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* elf32-ppc.c (ppc_elf_relocate_section): Remove unnecessary test.
[deliverable/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 /* Section name for stubs is the associated section name plus this
2545 string. */
2546 #define STUB_SUFFIX ".stub"
2547
2548 /* Linker stubs.
2549 ppc_stub_long_branch:
2550 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2551 destination, but a 24 bit branch in a stub section will reach.
2552 . b dest
2553
2554 ppc_stub_plt_branch:
2555 Similar to the above, but a 24 bit branch in the stub section won't
2556 reach its destination.
2557 . addis %r12,%r2,xxx@toc@ha
2558 . ld %r11,xxx@toc@l(%r12)
2559 . mtctr %r11
2560 . bctr
2561
2562 ppc_stub_plt_call:
2563 Used to call a function in a shared library.
2564 . addis %r12,%r2,xxx@toc@ha
2565 . std %r2,40(%r1)
2566 . ld %r11,xxx+0@toc@l(%r12)
2567 . ld %r2,xxx+8@toc@l(%r12)
2568 . mtctr %r11
2569 . ld %r11,xxx+16@toc@l(%r12)
2570 . bctr
2571 */
2572
2573 enum ppc_stub_type {
2574 ppc_stub_none,
2575 ppc_stub_long_branch,
2576 ppc_stub_plt_branch,
2577 ppc_stub_plt_call
2578 };
2579
2580 struct ppc_stub_hash_entry {
2581
2582 /* Base hash table entry structure. */
2583 struct bfd_hash_entry root;
2584
2585 /* The stub section. */
2586 asection *stub_sec;
2587
2588 /* Offset within stub_sec of the beginning of this stub. */
2589 bfd_vma stub_offset;
2590
2591 /* Given the symbol's value and its section we can determine its final
2592 value when building the stubs (so the stub knows where to jump. */
2593 bfd_vma target_value;
2594 asection *target_section;
2595
2596 enum ppc_stub_type stub_type;
2597
2598 /* The symbol table entry, if any, that this was derived from. */
2599 struct ppc_link_hash_entry *h;
2600
2601 /* And the reloc addend that this was derived from. */
2602 bfd_vma addend;
2603
2604 /* Where this stub is being called from, or, in the case of combined
2605 stub sections, the first input section in the group. */
2606 asection *id_sec;
2607 };
2608
2609 struct ppc_branch_hash_entry {
2610
2611 /* Base hash table entry structure. */
2612 struct bfd_hash_entry root;
2613
2614 /* Offset within .branch_lt. */
2615 unsigned int offset;
2616
2617 /* Generation marker. */
2618 unsigned int iter;
2619 };
2620
2621 struct ppc_link_hash_entry
2622 {
2623 struct elf_link_hash_entry elf;
2624
2625 /* A pointer to the most recently used stub hash entry against this
2626 symbol. */
2627 struct ppc_stub_hash_entry *stub_cache;
2628
2629 /* Track dynamic relocs copied for this symbol. */
2630 struct ppc_dyn_relocs *dyn_relocs;
2631
2632 /* Link between function code and descriptor symbols. */
2633 struct elf_link_hash_entry *oh;
2634
2635 /* Flag function code and descriptor symbols. */
2636 unsigned int is_func:1;
2637 unsigned int is_func_descriptor:1;
2638 unsigned int is_entry:1;
2639
2640 /* Contexts in which symbol is used in the GOT (or TOC).
2641 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2642 corresponding relocs are encountered during check_relocs.
2643 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2644 indicate the corresponding GOT entry type is not needed.
2645 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2646 a TPREL one. We use a separate flag rather than setting TPREL
2647 just for convenience in distinguishing the two cases. */
2648 #define TLS_GD 1 /* GD reloc. */
2649 #define TLS_LD 2 /* LD reloc. */
2650 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2651 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2652 #define TLS_TLS 16 /* Any TLS reloc. */
2653 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2654 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2655 char tls_mask;
2656 };
2657
2658 /* ppc64 ELF linker hash table. */
2659
2660 struct ppc_link_hash_table
2661 {
2662 struct elf_link_hash_table elf;
2663
2664 /* The stub hash table. */
2665 struct bfd_hash_table stub_hash_table;
2666
2667 /* Another hash table for plt_branch stubs. */
2668 struct bfd_hash_table branch_hash_table;
2669
2670 /* Linker stub bfd. */
2671 bfd *stub_bfd;
2672
2673 /* Linker call-backs. */
2674 asection * (*add_stub_section) PARAMS ((const char *, asection *));
2675 void (*layout_sections_again) PARAMS ((void));
2676
2677 /* Array to keep track of which stub sections have been created, and
2678 information on stub grouping. */
2679 struct map_stub {
2680 /* This is the section to which stubs in the group will be attached. */
2681 asection *link_sec;
2682 /* The stub section. */
2683 asection *stub_sec;
2684 } *stub_group;
2685
2686 /* Assorted information used by ppc64_elf_size_stubs. */
2687 int top_index;
2688 asection **input_list;
2689
2690 /* Short-cuts to get to dynamic linker sections. */
2691 asection *sgot;
2692 asection *srelgot;
2693 asection *splt;
2694 asection *srelplt;
2695 asection *sdynbss;
2696 asection *srelbss;
2697 asection *sglink;
2698 asection *sfpr;
2699 asection *sbrlt;
2700 asection *srelbrlt;
2701
2702 /* Short-cut to first output tls section. */
2703 asection *tls_sec;
2704
2705 /* Shortcut to .__tls_get_addr. */
2706 struct elf_link_hash_entry *tls_get_addr;
2707
2708 /* TLS local dynamic got entry handling. */
2709 union {
2710 bfd_signed_vma refcount;
2711 bfd_vma offset;
2712 } tlsld_got;
2713
2714 /* Set on error. */
2715 unsigned int stub_error;
2716
2717 /* Flag set when small branches are detected. Used to
2718 select suitable defaults for the stub group size. */
2719 unsigned int has_14bit_branch;
2720
2721 /* Set if we detect a reference undefined weak symbol. */
2722 unsigned int have_undefweak;
2723
2724 /* Incremented every time we size stubs. */
2725 unsigned int stub_iteration;
2726
2727 /* Small local sym to section mapping cache. */
2728 struct sym_sec_cache sym_sec;
2729 };
2730
2731 static struct bfd_hash_entry *stub_hash_newfunc
2732 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2733 static struct bfd_hash_entry *branch_hash_newfunc
2734 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2735 static struct bfd_hash_entry *link_hash_newfunc
2736 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2737 static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
2738 PARAMS ((bfd *));
2739 static void ppc64_elf_link_hash_table_free
2740 PARAMS ((struct bfd_link_hash_table *));
2741 static char *ppc_stub_name
2742 PARAMS ((const asection *, const asection *,
2743 const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
2744 static struct ppc_stub_hash_entry *ppc_get_stub_entry
2745 PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
2746 const Elf_Internal_Rela *, struct ppc_link_hash_table *));
2747 static struct ppc_stub_hash_entry *ppc_add_stub
2748 PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
2749 static bfd_boolean create_linkage_sections
2750 PARAMS ((bfd *, struct bfd_link_info *));
2751 static bfd_boolean create_got_section
2752 PARAMS ((bfd *, struct bfd_link_info *));
2753 static bfd_boolean ppc64_elf_create_dynamic_sections
2754 PARAMS ((bfd *, struct bfd_link_info *));
2755 static void ppc64_elf_copy_indirect_symbol
2756 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
2757 struct elf_link_hash_entry *));
2758 static bfd_boolean update_local_sym_info
2759 PARAMS ((bfd *, Elf_Internal_Shdr *, unsigned long, bfd_vma, int));
2760 static bfd_boolean update_plt_info
2761 PARAMS ((bfd *, struct ppc_link_hash_entry *, bfd_vma));
2762 static bfd_boolean ppc64_elf_check_relocs
2763 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2764 const Elf_Internal_Rela *));
2765 static asection * ppc64_elf_gc_mark_hook
2766 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
2767 struct elf_link_hash_entry *, Elf_Internal_Sym *));
2768 static bfd_boolean ppc64_elf_gc_sweep_hook
2769 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2770 const Elf_Internal_Rela *));
2771 static bfd_boolean func_desc_adjust
2772 PARAMS ((struct elf_link_hash_entry *, PTR));
2773 static bfd_boolean ppc64_elf_func_desc_adjust
2774 PARAMS ((bfd *, struct bfd_link_info *));
2775 static bfd_boolean ppc64_elf_adjust_dynamic_symbol
2776 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
2777 static void ppc64_elf_hide_symbol
2778 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
2779 static bfd_boolean get_sym_h
2780 PARAMS ((struct elf_link_hash_entry **, Elf_Internal_Sym **, asection **,
2781 char **, Elf_Internal_Sym **, unsigned long, bfd *));
2782 static int get_tls_mask
2783 PARAMS ((char **, Elf_Internal_Sym **, const Elf_Internal_Rela *, bfd *));
2784 static bfd_boolean allocate_dynrelocs
2785 PARAMS ((struct elf_link_hash_entry *, PTR));
2786 static bfd_boolean readonly_dynrelocs
2787 PARAMS ((struct elf_link_hash_entry *, PTR));
2788 static enum elf_reloc_type_class ppc64_elf_reloc_type_class
2789 PARAMS ((const Elf_Internal_Rela *));
2790 static bfd_boolean ppc64_elf_size_dynamic_sections
2791 PARAMS ((bfd *, struct bfd_link_info *));
2792 static enum ppc_stub_type ppc_type_of_stub
2793 PARAMS ((asection *, const Elf_Internal_Rela *,
2794 struct ppc_link_hash_entry **, bfd_vma));
2795 static bfd_byte *build_plt_stub
2796 PARAMS ((bfd *, bfd_byte *, int, int));
2797 static bfd_boolean ppc_build_one_stub
2798 PARAMS ((struct bfd_hash_entry *, PTR));
2799 static bfd_boolean ppc_size_one_stub
2800 PARAMS ((struct bfd_hash_entry *, PTR));
2801 static void group_sections
2802 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, bfd_boolean));
2803 static bfd_boolean ppc64_elf_relocate_section
2804 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
2805 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
2806 asection **));
2807 static bfd_boolean ppc64_elf_finish_dynamic_symbol
2808 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2809 Elf_Internal_Sym *));
2810 static bfd_boolean ppc64_elf_finish_dynamic_sections
2811 PARAMS ((bfd *, struct bfd_link_info *));
2812
2813 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2814
2815 #define ppc_hash_table(p) \
2816 ((struct ppc_link_hash_table *) ((p)->hash))
2817
2818 #define ppc_stub_hash_lookup(table, string, create, copy) \
2819 ((struct ppc_stub_hash_entry *) \
2820 bfd_hash_lookup ((table), (string), (create), (copy)))
2821
2822 #define ppc_branch_hash_lookup(table, string, create, copy) \
2823 ((struct ppc_branch_hash_entry *) \
2824 bfd_hash_lookup ((table), (string), (create), (copy)))
2825
2826 /* Create an entry in the stub hash table. */
2827
2828 static struct bfd_hash_entry *
2829 stub_hash_newfunc (entry, table, string)
2830 struct bfd_hash_entry *entry;
2831 struct bfd_hash_table *table;
2832 const char *string;
2833 {
2834 /* Allocate the structure if it has not already been allocated by a
2835 subclass. */
2836 if (entry == NULL)
2837 {
2838 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2839 if (entry == NULL)
2840 return entry;
2841 }
2842
2843 /* Call the allocation method of the superclass. */
2844 entry = bfd_hash_newfunc (entry, table, string);
2845 if (entry != NULL)
2846 {
2847 struct ppc_stub_hash_entry *eh;
2848
2849 /* Initialize the local fields. */
2850 eh = (struct ppc_stub_hash_entry *) entry;
2851 eh->stub_sec = NULL;
2852 eh->stub_offset = 0;
2853 eh->target_value = 0;
2854 eh->target_section = NULL;
2855 eh->stub_type = ppc_stub_none;
2856 eh->h = NULL;
2857 eh->id_sec = NULL;
2858 }
2859
2860 return entry;
2861 }
2862
2863 /* Create an entry in the branch hash table. */
2864
2865 static struct bfd_hash_entry *
2866 branch_hash_newfunc (entry, table, string)
2867 struct bfd_hash_entry *entry;
2868 struct bfd_hash_table *table;
2869 const char *string;
2870 {
2871 /* Allocate the structure if it has not already been allocated by a
2872 subclass. */
2873 if (entry == NULL)
2874 {
2875 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2876 if (entry == NULL)
2877 return entry;
2878 }
2879
2880 /* Call the allocation method of the superclass. */
2881 entry = bfd_hash_newfunc (entry, table, string);
2882 if (entry != NULL)
2883 {
2884 struct ppc_branch_hash_entry *eh;
2885
2886 /* Initialize the local fields. */
2887 eh = (struct ppc_branch_hash_entry *) entry;
2888 eh->offset = 0;
2889 eh->iter = 0;
2890 }
2891
2892 return entry;
2893 }
2894
2895 /* Create an entry in a ppc64 ELF linker hash table. */
2896
2897 static struct bfd_hash_entry *
2898 link_hash_newfunc (entry, table, string)
2899 struct bfd_hash_entry *entry;
2900 struct bfd_hash_table *table;
2901 const char *string;
2902 {
2903 /* Allocate the structure if it has not already been allocated by a
2904 subclass. */
2905 if (entry == NULL)
2906 {
2907 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2908 if (entry == NULL)
2909 return entry;
2910 }
2911
2912 /* Call the allocation method of the superclass. */
2913 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2914 if (entry != NULL)
2915 {
2916 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2917
2918 eh->stub_cache = NULL;
2919 eh->dyn_relocs = NULL;
2920 eh->oh = NULL;
2921 eh->is_func = 0;
2922 eh->is_func_descriptor = 0;
2923 eh->is_entry = 0;
2924 eh->tls_mask = 0;
2925 }
2926
2927 return entry;
2928 }
2929
2930 /* Create a ppc64 ELF linker hash table. */
2931
2932 static struct bfd_link_hash_table *
2933 ppc64_elf_link_hash_table_create (abfd)
2934 bfd *abfd;
2935 {
2936 struct ppc_link_hash_table *htab;
2937 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2938
2939 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
2940 if (htab == NULL)
2941 return NULL;
2942
2943 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2944 {
2945 free (htab);
2946 return NULL;
2947 }
2948
2949 /* Init the stub hash table too. */
2950 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2951 return NULL;
2952
2953 /* And the branch hash table. */
2954 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2955 return NULL;
2956
2957 htab->stub_bfd = NULL;
2958 htab->add_stub_section = NULL;
2959 htab->layout_sections_again = NULL;
2960 htab->stub_group = NULL;
2961 htab->sgot = NULL;
2962 htab->srelgot = NULL;
2963 htab->splt = NULL;
2964 htab->srelplt = NULL;
2965 htab->sdynbss = NULL;
2966 htab->srelbss = NULL;
2967 htab->sglink = NULL;
2968 htab->sfpr = NULL;
2969 htab->sbrlt = NULL;
2970 htab->srelbrlt = NULL;
2971 htab->tls_sec = NULL;
2972 htab->tls_get_addr = NULL;
2973 htab->tlsld_got.refcount = 0;
2974 htab->stub_error = 0;
2975 htab->has_14bit_branch = 0;
2976 htab->have_undefweak = 0;
2977 htab->stub_iteration = 0;
2978 htab->sym_sec.abfd = NULL;
2979 /* Initializing two fields of the union is just cosmetic. We really
2980 only care about glist, but when compiled on a 32-bit host the
2981 bfd_vma fields are larger. Setting the bfd_vma to zero makes
2982 debugger inspection of these fields look nicer. */
2983 htab->elf.init_refcount.refcount = 0;
2984 htab->elf.init_refcount.glist = NULL;
2985 htab->elf.init_offset.offset = 0;
2986 htab->elf.init_offset.glist = NULL;
2987
2988 return &htab->elf.root;
2989 }
2990
2991 /* Free the derived linker hash table. */
2992
2993 static void
2994 ppc64_elf_link_hash_table_free (hash)
2995 struct bfd_link_hash_table *hash;
2996 {
2997 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
2998
2999 bfd_hash_table_free (&ret->stub_hash_table);
3000 bfd_hash_table_free (&ret->branch_hash_table);
3001 _bfd_generic_link_hash_table_free (hash);
3002 }
3003
3004 /* Build a name for an entry in the stub hash table. */
3005
3006 static char *
3007 ppc_stub_name (input_section, sym_sec, h, rel)
3008 const asection *input_section;
3009 const asection *sym_sec;
3010 const struct ppc_link_hash_entry *h;
3011 const Elf_Internal_Rela *rel;
3012 {
3013 char *stub_name;
3014 bfd_size_type len;
3015
3016 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3017 offsets from a sym as a branch target? In fact, we could
3018 probably assume the addend is always zero. */
3019 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3020
3021 if (h)
3022 {
3023 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3024 stub_name = bfd_malloc (len);
3025 if (stub_name != NULL)
3026 {
3027 sprintf (stub_name, "%08x_%s+%x",
3028 input_section->id & 0xffffffff,
3029 h->elf.root.root.string,
3030 (int) rel->r_addend & 0xffffffff);
3031 }
3032 }
3033 else
3034 {
3035 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3036 stub_name = bfd_malloc (len);
3037 if (stub_name != NULL)
3038 {
3039 sprintf (stub_name, "%08x_%x:%x+%x",
3040 input_section->id & 0xffffffff,
3041 sym_sec->id & 0xffffffff,
3042 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3043 (int) rel->r_addend & 0xffffffff);
3044 }
3045 }
3046 return stub_name;
3047 }
3048
3049 /* Look up an entry in the stub hash. Stub entries are cached because
3050 creating the stub name takes a bit of time. */
3051
3052 static struct ppc_stub_hash_entry *
3053 ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
3054 const asection *input_section;
3055 const asection *sym_sec;
3056 struct elf_link_hash_entry *hash;
3057 const Elf_Internal_Rela *rel;
3058 struct ppc_link_hash_table *htab;
3059 {
3060 struct ppc_stub_hash_entry *stub_entry;
3061 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3062 const asection *id_sec;
3063
3064 /* If this input section is part of a group of sections sharing one
3065 stub section, then use the id of the first section in the group.
3066 Stub names need to include a section id, as there may well be
3067 more than one stub used to reach say, printf, and we need to
3068 distinguish between them. */
3069 id_sec = htab->stub_group[input_section->id].link_sec;
3070
3071 if (h != NULL && h->stub_cache != NULL
3072 && h->stub_cache->h == h
3073 && h->stub_cache->id_sec == id_sec)
3074 {
3075 stub_entry = h->stub_cache;
3076 }
3077 else
3078 {
3079 char *stub_name;
3080
3081 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3082 if (stub_name == NULL)
3083 return NULL;
3084
3085 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3086 stub_name, FALSE, FALSE);
3087 if (h != NULL)
3088 h->stub_cache = stub_entry;
3089
3090 free (stub_name);
3091 }
3092
3093 return stub_entry;
3094 }
3095
3096 /* Add a new stub entry to the stub hash. Not all fields of the new
3097 stub entry are initialised. */
3098
3099 static struct ppc_stub_hash_entry *
3100 ppc_add_stub (stub_name, section, htab)
3101 const char *stub_name;
3102 asection *section;
3103 struct ppc_link_hash_table *htab;
3104 {
3105 asection *link_sec;
3106 asection *stub_sec;
3107 struct ppc_stub_hash_entry *stub_entry;
3108
3109 link_sec = htab->stub_group[section->id].link_sec;
3110 stub_sec = htab->stub_group[section->id].stub_sec;
3111 if (stub_sec == NULL)
3112 {
3113 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3114 if (stub_sec == NULL)
3115 {
3116 size_t namelen;
3117 bfd_size_type len;
3118 char *s_name;
3119
3120 namelen = strlen (link_sec->name);
3121 len = namelen + sizeof (STUB_SUFFIX);
3122 s_name = bfd_alloc (htab->stub_bfd, len);
3123 if (s_name == NULL)
3124 return NULL;
3125
3126 memcpy (s_name, link_sec->name, namelen);
3127 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3128 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3129 if (stub_sec == NULL)
3130 return NULL;
3131 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3132 }
3133 htab->stub_group[section->id].stub_sec = stub_sec;
3134 }
3135
3136 /* Enter this entry into the linker stub hash table. */
3137 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3138 TRUE, FALSE);
3139 if (stub_entry == NULL)
3140 {
3141 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3142 bfd_archive_filename (section->owner),
3143 stub_name);
3144 return NULL;
3145 }
3146
3147 stub_entry->stub_sec = stub_sec;
3148 stub_entry->stub_offset = 0;
3149 stub_entry->id_sec = link_sec;
3150 return stub_entry;
3151 }
3152
3153 /* Create sections for linker generated code. */
3154
3155 static bfd_boolean
3156 create_linkage_sections (dynobj, info)
3157 bfd *dynobj;
3158 struct bfd_link_info *info;
3159 {
3160 struct ppc_link_hash_table *htab;
3161 flagword flags;
3162
3163 htab = ppc_hash_table (info);
3164
3165 /* Create .sfpr for code to save and restore fp regs. */
3166 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3167 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3168 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3169 if (htab->sfpr == NULL
3170 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3171 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3172 return FALSE;
3173
3174 /* Create .glink for lazy dynamic linking support. */
3175 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
3176 if (htab->sglink == NULL
3177 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
3178 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
3179 return FALSE;
3180
3181 /* Create .branch_lt for plt_branch stubs. */
3182 flags = (SEC_ALLOC | SEC_LOAD
3183 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3184 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3185 if (htab->sbrlt == NULL
3186 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
3187 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
3188 return FALSE;
3189
3190 if (info->shared)
3191 {
3192 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3193 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3194 htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3195 if (!htab->srelbrlt
3196 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
3197 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
3198 return FALSE;
3199 }
3200 return TRUE;
3201 }
3202
3203 /* Create .got and .rela.got sections in DYNOBJ, and set up
3204 shortcuts to them in our hash table. */
3205
3206 static bfd_boolean
3207 create_got_section (dynobj, info)
3208 bfd *dynobj;
3209 struct bfd_link_info *info;
3210 {
3211 struct ppc_link_hash_table *htab;
3212
3213 if (! _bfd_elf_create_got_section (dynobj, info))
3214 return FALSE;
3215
3216 htab = ppc_hash_table (info);
3217 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
3218 if (!htab->sgot)
3219 abort ();
3220
3221 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
3222 if (!htab->srelgot
3223 || ! bfd_set_section_flags (dynobj, htab->srelgot,
3224 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3225 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3226 | SEC_READONLY))
3227 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
3228 return FALSE;
3229 return TRUE;
3230 }
3231
3232 /* Create the dynamic sections, and set up shortcuts. */
3233
3234 static bfd_boolean
3235 ppc64_elf_create_dynamic_sections (dynobj, info)
3236 bfd *dynobj;
3237 struct bfd_link_info *info;
3238 {
3239 struct ppc_link_hash_table *htab;
3240
3241 htab = ppc_hash_table (info);
3242 if (!htab->sgot && !create_got_section (dynobj, info))
3243 return FALSE;
3244
3245 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3246 return FALSE;
3247
3248 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
3249 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3250 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3251 if (!info->shared)
3252 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3253
3254 if (!htab->splt || !htab->srelplt || !htab->sdynbss
3255 || (!info->shared && !htab->srelbss))
3256 abort ();
3257
3258 return TRUE;
3259 }
3260
3261 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3262
3263 static void
3264 ppc64_elf_copy_indirect_symbol (bed, dir, ind)
3265 struct elf_backend_data *bed ATTRIBUTE_UNUSED;
3266 struct elf_link_hash_entry *dir, *ind;
3267 {
3268 struct ppc_link_hash_entry *edir, *eind;
3269
3270 edir = (struct ppc_link_hash_entry *) dir;
3271 eind = (struct ppc_link_hash_entry *) ind;
3272
3273 /* Copy over any dynamic relocs we may have on the indirect sym. */
3274 if (eind->dyn_relocs != NULL)
3275 {
3276 if (edir->dyn_relocs != NULL)
3277 {
3278 struct ppc_dyn_relocs **pp;
3279 struct ppc_dyn_relocs *p;
3280
3281 if (eind->elf.root.type == bfd_link_hash_indirect)
3282 abort ();
3283
3284 /* Add reloc counts against the weak sym to the strong sym
3285 list. Merge any entries against the same section. */
3286 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3287 {
3288 struct ppc_dyn_relocs *q;
3289
3290 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3291 if (q->sec == p->sec)
3292 {
3293 q->pc_count += p->pc_count;
3294 q->count += p->count;
3295 *pp = p->next;
3296 break;
3297 }
3298 if (q == NULL)
3299 pp = &p->next;
3300 }
3301 *pp = edir->dyn_relocs;
3302 }
3303
3304 edir->dyn_relocs = eind->dyn_relocs;
3305 eind->dyn_relocs = NULL;
3306 }
3307
3308 edir->is_func |= eind->is_func;
3309 edir->is_func_descriptor |= eind->is_func_descriptor;
3310 edir->is_entry |= eind->is_entry;
3311 edir->tls_mask |= eind->tls_mask;
3312
3313 /* Copy down any references that we may have already seen to the
3314 symbol which just became indirect. */
3315 edir->elf.elf_link_hash_flags |=
3316 (eind->elf.elf_link_hash_flags
3317 & (ELF_LINK_HASH_REF_DYNAMIC
3318 | ELF_LINK_HASH_REF_REGULAR
3319 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
3320 | ELF_LINK_NON_GOT_REF));
3321
3322 /* If we were called to copy over info for a weak sym, that's all. */
3323 if (eind->elf.root.type != bfd_link_hash_indirect)
3324 return;
3325
3326 /* Copy over got entries. */
3327 if (eind->elf.got.glist != NULL)
3328 {
3329 if (edir->elf.got.glist != NULL)
3330 {
3331 struct got_entry **entp;
3332 struct got_entry *ent;
3333
3334 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3335 {
3336 struct got_entry *dent;
3337
3338 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3339 if (dent->addend == ent->addend
3340 && dent->tls_type == ent->tls_type)
3341 {
3342 dent->got.refcount += ent->got.refcount;
3343 *entp = ent->next;
3344 break;
3345 }
3346 if (dent == NULL)
3347 entp = &ent->next;
3348 }
3349 *entp = edir->elf.got.glist;
3350 }
3351
3352 edir->elf.got.glist = eind->elf.got.glist;
3353 eind->elf.got.glist = NULL;
3354 }
3355
3356 /* And plt entries. */
3357 if (eind->elf.plt.plist != NULL)
3358 {
3359 if (edir->elf.plt.plist != NULL)
3360 {
3361 struct plt_entry **entp;
3362 struct plt_entry *ent;
3363
3364 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3365 {
3366 struct plt_entry *dent;
3367
3368 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3369 if (dent->addend == ent->addend)
3370 {
3371 dent->plt.refcount += ent->plt.refcount;
3372 *entp = ent->next;
3373 break;
3374 }
3375 if (dent == NULL)
3376 entp = &ent->next;
3377 }
3378 *entp = edir->elf.plt.plist;
3379 }
3380
3381 edir->elf.plt.plist = eind->elf.plt.plist;
3382 eind->elf.plt.plist = NULL;
3383 }
3384
3385 if (edir->elf.dynindx == -1)
3386 {
3387 edir->elf.dynindx = eind->elf.dynindx;
3388 edir->elf.dynstr_index = eind->elf.dynstr_index;
3389 eind->elf.dynindx = -1;
3390 eind->elf.dynstr_index = 0;
3391 }
3392 else
3393 BFD_ASSERT (eind->elf.dynindx == -1);
3394 }
3395
3396 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3397 symbols undefined on the command-line. */
3398
3399 bfd_boolean
3400 ppc64_elf_mark_entry_syms (info)
3401 struct bfd_link_info *info;
3402 {
3403 struct ppc_link_hash_table *htab;
3404 struct bfd_sym_chain *sym;
3405
3406 htab = ppc_hash_table (info);
3407 for (sym = info->gc_sym_list; sym; sym = sym->next)
3408 {
3409 struct elf_link_hash_entry *h;
3410
3411 h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
3412 if (h != NULL)
3413 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
3414 }
3415 return TRUE;
3416 }
3417
3418 static bfd_boolean
3419 update_local_sym_info (abfd, symtab_hdr, r_symndx, r_addend, tls_type)
3420 bfd *abfd;
3421 Elf_Internal_Shdr *symtab_hdr;
3422 unsigned long r_symndx;
3423 bfd_vma r_addend;
3424 int tls_type;
3425 {
3426 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3427 char *local_got_tls_masks;
3428
3429 if (local_got_ents == NULL)
3430 {
3431 bfd_size_type size = symtab_hdr->sh_info;
3432
3433 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3434 local_got_ents = (struct got_entry **) bfd_zalloc (abfd, size);
3435 if (local_got_ents == NULL)
3436 return FALSE;
3437 elf_local_got_ents (abfd) = local_got_ents;
3438 }
3439
3440 if ((tls_type & TLS_EXPLICIT) == 0)
3441 {
3442 struct got_entry *ent;
3443
3444 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3445 if (ent->addend == r_addend && ent->tls_type == tls_type)
3446 break;
3447 if (ent == NULL)
3448 {
3449 bfd_size_type amt = sizeof (*ent);
3450 ent = (struct got_entry *) bfd_alloc (abfd, amt);
3451 if (ent == NULL)
3452 return FALSE;
3453 ent->next = local_got_ents[r_symndx];
3454 ent->addend = r_addend;
3455 ent->tls_type = tls_type;
3456 ent->got.refcount = 0;
3457 local_got_ents[r_symndx] = ent;
3458 }
3459 ent->got.refcount += 1;
3460 }
3461
3462 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3463 local_got_tls_masks[r_symndx] |= tls_type;
3464 return TRUE;
3465 }
3466
3467 static bfd_boolean
3468 update_plt_info (abfd, eh, addend)
3469 bfd *abfd;
3470 struct ppc_link_hash_entry *eh;
3471 bfd_vma addend;
3472 {
3473 struct plt_entry *ent;
3474
3475 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3476 if (ent->addend == addend)
3477 break;
3478 if (ent == NULL)
3479 {
3480 bfd_size_type amt = sizeof (*ent);
3481 ent = (struct plt_entry *) bfd_alloc (abfd, amt);
3482 if (ent == NULL)
3483 return FALSE;
3484 ent->next = eh->elf.plt.plist;
3485 ent->addend = addend;
3486 ent->plt.refcount = 0;
3487 eh->elf.plt.plist = ent;
3488 }
3489 ent->plt.refcount += 1;
3490 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3491 eh->is_func = 1;
3492 return TRUE;
3493 }
3494
3495 /* Look through the relocs for a section during the first phase, and
3496 calculate needed space in the global offset table, procedure
3497 linkage table, and dynamic reloc sections. */
3498
3499 static bfd_boolean
3500 ppc64_elf_check_relocs (abfd, info, sec, relocs)
3501 bfd *abfd;
3502 struct bfd_link_info *info;
3503 asection *sec;
3504 const Elf_Internal_Rela *relocs;
3505 {
3506 struct ppc_link_hash_table *htab;
3507 Elf_Internal_Shdr *symtab_hdr;
3508 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3509 const Elf_Internal_Rela *rel;
3510 const Elf_Internal_Rela *rel_end;
3511 asection *sreloc;
3512 asection **opd_sym_map;
3513
3514 if (info->relocateable)
3515 return TRUE;
3516
3517 htab = ppc_hash_table (info);
3518 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3519
3520 sym_hashes = elf_sym_hashes (abfd);
3521 sym_hashes_end = (sym_hashes
3522 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3523 - symtab_hdr->sh_info);
3524
3525 sreloc = NULL;
3526 opd_sym_map = NULL;
3527 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3528 {
3529 /* Garbage collection needs some extra help with .opd sections.
3530 We don't want to necessarily keep everything referenced by
3531 relocs in .opd, as that would keep all functions. Instead,
3532 if we reference an .opd symbol (a function descriptor), we
3533 want to keep the function code symbol's section. This is
3534 easy for global symbols, but for local syms we need to keep
3535 information about the associated function section. Later, if
3536 edit_opd deletes entries, we'll use this array to adjust
3537 local syms in .opd. */
3538 union opd_info {
3539 asection *func_section;
3540 long entry_adjust;
3541 };
3542 bfd_size_type amt;
3543
3544 amt = sec->_raw_size * sizeof (union opd_info) / 24;
3545 opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
3546 if (opd_sym_map == NULL)
3547 return FALSE;
3548 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3549 }
3550
3551 if (htab->elf.dynobj == NULL)
3552 htab->elf.dynobj = abfd;
3553 if (htab->sfpr == NULL
3554 && !create_linkage_sections (htab->elf.dynobj, info))
3555 return FALSE;
3556
3557 rel_end = relocs + sec->reloc_count;
3558 for (rel = relocs; rel < rel_end; rel++)
3559 {
3560 unsigned long r_symndx;
3561 struct elf_link_hash_entry *h;
3562 enum elf_ppc64_reloc_type r_type;
3563 int tls_type = 0;
3564
3565 r_symndx = ELF64_R_SYM (rel->r_info);
3566 if (r_symndx < symtab_hdr->sh_info)
3567 h = NULL;
3568 else
3569 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3570
3571 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
3572 switch (r_type)
3573 {
3574 case R_PPC64_GOT_TLSLD16:
3575 case R_PPC64_GOT_TLSLD16_LO:
3576 case R_PPC64_GOT_TLSLD16_HI:
3577 case R_PPC64_GOT_TLSLD16_HA:
3578 htab->tlsld_got.refcount += 1;
3579 tls_type = TLS_TLS | TLS_LD;
3580 goto dogottls;
3581
3582 case R_PPC64_GOT_TLSGD16:
3583 case R_PPC64_GOT_TLSGD16_LO:
3584 case R_PPC64_GOT_TLSGD16_HI:
3585 case R_PPC64_GOT_TLSGD16_HA:
3586 tls_type = TLS_TLS | TLS_GD;
3587 goto dogottls;
3588
3589 case R_PPC64_GOT_TPREL16_DS:
3590 case R_PPC64_GOT_TPREL16_LO_DS:
3591 case R_PPC64_GOT_TPREL16_HI:
3592 case R_PPC64_GOT_TPREL16_HA:
3593 if (info->shared)
3594 info->flags |= DF_STATIC_TLS;
3595 tls_type = TLS_TLS | TLS_TPREL;
3596 goto dogottls;
3597
3598 case R_PPC64_GOT_DTPREL16_DS:
3599 case R_PPC64_GOT_DTPREL16_LO_DS:
3600 case R_PPC64_GOT_DTPREL16_HI:
3601 case R_PPC64_GOT_DTPREL16_HA:
3602 tls_type = TLS_TLS | TLS_DTPREL;
3603 dogottls:
3604 sec->has_tls_reloc = 1;
3605 /* Fall thru */
3606
3607 case R_PPC64_GOT16:
3608 case R_PPC64_GOT16_DS:
3609 case R_PPC64_GOT16_HA:
3610 case R_PPC64_GOT16_HI:
3611 case R_PPC64_GOT16_LO:
3612 case R_PPC64_GOT16_LO_DS:
3613 /* This symbol requires a global offset table entry. */
3614 if (htab->sgot == NULL
3615 && !create_got_section (htab->elf.dynobj, info))
3616 return FALSE;
3617
3618 if (h != NULL)
3619 {
3620 struct ppc_link_hash_entry *eh;
3621 struct got_entry *ent;
3622
3623 eh = (struct ppc_link_hash_entry *) h;
3624 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3625 if (ent->addend == rel->r_addend
3626 && ent->tls_type == tls_type)
3627 break;
3628 if (ent == NULL)
3629 {
3630 bfd_size_type amt = sizeof (*ent);
3631 ent = (struct got_entry *) bfd_alloc (abfd, amt);
3632 if (ent == NULL)
3633 return FALSE;
3634 ent->next = eh->elf.got.glist;
3635 ent->addend = rel->r_addend;
3636 ent->tls_type = tls_type;
3637 ent->got.refcount = 0;
3638 eh->elf.got.glist = ent;
3639 }
3640 ent->got.refcount += 1;
3641 eh->tls_mask |= tls_type;
3642 }
3643 else
3644 /* This is a global offset table entry for a local symbol. */
3645 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3646 rel->r_addend, tls_type))
3647 return FALSE;
3648 break;
3649
3650 case R_PPC64_PLT16_HA:
3651 case R_PPC64_PLT16_HI:
3652 case R_PPC64_PLT16_LO:
3653 case R_PPC64_PLT32:
3654 case R_PPC64_PLT64:
3655 /* This symbol requires a procedure linkage table entry. We
3656 actually build the entry in adjust_dynamic_symbol,
3657 because this might be a case of linking PIC code without
3658 linking in any dynamic objects, in which case we don't
3659 need to generate a procedure linkage table after all. */
3660 if (h == NULL)
3661 {
3662 /* It does not make sense to have a procedure linkage
3663 table entry for a local symbol. */
3664 bfd_set_error (bfd_error_bad_value);
3665 return FALSE;
3666 }
3667 else
3668 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3669 rel->r_addend))
3670 return FALSE;
3671 break;
3672
3673 /* The following relocations don't need to propagate the
3674 relocation if linking a shared object since they are
3675 section relative. */
3676 case R_PPC64_SECTOFF:
3677 case R_PPC64_SECTOFF_LO:
3678 case R_PPC64_SECTOFF_HI:
3679 case R_PPC64_SECTOFF_HA:
3680 case R_PPC64_SECTOFF_DS:
3681 case R_PPC64_SECTOFF_LO_DS:
3682 case R_PPC64_TOC16:
3683 case R_PPC64_TOC16_LO:
3684 case R_PPC64_TOC16_HI:
3685 case R_PPC64_TOC16_HA:
3686 case R_PPC64_TOC16_DS:
3687 case R_PPC64_TOC16_LO_DS:
3688 case R_PPC64_DTPREL16:
3689 case R_PPC64_DTPREL16_LO:
3690 case R_PPC64_DTPREL16_HI:
3691 case R_PPC64_DTPREL16_HA:
3692 case R_PPC64_DTPREL16_DS:
3693 case R_PPC64_DTPREL16_LO_DS:
3694 case R_PPC64_DTPREL16_HIGHER:
3695 case R_PPC64_DTPREL16_HIGHERA:
3696 case R_PPC64_DTPREL16_HIGHEST:
3697 case R_PPC64_DTPREL16_HIGHESTA:
3698 break;
3699
3700 /* This relocation describes the C++ object vtable hierarchy.
3701 Reconstruct it for later use during GC. */
3702 case R_PPC64_GNU_VTINHERIT:
3703 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3704 return FALSE;
3705 break;
3706
3707 /* This relocation describes which C++ vtable entries are actually
3708 used. Record for later use during GC. */
3709 case R_PPC64_GNU_VTENTRY:
3710 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3711 return FALSE;
3712 break;
3713
3714 case R_PPC64_REL14:
3715 case R_PPC64_REL14_BRTAKEN:
3716 case R_PPC64_REL14_BRNTAKEN:
3717 htab->has_14bit_branch = 1;
3718 /* Fall through. */
3719
3720 case R_PPC64_REL24:
3721 if (h != NULL
3722 && h->root.root.string[0] == '.'
3723 && h->root.root.string[1] != 0)
3724 {
3725 /* We may need a .plt entry if the function this reloc
3726 refers to is in a shared lib. */
3727 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3728 rel->r_addend))
3729 return FALSE;
3730 if (h == htab->tls_get_addr)
3731 sec->has_tls_reloc = 1;
3732 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3733 == 0)
3734 && (h->root.root.string[15] == 0
3735 || h->root.root.string[15] == '@'))
3736 {
3737 htab->tls_get_addr = h;
3738 sec->has_tls_reloc = 1;
3739 }
3740 }
3741 break;
3742
3743 case R_PPC64_TPREL64:
3744 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3745 if (info->shared)
3746 info->flags |= DF_STATIC_TLS;
3747 goto dotlstoc;
3748
3749 case R_PPC64_DTPMOD64:
3750 if (rel + 1 < rel_end
3751 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3752 && rel[1].r_offset == rel->r_offset + 8)
3753 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3754 else
3755 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3756 goto dotlstoc;
3757
3758 case R_PPC64_DTPREL64:
3759 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3760 if (rel != relocs
3761 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3762 && rel[-1].r_offset == rel->r_offset - 8)
3763 /* This is the second reloc of a dtpmod, dtprel pair.
3764 Don't mark with TLS_DTPREL. */
3765 goto dodyn;
3766
3767 dotlstoc:
3768 sec->has_tls_reloc = 1;
3769 if (h != NULL)
3770 {
3771 struct ppc_link_hash_entry *eh;
3772 eh = (struct ppc_link_hash_entry *) h;
3773 eh->tls_mask |= tls_type;
3774 }
3775 else
3776 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3777 rel->r_addend, tls_type))
3778 return FALSE;
3779
3780 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3781 {
3782 /* One extra to simplify get_tls_mask. */
3783 bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
3784 ppc64_elf_section_data (sec)->t_symndx
3785 = (unsigned *) bfd_zalloc (abfd, amt);
3786 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3787 return FALSE;
3788 }
3789 BFD_ASSERT (rel->r_offset % 8 == 0);
3790 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3791
3792 /* Mark the second slot of a GD or LD entry.
3793 -1 to indicate GD and -2 to indicate LD. */
3794 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3795 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3796 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3797 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3798 goto dodyn;
3799
3800 case R_PPC64_TPREL16:
3801 case R_PPC64_TPREL16_LO:
3802 case R_PPC64_TPREL16_HI:
3803 case R_PPC64_TPREL16_HA:
3804 case R_PPC64_TPREL16_DS:
3805 case R_PPC64_TPREL16_LO_DS:
3806 case R_PPC64_TPREL16_HIGHER:
3807 case R_PPC64_TPREL16_HIGHERA:
3808 case R_PPC64_TPREL16_HIGHEST:
3809 case R_PPC64_TPREL16_HIGHESTA:
3810 if (info->shared)
3811 {
3812 info->flags |= DF_STATIC_TLS;
3813 goto dodyn;
3814 }
3815 break;
3816
3817 case R_PPC64_ADDR64:
3818 if (opd_sym_map != NULL
3819 && h != NULL
3820 && h->root.root.string[0] == '.'
3821 && h->root.root.string[1] != 0)
3822 {
3823 struct elf_link_hash_entry *fdh;
3824
3825 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3826 FALSE, FALSE, FALSE);
3827 if (fdh != NULL)
3828 {
3829 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
3830 ((struct ppc_link_hash_entry *) fdh)->oh = h;
3831 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3832 ((struct ppc_link_hash_entry *) h)->oh = fdh;
3833 }
3834 }
3835 if (opd_sym_map != NULL
3836 && h == NULL
3837 && rel + 1 < rel_end
3838 && ((enum elf_ppc64_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
3839 == R_PPC64_TOC))
3840 {
3841 asection *s;
3842
3843 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3844 r_symndx);
3845 if (s == NULL)
3846 return FALSE;
3847 else if (s != sec)
3848 opd_sym_map[rel->r_offset / 24] = s;
3849 }
3850 /* Fall through. */
3851
3852 case R_PPC64_REL30:
3853 case R_PPC64_REL32:
3854 case R_PPC64_REL64:
3855 case R_PPC64_ADDR14:
3856 case R_PPC64_ADDR14_BRNTAKEN:
3857 case R_PPC64_ADDR14_BRTAKEN:
3858 case R_PPC64_ADDR16:
3859 case R_PPC64_ADDR16_DS:
3860 case R_PPC64_ADDR16_HA:
3861 case R_PPC64_ADDR16_HI:
3862 case R_PPC64_ADDR16_HIGHER:
3863 case R_PPC64_ADDR16_HIGHERA:
3864 case R_PPC64_ADDR16_HIGHEST:
3865 case R_PPC64_ADDR16_HIGHESTA:
3866 case R_PPC64_ADDR16_LO:
3867 case R_PPC64_ADDR16_LO_DS:
3868 case R_PPC64_ADDR24:
3869 case R_PPC64_ADDR32:
3870 case R_PPC64_UADDR16:
3871 case R_PPC64_UADDR32:
3872 case R_PPC64_UADDR64:
3873 case R_PPC64_TOC:
3874 /* Don't propagate .opd relocs. */
3875 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3876 break;
3877
3878 /* If we are creating a shared library, and this is a reloc
3879 against a global symbol, or a non PC relative reloc
3880 against a local symbol, then we need to copy the reloc
3881 into the shared library. However, if we are linking with
3882 -Bsymbolic, we do not need to copy a reloc against a
3883 global symbol which is defined in an object we are
3884 including in the link (i.e., DEF_REGULAR is set). At
3885 this point we have not seen all the input files, so it is
3886 possible that DEF_REGULAR is not set now but will be set
3887 later (it is never cleared). In case of a weak definition,
3888 DEF_REGULAR may be cleared later by a strong definition in
3889 a shared library. We account for that possibility below by
3890 storing information in the relocs_copied field of the hash
3891 table entry. A similar situation occurs when creating
3892 shared libraries and symbol visibility changes render the
3893 symbol local.
3894
3895 If on the other hand, we are creating an executable, we
3896 may need to keep relocations for symbols satisfied by a
3897 dynamic library if we manage to avoid copy relocs for the
3898 symbol. */
3899 dodyn:
3900 if ((info->shared
3901 && (sec->flags & SEC_ALLOC) != 0
3902 && (MUST_BE_DYN_RELOC (r_type)
3903 || (h != NULL
3904 && (! info->symbolic
3905 || h->root.type == bfd_link_hash_defweak
3906 || (h->elf_link_hash_flags
3907 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3908 || (!info->shared
3909 && (sec->flags & SEC_ALLOC) != 0
3910 && h != NULL
3911 && (h->root.type == bfd_link_hash_defweak
3912 || (h->elf_link_hash_flags
3913 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3914 {
3915 struct ppc_dyn_relocs *p;
3916 struct ppc_dyn_relocs **head;
3917
3918 /* We must copy these reloc types into the output file.
3919 Create a reloc section in dynobj and make room for
3920 this reloc. */
3921 if (sreloc == NULL)
3922 {
3923 const char *name;
3924 bfd *dynobj;
3925
3926 name = (bfd_elf_string_from_elf_section
3927 (abfd,
3928 elf_elfheader (abfd)->e_shstrndx,
3929 elf_section_data (sec)->rel_hdr.sh_name));
3930 if (name == NULL)
3931 return FALSE;
3932
3933 if (strncmp (name, ".rela", 5) != 0
3934 || strcmp (bfd_get_section_name (abfd, sec),
3935 name + 5) != 0)
3936 {
3937 (*_bfd_error_handler)
3938 (_("%s: bad relocation section name `%s\'"),
3939 bfd_archive_filename (abfd), name);
3940 bfd_set_error (bfd_error_bad_value);
3941 }
3942
3943 dynobj = htab->elf.dynobj;
3944 sreloc = bfd_get_section_by_name (dynobj, name);
3945 if (sreloc == NULL)
3946 {
3947 flagword flags;
3948
3949 sreloc = bfd_make_section (dynobj, name);
3950 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3951 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3952 if ((sec->flags & SEC_ALLOC) != 0)
3953 flags |= SEC_ALLOC | SEC_LOAD;
3954 if (sreloc == NULL
3955 || ! bfd_set_section_flags (dynobj, sreloc, flags)
3956 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
3957 return FALSE;
3958 }
3959 elf_section_data (sec)->sreloc = sreloc;
3960 }
3961
3962 /* If this is a global symbol, we count the number of
3963 relocations we need for this symbol. */
3964 if (h != NULL)
3965 {
3966 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
3967 }
3968 else
3969 {
3970 /* Track dynamic relocs needed for local syms too.
3971 We really need local syms available to do this
3972 easily. Oh well. */
3973
3974 asection *s;
3975 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3976 sec, r_symndx);
3977 if (s == NULL)
3978 return FALSE;
3979
3980 head = ((struct ppc_dyn_relocs **)
3981 &elf_section_data (s)->local_dynrel);
3982 }
3983
3984 p = *head;
3985 if (p == NULL || p->sec != sec)
3986 {
3987 p = ((struct ppc_dyn_relocs *)
3988 bfd_alloc (htab->elf.dynobj,
3989 (bfd_size_type) sizeof *p));
3990 if (p == NULL)
3991 return FALSE;
3992 p->next = *head;
3993 *head = p;
3994 p->sec = sec;
3995 p->count = 0;
3996 p->pc_count = 0;
3997 }
3998
3999 p->count += 1;
4000 if (!MUST_BE_DYN_RELOC (r_type))
4001 p->pc_count += 1;
4002 }
4003 break;
4004
4005 default:
4006 break;
4007 }
4008 }
4009
4010 return TRUE;
4011 }
4012
4013 /* Return the section that should be marked against GC for a given
4014 relocation. */
4015
4016 static asection *
4017 ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
4018 asection *sec;
4019 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4020 Elf_Internal_Rela *rel;
4021 struct elf_link_hash_entry *h;
4022 Elf_Internal_Sym *sym;
4023 {
4024 asection *rsec = NULL;
4025
4026 if (h != NULL)
4027 {
4028 enum elf_ppc64_reloc_type r_type;
4029 struct ppc_link_hash_entry *fdh;
4030
4031 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4032 switch (r_type)
4033 {
4034 case R_PPC64_GNU_VTINHERIT:
4035 case R_PPC64_GNU_VTENTRY:
4036 break;
4037
4038 default:
4039 switch (h->root.type)
4040 {
4041 case bfd_link_hash_defined:
4042 case bfd_link_hash_defweak:
4043 fdh = (struct ppc_link_hash_entry *) h;
4044
4045 /* Function descriptor syms cause the associated
4046 function code sym section to be marked. */
4047 if (fdh->is_func_descriptor)
4048 rsec = fdh->oh->root.u.def.section;
4049
4050 /* Function entry syms return NULL if they are in .opd
4051 and are not ._start (or others undefined on the ld
4052 command line). Thus we avoid marking all function
4053 sections, as all functions are referenced in .opd. */
4054 else if ((fdh->oh != NULL
4055 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
4056 || ppc64_elf_section_data (sec)->opd.func_sec == NULL)
4057 rsec = h->root.u.def.section;
4058 break;
4059
4060 case bfd_link_hash_common:
4061 rsec = h->root.u.c.p->section;
4062 break;
4063
4064 default:
4065 break;
4066 }
4067 }
4068 }
4069 else
4070 {
4071 asection **opd_sym_section;
4072
4073 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4074 opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
4075 if (opd_sym_section != NULL)
4076 rsec = opd_sym_section[sym->st_value / 24];
4077 else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
4078 rsec = NULL;
4079 }
4080
4081 return rsec;
4082 }
4083
4084 /* Update the .got, .plt. and dynamic reloc reference counts for the
4085 section being removed. */
4086
4087 static bfd_boolean
4088 ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
4089 bfd *abfd;
4090 struct bfd_link_info *info;
4091 asection *sec;
4092 const Elf_Internal_Rela *relocs;
4093 {
4094 struct ppc_link_hash_table *htab;
4095 Elf_Internal_Shdr *symtab_hdr;
4096 struct elf_link_hash_entry **sym_hashes;
4097 struct got_entry **local_got_ents;
4098 const Elf_Internal_Rela *rel, *relend;
4099
4100 elf_section_data (sec)->local_dynrel = NULL;
4101
4102 htab = ppc_hash_table (info);
4103 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4104 sym_hashes = elf_sym_hashes (abfd);
4105 local_got_ents = elf_local_got_ents (abfd);
4106
4107 relend = relocs + sec->reloc_count;
4108 for (rel = relocs; rel < relend; rel++)
4109 {
4110 unsigned long r_symndx;
4111 enum elf_ppc64_reloc_type r_type;
4112 struct elf_link_hash_entry *h = NULL;
4113 char tls_type = 0;
4114
4115 r_symndx = ELF64_R_SYM (rel->r_info);
4116 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4117 if (r_symndx >= symtab_hdr->sh_info)
4118 {
4119 struct ppc_link_hash_entry *eh;
4120 struct ppc_dyn_relocs **pp;
4121 struct ppc_dyn_relocs *p;
4122
4123 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4124 eh = (struct ppc_link_hash_entry *) h;
4125
4126 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4127 if (p->sec == sec)
4128 {
4129 /* Everything must go for SEC. */
4130 *pp = p->next;
4131 break;
4132 }
4133 }
4134
4135 switch (r_type)
4136 {
4137 case R_PPC64_GOT_TLSLD16:
4138 case R_PPC64_GOT_TLSLD16_LO:
4139 case R_PPC64_GOT_TLSLD16_HI:
4140 case R_PPC64_GOT_TLSLD16_HA:
4141 htab->tlsld_got.refcount -= 1;
4142 tls_type = TLS_TLS | TLS_LD;
4143 goto dogot;
4144
4145 case R_PPC64_GOT_TLSGD16:
4146 case R_PPC64_GOT_TLSGD16_LO:
4147 case R_PPC64_GOT_TLSGD16_HI:
4148 case R_PPC64_GOT_TLSGD16_HA:
4149 tls_type = TLS_TLS | TLS_GD;
4150 goto dogot;
4151
4152 case R_PPC64_GOT_TPREL16_DS:
4153 case R_PPC64_GOT_TPREL16_LO_DS:
4154 case R_PPC64_GOT_TPREL16_HI:
4155 case R_PPC64_GOT_TPREL16_HA:
4156 tls_type = TLS_TLS | TLS_TPREL;
4157 goto dogot;
4158
4159 case R_PPC64_GOT_DTPREL16_DS:
4160 case R_PPC64_GOT_DTPREL16_LO_DS:
4161 case R_PPC64_GOT_DTPREL16_HI:
4162 case R_PPC64_GOT_DTPREL16_HA:
4163 tls_type = TLS_TLS | TLS_DTPREL;
4164 goto dogot;
4165
4166 case R_PPC64_GOT16:
4167 case R_PPC64_GOT16_DS:
4168 case R_PPC64_GOT16_HA:
4169 case R_PPC64_GOT16_HI:
4170 case R_PPC64_GOT16_LO:
4171 case R_PPC64_GOT16_LO_DS:
4172 dogot:
4173 {
4174 struct got_entry *ent;
4175
4176 if (h != NULL)
4177 ent = h->got.glist;
4178 else
4179 ent = local_got_ents[r_symndx];
4180
4181 for (; ent != NULL; ent = ent->next)
4182 if (ent->addend == rel->r_addend
4183 && ent->tls_type == tls_type)
4184 break;
4185 if (ent == NULL)
4186 abort ();
4187 if (ent->got.refcount > 0)
4188 ent->got.refcount -= 1;
4189 }
4190 break;
4191
4192 case R_PPC64_PLT16_HA:
4193 case R_PPC64_PLT16_HI:
4194 case R_PPC64_PLT16_LO:
4195 case R_PPC64_PLT32:
4196 case R_PPC64_PLT64:
4197 case R_PPC64_REL14:
4198 case R_PPC64_REL14_BRNTAKEN:
4199 case R_PPC64_REL14_BRTAKEN:
4200 case R_PPC64_REL24:
4201 if (h != NULL)
4202 {
4203 struct plt_entry *ent;
4204
4205 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4206 if (ent->addend == rel->r_addend)
4207 break;
4208 if (ent == NULL)
4209 abort ();
4210 if (ent->plt.refcount > 0)
4211 ent->plt.refcount -= 1;
4212 }
4213 break;
4214
4215 default:
4216 break;
4217 }
4218 }
4219 return TRUE;
4220 }
4221
4222 /* Called via elf_link_hash_traverse to transfer dynamic linking
4223 information on function code symbol entries to their corresponding
4224 function descriptor symbol entries. */
4225 static bfd_boolean
4226 func_desc_adjust (h, inf)
4227 struct elf_link_hash_entry *h;
4228 PTR inf;
4229 {
4230 struct bfd_link_info *info;
4231 struct ppc_link_hash_table *htab;
4232 struct plt_entry *ent;
4233
4234 if (h->root.type == bfd_link_hash_indirect)
4235 return TRUE;
4236
4237 if (h->root.type == bfd_link_hash_warning)
4238 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4239
4240 info = (struct bfd_link_info *) inf;
4241 htab = ppc_hash_table (info);
4242
4243 /* If this is a function code symbol, transfer dynamic linking
4244 information to the function descriptor symbol. */
4245 if (!((struct ppc_link_hash_entry *) h)->is_func)
4246 return TRUE;
4247
4248 if (h->root.type == bfd_link_hash_undefweak
4249 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
4250 htab->have_undefweak = TRUE;
4251
4252 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4253 if (ent->plt.refcount > 0)
4254 break;
4255 if (ent != NULL
4256 && h->root.root.string[0] == '.'
4257 && h->root.root.string[1] != '\0')
4258 {
4259 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
4260 bfd_boolean force_local;
4261
4262 /* Find the corresponding function descriptor symbol. Create it
4263 as undefined if necessary. */
4264
4265 if (fdh == NULL)
4266 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
4267 FALSE, FALSE, TRUE);
4268
4269 if (fdh == NULL
4270 && info->shared
4271 && (h->root.type == bfd_link_hash_undefined
4272 || h->root.type == bfd_link_hash_undefweak))
4273 {
4274 bfd *abfd;
4275 asymbol *newsym;
4276 struct bfd_link_hash_entry *bh;
4277
4278 abfd = h->root.u.undef.abfd;
4279 newsym = bfd_make_empty_symbol (abfd);
4280 newsym->name = h->root.root.string + 1;
4281 newsym->section = bfd_und_section_ptr;
4282 newsym->value = 0;
4283 newsym->flags = BSF_OBJECT;
4284 if (h->root.type == bfd_link_hash_undefweak)
4285 newsym->flags |= BSF_WEAK;
4286
4287 bh = &fdh->root;
4288 if ( !(_bfd_generic_link_add_one_symbol
4289 (info, abfd, newsym->name, newsym->flags,
4290 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4291 {
4292 return FALSE;
4293 }
4294 fdh = (struct elf_link_hash_entry *) bh;
4295 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4296 }
4297
4298 if (fdh != NULL
4299 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4300 && (info->shared
4301 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4302 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
4303 {
4304 if (fdh->dynindx == -1)
4305 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
4306 return FALSE;
4307 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
4308 & (ELF_LINK_HASH_REF_REGULAR
4309 | ELF_LINK_HASH_REF_DYNAMIC
4310 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4311 | ELF_LINK_NON_GOT_REF));
4312 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
4313 {
4314 fdh->plt.plist = h->plt.plist;
4315 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4316 }
4317 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
4318 ((struct ppc_link_hash_entry *) fdh)->oh = h;
4319 ((struct ppc_link_hash_entry *) h)->oh = fdh;
4320 }
4321
4322 /* Now that the info is on the function descriptor, clear the
4323 function code sym info. Any function code syms for which we
4324 don't have a definition in a regular file, we force local.
4325 This prevents a shared library from exporting syms that have
4326 been imported from another library. Function code syms that
4327 are really in the library we must leave global to prevent the
4328 linker dragging in a definition from a static library. */
4329 force_local = (info->shared
4330 && ((h->elf_link_hash_flags
4331 & ELF_LINK_HASH_DEF_REGULAR) == 0
4332 || fdh == NULL
4333 || (fdh->elf_link_hash_flags
4334 & ELF_LINK_HASH_DEF_REGULAR) == 0
4335 || (fdh->elf_link_hash_flags
4336 & ELF_LINK_FORCED_LOCAL) != 0));
4337 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4338 }
4339
4340 return TRUE;
4341 }
4342
4343 #define MIN_SAVE_FPR 14
4344 #define MAX_SAVE_FPR 31
4345
4346 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4347 this hook to a) provide some gcc support functions, and b) transfer
4348 dynamic linking information gathered so far on function code symbol
4349 entries, to their corresponding function descriptor symbol entries. */
4350 static bfd_boolean
4351 ppc64_elf_func_desc_adjust (obfd, info)
4352 bfd *obfd ATTRIBUTE_UNUSED;
4353 struct bfd_link_info *info;
4354 {
4355 struct ppc_link_hash_table *htab;
4356 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4357 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4358 unsigned int i;
4359 struct elf_link_hash_entry *h;
4360 bfd_byte *p;
4361 char sym[10];
4362
4363 htab = ppc_hash_table (info);
4364
4365 if (htab->sfpr == NULL)
4366 /* We don't have any relocs. */
4367 return TRUE;
4368
4369 /* First provide any missing ._savef* and ._restf* functions. */
4370 memcpy (sym, "._savef14", 10);
4371 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4372 {
4373 sym[7] = i / 10 + '0';
4374 sym[8] = i % 10 + '0';
4375 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4376 if (h != NULL
4377 && h->root.type == bfd_link_hash_undefined)
4378 {
4379 if (lowest_savef > i)
4380 lowest_savef = i;
4381 h->root.type = bfd_link_hash_defined;
4382 h->root.u.def.section = htab->sfpr;
4383 h->root.u.def.value = (i - lowest_savef) * 4;
4384 h->type = STT_FUNC;
4385 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4386 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
4387 }
4388 }
4389
4390 memcpy (sym, "._restf14", 10);
4391 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4392 {
4393 sym[7] = i / 10 + '0';
4394 sym[8] = i % 10 + '0';
4395 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4396 if (h != NULL
4397 && h->root.type == bfd_link_hash_undefined)
4398 {
4399 if (lowest_restf > i)
4400 lowest_restf = i;
4401 h->root.type = bfd_link_hash_defined;
4402 h->root.u.def.section = htab->sfpr;
4403 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4404 + (i - lowest_restf) * 4);
4405 h->type = STT_FUNC;
4406 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4407 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
4408 }
4409 }
4410
4411 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
4412
4413 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4414 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4415
4416 if (htab->sfpr->_raw_size == 0)
4417 {
4418 if (!htab->have_undefweak)
4419 {
4420 _bfd_strip_section_from_output (info, htab->sfpr);
4421 return TRUE;
4422 }
4423
4424 htab->sfpr->_raw_size = 4;
4425 }
4426
4427 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
4428 if (p == NULL)
4429 return FALSE;
4430 htab->sfpr->contents = p;
4431
4432 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4433 {
4434 unsigned int fpr = i << 21;
4435 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4436 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4437 p += 4;
4438 }
4439 if (lowest_savef <= MAX_SAVE_FPR)
4440 {
4441 bfd_put_32 (htab->elf.dynobj, BLR, p);
4442 p += 4;
4443 }
4444
4445 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4446 {
4447 unsigned int fpr = i << 21;
4448 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4449 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4450 p += 4;
4451 }
4452 if (lowest_restf <= MAX_SAVE_FPR
4453 || htab->sfpr->_raw_size == 4)
4454 {
4455 bfd_put_32 (htab->elf.dynobj, BLR, p);
4456 }
4457
4458 return TRUE;
4459 }
4460
4461 /* Adjust a symbol defined by a dynamic object and referenced by a
4462 regular object. The current definition is in some section of the
4463 dynamic object, but we're not including those sections. We have to
4464 change the definition to something the rest of the link can
4465 understand. */
4466
4467 static bfd_boolean
4468 ppc64_elf_adjust_dynamic_symbol (info, h)
4469 struct bfd_link_info *info;
4470 struct elf_link_hash_entry *h;
4471 {
4472 struct ppc_link_hash_table *htab;
4473 struct ppc_link_hash_entry * eh;
4474 struct ppc_dyn_relocs *p;
4475 asection *s;
4476 unsigned int power_of_two;
4477
4478 htab = ppc_hash_table (info);
4479
4480 /* Deal with function syms. */
4481 if (h->type == STT_FUNC
4482 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4483 {
4484 /* Clear procedure linkage table information for any symbol that
4485 won't need a .plt entry. */
4486 struct plt_entry *ent;
4487 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4488 if (ent->plt.refcount > 0)
4489 break;
4490 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4491 || ent == NULL
4492 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4493 || (! info->shared
4494 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4495 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
4496 {
4497 h->plt.plist = NULL;
4498 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4499 }
4500 return TRUE;
4501 }
4502 else
4503 h->plt.plist = NULL;
4504
4505 /* If this is a weak symbol, and there is a real definition, the
4506 processor independent code will have arranged for us to see the
4507 real definition first, and we can just use the same value. */
4508 if (h->weakdef != NULL)
4509 {
4510 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4511 || h->weakdef->root.type == bfd_link_hash_defweak);
4512 h->root.u.def.section = h->weakdef->root.u.def.section;
4513 h->root.u.def.value = h->weakdef->root.u.def.value;
4514 return TRUE;
4515 }
4516
4517 /* This is a reference to a symbol defined by a dynamic object which
4518 is not a function. */
4519
4520 /* If we are creating a shared library, we must presume that the
4521 only references to the symbol are via the global offset table.
4522 For such cases we need not do anything here; the relocations will
4523 be handled correctly by relocate_section. */
4524 if (info->shared)
4525 return TRUE;
4526
4527 /* If there are no references to this symbol that do not use the
4528 GOT, we don't need to generate a copy reloc. */
4529 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4530 return TRUE;
4531
4532 eh = (struct ppc_link_hash_entry *) h;
4533 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4534 {
4535 s = p->sec->output_section;
4536 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4537 break;
4538 }
4539
4540 /* If we didn't find any dynamic relocs in read-only sections, then
4541 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4542 if (p == NULL)
4543 {
4544 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4545 return TRUE;
4546 }
4547
4548 /* We must allocate the symbol in our .dynbss section, which will
4549 become part of the .bss section of the executable. There will be
4550 an entry for this symbol in the .dynsym section. The dynamic
4551 object will contain position independent code, so all references
4552 from the dynamic object to this symbol will go through the global
4553 offset table. The dynamic linker will use the .dynsym entry to
4554 determine the address it must put in the global offset table, so
4555 both the dynamic object and the regular object will refer to the
4556 same memory location for the variable. */
4557
4558 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4559 to copy the initial value out of the dynamic object and into the
4560 runtime process image. We need to remember the offset into the
4561 .rela.bss section we are going to use. */
4562 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4563 {
4564 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
4565 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4566 }
4567
4568 /* We need to figure out the alignment required for this symbol. I
4569 have no idea how ELF linkers handle this. */
4570 power_of_two = bfd_log2 (h->size);
4571 if (power_of_two > 4)
4572 power_of_two = 4;
4573
4574 /* Apply the required alignment. */
4575 s = htab->sdynbss;
4576 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
4577 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4578 {
4579 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4580 return FALSE;
4581 }
4582
4583 /* Define the symbol as being at this point in the section. */
4584 h->root.u.def.section = s;
4585 h->root.u.def.value = s->_raw_size;
4586
4587 /* Increment the section size to make room for the symbol. */
4588 s->_raw_size += h->size;
4589
4590 return TRUE;
4591 }
4592
4593 /* If given a function descriptor symbol, hide both the function code
4594 sym and the descriptor. */
4595 static void
4596 ppc64_elf_hide_symbol (info, h, force_local)
4597 struct bfd_link_info *info;
4598 struct elf_link_hash_entry *h;
4599 bfd_boolean force_local;
4600 {
4601 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4602
4603 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
4604 {
4605 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
4606
4607 if (fh == NULL)
4608 {
4609 const char *p, *q;
4610 struct ppc_link_hash_table *htab;
4611 char save;
4612
4613 /* We aren't supposed to use alloca in BFD because on
4614 systems which do not have alloca the version in libiberty
4615 calls xmalloc, which might cause the program to crash
4616 when it runs out of memory. This function doesn't have a
4617 return status, so there's no way to gracefully return an
4618 error. So cheat. We know that string[-1] can be safely
4619 dereferenced; It's either a string in an ELF string
4620 table, or allocated in an objalloc structure. */
4621
4622 p = h->root.root.string - 1;
4623 save = *p;
4624 *(char *) p = '.';
4625 htab = ppc_hash_table (info);
4626 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4627 *(char *) p = save;
4628
4629 /* Unfortunately, if it so happens that the string we were
4630 looking for was allocated immediately before this string,
4631 then we overwrote the string terminator. That's the only
4632 reason the lookup should fail. */
4633 if (fh == NULL)
4634 {
4635 q = h->root.root.string + strlen (h->root.root.string);
4636 while (q >= h->root.root.string && *q == *p)
4637 --q, --p;
4638 if (q < h->root.root.string && *p == '.')
4639 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4640 }
4641 if (fh != NULL)
4642 {
4643 ((struct ppc_link_hash_entry *) h)->oh = fh;
4644 ((struct ppc_link_hash_entry *) fh)->oh = h;
4645 }
4646 }
4647 if (fh != NULL)
4648 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
4649 }
4650 }
4651
4652 static bfd_boolean
4653 get_sym_h (hp, symp, symsecp, tls_maskp, locsymsp, r_symndx, ibfd)
4654 struct elf_link_hash_entry **hp;
4655 Elf_Internal_Sym **symp;
4656 asection **symsecp;
4657 char **tls_maskp;
4658 Elf_Internal_Sym **locsymsp;
4659 unsigned long r_symndx;
4660 bfd *ibfd;
4661 {
4662 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4663
4664 if (r_symndx >= symtab_hdr->sh_info)
4665 {
4666 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4667 struct elf_link_hash_entry *h;
4668
4669 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4670 while (h->root.type == bfd_link_hash_indirect
4671 || h->root.type == bfd_link_hash_warning)
4672 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4673
4674 if (hp != NULL)
4675 *hp = h;
4676
4677 if (symp != NULL)
4678 *symp = NULL;
4679
4680 if (symsecp != NULL)
4681 {
4682 asection *symsec = NULL;
4683 if (h->root.type == bfd_link_hash_defined
4684 || h->root.type == bfd_link_hash_defweak)
4685 symsec = h->root.u.def.section;
4686 *symsecp = symsec;
4687 }
4688
4689 if (tls_maskp != NULL)
4690 {
4691 struct ppc_link_hash_entry *eh;
4692
4693 eh = (struct ppc_link_hash_entry *) h;
4694 *tls_maskp = &eh->tls_mask;
4695 }
4696 }
4697 else
4698 {
4699 Elf_Internal_Sym *sym;
4700 Elf_Internal_Sym *locsyms = *locsymsp;
4701
4702 if (locsyms == NULL)
4703 {
4704 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4705 if (locsyms == NULL)
4706 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4707 symtab_hdr->sh_info,
4708 0, NULL, NULL, NULL);
4709 if (locsyms == NULL)
4710 return FALSE;
4711 *locsymsp = locsyms;
4712 }
4713 sym = locsyms + r_symndx;
4714
4715 if (hp != NULL)
4716 *hp = NULL;
4717
4718 if (symp != NULL)
4719 *symp = sym;
4720
4721 if (symsecp != NULL)
4722 {
4723 asection *symsec = NULL;
4724 if ((sym->st_shndx != SHN_UNDEF
4725 && sym->st_shndx < SHN_LORESERVE)
4726 || sym->st_shndx > SHN_HIRESERVE)
4727 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4728 *symsecp = symsec;
4729 }
4730
4731 if (tls_maskp != NULL)
4732 {
4733 struct got_entry **lgot_ents;
4734 char *tls_mask;
4735
4736 tls_mask = NULL;
4737 lgot_ents = elf_local_got_ents (ibfd);
4738 if (lgot_ents != NULL)
4739 {
4740 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4741 tls_mask = &lgot_masks[r_symndx];
4742 }
4743 *tls_maskp = tls_mask;
4744 }
4745 }
4746 return TRUE;
4747 }
4748
4749 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4750 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4751 type suitable for optimization, and 1 otherwise. */
4752
4753 static int
4754 get_tls_mask (tls_maskp, locsymsp, rel, ibfd)
4755 char **tls_maskp;
4756 Elf_Internal_Sym **locsymsp;
4757 const Elf_Internal_Rela *rel;
4758 bfd *ibfd;
4759 {
4760 unsigned long r_symndx;
4761 unsigned int next_r;
4762 struct elf_link_hash_entry *h;
4763 Elf_Internal_Sym *sym;
4764 asection *sec;
4765 bfd_vma off;
4766
4767 r_symndx = ELF64_R_SYM (rel->r_info);
4768 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4769 return 0;
4770
4771 if ((*tls_maskp != NULL && **tls_maskp != 0)
4772 || sec == NULL
4773 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4774 return 1;
4775
4776 /* Look inside a TOC section too. */
4777 if (h != NULL)
4778 {
4779 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4780 off = h->root.u.def.value;
4781 }
4782 else
4783 off = sym->st_value;
4784 off += rel->r_addend;
4785 BFD_ASSERT (off % 8 == 0);
4786 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4787 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4788 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4789 return 0;
4790 if (h == NULL
4791 || h->root.type == bfd_link_hash_defined
4792 || h->root.type == bfd_link_hash_defweak)
4793 {
4794 if (next_r == (unsigned) -1)
4795 return 2;
4796 if (next_r == (unsigned) -2
4797 && (h == NULL
4798 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4799 return 3;
4800 }
4801 return 1;
4802 }
4803
4804 bfd_boolean
4805 ppc64_elf_edit_opd (obfd, info)
4806 bfd *obfd;
4807 struct bfd_link_info *info;
4808 {
4809 bfd *ibfd;
4810
4811 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4812 {
4813 asection *sec;
4814 Elf_Internal_Rela *relstart, *rel, *relend;
4815 Elf_Internal_Shdr *symtab_hdr;
4816 Elf_Internal_Sym *local_syms;
4817 struct elf_link_hash_entry **sym_hashes;
4818 bfd_vma offset;
4819 bfd_size_type amt;
4820 long *adjust;
4821 bfd_boolean need_edit;
4822
4823 sec = bfd_get_section_by_name (ibfd, ".opd");
4824 if (sec == NULL)
4825 continue;
4826
4827 amt = sec->_raw_size * sizeof (long) / 24;
4828 adjust = ppc64_elf_section_data (sec)->opd.adjust;
4829 if (adjust == NULL)
4830 {
4831 /* Must be a ld -r link. ie. check_relocs hasn't been
4832 called. */
4833 adjust = (long *) bfd_zalloc (obfd, amt);
4834 ppc64_elf_section_data (sec)->opd.adjust = adjust;
4835 }
4836 memset (adjust, 0, (size_t) amt);
4837
4838 if (sec->output_section == bfd_abs_section_ptr)
4839 continue;
4840
4841 /* Look through the section relocs. */
4842 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
4843 continue;
4844
4845 local_syms = NULL;
4846 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4847 sym_hashes = elf_sym_hashes (ibfd);
4848
4849 /* Read the relocations. */
4850 relstart = _bfd_elf64_link_read_relocs (ibfd, sec, (PTR) NULL,
4851 (Elf_Internal_Rela *) NULL,
4852 info->keep_memory);
4853 if (relstart == NULL)
4854 return FALSE;
4855
4856 /* First run through the relocs to check they are sane, and to
4857 determine whether we need to edit this opd section. */
4858 need_edit = FALSE;
4859 offset = 0;
4860 relend = relstart + sec->reloc_count;
4861 for (rel = relstart; rel < relend; rel++)
4862 {
4863 enum elf_ppc64_reloc_type r_type;
4864 unsigned long r_symndx;
4865 asection *sym_sec;
4866 struct elf_link_hash_entry *h;
4867 Elf_Internal_Sym *sym;
4868
4869 /* .opd contains a regular array of 24 byte entries. We're
4870 only interested in the reloc pointing to a function entry
4871 point. */
4872 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4873 if (r_type == R_PPC64_TOC)
4874 continue;
4875
4876 if (r_type != R_PPC64_ADDR64)
4877 {
4878 (*_bfd_error_handler)
4879 (_("%s: unexpected reloc type %u in .opd section"),
4880 bfd_archive_filename (ibfd), r_type);
4881 need_edit = FALSE;
4882 break;
4883 }
4884
4885 if (rel + 1 >= relend)
4886 continue;
4887 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
4888 if (r_type != R_PPC64_TOC)
4889 continue;
4890
4891 if (rel->r_offset != offset)
4892 {
4893 /* If someone messes with .opd alignment then after a
4894 "ld -r" we might have padding in the middle of .opd.
4895 Also, there's nothing to prevent someone putting
4896 something silly in .opd with the assembler. No .opd
4897 optimization for them! */
4898 (*_bfd_error_handler)
4899 (_("%s: .opd is not a regular array of opd entries"),
4900 bfd_archive_filename (ibfd));
4901 need_edit = FALSE;
4902 break;
4903 }
4904
4905 r_symndx = ELF64_R_SYM (rel->r_info);
4906 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
4907 r_symndx, ibfd))
4908 goto error_free_rel;
4909
4910 if (sym_sec == NULL || sym_sec->owner == NULL)
4911 {
4912 const char *sym_name;
4913 if (h != NULL)
4914 sym_name = h->root.root.string;
4915 else
4916 sym_name = bfd_elf_local_sym_name (ibfd, sym);
4917
4918 (*_bfd_error_handler)
4919 (_("%s: undefined sym `%s' in .opd section"),
4920 bfd_archive_filename (ibfd),
4921 sym_name);
4922 need_edit = FALSE;
4923 break;
4924 }
4925
4926 /* opd entries are always for functions defined in the
4927 current input bfd. If the symbol isn't defined in the
4928 input bfd, then we won't be using the function in this
4929 bfd; It must be defined in a linkonce section in another
4930 bfd, or is weak. It's also possible that we are
4931 discarding the function due to a linker script /DISCARD/,
4932 which we test for via the output_section. */
4933 if (sym_sec->owner != ibfd
4934 || sym_sec->output_section == bfd_abs_section_ptr)
4935 need_edit = TRUE;
4936
4937 offset += 24;
4938 }
4939
4940 if (need_edit)
4941 {
4942 Elf_Internal_Rela *write_rel;
4943 bfd_byte *rptr, *wptr;
4944 bfd_boolean skip;
4945
4946 /* This seems a waste of time as input .opd sections are all
4947 zeros as generated by gcc, but I suppose there's no reason
4948 this will always be so. We might start putting something in
4949 the third word of .opd entries. */
4950 if ((sec->flags & SEC_IN_MEMORY) == 0)
4951 {
4952 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
4953 if (loc == NULL
4954 || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
4955 sec->_raw_size))
4956 {
4957 if (local_syms != NULL
4958 && symtab_hdr->contents != (unsigned char *) local_syms)
4959 free (local_syms);
4960 error_free_rel:
4961 if (elf_section_data (sec)->relocs != relstart)
4962 free (relstart);
4963 return FALSE;
4964 }
4965 sec->contents = loc;
4966 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
4967 }
4968
4969 elf_section_data (sec)->relocs = relstart;
4970
4971 wptr = sec->contents;
4972 rptr = sec->contents;
4973 write_rel = relstart;
4974 skip = FALSE;
4975 offset = 0;
4976 for (rel = relstart; rel < relend; rel++)
4977 {
4978 if (rel->r_offset == offset)
4979 {
4980 unsigned long r_symndx;
4981 asection *sym_sec;
4982 struct elf_link_hash_entry *h;
4983 Elf_Internal_Sym *sym;
4984
4985 r_symndx = ELF64_R_SYM (rel->r_info);
4986 get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
4987 r_symndx, ibfd);
4988
4989 skip = (sym_sec->owner != ibfd
4990 || sym_sec->output_section == bfd_abs_section_ptr);
4991 if (skip)
4992 {
4993 if (h != NULL && sym_sec->owner == ibfd)
4994 {
4995 /* Arrange for the function descriptor sym
4996 to be dropped. */
4997 struct ppc_link_hash_entry *fdh;
4998 struct ppc_link_hash_entry *fh;
4999
5000 fh = (struct ppc_link_hash_entry *) h;
5001 fdh = (struct ppc_link_hash_entry *) fh->oh;
5002 if (fdh == NULL)
5003 {
5004 const char *fd_name;
5005 struct ppc_link_hash_table *htab;
5006
5007 fd_name = h->root.root.string + 1;
5008 htab = ppc_hash_table (info);
5009 fdh = (struct ppc_link_hash_entry *)
5010 elf_link_hash_lookup (&htab->elf, fd_name,
5011 FALSE, FALSE, FALSE);
5012 fdh->is_func_descriptor = 1;
5013 fdh->oh = &fh->elf;
5014 fh->is_func = 1;
5015 fh->oh = &fdh->elf;
5016 }
5017
5018 fdh->elf.root.u.def.value = 0;
5019 fdh->elf.root.u.def.section = sym_sec;
5020 }
5021 }
5022 else
5023 {
5024 /* We'll be keeping this opd entry. */
5025
5026 if (h != NULL)
5027 {
5028 /* Redefine the function descriptor symbol
5029 to this location in the opd section.
5030 We've checked above that opd relocs are
5031 ordered. */
5032 struct ppc_link_hash_entry *fdh;
5033 struct ppc_link_hash_entry *fh;
5034
5035 fh = (struct ppc_link_hash_entry *) h;
5036 fdh = (struct ppc_link_hash_entry *) fh->oh;
5037 if (fdh == NULL)
5038 {
5039 const char *fd_name;
5040 struct ppc_link_hash_table *htab;
5041
5042 fd_name = h->root.root.string + 1;
5043 htab = ppc_hash_table (info);
5044 fdh = (struct ppc_link_hash_entry *)
5045 elf_link_hash_lookup (&htab->elf, fd_name,
5046 FALSE, FALSE, FALSE);
5047 fdh->is_func_descriptor = 1;
5048 fdh->oh = &fh->elf;
5049 fh->is_func = 1;
5050 fh->oh = &fdh->elf;
5051 }
5052
5053 fdh->elf.root.u.def.value = wptr - sec->contents;
5054 }
5055 else
5056 {
5057 /* Local syms are a bit tricky. We could
5058 tweak them as they can be cached, but
5059 we'd need to look through the local syms
5060 for the function descriptor sym which we
5061 don't have at the moment. So keep an
5062 array of adjustments. */
5063 adjust[rel->r_offset / 24] = wptr - rptr;
5064 }
5065
5066 if (wptr != rptr)
5067 memcpy (wptr, rptr, 24);
5068 wptr += 24;
5069 }
5070 rptr += 24;
5071 offset += 24;
5072 }
5073
5074 /* We need to adjust any reloc offsets to point to the
5075 new opd entries. While we're at it, we may as well
5076 remove redundant relocs. */
5077 if (!skip)
5078 {
5079 rel->r_offset += wptr - rptr;
5080 if (write_rel != rel)
5081 memcpy (write_rel, rel, sizeof (*rel));
5082 ++write_rel;
5083 }
5084 }
5085
5086 sec->_cooked_size = wptr - sec->contents;
5087 sec->reloc_count = write_rel - relstart;
5088 /* Fudge the size too, as this is used later in
5089 elf_bfd_final_link if we are emitting relocs. */
5090 elf_section_data (sec)->rel_hdr.sh_size
5091 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5092 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5093 }
5094 else if (elf_section_data (sec)->relocs != relstart)
5095 free (relstart);
5096
5097 if (local_syms != NULL
5098 && symtab_hdr->contents != (unsigned char *) local_syms)
5099 {
5100 if (!info->keep_memory)
5101 free (local_syms);
5102 else
5103 symtab_hdr->contents = (unsigned char *) local_syms;
5104 }
5105 }
5106
5107 return TRUE;
5108 }
5109
5110 /* Set htab->tls_sec. */
5111
5112 bfd_boolean
5113 ppc64_elf_tls_setup (obfd, info)
5114 bfd *obfd;
5115 struct bfd_link_info *info;
5116 {
5117 asection *tls;
5118 struct ppc_link_hash_table *htab;
5119
5120 for (tls = obfd->sections; tls != NULL; tls = tls->next)
5121 if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
5122 == (SEC_THREAD_LOCAL | SEC_LOAD))
5123 break;
5124
5125 htab = ppc_hash_table (info);
5126 htab->tls_sec = tls;
5127
5128 if (htab->tls_get_addr != NULL)
5129 {
5130 struct elf_link_hash_entry *h = htab->tls_get_addr;
5131
5132 while (h->root.type == bfd_link_hash_indirect
5133 || h->root.type == bfd_link_hash_warning)
5134 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5135
5136 htab->tls_get_addr = h;
5137 }
5138
5139 return tls != NULL;
5140 }
5141
5142 /* Run through all the TLS relocs looking for optimization
5143 opportunities. The linker has been hacked (see ppc64elf.em) to do
5144 a preliminary section layout so that we know the TLS segment
5145 offsets. We can't optimize earlier because some optimizations need
5146 to know the tp offset, and we need to optimize before allocating
5147 dynamic relocations. */
5148
5149 bfd_boolean
5150 ppc64_elf_tls_optimize (obfd, info)
5151 bfd *obfd ATTRIBUTE_UNUSED;
5152 struct bfd_link_info *info;
5153 {
5154 bfd *ibfd;
5155 asection *sec;
5156 struct ppc_link_hash_table *htab;
5157
5158 if (info->relocateable || info->shared)
5159 return TRUE;
5160
5161 htab = ppc_hash_table (info);
5162 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5163 {
5164 Elf_Internal_Sym *locsyms = NULL;
5165
5166 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5167 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5168 {
5169 Elf_Internal_Rela *relstart, *rel, *relend;
5170 int expecting_tls_get_addr;
5171
5172 /* Read the relocations. */
5173 relstart = _bfd_elf64_link_read_relocs (ibfd, sec, (PTR) NULL,
5174 (Elf_Internal_Rela *) NULL,
5175 info->keep_memory);
5176 if (relstart == NULL)
5177 return FALSE;
5178
5179 expecting_tls_get_addr = 0;
5180 relend = relstart + sec->reloc_count;
5181 for (rel = relstart; rel < relend; rel++)
5182 {
5183 enum elf_ppc64_reloc_type r_type;
5184 unsigned long r_symndx;
5185 struct elf_link_hash_entry *h;
5186 Elf_Internal_Sym *sym;
5187 asection *sym_sec;
5188 char *tls_mask;
5189 char tls_set, tls_clear, tls_type = 0;
5190 bfd_vma value;
5191 bfd_boolean ok_tprel, is_local;
5192
5193 r_symndx = ELF64_R_SYM (rel->r_info);
5194 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5195 r_symndx, ibfd))
5196 {
5197 err_free_rel:
5198 if (elf_section_data (sec)->relocs != relstart)
5199 free (relstart);
5200 if (locsyms != NULL
5201 && (elf_tdata (ibfd)->symtab_hdr.contents
5202 != (unsigned char *) locsyms))
5203 free (locsyms);
5204 return FALSE;
5205 }
5206
5207 if (h != NULL)
5208 {
5209 if (h->root.type != bfd_link_hash_defined
5210 && h->root.type != bfd_link_hash_defweak)
5211 continue;
5212 value = h->root.u.def.value;
5213 }
5214 else
5215 value = sym->st_value;
5216
5217 ok_tprel = FALSE;
5218 is_local = FALSE;
5219 if (h == NULL
5220 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5221 {
5222 is_local = TRUE;
5223 value += sym_sec->output_offset;
5224 value += sym_sec->output_section->vma;
5225 value -= htab->tls_sec->vma;
5226 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5227 < (bfd_vma) 1 << 32);
5228 }
5229
5230 r_type
5231 = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
5232 switch (r_type)
5233 {
5234 case R_PPC64_GOT_TLSLD16:
5235 case R_PPC64_GOT_TLSLD16_LO:
5236 case R_PPC64_GOT_TLSLD16_HI:
5237 case R_PPC64_GOT_TLSLD16_HA:
5238 /* These relocs should never be against a symbol
5239 defined in a shared lib. Leave them alone if
5240 that turns out to be the case. */
5241 htab->tlsld_got.refcount -= 1;
5242 if (!is_local)
5243 continue;
5244
5245 /* LD -> LE */
5246 tls_set = 0;
5247 tls_clear = TLS_LD;
5248 tls_type = TLS_TLS | TLS_LD;
5249 expecting_tls_get_addr = 1;
5250 break;
5251
5252 case R_PPC64_GOT_TLSGD16:
5253 case R_PPC64_GOT_TLSGD16_LO:
5254 case R_PPC64_GOT_TLSGD16_HI:
5255 case R_PPC64_GOT_TLSGD16_HA:
5256 if (ok_tprel)
5257 /* GD -> LE */
5258 tls_set = 0;
5259 else
5260 /* GD -> IE */
5261 tls_set = TLS_TLS | TLS_TPRELGD;
5262 tls_clear = TLS_GD;
5263 tls_type = TLS_TLS | TLS_GD;
5264 expecting_tls_get_addr = 1;
5265 break;
5266
5267 case R_PPC64_GOT_TPREL16_DS:
5268 case R_PPC64_GOT_TPREL16_LO_DS:
5269 case R_PPC64_GOT_TPREL16_HI:
5270 case R_PPC64_GOT_TPREL16_HA:
5271 expecting_tls_get_addr = 0;
5272 if (ok_tprel)
5273 {
5274 /* IE -> LE */
5275 tls_set = 0;
5276 tls_clear = TLS_TPREL;
5277 tls_type = TLS_TLS | TLS_TPREL;
5278 break;
5279 }
5280 else
5281 continue;
5282
5283 case R_PPC64_REL14:
5284 case R_PPC64_REL14_BRTAKEN:
5285 case R_PPC64_REL14_BRNTAKEN:
5286 case R_PPC64_REL24:
5287 if (h != NULL
5288 && h == htab->tls_get_addr)
5289 {
5290 if (!expecting_tls_get_addr
5291 && rel != relstart
5292 && ((ELF64_R_TYPE (rel[-1].r_info)
5293 == R_PPC64_TOC16)
5294 || (ELF64_R_TYPE (rel[-1].r_info)
5295 == R_PPC64_TOC16_LO)))
5296 {
5297 /* Check for toc tls entries. */
5298 char *toc_tls;
5299 int retval;
5300
5301 retval = get_tls_mask (&toc_tls, &locsyms,
5302 rel - 1, ibfd);
5303 if (retval == 0)
5304 goto err_free_rel;
5305 if (toc_tls != NULL)
5306 expecting_tls_get_addr = retval > 1;
5307 }
5308
5309 if (expecting_tls_get_addr)
5310 {
5311 struct plt_entry *ent;
5312 for (ent = h->plt.plist; ent; ent = ent->next)
5313 if (ent->addend == 0)
5314 {
5315 if (ent->plt.refcount > 0)
5316 ent->plt.refcount -= 1;
5317 break;
5318 }
5319 }
5320 }
5321 expecting_tls_get_addr = 0;
5322 continue;
5323
5324 case R_PPC64_TPREL64:
5325 expecting_tls_get_addr = 0;
5326 if (ok_tprel)
5327 {
5328 /* IE -> LE */
5329 tls_set = TLS_EXPLICIT;
5330 tls_clear = TLS_TPREL;
5331 break;
5332 }
5333 else
5334 continue;
5335
5336 case R_PPC64_DTPMOD64:
5337 expecting_tls_get_addr = 0;
5338 if (rel + 1 < relend
5339 && (rel[1].r_info
5340 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5341 && rel[1].r_offset == rel->r_offset + 8)
5342 {
5343 if (ok_tprel)
5344 /* GD -> LE */
5345 tls_set = TLS_EXPLICIT | TLS_GD;
5346 else
5347 /* GD -> IE */
5348 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5349 tls_clear = TLS_GD;
5350 }
5351 else
5352 {
5353 if (!is_local)
5354 continue;
5355
5356 /* LD -> LE */
5357 tls_set = TLS_EXPLICIT;
5358 tls_clear = TLS_LD;
5359 }
5360 break;
5361
5362 default:
5363 expecting_tls_get_addr = 0;
5364 continue;
5365 }
5366
5367 if ((tls_set & TLS_EXPLICIT) == 0)
5368 {
5369 struct got_entry *ent;
5370
5371 /* Adjust got entry for this reloc. */
5372 if (h != NULL)
5373 ent = h->got.glist;
5374 else
5375 ent = elf_local_got_ents (ibfd)[r_symndx];
5376
5377 for (; ent != NULL; ent = ent->next)
5378 if (ent->addend == rel->r_addend
5379 && ent->tls_type == tls_type)
5380 break;
5381 if (ent == NULL)
5382 abort ();
5383
5384 if (tls_set == 0)
5385 {
5386 /* We managed to get rid of a got entry. */
5387 if (ent->got.refcount > 0)
5388 ent->got.refcount -= 1;
5389 }
5390 }
5391 else if (h != NULL)
5392 {
5393 struct ppc_link_hash_entry * eh;
5394 struct ppc_dyn_relocs **pp;
5395 struct ppc_dyn_relocs *p;
5396
5397 /* Adjust dynamic relocs. */
5398 eh = (struct ppc_link_hash_entry *) h;
5399 for (pp = &eh->dyn_relocs;
5400 (p = *pp) != NULL;
5401 pp = &p->next)
5402 if (p->sec == sec)
5403 {
5404 /* If we got rid of a DTPMOD/DTPREL reloc
5405 pair then we'll lose one or two dyn
5406 relocs. */
5407 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5408 p->count -= 1;
5409 p->count -= 1;
5410 if (p->count == 0)
5411 *pp = p->next;
5412 break;
5413 }
5414 }
5415
5416 *tls_mask |= tls_set;
5417 *tls_mask &= ~tls_clear;
5418 }
5419
5420 if (elf_section_data (sec)->relocs != relstart)
5421 free (relstart);
5422 }
5423
5424 if (locsyms != NULL
5425 && (elf_tdata (ibfd)->symtab_hdr.contents
5426 != (unsigned char *) locsyms))
5427 {
5428 if (!info->keep_memory)
5429 free (locsyms);
5430 else
5431 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5432 }
5433 }
5434 return TRUE;
5435 }
5436
5437 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5438 will be called from elflink.h. If elflink.h doesn't call our
5439 finish_dynamic_symbol routine, we'll need to do something about
5440 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5441 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
5442 ((DYN) \
5443 && ((INFO)->shared \
5444 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5445 && ((H)->dynindx != -1 \
5446 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5447
5448 /* Allocate space in .plt, .got and associated reloc sections for
5449 dynamic relocs. */
5450
5451 static bfd_boolean
5452 allocate_dynrelocs (h, inf)
5453 struct elf_link_hash_entry *h;
5454 PTR inf;
5455 {
5456 struct bfd_link_info *info;
5457 struct ppc_link_hash_table *htab;
5458 asection *s;
5459 struct ppc_link_hash_entry *eh;
5460 struct ppc_dyn_relocs *p;
5461 struct got_entry *gent;
5462
5463 if (h->root.type == bfd_link_hash_indirect)
5464 return TRUE;
5465
5466 if (h->root.type == bfd_link_hash_warning)
5467 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5468
5469 info = (struct bfd_link_info *) inf;
5470 htab = ppc_hash_table (info);
5471
5472 if (htab->elf.dynamic_sections_created
5473 && h->dynindx != -1
5474 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
5475 {
5476 struct plt_entry *pent;
5477 bfd_boolean doneone = FALSE;
5478 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5479 if (pent->plt.refcount > 0)
5480 {
5481 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5482
5483 /* If this is the first .plt entry, make room for the special
5484 first entry. */
5485 s = htab->splt;
5486 if (s->_raw_size == 0)
5487 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
5488
5489 pent->plt.offset = s->_raw_size;
5490
5491 /* Make room for this entry. */
5492 s->_raw_size += PLT_ENTRY_SIZE;
5493
5494 /* Make room for the .glink code. */
5495 s = htab->sglink;
5496 if (s->_raw_size == 0)
5497 s->_raw_size += GLINK_CALL_STUB_SIZE;
5498 /* We need bigger stubs past index 32767. */
5499 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5500 s->_raw_size += 4;
5501 s->_raw_size += 2*4;
5502
5503 /* We also need to make an entry in the .rela.plt section. */
5504 s = htab->srelplt;
5505 s->_raw_size += sizeof (Elf64_External_Rela);
5506 doneone = TRUE;
5507 }
5508 else
5509 pent->plt.offset = (bfd_vma) -1;
5510 if (!doneone)
5511 {
5512 h->plt.plist = NULL;
5513 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5514 }
5515 }
5516 else
5517 {
5518 h->plt.plist = NULL;
5519 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5520 }
5521
5522 eh = (struct ppc_link_hash_entry *) h;
5523 /* Run through the TLS GD got entries first if we're changing them
5524 to TPREL. */
5525 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5526 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5527 if (gent->got.refcount > 0
5528 && (gent->tls_type & TLS_GD) != 0)
5529 {
5530 /* This was a GD entry that has been converted to TPREL. If
5531 there happens to be a TPREL entry we can use that one. */
5532 struct got_entry *ent;
5533 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5534 if (ent->got.refcount > 0
5535 && (ent->tls_type & TLS_TPREL) != 0
5536 && ent->addend == gent->addend)
5537 {
5538 gent->got.refcount = 0;
5539 break;
5540 }
5541
5542 /* If not, then we'll be using our own TPREL entry. */
5543 if (gent->got.refcount != 0)
5544 gent->tls_type = TLS_TLS | TLS_TPREL;
5545 }
5546
5547 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5548 if (gent->got.refcount > 0)
5549 {
5550 bfd_boolean dyn;
5551
5552 /* Make sure this symbol is output as a dynamic symbol.
5553 Undefined weak syms won't yet be marked as dynamic,
5554 nor will all TLS symbols. */
5555 if (h->dynindx == -1
5556 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5557 {
5558 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5559 return FALSE;
5560 }
5561
5562 if ((gent->tls_type & TLS_LD) != 0
5563 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5564 {
5565 gent->got.offset = htab->tlsld_got.offset;
5566 continue;
5567 }
5568
5569 s = htab->sgot;
5570 gent->got.offset = s->_raw_size;
5571 s->_raw_size
5572 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5573 dyn = htab->elf.dynamic_sections_created;
5574 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
5575 htab->srelgot->_raw_size
5576 += (gent->tls_type & eh->tls_mask & TLS_GD
5577 ? 2 * sizeof (Elf64_External_Rela)
5578 : sizeof (Elf64_External_Rela));
5579 }
5580 else
5581 gent->got.offset = (bfd_vma) -1;
5582
5583 if (eh->dyn_relocs == NULL)
5584 return TRUE;
5585
5586 /* In the shared -Bsymbolic case, discard space allocated for
5587 dynamic pc-relative relocs against symbols which turn out to be
5588 defined in regular objects. For the normal shared case, discard
5589 space for relocs that have become local due to symbol visibility
5590 changes. */
5591
5592 if (info->shared)
5593 {
5594 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
5595 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
5596 || info->symbolic))
5597 {
5598 struct ppc_dyn_relocs **pp;
5599
5600 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5601 {
5602 p->count -= p->pc_count;
5603 p->pc_count = 0;
5604 if (p->count == 0)
5605 *pp = p->next;
5606 else
5607 pp = &p->next;
5608 }
5609 }
5610 }
5611 else
5612 {
5613 /* For the non-shared case, discard space for relocs against
5614 symbols which turn out to need copy relocs or are not
5615 dynamic. */
5616
5617 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5618 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5619 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5620 {
5621 /* Make sure this symbol is output as a dynamic symbol.
5622 Undefined weak syms won't yet be marked as dynamic. */
5623 if (h->dynindx == -1
5624 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5625 {
5626 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5627 return FALSE;
5628 }
5629
5630 /* If that succeeded, we know we'll be keeping all the
5631 relocs. */
5632 if (h->dynindx != -1)
5633 goto keep;
5634 }
5635
5636 eh->dyn_relocs = NULL;
5637
5638 keep: ;
5639 }
5640
5641 /* Finally, allocate space. */
5642 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5643 {
5644 asection *sreloc = elf_section_data (p->sec)->sreloc;
5645 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
5646 }
5647
5648 return TRUE;
5649 }
5650
5651 /* Find any dynamic relocs that apply to read-only sections. */
5652
5653 static bfd_boolean
5654 readonly_dynrelocs (h, inf)
5655 struct elf_link_hash_entry *h;
5656 PTR inf;
5657 {
5658 struct ppc_link_hash_entry *eh;
5659 struct ppc_dyn_relocs *p;
5660
5661 if (h->root.type == bfd_link_hash_warning)
5662 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5663
5664 eh = (struct ppc_link_hash_entry *) h;
5665 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5666 {
5667 asection *s = p->sec->output_section;
5668
5669 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5670 {
5671 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5672
5673 info->flags |= DF_TEXTREL;
5674
5675 /* Not an error, just cut short the traversal. */
5676 return FALSE;
5677 }
5678 }
5679 return TRUE;
5680 }
5681
5682 /* Set the sizes of the dynamic sections. */
5683
5684 static bfd_boolean
5685 ppc64_elf_size_dynamic_sections (output_bfd, info)
5686 bfd *output_bfd ATTRIBUTE_UNUSED;
5687 struct bfd_link_info *info;
5688 {
5689 struct ppc_link_hash_table *htab;
5690 bfd *dynobj;
5691 asection *s;
5692 bfd_boolean relocs;
5693 bfd *ibfd;
5694
5695 htab = ppc_hash_table (info);
5696 dynobj = htab->elf.dynobj;
5697 if (dynobj == NULL)
5698 abort ();
5699
5700 if (htab->elf.dynamic_sections_created)
5701 {
5702 /* Set the contents of the .interp section to the interpreter. */
5703 if (! info->shared)
5704 {
5705 s = bfd_get_section_by_name (dynobj, ".interp");
5706 if (s == NULL)
5707 abort ();
5708 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
5709 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5710 }
5711 }
5712
5713 if (htab->tlsld_got.refcount > 0)
5714 {
5715 htab->tlsld_got.offset = htab->sgot->_raw_size;
5716 htab->sgot->_raw_size += 16;
5717 if (info->shared)
5718 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
5719 }
5720 else
5721 htab->tlsld_got.offset = (bfd_vma) -1;
5722
5723 /* Set up .got offsets for local syms, and space for local dynamic
5724 relocs. */
5725 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5726 {
5727 struct got_entry **lgot_ents;
5728 struct got_entry **end_lgot_ents;
5729 char *lgot_masks;
5730 bfd_size_type locsymcount;
5731 Elf_Internal_Shdr *symtab_hdr;
5732 asection *srel;
5733
5734 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5735 continue;
5736
5737 for (s = ibfd->sections; s != NULL; s = s->next)
5738 {
5739 struct ppc_dyn_relocs *p;
5740
5741 for (p = *((struct ppc_dyn_relocs **)
5742 &elf_section_data (s)->local_dynrel);
5743 p != NULL;
5744 p = p->next)
5745 {
5746 if (!bfd_is_abs_section (p->sec)
5747 && bfd_is_abs_section (p->sec->output_section))
5748 {
5749 /* Input section has been discarded, either because
5750 it is a copy of a linkonce section or due to
5751 linker script /DISCARD/, so we'll be discarding
5752 the relocs too. */
5753 }
5754 else if (p->count != 0)
5755 {
5756 srel = elf_section_data (p->sec)->sreloc;
5757 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
5758 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5759 info->flags |= DF_TEXTREL;
5760 }
5761 }
5762 }
5763
5764 lgot_ents = elf_local_got_ents (ibfd);
5765 if (!lgot_ents)
5766 continue;
5767
5768 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5769 locsymcount = symtab_hdr->sh_info;
5770 end_lgot_ents = lgot_ents + locsymcount;
5771 lgot_masks = (char *) end_lgot_ents;
5772 s = htab->sgot;
5773 srel = htab->srelgot;
5774 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5775 {
5776 struct got_entry *ent;
5777
5778 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5779 if (ent->got.refcount > 0)
5780 {
5781 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5782 {
5783 if (htab->tlsld_got.offset == (bfd_vma) -1)
5784 {
5785 htab->tlsld_got.offset = s->_raw_size;
5786 s->_raw_size += 16;
5787 if (info->shared)
5788 srel->_raw_size += sizeof (Elf64_External_Rela);
5789 }
5790 ent->got.offset = htab->tlsld_got.offset;
5791 }
5792 else
5793 {
5794 ent->got.offset = s->_raw_size;
5795 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5796 {
5797 s->_raw_size += 16;
5798 if (info->shared)
5799 srel->_raw_size += 2 * sizeof (Elf64_External_Rela);
5800 }
5801 else
5802 {
5803 s->_raw_size += 8;
5804 if (info->shared)
5805 srel->_raw_size += sizeof (Elf64_External_Rela);
5806 }
5807 }
5808 }
5809 else
5810 ent->got.offset = (bfd_vma) -1;
5811 }
5812 }
5813
5814 /* Allocate global sym .plt and .got entries, and space for global
5815 sym dynamic relocs. */
5816 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
5817
5818 /* We now have determined the sizes of the various dynamic sections.
5819 Allocate memory for them. */
5820 relocs = FALSE;
5821 for (s = dynobj->sections; s != NULL; s = s->next)
5822 {
5823 if ((s->flags & SEC_LINKER_CREATED) == 0)
5824 continue;
5825
5826 /* Reset _cooked_size since prelim layout will set it wrongly,
5827 and a non-zero _cooked_size sticks. */
5828 s->_cooked_size = 0;
5829
5830 if (s == htab->sbrlt || s == htab->srelbrlt)
5831 /* These haven't been allocated yet; don't strip. */
5832 continue;
5833 else if (s == htab->splt
5834 || s == htab->sgot
5835 || s == htab->sglink)
5836 {
5837 /* Strip this section if we don't need it; see the
5838 comment below. */
5839 }
5840 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5841 {
5842 if (s->_raw_size == 0)
5843 {
5844 /* If we don't need this section, strip it from the
5845 output file. This is mostly to handle .rela.bss and
5846 .rela.plt. We must create both sections in
5847 create_dynamic_sections, because they must be created
5848 before the linker maps input sections to output
5849 sections. The linker does that before
5850 adjust_dynamic_symbol is called, and it is that
5851 function which decides whether anything needs to go
5852 into these sections. */
5853 }
5854 else
5855 {
5856 if (s != htab->srelplt)
5857 relocs = TRUE;
5858
5859 /* We use the reloc_count field as a counter if we need
5860 to copy relocs into the output file. */
5861 s->reloc_count = 0;
5862 }
5863 }
5864 else
5865 {
5866 /* It's not one of our sections, so don't allocate space. */
5867 continue;
5868 }
5869
5870 if (s->_raw_size == 0)
5871 {
5872 _bfd_strip_section_from_output (info, s);
5873 continue;
5874 }
5875
5876 /* .plt is in the bss section. We don't initialise it. */
5877 if ((s->flags & SEC_LOAD) == 0)
5878 continue;
5879
5880 /* Allocate memory for the section contents. We use bfd_zalloc
5881 here in case unused entries are not reclaimed before the
5882 section's contents are written out. This should not happen,
5883 but this way if it does we get a R_PPC64_NONE reloc in .rela
5884 sections instead of garbage.
5885 We also rely on the section contents being zero when writing
5886 the GOT. */
5887 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
5888 if (s->contents == NULL)
5889 return FALSE;
5890 }
5891
5892 if (htab->elf.dynamic_sections_created)
5893 {
5894 /* Add some entries to the .dynamic section. We fill in the
5895 values later, in ppc64_elf_finish_dynamic_sections, but we
5896 must add the entries now so that we get the correct size for
5897 the .dynamic section. The DT_DEBUG entry is filled in by the
5898 dynamic linker and used by the debugger. */
5899 #define add_dynamic_entry(TAG, VAL) \
5900 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
5901
5902 if (!info->shared)
5903 {
5904 if (!add_dynamic_entry (DT_DEBUG, 0))
5905 return FALSE;
5906 }
5907
5908 if (htab->splt != NULL && htab->splt->_raw_size != 0)
5909 {
5910 if (!add_dynamic_entry (DT_PLTGOT, 0)
5911 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5912 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5913 || !add_dynamic_entry (DT_JMPREL, 0)
5914 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5915 return FALSE;
5916 }
5917
5918 if (NO_OPD_RELOCS)
5919 {
5920 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
5921 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
5922 return FALSE;
5923 }
5924
5925 if (relocs)
5926 {
5927 if (!add_dynamic_entry (DT_RELA, 0)
5928 || !add_dynamic_entry (DT_RELASZ, 0)
5929 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5930 return FALSE;
5931
5932 /* If any dynamic relocs apply to a read-only section,
5933 then we need a DT_TEXTREL entry. */
5934 if ((info->flags & DF_TEXTREL) == 0)
5935 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
5936 (PTR) info);
5937
5938 if ((info->flags & DF_TEXTREL) != 0)
5939 {
5940 if (!add_dynamic_entry (DT_TEXTREL, 0))
5941 return FALSE;
5942 }
5943 }
5944 }
5945 #undef add_dynamic_entry
5946
5947 return TRUE;
5948 }
5949
5950 /* Determine the type of stub needed, if any, for a call. */
5951
5952 static INLINE enum ppc_stub_type
5953 ppc_type_of_stub (input_sec, rel, hash, destination)
5954 asection *input_sec;
5955 const Elf_Internal_Rela *rel;
5956 struct ppc_link_hash_entry **hash;
5957 bfd_vma destination;
5958 {
5959 struct ppc_link_hash_entry *h = *hash;
5960 bfd_vma location;
5961 bfd_vma branch_offset;
5962 bfd_vma max_branch_offset;
5963 unsigned int r_type;
5964
5965 if (h != NULL)
5966 {
5967 if (h->oh != NULL
5968 && h->oh->dynindx != -1)
5969 {
5970 struct plt_entry *ent;
5971 for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
5972 if (ent->addend == rel->r_addend
5973 && ent->plt.offset != (bfd_vma) -1)
5974 {
5975 *hash = (struct ppc_link_hash_entry *) h->oh;
5976 return ppc_stub_plt_call;
5977 }
5978 }
5979
5980 if (h->elf.root.type == bfd_link_hash_undefweak
5981 || h->elf.root.type == bfd_link_hash_undefined)
5982 return ppc_stub_none;
5983 }
5984
5985 /* Determine where the call point is. */
5986 location = (input_sec->output_offset
5987 + input_sec->output_section->vma
5988 + rel->r_offset);
5989
5990 branch_offset = destination - location;
5991 r_type = ELF64_R_TYPE (rel->r_info);
5992
5993 /* Determine if a long branch stub is needed. */
5994 max_branch_offset = 1 << 25;
5995 if (r_type != (unsigned int) R_PPC64_REL24)
5996 max_branch_offset = 1 << 15;
5997
5998 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
5999 /* We need a stub. Figure out whether a long_branch or plt_branch
6000 is needed later. */
6001 return ppc_stub_long_branch;
6002
6003 return ppc_stub_none;
6004 }
6005
6006 /* Build a .plt call stub. */
6007
6008 static bfd_byte *
6009 build_plt_stub (obfd, p, offset, glink)
6010 bfd *obfd;
6011 bfd_byte *p;
6012 int offset;
6013 int glink;
6014 {
6015 #define PPC_LO(v) ((v) & 0xffff)
6016 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6017 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6018
6019 if (glink)
6020 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
6021 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6022 if (!glink)
6023 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6024 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6025 if (PPC_HA (offset + 8) != PPC_HA (offset))
6026 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
6027 offset += 8;
6028 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6029 if (PPC_HA (offset + 8) != PPC_HA (offset))
6030 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
6031 offset += 8;
6032 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6033 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6034 bfd_put_32 (obfd, BCTR, p), p += 4;
6035 return p;
6036 }
6037
6038 static bfd_boolean
6039 ppc_build_one_stub (gen_entry, in_arg)
6040 struct bfd_hash_entry *gen_entry;
6041 PTR in_arg;
6042 {
6043 struct ppc_stub_hash_entry *stub_entry;
6044 struct ppc_branch_hash_entry *br_entry;
6045 struct bfd_link_info *info;
6046 struct ppc_link_hash_table *htab;
6047 asection *stub_sec;
6048 bfd *stub_bfd;
6049 bfd_byte *loc;
6050 bfd_byte *p;
6051 unsigned int indx;
6052 struct plt_entry *ent;
6053 bfd_vma off;
6054 int size;
6055
6056 /* Massage our args to the form they really have. */
6057 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6058 info = (struct bfd_link_info *) in_arg;
6059
6060 htab = ppc_hash_table (info);
6061 stub_sec = stub_entry->stub_sec;
6062
6063 /* Make a note of the offset within the stubs for this entry. */
6064 stub_entry->stub_offset = stub_sec->_cooked_size;
6065 loc = stub_sec->contents + stub_entry->stub_offset;
6066
6067 stub_bfd = stub_sec->owner;
6068
6069 switch (stub_entry->stub_type)
6070 {
6071 case ppc_stub_long_branch:
6072 /* Branches are relative. This is where we are going to. */
6073 off = (stub_entry->target_value
6074 + stub_entry->target_section->output_offset
6075 + stub_entry->target_section->output_section->vma);
6076
6077 /* And this is where we are coming from. */
6078 off -= (stub_entry->stub_offset
6079 + stub_sec->output_offset
6080 + stub_sec->output_section->vma);
6081
6082 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6083
6084 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
6085 size = 4;
6086 break;
6087
6088 case ppc_stub_plt_branch:
6089 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6090 stub_entry->root.string + 9,
6091 FALSE, FALSE);
6092 if (br_entry == NULL)
6093 {
6094 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6095 stub_entry->root.string + 9);
6096 htab->stub_error = TRUE;
6097 return FALSE;
6098 }
6099
6100 off = (stub_entry->target_value
6101 + stub_entry->target_section->output_offset
6102 + stub_entry->target_section->output_section->vma);
6103
6104 bfd_put_64 (htab->sbrlt->owner, off,
6105 htab->sbrlt->contents + br_entry->offset);
6106
6107 if (info->shared)
6108 {
6109 /* Create a reloc for the branch lookup table entry. */
6110 Elf_Internal_Rela rela;
6111 bfd_byte *loc;
6112
6113 rela.r_offset = (br_entry->offset
6114 + htab->sbrlt->output_offset
6115 + htab->sbrlt->output_section->vma);
6116 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6117 rela.r_addend = off;
6118
6119 loc = htab->srelbrlt->contents;
6120 loc += htab->srelbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6121 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, loc);
6122 }
6123
6124 off = (br_entry->offset
6125 + htab->sbrlt->output_offset
6126 + htab->sbrlt->output_section->vma
6127 - elf_gp (htab->sbrlt->output_section->owner)
6128 - TOC_BASE_OFF);
6129
6130 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
6131 {
6132 (*_bfd_error_handler)
6133 (_("linkage table error against `%s'"),
6134 stub_entry->root.string);
6135 bfd_set_error (bfd_error_bad_value);
6136 htab->stub_error = TRUE;
6137 return FALSE;
6138 }
6139
6140 indx = off;
6141 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
6142 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
6143 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
6144 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
6145 size = 16;
6146 break;
6147
6148 case ppc_stub_plt_call:
6149 /* Do the best we can for shared libraries built without
6150 exporting ".foo" for each "foo". This can happen when symbol
6151 versioning scripts strip all bar a subset of symbols. */
6152 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
6153 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
6154 {
6155 /* Point the symbol at the stub. There may be multiple stubs,
6156 we don't really care; The main thing is to make this sym
6157 defined somewhere. */
6158 stub_entry->h->oh->root.type = bfd_link_hash_defined;
6159 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
6160 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
6161 }
6162
6163 /* Now build the stub. */
6164 off = (bfd_vma) -1;
6165 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6166 if (ent->addend == stub_entry->addend)
6167 {
6168 off = ent->plt.offset;
6169 break;
6170 }
6171 if (off >= (bfd_vma) -2)
6172 abort ();
6173
6174 off &= ~ (bfd_vma) 1;
6175 off += (htab->splt->output_offset
6176 + htab->splt->output_section->vma
6177 - elf_gp (htab->splt->output_section->owner)
6178 - TOC_BASE_OFF);
6179
6180 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
6181 {
6182 (*_bfd_error_handler)
6183 (_("linkage table error against `%s'"),
6184 stub_entry->h->elf.root.root.string);
6185 bfd_set_error (bfd_error_bad_value);
6186 htab->stub_error = TRUE;
6187 return FALSE;
6188 }
6189
6190 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
6191 size = p - loc;
6192 break;
6193
6194 default:
6195 BFD_FAIL ();
6196 return FALSE;
6197 }
6198
6199 stub_sec->_cooked_size += size;
6200 return TRUE;
6201 }
6202
6203 /* As above, but don't actually build the stub. Just bump offset so
6204 we know stub section sizes, and select plt_branch stubs where
6205 long_branch stubs won't do. */
6206
6207 static bfd_boolean
6208 ppc_size_one_stub (gen_entry, in_arg)
6209 struct bfd_hash_entry *gen_entry;
6210 PTR in_arg;
6211 {
6212 struct ppc_stub_hash_entry *stub_entry;
6213 struct ppc_link_hash_table *htab;
6214 bfd_vma off;
6215 int size;
6216
6217 /* Massage our args to the form they really have. */
6218 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6219 htab = (struct ppc_link_hash_table *) in_arg;
6220
6221 if (stub_entry->stub_type == ppc_stub_plt_call)
6222 {
6223 struct plt_entry *ent;
6224 off = (bfd_vma) -1;
6225 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6226 if (ent->addend == stub_entry->addend)
6227 {
6228 off = ent->plt.offset & ~(bfd_vma) 1;
6229 break;
6230 }
6231 if (off >= (bfd_vma) -2)
6232 abort ();
6233 off += (htab->splt->output_offset
6234 + htab->splt->output_section->vma
6235 - elf_gp (htab->splt->output_section->owner)
6236 - TOC_BASE_OFF);
6237
6238 size = 28;
6239 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
6240 size += 4;
6241 }
6242 else
6243 {
6244 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
6245 stub_entry->stub_type = ppc_stub_long_branch;
6246 size = 4;
6247
6248 off = (stub_entry->target_value
6249 + stub_entry->target_section->output_offset
6250 + stub_entry->target_section->output_section->vma);
6251 off -= (stub_entry->stub_sec->_raw_size
6252 + stub_entry->stub_sec->output_offset
6253 + stub_entry->stub_sec->output_section->vma);
6254
6255 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6256 {
6257 struct ppc_branch_hash_entry *br_entry;
6258
6259 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6260 stub_entry->root.string + 9,
6261 TRUE, FALSE);
6262 if (br_entry == NULL)
6263 {
6264 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6265 stub_entry->root.string + 9);
6266 htab->stub_error = TRUE;
6267 return FALSE;
6268 }
6269
6270 if (br_entry->iter != htab->stub_iteration)
6271 {
6272 br_entry->iter = htab->stub_iteration;
6273 br_entry->offset = htab->sbrlt->_raw_size;
6274 htab->sbrlt->_raw_size += 8;
6275 }
6276 stub_entry->stub_type = ppc_stub_plt_branch;
6277 size = 16;
6278 }
6279 }
6280
6281 stub_entry->stub_sec->_raw_size += size;
6282 return TRUE;
6283 }
6284
6285 /* Set up various things so that we can make a list of input sections
6286 for each output section included in the link. Returns -1 on error,
6287 0 when no stubs will be needed, and 1 on success. */
6288
6289 int
6290 ppc64_elf_setup_section_lists (output_bfd, info)
6291 bfd *output_bfd;
6292 struct bfd_link_info *info;
6293 {
6294 bfd *input_bfd;
6295 int top_id, top_index;
6296 asection *section;
6297 asection **input_list, **list;
6298 bfd_size_type amt;
6299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6300
6301 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
6302 || htab->sbrlt == NULL)
6303 return 0;
6304
6305 /* Find the top input section id. */
6306 for (input_bfd = info->input_bfds, top_id = 0;
6307 input_bfd != NULL;
6308 input_bfd = input_bfd->link_next)
6309 {
6310 for (section = input_bfd->sections;
6311 section != NULL;
6312 section = section->next)
6313 {
6314 if (top_id < section->id)
6315 top_id = section->id;
6316 }
6317 }
6318
6319 amt = sizeof (struct map_stub) * (top_id + 1);
6320 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
6321 if (htab->stub_group == NULL)
6322 return -1;
6323
6324 /* We can't use output_bfd->section_count here to find the top output
6325 section index as some sections may have been removed, and
6326 _bfd_strip_section_from_output doesn't renumber the indices. */
6327 for (section = output_bfd->sections, top_index = 0;
6328 section != NULL;
6329 section = section->next)
6330 {
6331 if (top_index < section->index)
6332 top_index = section->index;
6333 }
6334
6335 htab->top_index = top_index;
6336 amt = sizeof (asection *) * (top_index + 1);
6337 input_list = (asection **) bfd_malloc (amt);
6338 htab->input_list = input_list;
6339 if (input_list == NULL)
6340 return -1;
6341
6342 /* For sections we aren't interested in, mark their entries with a
6343 value we can check later. */
6344 list = input_list + top_index;
6345 do
6346 *list = bfd_abs_section_ptr;
6347 while (list-- != input_list);
6348
6349 for (section = output_bfd->sections;
6350 section != NULL;
6351 section = section->next)
6352 {
6353 if ((section->flags & SEC_CODE) != 0)
6354 input_list[section->index] = NULL;
6355 }
6356
6357 return 1;
6358 }
6359
6360 /* The linker repeatedly calls this function for each input section,
6361 in the order that input sections are linked into output sections.
6362 Build lists of input sections to determine groupings between which
6363 we may insert linker stubs. */
6364
6365 void
6366 ppc64_elf_next_input_section (info, isec)
6367 struct bfd_link_info *info;
6368 asection *isec;
6369 {
6370 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6371
6372 if (isec->output_section->index <= htab->top_index)
6373 {
6374 asection **list = htab->input_list + isec->output_section->index;
6375 if (*list != bfd_abs_section_ptr)
6376 {
6377 /* Steal the link_sec pointer for our list. */
6378 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6379 /* This happens to make the list in reverse order,
6380 which is what we want. */
6381 PREV_SEC (isec) = *list;
6382 *list = isec;
6383 }
6384 }
6385 }
6386
6387 /* See whether we can group stub sections together. Grouping stub
6388 sections may result in fewer stubs. More importantly, we need to
6389 put all .init* and .fini* stubs at the beginning of the .init or
6390 .fini output sections respectively, because glibc splits the
6391 _init and _fini functions into multiple parts. Putting a stub in
6392 the middle of a function is not a good idea. */
6393
6394 static void
6395 group_sections (htab, stub_group_size, stubs_always_before_branch)
6396 struct ppc_link_hash_table *htab;
6397 bfd_size_type stub_group_size;
6398 bfd_boolean stubs_always_before_branch;
6399 {
6400 asection **list = htab->input_list + htab->top_index;
6401 do
6402 {
6403 asection *tail = *list;
6404 if (tail == bfd_abs_section_ptr)
6405 continue;
6406 while (tail != NULL)
6407 {
6408 asection *curr;
6409 asection *prev;
6410 bfd_size_type total;
6411 bfd_boolean big_sec;
6412
6413 curr = tail;
6414 if (tail->_cooked_size)
6415 total = tail->_cooked_size;
6416 else
6417 total = tail->_raw_size;
6418 big_sec = total >= stub_group_size;
6419
6420 while ((prev = PREV_SEC (curr)) != NULL
6421 && ((total += curr->output_offset - prev->output_offset)
6422 < stub_group_size))
6423 curr = prev;
6424
6425 /* OK, the size from the start of CURR to the end is less
6426 than stub_group_size and thus can be handled by one stub
6427 section. (or the tail section is itself larger than
6428 stub_group_size, in which case we may be toast.) We
6429 should really be keeping track of the total size of stubs
6430 added here, as stubs contribute to the final output
6431 section size. That's a little tricky, and this way will
6432 only break if stubs added make the total size more than
6433 2^25, ie. for the default stub_group_size, if stubs total
6434 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6435 do
6436 {
6437 prev = PREV_SEC (tail);
6438 /* Set up this stub group. */
6439 htab->stub_group[tail->id].link_sec = curr;
6440 }
6441 while (tail != curr && (tail = prev) != NULL);
6442
6443 /* But wait, there's more! Input sections up to stub_group_size
6444 bytes before the stub section can be handled by it too.
6445 Don't do this if we have a really large section after the
6446 stubs, as adding more stubs increases the chance that
6447 branches may not reach into the stub section. */
6448 if (!stubs_always_before_branch && !big_sec)
6449 {
6450 total = 0;
6451 while (prev != NULL
6452 && ((total += tail->output_offset - prev->output_offset)
6453 < stub_group_size))
6454 {
6455 tail = prev;
6456 prev = PREV_SEC (tail);
6457 htab->stub_group[tail->id].link_sec = curr;
6458 }
6459 }
6460 tail = prev;
6461 }
6462 }
6463 while (list-- != htab->input_list);
6464 free (htab->input_list);
6465 #undef PREV_SEC
6466 }
6467
6468 /* Determine and set the size of the stub section for a final link.
6469
6470 The basic idea here is to examine all the relocations looking for
6471 PC-relative calls to a target that is unreachable with a "bl"
6472 instruction. */
6473
6474 bfd_boolean
6475 ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
6476 add_stub_section, layout_sections_again)
6477 bfd *output_bfd;
6478 bfd *stub_bfd;
6479 struct bfd_link_info *info;
6480 bfd_signed_vma group_size;
6481 asection * (*add_stub_section) PARAMS ((const char *, asection *));
6482 void (*layout_sections_again) PARAMS ((void));
6483 {
6484 bfd_size_type stub_group_size;
6485 bfd_boolean stubs_always_before_branch;
6486 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6487
6488 /* Stash our params away. */
6489 htab->stub_bfd = stub_bfd;
6490 htab->add_stub_section = add_stub_section;
6491 htab->layout_sections_again = layout_sections_again;
6492 stubs_always_before_branch = group_size < 0;
6493 if (group_size < 0)
6494 stub_group_size = -group_size;
6495 else
6496 stub_group_size = group_size;
6497 if (stub_group_size == 1)
6498 {
6499 /* Default values. */
6500 if (stubs_always_before_branch)
6501 {
6502 stub_group_size = 0x1e00000;
6503 if (htab->has_14bit_branch)
6504 stub_group_size = 0x7800;
6505 }
6506 else
6507 {
6508 stub_group_size = 0x1c00000;
6509 if (htab->has_14bit_branch)
6510 stub_group_size = 0x7000;
6511 }
6512 }
6513
6514 group_sections (htab, stub_group_size, stubs_always_before_branch);
6515
6516 while (1)
6517 {
6518 bfd *input_bfd;
6519 unsigned int bfd_indx;
6520 asection *stub_sec;
6521 bfd_boolean stub_changed;
6522
6523 htab->stub_iteration += 1;
6524 stub_changed = FALSE;
6525
6526 for (input_bfd = info->input_bfds, bfd_indx = 0;
6527 input_bfd != NULL;
6528 input_bfd = input_bfd->link_next, bfd_indx++)
6529 {
6530 Elf_Internal_Shdr *symtab_hdr;
6531 asection *section;
6532 Elf_Internal_Sym *local_syms = NULL;
6533
6534 /* We'll need the symbol table in a second. */
6535 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6536 if (symtab_hdr->sh_info == 0)
6537 continue;
6538
6539 /* Walk over each section attached to the input bfd. */
6540 for (section = input_bfd->sections;
6541 section != NULL;
6542 section = section->next)
6543 {
6544 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6545
6546 /* If there aren't any relocs, then there's nothing more
6547 to do. */
6548 if ((section->flags & SEC_RELOC) == 0
6549 || section->reloc_count == 0)
6550 continue;
6551
6552 /* If this section is a link-once section that will be
6553 discarded, then don't create any stubs. */
6554 if (section->output_section == NULL
6555 || section->output_section->owner != output_bfd)
6556 continue;
6557
6558 /* Get the relocs. */
6559 internal_relocs
6560 = _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
6561 (Elf_Internal_Rela *) NULL,
6562 info->keep_memory);
6563 if (internal_relocs == NULL)
6564 goto error_ret_free_local;
6565
6566 /* Now examine each relocation. */
6567 irela = internal_relocs;
6568 irelaend = irela + section->reloc_count;
6569 for (; irela < irelaend; irela++)
6570 {
6571 unsigned int r_type, r_indx;
6572 enum ppc_stub_type stub_type;
6573 struct ppc_stub_hash_entry *stub_entry;
6574 asection *sym_sec;
6575 bfd_vma sym_value;
6576 bfd_vma destination;
6577 struct ppc_link_hash_entry *hash;
6578 struct elf_link_hash_entry *h;
6579 Elf_Internal_Sym *sym;
6580 char *stub_name;
6581 const asection *id_sec;
6582
6583 r_type = ELF64_R_TYPE (irela->r_info);
6584 r_indx = ELF64_R_SYM (irela->r_info);
6585
6586 if (r_type >= (unsigned int) R_PPC64_max)
6587 {
6588 bfd_set_error (bfd_error_bad_value);
6589 goto error_ret_free_internal;
6590 }
6591
6592 /* Only look for stubs on branch instructions. */
6593 if (r_type != (unsigned int) R_PPC64_REL24
6594 && r_type != (unsigned int) R_PPC64_REL14
6595 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
6596 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
6597 continue;
6598
6599 /* Now determine the call target, its name, value,
6600 section. */
6601 destination = 0;
6602 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6603 r_indx, input_bfd))
6604 goto error_ret_free_internal;
6605 hash = (struct ppc_link_hash_entry *) h;
6606
6607 if (hash == NULL)
6608 {
6609 /* It's a local symbol. */
6610 sym_value = sym->st_value;
6611 destination = (sym_value + irela->r_addend
6612 + sym_sec->output_offset
6613 + sym_sec->output_section->vma);
6614 }
6615 else
6616 {
6617 /* It's an external symbol. */
6618 sym_value = 0;
6619 if (hash->elf.root.type == bfd_link_hash_defined
6620 || hash->elf.root.type == bfd_link_hash_defweak)
6621 {
6622 sym_value = hash->elf.root.u.def.value;
6623 if (sym_sec->output_section != NULL)
6624 destination = (sym_value + irela->r_addend
6625 + sym_sec->output_offset
6626 + sym_sec->output_section->vma);
6627 }
6628 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6629 ;
6630 else if (hash->elf.root.type == bfd_link_hash_undefined)
6631 ;
6632 else
6633 {
6634 bfd_set_error (bfd_error_bad_value);
6635 goto error_ret_free_internal;
6636 }
6637 }
6638
6639 /* Determine what (if any) linker stub is needed. */
6640 stub_type = ppc_type_of_stub (section, irela, &hash,
6641 destination);
6642 if (stub_type == ppc_stub_none)
6643 continue;
6644
6645 /* __tls_get_addr calls might be eliminated. */
6646 if (stub_type != ppc_stub_plt_call
6647 && hash != NULL
6648 && &hash->elf == htab->tls_get_addr
6649 && section->has_tls_reloc
6650 && irela != internal_relocs)
6651 {
6652 /* Get tls info. */
6653 char *tls_mask;
6654
6655 if (!get_tls_mask (&tls_mask, &local_syms,
6656 irela - 1, input_bfd))
6657 goto error_ret_free_internal;
6658 if (*tls_mask != 0)
6659 continue;
6660 }
6661
6662 /* Support for grouping stub sections. */
6663 id_sec = htab->stub_group[section->id].link_sec;
6664
6665 /* Get the name of this stub. */
6666 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
6667 if (!stub_name)
6668 goto error_ret_free_internal;
6669
6670 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
6671 stub_name, FALSE, FALSE);
6672 if (stub_entry != NULL)
6673 {
6674 /* The proper stub has already been created. */
6675 free (stub_name);
6676 continue;
6677 }
6678
6679 stub_entry = ppc_add_stub (stub_name, section, htab);
6680 if (stub_entry == NULL)
6681 {
6682 free (stub_name);
6683 error_ret_free_internal:
6684 if (elf_section_data (section)->relocs == NULL)
6685 free (internal_relocs);
6686 error_ret_free_local:
6687 if (local_syms != NULL
6688 && (symtab_hdr->contents
6689 != (unsigned char *) local_syms))
6690 free (local_syms);
6691 return FALSE;
6692 }
6693
6694 stub_entry->target_value = sym_value;
6695 stub_entry->target_section = sym_sec;
6696 stub_entry->stub_type = stub_type;
6697 stub_entry->h = hash;
6698 stub_entry->addend = irela->r_addend;
6699 stub_changed = TRUE;
6700 }
6701
6702 /* We're done with the internal relocs, free them. */
6703 if (elf_section_data (section)->relocs != internal_relocs)
6704 free (internal_relocs);
6705 }
6706
6707 if (local_syms != NULL
6708 && symtab_hdr->contents != (unsigned char *) local_syms)
6709 {
6710 if (!info->keep_memory)
6711 free (local_syms);
6712 else
6713 symtab_hdr->contents = (unsigned char *) local_syms;
6714 }
6715 }
6716
6717 if (!stub_changed)
6718 break;
6719
6720 /* OK, we've added some stubs. Find out the new size of the
6721 stub sections. */
6722 for (stub_sec = htab->stub_bfd->sections;
6723 stub_sec != NULL;
6724 stub_sec = stub_sec->next)
6725 {
6726 stub_sec->_raw_size = 0;
6727 stub_sec->_cooked_size = 0;
6728 }
6729 htab->sbrlt->_raw_size = 0;
6730 htab->sbrlt->_cooked_size = 0;
6731
6732 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
6733
6734 /* Ask the linker to do its stuff. */
6735 (*htab->layout_sections_again) ();
6736 }
6737
6738 /* It would be nice to strip .branch_lt from the output if the
6739 section is empty, but it's too late. If we strip sections here,
6740 the dynamic symbol table is corrupted since the section symbol
6741 for the stripped section isn't written. */
6742
6743 return TRUE;
6744 }
6745
6746 /* Called after we have determined section placement. If sections
6747 move, we'll be called again. Provide a value for TOCstart. */
6748
6749 bfd_vma
6750 ppc64_elf_toc (obfd)
6751 bfd *obfd;
6752 {
6753 asection *s;
6754 bfd_vma TOCstart;
6755
6756 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
6757 order. The TOC starts where the first of these sections starts. */
6758 s = bfd_get_section_by_name (obfd, ".got");
6759 if (s == NULL)
6760 s = bfd_get_section_by_name (obfd, ".toc");
6761 if (s == NULL)
6762 s = bfd_get_section_by_name (obfd, ".tocbss");
6763 if (s == NULL)
6764 s = bfd_get_section_by_name (obfd, ".plt");
6765 if (s == NULL)
6766 {
6767 /* This may happen for
6768 o references to TOC base (SYM@toc / TOC[tc0]) without a
6769 .toc directive
6770 o bad linker script
6771 o --gc-sections and empty TOC sections
6772
6773 FIXME: Warn user? */
6774
6775 /* Look for a likely section. We probably won't even be
6776 using TOCstart. */
6777 for (s = obfd->sections; s != NULL; s = s->next)
6778 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
6779 == (SEC_ALLOC | SEC_SMALL_DATA))
6780 break;
6781 if (s == NULL)
6782 for (s = obfd->sections; s != NULL; s = s->next)
6783 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
6784 == (SEC_ALLOC | SEC_SMALL_DATA))
6785 break;
6786 if (s == NULL)
6787 for (s = obfd->sections; s != NULL; s = s->next)
6788 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
6789 break;
6790 if (s == NULL)
6791 for (s = obfd->sections; s != NULL; s = s->next)
6792 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
6793 break;
6794 }
6795
6796 TOCstart = 0;
6797 if (s != NULL)
6798 TOCstart = s->output_section->vma + s->output_offset;
6799
6800 return TOCstart;
6801 }
6802
6803 /* Build all the stubs associated with the current output file.
6804 The stubs are kept in a hash table attached to the main linker
6805 hash table. This function is called via gldelf64ppc_finish. */
6806
6807 bfd_boolean
6808 ppc64_elf_build_stubs (info)
6809 struct bfd_link_info *info;
6810 {
6811 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6812 asection *stub_sec;
6813 bfd_vma plt_r2;
6814 bfd_byte *p;
6815
6816 for (stub_sec = htab->stub_bfd->sections;
6817 stub_sec != NULL;
6818 stub_sec = stub_sec->next)
6819 {
6820 bfd_size_type size;
6821
6822 /* Allocate memory to hold the linker stubs. */
6823 size = stub_sec->_raw_size;
6824 if (size != 0)
6825 {
6826 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
6827 if (stub_sec->contents == NULL)
6828 return FALSE;
6829 }
6830 stub_sec->_cooked_size = 0;
6831 }
6832
6833 if (htab->splt != NULL)
6834 {
6835 unsigned int indx;
6836
6837 /* Build the .glink plt call stub. */
6838 plt_r2 = (htab->splt->output_offset
6839 + htab->splt->output_section->vma
6840 - elf_gp (htab->splt->output_section->owner)
6841 - TOC_BASE_OFF);
6842 p = htab->sglink->contents;
6843 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
6844 while (p < htab->sglink->contents + GLINK_CALL_STUB_SIZE)
6845 {
6846 bfd_put_32 (htab->sglink->owner, NOP, p);
6847 p += 4;
6848 }
6849
6850 /* Build the .glink lazy link call stubs. */
6851 indx = 0;
6852 while (p < htab->sglink->contents + htab->sglink->_raw_size)
6853 {
6854 if (indx < 0x8000)
6855 {
6856 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
6857 p += 4;
6858 }
6859 else
6860 {
6861 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
6862 p += 4;
6863 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
6864 p += 4;
6865 }
6866 bfd_put_32 (htab->sglink->owner,
6867 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
6868 indx++;
6869 p += 4;
6870 }
6871 htab->sglink->_cooked_size = p - htab->sglink->contents;
6872 }
6873
6874 if (htab->sbrlt->_raw_size != 0)
6875 {
6876 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
6877 htab->sbrlt->_raw_size);
6878 if (htab->sbrlt->contents == NULL)
6879 return FALSE;
6880 }
6881
6882 /* Build the stubs as directed by the stub hash table. */
6883 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
6884
6885 for (stub_sec = htab->stub_bfd->sections;
6886 stub_sec != NULL;
6887 stub_sec = stub_sec->next)
6888 {
6889 if (stub_sec->_raw_size != stub_sec->_cooked_size)
6890 break;
6891 }
6892
6893 if (stub_sec != NULL
6894 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
6895 {
6896 htab->stub_error = TRUE;
6897 (*_bfd_error_handler) (_("stubs don't match calculated size"));
6898 }
6899
6900 return !htab->stub_error;
6901 }
6902
6903 /* The RELOCATE_SECTION function is called by the ELF backend linker
6904 to handle the relocations for a section.
6905
6906 The relocs are always passed as Rela structures; if the section
6907 actually uses Rel structures, the r_addend field will always be
6908 zero.
6909
6910 This function is responsible for adjust the section contents as
6911 necessary, and (if using Rela relocs and generating a
6912 relocateable output file) adjusting the reloc addend as
6913 necessary.
6914
6915 This function does not have to worry about setting the reloc
6916 address or the reloc symbol index.
6917
6918 LOCAL_SYMS is a pointer to the swapped in local symbols.
6919
6920 LOCAL_SECTIONS is an array giving the section in the input file
6921 corresponding to the st_shndx field of each local symbol.
6922
6923 The global hash table entry for the global symbols can be found
6924 via elf_sym_hashes (input_bfd).
6925
6926 When generating relocateable output, this function must handle
6927 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6928 going to be the section symbol corresponding to the output
6929 section, which means that the addend must be adjusted
6930 accordingly. */
6931
6932 static bfd_boolean
6933 ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
6934 contents, relocs, local_syms, local_sections)
6935 bfd *output_bfd;
6936 struct bfd_link_info *info;
6937 bfd *input_bfd;
6938 asection *input_section;
6939 bfd_byte *contents;
6940 Elf_Internal_Rela *relocs;
6941 Elf_Internal_Sym *local_syms;
6942 asection **local_sections;
6943 {
6944 struct ppc_link_hash_table *htab;
6945 Elf_Internal_Shdr *symtab_hdr;
6946 struct elf_link_hash_entry **sym_hashes;
6947 Elf_Internal_Rela *rel;
6948 Elf_Internal_Rela *relend;
6949 Elf_Internal_Rela outrel;
6950 bfd_byte *loc;
6951 struct got_entry **local_got_ents;
6952 bfd_vma TOCstart;
6953 bfd_boolean ret = TRUE;
6954 bfd_boolean is_opd;
6955 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
6956 bfd_boolean is_power4 = FALSE;
6957
6958 if (info->relocateable)
6959 return TRUE;
6960
6961 /* Initialize howto table if needed. */
6962 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
6963 ppc_howto_init ();
6964
6965 htab = ppc_hash_table (info);
6966 local_got_ents = elf_local_got_ents (input_bfd);
6967 TOCstart = elf_gp (output_bfd);
6968 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6969 sym_hashes = elf_sym_hashes (input_bfd);
6970 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
6971
6972 rel = relocs;
6973 relend = relocs + input_section->reloc_count;
6974 for (; rel < relend; rel++)
6975 {
6976 enum elf_ppc64_reloc_type r_type;
6977 bfd_vma addend;
6978 bfd_reloc_status_type r;
6979 Elf_Internal_Sym *sym;
6980 asection *sec;
6981 struct elf_link_hash_entry *h;
6982 struct elf_link_hash_entry *fdh;
6983 const char *sym_name;
6984 unsigned long r_symndx;
6985 char tls_mask, tls_gd, tls_type;
6986 bfd_vma relocation;
6987 bfd_boolean unresolved_reloc;
6988 bfd_boolean warned;
6989 long insn;
6990 struct ppc_stub_hash_entry *stub_entry;
6991 bfd_vma max_br_offset;
6992 bfd_vma from;
6993
6994 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
6995 r_symndx = ELF64_R_SYM (rel->r_info);
6996 sym = (Elf_Internal_Sym *) 0;
6997 sec = (asection *) 0;
6998 h = (struct elf_link_hash_entry *) 0;
6999 sym_name = (const char *) 0;
7000 unresolved_reloc = FALSE;
7001 warned = FALSE;
7002
7003 if (r_type == R_PPC64_TOC)
7004 {
7005 /* Relocation value is TOC base. Symbol is ignored. */
7006 relocation = TOCstart + TOC_BASE_OFF;
7007 }
7008 else if (r_symndx < symtab_hdr->sh_info)
7009 {
7010 /* It's a local symbol. */
7011 sym = local_syms + r_symndx;
7012 sec = local_sections[r_symndx];
7013 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7014 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
7015 if (elf_section_data (sec) != NULL)
7016 {
7017 long *opd_sym_adjust;
7018
7019 opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
7020 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
7021 relocation += opd_sym_adjust[sym->st_value / 24];
7022 }
7023 }
7024 else
7025 {
7026 /* It's a global symbol. */
7027 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7028 while (h->root.type == bfd_link_hash_indirect
7029 || h->root.type == bfd_link_hash_warning)
7030 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7031 sym_name = h->root.root.string;
7032 relocation = 0;
7033 if (h->root.type == bfd_link_hash_defined
7034 || h->root.type == bfd_link_hash_defweak)
7035 {
7036 sec = h->root.u.def.section;
7037 if (sec->output_section == NULL)
7038 /* Set a flag that will be cleared later if we find a
7039 relocation value for this symbol. output_section
7040 is typically NULL for symbols satisfied by a shared
7041 library. */
7042 unresolved_reloc = TRUE;
7043 else
7044 relocation = (h->root.u.def.value
7045 + sec->output_section->vma
7046 + sec->output_offset);
7047 }
7048 else if (h->root.type == bfd_link_hash_undefweak)
7049 ;
7050 else if (info->shared
7051 && !info->no_undefined
7052 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
7053 ;
7054 else
7055 {
7056 if (! ((*info->callbacks->undefined_symbol)
7057 (info, h->root.root.string, input_bfd, input_section,
7058 rel->r_offset, (!info->shared
7059 || info->no_undefined
7060 || ELF_ST_VISIBILITY (h->other)))))
7061 return FALSE;
7062 warned = TRUE;
7063 }
7064 }
7065
7066 /* TLS optimizations. Replace instruction sequences and relocs
7067 based on information we collected in tls_optimize. We edit
7068 RELOCS so that --emit-relocs will output something sensible
7069 for the final instruction stream. */
7070 tls_mask = 0;
7071 tls_gd = 0;
7072 if (IS_PPC64_TLS_RELOC (r_type))
7073 {
7074 if (h != NULL)
7075 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7076 else if (local_got_ents != NULL)
7077 {
7078 char *lgot_masks;
7079 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7080 tls_mask = lgot_masks[r_symndx];
7081 }
7082 }
7083
7084 /* Ensure reloc mapping code below stays sane. */
7085 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7086 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7087 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7088 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7089 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7090 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7091 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7092 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7093 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7094 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7095 abort ();
7096 switch (r_type)
7097 {
7098 default:
7099 break;
7100
7101 case R_PPC64_TOC16:
7102 case R_PPC64_TOC16_LO:
7103 case R_PPC64_TOC16_DS:
7104 case R_PPC64_TOC16_LO_DS:
7105 {
7106 /* Check for toc tls entries. */
7107 char *toc_tls;
7108 int retval;
7109
7110 retval = get_tls_mask (&toc_tls, &local_syms, rel, input_bfd);
7111 if (retval == 0)
7112 return FALSE;
7113
7114 if (toc_tls)
7115 {
7116 tls_mask = *toc_tls;
7117 if (r_type == R_PPC64_TOC16_DS
7118 || r_type == R_PPC64_TOC16_LO_DS)
7119 goto toctprel;
7120 else
7121 {
7122 /* If we found a GD reloc pair, then we might be
7123 doing a GD->IE transition. */
7124 if (retval == 2)
7125 {
7126 tls_gd = TLS_TPRELGD;
7127 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7128 goto tls_get_addr_check;
7129 }
7130 else if (retval == 3)
7131 {
7132 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7133 goto tls_get_addr_check;
7134 }
7135 }
7136 }
7137 }
7138 break;
7139
7140 case R_PPC64_GOT_TPREL16_DS:
7141 case R_PPC64_GOT_TPREL16_LO_DS:
7142 toctprel:
7143 if (tls_mask != 0
7144 && (tls_mask & TLS_TPREL) == 0)
7145 {
7146 bfd_vma insn;
7147 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7148 insn &= 31 << 21;
7149 insn |= 0x3c0d0000; /* addis 0,13,0 */
7150 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7151 r_type = R_PPC64_TPREL16_HA;
7152 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7153 }
7154 break;
7155
7156 case R_PPC64_TLS:
7157 if (tls_mask == 0)
7158 {
7159 /* Check for toc tls entries. */
7160 char *toc_tls;
7161
7162 if (!get_tls_mask (&toc_tls, &local_syms, rel, input_bfd))
7163 return FALSE;
7164
7165 if (toc_tls)
7166 tls_mask = *toc_tls;
7167 }
7168 if (tls_mask != 0
7169 && (tls_mask & TLS_TPREL) == 0)
7170 {
7171 bfd_vma insn, rtra;
7172 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7173 if ((insn & ((31 << 26) | (31 << 11)))
7174 == ((31 << 26) | (13 << 11)))
7175 rtra = insn & ((1 << 26) - (1 << 16));
7176 else if ((insn & ((31 << 26) | (31 << 16)))
7177 == ((31 << 26) | (13 << 16)))
7178 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7179 else
7180 abort ();
7181 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7182 /* add -> addi. */
7183 insn = 14 << 26;
7184 else if ((insn & (31 << 1)) == 23 << 1
7185 && ((insn & (31 << 6)) < 14 << 6
7186 || ((insn & (31 << 6)) >= 16 << 6
7187 && (insn & (31 << 6)) < 24 << 6)))
7188 /* load and store indexed -> dform. */
7189 insn = (32 | ((insn >> 6) & 31)) << 26;
7190 else if ((insn & (31 << 1)) == 21 << 1
7191 && (insn & (0x1a << 6)) == 0)
7192 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7193 insn = (((58 | ((insn >> 6) & 4)) << 26)
7194 | ((insn >> 6) & 1));
7195 else if ((insn & (31 << 1)) == 21 << 1
7196 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7197 /* lwax -> lwa. */
7198 insn = (58 << 26) | 2;
7199 else
7200 abort ();
7201 insn |= rtra;
7202 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7203 r_type = R_PPC64_TPREL16_LO;
7204 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7205 /* Was PPC64_TLS which sits on insn boundary, now
7206 PPC64_TPREL16_LO which is at insn+2. */
7207 rel->r_offset += 2;
7208 }
7209 break;
7210
7211 case R_PPC64_GOT_TLSGD16_HI:
7212 case R_PPC64_GOT_TLSGD16_HA:
7213 tls_gd = TLS_TPRELGD;
7214 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7215 goto tls_gdld_hi;
7216 break;
7217
7218 case R_PPC64_GOT_TLSLD16_HI:
7219 case R_PPC64_GOT_TLSLD16_HA:
7220 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7221 {
7222 tls_gdld_hi:
7223 if ((tls_mask & tls_gd) != 0)
7224 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7225 + R_PPC64_GOT_TPREL16_DS);
7226 else
7227 {
7228 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7229 rel->r_offset -= 2;
7230 r_type = R_PPC64_NONE;
7231 }
7232 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7233 }
7234 break;
7235
7236 case R_PPC64_GOT_TLSGD16:
7237 case R_PPC64_GOT_TLSGD16_LO:
7238 tls_gd = TLS_TPRELGD;
7239 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7240 goto tls_get_addr_check;
7241 break;
7242
7243 case R_PPC64_GOT_TLSLD16:
7244 case R_PPC64_GOT_TLSLD16_LO:
7245 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7246 {
7247 tls_get_addr_check:
7248 if (rel + 1 < relend)
7249 {
7250 enum elf_ppc64_reloc_type r_type2;
7251 unsigned long r_symndx2;
7252 struct elf_link_hash_entry *h2;
7253 bfd_vma insn1, insn2, insn3;
7254 bfd_vma offset;
7255
7256 /* The next instruction should be a call to
7257 __tls_get_addr. Peek at the reloc to be sure. */
7258 r_type2
7259 = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel[1].r_info);
7260 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7261 if (r_symndx2 < symtab_hdr->sh_info
7262 || (r_type2 != R_PPC64_REL14
7263 && r_type2 != R_PPC64_REL14_BRTAKEN
7264 && r_type2 != R_PPC64_REL14_BRNTAKEN
7265 && r_type2 != R_PPC64_REL24))
7266 break;
7267
7268 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7269 while (h2->root.type == bfd_link_hash_indirect
7270 || h2->root.type == bfd_link_hash_warning)
7271 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7272 if (h2 == NULL || h2 != htab->tls_get_addr)
7273 break;
7274
7275 /* OK, it checks out. Replace the call. */
7276 offset = rel[1].r_offset;
7277 insn1 = bfd_get_32 (output_bfd,
7278 contents + rel->r_offset - 2);
7279 insn3 = bfd_get_32 (output_bfd,
7280 contents + offset + 4);
7281 if ((tls_mask & tls_gd) != 0)
7282 {
7283 /* IE */
7284 insn1 &= (1 << 26) - (1 << 2);
7285 insn1 |= 58 << 26; /* ld */
7286 insn2 = 0x7c636a14; /* add 3,3,13 */
7287 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7288 if ((tls_mask & TLS_EXPLICIT) == 0)
7289 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7290 + R_PPC64_GOT_TPREL16_DS);
7291 else
7292 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7293 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7294 }
7295 else
7296 {
7297 /* LE */
7298 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7299 insn2 = 0x38630000; /* addi 3,3,0 */
7300 if (tls_gd == 0)
7301 {
7302 /* Was an LD reloc. */
7303 r_symndx = 0;
7304 rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
7305 rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
7306 }
7307 r_type = R_PPC64_TPREL16_HA;
7308 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7309 rel[1].r_info = ELF64_R_INFO (r_symndx,
7310 R_PPC64_TPREL16_LO);
7311 rel[1].r_offset += 2;
7312 }
7313 if (insn3 == NOP
7314 || insn3 == CROR_151515 || insn3 == CROR_313131)
7315 {
7316 insn3 = insn2;
7317 insn2 = NOP;
7318 rel[1].r_offset += 4;
7319 }
7320 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7321 bfd_put_32 (output_bfd, insn2, contents + offset);
7322 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7323 if (tls_gd == 0)
7324 {
7325 /* We changed the symbol on an LD reloc. Start over
7326 in order to get h, sym, sec etc. right. */
7327 rel--;
7328 continue;
7329 }
7330 }
7331 }
7332 break;
7333
7334 case R_PPC64_DTPMOD64:
7335 if (rel + 1 < relend
7336 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7337 && rel[1].r_offset == rel->r_offset + 8)
7338 {
7339 if ((tls_mask & TLS_GD) == 0)
7340 {
7341 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7342 if ((tls_mask & TLS_TPRELGD) != 0)
7343 r_type = R_PPC64_TPREL64;
7344 else
7345 {
7346 bfd_put_64 (output_bfd, (bfd_vma) 1,
7347 contents + rel->r_offset);
7348 r_type = R_PPC64_NONE;
7349 }
7350 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7351 }
7352 }
7353 else
7354 {
7355 if ((tls_mask & TLS_LD) == 0)
7356 {
7357 bfd_put_64 (output_bfd, (bfd_vma) 1,
7358 contents + rel->r_offset);
7359 r_type = R_PPC64_NONE;
7360 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7361 }
7362 }
7363 break;
7364
7365 case R_PPC64_TPREL64:
7366 if ((tls_mask & TLS_TPREL) == 0)
7367 {
7368 r_type = R_PPC64_NONE;
7369 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7370 }
7371 break;
7372 }
7373
7374 /* Handle other relocations that tweak non-addend part of insn. */
7375 insn = 0;
7376 switch (r_type)
7377 {
7378 default:
7379 break;
7380
7381 /* Branch taken prediction relocations. */
7382 case R_PPC64_ADDR14_BRTAKEN:
7383 case R_PPC64_REL14_BRTAKEN:
7384 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7385 /* Fall thru. */
7386
7387 /* Branch not taken prediction relocations. */
7388 case R_PPC64_ADDR14_BRNTAKEN:
7389 case R_PPC64_REL14_BRNTAKEN:
7390 insn |= bfd_get_32 (output_bfd,
7391 contents + rel->r_offset) & ~(0x01 << 21);
7392 if (is_power4)
7393 {
7394 /* Set 'a' bit. This is 0b00010 in BO field for branch
7395 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7396 for branch on CTR insns (BO == 1a00t or 1a01t). */
7397 if ((insn & (0x14 << 21)) == (0x04 << 21))
7398 insn |= 0x02 << 21;
7399 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7400 insn |= 0x08 << 21;
7401 else
7402 break;
7403 }
7404 else
7405 {
7406 from = (rel->r_offset
7407 + input_section->output_offset
7408 + input_section->output_section->vma);
7409
7410 /* Invert 'y' bit if not the default. */
7411 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7412 insn ^= 0x01 << 21;
7413 }
7414
7415 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + rel->r_offset);
7416 break;
7417
7418 case R_PPC64_REL24:
7419 /* A REL24 branching to a linkage function is followed by a
7420 nop. We replace the nop with a ld in order to restore
7421 the TOC base pointer. Only calls to shared objects need
7422 to alter the TOC base. These are recognized by their
7423 need for a PLT entry. */
7424 if (h != NULL
7425 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
7426 && fdh->plt.plist != NULL
7427 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7428 rel, htab)) != NULL)
7429 {
7430 bfd_boolean can_plt_call = 0;
7431
7432 if (rel->r_offset + 8 <= input_section->_cooked_size)
7433 {
7434 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7435 if (insn == NOP
7436 || insn == CROR_151515 || insn == CROR_313131)
7437 {
7438 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
7439 contents + rel->r_offset + 4);
7440 can_plt_call = 1;
7441 }
7442 }
7443
7444 if (!can_plt_call)
7445 {
7446 /* If this is a plain branch rather than a branch
7447 and link, don't require a nop. */
7448 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7449 if ((insn & 1) == 0)
7450 can_plt_call = 1;
7451 }
7452
7453 if (can_plt_call)
7454 {
7455 relocation = (stub_entry->stub_offset
7456 + stub_entry->stub_sec->output_offset
7457 + stub_entry->stub_sec->output_section->vma);
7458 unresolved_reloc = FALSE;
7459 }
7460 }
7461
7462 if (h != NULL
7463 && h->root.type == bfd_link_hash_undefweak
7464 && relocation == 0
7465 && rel->r_addend == 0)
7466 {
7467 /* Tweak calls to undefined weak functions to point at a
7468 blr. We can thus call a weak function without first
7469 checking whether the function is defined. We have a
7470 blr at the end of .sfpr. */
7471 BFD_ASSERT (htab->sfpr->_raw_size != 0);
7472 relocation = (htab->sfpr->_raw_size - 4
7473 + htab->sfpr->output_offset
7474 + htab->sfpr->output_section->vma);
7475 from = (rel->r_offset
7476 + input_section->output_offset
7477 + input_section->output_section->vma);
7478
7479 /* But let's not be silly about it. If the blr isn't in
7480 reach, just go to the next instruction. */
7481 if (relocation - from + (1 << 25) >= (1 << 26)
7482 || htab->sfpr->_raw_size == 0)
7483 relocation = from + 4;
7484 }
7485 break;
7486 }
7487
7488 /* Set `addend'. */
7489 tls_type = 0;
7490 addend = rel->r_addend;
7491 switch (r_type)
7492 {
7493 default:
7494 (*_bfd_error_handler)
7495 (_("%s: unknown relocation type %d for symbol %s"),
7496 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
7497
7498 bfd_set_error (bfd_error_bad_value);
7499 ret = FALSE;
7500 continue;
7501
7502 case R_PPC64_NONE:
7503 case R_PPC64_TLS:
7504 case R_PPC64_GNU_VTINHERIT:
7505 case R_PPC64_GNU_VTENTRY:
7506 continue;
7507
7508 /* GOT16 relocations. Like an ADDR16 using the symbol's
7509 address in the GOT as relocation value instead of the
7510 symbol's value itself. Also, create a GOT entry for the
7511 symbol and put the symbol value there. */
7512 case R_PPC64_GOT_TLSGD16:
7513 case R_PPC64_GOT_TLSGD16_LO:
7514 case R_PPC64_GOT_TLSGD16_HI:
7515 case R_PPC64_GOT_TLSGD16_HA:
7516 tls_type = TLS_TLS | TLS_GD;
7517 goto dogot;
7518
7519 case R_PPC64_GOT_TLSLD16:
7520 case R_PPC64_GOT_TLSLD16_LO:
7521 case R_PPC64_GOT_TLSLD16_HI:
7522 case R_PPC64_GOT_TLSLD16_HA:
7523 tls_type = TLS_TLS | TLS_LD;
7524 goto dogot;
7525
7526 case R_PPC64_GOT_TPREL16_DS:
7527 case R_PPC64_GOT_TPREL16_LO_DS:
7528 case R_PPC64_GOT_TPREL16_HI:
7529 case R_PPC64_GOT_TPREL16_HA:
7530 tls_type = TLS_TLS | TLS_TPREL;
7531 goto dogot;
7532
7533 case R_PPC64_GOT_DTPREL16_DS:
7534 case R_PPC64_GOT_DTPREL16_LO_DS:
7535 case R_PPC64_GOT_DTPREL16_HI:
7536 case R_PPC64_GOT_DTPREL16_HA:
7537 tls_type = TLS_TLS | TLS_DTPREL;
7538 goto dogot;
7539
7540 case R_PPC64_GOT16:
7541 case R_PPC64_GOT16_LO:
7542 case R_PPC64_GOT16_HI:
7543 case R_PPC64_GOT16_HA:
7544 case R_PPC64_GOT16_DS:
7545 case R_PPC64_GOT16_LO_DS:
7546 dogot:
7547 {
7548 /* Relocation is to the entry for this symbol in the global
7549 offset table. */
7550 bfd_vma *offp;
7551 bfd_vma off;
7552 unsigned long indx = 0;
7553
7554 if (htab->sgot == NULL)
7555 abort ();
7556
7557 if (tls_type == (TLS_TLS | TLS_LD)
7558 && (h == NULL
7559 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
7560 offp = &htab->tlsld_got.offset;
7561 else
7562 {
7563 struct got_entry *ent;
7564
7565 if (h != NULL)
7566 {
7567 bfd_boolean dyn = htab->elf.dynamic_sections_created;
7568 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
7569 || (info->shared
7570 && (info->symbolic
7571 || h->dynindx == -1
7572 || (h->elf_link_hash_flags
7573 & ELF_LINK_FORCED_LOCAL))
7574 && (h->elf_link_hash_flags
7575 & ELF_LINK_HASH_DEF_REGULAR)))
7576 /* This is actually a static link, or it is a
7577 -Bsymbolic link and the symbol is defined
7578 locally, or the symbol was forced to be local
7579 because of a version file. */
7580 ;
7581 else
7582 {
7583 indx = h->dynindx;
7584 unresolved_reloc = FALSE;
7585 }
7586 ent = h->got.glist;
7587 }
7588 else
7589 {
7590 if (local_got_ents == NULL)
7591 abort ();
7592 ent = local_got_ents[r_symndx];
7593 }
7594
7595 for (; ent != NULL; ent = ent->next)
7596 if (ent->addend == rel->r_addend
7597 && ent->tls_type == tls_type)
7598 break;
7599 if (ent == NULL)
7600 abort ();
7601 offp = &ent->got.offset;
7602 }
7603
7604 /* The offset must always be a multiple of 8. We use the
7605 least significant bit to record whether we have already
7606 processed this entry. */
7607 off = *offp;
7608 if ((off & 1) != 0)
7609 off &= ~1;
7610 else
7611 {
7612 /* Generate relocs for the dynamic linker, except in
7613 the case of TLSLD where we'll use one entry per
7614 module. */
7615 *offp = off | 1;
7616 if (info->shared || indx != 0)
7617 {
7618 outrel.r_offset = (htab->sgot->output_section->vma
7619 + htab->sgot->output_offset
7620 + off);
7621 if (tls_type & (TLS_LD | TLS_GD))
7622 {
7623 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
7624 outrel.r_addend = 0;
7625 if (tls_type == (TLS_TLS | TLS_GD))
7626 {
7627 loc = htab->srelgot->contents;
7628 loc += (htab->srelgot->reloc_count++
7629 * sizeof (Elf64_External_Rela));
7630 bfd_elf64_swap_reloca_out (output_bfd,
7631 &outrel, loc);
7632 outrel.r_info
7633 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
7634 outrel.r_offset += 8;
7635 }
7636 }
7637 else if (tls_type == (TLS_TLS | TLS_DTPREL))
7638 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
7639 else if (tls_type == (TLS_TLS | TLS_TPREL))
7640 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
7641 else if (indx == 0)
7642 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
7643 else
7644 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
7645 outrel.r_addend = rel->r_addend;
7646 if (indx == 0)
7647 outrel.r_addend += relocation;
7648 loc = htab->srelgot->contents;
7649 loc += (htab->srelgot->reloc_count++
7650 * sizeof (Elf64_External_Rela));
7651 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
7652 }
7653
7654 /* Init the .got section contents if we're not
7655 emitting a reloc. */
7656 else
7657 {
7658 relocation += rel->r_addend;
7659 if (tls_type != 0)
7660 {
7661 relocation -= htab->tls_sec->vma + DTP_OFFSET;
7662 if ((tls_type & TLS_TPREL) != 0)
7663 relocation += DTP_OFFSET - TP_OFFSET;
7664 }
7665
7666 if ((tls_type & TLS_GD) != 0)
7667 {
7668 bfd_put_64 (output_bfd, relocation,
7669 htab->sgot->contents + off + 8);
7670 relocation = 1;
7671 }
7672 else if (tls_type == (TLS_TLS | TLS_LD))
7673 relocation = 1;
7674 bfd_put_64 (output_bfd, relocation,
7675 htab->sgot->contents + off);
7676 }
7677 }
7678
7679 if (off >= (bfd_vma) -2)
7680 abort ();
7681
7682 relocation = htab->sgot->output_offset + off;
7683
7684 /* TOC base (r2) is TOC start plus 0x8000. */
7685 addend = - TOC_BASE_OFF;
7686 }
7687 break;
7688
7689 case R_PPC64_PLT16_HA:
7690 case R_PPC64_PLT16_HI:
7691 case R_PPC64_PLT16_LO:
7692 case R_PPC64_PLT32:
7693 case R_PPC64_PLT64:
7694 /* Relocation is to the entry for this symbol in the
7695 procedure linkage table. */
7696
7697 /* Resolve a PLT reloc against a local symbol directly,
7698 without using the procedure linkage table. */
7699 if (h == NULL)
7700 break;
7701
7702 /* It's possible that we didn't make a PLT entry for this
7703 symbol. This happens when statically linking PIC code,
7704 or when using -Bsymbolic. Go find a match if there is a
7705 PLT entry. */
7706 if (htab->splt != NULL)
7707 {
7708 struct plt_entry *ent;
7709 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7710 if (ent->addend == rel->r_addend
7711 && ent->plt.offset != (bfd_vma) -1)
7712 {
7713 relocation = (htab->splt->output_section->vma
7714 + htab->splt->output_offset
7715 + ent->plt.offset);
7716 unresolved_reloc = FALSE;
7717 }
7718 }
7719 break;
7720
7721 /* TOC16 relocs. We want the offset relative to the TOC base,
7722 which is the address of the start of the TOC plus 0x8000.
7723 The TOC consists of sections .got, .toc, .tocbss, and .plt,
7724 in this order. */
7725 case R_PPC64_TOC16:
7726 case R_PPC64_TOC16_LO:
7727 case R_PPC64_TOC16_HI:
7728 case R_PPC64_TOC16_DS:
7729 case R_PPC64_TOC16_LO_DS:
7730 case R_PPC64_TOC16_HA:
7731 addend -= TOCstart + TOC_BASE_OFF;
7732 break;
7733
7734 /* Relocate against the beginning of the section. */
7735 case R_PPC64_SECTOFF:
7736 case R_PPC64_SECTOFF_LO:
7737 case R_PPC64_SECTOFF_HI:
7738 case R_PPC64_SECTOFF_DS:
7739 case R_PPC64_SECTOFF_LO_DS:
7740 case R_PPC64_SECTOFF_HA:
7741 if (sec != (asection *) 0)
7742 addend -= sec->output_section->vma;
7743 break;
7744
7745 case R_PPC64_REL14:
7746 case R_PPC64_REL14_BRNTAKEN:
7747 case R_PPC64_REL14_BRTAKEN:
7748 case R_PPC64_REL24:
7749 break;
7750
7751 case R_PPC64_TPREL16:
7752 case R_PPC64_TPREL16_LO:
7753 case R_PPC64_TPREL16_HI:
7754 case R_PPC64_TPREL16_HA:
7755 case R_PPC64_TPREL16_DS:
7756 case R_PPC64_TPREL16_LO_DS:
7757 case R_PPC64_TPREL16_HIGHER:
7758 case R_PPC64_TPREL16_HIGHERA:
7759 case R_PPC64_TPREL16_HIGHEST:
7760 case R_PPC64_TPREL16_HIGHESTA:
7761 addend -= htab->tls_sec->vma + TP_OFFSET;
7762 if (info->shared)
7763 /* The TPREL16 relocs shouldn't really be used in shared
7764 libs as they will result in DT_TEXTREL being set, but
7765 support them anyway. */
7766 goto dodyn;
7767 break;
7768
7769 case R_PPC64_DTPREL16:
7770 case R_PPC64_DTPREL16_LO:
7771 case R_PPC64_DTPREL16_HI:
7772 case R_PPC64_DTPREL16_HA:
7773 case R_PPC64_DTPREL16_DS:
7774 case R_PPC64_DTPREL16_LO_DS:
7775 case R_PPC64_DTPREL16_HIGHER:
7776 case R_PPC64_DTPREL16_HIGHERA:
7777 case R_PPC64_DTPREL16_HIGHEST:
7778 case R_PPC64_DTPREL16_HIGHESTA:
7779 addend -= htab->tls_sec->vma + DTP_OFFSET;
7780 break;
7781
7782 case R_PPC64_TPREL64:
7783 addend -= htab->tls_sec->vma + TP_OFFSET;
7784 goto dodyn;
7785
7786 case R_PPC64_DTPREL64:
7787 addend -= htab->tls_sec->vma + DTP_OFFSET;
7788 /* Fall thru */
7789
7790 /* Relocations that may need to be propagated if this is a
7791 dynamic object. */
7792 case R_PPC64_DTPMOD64:
7793 case R_PPC64_REL30:
7794 case R_PPC64_REL32:
7795 case R_PPC64_REL64:
7796 case R_PPC64_ADDR14:
7797 case R_PPC64_ADDR14_BRNTAKEN:
7798 case R_PPC64_ADDR14_BRTAKEN:
7799 case R_PPC64_ADDR16:
7800 case R_PPC64_ADDR16_DS:
7801 case R_PPC64_ADDR16_HA:
7802 case R_PPC64_ADDR16_HI:
7803 case R_PPC64_ADDR16_HIGHER:
7804 case R_PPC64_ADDR16_HIGHERA:
7805 case R_PPC64_ADDR16_HIGHEST:
7806 case R_PPC64_ADDR16_HIGHESTA:
7807 case R_PPC64_ADDR16_LO:
7808 case R_PPC64_ADDR16_LO_DS:
7809 case R_PPC64_ADDR24:
7810 case R_PPC64_ADDR32:
7811 case R_PPC64_ADDR64:
7812 case R_PPC64_UADDR16:
7813 case R_PPC64_UADDR32:
7814 case R_PPC64_UADDR64:
7815 /* r_symndx will be zero only for relocs against symbols
7816 from removed linkonce sections, or sections discarded by
7817 a linker script. */
7818 dodyn:
7819 if (r_symndx == 0)
7820 break;
7821 /* Fall thru. */
7822
7823 case R_PPC64_TOC:
7824 if ((input_section->flags & SEC_ALLOC) == 0)
7825 break;
7826
7827 if (NO_OPD_RELOCS && is_opd)
7828 break;
7829
7830 if ((info->shared
7831 && (MUST_BE_DYN_RELOC (r_type)
7832 || (h != NULL
7833 && h->dynindx != -1
7834 && (! info->symbolic
7835 || (h->elf_link_hash_flags
7836 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
7837 || (!info->shared
7838 && h != NULL
7839 && h->dynindx != -1
7840 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
7841 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
7842 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
7843 {
7844 Elf_Internal_Rela outrel;
7845 bfd_boolean skip, relocate;
7846 asection *sreloc;
7847 bfd_byte *loc;
7848
7849 /* When generating a dynamic object, these relocations
7850 are copied into the output file to be resolved at run
7851 time. */
7852
7853 skip = FALSE;
7854 relocate = FALSE;
7855
7856 outrel.r_offset =
7857 _bfd_elf_section_offset (output_bfd, info, input_section,
7858 rel->r_offset);
7859 if (outrel.r_offset == (bfd_vma) -1)
7860 skip = TRUE;
7861 else if (outrel.r_offset == (bfd_vma) -2)
7862 skip = TRUE, relocate = TRUE;
7863 outrel.r_offset += (input_section->output_section->vma
7864 + input_section->output_offset);
7865 outrel.r_addend = rel->r_addend;
7866
7867 if (skip)
7868 memset (&outrel, 0, sizeof outrel);
7869 else if (h != NULL
7870 && h->dynindx != -1
7871 && !is_opd
7872 && (!MUST_BE_DYN_RELOC (r_type)
7873 || !info->shared
7874 || !info->symbolic
7875 || (h->elf_link_hash_flags
7876 & ELF_LINK_HASH_DEF_REGULAR) == 0))
7877 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
7878 else
7879 {
7880 /* This symbol is local, or marked to become local,
7881 or this is an opd section reloc which must point
7882 at a local function. */
7883 outrel.r_addend += relocation;
7884 /* ??? why? */
7885 relocate = TRUE;
7886 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
7887 {
7888 if (is_opd && h != NULL)
7889 {
7890 /* Lie about opd entries. This case occurs
7891 when building shared libraries and we
7892 reference a function in another shared
7893 lib. The same thing happens for a weak
7894 definition in an application that's
7895 overridden by a strong definition in a
7896 shared lib. (I believe this is a generic
7897 bug in binutils handling of weak syms.)
7898 In these cases we won't use the opd
7899 entry in this lib. */
7900 unresolved_reloc = FALSE;
7901 }
7902 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7903 }
7904 else
7905 {
7906 long indx = 0;
7907
7908 if (bfd_is_abs_section (sec))
7909 ;
7910 else if (sec == NULL || sec->owner == NULL)
7911 {
7912 bfd_set_error (bfd_error_bad_value);
7913 return FALSE;
7914 }
7915 else
7916 {
7917 asection *osec;
7918
7919 osec = sec->output_section;
7920 indx = elf_section_data (osec)->dynindx;
7921
7922 /* We are turning this relocation into one
7923 against a section symbol, so subtract out
7924 the output section's address but not the
7925 offset of the input section in the output
7926 section. */
7927 outrel.r_addend -= osec->vma;
7928 }
7929
7930 outrel.r_info = ELF64_R_INFO (indx, r_type);
7931 }
7932 }
7933
7934 sreloc = elf_section_data (input_section)->sreloc;
7935 if (sreloc == NULL)
7936 abort ();
7937
7938 loc = sreloc->contents;
7939 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
7940 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
7941
7942 /* If this reloc is against an external symbol, it will
7943 be computed at runtime, so there's no need to do
7944 anything now. */
7945 if (! relocate)
7946 continue;
7947 }
7948 break;
7949
7950 case R_PPC64_COPY:
7951 case R_PPC64_GLOB_DAT:
7952 case R_PPC64_JMP_SLOT:
7953 case R_PPC64_RELATIVE:
7954 /* We shouldn't ever see these dynamic relocs in relocatable
7955 files. */
7956 /* Fall through. */
7957
7958 case R_PPC64_PLTGOT16:
7959 case R_PPC64_PLTGOT16_DS:
7960 case R_PPC64_PLTGOT16_HA:
7961 case R_PPC64_PLTGOT16_HI:
7962 case R_PPC64_PLTGOT16_LO:
7963 case R_PPC64_PLTGOT16_LO_DS:
7964 case R_PPC64_PLTREL32:
7965 case R_PPC64_PLTREL64:
7966 /* These ones haven't been implemented yet. */
7967
7968 (*_bfd_error_handler)
7969 (_("%s: Relocation %s is not supported for symbol %s."),
7970 bfd_archive_filename (input_bfd),
7971 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
7972
7973 bfd_set_error (bfd_error_invalid_operation);
7974 ret = FALSE;
7975 continue;
7976 }
7977
7978 /* Do any further special processing. */
7979 switch (r_type)
7980 {
7981 default:
7982 break;
7983
7984 case R_PPC64_ADDR16_HA:
7985 case R_PPC64_ADDR16_HIGHERA:
7986 case R_PPC64_ADDR16_HIGHESTA:
7987 case R_PPC64_GOT16_HA:
7988 case R_PPC64_PLTGOT16_HA:
7989 case R_PPC64_PLT16_HA:
7990 case R_PPC64_TOC16_HA:
7991 case R_PPC64_SECTOFF_HA:
7992 case R_PPC64_TPREL16_HA:
7993 case R_PPC64_DTPREL16_HA:
7994 case R_PPC64_GOT_TLSGD16_HA:
7995 case R_PPC64_GOT_TLSLD16_HA:
7996 case R_PPC64_GOT_TPREL16_HA:
7997 case R_PPC64_GOT_DTPREL16_HA:
7998 case R_PPC64_TPREL16_HIGHER:
7999 case R_PPC64_TPREL16_HIGHERA:
8000 case R_PPC64_TPREL16_HIGHEST:
8001 case R_PPC64_TPREL16_HIGHESTA:
8002 case R_PPC64_DTPREL16_HIGHER:
8003 case R_PPC64_DTPREL16_HIGHERA:
8004 case R_PPC64_DTPREL16_HIGHEST:
8005 case R_PPC64_DTPREL16_HIGHESTA:
8006 /* It's just possible that this symbol is a weak symbol
8007 that's not actually defined anywhere. In that case,
8008 'sec' would be NULL, and we should leave the symbol
8009 alone (it will be set to zero elsewhere in the link). */
8010 if (sec != NULL)
8011 /* Add 0x10000 if sign bit in 0:15 is set. */
8012 addend += ((relocation + addend) & 0x8000) << 1;
8013 break;
8014
8015 case R_PPC64_ADDR16_DS:
8016 case R_PPC64_ADDR16_LO_DS:
8017 case R_PPC64_GOT16_DS:
8018 case R_PPC64_GOT16_LO_DS:
8019 case R_PPC64_PLT16_LO_DS:
8020 case R_PPC64_SECTOFF_DS:
8021 case R_PPC64_SECTOFF_LO_DS:
8022 case R_PPC64_TOC16_DS:
8023 case R_PPC64_TOC16_LO_DS:
8024 case R_PPC64_PLTGOT16_DS:
8025 case R_PPC64_PLTGOT16_LO_DS:
8026 case R_PPC64_GOT_TPREL16_DS:
8027 case R_PPC64_GOT_TPREL16_LO_DS:
8028 case R_PPC64_GOT_DTPREL16_DS:
8029 case R_PPC64_GOT_DTPREL16_LO_DS:
8030 case R_PPC64_TPREL16_DS:
8031 case R_PPC64_TPREL16_LO_DS:
8032 case R_PPC64_DTPREL16_DS:
8033 case R_PPC64_DTPREL16_LO_DS:
8034 if (((relocation + addend) & 3) != 0)
8035 {
8036 (*_bfd_error_handler)
8037 (_("%s: error: relocation %s not a multiple of 4"),
8038 bfd_archive_filename (input_bfd),
8039 ppc64_elf_howto_table[(int) r_type]->name);
8040 bfd_set_error (bfd_error_bad_value);
8041 ret = FALSE;
8042 continue;
8043 }
8044 break;
8045
8046 case R_PPC64_REL14:
8047 case R_PPC64_REL14_BRNTAKEN:
8048 case R_PPC64_REL14_BRTAKEN:
8049 max_br_offset = 1 << 15;
8050 goto branch_check;
8051
8052 case R_PPC64_REL24:
8053 max_br_offset = 1 << 25;
8054
8055 branch_check:
8056 /* If the branch is out of reach, then redirect the
8057 call to the local stub for this function. */
8058 from = (rel->r_offset
8059 + input_section->output_offset
8060 + input_section->output_section->vma);
8061 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
8062 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8063 rel, htab)) != NULL)
8064 {
8065 /* Munge up the value and addend so that we call the stub
8066 rather than the procedure directly. */
8067 relocation = (stub_entry->stub_offset
8068 + stub_entry->stub_sec->output_offset
8069 + stub_entry->stub_sec->output_section->vma);
8070 addend = 0;
8071 }
8072 break;
8073 }
8074
8075 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8076 because such sections are not SEC_ALLOC and thus ld.so will
8077 not process them. */
8078 if (unresolved_reloc
8079 && !((input_section->flags & SEC_DEBUGGING) != 0
8080 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8081 {
8082 (*_bfd_error_handler)
8083 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
8084 bfd_archive_filename (input_bfd),
8085 bfd_get_section_name (input_bfd, input_section),
8086 (long) rel->r_offset,
8087 h->root.root.string);
8088 ret = FALSE;
8089 }
8090
8091 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8092 input_bfd,
8093 input_section,
8094 contents,
8095 rel->r_offset,
8096 relocation,
8097 addend);
8098
8099 if (r != bfd_reloc_ok)
8100 {
8101 if (sym_name == NULL)
8102 sym_name = "(null)";
8103 if (r == bfd_reloc_overflow)
8104 {
8105 if (warned)
8106 continue;
8107 if (h != NULL
8108 && h->root.type == bfd_link_hash_undefweak
8109 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
8110 {
8111 /* Assume this is a call protected by other code that
8112 detects the symbol is undefined. If this is the case,
8113 we can safely ignore the overflow. If not, the
8114 program is hosed anyway, and a little warning isn't
8115 going to help. */
8116
8117 continue;
8118 }
8119
8120 if (!((*info->callbacks->reloc_overflow)
8121 (info, sym_name, ppc64_elf_howto_table[(int) r_type]->name,
8122 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8123 return FALSE;
8124 }
8125 else
8126 {
8127 (*_bfd_error_handler)
8128 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
8129 bfd_archive_filename (input_bfd),
8130 bfd_get_section_name (input_bfd, input_section),
8131 (long) rel->r_offset, sym_name, (int) r);
8132 ret = FALSE;
8133 }
8134 }
8135 }
8136
8137 return ret;
8138 }
8139
8140 /* Finish up dynamic symbol handling. We set the contents of various
8141 dynamic sections here. */
8142
8143 static bfd_boolean
8144 ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
8145 bfd *output_bfd;
8146 struct bfd_link_info *info;
8147 struct elf_link_hash_entry *h;
8148 Elf_Internal_Sym *sym;
8149 {
8150 struct ppc_link_hash_table *htab;
8151 bfd *dynobj;
8152
8153 htab = ppc_hash_table (info);
8154 dynobj = htab->elf.dynobj;
8155
8156 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8157 {
8158 struct plt_entry *ent;
8159 Elf_Internal_Rela rela;
8160 bfd_byte *loc;
8161
8162 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8163 if (ent->plt.offset != (bfd_vma) -1)
8164 {
8165 /* This symbol has an entry in the procedure linkage
8166 table. Set it up. */
8167
8168 if (htab->splt == NULL
8169 || htab->srelplt == NULL
8170 || htab->sglink == NULL)
8171 abort ();
8172
8173 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8174 fill in the PLT entry. */
8175 rela.r_offset = (htab->splt->output_section->vma
8176 + htab->splt->output_offset
8177 + ent->plt.offset);
8178 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8179 rela.r_addend = ent->addend;
8180
8181 loc = htab->srelplt->contents;
8182 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8183 * sizeof (Elf64_External_Rela));
8184 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8185 }
8186 }
8187
8188 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8189 {
8190 Elf_Internal_Rela rela;
8191 bfd_byte *loc;
8192
8193 /* This symbol needs a copy reloc. Set it up. */
8194
8195 if (h->dynindx == -1
8196 || (h->root.type != bfd_link_hash_defined
8197 && h->root.type != bfd_link_hash_defweak)
8198 || htab->srelbss == NULL)
8199 abort ();
8200
8201 rela.r_offset = (h->root.u.def.value
8202 + h->root.u.def.section->output_section->vma
8203 + h->root.u.def.section->output_offset);
8204 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8205 rela.r_addend = 0;
8206 loc = htab->srelbss->contents;
8207 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
8208 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8209 }
8210
8211 /* Mark some specially defined symbols as absolute. */
8212 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8213 sym->st_shndx = SHN_ABS;
8214
8215 return TRUE;
8216 }
8217
8218 /* Used to decide how to sort relocs in an optimal manner for the
8219 dynamic linker, before writing them out. */
8220
8221 static enum elf_reloc_type_class
8222 ppc64_elf_reloc_type_class (rela)
8223 const Elf_Internal_Rela *rela;
8224 {
8225 enum elf_ppc64_reloc_type r_type;
8226
8227 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rela->r_info);
8228 switch (r_type)
8229 {
8230 case R_PPC64_RELATIVE:
8231 return reloc_class_relative;
8232 case R_PPC64_JMP_SLOT:
8233 return reloc_class_plt;
8234 case R_PPC64_COPY:
8235 return reloc_class_copy;
8236 default:
8237 return reloc_class_normal;
8238 }
8239 }
8240
8241 /* Finish up the dynamic sections. */
8242
8243 static bfd_boolean
8244 ppc64_elf_finish_dynamic_sections (output_bfd, info)
8245 bfd *output_bfd;
8246 struct bfd_link_info *info;
8247 {
8248 struct ppc_link_hash_table *htab;
8249 bfd *dynobj;
8250 asection *sdyn;
8251
8252 htab = ppc_hash_table (info);
8253 dynobj = htab->elf.dynobj;
8254 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8255
8256 if (htab->elf.dynamic_sections_created)
8257 {
8258 Elf64_External_Dyn *dyncon, *dynconend;
8259
8260 if (sdyn == NULL || htab->sgot == NULL)
8261 abort ();
8262
8263 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8264 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
8265 for (; dyncon < dynconend; dyncon++)
8266 {
8267 Elf_Internal_Dyn dyn;
8268 asection *s;
8269
8270 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8271
8272 switch (dyn.d_tag)
8273 {
8274 default:
8275 continue;
8276
8277 case DT_PPC64_GLINK:
8278 s = htab->sglink;
8279 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8280 break;
8281
8282 case DT_PPC64_OPD:
8283 s = bfd_get_section_by_name (output_bfd, ".opd");
8284 if (s == NULL)
8285 continue;
8286 dyn.d_un.d_ptr = s->vma;
8287 break;
8288
8289 case DT_PPC64_OPDSZ:
8290 s = bfd_get_section_by_name (output_bfd, ".opd");
8291 if (s == NULL)
8292 continue;
8293 dyn.d_un.d_val = s->_raw_size;
8294 break;
8295
8296 case DT_PLTGOT:
8297 s = htab->splt;
8298 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8299 break;
8300
8301 case DT_JMPREL:
8302 s = htab->srelplt;
8303 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8304 break;
8305
8306 case DT_PLTRELSZ:
8307 dyn.d_un.d_val = htab->srelplt->_raw_size;
8308 break;
8309
8310 case DT_RELASZ:
8311 /* Don't count procedure linkage table relocs in the
8312 overall reloc count. */
8313 s = htab->srelplt;
8314 if (s == NULL)
8315 continue;
8316 dyn.d_un.d_val -= s->_raw_size;
8317 break;
8318
8319 case DT_RELA:
8320 /* We may not be using the standard ELF linker script.
8321 If .rela.plt is the first .rela section, we adjust
8322 DT_RELA to not include it. */
8323 s = htab->srelplt;
8324 if (s == NULL)
8325 continue;
8326 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8327 continue;
8328 dyn.d_un.d_ptr += s->_raw_size;
8329 break;
8330 }
8331
8332 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8333 }
8334 }
8335
8336 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
8337 {
8338 /* Fill in the first entry in the global offset table.
8339 We use it to hold the link-time TOCbase. */
8340 bfd_put_64 (output_bfd,
8341 elf_gp (output_bfd) + TOC_BASE_OFF,
8342 htab->sgot->contents);
8343
8344 /* Set .got entry size. */
8345 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
8346 }
8347
8348 if (htab->splt != NULL && htab->splt->_raw_size != 0)
8349 {
8350 /* Set .plt entry size. */
8351 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
8352 = PLT_ENTRY_SIZE;
8353 }
8354
8355 return TRUE;
8356 }
8357
8358 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
8359 #define TARGET_LITTLE_NAME "elf64-powerpcle"
8360 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
8361 #define TARGET_BIG_NAME "elf64-powerpc"
8362 #define ELF_ARCH bfd_arch_powerpc
8363 #define ELF_MACHINE_CODE EM_PPC64
8364 #define ELF_MAXPAGESIZE 0x10000
8365 #define elf_info_to_howto ppc64_elf_info_to_howto
8366
8367 #ifdef EM_CYGNUS_POWERPC
8368 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8369 #endif
8370
8371 #ifdef EM_PPC_OLD
8372 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8373 #endif
8374
8375 #define elf_backend_want_got_sym 0
8376 #define elf_backend_want_plt_sym 0
8377 #define elf_backend_plt_alignment 3
8378 #define elf_backend_plt_not_loaded 1
8379 #define elf_backend_got_symbol_offset 0
8380 #define elf_backend_got_header_size 8
8381 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
8382 #define elf_backend_can_gc_sections 1
8383 #define elf_backend_can_refcount 1
8384 #define elf_backend_rela_normal 1
8385
8386 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
8387 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
8388 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
8389 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
8390 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
8391
8392 #define elf_backend_object_p ppc64_elf_object_p
8393 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
8394 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
8395 #define elf_backend_check_relocs ppc64_elf_check_relocs
8396 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
8397 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
8398 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
8399 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
8400 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
8401 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
8402 #define elf_backend_relocate_section ppc64_elf_relocate_section
8403 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
8404 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
8405 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
8406
8407 #include "elf64-target.h"
GDB Binutils - Deliverables
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