigned int fpr = i << 21;
3337 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3338 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
82bd7b59
AM		 3339 p += 4;
3340 }
721956f4
AM		 3341 if (lowest_restf <= MAX_SAVE_FPR
3342 || htab->sfpr->_raw_size == 4)
3343 {
3344 bfd_put_32 (htab->elf.dynobj, BLR, p);
3345 }
82bd7b59 3346
e86ce104
AM		 3347 return true;
3348}
3349
3350/* Adjust a symbol defined by a dynamic object and referenced by a
3351 regular object. The current definition is in some section of the
3352 dynamic object, but we're not including those sections. We have to
3353 change the definition to something the rest of the link can
3354 understand. */
3355
3356static boolean
3357ppc64_elf_adjust_dynamic_symbol (info, h)
3358 struct bfd_link_info *info;
3359 struct elf_link_hash_entry *h;
3360{
3361 struct ppc_link_hash_table *htab;
3362 struct ppc_link_hash_entry * eh;
3363 struct ppc_dyn_relocs *p;
3364 asection *s;
3365 unsigned int power_of_two;
3366
3367 htab = ppc_hash_table (info);
3368
3369 /* Deal with function syms. */
3370 if (h->type == STT_FUNC
3371 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
3372 {
3373 /* Clear procedure linkage table information for any symbol that
3374 won't need a .plt entry. */
3375 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
3376 || h->plt.refcount <= 0
3377 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3378 || (! info->shared
3379 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
3380 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
40b8271b 3381 {
40b8271b
AM		 3382 h->plt.offset = (bfd_vma) -1;
3383 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
40b8271b 3384 }
5bd4f169
AM		 3385 return true;
3386 }
bbd7ec4a
AM		 3387 else
3388 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 3389
3390 /* If this is a weak symbol, and there is a real definition, the
3391 processor independent code will have arranged for us to see the
3392 real definition first, and we can just use the same value. */
3393 if (h->weakdef != NULL)
3394 {
3395 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3396 || h->weakdef->root.type == bfd_link_hash_defweak);
3397 h->root.u.def.section = h->weakdef->root.u.def.section;
3398 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 3399 return true;
5bd4f169
AM		 3400 }
3401
3402 /* This is a reference to a symbol defined by a dynamic object which
3403 is not a function. */
3404
3405 /* If we are creating a shared library, we must presume that the
3406 only references to the symbol are via the global offset table.
3407 For such cases we need not do anything here; the relocations will
3408 be handled correctly by relocate_section. */
3409 if (info->shared)
3410 return true;
3411
65f38f15
AM		 3412 /* If there are no references to this symbol that do not use the
3413 GOT, we don't need to generate a copy reloc. */
3414 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
3415 return true;
3416
3417 eh = (struct ppc_link_hash_entry *) h;
3418 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3419 {
3420 s = p->sec->output_section;
3421 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3422 break;
3423 }
3424
3425 /* If we didn't find any dynamic relocs in read-only sections, then
5d1634d7 3426 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
65f38f15
AM		 3427 if (p == NULL)
3428 {
3429 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
3430 return true;
3431 }
3432
5bd4f169
AM		 3433 /* We must allocate the symbol in our .dynbss section, which will
3434 become part of the .bss section of the executable. There will be
3435 an entry for this symbol in the .dynsym section. The dynamic
3436 object will contain position independent code, so all references
3437 from the dynamic object to this symbol will go through the global
3438 offset table. The dynamic linker will use the .dynsym entry to
3439 determine the address it must put in the global offset table, so
3440 both the dynamic object and the regular object will refer to the
3441 same memory location for the variable. */
5bd4f169
AM		 3442
3443 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3444 copy the initial value out of the dynamic object and into the
3445 runtime process image. We need to remember the offset into the
3446 .rela.bss section we are going to use. */
3447 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3448 {
65f38f15 3449 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 3450 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
3451 }
3452
3453 /* We need to figure out the alignment required for this symbol. I
3454 have no idea how ELF linkers handle this. */
3455 power_of_two = bfd_log2 (h->size);
3456 if (power_of_two > 4)
3457 power_of_two = 4;
3458
3459 /* Apply the required alignment. */
65f38f15
AM		 3460 s = htab->sdynbss;
3461 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
3462 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 3463 {
65f38f15 3464 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 3465 return false;
3466 }
3467
3468 /* Define the symbol as being at this point in the section. */
3469 h->root.u.def.section = s;
3470 h->root.u.def.value = s->_raw_size;
3471
3472 /* Increment the section size to make room for the symbol. */
3473 s->_raw_size += h->size;
3474
3475 return true;
3476}
3477
e86ce104
AM		 3478/* If given a function descriptor symbol, hide both the function code
3479 sym and the descriptor. */
3480static void
3481ppc64_elf_hide_symbol (info, h, force_local)
3482 struct bfd_link_info *info;
3483 struct elf_link_hash_entry *h;
3484 boolean force_local;
3485{
3486 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3487
3488 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
3489 {
721956f4 3490 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
e86ce104 3491
721956f4 3492 if (fh == NULL)
d1329ca3
AM		 3493 {
3494 const char *p, *q;
3495 struct ppc_link_hash_table *htab;
3496 char save;
3497
3498 /* We aren't supposed to use alloca in BFD because on
3499 systems which do not have alloca the version in libiberty
3500 calls xmalloc, which might cause the program to crash
3501 when it runs out of memory. This function doesn't have a
3502 return status, so there's no way to gracefully return an
3503 error. So cheat. We know that string[-1] can be safely
3504 dereferenced; It's either a string in an ELF string
3505 table, or allocated in an objalloc structure. */
3506
3507 p = h->root.root.string - 1;
3508 save = *p;
3509 *(char *) p = '.';
3510 htab = ppc_hash_table (info);
3511 fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
3512 *(char *) p = save;
3513
3514 /* Unfortunately, if it so happens that the string we were
3515 looking for was allocated immediately before this string,
3516 then we overwrote the string terminator. That's the only
3517 reason the lookup should fail. */
3518 if (fh == NULL)
3519 {
3520 q = h->root.root.string + strlen (h->root.root.string);
3521 while (q >= h->root.root.string && *q == *p)
3522 --q, --p;
3523 if (q < h->root.root.string && *p == '.')
3524 fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
3525 }
3526 if (fh != NULL)
3527 {
3528 ((struct ppc_link_hash_entry *) h)->oh = fh;
3529 ((struct ppc_link_hash_entry *) fh)->oh = h;
3530 }
3531 }
e86ce104
AM		 3532 if (fh != NULL)
3533 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
3534 }
3535}
3536
1e2f5b6e
AM		 3537static boolean
3538edit_opd (obfd, info)
3539 bfd *obfd;
3540 struct bfd_link_info *info;
3541{
3542 bfd *ibfd;
3543 unsigned int bfd_indx;
1e2f5b6e
AM		 3544
3545 for (bfd_indx = 0, ibfd = info->input_bfds;
3546 ibfd != NULL;
3547 ibfd = ibfd->link_next, bfd_indx++)
3548 {
3549 asection *sec;
3550 Elf_Internal_Rela *relstart, *rel, *relend;
3551 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 3552 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 3553 struct elf_link_hash_entry **sym_hashes;
3554 bfd_vma offset;
3555 long *adjust;
3556 boolean need_edit;
3557
3558 sec = bfd_get_section_by_name (ibfd, ".opd");
3559 if (sec == NULL)
3560 continue;
3561
3562 adjust = (long *) elf_section_data (sec)->tdata;
3563 BFD_ASSERT (adjust != NULL);
3564 memset (adjust, 0, (size_t) sec->_raw_size * sizeof (long) / 24);
3565
3566 if (sec->output_section == bfd_abs_section_ptr)
3567 continue;
3568
3569 /* Look through the section relocs. */
3570 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
3571 continue;
3572
6cdc0ccc 3573 local_syms = NULL;
1e2f5b6e
AM		 3574 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3575 sym_hashes = elf_sym_hashes (ibfd);
3576
3577 /* Read the relocations. */
3578 relstart = _bfd_elf64_link_read_relocs (obfd, sec, (PTR) NULL,
3579 (Elf_Internal_Rela *) NULL,
3580 info->keep_memory);
3581 if (relstart == NULL)
3582 return false;
3583
3584 /* First run through the relocs to check they are sane, and to
3585 determine whether we need to edit this opd section. */
3586 need_edit = false;
3587 offset = 0;
3588 relend = relstart + sec->reloc_count;
3589 for (rel = relstart; rel < relend; rel++)
3590 {
3591 enum elf_ppc_reloc_type r_type;
3592 unsigned long r_symndx;
3593 asection *sym_sec;
3594 struct elf_link_hash_entry *h;
3595 Elf_Internal_Sym *sym;
3596
3597 /* .opd contains a regular array of 24 byte entries. We're
3598 only interested in the reloc pointing to a function entry
3599 point. */
3600 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3601 if (r_type == R_PPC64_TOC)
3602 continue;
3603
3604 if (r_type != R_PPC64_ADDR64)
3605 {
3606 (*_bfd_error_handler)
3607 (_("%s: unexpected reloc type %u in .opd section"),
3608 bfd_archive_filename (ibfd), r_type);
3609 need_edit = false;
3610 break;
3611 }
3612
3613 if (rel + 1 >= relend)
3614 continue;
3615 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
3616 if (r_type != R_PPC64_TOC)
3617 continue;
3618
3619 if (rel->r_offset != offset)
3620 {
3621 /* If someone messes with .opd alignment then after a
3622 "ld -r" we might have padding in the middle of .opd.
3623 Also, there's nothing to prevent someone putting
3624 something silly in .opd with the assembler. No .opd
3625 optimization for them! */
3626 (*_bfd_error_handler)
3627 (_("%s: .opd is not a regular array of opd entries"),
3628 bfd_archive_filename (ibfd));
3629 need_edit = false;
3630 break;
3631 }
3632
3633 r_symndx = ELF64_R_SYM (rel->r_info);
3634 sym_sec = NULL;
3635 h = NULL;
3636 sym = NULL;
3637 if (r_symndx >= symtab_hdr->sh_info)
3638 {
3639 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3640 while (h->root.type == bfd_link_hash_indirect
3641 || h->root.type == bfd_link_hash_warning)
3642 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3643 if (h->root.type == bfd_link_hash_defined
3644 || h->root.type == bfd_link_hash_defweak)
3645 sym_sec = h->root.u.def.section;
3646 }
3647 else
3648 {
6cdc0ccc
AM		 3649 if (local_syms == NULL)
3650 {
3651 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3652 if (local_syms == NULL)
3653 local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3654 symtab_hdr->sh_info, 0,
3655 NULL, NULL, NULL);
3656 if (local_syms == NULL)
3657 goto error_free_rel;
3658 }
3659 sym = local_syms + r_symndx;
1e2f5b6e
AM		 3660 if ((sym->st_shndx != SHN_UNDEF
3661 && sym->st_shndx < SHN_LORESERVE)
3662 || sym->st_shndx > SHN_HIRESERVE)
3663 sym_sec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
3664 }
3665
3666 if (sym_sec == NULL || sym_sec->owner == NULL)
3667 {
3668 (*_bfd_error_handler)
3669 (_("%s: undefined sym `%s' in .opd section"),
3670 bfd_archive_filename (ibfd),
3671 h != NULL ? h->root.root.string : "<local symbol>");
3672 need_edit = false;
3673 break;
3674 }
3675
3676 if (sym_sec->output_section == bfd_abs_section_ptr)
3677 {
3678 /* OK, we've found a function that's excluded from the
3679 link. */
3680 need_edit = true;
3681 }
3682
3683 offset += 24;
3684 }
3685
3686 if (need_edit)
3687 {
3688 Elf_Internal_Rela *write_rel;
3689 bfd_byte *rptr, *wptr;
3690 boolean skip;
3691
3692 /* This seems a waste of time as input .opd sections are all
3693 zeros as generated by gcc, but I suppose there's no reason
3694 this will always be so. We might start putting something in
3695 the third word of .opd entries. */
3696 if ((sec->flags & SEC_IN_MEMORY) == 0)
3697 {
3698 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
6cdc0ccc
AM		 3699 if (loc == NULL
3700 || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
3701 sec->_raw_size))
3702 {
3703 if (local_syms != NULL
3704 && symtab_hdr->contents != (unsigned char *) local_syms)
3705 free (local_syms);
3706 error_free_rel:
3707 if (elf_section_data (sec)->relocs != relstart)
3708 free (relstart);
3709 return false;
3710 }
1e2f5b6e
AM		 3711 sec->contents = loc;
3712 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
3713 }
3714
3715 elf_section_data (sec)->relocs = relstart;
3716
3717 wptr = sec->contents;
3718 rptr = sec->contents;
3719 write_rel = relstart;
3720 skip = false;
3721 offset = 0;
3722 for (rel = relstart; rel < relend; rel++)
3723 {
3724 if (rel->r_offset == offset)
3725 {
3726 unsigned long r_symndx;
3727 asection *sym_sec;
3728 struct elf_link_hash_entry *h;
3729 Elf_Internal_Sym *sym;
3730
3731 r_symndx = ELF64_R_SYM (rel->r_info);
3732 sym_sec = NULL;
3733 h = NULL;
3734 sym = NULL;
3735 if (r_symndx >= symtab_hdr->sh_info)
3736 {
3737 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3738 while (h->root.type == bfd_link_hash_indirect
3739 || h->root.type == bfd_link_hash_warning)
3740 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3741 if (h->root.type == bfd_link_hash_defined
3742 || h->root.type == bfd_link_hash_defweak)
3743 sym_sec = h->root.u.def.section;
3744 }
3745 else
3746 {
6cdc0ccc 3747 sym = local_syms + r_symndx;
1e2f5b6e
AM		 3748 if ((sym->st_shndx != SHN_UNDEF
3749 && sym->st_shndx < SHN_LORESERVE)
3750 || sym->st_shndx > SHN_HIRESERVE)
3751 sym_sec = bfd_section_from_elf_index (ibfd,
3752 sym->st_shndx);
3753 }
3754
3755 skip = sym_sec->output_section == bfd_abs_section_ptr;
a4aa0fb7
AM		 3756 if (skip)
3757 {
3758 if (h != NULL)
3759 {
3760 /* Arrange for the function descriptor sym
3761 to be dropped. */
3762 struct elf_link_hash_entry *fdh;
3763 struct ppc_link_hash_entry *fh;
3764
3765 fh = (struct ppc_link_hash_entry *) h;
3766 BFD_ASSERT (fh->is_func);
3767 fdh = fh->oh;
3768 fdh->root.u.def.value = 0;
3769 fdh->root.u.def.section = sym_sec;
3770 }
3771 }
3772 else
1e2f5b6e
AM		 3773 {
3774 /* We'll be keeping this opd entry. */
3775
3776 if (h != NULL)
3777 {
3778 /* Redefine the function descriptor symbol
3779 to this location in the opd section.
3780 We've checked above that opd relocs are
3781 ordered. */
3782 struct elf_link_hash_entry *fdh;
3783 struct ppc_link_hash_entry *fh;
3784
3785 fh = (struct ppc_link_hash_entry *) h;
3786 BFD_ASSERT (fh->is_func);
3787 fdh = fh->oh;
3788 fdh->root.u.def.value = wptr - sec->contents;
3789 }
3790 else
3791 {
6cdc0ccc
AM		 3792 /* Local syms are a bit tricky. We could
3793 tweak them as they can be cached, but
3794 we'd need to look through the local syms
3795 for the function descriptor sym which we
3796 don't have at the moment. So keep an
3797 array of adjustments. */
1e2f5b6e
AM		 3798 adjust[(rel->r_offset + wptr - rptr) / 24]
3799 = wptr - rptr;
3800 }
3801
3802 if (wptr != rptr)
3803 memcpy (wptr, rptr, 24);
3804 wptr += 24;
3805 }
3806 rptr += 24;
3807 offset += 24;
3808 }
3809
3810 /* We need to adjust any reloc offsets to point to the
3811 new opd entries. While we're at it, we may as well
3812 remove redundant relocs. */
3813 if (!skip)
3814 {
3815 rel->r_offset += wptr - rptr;
3816 if (write_rel != rel)
3817 memcpy (write_rel, rel, sizeof (*rel));
3818 ++write_rel;
3819 }
3820 }
3821
3822 sec->_cooked_size = wptr - sec->contents;
3823 sec->reloc_count = write_rel - relstart;
3824 }
6cdc0ccc 3825 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 3826 free (relstart);
6cdc0ccc
AM		 3827
3828 if (local_syms != NULL
3829 && symtab_hdr->contents != (unsigned char *) local_syms)
3830 {
3831 if (!info->keep_memory)
3832 free (local_syms);
3833 else
3834 symtab_hdr->contents = (unsigned char *) local_syms;
3835 }
1e2f5b6e
AM		 3836 }
3837
3838 return true;
3839}
3840
65f38f15
AM		 3841/* This is the condition under which ppc64_elf_finish_dynamic_symbol
3842 will be called from elflink.h. If elflink.h doesn't call our
3843 finish_dynamic_symbol routine, we'll need to do something about
3844 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
3845#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
3846 ((DYN) \
3847 && ((INFO)->shared \
3848 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
3849 && ((H)->dynindx != -1 \
3850 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 3851
65f38f15
AM		 3852/* Allocate space in .plt, .got and associated reloc sections for
3853 dynamic relocs. */
5bd4f169
AM		 3854
3855static boolean
65f38f15
AM		 3856allocate_dynrelocs (h, inf)
3857 struct elf_link_hash_entry *h;
3858 PTR inf;
5bd4f169 3859{
65f38f15
AM		 3860 struct bfd_link_info *info;
3861 struct ppc_link_hash_table *htab;
5bd4f169 3862 asection *s;
65f38f15
AM		 3863 struct ppc_link_hash_entry *eh;
3864 struct ppc_dyn_relocs *p;
5bd4f169 3865
e92d460e 3866 if (h->root.type == bfd_link_hash_indirect)
65f38f15 3867 return true;
5bd4f169 3868
e92d460e
AM		 3869 if (h->root.type == bfd_link_hash_warning)
3870 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3871
65f38f15
AM		 3872 info = (struct bfd_link_info *) inf;
3873 htab = ppc_hash_table (info);
5bd4f169 3874
65f38f15 3875 if (htab->elf.dynamic_sections_created
e86ce104
AM		 3876 && h->plt.refcount > 0
3877 && h->dynindx != -1)
5bd4f169 3878 {
e86ce104 3879 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5bd4f169 3880
65f38f15
AM		 3881 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
3882 {
65f38f15
AM		 3883 /* If this is the first .plt entry, make room for the special
3884 first entry. */
3885 s = htab->splt;
5bd4f169 3886 if (s->_raw_size == 0)
65f38f15
AM		 3887 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
3888
3889 h->plt.offset = s->_raw_size;
3890
3891 /* Make room for this entry. */
3892 s->_raw_size += PLT_ENTRY_SIZE;
3893
721956f4 3894 /* Make room for the .glink code. */
5d1634d7
AM		 3895 s = htab->sglink;
3896 if (s->_raw_size == 0)
3897 s->_raw_size += GLINK_CALL_STUB_SIZE;
3898 /* We need bigger stubs past index 32767. */
3899 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
3900 s->_raw_size += 4;
3901 s->_raw_size += 2*4;
65f38f15
AM		 3902
3903 /* We also need to make an entry in the .rela.plt section. */
3904 s = htab->srelplt;
3905 s->_raw_size += sizeof (Elf64_External_Rela);
3906 }
3907 else
3908 {
3909 h->plt.offset = (bfd_vma) -1;
3910 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3911 }
3912 }
3913 else
3914 {
3915 h->plt.offset = (bfd_vma) -1;
3916 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3917 }
3918
3919 if (h->got.refcount > 0)
3920 {
3921 boolean dyn;
3922
3923 /* Make sure this symbol is output as a dynamic symbol.
3924 Undefined weak syms won't yet be marked as dynamic. */
3925 if (h->dynindx == -1
3926 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3927 {
3928 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
3929 return false;
3930 }
3931
3932 s = htab->sgot;
3933 h->got.offset = s->_raw_size;
3934 s->_raw_size += 8;
3935 dyn = htab->elf.dynamic_sections_created;
3936 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
3937 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
3938 }
3939 else
3940 h->got.offset = (bfd_vma) -1;
3941
3942 eh = (struct ppc_link_hash_entry *) h;
3943 if (eh->dyn_relocs == NULL)
3944 return true;
3945
3946 /* In the shared -Bsymbolic case, discard space allocated for
3947 dynamic pc-relative relocs against symbols which turn out to be
3948 defined in regular objects. For the normal shared case, discard
3949 space for relocs that have become local due to symbol visibility
3950 changes. */
3951
3952 if (info->shared)
3953 {
3954 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
3955 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3956 || info->symbolic))
3957 {
3958 struct ppc_dyn_relocs **pp;
3959
3960 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 3961 {
65f38f15
AM		 3962 p->count -= p->pc_count;
3963 p->pc_count = 0;
3964 if (p->count == 0)
3965 *pp = p->next;
3966 else
3967 pp = &p->next;
5bd4f169 3968 }
65f38f15
AM		 3969 }
3970 }
3971 else
3972 {
3973 /* For the non-shared case, discard space for relocs against
3974 symbols which turn out to need copy relocs or are not
3975 dynamic. */
3976
3977 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3978 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3979 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3980 || (htab->elf.dynamic_sections_created
3981 && (h->root.type == bfd_link_hash_undefweak
3982 || h->root.type == bfd_link_hash_undefined))))
3983 {
3984 /* Make sure this symbol is output as a dynamic symbol.
3985 Undefined weak syms won't yet be marked as dynamic. */
3986 if (h->dynindx == -1
3987 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3988 {
ec338859 3989 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
65f38f15
AM		 3990 return false;
3991 }
3992
3993 /* If that succeeded, we know we'll be keeping all the
3994 relocs. */
3995 if (h->dynindx != -1)
3996 goto keep;
3997 }
3998
3999 eh->dyn_relocs = NULL;
4000
ec338859 4001 keep: ;
65f38f15
AM		 4002 }
4003
4004 /* Finally, allocate space. */
4005 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4006 {
4007 asection *sreloc = elf_section_data (p->sec)->sreloc;
4008 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
4009 }
4010
4011 return true;
4012}
4013
4014/* Find any dynamic relocs that apply to read-only sections. */
4015
4016static boolean
4017readonly_dynrelocs (h, inf)
4018 struct elf_link_hash_entry *h;
4019 PTR inf;
4020{
4021 struct ppc_link_hash_entry *eh;
4022 struct ppc_dyn_relocs *p;
4023
e92d460e
AM		 4024 if (h->root.type == bfd_link_hash_warning)
4025 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4026
65f38f15
AM		 4027 eh = (struct ppc_link_hash_entry *) h;
4028 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4029 {
4030 asection *s = p->sec->output_section;
4031
4032 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4033 {
4034 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4035
4036 info->flags |= DF_TEXTREL;
4037
4038 /* Not an error, just cut short the traversal. */
4039 return false;
4040 }
4041 }
4042 return true;
4043}
4044
4045/* Set the sizes of the dynamic sections. */
4046
4047static boolean
4048ppc64_elf_size_dynamic_sections (output_bfd, info)
4049 bfd *output_bfd ATTRIBUTE_UNUSED;
4050 struct bfd_link_info *info;
4051{
4052 struct ppc_link_hash_table *htab;
4053 bfd *dynobj;
4054 asection *s;
4055 boolean relocs;
4056 bfd *ibfd;
4057
4058 htab = ppc_hash_table (info);
4059 dynobj = htab->elf.dynobj;
4060 if (dynobj == NULL)
4061 abort ();
4062
4063 if (htab->elf.dynamic_sections_created)
4064 {
4065 /* Set the contents of the .interp section to the interpreter. */
4066 if (! info->shared)
4067 {
4068 s = bfd_get_section_by_name (dynobj, ".interp");
4069 if (s == NULL)
4070 abort ();
4071 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4072 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4073 }
4074 }
4075
4076 /* Set up .got offsets for local syms, and space for local dynamic
4077 relocs. */
4078 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4079 {
4080 bfd_signed_vma *local_got;
4081 bfd_signed_vma *end_local_got;
4082 bfd_size_type locsymcount;
4083 Elf_Internal_Shdr *symtab_hdr;
4084 asection *srel;
4085
4086 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4087 continue;
4088
4089 for (s = ibfd->sections; s != NULL; s = s->next)
4090 {
ec338859 4091 struct ppc_dyn_relocs *p;
65f38f15 4092
ec338859
AM		 4093 for (p = *((struct ppc_dyn_relocs **)
4094 &elf_section_data (s)->local_dynrel);
4095 p != NULL;
4096 p = p->next)
65f38f15 4097 {
ec338859
AM		 4098 if (!bfd_is_abs_section (p->sec)
4099 && bfd_is_abs_section (p->sec->output_section))
4100 {
4101 /* Input section has been discarded, either because
4102 it is a copy of a linkonce section or due to
4103 linker script /DISCARD/, so we'll be discarding
4104 the relocs too. */
4105 }
248866a8 4106 else if (p->count != 0)
ec338859
AM		 4107 {
4108 srel = elf_section_data (p->sec)->sreloc;
4109 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 4110 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
4111 info->flags |= DF_TEXTREL;
ec338859 4112 }
65f38f15
AM		 4113 }
4114 }
4115
4116 local_got = elf_local_got_refcounts (ibfd);
4117 if (!local_got)
4118 continue;
4119
4120 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4121 locsymcount = symtab_hdr->sh_info;
4122 end_local_got = local_got + locsymcount;
4123 s = htab->sgot;
4124 srel = htab->srelgot;
4125 for (; local_got < end_local_got; ++local_got)
4126 {
4127 if (*local_got > 0)
5bd4f169 4128 {
65f38f15
AM		 4129 *local_got = s->_raw_size;
4130 s->_raw_size += 8;
4131 if (info->shared)
4132 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 4133 }
65f38f15
AM		 4134 else
4135 *local_got = (bfd_vma) -1;
4136 }
4137 }
4138
1e2f5b6e
AM		 4139 if (!edit_opd (output_bfd, info))
4140 return false;
4141
65f38f15
AM		 4142 /* Allocate global sym .plt and .got entries, and space for global
4143 sym dynamic relocs. */
4144 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
4145
4146 /* We now have determined the sizes of the various dynamic sections.
4147 Allocate memory for them. */
4148 relocs = false;
4149 for (s = dynobj->sections; s != NULL; s = s->next)
4150 {
4151 if ((s->flags & SEC_LINKER_CREATED) == 0)
4152 continue;
4153
721956f4
AM		 4154 if (s == htab->sbrlt || s == htab->srelbrlt)
4155 /* These haven't been allocated yet; don't strip. */
4156 continue;
4157 else if (s == htab->splt
4158 || s == htab->sgot
4159 || s == htab->sglink)
65f38f15
AM		 4160 {
4161 /* Strip this section if we don't need it; see the
4162 comment below. */
5bd4f169 4163 }
65f38f15 4164 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 4165 {
4166 if (s->_raw_size == 0)
4167 {
4168 /* If we don't need this section, strip it from the
4169 output file. This is mostly to handle .rela.bss and
4170 .rela.plt. We must create both sections in
4171 create_dynamic_sections, because they must be created
4172 before the linker maps input sections to output
4173 sections. The linker does that before
4174 adjust_dynamic_symbol is called, and it is that
4175 function which decides whether anything needs to go
4176 into these sections. */
5bd4f169
AM		 4177 }
4178 else
4179 {
65f38f15
AM		 4180 if (s != htab->srelplt)
4181 relocs = true;
5bd4f169
AM		 4182
4183 /* We use the reloc_count field as a counter if we need
4184 to copy relocs into the output file. */
4185 s->reloc_count = 0;
4186 }
4187 }
65f38f15 4188 else
5bd4f169
AM		 4189 {
4190 /* It's not one of our sections, so don't allocate space. */
4191 continue;
4192 }
4193
65f38f15 4194 if (s->_raw_size == 0)
5bd4f169
AM		 4195 {
4196 _bfd_strip_section_from_output (info, s);
4197 continue;
4198 }
4199
5f333394
AM		 4200 /* .plt is in the bss section. We don't initialise it. */
4201 if ((s->flags & SEC_LOAD) == 0)
4202 continue;
4203
65f38f15
AM		 4204 /* Allocate memory for the section contents. We use bfd_zalloc
4205 here in case unused entries are not reclaimed before the
4206 section's contents are written out. This should not happen,
4207 but this way if it does, we get a R_PPC64_NONE reloc instead
4208 of garbage. */
721956f4 4209 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
65f38f15 4210 if (s->contents == NULL)
5bd4f169
AM		 4211 return false;
4212 }
4213
e86ce104 4214 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 4215 {
4216 /* Add some entries to the .dynamic section. We fill in the
4217 values later, in ppc64_elf_finish_dynamic_sections, but we
4218 must add the entries now so that we get the correct size for
4219 the .dynamic section. The DT_DEBUG entry is filled in by the
4220 dynamic linker and used by the debugger. */
dc810e39
AM		 4221#define add_dynamic_entry(TAG, VAL) \
4222 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
4223
4224 if (!info->shared)
5bd4f169 4225 {
dc810e39 4226 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 4227 return false;
4228 }
4229
9c07fe7c 4230 if (htab->splt != NULL && htab->splt->_raw_size != 0)
5bd4f169 4231 {
dc810e39
AM		 4232 if (!add_dynamic_entry (DT_PLTGOT, 0)
4233 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4234 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 4235 || !add_dynamic_entry (DT_JMPREL, 0)
4236 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5bd4f169
AM		 4237 return false;
4238 }
4239
19397422
AM		 4240 if (NO_OPD_RELOCS)
4241 {
4242 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
4243 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
4244 return false;
4245 }
4246
5bd4f169
AM		 4247 if (relocs)
4248 {
dc810e39
AM		 4249 if (!add_dynamic_entry (DT_RELA, 0)
4250 || !add_dynamic_entry (DT_RELASZ, 0)
4251 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 4252 return false;
5bd4f169 4253
65f38f15
AM		 4254 /* If any dynamic relocs apply to a read-only section,
4255 then we need a DT_TEXTREL entry. */
248866a8
AM		 4256 if ((info->flags & DF_TEXTREL) == 0)
4257 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
4258 (PTR) info);
5bd4f169 4259
65f38f15 4260 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 4261 {
65f38f15
AM		 4262 if (!add_dynamic_entry (DT_TEXTREL, 0))
4263 return false;
5bd4f169 4264 }
5bd4f169 4265 }
5bd4f169 4266 }
65f38f15 4267#undef add_dynamic_entry
5bd4f169
AM		 4268
4269 return true;
4270}
4271
721956f4 4272/* Determine the type of stub needed, if any, for a call. */
5bd4f169 4273
721956f4
AM		 4274static INLINE enum ppc_stub_type
4275ppc_type_of_stub (input_sec, rel, hash, destination)
4276 asection *input_sec;
4277 const Elf_Internal_Rela *rel;
4278 struct ppc_link_hash_entry **hash;
4279 bfd_vma destination;
5bd4f169 4280{
721956f4
AM		 4281 struct ppc_link_hash_entry *h = *hash;
4282 bfd_vma location;
4283 bfd_vma branch_offset;
4284 bfd_vma max_branch_offset;
4285 unsigned int r_type;
5bd4f169 4286
721956f4
AM		 4287 if (h != NULL)
4288 {
4289 if (h->oh != NULL
4290 && h->oh->plt.offset != (bfd_vma) -1
4291 && h->oh->dynindx != -1)
5bd4f169 4292 {
721956f4
AM		 4293 *hash = (struct ppc_link_hash_entry *) h->oh;
4294 return ppc_stub_plt_call;
5bd4f169
AM		 4295 }
4296
721956f4
AM		 4297 if (h->elf.root.type == bfd_link_hash_undefweak
4298 || h->elf.root.type == bfd_link_hash_undefined)
4299 return ppc_stub_none;
5d1634d7 4300 }
5d1634d7 4301
721956f4
AM		 4302 /* Determine where the call point is. */
4303 location = (input_sec->output_offset
4304 + input_sec->output_section->vma
4305 + rel->r_offset);
5d1634d7 4306
721956f4
AM		 4307 branch_offset = destination - location;
4308 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 4309
721956f4
AM		 4310 /* Determine if a long branch stub is needed. */
4311 max_branch_offset = 1 << 25;
4312 if (r_type != (unsigned int) R_PPC64_REL24)
4313 max_branch_offset = 1 << 15;
5d1634d7 4314
721956f4
AM		 4315 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
4316 /* We need a stub. Figure out whether a long_branch or plt_branch
4317 is needed later. */
4318 return ppc_stub_long_branch;
5d1634d7 4319
721956f4 4320 return ppc_stub_none;
5d1634d7
AM		 4321}
4322
4323/* Build a .plt call stub. */
4324
4325static bfd_byte *
4326build_plt_stub (obfd, p, offset, glink)
4327 bfd *obfd;
4328 bfd_byte *p;
4329 int offset;
4330 int glink;
4331{
4332#define PPC_LO(v) ((v) & 0xffff)
4333#define PPC_HI(v) (((v) >> 16) & 0xffff)
4334#define PPC_HA(v) PPC_HI ((v) + 0x8000)
4335
4336 if (glink)
4337 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
4338 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
4339 if (!glink)
4340 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
4341 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4342 if (PPC_HA (offset + 8) != PPC_HA (offset))
4343 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4344 offset += 8;
4345 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
4346 if (PPC_HA (offset + 8) != PPC_HA (offset))
4347 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4348 offset += 8;
4349 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
4350 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4351 bfd_put_32 (obfd, BCTR, p), p += 4;
4352 return p;
4353}
4354
5d1634d7 4355static boolean
721956f4
AM		 4356ppc_build_one_stub (gen_entry, in_arg)
4357 struct bfd_hash_entry *gen_entry;
4358 PTR in_arg;
5d1634d7 4359{
721956f4
AM		 4360 struct ppc_stub_hash_entry *stub_entry;
4361 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 4362 struct bfd_link_info *info;
4363 struct ppc_link_hash_table *htab;
721956f4
AM		 4364 asection *stub_sec;
4365 bfd *stub_bfd;
4366 bfd_byte *loc;
4367 bfd_byte *p;
4368 unsigned int indx;
4369 bfd_vma off;
4370 int size;
5d1634d7 4371
721956f4
AM		 4372 /* Massage our args to the form they really have. */
4373 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4374 info = (struct bfd_link_info *) in_arg;
5d1634d7 4375
5d1634d7 4376 htab = ppc_hash_table (info);
721956f4 4377 stub_sec = stub_entry->stub_sec;
5d1634d7 4378
721956f4
AM		 4379 /* Make a note of the offset within the stubs for this entry. */
4380 stub_entry->stub_offset = stub_sec->_cooked_size;
4381 loc = stub_sec->contents + stub_entry->stub_offset;
4382
4383 stub_bfd = stub_sec->owner;
4384
4385 switch (stub_entry->stub_type)
5d1634d7 4386 {
721956f4
AM		 4387 case ppc_stub_long_branch:
4388 /* Branches are relative. This is where we are going to. */
4389 off = (stub_entry->target_value
4390 + stub_entry->target_section->output_offset
4391 + stub_entry->target_section->output_section->vma);
5d1634d7 4392
721956f4
AM		 4393 /* And this is where we are coming from. */
4394 off -= (stub_entry->stub_offset
4395 + stub_sec->output_offset
4396 + stub_sec->output_section->vma);
e86ce104 4397
721956f4 4398 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
e86ce104 4399
721956f4
AM		 4400 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
4401 size = 4;
4402 break;
e86ce104 4403
721956f4
AM		 4404 case ppc_stub_plt_branch:
4405 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4406 stub_entry->root.string + 9,
4407 false, false);
4408 if (br_entry == NULL)
4409 {
4410 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
4411 stub_entry->root.string + 9);
4412 htab->stub_error = true;
4413 return false;
4414 }
4415
4416 off = (stub_entry->target_value
4417 + stub_entry->target_section->output_offset
4418 + stub_entry->target_section->output_section->vma);
4419
4420 bfd_put_64 (htab->sbrlt->owner, off,
4421 htab->sbrlt->contents + br_entry->offset);
4422
4423 if (info->shared)
4424 {
4425 /* Create a reloc for the branch lookup table entry. */
4426 Elf_Internal_Rela rela;
4427 Elf64_External_Rela *r;
5d1634d7 4428
721956f4
AM		 4429 rela.r_offset = (br_entry->offset
4430 + htab->sbrlt->output_offset
4431 + htab->sbrlt->output_section->vma);
4432 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4433 rela.r_addend = off;
4434
4435 r = (Elf64_External_Rela *) htab->srelbrlt->contents;
4436 r += htab->srelbrlt->reloc_count++;
4437 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r);
4438 }
4439
4440 off = (br_entry->offset
4441 + htab->sbrlt->output_offset
4442 + htab->sbrlt->output_section->vma
4443 - elf_gp (htab->sbrlt->output_section->owner)
4444 - TOC_BASE_OFF);
4445
4446 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 4447 {
4448 (*_bfd_error_handler)
e86ce104 4449 (_("linkage table error against `%s'"),
721956f4 4450 stub_entry->root.string);
5d1634d7 4451 bfd_set_error (bfd_error_bad_value);
721956f4 4452 htab->stub_error = true;
5d1634d7
AM		 4453 return false;
4454 }
41bd81ab 4455
721956f4
AM		 4456 indx = off;
4457 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
4458 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
4459 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
4460 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
4461 size = 16;
4462 break;
5d1634d7 4463
721956f4 4464 case ppc_stub_plt_call:
5d1634d7 4465 /* Build the .glink lazy link call stub. */
721956f4
AM		 4466 p = htab->sglink->contents + htab->sglink->_cooked_size;
4467 indx = htab->sglink->reloc_count;
5d1634d7
AM		 4468 if (indx < 0x8000)
4469 {
721956f4 4470 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
5d1634d7
AM		 4471 p += 4;
4472 }
4473 else
4474 {
721956f4 4475 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
5d1634d7 4476 p += 4;
721956f4 4477 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
5d1634d7
AM		 4478 p += 4;
4479 }
721956f4
AM		 4480 bfd_put_32 (htab->sglink->owner,
4481 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
5d1634d7 4482 p += 4;
721956f4
AM		 4483 htab->sglink->_cooked_size = p - htab->sglink->contents;
4484 htab->sglink->reloc_count += 1;
4485
c862ae31
AM		 4486 /* Do the best we can for shared libraries built without
4487 exporting ".foo" for each "foo". This can happen when symbol
4488 versioning scripts strip all bar a subset of symbols. */
4489 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
4490 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
4491 {
4492 /* Point the symbol at the stub. There may be multiple stubs,
4493 we don't really care; The main thing is to make this sym
4494 defined somewhere. */
4495 stub_entry->h->oh->root.type = bfd_link_hash_defined;
4496 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
4497 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
4498 }
4499
721956f4
AM		 4500 /* Now build the stub. */
4501 off = stub_entry->h->elf.plt.offset;
4502 if (off >= (bfd_vma) -2)
4503 abort ();
4504
4505 off &= ~ (bfd_vma) 1;
4506 off += (htab->splt->output_offset
4507 + htab->splt->output_section->vma
4508 - elf_gp (htab->splt->output_section->owner)
4509 - TOC_BASE_OFF);
4510
4511 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
4512 {
4513 (*_bfd_error_handler)
4514 (_("linkage table error against `%s'"),
4515 stub_entry->h->elf.root.root.string);
4516 bfd_set_error (bfd_error_bad_value);
4517 htab->stub_error = true;
4518 return false;
4519 }
4520
4521 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
4522 size = p - loc;
4523 break;
4524
4525 default:
4526 BFD_FAIL ();
4527 return false;
4528 }
4529
4530 stub_sec->_cooked_size += size;
4531 return true;
4532}
4533
4534/* As above, but don't actually build the stub. Just bump offset so
4535 we know stub section sizes, and select plt_branch stubs where
4536 long_branch stubs won't do. */
4537
4538static boolean
4539ppc_size_one_stub (gen_entry, in_arg)
4540 struct bfd_hash_entry *gen_entry;
4541 PTR in_arg;
4542{
4543 struct ppc_stub_hash_entry *stub_entry;
4544 struct ppc_link_hash_table *htab;
4545 bfd_vma off;
4546 int size;
4547
4548 /* Massage our args to the form they really have. */
4549 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4550 htab = (struct ppc_link_hash_table *) in_arg;
4551
4552 if (stub_entry->stub_type == ppc_stub_plt_call)
4553 {
4554 off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1;
4555 off += (htab->splt->output_offset
4556 + htab->splt->output_section->vma
4557 - elf_gp (htab->splt->output_section->owner)
4558 - TOC_BASE_OFF);
4559
4560 size = 28;
4561 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
4562 size += 4;
4563 }
4564 else
4565 {
4566 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
4567 stub_entry->stub_type = ppc_stub_long_branch;
4568 size = 4;
4569
4570 off = (stub_entry->target_value
4571 + stub_entry->target_section->output_offset
4572 + stub_entry->target_section->output_section->vma);
4573 off -= (stub_entry->stub_sec->_raw_size
4574 + stub_entry->stub_sec->output_offset
4575 + stub_entry->stub_sec->output_section->vma);
4576
4577 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
4578 {
4579 struct ppc_branch_hash_entry *br_entry;
4580
4581 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4582 stub_entry->root.string + 9,
4583 true, false);
4584 if (br_entry == NULL)
4585 {
4586 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
4587 stub_entry->root.string + 9);
4588 htab->stub_error = true;
4589 return false;
4590 }
4591
4592 if (br_entry->iter != htab->stub_iteration)
4593 {
4594 br_entry->iter = htab->stub_iteration;
4595 br_entry->offset = htab->sbrlt->_raw_size;
4596 htab->sbrlt->_raw_size += 8;
4597 }
4598 stub_entry->stub_type = ppc_stub_plt_branch;
4599 size = 16;
4600 }
4601 }
4602
4603 stub_entry->stub_sec->_raw_size += size;
4604 return true;
4605}
4606
4607/* Set up various things so that we can make a list of input sections
4608 for each output section included in the link. Returns -1 on error,
cedb70c5 4609 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 4610
4611int
4612ppc64_elf_setup_section_lists (output_bfd, info)
4613 bfd *output_bfd;
4614 struct bfd_link_info *info;
4615{
4616 bfd *input_bfd;
721956f4
AM		 4617 int top_id, top_index;
4618 asection *section;
4619 asection **input_list, **list;
4620 bfd_size_type amt;
4621 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4622
805fc799
AM		 4623 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
4624 || htab->sbrlt == NULL)
721956f4
AM		 4625 return 0;
4626
1e2f5b6e
AM		 4627 /* Find the top input section id. */
4628 for (input_bfd = info->input_bfds, top_id = 0;
721956f4
AM		 4629 input_bfd != NULL;
4630 input_bfd = input_bfd->link_next)
4631 {
721956f4
AM		 4632 for (section = input_bfd->sections;
4633 section != NULL;
4634 section = section->next)
4635 {
4636 if (top_id < section->id)
4637 top_id = section->id;
4638 }
4639 }
721956f4
AM		 4640
4641 amt = sizeof (struct map_stub) * (top_id + 1);
4642 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
4643 if (htab->stub_group == NULL)
4644 return -1;
4645
4646 /* We can't use output_bfd->section_count here to find the top output
4647 section index as some sections may have been removed, and
4648 _bfd_strip_section_from_output doesn't renumber the indices. */
4649 for (section = output_bfd->sections, top_index = 0;
4650 section != NULL;
4651 section = section->next)
4652 {
4653 if (top_index < section->index)
4654 top_index = section->index;
4655 }
4656
4657 htab->top_index = top_index;
4658 amt = sizeof (asection *) * (top_index + 1);
4659 input_list = (asection **) bfd_malloc (amt);
4660 htab->input_list = input_list;
4661 if (input_list == NULL)
4662 return -1;
4663
4664 /* For sections we aren't interested in, mark their entries with a
4665 value we can check later. */
4666 list = input_list + top_index;
4667 do
4668 *list = bfd_abs_section_ptr;
4669 while (list-- != input_list);
4670
4671 for (section = output_bfd->sections;
4672 section != NULL;
4673 section = section->next)
4674 {
4675 if ((section->flags & SEC_CODE) != 0)
4676 input_list[section->index] = NULL;
4677 }
4678
4679 return 1;
4680}
4681
4682/* The linker repeatedly calls this function for each input section,
4683 in the order that input sections are linked into output sections.
4684 Build lists of input sections to determine groupings between which
4685 we may insert linker stubs. */
4686
4687void
805fc799 4688ppc64_elf_next_input_section (info, isec)
721956f4
AM		 4689 struct bfd_link_info *info;
4690 asection *isec;
4691{
4692 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4693
805fc799 4694 if (isec->output_section->index <= htab->top_index)
721956f4
AM		 4695 {
4696 asection **list = htab->input_list + isec->output_section->index;
4697 if (*list != bfd_abs_section_ptr)
4698 {
4699 /* Steal the link_sec pointer for our list. */
4700#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
4701 /* This happens to make the list in reverse order,
4702 which is what we want. */
4703 PREV_SEC (isec) = *list;
4704 *list = isec;
4705 }
4706 }
4707}
4708
4709/* See whether we can group stub sections together. Grouping stub
4710 sections may result in fewer stubs. More importantly, we need to
4711 put all .init* and .fini* stubs at the beginning of the .init or
4712 .fini output sections respectively, because glibc splits the
4713 _init and _fini functions into multiple parts. Putting a stub in
4714 the middle of a function is not a good idea. */
4715
4716static void
4717group_sections (htab, stub_group_size, stubs_always_before_branch)
4718 struct ppc_link_hash_table *htab;
4719 bfd_size_type stub_group_size;
4720 boolean stubs_always_before_branch;
4721{
4722 asection **list = htab->input_list + htab->top_index;
4723 do
4724 {
4725 asection *tail = *list;
4726 if (tail == bfd_abs_section_ptr)
4727 continue;
4728 while (tail != NULL)
4729 {
4730 asection *curr;
4731 asection *prev;
4732 bfd_size_type total;
4733
4734 curr = tail;
4735 if (tail->_cooked_size)
4736 total = tail->_cooked_size;
4737 else
4738 total = tail->_raw_size;
4739 while ((prev = PREV_SEC (curr)) != NULL
4740 && ((total += curr->output_offset - prev->output_offset)
4741 < stub_group_size))
4742 curr = prev;
4743
4744 /* OK, the size from the start of CURR to the end is less
4745 than stub_group_size and thus can be handled by one stub
4746 section. (or the tail section is itself larger than
4747 stub_group_size, in which case we may be toast.) We
4748 should really be keeping track of the total size of stubs
4749 added here, as stubs contribute to the final output
4750 section size. That's a little tricky, and this way will
4751 only break if stubs added make the total size more than
4752 2^25, ie. for the default stub_group_size, if stubs total
4753 more than 2834432 bytes, or over 100000 plt call stubs. */
4754 do
4755 {
4756 prev = PREV_SEC (tail);
4757 /* Set up this stub group. */
4758 htab->stub_group[tail->id].link_sec = curr;
4759 }
4760 while (tail != curr && (tail = prev) != NULL);
4761
4762 /* But wait, there's more! Input sections up to stub_group_size
4763 bytes before the stub section can be handled by it too. */
4764 if (!stubs_always_before_branch)
4765 {
4766 total = 0;
4767 while (prev != NULL
4768 && ((total += tail->output_offset - prev->output_offset)
4769 < stub_group_size))
4770 {
4771 tail = prev;
4772 prev = PREV_SEC (tail);
4773 htab->stub_group[tail->id].link_sec = curr;
4774 }
4775 }
4776 tail = prev;
4777 }
4778 }
4779 while (list-- != htab->input_list);
4780 free (htab->input_list);
4781#undef PREV_SEC
4782}
4783
721956f4
AM		 4784/* Determine and set the size of the stub section for a final link.
4785
4786 The basic idea here is to examine all the relocations looking for
4787 PC-relative calls to a target that is unreachable with a "bl"
4788 instruction. */
4789
4790boolean
4791ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
4792 add_stub_section, layout_sections_again)
4793 bfd *output_bfd;
4794 bfd *stub_bfd;
4795 struct bfd_link_info *info;
4796 bfd_signed_vma group_size;
4797 asection * (*add_stub_section) PARAMS ((const char *, asection *));
4798 void (*layout_sections_again) PARAMS ((void));
4799{
4800 bfd_size_type stub_group_size;
4801 boolean stubs_always_before_branch;
721956f4
AM		 4802 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4803
4804 /* Stash our params away. */
4805 htab->stub_bfd = stub_bfd;
4806 htab->add_stub_section = add_stub_section;
4807 htab->layout_sections_again = layout_sections_again;
4808 stubs_always_before_branch = group_size < 0;
4809 if (group_size < 0)
4810 stub_group_size = -group_size;
4811 else
4812 stub_group_size = group_size;
4813 if (stub_group_size == 1)
4814 {
4815 /* Default values. */
4816 stub_group_size = 30720000;
4817 if (htab->has_14bit_branch)
4818 stub_group_size = 30000;
4819 }
4820
4821 group_sections (htab, stub_group_size, stubs_always_before_branch);
4822
721956f4
AM		 4823 while (1)
4824 {
4825 bfd *input_bfd;
4826 unsigned int bfd_indx;
4827 asection *stub_sec;
4828 boolean stub_changed;
4829
4830 htab->stub_iteration += 1;
4831 stub_changed = false;
4832
4833 for (input_bfd = info->input_bfds, bfd_indx = 0;
4834 input_bfd != NULL;
4835 input_bfd = input_bfd->link_next, bfd_indx++)
4836 {
4837 Elf_Internal_Shdr *symtab_hdr;
4838 asection *section;
6cdc0ccc 4839 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 4840
4841 /* We'll need the symbol table in a second. */
4842 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4843 if (symtab_hdr->sh_info == 0)
4844 continue;
4845
721956f4
AM		 4846 /* Walk over each section attached to the input bfd. */
4847 for (section = input_bfd->sections;
4848 section != NULL;
4849 section = section->next)
4850 {
721956f4 4851 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 4852
4853 /* If there aren't any relocs, then there's nothing more
4854 to do. */
4855 if ((section->flags & SEC_RELOC) == 0
4856 || section->reloc_count == 0)
4857 continue;
4858
4859 /* If this section is a link-once section that will be
4860 discarded, then don't create any stubs. */
4861 if (section->output_section == NULL
4862 || section->output_section->owner != output_bfd)
4863 continue;
4864
1e2f5b6e
AM		 4865 /* Get the relocs. */
4866 internal_relocs
4867 = _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
4868 (Elf_Internal_Rela *) NULL,
4869 info->keep_memory);
721956f4 4870 if (internal_relocs == NULL)
1e2f5b6e 4871 goto error_ret_free_local;
721956f4
AM		 4872
4873 /* Now examine each relocation. */
4874 irela = internal_relocs;
4875 irelaend = irela + section->reloc_count;
4876 for (; irela < irelaend; irela++)
4877 {
4878 unsigned int r_type, r_indx;
4879 enum ppc_stub_type stub_type;
4880 struct ppc_stub_hash_entry *stub_entry;
4881 asection *sym_sec;
4882 bfd_vma sym_value;
4883 bfd_vma destination;
4884 struct ppc_link_hash_entry *hash;
4885 char *stub_name;
4886 const asection *id_sec;
4887
4888 r_type = ELF64_R_TYPE (irela->r_info);
4889 r_indx = ELF64_R_SYM (irela->r_info);
4890
4891 if (r_type >= (unsigned int) R_PPC_max)
4892 {
4893 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 4894 goto error_ret_free_internal;
721956f4
AM		 4895 }
4896
4897 /* Only look for stubs on branch instructions. */
4898 if (r_type != (unsigned int) R_PPC64_REL24
4899 && r_type != (unsigned int) R_PPC64_REL14
4900 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
4901 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
4902 continue;
4903
4904 /* Now determine the call target, its name, value,
4905 section. */
4906 sym_sec = NULL;
4907 sym_value = 0;
4908 destination = 0;
4909 hash = NULL;
4910 if (r_indx < symtab_hdr->sh_info)
4911 {
4912 /* It's a local symbol. */
4913 Elf_Internal_Sym *sym;
4914 Elf_Internal_Shdr *hdr;
4915
6cdc0ccc
AM		 4916 if (local_syms == NULL)
4917 {
4918 local_syms
4919 = (Elf_Internal_Sym *) symtab_hdr->contents;
4920 if (local_syms == NULL)
4921 local_syms
4922 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4923 symtab_hdr->sh_info, 0,
4924 NULL, NULL, NULL);
4925 if (local_syms == NULL)
4926 goto error_ret_free_internal;
4927 }
721956f4
AM		 4928 sym = local_syms + r_indx;
4929 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4930 sym_sec = hdr->bfd_section;
4931 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4932 sym_value = sym->st_value;
4933 destination = (sym_value + irela->r_addend
4934 + sym_sec->output_offset
4935 + sym_sec->output_section->vma);
4936 }
4937 else
4938 {
4939 /* It's an external symbol. */
4940 int e_indx;
4941
4942 e_indx = r_indx - symtab_hdr->sh_info;
4943 hash = ((struct ppc_link_hash_entry *)
4944 elf_sym_hashes (input_bfd)[e_indx]);
4945
4946 while (hash->elf.root.type == bfd_link_hash_indirect
4947 || hash->elf.root.type == bfd_link_hash_warning)
4948 hash = ((struct ppc_link_hash_entry *)
4949 hash->elf.root.u.i.link);
4950
4951 if (hash->elf.root.type == bfd_link_hash_defined
4952 || hash->elf.root.type == bfd_link_hash_defweak)
4953 {
4954 sym_sec = hash->elf.root.u.def.section;
4955 sym_value = hash->elf.root.u.def.value;
4956 if (sym_sec->output_section != NULL)
4957 destination = (sym_value + irela->r_addend
4958 + sym_sec->output_offset
4959 + sym_sec->output_section->vma);
4960 }
4961 else if (hash->elf.root.type == bfd_link_hash_undefweak)
4962 ;
4963 else if (hash->elf.root.type == bfd_link_hash_undefined)
4964 ;
4965 else
4966 {
4967 bfd_set_error (bfd_error_bad_value);
4968 goto error_ret_free_internal;
4969 }
4970 }
4971
4972 /* Determine what (if any) linker stub is needed. */
4973 stub_type = ppc_type_of_stub (section, irela, &hash,
4974 destination);
4975 if (stub_type == ppc_stub_none)
4976 continue;
4977
4978 /* Support for grouping stub sections. */
4979 id_sec = htab->stub_group[section->id].link_sec;
4980
4981 /* Get the name of this stub. */
4982 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
4983 if (!stub_name)
4984 goto error_ret_free_internal;
4985
4986 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4987 stub_name, false, false);
4988 if (stub_entry != NULL)
4989 {
4990 /* The proper stub has already been created. */
4991 free (stub_name);
4992 continue;
4993 }
4994
4995 stub_entry = ppc_add_stub (stub_name, section, htab);
4996 if (stub_entry == NULL)
4997 {
4998 free (stub_name);
6cdc0ccc
AM		 4999 error_ret_free_internal:
5000 if (elf_section_data (section)->relocs == NULL)
5001 free (internal_relocs);
5002 error_ret_free_local:
5003 if (local_syms != NULL
5004 && (symtab_hdr->contents
5005 != (unsigned char *) local_syms))
5006 free (local_syms);
5007 return false;
721956f4
AM		 5008 }
5009
5010 stub_entry->target_value = sym_value;
5011 stub_entry->target_section = sym_sec;
5012 stub_entry->stub_type = stub_type;
5013 stub_entry->h = hash;
5014 stub_changed = true;
5015 }
5016
5017 /* We're done with the internal relocs, free them. */
6cdc0ccc 5018 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 5019 free (internal_relocs);
721956f4 5020 }
6cdc0ccc
AM		 5021
5022 if (local_syms != NULL
5023 && symtab_hdr->contents != (unsigned char *) local_syms)
5024 {
5025 if (!info->keep_memory)
5026 free (local_syms);
5027 else
5028 symtab_hdr->contents = (unsigned char *) local_syms;
5029 }
721956f4
AM		 5030 }
5031
5032 if (!stub_changed)
5033 break;
5034
5035 /* OK, we've added some stubs. Find out the new size of the
5036 stub sections. */
5037 for (stub_sec = htab->stub_bfd->sections;
5038 stub_sec != NULL;
5039 stub_sec = stub_sec->next)
5040 {
5041 stub_sec->_raw_size = 0;
5042 stub_sec->_cooked_size = 0;
5043 }
5044 htab->sbrlt->_raw_size = 0;
5045 htab->sbrlt->_cooked_size = 0;
5046
5047 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
5048
5049 /* Ask the linker to do its stuff. */
5050 (*htab->layout_sections_again) ();
5051 }
5052
afbe61cf
AM		 5053 /* It would be nice to strip .branch_lt from the output if the
5054 section is empty, but it's too late. If we strip sections here,
5055 the dynamic symbol table is corrupted since the section symbol
5056 for the stripped section isn't written. */
721956f4 5057
6cdc0ccc 5058 return true;
721956f4
AM		 5059}
5060
5061/* Called after we have determined section placement. If sections
805fc799 5062 move, we'll be called again. Provide a value for TOCstart. */
721956f4 5063
805fc799
AM		 5064bfd_vma
5065ppc64_elf_toc (obfd)
5d1634d7 5066 bfd *obfd;
721956f4 5067{
805fc799
AM		 5068 asection *s;
5069 bfd_vma TOCstart;
721956f4 5070
805fc799
AM		 5071 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
5072 order. The TOC starts where the first of these sections starts. */
5073 s = bfd_get_section_by_name (obfd, ".got");
5074 if (s == NULL)
5075 s = bfd_get_section_by_name (obfd, ".toc");
5076 if (s == NULL)
5077 s = bfd_get_section_by_name (obfd, ".tocbss");
5078 if (s == NULL)
5079 s = bfd_get_section_by_name (obfd, ".plt");
5080 if (s == NULL)
5081 {
5082 /* This may happen for
5083 o references to TOC base (SYM@toc / TOC[tc0]) without a
5084 .toc directive
5085 o bad linker script
5086 o --gc-sections and empty TOC sections
5087
5088 FIXME: Warn user? */
5089
5090 /* Look for a likely section. We probably won't even be
5091 using TOCstart. */
5092 for (s = obfd->sections; s != NULL; s = s->next)
5093 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
5094 == (SEC_ALLOC | SEC_SMALL_DATA))
5095 break;
721956f4 5096 if (s == NULL)
805fc799
AM		 5097 for (s = obfd->sections; s != NULL; s = s->next)
5098 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
5099 == (SEC_ALLOC | SEC_SMALL_DATA))
5100 break;
721956f4 5101 if (s == NULL)
805fc799
AM		 5102 for (s = obfd->sections; s != NULL; s = s->next)
5103 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
5104 break;
721956f4 5105 if (s == NULL)
805fc799
AM		 5106 for (s = obfd->sections; s != NULL; s = s->next)
5107 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
5108 break;
5109 }
721956f4 5110
805fc799
AM		 5111 TOCstart = 0;
5112 if (s != NULL)
5113 TOCstart = s->output_section->vma + s->output_offset;
721956f4 5114
805fc799 5115 return TOCstart;
721956f4
AM		 5116}
5117
5118/* Build all the stubs associated with the current output file.
5119 The stubs are kept in a hash table attached to the main linker
5120 hash table. This function is called via gldelf64ppc_finish. */
5121
5122boolean
5123ppc64_elf_build_stubs (info)
5124 struct bfd_link_info *info;
5d1634d7
AM		 5125{
5126 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 5127 asection *stub_sec;
5d1634d7
AM		 5128 bfd_vma plt_r2;
5129 bfd_byte *p;
5130
721956f4
AM		 5131 for (stub_sec = htab->stub_bfd->sections;
5132 stub_sec != NULL;
5133 stub_sec = stub_sec->next)
5134 {
5135 bfd_size_type size;
5136
5137 /* Allocate memory to hold the linker stubs. */
5138 size = stub_sec->_raw_size;
5139 if (size != 0)
5140 {
5141 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
5142 if (stub_sec->contents == NULL)
5143 return false;
5144 }
5145 stub_sec->_cooked_size = 0;
5146 }
5d1634d7 5147
721956f4 5148 if (htab->splt != NULL)
5d1634d7 5149 {
721956f4
AM		 5150 /* Build the .glink plt call stub. */
5151 plt_r2 = (htab->splt->output_offset
5152 + htab->splt->output_section->vma
5153 - elf_gp (htab->splt->output_section->owner)
5154 - TOC_BASE_OFF);
5155 p = htab->sglink->contents;
5156 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
5157 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
5158 {
5159 bfd_put_32 (htab->sglink->owner, NOP, p);
5160 p += 4;
5161 }
5162 htab->sglink->_cooked_size = p - htab->sglink->contents;
5163
5164 /* Use reloc_count to count entries. */
5165 htab->sglink->reloc_count = 0;
5d1634d7 5166 }
5d1634d7 5167
721956f4
AM		 5168 if (htab->sbrlt->_raw_size != 0)
5169 {
5170 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
5171 htab->sbrlt->_raw_size);
5172 if (htab->sbrlt->contents == NULL)
5173 return false;
5174 }
5d1634d7 5175
721956f4
AM		 5176 /* Build the stubs as directed by the stub hash table. */
5177 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7
AM		 5178 htab->sglink->reloc_count = 0;
5179
721956f4
AM		 5180 for (stub_sec = htab->stub_bfd->sections;
5181 stub_sec != NULL;
5182 stub_sec = stub_sec->next)
5183 {
5184 if (stub_sec->_raw_size != stub_sec->_cooked_size)
5185 break;
5186 }
5d1634d7 5187
721956f4 5188 if (stub_sec != NULL
5d1634d7
AM		 5189 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
5190 {
721956f4
AM		 5191 htab->stub_error = true;
5192 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 5193 }
721956f4
AM		 5194
5195 return !htab->stub_error;
5bd4f169
AM		 5196}
5197
5bd4f169
AM		 5198/* The RELOCATE_SECTION function is called by the ELF backend linker
5199 to handle the relocations for a section.
5200
5201 The relocs are always passed as Rela structures; if the section
5202 actually uses Rel structures, the r_addend field will always be
5203 zero.
5204
5205 This function is responsible for adjust the section contents as
5206 necessary, and (if using Rela relocs and generating a
5207 relocateable output file) adjusting the reloc addend as
5208 necessary.
5209
5210 This function does not have to worry about setting the reloc
5211 address or the reloc symbol index.
5212
5213 LOCAL_SYMS is a pointer to the swapped in local symbols.
5214
5215 LOCAL_SECTIONS is an array giving the section in the input file
5216 corresponding to the st_shndx field of each local symbol.
5217
5218 The global hash table entry for the global symbols can be found
5219 via elf_sym_hashes (input_bfd).
5220
5221 When generating relocateable output, this function must handle
5222 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5223 going to be the section symbol corresponding to the output
5224 section, which means that the addend must be adjusted
5225 accordingly. */
5226
5227static boolean
5228ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
5229 contents, relocs, local_syms, local_sections)
5230 bfd *output_bfd;
5231 struct bfd_link_info *info;
5232 bfd *input_bfd;
5233 asection *input_section;
5234 bfd_byte *contents;
5235 Elf_Internal_Rela *relocs;
5236 Elf_Internal_Sym *local_syms;
5237 asection **local_sections;
5238{
65f38f15 5239 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5240 Elf_Internal_Shdr *symtab_hdr;
5241 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5242 Elf_Internal_Rela *rel;
5243 Elf_Internal_Rela *relend;
5bd4f169
AM		 5244 bfd_vma *local_got_offsets;
5245 bfd_vma TOCstart;
5246 boolean ret = true;
41bd81ab 5247 boolean is_opd;
96e0dda4
AM		 5248 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
5249 boolean is_power4 = false;
5bd4f169 5250
b491616a
AM		 5251 if (info->relocateable)
5252 return true;
5253
65f38f15 5254 /* Initialize howto table if needed. */
5bd4f169 5255 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 5256 ppc_howto_init ();
5257
65f38f15 5258 htab = ppc_hash_table (info);
5bd4f169 5259 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 5260 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 5261 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5262 sym_hashes = elf_sym_hashes (input_bfd);
1e2f5b6e 5263 is_opd = elf_section_data (input_section)->tdata != NULL;
65f38f15 5264
5bd4f169
AM		 5265 rel = relocs;
5266 relend = relocs + input_section->reloc_count;
5267 for (; rel < relend; rel++)
5268 {
5269 enum elf_ppc_reloc_type r_type;
5270 bfd_vma offset;
5271 bfd_vma addend;
5272 bfd_reloc_status_type r;
5273 Elf_Internal_Sym *sym;
5274 asection *sec;
5275 struct elf_link_hash_entry *h;
721956f4 5276 struct elf_link_hash_entry *fdh;
5bd4f169 5277 const char *sym_name;
5bd4f169
AM		 5278 unsigned long r_symndx;
5279 bfd_vma relocation;
65f38f15 5280 boolean unresolved_reloc;
ef60b7ff 5281 boolean warned;
dc810e39 5282 long insn;
721956f4
AM		 5283 struct ppc_stub_hash_entry *stub_entry;
5284 bfd_vma max_br_offset;
5285 bfd_vma from;
5bd4f169
AM		 5286
5287 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169 5288 r_symndx = ELF64_R_SYM (rel->r_info);
65f38f15
AM		 5289 offset = rel->r_offset;
5290 addend = rel->r_addend;
5291 r = bfd_reloc_other;
5292 sym = (Elf_Internal_Sym *) 0;
5293 sec = (asection *) 0;
5294 h = (struct elf_link_hash_entry *) 0;
5295 sym_name = (const char *) 0;
5296 unresolved_reloc = false;
ef60b7ff 5297 warned = false;
65f38f15 5298
5bd4f169
AM		 5299 if (r_type == R_PPC64_TOC)
5300 {
5301 /* Relocation value is TOC base. Symbol is ignored. */
5302 relocation = TOCstart + TOC_BASE_OFF;
5303 }
5304 else if (r_symndx < symtab_hdr->sh_info)
5305 {
5306 /* It's a local symbol. */
5307 sym = local_syms + r_symndx;
5308 sec = local_sections[r_symndx];
5309 sym_name = "<local symbol>";
5310
f8df10f4 5311 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
f46c2da6
AM		 5312 /* rel may have changed, update our copy of addend. */
5313 addend = rel->r_addend;
1e2f5b6e
AM		 5314
5315 if (elf_section_data (sec) != NULL)
5316 {
5317 long *opd_sym_adjust;
5318
5319 opd_sym_adjust = (long *) elf_section_data (sec)->tdata;
5320 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
5321 relocation += opd_sym_adjust[sym->st_value / 24];
5322 }
5bd4f169
AM		 5323 }
5324 else
5325 {
5326 /* It's a global symbol. */
5327 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5328 while (h->root.type == bfd_link_hash_indirect
5329 || h->root.type == bfd_link_hash_warning)
5330 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5331 sym_name = h->root.root.string;
65f38f15 5332 relocation = 0;
5bd4f169
AM		 5333 if (h->root.type == bfd_link_hash_defined
5334 || h->root.type == bfd_link_hash_defweak)
5335 {
5336 sec = h->root.u.def.section;
65f38f15
AM		 5337 if (sec->output_section == NULL)
5338 /* Set a flag that will be cleared later if we find a
5339 relocation value for this symbol. output_section
5340 is typically NULL for symbols satisfied by a shared
5341 library. */
5342 unresolved_reloc = true;
5bd4f169
AM		 5343 else
5344 relocation = (h->root.u.def.value
5345 + sec->output_section->vma
5346 + sec->output_offset);
5347 }
5348 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 5349 ;
671bae9c 5350 else if (info->shared
65f38f15
AM		 5351 && (!info->symbolic || info->allow_shlib_undefined)
5352 && !info->no_undefined
5353 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5354 ;
5bd4f169
AM		 5355 else
5356 {
5357 if (! ((*info->callbacks->undefined_symbol)
5358 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 5359 offset, (!info->shared
5360 || info->no_undefined
5361 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169 5362 return false;
ef60b7ff 5363 warned = true;
5bd4f169
AM		 5364 }
5365 }
5366
65f38f15 5367 /* First handle relocations that tweak non-addend part of insn. */
86c76c7b 5368 insn = 0;
65f38f15 5369 switch (r_type)
5bd4f169
AM		 5370 {
5371 default:
65f38f15 5372 break;
5bd4f169 5373
65f38f15
AM		 5374 /* Branch taken prediction relocations. */
5375 case R_PPC64_ADDR14_BRTAKEN:
5376 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 5377 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
5378 /* Fall thru. */
65f38f15 5379
86c76c7b 5380 /* Branch not taken prediction relocations. */
65f38f15
AM		 5381 case R_PPC64_ADDR14_BRNTAKEN:
5382 case R_PPC64_REL14_BRNTAKEN:
86c76c7b 5383 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
96e0dda4
AM		 5384 if (is_power4)
5385 {
5386 /* Set 'a' bit. This is 0b00010 in BO field for branch
5387 on CR(BI) insns (BO == 001at or 011at), and 0b01000
5388 for branch on CTR insns (BO == 1a00t or 1a01t). */
5389 if ((insn & (0x14 << 21)) == (0x04 << 21))
5390 insn |= 0x02 << 21;
5391 else if ((insn & (0x14 << 21)) == (0x10 << 21))
5392 insn |= 0x08 << 21;
5393 else
5394 break;
5395 }
65f38f15 5396 else
96e0dda4 5397 {
805fc799
AM		 5398 from = (offset
5399 + input_section->output_offset
5400 + input_section->output_section->vma);
5401
96e0dda4 5402 /* Invert 'y' bit if not the default. */
805fc799 5403 if ((bfd_signed_vma) (relocation + addend - from) < 0)
96e0dda4
AM		 5404 insn ^= 0x01 << 21;
5405 }
86c76c7b 5406
65f38f15
AM		 5407 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
5408 break;
5bd4f169 5409
65f38f15 5410 case R_PPC64_REL24:
721956f4
AM		 5411 /* A REL24 branching to a linkage function is followed by a
5412 nop. We replace the nop with a ld in order to restore
5413 the TOC base pointer. Only calls to shared objects need
5414 to alter the TOC base. These are recognized by their
5415 need for a PLT entry. */
5bd4f169 5416 if (h != NULL
721956f4
AM		 5417 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
5418 && fdh->plt.offset != (bfd_vma) -1
5419 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
5420 rel, htab)) != NULL)
41bd81ab 5421 {
721956f4
AM		 5422 boolean can_plt_call = 0;
5423
41bd81ab
AM		 5424 if (offset + 8 <= input_section->_cooked_size)
5425 {
721956f4
AM		 5426 insn = bfd_get_32 (input_bfd, contents + offset + 4);
5427 if (insn == NOP
5428 || insn == CROR_151515 || insn == CROR_313131)
41bd81ab 5429 {
721956f4
AM		 5430 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
5431 contents + offset + 4);
5432 can_plt_call = 1;
41bd81ab 5433 }
5bd4f169 5434 }
721956f4
AM		 5435
5436 if (!can_plt_call)
5437 {
5438 /* If this is a plain branch rather than a branch
5439 and link, don't require a nop. */
5440 insn = bfd_get_32 (input_bfd, contents + offset);
5441 if ((insn & 1) == 0)
5442 can_plt_call = 1;
5443 }
5444
5445 if (can_plt_call)
5446 {
5447 relocation = (stub_entry->stub_offset
5448 + stub_entry->stub_sec->output_offset
5449 + stub_entry->stub_sec->output_section->vma);
5450 addend = 0;
5451 unresolved_reloc = false;
5452 }
5bd4f169 5453 }
e86ce104
AM		 5454
5455 if (h != NULL
5456 && h->root.type == bfd_link_hash_undefweak
721956f4
AM		 5457 && relocation == 0
5458 && addend == 0)
e86ce104 5459 {
721956f4
AM		 5460 /* Tweak calls to undefined weak functions to point at a
5461 blr. We can thus call a weak function without first
5462 checking whether the function is defined. We have a
5463 blr at the end of .sfpr. */
805fc799 5464 BFD_ASSERT (htab->sfpr->_raw_size != 0);
721956f4
AM		 5465 relocation = (htab->sfpr->_raw_size - 4
5466 + htab->sfpr->output_offset
5467 + htab->sfpr->output_section->vma);
5468 from = (offset
5469 + input_section->output_offset
5470 + input_section->output_section->vma);
805fc799 5471
721956f4
AM		 5472 /* But let's not be silly about it. If the blr isn't in
5473 reach, just go to the next instruction. */
805fc799
AM		 5474 if (relocation - from + (1 << 25) >= (1 << 26)
5475 || htab->sfpr->_raw_size == 0)
721956f4 5476 relocation = from + 4;
e86ce104 5477 }
65f38f15
AM		 5478 break;
5479 }
5bd4f169 5480
65f38f15
AM		 5481 /* Set `addend'. */
5482 switch (r_type)
5483 {
5484 default:
5485 (*_bfd_error_handler)
5486 (_("%s: unknown relocation type %d for symbol %s"),
5487 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 5488
65f38f15
AM		 5489 bfd_set_error (bfd_error_bad_value);
5490 ret = false;
5491 continue;
5bd4f169 5492
65f38f15
AM		 5493 case R_PPC64_NONE:
5494 case R_PPC_GNU_VTINHERIT:
5495 case R_PPC_GNU_VTENTRY:
5496 continue;
5bd4f169
AM		 5497
5498 /* GOT16 relocations. Like an ADDR16 using the symbol's
5499 address in the GOT as relocation value instead of the
5500 symbols value itself. Also, create a GOT entry for the
5501 symbol and put the symbol value there. */
65f38f15
AM		 5502 case R_PPC64_GOT16:
5503 case R_PPC64_GOT16_LO:
5504 case R_PPC64_GOT16_HI:
5505 case R_PPC64_GOT16_HA:
5506 case R_PPC64_GOT16_DS:
5507 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 5508 {
5509 /* Relocation is to the entry for this symbol in the global
5510 offset table. */
5511 bfd_vma off;
65f38f15
AM		 5512
5513 if (htab->sgot == NULL)
5514 abort ();
5bd4f169
AM		 5515
5516 if (h != NULL)
5517 {
65f38f15 5518 boolean dyn;
5bd4f169 5519
65f38f15
AM		 5520 off = h->got.offset;
5521 dyn = htab->elf.dynamic_sections_created;
5522 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 5523 || (info->shared
65f38f15
AM		 5524 && (info->symbolic
5525 || h->dynindx == -1
5526 || (h->elf_link_hash_flags
5527 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 5528 && (h->elf_link_hash_flags
5529 & ELF_LINK_HASH_DEF_REGULAR)))
5530 {
5531 /* This is actually a static link, or it is a
5532 -Bsymbolic link and the symbol is defined
65f38f15
AM		 5533 locally, or the symbol was forced to be local
5534 because of a version file. We must initialize
5535 this entry in the global offset table. Since the
5536 offset must always be a multiple of 8, we use the
5537 least significant bit to record whether we have
5bd4f169
AM		 5538 initialized it already.
5539
65f38f15 5540 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 5541 relocation entry to initialize the value. This
5542 is done in the finish_dynamic_symbol routine. */
5543 if ((off & 1) != 0)
5544 off &= ~1;
5545 else
5546 {
5547 bfd_put_64 (output_bfd, relocation,
65f38f15 5548 htab->sgot->contents + off);
5bd4f169
AM		 5549 h->got.offset |= 1;
5550 }
5551 }
65f38f15
AM		 5552 else
5553 unresolved_reloc = false;
5bd4f169
AM		 5554 }
5555 else
5556 {
65f38f15
AM		 5557 if (local_got_offsets == NULL)
5558 abort ();
5bd4f169
AM		 5559
5560 off = local_got_offsets[r_symndx];
5561
65f38f15 5562 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 5563 the least significant bit to record whether we have
5564 already processed this entry. */
5565 if ((off & 1) != 0)
5566 off &= ~1;
5567 else
5568 {
65f38f15
AM		 5569 bfd_put_64 (output_bfd, relocation,
5570 htab->sgot->contents + off);
5bd4f169
AM		 5571
5572 if (info->shared)
5573 {
5bd4f169 5574 Elf_Internal_Rela outrel;
65f38f15 5575 Elf64_External_Rela *loc;
5bd4f169
AM		 5576
5577 /* We need to generate a R_PPC64_RELATIVE reloc
5578 for the dynamic linker. */
65f38f15
AM		 5579 outrel.r_offset = (htab->sgot->output_section->vma
5580 + htab->sgot->output_offset
5bd4f169
AM		 5581 + off);
5582 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5583 outrel.r_addend = relocation;
65f38f15
AM		 5584 loc = (Elf64_External_Rela *) htab->srelgot->contents;
5585 loc += htab->srelgot->reloc_count++;
5586 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 5587 }
5588
5589 local_got_offsets[r_symndx] |= 1;
5590 }
5591 }
5592
65f38f15
AM		 5593 if (off >= (bfd_vma) -2)
5594 abort ();
5595
5596 relocation = htab->sgot->output_offset + off;
5597
5bd4f169
AM		 5598 /* TOC base (r2) is TOC start plus 0x8000. */
5599 addend -= TOC_BASE_OFF;
5bd4f169 5600 }
65f38f15
AM		 5601 break;
5602
5603 case R_PPC64_PLT16_HA:
5604 case R_PPC64_PLT16_HI:
5605 case R_PPC64_PLT16_LO:
5606 case R_PPC64_PLT32:
5607 case R_PPC64_PLT64:
5608 /* Relocation is to the entry for this symbol in the
5609 procedure linkage table. */
5610
5611 /* Resolve a PLT reloc against a local symbol directly,
5612 without using the procedure linkage table. */
5613 if (h == NULL)
5614 break;
5615
5616 if (h->plt.offset == (bfd_vma) -1
5617 || htab->splt == NULL)
5618 {
5619 /* We didn't make a PLT entry for this symbol. This
5620 happens when statically linking PIC code, or when
5621 using -Bsymbolic. */
5622 break;
5623 }
5624
5625 relocation = (htab->splt->output_section->vma
5626 + htab->splt->output_offset
5627 + h->plt.offset);
5628 unresolved_reloc = false;
5629 break;
5bd4f169
AM		 5630
5631 /* TOC16 relocs. We want the offset relative to the TOC base,
5632 which is the address of the start of the TOC plus 0x8000.
5633 The TOC consists of sections .got, .toc, .tocbss, and .plt,
5634 in this order. */
65f38f15
AM		 5635 case R_PPC64_TOC16:
5636 case R_PPC64_TOC16_LO:
5637 case R_PPC64_TOC16_HI:
5638 case R_PPC64_TOC16_DS:
5639 case R_PPC64_TOC16_LO_DS:
5640 case R_PPC64_TOC16_HA:
5bd4f169 5641 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 5642 break;
5643
5644 /* Relocate against the beginning of the section. */
65f38f15
AM		 5645 case R_PPC64_SECTOFF:
5646 case R_PPC64_SECTOFF_LO:
5647 case R_PPC64_SECTOFF_HI:
5648 case R_PPC64_SECTOFF_DS:
5649 case R_PPC64_SECTOFF_LO_DS:
5650 case R_PPC64_SECTOFF_HA:
5651 if (sec != (asection *) 0)
5652 addend -= sec->output_section->vma;
5bd4f169
AM		 5653 break;
5654
721956f4
AM		 5655 case R_PPC64_REL14:
5656 case R_PPC64_REL14_BRNTAKEN:
5657 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 5658 case R_PPC64_REL24:
5659 break;
5660
65f38f15
AM		 5661 /* Relocations that may need to be propagated if this is a
5662 dynamic object. */
65f38f15
AM		 5663 case R_PPC64_REL32:
5664 case R_PPC64_REL64:
5665 case R_PPC64_ADDR14:
5666 case R_PPC64_ADDR14_BRNTAKEN:
5667 case R_PPC64_ADDR14_BRTAKEN:
5668 case R_PPC64_ADDR16:
5669 case R_PPC64_ADDR16_DS:
5670 case R_PPC64_ADDR16_HA:
5671 case R_PPC64_ADDR16_HI:
5672 case R_PPC64_ADDR16_HIGHER:
5673 case R_PPC64_ADDR16_HIGHERA:
5674 case R_PPC64_ADDR16_HIGHEST:
5675 case R_PPC64_ADDR16_HIGHESTA:
5676 case R_PPC64_ADDR16_LO:
5677 case R_PPC64_ADDR16_LO_DS:
5678 case R_PPC64_ADDR24:
5679 case R_PPC64_ADDR30:
5680 case R_PPC64_ADDR32:
5681 case R_PPC64_ADDR64:
5682 case R_PPC64_UADDR16:
5683 case R_PPC64_UADDR32:
5684 case R_PPC64_UADDR64:
ec338859
AM		 5685 /* r_symndx will be zero only for relocs against symbols
5686 from removed linkonce sections, or sections discarded by
5687 a linker script. */
5d1634d7
AM		 5688 if (r_symndx == 0)
5689 break;
5690 /* Fall thru. */
5691
5692 case R_PPC64_TOC:
5693 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 5694 break;
5695
41bd81ab
AM		 5696 if (NO_OPD_RELOCS && is_opd)
5697 break;
5698
65f38f15 5699 if ((info->shared
65f38f15
AM		 5700 && (IS_ABSOLUTE_RELOC (r_type)
5701 || (h != NULL
5702 && h->dynindx != -1
5703 && (! info->symbolic
5704 || (h->elf_link_hash_flags
5705 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
5706 || (!info->shared
65f38f15
AM		 5707 && h != NULL
5708 && h->dynindx != -1
5709 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5710 && (((h->elf_link_hash_flags
5711 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5712 && (h->elf_link_hash_flags
5713 & ELF_LINK_HASH_DEF_REGULAR) == 0)
5714 || h->root.type == bfd_link_hash_undefweak
5715 || h->root.type == bfd_link_hash_undefined)))
5716 {
5717 Elf_Internal_Rela outrel;
5718 boolean skip, relocate;
5719 asection *sreloc;
5720 Elf64_External_Rela *loc;
5721
5722 /* When generating a dynamic object, these relocations
5723 are copied into the output file to be resolved at run
5724 time. */
5725
5726 skip = false;
0bb2d96a 5727 relocate = false;
65f38f15 5728
c629eae0
JJ		 5729 outrel.r_offset =
5730 _bfd_elf_section_offset (output_bfd, info, input_section,
5731 rel->r_offset);
5732 if (outrel.r_offset == (bfd_vma) -1)
5733 skip = true;
0bb2d96a
JJ		 5734 else if (outrel.r_offset == (bfd_vma) -2)
5735 skip = true, relocate = true;
65f38f15
AM		 5736 outrel.r_offset += (input_section->output_section->vma
5737 + input_section->output_offset);
5738 outrel.r_addend = addend;
5739
5740 if (skip)
0bb2d96a 5741 memset (&outrel, 0, sizeof outrel);
65f38f15
AM		 5742 else if (h != NULL
5743 && h->dynindx != -1
41bd81ab 5744 && !is_opd
65f38f15
AM		 5745 && (!IS_ABSOLUTE_RELOC (r_type)
5746 || !info->shared
5747 || !info->symbolic
5748 || (h->elf_link_hash_flags
5749 & ELF_LINK_HASH_DEF_REGULAR) == 0))
0bb2d96a 5750 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
65f38f15
AM		 5751 else
5752 {
41bd81ab
AM		 5753 /* This symbol is local, or marked to become local,
5754 or this is an opd section reloc which must point
5755 at a local function. */
65f38f15
AM		 5756 outrel.r_addend += relocation;
5757 relocate = true;
e86ce104 5758 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 5759 {
3fad3c7c 5760 if (is_opd && h != NULL)
afbe61cf
AM		 5761 {
5762 /* Lie about opd entries. This case occurs
5763 when building shared libraries and we
5764 reference a function in another shared
3fad3c7c
AM		 5765 lib. The same thing happens for a weak
5766 definition in an application that's
5767 overridden by a strong definition in a
5768 shared lib. (I believe this is a generic
5769 bug in binutils handling of weak syms.)
5770 In these cases we won't use the opd
1e2f5b6e 5771 entry in this lib. */
afbe61cf
AM		 5772 unresolved_reloc = false;
5773 }
65f38f15
AM		 5774 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5775 }
5776 else
5777 {
5778 long indx = 0;
5779
41bd81ab 5780 if (bfd_is_abs_section (sec))
65f38f15
AM		 5781 ;
5782 else if (sec == NULL || sec->owner == NULL)
5783 {
5784 bfd_set_error (bfd_error_bad_value);
5785 return false;
5786 }
5787 else
5788 {
5789 asection *osec;
5790
5791 osec = sec->output_section;
5792 indx = elf_section_data (osec)->dynindx;
5793
5794 /* We are turning this relocation into one
5795 against a section symbol, so subtract out
5796 the output section's address but not the
5797 offset of the input section in the output
5798 section. */
5799 outrel.r_addend -= osec->vma;
5800 }
5801
5802 outrel.r_info = ELF64_R_INFO (indx, r_type);
5803 }
5804 }
5805
5806 sreloc = elf_section_data (input_section)->sreloc;
5807 if (sreloc == NULL)
5808 abort ();
5809
5810 loc = (Elf64_External_Rela *) sreloc->contents;
5811 loc += sreloc->reloc_count++;
5812 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5813
5814 /* If this reloc is against an external symbol, it will
5815 be computed at runtime, so there's no need to do
5816 anything now. */
5817 if (! relocate)
5818 continue;
5819 }
5bd4f169
AM		 5820 break;
5821
65f38f15
AM		 5822 case R_PPC64_COPY:
5823 case R_PPC64_GLOB_DAT:
5824 case R_PPC64_JMP_SLOT:
5825 case R_PPC64_RELATIVE:
5826 /* We shouldn't ever see these dynamic relocs in relocatable
5827 files. */
5828 /* Fall thru */
5829
5830 case R_PPC64_PLTGOT16:
5831 case R_PPC64_PLTGOT16_DS:
5832 case R_PPC64_PLTGOT16_HA:
5833 case R_PPC64_PLTGOT16_HI:
5834 case R_PPC64_PLTGOT16_LO:
5835 case R_PPC64_PLTGOT16_LO_DS:
5836 case R_PPC64_PLTREL32:
5837 case R_PPC64_PLTREL64:
5838 /* These ones haven't been implemented yet. */
5839
5840 (*_bfd_error_handler)
5841 (_("%s: Relocation %s is not supported for symbol %s."),
5842 bfd_archive_filename (input_bfd),
5843 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 5844
5845 bfd_set_error (bfd_error_invalid_operation);
5846 ret = false;
5847 continue;
65f38f15 5848 }
5bd4f169 5849
65f38f15
AM		 5850 /* Do any further special processing. */
5851 switch (r_type)
5852 {
5853 default:
5854 break;
5855
5856 case R_PPC64_ADDR16_HA:
5857 case R_PPC64_ADDR16_HIGHERA:
5858 case R_PPC64_ADDR16_HIGHESTA:
5859 case R_PPC64_PLT16_HA:
5860 case R_PPC64_TOC16_HA:
5861 case R_PPC64_SECTOFF_HA:
5862 /* It's just possible that this symbol is a weak symbol
5863 that's not actually defined anywhere. In that case,
5864 'sec' would be NULL, and we should leave the symbol
5865 alone (it will be set to zero elsewhere in the link). */
5866 if (sec != NULL)
5867 /* Add 0x10000 if sign bit in 0:15 is set. */
5868 addend += ((relocation + addend) & 0x8000) << 1;
5869 break;
5870
5871 case R_PPC64_ADDR16_DS:
5872 case R_PPC64_ADDR16_LO_DS:
5873 case R_PPC64_GOT16_DS:
5874 case R_PPC64_GOT16_LO_DS:
5875 case R_PPC64_PLT16_LO_DS:
5876 case R_PPC64_SECTOFF_DS:
5877 case R_PPC64_SECTOFF_LO_DS:
5878 case R_PPC64_TOC16_DS:
5879 case R_PPC64_TOC16_LO_DS:
5880 case R_PPC64_PLTGOT16_DS:
5881 case R_PPC64_PLTGOT16_LO_DS:
5882 if (((relocation + addend) & 3) != 0)
5883 {
5884 (*_bfd_error_handler)
5885 (_("%s: error: relocation %s not a multiple of 4"),
5886 bfd_archive_filename (input_bfd),
5887 ppc64_elf_howto_table[(int) r_type]->name);
5888 bfd_set_error (bfd_error_bad_value);
5889 ret = false;
5890 continue;
5891 }
5892 break;
721956f4
AM		 5893
5894 case R_PPC64_REL14:
5895 case R_PPC64_REL14_BRNTAKEN:
5896 case R_PPC64_REL14_BRTAKEN:
5897 max_br_offset = 1 << 15;
5898 goto branch_check;
5899
5900 case R_PPC64_REL24:
5901 max_br_offset = 1 << 25;
5902
5903 branch_check:
5904 /* If the branch is out of reach, then redirect the
5905 call to the local stub for this function. */
5906 from = (offset
5907 + input_section->output_offset
5908 + input_section->output_section->vma);
5909 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
5910 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
5911 rel, htab)) != NULL)
5912 {
5913 /* Munge up the value and addend so that we call the stub
5914 rather than the procedure directly. */
5915 relocation = (stub_entry->stub_offset
5916 + stub_entry->stub_sec->output_offset
5917 + stub_entry->stub_sec->output_section->vma);
5918 addend = 0;
5919 }
5920 break;
5bd4f169
AM		 5921 }
5922
239e1f3a
AM		 5923 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5924 because such sections are not SEC_ALLOC and thus ld.so will
5925 not process them. */
65f38f15 5926 if (unresolved_reloc
239e1f3a 5927 && !((input_section->flags & SEC_DEBUGGING) != 0
65f38f15 5928 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
9c07fe7c
AM		 5929 {
5930 (*_bfd_error_handler)
5931 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
5932 bfd_archive_filename (input_bfd),
5933 bfd_get_section_name (input_bfd, input_section),
5934 (long) rel->r_offset,
5935 h->root.root.string);
5936 ret = false;
5937 }
5bd4f169 5938
65f38f15 5939 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 5940 input_bfd,
5941 input_section,
5942 contents,
5943 offset,
5944 relocation,
5945 addend);
5946
ef60b7ff 5947 if (r != bfd_reloc_ok)
5bd4f169
AM		 5948 {
5949 const char *name;
5950
5951 if (h != NULL)
5952 {
5953 if (h->root.type == bfd_link_hash_undefweak
65f38f15 5954 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 5955 {
5956 /* Assume this is a call protected by other code that
5957 detects the symbol is undefined. If this is the case,
5958 we can safely ignore the overflow. If not, the
5959 program is hosed anyway, and a little warning isn't
5960 going to help. */
5961
5962 continue;
5963 }
5964
5965 name = h->root.root.string;
5966 }
5967 else
5968 {
5969 name = bfd_elf_string_from_elf_section (input_bfd,
5970 symtab_hdr->sh_link,
5971 sym->st_name);
5972 if (name == NULL)
5973 continue;
5974 if (*name == '\0')
5975 name = bfd_section_name (input_bfd, sec);
5976 }
5977
ef60b7ff
AM		 5978 if (r == bfd_reloc_overflow)
5979 {
5980 if (warned)
5981 continue;
5982 if (!((*info->callbacks->reloc_overflow)
5983 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
5984 rel->r_addend, input_bfd, input_section, offset)))
5985 return false;
5986 }
5987 else
5988 {
5989 (*_bfd_error_handler)
5990 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
5991 bfd_archive_filename (input_bfd),
5992 bfd_get_section_name (input_bfd, input_section),
5993 (long) rel->r_offset, name, (int) r);
5994 ret = false;
5995 }
5bd4f169 5996 }
5bd4f169
AM		 5997 }
5998
5bd4f169
AM		 5999 return ret;
6000}
6001
6002/* Finish up dynamic symbol handling. We set the contents of various
6003 dynamic sections here. */
6004
6005static boolean
6006ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
6007 bfd *output_bfd;
6008 struct bfd_link_info *info;
6009 struct elf_link_hash_entry *h;
6010 Elf_Internal_Sym *sym;
6011{
65f38f15 6012 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6013 bfd *dynobj;
6014
65f38f15
AM		 6015 htab = ppc_hash_table (info);
6016 dynobj = htab->elf.dynobj;
5bd4f169 6017
41bd81ab
AM		 6018 if (h->plt.offset != (bfd_vma) -1
6019 && ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
5bd4f169 6020 {
65f38f15
AM		 6021 Elf_Internal_Rela rela;
6022 Elf64_External_Rela *loc;
5bd4f169
AM		 6023
6024 /* This symbol has an entry in the procedure linkage table. Set
3fad3c7c 6025 it up. */
5bd4f169 6026
5d1634d7 6027 if (htab->splt == NULL
65f38f15 6028 || htab->srelplt == NULL
e86ce104 6029 || htab->sglink == NULL)
65f38f15
AM		 6030 abort ();
6031
65f38f15
AM		 6032 /* Create a JMP_SLOT reloc to inform the dynamic linker to
6033 fill in the PLT entry. */
5bd4f169 6034
65f38f15
AM		 6035 rela.r_offset = (htab->splt->output_section->vma
6036 + htab->splt->output_offset
6037 + h->plt.offset);
e86ce104 6038 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
65f38f15
AM		 6039 rela.r_addend = 0;
6040
6041 loc = (Elf64_External_Rela *) htab->srelplt->contents;
6042 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
6043 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 6044 }
6045
6046 if (h->got.offset != (bfd_vma) -1)
6047 {
5bd4f169 6048 Elf_Internal_Rela rela;
65f38f15 6049 Elf64_External_Rela *loc;
5bd4f169
AM		 6050
6051 /* This symbol has an entry in the global offset table. Set it
3fad3c7c 6052 up. */
5bd4f169 6053
65f38f15
AM		 6054 if (htab->sgot == NULL || htab->srelgot == NULL)
6055 abort ();
5bd4f169 6056
65f38f15
AM		 6057 rela.r_offset = (htab->sgot->output_section->vma
6058 + htab->sgot->output_offset
dc810e39 6059 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 6060
65f38f15
AM		 6061 /* If this is a static link, or it is a -Bsymbolic link and the
6062 symbol is defined locally or was forced to be local because
6063 of a version file, we just want to emit a RELATIVE reloc.
6064 The entry in the global offset table will already have been
6065 initialized in the relocate_section function. */
5bd4f169 6066 if (info->shared
65f38f15
AM		 6067 && (info->symbolic
6068 || h->dynindx == -1
6069 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 6070 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
6071 {
65f38f15 6072 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 6073 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6074 rela.r_addend = (h->root.u.def.value
6075 + h->root.u.def.section->output_section->vma
6076 + h->root.u.def.section->output_offset);
6077 }
6078 else
6079 {
6080 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 6081 bfd_put_64 (output_bfd, (bfd_vma) 0,
6082 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 6083 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
6084 rela.r_addend = 0;
6085 }
6086
65f38f15
AM		 6087 loc = (Elf64_External_Rela *) htab->srelgot->contents;
6088 loc += htab->srelgot->reloc_count++;
6089 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 6090 }
6091
6092 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
6093 {
5bd4f169 6094 Elf_Internal_Rela rela;
65f38f15 6095 Elf64_External_Rela *loc;
5bd4f169 6096
65f38f15 6097 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 6098
65f38f15
AM		 6099 if (h->dynindx == -1
6100 || (h->root.type != bfd_link_hash_defined
6101 && h->root.type != bfd_link_hash_defweak)
6102 || htab->srelbss == NULL)
6103 abort ();
5bd4f169
AM		 6104
6105 rela.r_offset = (h->root.u.def.value
6106 + h->root.u.def.section->output_section->vma
6107 + h->root.u.def.section->output_offset);
6108 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
6109 rela.r_addend = 0;
65f38f15
AM		 6110 loc = (Elf64_External_Rela *) htab->srelbss->contents;
6111 loc += htab->srelbss->reloc_count++;
6112 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 6113 }
6114
5bd4f169
AM		 6115 /* Mark some specially defined symbols as absolute. */
6116 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
6117 sym->st_shndx = SHN_ABS;
6118
6119 return true;
6120}
6121
65f38f15
AM		 6122/* Used to decide how to sort relocs in an optimal manner for the
6123 dynamic linker, before writing them out. */
6124
6125static enum elf_reloc_type_class
6126ppc64_elf_reloc_type_class (rela)
6127 const Elf_Internal_Rela *rela;
6128{
a33d1f77
AM		 6129 enum elf_ppc_reloc_type r_type;
6130
6131 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
6132 switch (r_type)
65f38f15
AM		 6133 {
6134 case R_PPC64_RELATIVE:
6135 return reloc_class_relative;
6136 case R_PPC64_JMP_SLOT:
6137 return reloc_class_plt;
6138 case R_PPC64_COPY:
6139 return reloc_class_copy;
6140 default:
6141 return reloc_class_normal;
6142 }
6143}
6144
5bd4f169
AM		 6145/* Finish up the dynamic sections. */
6146
6147static boolean
6148ppc64_elf_finish_dynamic_sections (output_bfd, info)
6149 bfd *output_bfd;
6150 struct bfd_link_info *info;
6151{
65f38f15
AM		 6152 struct ppc_link_hash_table *htab;
6153 bfd *dynobj;
5bd4f169 6154 asection *sdyn;
5bd4f169 6155
65f38f15
AM		 6156 htab = ppc_hash_table (info);
6157 dynobj = htab->elf.dynobj;
5bd4f169
AM		 6158 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6159
65f38f15 6160 if (htab->elf.dynamic_sections_created)
5bd4f169 6161 {
5bd4f169
AM		 6162 Elf64_External_Dyn *dyncon, *dynconend;
6163
65f38f15
AM		 6164 if (sdyn == NULL || htab->sgot == NULL)
6165 abort ();
5bd4f169
AM		 6166
6167 dyncon = (Elf64_External_Dyn *) sdyn->contents;
6168 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
6169 for (; dyncon < dynconend; dyncon++)
6170 {
6171 Elf_Internal_Dyn dyn;
19397422 6172 asection *s;
5bd4f169
AM		 6173
6174 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
6175
6176 switch (dyn.d_tag)
6177 {
65f38f15
AM		 6178 default:
6179 continue;
5bd4f169 6180
5d1634d7
AM		 6181 case DT_PPC64_GLINK:
6182 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
6183 + htab->sglink->output_offset);
6184 break;
6185
19397422
AM		 6186 case DT_PPC64_OPD:
6187 s = bfd_get_section_by_name (output_bfd, ".opd");
6188 if (s != NULL)
6189 dyn.d_un.d_ptr = s->vma;
6190 break;
6191
6192 case DT_PPC64_OPDSZ:
6193 s = bfd_get_section_by_name (output_bfd, ".opd");
6194 if (s != NULL)
6195 dyn.d_un.d_val = s->_raw_size;
6196 break;
6197
65f38f15 6198 case DT_PLTGOT:
5d1634d7
AM		 6199 dyn.d_un.d_ptr = (htab->splt->output_section->vma
6200 + htab->splt->output_offset);
65f38f15
AM		 6201 break;
6202
6203 case DT_JMPREL:
5d1634d7
AM		 6204 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
6205 + htab->srelplt->output_offset);
65f38f15 6206 break;
5bd4f169 6207
65f38f15 6208 case DT_PLTRELSZ:
5d1634d7
AM		 6209 dyn.d_un.d_val = htab->srelplt->_raw_size;
6210 break;
6211
6212 case DT_RELASZ:
6213 /* Don't count procedure linkage table relocs in the
6214 overall reloc count. */
6215 if (htab->srelplt != NULL)
6216 dyn.d_un.d_val -= htab->srelplt->_raw_size;
65f38f15 6217 break;
5bd4f169 6218 }
5bd4f169 6219
65f38f15 6220 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 6221 }
5bd4f169
AM		 6222 }
6223
5d1634d7
AM		 6224 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
6225 {
6226 /* Fill in the first entry in the global offset table.
6227 We use it to hold the link-time TOCbase. */
6228 bfd_put_64 (output_bfd,
60ee0d4a 6229 elf_gp (output_bfd) + TOC_BASE_OFF,
5d1634d7
AM		 6230 htab->sgot->contents);
6231
6232 /* Set .got entry size. */
6233 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
6234 }
6235
6236 if (htab->splt != NULL && htab->splt->_raw_size != 0)
6237 {
6238 /* Set .plt entry size. */
6239 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
6240 = PLT_ENTRY_SIZE;
6241 }
6242
5bd4f169
AM		 6243 return true;
6244}
6245
6246#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
6247#define TARGET_LITTLE_NAME "elf64-powerpcle"
6248#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
6249#define TARGET_BIG_NAME "elf64-powerpc"
6250#define ELF_ARCH bfd_arch_powerpc
6251#define ELF_MACHINE_CODE EM_PPC64
6252#define ELF_MAXPAGESIZE 0x10000
6253#define elf_info_to_howto ppc64_elf_info_to_howto
6254
6255#ifdef EM_CYGNUS_POWERPC
6256#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6257#endif
6258
6259#ifdef EM_PPC_OLD
6260#define ELF_MACHINE_ALT2 EM_PPC_OLD
6261#endif
6262
6263#define elf_backend_want_got_sym 0
6264#define elf_backend_want_plt_sym 0
6265#define elf_backend_plt_alignment 3
6266#define elf_backend_plt_not_loaded 1
6267#define elf_backend_got_symbol_offset 0
5d1634d7
AM		 6268#define elf_backend_got_header_size 8
6269#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
5bd4f169 6270#define elf_backend_can_gc_sections 1
65f38f15 6271#define elf_backend_can_refcount 1
b491616a 6272#define elf_backend_rela_normal 1
5bd4f169 6273
65f38f15 6274#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
65f38f15
AM		 6275#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
6276#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
721956f4 6277#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
65f38f15 6278
feee612b 6279#define elf_backend_object_p ppc64_elf_object_p
65f38f15
AM		 6280#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
6281#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
6282#define elf_backend_check_relocs ppc64_elf_check_relocs
6283#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
6284#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
6285#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
e86ce104
AM		 6286#define elf_backend_hide_symbol ppc64_elf_hide_symbol
6287#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
65f38f15 6288#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
65f38f15
AM		 6289#define elf_backend_relocate_section ppc64_elf_relocate_section
6290#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
6291#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
6292#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 6293
6294#include "elf64-target.h"
GDB Binutils - Deliverables
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