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Make the R_XSTORMY16_8 and R_XSTORMY16_16 relocs detect and complain about
[binutils-gdb.git] / bfd / elf64-ppc.c
1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 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/ppc64.h"
31 #include "elf64-ppc.h"
32
33 static void ppc_howto_init
34 PARAMS ((void));
35 static reloc_howto_type *ppc64_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37 static void ppc64_elf_info_to_howto
38 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst));
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
44 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
45 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
46 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
47 static bfd_reloc_status_type ppc64_elf_toc_reloc
48 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
49 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
50 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
51 static bfd_reloc_status_type ppc64_elf_toc64_reloc
52 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
53 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
54 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
55 static bfd_boolean ppc64_elf_object_p
56 PARAMS ((bfd *));
57 static bfd_boolean ppc64_elf_merge_private_bfd_data
58 PARAMS ((bfd *, bfd *));
59 static bfd_boolean ppc64_elf_new_section_hook
60 PARAMS ((bfd *, asection *));
61
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
66
67 /* The size in bytes of an entry in the procedure linkage table. */
68 #define PLT_ENTRY_SIZE 24
69
70 /* The initial size of the plt reserved for the dynamic linker. */
71 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
72
73 /* TOC base pointers offset from start of TOC. */
74 #define TOC_BASE_OFF 0x8000
75
76 /* Offset of tp and dtp pointers from start of TLS block. */
77 #define TP_OFFSET 0x7000
78 #define DTP_OFFSET 0x8000
79
80 /* .plt call stub instructions. */
81 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
82 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
83 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
84 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
85 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
86 /* ld %r11,xxx+16@l(%r12) */
87 #define BCTR 0x4e800420 /* bctr */
88
89 /* The normal stub is this size. */
90 #define PLT_CALL_STUB_SIZE (7*4)
91
92 /* But sometimes the .plt entry crosses a 64k boundary, and we need
93 to adjust the high word with this insn. */
94 #define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
95
96 /* The .glink fixup call stub is the same as the .plt call stub, but
97 the first instruction restores r2, and the std is omitted. */
98 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
99
100 /* Always allow this much space. */
101 #define GLINK_CALL_STUB_SIZE (8*4)
102
103 /* Pad with this. */
104 #define NOP 0x60000000
105
106 /* Some other nops. */
107 #define CROR_151515 0x4def7b82
108 #define CROR_313131 0x4ffffb82
109
110 /* .glink entries for the first 32k functions are two instructions. */
111 #define LI_R0_0 0x38000000 /* li %r0,0 */
112 #define B_DOT 0x48000000 /* b . */
113
114 /* After that, we need two instructions to load the index, followed by
115 a branch. */
116 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
117 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
118
119 /* Instructions to save and restore floating point regs. */
120 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
121 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
122 #define BLR 0x4e800020 /* blr */
123
124 /* Since .opd is an array of descriptors and each entry will end up
125 with identical R_PPC64_RELATIVE relocs, there is really no need to
126 propagate .opd relocs; The dynamic linker should be taught to
127 relocate .opd without reloc entries. */
128 #ifndef NO_OPD_RELOCS
129 #define NO_OPD_RELOCS 0
130 #endif
131 \f
132 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
133
134 /* Relocation HOWTO's. */
135 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
136
137 static reloc_howto_type ppc64_elf_howto_raw[] = {
138 /* This reloc does nothing. */
139 HOWTO (R_PPC64_NONE, /* type */
140 0, /* rightshift */
141 2, /* size (0 = byte, 1 = short, 2 = long) */
142 32, /* bitsize */
143 FALSE, /* pc_relative */
144 0, /* bitpos */
145 complain_overflow_dont, /* complain_on_overflow */
146 bfd_elf_generic_reloc, /* special_function */
147 "R_PPC64_NONE", /* name */
148 FALSE, /* partial_inplace */
149 0, /* src_mask */
150 0, /* dst_mask */
151 FALSE), /* pcrel_offset */
152
153 /* A standard 32 bit relocation. */
154 HOWTO (R_PPC64_ADDR32, /* type */
155 0, /* rightshift */
156 2, /* size (0 = byte, 1 = short, 2 = long) */
157 32, /* bitsize */
158 FALSE, /* pc_relative */
159 0, /* bitpos */
160 complain_overflow_bitfield, /* complain_on_overflow */
161 bfd_elf_generic_reloc, /* special_function */
162 "R_PPC64_ADDR32", /* name */
163 FALSE, /* partial_inplace */
164 0, /* src_mask */
165 0xffffffff, /* dst_mask */
166 FALSE), /* pcrel_offset */
167
168 /* An absolute 26 bit branch; the lower two bits must be zero.
169 FIXME: we don't check that, we just clear them. */
170 HOWTO (R_PPC64_ADDR24, /* type */
171 0, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 26, /* bitsize */
174 FALSE, /* pc_relative */
175 0, /* bitpos */
176 complain_overflow_bitfield, /* complain_on_overflow */
177 bfd_elf_generic_reloc, /* special_function */
178 "R_PPC64_ADDR24", /* name */
179 FALSE, /* partial_inplace */
180 0, /* src_mask */
181 0x03fffffc, /* dst_mask */
182 FALSE), /* pcrel_offset */
183
184 /* A standard 16 bit relocation. */
185 HOWTO (R_PPC64_ADDR16, /* type */
186 0, /* rightshift */
187 1, /* size (0 = byte, 1 = short, 2 = long) */
188 16, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_bitfield, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_PPC64_ADDR16", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0xffff, /* dst_mask */
197 FALSE), /* pcrel_offset */
198
199 /* A 16 bit relocation without overflow. */
200 HOWTO (R_PPC64_ADDR16_LO, /* type */
201 0, /* rightshift */
202 1, /* size (0 = byte, 1 = short, 2 = long) */
203 16, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_dont,/* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_PPC64_ADDR16_LO", /* name */
209 FALSE, /* partial_inplace */
210 0, /* src_mask */
211 0xffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 /* Bits 16-31 of an address. */
215 HOWTO (R_PPC64_ADDR16_HI, /* type */
216 16, /* rightshift */
217 1, /* size (0 = byte, 1 = short, 2 = long) */
218 16, /* bitsize */
219 FALSE, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_dont, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_PPC64_ADDR16_HI", /* name */
224 FALSE, /* partial_inplace */
225 0, /* src_mask */
226 0xffff, /* dst_mask */
227 FALSE), /* pcrel_offset */
228
229 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
230 bits, treated as a signed number, is negative. */
231 HOWTO (R_PPC64_ADDR16_HA, /* type */
232 16, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 16, /* bitsize */
235 FALSE, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_dont, /* complain_on_overflow */
238 ppc64_elf_ha_reloc, /* special_function */
239 "R_PPC64_ADDR16_HA", /* name */
240 FALSE, /* partial_inplace */
241 0, /* src_mask */
242 0xffff, /* dst_mask */
243 FALSE), /* pcrel_offset */
244
245 /* An absolute 16 bit branch; the lower two bits must be zero.
246 FIXME: we don't check that, we just clear them. */
247 HOWTO (R_PPC64_ADDR14, /* type */
248 0, /* rightshift */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC64_ADDR14", /* name */
256 FALSE, /* partial_inplace */
257 0, /* src_mask */
258 0x0000fffc, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 /* An absolute 16 bit branch, for which bit 10 should be set to
262 indicate that the branch is expected to be taken. The lower two
263 bits must be zero. */
264 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
265 0, /* rightshift */
266 2, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_bitfield, /* complain_on_overflow */
271 ppc64_elf_brtaken_reloc, /* special_function */
272 "R_PPC64_ADDR14_BRTAKEN",/* name */
273 FALSE, /* partial_inplace */
274 0, /* src_mask */
275 0x0000fffc, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* An absolute 16 bit branch, for which bit 10 should be set to
279 indicate that the branch is not expected to be taken. The lower
280 two bits must be zero. */
281 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
282 0, /* rightshift */
283 2, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
285 FALSE, /* pc_relative */
286 0, /* bitpos */
287 complain_overflow_bitfield, /* complain_on_overflow */
288 ppc64_elf_brtaken_reloc, /* special_function */
289 "R_PPC64_ADDR14_BRNTAKEN",/* name */
290 FALSE, /* partial_inplace */
291 0, /* src_mask */
292 0x0000fffc, /* dst_mask */
293 FALSE), /* pcrel_offset */
294
295 /* A relative 26 bit branch; the lower two bits must be zero. */
296 HOWTO (R_PPC64_REL24, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 26, /* bitsize */
300 TRUE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC64_REL24", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0x03fffffc, /* dst_mask */
308 TRUE), /* pcrel_offset */
309
310 /* A relative 16 bit branch; the lower two bits must be zero. */
311 HOWTO (R_PPC64_REL14, /* type */
312 0, /* rightshift */
313 2, /* size (0 = byte, 1 = short, 2 = long) */
314 16, /* bitsize */
315 TRUE, /* pc_relative */
316 0, /* bitpos */
317 complain_overflow_signed, /* complain_on_overflow */
318 bfd_elf_generic_reloc, /* special_function */
319 "R_PPC64_REL14", /* name */
320 FALSE, /* partial_inplace */
321 0, /* src_mask */
322 0x0000fffc, /* dst_mask */
323 TRUE), /* pcrel_offset */
324
325 /* A relative 16 bit branch. Bit 10 should be set to indicate that
326 the branch is expected to be taken. The lower two bits must be
327 zero. */
328 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
329 0, /* rightshift */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
331 16, /* bitsize */
332 TRUE, /* pc_relative */
333 0, /* bitpos */
334 complain_overflow_signed, /* complain_on_overflow */
335 ppc64_elf_brtaken_reloc, /* special_function */
336 "R_PPC64_REL14_BRTAKEN", /* name */
337 FALSE, /* partial_inplace */
338 0, /* src_mask */
339 0x0000fffc, /* dst_mask */
340 TRUE), /* pcrel_offset */
341
342 /* A relative 16 bit branch. Bit 10 should be set to indicate that
343 the branch is not expected to be taken. The lower two bits must
344 be zero. */
345 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 16, /* bitsize */
349 TRUE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 ppc64_elf_brtaken_reloc, /* special_function */
353 "R_PPC64_REL14_BRNTAKEN",/* name */
354 FALSE, /* partial_inplace */
355 0, /* src_mask */
356 0x0000fffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
358
359 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
360 symbol. */
361 HOWTO (R_PPC64_GOT16, /* type */
362 0, /* rightshift */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 FALSE, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_unhandled_reloc, /* special_function */
369 "R_PPC64_GOT16", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0xffff, /* dst_mask */
373 FALSE), /* pcrel_offset */
374
375 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
376 the symbol. */
377 HOWTO (R_PPC64_GOT16_LO, /* type */
378 0, /* rightshift */
379 1, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 FALSE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_dont, /* complain_on_overflow */
384 ppc64_elf_unhandled_reloc, /* special_function */
385 "R_PPC64_GOT16_LO", /* name */
386 FALSE, /* partial_inplace */
387 0, /* src_mask */
388 0xffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
390
391 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
392 the symbol. */
393 HOWTO (R_PPC64_GOT16_HI, /* type */
394 16, /* rightshift */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 FALSE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_dont,/* complain_on_overflow */
400 ppc64_elf_unhandled_reloc, /* special_function */
401 "R_PPC64_GOT16_HI", /* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0xffff, /* dst_mask */
405 FALSE), /* pcrel_offset */
406
407 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
408 the symbol. */
409 HOWTO (R_PPC64_GOT16_HA, /* type */
410 16, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_dont,/* complain_on_overflow */
416 ppc64_elf_unhandled_reloc, /* special_function */
417 "R_PPC64_GOT16_HA", /* name */
418 FALSE, /* partial_inplace */
419 0, /* src_mask */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
423 /* This is used only by the dynamic linker. The symbol should exist
424 both in the object being run and in some shared library. The
425 dynamic linker copies the data addressed by the symbol from the
426 shared library into the object, because the object being
427 run has to have the data at some particular address. */
428 HOWTO (R_PPC64_COPY, /* type */
429 0, /* rightshift */
430 0, /* this one is variable size */
431 0, /* bitsize */
432 FALSE, /* pc_relative */
433 0, /* bitpos */
434 complain_overflow_dont, /* complain_on_overflow */
435 ppc64_elf_unhandled_reloc, /* special_function */
436 "R_PPC64_COPY", /* name */
437 FALSE, /* partial_inplace */
438 0, /* src_mask */
439 0, /* dst_mask */
440 FALSE), /* pcrel_offset */
441
442 /* Like R_PPC64_ADDR64, but used when setting global offset table
443 entries. */
444 HOWTO (R_PPC64_GLOB_DAT, /* type */
445 0, /* rightshift */
446 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
447 64, /* bitsize */
448 FALSE, /* pc_relative */
449 0, /* bitpos */
450 complain_overflow_dont, /* complain_on_overflow */
451 ppc64_elf_unhandled_reloc, /* special_function */
452 "R_PPC64_GLOB_DAT", /* name */
453 FALSE, /* partial_inplace */
454 0, /* src_mask */
455 ONES (64), /* dst_mask */
456 FALSE), /* pcrel_offset */
457
458 /* Created by the link editor. Marks a procedure linkage table
459 entry for a symbol. */
460 HOWTO (R_PPC64_JMP_SLOT, /* type */
461 0, /* rightshift */
462 0, /* size (0 = byte, 1 = short, 2 = long) */
463 0, /* bitsize */
464 FALSE, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_dont, /* complain_on_overflow */
467 ppc64_elf_unhandled_reloc, /* special_function */
468 "R_PPC64_JMP_SLOT", /* name */
469 FALSE, /* partial_inplace */
470 0, /* src_mask */
471 0, /* dst_mask */
472 FALSE), /* pcrel_offset */
473
474 /* Used only by the dynamic linker. When the object is run, this
475 doubleword64 is set to the load address of the object, plus the
476 addend. */
477 HOWTO (R_PPC64_RELATIVE, /* type */
478 0, /* rightshift */
479 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
480 64, /* bitsize */
481 FALSE, /* pc_relative */
482 0, /* bitpos */
483 complain_overflow_dont, /* complain_on_overflow */
484 bfd_elf_generic_reloc, /* special_function */
485 "R_PPC64_RELATIVE", /* name */
486 FALSE, /* partial_inplace */
487 0, /* src_mask */
488 ONES (64), /* dst_mask */
489 FALSE), /* pcrel_offset */
490
491 /* Like R_PPC64_ADDR32, but may be unaligned. */
492 HOWTO (R_PPC64_UADDR32, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC64_UADDR32", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 /* Like R_PPC64_ADDR16, but may be unaligned. */
507 HOWTO (R_PPC64_UADDR16, /* type */
508 0, /* rightshift */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
510 16, /* bitsize */
511 FALSE, /* pc_relative */
512 0, /* bitpos */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC64_UADDR16", /* name */
516 FALSE, /* partial_inplace */
517 0, /* src_mask */
518 0xffff, /* dst_mask */
519 FALSE), /* pcrel_offset */
520
521 /* 32-bit PC relative. */
522 HOWTO (R_PPC64_REL32, /* type */
523 0, /* rightshift */
524 2, /* size (0 = byte, 1 = short, 2 = long) */
525 32, /* bitsize */
526 TRUE, /* pc_relative */
527 0, /* bitpos */
528 /* FIXME: Verify. Was complain_overflow_bitfield. */
529 complain_overflow_signed, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC64_REL32", /* name */
532 FALSE, /* partial_inplace */
533 0, /* src_mask */
534 0xffffffff, /* dst_mask */
535 TRUE), /* pcrel_offset */
536
537 /* 32-bit relocation to the symbol's procedure linkage table. */
538 HOWTO (R_PPC64_PLT32, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 32, /* bitsize */
542 FALSE, /* pc_relative */
543 0, /* bitpos */
544 complain_overflow_bitfield, /* complain_on_overflow */
545 ppc64_elf_unhandled_reloc, /* special_function */
546 "R_PPC64_PLT32", /* name */
547 FALSE, /* partial_inplace */
548 0, /* src_mask */
549 0xffffffff, /* dst_mask */
550 FALSE), /* pcrel_offset */
551
552 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
553 FIXME: R_PPC64_PLTREL32 not supported. */
554 HOWTO (R_PPC64_PLTREL32, /* type */
555 0, /* rightshift */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
557 32, /* bitsize */
558 TRUE, /* pc_relative */
559 0, /* bitpos */
560 complain_overflow_signed, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_PPC64_PLTREL32", /* name */
563 FALSE, /* partial_inplace */
564 0, /* src_mask */
565 0xffffffff, /* dst_mask */
566 TRUE), /* pcrel_offset */
567
568 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
569 the symbol. */
570 HOWTO (R_PPC64_PLT16_LO, /* type */
571 0, /* rightshift */
572 1, /* size (0 = byte, 1 = short, 2 = long) */
573 16, /* bitsize */
574 FALSE, /* pc_relative */
575 0, /* bitpos */
576 complain_overflow_dont, /* complain_on_overflow */
577 ppc64_elf_unhandled_reloc, /* special_function */
578 "R_PPC64_PLT16_LO", /* name */
579 FALSE, /* partial_inplace */
580 0, /* src_mask */
581 0xffff, /* dst_mask */
582 FALSE), /* pcrel_offset */
583
584 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
585 the symbol. */
586 HOWTO (R_PPC64_PLT16_HI, /* type */
587 16, /* rightshift */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
589 16, /* bitsize */
590 FALSE, /* pc_relative */
591 0, /* bitpos */
592 complain_overflow_dont, /* complain_on_overflow */
593 ppc64_elf_unhandled_reloc, /* special_function */
594 "R_PPC64_PLT16_HI", /* name */
595 FALSE, /* partial_inplace */
596 0, /* src_mask */
597 0xffff, /* dst_mask */
598 FALSE), /* pcrel_offset */
599
600 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
601 the symbol. */
602 HOWTO (R_PPC64_PLT16_HA, /* type */
603 16, /* rightshift */
604 1, /* size (0 = byte, 1 = short, 2 = long) */
605 16, /* bitsize */
606 FALSE, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 ppc64_elf_unhandled_reloc, /* special_function */
610 "R_PPC64_PLT16_HA", /* name */
611 FALSE, /* partial_inplace */
612 0, /* src_mask */
613 0xffff, /* dst_mask */
614 FALSE), /* pcrel_offset */
615
616 /* 16-bit section relative relocation. */
617 HOWTO (R_PPC64_SECTOFF, /* type */
618 0, /* rightshift */
619 1, /* size (0 = byte, 1 = short, 2 = long) */
620 16, /* bitsize */
621 FALSE, /* pc_relative */
622 0, /* bitpos */
623 complain_overflow_bitfield, /* complain_on_overflow */
624 ppc64_elf_sectoff_reloc, /* special_function */
625 "R_PPC64_SECTOFF", /* name */
626 FALSE, /* partial_inplace */
627 0, /* src_mask */
628 0xffff, /* dst_mask */
629 FALSE), /* pcrel_offset */
630
631 /* Like R_PPC64_SECTOFF, but no overflow warning. */
632 HOWTO (R_PPC64_SECTOFF_LO, /* type */
633 0, /* rightshift */
634 1, /* size (0 = byte, 1 = short, 2 = long) */
635 16, /* bitsize */
636 FALSE, /* pc_relative */
637 0, /* bitpos */
638 complain_overflow_dont, /* complain_on_overflow */
639 ppc64_elf_sectoff_reloc, /* special_function */
640 "R_PPC64_SECTOFF_LO", /* name */
641 FALSE, /* partial_inplace */
642 0, /* src_mask */
643 0xffff, /* dst_mask */
644 FALSE), /* pcrel_offset */
645
646 /* 16-bit upper half section relative relocation. */
647 HOWTO (R_PPC64_SECTOFF_HI, /* type */
648 16, /* rightshift */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
650 16, /* bitsize */
651 FALSE, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_dont, /* complain_on_overflow */
654 ppc64_elf_sectoff_reloc, /* special_function */
655 "R_PPC64_SECTOFF_HI", /* name */
656 FALSE, /* partial_inplace */
657 0, /* src_mask */
658 0xffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
660
661 /* 16-bit upper half adjusted section relative relocation. */
662 HOWTO (R_PPC64_SECTOFF_HA, /* type */
663 16, /* rightshift */
664 1, /* size (0 = byte, 1 = short, 2 = long) */
665 16, /* bitsize */
666 FALSE, /* pc_relative */
667 0, /* bitpos */
668 complain_overflow_dont, /* complain_on_overflow */
669 ppc64_elf_sectoff_ha_reloc, /* special_function */
670 "R_PPC64_SECTOFF_HA", /* name */
671 FALSE, /* partial_inplace */
672 0, /* src_mask */
673 0xffff, /* dst_mask */
674 FALSE), /* pcrel_offset */
675
676 /* Like R_PPC64_REL24 without touching the two least significant bits. */
677 HOWTO (R_PPC64_REL30, /* type */
678 2, /* rightshift */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
680 30, /* bitsize */
681 TRUE, /* pc_relative */
682 0, /* bitpos */
683 complain_overflow_dont, /* complain_on_overflow */
684 bfd_elf_generic_reloc, /* special_function */
685 "R_PPC64_REL30", /* name */
686 FALSE, /* partial_inplace */
687 0, /* src_mask */
688 0xfffffffc, /* dst_mask */
689 TRUE), /* pcrel_offset */
690
691 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
692
693 /* A standard 64-bit relocation. */
694 HOWTO (R_PPC64_ADDR64, /* type */
695 0, /* rightshift */
696 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
697 64, /* bitsize */
698 FALSE, /* pc_relative */
699 0, /* bitpos */
700 complain_overflow_dont, /* complain_on_overflow */
701 bfd_elf_generic_reloc, /* special_function */
702 "R_PPC64_ADDR64", /* name */
703 FALSE, /* partial_inplace */
704 0, /* src_mask */
705 ONES (64), /* dst_mask */
706 FALSE), /* pcrel_offset */
707
708 /* The bits 32-47 of an address. */
709 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
710 32, /* rightshift */
711 1, /* size (0 = byte, 1 = short, 2 = long) */
712 16, /* bitsize */
713 FALSE, /* pc_relative */
714 0, /* bitpos */
715 complain_overflow_dont, /* complain_on_overflow */
716 bfd_elf_generic_reloc, /* special_function */
717 "R_PPC64_ADDR16_HIGHER", /* name */
718 FALSE, /* partial_inplace */
719 0, /* src_mask */
720 0xffff, /* dst_mask */
721 FALSE), /* pcrel_offset */
722
723 /* The bits 32-47 of an address, plus 1 if the contents of the low
724 16 bits, treated as a signed number, is negative. */
725 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
726 32, /* rightshift */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
728 16, /* bitsize */
729 FALSE, /* pc_relative */
730 0, /* bitpos */
731 complain_overflow_dont, /* complain_on_overflow */
732 ppc64_elf_ha_reloc, /* special_function */
733 "R_PPC64_ADDR16_HIGHERA", /* name */
734 FALSE, /* partial_inplace */
735 0, /* src_mask */
736 0xffff, /* dst_mask */
737 FALSE), /* pcrel_offset */
738
739 /* The bits 48-63 of an address. */
740 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
741 48, /* rightshift */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
743 16, /* bitsize */
744 FALSE, /* pc_relative */
745 0, /* bitpos */
746 complain_overflow_dont, /* complain_on_overflow */
747 bfd_elf_generic_reloc, /* special_function */
748 "R_PPC64_ADDR16_HIGHEST", /* name */
749 FALSE, /* partial_inplace */
750 0, /* src_mask */
751 0xffff, /* dst_mask */
752 FALSE), /* pcrel_offset */
753
754 /* The bits 48-63 of an address, plus 1 if the contents of the low
755 16 bits, treated as a signed number, is negative. */
756 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
757 48, /* rightshift */
758 1, /* size (0 = byte, 1 = short, 2 = long) */
759 16, /* bitsize */
760 FALSE, /* pc_relative */
761 0, /* bitpos */
762 complain_overflow_dont, /* complain_on_overflow */
763 ppc64_elf_ha_reloc, /* special_function */
764 "R_PPC64_ADDR16_HIGHESTA", /* name */
765 FALSE, /* partial_inplace */
766 0, /* src_mask */
767 0xffff, /* dst_mask */
768 FALSE), /* pcrel_offset */
769
770 /* Like ADDR64, but may be unaligned. */
771 HOWTO (R_PPC64_UADDR64, /* type */
772 0, /* rightshift */
773 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
774 64, /* bitsize */
775 FALSE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC64_UADDR64", /* name */
780 FALSE, /* partial_inplace */
781 0, /* src_mask */
782 ONES (64), /* dst_mask */
783 FALSE), /* pcrel_offset */
784
785 /* 64-bit relative relocation. */
786 HOWTO (R_PPC64_REL64, /* type */
787 0, /* rightshift */
788 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 64, /* bitsize */
790 TRUE, /* pc_relative */
791 0, /* bitpos */
792 complain_overflow_dont, /* complain_on_overflow */
793 bfd_elf_generic_reloc, /* special_function */
794 "R_PPC64_REL64", /* name */
795 FALSE, /* partial_inplace */
796 0, /* src_mask */
797 ONES (64), /* dst_mask */
798 TRUE), /* pcrel_offset */
799
800 /* 64-bit relocation to the symbol's procedure linkage table. */
801 HOWTO (R_PPC64_PLT64, /* type */
802 0, /* rightshift */
803 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
804 64, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc64_elf_unhandled_reloc, /* special_function */
809 "R_PPC64_PLT64", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 ONES (64), /* dst_mask */
813 FALSE), /* pcrel_offset */
814
815 /* 64-bit PC relative relocation to the symbol's procedure linkage
816 table. */
817 /* FIXME: R_PPC64_PLTREL64 not supported. */
818 HOWTO (R_PPC64_PLTREL64, /* type */
819 0, /* rightshift */
820 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
821 64, /* bitsize */
822 TRUE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc64_elf_unhandled_reloc, /* special_function */
826 "R_PPC64_PLTREL64", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 ONES (64), /* dst_mask */
830 TRUE), /* pcrel_offset */
831
832 /* 16 bit TOC-relative relocation. */
833
834 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
835 HOWTO (R_PPC64_TOC16, /* type */
836 0, /* rightshift */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
838 16, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_signed, /* complain_on_overflow */
842 ppc64_elf_toc_reloc, /* special_function */
843 "R_PPC64_TOC16", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* 16 bit TOC-relative relocation without overflow. */
850
851 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
852 HOWTO (R_PPC64_TOC16_LO, /* type */
853 0, /* rightshift */
854 1, /* size (0 = byte, 1 = short, 2 = long) */
855 16, /* bitsize */
856 FALSE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 ppc64_elf_toc_reloc, /* special_function */
860 "R_PPC64_TOC16_LO", /* name */
861 FALSE, /* partial_inplace */
862 0, /* src_mask */
863 0xffff, /* dst_mask */
864 FALSE), /* pcrel_offset */
865
866 /* 16 bit TOC-relative relocation, high 16 bits. */
867
868 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
869 HOWTO (R_PPC64_TOC16_HI, /* type */
870 16, /* rightshift */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
872 16, /* bitsize */
873 FALSE, /* pc_relative */
874 0, /* bitpos */
875 complain_overflow_dont, /* complain_on_overflow */
876 ppc64_elf_toc_reloc, /* special_function */
877 "R_PPC64_TOC16_HI", /* name */
878 FALSE, /* partial_inplace */
879 0, /* src_mask */
880 0xffff, /* dst_mask */
881 FALSE), /* pcrel_offset */
882
883 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
884 contents of the low 16 bits, treated as a signed number, is
885 negative. */
886
887 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
888 HOWTO (R_PPC64_TOC16_HA, /* type */
889 16, /* rightshift */
890 1, /* size (0 = byte, 1 = short, 2 = long) */
891 16, /* bitsize */
892 FALSE, /* pc_relative */
893 0, /* bitpos */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc64_elf_toc_ha_reloc, /* special_function */
896 "R_PPC64_TOC16_HA", /* name */
897 FALSE, /* partial_inplace */
898 0, /* src_mask */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
901
902 /* 64-bit relocation; insert value of TOC base (.TOC.). */
903
904 /* R_PPC64_TOC 51 doubleword64 .TOC. */
905 HOWTO (R_PPC64_TOC, /* type */
906 0, /* rightshift */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 64, /* bitsize */
909 FALSE, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_bitfield, /* complain_on_overflow */
912 ppc64_elf_toc64_reloc, /* special_function */
913 "R_PPC64_TOC", /* name */
914 FALSE, /* partial_inplace */
915 0, /* src_mask */
916 ONES (64), /* dst_mask */
917 FALSE), /* pcrel_offset */
918
919 /* Like R_PPC64_GOT16, but also informs the link editor that the
920 value to relocate may (!) refer to a PLT entry which the link
921 editor (a) may replace with the symbol value. If the link editor
922 is unable to fully resolve the symbol, it may (b) create a PLT
923 entry and store the address to the new PLT entry in the GOT.
924 This permits lazy resolution of function symbols at run time.
925 The link editor may also skip all of this and just (c) emit a
926 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
927 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
928 HOWTO (R_PPC64_PLTGOT16, /* type */
929 0, /* rightshift */
930 1, /* size (0 = byte, 1 = short, 2 = long) */
931 16, /* bitsize */
932 FALSE, /* pc_relative */
933 0, /* bitpos */
934 complain_overflow_signed, /* complain_on_overflow */
935 ppc64_elf_unhandled_reloc, /* special_function */
936 "R_PPC64_PLTGOT16", /* name */
937 FALSE, /* partial_inplace */
938 0, /* src_mask */
939 0xffff, /* dst_mask */
940 FALSE), /* pcrel_offset */
941
942 /* Like R_PPC64_PLTGOT16, but without overflow. */
943 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
944 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
945 0, /* rightshift */
946 1, /* size (0 = byte, 1 = short, 2 = long) */
947 16, /* bitsize */
948 FALSE, /* pc_relative */
949 0, /* bitpos */
950 complain_overflow_dont, /* complain_on_overflow */
951 ppc64_elf_unhandled_reloc, /* special_function */
952 "R_PPC64_PLTGOT16_LO", /* name */
953 FALSE, /* partial_inplace */
954 0, /* src_mask */
955 0xffff, /* dst_mask */
956 FALSE), /* pcrel_offset */
957
958 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
959 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
960 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
961 16, /* rightshift */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
963 16, /* bitsize */
964 FALSE, /* pc_relative */
965 0, /* bitpos */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_unhandled_reloc, /* special_function */
968 "R_PPC64_PLTGOT16_HI", /* name */
969 FALSE, /* partial_inplace */
970 0, /* src_mask */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
973
974 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
975 1 if the contents of the low 16 bits, treated as a signed number,
976 is negative. */
977 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
978 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
979 16, /* rightshift */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
981 16, /* bitsize */
982 FALSE, /* pc_relative */
983 0, /* bitpos */
984 complain_overflow_dont,/* complain_on_overflow */
985 ppc64_elf_unhandled_reloc, /* special_function */
986 "R_PPC64_PLTGOT16_HA", /* name */
987 FALSE, /* partial_inplace */
988 0, /* src_mask */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
991
992 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
993 HOWTO (R_PPC64_ADDR16_DS, /* type */
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
997 FALSE, /* pc_relative */
998 0, /* bitpos */
999 complain_overflow_bitfield, /* complain_on_overflow */
1000 bfd_elf_generic_reloc, /* special_function */
1001 "R_PPC64_ADDR16_DS", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xfffc, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1008 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1009 0, /* rightshift */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 16, /* bitsize */
1012 FALSE, /* pc_relative */
1013 0, /* bitpos */
1014 complain_overflow_dont,/* complain_on_overflow */
1015 bfd_elf_generic_reloc, /* special_function */
1016 "R_PPC64_ADDR16_LO_DS",/* name */
1017 FALSE, /* partial_inplace */
1018 0, /* src_mask */
1019 0xfffc, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1021
1022 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1023 HOWTO (R_PPC64_GOT16_DS, /* type */
1024 0, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 16, /* bitsize */
1027 FALSE, /* pc_relative */
1028 0, /* bitpos */
1029 complain_overflow_signed, /* complain_on_overflow */
1030 ppc64_elf_unhandled_reloc, /* special_function */
1031 "R_PPC64_GOT16_DS", /* name */
1032 FALSE, /* partial_inplace */
1033 0, /* src_mask */
1034 0xfffc, /* dst_mask */
1035 FALSE), /* pcrel_offset */
1036
1037 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1038 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1039 0, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 16, /* bitsize */
1042 FALSE, /* pc_relative */
1043 0, /* bitpos */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc64_elf_unhandled_reloc, /* special_function */
1046 "R_PPC64_GOT16_LO_DS", /* name */
1047 FALSE, /* partial_inplace */
1048 0, /* src_mask */
1049 0xfffc, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1051
1052 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1053 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1054 0, /* rightshift */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 16, /* bitsize */
1057 FALSE, /* pc_relative */
1058 0, /* bitpos */
1059 complain_overflow_dont, /* complain_on_overflow */
1060 ppc64_elf_unhandled_reloc, /* special_function */
1061 "R_PPC64_PLT16_LO_DS", /* name */
1062 FALSE, /* partial_inplace */
1063 0, /* src_mask */
1064 0xfffc, /* dst_mask */
1065 FALSE), /* pcrel_offset */
1066
1067 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1068 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1069 0, /* rightshift */
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1071 16, /* bitsize */
1072 FALSE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_bitfield, /* complain_on_overflow */
1075 ppc64_elf_sectoff_reloc, /* special_function */
1076 "R_PPC64_SECTOFF_DS", /* name */
1077 FALSE, /* partial_inplace */
1078 0, /* src_mask */
1079 0xfffc, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1081
1082 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1083 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1084 0, /* rightshift */
1085 1, /* size (0 = byte, 1 = short, 2 = long) */
1086 16, /* bitsize */
1087 FALSE, /* pc_relative */
1088 0, /* bitpos */
1089 complain_overflow_dont, /* complain_on_overflow */
1090 ppc64_elf_sectoff_reloc, /* special_function */
1091 "R_PPC64_SECTOFF_LO_DS",/* name */
1092 FALSE, /* partial_inplace */
1093 0, /* src_mask */
1094 0xfffc, /* dst_mask */
1095 FALSE), /* pcrel_offset */
1096
1097 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1098 HOWTO (R_PPC64_TOC16_DS, /* type */
1099 0, /* rightshift */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 16, /* bitsize */
1102 FALSE, /* pc_relative */
1103 0, /* bitpos */
1104 complain_overflow_signed, /* complain_on_overflow */
1105 ppc64_elf_toc_reloc, /* special_function */
1106 "R_PPC64_TOC16_DS", /* name */
1107 FALSE, /* partial_inplace */
1108 0, /* src_mask */
1109 0xfffc, /* dst_mask */
1110 FALSE), /* pcrel_offset */
1111
1112 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1113 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1114 0, /* rightshift */
1115 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 ppc64_elf_toc_reloc, /* special_function */
1121 "R_PPC64_TOC16_LO_DS", /* name */
1122 FALSE, /* partial_inplace */
1123 0, /* src_mask */
1124 0xfffc, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1126
1127 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1128 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1129 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1130 0, /* rightshift */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 16, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_signed, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_PLTGOT16_DS", /* name */
1138 FALSE, /* partial_inplace */
1139 0, /* src_mask */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1142
1143 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1144 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1145 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1146 0, /* rightshift */
1147 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 16, /* bitsize */
1149 FALSE, /* pc_relative */
1150 0, /* bitpos */
1151 complain_overflow_dont, /* complain_on_overflow */
1152 ppc64_elf_unhandled_reloc, /* special_function */
1153 "R_PPC64_PLTGOT16_LO_DS",/* name */
1154 FALSE, /* partial_inplace */
1155 0, /* src_mask */
1156 0xfffc, /* dst_mask */
1157 FALSE), /* pcrel_offset */
1158
1159 /* Marker reloc for TLS. */
1160 HOWTO (R_PPC64_TLS,
1161 0, /* rightshift */
1162 2, /* size (0 = byte, 1 = short, 2 = long) */
1163 32, /* bitsize */
1164 FALSE, /* pc_relative */
1165 0, /* bitpos */
1166 complain_overflow_dont, /* complain_on_overflow */
1167 bfd_elf_generic_reloc, /* special_function */
1168 "R_PPC64_TLS", /* name */
1169 FALSE, /* partial_inplace */
1170 0, /* src_mask */
1171 0, /* dst_mask */
1172 FALSE), /* pcrel_offset */
1173
1174 /* Computes the load module index of the load module that contains the
1175 definition of its TLS sym. */
1176 HOWTO (R_PPC64_DTPMOD64,
1177 0, /* rightshift */
1178 4, /* size (0 = byte, 1 = short, 2 = long) */
1179 64, /* bitsize */
1180 FALSE, /* pc_relative */
1181 0, /* bitpos */
1182 complain_overflow_dont, /* complain_on_overflow */
1183 ppc64_elf_unhandled_reloc, /* special_function */
1184 "R_PPC64_DTPMOD64", /* name */
1185 FALSE, /* partial_inplace */
1186 0, /* src_mask */
1187 ONES (64), /* dst_mask */
1188 FALSE), /* pcrel_offset */
1189
1190 /* Computes a dtv-relative displacement, the difference between the value
1191 of sym+add and the base address of the thread-local storage block that
1192 contains the definition of sym, minus 0x8000. */
1193 HOWTO (R_PPC64_DTPREL64,
1194 0, /* rightshift */
1195 4, /* size (0 = byte, 1 = short, 2 = long) */
1196 64, /* bitsize */
1197 FALSE, /* pc_relative */
1198 0, /* bitpos */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc64_elf_unhandled_reloc, /* special_function */
1201 "R_PPC64_DTPREL64", /* name */
1202 FALSE, /* partial_inplace */
1203 0, /* src_mask */
1204 ONES (64), /* dst_mask */
1205 FALSE), /* pcrel_offset */
1206
1207 /* A 16 bit dtprel reloc. */
1208 HOWTO (R_PPC64_DTPREL16,
1209 0, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 16, /* bitsize */
1212 FALSE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 ppc64_elf_unhandled_reloc, /* special_function */
1216 "R_PPC64_DTPREL16", /* name */
1217 FALSE, /* partial_inplace */
1218 0, /* src_mask */
1219 0xffff, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1221
1222 /* Like DTPREL16, but no overflow. */
1223 HOWTO (R_PPC64_DTPREL16_LO,
1224 0, /* rightshift */
1225 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 16, /* bitsize */
1227 FALSE, /* pc_relative */
1228 0, /* bitpos */
1229 complain_overflow_dont, /* complain_on_overflow */
1230 ppc64_elf_unhandled_reloc, /* special_function */
1231 "R_PPC64_DTPREL16_LO", /* name */
1232 FALSE, /* partial_inplace */
1233 0, /* src_mask */
1234 0xffff, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1236
1237 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1238 HOWTO (R_PPC64_DTPREL16_HI,
1239 16, /* rightshift */
1240 1, /* size (0 = byte, 1 = short, 2 = long) */
1241 16, /* bitsize */
1242 FALSE, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 ppc64_elf_unhandled_reloc, /* special_function */
1246 "R_PPC64_DTPREL16_HI", /* name */
1247 FALSE, /* partial_inplace */
1248 0, /* src_mask */
1249 0xffff, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1253 HOWTO (R_PPC64_DTPREL16_HA,
1254 16, /* rightshift */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 16, /* bitsize */
1257 FALSE, /* pc_relative */
1258 0, /* bitpos */
1259 complain_overflow_dont, /* complain_on_overflow */
1260 ppc64_elf_unhandled_reloc, /* special_function */
1261 "R_PPC64_DTPREL16_HA", /* name */
1262 FALSE, /* partial_inplace */
1263 0, /* src_mask */
1264 0xffff, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1266
1267 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1268 HOWTO (R_PPC64_DTPREL16_HIGHER,
1269 32, /* rightshift */
1270 1, /* size (0 = byte, 1 = short, 2 = long) */
1271 16, /* bitsize */
1272 FALSE, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 ppc64_elf_unhandled_reloc, /* special_function */
1276 "R_PPC64_DTPREL16_HIGHER", /* name */
1277 FALSE, /* partial_inplace */
1278 0, /* src_mask */
1279 0xffff, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
1282 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1283 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1284 32, /* rightshift */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1286 16, /* bitsize */
1287 FALSE, /* pc_relative */
1288 0, /* bitpos */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 ppc64_elf_unhandled_reloc, /* special_function */
1291 "R_PPC64_DTPREL16_HIGHERA", /* name */
1292 FALSE, /* partial_inplace */
1293 0, /* src_mask */
1294 0xffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1296
1297 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1298 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1299 48, /* rightshift */
1300 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 16, /* bitsize */
1302 FALSE, /* pc_relative */
1303 0, /* bitpos */
1304 complain_overflow_dont, /* complain_on_overflow */
1305 ppc64_elf_unhandled_reloc, /* special_function */
1306 "R_PPC64_DTPREL16_HIGHEST", /* name */
1307 FALSE, /* partial_inplace */
1308 0, /* src_mask */
1309 0xffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1311
1312 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1313 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1314 48, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_dont, /* complain_on_overflow */
1320 ppc64_elf_unhandled_reloc, /* special_function */
1321 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* Like DTPREL16, but for insns with a DS field. */
1328 HOWTO (R_PPC64_DTPREL16_DS,
1329 0, /* rightshift */
1330 1, /* size (0 = byte, 1 = short, 2 = long) */
1331 16, /* bitsize */
1332 FALSE, /* pc_relative */
1333 0, /* bitpos */
1334 complain_overflow_signed, /* complain_on_overflow */
1335 ppc64_elf_unhandled_reloc, /* special_function */
1336 "R_PPC64_DTPREL16_DS", /* name */
1337 FALSE, /* partial_inplace */
1338 0, /* src_mask */
1339 0xfffc, /* dst_mask */
1340 FALSE), /* pcrel_offset */
1341
1342 /* Like DTPREL16_DS, but no overflow. */
1343 HOWTO (R_PPC64_DTPREL16_LO_DS,
1344 0, /* rightshift */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1346 16, /* bitsize */
1347 FALSE, /* pc_relative */
1348 0, /* bitpos */
1349 complain_overflow_dont, /* complain_on_overflow */
1350 ppc64_elf_unhandled_reloc, /* special_function */
1351 "R_PPC64_DTPREL16_LO_DS", /* name */
1352 FALSE, /* partial_inplace */
1353 0, /* src_mask */
1354 0xfffc, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1356
1357 /* Computes a tp-relative displacement, the difference between the value of
1358 sym+add and the value of the thread pointer (r13). */
1359 HOWTO (R_PPC64_TPREL64,
1360 0, /* rightshift */
1361 4, /* size (0 = byte, 1 = short, 2 = long) */
1362 64, /* bitsize */
1363 FALSE, /* pc_relative */
1364 0, /* bitpos */
1365 complain_overflow_dont, /* complain_on_overflow */
1366 ppc64_elf_unhandled_reloc, /* special_function */
1367 "R_PPC64_TPREL64", /* name */
1368 FALSE, /* partial_inplace */
1369 0, /* src_mask */
1370 ONES (64), /* dst_mask */
1371 FALSE), /* pcrel_offset */
1372
1373 /* A 16 bit tprel reloc. */
1374 HOWTO (R_PPC64_TPREL16,
1375 0, /* rightshift */
1376 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 16, /* bitsize */
1378 FALSE, /* pc_relative */
1379 0, /* bitpos */
1380 complain_overflow_signed, /* complain_on_overflow */
1381 ppc64_elf_unhandled_reloc, /* special_function */
1382 "R_PPC64_TPREL16", /* name */
1383 FALSE, /* partial_inplace */
1384 0, /* src_mask */
1385 0xffff, /* dst_mask */
1386 FALSE), /* pcrel_offset */
1387
1388 /* Like TPREL16, but no overflow. */
1389 HOWTO (R_PPC64_TPREL16_LO,
1390 0, /* rightshift */
1391 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 16, /* bitsize */
1393 FALSE, /* pc_relative */
1394 0, /* bitpos */
1395 complain_overflow_dont, /* complain_on_overflow */
1396 ppc64_elf_unhandled_reloc, /* special_function */
1397 "R_PPC64_TPREL16_LO", /* name */
1398 FALSE, /* partial_inplace */
1399 0, /* src_mask */
1400 0xffff, /* dst_mask */
1401 FALSE), /* pcrel_offset */
1402
1403 /* Like TPREL16_LO, but next higher group of 16 bits. */
1404 HOWTO (R_PPC64_TPREL16_HI,
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 16, /* bitsize */
1408 FALSE, /* pc_relative */
1409 0, /* bitpos */
1410 complain_overflow_dont, /* complain_on_overflow */
1411 ppc64_elf_unhandled_reloc, /* special_function */
1412 "R_PPC64_TPREL16_HI", /* name */
1413 FALSE, /* partial_inplace */
1414 0, /* src_mask */
1415 0xffff, /* dst_mask */
1416 FALSE), /* pcrel_offset */
1417
1418 /* Like TPREL16_HI, but adjust for low 16 bits. */
1419 HOWTO (R_PPC64_TPREL16_HA,
1420 16, /* rightshift */
1421 1, /* size (0 = byte, 1 = short, 2 = long) */
1422 16, /* bitsize */
1423 FALSE, /* pc_relative */
1424 0, /* bitpos */
1425 complain_overflow_dont, /* complain_on_overflow */
1426 ppc64_elf_unhandled_reloc, /* special_function */
1427 "R_PPC64_TPREL16_HA", /* name */
1428 FALSE, /* partial_inplace */
1429 0, /* src_mask */
1430 0xffff, /* dst_mask */
1431 FALSE), /* pcrel_offset */
1432
1433 /* Like TPREL16_HI, but next higher group of 16 bits. */
1434 HOWTO (R_PPC64_TPREL16_HIGHER,
1435 32, /* rightshift */
1436 1, /* size (0 = byte, 1 = short, 2 = long) */
1437 16, /* bitsize */
1438 FALSE, /* pc_relative */
1439 0, /* bitpos */
1440 complain_overflow_dont, /* complain_on_overflow */
1441 ppc64_elf_unhandled_reloc, /* special_function */
1442 "R_PPC64_TPREL16_HIGHER", /* name */
1443 FALSE, /* partial_inplace */
1444 0, /* src_mask */
1445 0xffff, /* dst_mask */
1446 FALSE), /* pcrel_offset */
1447
1448 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1449 HOWTO (R_PPC64_TPREL16_HIGHERA,
1450 32, /* rightshift */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1452 16, /* bitsize */
1453 FALSE, /* pc_relative */
1454 0, /* bitpos */
1455 complain_overflow_dont, /* complain_on_overflow */
1456 ppc64_elf_unhandled_reloc, /* special_function */
1457 "R_PPC64_TPREL16_HIGHERA", /* name */
1458 FALSE, /* partial_inplace */
1459 0, /* src_mask */
1460 0xffff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
1462
1463 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1464 HOWTO (R_PPC64_TPREL16_HIGHEST,
1465 48, /* rightshift */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1467 16, /* bitsize */
1468 FALSE, /* pc_relative */
1469 0, /* bitpos */
1470 complain_overflow_dont, /* complain_on_overflow */
1471 ppc64_elf_unhandled_reloc, /* special_function */
1472 "R_PPC64_TPREL16_HIGHEST", /* name */
1473 FALSE, /* partial_inplace */
1474 0, /* src_mask */
1475 0xffff, /* dst_mask */
1476 FALSE), /* pcrel_offset */
1477
1478 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1479 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1480 48, /* rightshift */
1481 1, /* size (0 = byte, 1 = short, 2 = long) */
1482 16, /* bitsize */
1483 FALSE, /* pc_relative */
1484 0, /* bitpos */
1485 complain_overflow_dont, /* complain_on_overflow */
1486 ppc64_elf_unhandled_reloc, /* special_function */
1487 "R_PPC64_TPREL16_HIGHESTA", /* name */
1488 FALSE, /* partial_inplace */
1489 0, /* src_mask */
1490 0xffff, /* dst_mask */
1491 FALSE), /* pcrel_offset */
1492
1493 /* Like TPREL16, but for insns with a DS field. */
1494 HOWTO (R_PPC64_TPREL16_DS,
1495 0, /* rightshift */
1496 1, /* size (0 = byte, 1 = short, 2 = long) */
1497 16, /* bitsize */
1498 FALSE, /* pc_relative */
1499 0, /* bitpos */
1500 complain_overflow_signed, /* complain_on_overflow */
1501 ppc64_elf_unhandled_reloc, /* special_function */
1502 "R_PPC64_TPREL16_DS", /* name */
1503 FALSE, /* partial_inplace */
1504 0, /* src_mask */
1505 0xfffc, /* dst_mask */
1506 FALSE), /* pcrel_offset */
1507
1508 /* Like TPREL16_DS, but no overflow. */
1509 HOWTO (R_PPC64_TPREL16_LO_DS,
1510 0, /* rightshift */
1511 1, /* size (0 = byte, 1 = short, 2 = long) */
1512 16, /* bitsize */
1513 FALSE, /* pc_relative */
1514 0, /* bitpos */
1515 complain_overflow_dont, /* complain_on_overflow */
1516 ppc64_elf_unhandled_reloc, /* special_function */
1517 "R_PPC64_TPREL16_LO_DS", /* name */
1518 FALSE, /* partial_inplace */
1519 0, /* src_mask */
1520 0xfffc, /* dst_mask */
1521 FALSE), /* pcrel_offset */
1522
1523 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1524 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1525 to the first entry relative to the TOC base (r2). */
1526 HOWTO (R_PPC64_GOT_TLSGD16,
1527 0, /* rightshift */
1528 1, /* size (0 = byte, 1 = short, 2 = long) */
1529 16, /* bitsize */
1530 FALSE, /* pc_relative */
1531 0, /* bitpos */
1532 complain_overflow_signed, /* complain_on_overflow */
1533 ppc64_elf_unhandled_reloc, /* special_function */
1534 "R_PPC64_GOT_TLSGD16", /* name */
1535 FALSE, /* partial_inplace */
1536 0, /* src_mask */
1537 0xffff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539
1540 /* Like GOT_TLSGD16, but no overflow. */
1541 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1542 0, /* rightshift */
1543 1, /* size (0 = byte, 1 = short, 2 = long) */
1544 16, /* bitsize */
1545 FALSE, /* pc_relative */
1546 0, /* bitpos */
1547 complain_overflow_dont, /* complain_on_overflow */
1548 ppc64_elf_unhandled_reloc, /* special_function */
1549 "R_PPC64_GOT_TLSGD16_LO", /* name */
1550 FALSE, /* partial_inplace */
1551 0, /* src_mask */
1552 0xffff, /* dst_mask */
1553 FALSE), /* pcrel_offset */
1554
1555 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1556 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1557 16, /* rightshift */
1558 1, /* size (0 = byte, 1 = short, 2 = long) */
1559 16, /* bitsize */
1560 FALSE, /* pc_relative */
1561 0, /* bitpos */
1562 complain_overflow_dont, /* complain_on_overflow */
1563 ppc64_elf_unhandled_reloc, /* special_function */
1564 "R_PPC64_GOT_TLSGD16_HI", /* name */
1565 FALSE, /* partial_inplace */
1566 0, /* src_mask */
1567 0xffff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1569
1570 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1571 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1572 16, /* rightshift */
1573 1, /* size (0 = byte, 1 = short, 2 = long) */
1574 16, /* bitsize */
1575 FALSE, /* pc_relative */
1576 0, /* bitpos */
1577 complain_overflow_dont, /* complain_on_overflow */
1578 ppc64_elf_unhandled_reloc, /* special_function */
1579 "R_PPC64_GOT_TLSGD16_HA", /* name */
1580 FALSE, /* partial_inplace */
1581 0, /* src_mask */
1582 0xffff, /* dst_mask */
1583 FALSE), /* pcrel_offset */
1584
1585 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1586 with values (sym+add)@dtpmod and zero, and computes the offset to the
1587 first entry relative to the TOC base (r2). */
1588 HOWTO (R_PPC64_GOT_TLSLD16,
1589 0, /* rightshift */
1590 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 16, /* bitsize */
1592 FALSE, /* pc_relative */
1593 0, /* bitpos */
1594 complain_overflow_signed, /* complain_on_overflow */
1595 ppc64_elf_unhandled_reloc, /* special_function */
1596 "R_PPC64_GOT_TLSLD16", /* name */
1597 FALSE, /* partial_inplace */
1598 0, /* src_mask */
1599 0xffff, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1601
1602 /* Like GOT_TLSLD16, but no overflow. */
1603 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1604 0, /* rightshift */
1605 1, /* size (0 = byte, 1 = short, 2 = long) */
1606 16, /* bitsize */
1607 FALSE, /* pc_relative */
1608 0, /* bitpos */
1609 complain_overflow_dont, /* complain_on_overflow */
1610 ppc64_elf_unhandled_reloc, /* special_function */
1611 "R_PPC64_GOT_TLSLD16_LO", /* name */
1612 FALSE, /* partial_inplace */
1613 0, /* src_mask */
1614 0xffff, /* dst_mask */
1615 FALSE), /* pcrel_offset */
1616
1617 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1618 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1619 16, /* rightshift */
1620 1, /* size (0 = byte, 1 = short, 2 = long) */
1621 16, /* bitsize */
1622 FALSE, /* pc_relative */
1623 0, /* bitpos */
1624 complain_overflow_dont, /* complain_on_overflow */
1625 ppc64_elf_unhandled_reloc, /* special_function */
1626 "R_PPC64_GOT_TLSLD16_HI", /* name */
1627 FALSE, /* partial_inplace */
1628 0, /* src_mask */
1629 0xffff, /* dst_mask */
1630 FALSE), /* pcrel_offset */
1631
1632 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1633 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1634 16, /* rightshift */
1635 1, /* size (0 = byte, 1 = short, 2 = long) */
1636 16, /* bitsize */
1637 FALSE, /* pc_relative */
1638 0, /* bitpos */
1639 complain_overflow_dont, /* complain_on_overflow */
1640 ppc64_elf_unhandled_reloc, /* special_function */
1641 "R_PPC64_GOT_TLSLD16_HA", /* name */
1642 FALSE, /* partial_inplace */
1643 0, /* src_mask */
1644 0xffff, /* dst_mask */
1645 FALSE), /* pcrel_offset */
1646
1647 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1648 the offset to the entry relative to the TOC base (r2). */
1649 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1650 0, /* rightshift */
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 16, /* bitsize */
1653 FALSE, /* pc_relative */
1654 0, /* bitpos */
1655 complain_overflow_signed, /* complain_on_overflow */
1656 ppc64_elf_unhandled_reloc, /* special_function */
1657 "R_PPC64_GOT_DTPREL16_DS", /* name */
1658 FALSE, /* partial_inplace */
1659 0, /* src_mask */
1660 0xfffc, /* dst_mask */
1661 FALSE), /* pcrel_offset */
1662
1663 /* Like GOT_DTPREL16_DS, but no overflow. */
1664 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1665 0, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1667 16, /* bitsize */
1668 FALSE, /* pc_relative */
1669 0, /* bitpos */
1670 complain_overflow_dont, /* complain_on_overflow */
1671 ppc64_elf_unhandled_reloc, /* special_function */
1672 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1673 FALSE, /* partial_inplace */
1674 0, /* src_mask */
1675 0xfffc, /* dst_mask */
1676 FALSE), /* pcrel_offset */
1677
1678 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1679 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1682 16, /* bitsize */
1683 FALSE, /* pc_relative */
1684 0, /* bitpos */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 ppc64_elf_unhandled_reloc, /* special_function */
1687 "R_PPC64_GOT_DTPREL16_HI", /* name */
1688 FALSE, /* partial_inplace */
1689 0, /* src_mask */
1690 0xffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1692
1693 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1694 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1695 16, /* rightshift */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1697 16, /* bitsize */
1698 FALSE, /* pc_relative */
1699 0, /* bitpos */
1700 complain_overflow_dont, /* complain_on_overflow */
1701 ppc64_elf_unhandled_reloc, /* special_function */
1702 "R_PPC64_GOT_DTPREL16_HA", /* name */
1703 FALSE, /* partial_inplace */
1704 0, /* src_mask */
1705 0xffff, /* dst_mask */
1706 FALSE), /* pcrel_offset */
1707
1708 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1709 offset to the entry relative to the TOC base (r2). */
1710 HOWTO (R_PPC64_GOT_TPREL16_DS,
1711 0, /* rightshift */
1712 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 16, /* bitsize */
1714 FALSE, /* pc_relative */
1715 0, /* bitpos */
1716 complain_overflow_signed, /* complain_on_overflow */
1717 ppc64_elf_unhandled_reloc, /* special_function */
1718 "R_PPC64_GOT_TPREL16_DS", /* name */
1719 FALSE, /* partial_inplace */
1720 0, /* src_mask */
1721 0xffff, /* dst_mask */
1722 FALSE), /* pcrel_offset */
1723
1724 /* Like GOT_TPREL16_DS, but no overflow. */
1725 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1726 0, /* rightshift */
1727 1, /* size (0 = byte, 1 = short, 2 = long) */
1728 16, /* bitsize */
1729 FALSE, /* pc_relative */
1730 0, /* bitpos */
1731 complain_overflow_dont, /* complain_on_overflow */
1732 ppc64_elf_unhandled_reloc, /* special_function */
1733 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1734 FALSE, /* partial_inplace */
1735 0, /* src_mask */
1736 0xffff, /* dst_mask */
1737 FALSE), /* pcrel_offset */
1738
1739 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1740 HOWTO (R_PPC64_GOT_TPREL16_HI,
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1743 16, /* bitsize */
1744 FALSE, /* pc_relative */
1745 0, /* bitpos */
1746 complain_overflow_dont, /* complain_on_overflow */
1747 ppc64_elf_unhandled_reloc, /* special_function */
1748 "R_PPC64_GOT_TPREL16_HI", /* name */
1749 FALSE, /* partial_inplace */
1750 0, /* src_mask */
1751 0xffff, /* dst_mask */
1752 FALSE), /* pcrel_offset */
1753
1754 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1755 HOWTO (R_PPC64_GOT_TPREL16_HA,
1756 16, /* rightshift */
1757 1, /* size (0 = byte, 1 = short, 2 = long) */
1758 16, /* bitsize */
1759 FALSE, /* pc_relative */
1760 0, /* bitpos */
1761 complain_overflow_dont, /* complain_on_overflow */
1762 ppc64_elf_unhandled_reloc, /* special_function */
1763 "R_PPC64_GOT_TPREL16_HA", /* name */
1764 FALSE, /* partial_inplace */
1765 0, /* src_mask */
1766 0xffff, /* dst_mask */
1767 FALSE), /* pcrel_offset */
1768
1769 /* GNU extension to record C++ vtable hierarchy. */
1770 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1771 0, /* rightshift */
1772 0, /* size (0 = byte, 1 = short, 2 = long) */
1773 0, /* bitsize */
1774 FALSE, /* pc_relative */
1775 0, /* bitpos */
1776 complain_overflow_dont, /* complain_on_overflow */
1777 NULL, /* special_function */
1778 "R_PPC64_GNU_VTINHERIT", /* name */
1779 FALSE, /* partial_inplace */
1780 0, /* src_mask */
1781 0, /* dst_mask */
1782 FALSE), /* pcrel_offset */
1783
1784 /* GNU extension to record C++ vtable member usage. */
1785 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1786 0, /* rightshift */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1788 0, /* bitsize */
1789 FALSE, /* pc_relative */
1790 0, /* bitpos */
1791 complain_overflow_dont, /* complain_on_overflow */
1792 NULL, /* special_function */
1793 "R_PPC64_GNU_VTENTRY", /* name */
1794 FALSE, /* partial_inplace */
1795 0, /* src_mask */
1796 0, /* dst_mask */
1797 FALSE), /* pcrel_offset */
1798 };
1799
1800 \f
1801 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1802 be done. */
1803
1804 static void
1805 ppc_howto_init ()
1806 {
1807 unsigned int i, type;
1808
1809 for (i = 0;
1810 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1811 i++)
1812 {
1813 type = ppc64_elf_howto_raw[i].type;
1814 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1815 / sizeof (ppc64_elf_howto_table[0])));
1816 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1817 }
1818 }
1819
1820 static reloc_howto_type *
1821 ppc64_elf_reloc_type_lookup (abfd, code)
1822 bfd *abfd ATTRIBUTE_UNUSED;
1823 bfd_reloc_code_real_type code;
1824 {
1825 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1826
1827 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1828 /* Initialize howto table if needed. */
1829 ppc_howto_init ();
1830
1831 switch ((int) code)
1832 {
1833 default:
1834 return (reloc_howto_type *) NULL;
1835
1836 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1837 break;
1838 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1839 break;
1840 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1841 break;
1842 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1843 break;
1844 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1845 break;
1846 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1847 break;
1848 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1849 break;
1850 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1851 break;
1852 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1853 break;
1854 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1855 break;
1856 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1857 break;
1858 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1859 break;
1860 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1861 break;
1862 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1863 break;
1864 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1865 break;
1866 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1867 break;
1868 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1869 break;
1870 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1871 break;
1872 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1873 break;
1874 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1875 break;
1876 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1877 break;
1878 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1879 break;
1880 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1881 break;
1882 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1883 break;
1884 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1885 break;
1886 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1887 break;
1888 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1889 break;
1890 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1891 break;
1892 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1893 break;
1894 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1895 break;
1896 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1897 break;
1898 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1899 break;
1900 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1901 break;
1902 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1903 break;
1904 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1905 break;
1906 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1907 break;
1908 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1909 break;
1910 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1911 break;
1912 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1913 break;
1914 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1915 break;
1916 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1917 break;
1918 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1919 break;
1920 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1921 break;
1922 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1923 break;
1924 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1925 break;
1926 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1927 break;
1928 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1929 break;
1930 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1931 break;
1932 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1933 break;
1934 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1935 break;
1936 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1937 break;
1938 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1939 break;
1940 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1941 break;
1942 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1943 break;
1944 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1945 break;
1946 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
1947 break;
1948 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
1949 break;
1950 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
1951 break;
1952 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
1953 break;
1954 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
1955 break;
1956 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
1957 break;
1958 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
1959 break;
1960 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
1961 break;
1962 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
1963 break;
1964 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
1965 break;
1966 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
1967 break;
1968 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
1969 break;
1970 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
1971 break;
1972 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
1973 break;
1974 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
1975 break;
1976 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
1977 break;
1978 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
1979 break;
1980 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
1981 break;
1982 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
1983 break;
1984 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
1985 break;
1986 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
1987 break;
1988 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
1989 break;
1990 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
1991 break;
1992 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
1993 break;
1994 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
1995 break;
1996 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
1997 break;
1998 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
1999 break;
2000 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2001 break;
2002 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2003 break;
2004 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2005 break;
2006 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2007 break;
2008 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2009 break;
2010 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2011 break;
2012 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2013 break;
2014 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2015 break;
2016 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2017 break;
2018 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2019 break;
2020 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2021 break;
2022 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2023 break;
2024 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2025 break;
2026 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2027 break;
2028 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2029 break;
2030 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2031 break;
2032 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2033 break;
2034 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2035 break;
2036 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2037 break;
2038 }
2039
2040 return ppc64_elf_howto_table[(int) r];
2041 };
2042
2043 /* Set the howto pointer for a PowerPC ELF reloc. */
2044
2045 static void
2046 ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
2047 bfd *abfd ATTRIBUTE_UNUSED;
2048 arelent *cache_ptr;
2049 Elf_Internal_Rela *dst;
2050 {
2051 unsigned int type;
2052
2053 /* Initialize howto table if needed. */
2054 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2055 ppc_howto_init ();
2056
2057 type = ELF64_R_TYPE (dst->r_info);
2058 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2059 / sizeof (ppc64_elf_howto_table[0])));
2060 cache_ptr->howto = ppc64_elf_howto_table[type];
2061 }
2062
2063 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2064
2065 static bfd_reloc_status_type
2066 ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data,
2067 input_section, output_bfd, error_message)
2068 bfd *abfd;
2069 arelent *reloc_entry;
2070 asymbol *symbol;
2071 PTR data;
2072 asection *input_section;
2073 bfd *output_bfd;
2074 char **error_message;
2075 {
2076 /* If this is a relocatable link (output_bfd test tells us), just
2077 call the generic function. Any adjustment will be done at final
2078 link time. */
2079 if (output_bfd != NULL)
2080 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2081 input_section, output_bfd, error_message);
2082
2083 /* Adjust the addend for sign extension of the low 16 bits.
2084 We won't actually be using the low 16 bits, so trashing them
2085 doesn't matter. */
2086 reloc_entry->addend += 0x8000;
2087 return bfd_reloc_continue;
2088 }
2089
2090 static bfd_reloc_status_type
2091 ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data,
2092 input_section, output_bfd, error_message)
2093 bfd *abfd;
2094 arelent *reloc_entry;
2095 asymbol *symbol;
2096 PTR data;
2097 asection *input_section;
2098 bfd *output_bfd;
2099 char **error_message;
2100 {
2101 long insn;
2102 enum elf_ppc64_reloc_type r_type;
2103 bfd_size_type octets;
2104 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2105 bfd_boolean is_power4 = FALSE;
2106
2107 /* If this is a relocatable link (output_bfd test tells us), just
2108 call the generic function. Any adjustment will be done at final
2109 link time. */
2110 if (output_bfd != NULL)
2111 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2112 input_section, output_bfd, error_message);
2113
2114 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2115 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2116 insn &= ~(0x01 << 21);
2117 r_type = (enum elf_ppc64_reloc_type) reloc_entry->howto->type;
2118 if (r_type == R_PPC64_ADDR14_BRTAKEN
2119 || r_type == R_PPC64_REL14_BRTAKEN)
2120 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2121
2122 if (is_power4)
2123 {
2124 /* Set 'a' bit. This is 0b00010 in BO field for branch
2125 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2126 for branch on CTR insns (BO == 1a00t or 1a01t). */
2127 if ((insn & (0x14 << 21)) == (0x04 << 21))
2128 insn |= 0x02 << 21;
2129 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2130 insn |= 0x08 << 21;
2131 else
2132 return bfd_reloc_continue;
2133 }
2134 else
2135 {
2136 bfd_vma target = 0;
2137 bfd_vma from;
2138
2139 if (!bfd_is_com_section (symbol->section))
2140 target = symbol->value;
2141 target += symbol->section->output_section->vma;
2142 target += symbol->section->output_offset;
2143 target += reloc_entry->addend;
2144
2145 from = (reloc_entry->address
2146 + input_section->output_offset
2147 + input_section->output_section->vma);
2148
2149 /* Invert 'y' bit if not the default. */
2150 if ((bfd_signed_vma) (target - from) < 0)
2151 insn ^= 0x01 << 21;
2152 }
2153 bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets);
2154 return bfd_reloc_continue;
2155 }
2156
2157 static bfd_reloc_status_type
2158 ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data,
2159 input_section, output_bfd, error_message)
2160 bfd *abfd;
2161 arelent *reloc_entry;
2162 asymbol *symbol;
2163 PTR data;
2164 asection *input_section;
2165 bfd *output_bfd;
2166 char **error_message;
2167 {
2168 /* If this is a relocatable link (output_bfd test tells us), just
2169 call the generic function. Any adjustment will be done at final
2170 link time. */
2171 if (output_bfd != NULL)
2172 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2173 input_section, output_bfd, error_message);
2174
2175 /* Subtract the symbol section base address. */
2176 reloc_entry->addend -= symbol->section->output_section->vma;
2177 return bfd_reloc_continue;
2178 }
2179
2180 static bfd_reloc_status_type
2181 ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data,
2182 input_section, output_bfd, error_message)
2183 bfd *abfd;
2184 arelent *reloc_entry;
2185 asymbol *symbol;
2186 PTR data;
2187 asection *input_section;
2188 bfd *output_bfd;
2189 char **error_message;
2190 {
2191 /* If this is a relocatable link (output_bfd test tells us), just
2192 call the generic function. Any adjustment will be done at final
2193 link time. */
2194 if (output_bfd != NULL)
2195 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2196 input_section, output_bfd, error_message);
2197
2198 /* Subtract the symbol section base address. */
2199 reloc_entry->addend -= symbol->section->output_section->vma;
2200
2201 /* Adjust the addend for sign extension of the low 16 bits. */
2202 reloc_entry->addend += 0x8000;
2203 return bfd_reloc_continue;
2204 }
2205
2206 static bfd_reloc_status_type
2207 ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data,
2208 input_section, output_bfd, error_message)
2209 bfd *abfd;
2210 arelent *reloc_entry;
2211 asymbol *symbol;
2212 PTR data;
2213 asection *input_section;
2214 bfd *output_bfd;
2215 char **error_message;
2216 {
2217 bfd_vma TOCstart;
2218
2219 /* If this is a relocatable link (output_bfd test tells us), just
2220 call the generic function. Any adjustment will be done at final
2221 link time. */
2222 if (output_bfd != NULL)
2223 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2224 input_section, output_bfd, error_message);
2225
2226 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2227 if (TOCstart == 0)
2228 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2229
2230 /* Subtract the TOC base address. */
2231 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2232 return bfd_reloc_continue;
2233 }
2234
2235 static bfd_reloc_status_type
2236 ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data,
2237 input_section, output_bfd, error_message)
2238 bfd *abfd;
2239 arelent *reloc_entry;
2240 asymbol *symbol;
2241 PTR data;
2242 asection *input_section;
2243 bfd *output_bfd;
2244 char **error_message;
2245 {
2246 bfd_vma TOCstart;
2247
2248 /* If this is a relocatable link (output_bfd test tells us), just
2249 call the generic function. Any adjustment will be done at final
2250 link time. */
2251 if (output_bfd != NULL)
2252 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2253 input_section, output_bfd, error_message);
2254
2255 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2256 if (TOCstart == 0)
2257 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2258
2259 /* Subtract the TOC base address. */
2260 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2261
2262 /* Adjust the addend for sign extension of the low 16 bits. */
2263 reloc_entry->addend += 0x8000;
2264 return bfd_reloc_continue;
2265 }
2266
2267 static bfd_reloc_status_type
2268 ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data,
2269 input_section, output_bfd, error_message)
2270 bfd *abfd;
2271 arelent *reloc_entry;
2272 asymbol *symbol;
2273 PTR data;
2274 asection *input_section;
2275 bfd *output_bfd;
2276 char **error_message;
2277 {
2278 bfd_vma TOCstart;
2279 bfd_size_type octets;
2280
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2283 link time. */
2284 if (output_bfd != NULL)
2285 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2286 input_section, output_bfd, error_message);
2287
2288 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2289 if (TOCstart == 0)
2290 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2291
2292 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2293 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2294 return bfd_reloc_ok;
2295 }
2296
2297 static bfd_reloc_status_type
2298 ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data,
2299 input_section, output_bfd, error_message)
2300 bfd *abfd;
2301 arelent *reloc_entry;
2302 asymbol *symbol;
2303 PTR data;
2304 asection *input_section;
2305 bfd *output_bfd;
2306 char **error_message;
2307 {
2308 /* If this is a relocatable link (output_bfd test tells us), just
2309 call the generic function. Any adjustment will be done at final
2310 link time. */
2311 if (output_bfd != NULL)
2312 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2313 input_section, output_bfd, error_message);
2314
2315 if (error_message != NULL)
2316 {
2317 static char buf[60];
2318 sprintf (buf, "generic linker can't handle %s",
2319 reloc_entry->howto->name);
2320 *error_message = buf;
2321 }
2322 return bfd_reloc_dangerous;
2323 }
2324
2325 /* Fix bad default arch selected for a 64 bit input bfd when the
2326 default is 32 bit. */
2327
2328 static bfd_boolean
2329 ppc64_elf_object_p (abfd)
2330 bfd *abfd;
2331 {
2332 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2333 {
2334 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2335
2336 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2337 {
2338 /* Relies on arch after 32 bit default being 64 bit default. */
2339 abfd->arch_info = abfd->arch_info->next;
2340 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2341 }
2342 }
2343 return TRUE;
2344 }
2345
2346 /* Merge backend specific data from an object file to the output
2347 object file when linking. */
2348
2349 static bfd_boolean
2350 ppc64_elf_merge_private_bfd_data (ibfd, obfd)
2351 bfd *ibfd;
2352 bfd *obfd;
2353 {
2354 /* Check if we have the same endianess. */
2355 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2356 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2357 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2358 {
2359 const char *msg;
2360
2361 if (bfd_big_endian (ibfd))
2362 msg = _("%s: compiled for a big endian system and target is little endian");
2363 else
2364 msg = _("%s: compiled for a little endian system and target is big endian");
2365
2366 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
2367
2368 bfd_set_error (bfd_error_wrong_format);
2369 return FALSE;
2370 }
2371
2372 return TRUE;
2373 }
2374
2375 struct _ppc64_elf_section_data
2376 {
2377 struct bfd_elf_section_data elf;
2378
2379 /* An array with one entry for each opd function descriptor. */
2380 union
2381 {
2382 /* Points to the function code section for local opd entries. */
2383 asection **func_sec;
2384 /* After editing .opd, adjust references to opd local syms. */
2385 long *adjust;
2386 } opd;
2387
2388 /* An array for toc sections, indexed by offset/8.
2389 Specifies the relocation symbol index used at a given toc offset. */
2390 unsigned *t_symndx;
2391 };
2392
2393 #define ppc64_elf_section_data(sec) \
2394 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2395
2396 static bfd_boolean
2397 ppc64_elf_new_section_hook (abfd, sec)
2398 bfd *abfd;
2399 asection *sec;
2400 {
2401 struct _ppc64_elf_section_data *sdata;
2402 bfd_size_type amt = sizeof (*sdata);
2403
2404 sdata = (struct _ppc64_elf_section_data *) bfd_zalloc (abfd, amt);
2405 if (sdata == NULL)
2406 return FALSE;
2407 sec->used_by_bfd = (PTR) sdata;
2408
2409 return _bfd_elf_new_section_hook (abfd, sec);
2410 }
2411 \f
2412 /* The following functions are specific to the ELF linker, while
2413 functions above are used generally. Those named ppc64_elf_* are
2414 called by the main ELF linker code. They appear in this file more
2415 or less in the order in which they are called. eg.
2416 ppc64_elf_check_relocs is called early in the link process,
2417 ppc64_elf_finish_dynamic_sections is one of the last functions
2418 called.
2419
2420 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2421 functions have both a function code symbol and a function descriptor
2422 symbol. A call to foo in a relocatable object file looks like:
2423
2424 . .text
2425 . x:
2426 . bl .foo
2427 . nop
2428
2429 The function definition in another object file might be:
2430
2431 . .section .opd
2432 . foo: .quad .foo
2433 . .quad .TOC.@tocbase
2434 . .quad 0
2435 .
2436 . .text
2437 . .foo: blr
2438
2439 When the linker resolves the call during a static link, the branch
2440 unsurprisingly just goes to .foo and the .opd information is unused.
2441 If the function definition is in a shared library, things are a little
2442 different: The call goes via a plt call stub, the opd information gets
2443 copied to the plt, and the linker patches the nop.
2444
2445 . x:
2446 . bl .foo_stub
2447 . ld 2,40(1)
2448 .
2449 .
2450 . .foo_stub:
2451 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2452 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2453 . std 2,40(1) # this is the general idea
2454 . ld 11,0(12)
2455 . ld 2,8(12)
2456 . mtctr 11
2457 . ld 11,16(12)
2458 . bctr
2459 .
2460 . .section .plt
2461 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2462
2463 The "reloc ()" notation is supposed to indicate that the linker emits
2464 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2465 copying.
2466
2467 What are the difficulties here? Well, firstly, the relocations
2468 examined by the linker in check_relocs are against the function code
2469 sym .foo, while the dynamic relocation in the plt is emitted against
2470 the function descriptor symbol, foo. Somewhere along the line, we need
2471 to carefully copy dynamic link information from one symbol to the other.
2472 Secondly, the generic part of the elf linker will make .foo a dynamic
2473 symbol as is normal for most other backends. We need foo dynamic
2474 instead, at least for an application final link. However, when
2475 creating a shared library containing foo, we need to have both symbols
2476 dynamic so that references to .foo are satisfied during the early
2477 stages of linking. Otherwise the linker might decide to pull in a
2478 definition from some other object, eg. a static library. */
2479
2480 /* The linker needs to keep track of the number of relocs that it
2481 decides to copy as dynamic relocs in check_relocs for each symbol.
2482 This is so that it can later discard them if they are found to be
2483 unnecessary. We store the information in a field extending the
2484 regular ELF linker hash table. */
2485
2486 struct ppc_dyn_relocs
2487 {
2488 struct ppc_dyn_relocs *next;
2489
2490 /* The input section of the reloc. */
2491 asection *sec;
2492
2493 /* Total number of relocs copied for the input section. */
2494 bfd_size_type count;
2495
2496 /* Number of pc-relative relocs copied for the input section. */
2497 bfd_size_type pc_count;
2498 };
2499
2500 /* Track GOT entries needed for a given symbol. We might need more
2501 than one got entry per symbol. */
2502 struct got_entry
2503 {
2504 struct got_entry *next;
2505
2506 /* The symbol addend that we'll be placing in the GOT. */
2507 bfd_vma addend;
2508
2509 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2510 union
2511 {
2512 bfd_signed_vma refcount;
2513 bfd_vma offset;
2514 } got;
2515
2516 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2517 TLS_TPREL or TLS_DTPREL for tls entries. */
2518 char tls_type;
2519 };
2520
2521 /* The same for PLT. */
2522 struct plt_entry
2523 {
2524 struct plt_entry *next;
2525
2526 bfd_vma addend;
2527
2528 union
2529 {
2530 bfd_signed_vma refcount;
2531 bfd_vma offset;
2532 } plt;
2533 };
2534
2535 /* Of those relocs that might be copied as dynamic relocs, this macro
2536 selects those that must be copied when linking a shared library,
2537 even when the symbol is local. */
2538
2539 #define MUST_BE_DYN_RELOC(RTYPE) \
2540 ((RTYPE) != R_PPC64_REL32 \
2541 && (RTYPE) != R_PPC64_REL64 \
2542 && (RTYPE) != R_PPC64_REL30)
2543
2544 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2545 copying dynamic variables from a shared lib into an app's dynbss
2546 section, and instead use a dynamic relocation to point into the
2547 shared lib. */
2548 #define ELIMINATE_COPY_RELOCS 1
2549
2550 /* Section name for stubs is the associated section name plus this
2551 string. */
2552 #define STUB_SUFFIX ".stub"
2553
2554 /* Linker stubs.
2555 ppc_stub_long_branch:
2556 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2557 destination, but a 24 bit branch in a stub section will reach.
2558 . b dest
2559
2560 ppc_stub_plt_branch:
2561 Similar to the above, but a 24 bit branch in the stub section won't
2562 reach its destination.
2563 . addis %r12,%r2,xxx@toc@ha
2564 . ld %r11,xxx@toc@l(%r12)
2565 . mtctr %r11
2566 . bctr
2567
2568 ppc_stub_plt_call:
2569 Used to call a function in a shared library.
2570 . addis %r12,%r2,xxx@toc@ha
2571 . std %r2,40(%r1)
2572 . ld %r11,xxx+0@toc@l(%r12)
2573 . ld %r2,xxx+8@toc@l(%r12)
2574 . mtctr %r11
2575 . ld %r11,xxx+16@toc@l(%r12)
2576 . bctr
2577 */
2578
2579 enum ppc_stub_type {
2580 ppc_stub_none,
2581 ppc_stub_long_branch,
2582 ppc_stub_plt_branch,
2583 ppc_stub_plt_call
2584 };
2585
2586 struct ppc_stub_hash_entry {
2587
2588 /* Base hash table entry structure. */
2589 struct bfd_hash_entry root;
2590
2591 /* The stub section. */
2592 asection *stub_sec;
2593
2594 /* Offset within stub_sec of the beginning of this stub. */
2595 bfd_vma stub_offset;
2596
2597 /* Given the symbol's value and its section we can determine its final
2598 value when building the stubs (so the stub knows where to jump. */
2599 bfd_vma target_value;
2600 asection *target_section;
2601
2602 enum ppc_stub_type stub_type;
2603
2604 /* The symbol table entry, if any, that this was derived from. */
2605 struct ppc_link_hash_entry *h;
2606
2607 /* And the reloc addend that this was derived from. */
2608 bfd_vma addend;
2609
2610 /* Where this stub is being called from, or, in the case of combined
2611 stub sections, the first input section in the group. */
2612 asection *id_sec;
2613 };
2614
2615 struct ppc_branch_hash_entry {
2616
2617 /* Base hash table entry structure. */
2618 struct bfd_hash_entry root;
2619
2620 /* Offset within .branch_lt. */
2621 unsigned int offset;
2622
2623 /* Generation marker. */
2624 unsigned int iter;
2625 };
2626
2627 struct ppc_link_hash_entry
2628 {
2629 struct elf_link_hash_entry elf;
2630
2631 /* A pointer to the most recently used stub hash entry against this
2632 symbol. */
2633 struct ppc_stub_hash_entry *stub_cache;
2634
2635 /* Track dynamic relocs copied for this symbol. */
2636 struct ppc_dyn_relocs *dyn_relocs;
2637
2638 /* Link between function code and descriptor symbols. */
2639 struct elf_link_hash_entry *oh;
2640
2641 /* Flag function code and descriptor symbols. */
2642 unsigned int is_func:1;
2643 unsigned int is_func_descriptor:1;
2644 unsigned int is_entry:1;
2645
2646 /* Contexts in which symbol is used in the GOT (or TOC).
2647 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2648 corresponding relocs are encountered during check_relocs.
2649 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2650 indicate the corresponding GOT entry type is not needed.
2651 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2652 a TPREL one. We use a separate flag rather than setting TPREL
2653 just for convenience in distinguishing the two cases. */
2654 #define TLS_GD 1 /* GD reloc. */
2655 #define TLS_LD 2 /* LD reloc. */
2656 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2657 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2658 #define TLS_TLS 16 /* Any TLS reloc. */
2659 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2660 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2661 char tls_mask;
2662 };
2663
2664 /* ppc64 ELF linker hash table. */
2665
2666 struct ppc_link_hash_table
2667 {
2668 struct elf_link_hash_table elf;
2669
2670 /* The stub hash table. */
2671 struct bfd_hash_table stub_hash_table;
2672
2673 /* Another hash table for plt_branch stubs. */
2674 struct bfd_hash_table branch_hash_table;
2675
2676 /* Linker stub bfd. */
2677 bfd *stub_bfd;
2678
2679 /* Linker call-backs. */
2680 asection * (*add_stub_section) PARAMS ((const char *, asection *));
2681 void (*layout_sections_again) PARAMS ((void));
2682
2683 /* Array to keep track of which stub sections have been created, and
2684 information on stub grouping. */
2685 struct map_stub {
2686 /* This is the section to which stubs in the group will be attached. */
2687 asection *link_sec;
2688 /* The stub section. */
2689 asection *stub_sec;
2690 } *stub_group;
2691
2692 /* Assorted information used by ppc64_elf_size_stubs. */
2693 int top_index;
2694 asection **input_list;
2695
2696 /* Short-cuts to get to dynamic linker sections. */
2697 asection *sgot;
2698 asection *srelgot;
2699 asection *splt;
2700 asection *srelplt;
2701 asection *sdynbss;
2702 asection *srelbss;
2703 asection *sglink;
2704 asection *sfpr;
2705 asection *sbrlt;
2706 asection *srelbrlt;
2707
2708 /* Short-cut to first output tls section. */
2709 asection *tls_sec;
2710
2711 /* Shortcut to .__tls_get_addr. */
2712 struct elf_link_hash_entry *tls_get_addr;
2713
2714 /* TLS local dynamic got entry handling. */
2715 union {
2716 bfd_signed_vma refcount;
2717 bfd_vma offset;
2718 } tlsld_got;
2719
2720 /* Set on error. */
2721 unsigned int stub_error;
2722
2723 /* Flag set when small branches are detected. Used to
2724 select suitable defaults for the stub group size. */
2725 unsigned int has_14bit_branch;
2726
2727 /* Set if we detect a reference undefined weak symbol. */
2728 unsigned int have_undefweak;
2729
2730 /* Incremented every time we size stubs. */
2731 unsigned int stub_iteration;
2732
2733 /* Small local sym to section mapping cache. */
2734 struct sym_sec_cache sym_sec;
2735 };
2736
2737 static struct bfd_hash_entry *stub_hash_newfunc
2738 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2739 static struct bfd_hash_entry *branch_hash_newfunc
2740 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2741 static struct bfd_hash_entry *link_hash_newfunc
2742 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2743 static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
2744 PARAMS ((bfd *));
2745 static void ppc64_elf_link_hash_table_free
2746 PARAMS ((struct bfd_link_hash_table *));
2747 static char *ppc_stub_name
2748 PARAMS ((const asection *, const asection *,
2749 const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
2750 static struct ppc_stub_hash_entry *ppc_get_stub_entry
2751 PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
2752 const Elf_Internal_Rela *, struct ppc_link_hash_table *));
2753 static struct ppc_stub_hash_entry *ppc_add_stub
2754 PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
2755 static bfd_boolean create_linkage_sections
2756 PARAMS ((bfd *, struct bfd_link_info *));
2757 static bfd_boolean create_got_section
2758 PARAMS ((bfd *, struct bfd_link_info *));
2759 static bfd_boolean ppc64_elf_create_dynamic_sections
2760 PARAMS ((bfd *, struct bfd_link_info *));
2761 static void ppc64_elf_copy_indirect_symbol
2762 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
2763 struct elf_link_hash_entry *));
2764 static bfd_boolean update_local_sym_info
2765 PARAMS ((bfd *, Elf_Internal_Shdr *, unsigned long, bfd_vma, int));
2766 static bfd_boolean update_plt_info
2767 PARAMS ((bfd *, struct ppc_link_hash_entry *, bfd_vma));
2768 static bfd_boolean ppc64_elf_check_relocs
2769 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2770 const Elf_Internal_Rela *));
2771 static asection * ppc64_elf_gc_mark_hook
2772 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
2773 struct elf_link_hash_entry *, Elf_Internal_Sym *));
2774 static bfd_boolean ppc64_elf_gc_sweep_hook
2775 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2776 const Elf_Internal_Rela *));
2777 static bfd_boolean func_desc_adjust
2778 PARAMS ((struct elf_link_hash_entry *, PTR));
2779 static bfd_boolean ppc64_elf_func_desc_adjust
2780 PARAMS ((bfd *, struct bfd_link_info *));
2781 static bfd_boolean ppc64_elf_adjust_dynamic_symbol
2782 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
2783 static void ppc64_elf_hide_symbol
2784 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
2785 static bfd_boolean get_sym_h
2786 PARAMS ((struct elf_link_hash_entry **, Elf_Internal_Sym **, asection **,
2787 char **, Elf_Internal_Sym **, unsigned long, bfd *));
2788 static int get_tls_mask
2789 PARAMS ((char **, Elf_Internal_Sym **, const Elf_Internal_Rela *, bfd *));
2790 static bfd_boolean allocate_dynrelocs
2791 PARAMS ((struct elf_link_hash_entry *, PTR));
2792 static bfd_boolean readonly_dynrelocs
2793 PARAMS ((struct elf_link_hash_entry *, PTR));
2794 static enum elf_reloc_type_class ppc64_elf_reloc_type_class
2795 PARAMS ((const Elf_Internal_Rela *));
2796 static bfd_boolean ppc64_elf_size_dynamic_sections
2797 PARAMS ((bfd *, struct bfd_link_info *));
2798 static enum ppc_stub_type ppc_type_of_stub
2799 PARAMS ((asection *, const Elf_Internal_Rela *,
2800 struct ppc_link_hash_entry **, bfd_vma));
2801 static bfd_byte *build_plt_stub
2802 PARAMS ((bfd *, bfd_byte *, int, int));
2803 static bfd_boolean ppc_build_one_stub
2804 PARAMS ((struct bfd_hash_entry *, PTR));
2805 static bfd_boolean ppc_size_one_stub
2806 PARAMS ((struct bfd_hash_entry *, PTR));
2807 static void group_sections
2808 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, bfd_boolean));
2809 static bfd_boolean ppc64_elf_relocate_section
2810 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
2811 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
2812 asection **));
2813 static bfd_boolean ppc64_elf_finish_dynamic_symbol
2814 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2815 Elf_Internal_Sym *));
2816 static bfd_boolean ppc64_elf_finish_dynamic_sections
2817 PARAMS ((bfd *, struct bfd_link_info *));
2818
2819 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2820
2821 #define ppc_hash_table(p) \
2822 ((struct ppc_link_hash_table *) ((p)->hash))
2823
2824 #define ppc_stub_hash_lookup(table, string, create, copy) \
2825 ((struct ppc_stub_hash_entry *) \
2826 bfd_hash_lookup ((table), (string), (create), (copy)))
2827
2828 #define ppc_branch_hash_lookup(table, string, create, copy) \
2829 ((struct ppc_branch_hash_entry *) \
2830 bfd_hash_lookup ((table), (string), (create), (copy)))
2831
2832 /* Create an entry in the stub hash table. */
2833
2834 static struct bfd_hash_entry *
2835 stub_hash_newfunc (entry, table, string)
2836 struct bfd_hash_entry *entry;
2837 struct bfd_hash_table *table;
2838 const char *string;
2839 {
2840 /* Allocate the structure if it has not already been allocated by a
2841 subclass. */
2842 if (entry == NULL)
2843 {
2844 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2845 if (entry == NULL)
2846 return entry;
2847 }
2848
2849 /* Call the allocation method of the superclass. */
2850 entry = bfd_hash_newfunc (entry, table, string);
2851 if (entry != NULL)
2852 {
2853 struct ppc_stub_hash_entry *eh;
2854
2855 /* Initialize the local fields. */
2856 eh = (struct ppc_stub_hash_entry *) entry;
2857 eh->stub_sec = NULL;
2858 eh->stub_offset = 0;
2859 eh->target_value = 0;
2860 eh->target_section = NULL;
2861 eh->stub_type = ppc_stub_none;
2862 eh->h = NULL;
2863 eh->id_sec = NULL;
2864 }
2865
2866 return entry;
2867 }
2868
2869 /* Create an entry in the branch hash table. */
2870
2871 static struct bfd_hash_entry *
2872 branch_hash_newfunc (entry, table, string)
2873 struct bfd_hash_entry *entry;
2874 struct bfd_hash_table *table;
2875 const char *string;
2876 {
2877 /* Allocate the structure if it has not already been allocated by a
2878 subclass. */
2879 if (entry == NULL)
2880 {
2881 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2882 if (entry == NULL)
2883 return entry;
2884 }
2885
2886 /* Call the allocation method of the superclass. */
2887 entry = bfd_hash_newfunc (entry, table, string);
2888 if (entry != NULL)
2889 {
2890 struct ppc_branch_hash_entry *eh;
2891
2892 /* Initialize the local fields. */
2893 eh = (struct ppc_branch_hash_entry *) entry;
2894 eh->offset = 0;
2895 eh->iter = 0;
2896 }
2897
2898 return entry;
2899 }
2900
2901 /* Create an entry in a ppc64 ELF linker hash table. */
2902
2903 static struct bfd_hash_entry *
2904 link_hash_newfunc (entry, table, string)
2905 struct bfd_hash_entry *entry;
2906 struct bfd_hash_table *table;
2907 const char *string;
2908 {
2909 /* Allocate the structure if it has not already been allocated by a
2910 subclass. */
2911 if (entry == NULL)
2912 {
2913 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2914 if (entry == NULL)
2915 return entry;
2916 }
2917
2918 /* Call the allocation method of the superclass. */
2919 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2920 if (entry != NULL)
2921 {
2922 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2923
2924 eh->stub_cache = NULL;
2925 eh->dyn_relocs = NULL;
2926 eh->oh = NULL;
2927 eh->is_func = 0;
2928 eh->is_func_descriptor = 0;
2929 eh->is_entry = 0;
2930 eh->tls_mask = 0;
2931 }
2932
2933 return entry;
2934 }
2935
2936 /* Create a ppc64 ELF linker hash table. */
2937
2938 static struct bfd_link_hash_table *
2939 ppc64_elf_link_hash_table_create (abfd)
2940 bfd *abfd;
2941 {
2942 struct ppc_link_hash_table *htab;
2943 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2944
2945 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
2946 if (htab == NULL)
2947 return NULL;
2948
2949 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2950 {
2951 free (htab);
2952 return NULL;
2953 }
2954
2955 /* Init the stub hash table too. */
2956 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2957 return NULL;
2958
2959 /* And the branch hash table. */
2960 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2961 return NULL;
2962
2963 htab->stub_bfd = NULL;
2964 htab->add_stub_section = NULL;
2965 htab->layout_sections_again = NULL;
2966 htab->stub_group = NULL;
2967 htab->sgot = NULL;
2968 htab->srelgot = NULL;
2969 htab->splt = NULL;
2970 htab->srelplt = NULL;
2971 htab->sdynbss = NULL;
2972 htab->srelbss = NULL;
2973 htab->sglink = NULL;
2974 htab->sfpr = NULL;
2975 htab->sbrlt = NULL;
2976 htab->srelbrlt = NULL;
2977 htab->tls_sec = NULL;
2978 htab->tls_get_addr = NULL;
2979 htab->tlsld_got.refcount = 0;
2980 htab->stub_error = 0;
2981 htab->has_14bit_branch = 0;
2982 htab->have_undefweak = 0;
2983 htab->stub_iteration = 0;
2984 htab->sym_sec.abfd = NULL;
2985 /* Initializing two fields of the union is just cosmetic. We really
2986 only care about glist, but when compiled on a 32-bit host the
2987 bfd_vma fields are larger. Setting the bfd_vma to zero makes
2988 debugger inspection of these fields look nicer. */
2989 htab->elf.init_refcount.refcount = 0;
2990 htab->elf.init_refcount.glist = NULL;
2991 htab->elf.init_offset.offset = 0;
2992 htab->elf.init_offset.glist = NULL;
2993
2994 return &htab->elf.root;
2995 }
2996
2997 /* Free the derived linker hash table. */
2998
2999 static void
3000 ppc64_elf_link_hash_table_free (hash)
3001 struct bfd_link_hash_table *hash;
3002 {
3003 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3004
3005 bfd_hash_table_free (&ret->stub_hash_table);
3006 bfd_hash_table_free (&ret->branch_hash_table);
3007 _bfd_generic_link_hash_table_free (hash);
3008 }
3009
3010 /* Build a name for an entry in the stub hash table. */
3011
3012 static char *
3013 ppc_stub_name (input_section, sym_sec, h, rel)
3014 const asection *input_section;
3015 const asection *sym_sec;
3016 const struct ppc_link_hash_entry *h;
3017 const Elf_Internal_Rela *rel;
3018 {
3019 char *stub_name;
3020 bfd_size_type len;
3021
3022 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3023 offsets from a sym as a branch target? In fact, we could
3024 probably assume the addend is always zero. */
3025 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3026
3027 if (h)
3028 {
3029 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3030 stub_name = bfd_malloc (len);
3031 if (stub_name != NULL)
3032 {
3033 sprintf (stub_name, "%08x_%s+%x",
3034 input_section->id & 0xffffffff,
3035 h->elf.root.root.string,
3036 (int) rel->r_addend & 0xffffffff);
3037 }
3038 }
3039 else
3040 {
3041 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3042 stub_name = bfd_malloc (len);
3043 if (stub_name != NULL)
3044 {
3045 sprintf (stub_name, "%08x_%x:%x+%x",
3046 input_section->id & 0xffffffff,
3047 sym_sec->id & 0xffffffff,
3048 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3049 (int) rel->r_addend & 0xffffffff);
3050 }
3051 }
3052 return stub_name;
3053 }
3054
3055 /* Look up an entry in the stub hash. Stub entries are cached because
3056 creating the stub name takes a bit of time. */
3057
3058 static struct ppc_stub_hash_entry *
3059 ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
3060 const asection *input_section;
3061 const asection *sym_sec;
3062 struct elf_link_hash_entry *hash;
3063 const Elf_Internal_Rela *rel;
3064 struct ppc_link_hash_table *htab;
3065 {
3066 struct ppc_stub_hash_entry *stub_entry;
3067 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3068 const asection *id_sec;
3069
3070 /* If this input section is part of a group of sections sharing one
3071 stub section, then use the id of the first section in the group.
3072 Stub names need to include a section id, as there may well be
3073 more than one stub used to reach say, printf, and we need to
3074 distinguish between them. */
3075 id_sec = htab->stub_group[input_section->id].link_sec;
3076
3077 if (h != NULL && h->stub_cache != NULL
3078 && h->stub_cache->h == h
3079 && h->stub_cache->id_sec == id_sec)
3080 {
3081 stub_entry = h->stub_cache;
3082 }
3083 else
3084 {
3085 char *stub_name;
3086
3087 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3088 if (stub_name == NULL)
3089 return NULL;
3090
3091 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3092 stub_name, FALSE, FALSE);
3093 if (h != NULL)
3094 h->stub_cache = stub_entry;
3095
3096 free (stub_name);
3097 }
3098
3099 return stub_entry;
3100 }
3101
3102 /* Add a new stub entry to the stub hash. Not all fields of the new
3103 stub entry are initialised. */
3104
3105 static struct ppc_stub_hash_entry *
3106 ppc_add_stub (stub_name, section, htab)
3107 const char *stub_name;
3108 asection *section;
3109 struct ppc_link_hash_table *htab;
3110 {
3111 asection *link_sec;
3112 asection *stub_sec;
3113 struct ppc_stub_hash_entry *stub_entry;
3114
3115 link_sec = htab->stub_group[section->id].link_sec;
3116 stub_sec = htab->stub_group[section->id].stub_sec;
3117 if (stub_sec == NULL)
3118 {
3119 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3120 if (stub_sec == NULL)
3121 {
3122 size_t namelen;
3123 bfd_size_type len;
3124 char *s_name;
3125
3126 namelen = strlen (link_sec->name);
3127 len = namelen + sizeof (STUB_SUFFIX);
3128 s_name = bfd_alloc (htab->stub_bfd, len);
3129 if (s_name == NULL)
3130 return NULL;
3131
3132 memcpy (s_name, link_sec->name, namelen);
3133 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3134 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3135 if (stub_sec == NULL)
3136 return NULL;
3137 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3138 }
3139 htab->stub_group[section->id].stub_sec = stub_sec;
3140 }
3141
3142 /* Enter this entry into the linker stub hash table. */
3143 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3144 TRUE, FALSE);
3145 if (stub_entry == NULL)
3146 {
3147 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3148 bfd_archive_filename (section->owner),
3149 stub_name);
3150 return NULL;
3151 }
3152
3153 stub_entry->stub_sec = stub_sec;
3154 stub_entry->stub_offset = 0;
3155 stub_entry->id_sec = link_sec;
3156 return stub_entry;
3157 }
3158
3159 /* Create sections for linker generated code. */
3160
3161 static bfd_boolean
3162 create_linkage_sections (dynobj, info)
3163 bfd *dynobj;
3164 struct bfd_link_info *info;
3165 {
3166 struct ppc_link_hash_table *htab;
3167 flagword flags;
3168
3169 htab = ppc_hash_table (info);
3170
3171 /* Create .sfpr for code to save and restore fp regs. */
3172 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3173 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3174 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3175 if (htab->sfpr == NULL
3176 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3177 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3178 return FALSE;
3179
3180 /* Create .glink for lazy dynamic linking support. */
3181 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
3182 if (htab->sglink == NULL
3183 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
3184 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
3185 return FALSE;
3186
3187 /* Create .branch_lt for plt_branch stubs. */
3188 flags = (SEC_ALLOC | SEC_LOAD
3189 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3190 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3191 if (htab->sbrlt == NULL
3192 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
3193 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
3194 return FALSE;
3195
3196 if (info->shared)
3197 {
3198 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3199 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3200 htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3201 if (!htab->srelbrlt
3202 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
3203 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
3204 return FALSE;
3205 }
3206 return TRUE;
3207 }
3208
3209 /* Create .got and .rela.got sections in DYNOBJ, and set up
3210 shortcuts to them in our hash table. */
3211
3212 static bfd_boolean
3213 create_got_section (dynobj, info)
3214 bfd *dynobj;
3215 struct bfd_link_info *info;
3216 {
3217 struct ppc_link_hash_table *htab;
3218
3219 if (! _bfd_elf_create_got_section (dynobj, info))
3220 return FALSE;
3221
3222 htab = ppc_hash_table (info);
3223 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
3224 if (!htab->sgot)
3225 abort ();
3226
3227 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
3228 if (!htab->srelgot
3229 || ! bfd_set_section_flags (dynobj, htab->srelgot,
3230 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3231 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3232 | SEC_READONLY))
3233 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
3234 return FALSE;
3235 return TRUE;
3236 }
3237
3238 /* Create the dynamic sections, and set up shortcuts. */
3239
3240 static bfd_boolean
3241 ppc64_elf_create_dynamic_sections (dynobj, info)
3242 bfd *dynobj;
3243 struct bfd_link_info *info;
3244 {
3245 struct ppc_link_hash_table *htab;
3246
3247 htab = ppc_hash_table (info);
3248 if (!htab->sgot && !create_got_section (dynobj, info))
3249 return FALSE;
3250
3251 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3252 return FALSE;
3253
3254 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
3255 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3256 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3257 if (!info->shared)
3258 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3259
3260 if (!htab->splt || !htab->srelplt || !htab->sdynbss
3261 || (!info->shared && !htab->srelbss))
3262 abort ();
3263
3264 return TRUE;
3265 }
3266
3267 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3268
3269 static void
3270 ppc64_elf_copy_indirect_symbol (bed, dir, ind)
3271 struct elf_backend_data *bed ATTRIBUTE_UNUSED;
3272 struct elf_link_hash_entry *dir, *ind;
3273 {
3274 struct ppc_link_hash_entry *edir, *eind;
3275 flagword mask;
3276
3277 edir = (struct ppc_link_hash_entry *) dir;
3278 eind = (struct ppc_link_hash_entry *) ind;
3279
3280 /* Copy over any dynamic relocs we may have on the indirect sym. */
3281 if (eind->dyn_relocs != NULL)
3282 {
3283 if (edir->dyn_relocs != NULL)
3284 {
3285 struct ppc_dyn_relocs **pp;
3286 struct ppc_dyn_relocs *p;
3287
3288 if (eind->elf.root.type == bfd_link_hash_indirect)
3289 abort ();
3290
3291 /* Add reloc counts against the weak sym to the strong sym
3292 list. Merge any entries against the same section. */
3293 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3294 {
3295 struct ppc_dyn_relocs *q;
3296
3297 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3298 if (q->sec == p->sec)
3299 {
3300 q->pc_count += p->pc_count;
3301 q->count += p->count;
3302 *pp = p->next;
3303 break;
3304 }
3305 if (q == NULL)
3306 pp = &p->next;
3307 }
3308 *pp = edir->dyn_relocs;
3309 }
3310
3311 edir->dyn_relocs = eind->dyn_relocs;
3312 eind->dyn_relocs = NULL;
3313 }
3314
3315 edir->is_func |= eind->is_func;
3316 edir->is_func_descriptor |= eind->is_func_descriptor;
3317 edir->is_entry |= eind->is_entry;
3318 edir->tls_mask |= eind->tls_mask;
3319
3320 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3321 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF);
3322 /* If called to transfer flags for a weakdef during processing
3323 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3324 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3325 if (ELIMINATE_COPY_RELOCS
3326 && eind->elf.root.type != bfd_link_hash_indirect
3327 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3328 mask &= ~ELF_LINK_NON_GOT_REF;
3329
3330 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3331
3332 /* If we were called to copy over info for a weak sym, that's all. */
3333 if (eind->elf.root.type != bfd_link_hash_indirect)
3334 return;
3335
3336 /* Copy over got entries that we may have already seen to the
3337 symbol which just became indirect. */
3338 if (eind->elf.got.glist != NULL)
3339 {
3340 if (edir->elf.got.glist != NULL)
3341 {
3342 struct got_entry **entp;
3343 struct got_entry *ent;
3344
3345 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3346 {
3347 struct got_entry *dent;
3348
3349 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3350 if (dent->addend == ent->addend
3351 && dent->tls_type == ent->tls_type)
3352 {
3353 dent->got.refcount += ent->got.refcount;
3354 *entp = ent->next;
3355 break;
3356 }
3357 if (dent == NULL)
3358 entp = &ent->next;
3359 }
3360 *entp = edir->elf.got.glist;
3361 }
3362
3363 edir->elf.got.glist = eind->elf.got.glist;
3364 eind->elf.got.glist = NULL;
3365 }
3366
3367 /* And plt entries. */
3368 if (eind->elf.plt.plist != NULL)
3369 {
3370 if (edir->elf.plt.plist != NULL)
3371 {
3372 struct plt_entry **entp;
3373 struct plt_entry *ent;
3374
3375 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3376 {
3377 struct plt_entry *dent;
3378
3379 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3380 if (dent->addend == ent->addend)
3381 {
3382 dent->plt.refcount += ent->plt.refcount;
3383 *entp = ent->next;
3384 break;
3385 }
3386 if (dent == NULL)
3387 entp = &ent->next;
3388 }
3389 *entp = edir->elf.plt.plist;
3390 }
3391
3392 edir->elf.plt.plist = eind->elf.plt.plist;
3393 eind->elf.plt.plist = NULL;
3394 }
3395
3396 if (edir->elf.dynindx == -1)
3397 {
3398 edir->elf.dynindx = eind->elf.dynindx;
3399 edir->elf.dynstr_index = eind->elf.dynstr_index;
3400 eind->elf.dynindx = -1;
3401 eind->elf.dynstr_index = 0;
3402 }
3403 else
3404 BFD_ASSERT (eind->elf.dynindx == -1);
3405 }
3406
3407 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3408 symbols undefined on the command-line. */
3409
3410 bfd_boolean
3411 ppc64_elf_mark_entry_syms (info)
3412 struct bfd_link_info *info;
3413 {
3414 struct ppc_link_hash_table *htab;
3415 struct bfd_sym_chain *sym;
3416
3417 htab = ppc_hash_table (info);
3418 for (sym = info->gc_sym_list; sym; sym = sym->next)
3419 {
3420 struct elf_link_hash_entry *h;
3421
3422 h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
3423 if (h != NULL)
3424 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
3425 }
3426 return TRUE;
3427 }
3428
3429 static bfd_boolean
3430 update_local_sym_info (abfd, symtab_hdr, r_symndx, r_addend, tls_type)
3431 bfd *abfd;
3432 Elf_Internal_Shdr *symtab_hdr;
3433 unsigned long r_symndx;
3434 bfd_vma r_addend;
3435 int tls_type;
3436 {
3437 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3438 char *local_got_tls_masks;
3439
3440 if (local_got_ents == NULL)
3441 {
3442 bfd_size_type size = symtab_hdr->sh_info;
3443
3444 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3445 local_got_ents = (struct got_entry **) bfd_zalloc (abfd, size);
3446 if (local_got_ents == NULL)
3447 return FALSE;
3448 elf_local_got_ents (abfd) = local_got_ents;
3449 }
3450
3451 if ((tls_type & TLS_EXPLICIT) == 0)
3452 {
3453 struct got_entry *ent;
3454
3455 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3456 if (ent->addend == r_addend && ent->tls_type == tls_type)
3457 break;
3458 if (ent == NULL)
3459 {
3460 bfd_size_type amt = sizeof (*ent);
3461 ent = (struct got_entry *) bfd_alloc (abfd, amt);
3462 if (ent == NULL)
3463 return FALSE;
3464 ent->next = local_got_ents[r_symndx];
3465 ent->addend = r_addend;
3466 ent->tls_type = tls_type;
3467 ent->got.refcount = 0;
3468 local_got_ents[r_symndx] = ent;
3469 }
3470 ent->got.refcount += 1;
3471 }
3472
3473 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3474 local_got_tls_masks[r_symndx] |= tls_type;
3475 return TRUE;
3476 }
3477
3478 static bfd_boolean
3479 update_plt_info (abfd, eh, addend)
3480 bfd *abfd;
3481 struct ppc_link_hash_entry *eh;
3482 bfd_vma addend;
3483 {
3484 struct plt_entry *ent;
3485
3486 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3487 if (ent->addend == addend)
3488 break;
3489 if (ent == NULL)
3490 {
3491 bfd_size_type amt = sizeof (*ent);
3492 ent = (struct plt_entry *) bfd_alloc (abfd, amt);
3493 if (ent == NULL)
3494 return FALSE;
3495 ent->next = eh->elf.plt.plist;
3496 ent->addend = addend;
3497 ent->plt.refcount = 0;
3498 eh->elf.plt.plist = ent;
3499 }
3500 ent->plt.refcount += 1;
3501 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3502 eh->is_func = 1;
3503 return TRUE;
3504 }
3505
3506 /* Look through the relocs for a section during the first phase, and
3507 calculate needed space in the global offset table, procedure
3508 linkage table, and dynamic reloc sections. */
3509
3510 static bfd_boolean
3511 ppc64_elf_check_relocs (abfd, info, sec, relocs)
3512 bfd *abfd;
3513 struct bfd_link_info *info;
3514 asection *sec;
3515 const Elf_Internal_Rela *relocs;
3516 {
3517 struct ppc_link_hash_table *htab;
3518 Elf_Internal_Shdr *symtab_hdr;
3519 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3520 const Elf_Internal_Rela *rel;
3521 const Elf_Internal_Rela *rel_end;
3522 asection *sreloc;
3523 asection **opd_sym_map;
3524
3525 if (info->relocateable)
3526 return TRUE;
3527
3528 htab = ppc_hash_table (info);
3529 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3530
3531 sym_hashes = elf_sym_hashes (abfd);
3532 sym_hashes_end = (sym_hashes
3533 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3534 - symtab_hdr->sh_info);
3535
3536 sreloc = NULL;
3537 opd_sym_map = NULL;
3538 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3539 {
3540 /* Garbage collection needs some extra help with .opd sections.
3541 We don't want to necessarily keep everything referenced by
3542 relocs in .opd, as that would keep all functions. Instead,
3543 if we reference an .opd symbol (a function descriptor), we
3544 want to keep the function code symbol's section. This is
3545 easy for global symbols, but for local syms we need to keep
3546 information about the associated function section. Later, if
3547 edit_opd deletes entries, we'll use this array to adjust
3548 local syms in .opd. */
3549 union opd_info {
3550 asection *func_section;
3551 long entry_adjust;
3552 };
3553 bfd_size_type amt;
3554
3555 amt = sec->_raw_size * sizeof (union opd_info) / 24;
3556 opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
3557 if (opd_sym_map == NULL)
3558 return FALSE;
3559 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3560 }
3561
3562 if (htab->elf.dynobj == NULL)
3563 htab->elf.dynobj = abfd;
3564 if (htab->sfpr == NULL
3565 && !create_linkage_sections (htab->elf.dynobj, info))
3566 return FALSE;
3567
3568 rel_end = relocs + sec->reloc_count;
3569 for (rel = relocs; rel < rel_end; rel++)
3570 {
3571 unsigned long r_symndx;
3572 struct elf_link_hash_entry *h;
3573 enum elf_ppc64_reloc_type r_type;
3574 int tls_type = 0;
3575
3576 r_symndx = ELF64_R_SYM (rel->r_info);
3577 if (r_symndx < symtab_hdr->sh_info)
3578 h = NULL;
3579 else
3580 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3581
3582 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
3583 switch (r_type)
3584 {
3585 case R_PPC64_GOT_TLSLD16:
3586 case R_PPC64_GOT_TLSLD16_LO:
3587 case R_PPC64_GOT_TLSLD16_HI:
3588 case R_PPC64_GOT_TLSLD16_HA:
3589 htab->tlsld_got.refcount += 1;
3590 tls_type = TLS_TLS | TLS_LD;
3591 goto dogottls;
3592
3593 case R_PPC64_GOT_TLSGD16:
3594 case R_PPC64_GOT_TLSGD16_LO:
3595 case R_PPC64_GOT_TLSGD16_HI:
3596 case R_PPC64_GOT_TLSGD16_HA:
3597 tls_type = TLS_TLS | TLS_GD;
3598 goto dogottls;
3599
3600 case R_PPC64_GOT_TPREL16_DS:
3601 case R_PPC64_GOT_TPREL16_LO_DS:
3602 case R_PPC64_GOT_TPREL16_HI:
3603 case R_PPC64_GOT_TPREL16_HA:
3604 if (info->shared)
3605 info->flags |= DF_STATIC_TLS;
3606 tls_type = TLS_TLS | TLS_TPREL;
3607 goto dogottls;
3608
3609 case R_PPC64_GOT_DTPREL16_DS:
3610 case R_PPC64_GOT_DTPREL16_LO_DS:
3611 case R_PPC64_GOT_DTPREL16_HI:
3612 case R_PPC64_GOT_DTPREL16_HA:
3613 tls_type = TLS_TLS | TLS_DTPREL;
3614 dogottls:
3615 sec->has_tls_reloc = 1;
3616 /* Fall thru */
3617
3618 case R_PPC64_GOT16:
3619 case R_PPC64_GOT16_DS:
3620 case R_PPC64_GOT16_HA:
3621 case R_PPC64_GOT16_HI:
3622 case R_PPC64_GOT16_LO:
3623 case R_PPC64_GOT16_LO_DS:
3624 /* This symbol requires a global offset table entry. */
3625 if (htab->sgot == NULL
3626 && !create_got_section (htab->elf.dynobj, info))
3627 return FALSE;
3628
3629 if (h != NULL)
3630 {
3631 struct ppc_link_hash_entry *eh;
3632 struct got_entry *ent;
3633
3634 eh = (struct ppc_link_hash_entry *) h;
3635 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3636 if (ent->addend == rel->r_addend
3637 && ent->tls_type == tls_type)
3638 break;
3639 if (ent == NULL)
3640 {
3641 bfd_size_type amt = sizeof (*ent);
3642 ent = (struct got_entry *) bfd_alloc (abfd, amt);
3643 if (ent == NULL)
3644 return FALSE;
3645 ent->next = eh->elf.got.glist;
3646 ent->addend = rel->r_addend;
3647 ent->tls_type = tls_type;
3648 ent->got.refcount = 0;
3649 eh->elf.got.glist = ent;
3650 }
3651 ent->got.refcount += 1;
3652 eh->tls_mask |= tls_type;
3653 }
3654 else
3655 /* This is a global offset table entry for a local symbol. */
3656 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3657 rel->r_addend, tls_type))
3658 return FALSE;
3659 break;
3660
3661 case R_PPC64_PLT16_HA:
3662 case R_PPC64_PLT16_HI:
3663 case R_PPC64_PLT16_LO:
3664 case R_PPC64_PLT32:
3665 case R_PPC64_PLT64:
3666 /* This symbol requires a procedure linkage table entry. We
3667 actually build the entry in adjust_dynamic_symbol,
3668 because this might be a case of linking PIC code without
3669 linking in any dynamic objects, in which case we don't
3670 need to generate a procedure linkage table after all. */
3671 if (h == NULL)
3672 {
3673 /* It does not make sense to have a procedure linkage
3674 table entry for a local symbol. */
3675 bfd_set_error (bfd_error_bad_value);
3676 return FALSE;
3677 }
3678 else
3679 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3680 rel->r_addend))
3681 return FALSE;
3682 break;
3683
3684 /* The following relocations don't need to propagate the
3685 relocation if linking a shared object since they are
3686 section relative. */
3687 case R_PPC64_SECTOFF:
3688 case R_PPC64_SECTOFF_LO:
3689 case R_PPC64_SECTOFF_HI:
3690 case R_PPC64_SECTOFF_HA:
3691 case R_PPC64_SECTOFF_DS:
3692 case R_PPC64_SECTOFF_LO_DS:
3693 case R_PPC64_TOC16:
3694 case R_PPC64_TOC16_LO:
3695 case R_PPC64_TOC16_HI:
3696 case R_PPC64_TOC16_HA:
3697 case R_PPC64_TOC16_DS:
3698 case R_PPC64_TOC16_LO_DS:
3699 case R_PPC64_DTPREL16:
3700 case R_PPC64_DTPREL16_LO:
3701 case R_PPC64_DTPREL16_HI:
3702 case R_PPC64_DTPREL16_HA:
3703 case R_PPC64_DTPREL16_DS:
3704 case R_PPC64_DTPREL16_LO_DS:
3705 case R_PPC64_DTPREL16_HIGHER:
3706 case R_PPC64_DTPREL16_HIGHERA:
3707 case R_PPC64_DTPREL16_HIGHEST:
3708 case R_PPC64_DTPREL16_HIGHESTA:
3709 break;
3710
3711 /* This relocation describes the C++ object vtable hierarchy.
3712 Reconstruct it for later use during GC. */
3713 case R_PPC64_GNU_VTINHERIT:
3714 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3715 return FALSE;
3716 break;
3717
3718 /* This relocation describes which C++ vtable entries are actually
3719 used. Record for later use during GC. */
3720 case R_PPC64_GNU_VTENTRY:
3721 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3722 return FALSE;
3723 break;
3724
3725 case R_PPC64_REL14:
3726 case R_PPC64_REL14_BRTAKEN:
3727 case R_PPC64_REL14_BRNTAKEN:
3728 htab->has_14bit_branch = 1;
3729 /* Fall through. */
3730
3731 case R_PPC64_REL24:
3732 if (h != NULL
3733 && h->root.root.string[0] == '.'
3734 && h->root.root.string[1] != 0)
3735 {
3736 /* We may need a .plt entry if the function this reloc
3737 refers to is in a shared lib. */
3738 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3739 rel->r_addend))
3740 return FALSE;
3741 if (h == htab->tls_get_addr)
3742 sec->has_tls_reloc = 1;
3743 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3744 == 0)
3745 && (h->root.root.string[15] == 0
3746 || h->root.root.string[15] == '@'))
3747 {
3748 htab->tls_get_addr = h;
3749 sec->has_tls_reloc = 1;
3750 }
3751 }
3752 break;
3753
3754 case R_PPC64_TPREL64:
3755 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3756 if (info->shared)
3757 info->flags |= DF_STATIC_TLS;
3758 goto dotlstoc;
3759
3760 case R_PPC64_DTPMOD64:
3761 if (rel + 1 < rel_end
3762 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3763 && rel[1].r_offset == rel->r_offset + 8)
3764 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3765 else
3766 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3767 goto dotlstoc;
3768
3769 case R_PPC64_DTPREL64:
3770 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3771 if (rel != relocs
3772 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3773 && rel[-1].r_offset == rel->r_offset - 8)
3774 /* This is the second reloc of a dtpmod, dtprel pair.
3775 Don't mark with TLS_DTPREL. */
3776 goto dodyn;
3777
3778 dotlstoc:
3779 sec->has_tls_reloc = 1;
3780 if (h != NULL)
3781 {
3782 struct ppc_link_hash_entry *eh;
3783 eh = (struct ppc_link_hash_entry *) h;
3784 eh->tls_mask |= tls_type;
3785 }
3786 else
3787 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3788 rel->r_addend, tls_type))
3789 return FALSE;
3790
3791 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3792 {
3793 /* One extra to simplify get_tls_mask. */
3794 bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
3795 ppc64_elf_section_data (sec)->t_symndx
3796 = (unsigned *) bfd_zalloc (abfd, amt);
3797 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3798 return FALSE;
3799 }
3800 BFD_ASSERT (rel->r_offset % 8 == 0);
3801 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3802
3803 /* Mark the second slot of a GD or LD entry.
3804 -1 to indicate GD and -2 to indicate LD. */
3805 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3806 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3807 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3808 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3809 goto dodyn;
3810
3811 case R_PPC64_TPREL16:
3812 case R_PPC64_TPREL16_LO:
3813 case R_PPC64_TPREL16_HI:
3814 case R_PPC64_TPREL16_HA:
3815 case R_PPC64_TPREL16_DS:
3816 case R_PPC64_TPREL16_LO_DS:
3817 case R_PPC64_TPREL16_HIGHER:
3818 case R_PPC64_TPREL16_HIGHERA:
3819 case R_PPC64_TPREL16_HIGHEST:
3820 case R_PPC64_TPREL16_HIGHESTA:
3821 if (info->shared)
3822 {
3823 info->flags |= DF_STATIC_TLS;
3824 goto dodyn;
3825 }
3826 break;
3827
3828 case R_PPC64_ADDR64:
3829 if (opd_sym_map != NULL
3830 && h != NULL
3831 && h->root.root.string[0] == '.'
3832 && h->root.root.string[1] != 0)
3833 {
3834 struct elf_link_hash_entry *fdh;
3835
3836 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3837 FALSE, FALSE, FALSE);
3838 if (fdh != NULL)
3839 {
3840 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
3841 ((struct ppc_link_hash_entry *) fdh)->oh = h;
3842 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3843 ((struct ppc_link_hash_entry *) h)->oh = fdh;
3844 }
3845 }
3846 if (opd_sym_map != NULL
3847 && h == NULL
3848 && rel + 1 < rel_end
3849 && ((enum elf_ppc64_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
3850 == R_PPC64_TOC))
3851 {
3852 asection *s;
3853
3854 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3855 r_symndx);
3856 if (s == NULL)
3857 return FALSE;
3858 else if (s != sec)
3859 opd_sym_map[rel->r_offset / 24] = s;
3860 }
3861 /* Fall through. */
3862
3863 case R_PPC64_REL30:
3864 case R_PPC64_REL32:
3865 case R_PPC64_REL64:
3866 case R_PPC64_ADDR14:
3867 case R_PPC64_ADDR14_BRNTAKEN:
3868 case R_PPC64_ADDR14_BRTAKEN:
3869 case R_PPC64_ADDR16:
3870 case R_PPC64_ADDR16_DS:
3871 case R_PPC64_ADDR16_HA:
3872 case R_PPC64_ADDR16_HI:
3873 case R_PPC64_ADDR16_HIGHER:
3874 case R_PPC64_ADDR16_HIGHERA:
3875 case R_PPC64_ADDR16_HIGHEST:
3876 case R_PPC64_ADDR16_HIGHESTA:
3877 case R_PPC64_ADDR16_LO:
3878 case R_PPC64_ADDR16_LO_DS:
3879 case R_PPC64_ADDR24:
3880 case R_PPC64_ADDR32:
3881 case R_PPC64_UADDR16:
3882 case R_PPC64_UADDR32:
3883 case R_PPC64_UADDR64:
3884 case R_PPC64_TOC:
3885 if (h != NULL && !info->shared)
3886 /* We may need a copy reloc. */
3887 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3888
3889 /* Don't propagate .opd relocs. */
3890 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3891 break;
3892
3893 /* Don't propagate relocs that the dynamic linker won't relocate. */
3894 if ((sec->flags & SEC_ALLOC) == 0)
3895 break;
3896
3897 /* If we are creating a shared library, and this is a reloc
3898 against a global symbol, or a non PC relative reloc
3899 against a local symbol, then we need to copy the reloc
3900 into the shared library. However, if we are linking with
3901 -Bsymbolic, we do not need to copy a reloc against a
3902 global symbol which is defined in an object we are
3903 including in the link (i.e., DEF_REGULAR is set). At
3904 this point we have not seen all the input files, so it is
3905 possible that DEF_REGULAR is not set now but will be set
3906 later (it is never cleared). In case of a weak definition,
3907 DEF_REGULAR may be cleared later by a strong definition in
3908 a shared library. We account for that possibility below by
3909 storing information in the dyn_relocs field of the hash
3910 table entry. A similar situation occurs when creating
3911 shared libraries and symbol visibility changes render the
3912 symbol local.
3913
3914 If on the other hand, we are creating an executable, we
3915 may need to keep relocations for symbols satisfied by a
3916 dynamic library if we manage to avoid copy relocs for the
3917 symbol. */
3918 dodyn:
3919 if ((info->shared
3920 && (MUST_BE_DYN_RELOC (r_type)
3921 || (h != NULL
3922 && (! info->symbolic
3923 || h->root.type == bfd_link_hash_defweak
3924 || (h->elf_link_hash_flags
3925 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3926 || (ELIMINATE_COPY_RELOCS
3927 && !info->shared
3928 && h != NULL
3929 && (h->root.type == bfd_link_hash_defweak
3930 || (h->elf_link_hash_flags
3931 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3932 {
3933 struct ppc_dyn_relocs *p;
3934 struct ppc_dyn_relocs **head;
3935
3936 /* We must copy these reloc types into the output file.
3937 Create a reloc section in dynobj and make room for
3938 this reloc. */
3939 if (sreloc == NULL)
3940 {
3941 const char *name;
3942 bfd *dynobj;
3943
3944 name = (bfd_elf_string_from_elf_section
3945 (abfd,
3946 elf_elfheader (abfd)->e_shstrndx,
3947 elf_section_data (sec)->rel_hdr.sh_name));
3948 if (name == NULL)
3949 return FALSE;
3950
3951 if (strncmp (name, ".rela", 5) != 0
3952 || strcmp (bfd_get_section_name (abfd, sec),
3953 name + 5) != 0)
3954 {
3955 (*_bfd_error_handler)
3956 (_("%s: bad relocation section name `%s\'"),
3957 bfd_archive_filename (abfd), name);
3958 bfd_set_error (bfd_error_bad_value);
3959 }
3960
3961 dynobj = htab->elf.dynobj;
3962 sreloc = bfd_get_section_by_name (dynobj, name);
3963 if (sreloc == NULL)
3964 {
3965 flagword flags;
3966
3967 sreloc = bfd_make_section (dynobj, name);
3968 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3969 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3970 if ((sec->flags & SEC_ALLOC) != 0)
3971 flags |= SEC_ALLOC | SEC_LOAD;
3972 if (sreloc == NULL
3973 || ! bfd_set_section_flags (dynobj, sreloc, flags)
3974 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
3975 return FALSE;
3976 }
3977 elf_section_data (sec)->sreloc = sreloc;
3978 }
3979
3980 /* If this is a global symbol, we count the number of
3981 relocations we need for this symbol. */
3982 if (h != NULL)
3983 {
3984 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
3985 }
3986 else
3987 {
3988 /* Track dynamic relocs needed for local syms too.
3989 We really need local syms available to do this
3990 easily. Oh well. */
3991
3992 asection *s;
3993 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3994 sec, r_symndx);
3995 if (s == NULL)
3996 return FALSE;
3997
3998 head = ((struct ppc_dyn_relocs **)
3999 &elf_section_data (s)->local_dynrel);
4000 }
4001
4002 p = *head;
4003 if (p == NULL || p->sec != sec)
4004 {
4005 p = ((struct ppc_dyn_relocs *)
4006 bfd_alloc (htab->elf.dynobj,
4007 (bfd_size_type) sizeof *p));
4008 if (p == NULL)
4009 return FALSE;
4010 p->next = *head;
4011 *head = p;
4012 p->sec = sec;
4013 p->count = 0;
4014 p->pc_count = 0;
4015 }
4016
4017 p->count += 1;
4018 if (!MUST_BE_DYN_RELOC (r_type))
4019 p->pc_count += 1;
4020 }
4021 break;
4022
4023 default:
4024 break;
4025 }
4026 }
4027
4028 return TRUE;
4029 }
4030
4031 /* Return the section that should be marked against GC for a given
4032 relocation. */
4033
4034 static asection *
4035 ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
4036 asection *sec;
4037 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4038 Elf_Internal_Rela *rel;
4039 struct elf_link_hash_entry *h;
4040 Elf_Internal_Sym *sym;
4041 {
4042 asection *rsec = NULL;
4043
4044 if (h != NULL)
4045 {
4046 enum elf_ppc64_reloc_type r_type;
4047 struct ppc_link_hash_entry *fdh;
4048
4049 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4050 switch (r_type)
4051 {
4052 case R_PPC64_GNU_VTINHERIT:
4053 case R_PPC64_GNU_VTENTRY:
4054 break;
4055
4056 default:
4057 switch (h->root.type)
4058 {
4059 case bfd_link_hash_defined:
4060 case bfd_link_hash_defweak:
4061 fdh = (struct ppc_link_hash_entry *) h;
4062
4063 /* Function descriptor syms cause the associated
4064 function code sym section to be marked. */
4065 if (fdh->is_func_descriptor)
4066 rsec = fdh->oh->root.u.def.section;
4067
4068 /* Function entry syms return NULL if they are in .opd
4069 and are not ._start (or others undefined on the ld
4070 command line). Thus we avoid marking all function
4071 sections, as all functions are referenced in .opd. */
4072 else if ((fdh->oh != NULL
4073 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
4074 || ppc64_elf_section_data (sec)->opd.func_sec == NULL)
4075 rsec = h->root.u.def.section;
4076 break;
4077
4078 case bfd_link_hash_common:
4079 rsec = h->root.u.c.p->section;
4080 break;
4081
4082 default:
4083 break;
4084 }
4085 }
4086 }
4087 else
4088 {
4089 asection **opd_sym_section;
4090
4091 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4092 opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
4093 if (opd_sym_section != NULL)
4094 rsec = opd_sym_section[sym->st_value / 24];
4095 else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
4096 rsec = NULL;
4097 }
4098
4099 return rsec;
4100 }
4101
4102 /* Update the .got, .plt. and dynamic reloc reference counts for the
4103 section being removed. */
4104
4105 static bfd_boolean
4106 ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
4107 bfd *abfd;
4108 struct bfd_link_info *info;
4109 asection *sec;
4110 const Elf_Internal_Rela *relocs;
4111 {
4112 struct ppc_link_hash_table *htab;
4113 Elf_Internal_Shdr *symtab_hdr;
4114 struct elf_link_hash_entry **sym_hashes;
4115 struct got_entry **local_got_ents;
4116 const Elf_Internal_Rela *rel, *relend;
4117
4118 elf_section_data (sec)->local_dynrel = NULL;
4119
4120 htab = ppc_hash_table (info);
4121 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4122 sym_hashes = elf_sym_hashes (abfd);
4123 local_got_ents = elf_local_got_ents (abfd);
4124
4125 relend = relocs + sec->reloc_count;
4126 for (rel = relocs; rel < relend; rel++)
4127 {
4128 unsigned long r_symndx;
4129 enum elf_ppc64_reloc_type r_type;
4130 struct elf_link_hash_entry *h = NULL;
4131 char tls_type = 0;
4132
4133 r_symndx = ELF64_R_SYM (rel->r_info);
4134 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4135 if (r_symndx >= symtab_hdr->sh_info)
4136 {
4137 struct ppc_link_hash_entry *eh;
4138 struct ppc_dyn_relocs **pp;
4139 struct ppc_dyn_relocs *p;
4140
4141 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4142 eh = (struct ppc_link_hash_entry *) h;
4143
4144 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4145 if (p->sec == sec)
4146 {
4147 /* Everything must go for SEC. */
4148 *pp = p->next;
4149 break;
4150 }
4151 }
4152
4153 switch (r_type)
4154 {
4155 case R_PPC64_GOT_TLSLD16:
4156 case R_PPC64_GOT_TLSLD16_LO:
4157 case R_PPC64_GOT_TLSLD16_HI:
4158 case R_PPC64_GOT_TLSLD16_HA:
4159 htab->tlsld_got.refcount -= 1;
4160 tls_type = TLS_TLS | TLS_LD;
4161 goto dogot;
4162
4163 case R_PPC64_GOT_TLSGD16:
4164 case R_PPC64_GOT_TLSGD16_LO:
4165 case R_PPC64_GOT_TLSGD16_HI:
4166 case R_PPC64_GOT_TLSGD16_HA:
4167 tls_type = TLS_TLS | TLS_GD;
4168 goto dogot;
4169
4170 case R_PPC64_GOT_TPREL16_DS:
4171 case R_PPC64_GOT_TPREL16_LO_DS:
4172 case R_PPC64_GOT_TPREL16_HI:
4173 case R_PPC64_GOT_TPREL16_HA:
4174 tls_type = TLS_TLS | TLS_TPREL;
4175 goto dogot;
4176
4177 case R_PPC64_GOT_DTPREL16_DS:
4178 case R_PPC64_GOT_DTPREL16_LO_DS:
4179 case R_PPC64_GOT_DTPREL16_HI:
4180 case R_PPC64_GOT_DTPREL16_HA:
4181 tls_type = TLS_TLS | TLS_DTPREL;
4182 goto dogot;
4183
4184 case R_PPC64_GOT16:
4185 case R_PPC64_GOT16_DS:
4186 case R_PPC64_GOT16_HA:
4187 case R_PPC64_GOT16_HI:
4188 case R_PPC64_GOT16_LO:
4189 case R_PPC64_GOT16_LO_DS:
4190 dogot:
4191 {
4192 struct got_entry *ent;
4193
4194 if (h != NULL)
4195 ent = h->got.glist;
4196 else
4197 ent = local_got_ents[r_symndx];
4198
4199 for (; ent != NULL; ent = ent->next)
4200 if (ent->addend == rel->r_addend
4201 && ent->tls_type == tls_type)
4202 break;
4203 if (ent == NULL)
4204 abort ();
4205 if (ent->got.refcount > 0)
4206 ent->got.refcount -= 1;
4207 }
4208 break;
4209
4210 case R_PPC64_PLT16_HA:
4211 case R_PPC64_PLT16_HI:
4212 case R_PPC64_PLT16_LO:
4213 case R_PPC64_PLT32:
4214 case R_PPC64_PLT64:
4215 case R_PPC64_REL14:
4216 case R_PPC64_REL14_BRNTAKEN:
4217 case R_PPC64_REL14_BRTAKEN:
4218 case R_PPC64_REL24:
4219 if (h != NULL)
4220 {
4221 struct plt_entry *ent;
4222
4223 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4224 if (ent->addend == rel->r_addend)
4225 break;
4226 if (ent == NULL)
4227 abort ();
4228 if (ent->plt.refcount > 0)
4229 ent->plt.refcount -= 1;
4230 }
4231 break;
4232
4233 default:
4234 break;
4235 }
4236 }
4237 return TRUE;
4238 }
4239
4240 /* Called via elf_link_hash_traverse to transfer dynamic linking
4241 information on function code symbol entries to their corresponding
4242 function descriptor symbol entries. */
4243 static bfd_boolean
4244 func_desc_adjust (h, inf)
4245 struct elf_link_hash_entry *h;
4246 PTR inf;
4247 {
4248 struct bfd_link_info *info;
4249 struct ppc_link_hash_table *htab;
4250 struct plt_entry *ent;
4251
4252 if (h->root.type == bfd_link_hash_indirect)
4253 return TRUE;
4254
4255 if (h->root.type == bfd_link_hash_warning)
4256 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4257
4258 info = (struct bfd_link_info *) inf;
4259 htab = ppc_hash_table (info);
4260
4261 /* If this is a function code symbol, transfer dynamic linking
4262 information to the function descriptor symbol. */
4263 if (!((struct ppc_link_hash_entry *) h)->is_func)
4264 return TRUE;
4265
4266 if (h->root.type == bfd_link_hash_undefweak
4267 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
4268 htab->have_undefweak = TRUE;
4269
4270 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4271 if (ent->plt.refcount > 0)
4272 break;
4273 if (ent != NULL
4274 && h->root.root.string[0] == '.'
4275 && h->root.root.string[1] != '\0')
4276 {
4277 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
4278 bfd_boolean force_local;
4279
4280 /* Find the corresponding function descriptor symbol. Create it
4281 as undefined if necessary. */
4282
4283 if (fdh == NULL)
4284 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
4285 FALSE, FALSE, TRUE);
4286
4287 if (fdh == NULL
4288 && info->shared
4289 && (h->root.type == bfd_link_hash_undefined
4290 || h->root.type == bfd_link_hash_undefweak))
4291 {
4292 bfd *abfd;
4293 asymbol *newsym;
4294 struct bfd_link_hash_entry *bh;
4295
4296 abfd = h->root.u.undef.abfd;
4297 newsym = bfd_make_empty_symbol (abfd);
4298 newsym->name = h->root.root.string + 1;
4299 newsym->section = bfd_und_section_ptr;
4300 newsym->value = 0;
4301 newsym->flags = BSF_OBJECT;
4302 if (h->root.type == bfd_link_hash_undefweak)
4303 newsym->flags |= BSF_WEAK;
4304
4305 bh = &fdh->root;
4306 if ( !(_bfd_generic_link_add_one_symbol
4307 (info, abfd, newsym->name, newsym->flags,
4308 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4309 {
4310 return FALSE;
4311 }
4312 fdh = (struct elf_link_hash_entry *) bh;
4313 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4314 }
4315
4316 if (fdh != NULL
4317 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4318 && (info->shared
4319 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4320 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
4321 {
4322 if (fdh->dynindx == -1)
4323 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
4324 return FALSE;
4325 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
4326 & (ELF_LINK_HASH_REF_REGULAR
4327 | ELF_LINK_HASH_REF_DYNAMIC
4328 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4329 | ELF_LINK_NON_GOT_REF));
4330 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
4331 {
4332 fdh->plt.plist = h->plt.plist;
4333 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4334 }
4335 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
4336 ((struct ppc_link_hash_entry *) fdh)->oh = h;
4337 ((struct ppc_link_hash_entry *) h)->oh = fdh;
4338 }
4339
4340 /* Now that the info is on the function descriptor, clear the
4341 function code sym info. Any function code syms for which we
4342 don't have a definition in a regular file, we force local.
4343 This prevents a shared library from exporting syms that have
4344 been imported from another library. Function code syms that
4345 are really in the library we must leave global to prevent the
4346 linker dragging in a definition from a static library. */
4347 force_local = (info->shared
4348 && ((h->elf_link_hash_flags
4349 & ELF_LINK_HASH_DEF_REGULAR) == 0
4350 || fdh == NULL
4351 || (fdh->elf_link_hash_flags
4352 & ELF_LINK_HASH_DEF_REGULAR) == 0
4353 || (fdh->elf_link_hash_flags
4354 & ELF_LINK_FORCED_LOCAL) != 0));
4355 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4356 }
4357
4358 return TRUE;
4359 }
4360
4361 #define MIN_SAVE_FPR 14
4362 #define MAX_SAVE_FPR 31
4363
4364 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4365 this hook to a) provide some gcc support functions, and b) transfer
4366 dynamic linking information gathered so far on function code symbol
4367 entries, to their corresponding function descriptor symbol entries. */
4368 static bfd_boolean
4369 ppc64_elf_func_desc_adjust (obfd, info)
4370 bfd *obfd ATTRIBUTE_UNUSED;
4371 struct bfd_link_info *info;
4372 {
4373 struct ppc_link_hash_table *htab;
4374 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4375 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4376 unsigned int i;
4377 struct elf_link_hash_entry *h;
4378 bfd_byte *p;
4379 char sym[10];
4380
4381 htab = ppc_hash_table (info);
4382
4383 if (htab->sfpr == NULL)
4384 /* We don't have any relocs. */
4385 return TRUE;
4386
4387 /* First provide any missing ._savef* and ._restf* functions. */
4388 memcpy (sym, "._savef14", 10);
4389 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4390 {
4391 sym[7] = i / 10 + '0';
4392 sym[8] = i % 10 + '0';
4393 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4394 if (h != NULL
4395 && h->root.type == bfd_link_hash_undefined)
4396 {
4397 if (lowest_savef > i)
4398 lowest_savef = i;
4399 h->root.type = bfd_link_hash_defined;
4400 h->root.u.def.section = htab->sfpr;
4401 h->root.u.def.value = (i - lowest_savef) * 4;
4402 h->type = STT_FUNC;
4403 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4404 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
4405 }
4406 }
4407
4408 memcpy (sym, "._restf14", 10);
4409 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4410 {
4411 sym[7] = i / 10 + '0';
4412 sym[8] = i % 10 + '0';
4413 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4414 if (h != NULL
4415 && h->root.type == bfd_link_hash_undefined)
4416 {
4417 if (lowest_restf > i)
4418 lowest_restf = i;
4419 h->root.type = bfd_link_hash_defined;
4420 h->root.u.def.section = htab->sfpr;
4421 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4422 + (i - lowest_restf) * 4);
4423 h->type = STT_FUNC;
4424 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4425 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
4426 }
4427 }
4428
4429 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
4430
4431 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4432 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4433
4434 if (htab->sfpr->_raw_size == 0)
4435 {
4436 if (!htab->have_undefweak)
4437 {
4438 _bfd_strip_section_from_output (info, htab->sfpr);
4439 return TRUE;
4440 }
4441
4442 htab->sfpr->_raw_size = 4;
4443 }
4444
4445 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
4446 if (p == NULL)
4447 return FALSE;
4448 htab->sfpr->contents = p;
4449
4450 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4451 {
4452 unsigned int fpr = i << 21;
4453 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4454 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4455 p += 4;
4456 }
4457 if (lowest_savef <= MAX_SAVE_FPR)
4458 {
4459 bfd_put_32 (htab->elf.dynobj, BLR, p);
4460 p += 4;
4461 }
4462
4463 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4464 {
4465 unsigned int fpr = i << 21;
4466 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4467 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4468 p += 4;
4469 }
4470 if (lowest_restf <= MAX_SAVE_FPR
4471 || htab->sfpr->_raw_size == 4)
4472 {
4473 bfd_put_32 (htab->elf.dynobj, BLR, p);
4474 }
4475
4476 return TRUE;
4477 }
4478
4479 /* Adjust a symbol defined by a dynamic object and referenced by a
4480 regular object. The current definition is in some section of the
4481 dynamic object, but we're not including those sections. We have to
4482 change the definition to something the rest of the link can
4483 understand. */
4484
4485 static bfd_boolean
4486 ppc64_elf_adjust_dynamic_symbol (info, h)
4487 struct bfd_link_info *info;
4488 struct elf_link_hash_entry *h;
4489 {
4490 struct ppc_link_hash_table *htab;
4491 asection *s;
4492 unsigned int power_of_two;
4493
4494 htab = ppc_hash_table (info);
4495
4496 /* Deal with function syms. */
4497 if (h->type == STT_FUNC
4498 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4499 {
4500 /* Clear procedure linkage table information for any symbol that
4501 won't need a .plt entry. */
4502 struct plt_entry *ent;
4503 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4504 if (ent->plt.refcount > 0)
4505 break;
4506 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4507 || ent == NULL
4508 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4509 || (! info->shared
4510 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4511 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
4512 {
4513 h->plt.plist = NULL;
4514 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4515 }
4516 return TRUE;
4517 }
4518 else
4519 h->plt.plist = NULL;
4520
4521 /* If this is a weak symbol, and there is a real definition, the
4522 processor independent code will have arranged for us to see the
4523 real definition first, and we can just use the same value. */
4524 if (h->weakdef != NULL)
4525 {
4526 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4527 || h->weakdef->root.type == bfd_link_hash_defweak);
4528 h->root.u.def.section = h->weakdef->root.u.def.section;
4529 h->root.u.def.value = h->weakdef->root.u.def.value;
4530 if (ELIMINATE_COPY_RELOCS)
4531 h->elf_link_hash_flags
4532 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4533 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4534 return TRUE;
4535 }
4536
4537 /* This is a reference to a symbol defined by a dynamic object which
4538 is not a function. */
4539
4540 /* If we are creating a shared library, we must presume that the
4541 only references to the symbol are via the global offset table.
4542 For such cases we need not do anything here; the relocations will
4543 be handled correctly by relocate_section. */
4544 if (info->shared)
4545 return TRUE;
4546
4547 /* If there are no references to this symbol that do not use the
4548 GOT, we don't need to generate a copy reloc. */
4549 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4550 return TRUE;
4551
4552 if (ELIMINATE_COPY_RELOCS)
4553 {
4554 struct ppc_link_hash_entry * eh;
4555 struct ppc_dyn_relocs *p;
4556
4557 eh = (struct ppc_link_hash_entry *) h;
4558 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4559 {
4560 s = p->sec->output_section;
4561 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4562 break;
4563 }
4564
4565 /* If we didn't find any dynamic relocs in read-only sections, then
4566 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4567 if (p == NULL)
4568 {
4569 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4570 return TRUE;
4571 }
4572 }
4573
4574 /* We must allocate the symbol in our .dynbss section, which will
4575 become part of the .bss section of the executable. There will be
4576 an entry for this symbol in the .dynsym section. The dynamic
4577 object will contain position independent code, so all references
4578 from the dynamic object to this symbol will go through the global
4579 offset table. The dynamic linker will use the .dynsym entry to
4580 determine the address it must put in the global offset table, so
4581 both the dynamic object and the regular object will refer to the
4582 same memory location for the variable. */
4583
4584 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4585 to copy the initial value out of the dynamic object and into the
4586 runtime process image. We need to remember the offset into the
4587 .rela.bss section we are going to use. */
4588 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4589 {
4590 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
4591 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4592 }
4593
4594 /* We need to figure out the alignment required for this symbol. I
4595 have no idea how ELF linkers handle this. */
4596 power_of_two = bfd_log2 (h->size);
4597 if (power_of_two > 4)
4598 power_of_two = 4;
4599
4600 /* Apply the required alignment. */
4601 s = htab->sdynbss;
4602 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
4603 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4604 {
4605 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4606 return FALSE;
4607 }
4608
4609 /* Define the symbol as being at this point in the section. */
4610 h->root.u.def.section = s;
4611 h->root.u.def.value = s->_raw_size;
4612
4613 /* Increment the section size to make room for the symbol. */
4614 s->_raw_size += h->size;
4615
4616 return TRUE;
4617 }
4618
4619 /* If given a function descriptor symbol, hide both the function code
4620 sym and the descriptor. */
4621 static void
4622 ppc64_elf_hide_symbol (info, h, force_local)
4623 struct bfd_link_info *info;
4624 struct elf_link_hash_entry *h;
4625 bfd_boolean force_local;
4626 {
4627 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4628
4629 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
4630 {
4631 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
4632
4633 if (fh == NULL)
4634 {
4635 const char *p, *q;
4636 struct ppc_link_hash_table *htab;
4637 char save;
4638
4639 /* We aren't supposed to use alloca in BFD because on
4640 systems which do not have alloca the version in libiberty
4641 calls xmalloc, which might cause the program to crash
4642 when it runs out of memory. This function doesn't have a
4643 return status, so there's no way to gracefully return an
4644 error. So cheat. We know that string[-1] can be safely
4645 dereferenced; It's either a string in an ELF string
4646 table, or allocated in an objalloc structure. */
4647
4648 p = h->root.root.string - 1;
4649 save = *p;
4650 *(char *) p = '.';
4651 htab = ppc_hash_table (info);
4652 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4653 *(char *) p = save;
4654
4655 /* Unfortunately, if it so happens that the string we were
4656 looking for was allocated immediately before this string,
4657 then we overwrote the string terminator. That's the only
4658 reason the lookup should fail. */
4659 if (fh == NULL)
4660 {
4661 q = h->root.root.string + strlen (h->root.root.string);
4662 while (q >= h->root.root.string && *q == *p)
4663 --q, --p;
4664 if (q < h->root.root.string && *p == '.')
4665 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4666 }
4667 if (fh != NULL)
4668 {
4669 ((struct ppc_link_hash_entry *) h)->oh = fh;
4670 ((struct ppc_link_hash_entry *) fh)->oh = h;
4671 }
4672 }
4673 if (fh != NULL)
4674 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
4675 }
4676 }
4677
4678 static bfd_boolean
4679 get_sym_h (hp, symp, symsecp, tls_maskp, locsymsp, r_symndx, ibfd)
4680 struct elf_link_hash_entry **hp;
4681 Elf_Internal_Sym **symp;
4682 asection **symsecp;
4683 char **tls_maskp;
4684 Elf_Internal_Sym **locsymsp;
4685 unsigned long r_symndx;
4686 bfd *ibfd;
4687 {
4688 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4689
4690 if (r_symndx >= symtab_hdr->sh_info)
4691 {
4692 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4693 struct elf_link_hash_entry *h;
4694
4695 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4696 while (h->root.type == bfd_link_hash_indirect
4697 || h->root.type == bfd_link_hash_warning)
4698 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4699
4700 if (hp != NULL)
4701 *hp = h;
4702
4703 if (symp != NULL)
4704 *symp = NULL;
4705
4706 if (symsecp != NULL)
4707 {
4708 asection *symsec = NULL;
4709 if (h->root.type == bfd_link_hash_defined
4710 || h->root.type == bfd_link_hash_defweak)
4711 symsec = h->root.u.def.section;
4712 *symsecp = symsec;
4713 }
4714
4715 if (tls_maskp != NULL)
4716 {
4717 struct ppc_link_hash_entry *eh;
4718
4719 eh = (struct ppc_link_hash_entry *) h;
4720 *tls_maskp = &eh->tls_mask;
4721 }
4722 }
4723 else
4724 {
4725 Elf_Internal_Sym *sym;
4726 Elf_Internal_Sym *locsyms = *locsymsp;
4727
4728 if (locsyms == NULL)
4729 {
4730 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4731 if (locsyms == NULL)
4732 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4733 symtab_hdr->sh_info,
4734 0, NULL, NULL, NULL);
4735 if (locsyms == NULL)
4736 return FALSE;
4737 *locsymsp = locsyms;
4738 }
4739 sym = locsyms + r_symndx;
4740
4741 if (hp != NULL)
4742 *hp = NULL;
4743
4744 if (symp != NULL)
4745 *symp = sym;
4746
4747 if (symsecp != NULL)
4748 {
4749 asection *symsec = NULL;
4750 if ((sym->st_shndx != SHN_UNDEF
4751 && sym->st_shndx < SHN_LORESERVE)
4752 || sym->st_shndx > SHN_HIRESERVE)
4753 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4754 *symsecp = symsec;
4755 }
4756
4757 if (tls_maskp != NULL)
4758 {
4759 struct got_entry **lgot_ents;
4760 char *tls_mask;
4761
4762 tls_mask = NULL;
4763 lgot_ents = elf_local_got_ents (ibfd);
4764 if (lgot_ents != NULL)
4765 {
4766 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4767 tls_mask = &lgot_masks[r_symndx];
4768 }
4769 *tls_maskp = tls_mask;
4770 }
4771 }
4772 return TRUE;
4773 }
4774
4775 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4776 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4777 type suitable for optimization, and 1 otherwise. */
4778
4779 static int
4780 get_tls_mask (tls_maskp, locsymsp, rel, ibfd)
4781 char **tls_maskp;
4782 Elf_Internal_Sym **locsymsp;
4783 const Elf_Internal_Rela *rel;
4784 bfd *ibfd;
4785 {
4786 unsigned long r_symndx;
4787 unsigned int next_r;
4788 struct elf_link_hash_entry *h;
4789 Elf_Internal_Sym *sym;
4790 asection *sec;
4791 bfd_vma off;
4792
4793 r_symndx = ELF64_R_SYM (rel->r_info);
4794 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4795 return 0;
4796
4797 if ((*tls_maskp != NULL && **tls_maskp != 0)
4798 || sec == NULL
4799 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4800 return 1;
4801
4802 /* Look inside a TOC section too. */
4803 if (h != NULL)
4804 {
4805 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4806 off = h->root.u.def.value;
4807 }
4808 else
4809 off = sym->st_value;
4810 off += rel->r_addend;
4811 BFD_ASSERT (off % 8 == 0);
4812 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4813 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4814 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4815 return 0;
4816 if (h == NULL
4817 || h->root.type == bfd_link_hash_defined
4818 || h->root.type == bfd_link_hash_defweak)
4819 {
4820 if (next_r == (unsigned) -1)
4821 return 2;
4822 if (next_r == (unsigned) -2
4823 && (h == NULL
4824 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4825 return 3;
4826 }
4827 return 1;
4828 }
4829
4830 bfd_boolean
4831 ppc64_elf_edit_opd (obfd, info)
4832 bfd *obfd;
4833 struct bfd_link_info *info;
4834 {
4835 bfd *ibfd;
4836
4837 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4838 {
4839 asection *sec;
4840 Elf_Internal_Rela *relstart, *rel, *relend;
4841 Elf_Internal_Shdr *symtab_hdr;
4842 Elf_Internal_Sym *local_syms;
4843 struct elf_link_hash_entry **sym_hashes;
4844 bfd_vma offset;
4845 bfd_size_type amt;
4846 long *adjust;
4847 bfd_boolean need_edit;
4848
4849 sec = bfd_get_section_by_name (ibfd, ".opd");
4850 if (sec == NULL)
4851 continue;
4852
4853 amt = sec->_raw_size * sizeof (long) / 24;
4854 adjust = ppc64_elf_section_data (sec)->opd.adjust;
4855 if (adjust == NULL)
4856 {
4857 /* Must be a ld -r link. ie. check_relocs hasn't been
4858 called. */
4859 adjust = (long *) bfd_zalloc (obfd, amt);
4860 ppc64_elf_section_data (sec)->opd.adjust = adjust;
4861 }
4862 memset (adjust, 0, (size_t) amt);
4863
4864 if (sec->output_section == bfd_abs_section_ptr)
4865 continue;
4866
4867 /* Look through the section relocs. */
4868 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
4869 continue;
4870
4871 local_syms = NULL;
4872 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4873 sym_hashes = elf_sym_hashes (ibfd);
4874
4875 /* Read the relocations. */
4876 relstart = _bfd_elf64_link_read_relocs (ibfd, sec, (PTR) NULL,
4877 (Elf_Internal_Rela *) NULL,
4878 info->keep_memory);
4879 if (relstart == NULL)
4880 return FALSE;
4881
4882 /* First run through the relocs to check they are sane, and to
4883 determine whether we need to edit this opd section. */
4884 need_edit = FALSE;
4885 offset = 0;
4886 relend = relstart + sec->reloc_count;
4887 for (rel = relstart; rel < relend; rel++)
4888 {
4889 enum elf_ppc64_reloc_type r_type;
4890 unsigned long r_symndx;
4891 asection *sym_sec;
4892 struct elf_link_hash_entry *h;
4893 Elf_Internal_Sym *sym;
4894
4895 /* .opd contains a regular array of 24 byte entries. We're
4896 only interested in the reloc pointing to a function entry
4897 point. */
4898 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4899 if (r_type == R_PPC64_TOC)
4900 continue;
4901
4902 if (r_type != R_PPC64_ADDR64)
4903 {
4904 (*_bfd_error_handler)
4905 (_("%s: unexpected reloc type %u in .opd section"),
4906 bfd_archive_filename (ibfd), r_type);
4907 need_edit = FALSE;
4908 break;
4909 }
4910
4911 if (rel + 1 >= relend)
4912 continue;
4913 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
4914 if (r_type != R_PPC64_TOC)
4915 continue;
4916
4917 if (rel->r_offset != offset)
4918 {
4919 /* If someone messes with .opd alignment then after a
4920 "ld -r" we might have padding in the middle of .opd.
4921 Also, there's nothing to prevent someone putting
4922 something silly in .opd with the assembler. No .opd
4923 optimization for them! */
4924 (*_bfd_error_handler)
4925 (_("%s: .opd is not a regular array of opd entries"),
4926 bfd_archive_filename (ibfd));
4927 need_edit = FALSE;
4928 break;
4929 }
4930
4931 r_symndx = ELF64_R_SYM (rel->r_info);
4932 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
4933 r_symndx, ibfd))
4934 goto error_free_rel;
4935
4936 if (sym_sec == NULL || sym_sec->owner == NULL)
4937 {
4938 const char *sym_name;
4939 if (h != NULL)
4940 sym_name = h->root.root.string;
4941 else
4942 sym_name = bfd_elf_local_sym_name (ibfd, sym);
4943
4944 (*_bfd_error_handler)
4945 (_("%s: undefined sym `%s' in .opd section"),
4946 bfd_archive_filename (ibfd),
4947 sym_name);
4948 need_edit = FALSE;
4949 break;
4950 }
4951
4952 /* opd entries are always for functions defined in the
4953 current input bfd. If the symbol isn't defined in the
4954 input bfd, then we won't be using the function in this
4955 bfd; It must be defined in a linkonce section in another
4956 bfd, or is weak. It's also possible that we are
4957 discarding the function due to a linker script /DISCARD/,
4958 which we test for via the output_section. */
4959 if (sym_sec->owner != ibfd
4960 || sym_sec->output_section == bfd_abs_section_ptr)
4961 need_edit = TRUE;
4962
4963 offset += 24;
4964 }
4965
4966 if (need_edit)
4967 {
4968 Elf_Internal_Rela *write_rel;
4969 bfd_byte *rptr, *wptr;
4970 bfd_boolean skip;
4971
4972 /* This seems a waste of time as input .opd sections are all
4973 zeros as generated by gcc, but I suppose there's no reason
4974 this will always be so. We might start putting something in
4975 the third word of .opd entries. */
4976 if ((sec->flags & SEC_IN_MEMORY) == 0)
4977 {
4978 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
4979 if (loc == NULL
4980 || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
4981 sec->_raw_size))
4982 {
4983 if (local_syms != NULL
4984 && symtab_hdr->contents != (unsigned char *) local_syms)
4985 free (local_syms);
4986 error_free_rel:
4987 if (elf_section_data (sec)->relocs != relstart)
4988 free (relstart);
4989 return FALSE;
4990 }
4991 sec->contents = loc;
4992 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
4993 }
4994
4995 elf_section_data (sec)->relocs = relstart;
4996
4997 wptr = sec->contents;
4998 rptr = sec->contents;
4999 write_rel = relstart;
5000 skip = FALSE;
5001 offset = 0;
5002 for (rel = relstart; rel < relend; rel++)
5003 {
5004 if (rel->r_offset == offset)
5005 {
5006 unsigned long r_symndx;
5007 asection *sym_sec;
5008 struct elf_link_hash_entry *h;
5009 Elf_Internal_Sym *sym;
5010
5011 r_symndx = ELF64_R_SYM (rel->r_info);
5012 get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5013 r_symndx, ibfd);
5014
5015 skip = (sym_sec->owner != ibfd
5016 || sym_sec->output_section == bfd_abs_section_ptr);
5017 if (skip)
5018 {
5019 if (h != NULL && sym_sec->owner == ibfd)
5020 {
5021 /* Arrange for the function descriptor sym
5022 to be dropped. */
5023 struct ppc_link_hash_entry *fdh;
5024 struct ppc_link_hash_entry *fh;
5025
5026 fh = (struct ppc_link_hash_entry *) h;
5027 fdh = (struct ppc_link_hash_entry *) fh->oh;
5028 if (fdh == NULL)
5029 {
5030 const char *fd_name;
5031 struct ppc_link_hash_table *htab;
5032
5033 fd_name = h->root.root.string + 1;
5034 htab = ppc_hash_table (info);
5035 fdh = (struct ppc_link_hash_entry *)
5036 elf_link_hash_lookup (&htab->elf, fd_name,
5037 FALSE, FALSE, FALSE);
5038 fdh->is_func_descriptor = 1;
5039 fdh->oh = &fh->elf;
5040 fh->is_func = 1;
5041 fh->oh = &fdh->elf;
5042 }
5043
5044 fdh->elf.root.u.def.value = 0;
5045 fdh->elf.root.u.def.section = sym_sec;
5046 }
5047 }
5048 else
5049 {
5050 /* We'll be keeping this opd entry. */
5051
5052 if (h != NULL)
5053 {
5054 /* Redefine the function descriptor symbol
5055 to this location in the opd section.
5056 We've checked above that opd relocs are
5057 ordered. */
5058 struct ppc_link_hash_entry *fdh;
5059 struct ppc_link_hash_entry *fh;
5060
5061 fh = (struct ppc_link_hash_entry *) h;
5062 fdh = (struct ppc_link_hash_entry *) fh->oh;
5063 if (fdh == NULL)
5064 {
5065 const char *fd_name;
5066 struct ppc_link_hash_table *htab;
5067
5068 fd_name = h->root.root.string + 1;
5069 htab = ppc_hash_table (info);
5070 fdh = (struct ppc_link_hash_entry *)
5071 elf_link_hash_lookup (&htab->elf, fd_name,
5072 FALSE, FALSE, FALSE);
5073 fdh->is_func_descriptor = 1;
5074 fdh->oh = &fh->elf;
5075 fh->is_func = 1;
5076 fh->oh = &fdh->elf;
5077 }
5078
5079 fdh->elf.root.u.def.value = wptr - sec->contents;
5080 }
5081 else
5082 {
5083 /* Local syms are a bit tricky. We could
5084 tweak them as they can be cached, but
5085 we'd need to look through the local syms
5086 for the function descriptor sym which we
5087 don't have at the moment. So keep an
5088 array of adjustments. */
5089 adjust[rel->r_offset / 24] = wptr - rptr;
5090 }
5091
5092 if (wptr != rptr)
5093 memcpy (wptr, rptr, 24);
5094 wptr += 24;
5095 }
5096 rptr += 24;
5097 offset += 24;
5098 }
5099
5100 /* We need to adjust any reloc offsets to point to the
5101 new opd entries. While we're at it, we may as well
5102 remove redundant relocs. */
5103 if (!skip)
5104 {
5105 rel->r_offset += wptr - rptr;
5106 if (write_rel != rel)
5107 memcpy (write_rel, rel, sizeof (*rel));
5108 ++write_rel;
5109 }
5110 }
5111
5112 sec->_cooked_size = wptr - sec->contents;
5113 sec->reloc_count = write_rel - relstart;
5114 /* Fudge the size too, as this is used later in
5115 elf_bfd_final_link if we are emitting relocs. */
5116 elf_section_data (sec)->rel_hdr.sh_size
5117 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5118 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5119 }
5120 else if (elf_section_data (sec)->relocs != relstart)
5121 free (relstart);
5122
5123 if (local_syms != NULL
5124 && symtab_hdr->contents != (unsigned char *) local_syms)
5125 {
5126 if (!info->keep_memory)
5127 free (local_syms);
5128 else
5129 symtab_hdr->contents = (unsigned char *) local_syms;
5130 }
5131 }
5132
5133 return TRUE;
5134 }
5135
5136 /* Set htab->tls_sec. */
5137
5138 bfd_boolean
5139 ppc64_elf_tls_setup (obfd, info)
5140 bfd *obfd;
5141 struct bfd_link_info *info;
5142 {
5143 asection *tls;
5144 struct ppc_link_hash_table *htab;
5145
5146 for (tls = obfd->sections; tls != NULL; tls = tls->next)
5147 if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
5148 == (SEC_THREAD_LOCAL | SEC_LOAD))
5149 break;
5150
5151 htab = ppc_hash_table (info);
5152 htab->tls_sec = tls;
5153
5154 if (htab->tls_get_addr != NULL)
5155 {
5156 struct elf_link_hash_entry *h = htab->tls_get_addr;
5157
5158 while (h->root.type == bfd_link_hash_indirect
5159 || h->root.type == bfd_link_hash_warning)
5160 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5161
5162 htab->tls_get_addr = h;
5163 }
5164
5165 return tls != NULL;
5166 }
5167
5168 /* Run through all the TLS relocs looking for optimization
5169 opportunities. The linker has been hacked (see ppc64elf.em) to do
5170 a preliminary section layout so that we know the TLS segment
5171 offsets. We can't optimize earlier because some optimizations need
5172 to know the tp offset, and we need to optimize before allocating
5173 dynamic relocations. */
5174
5175 bfd_boolean
5176 ppc64_elf_tls_optimize (obfd, info)
5177 bfd *obfd ATTRIBUTE_UNUSED;
5178 struct bfd_link_info *info;
5179 {
5180 bfd *ibfd;
5181 asection *sec;
5182 struct ppc_link_hash_table *htab;
5183
5184 if (info->relocateable || info->shared)
5185 return TRUE;
5186
5187 htab = ppc_hash_table (info);
5188 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5189 {
5190 Elf_Internal_Sym *locsyms = NULL;
5191
5192 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5193 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5194 {
5195 Elf_Internal_Rela *relstart, *rel, *relend;
5196 int expecting_tls_get_addr;
5197
5198 /* Read the relocations. */
5199 relstart = _bfd_elf64_link_read_relocs (ibfd, sec, (PTR) NULL,
5200 (Elf_Internal_Rela *) NULL,
5201 info->keep_memory);
5202 if (relstart == NULL)
5203 return FALSE;
5204
5205 expecting_tls_get_addr = 0;
5206 relend = relstart + sec->reloc_count;
5207 for (rel = relstart; rel < relend; rel++)
5208 {
5209 enum elf_ppc64_reloc_type r_type;
5210 unsigned long r_symndx;
5211 struct elf_link_hash_entry *h;
5212 Elf_Internal_Sym *sym;
5213 asection *sym_sec;
5214 char *tls_mask;
5215 char tls_set, tls_clear, tls_type = 0;
5216 bfd_vma value;
5217 bfd_boolean ok_tprel, is_local;
5218
5219 r_symndx = ELF64_R_SYM (rel->r_info);
5220 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5221 r_symndx, ibfd))
5222 {
5223 err_free_rel:
5224 if (elf_section_data (sec)->relocs != relstart)
5225 free (relstart);
5226 if (locsyms != NULL
5227 && (elf_tdata (ibfd)->symtab_hdr.contents
5228 != (unsigned char *) locsyms))
5229 free (locsyms);
5230 return FALSE;
5231 }
5232
5233 if (h != NULL)
5234 {
5235 if (h->root.type != bfd_link_hash_defined
5236 && h->root.type != bfd_link_hash_defweak)
5237 continue;
5238 value = h->root.u.def.value;
5239 }
5240 else
5241 value = sym->st_value;
5242
5243 ok_tprel = FALSE;
5244 is_local = FALSE;
5245 if (h == NULL
5246 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5247 {
5248 is_local = TRUE;
5249 value += sym_sec->output_offset;
5250 value += sym_sec->output_section->vma;
5251 value -= htab->tls_sec->vma;
5252 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5253 < (bfd_vma) 1 << 32);
5254 }
5255
5256 r_type
5257 = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
5258 switch (r_type)
5259 {
5260 case R_PPC64_GOT_TLSLD16:
5261 case R_PPC64_GOT_TLSLD16_LO:
5262 case R_PPC64_GOT_TLSLD16_HI:
5263 case R_PPC64_GOT_TLSLD16_HA:
5264 /* These relocs should never be against a symbol
5265 defined in a shared lib. Leave them alone if
5266 that turns out to be the case. */
5267 htab->tlsld_got.refcount -= 1;
5268 if (!is_local)
5269 continue;
5270
5271 /* LD -> LE */
5272 tls_set = 0;
5273 tls_clear = TLS_LD;
5274 tls_type = TLS_TLS | TLS_LD;
5275 expecting_tls_get_addr = 1;
5276 break;
5277
5278 case R_PPC64_GOT_TLSGD16:
5279 case R_PPC64_GOT_TLSGD16_LO:
5280 case R_PPC64_GOT_TLSGD16_HI:
5281 case R_PPC64_GOT_TLSGD16_HA:
5282 if (ok_tprel)
5283 /* GD -> LE */
5284 tls_set = 0;
5285 else
5286 /* GD -> IE */
5287 tls_set = TLS_TLS | TLS_TPRELGD;
5288 tls_clear = TLS_GD;
5289 tls_type = TLS_TLS | TLS_GD;
5290 expecting_tls_get_addr = 1;
5291 break;
5292
5293 case R_PPC64_GOT_TPREL16_DS:
5294 case R_PPC64_GOT_TPREL16_LO_DS:
5295 case R_PPC64_GOT_TPREL16_HI:
5296 case R_PPC64_GOT_TPREL16_HA:
5297 expecting_tls_get_addr = 0;
5298 if (ok_tprel)
5299 {
5300 /* IE -> LE */
5301 tls_set = 0;
5302 tls_clear = TLS_TPREL;
5303 tls_type = TLS_TLS | TLS_TPREL;
5304 break;
5305 }
5306 else
5307 continue;
5308
5309 case R_PPC64_REL14:
5310 case R_PPC64_REL14_BRTAKEN:
5311 case R_PPC64_REL14_BRNTAKEN:
5312 case R_PPC64_REL24:
5313 if (h != NULL
5314 && h == htab->tls_get_addr)
5315 {
5316 if (!expecting_tls_get_addr
5317 && rel != relstart
5318 && ((ELF64_R_TYPE (rel[-1].r_info)
5319 == R_PPC64_TOC16)
5320 || (ELF64_R_TYPE (rel[-1].r_info)
5321 == R_PPC64_TOC16_LO)))
5322 {
5323 /* Check for toc tls entries. */
5324 char *toc_tls;
5325 int retval;
5326
5327 retval = get_tls_mask (&toc_tls, &locsyms,
5328 rel - 1, ibfd);
5329 if (retval == 0)
5330 goto err_free_rel;
5331 if (toc_tls != NULL)
5332 expecting_tls_get_addr = retval > 1;
5333 }
5334
5335 if (expecting_tls_get_addr)
5336 {
5337 struct plt_entry *ent;
5338 for (ent = h->plt.plist; ent; ent = ent->next)
5339 if (ent->addend == 0)
5340 {
5341 if (ent->plt.refcount > 0)
5342 ent->plt.refcount -= 1;
5343 break;
5344 }
5345 }
5346 }
5347 expecting_tls_get_addr = 0;
5348 continue;
5349
5350 case R_PPC64_TPREL64:
5351 expecting_tls_get_addr = 0;
5352 if (ok_tprel)
5353 {
5354 /* IE -> LE */
5355 tls_set = TLS_EXPLICIT;
5356 tls_clear = TLS_TPREL;
5357 break;
5358 }
5359 else
5360 continue;
5361
5362 case R_PPC64_DTPMOD64:
5363 expecting_tls_get_addr = 0;
5364 if (rel + 1 < relend
5365 && (rel[1].r_info
5366 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5367 && rel[1].r_offset == rel->r_offset + 8)
5368 {
5369 if (ok_tprel)
5370 /* GD -> LE */
5371 tls_set = TLS_EXPLICIT | TLS_GD;
5372 else
5373 /* GD -> IE */
5374 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5375 tls_clear = TLS_GD;
5376 }
5377 else
5378 {
5379 if (!is_local)
5380 continue;
5381
5382 /* LD -> LE */
5383 tls_set = TLS_EXPLICIT;
5384 tls_clear = TLS_LD;
5385 }
5386 break;
5387
5388 default:
5389 expecting_tls_get_addr = 0;
5390 continue;
5391 }
5392
5393 if ((tls_set & TLS_EXPLICIT) == 0)
5394 {
5395 struct got_entry *ent;
5396
5397 /* Adjust got entry for this reloc. */
5398 if (h != NULL)
5399 ent = h->got.glist;
5400 else
5401 ent = elf_local_got_ents (ibfd)[r_symndx];
5402
5403 for (; ent != NULL; ent = ent->next)
5404 if (ent->addend == rel->r_addend
5405 && ent->tls_type == tls_type)
5406 break;
5407 if (ent == NULL)
5408 abort ();
5409
5410 if (tls_set == 0)
5411 {
5412 /* We managed to get rid of a got entry. */
5413 if (ent->got.refcount > 0)
5414 ent->got.refcount -= 1;
5415 }
5416 }
5417 else if (h != NULL)
5418 {
5419 struct ppc_link_hash_entry * eh;
5420 struct ppc_dyn_relocs **pp;
5421 struct ppc_dyn_relocs *p;
5422
5423 /* Adjust dynamic relocs. */
5424 eh = (struct ppc_link_hash_entry *) h;
5425 for (pp = &eh->dyn_relocs;
5426 (p = *pp) != NULL;
5427 pp = &p->next)
5428 if (p->sec == sec)
5429 {
5430 /* If we got rid of a DTPMOD/DTPREL reloc
5431 pair then we'll lose one or two dyn
5432 relocs. */
5433 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5434 p->count -= 1;
5435 p->count -= 1;
5436 if (p->count == 0)
5437 *pp = p->next;
5438 break;
5439 }
5440 }
5441
5442 *tls_mask |= tls_set;
5443 *tls_mask &= ~tls_clear;
5444 }
5445
5446 if (elf_section_data (sec)->relocs != relstart)
5447 free (relstart);
5448 }
5449
5450 if (locsyms != NULL
5451 && (elf_tdata (ibfd)->symtab_hdr.contents
5452 != (unsigned char *) locsyms))
5453 {
5454 if (!info->keep_memory)
5455 free (locsyms);
5456 else
5457 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5458 }
5459 }
5460 return TRUE;
5461 }
5462
5463 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5464 will be called from elflink.h. If elflink.h doesn't call our
5465 finish_dynamic_symbol routine, we'll need to do something about
5466 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5467 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
5468 ((DYN) \
5469 && ((SHARED) \
5470 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5471 && ((H)->dynindx != -1 \
5472 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5473
5474 /* Allocate space in .plt, .got and associated reloc sections for
5475 dynamic relocs. */
5476
5477 static bfd_boolean
5478 allocate_dynrelocs (h, inf)
5479 struct elf_link_hash_entry *h;
5480 PTR inf;
5481 {
5482 struct bfd_link_info *info;
5483 struct ppc_link_hash_table *htab;
5484 asection *s;
5485 struct ppc_link_hash_entry *eh;
5486 struct ppc_dyn_relocs *p;
5487 struct got_entry *gent;
5488
5489 if (h->root.type == bfd_link_hash_indirect)
5490 return TRUE;
5491
5492 if (h->root.type == bfd_link_hash_warning)
5493 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5494
5495 info = (struct bfd_link_info *) inf;
5496 htab = ppc_hash_table (info);
5497
5498 if (htab->elf.dynamic_sections_created
5499 && h->dynindx != -1
5500 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5501 {
5502 struct plt_entry *pent;
5503 bfd_boolean doneone = FALSE;
5504 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5505 if (pent->plt.refcount > 0)
5506 {
5507 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5508
5509 /* If this is the first .plt entry, make room for the special
5510 first entry. */
5511 s = htab->splt;
5512 if (s->_raw_size == 0)
5513 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
5514
5515 pent->plt.offset = s->_raw_size;
5516
5517 /* Make room for this entry. */
5518 s->_raw_size += PLT_ENTRY_SIZE;
5519
5520 /* Make room for the .glink code. */
5521 s = htab->sglink;
5522 if (s->_raw_size == 0)
5523 s->_raw_size += GLINK_CALL_STUB_SIZE;
5524 /* We need bigger stubs past index 32767. */
5525 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5526 s->_raw_size += 4;
5527 s->_raw_size += 2*4;
5528
5529 /* We also need to make an entry in the .rela.plt section. */
5530 s = htab->srelplt;
5531 s->_raw_size += sizeof (Elf64_External_Rela);
5532 doneone = TRUE;
5533 }
5534 else
5535 pent->plt.offset = (bfd_vma) -1;
5536 if (!doneone)
5537 {
5538 h->plt.plist = NULL;
5539 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5540 }
5541 }
5542 else
5543 {
5544 h->plt.plist = NULL;
5545 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5546 }
5547
5548 eh = (struct ppc_link_hash_entry *) h;
5549 /* Run through the TLS GD got entries first if we're changing them
5550 to TPREL. */
5551 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5552 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5553 if (gent->got.refcount > 0
5554 && (gent->tls_type & TLS_GD) != 0)
5555 {
5556 /* This was a GD entry that has been converted to TPREL. If
5557 there happens to be a TPREL entry we can use that one. */
5558 struct got_entry *ent;
5559 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5560 if (ent->got.refcount > 0
5561 && (ent->tls_type & TLS_TPREL) != 0
5562 && ent->addend == gent->addend)
5563 {
5564 gent->got.refcount = 0;
5565 break;
5566 }
5567
5568 /* If not, then we'll be using our own TPREL entry. */
5569 if (gent->got.refcount != 0)
5570 gent->tls_type = TLS_TLS | TLS_TPREL;
5571 }
5572
5573 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5574 if (gent->got.refcount > 0)
5575 {
5576 bfd_boolean dyn;
5577
5578 /* Make sure this symbol is output as a dynamic symbol.
5579 Undefined weak syms won't yet be marked as dynamic,
5580 nor will all TLS symbols. */
5581 if (h->dynindx == -1
5582 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5583 {
5584 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5585 return FALSE;
5586 }
5587
5588 if ((gent->tls_type & TLS_LD) != 0
5589 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5590 {
5591 gent->got.offset = htab->tlsld_got.offset;
5592 continue;
5593 }
5594
5595 s = htab->sgot;
5596 gent->got.offset = s->_raw_size;
5597 s->_raw_size
5598 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5599 dyn = htab->elf.dynamic_sections_created;
5600 if (info->shared
5601 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5602 htab->srelgot->_raw_size
5603 += (gent->tls_type & eh->tls_mask & TLS_GD
5604 ? 2 * sizeof (Elf64_External_Rela)
5605 : sizeof (Elf64_External_Rela));
5606 }
5607 else
5608 gent->got.offset = (bfd_vma) -1;
5609
5610 if (eh->dyn_relocs == NULL)
5611 return TRUE;
5612
5613 /* In the shared -Bsymbolic case, discard space allocated for
5614 dynamic pc-relative relocs against symbols which turn out to be
5615 defined in regular objects. For the normal shared case, discard
5616 space for relocs that have become local due to symbol visibility
5617 changes. */
5618
5619 if (info->shared)
5620 {
5621 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
5622 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
5623 || info->symbolic))
5624 {
5625 struct ppc_dyn_relocs **pp;
5626
5627 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5628 {
5629 p->count -= p->pc_count;
5630 p->pc_count = 0;
5631 if (p->count == 0)
5632 *pp = p->next;
5633 else
5634 pp = &p->next;
5635 }
5636 }
5637 }
5638 else if (ELIMINATE_COPY_RELOCS)
5639 {
5640 /* For the non-shared case, discard space for relocs against
5641 symbols which turn out to need copy relocs or are not
5642 dynamic. */
5643
5644 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5645 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5646 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5647 {
5648 /* Make sure this symbol is output as a dynamic symbol.
5649 Undefined weak syms won't yet be marked as dynamic. */
5650 if (h->dynindx == -1
5651 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5652 {
5653 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5654 return FALSE;
5655 }
5656
5657 /* If that succeeded, we know we'll be keeping all the
5658 relocs. */
5659 if (h->dynindx != -1)
5660 goto keep;
5661 }
5662
5663 eh->dyn_relocs = NULL;
5664
5665 keep: ;
5666 }
5667
5668 /* Finally, allocate space. */
5669 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5670 {
5671 asection *sreloc = elf_section_data (p->sec)->sreloc;
5672 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
5673 }
5674
5675 return TRUE;
5676 }
5677
5678 /* Find any dynamic relocs that apply to read-only sections. */
5679
5680 static bfd_boolean
5681 readonly_dynrelocs (h, inf)
5682 struct elf_link_hash_entry *h;
5683 PTR inf;
5684 {
5685 struct ppc_link_hash_entry *eh;
5686 struct ppc_dyn_relocs *p;
5687
5688 if (h->root.type == bfd_link_hash_warning)
5689 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5690
5691 eh = (struct ppc_link_hash_entry *) h;
5692 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5693 {
5694 asection *s = p->sec->output_section;
5695
5696 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5697 {
5698 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5699
5700 info->flags |= DF_TEXTREL;
5701
5702 /* Not an error, just cut short the traversal. */
5703 return FALSE;
5704 }
5705 }
5706 return TRUE;
5707 }
5708
5709 /* Set the sizes of the dynamic sections. */
5710
5711 static bfd_boolean
5712 ppc64_elf_size_dynamic_sections (output_bfd, info)
5713 bfd *output_bfd ATTRIBUTE_UNUSED;
5714 struct bfd_link_info *info;
5715 {
5716 struct ppc_link_hash_table *htab;
5717 bfd *dynobj;
5718 asection *s;
5719 bfd_boolean relocs;
5720 bfd *ibfd;
5721
5722 htab = ppc_hash_table (info);
5723 dynobj = htab->elf.dynobj;
5724 if (dynobj == NULL)
5725 abort ();
5726
5727 if (htab->elf.dynamic_sections_created)
5728 {
5729 /* Set the contents of the .interp section to the interpreter. */
5730 if (! info->shared)
5731 {
5732 s = bfd_get_section_by_name (dynobj, ".interp");
5733 if (s == NULL)
5734 abort ();
5735 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
5736 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5737 }
5738 }
5739
5740 if (htab->tlsld_got.refcount > 0)
5741 {
5742 htab->tlsld_got.offset = htab->sgot->_raw_size;
5743 htab->sgot->_raw_size += 16;
5744 if (info->shared)
5745 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
5746 }
5747 else
5748 htab->tlsld_got.offset = (bfd_vma) -1;
5749
5750 /* Set up .got offsets for local syms, and space for local dynamic
5751 relocs. */
5752 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5753 {
5754 struct got_entry **lgot_ents;
5755 struct got_entry **end_lgot_ents;
5756 char *lgot_masks;
5757 bfd_size_type locsymcount;
5758 Elf_Internal_Shdr *symtab_hdr;
5759 asection *srel;
5760
5761 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5762 continue;
5763
5764 for (s = ibfd->sections; s != NULL; s = s->next)
5765 {
5766 struct ppc_dyn_relocs *p;
5767
5768 for (p = *((struct ppc_dyn_relocs **)
5769 &elf_section_data (s)->local_dynrel);
5770 p != NULL;
5771 p = p->next)
5772 {
5773 if (!bfd_is_abs_section (p->sec)
5774 && bfd_is_abs_section (p->sec->output_section))
5775 {
5776 /* Input section has been discarded, either because
5777 it is a copy of a linkonce section or due to
5778 linker script /DISCARD/, so we'll be discarding
5779 the relocs too. */
5780 }
5781 else if (p->count != 0)
5782 {
5783 srel = elf_section_data (p->sec)->sreloc;
5784 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
5785 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5786 info->flags |= DF_TEXTREL;
5787 }
5788 }
5789 }
5790
5791 lgot_ents = elf_local_got_ents (ibfd);
5792 if (!lgot_ents)
5793 continue;
5794
5795 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5796 locsymcount = symtab_hdr->sh_info;
5797 end_lgot_ents = lgot_ents + locsymcount;
5798 lgot_masks = (char *) end_lgot_ents;
5799 s = htab->sgot;
5800 srel = htab->srelgot;
5801 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5802 {
5803 struct got_entry *ent;
5804
5805 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5806 if (ent->got.refcount > 0)
5807 {
5808 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5809 {
5810 if (htab->tlsld_got.offset == (bfd_vma) -1)
5811 {
5812 htab->tlsld_got.offset = s->_raw_size;
5813 s->_raw_size += 16;
5814 if (info->shared)
5815 srel->_raw_size += sizeof (Elf64_External_Rela);
5816 }
5817 ent->got.offset = htab->tlsld_got.offset;
5818 }
5819 else
5820 {
5821 ent->got.offset = s->_raw_size;
5822 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5823 {
5824 s->_raw_size += 16;
5825 if (info->shared)
5826 srel->_raw_size += 2 * sizeof (Elf64_External_Rela);
5827 }
5828 else
5829 {
5830 s->_raw_size += 8;
5831 if (info->shared)
5832 srel->_raw_size += sizeof (Elf64_External_Rela);
5833 }
5834 }
5835 }
5836 else
5837 ent->got.offset = (bfd_vma) -1;
5838 }
5839 }
5840
5841 /* Allocate global sym .plt and .got entries, and space for global
5842 sym dynamic relocs. */
5843 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
5844
5845 /* We now have determined the sizes of the various dynamic sections.
5846 Allocate memory for them. */
5847 relocs = FALSE;
5848 for (s = dynobj->sections; s != NULL; s = s->next)
5849 {
5850 if ((s->flags & SEC_LINKER_CREATED) == 0)
5851 continue;
5852
5853 /* Reset _cooked_size since prelim layout will set it wrongly,
5854 and a non-zero _cooked_size sticks. */
5855 s->_cooked_size = 0;
5856
5857 if (s == htab->sbrlt || s == htab->srelbrlt)
5858 /* These haven't been allocated yet; don't strip. */
5859 continue;
5860 else if (s == htab->splt
5861 || s == htab->sgot
5862 || s == htab->sglink)
5863 {
5864 /* Strip this section if we don't need it; see the
5865 comment below. */
5866 }
5867 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5868 {
5869 if (s->_raw_size == 0)
5870 {
5871 /* If we don't need this section, strip it from the
5872 output file. This is mostly to handle .rela.bss and
5873 .rela.plt. We must create both sections in
5874 create_dynamic_sections, because they must be created
5875 before the linker maps input sections to output
5876 sections. The linker does that before
5877 adjust_dynamic_symbol is called, and it is that
5878 function which decides whether anything needs to go
5879 into these sections. */
5880 }
5881 else
5882 {
5883 if (s != htab->srelplt)
5884 relocs = TRUE;
5885
5886 /* We use the reloc_count field as a counter if we need
5887 to copy relocs into the output file. */
5888 s->reloc_count = 0;
5889 }
5890 }
5891 else
5892 {
5893 /* It's not one of our sections, so don't allocate space. */
5894 continue;
5895 }
5896
5897 if (s->_raw_size == 0)
5898 {
5899 _bfd_strip_section_from_output (info, s);
5900 continue;
5901 }
5902
5903 /* .plt is in the bss section. We don't initialise it. */
5904 if ((s->flags & SEC_LOAD) == 0)
5905 continue;
5906
5907 /* Allocate memory for the section contents. We use bfd_zalloc
5908 here in case unused entries are not reclaimed before the
5909 section's contents are written out. This should not happen,
5910 but this way if it does we get a R_PPC64_NONE reloc in .rela
5911 sections instead of garbage.
5912 We also rely on the section contents being zero when writing
5913 the GOT. */
5914 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
5915 if (s->contents == NULL)
5916 return FALSE;
5917 }
5918
5919 if (htab->elf.dynamic_sections_created)
5920 {
5921 /* Add some entries to the .dynamic section. We fill in the
5922 values later, in ppc64_elf_finish_dynamic_sections, but we
5923 must add the entries now so that we get the correct size for
5924 the .dynamic section. The DT_DEBUG entry is filled in by the
5925 dynamic linker and used by the debugger. */
5926 #define add_dynamic_entry(TAG, VAL) \
5927 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
5928
5929 if (!info->shared)
5930 {
5931 if (!add_dynamic_entry (DT_DEBUG, 0))
5932 return FALSE;
5933 }
5934
5935 if (htab->splt != NULL && htab->splt->_raw_size != 0)
5936 {
5937 if (!add_dynamic_entry (DT_PLTGOT, 0)
5938 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5939 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5940 || !add_dynamic_entry (DT_JMPREL, 0)
5941 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5942 return FALSE;
5943 }
5944
5945 if (NO_OPD_RELOCS)
5946 {
5947 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
5948 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
5949 return FALSE;
5950 }
5951
5952 if (relocs)
5953 {
5954 if (!add_dynamic_entry (DT_RELA, 0)
5955 || !add_dynamic_entry (DT_RELASZ, 0)
5956 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5957 return FALSE;
5958
5959 /* If any dynamic relocs apply to a read-only section,
5960 then we need a DT_TEXTREL entry. */
5961 if ((info->flags & DF_TEXTREL) == 0)
5962 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
5963 (PTR) info);
5964
5965 if ((info->flags & DF_TEXTREL) != 0)
5966 {
5967 if (!add_dynamic_entry (DT_TEXTREL, 0))
5968 return FALSE;
5969 }
5970 }
5971 }
5972 #undef add_dynamic_entry
5973
5974 return TRUE;
5975 }
5976
5977 /* Determine the type of stub needed, if any, for a call. */
5978
5979 static INLINE enum ppc_stub_type
5980 ppc_type_of_stub (input_sec, rel, hash, destination)
5981 asection *input_sec;
5982 const Elf_Internal_Rela *rel;
5983 struct ppc_link_hash_entry **hash;
5984 bfd_vma destination;
5985 {
5986 struct ppc_link_hash_entry *h = *hash;
5987 bfd_vma location;
5988 bfd_vma branch_offset;
5989 bfd_vma max_branch_offset;
5990 unsigned int r_type;
5991
5992 if (h != NULL)
5993 {
5994 if (h->oh != NULL
5995 && h->oh->dynindx != -1)
5996 {
5997 struct plt_entry *ent;
5998 for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
5999 if (ent->addend == rel->r_addend
6000 && ent->plt.offset != (bfd_vma) -1)
6001 {
6002 *hash = (struct ppc_link_hash_entry *) h->oh;
6003 return ppc_stub_plt_call;
6004 }
6005 }
6006
6007 if (h->elf.root.type == bfd_link_hash_undefweak
6008 || h->elf.root.type == bfd_link_hash_undefined)
6009 return ppc_stub_none;
6010 }
6011
6012 /* Determine where the call point is. */
6013 location = (input_sec->output_offset
6014 + input_sec->output_section->vma
6015 + rel->r_offset);
6016
6017 branch_offset = destination - location;
6018 r_type = ELF64_R_TYPE (rel->r_info);
6019
6020 /* Determine if a long branch stub is needed. */
6021 max_branch_offset = 1 << 25;
6022 if (r_type != (unsigned int) R_PPC64_REL24)
6023 max_branch_offset = 1 << 15;
6024
6025 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6026 /* We need a stub. Figure out whether a long_branch or plt_branch
6027 is needed later. */
6028 return ppc_stub_long_branch;
6029
6030 return ppc_stub_none;
6031 }
6032
6033 /* Build a .plt call stub. */
6034
6035 static bfd_byte *
6036 build_plt_stub (obfd, p, offset, glink)
6037 bfd *obfd;
6038 bfd_byte *p;
6039 int offset;
6040 int glink;
6041 {
6042 #define PPC_LO(v) ((v) & 0xffff)
6043 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6044 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6045
6046 if (glink)
6047 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
6048 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6049 if (!glink)
6050 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6051 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6052 if (PPC_HA (offset + 8) != PPC_HA (offset))
6053 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
6054 offset += 8;
6055 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6056 if (PPC_HA (offset + 8) != PPC_HA (offset))
6057 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
6058 offset += 8;
6059 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6060 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6061 bfd_put_32 (obfd, BCTR, p), p += 4;
6062 return p;
6063 }
6064
6065 static bfd_boolean
6066 ppc_build_one_stub (gen_entry, in_arg)
6067 struct bfd_hash_entry *gen_entry;
6068 PTR in_arg;
6069 {
6070 struct ppc_stub_hash_entry *stub_entry;
6071 struct ppc_branch_hash_entry *br_entry;
6072 struct bfd_link_info *info;
6073 struct ppc_link_hash_table *htab;
6074 asection *stub_sec;
6075 bfd *stub_bfd;
6076 bfd_byte *loc;
6077 bfd_byte *p;
6078 unsigned int indx;
6079 struct plt_entry *ent;
6080 bfd_vma off;
6081 int size;
6082
6083 /* Massage our args to the form they really have. */
6084 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6085 info = (struct bfd_link_info *) in_arg;
6086
6087 htab = ppc_hash_table (info);
6088 stub_sec = stub_entry->stub_sec;
6089
6090 /* Make a note of the offset within the stubs for this entry. */
6091 stub_entry->stub_offset = stub_sec->_cooked_size;
6092 loc = stub_sec->contents + stub_entry->stub_offset;
6093
6094 stub_bfd = stub_sec->owner;
6095
6096 switch (stub_entry->stub_type)
6097 {
6098 case ppc_stub_long_branch:
6099 /* Branches are relative. This is where we are going to. */
6100 off = (stub_entry->target_value
6101 + stub_entry->target_section->output_offset
6102 + stub_entry->target_section->output_section->vma);
6103
6104 /* And this is where we are coming from. */
6105 off -= (stub_entry->stub_offset
6106 + stub_sec->output_offset
6107 + stub_sec->output_section->vma);
6108
6109 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6110
6111 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
6112 size = 4;
6113 break;
6114
6115 case ppc_stub_plt_branch:
6116 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6117 stub_entry->root.string + 9,
6118 FALSE, FALSE);
6119 if (br_entry == NULL)
6120 {
6121 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6122 stub_entry->root.string + 9);
6123 htab->stub_error = TRUE;
6124 return FALSE;
6125 }
6126
6127 off = (stub_entry->target_value
6128 + stub_entry->target_section->output_offset
6129 + stub_entry->target_section->output_section->vma);
6130
6131 bfd_put_64 (htab->sbrlt->owner, off,
6132 htab->sbrlt->contents + br_entry->offset);
6133
6134 if (info->shared)
6135 {
6136 /* Create a reloc for the branch lookup table entry. */
6137 Elf_Internal_Rela rela;
6138 bfd_byte *loc;
6139
6140 rela.r_offset = (br_entry->offset
6141 + htab->sbrlt->output_offset
6142 + htab->sbrlt->output_section->vma);
6143 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6144 rela.r_addend = off;
6145
6146 loc = htab->srelbrlt->contents;
6147 loc += htab->srelbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6148 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, loc);
6149 }
6150
6151 off = (br_entry->offset
6152 + htab->sbrlt->output_offset
6153 + htab->sbrlt->output_section->vma
6154 - elf_gp (htab->sbrlt->output_section->owner)
6155 - TOC_BASE_OFF);
6156
6157 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
6158 {
6159 (*_bfd_error_handler)
6160 (_("linkage table error against `%s'"),
6161 stub_entry->root.string);
6162 bfd_set_error (bfd_error_bad_value);
6163 htab->stub_error = TRUE;
6164 return FALSE;
6165 }
6166
6167 indx = off;
6168 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
6169 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
6170 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
6171 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
6172 size = 16;
6173 break;
6174
6175 case ppc_stub_plt_call:
6176 /* Do the best we can for shared libraries built without
6177 exporting ".foo" for each "foo". This can happen when symbol
6178 versioning scripts strip all bar a subset of symbols. */
6179 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
6180 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
6181 {
6182 /* Point the symbol at the stub. There may be multiple stubs,
6183 we don't really care; The main thing is to make this sym
6184 defined somewhere. */
6185 stub_entry->h->oh->root.type = bfd_link_hash_defined;
6186 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
6187 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
6188 }
6189
6190 /* Now build the stub. */
6191 off = (bfd_vma) -1;
6192 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6193 if (ent->addend == stub_entry->addend)
6194 {
6195 off = ent->plt.offset;
6196 break;
6197 }
6198 if (off >= (bfd_vma) -2)
6199 abort ();
6200
6201 off &= ~ (bfd_vma) 1;
6202 off += (htab->splt->output_offset
6203 + htab->splt->output_section->vma
6204 - elf_gp (htab->splt->output_section->owner)
6205 - TOC_BASE_OFF);
6206
6207 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
6208 {
6209 (*_bfd_error_handler)
6210 (_("linkage table error against `%s'"),
6211 stub_entry->h->elf.root.root.string);
6212 bfd_set_error (bfd_error_bad_value);
6213 htab->stub_error = TRUE;
6214 return FALSE;
6215 }
6216
6217 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
6218 size = p - loc;
6219 break;
6220
6221 default:
6222 BFD_FAIL ();
6223 return FALSE;
6224 }
6225
6226 stub_sec->_cooked_size += size;
6227 return TRUE;
6228 }
6229
6230 /* As above, but don't actually build the stub. Just bump offset so
6231 we know stub section sizes, and select plt_branch stubs where
6232 long_branch stubs won't do. */
6233
6234 static bfd_boolean
6235 ppc_size_one_stub (gen_entry, in_arg)
6236 struct bfd_hash_entry *gen_entry;
6237 PTR in_arg;
6238 {
6239 struct ppc_stub_hash_entry *stub_entry;
6240 struct ppc_link_hash_table *htab;
6241 bfd_vma off;
6242 int size;
6243
6244 /* Massage our args to the form they really have. */
6245 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6246 htab = (struct ppc_link_hash_table *) in_arg;
6247
6248 if (stub_entry->stub_type == ppc_stub_plt_call)
6249 {
6250 struct plt_entry *ent;
6251 off = (bfd_vma) -1;
6252 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6253 if (ent->addend == stub_entry->addend)
6254 {
6255 off = ent->plt.offset & ~(bfd_vma) 1;
6256 break;
6257 }
6258 if (off >= (bfd_vma) -2)
6259 abort ();
6260 off += (htab->splt->output_offset
6261 + htab->splt->output_section->vma
6262 - elf_gp (htab->splt->output_section->owner)
6263 - TOC_BASE_OFF);
6264
6265 size = 28;
6266 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
6267 size += 4;
6268 }
6269 else
6270 {
6271 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
6272 stub_entry->stub_type = ppc_stub_long_branch;
6273 size = 4;
6274
6275 off = (stub_entry->target_value
6276 + stub_entry->target_section->output_offset
6277 + stub_entry->target_section->output_section->vma);
6278 off -= (stub_entry->stub_sec->_raw_size
6279 + stub_entry->stub_sec->output_offset
6280 + stub_entry->stub_sec->output_section->vma);
6281
6282 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6283 {
6284 struct ppc_branch_hash_entry *br_entry;
6285
6286 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6287 stub_entry->root.string + 9,
6288 TRUE, FALSE);
6289 if (br_entry == NULL)
6290 {
6291 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6292 stub_entry->root.string + 9);
6293 htab->stub_error = TRUE;
6294 return FALSE;
6295 }
6296
6297 if (br_entry->iter != htab->stub_iteration)
6298 {
6299 br_entry->iter = htab->stub_iteration;
6300 br_entry->offset = htab->sbrlt->_raw_size;
6301 htab->sbrlt->_raw_size += 8;
6302 }
6303 stub_entry->stub_type = ppc_stub_plt_branch;
6304 size = 16;
6305 }
6306 }
6307
6308 stub_entry->stub_sec->_raw_size += size;
6309 return TRUE;
6310 }
6311
6312 /* Set up various things so that we can make a list of input sections
6313 for each output section included in the link. Returns -1 on error,
6314 0 when no stubs will be needed, and 1 on success. */
6315
6316 int
6317 ppc64_elf_setup_section_lists (output_bfd, info)
6318 bfd *output_bfd;
6319 struct bfd_link_info *info;
6320 {
6321 bfd *input_bfd;
6322 int top_id, top_index;
6323 asection *section;
6324 asection **input_list, **list;
6325 bfd_size_type amt;
6326 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6327
6328 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
6329 || htab->sbrlt == NULL)
6330 return 0;
6331
6332 /* Find the top input section id. */
6333 for (input_bfd = info->input_bfds, top_id = 0;
6334 input_bfd != NULL;
6335 input_bfd = input_bfd->link_next)
6336 {
6337 for (section = input_bfd->sections;
6338 section != NULL;
6339 section = section->next)
6340 {
6341 if (top_id < section->id)
6342 top_id = section->id;
6343 }
6344 }
6345
6346 amt = sizeof (struct map_stub) * (top_id + 1);
6347 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
6348 if (htab->stub_group == NULL)
6349 return -1;
6350
6351 /* We can't use output_bfd->section_count here to find the top output
6352 section index as some sections may have been removed, and
6353 _bfd_strip_section_from_output doesn't renumber the indices. */
6354 for (section = output_bfd->sections, top_index = 0;
6355 section != NULL;
6356 section = section->next)
6357 {
6358 if (top_index < section->index)
6359 top_index = section->index;
6360 }
6361
6362 htab->top_index = top_index;
6363 amt = sizeof (asection *) * (top_index + 1);
6364 input_list = (asection **) bfd_malloc (amt);
6365 htab->input_list = input_list;
6366 if (input_list == NULL)
6367 return -1;
6368
6369 /* For sections we aren't interested in, mark their entries with a
6370 value we can check later. */
6371 list = input_list + top_index;
6372 do
6373 *list = bfd_abs_section_ptr;
6374 while (list-- != input_list);
6375
6376 for (section = output_bfd->sections;
6377 section != NULL;
6378 section = section->next)
6379 {
6380 if ((section->flags & SEC_CODE) != 0)
6381 input_list[section->index] = NULL;
6382 }
6383
6384 return 1;
6385 }
6386
6387 /* The linker repeatedly calls this function for each input section,
6388 in the order that input sections are linked into output sections.
6389 Build lists of input sections to determine groupings between which
6390 we may insert linker stubs. */
6391
6392 void
6393 ppc64_elf_next_input_section (info, isec)
6394 struct bfd_link_info *info;
6395 asection *isec;
6396 {
6397 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6398
6399 if (isec->output_section->index <= htab->top_index)
6400 {
6401 asection **list = htab->input_list + isec->output_section->index;
6402 if (*list != bfd_abs_section_ptr)
6403 {
6404 /* Steal the link_sec pointer for our list. */
6405 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6406 /* This happens to make the list in reverse order,
6407 which is what we want. */
6408 PREV_SEC (isec) = *list;
6409 *list = isec;
6410 }
6411 }
6412 }
6413
6414 /* See whether we can group stub sections together. Grouping stub
6415 sections may result in fewer stubs. More importantly, we need to
6416 put all .init* and .fini* stubs at the beginning of the .init or
6417 .fini output sections respectively, because glibc splits the
6418 _init and _fini functions into multiple parts. Putting a stub in
6419 the middle of a function is not a good idea. */
6420
6421 static void
6422 group_sections (htab, stub_group_size, stubs_always_before_branch)
6423 struct ppc_link_hash_table *htab;
6424 bfd_size_type stub_group_size;
6425 bfd_boolean stubs_always_before_branch;
6426 {
6427 asection **list = htab->input_list + htab->top_index;
6428 do
6429 {
6430 asection *tail = *list;
6431 if (tail == bfd_abs_section_ptr)
6432 continue;
6433 while (tail != NULL)
6434 {
6435 asection *curr;
6436 asection *prev;
6437 bfd_size_type total;
6438 bfd_boolean big_sec;
6439
6440 curr = tail;
6441 if (tail->_cooked_size)
6442 total = tail->_cooked_size;
6443 else
6444 total = tail->_raw_size;
6445 big_sec = total >= stub_group_size;
6446
6447 while ((prev = PREV_SEC (curr)) != NULL
6448 && ((total += curr->output_offset - prev->output_offset)
6449 < stub_group_size))
6450 curr = prev;
6451
6452 /* OK, the size from the start of CURR to the end is less
6453 than stub_group_size and thus can be handled by one stub
6454 section. (or the tail section is itself larger than
6455 stub_group_size, in which case we may be toast.) We
6456 should really be keeping track of the total size of stubs
6457 added here, as stubs contribute to the final output
6458 section size. That's a little tricky, and this way will
6459 only break if stubs added make the total size more than
6460 2^25, ie. for the default stub_group_size, if stubs total
6461 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6462 do
6463 {
6464 prev = PREV_SEC (tail);
6465 /* Set up this stub group. */
6466 htab->stub_group[tail->id].link_sec = curr;
6467 }
6468 while (tail != curr && (tail = prev) != NULL);
6469
6470 /* But wait, there's more! Input sections up to stub_group_size
6471 bytes before the stub section can be handled by it too.
6472 Don't do this if we have a really large section after the
6473 stubs, as adding more stubs increases the chance that
6474 branches may not reach into the stub section. */
6475 if (!stubs_always_before_branch && !big_sec)
6476 {
6477 total = 0;
6478 while (prev != NULL
6479 && ((total += tail->output_offset - prev->output_offset)
6480 < stub_group_size))
6481 {
6482 tail = prev;
6483 prev = PREV_SEC (tail);
6484 htab->stub_group[tail->id].link_sec = curr;
6485 }
6486 }
6487 tail = prev;
6488 }
6489 }
6490 while (list-- != htab->input_list);
6491 free (htab->input_list);
6492 #undef PREV_SEC
6493 }
6494
6495 /* Determine and set the size of the stub section for a final link.
6496
6497 The basic idea here is to examine all the relocations looking for
6498 PC-relative calls to a target that is unreachable with a "bl"
6499 instruction. */
6500
6501 bfd_boolean
6502 ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
6503 add_stub_section, layout_sections_again)
6504 bfd *output_bfd;
6505 bfd *stub_bfd;
6506 struct bfd_link_info *info;
6507 bfd_signed_vma group_size;
6508 asection * (*add_stub_section) PARAMS ((const char *, asection *));
6509 void (*layout_sections_again) PARAMS ((void));
6510 {
6511 bfd_size_type stub_group_size;
6512 bfd_boolean stubs_always_before_branch;
6513 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6514
6515 /* Stash our params away. */
6516 htab->stub_bfd = stub_bfd;
6517 htab->add_stub_section = add_stub_section;
6518 htab->layout_sections_again = layout_sections_again;
6519 stubs_always_before_branch = group_size < 0;
6520 if (group_size < 0)
6521 stub_group_size = -group_size;
6522 else
6523 stub_group_size = group_size;
6524 if (stub_group_size == 1)
6525 {
6526 /* Default values. */
6527 if (stubs_always_before_branch)
6528 {
6529 stub_group_size = 0x1e00000;
6530 if (htab->has_14bit_branch)
6531 stub_group_size = 0x7800;
6532 }
6533 else
6534 {
6535 stub_group_size = 0x1c00000;
6536 if (htab->has_14bit_branch)
6537 stub_group_size = 0x7000;
6538 }
6539 }
6540
6541 group_sections (htab, stub_group_size, stubs_always_before_branch);
6542
6543 while (1)
6544 {
6545 bfd *input_bfd;
6546 unsigned int bfd_indx;
6547 asection *stub_sec;
6548 bfd_boolean stub_changed;
6549
6550 htab->stub_iteration += 1;
6551 stub_changed = FALSE;
6552
6553 for (input_bfd = info->input_bfds, bfd_indx = 0;
6554 input_bfd != NULL;
6555 input_bfd = input_bfd->link_next, bfd_indx++)
6556 {
6557 Elf_Internal_Shdr *symtab_hdr;
6558 asection *section;
6559 Elf_Internal_Sym *local_syms = NULL;
6560
6561 /* We'll need the symbol table in a second. */
6562 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6563 if (symtab_hdr->sh_info == 0)
6564 continue;
6565
6566 /* Walk over each section attached to the input bfd. */
6567 for (section = input_bfd->sections;
6568 section != NULL;
6569 section = section->next)
6570 {
6571 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6572
6573 /* If there aren't any relocs, then there's nothing more
6574 to do. */
6575 if ((section->flags & SEC_RELOC) == 0
6576 || section->reloc_count == 0)
6577 continue;
6578
6579 /* If this section is a link-once section that will be
6580 discarded, then don't create any stubs. */
6581 if (section->output_section == NULL
6582 || section->output_section->owner != output_bfd)
6583 continue;
6584
6585 /* Get the relocs. */
6586 internal_relocs
6587 = _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
6588 (Elf_Internal_Rela *) NULL,
6589 info->keep_memory);
6590 if (internal_relocs == NULL)
6591 goto error_ret_free_local;
6592
6593 /* Now examine each relocation. */
6594 irela = internal_relocs;
6595 irelaend = irela + section->reloc_count;
6596 for (; irela < irelaend; irela++)
6597 {
6598 unsigned int r_type, r_indx;
6599 enum ppc_stub_type stub_type;
6600 struct ppc_stub_hash_entry *stub_entry;
6601 asection *sym_sec;
6602 bfd_vma sym_value;
6603 bfd_vma destination;
6604 struct ppc_link_hash_entry *hash;
6605 struct elf_link_hash_entry *h;
6606 Elf_Internal_Sym *sym;
6607 char *stub_name;
6608 const asection *id_sec;
6609
6610 r_type = ELF64_R_TYPE (irela->r_info);
6611 r_indx = ELF64_R_SYM (irela->r_info);
6612
6613 if (r_type >= (unsigned int) R_PPC64_max)
6614 {
6615 bfd_set_error (bfd_error_bad_value);
6616 goto error_ret_free_internal;
6617 }
6618
6619 /* Only look for stubs on branch instructions. */
6620 if (r_type != (unsigned int) R_PPC64_REL24
6621 && r_type != (unsigned int) R_PPC64_REL14
6622 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
6623 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
6624 continue;
6625
6626 /* Now determine the call target, its name, value,
6627 section. */
6628 destination = 0;
6629 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6630 r_indx, input_bfd))
6631 goto error_ret_free_internal;
6632 hash = (struct ppc_link_hash_entry *) h;
6633
6634 if (hash == NULL)
6635 {
6636 /* It's a local symbol. */
6637 sym_value = sym->st_value;
6638 destination = (sym_value + irela->r_addend
6639 + sym_sec->output_offset
6640 + sym_sec->output_section->vma);
6641 }
6642 else
6643 {
6644 /* It's an external symbol. */
6645 sym_value = 0;
6646 if (hash->elf.root.type == bfd_link_hash_defined
6647 || hash->elf.root.type == bfd_link_hash_defweak)
6648 {
6649 sym_value = hash->elf.root.u.def.value;
6650 if (sym_sec->output_section != NULL)
6651 destination = (sym_value + irela->r_addend
6652 + sym_sec->output_offset
6653 + sym_sec->output_section->vma);
6654 }
6655 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6656 ;
6657 else if (hash->elf.root.type == bfd_link_hash_undefined)
6658 ;
6659 else
6660 {
6661 bfd_set_error (bfd_error_bad_value);
6662 goto error_ret_free_internal;
6663 }
6664 }
6665
6666 /* Determine what (if any) linker stub is needed. */
6667 stub_type = ppc_type_of_stub (section, irela, &hash,
6668 destination);
6669 if (stub_type == ppc_stub_none)
6670 continue;
6671
6672 /* __tls_get_addr calls might be eliminated. */
6673 if (stub_type != ppc_stub_plt_call
6674 && hash != NULL
6675 && &hash->elf == htab->tls_get_addr
6676 && section->has_tls_reloc
6677 && irela != internal_relocs)
6678 {
6679 /* Get tls info. */
6680 char *tls_mask;
6681
6682 if (!get_tls_mask (&tls_mask, &local_syms,
6683 irela - 1, input_bfd))
6684 goto error_ret_free_internal;
6685 if (*tls_mask != 0)
6686 continue;
6687 }
6688
6689 /* Support for grouping stub sections. */
6690 id_sec = htab->stub_group[section->id].link_sec;
6691
6692 /* Get the name of this stub. */
6693 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
6694 if (!stub_name)
6695 goto error_ret_free_internal;
6696
6697 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
6698 stub_name, FALSE, FALSE);
6699 if (stub_entry != NULL)
6700 {
6701 /* The proper stub has already been created. */
6702 free (stub_name);
6703 continue;
6704 }
6705
6706 stub_entry = ppc_add_stub (stub_name, section, htab);
6707 if (stub_entry == NULL)
6708 {
6709 free (stub_name);
6710 error_ret_free_internal:
6711 if (elf_section_data (section)->relocs == NULL)
6712 free (internal_relocs);
6713 error_ret_free_local:
6714 if (local_syms != NULL
6715 && (symtab_hdr->contents
6716 != (unsigned char *) local_syms))
6717 free (local_syms);
6718 return FALSE;
6719 }
6720
6721 stub_entry->target_value = sym_value;
6722 stub_entry->target_section = sym_sec;
6723 stub_entry->stub_type = stub_type;
6724 stub_entry->h = hash;
6725 stub_entry->addend = irela->r_addend;
6726 stub_changed = TRUE;
6727 }
6728
6729 /* We're done with the internal relocs, free them. */
6730 if (elf_section_data (section)->relocs != internal_relocs)
6731 free (internal_relocs);
6732 }
6733
6734 if (local_syms != NULL
6735 && symtab_hdr->contents != (unsigned char *) local_syms)
6736 {
6737 if (!info->keep_memory)
6738 free (local_syms);
6739 else
6740 symtab_hdr->contents = (unsigned char *) local_syms;
6741 }
6742 }
6743
6744 if (!stub_changed)
6745 break;
6746
6747 /* OK, we've added some stubs. Find out the new size of the
6748 stub sections. */
6749 for (stub_sec = htab->stub_bfd->sections;
6750 stub_sec != NULL;
6751 stub_sec = stub_sec->next)
6752 {
6753 stub_sec->_raw_size = 0;
6754 stub_sec->_cooked_size = 0;
6755 }
6756 htab->sbrlt->_raw_size = 0;
6757 htab->sbrlt->_cooked_size = 0;
6758
6759 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
6760
6761 /* Ask the linker to do its stuff. */
6762 (*htab->layout_sections_again) ();
6763 }
6764
6765 /* It would be nice to strip .branch_lt from the output if the
6766 section is empty, but it's too late. If we strip sections here,
6767 the dynamic symbol table is corrupted since the section symbol
6768 for the stripped section isn't written. */
6769
6770 return TRUE;
6771 }
6772
6773 /* Called after we have determined section placement. If sections
6774 move, we'll be called again. Provide a value for TOCstart. */
6775
6776 bfd_vma
6777 ppc64_elf_toc (obfd)
6778 bfd *obfd;
6779 {
6780 asection *s;
6781 bfd_vma TOCstart;
6782
6783 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
6784 order. The TOC starts where the first of these sections starts. */
6785 s = bfd_get_section_by_name (obfd, ".got");
6786 if (s == NULL)
6787 s = bfd_get_section_by_name (obfd, ".toc");
6788 if (s == NULL)
6789 s = bfd_get_section_by_name (obfd, ".tocbss");
6790 if (s == NULL)
6791 s = bfd_get_section_by_name (obfd, ".plt");
6792 if (s == NULL)
6793 {
6794 /* This may happen for
6795 o references to TOC base (SYM@toc / TOC[tc0]) without a
6796 .toc directive
6797 o bad linker script
6798 o --gc-sections and empty TOC sections
6799
6800 FIXME: Warn user? */
6801
6802 /* Look for a likely section. We probably won't even be
6803 using TOCstart. */
6804 for (s = obfd->sections; s != NULL; s = s->next)
6805 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
6806 == (SEC_ALLOC | SEC_SMALL_DATA))
6807 break;
6808 if (s == NULL)
6809 for (s = obfd->sections; s != NULL; s = s->next)
6810 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
6811 == (SEC_ALLOC | SEC_SMALL_DATA))
6812 break;
6813 if (s == NULL)
6814 for (s = obfd->sections; s != NULL; s = s->next)
6815 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
6816 break;
6817 if (s == NULL)
6818 for (s = obfd->sections; s != NULL; s = s->next)
6819 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
6820 break;
6821 }
6822
6823 TOCstart = 0;
6824 if (s != NULL)
6825 TOCstart = s->output_section->vma + s->output_offset;
6826
6827 return TOCstart;
6828 }
6829
6830 /* Build all the stubs associated with the current output file.
6831 The stubs are kept in a hash table attached to the main linker
6832 hash table. This function is called via gldelf64ppc_finish. */
6833
6834 bfd_boolean
6835 ppc64_elf_build_stubs (info)
6836 struct bfd_link_info *info;
6837 {
6838 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6839 asection *stub_sec;
6840 bfd_vma plt_r2;
6841 bfd_byte *p;
6842
6843 for (stub_sec = htab->stub_bfd->sections;
6844 stub_sec != NULL;
6845 stub_sec = stub_sec->next)
6846 {
6847 bfd_size_type size;
6848
6849 /* Allocate memory to hold the linker stubs. */
6850 size = stub_sec->_raw_size;
6851 if (size != 0)
6852 {
6853 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
6854 if (stub_sec->contents == NULL)
6855 return FALSE;
6856 }
6857 stub_sec->_cooked_size = 0;
6858 }
6859
6860 if (htab->splt != NULL)
6861 {
6862 unsigned int indx;
6863
6864 /* Build the .glink plt call stub. */
6865 plt_r2 = (htab->splt->output_offset
6866 + htab->splt->output_section->vma
6867 - elf_gp (htab->splt->output_section->owner)
6868 - TOC_BASE_OFF);
6869 p = htab->sglink->contents;
6870 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
6871 while (p < htab->sglink->contents + GLINK_CALL_STUB_SIZE)
6872 {
6873 bfd_put_32 (htab->sglink->owner, NOP, p);
6874 p += 4;
6875 }
6876
6877 /* Build the .glink lazy link call stubs. */
6878 indx = 0;
6879 while (p < htab->sglink->contents + htab->sglink->_raw_size)
6880 {
6881 if (indx < 0x8000)
6882 {
6883 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
6884 p += 4;
6885 }
6886 else
6887 {
6888 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
6889 p += 4;
6890 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
6891 p += 4;
6892 }
6893 bfd_put_32 (htab->sglink->owner,
6894 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
6895 indx++;
6896 p += 4;
6897 }
6898 htab->sglink->_cooked_size = p - htab->sglink->contents;
6899 }
6900
6901 if (htab->sbrlt->_raw_size != 0)
6902 {
6903 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
6904 htab->sbrlt->_raw_size);
6905 if (htab->sbrlt->contents == NULL)
6906 return FALSE;
6907 }
6908
6909 /* Build the stubs as directed by the stub hash table. */
6910 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
6911
6912 for (stub_sec = htab->stub_bfd->sections;
6913 stub_sec != NULL;
6914 stub_sec = stub_sec->next)
6915 {
6916 if (stub_sec->_raw_size != stub_sec->_cooked_size)
6917 break;
6918 }
6919
6920 if (stub_sec != NULL
6921 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
6922 {
6923 htab->stub_error = TRUE;
6924 (*_bfd_error_handler) (_("stubs don't match calculated size"));
6925 }
6926
6927 return !htab->stub_error;
6928 }
6929
6930 /* The RELOCATE_SECTION function is called by the ELF backend linker
6931 to handle the relocations for a section.
6932
6933 The relocs are always passed as Rela structures; if the section
6934 actually uses Rel structures, the r_addend field will always be
6935 zero.
6936
6937 This function is responsible for adjust the section contents as
6938 necessary, and (if using Rela relocs and generating a
6939 relocateable output file) adjusting the reloc addend as
6940 necessary.
6941
6942 This function does not have to worry about setting the reloc
6943 address or the reloc symbol index.
6944
6945 LOCAL_SYMS is a pointer to the swapped in local symbols.
6946
6947 LOCAL_SECTIONS is an array giving the section in the input file
6948 corresponding to the st_shndx field of each local symbol.
6949
6950 The global hash table entry for the global symbols can be found
6951 via elf_sym_hashes (input_bfd).
6952
6953 When generating relocateable output, this function must handle
6954 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6955 going to be the section symbol corresponding to the output
6956 section, which means that the addend must be adjusted
6957 accordingly. */
6958
6959 static bfd_boolean
6960 ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
6961 contents, relocs, local_syms, local_sections)
6962 bfd *output_bfd;
6963 struct bfd_link_info *info;
6964 bfd *input_bfd;
6965 asection *input_section;
6966 bfd_byte *contents;
6967 Elf_Internal_Rela *relocs;
6968 Elf_Internal_Sym *local_syms;
6969 asection **local_sections;
6970 {
6971 struct ppc_link_hash_table *htab;
6972 Elf_Internal_Shdr *symtab_hdr;
6973 struct elf_link_hash_entry **sym_hashes;
6974 Elf_Internal_Rela *rel;
6975 Elf_Internal_Rela *relend;
6976 Elf_Internal_Rela outrel;
6977 bfd_byte *loc;
6978 struct got_entry **local_got_ents;
6979 bfd_vma TOCstart;
6980 bfd_boolean ret = TRUE;
6981 bfd_boolean is_opd;
6982 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
6983 bfd_boolean is_power4 = FALSE;
6984
6985 if (info->relocateable)
6986 return TRUE;
6987
6988 /* Initialize howto table if needed. */
6989 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
6990 ppc_howto_init ();
6991
6992 htab = ppc_hash_table (info);
6993 local_got_ents = elf_local_got_ents (input_bfd);
6994 TOCstart = elf_gp (output_bfd);
6995 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6996 sym_hashes = elf_sym_hashes (input_bfd);
6997 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
6998
6999 rel = relocs;
7000 relend = relocs + input_section->reloc_count;
7001 for (; rel < relend; rel++)
7002 {
7003 enum elf_ppc64_reloc_type r_type;
7004 bfd_vma addend;
7005 bfd_reloc_status_type r;
7006 Elf_Internal_Sym *sym;
7007 asection *sec;
7008 struct elf_link_hash_entry *h;
7009 struct elf_link_hash_entry *fdh;
7010 const char *sym_name;
7011 unsigned long r_symndx;
7012 char tls_mask, tls_gd, tls_type;
7013 bfd_vma relocation;
7014 bfd_boolean unresolved_reloc;
7015 bfd_boolean warned;
7016 long insn;
7017 struct ppc_stub_hash_entry *stub_entry;
7018 bfd_vma max_br_offset;
7019 bfd_vma from;
7020
7021 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
7022 r_symndx = ELF64_R_SYM (rel->r_info);
7023 sym = (Elf_Internal_Sym *) 0;
7024 sec = (asection *) 0;
7025 h = (struct elf_link_hash_entry *) 0;
7026 sym_name = (const char *) 0;
7027 unresolved_reloc = FALSE;
7028 warned = FALSE;
7029
7030 if (r_type == R_PPC64_TOC)
7031 {
7032 /* Relocation value is TOC base. Symbol is ignored. */
7033 relocation = TOCstart + TOC_BASE_OFF;
7034 }
7035 else if (r_symndx < symtab_hdr->sh_info)
7036 {
7037 /* It's a local symbol. */
7038 sym = local_syms + r_symndx;
7039 sec = local_sections[r_symndx];
7040 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7041 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
7042 if (elf_section_data (sec) != NULL)
7043 {
7044 long *opd_sym_adjust;
7045
7046 opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
7047 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
7048 relocation += opd_sym_adjust[sym->st_value / 24];
7049 }
7050 }
7051 else
7052 {
7053 /* It's a global symbol. */
7054 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7055 while (h->root.type == bfd_link_hash_indirect
7056 || h->root.type == bfd_link_hash_warning)
7057 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7058 sym_name = h->root.root.string;
7059 relocation = 0;
7060 if (h->root.type == bfd_link_hash_defined
7061 || h->root.type == bfd_link_hash_defweak)
7062 {
7063 sec = h->root.u.def.section;
7064 if (sec->output_section == NULL)
7065 /* Set a flag that will be cleared later if we find a
7066 relocation value for this symbol. output_section
7067 is typically NULL for symbols satisfied by a shared
7068 library. */
7069 unresolved_reloc = TRUE;
7070 else
7071 relocation = (h->root.u.def.value
7072 + sec->output_section->vma
7073 + sec->output_offset);
7074 }
7075 else if (h->root.type == bfd_link_hash_undefweak)
7076 ;
7077 else if (info->shared
7078 && !info->no_undefined
7079 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
7080 ;
7081 else
7082 {
7083 if (! ((*info->callbacks->undefined_symbol)
7084 (info, h->root.root.string, input_bfd, input_section,
7085 rel->r_offset, (!info->shared
7086 || info->no_undefined
7087 || ELF_ST_VISIBILITY (h->other)))))
7088 return FALSE;
7089 warned = TRUE;
7090 }
7091 }
7092
7093 /* TLS optimizations. Replace instruction sequences and relocs
7094 based on information we collected in tls_optimize. We edit
7095 RELOCS so that --emit-relocs will output something sensible
7096 for the final instruction stream. */
7097 tls_mask = 0;
7098 tls_gd = 0;
7099 if (IS_PPC64_TLS_RELOC (r_type))
7100 {
7101 if (h != NULL)
7102 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7103 else if (local_got_ents != NULL)
7104 {
7105 char *lgot_masks;
7106 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7107 tls_mask = lgot_masks[r_symndx];
7108 }
7109 }
7110
7111 /* Ensure reloc mapping code below stays sane. */
7112 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7113 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7114 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7115 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7116 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7117 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7118 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7119 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7120 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7121 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7122 abort ();
7123 switch (r_type)
7124 {
7125 default:
7126 break;
7127
7128 case R_PPC64_TOC16:
7129 case R_PPC64_TOC16_LO:
7130 case R_PPC64_TOC16_DS:
7131 case R_PPC64_TOC16_LO_DS:
7132 {
7133 /* Check for toc tls entries. */
7134 char *toc_tls;
7135 int retval;
7136
7137 retval = get_tls_mask (&toc_tls, &local_syms, rel, input_bfd);
7138 if (retval == 0)
7139 return FALSE;
7140
7141 if (toc_tls)
7142 {
7143 tls_mask = *toc_tls;
7144 if (r_type == R_PPC64_TOC16_DS
7145 || r_type == R_PPC64_TOC16_LO_DS)
7146 goto toctprel;
7147 else
7148 {
7149 /* If we found a GD reloc pair, then we might be
7150 doing a GD->IE transition. */
7151 if (retval == 2)
7152 {
7153 tls_gd = TLS_TPRELGD;
7154 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7155 goto tls_get_addr_check;
7156 }
7157 else if (retval == 3)
7158 {
7159 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7160 goto tls_get_addr_check;
7161 }
7162 }
7163 }
7164 }
7165 break;
7166
7167 case R_PPC64_GOT_TPREL16_DS:
7168 case R_PPC64_GOT_TPREL16_LO_DS:
7169 toctprel:
7170 if (tls_mask != 0
7171 && (tls_mask & TLS_TPREL) == 0)
7172 {
7173 bfd_vma insn;
7174 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7175 insn &= 31 << 21;
7176 insn |= 0x3c0d0000; /* addis 0,13,0 */
7177 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7178 r_type = R_PPC64_TPREL16_HA;
7179 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7180 }
7181 break;
7182
7183 case R_PPC64_TLS:
7184 if (tls_mask == 0)
7185 {
7186 /* Check for toc tls entries. */
7187 char *toc_tls;
7188
7189 if (!get_tls_mask (&toc_tls, &local_syms, rel, input_bfd))
7190 return FALSE;
7191
7192 if (toc_tls)
7193 tls_mask = *toc_tls;
7194 }
7195 if (tls_mask != 0
7196 && (tls_mask & TLS_TPREL) == 0)
7197 {
7198 bfd_vma insn, rtra;
7199 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7200 if ((insn & ((31 << 26) | (31 << 11)))
7201 == ((31 << 26) | (13 << 11)))
7202 rtra = insn & ((1 << 26) - (1 << 16));
7203 else if ((insn & ((31 << 26) | (31 << 16)))
7204 == ((31 << 26) | (13 << 16)))
7205 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7206 else
7207 abort ();
7208 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7209 /* add -> addi. */
7210 insn = 14 << 26;
7211 else if ((insn & (31 << 1)) == 23 << 1
7212 && ((insn & (31 << 6)) < 14 << 6
7213 || ((insn & (31 << 6)) >= 16 << 6
7214 && (insn & (31 << 6)) < 24 << 6)))
7215 /* load and store indexed -> dform. */
7216 insn = (32 | ((insn >> 6) & 31)) << 26;
7217 else if ((insn & (31 << 1)) == 21 << 1
7218 && (insn & (0x1a << 6)) == 0)
7219 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7220 insn = (((58 | ((insn >> 6) & 4)) << 26)
7221 | ((insn >> 6) & 1));
7222 else if ((insn & (31 << 1)) == 21 << 1
7223 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7224 /* lwax -> lwa. */
7225 insn = (58 << 26) | 2;
7226 else
7227 abort ();
7228 insn |= rtra;
7229 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7230 r_type = R_PPC64_TPREL16_LO;
7231 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7232 /* Was PPC64_TLS which sits on insn boundary, now
7233 PPC64_TPREL16_LO which is at insn+2. */
7234 rel->r_offset += 2;
7235 }
7236 break;
7237
7238 case R_PPC64_GOT_TLSGD16_HI:
7239 case R_PPC64_GOT_TLSGD16_HA:
7240 tls_gd = TLS_TPRELGD;
7241 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7242 goto tls_gdld_hi;
7243 break;
7244
7245 case R_PPC64_GOT_TLSLD16_HI:
7246 case R_PPC64_GOT_TLSLD16_HA:
7247 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7248 {
7249 tls_gdld_hi:
7250 if ((tls_mask & tls_gd) != 0)
7251 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7252 + R_PPC64_GOT_TPREL16_DS);
7253 else
7254 {
7255 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7256 rel->r_offset -= 2;
7257 r_type = R_PPC64_NONE;
7258 }
7259 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7260 }
7261 break;
7262
7263 case R_PPC64_GOT_TLSGD16:
7264 case R_PPC64_GOT_TLSGD16_LO:
7265 tls_gd = TLS_TPRELGD;
7266 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7267 goto tls_get_addr_check;
7268 break;
7269
7270 case R_PPC64_GOT_TLSLD16:
7271 case R_PPC64_GOT_TLSLD16_LO:
7272 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7273 {
7274 tls_get_addr_check:
7275 if (rel + 1 < relend)
7276 {
7277 enum elf_ppc64_reloc_type r_type2;
7278 unsigned long r_symndx2;
7279 struct elf_link_hash_entry *h2;
7280 bfd_vma insn1, insn2, insn3;
7281 bfd_vma offset;
7282
7283 /* The next instruction should be a call to
7284 __tls_get_addr. Peek at the reloc to be sure. */
7285 r_type2
7286 = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel[1].r_info);
7287 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7288 if (r_symndx2 < symtab_hdr->sh_info
7289 || (r_type2 != R_PPC64_REL14
7290 && r_type2 != R_PPC64_REL14_BRTAKEN
7291 && r_type2 != R_PPC64_REL14_BRNTAKEN
7292 && r_type2 != R_PPC64_REL24))
7293 break;
7294
7295 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7296 while (h2->root.type == bfd_link_hash_indirect
7297 || h2->root.type == bfd_link_hash_warning)
7298 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7299 if (h2 == NULL || h2 != htab->tls_get_addr)
7300 break;
7301
7302 /* OK, it checks out. Replace the call. */
7303 offset = rel[1].r_offset;
7304 insn1 = bfd_get_32 (output_bfd,
7305 contents + rel->r_offset - 2);
7306 insn3 = bfd_get_32 (output_bfd,
7307 contents + offset + 4);
7308 if ((tls_mask & tls_gd) != 0)
7309 {
7310 /* IE */
7311 insn1 &= (1 << 26) - (1 << 2);
7312 insn1 |= 58 << 26; /* ld */
7313 insn2 = 0x7c636a14; /* add 3,3,13 */
7314 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7315 if ((tls_mask & TLS_EXPLICIT) == 0)
7316 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7317 + R_PPC64_GOT_TPREL16_DS);
7318 else
7319 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7320 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7321 }
7322 else
7323 {
7324 /* LE */
7325 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7326 insn2 = 0x38630000; /* addi 3,3,0 */
7327 if (tls_gd == 0)
7328 {
7329 /* Was an LD reloc. */
7330 r_symndx = 0;
7331 rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
7332 rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
7333 }
7334 r_type = R_PPC64_TPREL16_HA;
7335 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7336 rel[1].r_info = ELF64_R_INFO (r_symndx,
7337 R_PPC64_TPREL16_LO);
7338 rel[1].r_offset += 2;
7339 }
7340 if (insn3 == NOP
7341 || insn3 == CROR_151515 || insn3 == CROR_313131)
7342 {
7343 insn3 = insn2;
7344 insn2 = NOP;
7345 rel[1].r_offset += 4;
7346 }
7347 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7348 bfd_put_32 (output_bfd, insn2, contents + offset);
7349 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7350 if (tls_gd == 0)
7351 {
7352 /* We changed the symbol on an LD reloc. Start over
7353 in order to get h, sym, sec etc. right. */
7354 rel--;
7355 continue;
7356 }
7357 }
7358 }
7359 break;
7360
7361 case R_PPC64_DTPMOD64:
7362 if (rel + 1 < relend
7363 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7364 && rel[1].r_offset == rel->r_offset + 8)
7365 {
7366 if ((tls_mask & TLS_GD) == 0)
7367 {
7368 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7369 if ((tls_mask & TLS_TPRELGD) != 0)
7370 r_type = R_PPC64_TPREL64;
7371 else
7372 {
7373 bfd_put_64 (output_bfd, (bfd_vma) 1,
7374 contents + rel->r_offset);
7375 r_type = R_PPC64_NONE;
7376 }
7377 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7378 }
7379 }
7380 else
7381 {
7382 if ((tls_mask & TLS_LD) == 0)
7383 {
7384 bfd_put_64 (output_bfd, (bfd_vma) 1,
7385 contents + rel->r_offset);
7386 r_type = R_PPC64_NONE;
7387 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7388 }
7389 }
7390 break;
7391
7392 case R_PPC64_TPREL64:
7393 if ((tls_mask & TLS_TPREL) == 0)
7394 {
7395 r_type = R_PPC64_NONE;
7396 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7397 }
7398 break;
7399 }
7400
7401 /* Handle other relocations that tweak non-addend part of insn. */
7402 insn = 0;
7403 switch (r_type)
7404 {
7405 default:
7406 break;
7407
7408 /* Branch taken prediction relocations. */
7409 case R_PPC64_ADDR14_BRTAKEN:
7410 case R_PPC64_REL14_BRTAKEN:
7411 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7412 /* Fall thru. */
7413
7414 /* Branch not taken prediction relocations. */
7415 case R_PPC64_ADDR14_BRNTAKEN:
7416 case R_PPC64_REL14_BRNTAKEN:
7417 insn |= bfd_get_32 (output_bfd,
7418 contents + rel->r_offset) & ~(0x01 << 21);
7419 if (is_power4)
7420 {
7421 /* Set 'a' bit. This is 0b00010 in BO field for branch
7422 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7423 for branch on CTR insns (BO == 1a00t or 1a01t). */
7424 if ((insn & (0x14 << 21)) == (0x04 << 21))
7425 insn |= 0x02 << 21;
7426 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7427 insn |= 0x08 << 21;
7428 else
7429 break;
7430 }
7431 else
7432 {
7433 from = (rel->r_offset
7434 + input_section->output_offset
7435 + input_section->output_section->vma);
7436
7437 /* Invert 'y' bit if not the default. */
7438 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7439 insn ^= 0x01 << 21;
7440 }
7441
7442 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + rel->r_offset);
7443 break;
7444
7445 case R_PPC64_REL24:
7446 /* A REL24 branching to a linkage function is followed by a
7447 nop. We replace the nop with a ld in order to restore
7448 the TOC base pointer. Only calls to shared objects need
7449 to alter the TOC base. These are recognized by their
7450 need for a PLT entry. */
7451 if (h != NULL
7452 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
7453 && fdh->plt.plist != NULL
7454 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7455 rel, htab)) != NULL)
7456 {
7457 bfd_boolean can_plt_call = 0;
7458
7459 if (rel->r_offset + 8 <= input_section->_cooked_size)
7460 {
7461 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7462 if (insn == NOP
7463 || insn == CROR_151515 || insn == CROR_313131)
7464 {
7465 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
7466 contents + rel->r_offset + 4);
7467 can_plt_call = 1;
7468 }
7469 }
7470
7471 if (!can_plt_call)
7472 {
7473 /* If this is a plain branch rather than a branch
7474 and link, don't require a nop. */
7475 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7476 if ((insn & 1) == 0)
7477 can_plt_call = 1;
7478 }
7479
7480 if (can_plt_call)
7481 {
7482 relocation = (stub_entry->stub_offset
7483 + stub_entry->stub_sec->output_offset
7484 + stub_entry->stub_sec->output_section->vma);
7485 unresolved_reloc = FALSE;
7486 }
7487 }
7488
7489 if (h != NULL
7490 && h->root.type == bfd_link_hash_undefweak
7491 && relocation == 0
7492 && rel->r_addend == 0)
7493 {
7494 /* Tweak calls to undefined weak functions to point at a
7495 blr. We can thus call a weak function without first
7496 checking whether the function is defined. We have a
7497 blr at the end of .sfpr. */
7498 BFD_ASSERT (htab->sfpr->_raw_size != 0);
7499 relocation = (htab->sfpr->_raw_size - 4
7500 + htab->sfpr->output_offset
7501 + htab->sfpr->output_section->vma);
7502 from = (rel->r_offset
7503 + input_section->output_offset
7504 + input_section->output_section->vma);
7505
7506 /* But let's not be silly about it. If the blr isn't in
7507 reach, just go to the next instruction. */
7508 if (relocation - from + (1 << 25) >= (1 << 26)
7509 || htab->sfpr->_raw_size == 0)
7510 relocation = from + 4;
7511 }
7512 break;
7513 }
7514
7515 /* Set `addend'. */
7516 tls_type = 0;
7517 addend = rel->r_addend;
7518 switch (r_type)
7519 {
7520 default:
7521 (*_bfd_error_handler)
7522 (_("%s: unknown relocation type %d for symbol %s"),
7523 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
7524
7525 bfd_set_error (bfd_error_bad_value);
7526 ret = FALSE;
7527 continue;
7528
7529 case R_PPC64_NONE:
7530 case R_PPC64_TLS:
7531 case R_PPC64_GNU_VTINHERIT:
7532 case R_PPC64_GNU_VTENTRY:
7533 continue;
7534
7535 /* GOT16 relocations. Like an ADDR16 using the symbol's
7536 address in the GOT as relocation value instead of the
7537 symbol's value itself. Also, create a GOT entry for the
7538 symbol and put the symbol value there. */
7539 case R_PPC64_GOT_TLSGD16:
7540 case R_PPC64_GOT_TLSGD16_LO:
7541 case R_PPC64_GOT_TLSGD16_HI:
7542 case R_PPC64_GOT_TLSGD16_HA:
7543 tls_type = TLS_TLS | TLS_GD;
7544 goto dogot;
7545
7546 case R_PPC64_GOT_TLSLD16:
7547 case R_PPC64_GOT_TLSLD16_LO:
7548 case R_PPC64_GOT_TLSLD16_HI:
7549 case R_PPC64_GOT_TLSLD16_HA:
7550 tls_type = TLS_TLS | TLS_LD;
7551 goto dogot;
7552
7553 case R_PPC64_GOT_TPREL16_DS:
7554 case R_PPC64_GOT_TPREL16_LO_DS:
7555 case R_PPC64_GOT_TPREL16_HI:
7556 case R_PPC64_GOT_TPREL16_HA:
7557 tls_type = TLS_TLS | TLS_TPREL;
7558 goto dogot;
7559
7560 case R_PPC64_GOT_DTPREL16_DS:
7561 case R_PPC64_GOT_DTPREL16_LO_DS:
7562 case R_PPC64_GOT_DTPREL16_HI:
7563 case R_PPC64_GOT_DTPREL16_HA:
7564 tls_type = TLS_TLS | TLS_DTPREL;
7565 goto dogot;
7566
7567 case R_PPC64_GOT16:
7568 case R_PPC64_GOT16_LO:
7569 case R_PPC64_GOT16_HI:
7570 case R_PPC64_GOT16_HA:
7571 case R_PPC64_GOT16_DS:
7572 case R_PPC64_GOT16_LO_DS:
7573 dogot:
7574 {
7575 /* Relocation is to the entry for this symbol in the global
7576 offset table. */
7577 bfd_vma *offp;
7578 bfd_vma off;
7579 unsigned long indx = 0;
7580
7581 if (htab->sgot == NULL)
7582 abort ();
7583
7584 if (tls_type == (TLS_TLS | TLS_LD)
7585 && (h == NULL
7586 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
7587 offp = &htab->tlsld_got.offset;
7588 else
7589 {
7590 struct got_entry *ent;
7591
7592 if (h != NULL)
7593 {
7594 bfd_boolean dyn = htab->elf.dynamic_sections_created;
7595 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7596 || (info->shared
7597 && (info->symbolic
7598 || h->dynindx == -1
7599 || (h->elf_link_hash_flags
7600 & ELF_LINK_FORCED_LOCAL))
7601 && (h->elf_link_hash_flags
7602 & ELF_LINK_HASH_DEF_REGULAR)))
7603 /* This is actually a static link, or it is a
7604 -Bsymbolic link and the symbol is defined
7605 locally, or the symbol was forced to be local
7606 because of a version file. */
7607 ;
7608 else
7609 {
7610 indx = h->dynindx;
7611 unresolved_reloc = FALSE;
7612 }
7613 ent = h->got.glist;
7614 }
7615 else
7616 {
7617 if (local_got_ents == NULL)
7618 abort ();
7619 ent = local_got_ents[r_symndx];
7620 }
7621
7622 for (; ent != NULL; ent = ent->next)
7623 if (ent->addend == rel->r_addend
7624 && ent->tls_type == tls_type)
7625 break;
7626 if (ent == NULL)
7627 abort ();
7628 offp = &ent->got.offset;
7629 }
7630
7631 /* The offset must always be a multiple of 8. We use the
7632 least significant bit to record whether we have already
7633 processed this entry. */
7634 off = *offp;
7635 if ((off & 1) != 0)
7636 off &= ~1;
7637 else
7638 {
7639 /* Generate relocs for the dynamic linker, except in
7640 the case of TLSLD where we'll use one entry per
7641 module. */
7642 *offp = off | 1;
7643 if (info->shared || indx != 0)
7644 {
7645 outrel.r_offset = (htab->sgot->output_section->vma
7646 + htab->sgot->output_offset
7647 + off);
7648 if (tls_type & (TLS_LD | TLS_GD))
7649 {
7650 outrel.r_addend = 0;
7651 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
7652 if (tls_type == (TLS_TLS | TLS_GD))
7653 {
7654 loc = htab->srelgot->contents;
7655 loc += (htab->srelgot->reloc_count++
7656 * sizeof (Elf64_External_Rela));
7657 bfd_elf64_swap_reloca_out (output_bfd,
7658 &outrel, loc);
7659 outrel.r_offset += 8;
7660 outrel.r_info
7661 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
7662 }
7663 }
7664 else if (tls_type == (TLS_TLS | TLS_DTPREL))
7665 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
7666 else if (tls_type == (TLS_TLS | TLS_TPREL))
7667 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
7668 else if (indx == 0)
7669 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
7670 else
7671 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
7672 outrel.r_addend = rel->r_addend;
7673 if (indx == 0)
7674 {
7675 outrel.r_addend += relocation;
7676 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7677 outrel.r_addend -= htab->tls_sec->vma;
7678 }
7679 loc = htab->srelgot->contents;
7680 loc += (htab->srelgot->reloc_count++
7681 * sizeof (Elf64_External_Rela));
7682 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
7683 }
7684
7685 /* Init the .got section contents if we're not
7686 emitting a reloc. */
7687 else
7688 {
7689 relocation += rel->r_addend;
7690 if (tls_type == (TLS_TLS | TLS_LD))
7691 relocation = 1;
7692 else if (tls_type != 0)
7693 {
7694 relocation -= htab->tls_sec->vma + DTP_OFFSET;
7695 if (tls_type == (TLS_TLS | TLS_TPREL))
7696 relocation += DTP_OFFSET - TP_OFFSET;
7697
7698 if (tls_type == (TLS_TLS | TLS_GD))
7699 {
7700 bfd_put_64 (output_bfd, relocation,
7701 htab->sgot->contents + off + 8);
7702 relocation = 1;
7703 }
7704 }
7705
7706 bfd_put_64 (output_bfd, relocation,
7707 htab->sgot->contents + off);
7708 }
7709 }
7710
7711 if (off >= (bfd_vma) -2)
7712 abort ();
7713
7714 relocation = htab->sgot->output_offset + off;
7715
7716 /* TOC base (r2) is TOC start plus 0x8000. */
7717 addend = - TOC_BASE_OFF;
7718 }
7719 break;
7720
7721 case R_PPC64_PLT16_HA:
7722 case R_PPC64_PLT16_HI:
7723 case R_PPC64_PLT16_LO:
7724 case R_PPC64_PLT32:
7725 case R_PPC64_PLT64:
7726 /* Relocation is to the entry for this symbol in the
7727 procedure linkage table. */
7728
7729 /* Resolve a PLT reloc against a local symbol directly,
7730 without using the procedure linkage table. */
7731 if (h == NULL)
7732 break;
7733
7734 /* It's possible that we didn't make a PLT entry for this
7735 symbol. This happens when statically linking PIC code,
7736 or when using -Bsymbolic. Go find a match if there is a
7737 PLT entry. */
7738 if (htab->splt != NULL)
7739 {
7740 struct plt_entry *ent;
7741 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7742 if (ent->addend == rel->r_addend
7743 && ent->plt.offset != (bfd_vma) -1)
7744 {
7745 relocation = (htab->splt->output_section->vma
7746 + htab->splt->output_offset
7747 + ent->plt.offset);
7748 unresolved_reloc = FALSE;
7749 }
7750 }
7751 break;
7752
7753 /* TOC16 relocs. We want the offset relative to the TOC base,
7754 which is the address of the start of the TOC plus 0x8000.
7755 The TOC consists of sections .got, .toc, .tocbss, and .plt,
7756 in this order. */
7757 case R_PPC64_TOC16:
7758 case R_PPC64_TOC16_LO:
7759 case R_PPC64_TOC16_HI:
7760 case R_PPC64_TOC16_DS:
7761 case R_PPC64_TOC16_LO_DS:
7762 case R_PPC64_TOC16_HA:
7763 addend -= TOCstart + TOC_BASE_OFF;
7764 break;
7765
7766 /* Relocate against the beginning of the section. */
7767 case R_PPC64_SECTOFF:
7768 case R_PPC64_SECTOFF_LO:
7769 case R_PPC64_SECTOFF_HI:
7770 case R_PPC64_SECTOFF_DS:
7771 case R_PPC64_SECTOFF_LO_DS:
7772 case R_PPC64_SECTOFF_HA:
7773 if (sec != (asection *) 0)
7774 addend -= sec->output_section->vma;
7775 break;
7776
7777 case R_PPC64_REL14:
7778 case R_PPC64_REL14_BRNTAKEN:
7779 case R_PPC64_REL14_BRTAKEN:
7780 case R_PPC64_REL24:
7781 break;
7782
7783 case R_PPC64_TPREL16:
7784 case R_PPC64_TPREL16_LO:
7785 case R_PPC64_TPREL16_HI:
7786 case R_PPC64_TPREL16_HA:
7787 case R_PPC64_TPREL16_DS:
7788 case R_PPC64_TPREL16_LO_DS:
7789 case R_PPC64_TPREL16_HIGHER:
7790 case R_PPC64_TPREL16_HIGHERA:
7791 case R_PPC64_TPREL16_HIGHEST:
7792 case R_PPC64_TPREL16_HIGHESTA:
7793 addend -= htab->tls_sec->vma + TP_OFFSET;
7794 if (info->shared)
7795 /* The TPREL16 relocs shouldn't really be used in shared
7796 libs as they will result in DT_TEXTREL being set, but
7797 support them anyway. */
7798 goto dodyn;
7799 break;
7800
7801 case R_PPC64_DTPREL16:
7802 case R_PPC64_DTPREL16_LO:
7803 case R_PPC64_DTPREL16_HI:
7804 case R_PPC64_DTPREL16_HA:
7805 case R_PPC64_DTPREL16_DS:
7806 case R_PPC64_DTPREL16_LO_DS:
7807 case R_PPC64_DTPREL16_HIGHER:
7808 case R_PPC64_DTPREL16_HIGHERA:
7809 case R_PPC64_DTPREL16_HIGHEST:
7810 case R_PPC64_DTPREL16_HIGHESTA:
7811 addend -= htab->tls_sec->vma + DTP_OFFSET;
7812 break;
7813
7814 case R_PPC64_DTPMOD64:
7815 relocation = 1;
7816 addend = 0;
7817 goto dodyn;
7818
7819 case R_PPC64_TPREL64:
7820 addend -= htab->tls_sec->vma + TP_OFFSET;
7821 goto dodyn;
7822
7823 case R_PPC64_DTPREL64:
7824 addend -= htab->tls_sec->vma + DTP_OFFSET;
7825 /* Fall thru */
7826
7827 /* Relocations that may need to be propagated if this is a
7828 dynamic object. */
7829 case R_PPC64_REL30:
7830 case R_PPC64_REL32:
7831 case R_PPC64_REL64:
7832 case R_PPC64_ADDR14:
7833 case R_PPC64_ADDR14_BRNTAKEN:
7834 case R_PPC64_ADDR14_BRTAKEN:
7835 case R_PPC64_ADDR16:
7836 case R_PPC64_ADDR16_DS:
7837 case R_PPC64_ADDR16_HA:
7838 case R_PPC64_ADDR16_HI:
7839 case R_PPC64_ADDR16_HIGHER:
7840 case R_PPC64_ADDR16_HIGHERA:
7841 case R_PPC64_ADDR16_HIGHEST:
7842 case R_PPC64_ADDR16_HIGHESTA:
7843 case R_PPC64_ADDR16_LO:
7844 case R_PPC64_ADDR16_LO_DS:
7845 case R_PPC64_ADDR24:
7846 case R_PPC64_ADDR32:
7847 case R_PPC64_ADDR64:
7848 case R_PPC64_UADDR16:
7849 case R_PPC64_UADDR32:
7850 case R_PPC64_UADDR64:
7851 /* r_symndx will be zero only for relocs against symbols
7852 from removed linkonce sections, or sections discarded by
7853 a linker script. */
7854 dodyn:
7855 if (r_symndx == 0)
7856 break;
7857 /* Fall thru. */
7858
7859 case R_PPC64_TOC:
7860 if ((input_section->flags & SEC_ALLOC) == 0)
7861 break;
7862
7863 if (NO_OPD_RELOCS && is_opd)
7864 break;
7865
7866 if ((info->shared
7867 && (MUST_BE_DYN_RELOC (r_type)
7868 || (h != NULL
7869 && h->dynindx != -1
7870 && (! info->symbolic
7871 || (h->elf_link_hash_flags
7872 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
7873 || (ELIMINATE_COPY_RELOCS
7874 && !info->shared
7875 && h != NULL
7876 && h->dynindx != -1
7877 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
7878 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
7879 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
7880 {
7881 Elf_Internal_Rela outrel;
7882 bfd_boolean skip, relocate;
7883 asection *sreloc;
7884 bfd_byte *loc;
7885
7886 /* When generating a dynamic object, these relocations
7887 are copied into the output file to be resolved at run
7888 time. */
7889
7890 skip = FALSE;
7891 relocate = FALSE;
7892
7893 outrel.r_offset =
7894 _bfd_elf_section_offset (output_bfd, info, input_section,
7895 rel->r_offset);
7896 if (outrel.r_offset == (bfd_vma) -1)
7897 skip = TRUE;
7898 else if (outrel.r_offset == (bfd_vma) -2)
7899 skip = TRUE, relocate = TRUE;
7900 outrel.r_offset += (input_section->output_section->vma
7901 + input_section->output_offset);
7902 outrel.r_addend = rel->r_addend;
7903
7904 if (skip)
7905 memset (&outrel, 0, sizeof outrel);
7906 else if (h != NULL
7907 && h->dynindx != -1
7908 && !is_opd
7909 && (!MUST_BE_DYN_RELOC (r_type)
7910 || !info->shared
7911 || !info->symbolic
7912 || (h->elf_link_hash_flags
7913 & ELF_LINK_HASH_DEF_REGULAR) == 0))
7914 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
7915 else
7916 {
7917 /* This symbol is local, or marked to become local,
7918 or this is an opd section reloc which must point
7919 at a local function. */
7920 outrel.r_addend += relocation;
7921 /* ??? why? */
7922 relocate = TRUE;
7923 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
7924 {
7925 if (is_opd && h != NULL)
7926 {
7927 /* Lie about opd entries. This case occurs
7928 when building shared libraries and we
7929 reference a function in another shared
7930 lib. The same thing happens for a weak
7931 definition in an application that's
7932 overridden by a strong definition in a
7933 shared lib. (I believe this is a generic
7934 bug in binutils handling of weak syms.)
7935 In these cases we won't use the opd
7936 entry in this lib. */
7937 unresolved_reloc = FALSE;
7938 }
7939 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7940 }
7941 else
7942 {
7943 long indx = 0;
7944
7945 if (bfd_is_abs_section (sec))
7946 ;
7947 else if (sec == NULL || sec->owner == NULL)
7948 {
7949 bfd_set_error (bfd_error_bad_value);
7950 return FALSE;
7951 }
7952 else
7953 {
7954 asection *osec;
7955
7956 osec = sec->output_section;
7957 indx = elf_section_data (osec)->dynindx;
7958
7959 /* We are turning this relocation into one
7960 against a section symbol, so subtract out
7961 the output section's address but not the
7962 offset of the input section in the output
7963 section. */
7964 outrel.r_addend -= osec->vma;
7965 }
7966
7967 outrel.r_info = ELF64_R_INFO (indx, r_type);
7968 }
7969 }
7970
7971 sreloc = elf_section_data (input_section)->sreloc;
7972 if (sreloc == NULL)
7973 abort ();
7974
7975 loc = sreloc->contents;
7976 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
7977 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
7978
7979 /* If this reloc is against an external symbol, it will
7980 be computed at runtime, so there's no need to do
7981 anything now. */
7982 if (! relocate)
7983 continue;
7984 }
7985 break;
7986
7987 case R_PPC64_COPY:
7988 case R_PPC64_GLOB_DAT:
7989 case R_PPC64_JMP_SLOT:
7990 case R_PPC64_RELATIVE:
7991 /* We shouldn't ever see these dynamic relocs in relocatable
7992 files. */
7993 /* Fall through. */
7994
7995 case R_PPC64_PLTGOT16:
7996 case R_PPC64_PLTGOT16_DS:
7997 case R_PPC64_PLTGOT16_HA:
7998 case R_PPC64_PLTGOT16_HI:
7999 case R_PPC64_PLTGOT16_LO:
8000 case R_PPC64_PLTGOT16_LO_DS:
8001 case R_PPC64_PLTREL32:
8002 case R_PPC64_PLTREL64:
8003 /* These ones haven't been implemented yet. */
8004
8005 (*_bfd_error_handler)
8006 (_("%s: relocation %s is not supported for symbol %s."),
8007 bfd_archive_filename (input_bfd),
8008 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
8009
8010 bfd_set_error (bfd_error_invalid_operation);
8011 ret = FALSE;
8012 continue;
8013 }
8014
8015 /* Do any further special processing. */
8016 switch (r_type)
8017 {
8018 default:
8019 break;
8020
8021 case R_PPC64_ADDR16_HA:
8022 case R_PPC64_ADDR16_HIGHERA:
8023 case R_PPC64_ADDR16_HIGHESTA:
8024 case R_PPC64_GOT16_HA:
8025 case R_PPC64_PLTGOT16_HA:
8026 case R_PPC64_PLT16_HA:
8027 case R_PPC64_TOC16_HA:
8028 case R_PPC64_SECTOFF_HA:
8029 case R_PPC64_TPREL16_HA:
8030 case R_PPC64_DTPREL16_HA:
8031 case R_PPC64_GOT_TLSGD16_HA:
8032 case R_PPC64_GOT_TLSLD16_HA:
8033 case R_PPC64_GOT_TPREL16_HA:
8034 case R_PPC64_GOT_DTPREL16_HA:
8035 case R_PPC64_TPREL16_HIGHER:
8036 case R_PPC64_TPREL16_HIGHERA:
8037 case R_PPC64_TPREL16_HIGHEST:
8038 case R_PPC64_TPREL16_HIGHESTA:
8039 case R_PPC64_DTPREL16_HIGHER:
8040 case R_PPC64_DTPREL16_HIGHERA:
8041 case R_PPC64_DTPREL16_HIGHEST:
8042 case R_PPC64_DTPREL16_HIGHESTA:
8043 /* It's just possible that this symbol is a weak symbol
8044 that's not actually defined anywhere. In that case,
8045 'sec' would be NULL, and we should leave the symbol
8046 alone (it will be set to zero elsewhere in the link). */
8047 if (sec != NULL)
8048 /* Add 0x10000 if sign bit in 0:15 is set.
8049 Bits 0:15 are not used. */
8050 addend += 0x8000;
8051 break;
8052
8053 case R_PPC64_ADDR16_DS:
8054 case R_PPC64_ADDR16_LO_DS:
8055 case R_PPC64_GOT16_DS:
8056 case R_PPC64_GOT16_LO_DS:
8057 case R_PPC64_PLT16_LO_DS:
8058 case R_PPC64_SECTOFF_DS:
8059 case R_PPC64_SECTOFF_LO_DS:
8060 case R_PPC64_TOC16_DS:
8061 case R_PPC64_TOC16_LO_DS:
8062 case R_PPC64_PLTGOT16_DS:
8063 case R_PPC64_PLTGOT16_LO_DS:
8064 case R_PPC64_GOT_TPREL16_DS:
8065 case R_PPC64_GOT_TPREL16_LO_DS:
8066 case R_PPC64_GOT_DTPREL16_DS:
8067 case R_PPC64_GOT_DTPREL16_LO_DS:
8068 case R_PPC64_TPREL16_DS:
8069 case R_PPC64_TPREL16_LO_DS:
8070 case R_PPC64_DTPREL16_DS:
8071 case R_PPC64_DTPREL16_LO_DS:
8072 if (((relocation + addend) & 3) != 0)
8073 {
8074 (*_bfd_error_handler)
8075 (_("%s: error: relocation %s not a multiple of 4"),
8076 bfd_archive_filename (input_bfd),
8077 ppc64_elf_howto_table[(int) r_type]->name);
8078 bfd_set_error (bfd_error_bad_value);
8079 ret = FALSE;
8080 continue;
8081 }
8082 break;
8083
8084 case R_PPC64_REL14:
8085 case R_PPC64_REL14_BRNTAKEN:
8086 case R_PPC64_REL14_BRTAKEN:
8087 max_br_offset = 1 << 15;
8088 goto branch_check;
8089
8090 case R_PPC64_REL24:
8091 max_br_offset = 1 << 25;
8092
8093 branch_check:
8094 /* If the branch is out of reach, then redirect the
8095 call to the local stub for this function. */
8096 from = (rel->r_offset
8097 + input_section->output_offset
8098 + input_section->output_section->vma);
8099 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
8100 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8101 rel, htab)) != NULL)
8102 {
8103 /* Munge up the value and addend so that we call the stub
8104 rather than the procedure directly. */
8105 relocation = (stub_entry->stub_offset
8106 + stub_entry->stub_sec->output_offset
8107 + stub_entry->stub_sec->output_section->vma);
8108 addend = 0;
8109 }
8110 break;
8111 }
8112
8113 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8114 because such sections are not SEC_ALLOC and thus ld.so will
8115 not process them. */
8116 if (unresolved_reloc
8117 && !((input_section->flags & SEC_DEBUGGING) != 0
8118 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8119 {
8120 (*_bfd_error_handler)
8121 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8122 bfd_archive_filename (input_bfd),
8123 bfd_get_section_name (input_bfd, input_section),
8124 (long) rel->r_offset,
8125 ppc64_elf_howto_table[(int) r_type]->name,
8126 h->root.root.string);
8127 ret = FALSE;
8128 }
8129
8130 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8131 input_bfd,
8132 input_section,
8133 contents,
8134 rel->r_offset,
8135 relocation,
8136 addend);
8137
8138 if (r != bfd_reloc_ok)
8139 {
8140 if (sym_name == NULL)
8141 sym_name = "(null)";
8142 if (r == bfd_reloc_overflow)
8143 {
8144 if (warned)
8145 continue;
8146 if (h != NULL
8147 && h->root.type == bfd_link_hash_undefweak
8148 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
8149 {
8150 /* Assume this is a call protected by other code that
8151 detects the symbol is undefined. If this is the case,
8152 we can safely ignore the overflow. If not, the
8153 program is hosed anyway, and a little warning isn't
8154 going to help. */
8155
8156 continue;
8157 }
8158
8159 if (!((*info->callbacks->reloc_overflow)
8160 (info, sym_name, ppc64_elf_howto_table[(int) r_type]->name,
8161 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8162 return FALSE;
8163 }
8164 else
8165 {
8166 (*_bfd_error_handler)
8167 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8168 bfd_archive_filename (input_bfd),
8169 bfd_get_section_name (input_bfd, input_section),
8170 (long) rel->r_offset,
8171 ppc64_elf_howto_table[(int) r_type]->name,
8172 sym_name,
8173 (int) r);
8174 ret = FALSE;
8175 }
8176 }
8177 }
8178
8179 return ret;
8180 }
8181
8182 /* Finish up dynamic symbol handling. We set the contents of various
8183 dynamic sections here. */
8184
8185 static bfd_boolean
8186 ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
8187 bfd *output_bfd;
8188 struct bfd_link_info *info;
8189 struct elf_link_hash_entry *h;
8190 Elf_Internal_Sym *sym;
8191 {
8192 struct ppc_link_hash_table *htab;
8193 bfd *dynobj;
8194
8195 htab = ppc_hash_table (info);
8196 dynobj = htab->elf.dynobj;
8197
8198 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8199 {
8200 struct plt_entry *ent;
8201 Elf_Internal_Rela rela;
8202 bfd_byte *loc;
8203
8204 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8205 if (ent->plt.offset != (bfd_vma) -1)
8206 {
8207 /* This symbol has an entry in the procedure linkage
8208 table. Set it up. */
8209
8210 if (htab->splt == NULL
8211 || htab->srelplt == NULL
8212 || htab->sglink == NULL)
8213 abort ();
8214
8215 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8216 fill in the PLT entry. */
8217 rela.r_offset = (htab->splt->output_section->vma
8218 + htab->splt->output_offset
8219 + ent->plt.offset);
8220 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8221 rela.r_addend = ent->addend;
8222
8223 loc = htab->srelplt->contents;
8224 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8225 * sizeof (Elf64_External_Rela));
8226 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8227 }
8228 }
8229
8230 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8231 {
8232 Elf_Internal_Rela rela;
8233 bfd_byte *loc;
8234
8235 /* This symbol needs a copy reloc. Set it up. */
8236
8237 if (h->dynindx == -1
8238 || (h->root.type != bfd_link_hash_defined
8239 && h->root.type != bfd_link_hash_defweak)
8240 || htab->srelbss == NULL)
8241 abort ();
8242
8243 rela.r_offset = (h->root.u.def.value
8244 + h->root.u.def.section->output_section->vma
8245 + h->root.u.def.section->output_offset);
8246 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8247 rela.r_addend = 0;
8248 loc = htab->srelbss->contents;
8249 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
8250 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8251 }
8252
8253 /* Mark some specially defined symbols as absolute. */
8254 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8255 sym->st_shndx = SHN_ABS;
8256
8257 return TRUE;
8258 }
8259
8260 /* Used to decide how to sort relocs in an optimal manner for the
8261 dynamic linker, before writing them out. */
8262
8263 static enum elf_reloc_type_class
8264 ppc64_elf_reloc_type_class (rela)
8265 const Elf_Internal_Rela *rela;
8266 {
8267 enum elf_ppc64_reloc_type r_type;
8268
8269 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rela->r_info);
8270 switch (r_type)
8271 {
8272 case R_PPC64_RELATIVE:
8273 return reloc_class_relative;
8274 case R_PPC64_JMP_SLOT:
8275 return reloc_class_plt;
8276 case R_PPC64_COPY:
8277 return reloc_class_copy;
8278 default:
8279 return reloc_class_normal;
8280 }
8281 }
8282
8283 /* Finish up the dynamic sections. */
8284
8285 static bfd_boolean
8286 ppc64_elf_finish_dynamic_sections (output_bfd, info)
8287 bfd *output_bfd;
8288 struct bfd_link_info *info;
8289 {
8290 struct ppc_link_hash_table *htab;
8291 bfd *dynobj;
8292 asection *sdyn;
8293
8294 htab = ppc_hash_table (info);
8295 dynobj = htab->elf.dynobj;
8296 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8297
8298 if (htab->elf.dynamic_sections_created)
8299 {
8300 Elf64_External_Dyn *dyncon, *dynconend;
8301
8302 if (sdyn == NULL || htab->sgot == NULL)
8303 abort ();
8304
8305 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8306 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
8307 for (; dyncon < dynconend; dyncon++)
8308 {
8309 Elf_Internal_Dyn dyn;
8310 asection *s;
8311
8312 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8313
8314 switch (dyn.d_tag)
8315 {
8316 default:
8317 continue;
8318
8319 case DT_PPC64_GLINK:
8320 s = htab->sglink;
8321 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8322 break;
8323
8324 case DT_PPC64_OPD:
8325 s = bfd_get_section_by_name (output_bfd, ".opd");
8326 if (s == NULL)
8327 continue;
8328 dyn.d_un.d_ptr = s->vma;
8329 break;
8330
8331 case DT_PPC64_OPDSZ:
8332 s = bfd_get_section_by_name (output_bfd, ".opd");
8333 if (s == NULL)
8334 continue;
8335 dyn.d_un.d_val = s->_raw_size;
8336 break;
8337
8338 case DT_PLTGOT:
8339 s = htab->splt;
8340 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8341 break;
8342
8343 case DT_JMPREL:
8344 s = htab->srelplt;
8345 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8346 break;
8347
8348 case DT_PLTRELSZ:
8349 dyn.d_un.d_val = htab->srelplt->_raw_size;
8350 break;
8351
8352 case DT_RELASZ:
8353 /* Don't count procedure linkage table relocs in the
8354 overall reloc count. */
8355 s = htab->srelplt;
8356 if (s == NULL)
8357 continue;
8358 dyn.d_un.d_val -= s->_raw_size;
8359 break;
8360
8361 case DT_RELA:
8362 /* We may not be using the standard ELF linker script.
8363 If .rela.plt is the first .rela section, we adjust
8364 DT_RELA to not include it. */
8365 s = htab->srelplt;
8366 if (s == NULL)
8367 continue;
8368 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8369 continue;
8370 dyn.d_un.d_ptr += s->_raw_size;
8371 break;
8372 }
8373
8374 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8375 }
8376 }
8377
8378 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
8379 {
8380 /* Fill in the first entry in the global offset table.
8381 We use it to hold the link-time TOCbase. */
8382 bfd_put_64 (output_bfd,
8383 elf_gp (output_bfd) + TOC_BASE_OFF,
8384 htab->sgot->contents);
8385
8386 /* Set .got entry size. */
8387 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
8388 }
8389
8390 if (htab->splt != NULL && htab->splt->_raw_size != 0)
8391 {
8392 /* Set .plt entry size. */
8393 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
8394 = PLT_ENTRY_SIZE;
8395 }
8396
8397 return TRUE;
8398 }
8399
8400 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
8401 #define TARGET_LITTLE_NAME "elf64-powerpcle"
8402 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
8403 #define TARGET_BIG_NAME "elf64-powerpc"
8404 #define ELF_ARCH bfd_arch_powerpc
8405 #define ELF_MACHINE_CODE EM_PPC64
8406 #define ELF_MAXPAGESIZE 0x10000
8407 #define elf_info_to_howto ppc64_elf_info_to_howto
8408
8409 #ifdef EM_CYGNUS_POWERPC
8410 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8411 #endif
8412
8413 #ifdef EM_PPC_OLD
8414 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8415 #endif
8416
8417 #define elf_backend_want_got_sym 0
8418 #define elf_backend_want_plt_sym 0
8419 #define elf_backend_plt_alignment 3
8420 #define elf_backend_plt_not_loaded 1
8421 #define elf_backend_got_symbol_offset 0
8422 #define elf_backend_got_header_size 8
8423 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
8424 #define elf_backend_can_gc_sections 1
8425 #define elf_backend_can_refcount 1
8426 #define elf_backend_rela_normal 1
8427
8428 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
8429 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
8430 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
8431 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
8432 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
8433
8434 #define elf_backend_object_p ppc64_elf_object_p
8435 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
8436 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
8437 #define elf_backend_check_relocs ppc64_elf_check_relocs
8438 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
8439 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
8440 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
8441 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
8442 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
8443 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
8444 #define elf_backend_relocate_section ppc64_elf_relocate_section
8445 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
8446 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
8447 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
8448
8449 #include "elf64-target.h"