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Add support for dwarf2 debug information.
[binutils.git] / bfd / elf64-ppc.c
blob29c90fe32e4aa2be5586dbae9d3173fede9f1cd6
1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22 /* This file is based on the 64-bit PowerPC ELF ABI. It is also based
23 on the file elf32-ppc.c. */
24
25 #include "bfd.h"
26 #include "sysdep.h"
27 #include "bfdlink.h"
28 #include "libbfd.h"
29 #include "elf-bfd.h"
30 #include "elf/ppc64.h"
31 #include "elf64-ppc.h"
32
33 static void ppc_howto_init
34 PARAMS ((void));
35 static reloc_howto_type *ppc64_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37 static void ppc64_elf_info_to_howto
38 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst));
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
44 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
45 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
46 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
47 static bfd_reloc_status_type ppc64_elf_toc_reloc
48 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
49 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
50 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
51 static bfd_reloc_status_type ppc64_elf_toc64_reloc
52 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
53 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
54 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
55 static bfd_boolean ppc64_elf_object_p
56 PARAMS ((bfd *));
57 static bfd_boolean ppc64_elf_merge_private_bfd_data
58 PARAMS ((bfd *, bfd *));
59 static bfd_boolean ppc64_elf_new_section_hook
60 PARAMS ((bfd *, asection *));
61
62
63 /* The name of the dynamic interpreter. This is put in the .interp
64 section. */
65 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
66
67 /* The size in bytes of an entry in the procedure linkage table. */
68 #define PLT_ENTRY_SIZE 24
69
70 /* The initial size of the plt reserved for the dynamic linker. */
71 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
72
73 /* TOC base pointers offset from start of TOC. */
74 #define TOC_BASE_OFF 0x8000
75
76 /* Offset of tp and dtp pointers from start of TLS block. */
77 #define TP_OFFSET 0x7000
78 #define DTP_OFFSET 0x8000
79
80 /* .plt call stub instructions. */
81 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
82 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
83 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
84 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
85 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
86 /* ld %r11,xxx+16@l(%r12) */
87 #define BCTR 0x4e800420 /* bctr */
88
89 /* The normal stub is this size. */
90 #define PLT_CALL_STUB_SIZE (7*4)
91
92 /* But sometimes the .plt entry crosses a 64k boundary, and we need
93 to adjust the high word with this insn. */
94 #define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
95
96 /* The .glink fixup call stub is the same as the .plt call stub, but
97 the first instruction restores r2, and the std is omitted. */
98 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
99
100 /* Always allow this much space. */
101 #define GLINK_CALL_STUB_SIZE (8*4)
102
103 /* Pad with this. */
104 #define NOP 0x60000000
105
106 /* Some other nops. */
107 #define CROR_151515 0x4def7b82
108 #define CROR_313131 0x4ffffb82
109
110 /* .glink entries for the first 32k functions are two instructions. */
111 #define LI_R0_0 0x38000000 /* li %r0,0 */
112 #define B_DOT 0x48000000 /* b . */
113
114 /* After that, we need two instructions to load the index, followed by
115 a branch. */
116 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
117 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
118
119 /* Instructions to save and restore floating point regs. */
120 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
121 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
122 #define BLR 0x4e800020 /* blr */
123
124 /* Since .opd is an array of descriptors and each entry will end up
125 with identical R_PPC64_RELATIVE relocs, there is really no need to
126 propagate .opd relocs; The dynamic linker should be taught to
127 relocate .opd without reloc entries. */
128 #ifndef NO_OPD_RELOCS
129 #define NO_OPD_RELOCS 0
130 #endif
131 \f
132 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
133
134 /* Relocation HOWTO's. */
135 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
136
137 static reloc_howto_type ppc64_elf_howto_raw[] = {
138 /* This reloc does nothing. */
139 HOWTO (R_PPC64_NONE, /* type */
140 0, /* rightshift */
141 2, /* size (0 = byte, 1 = short, 2 = long) */
142 32, /* bitsize */
143 FALSE, /* pc_relative */
144 0, /* bitpos */
145 complain_overflow_dont, /* complain_on_overflow */
146 bfd_elf_generic_reloc, /* special_function */
147 "R_PPC64_NONE", /* name */
148 FALSE, /* partial_inplace */
149 0, /* src_mask */
150 0, /* dst_mask */
151 FALSE), /* pcrel_offset */
152
153 /* A standard 32 bit relocation. */
154 HOWTO (R_PPC64_ADDR32, /* type */
155 0, /* rightshift */
156 2, /* size (0 = byte, 1 = short, 2 = long) */
157 32, /* bitsize */
158 FALSE, /* pc_relative */
159 0, /* bitpos */
160 complain_overflow_bitfield, /* complain_on_overflow */
161 bfd_elf_generic_reloc, /* special_function */
162 "R_PPC64_ADDR32", /* name */
163 FALSE, /* partial_inplace */
164 0, /* src_mask */
165 0xffffffff, /* dst_mask */
166 FALSE), /* pcrel_offset */
167
168 /* An absolute 26 bit branch; the lower two bits must be zero.
169 FIXME: we don't check that, we just clear them. */
170 HOWTO (R_PPC64_ADDR24, /* type */
171 0, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 26, /* bitsize */
174 FALSE, /* pc_relative */
175 0, /* bitpos */
176 complain_overflow_bitfield, /* complain_on_overflow */
177 bfd_elf_generic_reloc, /* special_function */
178 "R_PPC64_ADDR24", /* name */
179 FALSE, /* partial_inplace */
180 0, /* src_mask */
181 0x03fffffc, /* dst_mask */
182 FALSE), /* pcrel_offset */
183
184 /* A standard 16 bit relocation. */
185 HOWTO (R_PPC64_ADDR16, /* type */
186 0, /* rightshift */
187 1, /* size (0 = byte, 1 = short, 2 = long) */
188 16, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_bitfield, /* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_PPC64_ADDR16", /* name */
194 FALSE, /* partial_inplace */
195 0, /* src_mask */
196 0xffff, /* dst_mask */
197 FALSE), /* pcrel_offset */
198
199 /* A 16 bit relocation without overflow. */
200 HOWTO (R_PPC64_ADDR16_LO, /* type */
201 0, /* rightshift */
202 1, /* size (0 = byte, 1 = short, 2 = long) */
203 16, /* bitsize */
204 FALSE, /* pc_relative */
205 0, /* bitpos */
206 complain_overflow_dont,/* complain_on_overflow */
207 bfd_elf_generic_reloc, /* special_function */
208 "R_PPC64_ADDR16_LO", /* name */
209 FALSE, /* partial_inplace */
210 0, /* src_mask */
211 0xffff, /* dst_mask */
212 FALSE), /* pcrel_offset */
213
214 /* Bits 16-31 of an address. */
215 HOWTO (R_PPC64_ADDR16_HI, /* type */
216 16, /* rightshift */
217 1, /* size (0 = byte, 1 = short, 2 = long) */
218 16, /* bitsize */
219 FALSE, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_dont, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_PPC64_ADDR16_HI", /* name */
224 FALSE, /* partial_inplace */
225 0, /* src_mask */
226 0xffff, /* dst_mask */
227 FALSE), /* pcrel_offset */
228
229 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
230 bits, treated as a signed number, is negative. */
231 HOWTO (R_PPC64_ADDR16_HA, /* type */
232 16, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 16, /* bitsize */
235 FALSE, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_dont, /* complain_on_overflow */
238 ppc64_elf_ha_reloc, /* special_function */
239 "R_PPC64_ADDR16_HA", /* name */
240 FALSE, /* partial_inplace */
241 0, /* src_mask */
242 0xffff, /* dst_mask */
243 FALSE), /* pcrel_offset */
244
245 /* An absolute 16 bit branch; the lower two bits must be zero.
246 FIXME: we don't check that, we just clear them. */
247 HOWTO (R_PPC64_ADDR14, /* type */
248 0, /* rightshift */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_bitfield, /* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_PPC64_ADDR14", /* name */
256 FALSE, /* partial_inplace */
257 0, /* src_mask */
258 0x0000fffc, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 /* An absolute 16 bit branch, for which bit 10 should be set to
262 indicate that the branch is expected to be taken. The lower two
263 bits must be zero. */
264 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
265 0, /* rightshift */
266 2, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_bitfield, /* complain_on_overflow */
271 ppc64_elf_brtaken_reloc, /* special_function */
272 "R_PPC64_ADDR14_BRTAKEN",/* name */
273 FALSE, /* partial_inplace */
274 0, /* src_mask */
275 0x0000fffc, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 /* An absolute 16 bit branch, for which bit 10 should be set to
279 indicate that the branch is not expected to be taken. The lower
280 two bits must be zero. */
281 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
282 0, /* rightshift */
283 2, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
285 FALSE, /* pc_relative */
286 0, /* bitpos */
287 complain_overflow_bitfield, /* complain_on_overflow */
288 ppc64_elf_brtaken_reloc, /* special_function */
289 "R_PPC64_ADDR14_BRNTAKEN",/* name */
290 FALSE, /* partial_inplace */
291 0, /* src_mask */
292 0x0000fffc, /* dst_mask */
293 FALSE), /* pcrel_offset */
294
295 /* A relative 26 bit branch; the lower two bits must be zero. */
296 HOWTO (R_PPC64_REL24, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 26, /* bitsize */
300 TRUE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_signed, /* complain_on_overflow */
303 bfd_elf_generic_reloc, /* special_function */
304 "R_PPC64_REL24", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0x03fffffc, /* dst_mask */
308 TRUE), /* pcrel_offset */
309
310 /* A relative 16 bit branch; the lower two bits must be zero. */
311 HOWTO (R_PPC64_REL14, /* type */
312 0, /* rightshift */
313 2, /* size (0 = byte, 1 = short, 2 = long) */
314 16, /* bitsize */
315 TRUE, /* pc_relative */
316 0, /* bitpos */
317 complain_overflow_signed, /* complain_on_overflow */
318 bfd_elf_generic_reloc, /* special_function */
319 "R_PPC64_REL14", /* name */
320 FALSE, /* partial_inplace */
321 0, /* src_mask */
322 0x0000fffc, /* dst_mask */
323 TRUE), /* pcrel_offset */
324
325 /* A relative 16 bit branch. Bit 10 should be set to indicate that
326 the branch is expected to be taken. The lower two bits must be
327 zero. */
328 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
329 0, /* rightshift */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
331 16, /* bitsize */
332 TRUE, /* pc_relative */
333 0, /* bitpos */
334 complain_overflow_signed, /* complain_on_overflow */
335 ppc64_elf_brtaken_reloc, /* special_function */
336 "R_PPC64_REL14_BRTAKEN", /* name */
337 FALSE, /* partial_inplace */
338 0, /* src_mask */
339 0x0000fffc, /* dst_mask */
340 TRUE), /* pcrel_offset */
341
342 /* A relative 16 bit branch. Bit 10 should be set to indicate that
343 the branch is not expected to be taken. The lower two bits must
344 be zero. */
345 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 16, /* bitsize */
349 TRUE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_signed, /* complain_on_overflow */
352 ppc64_elf_brtaken_reloc, /* special_function */
353 "R_PPC64_REL14_BRNTAKEN",/* name */
354 FALSE, /* partial_inplace */
355 0, /* src_mask */
356 0x0000fffc, /* dst_mask */
357 TRUE), /* pcrel_offset */
358
359 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
360 symbol. */
361 HOWTO (R_PPC64_GOT16, /* type */
362 0, /* rightshift */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 FALSE, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_unhandled_reloc, /* special_function */
369 "R_PPC64_GOT16", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0xffff, /* dst_mask */
373 FALSE), /* pcrel_offset */
374
375 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
376 the symbol. */
377 HOWTO (R_PPC64_GOT16_LO, /* type */
378 0, /* rightshift */
379 1, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 FALSE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_dont, /* complain_on_overflow */
384 ppc64_elf_unhandled_reloc, /* special_function */
385 "R_PPC64_GOT16_LO", /* name */
386 FALSE, /* partial_inplace */
387 0, /* src_mask */
388 0xffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
390
391 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
392 the symbol. */
393 HOWTO (R_PPC64_GOT16_HI, /* type */
394 16, /* rightshift */
395 1, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 FALSE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_dont,/* complain_on_overflow */
400 ppc64_elf_unhandled_reloc, /* special_function */
401 "R_PPC64_GOT16_HI", /* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0xffff, /* dst_mask */
405 FALSE), /* pcrel_offset */
406
407 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
408 the symbol. */
409 HOWTO (R_PPC64_GOT16_HA, /* type */
410 16, /* rightshift */
411 1, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_dont,/* complain_on_overflow */
416 ppc64_elf_unhandled_reloc, /* special_function */
417 "R_PPC64_GOT16_HA", /* name */
418 FALSE, /* partial_inplace */
419 0, /* src_mask */
420 0xffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
423 /* This is used only by the dynamic linker. The symbol should exist
424 both in the object being run and in some shared library. The
425 dynamic linker copies the data addressed by the symbol from the
426 shared library into the object, because the object being
427 run has to have the data at some particular address. */
428 HOWTO (R_PPC64_COPY, /* type */
429 0, /* rightshift */
430 0, /* this one is variable size */
431 0, /* bitsize */
432 FALSE, /* pc_relative */
433 0, /* bitpos */
434 complain_overflow_dont, /* complain_on_overflow */
435 ppc64_elf_unhandled_reloc, /* special_function */
436 "R_PPC64_COPY", /* name */
437 FALSE, /* partial_inplace */
438 0, /* src_mask */
439 0, /* dst_mask */
440 FALSE), /* pcrel_offset */
441
442 /* Like R_PPC64_ADDR64, but used when setting global offset table
443 entries. */
444 HOWTO (R_PPC64_GLOB_DAT, /* type */
445 0, /* rightshift */
446 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
447 64, /* bitsize */
448 FALSE, /* pc_relative */
449 0, /* bitpos */
450 complain_overflow_dont, /* complain_on_overflow */
451 ppc64_elf_unhandled_reloc, /* special_function */
452 "R_PPC64_GLOB_DAT", /* name */
453 FALSE, /* partial_inplace */
454 0, /* src_mask */
455 ONES (64), /* dst_mask */
456 FALSE), /* pcrel_offset */
457
458 /* Created by the link editor. Marks a procedure linkage table
459 entry for a symbol. */
460 HOWTO (R_PPC64_JMP_SLOT, /* type */
461 0, /* rightshift */
462 0, /* size (0 = byte, 1 = short, 2 = long) */
463 0, /* bitsize */
464 FALSE, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_dont, /* complain_on_overflow */
467 ppc64_elf_unhandled_reloc, /* special_function */
468 "R_PPC64_JMP_SLOT", /* name */
469 FALSE, /* partial_inplace */
470 0, /* src_mask */
471 0, /* dst_mask */
472 FALSE), /* pcrel_offset */
473
474 /* Used only by the dynamic linker. When the object is run, this
475 doubleword64 is set to the load address of the object, plus the
476 addend. */
477 HOWTO (R_PPC64_RELATIVE, /* type */
478 0, /* rightshift */
479 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
480 64, /* bitsize */
481 FALSE, /* pc_relative */
482 0, /* bitpos */
483 complain_overflow_dont, /* complain_on_overflow */
484 bfd_elf_generic_reloc, /* special_function */
485 "R_PPC64_RELATIVE", /* name */
486 FALSE, /* partial_inplace */
487 0, /* src_mask */
488 ONES (64), /* dst_mask */
489 FALSE), /* pcrel_offset */
490
491 /* Like R_PPC64_ADDR32, but may be unaligned. */
492 HOWTO (R_PPC64_UADDR32, /* type */
493 0, /* rightshift */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
495 32, /* bitsize */
496 FALSE, /* pc_relative */
497 0, /* bitpos */
498 complain_overflow_bitfield, /* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_PPC64_UADDR32", /* name */
501 FALSE, /* partial_inplace */
502 0, /* src_mask */
503 0xffffffff, /* dst_mask */
504 FALSE), /* pcrel_offset */
505
506 /* Like R_PPC64_ADDR16, but may be unaligned. */
507 HOWTO (R_PPC64_UADDR16, /* type */
508 0, /* rightshift */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
510 16, /* bitsize */
511 FALSE, /* pc_relative */
512 0, /* bitpos */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC64_UADDR16", /* name */
516 FALSE, /* partial_inplace */
517 0, /* src_mask */
518 0xffff, /* dst_mask */
519 FALSE), /* pcrel_offset */
520
521 /* 32-bit PC relative. */
522 HOWTO (R_PPC64_REL32, /* type */
523 0, /* rightshift */
524 2, /* size (0 = byte, 1 = short, 2 = long) */
525 32, /* bitsize */
526 TRUE, /* pc_relative */
527 0, /* bitpos */
528 /* FIXME: Verify. Was complain_overflow_bitfield. */
529 complain_overflow_signed, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC64_REL32", /* name */
532 FALSE, /* partial_inplace */
533 0, /* src_mask */
534 0xffffffff, /* dst_mask */
535 TRUE), /* pcrel_offset */
536
537 /* 32-bit relocation to the symbol's procedure linkage table. */
538 HOWTO (R_PPC64_PLT32, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 32, /* bitsize */
542 FALSE, /* pc_relative */
543 0, /* bitpos */
544 complain_overflow_bitfield, /* complain_on_overflow */
545 ppc64_elf_unhandled_reloc, /* special_function */
546 "R_PPC64_PLT32", /* name */
547 FALSE, /* partial_inplace */
548 0, /* src_mask */
549 0xffffffff, /* dst_mask */
550 FALSE), /* pcrel_offset */
551
552 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
553 FIXME: R_PPC64_PLTREL32 not supported. */
554 HOWTO (R_PPC64_PLTREL32, /* type */
555 0, /* rightshift */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
557 32, /* bitsize */
558 TRUE, /* pc_relative */
559 0, /* bitpos */
560 complain_overflow_signed, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_PPC64_PLTREL32", /* name */
563 FALSE, /* partial_inplace */
564 0, /* src_mask */
565 0xffffffff, /* dst_mask */
566 TRUE), /* pcrel_offset */
567
568 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
569 the symbol. */
570 HOWTO (R_PPC64_PLT16_LO, /* type */
571 0, /* rightshift */
572 1, /* size (0 = byte, 1 = short, 2 = long) */
573 16, /* bitsize */
574 FALSE, /* pc_relative */
575 0, /* bitpos */
576 complain_overflow_dont, /* complain_on_overflow */
577 ppc64_elf_unhandled_reloc, /* special_function */
578 "R_PPC64_PLT16_LO", /* name */
579 FALSE, /* partial_inplace */
580 0, /* src_mask */
581 0xffff, /* dst_mask */
582 FALSE), /* pcrel_offset */
583
584 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
585 the symbol. */
586 HOWTO (R_PPC64_PLT16_HI, /* type */
587 16, /* rightshift */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
589 16, /* bitsize */
590 FALSE, /* pc_relative */
591 0, /* bitpos */
592 complain_overflow_dont, /* complain_on_overflow */
593 ppc64_elf_unhandled_reloc, /* special_function */
594 "R_PPC64_PLT16_HI", /* name */
595 FALSE, /* partial_inplace */
596 0, /* src_mask */
597 0xffff, /* dst_mask */
598 FALSE), /* pcrel_offset */
599
600 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
601 the symbol. */
602 HOWTO (R_PPC64_PLT16_HA, /* type */
603 16, /* rightshift */
604 1, /* size (0 = byte, 1 = short, 2 = long) */
605 16, /* bitsize */
606 FALSE, /* pc_relative */
607 0, /* bitpos */
608 complain_overflow_dont, /* complain_on_overflow */
609 ppc64_elf_unhandled_reloc, /* special_function */
610 "R_PPC64_PLT16_HA", /* name */
611 FALSE, /* partial_inplace */
612 0, /* src_mask */
613 0xffff, /* dst_mask */
614 FALSE), /* pcrel_offset */
615
616 /* 16-bit section relative relocation. */
617 HOWTO (R_PPC64_SECTOFF, /* type */
618 0, /* rightshift */
619 1, /* size (0 = byte, 1 = short, 2 = long) */
620 16, /* bitsize */
621 FALSE, /* pc_relative */
622 0, /* bitpos */
623 complain_overflow_bitfield, /* complain_on_overflow */
624 ppc64_elf_sectoff_reloc, /* special_function */
625 "R_PPC64_SECTOFF", /* name */
626 FALSE, /* partial_inplace */
627 0, /* src_mask */
628 0xffff, /* dst_mask */
629 FALSE), /* pcrel_offset */
630
631 /* Like R_PPC64_SECTOFF, but no overflow warning. */
632 HOWTO (R_PPC64_SECTOFF_LO, /* type */
633 0, /* rightshift */
634 1, /* size (0 = byte, 1 = short, 2 = long) */
635 16, /* bitsize */
636 FALSE, /* pc_relative */
637 0, /* bitpos */
638 complain_overflow_dont, /* complain_on_overflow */
639 ppc64_elf_sectoff_reloc, /* special_function */
640 "R_PPC64_SECTOFF_LO", /* name */
641 FALSE, /* partial_inplace */
642 0, /* src_mask */
643 0xffff, /* dst_mask */
644 FALSE), /* pcrel_offset */
645
646 /* 16-bit upper half section relative relocation. */
647 HOWTO (R_PPC64_SECTOFF_HI, /* type */
648 16, /* rightshift */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
650 16, /* bitsize */
651 FALSE, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_dont, /* complain_on_overflow */
654 ppc64_elf_sectoff_reloc, /* special_function */
655 "R_PPC64_SECTOFF_HI", /* name */
656 FALSE, /* partial_inplace */
657 0, /* src_mask */
658 0xffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
660
661 /* 16-bit upper half adjusted section relative relocation. */
662 HOWTO (R_PPC64_SECTOFF_HA, /* type */
663 16, /* rightshift */
664 1, /* size (0 = byte, 1 = short, 2 = long) */
665 16, /* bitsize */
666 FALSE, /* pc_relative */
667 0, /* bitpos */
668 complain_overflow_dont, /* complain_on_overflow */
669 ppc64_elf_sectoff_ha_reloc, /* special_function */
670 "R_PPC64_SECTOFF_HA", /* name */
671 FALSE, /* partial_inplace */
672 0, /* src_mask */
673 0xffff, /* dst_mask */
674 FALSE), /* pcrel_offset */
675
676 /* Like R_PPC64_REL24 without touching the two least significant bits. */
677 HOWTO (R_PPC64_REL30, /* type */
678 2, /* rightshift */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
680 30, /* bitsize */
681 TRUE, /* pc_relative */
682 0, /* bitpos */
683 complain_overflow_dont, /* complain_on_overflow */
684 bfd_elf_generic_reloc, /* special_function */
685 "R_PPC64_REL30", /* name */
686 FALSE, /* partial_inplace */
687 0, /* src_mask */
688 0xfffffffc, /* dst_mask */
689 TRUE), /* pcrel_offset */
690
691 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
692
693 /* A standard 64-bit relocation. */
694 HOWTO (R_PPC64_ADDR64, /* type */
695 0, /* rightshift */
696 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
697 64, /* bitsize */
698 FALSE, /* pc_relative */
699 0, /* bitpos */
700 complain_overflow_dont, /* complain_on_overflow */
701 bfd_elf_generic_reloc, /* special_function */
702 "R_PPC64_ADDR64", /* name */
703 FALSE, /* partial_inplace */
704 0, /* src_mask */
705 ONES (64), /* dst_mask */
706 FALSE), /* pcrel_offset */
707
708 /* The bits 32-47 of an address. */
709 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
710 32, /* rightshift */
711 1, /* size (0 = byte, 1 = short, 2 = long) */
712 16, /* bitsize */
713 FALSE, /* pc_relative */
714 0, /* bitpos */
715 complain_overflow_dont, /* complain_on_overflow */
716 bfd_elf_generic_reloc, /* special_function */
717 "R_PPC64_ADDR16_HIGHER", /* name */
718 FALSE, /* partial_inplace */
719 0, /* src_mask */
720 0xffff, /* dst_mask */
721 FALSE), /* pcrel_offset */
722
723 /* The bits 32-47 of an address, plus 1 if the contents of the low
724 16 bits, treated as a signed number, is negative. */
725 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
726 32, /* rightshift */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
728 16, /* bitsize */
729 FALSE, /* pc_relative */
730 0, /* bitpos */
731 complain_overflow_dont, /* complain_on_overflow */
732 ppc64_elf_ha_reloc, /* special_function */
733 "R_PPC64_ADDR16_HIGHERA", /* name */
734 FALSE, /* partial_inplace */
735 0, /* src_mask */
736 0xffff, /* dst_mask */
737 FALSE), /* pcrel_offset */
738
739 /* The bits 48-63 of an address. */
740 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
741 48, /* rightshift */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
743 16, /* bitsize */
744 FALSE, /* pc_relative */
745 0, /* bitpos */
746 complain_overflow_dont, /* complain_on_overflow */
747 bfd_elf_generic_reloc, /* special_function */
748 "R_PPC64_ADDR16_HIGHEST", /* name */
749 FALSE, /* partial_inplace */
750 0, /* src_mask */
751 0xffff, /* dst_mask */
752 FALSE), /* pcrel_offset */
753
754 /* The bits 48-63 of an address, plus 1 if the contents of the low
755 16 bits, treated as a signed number, is negative. */
756 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
757 48, /* rightshift */
758 1, /* size (0 = byte, 1 = short, 2 = long) */
759 16, /* bitsize */
760 FALSE, /* pc_relative */
761 0, /* bitpos */
762 complain_overflow_dont, /* complain_on_overflow */
763 ppc64_elf_ha_reloc, /* special_function */
764 "R_PPC64_ADDR16_HIGHESTA", /* name */
765 FALSE, /* partial_inplace */
766 0, /* src_mask */
767 0xffff, /* dst_mask */
768 FALSE), /* pcrel_offset */
769
770 /* Like ADDR64, but may be unaligned. */
771 HOWTO (R_PPC64_UADDR64, /* type */
772 0, /* rightshift */
773 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
774 64, /* bitsize */
775 FALSE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_dont, /* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_PPC64_UADDR64", /* name */
780 FALSE, /* partial_inplace */
781 0, /* src_mask */
782 ONES (64), /* dst_mask */
783 FALSE), /* pcrel_offset */
784
785 /* 64-bit relative relocation. */
786 HOWTO (R_PPC64_REL64, /* type */
787 0, /* rightshift */
788 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
789 64, /* bitsize */
790 TRUE, /* pc_relative */
791 0, /* bitpos */
792 complain_overflow_dont, /* complain_on_overflow */
793 bfd_elf_generic_reloc, /* special_function */
794 "R_PPC64_REL64", /* name */
795 FALSE, /* partial_inplace */
796 0, /* src_mask */
797 ONES (64), /* dst_mask */
798 TRUE), /* pcrel_offset */
799
800 /* 64-bit relocation to the symbol's procedure linkage table. */
801 HOWTO (R_PPC64_PLT64, /* type */
802 0, /* rightshift */
803 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
804 64, /* bitsize */
805 FALSE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc64_elf_unhandled_reloc, /* special_function */
809 "R_PPC64_PLT64", /* name */
810 FALSE, /* partial_inplace */
811 0, /* src_mask */
812 ONES (64), /* dst_mask */
813 FALSE), /* pcrel_offset */
814
815 /* 64-bit PC relative relocation to the symbol's procedure linkage
816 table. */
817 /* FIXME: R_PPC64_PLTREL64 not supported. */
818 HOWTO (R_PPC64_PLTREL64, /* type */
819 0, /* rightshift */
820 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
821 64, /* bitsize */
822 TRUE, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 ppc64_elf_unhandled_reloc, /* special_function */
826 "R_PPC64_PLTREL64", /* name */
827 FALSE, /* partial_inplace */
828 0, /* src_mask */
829 ONES (64), /* dst_mask */
830 TRUE), /* pcrel_offset */
831
832 /* 16 bit TOC-relative relocation. */
833
834 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
835 HOWTO (R_PPC64_TOC16, /* type */
836 0, /* rightshift */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
838 16, /* bitsize */
839 FALSE, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_signed, /* complain_on_overflow */
842 ppc64_elf_toc_reloc, /* special_function */
843 "R_PPC64_TOC16", /* name */
844 FALSE, /* partial_inplace */
845 0, /* src_mask */
846 0xffff, /* dst_mask */
847 FALSE), /* pcrel_offset */
848
849 /* 16 bit TOC-relative relocation without overflow. */
850
851 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
852 HOWTO (R_PPC64_TOC16_LO, /* type */
853 0, /* rightshift */
854 1, /* size (0 = byte, 1 = short, 2 = long) */
855 16, /* bitsize */
856 FALSE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 ppc64_elf_toc_reloc, /* special_function */
860 "R_PPC64_TOC16_LO", /* name */
861 FALSE, /* partial_inplace */
862 0, /* src_mask */
863 0xffff, /* dst_mask */
864 FALSE), /* pcrel_offset */
865
866 /* 16 bit TOC-relative relocation, high 16 bits. */
867
868 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
869 HOWTO (R_PPC64_TOC16_HI, /* type */
870 16, /* rightshift */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
872 16, /* bitsize */
873 FALSE, /* pc_relative */
874 0, /* bitpos */
875 complain_overflow_dont, /* complain_on_overflow */
876 ppc64_elf_toc_reloc, /* special_function */
877 "R_PPC64_TOC16_HI", /* name */
878 FALSE, /* partial_inplace */
879 0, /* src_mask */
880 0xffff, /* dst_mask */
881 FALSE), /* pcrel_offset */
882
883 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
884 contents of the low 16 bits, treated as a signed number, is
885 negative. */
886
887 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
888 HOWTO (R_PPC64_TOC16_HA, /* type */
889 16, /* rightshift */
890 1, /* size (0 = byte, 1 = short, 2 = long) */
891 16, /* bitsize */
892 FALSE, /* pc_relative */
893 0, /* bitpos */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc64_elf_toc_ha_reloc, /* special_function */
896 "R_PPC64_TOC16_HA", /* name */
897 FALSE, /* partial_inplace */
898 0, /* src_mask */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
901
902 /* 64-bit relocation; insert value of TOC base (.TOC.). */
903
904 /* R_PPC64_TOC 51 doubleword64 .TOC. */
905 HOWTO (R_PPC64_TOC, /* type */
906 0, /* rightshift */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 64, /* bitsize */
909 FALSE, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_bitfield, /* complain_on_overflow */
912 ppc64_elf_toc64_reloc, /* special_function */
913 "R_PPC64_TOC", /* name */
914 FALSE, /* partial_inplace */
915 0, /* src_mask */
916 ONES (64), /* dst_mask */
917 FALSE), /* pcrel_offset */
918
919 /* Like R_PPC64_GOT16, but also informs the link editor that the
920 value to relocate may (!) refer to a PLT entry which the link
921 editor (a) may replace with the symbol value. If the link editor
922 is unable to fully resolve the symbol, it may (b) create a PLT
923 entry and store the address to the new PLT entry in the GOT.
924 This permits lazy resolution of function symbols at run time.
925 The link editor may also skip all of this and just (c) emit a
926 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
927 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
928 HOWTO (R_PPC64_PLTGOT16, /* type */
929 0, /* rightshift */
930 1, /* size (0 = byte, 1 = short, 2 = long) */
931 16, /* bitsize */
932 FALSE, /* pc_relative */
933 0, /* bitpos */
934 complain_overflow_signed, /* complain_on_overflow */
935 ppc64_elf_unhandled_reloc, /* special_function */
936 "R_PPC64_PLTGOT16", /* name */
937 FALSE, /* partial_inplace */
938 0, /* src_mask */
939 0xffff, /* dst_mask */
940 FALSE), /* pcrel_offset */
941
942 /* Like R_PPC64_PLTGOT16, but without overflow. */
943 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
944 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
945 0, /* rightshift */
946 1, /* size (0 = byte, 1 = short, 2 = long) */
947 16, /* bitsize */
948 FALSE, /* pc_relative */
949 0, /* bitpos */
950 complain_overflow_dont, /* complain_on_overflow */
951 ppc64_elf_unhandled_reloc, /* special_function */
952 "R_PPC64_PLTGOT16_LO", /* name */
953 FALSE, /* partial_inplace */
954 0, /* src_mask */
955 0xffff, /* dst_mask */
956 FALSE), /* pcrel_offset */
957
958 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
959 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
960 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
961 16, /* rightshift */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
963 16, /* bitsize */
964 FALSE, /* pc_relative */
965 0, /* bitpos */
966 complain_overflow_dont, /* complain_on_overflow */
967 ppc64_elf_unhandled_reloc, /* special_function */
968 "R_PPC64_PLTGOT16_HI", /* name */
969 FALSE, /* partial_inplace */
970 0, /* src_mask */
971 0xffff, /* dst_mask */
972 FALSE), /* pcrel_offset */
973
974 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
975 1 if the contents of the low 16 bits, treated as a signed number,
976 is negative. */
977 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
978 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
979 16, /* rightshift */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
981 16, /* bitsize */
982 FALSE, /* pc_relative */
983 0, /* bitpos */
984 complain_overflow_dont,/* complain_on_overflow */
985 ppc64_elf_unhandled_reloc, /* special_function */
986 "R_PPC64_PLTGOT16_HA", /* name */
987 FALSE, /* partial_inplace */
988 0, /* src_mask */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
991
992 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
993 HOWTO (R_PPC64_ADDR16_DS, /* type */
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
997 FALSE, /* pc_relative */
998 0, /* bitpos */
999 complain_overflow_bitfield, /* complain_on_overflow */
1000 bfd_elf_generic_reloc, /* special_function */
1001 "R_PPC64_ADDR16_DS", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xfffc, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1008 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1009 0, /* rightshift */
1010 1, /* size (0 = byte, 1 = short, 2 = long) */
1011 16, /* bitsize */
1012 FALSE, /* pc_relative */
1013 0, /* bitpos */
1014 complain_overflow_dont,/* complain_on_overflow */
1015 bfd_elf_generic_reloc, /* special_function */
1016 "R_PPC64_ADDR16_LO_DS",/* name */
1017 FALSE, /* partial_inplace */
1018 0, /* src_mask */
1019 0xfffc, /* dst_mask */
1020 FALSE), /* pcrel_offset */
1021
1022 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1023 HOWTO (R_PPC64_GOT16_DS, /* type */
1024 0, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 16, /* bitsize */
1027 FALSE, /* pc_relative */
1028 0, /* bitpos */
1029 complain_overflow_signed, /* complain_on_overflow */
1030 ppc64_elf_unhandled_reloc, /* special_function */
1031 "R_PPC64_GOT16_DS", /* name */
1032 FALSE, /* partial_inplace */
1033 0, /* src_mask */
1034 0xfffc, /* dst_mask */
1035 FALSE), /* pcrel_offset */
1036
1037 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1038 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1039 0, /* rightshift */
1040 1, /* size (0 = byte, 1 = short, 2 = long) */
1041 16, /* bitsize */
1042 FALSE, /* pc_relative */
1043 0, /* bitpos */
1044 complain_overflow_dont, /* complain_on_overflow */
1045 ppc64_elf_unhandled_reloc, /* special_function */
1046 "R_PPC64_GOT16_LO_DS", /* name */
1047 FALSE, /* partial_inplace */
1048 0, /* src_mask */
1049 0xfffc, /* dst_mask */
1050 FALSE), /* pcrel_offset */
1051
1052 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1053 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1054 0, /* rightshift */
1055 1, /* size (0 = byte, 1 = short, 2 = long) */
1056 16, /* bitsize */
1057 FALSE, /* pc_relative */
1058 0, /* bitpos */
1059 complain_overflow_dont, /* complain_on_overflow */
1060 ppc64_elf_unhandled_reloc, /* special_function */
1061 "R_PPC64_PLT16_LO_DS", /* name */
1062 FALSE, /* partial_inplace */
1063 0, /* src_mask */
1064 0xfffc, /* dst_mask */
1065 FALSE), /* pcrel_offset */
1066
1067 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1068 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1069 0, /* rightshift */
1070 1, /* size (0 = byte, 1 = short, 2 = long) */
1071 16, /* bitsize */
1072 FALSE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_bitfield, /* complain_on_overflow */
1075 ppc64_elf_sectoff_reloc, /* special_function */
1076 "R_PPC64_SECTOFF_DS", /* name */
1077 FALSE, /* partial_inplace */
1078 0, /* src_mask */
1079 0xfffc, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1081
1082 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1083 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1084 0, /* rightshift */
1085 1, /* size (0 = byte, 1 = short, 2 = long) */
1086 16, /* bitsize */
1087 FALSE, /* pc_relative */
1088 0, /* bitpos */
1089 complain_overflow_dont, /* complain_on_overflow */
1090 ppc64_elf_sectoff_reloc, /* special_function */
1091 "R_PPC64_SECTOFF_LO_DS",/* name */
1092 FALSE, /* partial_inplace */
1093 0, /* src_mask */
1094 0xfffc, /* dst_mask */
1095 FALSE), /* pcrel_offset */
1096
1097 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1098 HOWTO (R_PPC64_TOC16_DS, /* type */
1099 0, /* rightshift */
1100 1, /* size (0 = byte, 1 = short, 2 = long) */
1101 16, /* bitsize */
1102 FALSE, /* pc_relative */
1103 0, /* bitpos */
1104 complain_overflow_signed, /* complain_on_overflow */
1105 ppc64_elf_toc_reloc, /* special_function */
1106 "R_PPC64_TOC16_DS", /* name */
1107 FALSE, /* partial_inplace */
1108 0, /* src_mask */
1109 0xfffc, /* dst_mask */
1110 FALSE), /* pcrel_offset */
1111
1112 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1113 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1114 0, /* rightshift */
1115 1, /* size (0 = byte, 1 = short, 2 = long) */
1116 16, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 ppc64_elf_toc_reloc, /* special_function */
1121 "R_PPC64_TOC16_LO_DS", /* name */
1122 FALSE, /* partial_inplace */
1123 0, /* src_mask */
1124 0xfffc, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1126
1127 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1128 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1129 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1130 0, /* rightshift */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 16, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_signed, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_PLTGOT16_DS", /* name */
1138 FALSE, /* partial_inplace */
1139 0, /* src_mask */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1142
1143 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1144 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1145 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1146 0, /* rightshift */
1147 1, /* size (0 = byte, 1 = short, 2 = long) */
1148 16, /* bitsize */
1149 FALSE, /* pc_relative */
1150 0, /* bitpos */
1151 complain_overflow_dont, /* complain_on_overflow */
1152 ppc64_elf_unhandled_reloc, /* special_function */
1153 "R_PPC64_PLTGOT16_LO_DS",/* name */
1154 FALSE, /* partial_inplace */
1155 0, /* src_mask */
1156 0xfffc, /* dst_mask */
1157 FALSE), /* pcrel_offset */
1158
1159 /* Marker reloc for TLS. */
1160 HOWTO (R_PPC64_TLS,
1161 0, /* rightshift */
1162 2, /* size (0 = byte, 1 = short, 2 = long) */
1163 32, /* bitsize */
1164 FALSE, /* pc_relative */
1165 0, /* bitpos */
1166 complain_overflow_dont, /* complain_on_overflow */
1167 bfd_elf_generic_reloc, /* special_function */
1168 "R_PPC64_TLS", /* name */
1169 FALSE, /* partial_inplace */
1170 0, /* src_mask */
1171 0, /* dst_mask */
1172 FALSE), /* pcrel_offset */
1173
1174 /* Computes the load module index of the load module that contains the
1175 definition of its TLS sym. */
1176 HOWTO (R_PPC64_DTPMOD64,
1177 0, /* rightshift */
1178 4, /* size (0 = byte, 1 = short, 2 = long) */
1179 64, /* bitsize */
1180 FALSE, /* pc_relative */
1181 0, /* bitpos */
1182 complain_overflow_dont, /* complain_on_overflow */
1183 ppc64_elf_unhandled_reloc, /* special_function */
1184 "R_PPC64_DTPMOD64", /* name */
1185 FALSE, /* partial_inplace */
1186 0, /* src_mask */
1187 ONES (64), /* dst_mask */
1188 FALSE), /* pcrel_offset */
1189
1190 /* Computes a dtv-relative displacement, the difference between the value
1191 of sym+add and the base address of the thread-local storage block that
1192 contains the definition of sym, minus 0x8000. */
1193 HOWTO (R_PPC64_DTPREL64,
1194 0, /* rightshift */
1195 4, /* size (0 = byte, 1 = short, 2 = long) */
1196 64, /* bitsize */
1197 FALSE, /* pc_relative */
1198 0, /* bitpos */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 ppc64_elf_unhandled_reloc, /* special_function */
1201 "R_PPC64_DTPREL64", /* name */
1202 FALSE, /* partial_inplace */
1203 0, /* src_mask */
1204 ONES (64), /* dst_mask */
1205 FALSE), /* pcrel_offset */
1206
1207 /* A 16 bit dtprel reloc. */
1208 HOWTO (R_PPC64_DTPREL16,
1209 0, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 16, /* bitsize */
1212 FALSE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 ppc64_elf_unhandled_reloc, /* special_function */
1216 "R_PPC64_DTPREL16", /* name */
1217 FALSE, /* partial_inplace */
1218 0, /* src_mask */
1219 0xffff, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1221
1222 /* Like DTPREL16, but no overflow. */
1223 HOWTO (R_PPC64_DTPREL16_LO,
1224 0, /* rightshift */
1225 1, /* size (0 = byte, 1 = short, 2 = long) */
1226 16, /* bitsize */
1227 FALSE, /* pc_relative */
1228 0, /* bitpos */
1229 complain_overflow_dont, /* complain_on_overflow */
1230 ppc64_elf_unhandled_reloc, /* special_function */
1231 "R_PPC64_DTPREL16_LO", /* name */
1232 FALSE, /* partial_inplace */
1233 0, /* src_mask */
1234 0xffff, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1236
1237 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1238 HOWTO (R_PPC64_DTPREL16_HI,
1239 16, /* rightshift */
1240 1, /* size (0 = byte, 1 = short, 2 = long) */
1241 16, /* bitsize */
1242 FALSE, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 ppc64_elf_unhandled_reloc, /* special_function */
1246 "R_PPC64_DTPREL16_HI", /* name */
1247 FALSE, /* partial_inplace */
1248 0, /* src_mask */
1249 0xffff, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1253 HOWTO (R_PPC64_DTPREL16_HA,
1254 16, /* rightshift */
1255 1, /* size (0 = byte, 1 = short, 2 = long) */
1256 16, /* bitsize */
1257 FALSE, /* pc_relative */
1258 0, /* bitpos */
1259 complain_overflow_dont, /* complain_on_overflow */
1260 ppc64_elf_unhandled_reloc, /* special_function */
1261 "R_PPC64_DTPREL16_HA", /* name */
1262 FALSE, /* partial_inplace */
1263 0, /* src_mask */
1264 0xffff, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1266
1267 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1268 HOWTO (R_PPC64_DTPREL16_HIGHER,
1269 32, /* rightshift */
1270 1, /* size (0 = byte, 1 = short, 2 = long) */
1271 16, /* bitsize */
1272 FALSE, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 ppc64_elf_unhandled_reloc, /* special_function */
1276 "R_PPC64_DTPREL16_HIGHER", /* name */
1277 FALSE, /* partial_inplace */
1278 0, /* src_mask */
1279 0xffff, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
1282 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1283 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1284 32, /* rightshift */
1285 1, /* size (0 = byte, 1 = short, 2 = long) */
1286 16, /* bitsize */
1287 FALSE, /* pc_relative */
1288 0, /* bitpos */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 ppc64_elf_unhandled_reloc, /* special_function */
1291 "R_PPC64_DTPREL16_HIGHERA", /* name */
1292 FALSE, /* partial_inplace */
1293 0, /* src_mask */
1294 0xffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1296
1297 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1298 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1299 48, /* rightshift */
1300 1, /* size (0 = byte, 1 = short, 2 = long) */
1301 16, /* bitsize */
1302 FALSE, /* pc_relative */
1303 0, /* bitpos */
1304 complain_overflow_dont, /* complain_on_overflow */
1305 ppc64_elf_unhandled_reloc, /* special_function */
1306 "R_PPC64_DTPREL16_HIGHEST", /* name */
1307 FALSE, /* partial_inplace */
1308 0, /* src_mask */
1309 0xffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1311
1312 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1313 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1314 48, /* rightshift */
1315 1, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_dont, /* complain_on_overflow */
1320 ppc64_elf_unhandled_reloc, /* special_function */
1321 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1322 FALSE, /* partial_inplace */
1323 0, /* src_mask */
1324 0xffff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* Like DTPREL16, but for insns with a DS field. */
1328 HOWTO (R_PPC64_DTPREL16_DS,
1329 0, /* rightshift */
1330 1, /* size (0 = byte, 1 = short, 2 = long) */
1331 16, /* bitsize */
1332 FALSE, /* pc_relative */
1333 0, /* bitpos */
1334 complain_overflow_signed, /* complain_on_overflow */
1335 ppc64_elf_unhandled_reloc, /* special_function */
1336 "R_PPC64_DTPREL16_DS", /* name */
1337 FALSE, /* partial_inplace */
1338 0, /* src_mask */
1339 0xfffc, /* dst_mask */
1340 FALSE), /* pcrel_offset */
1341
1342 /* Like DTPREL16_DS, but no overflow. */
1343 HOWTO (R_PPC64_DTPREL16_LO_DS,
1344 0, /* rightshift */
1345 1, /* size (0 = byte, 1 = short, 2 = long) */
1346 16, /* bitsize */
1347 FALSE, /* pc_relative */
1348 0, /* bitpos */
1349 complain_overflow_dont, /* complain_on_overflow */
1350 ppc64_elf_unhandled_reloc, /* special_function */
1351 "R_PPC64_DTPREL16_LO_DS", /* name */
1352 FALSE, /* partial_inplace */
1353 0, /* src_mask */
1354 0xfffc, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1356
1357 /* Computes a tp-relative displacement, the difference between the value of
1358 sym+add and the value of the thread pointer (r13). */
1359 HOWTO (R_PPC64_TPREL64,
1360 0, /* rightshift */
1361 4, /* size (0 = byte, 1 = short, 2 = long) */
1362 64, /* bitsize */
1363 FALSE, /* pc_relative */
1364 0, /* bitpos */
1365 complain_overflow_dont, /* complain_on_overflow */
1366 ppc64_elf_unhandled_reloc, /* special_function */
1367 "R_PPC64_TPREL64", /* name */
1368 FALSE, /* partial_inplace */
1369 0, /* src_mask */
1370 ONES (64), /* dst_mask */
1371 FALSE), /* pcrel_offset */
1372
1373 /* A 16 bit tprel reloc. */
1374 HOWTO (R_PPC64_TPREL16,
1375 0, /* rightshift */
1376 1, /* size (0 = byte, 1 = short, 2 = long) */
1377 16, /* bitsize */
1378 FALSE, /* pc_relative */
1379 0, /* bitpos */
1380 complain_overflow_signed, /* complain_on_overflow */
1381 ppc64_elf_unhandled_reloc, /* special_function */
1382 "R_PPC64_TPREL16", /* name */
1383 FALSE, /* partial_inplace */
1384 0, /* src_mask */
1385 0xffff, /* dst_mask */
1386 FALSE), /* pcrel_offset */
1387
1388 /* Like TPREL16, but no overflow. */
1389 HOWTO (R_PPC64_TPREL16_LO,
1390 0, /* rightshift */
1391 1, /* size (0 = byte, 1 = short, 2 = long) */
1392 16, /* bitsize */
1393 FALSE, /* pc_relative */
1394 0, /* bitpos */
1395 complain_overflow_dont, /* complain_on_overflow */
1396 ppc64_elf_unhandled_reloc, /* special_function */
1397 "R_PPC64_TPREL16_LO", /* name */
1398 FALSE, /* partial_inplace */
1399 0, /* src_mask */
1400 0xffff, /* dst_mask */
1401 FALSE), /* pcrel_offset */
1402
1403 /* Like TPREL16_LO, but next higher group of 16 bits. */
1404 HOWTO (R_PPC64_TPREL16_HI,
1405 16, /* rightshift */
1406 1, /* size (0 = byte, 1 = short, 2 = long) */
1407 16, /* bitsize */
1408 FALSE, /* pc_relative */
1409 0, /* bitpos */
1410 complain_overflow_dont, /* complain_on_overflow */
1411 ppc64_elf_unhandled_reloc, /* special_function */
1412 "R_PPC64_TPREL16_HI", /* name */
1413 FALSE, /* partial_inplace */
1414 0, /* src_mask */
1415 0xffff, /* dst_mask */
1416 FALSE), /* pcrel_offset */
1417
1418 /* Like TPREL16_HI, but adjust for low 16 bits. */
1419 HOWTO (R_PPC64_TPREL16_HA,
1420 16, /* rightshift */
1421 1, /* size (0 = byte, 1 = short, 2 = long) */
1422 16, /* bitsize */
1423 FALSE, /* pc_relative */
1424 0, /* bitpos */
1425 complain_overflow_dont, /* complain_on_overflow */
1426 ppc64_elf_unhandled_reloc, /* special_function */
1427 "R_PPC64_TPREL16_HA", /* name */
1428 FALSE, /* partial_inplace */
1429 0, /* src_mask */
1430 0xffff, /* dst_mask */
1431 FALSE), /* pcrel_offset */
1432
1433 /* Like TPREL16_HI, but next higher group of 16 bits. */
1434 HOWTO (R_PPC64_TPREL16_HIGHER,
1435 32, /* rightshift */
1436 1, /* size (0 = byte, 1 = short, 2 = long) */
1437 16, /* bitsize */
1438 FALSE, /* pc_relative */
1439 0, /* bitpos */
1440 complain_overflow_dont, /* complain_on_overflow */
1441 ppc64_elf_unhandled_reloc, /* special_function */
1442 "R_PPC64_TPREL16_HIGHER", /* name */
1443 FALSE, /* partial_inplace */
1444 0, /* src_mask */
1445 0xffff, /* dst_mask */
1446 FALSE), /* pcrel_offset */
1447
1448 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1449 HOWTO (R_PPC64_TPREL16_HIGHERA,
1450 32, /* rightshift */
1451 1, /* size (0 = byte, 1 = short, 2 = long) */
1452 16, /* bitsize */
1453 FALSE, /* pc_relative */
1454 0, /* bitpos */
1455 complain_overflow_dont, /* complain_on_overflow */
1456 ppc64_elf_unhandled_reloc, /* special_function */
1457 "R_PPC64_TPREL16_HIGHERA", /* name */
1458 FALSE, /* partial_inplace */
1459 0, /* src_mask */
1460 0xffff, /* dst_mask */
1461 FALSE), /* pcrel_offset */
1462
1463 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1464 HOWTO (R_PPC64_TPREL16_HIGHEST,
1465 48, /* rightshift */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1467 16, /* bitsize */
1468 FALSE, /* pc_relative */
1469 0, /* bitpos */
1470 complain_overflow_dont, /* complain_on_overflow */
1471 ppc64_elf_unhandled_reloc, /* special_function */
1472 "R_PPC64_TPREL16_HIGHEST", /* name */
1473 FALSE, /* partial_inplace */
1474 0, /* src_mask */
1475 0xffff, /* dst_mask */
1476 FALSE), /* pcrel_offset */
1477
1478 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1479 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1480 48, /* rightshift */
1481 1, /* size (0 = byte, 1 = short, 2 = long) */
1482 16, /* bitsize */
1483 FALSE, /* pc_relative */
1484 0, /* bitpos */
1485 complain_overflow_dont, /* complain_on_overflow */
1486 ppc64_elf_unhandled_reloc, /* special_function */
1487 "R_PPC64_TPREL16_HIGHESTA", /* name */
1488 FALSE, /* partial_inplace */
1489 0, /* src_mask */
1490 0xffff, /* dst_mask */
1491 FALSE), /* pcrel_offset */
1492
1493 /* Like TPREL16, but for insns with a DS field. */
1494 HOWTO (R_PPC64_TPREL16_DS,
1495 0, /* rightshift */
1496 1, /* size (0 = byte, 1 = short, 2 = long) */
1497 16, /* bitsize */
1498 FALSE, /* pc_relative */
1499 0, /* bitpos */
1500 complain_overflow_signed, /* complain_on_overflow */
1501 ppc64_elf_unhandled_reloc, /* special_function */
1502 "R_PPC64_TPREL16_DS", /* name */
1503 FALSE, /* partial_inplace */
1504 0, /* src_mask */
1505 0xfffc, /* dst_mask */
1506 FALSE), /* pcrel_offset */
1507
1508 /* Like TPREL16_DS, but no overflow. */
1509 HOWTO (R_PPC64_TPREL16_LO_DS,
1510 0, /* rightshift */
1511 1, /* size (0 = byte, 1 = short, 2 = long) */
1512 16, /* bitsize */
1513 FALSE, /* pc_relative */
1514 0, /* bitpos */
1515 complain_overflow_dont, /* complain_on_overflow */
1516 ppc64_elf_unhandled_reloc, /* special_function */
1517 "R_PPC64_TPREL16_LO_DS", /* name */
1518 FALSE, /* partial_inplace */
1519 0, /* src_mask */
1520 0xfffc, /* dst_mask */
1521 FALSE), /* pcrel_offset */
1522
1523 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1524 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1525 to the first entry relative to the TOC base (r2). */
1526 HOWTO (R_PPC64_GOT_TLSGD16,
1527 0, /* rightshift */
1528 1, /* size (0 = byte, 1 = short, 2 = long) */
1529 16, /* bitsize */
1530 FALSE, /* pc_relative */
1531 0, /* bitpos */
1532 complain_overflow_signed, /* complain_on_overflow */
1533 ppc64_elf_unhandled_reloc, /* special_function */
1534 "R_PPC64_GOT_TLSGD16", /* name */
1535 FALSE, /* partial_inplace */
1536 0, /* src_mask */
1537 0xffff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539
1540 /* Like GOT_TLSGD16, but no overflow. */
1541 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1542 0, /* rightshift */
1543 1, /* size (0 = byte, 1 = short, 2 = long) */
1544 16, /* bitsize */
1545 FALSE, /* pc_relative */
1546 0, /* bitpos */
1547 complain_overflow_dont, /* complain_on_overflow */
1548 ppc64_elf_unhandled_reloc, /* special_function */
1549 "R_PPC64_GOT_TLSGD16_LO", /* name */
1550 FALSE, /* partial_inplace */
1551 0, /* src_mask */
1552 0xffff, /* dst_mask */
1553 FALSE), /* pcrel_offset */
1554
1555 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1556 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1557 16, /* rightshift */
1558 1, /* size (0 = byte, 1 = short, 2 = long) */
1559 16, /* bitsize */
1560 FALSE, /* pc_relative */
1561 0, /* bitpos */
1562 complain_overflow_dont, /* complain_on_overflow */
1563 ppc64_elf_unhandled_reloc, /* special_function */
1564 "R_PPC64_GOT_TLSGD16_HI", /* name */
1565 FALSE, /* partial_inplace */
1566 0, /* src_mask */
1567 0xffff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1569
1570 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1571 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1572 16, /* rightshift */
1573 1, /* size (0 = byte, 1 = short, 2 = long) */
1574 16, /* bitsize */
1575 FALSE, /* pc_relative */
1576 0, /* bitpos */
1577 complain_overflow_dont, /* complain_on_overflow */
1578 ppc64_elf_unhandled_reloc, /* special_function */
1579 "R_PPC64_GOT_TLSGD16_HA", /* name */
1580 FALSE, /* partial_inplace */
1581 0, /* src_mask */
1582 0xffff, /* dst_mask */
1583 FALSE), /* pcrel_offset */
1584
1585 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1586 with values (sym+add)@dtpmod and zero, and computes the offset to the
1587 first entry relative to the TOC base (r2). */
1588 HOWTO (R_PPC64_GOT_TLSLD16,
1589 0, /* rightshift */
1590 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 16, /* bitsize */
1592 FALSE, /* pc_relative */
1593 0, /* bitpos */
1594 complain_overflow_signed, /* complain_on_overflow */
1595 ppc64_elf_unhandled_reloc, /* special_function */
1596 "R_PPC64_GOT_TLSLD16", /* name */
1597 FALSE, /* partial_inplace */
1598 0, /* src_mask */
1599 0xffff, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1601
1602 /* Like GOT_TLSLD16, but no overflow. */
1603 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1604 0, /* rightshift */
1605 1, /* size (0 = byte, 1 = short, 2 = long) */
1606 16, /* bitsize */
1607 FALSE, /* pc_relative */
1608 0, /* bitpos */
1609 complain_overflow_dont, /* complain_on_overflow */
1610 ppc64_elf_unhandled_reloc, /* special_function */
1611 "R_PPC64_GOT_TLSLD16_LO", /* name */
1612 FALSE, /* partial_inplace */
1613 0, /* src_mask */
1614 0xffff, /* dst_mask */
1615 FALSE), /* pcrel_offset */
1616
1617 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1618 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1619 16, /* rightshift */
1620 1, /* size (0 = byte, 1 = short, 2 = long) */
1621 16, /* bitsize */
1622 FALSE, /* pc_relative */
1623 0, /* bitpos */
1624 complain_overflow_dont, /* complain_on_overflow */
1625 ppc64_elf_unhandled_reloc, /* special_function */
1626 "R_PPC64_GOT_TLSLD16_HI", /* name */
1627 FALSE, /* partial_inplace */
1628 0, /* src_mask */
1629 0xffff, /* dst_mask */
1630 FALSE), /* pcrel_offset */
1631
1632 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1633 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1634 16, /* rightshift */
1635 1, /* size (0 = byte, 1 = short, 2 = long) */
1636 16, /* bitsize */
1637 FALSE, /* pc_relative */
1638 0, /* bitpos */
1639 complain_overflow_dont, /* complain_on_overflow */
1640 ppc64_elf_unhandled_reloc, /* special_function */
1641 "R_PPC64_GOT_TLSLD16_HA", /* name */
1642 FALSE, /* partial_inplace */
1643 0, /* src_mask */
1644 0xffff, /* dst_mask */
1645 FALSE), /* pcrel_offset */
1646
1647 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1648 the offset to the entry relative to the TOC base (r2). */
1649 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1650 0, /* rightshift */
1651 1, /* size (0 = byte, 1 = short, 2 = long) */
1652 16, /* bitsize */
1653 FALSE, /* pc_relative */
1654 0, /* bitpos */
1655 complain_overflow_signed, /* complain_on_overflow */
1656 ppc64_elf_unhandled_reloc, /* special_function */
1657 "R_PPC64_GOT_DTPREL16_DS", /* name */
1658 FALSE, /* partial_inplace */
1659 0, /* src_mask */
1660 0xfffc, /* dst_mask */
1661 FALSE), /* pcrel_offset */
1662
1663 /* Like GOT_DTPREL16_DS, but no overflow. */
1664 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1665 0, /* rightshift */
1666 1, /* size (0 = byte, 1 = short, 2 = long) */
1667 16, /* bitsize */
1668 FALSE, /* pc_relative */
1669 0, /* bitpos */
1670 complain_overflow_dont, /* complain_on_overflow */
1671 ppc64_elf_unhandled_reloc, /* special_function */
1672 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1673 FALSE, /* partial_inplace */
1674 0, /* src_mask */
1675 0xfffc, /* dst_mask */
1676 FALSE), /* pcrel_offset */
1677
1678 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1679 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1680 16, /* rightshift */
1681 1, /* size (0 = byte, 1 = short, 2 = long) */
1682 16, /* bitsize */
1683 FALSE, /* pc_relative */
1684 0, /* bitpos */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 ppc64_elf_unhandled_reloc, /* special_function */
1687 "R_PPC64_GOT_DTPREL16_HI", /* name */
1688 FALSE, /* partial_inplace */
1689 0, /* src_mask */
1690 0xffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1692
1693 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1694 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1695 16, /* rightshift */
1696 1, /* size (0 = byte, 1 = short, 2 = long) */
1697 16, /* bitsize */
1698 FALSE, /* pc_relative */
1699 0, /* bitpos */
1700 complain_overflow_dont, /* complain_on_overflow */
1701 ppc64_elf_unhandled_reloc, /* special_function */
1702 "R_PPC64_GOT_DTPREL16_HA", /* name */
1703 FALSE, /* partial_inplace */
1704 0, /* src_mask */
1705 0xffff, /* dst_mask */
1706 FALSE), /* pcrel_offset */
1707
1708 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1709 offset to the entry relative to the TOC base (r2). */
1710 HOWTO (R_PPC64_GOT_TPREL16_DS,
1711 0, /* rightshift */
1712 1, /* size (0 = byte, 1 = short, 2 = long) */
1713 16, /* bitsize */
1714 FALSE, /* pc_relative */
1715 0, /* bitpos */
1716 complain_overflow_signed, /* complain_on_overflow */
1717 ppc64_elf_unhandled_reloc, /* special_function */
1718 "R_PPC64_GOT_TPREL16_DS", /* name */
1719 FALSE, /* partial_inplace */
1720 0, /* src_mask */
1721 0xffff, /* dst_mask */
1722 FALSE), /* pcrel_offset */
1723
1724 /* Like GOT_TPREL16_DS, but no overflow. */
1725 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1726 0, /* rightshift */
1727 1, /* size (0 = byte, 1 = short, 2 = long) */
1728 16, /* bitsize */
1729 FALSE, /* pc_relative */
1730 0, /* bitpos */
1731 complain_overflow_dont, /* complain_on_overflow */
1732 ppc64_elf_unhandled_reloc, /* special_function */
1733 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1734 FALSE, /* partial_inplace */
1735 0, /* src_mask */
1736 0xffff, /* dst_mask */
1737 FALSE), /* pcrel_offset */
1738
1739 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1740 HOWTO (R_PPC64_GOT_TPREL16_HI,
1741 16, /* rightshift */
1742 1, /* size (0 = byte, 1 = short, 2 = long) */
1743 16, /* bitsize */
1744 FALSE, /* pc_relative */
1745 0, /* bitpos */
1746 complain_overflow_dont, /* complain_on_overflow */
1747 ppc64_elf_unhandled_reloc, /* special_function */
1748 "R_PPC64_GOT_TPREL16_HI", /* name */
1749 FALSE, /* partial_inplace */
1750 0, /* src_mask */
1751 0xffff, /* dst_mask */
1752 FALSE), /* pcrel_offset */
1753
1754 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1755 HOWTO (R_PPC64_GOT_TPREL16_HA,
1756 16, /* rightshift */
1757 1, /* size (0 = byte, 1 = short, 2 = long) */
1758 16, /* bitsize */
1759 FALSE, /* pc_relative */
1760 0, /* bitpos */
1761 complain_overflow_dont, /* complain_on_overflow */
1762 ppc64_elf_unhandled_reloc, /* special_function */
1763 "R_PPC64_GOT_TPREL16_HA", /* name */
1764 FALSE, /* partial_inplace */
1765 0, /* src_mask */
1766 0xffff, /* dst_mask */
1767 FALSE), /* pcrel_offset */
1768
1769 /* GNU extension to record C++ vtable hierarchy. */
1770 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1771 0, /* rightshift */
1772 0, /* size (0 = byte, 1 = short, 2 = long) */
1773 0, /* bitsize */
1774 FALSE, /* pc_relative */
1775 0, /* bitpos */
1776 complain_overflow_dont, /* complain_on_overflow */
1777 NULL, /* special_function */
1778 "R_PPC64_GNU_VTINHERIT", /* name */
1779 FALSE, /* partial_inplace */
1780 0, /* src_mask */
1781 0, /* dst_mask */
1782 FALSE), /* pcrel_offset */
1783
1784 /* GNU extension to record C++ vtable member usage. */
1785 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1786 0, /* rightshift */
1787 0, /* size (0 = byte, 1 = short, 2 = long) */
1788 0, /* bitsize */
1789 FALSE, /* pc_relative */
1790 0, /* bitpos */
1791 complain_overflow_dont, /* complain_on_overflow */
1792 NULL, /* special_function */
1793 "R_PPC64_GNU_VTENTRY", /* name */
1794 FALSE, /* partial_inplace */
1795 0, /* src_mask */
1796 0, /* dst_mask */
1797 FALSE), /* pcrel_offset */
1798 };
1799
1800 \f
1801 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1802 be done. */
1803
1804 static void
1805 ppc_howto_init ()
1806 {
1807 unsigned int i, type;
1808
1809 for (i = 0;
1810 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1811 i++)
1812 {
1813 type = ppc64_elf_howto_raw[i].type;
1814 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1815 / sizeof (ppc64_elf_howto_table[0])));
1816 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1817 }
1818 }
1819
1820 static reloc_howto_type *
1821 ppc64_elf_reloc_type_lookup (abfd, code)
1822 bfd *abfd ATTRIBUTE_UNUSED;
1823 bfd_reloc_code_real_type code;
1824 {
1825 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1826
1827 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1828 /* Initialize howto table if needed. */
1829 ppc_howto_init ();
1830
1831 switch ((int) code)
1832 {
1833 default:
1834 return (reloc_howto_type *) NULL;
1835
1836 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1837 break;
1838 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1839 break;
1840 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1841 break;
1842 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1843 break;
1844 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1845 break;
1846 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1847 break;
1848 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1849 break;
1850 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1851 break;
1852 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1853 break;
1854 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1855 break;
1856 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1857 break;
1858 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1859 break;
1860 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1861 break;
1862 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1863 break;
1864 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1865 break;
1866 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1867 break;
1868 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1869 break;
1870 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1871 break;
1872 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1873 break;
1874 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1875 break;
1876 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1877 break;
1878 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1879 break;
1880 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1881 break;
1882 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1883 break;
1884 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1885 break;
1886 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1887 break;
1888 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1889 break;
1890 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1891 break;
1892 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1893 break;
1894 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1895 break;
1896 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1897 break;
1898 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1899 break;
1900 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1901 break;
1902 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1903 break;
1904 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1905 break;
1906 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1907 break;
1908 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1909 break;
1910 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1911 break;
1912 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1913 break;
1914 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1915 break;
1916 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1917 break;
1918 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1919 break;
1920 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1921 break;
1922 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1923 break;
1924 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1925 break;
1926 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1927 break;
1928 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1929 break;
1930 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1931 break;
1932 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1933 break;
1934 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1935 break;
1936 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1937 break;
1938 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1939 break;
1940 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1941 break;
1942 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1943 break;
1944 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1945 break;
1946 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
1947 break;
1948 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
1949 break;
1950 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
1951 break;
1952 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
1953 break;
1954 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
1955 break;
1956 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
1957 break;
1958 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
1959 break;
1960 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
1961 break;
1962 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
1963 break;
1964 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
1965 break;
1966 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
1967 break;
1968 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
1969 break;
1970 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
1971 break;
1972 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
1973 break;
1974 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
1975 break;
1976 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
1977 break;
1978 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
1979 break;
1980 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
1981 break;
1982 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
1983 break;
1984 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
1985 break;
1986 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
1987 break;
1988 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
1989 break;
1990 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
1991 break;
1992 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
1993 break;
1994 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
1995 break;
1996 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
1997 break;
1998 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
1999 break;
2000 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2001 break;
2002 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2003 break;
2004 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2005 break;
2006 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2007 break;
2008 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2009 break;
2010 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2011 break;
2012 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2013 break;
2014 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2015 break;
2016 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2017 break;
2018 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2019 break;
2020 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2021 break;
2022 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2023 break;
2024 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2025 break;
2026 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2027 break;
2028 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2029 break;
2030 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2031 break;
2032 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2033 break;
2034 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2035 break;
2036 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2037 break;
2038 }
2039
2040 return ppc64_elf_howto_table[(int) r];
2041 };
2042
2043 /* Set the howto pointer for a PowerPC ELF reloc. */
2044
2045 static void
2046 ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
2047 bfd *abfd ATTRIBUTE_UNUSED;
2048 arelent *cache_ptr;
2049 Elf_Internal_Rela *dst;
2050 {
2051 unsigned int type;
2052
2053 /* Initialize howto table if needed. */
2054 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2055 ppc_howto_init ();
2056
2057 type = ELF64_R_TYPE (dst->r_info);
2058 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2059 / sizeof (ppc64_elf_howto_table[0])));
2060 cache_ptr->howto = ppc64_elf_howto_table[type];
2061 }
2062
2063 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2064
2065 static bfd_reloc_status_type
2066 ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data,
2067 input_section, output_bfd, error_message)
2068 bfd *abfd;
2069 arelent *reloc_entry;
2070 asymbol *symbol;
2071 PTR data;
2072 asection *input_section;
2073 bfd *output_bfd;
2074 char **error_message;
2075 {
2076 /* If this is a relocatable link (output_bfd test tells us), just
2077 call the generic function. Any adjustment will be done at final
2078 link time. */
2079 if (output_bfd != NULL)
2080 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2081 input_section, output_bfd, error_message);
2082
2083 /* Adjust the addend for sign extension of the low 16 bits.
2084 We won't actually be using the low 16 bits, so trashing them
2085 doesn't matter. */
2086 reloc_entry->addend += 0x8000;
2087 return bfd_reloc_continue;
2088 }
2089
2090 static bfd_reloc_status_type
2091 ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data,
2092 input_section, output_bfd, error_message)
2093 bfd *abfd;
2094 arelent *reloc_entry;
2095 asymbol *symbol;
2096 PTR data;
2097 asection *input_section;
2098 bfd *output_bfd;
2099 char **error_message;
2100 {
2101 long insn;
2102 enum elf_ppc64_reloc_type r_type;
2103 bfd_size_type octets;
2104 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2105 bfd_boolean is_power4 = FALSE;
2106
2107 /* If this is a relocatable link (output_bfd test tells us), just
2108 call the generic function. Any adjustment will be done at final
2109 link time. */
2110 if (output_bfd != NULL)
2111 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2112 input_section, output_bfd, error_message);
2113
2114 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2115 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2116 insn &= ~(0x01 << 21);
2117 r_type = (enum elf_ppc64_reloc_type) reloc_entry->howto->type;
2118 if (r_type == R_PPC64_ADDR14_BRTAKEN
2119 || r_type == R_PPC64_REL14_BRTAKEN)
2120 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2121
2122 if (is_power4)
2123 {
2124 /* Set 'a' bit. This is 0b00010 in BO field for branch
2125 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2126 for branch on CTR insns (BO == 1a00t or 1a01t). */
2127 if ((insn & (0x14 << 21)) == (0x04 << 21))
2128 insn |= 0x02 << 21;
2129 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2130 insn |= 0x08 << 21;
2131 else
2132 return bfd_reloc_continue;
2133 }
2134 else
2135 {
2136 bfd_vma target = 0;
2137 bfd_vma from;
2138
2139 if (!bfd_is_com_section (symbol->section))
2140 target = symbol->value;
2141 target += symbol->section->output_section->vma;
2142 target += symbol->section->output_offset;
2143 target += reloc_entry->addend;
2144
2145 from = (reloc_entry->address
2146 + input_section->output_offset
2147 + input_section->output_section->vma);
2148
2149 /* Invert 'y' bit if not the default. */
2150 if ((bfd_signed_vma) (target - from) < 0)
2151 insn ^= 0x01 << 21;
2152 }
2153 bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets);
2154 return bfd_reloc_continue;
2155 }
2156
2157 static bfd_reloc_status_type
2158 ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data,
2159 input_section, output_bfd, error_message)
2160 bfd *abfd;
2161 arelent *reloc_entry;
2162 asymbol *symbol;
2163 PTR data;
2164 asection *input_section;
2165 bfd *output_bfd;
2166 char **error_message;
2167 {
2168 /* If this is a relocatable link (output_bfd test tells us), just
2169 call the generic function. Any adjustment will be done at final
2170 link time. */
2171 if (output_bfd != NULL)
2172 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2173 input_section, output_bfd, error_message);
2174
2175 /* Subtract the symbol section base address. */
2176 reloc_entry->addend -= symbol->section->output_section->vma;
2177 return bfd_reloc_continue;
2178 }
2179
2180 static bfd_reloc_status_type
2181 ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data,
2182 input_section, output_bfd, error_message)
2183 bfd *abfd;
2184 arelent *reloc_entry;
2185 asymbol *symbol;
2186 PTR data;
2187 asection *input_section;
2188 bfd *output_bfd;
2189 char **error_message;
2190 {
2191 /* If this is a relocatable link (output_bfd test tells us), just
2192 call the generic function. Any adjustment will be done at final
2193 link time. */
2194 if (output_bfd != NULL)
2195 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2196 input_section, output_bfd, error_message);
2197
2198 /* Subtract the symbol section base address. */
2199 reloc_entry->addend -= symbol->section->output_section->vma;
2200
2201 /* Adjust the addend for sign extension of the low 16 bits. */
2202 reloc_entry->addend += 0x8000;
2203 return bfd_reloc_continue;
2204 }
2205
2206 static bfd_reloc_status_type
2207 ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data,
2208 input_section, output_bfd, error_message)
2209 bfd *abfd;
2210 arelent *reloc_entry;
2211 asymbol *symbol;
2212 PTR data;
2213 asection *input_section;
2214 bfd *output_bfd;
2215 char **error_message;
2216 {
2217 bfd_vma TOCstart;
2218
2219 /* If this is a relocatable link (output_bfd test tells us), just
2220 call the generic function. Any adjustment will be done at final
2221 link time. */
2222 if (output_bfd != NULL)
2223 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2224 input_section, output_bfd, error_message);
2225
2226 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2227 if (TOCstart == 0)
2228 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2229
2230 /* Subtract the TOC base address. */
2231 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2232 return bfd_reloc_continue;
2233 }
2234
2235 static bfd_reloc_status_type
2236 ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data,
2237 input_section, output_bfd, error_message)
2238 bfd *abfd;
2239 arelent *reloc_entry;
2240 asymbol *symbol;
2241 PTR data;
2242 asection *input_section;
2243 bfd *output_bfd;
2244 char **error_message;
2245 {
2246 bfd_vma TOCstart;
2247
2248 /* If this is a relocatable link (output_bfd test tells us), just
2249 call the generic function. Any adjustment will be done at final
2250 link time. */
2251 if (output_bfd != NULL)
2252 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2253 input_section, output_bfd, error_message);
2254
2255 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2256 if (TOCstart == 0)
2257 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2258
2259 /* Subtract the TOC base address. */
2260 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2261
2262 /* Adjust the addend for sign extension of the low 16 bits. */
2263 reloc_entry->addend += 0x8000;
2264 return bfd_reloc_continue;
2265 }
2266
2267 static bfd_reloc_status_type
2268 ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data,
2269 input_section, output_bfd, error_message)
2270 bfd *abfd;
2271 arelent *reloc_entry;
2272 asymbol *symbol;
2273 PTR data;
2274 asection *input_section;
2275 bfd *output_bfd;
2276 char **error_message;
2277 {
2278 bfd_vma TOCstart;
2279 bfd_size_type octets;
2280
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2283 link time. */
2284 if (output_bfd != NULL)
2285 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2286 input_section, output_bfd, error_message);
2287
2288 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2289 if (TOCstart == 0)
2290 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2291
2292 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2293 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2294 return bfd_reloc_ok;
2295 }
2296
2297 static bfd_reloc_status_type
2298 ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data,
2299 input_section, output_bfd, error_message)
2300 bfd *abfd;
2301 arelent *reloc_entry;
2302 asymbol *symbol;
2303 PTR data;
2304 asection *input_section;
2305 bfd *output_bfd;
2306 char **error_message;
2307 {
2308 /* If this is a relocatable link (output_bfd test tells us), just
2309 call the generic function. Any adjustment will be done at final
2310 link time. */
2311 if (output_bfd != NULL)
2312 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2313 input_section, output_bfd, error_message);
2314
2315 if (error_message != NULL)
2316 {
2317 static char buf[60];
2318 sprintf (buf, "generic linker can't handle %s",
2319 reloc_entry->howto->name);
2320 *error_message = buf;
2321 }
2322 return bfd_reloc_dangerous;
2323 }
2324
2325 /* Fix bad default arch selected for a 64 bit input bfd when the
2326 default is 32 bit. */
2327
2328 static bfd_boolean
2329 ppc64_elf_object_p (abfd)
2330 bfd *abfd;
2331 {
2332 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2333 {
2334 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2335
2336 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2337 {
2338 /* Relies on arch after 32 bit default being 64 bit default. */
2339 abfd->arch_info = abfd->arch_info->next;
2340 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2341 }
2342 }
2343 return TRUE;
2344 }
2345
2346 /* Merge backend specific data from an object file to the output
2347 object file when linking. */
2348
2349 static bfd_boolean
2350 ppc64_elf_merge_private_bfd_data (ibfd, obfd)
2351 bfd *ibfd;
2352 bfd *obfd;
2353 {
2354 /* Check if we have the same endianess. */
2355 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2356 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2357 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2358 {
2359 const char *msg;
2360
2361 if (bfd_big_endian (ibfd))
2362 msg = _("%s: compiled for a big endian system and target is little endian");
2363 else
2364 msg = _("%s: compiled for a little endian system and target is big endian");
2365
2366 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
2367
2368 bfd_set_error (bfd_error_wrong_format);
2369 return FALSE;
2370 }
2371
2372 return TRUE;
2373 }
2374
2375 struct _ppc64_elf_section_data
2376 {
2377 struct bfd_elf_section_data elf;
2378
2379 /* An array with one entry for each opd function descriptor. */
2380 union
2381 {
2382 /* Points to the function code section for local opd entries. */
2383 asection **func_sec;
2384 /* After editing .opd, adjust references to opd local syms. */
2385 long *adjust;
2386 } opd;
2387
2388 /* An array for toc sections, indexed by offset/8.
2389 Specifies the relocation symbol index used at a given toc offset. */
2390 unsigned *t_symndx;
2391 };
2392
2393 #define ppc64_elf_section_data(sec) \
2394 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2395
2396 static bfd_boolean
2397 ppc64_elf_new_section_hook (abfd, sec)
2398 bfd *abfd;
2399 asection *sec;
2400 {
2401 struct _ppc64_elf_section_data *sdata;
2402 bfd_size_type amt = sizeof (*sdata);
2403
2404 sdata = (struct _ppc64_elf_section_data *) bfd_zalloc (abfd, amt);
2405 if (sdata == NULL)
2406 return FALSE;
2407 sec->used_by_bfd = (PTR) sdata;
2408
2409 return _bfd_elf_new_section_hook (abfd, sec);
2410 }
2411 \f
2412 /* The following functions are specific to the ELF linker, while
2413 functions above are used generally. Those named ppc64_elf_* are
2414 called by the main ELF linker code. They appear in this file more
2415 or less in the order in which they are called. eg.
2416 ppc64_elf_check_relocs is called early in the link process,
2417 ppc64_elf_finish_dynamic_sections is one of the last functions
2418 called.
2419
2420 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2421 functions have both a function code symbol and a function descriptor
2422 symbol. A call to foo in a relocatable object file looks like:
2423
2424 . .text
2425 . x:
2426 . bl .foo
2427 . nop
2428
2429 The function definition in another object file might be:
2430
2431 . .section .opd
2432 . foo: .quad .foo
2433 . .quad .TOC.@tocbase
2434 . .quad 0
2435 .
2436 . .text
2437 . .foo: blr
2438
2439 When the linker resolves the call during a static link, the branch
2440 unsurprisingly just goes to .foo and the .opd information is unused.
2441 If the function definition is in a shared library, things are a little
2442 different: The call goes via a plt call stub, the opd information gets
2443 copied to the plt, and the linker patches the nop.
2444
2445 . x:
2446 . bl .foo_stub
2447 . ld 2,40(1)
2448 .
2449 .
2450 . .foo_stub:
2451 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2452 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2453 . std 2,40(1) # this is the general idea
2454 . ld 11,0(12)
2455 . ld 2,8(12)
2456 . mtctr 11
2457 . ld 11,16(12)
2458 . bctr
2459 .
2460 . .section .plt
2461 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2462
2463 The "reloc ()" notation is supposed to indicate that the linker emits
2464 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2465 copying.
2466
2467 What are the difficulties here? Well, firstly, the relocations
2468 examined by the linker in check_relocs are against the function code
2469 sym .foo, while the dynamic relocation in the plt is emitted against
2470 the function descriptor symbol, foo. Somewhere along the line, we need
2471 to carefully copy dynamic link information from one symbol to the other.
2472 Secondly, the generic part of the elf linker will make .foo a dynamic
2473 symbol as is normal for most other backends. We need foo dynamic
2474 instead, at least for an application final link. However, when
2475 creating a shared library containing foo, we need to have both symbols
2476 dynamic so that references to .foo are satisfied during the early
2477 stages of linking. Otherwise the linker might decide to pull in a
2478 definition from some other object, eg. a static library. */
2479
2480 /* The linker needs to keep track of the number of relocs that it
2481 decides to copy as dynamic relocs in check_relocs for each symbol.
2482 This is so that it can later discard them if they are found to be
2483 unnecessary. We store the information in a field extending the
2484 regular ELF linker hash table. */
2485
2486 struct ppc_dyn_relocs
2487 {
2488 struct ppc_dyn_relocs *next;
2489
2490 /* The input section of the reloc. */
2491 asection *sec;
2492
2493 /* Total number of relocs copied for the input section. */
2494 bfd_size_type count;
2495
2496 /* Number of pc-relative relocs copied for the input section. */
2497 bfd_size_type pc_count;
2498 };
2499
2500 /* Track GOT entries needed for a given symbol. We might need more
2501 than one got entry per symbol. */
2502 struct got_entry
2503 {
2504 struct got_entry *next;
2505
2506 /* The symbol addend that we'll be placing in the GOT. */
2507 bfd_vma addend;
2508
2509 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2510 union
2511 {
2512 bfd_signed_vma refcount;
2513 bfd_vma offset;
2514 } got;
2515
2516 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2517 TLS_TPREL or TLS_DTPREL for tls entries. */
2518 char tls_type;
2519 };
2520
2521 /* The same for PLT. */
2522 struct plt_entry
2523 {
2524 struct plt_entry *next;
2525
2526 bfd_vma addend;
2527
2528 union
2529 {
2530 bfd_signed_vma refcount;
2531 bfd_vma offset;
2532 } plt;
2533 };
2534
2535 /* Of those relocs that might be copied as dynamic relocs, this macro
2536 selects those that must be copied when linking a shared library,
2537 even when the symbol is local. */
2538
2539 #define MUST_BE_DYN_RELOC(RTYPE) \
2540 ((RTYPE) != R_PPC64_REL32 \
2541 && (RTYPE) != R_PPC64_REL64 \
2542 && (RTYPE) != R_PPC64_REL30)
2543
2544 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2545 copying dynamic variables from a shared lib into an app's dynbss
2546 section, and instead use a dynamic relocation to point into the
2547 shared lib. */
2548 #define ELIMINATE_COPY_RELOCS 1
2549
2550 /* Section name for stubs is the associated section name plus this
2551 string. */
2552 #define STUB_SUFFIX ".stub"
2553
2554 /* Linker stubs.
2555 ppc_stub_long_branch:
2556 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2557 destination, but a 24 bit branch in a stub section will reach.
2558 . b dest
2559
2560 ppc_stub_plt_branch:
2561 Similar to the above, but a 24 bit branch in the stub section won't
2562 reach its destination.
2563 . addis %r12,%r2,xxx@toc@ha
2564 . ld %r11,xxx@toc@l(%r12)
2565 . mtctr %r11
2566 . bctr
2567
2568 ppc_stub_plt_call:
2569 Used to call a function in a shared library.
2570 . addis %r12,%r2,xxx@toc@ha
2571 . std %r2,40(%r1)
2572 . ld %r11,xxx+0@toc@l(%r12)
2573 . ld %r2,xxx+8@toc@l(%r12)
2574 . mtctr %r11
2575 . ld %r11,xxx+16@toc@l(%r12)
2576 . bctr
2577 */
2578
2579 enum ppc_stub_type {
2580 ppc_stub_none,
2581 ppc_stub_long_branch,
2582 ppc_stub_plt_branch,
2583 ppc_stub_plt_call
2584 };
2585
2586 struct ppc_stub_hash_entry {
2587
2588 /* Base hash table entry structure. */
2589 struct bfd_hash_entry root;
2590
2591 /* The stub section. */
2592 asection *stub_sec;
2593
2594 /* Offset within stub_sec of the beginning of this stub. */
2595 bfd_vma stub_offset;
2596
2597 /* Given the symbol's value and its section we can determine its final
2598 value when building the stubs (so the stub knows where to jump. */
2599 bfd_vma target_value;
2600 asection *target_section;
2601
2602 enum ppc_stub_type stub_type;
2603
2604 /* The symbol table entry, if any, that this was derived from. */
2605 struct ppc_link_hash_entry *h;
2606
2607 /* And the reloc addend that this was derived from. */
2608 bfd_vma addend;
2609
2610 /* Where this stub is being called from, or, in the case of combined
2611 stub sections, the first input section in the group. */
2612 asection *id_sec;
2613 };
2614
2615 struct ppc_branch_hash_entry {
2616
2617 /* Base hash table entry structure. */
2618 struct bfd_hash_entry root;
2619
2620 /* Offset within .branch_lt. */
2621 unsigned int offset;
2622
2623 /* Generation marker. */
2624 unsigned int iter;
2625 };
2626
2627 struct ppc_link_hash_entry
2628 {
2629 struct elf_link_hash_entry elf;
2630
2631 /* A pointer to the most recently used stub hash entry against this
2632 symbol. */
2633 struct ppc_stub_hash_entry *stub_cache;
2634
2635 /* Track dynamic relocs copied for this symbol. */
2636 struct ppc_dyn_relocs *dyn_relocs;
2637
2638 /* Link between function code and descriptor symbols. */
2639 struct elf_link_hash_entry *oh;
2640
2641 /* Flag function code and descriptor symbols. */
2642 unsigned int is_func:1;
2643 unsigned int is_func_descriptor:1;
2644 unsigned int is_entry:1;
2645
2646 /* Contexts in which symbol is used in the GOT (or TOC).
2647 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2648 corresponding relocs are encountered during check_relocs.
2649 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2650 indicate the corresponding GOT entry type is not needed.
2651 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2652 a TPREL one. We use a separate flag rather than setting TPREL
2653 just for convenience in distinguishing the two cases. */
2654 #define TLS_GD 1 /* GD reloc. */
2655 #define TLS_LD 2 /* LD reloc. */
2656 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2657 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2658 #define TLS_TLS 16 /* Any TLS reloc. */
2659 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2660 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2661 char tls_mask;
2662 };
2663
2664 /* ppc64 ELF linker hash table. */
2665
2666 struct ppc_link_hash_table
2667 {
2668 struct elf_link_hash_table elf;
2669
2670 /* The stub hash table. */
2671 struct bfd_hash_table stub_hash_table;
2672
2673 /* Another hash table for plt_branch stubs. */
2674 struct bfd_hash_table branch_hash_table;
2675
2676 /* Linker stub bfd. */
2677 bfd *stub_bfd;
2678
2679 /* Linker call-backs. */
2680 asection * (*add_stub_section) PARAMS ((const char *, asection *));
2681 void (*layout_sections_again) PARAMS ((void));
2682
2683 /* Array to keep track of which stub sections have been created, and
2684 information on stub grouping. */
2685 struct map_stub {
2686 /* This is the section to which stubs in the group will be attached. */
2687 asection *link_sec;
2688 /* The stub section. */
2689 asection *stub_sec;
2690 } *stub_group;
2691
2692 /* Assorted information used by ppc64_elf_size_stubs. */
2693 int top_index;
2694 asection **input_list;
2695
2696 /* Short-cuts to get to dynamic linker sections. */
2697 asection *sgot;
2698 asection *srelgot;
2699 asection *splt;
2700 asection *srelplt;
2701 asection *sdynbss;
2702 asection *srelbss;
2703 asection *sglink;
2704 asection *sfpr;
2705 asection *sbrlt;
2706 asection *srelbrlt;
2707
2708 /* Short-cut to first output tls section. */
2709 asection *tls_sec;
2710
2711 /* Shortcut to .__tls_get_addr. */
2712 struct elf_link_hash_entry *tls_get_addr;
2713
2714 /* TLS local dynamic got entry handling. */
2715 union {
2716 bfd_signed_vma refcount;
2717 bfd_vma offset;
2718 } tlsld_got;
2719
2720 /* Set on error. */
2721 unsigned int stub_error;
2722
2723 /* Flag set when small branches are detected. Used to
2724 select suitable defaults for the stub group size. */
2725 unsigned int has_14bit_branch;
2726
2727 /* Set if we detect a reference undefined weak symbol. */
2728 unsigned int have_undefweak;
2729
2730 /* Incremented every time we size stubs. */
2731 unsigned int stub_iteration;
2732
2733 /* Small local sym to section mapping cache. */
2734 struct sym_sec_cache sym_sec;
2735 };
2736
2737 static struct bfd_hash_entry *stub_hash_newfunc
2738 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2739 static struct bfd_hash_entry *branch_hash_newfunc
2740 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2741 static struct bfd_hash_entry *link_hash_newfunc
2742 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
2743 static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
2744 PARAMS ((bfd *));
2745 static void ppc64_elf_link_hash_table_free
2746 PARAMS ((struct bfd_link_hash_table *));
2747 static char *ppc_stub_name
2748 PARAMS ((const asection *, const asection *,
2749 const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
2750 static struct ppc_stub_hash_entry *ppc_get_stub_entry
2751 PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
2752 const Elf_Internal_Rela *, struct ppc_link_hash_table *));
2753 static struct ppc_stub_hash_entry *ppc_add_stub
2754 PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
2755 static bfd_boolean create_linkage_sections
2756 PARAMS ((bfd *, struct bfd_link_info *));
2757 static bfd_boolean create_got_section
2758 PARAMS ((bfd *, struct bfd_link_info *));
2759 static bfd_boolean ppc64_elf_create_dynamic_sections
2760 PARAMS ((bfd *, struct bfd_link_info *));
2761 static void ppc64_elf_copy_indirect_symbol
2762 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
2763 struct elf_link_hash_entry *));
2764 static bfd_boolean update_local_sym_info
2765 PARAMS ((bfd *, Elf_Internal_Shdr *, unsigned long, bfd_vma, int));
2766 static bfd_boolean update_plt_info
2767 PARAMS ((bfd *, struct ppc_link_hash_entry *, bfd_vma));
2768 static bfd_boolean ppc64_elf_check_relocs
2769 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2770 const Elf_Internal_Rela *));
2771 static asection * ppc64_elf_gc_mark_hook
2772 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
2773 struct elf_link_hash_entry *, Elf_Internal_Sym *));
2774 static bfd_boolean ppc64_elf_gc_sweep_hook
2775 PARAMS ((bfd *, struct bfd_link_info *, asection *,
2776 const Elf_Internal_Rela *));
2777 static bfd_boolean func_desc_adjust
2778 PARAMS ((struct elf_link_hash_entry *, PTR));
2779 static bfd_boolean ppc64_elf_func_desc_adjust
2780 PARAMS ((bfd *, struct bfd_link_info *));
2781 static bfd_boolean ppc64_elf_adjust_dynamic_symbol
2782 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
2783 static void ppc64_elf_hide_symbol
2784 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
2785 static bfd_boolean get_sym_h
2786 PARAMS ((struct elf_link_hash_entry **, Elf_Internal_Sym **, asection **,
2787 char **, Elf_Internal_Sym **, unsigned long, bfd *));
2788 static int get_tls_mask
2789 PARAMS ((char **, Elf_Internal_Sym **, const Elf_Internal_Rela *, bfd *));
2790 static bfd_boolean allocate_dynrelocs
2791 PARAMS ((struct elf_link_hash_entry *, PTR));
2792 static bfd_boolean readonly_dynrelocs
2793 PARAMS ((struct elf_link_hash_entry *, PTR));
2794 static enum elf_reloc_type_class ppc64_elf_reloc_type_class
2795 PARAMS ((const Elf_Internal_Rela *));
2796 static bfd_boolean ppc64_elf_size_dynamic_sections
2797 PARAMS ((bfd *, struct bfd_link_info *));
2798 static enum ppc_stub_type ppc_type_of_stub
2799 PARAMS ((asection *, const Elf_Internal_Rela *,
2800 struct ppc_link_hash_entry **, bfd_vma));
2801 static bfd_byte *build_plt_stub
2802 PARAMS ((bfd *, bfd_byte *, int, int));
2803 static bfd_boolean ppc_build_one_stub
2804 PARAMS ((struct bfd_hash_entry *, PTR));
2805 static bfd_boolean ppc_size_one_stub
2806 PARAMS ((struct bfd_hash_entry *, PTR));
2807 static void group_sections
2808 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, bfd_boolean));
2809 static bfd_boolean ppc64_elf_relocate_section
2810 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
2811 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
2812 asection **));
2813 static bfd_boolean ppc64_elf_finish_dynamic_symbol
2814 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2815 Elf_Internal_Sym *));
2816 static bfd_boolean ppc64_elf_finish_dynamic_sections
2817 PARAMS ((bfd *, struct bfd_link_info *));
2818
2819 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2820
2821 #define ppc_hash_table(p) \
2822 ((struct ppc_link_hash_table *) ((p)->hash))
2823
2824 #define ppc_stub_hash_lookup(table, string, create, copy) \
2825 ((struct ppc_stub_hash_entry *) \
2826 bfd_hash_lookup ((table), (string), (create), (copy)))
2827
2828 #define ppc_branch_hash_lookup(table, string, create, copy) \
2829 ((struct ppc_branch_hash_entry *) \
2830 bfd_hash_lookup ((table), (string), (create), (copy)))
2831
2832 /* Create an entry in the stub hash table. */
2833
2834 static struct bfd_hash_entry *
2835 stub_hash_newfunc (entry, table, string)
2836 struct bfd_hash_entry *entry;
2837 struct bfd_hash_table *table;
2838 const char *string;
2839 {
2840 /* Allocate the structure if it has not already been allocated by a
2841 subclass. */
2842 if (entry == NULL)
2843 {
2844 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2845 if (entry == NULL)
2846 return entry;
2847 }
2848
2849 /* Call the allocation method of the superclass. */
2850 entry = bfd_hash_newfunc (entry, table, string);
2851 if (entry != NULL)
2852 {
2853 struct ppc_stub_hash_entry *eh;
2854
2855 /* Initialize the local fields. */
2856 eh = (struct ppc_stub_hash_entry *) entry;
2857 eh->stub_sec = NULL;
2858 eh->stub_offset = 0;
2859 eh->target_value = 0;
2860 eh->target_section = NULL;
2861 eh->stub_type = ppc_stub_none;
2862 eh->h = NULL;
2863 eh->id_sec = NULL;
2864 }
2865
2866 return entry;
2867 }
2868
2869 /* Create an entry in the branch hash table. */
2870
2871 static struct bfd_hash_entry *
2872 branch_hash_newfunc (entry, table, string)
2873 struct bfd_hash_entry *entry;
2874 struct bfd_hash_table *table;
2875 const char *string;
2876 {
2877 /* Allocate the structure if it has not already been allocated by a
2878 subclass. */
2879 if (entry == NULL)
2880 {
2881 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2882 if (entry == NULL)
2883 return entry;
2884 }
2885
2886 /* Call the allocation method of the superclass. */
2887 entry = bfd_hash_newfunc (entry, table, string);
2888 if (entry != NULL)
2889 {
2890 struct ppc_branch_hash_entry *eh;
2891
2892 /* Initialize the local fields. */
2893 eh = (struct ppc_branch_hash_entry *) entry;
2894 eh->offset = 0;
2895 eh->iter = 0;
2896 }
2897
2898 return entry;
2899 }
2900
2901 /* Create an entry in a ppc64 ELF linker hash table. */
2902
2903 static struct bfd_hash_entry *
2904 link_hash_newfunc (entry, table, string)
2905 struct bfd_hash_entry *entry;
2906 struct bfd_hash_table *table;
2907 const char *string;
2908 {
2909 /* Allocate the structure if it has not already been allocated by a
2910 subclass. */
2911 if (entry == NULL)
2912 {
2913 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2914 if (entry == NULL)
2915 return entry;
2916 }
2917
2918 /* Call the allocation method of the superclass. */
2919 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2920 if (entry != NULL)
2921 {
2922 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2923
2924 eh->stub_cache = NULL;
2925 eh->dyn_relocs = NULL;
2926 eh->oh = NULL;
2927 eh->is_func = 0;
2928 eh->is_func_descriptor = 0;
2929 eh->is_entry = 0;
2930 eh->tls_mask = 0;
2931 }
2932
2933 return entry;
2934 }
2935
2936 /* Create a ppc64 ELF linker hash table. */
2937
2938 static struct bfd_link_hash_table *
2939 ppc64_elf_link_hash_table_create (abfd)
2940 bfd *abfd;
2941 {
2942 struct ppc_link_hash_table *htab;
2943 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2944
2945 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
2946 if (htab == NULL)
2947 return NULL;
2948
2949 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2950 {
2951 free (htab);
2952 return NULL;
2953 }
2954
2955 /* Init the stub hash table too. */
2956 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2957 return NULL;
2958
2959 /* And the branch hash table. */
2960 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2961 return NULL;
2962
2963 htab->stub_bfd = NULL;
2964 htab->add_stub_section = NULL;
2965 htab->layout_sections_again = NULL;
2966 htab->stub_group = NULL;
2967 htab->sgot = NULL;
2968 htab->srelgot = NULL;
2969 htab->splt = NULL;
2970 htab->srelplt = NULL;
2971 htab->sdynbss = NULL;
2972 htab->srelbss = NULL;
2973 htab->sglink = NULL;
2974 htab->sfpr = NULL;
2975 htab->sbrlt = NULL;
2976 htab->srelbrlt = NULL;
2977 htab->tls_sec = NULL;
2978 htab->tls_get_addr = NULL;
2979 htab->tlsld_got.refcount = 0;
2980 htab->stub_error = 0;
2981 htab->has_14bit_branch = 0;
2982 htab->have_undefweak = 0;
2983 htab->stub_iteration = 0;
2984 htab->sym_sec.abfd = NULL;
2985 /* Initializing two fields of the union is just cosmetic. We really
2986 only care about glist, but when compiled on a 32-bit host the
2987 bfd_vma fields are larger. Setting the bfd_vma to zero makes
2988 debugger inspection of these fields look nicer. */
2989 htab->elf.init_refcount.refcount = 0;
2990 htab->elf.init_refcount.glist = NULL;
2991 htab->elf.init_offset.offset = 0;
2992 htab->elf.init_offset.glist = NULL;
2993
2994 return &htab->elf.root;
2995 }
2996
2997 /* Free the derived linker hash table. */
2998
2999 static void
3000 ppc64_elf_link_hash_table_free (hash)
3001 struct bfd_link_hash_table *hash;
3002 {
3003 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3004
3005 bfd_hash_table_free (&ret->stub_hash_table);
3006 bfd_hash_table_free (&ret->branch_hash_table);
3007 _bfd_generic_link_hash_table_free (hash);
3008 }
3009
3010 /* Build a name for an entry in the stub hash table. */
3011
3012 static char *
3013 ppc_stub_name (input_section, sym_sec, h, rel)
3014 const asection *input_section;
3015 const asection *sym_sec;
3016 const struct ppc_link_hash_entry *h;
3017 const Elf_Internal_Rela *rel;
3018 {
3019 char *stub_name;
3020 bfd_size_type len;
3021
3022 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3023 offsets from a sym as a branch target? In fact, we could
3024 probably assume the addend is always zero. */
3025 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3026
3027 if (h)
3028 {
3029 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3030 stub_name = bfd_malloc (len);
3031 if (stub_name != NULL)
3032 {
3033 sprintf (stub_name, "%08x_%s+%x",
3034 input_section->id & 0xffffffff,
3035 h->elf.root.root.string,
3036 (int) rel->r_addend & 0xffffffff);
3037 }
3038 }
3039 else
3040 {
3041 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3042 stub_name = bfd_malloc (len);
3043 if (stub_name != NULL)
3044 {
3045 sprintf (stub_name, "%08x_%x:%x+%x",
3046 input_section->id & 0xffffffff,
3047 sym_sec->id & 0xffffffff,
3048 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3049 (int) rel->r_addend & 0xffffffff);
3050 }
3051 }
3052 return stub_name;
3053 }
3054
3055 /* Look up an entry in the stub hash. Stub entries are cached because
3056 creating the stub name takes a bit of time. */
3057
3058 static struct ppc_stub_hash_entry *
3059 ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
3060 const asection *input_section;
3061 const asection *sym_sec;
3062 struct elf_link_hash_entry *hash;
3063 const Elf_Internal_Rela *rel;
3064 struct ppc_link_hash_table *htab;
3065 {
3066 struct ppc_stub_hash_entry *stub_entry;
3067 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3068 const asection *id_sec;
3069
3070 /* If this input section is part of a group of sections sharing one
3071 stub section, then use the id of the first section in the group.
3072 Stub names need to include a section id, as there may well be
3073 more than one stub used to reach say, printf, and we need to
3074 distinguish between them. */
3075 id_sec = htab->stub_group[input_section->id].link_sec;
3076
3077 if (h != NULL && h->stub_cache != NULL
3078 && h->stub_cache->h == h
3079 && h->stub_cache->id_sec == id_sec)
3080 {
3081 stub_entry = h->stub_cache;
3082 }
3083 else
3084 {
3085 char *stub_name;
3086
3087 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3088 if (stub_name == NULL)
3089 return NULL;
3090
3091 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3092 stub_name, FALSE, FALSE);
3093 if (h != NULL)
3094 h->stub_cache = stub_entry;
3095
3096 free (stub_name);
3097 }
3098
3099 return stub_entry;
3100 }
3101
3102 /* Add a new stub entry to the stub hash. Not all fields of the new
3103 stub entry are initialised. */
3104
3105 static struct ppc_stub_hash_entry *
3106 ppc_add_stub (stub_name, section, htab)
3107 const char *stub_name;
3108 asection *section;
3109 struct ppc_link_hash_table *htab;
3110 {
3111 asection *link_sec;
3112 asection *stub_sec;
3113 struct ppc_stub_hash_entry *stub_entry;
3114
3115 link_sec = htab->stub_group[section->id].link_sec;
3116 stub_sec = htab->stub_group[section->id].stub_sec;
3117 if (stub_sec == NULL)
3118 {
3119 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3120 if (stub_sec == NULL)
3121 {
3122 size_t namelen;
3123 bfd_size_type len;
3124 char *s_name;
3125
3126 namelen = strlen (link_sec->name);
3127 len = namelen + sizeof (STUB_SUFFIX);
3128 s_name = bfd_alloc (htab->stub_bfd, len);
3129 if (s_name == NULL)
3130 return NULL;
3131
3132 memcpy (s_name, link_sec->name, namelen);
3133 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3134 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3135 if (stub_sec == NULL)
3136 return NULL;
3137 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3138 }
3139 htab->stub_group[section->id].stub_sec = stub_sec;
3140 }
3141
3142 /* Enter this entry into the linker stub hash table. */
3143 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3144 TRUE, FALSE);
3145 if (stub_entry == NULL)
3146 {
3147 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3148 bfd_archive_filename (section->owner),
3149 stub_name);
3150 return NULL;
3151 }
3152
3153 stub_entry->stub_sec = stub_sec;
3154 stub_entry->stub_offset = 0;
3155 stub_entry->id_sec = link_sec;
3156 return stub_entry;
3157 }
3158
3159 /* Create sections for linker generated code. */
3160
3161 static bfd_boolean
3162 create_linkage_sections (dynobj, info)
3163 bfd *dynobj;
3164 struct bfd_link_info *info;
3165 {
3166 struct ppc_link_hash_table *htab;
3167 flagword flags;
3168
3169 htab = ppc_hash_table (info);
3170
3171 /* Create .sfpr for code to save and restore fp regs. */
3172 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3173 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3174 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3175 if (htab->sfpr == NULL
3176 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3177 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3178 return FALSE;
3179
3180 /* Create .glink for lazy dynamic linking support. */
3181 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
3182 if (htab->sglink == NULL
3183 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
3184 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
3185 return FALSE;
3186
3187 /* Create .branch_lt for plt_branch stubs. */
3188 flags = (SEC_ALLOC | SEC_LOAD
3189 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3190 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3191 if (htab->sbrlt == NULL
3192 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
3193 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
3194 return FALSE;
3195
3196 if (info->shared)
3197 {
3198 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3199 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3200 htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3201 if (!htab->srelbrlt
3202 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
3203 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
3204 return FALSE;
3205 }
3206 return TRUE;
3207 }
3208
3209 /* Create .got and .rela.got sections in DYNOBJ, and set up
3210 shortcuts to them in our hash table. */
3211
3212 static bfd_boolean
3213 create_got_section (dynobj, info)
3214 bfd *dynobj;
3215 struct bfd_link_info *info;
3216 {
3217 struct ppc_link_hash_table *htab;
3218
3219 if (! _bfd_elf_create_got_section (dynobj, info))
3220 return FALSE;
3221
3222 htab = ppc_hash_table (info);
3223 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
3224 if (!htab->sgot)
3225 abort ();
3226
3227 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
3228 if (!htab->srelgot
3229 || ! bfd_set_section_flags (dynobj, htab->srelgot,
3230 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3231 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3232 | SEC_READONLY))
3233 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
3234 return FALSE;
3235 return TRUE;
3236 }
3237
3238 /* Create the dynamic sections, and set up shortcuts. */
3239
3240 static bfd_boolean
3241 ppc64_elf_create_dynamic_sections (dynobj, info)
3242 bfd *dynobj;
3243 struct bfd_link_info *info;
3244 {
3245 struct ppc_link_hash_table *htab;
3246
3247 htab = ppc_hash_table (info);
3248 if (!htab->sgot && !create_got_section (dynobj, info))
3249 return FALSE;
3250
3251 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3252 return FALSE;
3253
3254 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
3255 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3256 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3257 if (!info->shared)
3258 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3259
3260 if (!htab->splt || !htab->srelplt || !htab->sdynbss
3261 || (!info->shared && !htab->srelbss))
3262 abort ();
3263
3264 return TRUE;
3265 }
3266
3267 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3268
3269 static void
3270 ppc64_elf_copy_indirect_symbol (bed, dir, ind)
3271 struct elf_backend_data *bed ATTRIBUTE_UNUSED;
3272 struct elf_link_hash_entry *dir, *ind;
3273 {
3274 struct ppc_link_hash_entry *edir, *eind;
3275
3276 edir = (struct ppc_link_hash_entry *) dir;
3277 eind = (struct ppc_link_hash_entry *) ind;
3278
3279 /* Copy over any dynamic relocs we may have on the indirect sym. */
3280 if (eind->dyn_relocs != NULL)
3281 {
3282 if (edir->dyn_relocs != NULL)
3283 {
3284 struct ppc_dyn_relocs **pp;
3285 struct ppc_dyn_relocs *p;
3286
3287 if (eind->elf.root.type == bfd_link_hash_indirect)
3288 abort ();
3289
3290 /* Add reloc counts against the weak sym to the strong sym
3291 list. Merge any entries against the same section. */
3292 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3293 {
3294 struct ppc_dyn_relocs *q;
3295
3296 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3297 if (q->sec == p->sec)
3298 {
3299 q->pc_count += p->pc_count;
3300 q->count += p->count;
3301 *pp = p->next;
3302 break;
3303 }
3304 if (q == NULL)
3305 pp = &p->next;
3306 }
3307 *pp = edir->dyn_relocs;
3308 }
3309
3310 edir->dyn_relocs = eind->dyn_relocs;
3311 eind->dyn_relocs = NULL;
3312 }
3313
3314 edir->is_func |= eind->is_func;
3315 edir->is_func_descriptor |= eind->is_func_descriptor;
3316 edir->is_entry |= eind->is_entry;
3317 edir->tls_mask |= eind->tls_mask;
3318
3319 /* Copy down any references that we may have already seen to the
3320 symbol which just became indirect. */
3321 edir->elf.elf_link_hash_flags |=
3322 (eind->elf.elf_link_hash_flags
3323 & (ELF_LINK_HASH_REF_DYNAMIC
3324 | ELF_LINK_HASH_REF_REGULAR
3325 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
3326 | ELF_LINK_NON_GOT_REF));
3327
3328 /* If we were called to copy over info for a weak sym, that's all. */
3329 if (eind->elf.root.type != bfd_link_hash_indirect)
3330 return;
3331
3332 /* Copy over got entries. */
3333 if (eind->elf.got.glist != NULL)
3334 {
3335 if (edir->elf.got.glist != NULL)
3336 {
3337 struct got_entry **entp;
3338 struct got_entry *ent;
3339
3340 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3341 {
3342 struct got_entry *dent;
3343
3344 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3345 if (dent->addend == ent->addend
3346 && dent->tls_type == ent->tls_type)
3347 {
3348 dent->got.refcount += ent->got.refcount;
3349 *entp = ent->next;
3350 break;
3351 }
3352 if (dent == NULL)
3353 entp = &ent->next;
3354 }
3355 *entp = edir->elf.got.glist;
3356 }
3357
3358 edir->elf.got.glist = eind->elf.got.glist;
3359 eind->elf.got.glist = NULL;
3360 }
3361
3362 /* And plt entries. */
3363 if (eind->elf.plt.plist != NULL)
3364 {
3365 if (edir->elf.plt.plist != NULL)
3366 {
3367 struct plt_entry **entp;
3368 struct plt_entry *ent;
3369
3370 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3371 {
3372 struct plt_entry *dent;
3373
3374 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3375 if (dent->addend == ent->addend)
3376 {
3377 dent->plt.refcount += ent->plt.refcount;
3378 *entp = ent->next;
3379 break;
3380 }
3381 if (dent == NULL)
3382 entp = &ent->next;
3383 }
3384 *entp = edir->elf.plt.plist;
3385 }
3386
3387 edir->elf.plt.plist = eind->elf.plt.plist;
3388 eind->elf.plt.plist = NULL;
3389 }
3390
3391 if (edir->elf.dynindx == -1)
3392 {
3393 edir->elf.dynindx = eind->elf.dynindx;
3394 edir->elf.dynstr_index = eind->elf.dynstr_index;
3395 eind->elf.dynindx = -1;
3396 eind->elf.dynstr_index = 0;
3397 }
3398 else
3399 BFD_ASSERT (eind->elf.dynindx == -1);
3400 }
3401
3402 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3403 symbols undefined on the command-line. */
3404
3405 bfd_boolean
3406 ppc64_elf_mark_entry_syms (info)
3407 struct bfd_link_info *info;
3408 {
3409 struct ppc_link_hash_table *htab;
3410 struct bfd_sym_chain *sym;
3411
3412 htab = ppc_hash_table (info);
3413 for (sym = info->gc_sym_list; sym; sym = sym->next)
3414 {
3415 struct elf_link_hash_entry *h;
3416
3417 h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
3418 if (h != NULL)
3419 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
3420 }
3421 return TRUE;
3422 }
3423
3424 static bfd_boolean
3425 update_local_sym_info (abfd, symtab_hdr, r_symndx, r_addend, tls_type)
3426 bfd *abfd;
3427 Elf_Internal_Shdr *symtab_hdr;
3428 unsigned long r_symndx;
3429 bfd_vma r_addend;
3430 int tls_type;
3431 {
3432 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3433 char *local_got_tls_masks;
3434
3435 if (local_got_ents == NULL)
3436 {
3437 bfd_size_type size = symtab_hdr->sh_info;
3438
3439 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3440 local_got_ents = (struct got_entry **) bfd_zalloc (abfd, size);
3441 if (local_got_ents == NULL)
3442 return FALSE;
3443 elf_local_got_ents (abfd) = local_got_ents;
3444 }
3445
3446 if ((tls_type & TLS_EXPLICIT) == 0)
3447 {
3448 struct got_entry *ent;
3449
3450 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3451 if (ent->addend == r_addend && ent->tls_type == tls_type)
3452 break;
3453 if (ent == NULL)
3454 {
3455 bfd_size_type amt = sizeof (*ent);
3456 ent = (struct got_entry *) bfd_alloc (abfd, amt);
3457 if (ent == NULL)
3458 return FALSE;
3459 ent->next = local_got_ents[r_symndx];
3460 ent->addend = r_addend;
3461 ent->tls_type = tls_type;
3462 ent->got.refcount = 0;
3463 local_got_ents[r_symndx] = ent;
3464 }
3465 ent->got.refcount += 1;
3466 }
3467
3468 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3469 local_got_tls_masks[r_symndx] |= tls_type;
3470 return TRUE;
3471 }
3472
3473 static bfd_boolean
3474 update_plt_info (abfd, eh, addend)
3475 bfd *abfd;
3476 struct ppc_link_hash_entry *eh;
3477 bfd_vma addend;
3478 {
3479 struct plt_entry *ent;
3480
3481 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3482 if (ent->addend == addend)
3483 break;
3484 if (ent == NULL)
3485 {
3486 bfd_size_type amt = sizeof (*ent);
3487 ent = (struct plt_entry *) bfd_alloc (abfd, amt);
3488 if (ent == NULL)
3489 return FALSE;
3490 ent->next = eh->elf.plt.plist;
3491 ent->addend = addend;
3492 ent->plt.refcount = 0;
3493 eh->elf.plt.plist = ent;
3494 }
3495 ent->plt.refcount += 1;
3496 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3497 eh->is_func = 1;
3498 return TRUE;
3499 }
3500
3501 /* Look through the relocs for a section during the first phase, and
3502 calculate needed space in the global offset table, procedure
3503 linkage table, and dynamic reloc sections. */
3504
3505 static bfd_boolean
3506 ppc64_elf_check_relocs (abfd, info, sec, relocs)
3507 bfd *abfd;
3508 struct bfd_link_info *info;
3509 asection *sec;
3510 const Elf_Internal_Rela *relocs;
3511 {
3512 struct ppc_link_hash_table *htab;
3513 Elf_Internal_Shdr *symtab_hdr;
3514 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3515 const Elf_Internal_Rela *rel;
3516 const Elf_Internal_Rela *rel_end;
3517 asection *sreloc;
3518 asection **opd_sym_map;
3519
3520 if (info->relocateable)
3521 return TRUE;
3522
3523 htab = ppc_hash_table (info);
3524 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3525
3526 sym_hashes = elf_sym_hashes (abfd);
3527 sym_hashes_end = (sym_hashes
3528 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3529 - symtab_hdr->sh_info);
3530
3531 sreloc = NULL;
3532 opd_sym_map = NULL;
3533 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3534 {
3535 /* Garbage collection needs some extra help with .opd sections.
3536 We don't want to necessarily keep everything referenced by
3537 relocs in .opd, as that would keep all functions. Instead,
3538 if we reference an .opd symbol (a function descriptor), we
3539 want to keep the function code symbol's section. This is
3540 easy for global symbols, but for local syms we need to keep
3541 information about the associated function section. Later, if
3542 edit_opd deletes entries, we'll use this array to adjust
3543 local syms in .opd. */
3544 union opd_info {
3545 asection *func_section;
3546 long entry_adjust;
3547 };
3548 bfd_size_type amt;
3549
3550 amt = sec->_raw_size * sizeof (union opd_info) / 24;
3551 opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
3552 if (opd_sym_map == NULL)
3553 return FALSE;
3554 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3555 }
3556
3557 if (htab->elf.dynobj == NULL)
3558 htab->elf.dynobj = abfd;
3559 if (htab->sfpr == NULL
3560 && !create_linkage_sections (htab->elf.dynobj, info))
3561 return FALSE;
3562
3563 rel_end = relocs + sec->reloc_count;
3564 for (rel = relocs; rel < rel_end; rel++)
3565 {
3566 unsigned long r_symndx;
3567 struct elf_link_hash_entry *h;
3568 enum elf_ppc64_reloc_type r_type;
3569 int tls_type = 0;
3570
3571 r_symndx = ELF64_R_SYM (rel->r_info);
3572 if (r_symndx < symtab_hdr->sh_info)
3573 h = NULL;
3574 else
3575 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3576
3577 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
3578 switch (r_type)
3579 {
3580 case R_PPC64_GOT_TLSLD16:
3581 case R_PPC64_GOT_TLSLD16_LO:
3582 case R_PPC64_GOT_TLSLD16_HI:
3583 case R_PPC64_GOT_TLSLD16_HA:
3584 htab->tlsld_got.refcount += 1;
3585 tls_type = TLS_TLS | TLS_LD;
3586 goto dogottls;
3587
3588 case R_PPC64_GOT_TLSGD16:
3589 case R_PPC64_GOT_TLSGD16_LO:
3590 case R_PPC64_GOT_TLSGD16_HI:
3591 case R_PPC64_GOT_TLSGD16_HA:
3592 tls_type = TLS_TLS | TLS_GD;
3593 goto dogottls;
3594
3595 case R_PPC64_GOT_TPREL16_DS:
3596 case R_PPC64_GOT_TPREL16_LO_DS:
3597 case R_PPC64_GOT_TPREL16_HI:
3598 case R_PPC64_GOT_TPREL16_HA:
3599 if (info->shared)
3600 info->flags |= DF_STATIC_TLS;
3601 tls_type = TLS_TLS | TLS_TPREL;
3602 goto dogottls;
3603
3604 case R_PPC64_GOT_DTPREL16_DS:
3605 case R_PPC64_GOT_DTPREL16_LO_DS:
3606 case R_PPC64_GOT_DTPREL16_HI:
3607 case R_PPC64_GOT_DTPREL16_HA:
3608 tls_type = TLS_TLS | TLS_DTPREL;
3609 dogottls:
3610 sec->has_tls_reloc = 1;
3611 /* Fall thru */
3612
3613 case R_PPC64_GOT16:
3614 case R_PPC64_GOT16_DS:
3615 case R_PPC64_GOT16_HA:
3616 case R_PPC64_GOT16_HI:
3617 case R_PPC64_GOT16_LO:
3618 case R_PPC64_GOT16_LO_DS:
3619 /* This symbol requires a global offset table entry. */
3620 if (htab->sgot == NULL
3621 && !create_got_section (htab->elf.dynobj, info))
3622 return FALSE;
3623
3624 if (h != NULL)
3625 {
3626 struct ppc_link_hash_entry *eh;
3627 struct got_entry *ent;
3628
3629 eh = (struct ppc_link_hash_entry *) h;
3630 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3631 if (ent->addend == rel->r_addend
3632 && ent->tls_type == tls_type)
3633 break;
3634 if (ent == NULL)
3635 {
3636 bfd_size_type amt = sizeof (*ent);
3637 ent = (struct got_entry *) bfd_alloc (abfd, amt);
3638 if (ent == NULL)
3639 return FALSE;
3640 ent->next = eh->elf.got.glist;
3641 ent->addend = rel->r_addend;
3642 ent->tls_type = tls_type;
3643 ent->got.refcount = 0;
3644 eh->elf.got.glist = ent;
3645 }
3646 ent->got.refcount += 1;
3647 eh->tls_mask |= tls_type;
3648 }
3649 else
3650 /* This is a global offset table entry for a local symbol. */
3651 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3652 rel->r_addend, tls_type))
3653 return FALSE;
3654 break;
3655
3656 case R_PPC64_PLT16_HA:
3657 case R_PPC64_PLT16_HI:
3658 case R_PPC64_PLT16_LO:
3659 case R_PPC64_PLT32:
3660 case R_PPC64_PLT64:
3661 /* This symbol requires a procedure linkage table entry. We
3662 actually build the entry in adjust_dynamic_symbol,
3663 because this might be a case of linking PIC code without
3664 linking in any dynamic objects, in which case we don't
3665 need to generate a procedure linkage table after all. */
3666 if (h == NULL)
3667 {
3668 /* It does not make sense to have a procedure linkage
3669 table entry for a local symbol. */
3670 bfd_set_error (bfd_error_bad_value);
3671 return FALSE;
3672 }
3673 else
3674 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3675 rel->r_addend))
3676 return FALSE;
3677 break;
3678
3679 /* The following relocations don't need to propagate the
3680 relocation if linking a shared object since they are
3681 section relative. */
3682 case R_PPC64_SECTOFF:
3683 case R_PPC64_SECTOFF_LO:
3684 case R_PPC64_SECTOFF_HI:
3685 case R_PPC64_SECTOFF_HA:
3686 case R_PPC64_SECTOFF_DS:
3687 case R_PPC64_SECTOFF_LO_DS:
3688 case R_PPC64_TOC16:
3689 case R_PPC64_TOC16_LO:
3690 case R_PPC64_TOC16_HI:
3691 case R_PPC64_TOC16_HA:
3692 case R_PPC64_TOC16_DS:
3693 case R_PPC64_TOC16_LO_DS:
3694 case R_PPC64_DTPREL16:
3695 case R_PPC64_DTPREL16_LO:
3696 case R_PPC64_DTPREL16_HI:
3697 case R_PPC64_DTPREL16_HA:
3698 case R_PPC64_DTPREL16_DS:
3699 case R_PPC64_DTPREL16_LO_DS:
3700 case R_PPC64_DTPREL16_HIGHER:
3701 case R_PPC64_DTPREL16_HIGHERA:
3702 case R_PPC64_DTPREL16_HIGHEST:
3703 case R_PPC64_DTPREL16_HIGHESTA:
3704 break;
3705
3706 /* This relocation describes the C++ object vtable hierarchy.
3707 Reconstruct it for later use during GC. */
3708 case R_PPC64_GNU_VTINHERIT:
3709 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3710 return FALSE;
3711 break;
3712
3713 /* This relocation describes which C++ vtable entries are actually
3714 used. Record for later use during GC. */
3715 case R_PPC64_GNU_VTENTRY:
3716 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3717 return FALSE;
3718 break;
3719
3720 case R_PPC64_REL14:
3721 case R_PPC64_REL14_BRTAKEN:
3722 case R_PPC64_REL14_BRNTAKEN:
3723 htab->has_14bit_branch = 1;
3724 /* Fall through. */
3725
3726 case R_PPC64_REL24:
3727 if (h != NULL
3728 && h->root.root.string[0] == '.'
3729 && h->root.root.string[1] != 0)
3730 {
3731 /* We may need a .plt entry if the function this reloc
3732 refers to is in a shared lib. */
3733 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3734 rel->r_addend))
3735 return FALSE;
3736 if (h == htab->tls_get_addr)
3737 sec->has_tls_reloc = 1;
3738 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3739 == 0)
3740 && (h->root.root.string[15] == 0
3741 || h->root.root.string[15] == '@'))
3742 {
3743 htab->tls_get_addr = h;
3744 sec->has_tls_reloc = 1;
3745 }
3746 }
3747 break;
3748
3749 case R_PPC64_TPREL64:
3750 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3751 if (info->shared)
3752 info->flags |= DF_STATIC_TLS;
3753 goto dotlstoc;
3754
3755 case R_PPC64_DTPMOD64:
3756 if (rel + 1 < rel_end
3757 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3758 && rel[1].r_offset == rel->r_offset + 8)
3759 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3760 else
3761 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3762 goto dotlstoc;
3763
3764 case R_PPC64_DTPREL64:
3765 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3766 if (rel != relocs
3767 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3768 && rel[-1].r_offset == rel->r_offset - 8)
3769 /* This is the second reloc of a dtpmod, dtprel pair.
3770 Don't mark with TLS_DTPREL. */
3771 goto dodyn;
3772
3773 dotlstoc:
3774 sec->has_tls_reloc = 1;
3775 if (h != NULL)
3776 {
3777 struct ppc_link_hash_entry *eh;
3778 eh = (struct ppc_link_hash_entry *) h;
3779 eh->tls_mask |= tls_type;
3780 }
3781 else
3782 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3783 rel->r_addend, tls_type))
3784 return FALSE;
3785
3786 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3787 {
3788 /* One extra to simplify get_tls_mask. */
3789 bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
3790 ppc64_elf_section_data (sec)->t_symndx
3791 = (unsigned *) bfd_zalloc (abfd, amt);
3792 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3793 return FALSE;
3794 }
3795 BFD_ASSERT (rel->r_offset % 8 == 0);
3796 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3797
3798 /* Mark the second slot of a GD or LD entry.
3799 -1 to indicate GD and -2 to indicate LD. */
3800 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3801 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3802 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3803 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3804 goto dodyn;
3805
3806 case R_PPC64_TPREL16:
3807 case R_PPC64_TPREL16_LO:
3808 case R_PPC64_TPREL16_HI:
3809 case R_PPC64_TPREL16_HA:
3810 case R_PPC64_TPREL16_DS:
3811 case R_PPC64_TPREL16_LO_DS:
3812 case R_PPC64_TPREL16_HIGHER:
3813 case R_PPC64_TPREL16_HIGHERA:
3814 case R_PPC64_TPREL16_HIGHEST:
3815 case R_PPC64_TPREL16_HIGHESTA:
3816 if (info->shared)
3817 {
3818 info->flags |= DF_STATIC_TLS;
3819 goto dodyn;
3820 }
3821 break;
3822
3823 case R_PPC64_ADDR64:
3824 if (opd_sym_map != NULL
3825 && h != NULL
3826 && h->root.root.string[0] == '.'
3827 && h->root.root.string[1] != 0)
3828 {
3829 struct elf_link_hash_entry *fdh;
3830
3831 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3832 FALSE, FALSE, FALSE);
3833 if (fdh != NULL)
3834 {
3835 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
3836 ((struct ppc_link_hash_entry *) fdh)->oh = h;
3837 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3838 ((struct ppc_link_hash_entry *) h)->oh = fdh;
3839 }
3840 }
3841 if (opd_sym_map != NULL
3842 && h == NULL
3843 && rel + 1 < rel_end
3844 && ((enum elf_ppc64_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
3845 == R_PPC64_TOC))
3846 {
3847 asection *s;
3848
3849 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3850 r_symndx);
3851 if (s == NULL)
3852 return FALSE;
3853 else if (s != sec)
3854 opd_sym_map[rel->r_offset / 24] = s;
3855 }
3856 /* Fall through. */
3857
3858 case R_PPC64_REL30:
3859 case R_PPC64_REL32:
3860 case R_PPC64_REL64:
3861 case R_PPC64_ADDR14:
3862 case R_PPC64_ADDR14_BRNTAKEN:
3863 case R_PPC64_ADDR14_BRTAKEN:
3864 case R_PPC64_ADDR16:
3865 case R_PPC64_ADDR16_DS:
3866 case R_PPC64_ADDR16_HA:
3867 case R_PPC64_ADDR16_HI:
3868 case R_PPC64_ADDR16_HIGHER:
3869 case R_PPC64_ADDR16_HIGHERA:
3870 case R_PPC64_ADDR16_HIGHEST:
3871 case R_PPC64_ADDR16_HIGHESTA:
3872 case R_PPC64_ADDR16_LO:
3873 case R_PPC64_ADDR16_LO_DS:
3874 case R_PPC64_ADDR24:
3875 case R_PPC64_ADDR32:
3876 case R_PPC64_UADDR16:
3877 case R_PPC64_UADDR32:
3878 case R_PPC64_UADDR64:
3879 case R_PPC64_TOC:
3880 /* Don't propagate .opd relocs. */
3881 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3882 break;
3883
3884 /* Don't propagate relocs that the dynamic linker won't relocate. */
3885 if ((sec->flags & SEC_ALLOC) == 0)
3886 break;
3887
3888 /* If we are creating a shared library, and this is a reloc
3889 against a global symbol, or a non PC relative reloc
3890 against a local symbol, then we need to copy the reloc
3891 into the shared library. However, if we are linking with
3892 -Bsymbolic, we do not need to copy a reloc against a
3893 global symbol which is defined in an object we are
3894 including in the link (i.e., DEF_REGULAR is set). At
3895 this point we have not seen all the input files, so it is
3896 possible that DEF_REGULAR is not set now but will be set
3897 later (it is never cleared). In case of a weak definition,
3898 DEF_REGULAR may be cleared later by a strong definition in
3899 a shared library. We account for that possibility below by
3900 storing information in the dyn_relocs field of the hash
3901 table entry. A similar situation occurs when creating
3902 shared libraries and symbol visibility changes render the
3903 symbol local.
3904
3905 If on the other hand, we are creating an executable, we
3906 may need to keep relocations for symbols satisfied by a
3907 dynamic library if we manage to avoid copy relocs for the
3908 symbol. */
3909 dodyn:
3910 if ((info->shared
3911 && (MUST_BE_DYN_RELOC (r_type)
3912 || (h != NULL
3913 && (! info->symbolic
3914 || h->root.type == bfd_link_hash_defweak
3915 || (h->elf_link_hash_flags
3916 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3917 || (ELIMINATE_COPY_RELOCS
3918 && !info->shared
3919 && h != NULL
3920 && (h->root.type == bfd_link_hash_defweak
3921 || (h->elf_link_hash_flags
3922 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3923 {
3924 struct ppc_dyn_relocs *p;
3925 struct ppc_dyn_relocs **head;
3926
3927 /* We must copy these reloc types into the output file.
3928 Create a reloc section in dynobj and make room for
3929 this reloc. */
3930 if (sreloc == NULL)
3931 {
3932 const char *name;
3933 bfd *dynobj;
3934
3935 name = (bfd_elf_string_from_elf_section
3936 (abfd,
3937 elf_elfheader (abfd)->e_shstrndx,
3938 elf_section_data (sec)->rel_hdr.sh_name));
3939 if (name == NULL)
3940 return FALSE;
3941
3942 if (strncmp (name, ".rela", 5) != 0
3943 || strcmp (bfd_get_section_name (abfd, sec),
3944 name + 5) != 0)
3945 {
3946 (*_bfd_error_handler)
3947 (_("%s: bad relocation section name `%s\'"),
3948 bfd_archive_filename (abfd), name);
3949 bfd_set_error (bfd_error_bad_value);
3950 }
3951
3952 dynobj = htab->elf.dynobj;
3953 sreloc = bfd_get_section_by_name (dynobj, name);
3954 if (sreloc == NULL)
3955 {
3956 flagword flags;
3957
3958 sreloc = bfd_make_section (dynobj, name);
3959 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3960 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3961 if ((sec->flags & SEC_ALLOC) != 0)
3962 flags |= SEC_ALLOC | SEC_LOAD;
3963 if (sreloc == NULL
3964 || ! bfd_set_section_flags (dynobj, sreloc, flags)
3965 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
3966 return FALSE;
3967 }
3968 elf_section_data (sec)->sreloc = sreloc;
3969 }
3970
3971 /* If this is a global symbol, we count the number of
3972 relocations we need for this symbol. */
3973 if (h != NULL)
3974 {
3975 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
3976 }
3977 else
3978 {
3979 /* Track dynamic relocs needed for local syms too.
3980 We really need local syms available to do this
3981 easily. Oh well. */
3982
3983 asection *s;
3984 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3985 sec, r_symndx);
3986 if (s == NULL)
3987 return FALSE;
3988
3989 head = ((struct ppc_dyn_relocs **)
3990 &elf_section_data (s)->local_dynrel);
3991 }
3992
3993 p = *head;
3994 if (p == NULL || p->sec != sec)
3995 {
3996 p = ((struct ppc_dyn_relocs *)
3997 bfd_alloc (htab->elf.dynobj,
3998 (bfd_size_type) sizeof *p));
3999 if (p == NULL)
4000 return FALSE;
4001 p->next = *head;
4002 *head = p;
4003 p->sec = sec;
4004 p->count = 0;
4005 p->pc_count = 0;
4006 }
4007
4008 p->count += 1;
4009 if (!MUST_BE_DYN_RELOC (r_type))
4010 p->pc_count += 1;
4011 }
4012 break;
4013
4014 default:
4015 break;
4016 }
4017 }
4018
4019 return TRUE;
4020 }
4021
4022 /* Return the section that should be marked against GC for a given
4023 relocation. */
4024
4025 static asection *
4026 ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
4027 asection *sec;
4028 struct bfd_link_info *info ATTRIBUTE_UNUSED;
4029 Elf_Internal_Rela *rel;
4030 struct elf_link_hash_entry *h;
4031 Elf_Internal_Sym *sym;
4032 {
4033 asection *rsec = NULL;
4034
4035 if (h != NULL)
4036 {
4037 enum elf_ppc64_reloc_type r_type;
4038 struct ppc_link_hash_entry *fdh;
4039
4040 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4041 switch (r_type)
4042 {
4043 case R_PPC64_GNU_VTINHERIT:
4044 case R_PPC64_GNU_VTENTRY:
4045 break;
4046
4047 default:
4048 switch (h->root.type)
4049 {
4050 case bfd_link_hash_defined:
4051 case bfd_link_hash_defweak:
4052 fdh = (struct ppc_link_hash_entry *) h;
4053
4054 /* Function descriptor syms cause the associated
4055 function code sym section to be marked. */
4056 if (fdh->is_func_descriptor)
4057 rsec = fdh->oh->root.u.def.section;
4058
4059 /* Function entry syms return NULL if they are in .opd
4060 and are not ._start (or others undefined on the ld
4061 command line). Thus we avoid marking all function
4062 sections, as all functions are referenced in .opd. */
4063 else if ((fdh->oh != NULL
4064 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
4065 || ppc64_elf_section_data (sec)->opd.func_sec == NULL)
4066 rsec = h->root.u.def.section;
4067 break;
4068
4069 case bfd_link_hash_common:
4070 rsec = h->root.u.c.p->section;
4071 break;
4072
4073 default:
4074 break;
4075 }
4076 }
4077 }
4078 else
4079 {
4080 asection **opd_sym_section;
4081
4082 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4083 opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
4084 if (opd_sym_section != NULL)
4085 rsec = opd_sym_section[sym->st_value / 24];
4086 else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
4087 rsec = NULL;
4088 }
4089
4090 return rsec;
4091 }
4092
4093 /* Update the .got, .plt. and dynamic reloc reference counts for the
4094 section being removed. */
4095
4096 static bfd_boolean
4097 ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
4098 bfd *abfd;
4099 struct bfd_link_info *info;
4100 asection *sec;
4101 const Elf_Internal_Rela *relocs;
4102 {
4103 struct ppc_link_hash_table *htab;
4104 Elf_Internal_Shdr *symtab_hdr;
4105 struct elf_link_hash_entry **sym_hashes;
4106 struct got_entry **local_got_ents;
4107 const Elf_Internal_Rela *rel, *relend;
4108
4109 elf_section_data (sec)->local_dynrel = NULL;
4110
4111 htab = ppc_hash_table (info);
4112 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4113 sym_hashes = elf_sym_hashes (abfd);
4114 local_got_ents = elf_local_got_ents (abfd);
4115
4116 relend = relocs + sec->reloc_count;
4117 for (rel = relocs; rel < relend; rel++)
4118 {
4119 unsigned long r_symndx;
4120 enum elf_ppc64_reloc_type r_type;
4121 struct elf_link_hash_entry *h = NULL;
4122 char tls_type = 0;
4123
4124 r_symndx = ELF64_R_SYM (rel->r_info);
4125 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4126 if (r_symndx >= symtab_hdr->sh_info)
4127 {
4128 struct ppc_link_hash_entry *eh;
4129 struct ppc_dyn_relocs **pp;
4130 struct ppc_dyn_relocs *p;
4131
4132 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4133 eh = (struct ppc_link_hash_entry *) h;
4134
4135 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4136 if (p->sec == sec)
4137 {
4138 /* Everything must go for SEC. */
4139 *pp = p->next;
4140 break;
4141 }
4142 }
4143
4144 switch (r_type)
4145 {
4146 case R_PPC64_GOT_TLSLD16:
4147 case R_PPC64_GOT_TLSLD16_LO:
4148 case R_PPC64_GOT_TLSLD16_HI:
4149 case R_PPC64_GOT_TLSLD16_HA:
4150 htab->tlsld_got.refcount -= 1;
4151 tls_type = TLS_TLS | TLS_LD;
4152 goto dogot;
4153
4154 case R_PPC64_GOT_TLSGD16:
4155 case R_PPC64_GOT_TLSGD16_LO:
4156 case R_PPC64_GOT_TLSGD16_HI:
4157 case R_PPC64_GOT_TLSGD16_HA:
4158 tls_type = TLS_TLS | TLS_GD;
4159 goto dogot;
4160
4161 case R_PPC64_GOT_TPREL16_DS:
4162 case R_PPC64_GOT_TPREL16_LO_DS:
4163 case R_PPC64_GOT_TPREL16_HI:
4164 case R_PPC64_GOT_TPREL16_HA:
4165 tls_type = TLS_TLS | TLS_TPREL;
4166 goto dogot;
4167
4168 case R_PPC64_GOT_DTPREL16_DS:
4169 case R_PPC64_GOT_DTPREL16_LO_DS:
4170 case R_PPC64_GOT_DTPREL16_HI:
4171 case R_PPC64_GOT_DTPREL16_HA:
4172 tls_type = TLS_TLS | TLS_DTPREL;
4173 goto dogot;
4174
4175 case R_PPC64_GOT16:
4176 case R_PPC64_GOT16_DS:
4177 case R_PPC64_GOT16_HA:
4178 case R_PPC64_GOT16_HI:
4179 case R_PPC64_GOT16_LO:
4180 case R_PPC64_GOT16_LO_DS:
4181 dogot:
4182 {
4183 struct got_entry *ent;
4184
4185 if (h != NULL)
4186 ent = h->got.glist;
4187 else
4188 ent = local_got_ents[r_symndx];
4189
4190 for (; ent != NULL; ent = ent->next)
4191 if (ent->addend == rel->r_addend
4192 && ent->tls_type == tls_type)
4193 break;
4194 if (ent == NULL)
4195 abort ();
4196 if (ent->got.refcount > 0)
4197 ent->got.refcount -= 1;
4198 }
4199 break;
4200
4201 case R_PPC64_PLT16_HA:
4202 case R_PPC64_PLT16_HI:
4203 case R_PPC64_PLT16_LO:
4204 case R_PPC64_PLT32:
4205 case R_PPC64_PLT64:
4206 case R_PPC64_REL14:
4207 case R_PPC64_REL14_BRNTAKEN:
4208 case R_PPC64_REL14_BRTAKEN:
4209 case R_PPC64_REL24:
4210 if (h != NULL)
4211 {
4212 struct plt_entry *ent;
4213
4214 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4215 if (ent->addend == rel->r_addend)
4216 break;
4217 if (ent == NULL)
4218 abort ();
4219 if (ent->plt.refcount > 0)
4220 ent->plt.refcount -= 1;
4221 }
4222 break;
4223
4224 default:
4225 break;
4226 }
4227 }
4228 return TRUE;
4229 }
4230
4231 /* Called via elf_link_hash_traverse to transfer dynamic linking
4232 information on function code symbol entries to their corresponding
4233 function descriptor symbol entries. */
4234 static bfd_boolean
4235 func_desc_adjust (h, inf)
4236 struct elf_link_hash_entry *h;
4237 PTR inf;
4238 {
4239 struct bfd_link_info *info;
4240 struct ppc_link_hash_table *htab;
4241 struct plt_entry *ent;
4242
4243 if (h->root.type == bfd_link_hash_indirect)
4244 return TRUE;
4245
4246 if (h->root.type == bfd_link_hash_warning)
4247 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4248
4249 info = (struct bfd_link_info *) inf;
4250 htab = ppc_hash_table (info);
4251
4252 /* If this is a function code symbol, transfer dynamic linking
4253 information to the function descriptor symbol. */
4254 if (!((struct ppc_link_hash_entry *) h)->is_func)
4255 return TRUE;
4256
4257 if (h->root.type == bfd_link_hash_undefweak
4258 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
4259 htab->have_undefweak = TRUE;
4260
4261 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4262 if (ent->plt.refcount > 0)
4263 break;
4264 if (ent != NULL
4265 && h->root.root.string[0] == '.'
4266 && h->root.root.string[1] != '\0')
4267 {
4268 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
4269 bfd_boolean force_local;
4270
4271 /* Find the corresponding function descriptor symbol. Create it
4272 as undefined if necessary. */
4273
4274 if (fdh == NULL)
4275 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
4276 FALSE, FALSE, TRUE);
4277
4278 if (fdh == NULL
4279 && info->shared
4280 && (h->root.type == bfd_link_hash_undefined
4281 || h->root.type == bfd_link_hash_undefweak))
4282 {
4283 bfd *abfd;
4284 asymbol *newsym;
4285 struct bfd_link_hash_entry *bh;
4286
4287 abfd = h->root.u.undef.abfd;
4288 newsym = bfd_make_empty_symbol (abfd);
4289 newsym->name = h->root.root.string + 1;
4290 newsym->section = bfd_und_section_ptr;
4291 newsym->value = 0;
4292 newsym->flags = BSF_OBJECT;
4293 if (h->root.type == bfd_link_hash_undefweak)
4294 newsym->flags |= BSF_WEAK;
4295
4296 bh = &fdh->root;
4297 if ( !(_bfd_generic_link_add_one_symbol
4298 (info, abfd, newsym->name, newsym->flags,
4299 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4300 {
4301 return FALSE;
4302 }
4303 fdh = (struct elf_link_hash_entry *) bh;
4304 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4305 }
4306
4307 if (fdh != NULL
4308 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4309 && (info->shared
4310 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4311 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
4312 {
4313 if (fdh->dynindx == -1)
4314 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
4315 return FALSE;
4316 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
4317 & (ELF_LINK_HASH_REF_REGULAR
4318 | ELF_LINK_HASH_REF_DYNAMIC
4319 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4320 | ELF_LINK_NON_GOT_REF));
4321 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
4322 {
4323 fdh->plt.plist = h->plt.plist;
4324 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4325 }
4326 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
4327 ((struct ppc_link_hash_entry *) fdh)->oh = h;
4328 ((struct ppc_link_hash_entry *) h)->oh = fdh;
4329 }
4330
4331 /* Now that the info is on the function descriptor, clear the
4332 function code sym info. Any function code syms for which we
4333 don't have a definition in a regular file, we force local.
4334 This prevents a shared library from exporting syms that have
4335 been imported from another library. Function code syms that
4336 are really in the library we must leave global to prevent the
4337 linker dragging in a definition from a static library. */
4338 force_local = (info->shared
4339 && ((h->elf_link_hash_flags
4340 & ELF_LINK_HASH_DEF_REGULAR) == 0
4341 || fdh == NULL
4342 || (fdh->elf_link_hash_flags
4343 & ELF_LINK_HASH_DEF_REGULAR) == 0
4344 || (fdh->elf_link_hash_flags
4345 & ELF_LINK_FORCED_LOCAL) != 0));
4346 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4347 }
4348
4349 return TRUE;
4350 }
4351
4352 #define MIN_SAVE_FPR 14
4353 #define MAX_SAVE_FPR 31
4354
4355 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4356 this hook to a) provide some gcc support functions, and b) transfer
4357 dynamic linking information gathered so far on function code symbol
4358 entries, to their corresponding function descriptor symbol entries. */
4359 static bfd_boolean
4360 ppc64_elf_func_desc_adjust (obfd, info)
4361 bfd *obfd ATTRIBUTE_UNUSED;
4362 struct bfd_link_info *info;
4363 {
4364 struct ppc_link_hash_table *htab;
4365 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4366 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4367 unsigned int i;
4368 struct elf_link_hash_entry *h;
4369 bfd_byte *p;
4370 char sym[10];
4371
4372 htab = ppc_hash_table (info);
4373
4374 if (htab->sfpr == NULL)
4375 /* We don't have any relocs. */
4376 return TRUE;
4377
4378 /* First provide any missing ._savef* and ._restf* functions. */
4379 memcpy (sym, "._savef14", 10);
4380 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4381 {
4382 sym[7] = i / 10 + '0';
4383 sym[8] = i % 10 + '0';
4384 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4385 if (h != NULL
4386 && h->root.type == bfd_link_hash_undefined)
4387 {
4388 if (lowest_savef > i)
4389 lowest_savef = i;
4390 h->root.type = bfd_link_hash_defined;
4391 h->root.u.def.section = htab->sfpr;
4392 h->root.u.def.value = (i - lowest_savef) * 4;
4393 h->type = STT_FUNC;
4394 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4395 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
4396 }
4397 }
4398
4399 memcpy (sym, "._restf14", 10);
4400 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4401 {
4402 sym[7] = i / 10 + '0';
4403 sym[8] = i % 10 + '0';
4404 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4405 if (h != NULL
4406 && h->root.type == bfd_link_hash_undefined)
4407 {
4408 if (lowest_restf > i)
4409 lowest_restf = i;
4410 h->root.type = bfd_link_hash_defined;
4411 h->root.u.def.section = htab->sfpr;
4412 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4413 + (i - lowest_restf) * 4);
4414 h->type = STT_FUNC;
4415 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4416 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
4417 }
4418 }
4419
4420 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
4421
4422 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4423 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4424
4425 if (htab->sfpr->_raw_size == 0)
4426 {
4427 if (!htab->have_undefweak)
4428 {
4429 _bfd_strip_section_from_output (info, htab->sfpr);
4430 return TRUE;
4431 }
4432
4433 htab->sfpr->_raw_size = 4;
4434 }
4435
4436 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
4437 if (p == NULL)
4438 return FALSE;
4439 htab->sfpr->contents = p;
4440
4441 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4442 {
4443 unsigned int fpr = i << 21;
4444 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4445 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4446 p += 4;
4447 }
4448 if (lowest_savef <= MAX_SAVE_FPR)
4449 {
4450 bfd_put_32 (htab->elf.dynobj, BLR, p);
4451 p += 4;
4452 }
4453
4454 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4455 {
4456 unsigned int fpr = i << 21;
4457 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4458 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4459 p += 4;
4460 }
4461 if (lowest_restf <= MAX_SAVE_FPR
4462 || htab->sfpr->_raw_size == 4)
4463 {
4464 bfd_put_32 (htab->elf.dynobj, BLR, p);
4465 }
4466
4467 return TRUE;
4468 }
4469
4470 /* Adjust a symbol defined by a dynamic object and referenced by a
4471 regular object. The current definition is in some section of the
4472 dynamic object, but we're not including those sections. We have to
4473 change the definition to something the rest of the link can
4474 understand. */
4475
4476 static bfd_boolean
4477 ppc64_elf_adjust_dynamic_symbol (info, h)
4478 struct bfd_link_info *info;
4479 struct elf_link_hash_entry *h;
4480 {
4481 struct ppc_link_hash_table *htab;
4482 asection *s;
4483 unsigned int power_of_two;
4484
4485 htab = ppc_hash_table (info);
4486
4487 /* Deal with function syms. */
4488 if (h->type == STT_FUNC
4489 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4490 {
4491 /* Clear procedure linkage table information for any symbol that
4492 won't need a .plt entry. */
4493 struct plt_entry *ent;
4494 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4495 if (ent->plt.refcount > 0)
4496 break;
4497 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4498 || ent == NULL
4499 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
4500 || (! info->shared
4501 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
4502 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
4503 {
4504 h->plt.plist = NULL;
4505 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4506 }
4507 return TRUE;
4508 }
4509 else
4510 h->plt.plist = NULL;
4511
4512 /* If this is a weak symbol, and there is a real definition, the
4513 processor independent code will have arranged for us to see the
4514 real definition first, and we can just use the same value. */
4515 if (h->weakdef != NULL)
4516 {
4517 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4518 || h->weakdef->root.type == bfd_link_hash_defweak);
4519 h->root.u.def.section = h->weakdef->root.u.def.section;
4520 h->root.u.def.value = h->weakdef->root.u.def.value;
4521 if (ELIMINATE_COPY_RELOCS)
4522 h->elf_link_hash_flags
4523 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4524 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4525 return TRUE;
4526 }
4527
4528 /* This is a reference to a symbol defined by a dynamic object which
4529 is not a function. */
4530
4531 /* If we are creating a shared library, we must presume that the
4532 only references to the symbol are via the global offset table.
4533 For such cases we need not do anything here; the relocations will
4534 be handled correctly by relocate_section. */
4535 if (info->shared)
4536 return TRUE;
4537
4538 /* If there are no references to this symbol that do not use the
4539 GOT, we don't need to generate a copy reloc. */
4540 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4541 return TRUE;
4542
4543 if (ELIMINATE_COPY_RELOCS)
4544 {
4545 struct ppc_link_hash_entry * eh;
4546 struct ppc_dyn_relocs *p;
4547
4548 eh = (struct ppc_link_hash_entry *) h;
4549 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4550 {
4551 s = p->sec->output_section;
4552 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4553 break;
4554 }
4555
4556 /* If we didn't find any dynamic relocs in read-only sections, then
4557 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4558 if (p == NULL)
4559 {
4560 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4561 return TRUE;
4562 }
4563 }
4564
4565 /* We must allocate the symbol in our .dynbss section, which will
4566 become part of the .bss section of the executable. There will be
4567 an entry for this symbol in the .dynsym section. The dynamic
4568 object will contain position independent code, so all references
4569 from the dynamic object to this symbol will go through the global
4570 offset table. The dynamic linker will use the .dynsym entry to
4571 determine the address it must put in the global offset table, so
4572 both the dynamic object and the regular object will refer to the
4573 same memory location for the variable. */
4574
4575 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4576 to copy the initial value out of the dynamic object and into the
4577 runtime process image. We need to remember the offset into the
4578 .rela.bss section we are going to use. */
4579 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4580 {
4581 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
4582 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4583 }
4584
4585 /* We need to figure out the alignment required for this symbol. I
4586 have no idea how ELF linkers handle this. */
4587 power_of_two = bfd_log2 (h->size);
4588 if (power_of_two > 4)
4589 power_of_two = 4;
4590
4591 /* Apply the required alignment. */
4592 s = htab->sdynbss;
4593 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
4594 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4595 {
4596 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4597 return FALSE;
4598 }
4599
4600 /* Define the symbol as being at this point in the section. */
4601 h->root.u.def.section = s;
4602 h->root.u.def.value = s->_raw_size;
4603
4604 /* Increment the section size to make room for the symbol. */
4605 s->_raw_size += h->size;
4606
4607 return TRUE;
4608 }
4609
4610 /* If given a function descriptor symbol, hide both the function code
4611 sym and the descriptor. */
4612 static void
4613 ppc64_elf_hide_symbol (info, h, force_local)
4614 struct bfd_link_info *info;
4615 struct elf_link_hash_entry *h;
4616 bfd_boolean force_local;
4617 {
4618 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4619
4620 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
4621 {
4622 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
4623
4624 if (fh == NULL)
4625 {
4626 const char *p, *q;
4627 struct ppc_link_hash_table *htab;
4628 char save;
4629
4630 /* We aren't supposed to use alloca in BFD because on
4631 systems which do not have alloca the version in libiberty
4632 calls xmalloc, which might cause the program to crash
4633 when it runs out of memory. This function doesn't have a
4634 return status, so there's no way to gracefully return an
4635 error. So cheat. We know that string[-1] can be safely
4636 dereferenced; It's either a string in an ELF string
4637 table, or allocated in an objalloc structure. */
4638
4639 p = h->root.root.string - 1;
4640 save = *p;
4641 *(char *) p = '.';
4642 htab = ppc_hash_table (info);
4643 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4644 *(char *) p = save;
4645
4646 /* Unfortunately, if it so happens that the string we were
4647 looking for was allocated immediately before this string,
4648 then we overwrote the string terminator. That's the only
4649 reason the lookup should fail. */
4650 if (fh == NULL)
4651 {
4652 q = h->root.root.string + strlen (h->root.root.string);
4653 while (q >= h->root.root.string && *q == *p)
4654 --q, --p;
4655 if (q < h->root.root.string && *p == '.')
4656 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4657 }
4658 if (fh != NULL)
4659 {
4660 ((struct ppc_link_hash_entry *) h)->oh = fh;
4661 ((struct ppc_link_hash_entry *) fh)->oh = h;
4662 }
4663 }
4664 if (fh != NULL)
4665 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
4666 }
4667 }
4668
4669 static bfd_boolean
4670 get_sym_h (hp, symp, symsecp, tls_maskp, locsymsp, r_symndx, ibfd)
4671 struct elf_link_hash_entry **hp;
4672 Elf_Internal_Sym **symp;
4673 asection **symsecp;
4674 char **tls_maskp;
4675 Elf_Internal_Sym **locsymsp;
4676 unsigned long r_symndx;
4677 bfd *ibfd;
4678 {
4679 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4680
4681 if (r_symndx >= symtab_hdr->sh_info)
4682 {
4683 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4684 struct elf_link_hash_entry *h;
4685
4686 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4687 while (h->root.type == bfd_link_hash_indirect
4688 || h->root.type == bfd_link_hash_warning)
4689 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4690
4691 if (hp != NULL)
4692 *hp = h;
4693
4694 if (symp != NULL)
4695 *symp = NULL;
4696
4697 if (symsecp != NULL)
4698 {
4699 asection *symsec = NULL;
4700 if (h->root.type == bfd_link_hash_defined
4701 || h->root.type == bfd_link_hash_defweak)
4702 symsec = h->root.u.def.section;
4703 *symsecp = symsec;
4704 }
4705
4706 if (tls_maskp != NULL)
4707 {
4708 struct ppc_link_hash_entry *eh;
4709
4710 eh = (struct ppc_link_hash_entry *) h;
4711 *tls_maskp = &eh->tls_mask;
4712 }
4713 }
4714 else
4715 {
4716 Elf_Internal_Sym *sym;
4717 Elf_Internal_Sym *locsyms = *locsymsp;
4718
4719 if (locsyms == NULL)
4720 {
4721 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4722 if (locsyms == NULL)
4723 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4724 symtab_hdr->sh_info,
4725 0, NULL, NULL, NULL);
4726 if (locsyms == NULL)
4727 return FALSE;
4728 *locsymsp = locsyms;
4729 }
4730 sym = locsyms + r_symndx;
4731
4732 if (hp != NULL)
4733 *hp = NULL;
4734
4735 if (symp != NULL)
4736 *symp = sym;
4737
4738 if (symsecp != NULL)
4739 {
4740 asection *symsec = NULL;
4741 if ((sym->st_shndx != SHN_UNDEF
4742 && sym->st_shndx < SHN_LORESERVE)
4743 || sym->st_shndx > SHN_HIRESERVE)
4744 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4745 *symsecp = symsec;
4746 }
4747
4748 if (tls_maskp != NULL)
4749 {
4750 struct got_entry **lgot_ents;
4751 char *tls_mask;
4752
4753 tls_mask = NULL;
4754 lgot_ents = elf_local_got_ents (ibfd);
4755 if (lgot_ents != NULL)
4756 {
4757 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4758 tls_mask = &lgot_masks[r_symndx];
4759 }
4760 *tls_maskp = tls_mask;
4761 }
4762 }
4763 return TRUE;
4764 }
4765
4766 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4767 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4768 type suitable for optimization, and 1 otherwise. */
4769
4770 static int
4771 get_tls_mask (tls_maskp, locsymsp, rel, ibfd)
4772 char **tls_maskp;
4773 Elf_Internal_Sym **locsymsp;
4774 const Elf_Internal_Rela *rel;
4775 bfd *ibfd;
4776 {
4777 unsigned long r_symndx;
4778 unsigned int next_r;
4779 struct elf_link_hash_entry *h;
4780 Elf_Internal_Sym *sym;
4781 asection *sec;
4782 bfd_vma off;
4783
4784 r_symndx = ELF64_R_SYM (rel->r_info);
4785 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4786 return 0;
4787
4788 if ((*tls_maskp != NULL && **tls_maskp != 0)
4789 || sec == NULL
4790 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4791 return 1;
4792
4793 /* Look inside a TOC section too. */
4794 if (h != NULL)
4795 {
4796 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4797 off = h->root.u.def.value;
4798 }
4799 else
4800 off = sym->st_value;
4801 off += rel->r_addend;
4802 BFD_ASSERT (off % 8 == 0);
4803 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4804 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4805 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4806 return 0;
4807 if (h == NULL
4808 || h->root.type == bfd_link_hash_defined
4809 || h->root.type == bfd_link_hash_defweak)
4810 {
4811 if (next_r == (unsigned) -1)
4812 return 2;
4813 if (next_r == (unsigned) -2
4814 && (h == NULL
4815 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4816 return 3;
4817 }
4818 return 1;
4819 }
4820
4821 bfd_boolean
4822 ppc64_elf_edit_opd (obfd, info)
4823 bfd *obfd;
4824 struct bfd_link_info *info;
4825 {
4826 bfd *ibfd;
4827
4828 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4829 {
4830 asection *sec;
4831 Elf_Internal_Rela *relstart, *rel, *relend;
4832 Elf_Internal_Shdr *symtab_hdr;
4833 Elf_Internal_Sym *local_syms;
4834 struct elf_link_hash_entry **sym_hashes;
4835 bfd_vma offset;
4836 bfd_size_type amt;
4837 long *adjust;
4838 bfd_boolean need_edit;
4839
4840 sec = bfd_get_section_by_name (ibfd, ".opd");
4841 if (sec == NULL)
4842 continue;
4843
4844 amt = sec->_raw_size * sizeof (long) / 24;
4845 adjust = ppc64_elf_section_data (sec)->opd.adjust;
4846 if (adjust == NULL)
4847 {
4848 /* Must be a ld -r link. ie. check_relocs hasn't been
4849 called. */
4850 adjust = (long *) bfd_zalloc (obfd, amt);
4851 ppc64_elf_section_data (sec)->opd.adjust = adjust;
4852 }
4853 memset (adjust, 0, (size_t) amt);
4854
4855 if (sec->output_section == bfd_abs_section_ptr)
4856 continue;
4857
4858 /* Look through the section relocs. */
4859 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
4860 continue;
4861
4862 local_syms = NULL;
4863 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4864 sym_hashes = elf_sym_hashes (ibfd);
4865
4866 /* Read the relocations. */
4867 relstart = _bfd_elf64_link_read_relocs (ibfd, sec, (PTR) NULL,
4868 (Elf_Internal_Rela *) NULL,
4869 info->keep_memory);
4870 if (relstart == NULL)
4871 return FALSE;
4872
4873 /* First run through the relocs to check they are sane, and to
4874 determine whether we need to edit this opd section. */
4875 need_edit = FALSE;
4876 offset = 0;
4877 relend = relstart + sec->reloc_count;
4878 for (rel = relstart; rel < relend; rel++)
4879 {
4880 enum elf_ppc64_reloc_type r_type;
4881 unsigned long r_symndx;
4882 asection *sym_sec;
4883 struct elf_link_hash_entry *h;
4884 Elf_Internal_Sym *sym;
4885
4886 /* .opd contains a regular array of 24 byte entries. We're
4887 only interested in the reloc pointing to a function entry
4888 point. */
4889 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
4890 if (r_type == R_PPC64_TOC)
4891 continue;
4892
4893 if (r_type != R_PPC64_ADDR64)
4894 {
4895 (*_bfd_error_handler)
4896 (_("%s: unexpected reloc type %u in .opd section"),
4897 bfd_archive_filename (ibfd), r_type);
4898 need_edit = FALSE;
4899 break;
4900 }
4901
4902 if (rel + 1 >= relend)
4903 continue;
4904 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
4905 if (r_type != R_PPC64_TOC)
4906 continue;
4907
4908 if (rel->r_offset != offset)
4909 {
4910 /* If someone messes with .opd alignment then after a
4911 "ld -r" we might have padding in the middle of .opd.
4912 Also, there's nothing to prevent someone putting
4913 something silly in .opd with the assembler. No .opd
4914 optimization for them! */
4915 (*_bfd_error_handler)
4916 (_("%s: .opd is not a regular array of opd entries"),
4917 bfd_archive_filename (ibfd));
4918 need_edit = FALSE;
4919 break;
4920 }
4921
4922 r_symndx = ELF64_R_SYM (rel->r_info);
4923 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
4924 r_symndx, ibfd))
4925 goto error_free_rel;
4926
4927 if (sym_sec == NULL || sym_sec->owner == NULL)
4928 {
4929 const char *sym_name;
4930 if (h != NULL)
4931 sym_name = h->root.root.string;
4932 else
4933 sym_name = bfd_elf_local_sym_name (ibfd, sym);
4934
4935 (*_bfd_error_handler)
4936 (_("%s: undefined sym `%s' in .opd section"),
4937 bfd_archive_filename (ibfd),
4938 sym_name);
4939 need_edit = FALSE;
4940 break;
4941 }
4942
4943 /* opd entries are always for functions defined in the
4944 current input bfd. If the symbol isn't defined in the
4945 input bfd, then we won't be using the function in this
4946 bfd; It must be defined in a linkonce section in another
4947 bfd, or is weak. It's also possible that we are
4948 discarding the function due to a linker script /DISCARD/,
4949 which we test for via the output_section. */
4950 if (sym_sec->owner != ibfd
4951 || sym_sec->output_section == bfd_abs_section_ptr)
4952 need_edit = TRUE;
4953
4954 offset += 24;
4955 }
4956
4957 if (need_edit)
4958 {
4959 Elf_Internal_Rela *write_rel;
4960 bfd_byte *rptr, *wptr;
4961 bfd_boolean skip;
4962
4963 /* This seems a waste of time as input .opd sections are all
4964 zeros as generated by gcc, but I suppose there's no reason
4965 this will always be so. We might start putting something in
4966 the third word of .opd entries. */
4967 if ((sec->flags & SEC_IN_MEMORY) == 0)
4968 {
4969 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
4970 if (loc == NULL
4971 || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
4972 sec->_raw_size))
4973 {
4974 if (local_syms != NULL
4975 && symtab_hdr->contents != (unsigned char *) local_syms)
4976 free (local_syms);
4977 error_free_rel:
4978 if (elf_section_data (sec)->relocs != relstart)
4979 free (relstart);
4980 return FALSE;
4981 }
4982 sec->contents = loc;
4983 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
4984 }
4985
4986 elf_section_data (sec)->relocs = relstart;
4987
4988 wptr = sec->contents;
4989 rptr = sec->contents;
4990 write_rel = relstart;
4991 skip = FALSE;
4992 offset = 0;
4993 for (rel = relstart; rel < relend; rel++)
4994 {
4995 if (rel->r_offset == offset)
4996 {
4997 unsigned long r_symndx;
4998 asection *sym_sec;
4999 struct elf_link_hash_entry *h;
5000 Elf_Internal_Sym *sym;
5001
5002 r_symndx = ELF64_R_SYM (rel->r_info);
5003 get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5004 r_symndx, ibfd);
5005
5006 skip = (sym_sec->owner != ibfd
5007 || sym_sec->output_section == bfd_abs_section_ptr);
5008 if (skip)
5009 {
5010 if (h != NULL && sym_sec->owner == ibfd)
5011 {
5012 /* Arrange for the function descriptor sym
5013 to be dropped. */
5014 struct ppc_link_hash_entry *fdh;
5015 struct ppc_link_hash_entry *fh;
5016
5017 fh = (struct ppc_link_hash_entry *) h;
5018 fdh = (struct ppc_link_hash_entry *) fh->oh;
5019 if (fdh == NULL)
5020 {
5021 const char *fd_name;
5022 struct ppc_link_hash_table *htab;
5023
5024 fd_name = h->root.root.string + 1;
5025 htab = ppc_hash_table (info);
5026 fdh = (struct ppc_link_hash_entry *)
5027 elf_link_hash_lookup (&htab->elf, fd_name,
5028 FALSE, FALSE, FALSE);
5029 fdh->is_func_descriptor = 1;
5030 fdh->oh = &fh->elf;
5031 fh->is_func = 1;
5032 fh->oh = &fdh->elf;
5033 }
5034
5035 fdh->elf.root.u.def.value = 0;
5036 fdh->elf.root.u.def.section = sym_sec;
5037 }
5038 }
5039 else
5040 {
5041 /* We'll be keeping this opd entry. */
5042
5043 if (h != NULL)
5044 {
5045 /* Redefine the function descriptor symbol
5046 to this location in the opd section.
5047 We've checked above that opd relocs are
5048 ordered. */
5049 struct ppc_link_hash_entry *fdh;
5050 struct ppc_link_hash_entry *fh;
5051
5052 fh = (struct ppc_link_hash_entry *) h;
5053 fdh = (struct ppc_link_hash_entry *) fh->oh;
5054 if (fdh == NULL)
5055 {
5056 const char *fd_name;
5057 struct ppc_link_hash_table *htab;
5058
5059 fd_name = h->root.root.string + 1;
5060 htab = ppc_hash_table (info);
5061 fdh = (struct ppc_link_hash_entry *)
5062 elf_link_hash_lookup (&htab->elf, fd_name,
5063 FALSE, FALSE, FALSE);
5064 fdh->is_func_descriptor = 1;
5065 fdh->oh = &fh->elf;
5066 fh->is_func = 1;
5067 fh->oh = &fdh->elf;
5068 }
5069
5070 fdh->elf.root.u.def.value = wptr - sec->contents;
5071 }
5072 else
5073 {
5074 /* Local syms are a bit tricky. We could
5075 tweak them as they can be cached, but
5076 we'd need to look through the local syms
5077 for the function descriptor sym which we
5078 don't have at the moment. So keep an
5079 array of adjustments. */
5080 adjust[rel->r_offset / 24] = wptr - rptr;
5081 }
5082
5083 if (wptr != rptr)
5084 memcpy (wptr, rptr, 24);
5085 wptr += 24;
5086 }
5087 rptr += 24;
5088 offset += 24;
5089 }
5090
5091 /* We need to adjust any reloc offsets to point to the
5092 new opd entries. While we're at it, we may as well
5093 remove redundant relocs. */
5094 if (!skip)
5095 {
5096 rel->r_offset += wptr - rptr;
5097 if (write_rel != rel)
5098 memcpy (write_rel, rel, sizeof (*rel));
5099 ++write_rel;
5100 }
5101 }
5102
5103 sec->_cooked_size = wptr - sec->contents;
5104 sec->reloc_count = write_rel - relstart;
5105 /* Fudge the size too, as this is used later in
5106 elf_bfd_final_link if we are emitting relocs. */
5107 elf_section_data (sec)->rel_hdr.sh_size
5108 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5109 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5110 }
5111 else if (elf_section_data (sec)->relocs != relstart)
5112 free (relstart);
5113
5114 if (local_syms != NULL
5115 && symtab_hdr->contents != (unsigned char *) local_syms)
5116 {
5117 if (!info->keep_memory)
5118 free (local_syms);
5119 else
5120 symtab_hdr->contents = (unsigned char *) local_syms;
5121 }
5122 }
5123
5124 return TRUE;
5125 }
5126
5127 /* Set htab->tls_sec. */
5128
5129 bfd_boolean
5130 ppc64_elf_tls_setup (obfd, info)
5131 bfd *obfd;
5132 struct bfd_link_info *info;
5133 {
5134 asection *tls;
5135 struct ppc_link_hash_table *htab;
5136
5137 for (tls = obfd->sections; tls != NULL; tls = tls->next)
5138 if ((tls->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
5139 == (SEC_THREAD_LOCAL | SEC_LOAD))
5140 break;
5141
5142 htab = ppc_hash_table (info);
5143 htab->tls_sec = tls;
5144
5145 if (htab->tls_get_addr != NULL)
5146 {
5147 struct elf_link_hash_entry *h = htab->tls_get_addr;
5148
5149 while (h->root.type == bfd_link_hash_indirect
5150 || h->root.type == bfd_link_hash_warning)
5151 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5152
5153 htab->tls_get_addr = h;
5154 }
5155
5156 return tls != NULL;
5157 }
5158
5159 /* Run through all the TLS relocs looking for optimization
5160 opportunities. The linker has been hacked (see ppc64elf.em) to do
5161 a preliminary section layout so that we know the TLS segment
5162 offsets. We can't optimize earlier because some optimizations need
5163 to know the tp offset, and we need to optimize before allocating
5164 dynamic relocations. */
5165
5166 bfd_boolean
5167 ppc64_elf_tls_optimize (obfd, info)
5168 bfd *obfd ATTRIBUTE_UNUSED;
5169 struct bfd_link_info *info;
5170 {
5171 bfd *ibfd;
5172 asection *sec;
5173 struct ppc_link_hash_table *htab;
5174
5175 if (info->relocateable || info->shared)
5176 return TRUE;
5177
5178 htab = ppc_hash_table (info);
5179 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5180 {
5181 Elf_Internal_Sym *locsyms = NULL;
5182
5183 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5184 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5185 {
5186 Elf_Internal_Rela *relstart, *rel, *relend;
5187 int expecting_tls_get_addr;
5188
5189 /* Read the relocations. */
5190 relstart = _bfd_elf64_link_read_relocs (ibfd, sec, (PTR) NULL,
5191 (Elf_Internal_Rela *) NULL,
5192 info->keep_memory);
5193 if (relstart == NULL)
5194 return FALSE;
5195
5196 expecting_tls_get_addr = 0;
5197 relend = relstart + sec->reloc_count;
5198 for (rel = relstart; rel < relend; rel++)
5199 {
5200 enum elf_ppc64_reloc_type r_type;
5201 unsigned long r_symndx;
5202 struct elf_link_hash_entry *h;
5203 Elf_Internal_Sym *sym;
5204 asection *sym_sec;
5205 char *tls_mask;
5206 char tls_set, tls_clear, tls_type = 0;
5207 bfd_vma value;
5208 bfd_boolean ok_tprel, is_local;
5209
5210 r_symndx = ELF64_R_SYM (rel->r_info);
5211 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5212 r_symndx, ibfd))
5213 {
5214 err_free_rel:
5215 if (elf_section_data (sec)->relocs != relstart)
5216 free (relstart);
5217 if (locsyms != NULL
5218 && (elf_tdata (ibfd)->symtab_hdr.contents
5219 != (unsigned char *) locsyms))
5220 free (locsyms);
5221 return FALSE;
5222 }
5223
5224 if (h != NULL)
5225 {
5226 if (h->root.type != bfd_link_hash_defined
5227 && h->root.type != bfd_link_hash_defweak)
5228 continue;
5229 value = h->root.u.def.value;
5230 }
5231 else
5232 value = sym->st_value;
5233
5234 ok_tprel = FALSE;
5235 is_local = FALSE;
5236 if (h == NULL
5237 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5238 {
5239 is_local = TRUE;
5240 value += sym_sec->output_offset;
5241 value += sym_sec->output_section->vma;
5242 value -= htab->tls_sec->vma;
5243 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5244 < (bfd_vma) 1 << 32);
5245 }
5246
5247 r_type
5248 = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
5249 switch (r_type)
5250 {
5251 case R_PPC64_GOT_TLSLD16:
5252 case R_PPC64_GOT_TLSLD16_LO:
5253 case R_PPC64_GOT_TLSLD16_HI:
5254 case R_PPC64_GOT_TLSLD16_HA:
5255 /* These relocs should never be against a symbol
5256 defined in a shared lib. Leave them alone if
5257 that turns out to be the case. */
5258 htab->tlsld_got.refcount -= 1;
5259 if (!is_local)
5260 continue;
5261
5262 /* LD -> LE */
5263 tls_set = 0;
5264 tls_clear = TLS_LD;
5265 tls_type = TLS_TLS | TLS_LD;
5266 expecting_tls_get_addr = 1;
5267 break;
5268
5269 case R_PPC64_GOT_TLSGD16:
5270 case R_PPC64_GOT_TLSGD16_LO:
5271 case R_PPC64_GOT_TLSGD16_HI:
5272 case R_PPC64_GOT_TLSGD16_HA:
5273 if (ok_tprel)
5274 /* GD -> LE */
5275 tls_set = 0;
5276 else
5277 /* GD -> IE */
5278 tls_set = TLS_TLS | TLS_TPRELGD;
5279 tls_clear = TLS_GD;
5280 tls_type = TLS_TLS | TLS_GD;
5281 expecting_tls_get_addr = 1;
5282 break;
5283
5284 case R_PPC64_GOT_TPREL16_DS:
5285 case R_PPC64_GOT_TPREL16_LO_DS:
5286 case R_PPC64_GOT_TPREL16_HI:
5287 case R_PPC64_GOT_TPREL16_HA:
5288 expecting_tls_get_addr = 0;
5289 if (ok_tprel)
5290 {
5291 /* IE -> LE */
5292 tls_set = 0;
5293 tls_clear = TLS_TPREL;
5294 tls_type = TLS_TLS | TLS_TPREL;
5295 break;
5296 }
5297 else
5298 continue;
5299
5300 case R_PPC64_REL14:
5301 case R_PPC64_REL14_BRTAKEN:
5302 case R_PPC64_REL14_BRNTAKEN:
5303 case R_PPC64_REL24:
5304 if (h != NULL
5305 && h == htab->tls_get_addr)
5306 {
5307 if (!expecting_tls_get_addr
5308 && rel != relstart
5309 && ((ELF64_R_TYPE (rel[-1].r_info)
5310 == R_PPC64_TOC16)
5311 || (ELF64_R_TYPE (rel[-1].r_info)
5312 == R_PPC64_TOC16_LO)))
5313 {
5314 /* Check for toc tls entries. */
5315 char *toc_tls;
5316 int retval;
5317
5318 retval = get_tls_mask (&toc_tls, &locsyms,
5319 rel - 1, ibfd);
5320 if (retval == 0)
5321 goto err_free_rel;
5322 if (toc_tls != NULL)
5323 expecting_tls_get_addr = retval > 1;
5324 }
5325
5326 if (expecting_tls_get_addr)
5327 {
5328 struct plt_entry *ent;
5329 for (ent = h->plt.plist; ent; ent = ent->next)
5330 if (ent->addend == 0)
5331 {
5332 if (ent->plt.refcount > 0)
5333 ent->plt.refcount -= 1;
5334 break;
5335 }
5336 }
5337 }
5338 expecting_tls_get_addr = 0;
5339 continue;
5340
5341 case R_PPC64_TPREL64:
5342 expecting_tls_get_addr = 0;
5343 if (ok_tprel)
5344 {
5345 /* IE -> LE */
5346 tls_set = TLS_EXPLICIT;
5347 tls_clear = TLS_TPREL;
5348 break;
5349 }
5350 else
5351 continue;
5352
5353 case R_PPC64_DTPMOD64:
5354 expecting_tls_get_addr = 0;
5355 if (rel + 1 < relend
5356 && (rel[1].r_info
5357 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5358 && rel[1].r_offset == rel->r_offset + 8)
5359 {
5360 if (ok_tprel)
5361 /* GD -> LE */
5362 tls_set = TLS_EXPLICIT | TLS_GD;
5363 else
5364 /* GD -> IE */
5365 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5366 tls_clear = TLS_GD;
5367 }
5368 else
5369 {
5370 if (!is_local)
5371 continue;
5372
5373 /* LD -> LE */
5374 tls_set = TLS_EXPLICIT;
5375 tls_clear = TLS_LD;
5376 }
5377 break;
5378
5379 default:
5380 expecting_tls_get_addr = 0;
5381 continue;
5382 }
5383
5384 if ((tls_set & TLS_EXPLICIT) == 0)
5385 {
5386 struct got_entry *ent;
5387
5388 /* Adjust got entry for this reloc. */
5389 if (h != NULL)
5390 ent = h->got.glist;
5391 else
5392 ent = elf_local_got_ents (ibfd)[r_symndx];
5393
5394 for (; ent != NULL; ent = ent->next)
5395 if (ent->addend == rel->r_addend
5396 && ent->tls_type == tls_type)
5397 break;
5398 if (ent == NULL)
5399 abort ();
5400
5401 if (tls_set == 0)
5402 {
5403 /* We managed to get rid of a got entry. */
5404 if (ent->got.refcount > 0)
5405 ent->got.refcount -= 1;
5406 }
5407 }
5408 else if (h != NULL)
5409 {
5410 struct ppc_link_hash_entry * eh;
5411 struct ppc_dyn_relocs **pp;
5412 struct ppc_dyn_relocs *p;
5413
5414 /* Adjust dynamic relocs. */
5415 eh = (struct ppc_link_hash_entry *) h;
5416 for (pp = &eh->dyn_relocs;
5417 (p = *pp) != NULL;
5418 pp = &p->next)
5419 if (p->sec == sec)
5420 {
5421 /* If we got rid of a DTPMOD/DTPREL reloc
5422 pair then we'll lose one or two dyn
5423 relocs. */
5424 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5425 p->count -= 1;
5426 p->count -= 1;
5427 if (p->count == 0)
5428 *pp = p->next;
5429 break;
5430 }
5431 }
5432
5433 *tls_mask |= tls_set;
5434 *tls_mask &= ~tls_clear;
5435 }
5436
5437 if (elf_section_data (sec)->relocs != relstart)
5438 free (relstart);
5439 }
5440
5441 if (locsyms != NULL
5442 && (elf_tdata (ibfd)->symtab_hdr.contents
5443 != (unsigned char *) locsyms))
5444 {
5445 if (!info->keep_memory)
5446 free (locsyms);
5447 else
5448 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5449 }
5450 }
5451 return TRUE;
5452 }
5453
5454 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5455 will be called from elflink.h. If elflink.h doesn't call our
5456 finish_dynamic_symbol routine, we'll need to do something about
5457 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5458 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
5459 ((DYN) \
5460 && ((SHARED) \
5461 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5462 && ((H)->dynindx != -1 \
5463 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5464
5465 /* Allocate space in .plt, .got and associated reloc sections for
5466 dynamic relocs. */
5467
5468 static bfd_boolean
5469 allocate_dynrelocs (h, inf)
5470 struct elf_link_hash_entry *h;
5471 PTR inf;
5472 {
5473 struct bfd_link_info *info;
5474 struct ppc_link_hash_table *htab;
5475 asection *s;
5476 struct ppc_link_hash_entry *eh;
5477 struct ppc_dyn_relocs *p;
5478 struct got_entry *gent;
5479
5480 if (h->root.type == bfd_link_hash_indirect)
5481 return TRUE;
5482
5483 if (h->root.type == bfd_link_hash_warning)
5484 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5485
5486 info = (struct bfd_link_info *) inf;
5487 htab = ppc_hash_table (info);
5488
5489 if (htab->elf.dynamic_sections_created
5490 && h->dynindx != -1
5491 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5492 {
5493 struct plt_entry *pent;
5494 bfd_boolean doneone = FALSE;
5495 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5496 if (pent->plt.refcount > 0)
5497 {
5498 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5499
5500 /* If this is the first .plt entry, make room for the special
5501 first entry. */
5502 s = htab->splt;
5503 if (s->_raw_size == 0)
5504 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
5505
5506 pent->plt.offset = s->_raw_size;
5507
5508 /* Make room for this entry. */
5509 s->_raw_size += PLT_ENTRY_SIZE;
5510
5511 /* Make room for the .glink code. */
5512 s = htab->sglink;
5513 if (s->_raw_size == 0)
5514 s->_raw_size += GLINK_CALL_STUB_SIZE;
5515 /* We need bigger stubs past index 32767. */
5516 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5517 s->_raw_size += 4;
5518 s->_raw_size += 2*4;
5519
5520 /* We also need to make an entry in the .rela.plt section. */
5521 s = htab->srelplt;
5522 s->_raw_size += sizeof (Elf64_External_Rela);
5523 doneone = TRUE;
5524 }
5525 else
5526 pent->plt.offset = (bfd_vma) -1;
5527 if (!doneone)
5528 {
5529 h->plt.plist = NULL;
5530 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5531 }
5532 }
5533 else
5534 {
5535 h->plt.plist = NULL;
5536 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5537 }
5538
5539 eh = (struct ppc_link_hash_entry *) h;
5540 /* Run through the TLS GD got entries first if we're changing them
5541 to TPREL. */
5542 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5543 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5544 if (gent->got.refcount > 0
5545 && (gent->tls_type & TLS_GD) != 0)
5546 {
5547 /* This was a GD entry that has been converted to TPREL. If
5548 there happens to be a TPREL entry we can use that one. */
5549 struct got_entry *ent;
5550 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5551 if (ent->got.refcount > 0
5552 && (ent->tls_type & TLS_TPREL) != 0
5553 && ent->addend == gent->addend)
5554 {
5555 gent->got.refcount = 0;
5556 break;
5557 }
5558
5559 /* If not, then we'll be using our own TPREL entry. */
5560 if (gent->got.refcount != 0)
5561 gent->tls_type = TLS_TLS | TLS_TPREL;
5562 }
5563
5564 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5565 if (gent->got.refcount > 0)
5566 {
5567 bfd_boolean dyn;
5568
5569 /* Make sure this symbol is output as a dynamic symbol.
5570 Undefined weak syms won't yet be marked as dynamic,
5571 nor will all TLS symbols. */
5572 if (h->dynindx == -1
5573 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5574 {
5575 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5576 return FALSE;
5577 }
5578
5579 if ((gent->tls_type & TLS_LD) != 0
5580 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5581 {
5582 gent->got.offset = htab->tlsld_got.offset;
5583 continue;
5584 }
5585
5586 s = htab->sgot;
5587 gent->got.offset = s->_raw_size;
5588 s->_raw_size
5589 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5590 dyn = htab->elf.dynamic_sections_created;
5591 if (info->shared
5592 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5593 htab->srelgot->_raw_size
5594 += (gent->tls_type & eh->tls_mask & TLS_GD
5595 ? 2 * sizeof (Elf64_External_Rela)
5596 : sizeof (Elf64_External_Rela));
5597 }
5598 else
5599 gent->got.offset = (bfd_vma) -1;
5600
5601 if (eh->dyn_relocs == NULL)
5602 return TRUE;
5603
5604 /* In the shared -Bsymbolic case, discard space allocated for
5605 dynamic pc-relative relocs against symbols which turn out to be
5606 defined in regular objects. For the normal shared case, discard
5607 space for relocs that have become local due to symbol visibility
5608 changes. */
5609
5610 if (info->shared)
5611 {
5612 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
5613 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
5614 || info->symbolic))
5615 {
5616 struct ppc_dyn_relocs **pp;
5617
5618 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5619 {
5620 p->count -= p->pc_count;
5621 p->pc_count = 0;
5622 if (p->count == 0)
5623 *pp = p->next;
5624 else
5625 pp = &p->next;
5626 }
5627 }
5628 }
5629 else if (ELIMINATE_COPY_RELOCS)
5630 {
5631 /* For the non-shared case, discard space for relocs against
5632 symbols which turn out to need copy relocs or are not
5633 dynamic. */
5634
5635 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5636 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5637 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5638 {
5639 /* Make sure this symbol is output as a dynamic symbol.
5640 Undefined weak syms won't yet be marked as dynamic. */
5641 if (h->dynindx == -1
5642 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5643 {
5644 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5645 return FALSE;
5646 }
5647
5648 /* If that succeeded, we know we'll be keeping all the
5649 relocs. */
5650 if (h->dynindx != -1)
5651 goto keep;
5652 }
5653
5654 eh->dyn_relocs = NULL;
5655
5656 keep: ;
5657 }
5658
5659 /* Finally, allocate space. */
5660 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5661 {
5662 asection *sreloc = elf_section_data (p->sec)->sreloc;
5663 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
5664 }
5665
5666 return TRUE;
5667 }
5668
5669 /* Find any dynamic relocs that apply to read-only sections. */
5670
5671 static bfd_boolean
5672 readonly_dynrelocs (h, inf)
5673 struct elf_link_hash_entry *h;
5674 PTR inf;
5675 {
5676 struct ppc_link_hash_entry *eh;
5677 struct ppc_dyn_relocs *p;
5678
5679 if (h->root.type == bfd_link_hash_warning)
5680 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5681
5682 eh = (struct ppc_link_hash_entry *) h;
5683 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5684 {
5685 asection *s = p->sec->output_section;
5686
5687 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5688 {
5689 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5690
5691 info->flags |= DF_TEXTREL;
5692
5693 /* Not an error, just cut short the traversal. */
5694 return FALSE;
5695 }
5696 }
5697 return TRUE;
5698 }
5699
5700 /* Set the sizes of the dynamic sections. */
5701
5702 static bfd_boolean
5703 ppc64_elf_size_dynamic_sections (output_bfd, info)
5704 bfd *output_bfd ATTRIBUTE_UNUSED;
5705 struct bfd_link_info *info;
5706 {
5707 struct ppc_link_hash_table *htab;
5708 bfd *dynobj;
5709 asection *s;
5710 bfd_boolean relocs;
5711 bfd *ibfd;
5712
5713 htab = ppc_hash_table (info);
5714 dynobj = htab->elf.dynobj;
5715 if (dynobj == NULL)
5716 abort ();
5717
5718 if (htab->elf.dynamic_sections_created)
5719 {
5720 /* Set the contents of the .interp section to the interpreter. */
5721 if (! info->shared)
5722 {
5723 s = bfd_get_section_by_name (dynobj, ".interp");
5724 if (s == NULL)
5725 abort ();
5726 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
5727 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5728 }
5729 }
5730
5731 if (htab->tlsld_got.refcount > 0)
5732 {
5733 htab->tlsld_got.offset = htab->sgot->_raw_size;
5734 htab->sgot->_raw_size += 16;
5735 if (info->shared)
5736 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
5737 }
5738 else
5739 htab->tlsld_got.offset = (bfd_vma) -1;
5740
5741 /* Set up .got offsets for local syms, and space for local dynamic
5742 relocs. */
5743 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5744 {
5745 struct got_entry **lgot_ents;
5746 struct got_entry **end_lgot_ents;
5747 char *lgot_masks;
5748 bfd_size_type locsymcount;
5749 Elf_Internal_Shdr *symtab_hdr;
5750 asection *srel;
5751
5752 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5753 continue;
5754
5755 for (s = ibfd->sections; s != NULL; s = s->next)
5756 {
5757 struct ppc_dyn_relocs *p;
5758
5759 for (p = *((struct ppc_dyn_relocs **)
5760 &elf_section_data (s)->local_dynrel);
5761 p != NULL;
5762 p = p->next)
5763 {
5764 if (!bfd_is_abs_section (p->sec)
5765 && bfd_is_abs_section (p->sec->output_section))
5766 {
5767 /* Input section has been discarded, either because
5768 it is a copy of a linkonce section or due to
5769 linker script /DISCARD/, so we'll be discarding
5770 the relocs too. */
5771 }
5772 else if (p->count != 0)
5773 {
5774 srel = elf_section_data (p->sec)->sreloc;
5775 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
5776 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5777 info->flags |= DF_TEXTREL;
5778 }
5779 }
5780 }
5781
5782 lgot_ents = elf_local_got_ents (ibfd);
5783 if (!lgot_ents)
5784 continue;
5785
5786 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5787 locsymcount = symtab_hdr->sh_info;
5788 end_lgot_ents = lgot_ents + locsymcount;
5789 lgot_masks = (char *) end_lgot_ents;
5790 s = htab->sgot;
5791 srel = htab->srelgot;
5792 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5793 {
5794 struct got_entry *ent;
5795
5796 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5797 if (ent->got.refcount > 0)
5798 {
5799 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5800 {
5801 if (htab->tlsld_got.offset == (bfd_vma) -1)
5802 {
5803 htab->tlsld_got.offset = s->_raw_size;
5804 s->_raw_size += 16;
5805 if (info->shared)
5806 srel->_raw_size += sizeof (Elf64_External_Rela);
5807 }
5808 ent->got.offset = htab->tlsld_got.offset;
5809 }
5810 else
5811 {
5812 ent->got.offset = s->_raw_size;
5813 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5814 {
5815 s->_raw_size += 16;
5816 if (info->shared)
5817 srel->_raw_size += 2 * sizeof (Elf64_External_Rela);
5818 }
5819 else
5820 {
5821 s->_raw_size += 8;
5822 if (info->shared)
5823 srel->_raw_size += sizeof (Elf64_External_Rela);
5824 }
5825 }
5826 }
5827 else
5828 ent->got.offset = (bfd_vma) -1;
5829 }
5830 }
5831
5832 /* Allocate global sym .plt and .got entries, and space for global
5833 sym dynamic relocs. */
5834 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
5835
5836 /* We now have determined the sizes of the various dynamic sections.
5837 Allocate memory for them. */
5838 relocs = FALSE;
5839 for (s = dynobj->sections; s != NULL; s = s->next)
5840 {
5841 if ((s->flags & SEC_LINKER_CREATED) == 0)
5842 continue;
5843
5844 /* Reset _cooked_size since prelim layout will set it wrongly,
5845 and a non-zero _cooked_size sticks. */
5846 s->_cooked_size = 0;
5847
5848 if (s == htab->sbrlt || s == htab->srelbrlt)
5849 /* These haven't been allocated yet; don't strip. */
5850 continue;
5851 else if (s == htab->splt
5852 || s == htab->sgot
5853 || s == htab->sglink)
5854 {
5855 /* Strip this section if we don't need it; see the
5856 comment below. */
5857 }
5858 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5859 {
5860 if (s->_raw_size == 0)
5861 {
5862 /* If we don't need this section, strip it from the
5863 output file. This is mostly to handle .rela.bss and
5864 .rela.plt. We must create both sections in
5865 create_dynamic_sections, because they must be created
5866 before the linker maps input sections to output
5867 sections. The linker does that before
5868 adjust_dynamic_symbol is called, and it is that
5869 function which decides whether anything needs to go
5870 into these sections. */
5871 }
5872 else
5873 {
5874 if (s != htab->srelplt)
5875 relocs = TRUE;
5876
5877 /* We use the reloc_count field as a counter if we need
5878 to copy relocs into the output file. */
5879 s->reloc_count = 0;
5880 }
5881 }
5882 else
5883 {
5884 /* It's not one of our sections, so don't allocate space. */
5885 continue;
5886 }
5887
5888 if (s->_raw_size == 0)
5889 {
5890 _bfd_strip_section_from_output (info, s);
5891 continue;
5892 }
5893
5894 /* .plt is in the bss section. We don't initialise it. */
5895 if ((s->flags & SEC_LOAD) == 0)
5896 continue;
5897
5898 /* Allocate memory for the section contents. We use bfd_zalloc
5899 here in case unused entries are not reclaimed before the
5900 section's contents are written out. This should not happen,
5901 but this way if it does we get a R_PPC64_NONE reloc in .rela
5902 sections instead of garbage.
5903 We also rely on the section contents being zero when writing
5904 the GOT. */
5905 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
5906 if (s->contents == NULL)
5907 return FALSE;
5908 }
5909
5910 if (htab->elf.dynamic_sections_created)
5911 {
5912 /* Add some entries to the .dynamic section. We fill in the
5913 values later, in ppc64_elf_finish_dynamic_sections, but we
5914 must add the entries now so that we get the correct size for
5915 the .dynamic section. The DT_DEBUG entry is filled in by the
5916 dynamic linker and used by the debugger. */
5917 #define add_dynamic_entry(TAG, VAL) \
5918 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
5919
5920 if (!info->shared)
5921 {
5922 if (!add_dynamic_entry (DT_DEBUG, 0))
5923 return FALSE;
5924 }
5925
5926 if (htab->splt != NULL && htab->splt->_raw_size != 0)
5927 {
5928 if (!add_dynamic_entry (DT_PLTGOT, 0)
5929 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5930 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5931 || !add_dynamic_entry (DT_JMPREL, 0)
5932 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
5933 return FALSE;
5934 }
5935
5936 if (NO_OPD_RELOCS)
5937 {
5938 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
5939 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
5940 return FALSE;
5941 }
5942
5943 if (relocs)
5944 {
5945 if (!add_dynamic_entry (DT_RELA, 0)
5946 || !add_dynamic_entry (DT_RELASZ, 0)
5947 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
5948 return FALSE;
5949
5950 /* If any dynamic relocs apply to a read-only section,
5951 then we need a DT_TEXTREL entry. */
5952 if ((info->flags & DF_TEXTREL) == 0)
5953 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
5954 (PTR) info);
5955
5956 if ((info->flags & DF_TEXTREL) != 0)
5957 {
5958 if (!add_dynamic_entry (DT_TEXTREL, 0))
5959 return FALSE;
5960 }
5961 }
5962 }
5963 #undef add_dynamic_entry
5964
5965 return TRUE;
5966 }
5967
5968 /* Determine the type of stub needed, if any, for a call. */
5969
5970 static INLINE enum ppc_stub_type
5971 ppc_type_of_stub (input_sec, rel, hash, destination)
5972 asection *input_sec;
5973 const Elf_Internal_Rela *rel;
5974 struct ppc_link_hash_entry **hash;
5975 bfd_vma destination;
5976 {
5977 struct ppc_link_hash_entry *h = *hash;
5978 bfd_vma location;
5979 bfd_vma branch_offset;
5980 bfd_vma max_branch_offset;
5981 unsigned int r_type;
5982
5983 if (h != NULL)
5984 {
5985 if (h->oh != NULL
5986 && h->oh->dynindx != -1)
5987 {
5988 struct plt_entry *ent;
5989 for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
5990 if (ent->addend == rel->r_addend
5991 && ent->plt.offset != (bfd_vma) -1)
5992 {
5993 *hash = (struct ppc_link_hash_entry *) h->oh;
5994 return ppc_stub_plt_call;
5995 }
5996 }
5997
5998 if (h->elf.root.type == bfd_link_hash_undefweak
5999 || h->elf.root.type == bfd_link_hash_undefined)
6000 return ppc_stub_none;
6001 }
6002
6003 /* Determine where the call point is. */
6004 location = (input_sec->output_offset
6005 + input_sec->output_section->vma
6006 + rel->r_offset);
6007
6008 branch_offset = destination - location;
6009 r_type = ELF64_R_TYPE (rel->r_info);
6010
6011 /* Determine if a long branch stub is needed. */
6012 max_branch_offset = 1 << 25;
6013 if (r_type != (unsigned int) R_PPC64_REL24)
6014 max_branch_offset = 1 << 15;
6015
6016 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6017 /* We need a stub. Figure out whether a long_branch or plt_branch
6018 is needed later. */
6019 return ppc_stub_long_branch;
6020
6021 return ppc_stub_none;
6022 }
6023
6024 /* Build a .plt call stub. */
6025
6026 static bfd_byte *
6027 build_plt_stub (obfd, p, offset, glink)
6028 bfd *obfd;
6029 bfd_byte *p;
6030 int offset;
6031 int glink;
6032 {
6033 #define PPC_LO(v) ((v) & 0xffff)
6034 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6035 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6036
6037 if (glink)
6038 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
6039 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6040 if (!glink)
6041 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6042 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6043 if (PPC_HA (offset + 8) != PPC_HA (offset))
6044 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
6045 offset += 8;
6046 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6047 if (PPC_HA (offset + 8) != PPC_HA (offset))
6048 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
6049 offset += 8;
6050 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6051 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6052 bfd_put_32 (obfd, BCTR, p), p += 4;
6053 return p;
6054 }
6055
6056 static bfd_boolean
6057 ppc_build_one_stub (gen_entry, in_arg)
6058 struct bfd_hash_entry *gen_entry;
6059 PTR in_arg;
6060 {
6061 struct ppc_stub_hash_entry *stub_entry;
6062 struct ppc_branch_hash_entry *br_entry;
6063 struct bfd_link_info *info;
6064 struct ppc_link_hash_table *htab;
6065 asection *stub_sec;
6066 bfd *stub_bfd;
6067 bfd_byte *loc;
6068 bfd_byte *p;
6069 unsigned int indx;
6070 struct plt_entry *ent;
6071 bfd_vma off;
6072 int size;
6073
6074 /* Massage our args to the form they really have. */
6075 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6076 info = (struct bfd_link_info *) in_arg;
6077
6078 htab = ppc_hash_table (info);
6079 stub_sec = stub_entry->stub_sec;
6080
6081 /* Make a note of the offset within the stubs for this entry. */
6082 stub_entry->stub_offset = stub_sec->_cooked_size;
6083 loc = stub_sec->contents + stub_entry->stub_offset;
6084
6085 stub_bfd = stub_sec->owner;
6086
6087 switch (stub_entry->stub_type)
6088 {
6089 case ppc_stub_long_branch:
6090 /* Branches are relative. This is where we are going to. */
6091 off = (stub_entry->target_value
6092 + stub_entry->target_section->output_offset
6093 + stub_entry->target_section->output_section->vma);
6094
6095 /* And this is where we are coming from. */
6096 off -= (stub_entry->stub_offset
6097 + stub_sec->output_offset
6098 + stub_sec->output_section->vma);
6099
6100 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6101
6102 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
6103 size = 4;
6104 break;
6105
6106 case ppc_stub_plt_branch:
6107 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6108 stub_entry->root.string + 9,
6109 FALSE, FALSE);
6110 if (br_entry == NULL)
6111 {
6112 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6113 stub_entry->root.string + 9);
6114 htab->stub_error = TRUE;
6115 return FALSE;
6116 }
6117
6118 off = (stub_entry->target_value
6119 + stub_entry->target_section->output_offset
6120 + stub_entry->target_section->output_section->vma);
6121
6122 bfd_put_64 (htab->sbrlt->owner, off,
6123 htab->sbrlt->contents + br_entry->offset);
6124
6125 if (info->shared)
6126 {
6127 /* Create a reloc for the branch lookup table entry. */
6128 Elf_Internal_Rela rela;
6129 bfd_byte *loc;
6130
6131 rela.r_offset = (br_entry->offset
6132 + htab->sbrlt->output_offset
6133 + htab->sbrlt->output_section->vma);
6134 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6135 rela.r_addend = off;
6136
6137 loc = htab->srelbrlt->contents;
6138 loc += htab->srelbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6139 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, loc);
6140 }
6141
6142 off = (br_entry->offset
6143 + htab->sbrlt->output_offset
6144 + htab->sbrlt->output_section->vma
6145 - elf_gp (htab->sbrlt->output_section->owner)
6146 - TOC_BASE_OFF);
6147
6148 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
6149 {
6150 (*_bfd_error_handler)
6151 (_("linkage table error against `%s'"),
6152 stub_entry->root.string);
6153 bfd_set_error (bfd_error_bad_value);
6154 htab->stub_error = TRUE;
6155 return FALSE;
6156 }
6157
6158 indx = off;
6159 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
6160 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
6161 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
6162 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
6163 size = 16;
6164 break;
6165
6166 case ppc_stub_plt_call:
6167 /* Do the best we can for shared libraries built without
6168 exporting ".foo" for each "foo". This can happen when symbol
6169 versioning scripts strip all bar a subset of symbols. */
6170 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
6171 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
6172 {
6173 /* Point the symbol at the stub. There may be multiple stubs,
6174 we don't really care; The main thing is to make this sym
6175 defined somewhere. */
6176 stub_entry->h->oh->root.type = bfd_link_hash_defined;
6177 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
6178 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
6179 }
6180
6181 /* Now build the stub. */
6182 off = (bfd_vma) -1;
6183 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6184 if (ent->addend == stub_entry->addend)
6185 {
6186 off = ent->plt.offset;
6187 break;
6188 }
6189 if (off >= (bfd_vma) -2)
6190 abort ();
6191
6192 off &= ~ (bfd_vma) 1;
6193 off += (htab->splt->output_offset
6194 + htab->splt->output_section->vma
6195 - elf_gp (htab->splt->output_section->owner)
6196 - TOC_BASE_OFF);
6197
6198 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
6199 {
6200 (*_bfd_error_handler)
6201 (_("linkage table error against `%s'"),
6202 stub_entry->h->elf.root.root.string);
6203 bfd_set_error (bfd_error_bad_value);
6204 htab->stub_error = TRUE;
6205 return FALSE;
6206 }
6207
6208 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
6209 size = p - loc;
6210 break;
6211
6212 default:
6213 BFD_FAIL ();
6214 return FALSE;
6215 }
6216
6217 stub_sec->_cooked_size += size;
6218 return TRUE;
6219 }
6220
6221 /* As above, but don't actually build the stub. Just bump offset so
6222 we know stub section sizes, and select plt_branch stubs where
6223 long_branch stubs won't do. */
6224
6225 static bfd_boolean
6226 ppc_size_one_stub (gen_entry, in_arg)
6227 struct bfd_hash_entry *gen_entry;
6228 PTR in_arg;
6229 {
6230 struct ppc_stub_hash_entry *stub_entry;
6231 struct ppc_link_hash_table *htab;
6232 bfd_vma off;
6233 int size;
6234
6235 /* Massage our args to the form they really have. */
6236 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6237 htab = (struct ppc_link_hash_table *) in_arg;
6238
6239 if (stub_entry->stub_type == ppc_stub_plt_call)
6240 {
6241 struct plt_entry *ent;
6242 off = (bfd_vma) -1;
6243 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6244 if (ent->addend == stub_entry->addend)
6245 {
6246 off = ent->plt.offset & ~(bfd_vma) 1;
6247 break;
6248 }
6249 if (off >= (bfd_vma) -2)
6250 abort ();
6251 off += (htab->splt->output_offset
6252 + htab->splt->output_section->vma
6253 - elf_gp (htab->splt->output_section->owner)
6254 - TOC_BASE_OFF);
6255
6256 size = 28;
6257 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
6258 size += 4;
6259 }
6260 else
6261 {
6262 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
6263 stub_entry->stub_type = ppc_stub_long_branch;
6264 size = 4;
6265
6266 off = (stub_entry->target_value
6267 + stub_entry->target_section->output_offset
6268 + stub_entry->target_section->output_section->vma);
6269 off -= (stub_entry->stub_sec->_raw_size
6270 + stub_entry->stub_sec->output_offset
6271 + stub_entry->stub_sec->output_section->vma);
6272
6273 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6274 {
6275 struct ppc_branch_hash_entry *br_entry;
6276
6277 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6278 stub_entry->root.string + 9,
6279 TRUE, FALSE);
6280 if (br_entry == NULL)
6281 {
6282 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6283 stub_entry->root.string + 9);
6284 htab->stub_error = TRUE;
6285 return FALSE;
6286 }
6287
6288 if (br_entry->iter != htab->stub_iteration)
6289 {
6290 br_entry->iter = htab->stub_iteration;
6291 br_entry->offset = htab->sbrlt->_raw_size;
6292 htab->sbrlt->_raw_size += 8;
6293 }
6294 stub_entry->stub_type = ppc_stub_plt_branch;
6295 size = 16;
6296 }
6297 }
6298
6299 stub_entry->stub_sec->_raw_size += size;
6300 return TRUE;
6301 }
6302
6303 /* Set up various things so that we can make a list of input sections
6304 for each output section included in the link. Returns -1 on error,
6305 0 when no stubs will be needed, and 1 on success. */
6306
6307 int
6308 ppc64_elf_setup_section_lists (output_bfd, info)
6309 bfd *output_bfd;
6310 struct bfd_link_info *info;
6311 {
6312 bfd *input_bfd;
6313 int top_id, top_index;
6314 asection *section;
6315 asection **input_list, **list;
6316 bfd_size_type amt;
6317 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6318
6319 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
6320 || htab->sbrlt == NULL)
6321 return 0;
6322
6323 /* Find the top input section id. */
6324 for (input_bfd = info->input_bfds, top_id = 0;
6325 input_bfd != NULL;
6326 input_bfd = input_bfd->link_next)
6327 {
6328 for (section = input_bfd->sections;
6329 section != NULL;
6330 section = section->next)
6331 {
6332 if (top_id < section->id)
6333 top_id = section->id;
6334 }
6335 }
6336
6337 amt = sizeof (struct map_stub) * (top_id + 1);
6338 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
6339 if (htab->stub_group == NULL)
6340 return -1;
6341
6342 /* We can't use output_bfd->section_count here to find the top output
6343 section index as some sections may have been removed, and
6344 _bfd_strip_section_from_output doesn't renumber the indices. */
6345 for (section = output_bfd->sections, top_index = 0;
6346 section != NULL;
6347 section = section->next)
6348 {
6349 if (top_index < section->index)
6350 top_index = section->index;
6351 }
6352
6353 htab->top_index = top_index;
6354 amt = sizeof (asection *) * (top_index + 1);
6355 input_list = (asection **) bfd_malloc (amt);
6356 htab->input_list = input_list;
6357 if (input_list == NULL)
6358 return -1;
6359
6360 /* For sections we aren't interested in, mark their entries with a
6361 value we can check later. */
6362 list = input_list + top_index;
6363 do
6364 *list = bfd_abs_section_ptr;
6365 while (list-- != input_list);
6366
6367 for (section = output_bfd->sections;
6368 section != NULL;
6369 section = section->next)
6370 {
6371 if ((section->flags & SEC_CODE) != 0)
6372 input_list[section->index] = NULL;
6373 }
6374
6375 return 1;
6376 }
6377
6378 /* The linker repeatedly calls this function for each input section,
6379 in the order that input sections are linked into output sections.
6380 Build lists of input sections to determine groupings between which
6381 we may insert linker stubs. */
6382
6383 void
6384 ppc64_elf_next_input_section (info, isec)
6385 struct bfd_link_info *info;
6386 asection *isec;
6387 {
6388 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6389
6390 if (isec->output_section->index <= htab->top_index)
6391 {
6392 asection **list = htab->input_list + isec->output_section->index;
6393 if (*list != bfd_abs_section_ptr)
6394 {
6395 /* Steal the link_sec pointer for our list. */
6396 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6397 /* This happens to make the list in reverse order,
6398 which is what we want. */
6399 PREV_SEC (isec) = *list;
6400 *list = isec;
6401 }
6402 }
6403 }
6404
6405 /* See whether we can group stub sections together. Grouping stub
6406 sections may result in fewer stubs. More importantly, we need to
6407 put all .init* and .fini* stubs at the beginning of the .init or
6408 .fini output sections respectively, because glibc splits the
6409 _init and _fini functions into multiple parts. Putting a stub in
6410 the middle of a function is not a good idea. */
6411
6412 static void
6413 group_sections (htab, stub_group_size, stubs_always_before_branch)
6414 struct ppc_link_hash_table *htab;
6415 bfd_size_type stub_group_size;
6416 bfd_boolean stubs_always_before_branch;
6417 {
6418 asection **list = htab->input_list + htab->top_index;
6419 do
6420 {
6421 asection *tail = *list;
6422 if (tail == bfd_abs_section_ptr)
6423 continue;
6424 while (tail != NULL)
6425 {
6426 asection *curr;
6427 asection *prev;
6428 bfd_size_type total;
6429 bfd_boolean big_sec;
6430
6431 curr = tail;
6432 if (tail->_cooked_size)
6433 total = tail->_cooked_size;
6434 else
6435 total = tail->_raw_size;
6436 big_sec = total >= stub_group_size;
6437
6438 while ((prev = PREV_SEC (curr)) != NULL
6439 && ((total += curr->output_offset - prev->output_offset)
6440 < stub_group_size))
6441 curr = prev;
6442
6443 /* OK, the size from the start of CURR to the end is less
6444 than stub_group_size and thus can be handled by one stub
6445 section. (or the tail section is itself larger than
6446 stub_group_size, in which case we may be toast.) We
6447 should really be keeping track of the total size of stubs
6448 added here, as stubs contribute to the final output
6449 section size. That's a little tricky, and this way will
6450 only break if stubs added make the total size more than
6451 2^25, ie. for the default stub_group_size, if stubs total
6452 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6453 do
6454 {
6455 prev = PREV_SEC (tail);
6456 /* Set up this stub group. */
6457 htab->stub_group[tail->id].link_sec = curr;
6458 }
6459 while (tail != curr && (tail = prev) != NULL);
6460
6461 /* But wait, there's more! Input sections up to stub_group_size
6462 bytes before the stub section can be handled by it too.
6463 Don't do this if we have a really large section after the
6464 stubs, as adding more stubs increases the chance that
6465 branches may not reach into the stub section. */
6466 if (!stubs_always_before_branch && !big_sec)
6467 {
6468 total = 0;
6469 while (prev != NULL
6470 && ((total += tail->output_offset - prev->output_offset)
6471 < stub_group_size))
6472 {
6473 tail = prev;
6474 prev = PREV_SEC (tail);
6475 htab->stub_group[tail->id].link_sec = curr;
6476 }
6477 }
6478 tail = prev;
6479 }
6480 }
6481 while (list-- != htab->input_list);
6482 free (htab->input_list);
6483 #undef PREV_SEC
6484 }
6485
6486 /* Determine and set the size of the stub section for a final link.
6487
6488 The basic idea here is to examine all the relocations looking for
6489 PC-relative calls to a target that is unreachable with a "bl"
6490 instruction. */
6491
6492 bfd_boolean
6493 ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
6494 add_stub_section, layout_sections_again)
6495 bfd *output_bfd;
6496 bfd *stub_bfd;
6497 struct bfd_link_info *info;
6498 bfd_signed_vma group_size;
6499 asection * (*add_stub_section) PARAMS ((const char *, asection *));
6500 void (*layout_sections_again) PARAMS ((void));
6501 {
6502 bfd_size_type stub_group_size;
6503 bfd_boolean stubs_always_before_branch;
6504 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6505
6506 /* Stash our params away. */
6507 htab->stub_bfd = stub_bfd;
6508 htab->add_stub_section = add_stub_section;
6509 htab->layout_sections_again = layout_sections_again;
6510 stubs_always_before_branch = group_size < 0;
6511 if (group_size < 0)
6512 stub_group_size = -group_size;
6513 else
6514 stub_group_size = group_size;
6515 if (stub_group_size == 1)
6516 {
6517 /* Default values. */
6518 if (stubs_always_before_branch)
6519 {
6520 stub_group_size = 0x1e00000;
6521 if (htab->has_14bit_branch)
6522 stub_group_size = 0x7800;
6523 }
6524 else
6525 {
6526 stub_group_size = 0x1c00000;
6527 if (htab->has_14bit_branch)
6528 stub_group_size = 0x7000;
6529 }
6530 }
6531
6532 group_sections (htab, stub_group_size, stubs_always_before_branch);
6533
6534 while (1)
6535 {
6536 bfd *input_bfd;
6537 unsigned int bfd_indx;
6538 asection *stub_sec;
6539 bfd_boolean stub_changed;
6540
6541 htab->stub_iteration += 1;
6542 stub_changed = FALSE;
6543
6544 for (input_bfd = info->input_bfds, bfd_indx = 0;
6545 input_bfd != NULL;
6546 input_bfd = input_bfd->link_next, bfd_indx++)
6547 {
6548 Elf_Internal_Shdr *symtab_hdr;
6549 asection *section;
6550 Elf_Internal_Sym *local_syms = NULL;
6551
6552 /* We'll need the symbol table in a second. */
6553 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6554 if (symtab_hdr->sh_info == 0)
6555 continue;
6556
6557 /* Walk over each section attached to the input bfd. */
6558 for (section = input_bfd->sections;
6559 section != NULL;
6560 section = section->next)
6561 {
6562 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6563
6564 /* If there aren't any relocs, then there's nothing more
6565 to do. */
6566 if ((section->flags & SEC_RELOC) == 0
6567 || section->reloc_count == 0)
6568 continue;
6569
6570 /* If this section is a link-once section that will be
6571 discarded, then don't create any stubs. */
6572 if (section->output_section == NULL
6573 || section->output_section->owner != output_bfd)
6574 continue;
6575
6576 /* Get the relocs. */
6577 internal_relocs
6578 = _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
6579 (Elf_Internal_Rela *) NULL,
6580 info->keep_memory);
6581 if (internal_relocs == NULL)
6582 goto error_ret_free_local;
6583
6584 /* Now examine each relocation. */
6585 irela = internal_relocs;
6586 irelaend = irela + section->reloc_count;
6587 for (; irela < irelaend; irela++)
6588 {
6589 unsigned int r_type, r_indx;
6590 enum ppc_stub_type stub_type;
6591 struct ppc_stub_hash_entry *stub_entry;
6592 asection *sym_sec;
6593 bfd_vma sym_value;
6594 bfd_vma destination;
6595 struct ppc_link_hash_entry *hash;
6596 struct elf_link_hash_entry *h;
6597 Elf_Internal_Sym *sym;
6598 char *stub_name;
6599 const asection *id_sec;
6600
6601 r_type = ELF64_R_TYPE (irela->r_info);
6602 r_indx = ELF64_R_SYM (irela->r_info);
6603
6604 if (r_type >= (unsigned int) R_PPC64_max)
6605 {
6606 bfd_set_error (bfd_error_bad_value);
6607 goto error_ret_free_internal;
6608 }
6609
6610 /* Only look for stubs on branch instructions. */
6611 if (r_type != (unsigned int) R_PPC64_REL24
6612 && r_type != (unsigned int) R_PPC64_REL14
6613 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
6614 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
6615 continue;
6616
6617 /* Now determine the call target, its name, value,
6618 section. */
6619 destination = 0;
6620 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6621 r_indx, input_bfd))
6622 goto error_ret_free_internal;
6623 hash = (struct ppc_link_hash_entry *) h;
6624
6625 if (hash == NULL)
6626 {
6627 /* It's a local symbol. */
6628 sym_value = sym->st_value;
6629 destination = (sym_value + irela->r_addend
6630 + sym_sec->output_offset
6631 + sym_sec->output_section->vma);
6632 }
6633 else
6634 {
6635 /* It's an external symbol. */
6636 sym_value = 0;
6637 if (hash->elf.root.type == bfd_link_hash_defined
6638 || hash->elf.root.type == bfd_link_hash_defweak)
6639 {
6640 sym_value = hash->elf.root.u.def.value;
6641 if (sym_sec->output_section != NULL)
6642 destination = (sym_value + irela->r_addend
6643 + sym_sec->output_offset
6644 + sym_sec->output_section->vma);
6645 }
6646 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6647 ;
6648 else if (hash->elf.root.type == bfd_link_hash_undefined)
6649 ;
6650 else
6651 {
6652 bfd_set_error (bfd_error_bad_value);
6653 goto error_ret_free_internal;
6654 }
6655 }
6656
6657 /* Determine what (if any) linker stub is needed. */
6658 stub_type = ppc_type_of_stub (section, irela, &hash,
6659 destination);
6660 if (stub_type == ppc_stub_none)
6661 continue;
6662
6663 /* __tls_get_addr calls might be eliminated. */
6664 if (stub_type != ppc_stub_plt_call
6665 && hash != NULL
6666 && &hash->elf == htab->tls_get_addr
6667 && section->has_tls_reloc
6668 && irela != internal_relocs)
6669 {
6670 /* Get tls info. */
6671 char *tls_mask;
6672
6673 if (!get_tls_mask (&tls_mask, &local_syms,
6674 irela - 1, input_bfd))
6675 goto error_ret_free_internal;
6676 if (*tls_mask != 0)
6677 continue;
6678 }
6679
6680 /* Support for grouping stub sections. */
6681 id_sec = htab->stub_group[section->id].link_sec;
6682
6683 /* Get the name of this stub. */
6684 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
6685 if (!stub_name)
6686 goto error_ret_free_internal;
6687
6688 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
6689 stub_name, FALSE, FALSE);
6690 if (stub_entry != NULL)
6691 {
6692 /* The proper stub has already been created. */
6693 free (stub_name);
6694 continue;
6695 }
6696
6697 stub_entry = ppc_add_stub (stub_name, section, htab);
6698 if (stub_entry == NULL)
6699 {
6700 free (stub_name);
6701 error_ret_free_internal:
6702 if (elf_section_data (section)->relocs == NULL)
6703 free (internal_relocs);
6704 error_ret_free_local:
6705 if (local_syms != NULL
6706 && (symtab_hdr->contents
6707 != (unsigned char *) local_syms))
6708 free (local_syms);
6709 return FALSE;
6710 }
6711
6712 stub_entry->target_value = sym_value;
6713 stub_entry->target_section = sym_sec;
6714 stub_entry->stub_type = stub_type;
6715 stub_entry->h = hash;
6716 stub_entry->addend = irela->r_addend;
6717 stub_changed = TRUE;
6718 }
6719
6720 /* We're done with the internal relocs, free them. */
6721 if (elf_section_data (section)->relocs != internal_relocs)
6722 free (internal_relocs);
6723 }
6724
6725 if (local_syms != NULL
6726 && symtab_hdr->contents != (unsigned char *) local_syms)
6727 {
6728 if (!info->keep_memory)
6729 free (local_syms);
6730 else
6731 symtab_hdr->contents = (unsigned char *) local_syms;
6732 }
6733 }
6734
6735 if (!stub_changed)
6736 break;
6737
6738 /* OK, we've added some stubs. Find out the new size of the
6739 stub sections. */
6740 for (stub_sec = htab->stub_bfd->sections;
6741 stub_sec != NULL;
6742 stub_sec = stub_sec->next)
6743 {
6744 stub_sec->_raw_size = 0;
6745 stub_sec->_cooked_size = 0;
6746 }
6747 htab->sbrlt->_raw_size = 0;
6748 htab->sbrlt->_cooked_size = 0;
6749
6750 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
6751
6752 /* Ask the linker to do its stuff. */
6753 (*htab->layout_sections_again) ();
6754 }
6755
6756 /* It would be nice to strip .branch_lt from the output if the
6757 section is empty, but it's too late. If we strip sections here,
6758 the dynamic symbol table is corrupted since the section symbol
6759 for the stripped section isn't written. */
6760
6761 return TRUE;
6762 }
6763
6764 /* Called after we have determined section placement. If sections
6765 move, we'll be called again. Provide a value for TOCstart. */
6766
6767 bfd_vma
6768 ppc64_elf_toc (obfd)
6769 bfd *obfd;
6770 {
6771 asection *s;
6772 bfd_vma TOCstart;
6773
6774 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
6775 order. The TOC starts where the first of these sections starts. */
6776 s = bfd_get_section_by_name (obfd, ".got");
6777 if (s == NULL)
6778 s = bfd_get_section_by_name (obfd, ".toc");
6779 if (s == NULL)
6780 s = bfd_get_section_by_name (obfd, ".tocbss");
6781 if (s == NULL)
6782 s = bfd_get_section_by_name (obfd, ".plt");
6783 if (s == NULL)
6784 {
6785 /* This may happen for
6786 o references to TOC base (SYM@toc / TOC[tc0]) without a
6787 .toc directive
6788 o bad linker script
6789 o --gc-sections and empty TOC sections
6790
6791 FIXME: Warn user? */
6792
6793 /* Look for a likely section. We probably won't even be
6794 using TOCstart. */
6795 for (s = obfd->sections; s != NULL; s = s->next)
6796 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
6797 == (SEC_ALLOC | SEC_SMALL_DATA))
6798 break;
6799 if (s == NULL)
6800 for (s = obfd->sections; s != NULL; s = s->next)
6801 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
6802 == (SEC_ALLOC | SEC_SMALL_DATA))
6803 break;
6804 if (s == NULL)
6805 for (s = obfd->sections; s != NULL; s = s->next)
6806 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
6807 break;
6808 if (s == NULL)
6809 for (s = obfd->sections; s != NULL; s = s->next)
6810 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
6811 break;
6812 }
6813
6814 TOCstart = 0;
6815 if (s != NULL)
6816 TOCstart = s->output_section->vma + s->output_offset;
6817
6818 return TOCstart;
6819 }
6820
6821 /* Build all the stubs associated with the current output file.
6822 The stubs are kept in a hash table attached to the main linker
6823 hash table. This function is called via gldelf64ppc_finish. */
6824
6825 bfd_boolean
6826 ppc64_elf_build_stubs (info)
6827 struct bfd_link_info *info;
6828 {
6829 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6830 asection *stub_sec;
6831 bfd_vma plt_r2;
6832 bfd_byte *p;
6833
6834 for (stub_sec = htab->stub_bfd->sections;
6835 stub_sec != NULL;
6836 stub_sec = stub_sec->next)
6837 {
6838 bfd_size_type size;
6839
6840 /* Allocate memory to hold the linker stubs. */
6841 size = stub_sec->_raw_size;
6842 if (size != 0)
6843 {
6844 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
6845 if (stub_sec->contents == NULL)
6846 return FALSE;
6847 }
6848 stub_sec->_cooked_size = 0;
6849 }
6850
6851 if (htab->splt != NULL)
6852 {
6853 unsigned int indx;
6854
6855 /* Build the .glink plt call stub. */
6856 plt_r2 = (htab->splt->output_offset
6857 + htab->splt->output_section->vma
6858 - elf_gp (htab->splt->output_section->owner)
6859 - TOC_BASE_OFF);
6860 p = htab->sglink->contents;
6861 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
6862 while (p < htab->sglink->contents + GLINK_CALL_STUB_SIZE)
6863 {
6864 bfd_put_32 (htab->sglink->owner, NOP, p);
6865 p += 4;
6866 }
6867
6868 /* Build the .glink lazy link call stubs. */
6869 indx = 0;
6870 while (p < htab->sglink->contents + htab->sglink->_raw_size)
6871 {
6872 if (indx < 0x8000)
6873 {
6874 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
6875 p += 4;
6876 }
6877 else
6878 {
6879 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
6880 p += 4;
6881 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
6882 p += 4;
6883 }
6884 bfd_put_32 (htab->sglink->owner,
6885 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
6886 indx++;
6887 p += 4;
6888 }
6889 htab->sglink->_cooked_size = p - htab->sglink->contents;
6890 }
6891
6892 if (htab->sbrlt->_raw_size != 0)
6893 {
6894 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
6895 htab->sbrlt->_raw_size);
6896 if (htab->sbrlt->contents == NULL)
6897 return FALSE;
6898 }
6899
6900 /* Build the stubs as directed by the stub hash table. */
6901 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
6902
6903 for (stub_sec = htab->stub_bfd->sections;
6904 stub_sec != NULL;
6905 stub_sec = stub_sec->next)
6906 {
6907 if (stub_sec->_raw_size != stub_sec->_cooked_size)
6908 break;
6909 }
6910
6911 if (stub_sec != NULL
6912 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
6913 {
6914 htab->stub_error = TRUE;
6915 (*_bfd_error_handler) (_("stubs don't match calculated size"));
6916 }
6917
6918 return !htab->stub_error;
6919 }
6920
6921 /* The RELOCATE_SECTION function is called by the ELF backend linker
6922 to handle the relocations for a section.
6923
6924 The relocs are always passed as Rela structures; if the section
6925 actually uses Rel structures, the r_addend field will always be
6926 zero.
6927
6928 This function is responsible for adjust the section contents as
6929 necessary, and (if using Rela relocs and generating a
6930 relocateable output file) adjusting the reloc addend as
6931 necessary.
6932
6933 This function does not have to worry about setting the reloc
6934 address or the reloc symbol index.
6935
6936 LOCAL_SYMS is a pointer to the swapped in local symbols.
6937
6938 LOCAL_SECTIONS is an array giving the section in the input file
6939 corresponding to the st_shndx field of each local symbol.
6940
6941 The global hash table entry for the global symbols can be found
6942 via elf_sym_hashes (input_bfd).
6943
6944 When generating relocateable output, this function must handle
6945 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
6946 going to be the section symbol corresponding to the output
6947 section, which means that the addend must be adjusted
6948 accordingly. */
6949
6950 static bfd_boolean
6951 ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
6952 contents, relocs, local_syms, local_sections)
6953 bfd *output_bfd;
6954 struct bfd_link_info *info;
6955 bfd *input_bfd;
6956 asection *input_section;
6957 bfd_byte *contents;
6958 Elf_Internal_Rela *relocs;
6959 Elf_Internal_Sym *local_syms;
6960 asection **local_sections;
6961 {
6962 struct ppc_link_hash_table *htab;
6963 Elf_Internal_Shdr *symtab_hdr;
6964 struct elf_link_hash_entry **sym_hashes;
6965 Elf_Internal_Rela *rel;
6966 Elf_Internal_Rela *relend;
6967 Elf_Internal_Rela outrel;
6968 bfd_byte *loc;
6969 struct got_entry **local_got_ents;
6970 bfd_vma TOCstart;
6971 bfd_boolean ret = TRUE;
6972 bfd_boolean is_opd;
6973 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
6974 bfd_boolean is_power4 = FALSE;
6975
6976 if (info->relocateable)
6977 return TRUE;
6978
6979 /* Initialize howto table if needed. */
6980 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
6981 ppc_howto_init ();
6982
6983 htab = ppc_hash_table (info);
6984 local_got_ents = elf_local_got_ents (input_bfd);
6985 TOCstart = elf_gp (output_bfd);
6986 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6987 sym_hashes = elf_sym_hashes (input_bfd);
6988 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
6989
6990 rel = relocs;
6991 relend = relocs + input_section->reloc_count;
6992 for (; rel < relend; rel++)
6993 {
6994 enum elf_ppc64_reloc_type r_type;
6995 bfd_vma addend;
6996 bfd_reloc_status_type r;
6997 Elf_Internal_Sym *sym;
6998 asection *sec;
6999 struct elf_link_hash_entry *h;
7000 struct elf_link_hash_entry *fdh;
7001 const char *sym_name;
7002 unsigned long r_symndx;
7003 char tls_mask, tls_gd, tls_type;
7004 bfd_vma relocation;
7005 bfd_boolean unresolved_reloc;
7006 bfd_boolean warned;
7007 long insn;
7008 struct ppc_stub_hash_entry *stub_entry;
7009 bfd_vma max_br_offset;
7010 bfd_vma from;
7011
7012 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel->r_info);
7013 r_symndx = ELF64_R_SYM (rel->r_info);
7014 sym = (Elf_Internal_Sym *) 0;
7015 sec = (asection *) 0;
7016 h = (struct elf_link_hash_entry *) 0;
7017 sym_name = (const char *) 0;
7018 unresolved_reloc = FALSE;
7019 warned = FALSE;
7020
7021 if (r_type == R_PPC64_TOC)
7022 {
7023 /* Relocation value is TOC base. Symbol is ignored. */
7024 relocation = TOCstart + TOC_BASE_OFF;
7025 }
7026 else if (r_symndx < symtab_hdr->sh_info)
7027 {
7028 /* It's a local symbol. */
7029 sym = local_syms + r_symndx;
7030 sec = local_sections[r_symndx];
7031 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7032 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
7033 if (elf_section_data (sec) != NULL)
7034 {
7035 long *opd_sym_adjust;
7036
7037 opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
7038 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
7039 relocation += opd_sym_adjust[sym->st_value / 24];
7040 }
7041 }
7042 else
7043 {
7044 /* It's a global symbol. */
7045 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7046 while (h->root.type == bfd_link_hash_indirect
7047 || h->root.type == bfd_link_hash_warning)
7048 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7049 sym_name = h->root.root.string;
7050 relocation = 0;
7051 if (h->root.type == bfd_link_hash_defined
7052 || h->root.type == bfd_link_hash_defweak)
7053 {
7054 sec = h->root.u.def.section;
7055 if (sec->output_section == NULL)
7056 /* Set a flag that will be cleared later if we find a
7057 relocation value for this symbol. output_section
7058 is typically NULL for symbols satisfied by a shared
7059 library. */
7060 unresolved_reloc = TRUE;
7061 else
7062 relocation = (h->root.u.def.value
7063 + sec->output_section->vma
7064 + sec->output_offset);
7065 }
7066 else if (h->root.type == bfd_link_hash_undefweak)
7067 ;
7068 else if (info->shared
7069 && !info->no_undefined
7070 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
7071 ;
7072 else
7073 {
7074 if (! ((*info->callbacks->undefined_symbol)
7075 (info, h->root.root.string, input_bfd, input_section,
7076 rel->r_offset, (!info->shared
7077 || info->no_undefined
7078 || ELF_ST_VISIBILITY (h->other)))))
7079 return FALSE;
7080 warned = TRUE;
7081 }
7082 }
7083
7084 /* TLS optimizations. Replace instruction sequences and relocs
7085 based on information we collected in tls_optimize. We edit
7086 RELOCS so that --emit-relocs will output something sensible
7087 for the final instruction stream. */
7088 tls_mask = 0;
7089 tls_gd = 0;
7090 if (IS_PPC64_TLS_RELOC (r_type))
7091 {
7092 if (h != NULL)
7093 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7094 else if (local_got_ents != NULL)
7095 {
7096 char *lgot_masks;
7097 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7098 tls_mask = lgot_masks[r_symndx];
7099 }
7100 }
7101
7102 /* Ensure reloc mapping code below stays sane. */
7103 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7104 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7105 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7106 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7107 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7108 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7109 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7110 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7111 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7112 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7113 abort ();
7114 switch (r_type)
7115 {
7116 default:
7117 break;
7118
7119 case R_PPC64_TOC16:
7120 case R_PPC64_TOC16_LO:
7121 case R_PPC64_TOC16_DS:
7122 case R_PPC64_TOC16_LO_DS:
7123 {
7124 /* Check for toc tls entries. */
7125 char *toc_tls;
7126 int retval;
7127
7128 retval = get_tls_mask (&toc_tls, &local_syms, rel, input_bfd);
7129 if (retval == 0)
7130 return FALSE;
7131
7132 if (toc_tls)
7133 {
7134 tls_mask = *toc_tls;
7135 if (r_type == R_PPC64_TOC16_DS
7136 || r_type == R_PPC64_TOC16_LO_DS)
7137 goto toctprel;
7138 else
7139 {
7140 /* If we found a GD reloc pair, then we might be
7141 doing a GD->IE transition. */
7142 if (retval == 2)
7143 {
7144 tls_gd = TLS_TPRELGD;
7145 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7146 goto tls_get_addr_check;
7147 }
7148 else if (retval == 3)
7149 {
7150 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7151 goto tls_get_addr_check;
7152 }
7153 }
7154 }
7155 }
7156 break;
7157
7158 case R_PPC64_GOT_TPREL16_DS:
7159 case R_PPC64_GOT_TPREL16_LO_DS:
7160 toctprel:
7161 if (tls_mask != 0
7162 && (tls_mask & TLS_TPREL) == 0)
7163 {
7164 bfd_vma insn;
7165 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7166 insn &= 31 << 21;
7167 insn |= 0x3c0d0000; /* addis 0,13,0 */
7168 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7169 r_type = R_PPC64_TPREL16_HA;
7170 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7171 }
7172 break;
7173
7174 case R_PPC64_TLS:
7175 if (tls_mask == 0)
7176 {
7177 /* Check for toc tls entries. */
7178 char *toc_tls;
7179
7180 if (!get_tls_mask (&toc_tls, &local_syms, rel, input_bfd))
7181 return FALSE;
7182
7183 if (toc_tls)
7184 tls_mask = *toc_tls;
7185 }
7186 if (tls_mask != 0
7187 && (tls_mask & TLS_TPREL) == 0)
7188 {
7189 bfd_vma insn, rtra;
7190 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7191 if ((insn & ((31 << 26) | (31 << 11)))
7192 == ((31 << 26) | (13 << 11)))
7193 rtra = insn & ((1 << 26) - (1 << 16));
7194 else if ((insn & ((31 << 26) | (31 << 16)))
7195 == ((31 << 26) | (13 << 16)))
7196 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7197 else
7198 abort ();
7199 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7200 /* add -> addi. */
7201 insn = 14 << 26;
7202 else if ((insn & (31 << 1)) == 23 << 1
7203 && ((insn & (31 << 6)) < 14 << 6
7204 || ((insn & (31 << 6)) >= 16 << 6
7205 && (insn & (31 << 6)) < 24 << 6)))
7206 /* load and store indexed -> dform. */
7207 insn = (32 | ((insn >> 6) & 31)) << 26;
7208 else if ((insn & (31 << 1)) == 21 << 1
7209 && (insn & (0x1a << 6)) == 0)
7210 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7211 insn = (((58 | ((insn >> 6) & 4)) << 26)
7212 | ((insn >> 6) & 1));
7213 else if ((insn & (31 << 1)) == 21 << 1
7214 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7215 /* lwax -> lwa. */
7216 insn = (58 << 26) | 2;
7217 else
7218 abort ();
7219 insn |= rtra;
7220 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7221 r_type = R_PPC64_TPREL16_LO;
7222 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7223 /* Was PPC64_TLS which sits on insn boundary, now
7224 PPC64_TPREL16_LO which is at insn+2. */
7225 rel->r_offset += 2;
7226 }
7227 break;
7228
7229 case R_PPC64_GOT_TLSGD16_HI:
7230 case R_PPC64_GOT_TLSGD16_HA:
7231 tls_gd = TLS_TPRELGD;
7232 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7233 goto tls_gdld_hi;
7234 break;
7235
7236 case R_PPC64_GOT_TLSLD16_HI:
7237 case R_PPC64_GOT_TLSLD16_HA:
7238 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7239 {
7240 tls_gdld_hi:
7241 if ((tls_mask & tls_gd) != 0)
7242 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7243 + R_PPC64_GOT_TPREL16_DS);
7244 else
7245 {
7246 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7247 rel->r_offset -= 2;
7248 r_type = R_PPC64_NONE;
7249 }
7250 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7251 }
7252 break;
7253
7254 case R_PPC64_GOT_TLSGD16:
7255 case R_PPC64_GOT_TLSGD16_LO:
7256 tls_gd = TLS_TPRELGD;
7257 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7258 goto tls_get_addr_check;
7259 break;
7260
7261 case R_PPC64_GOT_TLSLD16:
7262 case R_PPC64_GOT_TLSLD16_LO:
7263 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7264 {
7265 tls_get_addr_check:
7266 if (rel + 1 < relend)
7267 {
7268 enum elf_ppc64_reloc_type r_type2;
7269 unsigned long r_symndx2;
7270 struct elf_link_hash_entry *h2;
7271 bfd_vma insn1, insn2, insn3;
7272 bfd_vma offset;
7273
7274 /* The next instruction should be a call to
7275 __tls_get_addr. Peek at the reloc to be sure. */
7276 r_type2
7277 = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rel[1].r_info);
7278 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7279 if (r_symndx2 < symtab_hdr->sh_info
7280 || (r_type2 != R_PPC64_REL14
7281 && r_type2 != R_PPC64_REL14_BRTAKEN
7282 && r_type2 != R_PPC64_REL14_BRNTAKEN
7283 && r_type2 != R_PPC64_REL24))
7284 break;
7285
7286 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7287 while (h2->root.type == bfd_link_hash_indirect
7288 || h2->root.type == bfd_link_hash_warning)
7289 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7290 if (h2 == NULL || h2 != htab->tls_get_addr)
7291 break;
7292
7293 /* OK, it checks out. Replace the call. */
7294 offset = rel[1].r_offset;
7295 insn1 = bfd_get_32 (output_bfd,
7296 contents + rel->r_offset - 2);
7297 insn3 = bfd_get_32 (output_bfd,
7298 contents + offset + 4);
7299 if ((tls_mask & tls_gd) != 0)
7300 {
7301 /* IE */
7302 insn1 &= (1 << 26) - (1 << 2);
7303 insn1 |= 58 << 26; /* ld */
7304 insn2 = 0x7c636a14; /* add 3,3,13 */
7305 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7306 if ((tls_mask & TLS_EXPLICIT) == 0)
7307 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7308 + R_PPC64_GOT_TPREL16_DS);
7309 else
7310 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7311 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7312 }
7313 else
7314 {
7315 /* LE */
7316 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7317 insn2 = 0x38630000; /* addi 3,3,0 */
7318 if (tls_gd == 0)
7319 {
7320 /* Was an LD reloc. */
7321 r_symndx = 0;
7322 rel->r_addend = htab->tls_sec->vma + DTP_OFFSET;
7323 rel[1].r_addend = htab->tls_sec->vma + DTP_OFFSET;
7324 }
7325 r_type = R_PPC64_TPREL16_HA;
7326 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7327 rel[1].r_info = ELF64_R_INFO (r_symndx,
7328 R_PPC64_TPREL16_LO);
7329 rel[1].r_offset += 2;
7330 }
7331 if (insn3 == NOP
7332 || insn3 == CROR_151515 || insn3 == CROR_313131)
7333 {
7334 insn3 = insn2;
7335 insn2 = NOP;
7336 rel[1].r_offset += 4;
7337 }
7338 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7339 bfd_put_32 (output_bfd, insn2, contents + offset);
7340 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7341 if (tls_gd == 0)
7342 {
7343 /* We changed the symbol on an LD reloc. Start over
7344 in order to get h, sym, sec etc. right. */
7345 rel--;
7346 continue;
7347 }
7348 }
7349 }
7350 break;
7351
7352 case R_PPC64_DTPMOD64:
7353 if (rel + 1 < relend
7354 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7355 && rel[1].r_offset == rel->r_offset + 8)
7356 {
7357 if ((tls_mask & TLS_GD) == 0)
7358 {
7359 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7360 if ((tls_mask & TLS_TPRELGD) != 0)
7361 r_type = R_PPC64_TPREL64;
7362 else
7363 {
7364 bfd_put_64 (output_bfd, (bfd_vma) 1,
7365 contents + rel->r_offset);
7366 r_type = R_PPC64_NONE;
7367 }
7368 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7369 }
7370 }
7371 else
7372 {
7373 if ((tls_mask & TLS_LD) == 0)
7374 {
7375 bfd_put_64 (output_bfd, (bfd_vma) 1,
7376 contents + rel->r_offset);
7377 r_type = R_PPC64_NONE;
7378 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7379 }
7380 }
7381 break;
7382
7383 case R_PPC64_TPREL64:
7384 if ((tls_mask & TLS_TPREL) == 0)
7385 {
7386 r_type = R_PPC64_NONE;
7387 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7388 }
7389 break;
7390 }
7391
7392 /* Handle other relocations that tweak non-addend part of insn. */
7393 insn = 0;
7394 switch (r_type)
7395 {
7396 default:
7397 break;
7398
7399 /* Branch taken prediction relocations. */
7400 case R_PPC64_ADDR14_BRTAKEN:
7401 case R_PPC64_REL14_BRTAKEN:
7402 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7403 /* Fall thru. */
7404
7405 /* Branch not taken prediction relocations. */
7406 case R_PPC64_ADDR14_BRNTAKEN:
7407 case R_PPC64_REL14_BRNTAKEN:
7408 insn |= bfd_get_32 (output_bfd,
7409 contents + rel->r_offset) & ~(0x01 << 21);
7410 if (is_power4)
7411 {
7412 /* Set 'a' bit. This is 0b00010 in BO field for branch
7413 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7414 for branch on CTR insns (BO == 1a00t or 1a01t). */
7415 if ((insn & (0x14 << 21)) == (0x04 << 21))
7416 insn |= 0x02 << 21;
7417 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7418 insn |= 0x08 << 21;
7419 else
7420 break;
7421 }
7422 else
7423 {
7424 from = (rel->r_offset
7425 + input_section->output_offset
7426 + input_section->output_section->vma);
7427
7428 /* Invert 'y' bit if not the default. */
7429 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7430 insn ^= 0x01 << 21;
7431 }
7432
7433 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + rel->r_offset);
7434 break;
7435
7436 case R_PPC64_REL24:
7437 /* A REL24 branching to a linkage function is followed by a
7438 nop. We replace the nop with a ld in order to restore
7439 the TOC base pointer. Only calls to shared objects need
7440 to alter the TOC base. These are recognized by their
7441 need for a PLT entry. */
7442 if (h != NULL
7443 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
7444 && fdh->plt.plist != NULL
7445 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7446 rel, htab)) != NULL)
7447 {
7448 bfd_boolean can_plt_call = 0;
7449
7450 if (rel->r_offset + 8 <= input_section->_cooked_size)
7451 {
7452 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7453 if (insn == NOP
7454 || insn == CROR_151515 || insn == CROR_313131)
7455 {
7456 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
7457 contents + rel->r_offset + 4);
7458 can_plt_call = 1;
7459 }
7460 }
7461
7462 if (!can_plt_call)
7463 {
7464 /* If this is a plain branch rather than a branch
7465 and link, don't require a nop. */
7466 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7467 if ((insn & 1) == 0)
7468 can_plt_call = 1;
7469 }
7470
7471 if (can_plt_call)
7472 {
7473 relocation = (stub_entry->stub_offset
7474 + stub_entry->stub_sec->output_offset
7475 + stub_entry->stub_sec->output_section->vma);
7476 unresolved_reloc = FALSE;
7477 }
7478 }
7479
7480 if (h != NULL
7481 && h->root.type == bfd_link_hash_undefweak
7482 && relocation == 0
7483 && rel->r_addend == 0)
7484 {
7485 /* Tweak calls to undefined weak functions to point at a
7486 blr. We can thus call a weak function without first
7487 checking whether the function is defined. We have a
7488 blr at the end of .sfpr. */
7489 BFD_ASSERT (htab->sfpr->_raw_size != 0);
7490 relocation = (htab->sfpr->_raw_size - 4
7491 + htab->sfpr->output_offset
7492 + htab->sfpr->output_section->vma);
7493 from = (rel->r_offset
7494 + input_section->output_offset
7495 + input_section->output_section->vma);
7496
7497 /* But let's not be silly about it. If the blr isn't in
7498 reach, just go to the next instruction. */
7499 if (relocation - from + (1 << 25) >= (1 << 26)
7500 || htab->sfpr->_raw_size == 0)
7501 relocation = from + 4;
7502 }
7503 break;
7504 }
7505
7506 /* Set `addend'. */
7507 tls_type = 0;
7508 addend = rel->r_addend;
7509 switch (r_type)
7510 {
7511 default:
7512 (*_bfd_error_handler)
7513 (_("%s: unknown relocation type %d for symbol %s"),
7514 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
7515
7516 bfd_set_error (bfd_error_bad_value);
7517 ret = FALSE;
7518 continue;
7519
7520 case R_PPC64_NONE:
7521 case R_PPC64_TLS:
7522 case R_PPC64_GNU_VTINHERIT:
7523 case R_PPC64_GNU_VTENTRY:
7524 continue;
7525
7526 /* GOT16 relocations. Like an ADDR16 using the symbol's
7527 address in the GOT as relocation value instead of the
7528 symbol's value itself. Also, create a GOT entry for the
7529 symbol and put the symbol value there. */
7530 case R_PPC64_GOT_TLSGD16:
7531 case R_PPC64_GOT_TLSGD16_LO:
7532 case R_PPC64_GOT_TLSGD16_HI:
7533 case R_PPC64_GOT_TLSGD16_HA:
7534 tls_type = TLS_TLS | TLS_GD;
7535 goto dogot;
7536
7537 case R_PPC64_GOT_TLSLD16:
7538 case R_PPC64_GOT_TLSLD16_LO:
7539 case R_PPC64_GOT_TLSLD16_HI:
7540 case R_PPC64_GOT_TLSLD16_HA:
7541 tls_type = TLS_TLS | TLS_LD;
7542 goto dogot;
7543
7544 case R_PPC64_GOT_TPREL16_DS:
7545 case R_PPC64_GOT_TPREL16_LO_DS:
7546 case R_PPC64_GOT_TPREL16_HI:
7547 case R_PPC64_GOT_TPREL16_HA:
7548 tls_type = TLS_TLS | TLS_TPREL;
7549 goto dogot;
7550
7551 case R_PPC64_GOT_DTPREL16_DS:
7552 case R_PPC64_GOT_DTPREL16_LO_DS:
7553 case R_PPC64_GOT_DTPREL16_HI:
7554 case R_PPC64_GOT_DTPREL16_HA:
7555 tls_type = TLS_TLS | TLS_DTPREL;
7556 goto dogot;
7557
7558 case R_PPC64_GOT16:
7559 case R_PPC64_GOT16_LO:
7560 case R_PPC64_GOT16_HI:
7561 case R_PPC64_GOT16_HA:
7562 case R_PPC64_GOT16_DS:
7563 case R_PPC64_GOT16_LO_DS:
7564 dogot:
7565 {
7566 /* Relocation is to the entry for this symbol in the global
7567 offset table. */
7568 bfd_vma *offp;
7569 bfd_vma off;
7570 unsigned long indx = 0;
7571
7572 if (htab->sgot == NULL)
7573 abort ();
7574
7575 if (tls_type == (TLS_TLS | TLS_LD)
7576 && (h == NULL
7577 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
7578 offp = &htab->tlsld_got.offset;
7579 else
7580 {
7581 struct got_entry *ent;
7582
7583 if (h != NULL)
7584 {
7585 bfd_boolean dyn = htab->elf.dynamic_sections_created;
7586 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7587 || (info->shared
7588 && (info->symbolic
7589 || h->dynindx == -1
7590 || (h->elf_link_hash_flags
7591 & ELF_LINK_FORCED_LOCAL))
7592 && (h->elf_link_hash_flags
7593 & ELF_LINK_HASH_DEF_REGULAR)))
7594 /* This is actually a static link, or it is a
7595 -Bsymbolic link and the symbol is defined
7596 locally, or the symbol was forced to be local
7597 because of a version file. */
7598 ;
7599 else
7600 {
7601 indx = h->dynindx;
7602 unresolved_reloc = FALSE;
7603 }
7604 ent = h->got.glist;
7605 }
7606 else
7607 {
7608 if (local_got_ents == NULL)
7609 abort ();
7610 ent = local_got_ents[r_symndx];
7611 }
7612
7613 for (; ent != NULL; ent = ent->next)
7614 if (ent->addend == rel->r_addend
7615 && ent->tls_type == tls_type)
7616 break;
7617 if (ent == NULL)
7618 abort ();
7619 offp = &ent->got.offset;
7620 }
7621
7622 /* The offset must always be a multiple of 8. We use the
7623 least significant bit to record whether we have already
7624 processed this entry. */
7625 off = *offp;
7626 if ((off & 1) != 0)
7627 off &= ~1;
7628 else
7629 {
7630 /* Generate relocs for the dynamic linker, except in
7631 the case of TLSLD where we'll use one entry per
7632 module. */
7633 *offp = off | 1;
7634 if (info->shared || indx != 0)
7635 {
7636 outrel.r_offset = (htab->sgot->output_section->vma
7637 + htab->sgot->output_offset
7638 + off);
7639 if (tls_type & (TLS_LD | TLS_GD))
7640 {
7641 outrel.r_addend = 0;
7642 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
7643 if (tls_type == (TLS_TLS | TLS_GD))
7644 {
7645 loc = htab->srelgot->contents;
7646 loc += (htab->srelgot->reloc_count++
7647 * sizeof (Elf64_External_Rela));
7648 bfd_elf64_swap_reloca_out (output_bfd,
7649 &outrel, loc);
7650 outrel.r_offset += 8;
7651 outrel.r_info
7652 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
7653 }
7654 }
7655 else if (tls_type == (TLS_TLS | TLS_DTPREL))
7656 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
7657 else if (tls_type == (TLS_TLS | TLS_TPREL))
7658 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
7659 else if (indx == 0)
7660 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
7661 else
7662 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
7663 outrel.r_addend = rel->r_addend;
7664 if (indx == 0)
7665 {
7666 outrel.r_addend += relocation;
7667 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
7668 outrel.r_addend -= htab->tls_sec->vma;
7669 }
7670 loc = htab->srelgot->contents;
7671 loc += (htab->srelgot->reloc_count++
7672 * sizeof (Elf64_External_Rela));
7673 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
7674 }
7675
7676 /* Init the .got section contents if we're not
7677 emitting a reloc. */
7678 else
7679 {
7680 relocation += rel->r_addend;
7681 if (tls_type == (TLS_TLS | TLS_LD))
7682 relocation = 1;
7683 else if (tls_type != 0)
7684 {
7685 relocation -= htab->tls_sec->vma + DTP_OFFSET;
7686 if (tls_type == (TLS_TLS | TLS_TPREL))
7687 relocation += DTP_OFFSET - TP_OFFSET;
7688
7689 if (tls_type == (TLS_TLS | TLS_GD))
7690 {
7691 bfd_put_64 (output_bfd, relocation,
7692 htab->sgot->contents + off + 8);
7693 relocation = 1;
7694 }
7695 }
7696
7697 bfd_put_64 (output_bfd, relocation,
7698 htab->sgot->contents + off);
7699 }
7700 }
7701
7702 if (off >= (bfd_vma) -2)
7703 abort ();
7704
7705 relocation = htab->sgot->output_offset + off;
7706
7707 /* TOC base (r2) is TOC start plus 0x8000. */
7708 addend = - TOC_BASE_OFF;
7709 }
7710 break;
7711
7712 case R_PPC64_PLT16_HA:
7713 case R_PPC64_PLT16_HI:
7714 case R_PPC64_PLT16_LO:
7715 case R_PPC64_PLT32:
7716 case R_PPC64_PLT64:
7717 /* Relocation is to the entry for this symbol in the
7718 procedure linkage table. */
7719
7720 /* Resolve a PLT reloc against a local symbol directly,
7721 without using the procedure linkage table. */
7722 if (h == NULL)
7723 break;
7724
7725 /* It's possible that we didn't make a PLT entry for this
7726 symbol. This happens when statically linking PIC code,
7727 or when using -Bsymbolic. Go find a match if there is a
7728 PLT entry. */
7729 if (htab->splt != NULL)
7730 {
7731 struct plt_entry *ent;
7732 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7733 if (ent->addend == rel->r_addend
7734 && ent->plt.offset != (bfd_vma) -1)
7735 {
7736 relocation = (htab->splt->output_section->vma
7737 + htab->splt->output_offset
7738 + ent->plt.offset);
7739 unresolved_reloc = FALSE;
7740 }
7741 }
7742 break;
7743
7744 /* TOC16 relocs. We want the offset relative to the TOC base,
7745 which is the address of the start of the TOC plus 0x8000.
7746 The TOC consists of sections .got, .toc, .tocbss, and .plt,
7747 in this order. */
7748 case R_PPC64_TOC16:
7749 case R_PPC64_TOC16_LO:
7750 case R_PPC64_TOC16_HI:
7751 case R_PPC64_TOC16_DS:
7752 case R_PPC64_TOC16_LO_DS:
7753 case R_PPC64_TOC16_HA:
7754 addend -= TOCstart + TOC_BASE_OFF;
7755 break;
7756
7757 /* Relocate against the beginning of the section. */
7758 case R_PPC64_SECTOFF:
7759 case R_PPC64_SECTOFF_LO:
7760 case R_PPC64_SECTOFF_HI:
7761 case R_PPC64_SECTOFF_DS:
7762 case R_PPC64_SECTOFF_LO_DS:
7763 case R_PPC64_SECTOFF_HA:
7764 if (sec != (asection *) 0)
7765 addend -= sec->output_section->vma;
7766 break;
7767
7768 case R_PPC64_REL14:
7769 case R_PPC64_REL14_BRNTAKEN:
7770 case R_PPC64_REL14_BRTAKEN:
7771 case R_PPC64_REL24:
7772 break;
7773
7774 case R_PPC64_TPREL16:
7775 case R_PPC64_TPREL16_LO:
7776 case R_PPC64_TPREL16_HI:
7777 case R_PPC64_TPREL16_HA:
7778 case R_PPC64_TPREL16_DS:
7779 case R_PPC64_TPREL16_LO_DS:
7780 case R_PPC64_TPREL16_HIGHER:
7781 case R_PPC64_TPREL16_HIGHERA:
7782 case R_PPC64_TPREL16_HIGHEST:
7783 case R_PPC64_TPREL16_HIGHESTA:
7784 addend -= htab->tls_sec->vma + TP_OFFSET;
7785 if (info->shared)
7786 /* The TPREL16 relocs shouldn't really be used in shared
7787 libs as they will result in DT_TEXTREL being set, but
7788 support them anyway. */
7789 goto dodyn;
7790 break;
7791
7792 case R_PPC64_DTPREL16:
7793 case R_PPC64_DTPREL16_LO:
7794 case R_PPC64_DTPREL16_HI:
7795 case R_PPC64_DTPREL16_HA:
7796 case R_PPC64_DTPREL16_DS:
7797 case R_PPC64_DTPREL16_LO_DS:
7798 case R_PPC64_DTPREL16_HIGHER:
7799 case R_PPC64_DTPREL16_HIGHERA:
7800 case R_PPC64_DTPREL16_HIGHEST:
7801 case R_PPC64_DTPREL16_HIGHESTA:
7802 addend -= htab->tls_sec->vma + DTP_OFFSET;
7803 break;
7804
7805 case R_PPC64_DTPMOD64:
7806 relocation = 1;
7807 addend = 0;
7808 goto dodyn;
7809
7810 case R_PPC64_TPREL64:
7811 addend -= htab->tls_sec->vma + TP_OFFSET;
7812 goto dodyn;
7813
7814 case R_PPC64_DTPREL64:
7815 addend -= htab->tls_sec->vma + DTP_OFFSET;
7816 /* Fall thru */
7817
7818 /* Relocations that may need to be propagated if this is a
7819 dynamic object. */
7820 case R_PPC64_REL30:
7821 case R_PPC64_REL32:
7822 case R_PPC64_REL64:
7823 case R_PPC64_ADDR14:
7824 case R_PPC64_ADDR14_BRNTAKEN:
7825 case R_PPC64_ADDR14_BRTAKEN:
7826 case R_PPC64_ADDR16:
7827 case R_PPC64_ADDR16_DS:
7828 case R_PPC64_ADDR16_HA:
7829 case R_PPC64_ADDR16_HI:
7830 case R_PPC64_ADDR16_HIGHER:
7831 case R_PPC64_ADDR16_HIGHERA:
7832 case R_PPC64_ADDR16_HIGHEST:
7833 case R_PPC64_ADDR16_HIGHESTA:
7834 case R_PPC64_ADDR16_LO:
7835 case R_PPC64_ADDR16_LO_DS:
7836 case R_PPC64_ADDR24:
7837 case R_PPC64_ADDR32:
7838 case R_PPC64_ADDR64:
7839 case R_PPC64_UADDR16:
7840 case R_PPC64_UADDR32:
7841 case R_PPC64_UADDR64:
7842 /* r_symndx will be zero only for relocs against symbols
7843 from removed linkonce sections, or sections discarded by
7844 a linker script. */
7845 dodyn:
7846 if (r_symndx == 0)
7847 break;
7848 /* Fall thru. */
7849
7850 case R_PPC64_TOC:
7851 if ((input_section->flags & SEC_ALLOC) == 0)
7852 break;
7853
7854 if (NO_OPD_RELOCS && is_opd)
7855 break;
7856
7857 if ((info->shared
7858 && (MUST_BE_DYN_RELOC (r_type)
7859 || (h != NULL
7860 && h->dynindx != -1
7861 && (! info->symbolic
7862 || (h->elf_link_hash_flags
7863 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
7864 || (ELIMINATE_COPY_RELOCS
7865 && !info->shared
7866 && h != NULL
7867 && h->dynindx != -1
7868 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
7869 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
7870 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
7871 {
7872 Elf_Internal_Rela outrel;
7873 bfd_boolean skip, relocate;
7874 asection *sreloc;
7875 bfd_byte *loc;
7876
7877 /* When generating a dynamic object, these relocations
7878 are copied into the output file to be resolved at run
7879 time. */
7880
7881 skip = FALSE;
7882 relocate = FALSE;
7883
7884 outrel.r_offset =
7885 _bfd_elf_section_offset (output_bfd, info, input_section,
7886 rel->r_offset);
7887 if (outrel.r_offset == (bfd_vma) -1)
7888 skip = TRUE;
7889 else if (outrel.r_offset == (bfd_vma) -2)
7890 skip = TRUE, relocate = TRUE;
7891 outrel.r_offset += (input_section->output_section->vma
7892 + input_section->output_offset);
7893 outrel.r_addend = rel->r_addend;
7894
7895 if (skip)
7896 memset (&outrel, 0, sizeof outrel);
7897 else if (h != NULL
7898 && h->dynindx != -1
7899 && !is_opd
7900 && (!MUST_BE_DYN_RELOC (r_type)
7901 || !info->shared
7902 || !info->symbolic
7903 || (h->elf_link_hash_flags
7904 & ELF_LINK_HASH_DEF_REGULAR) == 0))
7905 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
7906 else
7907 {
7908 /* This symbol is local, or marked to become local,
7909 or this is an opd section reloc which must point
7910 at a local function. */
7911 outrel.r_addend += relocation;
7912 /* ??? why? */
7913 relocate = TRUE;
7914 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
7915 {
7916 if (is_opd && h != NULL)
7917 {
7918 /* Lie about opd entries. This case occurs
7919 when building shared libraries and we
7920 reference a function in another shared
7921 lib. The same thing happens for a weak
7922 definition in an application that's
7923 overridden by a strong definition in a
7924 shared lib. (I believe this is a generic
7925 bug in binutils handling of weak syms.)
7926 In these cases we won't use the opd
7927 entry in this lib. */
7928 unresolved_reloc = FALSE;
7929 }
7930 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
7931 }
7932 else
7933 {
7934 long indx = 0;
7935
7936 if (bfd_is_abs_section (sec))
7937 ;
7938 else if (sec == NULL || sec->owner == NULL)
7939 {
7940 bfd_set_error (bfd_error_bad_value);
7941 return FALSE;
7942 }
7943 else
7944 {
7945 asection *osec;
7946
7947 osec = sec->output_section;
7948 indx = elf_section_data (osec)->dynindx;
7949
7950 /* We are turning this relocation into one
7951 against a section symbol, so subtract out
7952 the output section's address but not the
7953 offset of the input section in the output
7954 section. */
7955 outrel.r_addend -= osec->vma;
7956 }
7957
7958 outrel.r_info = ELF64_R_INFO (indx, r_type);
7959 }
7960 }
7961
7962 sreloc = elf_section_data (input_section)->sreloc;
7963 if (sreloc == NULL)
7964 abort ();
7965
7966 loc = sreloc->contents;
7967 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
7968 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
7969
7970 /* If this reloc is against an external symbol, it will
7971 be computed at runtime, so there's no need to do
7972 anything now. */
7973 if (! relocate)
7974 continue;
7975 }
7976 break;
7977
7978 case R_PPC64_COPY:
7979 case R_PPC64_GLOB_DAT:
7980 case R_PPC64_JMP_SLOT:
7981 case R_PPC64_RELATIVE:
7982 /* We shouldn't ever see these dynamic relocs in relocatable
7983 files. */
7984 /* Fall through. */
7985
7986 case R_PPC64_PLTGOT16:
7987 case R_PPC64_PLTGOT16_DS:
7988 case R_PPC64_PLTGOT16_HA:
7989 case R_PPC64_PLTGOT16_HI:
7990 case R_PPC64_PLTGOT16_LO:
7991 case R_PPC64_PLTGOT16_LO_DS:
7992 case R_PPC64_PLTREL32:
7993 case R_PPC64_PLTREL64:
7994 /* These ones haven't been implemented yet. */
7995
7996 (*_bfd_error_handler)
7997 (_("%s: relocation %s is not supported for symbol %s."),
7998 bfd_archive_filename (input_bfd),
7999 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
8000
8001 bfd_set_error (bfd_error_invalid_operation);
8002 ret = FALSE;
8003 continue;
8004 }
8005
8006 /* Do any further special processing. */
8007 switch (r_type)
8008 {
8009 default:
8010 break;
8011
8012 case R_PPC64_ADDR16_HA:
8013 case R_PPC64_ADDR16_HIGHERA:
8014 case R_PPC64_ADDR16_HIGHESTA:
8015 case R_PPC64_GOT16_HA:
8016 case R_PPC64_PLTGOT16_HA:
8017 case R_PPC64_PLT16_HA:
8018 case R_PPC64_TOC16_HA:
8019 case R_PPC64_SECTOFF_HA:
8020 case R_PPC64_TPREL16_HA:
8021 case R_PPC64_DTPREL16_HA:
8022 case R_PPC64_GOT_TLSGD16_HA:
8023 case R_PPC64_GOT_TLSLD16_HA:
8024 case R_PPC64_GOT_TPREL16_HA:
8025 case R_PPC64_GOT_DTPREL16_HA:
8026 case R_PPC64_TPREL16_HIGHER:
8027 case R_PPC64_TPREL16_HIGHERA:
8028 case R_PPC64_TPREL16_HIGHEST:
8029 case R_PPC64_TPREL16_HIGHESTA:
8030 case R_PPC64_DTPREL16_HIGHER:
8031 case R_PPC64_DTPREL16_HIGHERA:
8032 case R_PPC64_DTPREL16_HIGHEST:
8033 case R_PPC64_DTPREL16_HIGHESTA:
8034 /* It's just possible that this symbol is a weak symbol
8035 that's not actually defined anywhere. In that case,
8036 'sec' would be NULL, and we should leave the symbol
8037 alone (it will be set to zero elsewhere in the link). */
8038 if (sec != NULL)
8039 /* Add 0x10000 if sign bit in 0:15 is set.
8040 Bits 0:15 are not used. */
8041 addend += 0x8000;
8042 break;
8043
8044 case R_PPC64_ADDR16_DS:
8045 case R_PPC64_ADDR16_LO_DS:
8046 case R_PPC64_GOT16_DS:
8047 case R_PPC64_GOT16_LO_DS:
8048 case R_PPC64_PLT16_LO_DS:
8049 case R_PPC64_SECTOFF_DS:
8050 case R_PPC64_SECTOFF_LO_DS:
8051 case R_PPC64_TOC16_DS:
8052 case R_PPC64_TOC16_LO_DS:
8053 case R_PPC64_PLTGOT16_DS:
8054 case R_PPC64_PLTGOT16_LO_DS:
8055 case R_PPC64_GOT_TPREL16_DS:
8056 case R_PPC64_GOT_TPREL16_LO_DS:
8057 case R_PPC64_GOT_DTPREL16_DS:
8058 case R_PPC64_GOT_DTPREL16_LO_DS:
8059 case R_PPC64_TPREL16_DS:
8060 case R_PPC64_TPREL16_LO_DS:
8061 case R_PPC64_DTPREL16_DS:
8062 case R_PPC64_DTPREL16_LO_DS:
8063 if (((relocation + addend) & 3) != 0)
8064 {
8065 (*_bfd_error_handler)
8066 (_("%s: error: relocation %s not a multiple of 4"),
8067 bfd_archive_filename (input_bfd),
8068 ppc64_elf_howto_table[(int) r_type]->name);
8069 bfd_set_error (bfd_error_bad_value);
8070 ret = FALSE;
8071 continue;
8072 }
8073 break;
8074
8075 case R_PPC64_REL14:
8076 case R_PPC64_REL14_BRNTAKEN:
8077 case R_PPC64_REL14_BRTAKEN:
8078 max_br_offset = 1 << 15;
8079 goto branch_check;
8080
8081 case R_PPC64_REL24:
8082 max_br_offset = 1 << 25;
8083
8084 branch_check:
8085 /* If the branch is out of reach, then redirect the
8086 call to the local stub for this function. */
8087 from = (rel->r_offset
8088 + input_section->output_offset
8089 + input_section->output_section->vma);
8090 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
8091 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8092 rel, htab)) != NULL)
8093 {
8094 /* Munge up the value and addend so that we call the stub
8095 rather than the procedure directly. */
8096 relocation = (stub_entry->stub_offset
8097 + stub_entry->stub_sec->output_offset
8098 + stub_entry->stub_sec->output_section->vma);
8099 addend = 0;
8100 }
8101 break;
8102 }
8103
8104 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8105 because such sections are not SEC_ALLOC and thus ld.so will
8106 not process them. */
8107 if (unresolved_reloc
8108 && !((input_section->flags & SEC_DEBUGGING) != 0
8109 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8110 {
8111 (*_bfd_error_handler)
8112 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8113 bfd_archive_filename (input_bfd),
8114 bfd_get_section_name (input_bfd, input_section),
8115 (long) rel->r_offset,
8116 ppc64_elf_howto_table[(int) r_type]->name,
8117 h->root.root.string);
8118 ret = FALSE;
8119 }
8120
8121 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8122 input_bfd,
8123 input_section,
8124 contents,
8125 rel->r_offset,
8126 relocation,
8127 addend);
8128
8129 if (r != bfd_reloc_ok)
8130 {
8131 if (sym_name == NULL)
8132 sym_name = "(null)";
8133 if (r == bfd_reloc_overflow)
8134 {
8135 if (warned)
8136 continue;
8137 if (h != NULL
8138 && h->root.type == bfd_link_hash_undefweak
8139 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
8140 {
8141 /* Assume this is a call protected by other code that
8142 detects the symbol is undefined. If this is the case,
8143 we can safely ignore the overflow. If not, the
8144 program is hosed anyway, and a little warning isn't
8145 going to help. */
8146
8147 continue;
8148 }
8149
8150 if (!((*info->callbacks->reloc_overflow)
8151 (info, sym_name, ppc64_elf_howto_table[(int) r_type]->name,
8152 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8153 return FALSE;
8154 }
8155 else
8156 {
8157 (*_bfd_error_handler)
8158 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8159 bfd_archive_filename (input_bfd),
8160 bfd_get_section_name (input_bfd, input_section),
8161 (long) rel->r_offset,
8162 ppc64_elf_howto_table[(int) r_type]->name,
8163 sym_name,
8164 (int) r);
8165 ret = FALSE;
8166 }
8167 }
8168 }
8169
8170 return ret;
8171 }
8172
8173 /* Finish up dynamic symbol handling. We set the contents of various
8174 dynamic sections here. */
8175
8176 static bfd_boolean
8177 ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
8178 bfd *output_bfd;
8179 struct bfd_link_info *info;
8180 struct elf_link_hash_entry *h;
8181 Elf_Internal_Sym *sym;
8182 {
8183 struct ppc_link_hash_table *htab;
8184 bfd *dynobj;
8185
8186 htab = ppc_hash_table (info);
8187 dynobj = htab->elf.dynobj;
8188
8189 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8190 {
8191 struct plt_entry *ent;
8192 Elf_Internal_Rela rela;
8193 bfd_byte *loc;
8194
8195 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8196 if (ent->plt.offset != (bfd_vma) -1)
8197 {
8198 /* This symbol has an entry in the procedure linkage
8199 table. Set it up. */
8200
8201 if (htab->splt == NULL
8202 || htab->srelplt == NULL
8203 || htab->sglink == NULL)
8204 abort ();
8205
8206 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8207 fill in the PLT entry. */
8208 rela.r_offset = (htab->splt->output_section->vma
8209 + htab->splt->output_offset
8210 + ent->plt.offset);
8211 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8212 rela.r_addend = ent->addend;
8213
8214 loc = htab->srelplt->contents;
8215 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8216 * sizeof (Elf64_External_Rela));
8217 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8218 }
8219 }
8220
8221 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8222 {
8223 Elf_Internal_Rela rela;
8224 bfd_byte *loc;
8225
8226 /* This symbol needs a copy reloc. Set it up. */
8227
8228 if (h->dynindx == -1
8229 || (h->root.type != bfd_link_hash_defined
8230 && h->root.type != bfd_link_hash_defweak)
8231 || htab->srelbss == NULL)
8232 abort ();
8233
8234 rela.r_offset = (h->root.u.def.value
8235 + h->root.u.def.section->output_section->vma
8236 + h->root.u.def.section->output_offset);
8237 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8238 rela.r_addend = 0;
8239 loc = htab->srelbss->contents;
8240 loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
8241 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8242 }
8243
8244 /* Mark some specially defined symbols as absolute. */
8245 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8246 sym->st_shndx = SHN_ABS;
8247
8248 return TRUE;
8249 }
8250
8251 /* Used to decide how to sort relocs in an optimal manner for the
8252 dynamic linker, before writing them out. */
8253
8254 static enum elf_reloc_type_class
8255 ppc64_elf_reloc_type_class (rela)
8256 const Elf_Internal_Rela *rela;
8257 {
8258 enum elf_ppc64_reloc_type r_type;
8259
8260 r_type = (enum elf_ppc64_reloc_type) ELF64_R_TYPE (rela->r_info);
8261 switch (r_type)
8262 {
8263 case R_PPC64_RELATIVE:
8264 return reloc_class_relative;
8265 case R_PPC64_JMP_SLOT:
8266 return reloc_class_plt;
8267 case R_PPC64_COPY:
8268 return reloc_class_copy;
8269 default:
8270 return reloc_class_normal;
8271 }
8272 }
8273
8274 /* Finish up the dynamic sections. */
8275
8276 static bfd_boolean
8277 ppc64_elf_finish_dynamic_sections (output_bfd, info)
8278 bfd *output_bfd;
8279 struct bfd_link_info *info;
8280 {
8281 struct ppc_link_hash_table *htab;
8282 bfd *dynobj;
8283 asection *sdyn;
8284
8285 htab = ppc_hash_table (info);
8286 dynobj = htab->elf.dynobj;
8287 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8288
8289 if (htab->elf.dynamic_sections_created)
8290 {
8291 Elf64_External_Dyn *dyncon, *dynconend;
8292
8293 if (sdyn == NULL || htab->sgot == NULL)
8294 abort ();
8295
8296 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8297 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
8298 for (; dyncon < dynconend; dyncon++)
8299 {
8300 Elf_Internal_Dyn dyn;
8301 asection *s;
8302
8303 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8304
8305 switch (dyn.d_tag)
8306 {
8307 default:
8308 continue;
8309
8310 case DT_PPC64_GLINK:
8311 s = htab->sglink;
8312 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8313 break;
8314
8315 case DT_PPC64_OPD:
8316 s = bfd_get_section_by_name (output_bfd, ".opd");
8317 if (s == NULL)
8318 continue;
8319 dyn.d_un.d_ptr = s->vma;
8320 break;
8321
8322 case DT_PPC64_OPDSZ:
8323 s = bfd_get_section_by_name (output_bfd, ".opd");
8324 if (s == NULL)
8325 continue;
8326 dyn.d_un.d_val = s->_raw_size;
8327 break;
8328
8329 case DT_PLTGOT:
8330 s = htab->splt;
8331 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8332 break;
8333
8334 case DT_JMPREL:
8335 s = htab->srelplt;
8336 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8337 break;
8338
8339 case DT_PLTRELSZ:
8340 dyn.d_un.d_val = htab->srelplt->_raw_size;
8341 break;
8342
8343 case DT_RELASZ:
8344 /* Don't count procedure linkage table relocs in the
8345 overall reloc count. */
8346 s = htab->srelplt;
8347 if (s == NULL)
8348 continue;
8349 dyn.d_un.d_val -= s->_raw_size;
8350 break;
8351
8352 case DT_RELA:
8353 /* We may not be using the standard ELF linker script.
8354 If .rela.plt is the first .rela section, we adjust
8355 DT_RELA to not include it. */
8356 s = htab->srelplt;
8357 if (s == NULL)
8358 continue;
8359 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8360 continue;
8361 dyn.d_un.d_ptr += s->_raw_size;
8362 break;
8363 }
8364
8365 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8366 }
8367 }
8368
8369 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
8370 {
8371 /* Fill in the first entry in the global offset table.
8372 We use it to hold the link-time TOCbase. */
8373 bfd_put_64 (output_bfd,
8374 elf_gp (output_bfd) + TOC_BASE_OFF,
8375 htab->sgot->contents);
8376
8377 /* Set .got entry size. */
8378 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
8379 }
8380
8381 if (htab->splt != NULL && htab->splt->_raw_size != 0)
8382 {
8383 /* Set .plt entry size. */
8384 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
8385 = PLT_ENTRY_SIZE;
8386 }
8387
8388 return TRUE;
8389 }
8390
8391 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
8392 #define TARGET_LITTLE_NAME "elf64-powerpcle"
8393 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
8394 #define TARGET_BIG_NAME "elf64-powerpc"
8395 #define ELF_ARCH bfd_arch_powerpc
8396 #define ELF_MACHINE_CODE EM_PPC64
8397 #define ELF_MAXPAGESIZE 0x10000
8398 #define elf_info_to_howto ppc64_elf_info_to_howto
8399
8400 #ifdef EM_CYGNUS_POWERPC
8401 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
8402 #endif
8403
8404 #ifdef EM_PPC_OLD
8405 #define ELF_MACHINE_ALT2 EM_PPC_OLD
8406 #endif
8407
8408 #define elf_backend_want_got_sym 0
8409 #define elf_backend_want_plt_sym 0
8410 #define elf_backend_plt_alignment 3
8411 #define elf_backend_plt_not_loaded 1
8412 #define elf_backend_got_symbol_offset 0
8413 #define elf_backend_got_header_size 8
8414 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
8415 #define elf_backend_can_gc_sections 1
8416 #define elf_backend_can_refcount 1
8417 #define elf_backend_rela_normal 1
8418
8419 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
8420 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
8421 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
8422 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
8423 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
8424
8425 #define elf_backend_object_p ppc64_elf_object_p
8426 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
8427 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
8428 #define elf_backend_check_relocs ppc64_elf_check_relocs
8429 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
8430 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
8431 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
8432 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
8433 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
8434 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
8435 #define elf_backend_relocate_section ppc64_elf_relocate_section
8436 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
8437 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
8438 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
8439
8440 #include "elf64-target.h"
git-cvsimport of binutils cvsroot