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2002-09-25 Nathanael Nerode <neroden@gcc.gnu.org>
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
5d1634d7 2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5
6This file is part of BFD, the Binary File Descriptor library.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2 of the License, or
11(at your option) any later version.
12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this program; if not, write to the Free Software
20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22/* This file is based on the 64-bit PowerPC ELF ABI. It is also based
23 on the file elf32-ppc.c. */
24
25#include "bfd.h"
26#include "sysdep.h"
27#include "bfdlink.h"
28#include "libbfd.h"
29#include "elf-bfd.h"
30#include "elf/ppc.h"
5d1634d7 31#include "elf64-ppc.h"
5bd4f169 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
b48fa14c
AM		 1955 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
1956 struct elf_link_hash_entry *));
721956f4
AM		 1957static boolean ppc64_elf_check_relocs
1958 PARAMS ((bfd *, struct bfd_link_info *, asection *,
1959 const Elf_Internal_Rela *));
1960static asection * ppc64_elf_gc_mark_hook
1e2f5b6e
AM		 1961 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
1962 struct elf_link_hash_entry *, Elf_Internal_Sym *));
721956f4 1963static boolean ppc64_elf_gc_sweep_hook
1e2f5b6e
AM		 1964 PARAMS ((bfd *, struct bfd_link_info *, asection *,
1965 const Elf_Internal_Rela *));
721956f4
AM		 1966static boolean func_desc_adjust
1967 PARAMS ((struct elf_link_hash_entry *, PTR));
1968static boolean ppc64_elf_func_desc_adjust
1969 PARAMS ((bfd *, struct bfd_link_info *));
1970static boolean ppc64_elf_adjust_dynamic_symbol
1971 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1972static void ppc64_elf_hide_symbol
1973 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
1e2f5b6e
AM		 1974static boolean edit_opd
1975 PARAMS ((bfd *, struct bfd_link_info *));
721956f4
AM		 1976static boolean allocate_dynrelocs
1977 PARAMS ((struct elf_link_hash_entry *, PTR));
1978static boolean readonly_dynrelocs
1979 PARAMS ((struct elf_link_hash_entry *, PTR));
1980static enum elf_reloc_type_class ppc64_elf_reloc_type_class
1981 PARAMS ((const Elf_Internal_Rela *));
1982static boolean ppc64_elf_size_dynamic_sections
1983 PARAMS ((bfd *, struct bfd_link_info *));
1984static INLINE enum ppc_stub_type ppc_type_of_stub
1985 PARAMS ((asection *, const Elf_Internal_Rela *,
1986 struct ppc_link_hash_entry **, bfd_vma));
1987static bfd_byte *build_plt_stub
1988 PARAMS ((bfd *, bfd_byte *, int, int));
1989static boolean ppc_build_one_stub
1990 PARAMS ((struct bfd_hash_entry *, PTR));
1991static boolean ppc_size_one_stub
1992 PARAMS ((struct bfd_hash_entry *, PTR));
1993static void group_sections
1994 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean));
721956f4
AM		 1995static boolean ppc64_elf_relocate_section
1996 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
1997 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
1998 asection **));
1999static boolean ppc64_elf_finish_dynamic_symbol
2000 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2001 Elf_Internal_Sym *));
2002static boolean ppc64_elf_finish_dynamic_sections
2003 PARAMS ((bfd *, struct bfd_link_info *));
2004
65f38f15
AM		 2005/* Get the ppc64 ELF linker hash table from a link_info structure. */
2006
2007#define ppc_hash_table(p) \
2008 ((struct ppc_link_hash_table *) ((p)->hash))
2009
721956f4
AM		 2010#define ppc_stub_hash_lookup(table, string, create, copy) \
2011 ((struct ppc_stub_hash_entry *) \
2012 bfd_hash_lookup ((table), (string), (create), (copy)))
2013
2014#define ppc_branch_hash_lookup(table, string, create, copy) \
2015 ((struct ppc_branch_hash_entry *) \
2016 bfd_hash_lookup ((table), (string), (create), (copy)))
2017
2018/* Create an entry in the stub hash table. */
2019
2020static struct bfd_hash_entry *
2021stub_hash_newfunc (entry, table, string)
2022 struct bfd_hash_entry *entry;
2023 struct bfd_hash_table *table;
2024 const char *string;
2025{
2026 /* Allocate the structure if it has not already been allocated by a
2027 subclass. */
2028 if (entry == NULL)
2029 {
2030 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2031 if (entry == NULL)
2032 return entry;
2033 }
2034
2035 /* Call the allocation method of the superclass. */
2036 entry = bfd_hash_newfunc (entry, table, string);
2037 if (entry != NULL)
2038 {
2039 struct ppc_stub_hash_entry *eh;
2040
2041 /* Initialize the local fields. */
2042 eh = (struct ppc_stub_hash_entry *) entry;
2043 eh->stub_sec = NULL;
2044 eh->stub_offset = 0;
2045 eh->target_value = 0;
2046 eh->target_section = NULL;
2047 eh->stub_type = ppc_stub_none;
2048 eh->h = NULL;
2049 eh->id_sec = NULL;
2050 }
2051
2052 return entry;
2053}
2054
2055/* Create an entry in the branch hash table. */
2056
2057static struct bfd_hash_entry *
2058branch_hash_newfunc (entry, table, string)
2059 struct bfd_hash_entry *entry;
2060 struct bfd_hash_table *table;
2061 const char *string;
2062{
2063 /* Allocate the structure if it has not already been allocated by a
2064 subclass. */
2065 if (entry == NULL)
2066 {
2067 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2068 if (entry == NULL)
2069 return entry;
2070 }
2071
2072 /* Call the allocation method of the superclass. */
2073 entry = bfd_hash_newfunc (entry, table, string);
2074 if (entry != NULL)
2075 {
2076 struct ppc_branch_hash_entry *eh;
2077
2078 /* Initialize the local fields. */
2079 eh = (struct ppc_branch_hash_entry *) entry;
2080 eh->offset = 0;
2081 eh->iter = 0;
2082 }
2083
2084 return entry;
2085}
2086
65f38f15
AM		 2087/* Create an entry in a ppc64 ELF linker hash table. */
2088
2089static struct bfd_hash_entry *
2090link_hash_newfunc (entry, table, string)
2091 struct bfd_hash_entry *entry;
2092 struct bfd_hash_table *table;
2093 const char *string;
2094{
2095 /* Allocate the structure if it has not already been allocated by a
2096 subclass. */
2097 if (entry == NULL)
2098 {
2099 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2100 if (entry == NULL)
2101 return entry;
2102 }
2103
2104 /* Call the allocation method of the superclass. */
2105 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2106 if (entry != NULL)
2107 {
2108 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2109
721956f4 2110 eh->stub_cache = NULL;
65f38f15 2111 eh->dyn_relocs = NULL;
721956f4 2112 eh->oh = NULL;
e86ce104
AM		 2113 eh->is_func = 0;
2114 eh->is_func_descriptor = 0;
1e2f5b6e 2115 eh->is_entry = 0;
65f38f15
AM		 2116 }
2117
2118 return entry;
2119}
2120
2121/* Create a ppc64 ELF linker hash table. */
2122
2123static struct bfd_link_hash_table *
2124ppc64_elf_link_hash_table_create (abfd)
2125 bfd *abfd;
2126{
2127 struct ppc_link_hash_table *htab;
2128 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2129
e2d34d7d 2130 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
65f38f15
AM		 2131 if (htab == NULL)
2132 return NULL;
2133
2134 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2135 {
e2d34d7d 2136 free (htab);
65f38f15
AM		 2137 return NULL;
2138 }
2139
721956f4
AM		 2140 /* Init the stub hash table too. */
2141 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2142 return NULL;
2143
2144 /* And the branch hash table. */
2145 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2146 return NULL;
2147
2148 htab->stub_bfd = NULL;
2149 htab->add_stub_section = NULL;
2150 htab->layout_sections_again = NULL;
2151 htab->stub_group = NULL;
65f38f15
AM		 2152 htab->sgot = NULL;
2153 htab->srelgot = NULL;
2154 htab->splt = NULL;
2155 htab->srelplt = NULL;
2156 htab->sdynbss = NULL;
2157 htab->srelbss = NULL;
2158 htab->sglink = NULL;
82bd7b59 2159 htab->sfpr = NULL;
721956f4
AM		 2160 htab->sbrlt = NULL;
2161 htab->srelbrlt = NULL;
2162 htab->stub_error = 0;
2163 htab->has_14bit_branch = 0;
805fc799 2164 htab->have_undefweak = 0;
721956f4 2165 htab->stub_iteration = 0;
ec338859 2166 htab->sym_sec.abfd = NULL;
65f38f15
AM		 2167
2168 return &htab->elf.root;
2169}
2170
721956f4
AM		 2171/* Free the derived linker hash table. */
2172
2173static void
2174ppc64_elf_link_hash_table_free (hash)
2175 struct bfd_link_hash_table *hash;
2176{
2177 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
2178
2179 bfd_hash_table_free (&ret->stub_hash_table);
2180 bfd_hash_table_free (&ret->branch_hash_table);
2181 _bfd_generic_link_hash_table_free (hash);
2182}
2183
2184/* Build a name for an entry in the stub hash table. */
2185
2186static char *
2187ppc_stub_name (input_section, sym_sec, h, rel)
2188 const asection *input_section;
2189 const asection *sym_sec;
2190 const struct ppc_link_hash_entry *h;
2191 const Elf_Internal_Rela *rel;
2192{
2193 char *stub_name;
2194 bfd_size_type len;
2195
2196 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
2197 offsets from a sym as a branch target? In fact, we could
2198 probably assume the addend is always zero. */
2199 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
2200
2201 if (h)
2202 {
2203 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
2204 stub_name = bfd_malloc (len);
2205 if (stub_name != NULL)
2206 {
2207 sprintf (stub_name, "%08x_%s+%x",
2208 input_section->id & 0xffffffff,
2209 h->elf.root.root.string,
2210 (int) rel->r_addend & 0xffffffff);
2211 }
2212 }
2213 else
2214 {
2215 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2216 stub_name = bfd_malloc (len);
2217 if (stub_name != NULL)
2218 {
2219 sprintf (stub_name, "%08x_%x:%x+%x",
2220 input_section->id & 0xffffffff,
2221 sym_sec->id & 0xffffffff,
2222 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
2223 (int) rel->r_addend & 0xffffffff);
2224 }
2225 }
2226 return stub_name;
2227}
2228
2229/* Look up an entry in the stub hash. Stub entries are cached because
2230 creating the stub name takes a bit of time. */
2231
2232static struct ppc_stub_hash_entry *
2233ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
2234 const asection *input_section;
2235 const asection *sym_sec;
2236 struct elf_link_hash_entry *hash;
2237 const Elf_Internal_Rela *rel;
2238 struct ppc_link_hash_table *htab;
2239{
2240 struct ppc_stub_hash_entry *stub_entry;
2241 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
2242 const asection *id_sec;
2243
2244 /* If this input section is part of a group of sections sharing one
2245 stub section, then use the id of the first section in the group.
2246 Stub names need to include a section id, as there may well be
2247 more than one stub used to reach say, printf, and we need to
2248 distinguish between them. */
2249 id_sec = htab->stub_group[input_section->id].link_sec;
2250
2251 if (h != NULL && h->stub_cache != NULL
2252 && h->stub_cache->h == h
2253 && h->stub_cache->id_sec == id_sec)
2254 {
2255 stub_entry = h->stub_cache;
2256 }
2257 else
2258 {
2259 char *stub_name;
2260
2261 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
2262 if (stub_name == NULL)
2263 return NULL;
2264
2265 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
2266 stub_name, false, false);
2267 if (h != NULL)
2268 h->stub_cache = stub_entry;
2269
2270 free (stub_name);
2271 }
2272
2273 return stub_entry;
2274}
2275
2276/* Add a new stub entry to the stub hash. Not all fields of the new
2277 stub entry are initialised. */
2278
2279static struct ppc_stub_hash_entry *
2280ppc_add_stub (stub_name, section, htab)
2281 const char *stub_name;
2282 asection *section;
2283 struct ppc_link_hash_table *htab;
2284{
2285 asection *link_sec;
2286 asection *stub_sec;
2287 struct ppc_stub_hash_entry *stub_entry;
2288
2289 link_sec = htab->stub_group[section->id].link_sec;
2290 stub_sec = htab->stub_group[section->id].stub_sec;
2291 if (stub_sec == NULL)
2292 {
2293 stub_sec = htab->stub_group[link_sec->id].stub_sec;
2294 if (stub_sec == NULL)
2295 {
d4c88bbb 2296 size_t namelen;
721956f4
AM		 2297 bfd_size_type len;
2298 char *s_name;
2299
d4c88bbb
AM		 2300 namelen = strlen (link_sec->name);
2301 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 2302 s_name = bfd_alloc (htab->stub_bfd, len);
2303 if (s_name == NULL)
2304 return NULL;
2305
d4c88bbb
AM		 2306 memcpy (s_name, link_sec->name, namelen);
2307 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 2308 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
2309 if (stub_sec == NULL)
2310 return NULL;
2311 htab->stub_group[link_sec->id].stub_sec = stub_sec;
2312 }
2313 htab->stub_group[section->id].stub_sec = stub_sec;
2314 }
2315
2316 /* Enter this entry into the linker stub hash table. */
2317 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2318 true, false);
2319 if (stub_entry == NULL)
2320 {
2321 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2322 bfd_archive_filename (section->owner),
2323 stub_name);
2324 return NULL;
2325 }
2326
2327 stub_entry->stub_sec = stub_sec;
2328 stub_entry->stub_offset = 0;
2329 stub_entry->id_sec = link_sec;
2330 return stub_entry;
2331}
2332
82bd7b59
AM		 2333/* Create sections for linker generated code. */
2334
2335static boolean
2336create_linkage_sections (dynobj, info)
2337 bfd *dynobj;
2338 struct bfd_link_info *info;
2339{
2340 struct ppc_link_hash_table *htab;
2341 flagword flags;
2342
2343 htab = ppc_hash_table (info);
2344
2345 /* Create .sfpr for code to save and restore fp regs. */
2346 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
2347 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
721956f4 2348 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
82bd7b59
AM		 2349 if (htab->sfpr == NULL
2350 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
2351 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
2352 return false;
2353
721956f4
AM		 2354 /* Create .glink for lazy dynamic linking support. */
2355 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
82bd7b59
AM		 2356 if (htab->sglink == NULL
2357 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
2358 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
2359 return false;
2360
721956f4
AM		 2361 /* Create .branch_lt for plt_branch stubs. */
2362 flags = (SEC_ALLOC | SEC_LOAD
2363 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2364 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
2365 if (htab->sbrlt == NULL
2366 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
2367 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
2368 return false;
2369
2370 if (info->shared)
2371 {
2372 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
2373 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1e2f5b6e 2374 htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
721956f4
AM		 2375 if (!htab->srelbrlt
2376 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
2377 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
2378 return false;
2379 }
82bd7b59
AM		 2380 return true;
2381}
2382
65f38f15
AM		 2383/* Create .got and .rela.got sections in DYNOBJ, and set up
2384 shortcuts to them in our hash table. */
2385
2386static boolean
2387create_got_section (dynobj, info)
2388 bfd *dynobj;
2389 struct bfd_link_info *info;
2390{
2391 struct ppc_link_hash_table *htab;
2392
2393 if (! _bfd_elf_create_got_section (dynobj, info))
2394 return false;
2395
2396 htab = ppc_hash_table (info);
2397 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2398 if (!htab->sgot)
2399 abort ();
2400
2401 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
2402 if (!htab->srelgot
2403 || ! bfd_set_section_flags (dynobj, htab->srelgot,
2404 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2405 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2406 | SEC_READONLY))
2407 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
2408 return false;
2409 return true;
2410}
5bd4f169 2411
82bd7b59 2412/* Create the dynamic sections, and set up shortcuts. */
5bd4f169
AM		 2413
2414static boolean
65f38f15
AM		 2415ppc64_elf_create_dynamic_sections (dynobj, info)
2416 bfd *dynobj;
5bd4f169
AM		 2417 struct bfd_link_info *info;
2418{
65f38f15 2419 struct ppc_link_hash_table *htab;
5bd4f169 2420
65f38f15
AM		 2421 htab = ppc_hash_table (info);
2422 if (!htab->sgot && !create_got_section (dynobj, info))
5bd4f169
AM		 2423 return false;
2424
65f38f15 2425 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
5bd4f169 2426 return false;
65f38f15
AM		 2427
2428 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2429 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2430 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2431 if (!info->shared)
2432 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2433
2434 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2435 || (!info->shared && !htab->srelbss))
2436 abort ();
2437
5bd4f169
AM		 2438 return true;
2439}
2440
65f38f15
AM		 2441/* Copy the extra info we tack onto an elf_link_hash_entry. */
2442
2443static void
b48fa14c
AM		 2444ppc64_elf_copy_indirect_symbol (bed, dir, ind)
2445 struct elf_backend_data *bed;
65f38f15
AM		 2446 struct elf_link_hash_entry *dir, *ind;
2447{
2448 struct ppc_link_hash_entry *edir, *eind;
2449
2450 edir = (struct ppc_link_hash_entry *) dir;
2451 eind = (struct ppc_link_hash_entry *) ind;
2452
bbd7ec4a 2453 if (eind->dyn_relocs != NULL)
65f38f15 2454 {
bbd7ec4a
AM		 2455 if (edir->dyn_relocs != NULL)
2456 {
2457 struct ppc_dyn_relocs **pp;
2458 struct ppc_dyn_relocs *p;
2459
1e370bd2 2460 if (ind->root.type == bfd_link_hash_indirect)
bbd7ec4a
AM		 2461 abort ();
2462
2463 /* Add reloc counts against the weak sym to the strong sym
2464 list. Merge any entries against the same section. */
2465 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2466 {
2467 struct ppc_dyn_relocs *q;
2468
2469 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2470 if (q->sec == p->sec)
2471 {
2472 q->pc_count += p->pc_count;
2473 q->count += p->count;
2474 *pp = p->next;
2475 break;
2476 }
2477 if (q == NULL)
2478 pp = &p->next;
2479 }
2480 *pp = edir->dyn_relocs;
2481 }
2482
65f38f15
AM		 2483 edir->dyn_relocs = eind->dyn_relocs;
2484 eind->dyn_relocs = NULL;
2485 }
65f38f15 2486
d1329ca3
AM		 2487 edir->is_func |= eind->is_func;
2488 edir->is_func_descriptor |= eind->is_func_descriptor;
1e2f5b6e 2489 edir->is_entry |= eind->is_entry;
e86ce104 2490
b48fa14c 2491 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
65f38f15
AM		 2492}
2493
1e2f5b6e
AM		 2494/* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
2495 symbols undefined on the command-line. */
2496
2497boolean
2498ppc64_elf_mark_entry_syms (info)
2499 struct bfd_link_info *info;
2500{
2501 struct ppc_link_hash_table *htab;
2502 struct bfd_sym_chain *sym;
2503
2504 htab = ppc_hash_table (info);
2505 for (sym = info->gc_sym_list; sym; sym = sym->next)
2506 {
2507 struct elf_link_hash_entry *h;
2508
2509 h = elf_link_hash_lookup (&htab->elf, sym->name, false, false, false);
2510 if (h != NULL)
2511 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
2512 }
2513 return true;
2514}
2515
5bd4f169 2516/* Look through the relocs for a section during the first phase, and
65f38f15 2517 calculate needed space in the global offset table, procedure
5d1634d7 2518 linkage table, and dynamic reloc sections. */
5bd4f169
AM		 2519
2520static boolean
2521ppc64_elf_check_relocs (abfd, info, sec, relocs)
2522 bfd *abfd;
2523 struct bfd_link_info *info;
2524 asection *sec;
2525 const Elf_Internal_Rela *relocs;
2526{
65f38f15 2527 struct ppc_link_hash_table *htab;
5bd4f169
AM		 2528 Elf_Internal_Shdr *symtab_hdr;
2529 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2530 const Elf_Internal_Rela *rel;
2531 const Elf_Internal_Rela *rel_end;
5bd4f169 2532 asection *sreloc;
1e2f5b6e 2533 asection **opd_sym_map;
5bd4f169
AM		 2534
2535 if (info->relocateable)
2536 return true;
2537
65f38f15 2538 htab = ppc_hash_table (info);
5bd4f169 2539 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM		 2540
2541 sym_hashes = elf_sym_hashes (abfd);
2542 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 2543 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
2544 - symtab_hdr->sh_info);
5bd4f169
AM		 2545
2546 sreloc = NULL;
1e2f5b6e
AM		 2547 opd_sym_map = NULL;
2548 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
2549 {
2550 /* Garbage collection needs some extra help with .opd sections.
2551 We don't want to necessarily keep everything referenced by
2552 relocs in .opd, as that would keep all functions. Instead,
2553 if we reference an .opd symbol (a function descriptor), we
2554 want to keep the function code symbol's section. This is
2555 easy for global symbols, but for local syms we need to keep
2556 information about the associated function section. Later, if
2557 edit_opd deletes entries, we'll use this array to adjust
2558 local syms in .opd. */
2559 union opd_info {
2560 asection *func_section;
2561 long entry_adjust;
2562 };
2563 bfd_size_type amt;
2564
2565 amt = sec->_raw_size * sizeof (union opd_info) / 24;
2566 opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
2567 if (opd_sym_map == NULL)
2568 return false;
2569 elf_section_data (sec)->tdata = opd_sym_map;
2570 }
5bd4f169 2571
82bd7b59
AM		 2572 if (htab->elf.dynobj == NULL)
2573 htab->elf.dynobj = abfd;
2574 if (htab->sfpr == NULL
2575 && !create_linkage_sections (htab->elf.dynobj, info))
2576 return false;
2577
5bd4f169
AM		 2578 rel_end = relocs + sec->reloc_count;
2579 for (rel = relocs; rel < rel_end; rel++)
2580 {
2581 unsigned long r_symndx;
2582 struct elf_link_hash_entry *h;
a33d1f77 2583 enum elf_ppc_reloc_type r_type;
5bd4f169
AM		 2584
2585 r_symndx = ELF64_R_SYM (rel->r_info);
2586 if (r_symndx < symtab_hdr->sh_info)
2587 h = NULL;
2588 else
2589 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2590
a33d1f77
AM		 2591 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2592 switch (r_type)
5bd4f169
AM		 2593 {
2594 /* GOT16 relocations */
2595 case R_PPC64_GOT16:
5bd4f169 2596 case R_PPC64_GOT16_DS:
65f38f15
AM		 2597 case R_PPC64_GOT16_HA:
2598 case R_PPC64_GOT16_HI:
2599 case R_PPC64_GOT16_LO:
5bd4f169 2600 case R_PPC64_GOT16_LO_DS:
5bd4f169 2601
65f38f15 2602 /* This symbol requires a global offset table entry. */
82bd7b59
AM		 2603 if (htab->sgot == NULL
2604 && !create_got_section (htab->elf.dynobj, info))
2605 return false;
5bd4f169
AM		 2606
2607 if (h != NULL)
2608 {
65f38f15 2609 h->got.refcount += 1;
5bd4f169
AM		 2610 }
2611 else
2612 {
65f38f15
AM		 2613 bfd_signed_vma *local_got_refcounts;
2614
5bd4f169 2615 /* This is a global offset table entry for a local symbol. */
65f38f15 2616 local_got_refcounts = elf_local_got_refcounts (abfd);
5bd4f169
AM		 2617 if (local_got_refcounts == NULL)
2618 {
dc810e39 2619 bfd_size_type size;
5bd4f169 2620
dc810e39
AM		 2621 size = symtab_hdr->sh_info;
2622 size *= sizeof (bfd_signed_vma);
2623 local_got_refcounts = ((bfd_signed_vma *)
65f38f15 2624 bfd_zalloc (abfd, size));
5bd4f169
AM		 2625 if (local_got_refcounts == NULL)
2626 return false;
2627 elf_local_got_refcounts (abfd) = local_got_refcounts;
5bd4f169 2628 }
65f38f15 2629 local_got_refcounts[r_symndx] += 1;
5bd4f169
AM		 2630 }
2631 break;
2632
5bd4f169 2633 case R_PPC64_PLT16_HA:
65f38f15
AM		 2634 case R_PPC64_PLT16_HI:
2635 case R_PPC64_PLT16_LO:
2636 case R_PPC64_PLT32:
2637 case R_PPC64_PLT64:
5bd4f169 2638 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 2639 actually build the entry in adjust_dynamic_symbol,
2640 because this might be a case of linking PIC code without
2641 linking in any dynamic objects, in which case we don't
2642 need to generate a procedure linkage table after all. */
5bd4f169
AM		 2643 if (h == NULL)
2644 {
2645 /* It does not make sense to have a procedure linkage
3fad3c7c 2646 table entry for a local symbol. */
5bd4f169
AM		 2647 bfd_set_error (bfd_error_bad_value);
2648 return false;
2649 }
2650
65f38f15
AM		 2651 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2652 h->plt.refcount += 1;
e86ce104 2653 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5bd4f169
AM		 2654 break;
2655
2656 /* The following relocations don't need to propagate the
2657 relocation if linking a shared object since they are
2658 section relative. */
2659 case R_PPC64_SECTOFF:
2660 case R_PPC64_SECTOFF_LO:
2661 case R_PPC64_SECTOFF_HI:
2662 case R_PPC64_SECTOFF_HA:
2663 case R_PPC64_SECTOFF_DS:
2664 case R_PPC64_SECTOFF_LO_DS:
2665 case R_PPC64_TOC16:
2666 case R_PPC64_TOC16_LO:
2667 case R_PPC64_TOC16_HI:
2668 case R_PPC64_TOC16_HA:
2669 case R_PPC64_TOC16_DS:
2670 case R_PPC64_TOC16_LO_DS:
2671 break;
2672
2673 /* This relocation describes the C++ object vtable hierarchy.
2674 Reconstruct it for later use during GC. */
2675 case R_PPC64_GNU_VTINHERIT:
2676 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2677 return false;
2678 break;
2679
2680 /* This relocation describes which C++ vtable entries are actually
2681 used. Record for later use during GC. */
2682 case R_PPC64_GNU_VTENTRY:
2683 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2684 return false;
2685 break;
2686
721956f4
AM		 2687 case R_PPC64_REL14:
2688 case R_PPC64_REL14_BRTAKEN:
2689 case R_PPC64_REL14_BRNTAKEN:
2690 htab->has_14bit_branch = 1;
2691 /* Fall through. */
2692
5d1634d7 2693 case R_PPC64_REL24:
e86ce104
AM		 2694 if (h != NULL
2695 && h->root.root.string[0] == '.'
2696 && h->root.root.string[1] != 0)
5d1634d7
AM		 2697 {
2698 /* We may need a .plt entry if the function this reloc
2699 refers to is in a shared lib. */
2700 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2701 h->plt.refcount += 1;
e86ce104 2702 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5d1634d7
AM		 2703 }
2704 break;
2705
e86ce104 2706 case R_PPC64_ADDR64:
1e2f5b6e 2707 if (opd_sym_map != NULL
e86ce104
AM		 2708 && h != NULL
2709 && h->root.root.string[0] == '.'
2710 && h->root.root.string[1] != 0)
2711 {
2712 struct elf_link_hash_entry *fdh;
2713
2714 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
2715 false, false, false);
2716 if (fdh != NULL)
2717 {
e86ce104 2718 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
721956f4 2719 ((struct ppc_link_hash_entry *) fdh)->oh = h;
e86ce104 2720 ((struct ppc_link_hash_entry *) h)->is_func = 1;
721956f4 2721 ((struct ppc_link_hash_entry *) h)->oh = fdh;
e86ce104
AM		 2722 }
2723 }
1e2f5b6e
AM		 2724 if (opd_sym_map != NULL
2725 && h == NULL
2726 && rel + 1 < rel_end
2727 && ((enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
2728 == R_PPC64_TOC))
2729 {
2730 asection *s;
2731
2732 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
2733 r_symndx);
2734 if (s == NULL)
2735 return false;
2736 else if (s != sec)
2737 opd_sym_map[rel->r_offset / 24] = s;
2738 }
e86ce104
AM		 2739 /* Fall through. */
2740
5bd4f169
AM		 2741 case R_PPC64_REL64:
2742 case R_PPC64_REL32:
65f38f15
AM		 2743 case R_PPC64_ADDR14:
2744 case R_PPC64_ADDR14_BRNTAKEN:
2745 case R_PPC64_ADDR14_BRTAKEN:
2746 case R_PPC64_ADDR16:
2747 case R_PPC64_ADDR16_DS:
2748 case R_PPC64_ADDR16_HA:
2749 case R_PPC64_ADDR16_HI:
2750 case R_PPC64_ADDR16_HIGHER:
2751 case R_PPC64_ADDR16_HIGHERA:
2752 case R_PPC64_ADDR16_HIGHEST:
2753 case R_PPC64_ADDR16_HIGHESTA:
2754 case R_PPC64_ADDR16_LO:
2755 case R_PPC64_ADDR16_LO_DS:
2756 case R_PPC64_ADDR24:
2757 case R_PPC64_ADDR30:
2758 case R_PPC64_ADDR32:
65f38f15
AM		 2759 case R_PPC64_UADDR16:
2760 case R_PPC64_UADDR32:
2761 case R_PPC64_UADDR64:
5bd4f169 2762 case R_PPC64_TOC:
41bd81ab 2763 /* Don't propagate .opd relocs. */
1e2f5b6e 2764 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 2765 break;
e86ce104 2766
65f38f15
AM		 2767 /* If we are creating a shared library, and this is a reloc
2768 against a global symbol, or a non PC relative reloc
2769 against a local symbol, then we need to copy the reloc
2770 into the shared library. However, if we are linking with
2771 -Bsymbolic, we do not need to copy a reloc against a
2772 global symbol which is defined in an object we are
2773 including in the link (i.e., DEF_REGULAR is set). At
2774 this point we have not seen all the input files, so it is
2775 possible that DEF_REGULAR is not set now but will be set
2776 later (it is never cleared). In case of a weak definition,
2777 DEF_REGULAR may be cleared later by a strong definition in
2778 a shared library. We account for that possibility below by
2779 storing information in the relocs_copied field of the hash
2780 table entry. A similar situation occurs when creating
2781 shared libraries and symbol visibility changes render the
2782 symbol local.
2783
2784 If on the other hand, we are creating an executable, we
2785 may need to keep relocations for symbols satisfied by a
2786 dynamic library if we manage to avoid copy relocs for the
2787 symbol. */
2788 if ((info->shared
2789 && (sec->flags & SEC_ALLOC) != 0
a33d1f77 2790 && (IS_ABSOLUTE_RELOC (r_type)
65f38f15
AM		 2791 || (h != NULL
2792 && (! info->symbolic
2793 || h->root.type == bfd_link_hash_defweak
2794 || (h->elf_link_hash_flags
2795 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2796 || (!info->shared
2797 && (sec->flags & SEC_ALLOC) != 0
2798 && h != NULL
2799 && (h->root.type == bfd_link_hash_defweak
2800 || (h->elf_link_hash_flags
2801 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
5bd4f169 2802 {
ec338859
AM		 2803 struct ppc_dyn_relocs *p;
2804 struct ppc_dyn_relocs **head;
2805
65f38f15
AM		 2806 /* We must copy these reloc types into the output file.
2807 Create a reloc section in dynobj and make room for
2808 this reloc. */
5bd4f169
AM		 2809 if (sreloc == NULL)
2810 {
2811 const char *name;
65f38f15 2812 bfd *dynobj;
5bd4f169
AM		 2813
2814 name = (bfd_elf_string_from_elf_section
2815 (abfd,
2816 elf_elfheader (abfd)->e_shstrndx,
2817 elf_section_data (sec)->rel_hdr.sh_name));
2818 if (name == NULL)
2819 return false;
2820
65f38f15
AM		 2821 if (strncmp (name, ".rela", 5) != 0
2822 || strcmp (bfd_get_section_name (abfd, sec),
2823 name + 5) != 0)
2824 {
2825 (*_bfd_error_handler)
2826 (_("%s: bad relocation section name `%s\'"),
2827 bfd_archive_filename (abfd), name);
5d1634d7 2828 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 2829 }
2830
65f38f15 2831 dynobj = htab->elf.dynobj;
5bd4f169
AM		 2832 sreloc = bfd_get_section_by_name (dynobj, name);
2833 if (sreloc == NULL)
2834 {
2835 flagword flags;
2836
2837 sreloc = bfd_make_section (dynobj, name);
2838 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2839 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2840 if ((sec->flags & SEC_ALLOC) != 0)
2841 flags |= SEC_ALLOC | SEC_LOAD;
2842 if (sreloc == NULL
2843 || ! bfd_set_section_flags (dynobj, sreloc, flags)
65f38f15 2844 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
5bd4f169
AM		 2845 return false;
2846 }
65f38f15 2847 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 2848 }
2849
65f38f15
AM		 2850 /* If this is a global symbol, we count the number of
2851 relocations we need for this symbol. */
2852 if (h != NULL)
2853 {
ec338859 2854 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 2855 }
2856 else
2857 {
ec338859
AM		 2858 /* Track dynamic relocs needed for local syms too.
2859 We really need local syms available to do this
2860 easily. Oh well. */
2861
2862 asection *s;
2863 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2864 sec, r_symndx);
2865 if (s == NULL)
2866 return false;
2867
2868 head = ((struct ppc_dyn_relocs **)
2869 &elf_section_data (s)->local_dynrel);
65f38f15 2870 }
ec338859
AM		 2871
2872 p = *head;
2873 if (p == NULL || p->sec != sec)
2874 {
2875 p = ((struct ppc_dyn_relocs *)
2876 bfd_alloc (htab->elf.dynobj,
2877 (bfd_size_type) sizeof *p));
2878 if (p == NULL)
2879 return false;
2880 p->next = *head;
2881 *head = p;
2882 p->sec = sec;
2883 p->count = 0;
2884 p->pc_count = 0;
2885 }
2886
2887 p->count += 1;
2888 if (!IS_ABSOLUTE_RELOC (r_type))
2889 p->pc_count += 1;
65f38f15 2890 }
5bd4f169 2891 break;
65f38f15
AM		 2892
2893 default:
96e0dda4 2894 break;
5bd4f169
AM		 2895 }
2896 }
2897
2898 return true;
2899}
2900
2901/* Return the section that should be marked against GC for a given
2902 relocation. */
2903
2904static asection *
1e2f5b6e
AM		 2905ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
2906 asection *sec;
5bd4f169
AM		 2907 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2908 Elf_Internal_Rela *rel;
2909 struct elf_link_hash_entry *h;
2910 Elf_Internal_Sym *sym;
2911{
1e2f5b6e
AM		 2912 asection *rsec = NULL;
2913
5bd4f169
AM		 2914 if (h != NULL)
2915 {
a33d1f77 2916 enum elf_ppc_reloc_type r_type;
1e2f5b6e 2917 struct ppc_link_hash_entry *fdh;
a33d1f77
AM		 2918
2919 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2920 switch (r_type)
5bd4f169
AM		 2921 {
2922 case R_PPC64_GNU_VTINHERIT:
2923 case R_PPC64_GNU_VTENTRY:
2924 break;
2925
2926 default:
2927 switch (h->root.type)
2928 {
2929 case bfd_link_hash_defined:
2930 case bfd_link_hash_defweak:
1e2f5b6e
AM		 2931 fdh = (struct ppc_link_hash_entry *) h;
2932
2933 /* Function descriptor syms cause the associated
2934 function code sym section to be marked. */
2935 if (fdh->is_func_descriptor)
2936 rsec = fdh->oh->root.u.def.section;
2937
2938 /* Function entry syms return NULL if they are in .opd
2939 and are not ._start (or others undefined on the ld
2940 command line). Thus we avoid marking all function
2941 sections, as all functions are referenced in .opd. */
2942 else if ((fdh->oh != NULL
2943 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
2944 || elf_section_data (sec)->tdata == NULL)
2945 rsec = h->root.u.def.section;
2946 break;
5bd4f169
AM		 2947
2948 case bfd_link_hash_common:
1e2f5b6e
AM		 2949 rsec = h->root.u.c.p->section;
2950 break;
5bd4f169
AM		 2951
2952 default:
2953 break;
2954 }
2955 }
2956 }
2957 else
2958 {
1e2f5b6e
AM		 2959 asection **opd_sym_section;
2960
2961 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2962 opd_sym_section = (asection **) elf_section_data (rsec)->tdata;
2963 if (opd_sym_section != NULL)
2964 rsec = opd_sym_section[sym->st_value / 24];
2965 else if (elf_section_data (sec)->tdata != NULL)
2966 rsec = NULL;
5bd4f169
AM		 2967 }
2968
1e2f5b6e 2969 return rsec;
5bd4f169
AM		 2970}
2971
65f38f15
AM		 2972/* Update the .got, .plt. and dynamic reloc reference counts for the
2973 section being removed. */
5bd4f169
AM		 2974
2975static boolean
2976ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2977 bfd *abfd;
2978 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2979 asection *sec;
2980 const Elf_Internal_Rela *relocs;
2981{
2982 Elf_Internal_Shdr *symtab_hdr;
2983 struct elf_link_hash_entry **sym_hashes;
2984 bfd_signed_vma *local_got_refcounts;
2985 const Elf_Internal_Rela *rel, *relend;
5bd4f169 2986
ec338859
AM		 2987 elf_section_data (sec)->local_dynrel = NULL;
2988
5bd4f169
AM		 2989 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2990 sym_hashes = elf_sym_hashes (abfd);
2991 local_got_refcounts = elf_local_got_refcounts (abfd);
2992
2993 relend = relocs + sec->reloc_count;
2994 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 2995 {
2996 unsigned long r_symndx;
2997 enum elf_ppc_reloc_type r_type;
2998 struct elf_link_hash_entry *h;
5bd4f169 2999
a33d1f77
AM		 3000 r_symndx = ELF64_R_SYM (rel->r_info);
3001 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3002 switch (r_type)
3003 {
3004 case R_PPC64_GOT16:
3005 case R_PPC64_GOT16_DS:
3006 case R_PPC64_GOT16_HA:
3007 case R_PPC64_GOT16_HI:
3008 case R_PPC64_GOT16_LO:
3009 case R_PPC64_GOT16_LO_DS:
3010 if (r_symndx >= symtab_hdr->sh_info)
3011 {
3012 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3013 if (h->got.refcount > 0)
3014 h->got.refcount--;
3015 }
3016 else
3017 {
3018 if (local_got_refcounts[r_symndx] > 0)
3019 local_got_refcounts[r_symndx]--;
3020 }
3021 break;
65f38f15 3022
a33d1f77
AM		 3023 case R_PPC64_PLT16_HA:
3024 case R_PPC64_PLT16_HI:
3025 case R_PPC64_PLT16_LO:
3026 case R_PPC64_PLT32:
3027 case R_PPC64_PLT64:
3028 if (r_symndx >= symtab_hdr->sh_info)
3029 {
3030 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3031 if (h->plt.refcount > 0)
3032 h->plt.refcount--;
3033 }
3034 break;
65f38f15 3035
721956f4
AM		 3036 case R_PPC64_REL14:
3037 case R_PPC64_REL14_BRNTAKEN:
3038 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 3039 case R_PPC64_REL24:
3040 if (r_symndx >= symtab_hdr->sh_info)
3041 {
3042 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3043 if (h->plt.refcount > 0)
3044 h->plt.refcount--;
3045 }
e86ce104 3046 break;
5d1634d7 3047
a33d1f77
AM		 3048 case R_PPC64_REL32:
3049 case R_PPC64_REL64:
3050 if (r_symndx >= symtab_hdr->sh_info)
3051 {
3052 struct ppc_link_hash_entry *eh;
3053 struct ppc_dyn_relocs **pp;
3054 struct ppc_dyn_relocs *p;
65f38f15 3055
a33d1f77
AM		 3056 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3057 eh = (struct ppc_link_hash_entry *) h;
65f38f15 3058
a33d1f77
AM		 3059 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3060 if (p->sec == sec)
3061 {
3062 p->pc_count -= 1;
3063 p->count -= 1;
3064 if (p->count == 0)
3065 *pp = p->next;
3066 break;
3067 }
3068 }
3069 break;
65f38f15 3070
a33d1f77
AM		 3071 case R_PPC64_ADDR14:
3072 case R_PPC64_ADDR14_BRNTAKEN:
3073 case R_PPC64_ADDR14_BRTAKEN:
3074 case R_PPC64_ADDR16:
3075 case R_PPC64_ADDR16_DS:
3076 case R_PPC64_ADDR16_HA:
3077 case R_PPC64_ADDR16_HI:
3078 case R_PPC64_ADDR16_HIGHER:
3079 case R_PPC64_ADDR16_HIGHERA:
3080 case R_PPC64_ADDR16_HIGHEST:
3081 case R_PPC64_ADDR16_HIGHESTA:
3082 case R_PPC64_ADDR16_LO:
3083 case R_PPC64_ADDR16_LO_DS:
3084 case R_PPC64_ADDR24:
3085 case R_PPC64_ADDR30:
3086 case R_PPC64_ADDR32:
3087 case R_PPC64_ADDR64:
3088 case R_PPC64_UADDR16:
3089 case R_PPC64_UADDR32:
3090 case R_PPC64_UADDR64:
3091 case R_PPC64_TOC:
3092 if (r_symndx >= symtab_hdr->sh_info)
3093 {
3094 struct ppc_link_hash_entry *eh;
3095 struct ppc_dyn_relocs **pp;
3096 struct ppc_dyn_relocs *p;
65f38f15 3097
a33d1f77
AM		 3098 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3099 eh = (struct ppc_link_hash_entry *) h;
3100
3101 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3102 if (p->sec == sec)
3103 {
3104 p->count -= 1;
3105 if (p->count == 0)
3106 *pp = p->next;
3107 break;
3108 }
3109 }
3110 break;
5bd4f169 3111
a33d1f77
AM		 3112 default:
3113 break;
3114 }
3115 }
5bd4f169
AM		 3116 return true;
3117}
3118
e86ce104
AM		 3119/* Called via elf_link_hash_traverse to transfer dynamic linking
3120 information on function code symbol entries to their corresponding
3121 function descriptor symbol entries. */
5bd4f169 3122static boolean
e86ce104 3123func_desc_adjust (h, inf)
5bd4f169 3124 struct elf_link_hash_entry *h;
e86ce104 3125 PTR inf;
5bd4f169 3126{
e86ce104 3127 struct bfd_link_info *info;
65f38f15 3128 struct ppc_link_hash_table *htab;
5bd4f169 3129
e92d460e 3130 if (h->root.type == bfd_link_hash_indirect)
e86ce104
AM		 3131 return true;
3132
e92d460e
AM		 3133 if (h->root.type == bfd_link_hash_warning)
3134 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3135
e86ce104 3136 info = (struct bfd_link_info *) inf;
65f38f15 3137 htab = ppc_hash_table (info);
5bd4f169 3138
e86ce104
AM		 3139 /* If this is a function code symbol, transfer dynamic linking
3140 information to the function descriptor symbol. */
3141 if (!((struct ppc_link_hash_entry *) h)->is_func)
3142 return true;
3143
805fc799
AM		 3144 if (h->root.type == bfd_link_hash_undefweak
3145 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
3146 htab->have_undefweak = true;
3147
e86ce104
AM		 3148 if (h->plt.refcount > 0
3149 && h->root.root.string[0] == '.'
3150 && h->root.root.string[1] != '\0')
5bd4f169 3151 {
721956f4 3152 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
e86ce104 3153 boolean force_local;
5bd4f169 3154
648cca2c
AM		 3155 /* Find the corresponding function descriptor symbol. Create it
3156 as undefined if necessary. */
5bd4f169 3157
721956f4
AM		 3158 if (fdh == NULL)
3159 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3160 false, false, true);
5bd4f169 3161
d926e03d
AM		 3162 if (fdh == NULL
3163 && info->shared
3164 && (h->root.type == bfd_link_hash_undefined
3165 || h->root.type == bfd_link_hash_undefweak))
648cca2c
AM		 3166 {
3167 bfd *abfd;
3168 asymbol *newsym;
3169
d926e03d 3170 abfd = h->root.u.undef.abfd;
648cca2c
AM		 3171 newsym = bfd_make_empty_symbol (abfd);
3172 newsym->name = h->root.root.string + 1;
3173 newsym->section = bfd_und_section_ptr;
3174 newsym->value = 0;
3175 newsym->flags = BSF_OBJECT;
3176 if (h->root.type == bfd_link_hash_undefweak)
3177 newsym->flags |= BSF_WEAK;
3178
3179 if ( !(_bfd_generic_link_add_one_symbol
3180 (info, abfd, newsym->name, newsym->flags,
3181 newsym->section, newsym->value, NULL, false, false,
3182 (struct bfd_link_hash_entry **) &fdh)))
3183 {
3184 return false;
3185 }
d926e03d 3186 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
648cca2c
AM		 3187 }
3188
e86ce104
AM		 3189 if (fdh != NULL
3190 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
3191 && (info->shared
3192 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3193 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
3194 {
3195 if (fdh->dynindx == -1)
3196 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
3197 return false;
e86ce104
AM		 3198 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
3199 & (ELF_LINK_HASH_REF_REGULAR
3200 | ELF_LINK_HASH_REF_DYNAMIC
3201 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
3202 | ELF_LINK_NON_GOT_REF));
e1fa50e7
AM		 3203 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3204 {
3205 fdh->plt.refcount = h->plt.refcount;
3206 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3207 }
e86ce104 3208 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
721956f4 3209 ((struct ppc_link_hash_entry *) fdh)->oh = h;
721956f4 3210 ((struct ppc_link_hash_entry *) h)->oh = fdh;
e86ce104
AM		 3211 }
3212
3213 /* Now that the info is on the function descriptor, clear the
3214 function code sym info. Any function code syms for which we
3215 don't have a definition in a regular file, we force local.
3216 This prevents a shared library from exporting syms that have
3217 been imported from another library. Function code syms that
3218 are really in the library we must leave global to prevent the
e1fa50e7 3219 linker dragging in a definition from a static library. */
ea1e4b0d
AM		 3220 force_local = (info->shared
3221 && ((h->elf_link_hash_flags
3222 & ELF_LINK_HASH_DEF_REGULAR) == 0
3223 || fdh == NULL
3224 || (fdh->elf_link_hash_flags
3225 & ELF_LINK_HASH_DEF_REGULAR) == 0
3226 || (fdh->elf_link_hash_flags
3227 & ELF_LINK_FORCED_LOCAL) != 0));
e86ce104
AM		 3228 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3229 }
3230
3231 return true;
3232}
40b8271b 3233
82bd7b59
AM		 3234#define MIN_SAVE_FPR 14
3235#define MAX_SAVE_FPR 31
3236
e86ce104 3237/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 3238 this hook to a) provide some gcc support functions, and b) transfer
3239 dynamic linking information gathered so far on function code symbol
3240 entries, to their corresponding function descriptor symbol entries. */
e86ce104
AM		 3241static boolean
3242ppc64_elf_func_desc_adjust (obfd, info)
3243 bfd *obfd ATTRIBUTE_UNUSED;
3244 struct bfd_link_info *info;
3245{
3246 struct ppc_link_hash_table *htab;
82bd7b59
AM		 3247 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
3248 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
3249 unsigned int i;
3250 struct elf_link_hash_entry *h;
721956f4 3251 bfd_byte *p;
82bd7b59 3252 char sym[10];
e86ce104
AM		 3253
3254 htab = ppc_hash_table (info);
82bd7b59
AM		 3255
3256 if (htab->sfpr == NULL)
3257 /* We don't have any relocs. */
3258 return true;
3259
3260 /* First provide any missing ._savef* and ._restf* functions. */
3261 memcpy (sym, "._savef14", 10);
3262 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3263 {
3264 sym[7] = i / 10 + '0';
3265 sym[8] = i % 10 + '0';
3266 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3267 if (h != NULL
3268 && h->root.type == bfd_link_hash_undefined)
3269 {
3270 if (lowest_savef > i)
3271 lowest_savef = i;
3272 h->root.type = bfd_link_hash_defined;
3273 h->root.u.def.section = htab->sfpr;
3274 h->root.u.def.value = (i - lowest_savef) * 4;
3275 h->type = STT_FUNC;
3276 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3277 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3278 }
3279 }
3280
3281 memcpy (sym, "._restf14", 10);
3282 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3283 {
3284 sym[7] = i / 10 + '0';
3285 sym[8] = i % 10 + '0';
3286 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3287 if (h != NULL
3288 && h->root.type == bfd_link_hash_undefined)
3289 {
3290 if (lowest_restf > i)
3291 lowest_restf = i;
3292 h->root.type = bfd_link_hash_defined;
3293 h->root.u.def.section = htab->sfpr;
3294 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3295 + (i - lowest_restf) * 4);
3296 h->type = STT_FUNC;
3297 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3298 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3299 }
3300 }
3301
805fc799
AM		 3302 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
3303
82bd7b59
AM		 3304 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3305 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
3306
3307 if (htab->sfpr->_raw_size == 0)
805fc799
AM		 3308 {
3309 if (!htab->have_undefweak)
3310 {
3311 _bfd_strip_section_from_output (info, htab->sfpr);
3312 return true;
3313 }
3314
3315 htab->sfpr->_raw_size = 4;
3316 }
82bd7b59 3317
721956f4
AM		 3318 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
3319 if (p == NULL)
3320 return false;
3321 htab->sfpr->contents = p;
3322
3323 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
3324 {
3325 unsigned int fpr = i << 21;
3326 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3327 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
3328 p += 4;
3329 }
3330 if (lowest_savef <= MAX_SAVE_FPR)
3331 {
82bd7b59
AM		 3332 bfd_put_32 (htab->elf.dynobj, BLR, p);
3333 p += 4;
721956f4 3334 }
82bd7b59 3335
721956f4
AM		 3336 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
3337 {
3338 unsigned int fpr = i << 21;
3339 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3340 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
82bd7b59
AM		 3341 p += 4;
3342 }
721956f4
AM		 3343 if (lowest_restf <= MAX_SAVE_FPR
3344 || htab->sfpr->_raw_size == 4)
3345 {
3346 bfd_put_32 (htab->elf.dynobj, BLR, p);
3347 }
82bd7b59 3348
e86ce104
AM		 3349 return true;
3350}
3351
3352/* Adjust a symbol defined by a dynamic object and referenced by a
3353 regular object. The current definition is in some section of the
3354 dynamic object, but we're not including those sections. We have to
3355 change the definition to something the rest of the link can
3356 understand. */
3357
3358static boolean
3359ppc64_elf_adjust_dynamic_symbol (info, h)
3360 struct bfd_link_info *info;
3361 struct elf_link_hash_entry *h;
3362{
3363 struct ppc_link_hash_table *htab;
3364 struct ppc_link_hash_entry * eh;
3365 struct ppc_dyn_relocs *p;
3366 asection *s;
3367 unsigned int power_of_two;
3368
3369 htab = ppc_hash_table (info);
3370
3371 /* Deal with function syms. */
3372 if (h->type == STT_FUNC
3373 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
3374 {
3375 /* Clear procedure linkage table information for any symbol that
3376 won't need a .plt entry. */
3377 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
3378 || h->plt.refcount <= 0
3379 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3380 || (! info->shared
3381 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
3382 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
40b8271b 3383 {
40b8271b
AM		 3384 h->plt.offset = (bfd_vma) -1;
3385 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
40b8271b 3386 }
5bd4f169
AM		 3387 return true;
3388 }
bbd7ec4a
AM		 3389 else
3390 h->plt.offset = (bfd_vma) -1;
5bd4f169
AM		 3391
3392 /* If this is a weak symbol, and there is a real definition, the
3393 processor independent code will have arranged for us to see the
3394 real definition first, and we can just use the same value. */
3395 if (h->weakdef != NULL)
3396 {
3397 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3398 || h->weakdef->root.type == bfd_link_hash_defweak);
3399 h->root.u.def.section = h->weakdef->root.u.def.section;
3400 h->root.u.def.value = h->weakdef->root.u.def.value;
0a991dfe 3401 return true;
5bd4f169
AM		 3402 }
3403
3404 /* This is a reference to a symbol defined by a dynamic object which
3405 is not a function. */
3406
3407 /* If we are creating a shared library, we must presume that the
3408 only references to the symbol are via the global offset table.
3409 For such cases we need not do anything here; the relocations will
3410 be handled correctly by relocate_section. */
3411 if (info->shared)
3412 return true;
3413
65f38f15
AM		 3414 /* If there are no references to this symbol that do not use the
3415 GOT, we don't need to generate a copy reloc. */
3416 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
3417 return true;
3418
3419 eh = (struct ppc_link_hash_entry *) h;
3420 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3421 {
3422 s = p->sec->output_section;
3423 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3424 break;
3425 }
3426
3427 /* If we didn't find any dynamic relocs in read-only sections, then
5d1634d7 3428 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
65f38f15
AM		 3429 if (p == NULL)
3430 {
3431 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
3432 return true;
3433 }
3434
5bd4f169
AM		 3435 /* We must allocate the symbol in our .dynbss section, which will
3436 become part of the .bss section of the executable. There will be
3437 an entry for this symbol in the .dynsym section. The dynamic
3438 object will contain position independent code, so all references
3439 from the dynamic object to this symbol will go through the global
3440 offset table. The dynamic linker will use the .dynsym entry to
3441 determine the address it must put in the global offset table, so
3442 both the dynamic object and the regular object will refer to the
3443 same memory location for the variable. */
5bd4f169
AM		 3444
3445 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3446 copy the initial value out of the dynamic object and into the
3447 runtime process image. We need to remember the offset into the
3448 .rela.bss section we are going to use. */
3449 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3450 {
65f38f15 3451 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169
AM		 3452 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
3453 }
3454
3455 /* We need to figure out the alignment required for this symbol. I
3456 have no idea how ELF linkers handle this. */
3457 power_of_two = bfd_log2 (h->size);
3458 if (power_of_two > 4)
3459 power_of_two = 4;
3460
3461 /* Apply the required alignment. */
65f38f15
AM		 3462 s = htab->sdynbss;
3463 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
3464 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 3465 {
65f38f15 3466 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5bd4f169
AM		 3467 return false;
3468 }
3469
3470 /* Define the symbol as being at this point in the section. */
3471 h->root.u.def.section = s;
3472 h->root.u.def.value = s->_raw_size;
3473
3474 /* Increment the section size to make room for the symbol. */
3475 s->_raw_size += h->size;
3476
3477 return true;
3478}
3479
e86ce104
AM		 3480/* If given a function descriptor symbol, hide both the function code
3481 sym and the descriptor. */
3482static void
3483ppc64_elf_hide_symbol (info, h, force_local)
3484 struct bfd_link_info *info;
3485 struct elf_link_hash_entry *h;
3486 boolean force_local;
3487{
3488 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3489
3490 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
3491 {
721956f4 3492 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
e86ce104 3493
721956f4 3494 if (fh == NULL)
d1329ca3
AM		 3495 {
3496 const char *p, *q;
3497 struct ppc_link_hash_table *htab;
3498 char save;
3499
3500 /* We aren't supposed to use alloca in BFD because on
3501 systems which do not have alloca the version in libiberty
3502 calls xmalloc, which might cause the program to crash
3503 when it runs out of memory. This function doesn't have a
3504 return status, so there's no way to gracefully return an
3505 error. So cheat. We know that string[-1] can be safely
3506 dereferenced; It's either a string in an ELF string
3507 table, or allocated in an objalloc structure. */
3508
3509 p = h->root.root.string - 1;
3510 save = *p;
3511 *(char *) p = '.';
3512 htab = ppc_hash_table (info);
3513 fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
3514 *(char *) p = save;
3515
3516 /* Unfortunately, if it so happens that the string we were
3517 looking for was allocated immediately before this string,
3518 then we overwrote the string terminator. That's the only
3519 reason the lookup should fail. */
3520 if (fh == NULL)
3521 {
3522 q = h->root.root.string + strlen (h->root.root.string);
3523 while (q >= h->root.root.string && *q == *p)
3524 --q, --p;
3525 if (q < h->root.root.string && *p == '.')
3526 fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
3527 }
3528 if (fh != NULL)
3529 {
3530 ((struct ppc_link_hash_entry *) h)->oh = fh;
3531 ((struct ppc_link_hash_entry *) fh)->oh = h;
3532 }
3533 }
e86ce104
AM		 3534 if (fh != NULL)
3535 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
3536 }
3537}
3538
1e2f5b6e
AM		 3539static boolean
3540edit_opd (obfd, info)
3541 bfd *obfd;
3542 struct bfd_link_info *info;
3543{
3544 bfd *ibfd;
3545 unsigned int bfd_indx;
1e2f5b6e
AM		 3546
3547 for (bfd_indx = 0, ibfd = info->input_bfds;
3548 ibfd != NULL;
3549 ibfd = ibfd->link_next, bfd_indx++)
3550 {
3551 asection *sec;
3552 Elf_Internal_Rela *relstart, *rel, *relend;
3553 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 3554 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 3555 struct elf_link_hash_entry **sym_hashes;
3556 bfd_vma offset;
3557 long *adjust;
3558 boolean need_edit;
3559
3560 sec = bfd_get_section_by_name (ibfd, ".opd");
3561 if (sec == NULL)
3562 continue;
3563
3564 adjust = (long *) elf_section_data (sec)->tdata;
3565 BFD_ASSERT (adjust != NULL);
3566 memset (adjust, 0, (size_t) sec->_raw_size * sizeof (long) / 24);
3567
3568 if (sec->output_section == bfd_abs_section_ptr)
3569 continue;
3570
3571 /* Look through the section relocs. */
3572 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
3573 continue;
3574
6cdc0ccc 3575 local_syms = NULL;
1e2f5b6e
AM		 3576 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3577 sym_hashes = elf_sym_hashes (ibfd);
3578
3579 /* Read the relocations. */
3580 relstart = _bfd_elf64_link_read_relocs (obfd, sec, (PTR) NULL,
3581 (Elf_Internal_Rela *) NULL,
3582 info->keep_memory);
3583 if (relstart == NULL)
3584 return false;
3585
3586 /* First run through the relocs to check they are sane, and to
3587 determine whether we need to edit this opd section. */
3588 need_edit = false;
3589 offset = 0;
3590 relend = relstart + sec->reloc_count;
3591 for (rel = relstart; rel < relend; rel++)
3592 {
3593 enum elf_ppc_reloc_type r_type;
3594 unsigned long r_symndx;
3595 asection *sym_sec;
3596 struct elf_link_hash_entry *h;
3597 Elf_Internal_Sym *sym;
3598
3599 /* .opd contains a regular array of 24 byte entries. We're
3600 only interested in the reloc pointing to a function entry
3601 point. */
3602 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3603 if (r_type == R_PPC64_TOC)
3604 continue;
3605
3606 if (r_type != R_PPC64_ADDR64)
3607 {
3608 (*_bfd_error_handler)
3609 (_("%s: unexpected reloc type %u in .opd section"),
3610 bfd_archive_filename (ibfd), r_type);
3611 need_edit = false;
3612 break;
3613 }
3614
3615 if (rel + 1 >= relend)
3616 continue;
3617 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
3618 if (r_type != R_PPC64_TOC)
3619 continue;
3620
3621 if (rel->r_offset != offset)
3622 {
3623 /* If someone messes with .opd alignment then after a
3624 "ld -r" we might have padding in the middle of .opd.
3625 Also, there's nothing to prevent someone putting
3626 something silly in .opd with the assembler. No .opd
3627 optimization for them! */
3628 (*_bfd_error_handler)
3629 (_("%s: .opd is not a regular array of opd entries"),
3630 bfd_archive_filename (ibfd));
3631 need_edit = false;
3632 break;
3633 }
3634
3635 r_symndx = ELF64_R_SYM (rel->r_info);
3636 sym_sec = NULL;
3637 h = NULL;
3638 sym = NULL;
3639 if (r_symndx >= symtab_hdr->sh_info)
3640 {
3641 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3642 while (h->root.type == bfd_link_hash_indirect
3643 || h->root.type == bfd_link_hash_warning)
3644 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3645 if (h->root.type == bfd_link_hash_defined
3646 || h->root.type == bfd_link_hash_defweak)
3647 sym_sec = h->root.u.def.section;
3648 }
3649 else
3650 {
6cdc0ccc
AM		 3651 if (local_syms == NULL)
3652 {
3653 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3654 if (local_syms == NULL)
3655 local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3656 symtab_hdr->sh_info, 0,
3657 NULL, NULL, NULL);
3658 if (local_syms == NULL)
3659 goto error_free_rel;
3660 }
3661 sym = local_syms + r_symndx;
1e2f5b6e
AM		 3662 if ((sym->st_shndx != SHN_UNDEF
3663 && sym->st_shndx < SHN_LORESERVE)
3664 || sym->st_shndx > SHN_HIRESERVE)
3665 sym_sec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
3666 }
3667
3668 if (sym_sec == NULL || sym_sec->owner == NULL)
3669 {
3670 (*_bfd_error_handler)
3671 (_("%s: undefined sym `%s' in .opd section"),
3672 bfd_archive_filename (ibfd),
3673 h != NULL ? h->root.root.string : "<local symbol>");
3674 need_edit = false;
3675 break;
3676 }
3677
3678 if (sym_sec->output_section == bfd_abs_section_ptr)
3679 {
3680 /* OK, we've found a function that's excluded from the
3681 link. */
3682 need_edit = true;
3683 }
3684
3685 offset += 24;
3686 }
3687
3688 if (need_edit)
3689 {
3690 Elf_Internal_Rela *write_rel;
3691 bfd_byte *rptr, *wptr;
3692 boolean skip;
3693
3694 /* This seems a waste of time as input .opd sections are all
3695 zeros as generated by gcc, but I suppose there's no reason
3696 this will always be so. We might start putting something in
3697 the third word of .opd entries. */
3698 if ((sec->flags & SEC_IN_MEMORY) == 0)
3699 {
3700 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
6cdc0ccc
AM		 3701 if (loc == NULL
3702 || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
3703 sec->_raw_size))
3704 {
3705 if (local_syms != NULL
3706 && symtab_hdr->contents != (unsigned char *) local_syms)
3707 free (local_syms);
3708 error_free_rel:
3709 if (elf_section_data (sec)->relocs != relstart)
3710 free (relstart);
3711 return false;
3712 }
1e2f5b6e
AM		 3713 sec->contents = loc;
3714 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
3715 }
3716
3717 elf_section_data (sec)->relocs = relstart;
3718
3719 wptr = sec->contents;
3720 rptr = sec->contents;
3721 write_rel = relstart;
3722 skip = false;
3723 offset = 0;
3724 for (rel = relstart; rel < relend; rel++)
3725 {
3726 if (rel->r_offset == offset)
3727 {
3728 unsigned long r_symndx;
3729 asection *sym_sec;
3730 struct elf_link_hash_entry *h;
3731 Elf_Internal_Sym *sym;
3732
3733 r_symndx = ELF64_R_SYM (rel->r_info);
3734 sym_sec = NULL;
3735 h = NULL;
3736 sym = NULL;
3737 if (r_symndx >= symtab_hdr->sh_info)
3738 {
3739 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3740 while (h->root.type == bfd_link_hash_indirect
3741 || h->root.type == bfd_link_hash_warning)
3742 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3743 if (h->root.type == bfd_link_hash_defined
3744 || h->root.type == bfd_link_hash_defweak)
3745 sym_sec = h->root.u.def.section;
3746 }
3747 else
3748 {
6cdc0ccc 3749 sym = local_syms + r_symndx;
1e2f5b6e
AM		 3750 if ((sym->st_shndx != SHN_UNDEF
3751 && sym->st_shndx < SHN_LORESERVE)
3752 || sym->st_shndx > SHN_HIRESERVE)
3753 sym_sec = bfd_section_from_elf_index (ibfd,
3754 sym->st_shndx);
3755 }
3756
3757 skip = sym_sec->output_section == bfd_abs_section_ptr;
a4aa0fb7
AM		 3758 if (skip)
3759 {
3760 if (h != NULL)
3761 {
3762 /* Arrange for the function descriptor sym
3763 to be dropped. */
3764 struct elf_link_hash_entry *fdh;
3765 struct ppc_link_hash_entry *fh;
3766
3767 fh = (struct ppc_link_hash_entry *) h;
3768 BFD_ASSERT (fh->is_func);
3769 fdh = fh->oh;
3770 fdh->root.u.def.value = 0;
3771 fdh->root.u.def.section = sym_sec;
3772 }
3773 }
3774 else
1e2f5b6e
AM		 3775 {
3776 /* We'll be keeping this opd entry. */
3777
3778 if (h != NULL)
3779 {
3780 /* Redefine the function descriptor symbol
3781 to this location in the opd section.
3782 We've checked above that opd relocs are
3783 ordered. */
3784 struct elf_link_hash_entry *fdh;
3785 struct ppc_link_hash_entry *fh;
3786
3787 fh = (struct ppc_link_hash_entry *) h;
3788 BFD_ASSERT (fh->is_func);
3789 fdh = fh->oh;
3790 fdh->root.u.def.value = wptr - sec->contents;
3791 }
3792 else
3793 {
6cdc0ccc
AM		 3794 /* Local syms are a bit tricky. We could
3795 tweak them as they can be cached, but
3796 we'd need to look through the local syms
3797 for the function descriptor sym which we
3798 don't have at the moment. So keep an
3799 array of adjustments. */
1e2f5b6e
AM		 3800 adjust[(rel->r_offset + wptr - rptr) / 24]
3801 = wptr - rptr;
3802 }
3803
3804 if (wptr != rptr)
3805 memcpy (wptr, rptr, 24);
3806 wptr += 24;
3807 }
3808 rptr += 24;
3809 offset += 24;
3810 }
3811
3812 /* We need to adjust any reloc offsets to point to the
3813 new opd entries. While we're at it, we may as well
3814 remove redundant relocs. */
3815 if (!skip)
3816 {
3817 rel->r_offset += wptr - rptr;
3818 if (write_rel != rel)
3819 memcpy (write_rel, rel, sizeof (*rel));
3820 ++write_rel;
3821 }
3822 }
3823
3824 sec->_cooked_size = wptr - sec->contents;
3825 sec->reloc_count = write_rel - relstart;
3826 }
6cdc0ccc 3827 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 3828 free (relstart);
6cdc0ccc
AM		 3829
3830 if (local_syms != NULL
3831 && symtab_hdr->contents != (unsigned char *) local_syms)
3832 {
3833 if (!info->keep_memory)
3834 free (local_syms);
3835 else
3836 symtab_hdr->contents = (unsigned char *) local_syms;
3837 }
1e2f5b6e
AM		 3838 }
3839
3840 return true;
3841}
3842
65f38f15
AM		 3843/* This is the condition under which ppc64_elf_finish_dynamic_symbol
3844 will be called from elflink.h. If elflink.h doesn't call our
3845 finish_dynamic_symbol routine, we'll need to do something about
3846 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
3847#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
3848 ((DYN) \
3849 && ((INFO)->shared \
3850 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
3851 && ((H)->dynindx != -1 \
3852 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5bd4f169 3853
65f38f15
AM		 3854/* Allocate space in .plt, .got and associated reloc sections for
3855 dynamic relocs. */
5bd4f169
AM		 3856
3857static boolean
65f38f15
AM		 3858allocate_dynrelocs (h, inf)
3859 struct elf_link_hash_entry *h;
3860 PTR inf;
5bd4f169 3861{
65f38f15
AM		 3862 struct bfd_link_info *info;
3863 struct ppc_link_hash_table *htab;
5bd4f169 3864 asection *s;
65f38f15
AM		 3865 struct ppc_link_hash_entry *eh;
3866 struct ppc_dyn_relocs *p;
5bd4f169 3867
e92d460e 3868 if (h->root.type == bfd_link_hash_indirect)
65f38f15 3869 return true;
5bd4f169 3870
e92d460e
AM		 3871 if (h->root.type == bfd_link_hash_warning)
3872 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3873
65f38f15
AM		 3874 info = (struct bfd_link_info *) inf;
3875 htab = ppc_hash_table (info);
5bd4f169 3876
65f38f15 3877 if (htab->elf.dynamic_sections_created
e86ce104
AM		 3878 && h->plt.refcount > 0
3879 && h->dynindx != -1)
5bd4f169 3880 {
e86ce104 3881 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5bd4f169 3882
65f38f15
AM		 3883 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
3884 {
65f38f15
AM		 3885 /* If this is the first .plt entry, make room for the special
3886 first entry. */
3887 s = htab->splt;
5bd4f169 3888 if (s->_raw_size == 0)
65f38f15
AM		 3889 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
3890
3891 h->plt.offset = s->_raw_size;
3892
3893 /* Make room for this entry. */
3894 s->_raw_size += PLT_ENTRY_SIZE;
3895
721956f4 3896 /* Make room for the .glink code. */
5d1634d7
AM		 3897 s = htab->sglink;
3898 if (s->_raw_size == 0)
3899 s->_raw_size += GLINK_CALL_STUB_SIZE;
3900 /* We need bigger stubs past index 32767. */
3901 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
3902 s->_raw_size += 4;
3903 s->_raw_size += 2*4;
65f38f15
AM		 3904
3905 /* We also need to make an entry in the .rela.plt section. */
3906 s = htab->srelplt;
3907 s->_raw_size += sizeof (Elf64_External_Rela);
3908 }
3909 else
3910 {
3911 h->plt.offset = (bfd_vma) -1;
3912 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3913 }
3914 }
3915 else
3916 {
3917 h->plt.offset = (bfd_vma) -1;
3918 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3919 }
3920
3921 if (h->got.refcount > 0)
3922 {
3923 boolean dyn;
3924
3925 /* Make sure this symbol is output as a dynamic symbol.
3926 Undefined weak syms won't yet be marked as dynamic. */
3927 if (h->dynindx == -1
3928 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3929 {
3930 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
3931 return false;
3932 }
3933
3934 s = htab->sgot;
3935 h->got.offset = s->_raw_size;
3936 s->_raw_size += 8;
3937 dyn = htab->elf.dynamic_sections_created;
3938 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
3939 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
3940 }
3941 else
3942 h->got.offset = (bfd_vma) -1;
3943
3944 eh = (struct ppc_link_hash_entry *) h;
3945 if (eh->dyn_relocs == NULL)
3946 return true;
3947
3948 /* In the shared -Bsymbolic case, discard space allocated for
3949 dynamic pc-relative relocs against symbols which turn out to be
3950 defined in regular objects. For the normal shared case, discard
3951 space for relocs that have become local due to symbol visibility
3952 changes. */
3953
3954 if (info->shared)
3955 {
3956 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
3957 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3958 || info->symbolic))
3959 {
3960 struct ppc_dyn_relocs **pp;
3961
3962 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 3963 {
65f38f15
AM		 3964 p->count -= p->pc_count;
3965 p->pc_count = 0;
3966 if (p->count == 0)
3967 *pp = p->next;
3968 else
3969 pp = &p->next;
5bd4f169 3970 }
65f38f15
AM		 3971 }
3972 }
3973 else
3974 {
3975 /* For the non-shared case, discard space for relocs against
3976 symbols which turn out to need copy relocs or are not
3977 dynamic. */
3978
3979 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3980 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3981 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3982 || (htab->elf.dynamic_sections_created
3983 && (h->root.type == bfd_link_hash_undefweak
3984 || h->root.type == bfd_link_hash_undefined))))
3985 {
3986 /* Make sure this symbol is output as a dynamic symbol.
3987 Undefined weak syms won't yet be marked as dynamic. */
3988 if (h->dynindx == -1
3989 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3990 {
ec338859 3991 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
65f38f15
AM		 3992 return false;
3993 }
3994
3995 /* If that succeeded, we know we'll be keeping all the
3996 relocs. */
3997 if (h->dynindx != -1)
3998 goto keep;
3999 }
4000
4001 eh->dyn_relocs = NULL;
4002
ec338859 4003 keep: ;
65f38f15
AM		 4004 }
4005
4006 /* Finally, allocate space. */
4007 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4008 {
4009 asection *sreloc = elf_section_data (p->sec)->sreloc;
4010 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
4011 }
4012
4013 return true;
4014}
4015
4016/* Find any dynamic relocs that apply to read-only sections. */
4017
4018static boolean
4019readonly_dynrelocs (h, inf)
4020 struct elf_link_hash_entry *h;
4021 PTR inf;
4022{
4023 struct ppc_link_hash_entry *eh;
4024 struct ppc_dyn_relocs *p;
4025
e92d460e
AM		 4026 if (h->root.type == bfd_link_hash_warning)
4027 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4028
65f38f15
AM		 4029 eh = (struct ppc_link_hash_entry *) h;
4030 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4031 {
4032 asection *s = p->sec->output_section;
4033
4034 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4035 {
4036 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4037
4038 info->flags |= DF_TEXTREL;
4039
4040 /* Not an error, just cut short the traversal. */
4041 return false;
4042 }
4043 }
4044 return true;
4045}
4046
4047/* Set the sizes of the dynamic sections. */
4048
4049static boolean
4050ppc64_elf_size_dynamic_sections (output_bfd, info)
4051 bfd *output_bfd ATTRIBUTE_UNUSED;
4052 struct bfd_link_info *info;
4053{
4054 struct ppc_link_hash_table *htab;
4055 bfd *dynobj;
4056 asection *s;
4057 boolean relocs;
4058 bfd *ibfd;
4059
4060 htab = ppc_hash_table (info);
4061 dynobj = htab->elf.dynobj;
4062 if (dynobj == NULL)
4063 abort ();
4064
4065 if (htab->elf.dynamic_sections_created)
4066 {
4067 /* Set the contents of the .interp section to the interpreter. */
4068 if (! info->shared)
4069 {
4070 s = bfd_get_section_by_name (dynobj, ".interp");
4071 if (s == NULL)
4072 abort ();
4073 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4074 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4075 }
4076 }
4077
4078 /* Set up .got offsets for local syms, and space for local dynamic
4079 relocs. */
4080 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4081 {
4082 bfd_signed_vma *local_got;
4083 bfd_signed_vma *end_local_got;
4084 bfd_size_type locsymcount;
4085 Elf_Internal_Shdr *symtab_hdr;
4086 asection *srel;
4087
4088 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4089 continue;
4090
4091 for (s = ibfd->sections; s != NULL; s = s->next)
4092 {
ec338859 4093 struct ppc_dyn_relocs *p;
65f38f15 4094
ec338859
AM		 4095 for (p = *((struct ppc_dyn_relocs **)
4096 &elf_section_data (s)->local_dynrel);
4097 p != NULL;
4098 p = p->next)
65f38f15 4099 {
ec338859
AM		 4100 if (!bfd_is_abs_section (p->sec)
4101 && bfd_is_abs_section (p->sec->output_section))
4102 {
4103 /* Input section has been discarded, either because
4104 it is a copy of a linkonce section or due to
4105 linker script /DISCARD/, so we'll be discarding
4106 the relocs too. */
4107 }
248866a8 4108 else if (p->count != 0)
ec338859
AM		 4109 {
4110 srel = elf_section_data (p->sec)->sreloc;
4111 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 4112 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
4113 info->flags |= DF_TEXTREL;
ec338859 4114 }
65f38f15
AM		 4115 }
4116 }
4117
4118 local_got = elf_local_got_refcounts (ibfd);
4119 if (!local_got)
4120 continue;
4121
4122 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4123 locsymcount = symtab_hdr->sh_info;
4124 end_local_got = local_got + locsymcount;
4125 s = htab->sgot;
4126 srel = htab->srelgot;
4127 for (; local_got < end_local_got; ++local_got)
4128 {
4129 if (*local_got > 0)
5bd4f169 4130 {
65f38f15
AM		 4131 *local_got = s->_raw_size;
4132 s->_raw_size += 8;
4133 if (info->shared)
4134 srel->_raw_size += sizeof (Elf64_External_Rela);
5bd4f169 4135 }
65f38f15
AM		 4136 else
4137 *local_got = (bfd_vma) -1;
4138 }
4139 }
4140
1e2f5b6e
AM		 4141 if (!edit_opd (output_bfd, info))
4142 return false;
4143
65f38f15
AM		 4144 /* Allocate global sym .plt and .got entries, and space for global
4145 sym dynamic relocs. */
4146 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
4147
4148 /* We now have determined the sizes of the various dynamic sections.
4149 Allocate memory for them. */
4150 relocs = false;
4151 for (s = dynobj->sections; s != NULL; s = s->next)
4152 {
4153 if ((s->flags & SEC_LINKER_CREATED) == 0)
4154 continue;
4155
721956f4
AM		 4156 if (s == htab->sbrlt || s == htab->srelbrlt)
4157 /* These haven't been allocated yet; don't strip. */
4158 continue;
4159 else if (s == htab->splt
4160 || s == htab->sgot
4161 || s == htab->sglink)
65f38f15
AM		 4162 {
4163 /* Strip this section if we don't need it; see the
4164 comment below. */
5bd4f169 4165 }
65f38f15 4166 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5bd4f169
AM		 4167 {
4168 if (s->_raw_size == 0)
4169 {
4170 /* If we don't need this section, strip it from the
4171 output file. This is mostly to handle .rela.bss and
4172 .rela.plt. We must create both sections in
4173 create_dynamic_sections, because they must be created
4174 before the linker maps input sections to output
4175 sections. The linker does that before
4176 adjust_dynamic_symbol is called, and it is that
4177 function which decides whether anything needs to go
4178 into these sections. */
5bd4f169
AM		 4179 }
4180 else
4181 {
65f38f15
AM		 4182 if (s != htab->srelplt)
4183 relocs = true;
5bd4f169
AM		 4184
4185 /* We use the reloc_count field as a counter if we need
4186 to copy relocs into the output file. */
4187 s->reloc_count = 0;
4188 }
4189 }
65f38f15 4190 else
5bd4f169
AM		 4191 {
4192 /* It's not one of our sections, so don't allocate space. */
4193 continue;
4194 }
4195
65f38f15 4196 if (s->_raw_size == 0)
5bd4f169
AM		 4197 {
4198 _bfd_strip_section_from_output (info, s);
4199 continue;
4200 }
4201
5f333394
AM		 4202 /* .plt is in the bss section. We don't initialise it. */
4203 if ((s->flags & SEC_LOAD) == 0)
4204 continue;
4205
65f38f15
AM		 4206 /* Allocate memory for the section contents. We use bfd_zalloc
4207 here in case unused entries are not reclaimed before the
4208 section's contents are written out. This should not happen,
4209 but this way if it does, we get a R_PPC64_NONE reloc instead
4210 of garbage. */
721956f4 4211 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
65f38f15 4212 if (s->contents == NULL)
5bd4f169
AM		 4213 return false;
4214 }
4215
e86ce104 4216 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 4217 {
4218 /* Add some entries to the .dynamic section. We fill in the
4219 values later, in ppc64_elf_finish_dynamic_sections, but we
4220 must add the entries now so that we get the correct size for
4221 the .dynamic section. The DT_DEBUG entry is filled in by the
4222 dynamic linker and used by the debugger. */
dc810e39
AM		 4223#define add_dynamic_entry(TAG, VAL) \
4224 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
4225
4226 if (!info->shared)
5bd4f169 4227 {
dc810e39 4228 if (!add_dynamic_entry (DT_DEBUG, 0))
5bd4f169
AM		 4229 return false;
4230 }
4231
9c07fe7c 4232 if (htab->splt != NULL && htab->splt->_raw_size != 0)
5bd4f169 4233 {
dc810e39
AM		 4234 if (!add_dynamic_entry (DT_PLTGOT, 0)
4235 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4236 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 4237 || !add_dynamic_entry (DT_JMPREL, 0)
4238 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5bd4f169
AM		 4239 return false;
4240 }
4241
19397422
AM		 4242 if (NO_OPD_RELOCS)
4243 {
4244 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
4245 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
4246 return false;
4247 }
4248
5bd4f169
AM		 4249 if (relocs)
4250 {
dc810e39
AM		 4251 if (!add_dynamic_entry (DT_RELA, 0)
4252 || !add_dynamic_entry (DT_RELASZ, 0)
4253 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5bd4f169 4254 return false;
5bd4f169 4255
65f38f15
AM		 4256 /* If any dynamic relocs apply to a read-only section,
4257 then we need a DT_TEXTREL entry. */
248866a8
AM		 4258 if ((info->flags & DF_TEXTREL) == 0)
4259 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
4260 (PTR) info);
5bd4f169 4261
65f38f15 4262 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 4263 {
65f38f15
AM		 4264 if (!add_dynamic_entry (DT_TEXTREL, 0))
4265 return false;
5bd4f169 4266 }
5bd4f169 4267 }
5bd4f169 4268 }
65f38f15 4269#undef add_dynamic_entry
5bd4f169
AM		 4270
4271 return true;
4272}
4273
721956f4 4274/* Determine the type of stub needed, if any, for a call. */
5bd4f169 4275
721956f4
AM		 4276static INLINE enum ppc_stub_type
4277ppc_type_of_stub (input_sec, rel, hash, destination)
4278 asection *input_sec;
4279 const Elf_Internal_Rela *rel;
4280 struct ppc_link_hash_entry **hash;
4281 bfd_vma destination;
5bd4f169 4282{
721956f4
AM		 4283 struct ppc_link_hash_entry *h = *hash;
4284 bfd_vma location;
4285 bfd_vma branch_offset;
4286 bfd_vma max_branch_offset;
4287 unsigned int r_type;
5bd4f169 4288
721956f4
AM		 4289 if (h != NULL)
4290 {
4291 if (h->oh != NULL
4292 && h->oh->plt.offset != (bfd_vma) -1
4293 && h->oh->dynindx != -1)
5bd4f169 4294 {
721956f4
AM		 4295 *hash = (struct ppc_link_hash_entry *) h->oh;
4296 return ppc_stub_plt_call;
5bd4f169
AM		 4297 }
4298
721956f4
AM		 4299 if (h->elf.root.type == bfd_link_hash_undefweak
4300 || h->elf.root.type == bfd_link_hash_undefined)
4301 return ppc_stub_none;
5d1634d7 4302 }
5d1634d7 4303
721956f4
AM		 4304 /* Determine where the call point is. */
4305 location = (input_sec->output_offset
4306 + input_sec->output_section->vma
4307 + rel->r_offset);
5d1634d7 4308
721956f4
AM		 4309 branch_offset = destination - location;
4310 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 4311
721956f4
AM		 4312 /* Determine if a long branch stub is needed. */
4313 max_branch_offset = 1 << 25;
4314 if (r_type != (unsigned int) R_PPC64_REL24)
4315 max_branch_offset = 1 << 15;
5d1634d7 4316
721956f4
AM		 4317 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
4318 /* We need a stub. Figure out whether a long_branch or plt_branch
4319 is needed later. */
4320 return ppc_stub_long_branch;
5d1634d7 4321
721956f4 4322 return ppc_stub_none;
5d1634d7
AM		 4323}
4324
4325/* Build a .plt call stub. */
4326
4327static bfd_byte *
4328build_plt_stub (obfd, p, offset, glink)
4329 bfd *obfd;
4330 bfd_byte *p;
4331 int offset;
4332 int glink;
4333{
4334#define PPC_LO(v) ((v) & 0xffff)
4335#define PPC_HI(v) (((v) >> 16) & 0xffff)
4336#define PPC_HA(v) PPC_HI ((v) + 0x8000)
4337
4338 if (glink)
4339 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
4340 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
4341 if (!glink)
4342 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
4343 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4344 if (PPC_HA (offset + 8) != PPC_HA (offset))
4345 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4346 offset += 8;
4347 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
4348 if (PPC_HA (offset + 8) != PPC_HA (offset))
4349 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4350 offset += 8;
4351 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
4352 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4353 bfd_put_32 (obfd, BCTR, p), p += 4;
4354 return p;
4355}
4356
5d1634d7 4357static boolean
721956f4
AM		 4358ppc_build_one_stub (gen_entry, in_arg)
4359 struct bfd_hash_entry *gen_entry;
4360 PTR in_arg;
5d1634d7 4361{
721956f4
AM		 4362 struct ppc_stub_hash_entry *stub_entry;
4363 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 4364 struct bfd_link_info *info;
4365 struct ppc_link_hash_table *htab;
721956f4
AM		 4366 asection *stub_sec;
4367 bfd *stub_bfd;
4368 bfd_byte *loc;
4369 bfd_byte *p;
4370 unsigned int indx;
4371 bfd_vma off;
4372 int size;
5d1634d7 4373
721956f4
AM		 4374 /* Massage our args to the form they really have. */
4375 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4376 info = (struct bfd_link_info *) in_arg;
5d1634d7 4377
5d1634d7 4378 htab = ppc_hash_table (info);
721956f4 4379 stub_sec = stub_entry->stub_sec;
5d1634d7 4380
721956f4
AM		 4381 /* Make a note of the offset within the stubs for this entry. */
4382 stub_entry->stub_offset = stub_sec->_cooked_size;
4383 loc = stub_sec->contents + stub_entry->stub_offset;
4384
4385 stub_bfd = stub_sec->owner;
4386
4387 switch (stub_entry->stub_type)
5d1634d7 4388 {
721956f4
AM		 4389 case ppc_stub_long_branch:
4390 /* Branches are relative. This is where we are going to. */
4391 off = (stub_entry->target_value
4392 + stub_entry->target_section->output_offset
4393 + stub_entry->target_section->output_section->vma);
5d1634d7 4394
721956f4
AM		 4395 /* And this is where we are coming from. */
4396 off -= (stub_entry->stub_offset
4397 + stub_sec->output_offset
4398 + stub_sec->output_section->vma);
e86ce104 4399
721956f4 4400 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
e86ce104 4401
721956f4
AM		 4402 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
4403 size = 4;
4404 break;
e86ce104 4405
721956f4
AM		 4406 case ppc_stub_plt_branch:
4407 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4408 stub_entry->root.string + 9,
4409 false, false);
4410 if (br_entry == NULL)
4411 {
4412 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
4413 stub_entry->root.string + 9);
4414 htab->stub_error = true;
4415 return false;
4416 }
4417
4418 off = (stub_entry->target_value
4419 + stub_entry->target_section->output_offset
4420 + stub_entry->target_section->output_section->vma);
4421
4422 bfd_put_64 (htab->sbrlt->owner, off,
4423 htab->sbrlt->contents + br_entry->offset);
4424
4425 if (info->shared)
4426 {
4427 /* Create a reloc for the branch lookup table entry. */
4428 Elf_Internal_Rela rela;
4429 Elf64_External_Rela *r;
5d1634d7 4430
721956f4
AM		 4431 rela.r_offset = (br_entry->offset
4432 + htab->sbrlt->output_offset
4433 + htab->sbrlt->output_section->vma);
4434 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4435 rela.r_addend = off;
4436
4437 r = (Elf64_External_Rela *) htab->srelbrlt->contents;
4438 r += htab->srelbrlt->reloc_count++;
4439 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r);
4440 }
4441
4442 off = (br_entry->offset
4443 + htab->sbrlt->output_offset
4444 + htab->sbrlt->output_section->vma
4445 - elf_gp (htab->sbrlt->output_section->owner)
4446 - TOC_BASE_OFF);
4447
4448 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 4449 {
4450 (*_bfd_error_handler)
e86ce104 4451 (_("linkage table error against `%s'"),
721956f4 4452 stub_entry->root.string);
5d1634d7 4453 bfd_set_error (bfd_error_bad_value);
721956f4 4454 htab->stub_error = true;
5d1634d7
AM		 4455 return false;
4456 }
41bd81ab 4457
721956f4
AM		 4458 indx = off;
4459 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
4460 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
4461 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
4462 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
4463 size = 16;
4464 break;
5d1634d7 4465
721956f4 4466 case ppc_stub_plt_call:
5d1634d7 4467 /* Build the .glink lazy link call stub. */
721956f4
AM		 4468 p = htab->sglink->contents + htab->sglink->_cooked_size;
4469 indx = htab->sglink->reloc_count;
5d1634d7
AM		 4470 if (indx < 0x8000)
4471 {
721956f4 4472 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
5d1634d7
AM		 4473 p += 4;
4474 }
4475 else
4476 {
721956f4 4477 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
5d1634d7 4478 p += 4;
721956f4 4479 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
5d1634d7
AM		 4480 p += 4;
4481 }
721956f4
AM		 4482 bfd_put_32 (htab->sglink->owner,
4483 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
5d1634d7 4484 p += 4;
721956f4
AM		 4485 htab->sglink->_cooked_size = p - htab->sglink->contents;
4486 htab->sglink->reloc_count += 1;
4487
c862ae31
AM		 4488 /* Do the best we can for shared libraries built without
4489 exporting ".foo" for each "foo". This can happen when symbol
4490 versioning scripts strip all bar a subset of symbols. */
4491 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
4492 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
4493 {
4494 /* Point the symbol at the stub. There may be multiple stubs,
4495 we don't really care; The main thing is to make this sym
4496 defined somewhere. */
4497 stub_entry->h->oh->root.type = bfd_link_hash_defined;
4498 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
4499 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
4500 }
4501
721956f4
AM		 4502 /* Now build the stub. */
4503 off = stub_entry->h->elf.plt.offset;
4504 if (off >= (bfd_vma) -2)
4505 abort ();
4506
4507 off &= ~ (bfd_vma) 1;
4508 off += (htab->splt->output_offset
4509 + htab->splt->output_section->vma
4510 - elf_gp (htab->splt->output_section->owner)
4511 - TOC_BASE_OFF);
4512
4513 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
4514 {
4515 (*_bfd_error_handler)
4516 (_("linkage table error against `%s'"),
4517 stub_entry->h->elf.root.root.string);
4518 bfd_set_error (bfd_error_bad_value);
4519 htab->stub_error = true;
4520 return false;
4521 }
4522
4523 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
4524 size = p - loc;
4525 break;
4526
4527 default:
4528 BFD_FAIL ();
4529 return false;
4530 }
4531
4532 stub_sec->_cooked_size += size;
4533 return true;
4534}
4535
4536/* As above, but don't actually build the stub. Just bump offset so
4537 we know stub section sizes, and select plt_branch stubs where
4538 long_branch stubs won't do. */
4539
4540static boolean
4541ppc_size_one_stub (gen_entry, in_arg)
4542 struct bfd_hash_entry *gen_entry;
4543 PTR in_arg;
4544{
4545 struct ppc_stub_hash_entry *stub_entry;
4546 struct ppc_link_hash_table *htab;
4547 bfd_vma off;
4548 int size;
4549
4550 /* Massage our args to the form they really have. */
4551 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4552 htab = (struct ppc_link_hash_table *) in_arg;
4553
4554 if (stub_entry->stub_type == ppc_stub_plt_call)
4555 {
4556 off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1;
4557 off += (htab->splt->output_offset
4558 + htab->splt->output_section->vma
4559 - elf_gp (htab->splt->output_section->owner)
4560 - TOC_BASE_OFF);
4561
4562 size = 28;
4563 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
4564 size += 4;
4565 }
4566 else
4567 {
4568 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
4569 stub_entry->stub_type = ppc_stub_long_branch;
4570 size = 4;
4571
4572 off = (stub_entry->target_value
4573 + stub_entry->target_section->output_offset
4574 + stub_entry->target_section->output_section->vma);
4575 off -= (stub_entry->stub_sec->_raw_size
4576 + stub_entry->stub_sec->output_offset
4577 + stub_entry->stub_sec->output_section->vma);
4578
4579 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
4580 {
4581 struct ppc_branch_hash_entry *br_entry;
4582
4583 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4584 stub_entry->root.string + 9,
4585 true, false);
4586 if (br_entry == NULL)
4587 {
4588 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
4589 stub_entry->root.string + 9);
4590 htab->stub_error = true;
4591 return false;
4592 }
4593
4594 if (br_entry->iter != htab->stub_iteration)
4595 {
4596 br_entry->iter = htab->stub_iteration;
4597 br_entry->offset = htab->sbrlt->_raw_size;
4598 htab->sbrlt->_raw_size += 8;
4599 }
4600 stub_entry->stub_type = ppc_stub_plt_branch;
4601 size = 16;
4602 }
4603 }
4604
4605 stub_entry->stub_sec->_raw_size += size;
4606 return true;
4607}
4608
4609/* Set up various things so that we can make a list of input sections
4610 for each output section included in the link. Returns -1 on error,
cedb70c5 4611 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 4612
4613int
4614ppc64_elf_setup_section_lists (output_bfd, info)
4615 bfd *output_bfd;
4616 struct bfd_link_info *info;
4617{
4618 bfd *input_bfd;
721956f4
AM		 4619 int top_id, top_index;
4620 asection *section;
4621 asection **input_list, **list;
4622 bfd_size_type amt;
4623 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4624
805fc799
AM		 4625 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
4626 || htab->sbrlt == NULL)
721956f4
AM		 4627 return 0;
4628
1e2f5b6e
AM		 4629 /* Find the top input section id. */
4630 for (input_bfd = info->input_bfds, top_id = 0;
721956f4
AM		 4631 input_bfd != NULL;
4632 input_bfd = input_bfd->link_next)
4633 {
721956f4
AM		 4634 for (section = input_bfd->sections;
4635 section != NULL;
4636 section = section->next)
4637 {
4638 if (top_id < section->id)
4639 top_id = section->id;
4640 }
4641 }
721956f4
AM		 4642
4643 amt = sizeof (struct map_stub) * (top_id + 1);
4644 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
4645 if (htab->stub_group == NULL)
4646 return -1;
4647
4648 /* We can't use output_bfd->section_count here to find the top output
4649 section index as some sections may have been removed, and
4650 _bfd_strip_section_from_output doesn't renumber the indices. */
4651 for (section = output_bfd->sections, top_index = 0;
4652 section != NULL;
4653 section = section->next)
4654 {
4655 if (top_index < section->index)
4656 top_index = section->index;
4657 }
4658
4659 htab->top_index = top_index;
4660 amt = sizeof (asection *) * (top_index + 1);
4661 input_list = (asection **) bfd_malloc (amt);
4662 htab->input_list = input_list;
4663 if (input_list == NULL)
4664 return -1;
4665
4666 /* For sections we aren't interested in, mark their entries with a
4667 value we can check later. */
4668 list = input_list + top_index;
4669 do
4670 *list = bfd_abs_section_ptr;
4671 while (list-- != input_list);
4672
4673 for (section = output_bfd->sections;
4674 section != NULL;
4675 section = section->next)
4676 {
4677 if ((section->flags & SEC_CODE) != 0)
4678 input_list[section->index] = NULL;
4679 }
4680
4681 return 1;
4682}
4683
4684/* The linker repeatedly calls this function for each input section,
4685 in the order that input sections are linked into output sections.
4686 Build lists of input sections to determine groupings between which
4687 we may insert linker stubs. */
4688
4689void
805fc799 4690ppc64_elf_next_input_section (info, isec)
721956f4
AM		 4691 struct bfd_link_info *info;
4692 asection *isec;
4693{
4694 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4695
805fc799 4696 if (isec->output_section->index <= htab->top_index)
721956f4
AM		 4697 {
4698 asection **list = htab->input_list + isec->output_section->index;
4699 if (*list != bfd_abs_section_ptr)
4700 {
4701 /* Steal the link_sec pointer for our list. */
4702#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
4703 /* This happens to make the list in reverse order,
4704 which is what we want. */
4705 PREV_SEC (isec) = *list;
4706 *list = isec;
4707 }
4708 }
4709}
4710
4711/* See whether we can group stub sections together. Grouping stub
4712 sections may result in fewer stubs. More importantly, we need to
4713 put all .init* and .fini* stubs at the beginning of the .init or
4714 .fini output sections respectively, because glibc splits the
4715 _init and _fini functions into multiple parts. Putting a stub in
4716 the middle of a function is not a good idea. */
4717
4718static void
4719group_sections (htab, stub_group_size, stubs_always_before_branch)
4720 struct ppc_link_hash_table *htab;
4721 bfd_size_type stub_group_size;
4722 boolean stubs_always_before_branch;
4723{
4724 asection **list = htab->input_list + htab->top_index;
4725 do
4726 {
4727 asection *tail = *list;
4728 if (tail == bfd_abs_section_ptr)
4729 continue;
4730 while (tail != NULL)
4731 {
4732 asection *curr;
4733 asection *prev;
4734 bfd_size_type total;
4735
4736 curr = tail;
4737 if (tail->_cooked_size)
4738 total = tail->_cooked_size;
4739 else
4740 total = tail->_raw_size;
4741 while ((prev = PREV_SEC (curr)) != NULL
4742 && ((total += curr->output_offset - prev->output_offset)
4743 < stub_group_size))
4744 curr = prev;
4745
4746 /* OK, the size from the start of CURR to the end is less
4747 than stub_group_size and thus can be handled by one stub
4748 section. (or the tail section is itself larger than
4749 stub_group_size, in which case we may be toast.) We
4750 should really be keeping track of the total size of stubs
4751 added here, as stubs contribute to the final output
4752 section size. That's a little tricky, and this way will
4753 only break if stubs added make the total size more than
4754 2^25, ie. for the default stub_group_size, if stubs total
4755 more than 2834432 bytes, or over 100000 plt call stubs. */
4756 do
4757 {
4758 prev = PREV_SEC (tail);
4759 /* Set up this stub group. */
4760 htab->stub_group[tail->id].link_sec = curr;
4761 }
4762 while (tail != curr && (tail = prev) != NULL);
4763
4764 /* But wait, there's more! Input sections up to stub_group_size
4765 bytes before the stub section can be handled by it too. */
4766 if (!stubs_always_before_branch)
4767 {
4768 total = 0;
4769 while (prev != NULL
4770 && ((total += tail->output_offset - prev->output_offset)
4771 < stub_group_size))
4772 {
4773 tail = prev;
4774 prev = PREV_SEC (tail);
4775 htab->stub_group[tail->id].link_sec = curr;
4776 }
4777 }
4778 tail = prev;
4779 }
4780 }
4781 while (list-- != htab->input_list);
4782 free (htab->input_list);
4783#undef PREV_SEC
4784}
4785
721956f4
AM		 4786/* Determine and set the size of the stub section for a final link.
4787
4788 The basic idea here is to examine all the relocations looking for
4789 PC-relative calls to a target that is unreachable with a "bl"
4790 instruction. */
4791
4792boolean
4793ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
4794 add_stub_section, layout_sections_again)
4795 bfd *output_bfd;
4796 bfd *stub_bfd;
4797 struct bfd_link_info *info;
4798 bfd_signed_vma group_size;
4799 asection * (*add_stub_section) PARAMS ((const char *, asection *));
4800 void (*layout_sections_again) PARAMS ((void));
4801{
4802 bfd_size_type stub_group_size;
4803 boolean stubs_always_before_branch;
721956f4
AM		 4804 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4805
4806 /* Stash our params away. */
4807 htab->stub_bfd = stub_bfd;
4808 htab->add_stub_section = add_stub_section;
4809 htab->layout_sections_again = layout_sections_again;
4810 stubs_always_before_branch = group_size < 0;
4811 if (group_size < 0)
4812 stub_group_size = -group_size;
4813 else
4814 stub_group_size = group_size;
4815 if (stub_group_size == 1)
4816 {
4817 /* Default values. */
4818 stub_group_size = 30720000;
4819 if (htab->has_14bit_branch)
4820 stub_group_size = 30000;
4821 }
4822
4823 group_sections (htab, stub_group_size, stubs_always_before_branch);
4824
721956f4
AM		 4825 while (1)
4826 {
4827 bfd *input_bfd;
4828 unsigned int bfd_indx;
4829 asection *stub_sec;
4830 boolean stub_changed;
4831
4832 htab->stub_iteration += 1;
4833 stub_changed = false;
4834
4835 for (input_bfd = info->input_bfds, bfd_indx = 0;
4836 input_bfd != NULL;
4837 input_bfd = input_bfd->link_next, bfd_indx++)
4838 {
4839 Elf_Internal_Shdr *symtab_hdr;
4840 asection *section;
6cdc0ccc 4841 Elf_Internal_Sym *local_syms = NULL;
721956f4
AM		 4842
4843 /* We'll need the symbol table in a second. */
4844 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4845 if (symtab_hdr->sh_info == 0)
4846 continue;
4847
721956f4
AM		 4848 /* Walk over each section attached to the input bfd. */
4849 for (section = input_bfd->sections;
4850 section != NULL;
4851 section = section->next)
4852 {
721956f4 4853 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 4854
4855 /* If there aren't any relocs, then there's nothing more
4856 to do. */
4857 if ((section->flags & SEC_RELOC) == 0
4858 || section->reloc_count == 0)
4859 continue;
4860
4861 /* If this section is a link-once section that will be
4862 discarded, then don't create any stubs. */
4863 if (section->output_section == NULL
4864 || section->output_section->owner != output_bfd)
4865 continue;
4866
1e2f5b6e
AM		 4867 /* Get the relocs. */
4868 internal_relocs
4869 = _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
4870 (Elf_Internal_Rela *) NULL,
4871 info->keep_memory);
721956f4 4872 if (internal_relocs == NULL)
1e2f5b6e 4873 goto error_ret_free_local;
721956f4
AM		 4874
4875 /* Now examine each relocation. */
4876 irela = internal_relocs;
4877 irelaend = irela + section->reloc_count;
4878 for (; irela < irelaend; irela++)
4879 {
4880 unsigned int r_type, r_indx;
4881 enum ppc_stub_type stub_type;
4882 struct ppc_stub_hash_entry *stub_entry;
4883 asection *sym_sec;
4884 bfd_vma sym_value;
4885 bfd_vma destination;
4886 struct ppc_link_hash_entry *hash;
4887 char *stub_name;
4888 const asection *id_sec;
4889
4890 r_type = ELF64_R_TYPE (irela->r_info);
4891 r_indx = ELF64_R_SYM (irela->r_info);
4892
4893 if (r_type >= (unsigned int) R_PPC_max)
4894 {
4895 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 4896 goto error_ret_free_internal;
721956f4
AM		 4897 }
4898
4899 /* Only look for stubs on branch instructions. */
4900 if (r_type != (unsigned int) R_PPC64_REL24
4901 && r_type != (unsigned int) R_PPC64_REL14
4902 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
4903 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
4904 continue;
4905
4906 /* Now determine the call target, its name, value,
4907 section. */
4908 sym_sec = NULL;
4909 sym_value = 0;
4910 destination = 0;
4911 hash = NULL;
4912 if (r_indx < symtab_hdr->sh_info)
4913 {
4914 /* It's a local symbol. */
4915 Elf_Internal_Sym *sym;
4916 Elf_Internal_Shdr *hdr;
4917
6cdc0ccc
AM		 4918 if (local_syms == NULL)
4919 {
4920 local_syms
4921 = (Elf_Internal_Sym *) symtab_hdr->contents;
4922 if (local_syms == NULL)
4923 local_syms
4924 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4925 symtab_hdr->sh_info, 0,
4926 NULL, NULL, NULL);
4927 if (local_syms == NULL)
4928 goto error_ret_free_internal;
4929 }
721956f4
AM		 4930 sym = local_syms + r_indx;
4931 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4932 sym_sec = hdr->bfd_section;
4933 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4934 sym_value = sym->st_value;
4935 destination = (sym_value + irela->r_addend
4936 + sym_sec->output_offset
4937 + sym_sec->output_section->vma);
4938 }
4939 else
4940 {
4941 /* It's an external symbol. */
4942 int e_indx;
4943
4944 e_indx = r_indx - symtab_hdr->sh_info;
4945 hash = ((struct ppc_link_hash_entry *)
4946 elf_sym_hashes (input_bfd)[e_indx]);
4947
4948 while (hash->elf.root.type == bfd_link_hash_indirect
4949 || hash->elf.root.type == bfd_link_hash_warning)
4950 hash = ((struct ppc_link_hash_entry *)
4951 hash->elf.root.u.i.link);
4952
4953 if (hash->elf.root.type == bfd_link_hash_defined
4954 || hash->elf.root.type == bfd_link_hash_defweak)
4955 {
4956 sym_sec = hash->elf.root.u.def.section;
4957 sym_value = hash->elf.root.u.def.value;
4958 if (sym_sec->output_section != NULL)
4959 destination = (sym_value + irela->r_addend
4960 + sym_sec->output_offset
4961 + sym_sec->output_section->vma);
4962 }
4963 else if (hash->elf.root.type == bfd_link_hash_undefweak)
4964 ;
4965 else if (hash->elf.root.type == bfd_link_hash_undefined)
4966 ;
4967 else
4968 {
4969 bfd_set_error (bfd_error_bad_value);
4970 goto error_ret_free_internal;
4971 }
4972 }
4973
4974 /* Determine what (if any) linker stub is needed. */
4975 stub_type = ppc_type_of_stub (section, irela, &hash,
4976 destination);
4977 if (stub_type == ppc_stub_none)
4978 continue;
4979
4980 /* Support for grouping stub sections. */
4981 id_sec = htab->stub_group[section->id].link_sec;
4982
4983 /* Get the name of this stub. */
4984 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
4985 if (!stub_name)
4986 goto error_ret_free_internal;
4987
4988 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4989 stub_name, false, false);
4990 if (stub_entry != NULL)
4991 {
4992 /* The proper stub has already been created. */
4993 free (stub_name);
4994 continue;
4995 }
4996
4997 stub_entry = ppc_add_stub (stub_name, section, htab);
4998 if (stub_entry == NULL)
4999 {
5000 free (stub_name);
6cdc0ccc
AM		 5001 error_ret_free_internal:
5002 if (elf_section_data (section)->relocs == NULL)
5003 free (internal_relocs);
5004 error_ret_free_local:
5005 if (local_syms != NULL
5006 && (symtab_hdr->contents
5007 != (unsigned char *) local_syms))
5008 free (local_syms);
5009 return false;
721956f4
AM		 5010 }
5011
5012 stub_entry->target_value = sym_value;
5013 stub_entry->target_section = sym_sec;
5014 stub_entry->stub_type = stub_type;
5015 stub_entry->h = hash;
5016 stub_changed = true;
5017 }
5018
5019 /* We're done with the internal relocs, free them. */
6cdc0ccc 5020 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 5021 free (internal_relocs);
721956f4 5022 }
6cdc0ccc
AM		 5023
5024 if (local_syms != NULL
5025 && symtab_hdr->contents != (unsigned char *) local_syms)
5026 {
5027 if (!info->keep_memory)
5028 free (local_syms);
5029 else
5030 symtab_hdr->contents = (unsigned char *) local_syms;
5031 }
721956f4
AM		 5032 }
5033
5034 if (!stub_changed)
5035 break;
5036
5037 /* OK, we've added some stubs. Find out the new size of the
5038 stub sections. */
5039 for (stub_sec = htab->stub_bfd->sections;
5040 stub_sec != NULL;
5041 stub_sec = stub_sec->next)
5042 {
5043 stub_sec->_raw_size = 0;
5044 stub_sec->_cooked_size = 0;
5045 }
5046 htab->sbrlt->_raw_size = 0;
5047 htab->sbrlt->_cooked_size = 0;
5048
5049 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
5050
5051 /* Ask the linker to do its stuff. */
5052 (*htab->layout_sections_again) ();
5053 }
5054
afbe61cf
AM		 5055 /* It would be nice to strip .branch_lt from the output if the
5056 section is empty, but it's too late. If we strip sections here,
5057 the dynamic symbol table is corrupted since the section symbol
5058 for the stripped section isn't written. */
721956f4 5059
6cdc0ccc 5060 return true;
721956f4
AM		 5061}
5062
5063/* Called after we have determined section placement. If sections
805fc799 5064 move, we'll be called again. Provide a value for TOCstart. */
721956f4 5065
805fc799
AM		 5066bfd_vma
5067ppc64_elf_toc (obfd)
5d1634d7 5068 bfd *obfd;
721956f4 5069{
805fc799
AM		 5070 asection *s;
5071 bfd_vma TOCstart;
721956f4 5072
805fc799
AM		 5073 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
5074 order. The TOC starts where the first of these sections starts. */
5075 s = bfd_get_section_by_name (obfd, ".got");
5076 if (s == NULL)
5077 s = bfd_get_section_by_name (obfd, ".toc");
5078 if (s == NULL)
5079 s = bfd_get_section_by_name (obfd, ".tocbss");
5080 if (s == NULL)
5081 s = bfd_get_section_by_name (obfd, ".plt");
5082 if (s == NULL)
5083 {
5084 /* This may happen for
5085 o references to TOC base (SYM@toc / TOC[tc0]) without a
5086 .toc directive
5087 o bad linker script
5088 o --gc-sections and empty TOC sections
5089
5090 FIXME: Warn user? */
5091
5092 /* Look for a likely section. We probably won't even be
5093 using TOCstart. */
5094 for (s = obfd->sections; s != NULL; s = s->next)
5095 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
5096 == (SEC_ALLOC | SEC_SMALL_DATA))
5097 break;
721956f4 5098 if (s == NULL)
805fc799
AM		 5099 for (s = obfd->sections; s != NULL; s = s->next)
5100 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
5101 == (SEC_ALLOC | SEC_SMALL_DATA))
5102 break;
721956f4 5103 if (s == NULL)
805fc799
AM		 5104 for (s = obfd->sections; s != NULL; s = s->next)
5105 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
5106 break;
721956f4 5107 if (s == NULL)
805fc799
AM		 5108 for (s = obfd->sections; s != NULL; s = s->next)
5109 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
5110 break;
5111 }
721956f4 5112
805fc799
AM		 5113 TOCstart = 0;
5114 if (s != NULL)
5115 TOCstart = s->output_section->vma + s->output_offset;
721956f4 5116
805fc799 5117 return TOCstart;
721956f4
AM		 5118}
5119
5120/* Build all the stubs associated with the current output file.
5121 The stubs are kept in a hash table attached to the main linker
5122 hash table. This function is called via gldelf64ppc_finish. */
5123
5124boolean
5125ppc64_elf_build_stubs (info)
5126 struct bfd_link_info *info;
5d1634d7
AM		 5127{
5128 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 5129 asection *stub_sec;
5d1634d7
AM		 5130 bfd_vma plt_r2;
5131 bfd_byte *p;
5132
721956f4
AM		 5133 for (stub_sec = htab->stub_bfd->sections;
5134 stub_sec != NULL;
5135 stub_sec = stub_sec->next)
5136 {
5137 bfd_size_type size;
5138
5139 /* Allocate memory to hold the linker stubs. */
5140 size = stub_sec->_raw_size;
5141 if (size != 0)
5142 {
5143 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
5144 if (stub_sec->contents == NULL)
5145 return false;
5146 }
5147 stub_sec->_cooked_size = 0;
5148 }
5d1634d7 5149
721956f4 5150 if (htab->splt != NULL)
5d1634d7 5151 {
721956f4
AM		 5152 /* Build the .glink plt call stub. */
5153 plt_r2 = (htab->splt->output_offset
5154 + htab->splt->output_section->vma
5155 - elf_gp (htab->splt->output_section->owner)
5156 - TOC_BASE_OFF);
5157 p = htab->sglink->contents;
5158 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
5159 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
5160 {
5161 bfd_put_32 (htab->sglink->owner, NOP, p);
5162 p += 4;
5163 }
5164 htab->sglink->_cooked_size = p - htab->sglink->contents;
5165
5166 /* Use reloc_count to count entries. */
5167 htab->sglink->reloc_count = 0;
5d1634d7 5168 }
5d1634d7 5169
721956f4
AM		 5170 if (htab->sbrlt->_raw_size != 0)
5171 {
5172 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
5173 htab->sbrlt->_raw_size);
5174 if (htab->sbrlt->contents == NULL)
5175 return false;
5176 }
5d1634d7 5177
721956f4
AM		 5178 /* Build the stubs as directed by the stub hash table. */
5179 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7
AM		 5180 htab->sglink->reloc_count = 0;
5181
721956f4
AM		 5182 for (stub_sec = htab->stub_bfd->sections;
5183 stub_sec != NULL;
5184 stub_sec = stub_sec->next)
5185 {
5186 if (stub_sec->_raw_size != stub_sec->_cooked_size)
5187 break;
5188 }
5d1634d7 5189
721956f4 5190 if (stub_sec != NULL
5d1634d7
AM		 5191 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
5192 {
721956f4
AM		 5193 htab->stub_error = true;
5194 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 5195 }
721956f4
AM		 5196
5197 return !htab->stub_error;
5bd4f169
AM		 5198}
5199
5bd4f169
AM		 5200/* The RELOCATE_SECTION function is called by the ELF backend linker
5201 to handle the relocations for a section.
5202
5203 The relocs are always passed as Rela structures; if the section
5204 actually uses Rel structures, the r_addend field will always be
5205 zero.
5206
5207 This function is responsible for adjust the section contents as
5208 necessary, and (if using Rela relocs and generating a
5209 relocateable output file) adjusting the reloc addend as
5210 necessary.
5211
5212 This function does not have to worry about setting the reloc
5213 address or the reloc symbol index.
5214
5215 LOCAL_SYMS is a pointer to the swapped in local symbols.
5216
5217 LOCAL_SECTIONS is an array giving the section in the input file
5218 corresponding to the st_shndx field of each local symbol.
5219
5220 The global hash table entry for the global symbols can be found
5221 via elf_sym_hashes (input_bfd).
5222
5223 When generating relocateable output, this function must handle
5224 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5225 going to be the section symbol corresponding to the output
5226 section, which means that the addend must be adjusted
5227 accordingly. */
5228
5229static boolean
5230ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
5231 contents, relocs, local_syms, local_sections)
5232 bfd *output_bfd;
5233 struct bfd_link_info *info;
5234 bfd *input_bfd;
5235 asection *input_section;
5236 bfd_byte *contents;
5237 Elf_Internal_Rela *relocs;
5238 Elf_Internal_Sym *local_syms;
5239 asection **local_sections;
5240{
65f38f15 5241 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5242 Elf_Internal_Shdr *symtab_hdr;
5243 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5244 Elf_Internal_Rela *rel;
5245 Elf_Internal_Rela *relend;
5bd4f169
AM		 5246 bfd_vma *local_got_offsets;
5247 bfd_vma TOCstart;
5248 boolean ret = true;
41bd81ab 5249 boolean is_opd;
96e0dda4
AM		 5250 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
5251 boolean is_power4 = false;
5bd4f169 5252
b491616a
AM		 5253 if (info->relocateable)
5254 return true;
5255
65f38f15 5256 /* Initialize howto table if needed. */
5bd4f169 5257 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 5258 ppc_howto_init ();
5259
65f38f15 5260 htab = ppc_hash_table (info);
5bd4f169 5261 local_got_offsets = elf_local_got_offsets (input_bfd);
5bd4f169 5262 TOCstart = elf_gp (output_bfd);
5bd4f169
AM		 5263 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5264 sym_hashes = elf_sym_hashes (input_bfd);
1e2f5b6e 5265 is_opd = elf_section_data (input_section)->tdata != NULL;
65f38f15 5266
5bd4f169
AM		 5267 rel = relocs;
5268 relend = relocs + input_section->reloc_count;
5269 for (; rel < relend; rel++)
5270 {
5271 enum elf_ppc_reloc_type r_type;
5272 bfd_vma offset;
5273 bfd_vma addend;
5274 bfd_reloc_status_type r;
5275 Elf_Internal_Sym *sym;
5276 asection *sec;
5277 struct elf_link_hash_entry *h;
721956f4 5278 struct elf_link_hash_entry *fdh;
5bd4f169 5279 const char *sym_name;
5bd4f169
AM		 5280 unsigned long r_symndx;
5281 bfd_vma relocation;
65f38f15 5282 boolean unresolved_reloc;
ef60b7ff 5283 boolean warned;
dc810e39 5284 long insn;
721956f4
AM		 5285 struct ppc_stub_hash_entry *stub_entry;
5286 bfd_vma max_br_offset;
5287 bfd_vma from;
5bd4f169
AM		 5288
5289 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5bd4f169 5290 r_symndx = ELF64_R_SYM (rel->r_info);
65f38f15
AM		 5291 offset = rel->r_offset;
5292 addend = rel->r_addend;
5293 r = bfd_reloc_other;
5294 sym = (Elf_Internal_Sym *) 0;
5295 sec = (asection *) 0;
5296 h = (struct elf_link_hash_entry *) 0;
5297 sym_name = (const char *) 0;
5298 unresolved_reloc = false;
ef60b7ff 5299 warned = false;
65f38f15 5300
5bd4f169
AM		 5301 if (r_type == R_PPC64_TOC)
5302 {
5303 /* Relocation value is TOC base. Symbol is ignored. */
5304 relocation = TOCstart + TOC_BASE_OFF;
5305 }
5306 else if (r_symndx < symtab_hdr->sh_info)
5307 {
5308 /* It's a local symbol. */
5309 sym = local_syms + r_symndx;
5310 sec = local_sections[r_symndx];
5311 sym_name = "<local symbol>";
5312
f8df10f4 5313 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
f46c2da6
AM		 5314 /* rel may have changed, update our copy of addend. */
5315 addend = rel->r_addend;
1e2f5b6e
AM		 5316
5317 if (elf_section_data (sec) != NULL)
5318 {
5319 long *opd_sym_adjust;
5320
5321 opd_sym_adjust = (long *) elf_section_data (sec)->tdata;
5322 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
5323 relocation += opd_sym_adjust[sym->st_value / 24];
5324 }
5bd4f169
AM		 5325 }
5326 else
5327 {
5328 /* It's a global symbol. */
5329 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5330 while (h->root.type == bfd_link_hash_indirect
5331 || h->root.type == bfd_link_hash_warning)
5332 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5333 sym_name = h->root.root.string;
65f38f15 5334 relocation = 0;
5bd4f169
AM		 5335 if (h->root.type == bfd_link_hash_defined
5336 || h->root.type == bfd_link_hash_defweak)
5337 {
5338 sec = h->root.u.def.section;
65f38f15
AM		 5339 if (sec->output_section == NULL)
5340 /* Set a flag that will be cleared later if we find a
5341 relocation value for this symbol. output_section
5342 is typically NULL for symbols satisfied by a shared
5343 library. */
5344 unresolved_reloc = true;
5bd4f169
AM		 5345 else
5346 relocation = (h->root.u.def.value
5347 + sec->output_section->vma
5348 + sec->output_offset);
5349 }
5350 else if (h->root.type == bfd_link_hash_undefweak)
65f38f15 5351 ;
671bae9c 5352 else if (info->shared
65f38f15
AM		 5353 && (!info->symbolic || info->allow_shlib_undefined)
5354 && !info->no_undefined
5355 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5356 ;
5bd4f169
AM		 5357 else
5358 {
5359 if (! ((*info->callbacks->undefined_symbol)
5360 (info, h->root.root.string, input_bfd, input_section,
65f38f15
AM		 5361 offset, (!info->shared
5362 || info->no_undefined
5363 || ELF_ST_VISIBILITY (h->other)))))
5bd4f169 5364 return false;
ef60b7ff 5365 warned = true;
5bd4f169
AM		 5366 }
5367 }
5368
65f38f15 5369 /* First handle relocations that tweak non-addend part of insn. */
86c76c7b 5370 insn = 0;
65f38f15 5371 switch (r_type)
5bd4f169
AM		 5372 {
5373 default:
65f38f15 5374 break;
5bd4f169 5375
65f38f15
AM		 5376 /* Branch taken prediction relocations. */
5377 case R_PPC64_ADDR14_BRTAKEN:
5378 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 5379 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
5380 /* Fall thru. */
65f38f15 5381
86c76c7b 5382 /* Branch not taken prediction relocations. */
65f38f15
AM		 5383 case R_PPC64_ADDR14_BRNTAKEN:
5384 case R_PPC64_REL14_BRNTAKEN:
86c76c7b 5385 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
96e0dda4
AM		 5386 if (is_power4)
5387 {
5388 /* Set 'a' bit. This is 0b00010 in BO field for branch
5389 on CR(BI) insns (BO == 001at or 011at), and 0b01000
5390 for branch on CTR insns (BO == 1a00t or 1a01t). */
5391 if ((insn & (0x14 << 21)) == (0x04 << 21))
5392 insn |= 0x02 << 21;
5393 else if ((insn & (0x14 << 21)) == (0x10 << 21))
5394 insn |= 0x08 << 21;
5395 else
5396 break;
5397 }
65f38f15 5398 else
96e0dda4 5399 {
805fc799
AM		 5400 from = (offset
5401 + input_section->output_offset
5402 + input_section->output_section->vma);
5403
96e0dda4 5404 /* Invert 'y' bit if not the default. */
805fc799 5405 if ((bfd_signed_vma) (relocation + addend - from) < 0)
96e0dda4
AM		 5406 insn ^= 0x01 << 21;
5407 }
86c76c7b 5408
65f38f15
AM		 5409 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
5410 break;
5bd4f169 5411
65f38f15 5412 case R_PPC64_REL24:
721956f4
AM		 5413 /* A REL24 branching to a linkage function is followed by a
5414 nop. We replace the nop with a ld in order to restore
5415 the TOC base pointer. Only calls to shared objects need
5416 to alter the TOC base. These are recognized by their
5417 need for a PLT entry. */
5bd4f169 5418 if (h != NULL
721956f4
AM		 5419 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
5420 && fdh->plt.offset != (bfd_vma) -1
5421 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
5422 rel, htab)) != NULL)
41bd81ab 5423 {
721956f4
AM		 5424 boolean can_plt_call = 0;
5425
41bd81ab
AM		 5426 if (offset + 8 <= input_section->_cooked_size)
5427 {
721956f4
AM		 5428 insn = bfd_get_32 (input_bfd, contents + offset + 4);
5429 if (insn == NOP
5430 || insn == CROR_151515 || insn == CROR_313131)
41bd81ab 5431 {
721956f4
AM		 5432 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
5433 contents + offset + 4);
5434 can_plt_call = 1;
41bd81ab 5435 }
5bd4f169 5436 }
721956f4
AM		 5437
5438 if (!can_plt_call)
5439 {
5440 /* If this is a plain branch rather than a branch
5441 and link, don't require a nop. */
5442 insn = bfd_get_32 (input_bfd, contents + offset);
5443 if ((insn & 1) == 0)
5444 can_plt_call = 1;
5445 }
5446
5447 if (can_plt_call)
5448 {
5449 relocation = (stub_entry->stub_offset
5450 + stub_entry->stub_sec->output_offset
5451 + stub_entry->stub_sec->output_section->vma);
5452 addend = 0;
5453 unresolved_reloc = false;
5454 }
5bd4f169 5455 }
e86ce104
AM		 5456
5457 if (h != NULL
5458 && h->root.type == bfd_link_hash_undefweak
721956f4
AM		 5459 && relocation == 0
5460 && addend == 0)
e86ce104 5461 {
721956f4
AM		 5462 /* Tweak calls to undefined weak functions to point at a
5463 blr. We can thus call a weak function without first
5464 checking whether the function is defined. We have a
5465 blr at the end of .sfpr. */
805fc799 5466 BFD_ASSERT (htab->sfpr->_raw_size != 0);
721956f4
AM		 5467 relocation = (htab->sfpr->_raw_size - 4
5468 + htab->sfpr->output_offset
5469 + htab->sfpr->output_section->vma);
5470 from = (offset
5471 + input_section->output_offset
5472 + input_section->output_section->vma);
805fc799 5473
721956f4
AM		 5474 /* But let's not be silly about it. If the blr isn't in
5475 reach, just go to the next instruction. */
805fc799
AM		 5476 if (relocation - from + (1 << 25) >= (1 << 26)
5477 || htab->sfpr->_raw_size == 0)
721956f4 5478 relocation = from + 4;
e86ce104 5479 }
65f38f15
AM		 5480 break;
5481 }
5bd4f169 5482
65f38f15
AM		 5483 /* Set `addend'. */
5484 switch (r_type)
5485 {
5486 default:
5487 (*_bfd_error_handler)
5488 (_("%s: unknown relocation type %d for symbol %s"),
5489 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5bd4f169 5490
65f38f15
AM		 5491 bfd_set_error (bfd_error_bad_value);
5492 ret = false;
5493 continue;
5bd4f169 5494
65f38f15
AM		 5495 case R_PPC64_NONE:
5496 case R_PPC_GNU_VTINHERIT:
5497 case R_PPC_GNU_VTENTRY:
5498 continue;
5bd4f169
AM		 5499
5500 /* GOT16 relocations. Like an ADDR16 using the symbol's
5501 address in the GOT as relocation value instead of the
5502 symbols value itself. Also, create a GOT entry for the
5503 symbol and put the symbol value there. */
65f38f15
AM		 5504 case R_PPC64_GOT16:
5505 case R_PPC64_GOT16_LO:
5506 case R_PPC64_GOT16_HI:
5507 case R_PPC64_GOT16_HA:
5508 case R_PPC64_GOT16_DS:
5509 case R_PPC64_GOT16_LO_DS:
5bd4f169
AM		 5510 {
5511 /* Relocation is to the entry for this symbol in the global
5512 offset table. */
5513 bfd_vma off;
65f38f15
AM		 5514
5515 if (htab->sgot == NULL)
5516 abort ();
5bd4f169
AM		 5517
5518 if (h != NULL)
5519 {
65f38f15 5520 boolean dyn;
5bd4f169 5521
65f38f15
AM		 5522 off = h->got.offset;
5523 dyn = htab->elf.dynamic_sections_created;
5524 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5bd4f169 5525 || (info->shared
65f38f15
AM		 5526 && (info->symbolic
5527 || h->dynindx == -1
5528 || (h->elf_link_hash_flags
5529 & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 5530 && (h->elf_link_hash_flags
5531 & ELF_LINK_HASH_DEF_REGULAR)))
5532 {
5533 /* This is actually a static link, or it is a
5534 -Bsymbolic link and the symbol is defined
65f38f15
AM		 5535 locally, or the symbol was forced to be local
5536 because of a version file. We must initialize
5537 this entry in the global offset table. Since the
5538 offset must always be a multiple of 8, we use the
5539 least significant bit to record whether we have
5bd4f169
AM		 5540 initialized it already.
5541
65f38f15 5542 When doing a dynamic link, we create a .rel.got
5bd4f169
AM		 5543 relocation entry to initialize the value. This
5544 is done in the finish_dynamic_symbol routine. */
5545 if ((off & 1) != 0)
5546 off &= ~1;
5547 else
5548 {
5549 bfd_put_64 (output_bfd, relocation,
65f38f15 5550 htab->sgot->contents + off);
5bd4f169
AM		 5551 h->got.offset |= 1;
5552 }
5553 }
65f38f15
AM		 5554 else
5555 unresolved_reloc = false;
5bd4f169
AM		 5556 }
5557 else
5558 {
65f38f15
AM		 5559 if (local_got_offsets == NULL)
5560 abort ();
5bd4f169
AM		 5561
5562 off = local_got_offsets[r_symndx];
5563
65f38f15 5564 /* The offset must always be a multiple of 8. We use
5bd4f169
AM		 5565 the least significant bit to record whether we have
5566 already processed this entry. */
5567 if ((off & 1) != 0)
5568 off &= ~1;
5569 else
5570 {
65f38f15
AM		 5571 bfd_put_64 (output_bfd, relocation,
5572 htab->sgot->contents + off);
5bd4f169
AM		 5573
5574 if (info->shared)
5575 {
5bd4f169 5576 Elf_Internal_Rela outrel;
65f38f15 5577 Elf64_External_Rela *loc;
5bd4f169
AM		 5578
5579 /* We need to generate a R_PPC64_RELATIVE reloc
5580 for the dynamic linker. */
65f38f15
AM		 5581 outrel.r_offset = (htab->sgot->output_section->vma
5582 + htab->sgot->output_offset
5bd4f169
AM		 5583 + off);
5584 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5585 outrel.r_addend = relocation;
65f38f15
AM		 5586 loc = (Elf64_External_Rela *) htab->srelgot->contents;
5587 loc += htab->srelgot->reloc_count++;
5588 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5bd4f169
AM		 5589 }
5590
5591 local_got_offsets[r_symndx] |= 1;
5592 }
5593 }
5594
65f38f15
AM		 5595 if (off >= (bfd_vma) -2)
5596 abort ();
5597
5598 relocation = htab->sgot->output_offset + off;
5599
5bd4f169
AM		 5600 /* TOC base (r2) is TOC start plus 0x8000. */
5601 addend -= TOC_BASE_OFF;
5bd4f169 5602 }
65f38f15
AM		 5603 break;
5604
5605 case R_PPC64_PLT16_HA:
5606 case R_PPC64_PLT16_HI:
5607 case R_PPC64_PLT16_LO:
5608 case R_PPC64_PLT32:
5609 case R_PPC64_PLT64:
5610 /* Relocation is to the entry for this symbol in the
5611 procedure linkage table. */
5612
5613 /* Resolve a PLT reloc against a local symbol directly,
5614 without using the procedure linkage table. */
5615 if (h == NULL)
5616 break;
5617
5618 if (h->plt.offset == (bfd_vma) -1
5619 || htab->splt == NULL)
5620 {
5621 /* We didn't make a PLT entry for this symbol. This
5622 happens when statically linking PIC code, or when
5623 using -Bsymbolic. */
5624 break;
5625 }
5626
5627 relocation = (htab->splt->output_section->vma
5628 + htab->splt->output_offset
5629 + h->plt.offset);
5630 unresolved_reloc = false;
5631 break;
5bd4f169
AM		 5632
5633 /* TOC16 relocs. We want the offset relative to the TOC base,
5634 which is the address of the start of the TOC plus 0x8000.
5635 The TOC consists of sections .got, .toc, .tocbss, and .plt,
5636 in this order. */
65f38f15
AM		 5637 case R_PPC64_TOC16:
5638 case R_PPC64_TOC16_LO:
5639 case R_PPC64_TOC16_HI:
5640 case R_PPC64_TOC16_DS:
5641 case R_PPC64_TOC16_LO_DS:
5642 case R_PPC64_TOC16_HA:
5bd4f169 5643 addend -= TOCstart + TOC_BASE_OFF;
5bd4f169
AM		 5644 break;
5645
5646 /* Relocate against the beginning of the section. */
65f38f15
AM		 5647 case R_PPC64_SECTOFF:
5648 case R_PPC64_SECTOFF_LO:
5649 case R_PPC64_SECTOFF_HI:
5650 case R_PPC64_SECTOFF_DS:
5651 case R_PPC64_SECTOFF_LO_DS:
5652 case R_PPC64_SECTOFF_HA:
5653 if (sec != (asection *) 0)
5654 addend -= sec->output_section->vma;
5bd4f169
AM		 5655 break;
5656
721956f4
AM		 5657 case R_PPC64_REL14:
5658 case R_PPC64_REL14_BRNTAKEN:
5659 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 5660 case R_PPC64_REL24:
5661 break;
5662
65f38f15
AM		 5663 /* Relocations that may need to be propagated if this is a
5664 dynamic object. */
65f38f15
AM		 5665 case R_PPC64_REL32:
5666 case R_PPC64_REL64:
5667 case R_PPC64_ADDR14:
5668 case R_PPC64_ADDR14_BRNTAKEN:
5669 case R_PPC64_ADDR14_BRTAKEN:
5670 case R_PPC64_ADDR16:
5671 case R_PPC64_ADDR16_DS:
5672 case R_PPC64_ADDR16_HA:
5673 case R_PPC64_ADDR16_HI:
5674 case R_PPC64_ADDR16_HIGHER:
5675 case R_PPC64_ADDR16_HIGHERA:
5676 case R_PPC64_ADDR16_HIGHEST:
5677 case R_PPC64_ADDR16_HIGHESTA:
5678 case R_PPC64_ADDR16_LO:
5679 case R_PPC64_ADDR16_LO_DS:
5680 case R_PPC64_ADDR24:
5681 case R_PPC64_ADDR30:
5682 case R_PPC64_ADDR32:
5683 case R_PPC64_ADDR64:
5684 case R_PPC64_UADDR16:
5685 case R_PPC64_UADDR32:
5686 case R_PPC64_UADDR64:
ec338859
AM		 5687 /* r_symndx will be zero only for relocs against symbols
5688 from removed linkonce sections, or sections discarded by
5689 a linker script. */
5d1634d7
AM		 5690 if (r_symndx == 0)
5691 break;
5692 /* Fall thru. */
5693
5694 case R_PPC64_TOC:
5695 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 5696 break;
5697
41bd81ab
AM		 5698 if (NO_OPD_RELOCS && is_opd)
5699 break;
5700
65f38f15 5701 if ((info->shared
65f38f15
AM		 5702 && (IS_ABSOLUTE_RELOC (r_type)
5703 || (h != NULL
5704 && h->dynindx != -1
5705 && (! info->symbolic
5706 || (h->elf_link_hash_flags
5707 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
5708 || (!info->shared
65f38f15
AM		 5709 && h != NULL
5710 && h->dynindx != -1
5711 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5712 && (((h->elf_link_hash_flags
5713 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5714 && (h->elf_link_hash_flags
5715 & ELF_LINK_HASH_DEF_REGULAR) == 0)
5716 || h->root.type == bfd_link_hash_undefweak
5717 || h->root.type == bfd_link_hash_undefined)))
5718 {
5719 Elf_Internal_Rela outrel;
5720 boolean skip, relocate;
5721 asection *sreloc;
5722 Elf64_External_Rela *loc;
5723
5724 /* When generating a dynamic object, these relocations
5725 are copied into the output file to be resolved at run
5726 time. */
5727
5728 skip = false;
0bb2d96a 5729 relocate = false;
65f38f15 5730
c629eae0
JJ		 5731 outrel.r_offset =
5732 _bfd_elf_section_offset (output_bfd, info, input_section,
5733 rel->r_offset);
5734 if (outrel.r_offset == (bfd_vma) -1)
5735 skip = true;
0bb2d96a
JJ		 5736 else if (outrel.r_offset == (bfd_vma) -2)
5737 skip = true, relocate = true;
65f38f15
AM		 5738 outrel.r_offset += (input_section->output_section->vma
5739 + input_section->output_offset);
5740 outrel.r_addend = addend;
5741
5742 if (skip)
0bb2d96a 5743 memset (&outrel, 0, sizeof outrel);
65f38f15
AM		 5744 else if (h != NULL
5745 && h->dynindx != -1
41bd81ab 5746 && !is_opd
65f38f15
AM		 5747 && (!IS_ABSOLUTE_RELOC (r_type)
5748 || !info->shared
5749 || !info->symbolic
5750 || (h->elf_link_hash_flags
5751 & ELF_LINK_HASH_DEF_REGULAR) == 0))
0bb2d96a 5752 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
65f38f15
AM		 5753 else
5754 {
41bd81ab
AM		 5755 /* This symbol is local, or marked to become local,
5756 or this is an opd section reloc which must point
5757 at a local function. */
65f38f15
AM		 5758 outrel.r_addend += relocation;
5759 relocate = true;
e86ce104 5760 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 5761 {
3fad3c7c 5762 if (is_opd && h != NULL)
afbe61cf
AM		 5763 {
5764 /* Lie about opd entries. This case occurs
5765 when building shared libraries and we
5766 reference a function in another shared
3fad3c7c
AM		 5767 lib. The same thing happens for a weak
5768 definition in an application that's
5769 overridden by a strong definition in a
5770 shared lib. (I believe this is a generic
5771 bug in binutils handling of weak syms.)
5772 In these cases we won't use the opd
1e2f5b6e 5773 entry in this lib. */
afbe61cf
AM		 5774 unresolved_reloc = false;
5775 }
65f38f15
AM		 5776 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5777 }
5778 else
5779 {
5780 long indx = 0;
5781
41bd81ab 5782 if (bfd_is_abs_section (sec))
65f38f15
AM		 5783 ;
5784 else if (sec == NULL || sec->owner == NULL)
5785 {
5786 bfd_set_error (bfd_error_bad_value);
5787 return false;
5788 }
5789 else
5790 {
5791 asection *osec;
5792
5793 osec = sec->output_section;
5794 indx = elf_section_data (osec)->dynindx;
5795
5796 /* We are turning this relocation into one
5797 against a section symbol, so subtract out
5798 the output section's address but not the
5799 offset of the input section in the output
5800 section. */
5801 outrel.r_addend -= osec->vma;
5802 }
5803
5804 outrel.r_info = ELF64_R_INFO (indx, r_type);
5805 }
5806 }
5807
5808 sreloc = elf_section_data (input_section)->sreloc;
5809 if (sreloc == NULL)
5810 abort ();
5811
5812 loc = (Elf64_External_Rela *) sreloc->contents;
5813 loc += sreloc->reloc_count++;
5814 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5815
5816 /* If this reloc is against an external symbol, it will
5817 be computed at runtime, so there's no need to do
5818 anything now. */
5819 if (! relocate)
5820 continue;
5821 }
5bd4f169
AM		 5822 break;
5823
65f38f15
AM		 5824 case R_PPC64_COPY:
5825 case R_PPC64_GLOB_DAT:
5826 case R_PPC64_JMP_SLOT:
5827 case R_PPC64_RELATIVE:
5828 /* We shouldn't ever see these dynamic relocs in relocatable
5829 files. */
5830 /* Fall thru */
5831
5832 case R_PPC64_PLTGOT16:
5833 case R_PPC64_PLTGOT16_DS:
5834 case R_PPC64_PLTGOT16_HA:
5835 case R_PPC64_PLTGOT16_HI:
5836 case R_PPC64_PLTGOT16_LO:
5837 case R_PPC64_PLTGOT16_LO_DS:
5838 case R_PPC64_PLTREL32:
5839 case R_PPC64_PLTREL64:
5840 /* These ones haven't been implemented yet. */
5841
5842 (*_bfd_error_handler)
5843 (_("%s: Relocation %s is not supported for symbol %s."),
5844 bfd_archive_filename (input_bfd),
5845 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5bd4f169
AM		 5846
5847 bfd_set_error (bfd_error_invalid_operation);
5848 ret = false;
5849 continue;
65f38f15 5850 }
5bd4f169 5851
65f38f15
AM		 5852 /* Do any further special processing. */
5853 switch (r_type)
5854 {
5855 default:
5856 break;
5857
5858 case R_PPC64_ADDR16_HA:
5859 case R_PPC64_ADDR16_HIGHERA:
5860 case R_PPC64_ADDR16_HIGHESTA:
5861 case R_PPC64_PLT16_HA:
5862 case R_PPC64_TOC16_HA:
5863 case R_PPC64_SECTOFF_HA:
5864 /* It's just possible that this symbol is a weak symbol
5865 that's not actually defined anywhere. In that case,
5866 'sec' would be NULL, and we should leave the symbol
5867 alone (it will be set to zero elsewhere in the link). */
5868 if (sec != NULL)
5869 /* Add 0x10000 if sign bit in 0:15 is set. */
5870 addend += ((relocation + addend) & 0x8000) << 1;
5871 break;
5872
5873 case R_PPC64_ADDR16_DS:
5874 case R_PPC64_ADDR16_LO_DS:
5875 case R_PPC64_GOT16_DS:
5876 case R_PPC64_GOT16_LO_DS:
5877 case R_PPC64_PLT16_LO_DS:
5878 case R_PPC64_SECTOFF_DS:
5879 case R_PPC64_SECTOFF_LO_DS:
5880 case R_PPC64_TOC16_DS:
5881 case R_PPC64_TOC16_LO_DS:
5882 case R_PPC64_PLTGOT16_DS:
5883 case R_PPC64_PLTGOT16_LO_DS:
5884 if (((relocation + addend) & 3) != 0)
5885 {
5886 (*_bfd_error_handler)
5887 (_("%s: error: relocation %s not a multiple of 4"),
5888 bfd_archive_filename (input_bfd),
5889 ppc64_elf_howto_table[(int) r_type]->name);
5890 bfd_set_error (bfd_error_bad_value);
5891 ret = false;
5892 continue;
5893 }
5894 break;
721956f4
AM		 5895
5896 case R_PPC64_REL14:
5897 case R_PPC64_REL14_BRNTAKEN:
5898 case R_PPC64_REL14_BRTAKEN:
5899 max_br_offset = 1 << 15;
5900 goto branch_check;
5901
5902 case R_PPC64_REL24:
5903 max_br_offset = 1 << 25;
5904
5905 branch_check:
5906 /* If the branch is out of reach, then redirect the
5907 call to the local stub for this function. */
5908 from = (offset
5909 + input_section->output_offset
5910 + input_section->output_section->vma);
5911 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
5912 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
5913 rel, htab)) != NULL)
5914 {
5915 /* Munge up the value and addend so that we call the stub
5916 rather than the procedure directly. */
5917 relocation = (stub_entry->stub_offset
5918 + stub_entry->stub_sec->output_offset
5919 + stub_entry->stub_sec->output_section->vma);
5920 addend = 0;
5921 }
5922 break;
5bd4f169
AM		 5923 }
5924
239e1f3a
AM		 5925 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5926 because such sections are not SEC_ALLOC and thus ld.so will
5927 not process them. */
65f38f15 5928 if (unresolved_reloc
239e1f3a 5929 && !((input_section->flags & SEC_DEBUGGING) != 0
65f38f15 5930 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
9c07fe7c
AM		 5931 {
5932 (*_bfd_error_handler)
5933 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
5934 bfd_archive_filename (input_bfd),
5935 bfd_get_section_name (input_bfd, input_section),
5936 (long) rel->r_offset,
5937 h->root.root.string);
5938 ret = false;
5939 }
5bd4f169 5940
65f38f15 5941 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 5942 input_bfd,
5943 input_section,
5944 contents,
5945 offset,
5946 relocation,
5947 addend);
5948
ef60b7ff 5949 if (r != bfd_reloc_ok)
5bd4f169
AM		 5950 {
5951 const char *name;
5952
5953 if (h != NULL)
5954 {
5955 if (h->root.type == bfd_link_hash_undefweak
65f38f15 5956 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5bd4f169
AM		 5957 {
5958 /* Assume this is a call protected by other code that
5959 detects the symbol is undefined. If this is the case,
5960 we can safely ignore the overflow. If not, the
5961 program is hosed anyway, and a little warning isn't
5962 going to help. */
5963
5964 continue;
5965 }
5966
5967 name = h->root.root.string;
5968 }
5969 else
5970 {
5971 name = bfd_elf_string_from_elf_section (input_bfd,
5972 symtab_hdr->sh_link,
5973 sym->st_name);
5974 if (name == NULL)
5975 continue;
5976 if (*name == '\0')
5977 name = bfd_section_name (input_bfd, sec);
5978 }
5979
ef60b7ff
AM		 5980 if (r == bfd_reloc_overflow)
5981 {
5982 if (warned)
5983 continue;
5984 if (!((*info->callbacks->reloc_overflow)
5985 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
5986 rel->r_addend, input_bfd, input_section, offset)))
5987 return false;
5988 }
5989 else
5990 {
5991 (*_bfd_error_handler)
5992 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
5993 bfd_archive_filename (input_bfd),
5994 bfd_get_section_name (input_bfd, input_section),
5995 (long) rel->r_offset, name, (int) r);
5996 ret = false;
5997 }
5bd4f169 5998 }
5bd4f169
AM		 5999 }
6000
5bd4f169
AM		 6001 return ret;
6002}
6003
6004/* Finish up dynamic symbol handling. We set the contents of various
6005 dynamic sections here. */
6006
6007static boolean
6008ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
6009 bfd *output_bfd;
6010 struct bfd_link_info *info;
6011 struct elf_link_hash_entry *h;
6012 Elf_Internal_Sym *sym;
6013{
65f38f15 6014 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6015 bfd *dynobj;
6016
65f38f15
AM		 6017 htab = ppc_hash_table (info);
6018 dynobj = htab->elf.dynobj;
5bd4f169 6019
41bd81ab
AM		 6020 if (h->plt.offset != (bfd_vma) -1
6021 && ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
5bd4f169 6022 {
65f38f15
AM		 6023 Elf_Internal_Rela rela;
6024 Elf64_External_Rela *loc;
5bd4f169
AM		 6025
6026 /* This symbol has an entry in the procedure linkage table. Set
3fad3c7c 6027 it up. */
5bd4f169 6028
5d1634d7 6029 if (htab->splt == NULL
65f38f15 6030 || htab->srelplt == NULL
e86ce104 6031 || htab->sglink == NULL)
65f38f15
AM		 6032 abort ();
6033
65f38f15
AM		 6034 /* Create a JMP_SLOT reloc to inform the dynamic linker to
6035 fill in the PLT entry. */
5bd4f169 6036
65f38f15
AM		 6037 rela.r_offset = (htab->splt->output_section->vma
6038 + htab->splt->output_offset
6039 + h->plt.offset);
e86ce104 6040 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
65f38f15
AM		 6041 rela.r_addend = 0;
6042
6043 loc = (Elf64_External_Rela *) htab->srelplt->contents;
6044 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
6045 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 6046 }
6047
6048 if (h->got.offset != (bfd_vma) -1)
6049 {
5bd4f169 6050 Elf_Internal_Rela rela;
65f38f15 6051 Elf64_External_Rela *loc;
5bd4f169
AM		 6052
6053 /* This symbol has an entry in the global offset table. Set it
3fad3c7c 6054 up. */
5bd4f169 6055
65f38f15
AM		 6056 if (htab->sgot == NULL || htab->srelgot == NULL)
6057 abort ();
5bd4f169 6058
65f38f15
AM		 6059 rela.r_offset = (htab->sgot->output_section->vma
6060 + htab->sgot->output_offset
dc810e39 6061 + (h->got.offset &~ (bfd_vma) 1));
5bd4f169 6062
65f38f15
AM		 6063 /* If this is a static link, or it is a -Bsymbolic link and the
6064 symbol is defined locally or was forced to be local because
6065 of a version file, we just want to emit a RELATIVE reloc.
6066 The entry in the global offset table will already have been
6067 initialized in the relocate_section function. */
5bd4f169 6068 if (info->shared
65f38f15
AM		 6069 && (info->symbolic
6070 || h->dynindx == -1
6071 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
5bd4f169
AM		 6072 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
6073 {
65f38f15 6074 BFD_ASSERT((h->got.offset & 1) != 0);
5bd4f169
AM		 6075 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6076 rela.r_addend = (h->root.u.def.value
6077 + h->root.u.def.section->output_section->vma
6078 + h->root.u.def.section->output_offset);
6079 }
6080 else
6081 {
6082 BFD_ASSERT ((h->got.offset & 1) == 0);
65f38f15
AM		 6083 bfd_put_64 (output_bfd, (bfd_vma) 0,
6084 htab->sgot->contents + h->got.offset);
5bd4f169
AM		 6085 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
6086 rela.r_addend = 0;
6087 }
6088
65f38f15
AM		 6089 loc = (Elf64_External_Rela *) htab->srelgot->contents;
6090 loc += htab->srelgot->reloc_count++;
6091 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 6092 }
6093
6094 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
6095 {
5bd4f169 6096 Elf_Internal_Rela rela;
65f38f15 6097 Elf64_External_Rela *loc;
5bd4f169 6098
65f38f15 6099 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 6100
65f38f15
AM		 6101 if (h->dynindx == -1
6102 || (h->root.type != bfd_link_hash_defined
6103 && h->root.type != bfd_link_hash_defweak)
6104 || htab->srelbss == NULL)
6105 abort ();
5bd4f169
AM		 6106
6107 rela.r_offset = (h->root.u.def.value
6108 + h->root.u.def.section->output_section->vma
6109 + h->root.u.def.section->output_offset);
6110 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
6111 rela.r_addend = 0;
65f38f15
AM		 6112 loc = (Elf64_External_Rela *) htab->srelbss->contents;
6113 loc += htab->srelbss->reloc_count++;
6114 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 6115 }
6116
5bd4f169
AM		 6117 /* Mark some specially defined symbols as absolute. */
6118 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
6119 sym->st_shndx = SHN_ABS;
6120
6121 return true;
6122}
6123
65f38f15
AM		 6124/* Used to decide how to sort relocs in an optimal manner for the
6125 dynamic linker, before writing them out. */
6126
6127static enum elf_reloc_type_class
6128ppc64_elf_reloc_type_class (rela)
6129 const Elf_Internal_Rela *rela;
6130{
a33d1f77
AM		 6131 enum elf_ppc_reloc_type r_type;
6132
6133 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
6134 switch (r_type)
65f38f15
AM		 6135 {
6136 case R_PPC64_RELATIVE:
6137 return reloc_class_relative;
6138 case R_PPC64_JMP_SLOT:
6139 return reloc_class_plt;
6140 case R_PPC64_COPY:
6141 return reloc_class_copy;
6142 default:
6143 return reloc_class_normal;
6144 }
6145}
6146
5bd4f169
AM		 6147/* Finish up the dynamic sections. */
6148
6149static boolean
6150ppc64_elf_finish_dynamic_sections (output_bfd, info)
6151 bfd *output_bfd;
6152 struct bfd_link_info *info;
6153{
65f38f15
AM		 6154 struct ppc_link_hash_table *htab;
6155 bfd *dynobj;
5bd4f169 6156 asection *sdyn;
5bd4f169 6157
65f38f15
AM		 6158 htab = ppc_hash_table (info);
6159 dynobj = htab->elf.dynobj;
5bd4f169
AM		 6160 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6161
65f38f15 6162 if (htab->elf.dynamic_sections_created)
5bd4f169 6163 {
5bd4f169
AM		 6164 Elf64_External_Dyn *dyncon, *dynconend;
6165
65f38f15
AM		 6166 if (sdyn == NULL || htab->sgot == NULL)
6167 abort ();
5bd4f169
AM		 6168
6169 dyncon = (Elf64_External_Dyn *) sdyn->contents;
6170 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
6171 for (; dyncon < dynconend; dyncon++)
6172 {
6173 Elf_Internal_Dyn dyn;
19397422 6174 asection *s;
5bd4f169
AM		 6175
6176 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
6177
6178 switch (dyn.d_tag)
6179 {
65f38f15
AM		 6180 default:
6181 continue;
5bd4f169 6182
5d1634d7
AM		 6183 case DT_PPC64_GLINK:
6184 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
6185 + htab->sglink->output_offset);
6186 break;
6187
19397422
AM		 6188 case DT_PPC64_OPD:
6189 s = bfd_get_section_by_name (output_bfd, ".opd");
6190 if (s != NULL)
6191 dyn.d_un.d_ptr = s->vma;
6192 break;
6193
6194 case DT_PPC64_OPDSZ:
6195 s = bfd_get_section_by_name (output_bfd, ".opd");
6196 if (s != NULL)
6197 dyn.d_un.d_val = s->_raw_size;
6198 break;
6199
65f38f15 6200 case DT_PLTGOT:
5d1634d7
AM		 6201 dyn.d_un.d_ptr = (htab->splt->output_section->vma
6202 + htab->splt->output_offset);
65f38f15
AM		 6203 break;
6204
6205 case DT_JMPREL:
5d1634d7
AM		 6206 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
6207 + htab->srelplt->output_offset);
65f38f15 6208 break;
5bd4f169 6209
65f38f15 6210 case DT_PLTRELSZ:
5d1634d7
AM		 6211 dyn.d_un.d_val = htab->srelplt->_raw_size;
6212 break;
6213
6214 case DT_RELASZ:
6215 /* Don't count procedure linkage table relocs in the
6216 overall reloc count. */
6217 if (htab->srelplt != NULL)
6218 dyn.d_un.d_val -= htab->srelplt->_raw_size;
65f38f15 6219 break;
5bd4f169 6220 }
5bd4f169 6221
65f38f15 6222 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 6223 }
5bd4f169
AM		 6224 }
6225
5d1634d7
AM		 6226 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
6227 {
6228 /* Fill in the first entry in the global offset table.
6229 We use it to hold the link-time TOCbase. */
6230 bfd_put_64 (output_bfd,
60ee0d4a 6231 elf_gp (output_bfd) + TOC_BASE_OFF,
5d1634d7
AM		 6232 htab->sgot->contents);
6233
6234 /* Set .got entry size. */
6235 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
6236 }
6237
6238 if (htab->splt != NULL && htab->splt->_raw_size != 0)
6239 {
6240 /* Set .plt entry size. */
6241 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
6242 = PLT_ENTRY_SIZE;
6243 }
6244
5bd4f169
AM		 6245 return true;
6246}
6247
6248#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
6249#define TARGET_LITTLE_NAME "elf64-powerpcle"
6250#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
6251#define TARGET_BIG_NAME "elf64-powerpc"
6252#define ELF_ARCH bfd_arch_powerpc
6253#define ELF_MACHINE_CODE EM_PPC64
6254#define ELF_MAXPAGESIZE 0x10000
6255#define elf_info_to_howto ppc64_elf_info_to_howto
6256
6257#ifdef EM_CYGNUS_POWERPC
6258#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6259#endif
6260
6261#ifdef EM_PPC_OLD
6262#define ELF_MACHINE_ALT2 EM_PPC_OLD
6263#endif
6264
6265#define elf_backend_want_got_sym 0
6266#define elf_backend_want_plt_sym 0
6267#define elf_backend_plt_alignment 3
6268#define elf_backend_plt_not_loaded 1
6269#define elf_backend_got_symbol_offset 0
5d1634d7
AM		 6270#define elf_backend_got_header_size 8
6271#define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
5bd4f169 6272#define elf_backend_can_gc_sections 1
65f38f15 6273#define elf_backend_can_refcount 1
b491616a 6274#define elf_backend_rela_normal 1
5bd4f169 6275
65f38f15 6276#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
65f38f15
AM		 6277#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
6278#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
721956f4 6279#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
65f38f15 6280
feee612b 6281#define elf_backend_object_p ppc64_elf_object_p
65f38f15
AM		 6282#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
6283#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
6284#define elf_backend_check_relocs ppc64_elf_check_relocs
6285#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
6286#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
6287#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
e86ce104
AM		 6288#define elf_backend_hide_symbol ppc64_elf_hide_symbol
6289#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
65f38f15 6290#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
65f38f15
AM		 6291#define elf_backend_relocate_section ppc64_elf_relocate_section
6292#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
6293#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
6294#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
5bd4f169
AM		 6295
6296#include "elf64-target.h"
GDB Binutils - Deliverables
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