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* elf64-ppc.c (ppc64_elf_relocate_section): Combine handling of
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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1/* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
7
8 This file is part of BFD, the Binary File Descriptor library.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23
24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
33#include "elf/ppc64.h"
34#include "elf64-ppc.h"
35
36static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38static bfd_reloc_status_type ppc64_elf_brtaken_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40static bfd_reloc_status_type ppc64_elf_sectoff_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44static bfd_reloc_status_type ppc64_elf_toc_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48static bfd_reloc_status_type ppc64_elf_toc64_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50static bfd_reloc_status_type ppc64_elf_unhandled_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52
53
54#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
55#define TARGET_LITTLE_NAME "elf64-powerpcle"
56#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
57#define TARGET_BIG_NAME "elf64-powerpc"
58#define ELF_ARCH bfd_arch_powerpc
59#define ELF_MACHINE_CODE EM_PPC64
60#define ELF_MAXPAGESIZE 0x10000
61#define elf_info_to_howto ppc64_elf_info_to_howto
62
63#define elf_backend_want_got_sym 0
64#define elf_backend_want_plt_sym 0
65#define elf_backend_plt_alignment 3
66#define elf_backend_plt_not_loaded 1
67#define elf_backend_got_symbol_offset 0
68#define elf_backend_got_header_size 8
69#define elf_backend_can_gc_sections 1
70#define elf_backend_can_refcount 1
71#define elf_backend_rela_normal 1
72
73#define bfd_elf64_mkobject ppc64_elf_mkobject
74#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
75#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
76#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
77#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
78#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
79
80#define elf_backend_object_p ppc64_elf_object_p
81#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
82#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
83#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
84#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
85#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
86#define elf_backend_check_relocs ppc64_elf_check_relocs
87#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
88#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
89#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
90#define elf_backend_hide_symbol ppc64_elf_hide_symbol
91#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
92#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
93#define elf_backend_relocate_section ppc64_elf_relocate_section
94#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
95#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
96#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
97#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
98#define elf_backend_special_sections ppc64_elf_special_sections
99
100/* The name of the dynamic interpreter. This is put in the .interp
101 section. */
102#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
103
104/* The size in bytes of an entry in the procedure linkage table. */
105#define PLT_ENTRY_SIZE 24
106
107/* The initial size of the plt reserved for the dynamic linker. */
108#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
109
110/* TOC base pointers offset from start of TOC. */
111#define TOC_BASE_OFF 0x8000
112
113/* Offset of tp and dtp pointers from start of TLS block. */
114#define TP_OFFSET 0x7000
115#define DTP_OFFSET 0x8000
116
117/* .plt call stub instructions. The normal stub is like this, but
118 sometimes the .plt entry crosses a 64k boundary and we need to
119 insert an addis to adjust r12. */
120#define PLT_CALL_STUB_SIZE (7*4)
121#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
122#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
123#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
124#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
125#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
126 /* ld %r11,xxx+16@l(%r12) */
127#define BCTR 0x4e800420 /* bctr */
128
129
130#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
131#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
132
133#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
134
135/* glink call stub instructions. We enter with the index in R0, and the
136 address of glink entry in CTR. From that, we can calculate PLT0. */
137#define GLINK_CALL_STUB_SIZE (16*4)
138#define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
139#define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
140#define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
141#define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
142#define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
143#define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
144#define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
145 /* sub %r12,%r12,%r11 */
146#define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
147#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
148 /* ld %r11,xxx@l(%r12) */
149#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
150 /* ld %r2,8(%r12) */
151 /* mtctr %r11 */
152 /* ld %r11,16(%r12) */
153 /* bctr */
154
155/* Pad with this. */
156#define NOP 0x60000000
157
158/* Some other nops. */
159#define CROR_151515 0x4def7b82
160#define CROR_313131 0x4ffffb82
161
162/* .glink entries for the first 32k functions are two instructions. */
163#define LI_R0_0 0x38000000 /* li %r0,0 */
164#define B_DOT 0x48000000 /* b . */
165
166/* After that, we need two instructions to load the index, followed by
167 a branch. */
168#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
169#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
170
171/* Instructions to save and restore floating point regs. */
172#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
173#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
174#define BLR 0x4e800020 /* blr */
175
176/* Since .opd is an array of descriptors and each entry will end up
177 with identical R_PPC64_RELATIVE relocs, there is really no need to
178 propagate .opd relocs; The dynamic linker should be taught to
179 relocate .opd without reloc entries. */
180#ifndef NO_OPD_RELOCS
181#define NO_OPD_RELOCS 0
182#endif
183\f
184#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
185
186/* Relocation HOWTO's. */
187static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
188
189static reloc_howto_type ppc64_elf_howto_raw[] = {
190 /* This reloc does nothing. */
191 HOWTO (R_PPC64_NONE, /* type */
192 0, /* rightshift */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 32, /* bitsize */
195 FALSE, /* pc_relative */
196 0, /* bitpos */
197 complain_overflow_dont, /* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
199 "R_PPC64_NONE", /* name */
200 FALSE, /* partial_inplace */
201 0, /* src_mask */
202 0, /* dst_mask */
203 FALSE), /* pcrel_offset */
204
205 /* A standard 32 bit relocation. */
206 HOWTO (R_PPC64_ADDR32, /* type */
207 0, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 32, /* bitsize */
210 FALSE, /* pc_relative */
211 0, /* bitpos */
212 complain_overflow_bitfield, /* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_PPC64_ADDR32", /* name */
215 FALSE, /* partial_inplace */
216 0, /* src_mask */
217 0xffffffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
219
220 /* An absolute 26 bit branch; the lower two bits must be zero.
221 FIXME: we don't check that, we just clear them. */
222 HOWTO (R_PPC64_ADDR24, /* type */
223 0, /* rightshift */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
225 26, /* bitsize */
226 FALSE, /* pc_relative */
227 0, /* bitpos */
228 complain_overflow_bitfield, /* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
230 "R_PPC64_ADDR24", /* name */
231 FALSE, /* partial_inplace */
232 0, /* src_mask */
233 0x03fffffc, /* dst_mask */
234 FALSE), /* pcrel_offset */
235
236 /* A standard 16 bit relocation. */
237 HOWTO (R_PPC64_ADDR16, /* type */
238 0, /* rightshift */
239 1, /* size (0 = byte, 1 = short, 2 = long) */
240 16, /* bitsize */
241 FALSE, /* pc_relative */
242 0, /* bitpos */
243 complain_overflow_bitfield, /* complain_on_overflow */
244 bfd_elf_generic_reloc, /* special_function */
245 "R_PPC64_ADDR16", /* name */
246 FALSE, /* partial_inplace */
247 0, /* src_mask */
248 0xffff, /* dst_mask */
249 FALSE), /* pcrel_offset */
250
251 /* A 16 bit relocation without overflow. */
252 HOWTO (R_PPC64_ADDR16_LO, /* type */
253 0, /* rightshift */
254 1, /* size (0 = byte, 1 = short, 2 = long) */
255 16, /* bitsize */
256 FALSE, /* pc_relative */
257 0, /* bitpos */
258 complain_overflow_dont,/* complain_on_overflow */
259 bfd_elf_generic_reloc, /* special_function */
260 "R_PPC64_ADDR16_LO", /* name */
261 FALSE, /* partial_inplace */
262 0, /* src_mask */
263 0xffff, /* dst_mask */
264 FALSE), /* pcrel_offset */
265
266 /* Bits 16-31 of an address. */
267 HOWTO (R_PPC64_ADDR16_HI, /* type */
268 16, /* rightshift */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
271 FALSE, /* pc_relative */
272 0, /* bitpos */
273 complain_overflow_dont, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC64_ADDR16_HI", /* name */
276 FALSE, /* partial_inplace */
277 0, /* src_mask */
278 0xffff, /* dst_mask */
279 FALSE), /* pcrel_offset */
280
281 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
282 bits, treated as a signed number, is negative. */
283 HOWTO (R_PPC64_ADDR16_HA, /* type */
284 16, /* rightshift */
285 1, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_dont, /* complain_on_overflow */
290 ppc64_elf_ha_reloc, /* special_function */
291 "R_PPC64_ADDR16_HA", /* name */
292 FALSE, /* partial_inplace */
293 0, /* src_mask */
294 0xffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* An absolute 16 bit branch; the lower two bits must be zero.
298 FIXME: we don't check that, we just clear them. */
299 HOWTO (R_PPC64_ADDR14, /* type */
300 0, /* rightshift */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
302 16, /* bitsize */
303 FALSE, /* pc_relative */
304 0, /* bitpos */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC64_ADDR14", /* name */
308 FALSE, /* partial_inplace */
309 0, /* src_mask */
310 0x0000fffc, /* dst_mask */
311 FALSE), /* pcrel_offset */
312
313 /* An absolute 16 bit branch, for which bit 10 should be set to
314 indicate that the branch is expected to be taken. The lower two
315 bits must be zero. */
316 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
317 0, /* rightshift */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
319 16, /* bitsize */
320 FALSE, /* pc_relative */
321 0, /* bitpos */
322 complain_overflow_bitfield, /* complain_on_overflow */
323 ppc64_elf_brtaken_reloc, /* special_function */
324 "R_PPC64_ADDR14_BRTAKEN",/* name */
325 FALSE, /* partial_inplace */
326 0, /* src_mask */
327 0x0000fffc, /* dst_mask */
328 FALSE), /* pcrel_offset */
329
330 /* An absolute 16 bit branch, for which bit 10 should be set to
331 indicate that the branch is not expected to be taken. The lower
332 two bits must be zero. */
333 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 16, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_bitfield, /* complain_on_overflow */
340 ppc64_elf_brtaken_reloc, /* special_function */
341 "R_PPC64_ADDR14_BRNTAKEN",/* name */
342 FALSE, /* partial_inplace */
343 0, /* src_mask */
344 0x0000fffc, /* dst_mask */
345 FALSE), /* pcrel_offset */
346
347 /* A relative 26 bit branch; the lower two bits must be zero. */
348 HOWTO (R_PPC64_REL24, /* type */
349 0, /* rightshift */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
351 26, /* bitsize */
352 TRUE, /* pc_relative */
353 0, /* bitpos */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC64_REL24", /* name */
357 FALSE, /* partial_inplace */
358 0, /* src_mask */
359 0x03fffffc, /* dst_mask */
360 TRUE), /* pcrel_offset */
361
362 /* A relative 16 bit branch; the lower two bits must be zero. */
363 HOWTO (R_PPC64_REL14, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 16, /* bitsize */
367 TRUE, /* pc_relative */
368 0, /* bitpos */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC64_REL14", /* name */
372 FALSE, /* partial_inplace */
373 0, /* src_mask */
374 0x0000fffc, /* dst_mask */
375 TRUE), /* pcrel_offset */
376
377 /* A relative 16 bit branch. Bit 10 should be set to indicate that
378 the branch is expected to be taken. The lower two bits must be
379 zero. */
380 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
381 0, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
384 TRUE, /* pc_relative */
385 0, /* bitpos */
386 complain_overflow_signed, /* complain_on_overflow */
387 ppc64_elf_brtaken_reloc, /* special_function */
388 "R_PPC64_REL14_BRTAKEN", /* name */
389 FALSE, /* partial_inplace */
390 0, /* src_mask */
391 0x0000fffc, /* dst_mask */
392 TRUE), /* pcrel_offset */
393
394 /* A relative 16 bit branch. Bit 10 should be set to indicate that
395 the branch is not expected to be taken. The lower two bits must
396 be zero. */
397 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 16, /* bitsize */
401 TRUE, /* pc_relative */
402 0, /* bitpos */
403 complain_overflow_signed, /* complain_on_overflow */
404 ppc64_elf_brtaken_reloc, /* special_function */
405 "R_PPC64_REL14_BRNTAKEN",/* name */
406 FALSE, /* partial_inplace */
407 0, /* src_mask */
408 0x0000fffc, /* dst_mask */
409 TRUE), /* pcrel_offset */
410
411 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
412 symbol. */
413 HOWTO (R_PPC64_GOT16, /* type */
414 0, /* rightshift */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
416 16, /* bitsize */
417 FALSE, /* pc_relative */
418 0, /* bitpos */
419 complain_overflow_signed, /* complain_on_overflow */
420 ppc64_elf_unhandled_reloc, /* special_function */
421 "R_PPC64_GOT16", /* name */
422 FALSE, /* partial_inplace */
423 0, /* src_mask */
424 0xffff, /* dst_mask */
425 FALSE), /* pcrel_offset */
426
427 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
428 the symbol. */
429 HOWTO (R_PPC64_GOT16_LO, /* type */
430 0, /* rightshift */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
432 16, /* bitsize */
433 FALSE, /* pc_relative */
434 0, /* bitpos */
435 complain_overflow_dont, /* complain_on_overflow */
436 ppc64_elf_unhandled_reloc, /* special_function */
437 "R_PPC64_GOT16_LO", /* name */
438 FALSE, /* partial_inplace */
439 0, /* src_mask */
440 0xffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
442
443 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
444 the symbol. */
445 HOWTO (R_PPC64_GOT16_HI, /* type */
446 16, /* rightshift */
447 1, /* size (0 = byte, 1 = short, 2 = long) */
448 16, /* bitsize */
449 FALSE, /* pc_relative */
450 0, /* bitpos */
451 complain_overflow_dont,/* complain_on_overflow */
452 ppc64_elf_unhandled_reloc, /* special_function */
453 "R_PPC64_GOT16_HI", /* name */
454 FALSE, /* partial_inplace */
455 0, /* src_mask */
456 0xffff, /* dst_mask */
457 FALSE), /* pcrel_offset */
458
459 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
460 the symbol. */
461 HOWTO (R_PPC64_GOT16_HA, /* type */
462 16, /* rightshift */
463 1, /* size (0 = byte, 1 = short, 2 = long) */
464 16, /* bitsize */
465 FALSE, /* pc_relative */
466 0, /* bitpos */
467 complain_overflow_dont,/* complain_on_overflow */
468 ppc64_elf_unhandled_reloc, /* special_function */
469 "R_PPC64_GOT16_HA", /* name */
470 FALSE, /* partial_inplace */
471 0, /* src_mask */
472 0xffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
474
475 /* This is used only by the dynamic linker. The symbol should exist
476 both in the object being run and in some shared library. The
477 dynamic linker copies the data addressed by the symbol from the
478 shared library into the object, because the object being
479 run has to have the data at some particular address. */
480 HOWTO (R_PPC64_COPY, /* type */
481 0, /* rightshift */
482 0, /* this one is variable size */
483 0, /* bitsize */
484 FALSE, /* pc_relative */
485 0, /* bitpos */
486 complain_overflow_dont, /* complain_on_overflow */
487 ppc64_elf_unhandled_reloc, /* special_function */
488 "R_PPC64_COPY", /* name */
489 FALSE, /* partial_inplace */
490 0, /* src_mask */
491 0, /* dst_mask */
492 FALSE), /* pcrel_offset */
493
494 /* Like R_PPC64_ADDR64, but used when setting global offset table
495 entries. */
496 HOWTO (R_PPC64_GLOB_DAT, /* type */
497 0, /* rightshift */
498 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
499 64, /* bitsize */
500 FALSE, /* pc_relative */
501 0, /* bitpos */
502 complain_overflow_dont, /* complain_on_overflow */
503 ppc64_elf_unhandled_reloc, /* special_function */
504 "R_PPC64_GLOB_DAT", /* name */
505 FALSE, /* partial_inplace */
506 0, /* src_mask */
507 ONES (64), /* dst_mask */
508 FALSE), /* pcrel_offset */
509
510 /* Created by the link editor. Marks a procedure linkage table
511 entry for a symbol. */
512 HOWTO (R_PPC64_JMP_SLOT, /* type */
513 0, /* rightshift */
514 0, /* size (0 = byte, 1 = short, 2 = long) */
515 0, /* bitsize */
516 FALSE, /* pc_relative */
517 0, /* bitpos */
518 complain_overflow_dont, /* complain_on_overflow */
519 ppc64_elf_unhandled_reloc, /* special_function */
520 "R_PPC64_JMP_SLOT", /* name */
521 FALSE, /* partial_inplace */
522 0, /* src_mask */
523 0, /* dst_mask */
524 FALSE), /* pcrel_offset */
525
526 /* Used only by the dynamic linker. When the object is run, this
527 doubleword64 is set to the load address of the object, plus the
528 addend. */
529 HOWTO (R_PPC64_RELATIVE, /* type */
530 0, /* rightshift */
531 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
532 64, /* bitsize */
533 FALSE, /* pc_relative */
534 0, /* bitpos */
535 complain_overflow_dont, /* complain_on_overflow */
536 bfd_elf_generic_reloc, /* special_function */
537 "R_PPC64_RELATIVE", /* name */
538 FALSE, /* partial_inplace */
539 0, /* src_mask */
540 ONES (64), /* dst_mask */
541 FALSE), /* pcrel_offset */
542
543 /* Like R_PPC64_ADDR32, but may be unaligned. */
544 HOWTO (R_PPC64_UADDR32, /* type */
545 0, /* rightshift */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
547 32, /* bitsize */
548 FALSE, /* pc_relative */
549 0, /* bitpos */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC64_UADDR32", /* name */
553 FALSE, /* partial_inplace */
554 0, /* src_mask */
555 0xffffffff, /* dst_mask */
556 FALSE), /* pcrel_offset */
557
558 /* Like R_PPC64_ADDR16, but may be unaligned. */
559 HOWTO (R_PPC64_UADDR16, /* type */
560 0, /* rightshift */
561 1, /* size (0 = byte, 1 = short, 2 = long) */
562 16, /* bitsize */
563 FALSE, /* pc_relative */
564 0, /* bitpos */
565 complain_overflow_bitfield, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC64_UADDR16", /* name */
568 FALSE, /* partial_inplace */
569 0, /* src_mask */
570 0xffff, /* dst_mask */
571 FALSE), /* pcrel_offset */
572
573 /* 32-bit PC relative. */
574 HOWTO (R_PPC64_REL32, /* type */
575 0, /* rightshift */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
577 32, /* bitsize */
578 TRUE, /* pc_relative */
579 0, /* bitpos */
580 /* FIXME: Verify. Was complain_overflow_bitfield. */
581 complain_overflow_signed, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_PPC64_REL32", /* name */
584 FALSE, /* partial_inplace */
585 0, /* src_mask */
586 0xffffffff, /* dst_mask */
587 TRUE), /* pcrel_offset */
588
589 /* 32-bit relocation to the symbol's procedure linkage table. */
590 HOWTO (R_PPC64_PLT32, /* type */
591 0, /* rightshift */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
593 32, /* bitsize */
594 FALSE, /* pc_relative */
595 0, /* bitpos */
596 complain_overflow_bitfield, /* complain_on_overflow */
597 ppc64_elf_unhandled_reloc, /* special_function */
598 "R_PPC64_PLT32", /* name */
599 FALSE, /* partial_inplace */
600 0, /* src_mask */
601 0xffffffff, /* dst_mask */
602 FALSE), /* pcrel_offset */
603
604 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
605 FIXME: R_PPC64_PLTREL32 not supported. */
606 HOWTO (R_PPC64_PLTREL32, /* type */
607 0, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 32, /* bitsize */
610 TRUE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_signed, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC64_PLTREL32", /* name */
615 FALSE, /* partial_inplace */
616 0, /* src_mask */
617 0xffffffff, /* dst_mask */
618 TRUE), /* pcrel_offset */
619
620 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
621 the symbol. */
622 HOWTO (R_PPC64_PLT16_LO, /* type */
623 0, /* rightshift */
624 1, /* size (0 = byte, 1 = short, 2 = long) */
625 16, /* bitsize */
626 FALSE, /* pc_relative */
627 0, /* bitpos */
628 complain_overflow_dont, /* complain_on_overflow */
629 ppc64_elf_unhandled_reloc, /* special_function */
630 "R_PPC64_PLT16_LO", /* name */
631 FALSE, /* partial_inplace */
632 0, /* src_mask */
633 0xffff, /* dst_mask */
634 FALSE), /* pcrel_offset */
635
636 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
637 the symbol. */
638 HOWTO (R_PPC64_PLT16_HI, /* type */
639 16, /* rightshift */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
641 16, /* bitsize */
642 FALSE, /* pc_relative */
643 0, /* bitpos */
644 complain_overflow_dont, /* complain_on_overflow */
645 ppc64_elf_unhandled_reloc, /* special_function */
646 "R_PPC64_PLT16_HI", /* name */
647 FALSE, /* partial_inplace */
648 0, /* src_mask */
649 0xffff, /* dst_mask */
650 FALSE), /* pcrel_offset */
651
652 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
653 the symbol. */
654 HOWTO (R_PPC64_PLT16_HA, /* type */
655 16, /* rightshift */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
657 16, /* bitsize */
658 FALSE, /* pc_relative */
659 0, /* bitpos */
660 complain_overflow_dont, /* complain_on_overflow */
661 ppc64_elf_unhandled_reloc, /* special_function */
662 "R_PPC64_PLT16_HA", /* name */
663 FALSE, /* partial_inplace */
664 0, /* src_mask */
665 0xffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
667
668 /* 16-bit section relative relocation. */
669 HOWTO (R_PPC64_SECTOFF, /* type */
670 0, /* rightshift */
671 1, /* size (0 = byte, 1 = short, 2 = long) */
672 16, /* bitsize */
673 FALSE, /* pc_relative */
674 0, /* bitpos */
675 complain_overflow_bitfield, /* complain_on_overflow */
676 ppc64_elf_sectoff_reloc, /* special_function */
677 "R_PPC64_SECTOFF", /* name */
678 FALSE, /* partial_inplace */
679 0, /* src_mask */
680 0xffff, /* dst_mask */
681 FALSE), /* pcrel_offset */
682
683 /* Like R_PPC64_SECTOFF, but no overflow warning. */
684 HOWTO (R_PPC64_SECTOFF_LO, /* type */
685 0, /* rightshift */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
687 16, /* bitsize */
688 FALSE, /* pc_relative */
689 0, /* bitpos */
690 complain_overflow_dont, /* complain_on_overflow */
691 ppc64_elf_sectoff_reloc, /* special_function */
692 "R_PPC64_SECTOFF_LO", /* name */
693 FALSE, /* partial_inplace */
694 0, /* src_mask */
695 0xffff, /* dst_mask */
696 FALSE), /* pcrel_offset */
697
698 /* 16-bit upper half section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF_HI, /* type */
700 16, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_dont, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc, /* special_function */
707 "R_PPC64_SECTOFF_HI", /* name */
708 FALSE, /* partial_inplace */
709 0, /* src_mask */
710 0xffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 /* 16-bit upper half adjusted section relative relocation. */
714 HOWTO (R_PPC64_SECTOFF_HA, /* type */
715 16, /* rightshift */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 FALSE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
721 ppc64_elf_sectoff_ha_reloc, /* special_function */
722 "R_PPC64_SECTOFF_HA", /* name */
723 FALSE, /* partial_inplace */
724 0, /* src_mask */
725 0xffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
727
728 /* Like R_PPC64_REL24 without touching the two least significant bits. */
729 HOWTO (R_PPC64_REL30, /* type */
730 2, /* rightshift */
731 2, /* size (0 = byte, 1 = short, 2 = long) */
732 30, /* bitsize */
733 TRUE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_dont, /* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_PPC64_REL30", /* name */
738 FALSE, /* partial_inplace */
739 0, /* src_mask */
740 0xfffffffc, /* dst_mask */
741 TRUE), /* pcrel_offset */
742
743 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
744
745 /* A standard 64-bit relocation. */
746 HOWTO (R_PPC64_ADDR64, /* type */
747 0, /* rightshift */
748 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
749 64, /* bitsize */
750 FALSE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_dont, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_PPC64_ADDR64", /* name */
755 FALSE, /* partial_inplace */
756 0, /* src_mask */
757 ONES (64), /* dst_mask */
758 FALSE), /* pcrel_offset */
759
760 /* The bits 32-47 of an address. */
761 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
762 32, /* rightshift */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
765 FALSE, /* pc_relative */
766 0, /* bitpos */
767 complain_overflow_dont, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_PPC64_ADDR16_HIGHER", /* name */
770 FALSE, /* partial_inplace */
771 0, /* src_mask */
772 0xffff, /* dst_mask */
773 FALSE), /* pcrel_offset */
774
775 /* The bits 32-47 of an address, plus 1 if the contents of the low
776 16 bits, treated as a signed number, is negative. */
777 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
778 32, /* rightshift */
779 1, /* size (0 = byte, 1 = short, 2 = long) */
780 16, /* bitsize */
781 FALSE, /* pc_relative */
782 0, /* bitpos */
783 complain_overflow_dont, /* complain_on_overflow */
784 ppc64_elf_ha_reloc, /* special_function */
785 "R_PPC64_ADDR16_HIGHERA", /* name */
786 FALSE, /* partial_inplace */
787 0, /* src_mask */
788 0xffff, /* dst_mask */
789 FALSE), /* pcrel_offset */
790
791 /* The bits 48-63 of an address. */
792 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
793 48, /* rightshift */
794 1, /* size (0 = byte, 1 = short, 2 = long) */
795 16, /* bitsize */
796 FALSE, /* pc_relative */
797 0, /* bitpos */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
800 "R_PPC64_ADDR16_HIGHEST", /* name */
801 FALSE, /* partial_inplace */
802 0, /* src_mask */
803 0xffff, /* dst_mask */
804 FALSE), /* pcrel_offset */
805
806 /* The bits 48-63 of an address, plus 1 if the contents of the low
807 16 bits, treated as a signed number, is negative. */
808 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
809 48, /* rightshift */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
811 16, /* bitsize */
812 FALSE, /* pc_relative */
813 0, /* bitpos */
814 complain_overflow_dont, /* complain_on_overflow */
815 ppc64_elf_ha_reloc, /* special_function */
816 "R_PPC64_ADDR16_HIGHESTA", /* name */
817 FALSE, /* partial_inplace */
818 0, /* src_mask */
819 0xffff, /* dst_mask */
820 FALSE), /* pcrel_offset */
821
822 /* Like ADDR64, but may be unaligned. */
823 HOWTO (R_PPC64_UADDR64, /* type */
824 0, /* rightshift */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
826 64, /* bitsize */
827 FALSE, /* pc_relative */
828 0, /* bitpos */
829 complain_overflow_dont, /* complain_on_overflow */
830 bfd_elf_generic_reloc, /* special_function */
831 "R_PPC64_UADDR64", /* name */
832 FALSE, /* partial_inplace */
833 0, /* src_mask */
834 ONES (64), /* dst_mask */
835 FALSE), /* pcrel_offset */
836
837 /* 64-bit relative relocation. */
838 HOWTO (R_PPC64_REL64, /* type */
839 0, /* rightshift */
840 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
841 64, /* bitsize */
842 TRUE, /* pc_relative */
843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_REL64", /* name */
847 FALSE, /* partial_inplace */
848 0, /* src_mask */
849 ONES (64), /* dst_mask */
850 TRUE), /* pcrel_offset */
851
852 /* 64-bit relocation to the symbol's procedure linkage table. */
853 HOWTO (R_PPC64_PLT64, /* type */
854 0, /* rightshift */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 64, /* bitsize */
857 FALSE, /* pc_relative */
858 0, /* bitpos */
859 complain_overflow_dont, /* complain_on_overflow */
860 ppc64_elf_unhandled_reloc, /* special_function */
861 "R_PPC64_PLT64", /* name */
862 FALSE, /* partial_inplace */
863 0, /* src_mask */
864 ONES (64), /* dst_mask */
865 FALSE), /* pcrel_offset */
866
867 /* 64-bit PC relative relocation to the symbol's procedure linkage
868 table. */
869 /* FIXME: R_PPC64_PLTREL64 not supported. */
870 HOWTO (R_PPC64_PLTREL64, /* type */
871 0, /* rightshift */
872 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
873 64, /* bitsize */
874 TRUE, /* pc_relative */
875 0, /* bitpos */
876 complain_overflow_dont, /* complain_on_overflow */
877 ppc64_elf_unhandled_reloc, /* special_function */
878 "R_PPC64_PLTREL64", /* name */
879 FALSE, /* partial_inplace */
880 0, /* src_mask */
881 ONES (64), /* dst_mask */
882 TRUE), /* pcrel_offset */
883
884 /* 16 bit TOC-relative relocation. */
885
886 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
887 HOWTO (R_PPC64_TOC16, /* type */
888 0, /* rightshift */
889 1, /* size (0 = byte, 1 = short, 2 = long) */
890 16, /* bitsize */
891 FALSE, /* pc_relative */
892 0, /* bitpos */
893 complain_overflow_signed, /* complain_on_overflow */
894 ppc64_elf_toc_reloc, /* special_function */
895 "R_PPC64_TOC16", /* name */
896 FALSE, /* partial_inplace */
897 0, /* src_mask */
898 0xffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
900
901 /* 16 bit TOC-relative relocation without overflow. */
902
903 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
904 HOWTO (R_PPC64_TOC16_LO, /* type */
905 0, /* rightshift */
906 1, /* size (0 = byte, 1 = short, 2 = long) */
907 16, /* bitsize */
908 FALSE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_dont, /* complain_on_overflow */
911 ppc64_elf_toc_reloc, /* special_function */
912 "R_PPC64_TOC16_LO", /* name */
913 FALSE, /* partial_inplace */
914 0, /* src_mask */
915 0xffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
917
918 /* 16 bit TOC-relative relocation, high 16 bits. */
919
920 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
921 HOWTO (R_PPC64_TOC16_HI, /* type */
922 16, /* rightshift */
923 1, /* size (0 = byte, 1 = short, 2 = long) */
924 16, /* bitsize */
925 FALSE, /* pc_relative */
926 0, /* bitpos */
927 complain_overflow_dont, /* complain_on_overflow */
928 ppc64_elf_toc_reloc, /* special_function */
929 "R_PPC64_TOC16_HI", /* name */
930 FALSE, /* partial_inplace */
931 0, /* src_mask */
932 0xffff, /* dst_mask */
933 FALSE), /* pcrel_offset */
934
935 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
936 contents of the low 16 bits, treated as a signed number, is
937 negative. */
938
939 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
940 HOWTO (R_PPC64_TOC16_HA, /* type */
941 16, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
944 FALSE, /* pc_relative */
945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc64_elf_toc_ha_reloc, /* special_function */
948 "R_PPC64_TOC16_HA", /* name */
949 FALSE, /* partial_inplace */
950 0, /* src_mask */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
953
954 /* 64-bit relocation; insert value of TOC base (.TOC.). */
955
956 /* R_PPC64_TOC 51 doubleword64 .TOC. */
957 HOWTO (R_PPC64_TOC, /* type */
958 0, /* rightshift */
959 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
960 64, /* bitsize */
961 FALSE, /* pc_relative */
962 0, /* bitpos */
963 complain_overflow_bitfield, /* complain_on_overflow */
964 ppc64_elf_toc64_reloc, /* special_function */
965 "R_PPC64_TOC", /* name */
966 FALSE, /* partial_inplace */
967 0, /* src_mask */
968 ONES (64), /* dst_mask */
969 FALSE), /* pcrel_offset */
970
971 /* Like R_PPC64_GOT16, but also informs the link editor that the
972 value to relocate may (!) refer to a PLT entry which the link
973 editor (a) may replace with the symbol value. If the link editor
974 is unable to fully resolve the symbol, it may (b) create a PLT
975 entry and store the address to the new PLT entry in the GOT.
976 This permits lazy resolution of function symbols at run time.
977 The link editor may also skip all of this and just (c) emit a
978 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
979 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
980 HOWTO (R_PPC64_PLTGOT16, /* type */
981 0, /* rightshift */
982 1, /* size (0 = byte, 1 = short, 2 = long) */
983 16, /* bitsize */
984 FALSE, /* pc_relative */
985 0, /* bitpos */
986 complain_overflow_signed, /* complain_on_overflow */
987 ppc64_elf_unhandled_reloc, /* special_function */
988 "R_PPC64_PLTGOT16", /* name */
989 FALSE, /* partial_inplace */
990 0, /* src_mask */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
993
994 /* Like R_PPC64_PLTGOT16, but without overflow. */
995 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
996 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
997 0, /* rightshift */
998 1, /* size (0 = byte, 1 = short, 2 = long) */
999 16, /* bitsize */
1000 FALSE, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 ppc64_elf_unhandled_reloc, /* special_function */
1004 "R_PPC64_PLTGOT16_LO", /* name */
1005 FALSE, /* partial_inplace */
1006 0, /* src_mask */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1009
1010 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1011 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1012 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1013 16, /* rightshift */
1014 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 16, /* bitsize */
1016 FALSE, /* pc_relative */
1017 0, /* bitpos */
1018 complain_overflow_dont, /* complain_on_overflow */
1019 ppc64_elf_unhandled_reloc, /* special_function */
1020 "R_PPC64_PLTGOT16_HI", /* name */
1021 FALSE, /* partial_inplace */
1022 0, /* src_mask */
1023 0xffff, /* dst_mask */
1024 FALSE), /* pcrel_offset */
1025
1026 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1027 1 if the contents of the low 16 bits, treated as a signed number,
1028 is negative. */
1029 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1030 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1031 16, /* rightshift */
1032 1, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 ppc64_elf_unhandled_reloc, /* special_function */
1038 "R_PPC64_PLTGOT16_HA", /* name */
1039 FALSE, /* partial_inplace */
1040 0, /* src_mask */
1041 0xffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1043
1044 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1045 HOWTO (R_PPC64_ADDR16_DS, /* type */
1046 0, /* rightshift */
1047 1, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_bitfield, /* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_PPC64_ADDR16_DS", /* name */
1054 FALSE, /* partial_inplace */
1055 0, /* src_mask */
1056 0xfffc, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1060 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1061 0, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 0, /* bitpos */
1066 complain_overflow_dont,/* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 "R_PPC64_ADDR16_LO_DS",/* name */
1069 FALSE, /* partial_inplace */
1070 0, /* src_mask */
1071 0xfffc, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073
1074 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_GOT16_DS, /* type */
1076 0, /* rightshift */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_signed, /* complain_on_overflow */
1082 ppc64_elf_unhandled_reloc, /* special_function */
1083 "R_PPC64_GOT16_DS", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0xfffc, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1088
1089 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1091 0, /* rightshift */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 16, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 ppc64_elf_unhandled_reloc, /* special_function */
1098 "R_PPC64_GOT16_LO_DS", /* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 0xfffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1103
1104 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1106 0, /* rightshift */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 16, /* bitsize */
1109 FALSE, /* pc_relative */
1110 0, /* bitpos */
1111 complain_overflow_dont, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc, /* special_function */
1113 "R_PPC64_PLT16_LO_DS", /* name */
1114 FALSE, /* partial_inplace */
1115 0, /* src_mask */
1116 0xfffc, /* dst_mask */
1117 FALSE), /* pcrel_offset */
1118
1119 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1121 0, /* rightshift */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 16, /* bitsize */
1124 FALSE, /* pc_relative */
1125 0, /* bitpos */
1126 complain_overflow_bitfield, /* complain_on_overflow */
1127 ppc64_elf_sectoff_reloc, /* special_function */
1128 "R_PPC64_SECTOFF_DS", /* name */
1129 FALSE, /* partial_inplace */
1130 0, /* src_mask */
1131 0xfffc, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1133
1134 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1136 0, /* rightshift */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 16, /* bitsize */
1139 FALSE, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 ppc64_elf_sectoff_reloc, /* special_function */
1143 "R_PPC64_SECTOFF_LO_DS",/* name */
1144 FALSE, /* partial_inplace */
1145 0, /* src_mask */
1146 0xfffc, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1148
1149 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_TOC16_DS, /* type */
1151 0, /* rightshift */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 FALSE, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_signed, /* complain_on_overflow */
1157 ppc64_elf_toc_reloc, /* special_function */
1158 "R_PPC64_TOC16_DS", /* name */
1159 FALSE, /* partial_inplace */
1160 0, /* src_mask */
1161 0xfffc, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1163
1164 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1166 0, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 ppc64_elf_toc_reloc, /* special_function */
1173 "R_PPC64_TOC16_LO_DS", /* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0xfffc, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1180 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1181 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1182 0, /* rightshift */
1183 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 16, /* bitsize */
1185 FALSE, /* pc_relative */
1186 0, /* bitpos */
1187 complain_overflow_signed, /* complain_on_overflow */
1188 ppc64_elf_unhandled_reloc, /* special_function */
1189 "R_PPC64_PLTGOT16_DS", /* name */
1190 FALSE, /* partial_inplace */
1191 0, /* src_mask */
1192 0xfffc, /* dst_mask */
1193 FALSE), /* pcrel_offset */
1194
1195 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1196 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1197 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1198 0, /* rightshift */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 16, /* bitsize */
1201 FALSE, /* pc_relative */
1202 0, /* bitpos */
1203 complain_overflow_dont, /* complain_on_overflow */
1204 ppc64_elf_unhandled_reloc, /* special_function */
1205 "R_PPC64_PLTGOT16_LO_DS",/* name */
1206 FALSE, /* partial_inplace */
1207 0, /* src_mask */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1210
1211 /* Marker reloc for TLS. */
1212 HOWTO (R_PPC64_TLS,
1213 0, /* rightshift */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 32, /* bitsize */
1216 FALSE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_PPC64_TLS", /* name */
1221 FALSE, /* partial_inplace */
1222 0, /* src_mask */
1223 0, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1225
1226 /* Computes the load module index of the load module that contains the
1227 definition of its TLS sym. */
1228 HOWTO (R_PPC64_DTPMOD64,
1229 0, /* rightshift */
1230 4, /* size (0 = byte, 1 = short, 2 = long) */
1231 64, /* bitsize */
1232 FALSE, /* pc_relative */
1233 0, /* bitpos */
1234 complain_overflow_dont, /* complain_on_overflow */
1235 ppc64_elf_unhandled_reloc, /* special_function */
1236 "R_PPC64_DTPMOD64", /* name */
1237 FALSE, /* partial_inplace */
1238 0, /* src_mask */
1239 ONES (64), /* dst_mask */
1240 FALSE), /* pcrel_offset */
1241
1242 /* Computes a dtv-relative displacement, the difference between the value
1243 of sym+add and the base address of the thread-local storage block that
1244 contains the definition of sym, minus 0x8000. */
1245 HOWTO (R_PPC64_DTPREL64,
1246 0, /* rightshift */
1247 4, /* size (0 = byte, 1 = short, 2 = long) */
1248 64, /* bitsize */
1249 FALSE, /* pc_relative */
1250 0, /* bitpos */
1251 complain_overflow_dont, /* complain_on_overflow */
1252 ppc64_elf_unhandled_reloc, /* special_function */
1253 "R_PPC64_DTPREL64", /* name */
1254 FALSE, /* partial_inplace */
1255 0, /* src_mask */
1256 ONES (64), /* dst_mask */
1257 FALSE), /* pcrel_offset */
1258
1259 /* A 16 bit dtprel reloc. */
1260 HOWTO (R_PPC64_DTPREL16,
1261 0, /* rightshift */
1262 1, /* size (0 = byte, 1 = short, 2 = long) */
1263 16, /* bitsize */
1264 FALSE, /* pc_relative */
1265 0, /* bitpos */
1266 complain_overflow_signed, /* complain_on_overflow */
1267 ppc64_elf_unhandled_reloc, /* special_function */
1268 "R_PPC64_DTPREL16", /* name */
1269 FALSE, /* partial_inplace */
1270 0, /* src_mask */
1271 0xffff, /* dst_mask */
1272 FALSE), /* pcrel_offset */
1273
1274 /* Like DTPREL16, but no overflow. */
1275 HOWTO (R_PPC64_DTPREL16_LO,
1276 0, /* rightshift */
1277 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 16, /* bitsize */
1279 FALSE, /* pc_relative */
1280 0, /* bitpos */
1281 complain_overflow_dont, /* complain_on_overflow */
1282 ppc64_elf_unhandled_reloc, /* special_function */
1283 "R_PPC64_DTPREL16_LO", /* name */
1284 FALSE, /* partial_inplace */
1285 0, /* src_mask */
1286 0xffff, /* dst_mask */
1287 FALSE), /* pcrel_offset */
1288
1289 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1290 HOWTO (R_PPC64_DTPREL16_HI,
1291 16, /* rightshift */
1292 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 16, /* bitsize */
1294 FALSE, /* pc_relative */
1295 0, /* bitpos */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 ppc64_elf_unhandled_reloc, /* special_function */
1298 "R_PPC64_DTPREL16_HI", /* name */
1299 FALSE, /* partial_inplace */
1300 0, /* src_mask */
1301 0xffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1303
1304 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1305 HOWTO (R_PPC64_DTPREL16_HA,
1306 16, /* rightshift */
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1308 16, /* bitsize */
1309 FALSE, /* pc_relative */
1310 0, /* bitpos */
1311 complain_overflow_dont, /* complain_on_overflow */
1312 ppc64_elf_unhandled_reloc, /* special_function */
1313 "R_PPC64_DTPREL16_HA", /* name */
1314 FALSE, /* partial_inplace */
1315 0, /* src_mask */
1316 0xffff, /* dst_mask */
1317 FALSE), /* pcrel_offset */
1318
1319 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1320 HOWTO (R_PPC64_DTPREL16_HIGHER,
1321 32, /* rightshift */
1322 1, /* size (0 = byte, 1 = short, 2 = long) */
1323 16, /* bitsize */
1324 FALSE, /* pc_relative */
1325 0, /* bitpos */
1326 complain_overflow_dont, /* complain_on_overflow */
1327 ppc64_elf_unhandled_reloc, /* special_function */
1328 "R_PPC64_DTPREL16_HIGHER", /* name */
1329 FALSE, /* partial_inplace */
1330 0, /* src_mask */
1331 0xffff, /* dst_mask */
1332 FALSE), /* pcrel_offset */
1333
1334 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1335 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1336 32, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 16, /* bitsize */
1339 FALSE, /* pc_relative */
1340 0, /* bitpos */
1341 complain_overflow_dont, /* complain_on_overflow */
1342 ppc64_elf_unhandled_reloc, /* special_function */
1343 "R_PPC64_DTPREL16_HIGHERA", /* name */
1344 FALSE, /* partial_inplace */
1345 0, /* src_mask */
1346 0xffff, /* dst_mask */
1347 FALSE), /* pcrel_offset */
1348
1349 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1350 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1351 48, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1353 16, /* bitsize */
1354 FALSE, /* pc_relative */
1355 0, /* bitpos */
1356 complain_overflow_dont, /* complain_on_overflow */
1357 ppc64_elf_unhandled_reloc, /* special_function */
1358 "R_PPC64_DTPREL16_HIGHEST", /* name */
1359 FALSE, /* partial_inplace */
1360 0, /* src_mask */
1361 0xffff, /* dst_mask */
1362 FALSE), /* pcrel_offset */
1363
1364 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1365 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1366 48, /* rightshift */
1367 1, /* size (0 = byte, 1 = short, 2 = long) */
1368 16, /* bitsize */
1369 FALSE, /* pc_relative */
1370 0, /* bitpos */
1371 complain_overflow_dont, /* complain_on_overflow */
1372 ppc64_elf_unhandled_reloc, /* special_function */
1373 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1374 FALSE, /* partial_inplace */
1375 0, /* src_mask */
1376 0xffff, /* dst_mask */
1377 FALSE), /* pcrel_offset */
1378
1379 /* Like DTPREL16, but for insns with a DS field. */
1380 HOWTO (R_PPC64_DTPREL16_DS,
1381 0, /* rightshift */
1382 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 16, /* bitsize */
1384 FALSE, /* pc_relative */
1385 0, /* bitpos */
1386 complain_overflow_signed, /* complain_on_overflow */
1387 ppc64_elf_unhandled_reloc, /* special_function */
1388 "R_PPC64_DTPREL16_DS", /* name */
1389 FALSE, /* partial_inplace */
1390 0, /* src_mask */
1391 0xfffc, /* dst_mask */
1392 FALSE), /* pcrel_offset */
1393
1394 /* Like DTPREL16_DS, but no overflow. */
1395 HOWTO (R_PPC64_DTPREL16_LO_DS,
1396 0, /* rightshift */
1397 1, /* size (0 = byte, 1 = short, 2 = long) */
1398 16, /* bitsize */
1399 FALSE, /* pc_relative */
1400 0, /* bitpos */
1401 complain_overflow_dont, /* complain_on_overflow */
1402 ppc64_elf_unhandled_reloc, /* special_function */
1403 "R_PPC64_DTPREL16_LO_DS", /* name */
1404 FALSE, /* partial_inplace */
1405 0, /* src_mask */
1406 0xfffc, /* dst_mask */
1407 FALSE), /* pcrel_offset */
1408
1409 /* Computes a tp-relative displacement, the difference between the value of
1410 sym+add and the value of the thread pointer (r13). */
1411 HOWTO (R_PPC64_TPREL64,
1412 0, /* rightshift */
1413 4, /* size (0 = byte, 1 = short, 2 = long) */
1414 64, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_dont, /* complain_on_overflow */
1418 ppc64_elf_unhandled_reloc, /* special_function */
1419 "R_PPC64_TPREL64", /* name */
1420 FALSE, /* partial_inplace */
1421 0, /* src_mask */
1422 ONES (64), /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 /* A 16 bit tprel reloc. */
1426 HOWTO (R_PPC64_TPREL16,
1427 0, /* rightshift */
1428 1, /* size (0 = byte, 1 = short, 2 = long) */
1429 16, /* bitsize */
1430 FALSE, /* pc_relative */
1431 0, /* bitpos */
1432 complain_overflow_signed, /* complain_on_overflow */
1433 ppc64_elf_unhandled_reloc, /* special_function */
1434 "R_PPC64_TPREL16", /* name */
1435 FALSE, /* partial_inplace */
1436 0, /* src_mask */
1437 0xffff, /* dst_mask */
1438 FALSE), /* pcrel_offset */
1439
1440 /* Like TPREL16, but no overflow. */
1441 HOWTO (R_PPC64_TPREL16_LO,
1442 0, /* rightshift */
1443 1, /* size (0 = byte, 1 = short, 2 = long) */
1444 16, /* bitsize */
1445 FALSE, /* pc_relative */
1446 0, /* bitpos */
1447 complain_overflow_dont, /* complain_on_overflow */
1448 ppc64_elf_unhandled_reloc, /* special_function */
1449 "R_PPC64_TPREL16_LO", /* name */
1450 FALSE, /* partial_inplace */
1451 0, /* src_mask */
1452 0xffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
1454
1455 /* Like TPREL16_LO, but next higher group of 16 bits. */
1456 HOWTO (R_PPC64_TPREL16_HI,
1457 16, /* rightshift */
1458 1, /* size (0 = byte, 1 = short, 2 = long) */
1459 16, /* bitsize */
1460 FALSE, /* pc_relative */
1461 0, /* bitpos */
1462 complain_overflow_dont, /* complain_on_overflow */
1463 ppc64_elf_unhandled_reloc, /* special_function */
1464 "R_PPC64_TPREL16_HI", /* name */
1465 FALSE, /* partial_inplace */
1466 0, /* src_mask */
1467 0xffff, /* dst_mask */
1468 FALSE), /* pcrel_offset */
1469
1470 /* Like TPREL16_HI, but adjust for low 16 bits. */
1471 HOWTO (R_PPC64_TPREL16_HA,
1472 16, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 16, /* bitsize */
1475 FALSE, /* pc_relative */
1476 0, /* bitpos */
1477 complain_overflow_dont, /* complain_on_overflow */
1478 ppc64_elf_unhandled_reloc, /* special_function */
1479 "R_PPC64_TPREL16_HA", /* name */
1480 FALSE, /* partial_inplace */
1481 0, /* src_mask */
1482 0xffff, /* dst_mask */
1483 FALSE), /* pcrel_offset */
1484
1485 /* Like TPREL16_HI, but next higher group of 16 bits. */
1486 HOWTO (R_PPC64_TPREL16_HIGHER,
1487 32, /* rightshift */
1488 1, /* size (0 = byte, 1 = short, 2 = long) */
1489 16, /* bitsize */
1490 FALSE, /* pc_relative */
1491 0, /* bitpos */
1492 complain_overflow_dont, /* complain_on_overflow */
1493 ppc64_elf_unhandled_reloc, /* special_function */
1494 "R_PPC64_TPREL16_HIGHER", /* name */
1495 FALSE, /* partial_inplace */
1496 0, /* src_mask */
1497 0xffff, /* dst_mask */
1498 FALSE), /* pcrel_offset */
1499
1500 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1501 HOWTO (R_PPC64_TPREL16_HIGHERA,
1502 32, /* rightshift */
1503 1, /* size (0 = byte, 1 = short, 2 = long) */
1504 16, /* bitsize */
1505 FALSE, /* pc_relative */
1506 0, /* bitpos */
1507 complain_overflow_dont, /* complain_on_overflow */
1508 ppc64_elf_unhandled_reloc, /* special_function */
1509 "R_PPC64_TPREL16_HIGHERA", /* name */
1510 FALSE, /* partial_inplace */
1511 0, /* src_mask */
1512 0xffff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1514
1515 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1516 HOWTO (R_PPC64_TPREL16_HIGHEST,
1517 48, /* rightshift */
1518 1, /* size (0 = byte, 1 = short, 2 = long) */
1519 16, /* bitsize */
1520 FALSE, /* pc_relative */
1521 0, /* bitpos */
1522 complain_overflow_dont, /* complain_on_overflow */
1523 ppc64_elf_unhandled_reloc, /* special_function */
1524 "R_PPC64_TPREL16_HIGHEST", /* name */
1525 FALSE, /* partial_inplace */
1526 0, /* src_mask */
1527 0xffff, /* dst_mask */
1528 FALSE), /* pcrel_offset */
1529
1530 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1531 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1532 48, /* rightshift */
1533 1, /* size (0 = byte, 1 = short, 2 = long) */
1534 16, /* bitsize */
1535 FALSE, /* pc_relative */
1536 0, /* bitpos */
1537 complain_overflow_dont, /* complain_on_overflow */
1538 ppc64_elf_unhandled_reloc, /* special_function */
1539 "R_PPC64_TPREL16_HIGHESTA", /* name */
1540 FALSE, /* partial_inplace */
1541 0, /* src_mask */
1542 0xffff, /* dst_mask */
1543 FALSE), /* pcrel_offset */
1544
1545 /* Like TPREL16, but for insns with a DS field. */
1546 HOWTO (R_PPC64_TPREL16_DS,
1547 0, /* rightshift */
1548 1, /* size (0 = byte, 1 = short, 2 = long) */
1549 16, /* bitsize */
1550 FALSE, /* pc_relative */
1551 0, /* bitpos */
1552 complain_overflow_signed, /* complain_on_overflow */
1553 ppc64_elf_unhandled_reloc, /* special_function */
1554 "R_PPC64_TPREL16_DS", /* name */
1555 FALSE, /* partial_inplace */
1556 0, /* src_mask */
1557 0xfffc, /* dst_mask */
1558 FALSE), /* pcrel_offset */
1559
1560 /* Like TPREL16_DS, but no overflow. */
1561 HOWTO (R_PPC64_TPREL16_LO_DS,
1562 0, /* rightshift */
1563 1, /* size (0 = byte, 1 = short, 2 = long) */
1564 16, /* bitsize */
1565 FALSE, /* pc_relative */
1566 0, /* bitpos */
1567 complain_overflow_dont, /* complain_on_overflow */
1568 ppc64_elf_unhandled_reloc, /* special_function */
1569 "R_PPC64_TPREL16_LO_DS", /* name */
1570 FALSE, /* partial_inplace */
1571 0, /* src_mask */
1572 0xfffc, /* dst_mask */
1573 FALSE), /* pcrel_offset */
1574
1575 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1576 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1577 to the first entry relative to the TOC base (r2). */
1578 HOWTO (R_PPC64_GOT_TLSGD16,
1579 0, /* rightshift */
1580 1, /* size (0 = byte, 1 = short, 2 = long) */
1581 16, /* bitsize */
1582 FALSE, /* pc_relative */
1583 0, /* bitpos */
1584 complain_overflow_signed, /* complain_on_overflow */
1585 ppc64_elf_unhandled_reloc, /* special_function */
1586 "R_PPC64_GOT_TLSGD16", /* name */
1587 FALSE, /* partial_inplace */
1588 0, /* src_mask */
1589 0xffff, /* dst_mask */
1590 FALSE), /* pcrel_offset */
1591
1592 /* Like GOT_TLSGD16, but no overflow. */
1593 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1594 0, /* rightshift */
1595 1, /* size (0 = byte, 1 = short, 2 = long) */
1596 16, /* bitsize */
1597 FALSE, /* pc_relative */
1598 0, /* bitpos */
1599 complain_overflow_dont, /* complain_on_overflow */
1600 ppc64_elf_unhandled_reloc, /* special_function */
1601 "R_PPC64_GOT_TLSGD16_LO", /* name */
1602 FALSE, /* partial_inplace */
1603 0, /* src_mask */
1604 0xffff, /* dst_mask */
1605 FALSE), /* pcrel_offset */
1606
1607 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1608 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1609 16, /* rightshift */
1610 1, /* size (0 = byte, 1 = short, 2 = long) */
1611 16, /* bitsize */
1612 FALSE, /* pc_relative */
1613 0, /* bitpos */
1614 complain_overflow_dont, /* complain_on_overflow */
1615 ppc64_elf_unhandled_reloc, /* special_function */
1616 "R_PPC64_GOT_TLSGD16_HI", /* name */
1617 FALSE, /* partial_inplace */
1618 0, /* src_mask */
1619 0xffff, /* dst_mask */
1620 FALSE), /* pcrel_offset */
1621
1622 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1623 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1624 16, /* rightshift */
1625 1, /* size (0 = byte, 1 = short, 2 = long) */
1626 16, /* bitsize */
1627 FALSE, /* pc_relative */
1628 0, /* bitpos */
1629 complain_overflow_dont, /* complain_on_overflow */
1630 ppc64_elf_unhandled_reloc, /* special_function */
1631 "R_PPC64_GOT_TLSGD16_HA", /* name */
1632 FALSE, /* partial_inplace */
1633 0, /* src_mask */
1634 0xffff, /* dst_mask */
1635 FALSE), /* pcrel_offset */
1636
1637 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1638 with values (sym+add)@dtpmod and zero, and computes the offset to the
1639 first entry relative to the TOC base (r2). */
1640 HOWTO (R_PPC64_GOT_TLSLD16,
1641 0, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 16, /* bitsize */
1644 FALSE, /* pc_relative */
1645 0, /* bitpos */
1646 complain_overflow_signed, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_GOT_TLSLD16", /* name */
1649 FALSE, /* partial_inplace */
1650 0, /* src_mask */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1653
1654 /* Like GOT_TLSLD16, but no overflow. */
1655 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1656 0, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 16, /* bitsize */
1659 FALSE, /* pc_relative */
1660 0, /* bitpos */
1661 complain_overflow_dont, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_GOT_TLSLD16_LO", /* name */
1664 FALSE, /* partial_inplace */
1665 0, /* src_mask */
1666 0xffff, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1668
1669 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1670 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1671 16, /* rightshift */
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 16, /* bitsize */
1674 FALSE, /* pc_relative */
1675 0, /* bitpos */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_GOT_TLSLD16_HI", /* name */
1679 FALSE, /* partial_inplace */
1680 0, /* src_mask */
1681 0xffff, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1683
1684 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1685 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1686 16, /* rightshift */
1687 1, /* size (0 = byte, 1 = short, 2 = long) */
1688 16, /* bitsize */
1689 FALSE, /* pc_relative */
1690 0, /* bitpos */
1691 complain_overflow_dont, /* complain_on_overflow */
1692 ppc64_elf_unhandled_reloc, /* special_function */
1693 "R_PPC64_GOT_TLSLD16_HA", /* name */
1694 FALSE, /* partial_inplace */
1695 0, /* src_mask */
1696 0xffff, /* dst_mask */
1697 FALSE), /* pcrel_offset */
1698
1699 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1700 the offset to the entry relative to the TOC base (r2). */
1701 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1702 0, /* rightshift */
1703 1, /* size (0 = byte, 1 = short, 2 = long) */
1704 16, /* bitsize */
1705 FALSE, /* pc_relative */
1706 0, /* bitpos */
1707 complain_overflow_signed, /* complain_on_overflow */
1708 ppc64_elf_unhandled_reloc, /* special_function */
1709 "R_PPC64_GOT_DTPREL16_DS", /* name */
1710 FALSE, /* partial_inplace */
1711 0, /* src_mask */
1712 0xfffc, /* dst_mask */
1713 FALSE), /* pcrel_offset */
1714
1715 /* Like GOT_DTPREL16_DS, but no overflow. */
1716 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1717 0, /* rightshift */
1718 1, /* size (0 = byte, 1 = short, 2 = long) */
1719 16, /* bitsize */
1720 FALSE, /* pc_relative */
1721 0, /* bitpos */
1722 complain_overflow_dont, /* complain_on_overflow */
1723 ppc64_elf_unhandled_reloc, /* special_function */
1724 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1725 FALSE, /* partial_inplace */
1726 0, /* src_mask */
1727 0xfffc, /* dst_mask */
1728 FALSE), /* pcrel_offset */
1729
1730 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1731 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1732 16, /* rightshift */
1733 1, /* size (0 = byte, 1 = short, 2 = long) */
1734 16, /* bitsize */
1735 FALSE, /* pc_relative */
1736 0, /* bitpos */
1737 complain_overflow_dont, /* complain_on_overflow */
1738 ppc64_elf_unhandled_reloc, /* special_function */
1739 "R_PPC64_GOT_DTPREL16_HI", /* name */
1740 FALSE, /* partial_inplace */
1741 0, /* src_mask */
1742 0xffff, /* dst_mask */
1743 FALSE), /* pcrel_offset */
1744
1745 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1746 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1747 16, /* rightshift */
1748 1, /* size (0 = byte, 1 = short, 2 = long) */
1749 16, /* bitsize */
1750 FALSE, /* pc_relative */
1751 0, /* bitpos */
1752 complain_overflow_dont, /* complain_on_overflow */
1753 ppc64_elf_unhandled_reloc, /* special_function */
1754 "R_PPC64_GOT_DTPREL16_HA", /* name */
1755 FALSE, /* partial_inplace */
1756 0, /* src_mask */
1757 0xffff, /* dst_mask */
1758 FALSE), /* pcrel_offset */
1759
1760 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1761 offset to the entry relative to the TOC base (r2). */
1762 HOWTO (R_PPC64_GOT_TPREL16_DS,
1763 0, /* rightshift */
1764 1, /* size (0 = byte, 1 = short, 2 = long) */
1765 16, /* bitsize */
1766 FALSE, /* pc_relative */
1767 0, /* bitpos */
1768 complain_overflow_signed, /* complain_on_overflow */
1769 ppc64_elf_unhandled_reloc, /* special_function */
1770 "R_PPC64_GOT_TPREL16_DS", /* name */
1771 FALSE, /* partial_inplace */
1772 0, /* src_mask */
1773 0xfffc, /* dst_mask */
1774 FALSE), /* pcrel_offset */
1775
1776 /* Like GOT_TPREL16_DS, but no overflow. */
1777 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1778 0, /* rightshift */
1779 1, /* size (0 = byte, 1 = short, 2 = long) */
1780 16, /* bitsize */
1781 FALSE, /* pc_relative */
1782 0, /* bitpos */
1783 complain_overflow_dont, /* complain_on_overflow */
1784 ppc64_elf_unhandled_reloc, /* special_function */
1785 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1786 FALSE, /* partial_inplace */
1787 0, /* src_mask */
1788 0xfffc, /* dst_mask */
1789 FALSE), /* pcrel_offset */
1790
1791 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1792 HOWTO (R_PPC64_GOT_TPREL16_HI,
1793 16, /* rightshift */
1794 1, /* size (0 = byte, 1 = short, 2 = long) */
1795 16, /* bitsize */
1796 FALSE, /* pc_relative */
1797 0, /* bitpos */
1798 complain_overflow_dont, /* complain_on_overflow */
1799 ppc64_elf_unhandled_reloc, /* special_function */
1800 "R_PPC64_GOT_TPREL16_HI", /* name */
1801 FALSE, /* partial_inplace */
1802 0, /* src_mask */
1803 0xffff, /* dst_mask */
1804 FALSE), /* pcrel_offset */
1805
1806 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1807 HOWTO (R_PPC64_GOT_TPREL16_HA,
1808 16, /* rightshift */
1809 1, /* size (0 = byte, 1 = short, 2 = long) */
1810 16, /* bitsize */
1811 FALSE, /* pc_relative */
1812 0, /* bitpos */
1813 complain_overflow_dont, /* complain_on_overflow */
1814 ppc64_elf_unhandled_reloc, /* special_function */
1815 "R_PPC64_GOT_TPREL16_HA", /* name */
1816 FALSE, /* partial_inplace */
1817 0, /* src_mask */
1818 0xffff, /* dst_mask */
1819 FALSE), /* pcrel_offset */
1820
1821 /* GNU extension to record C++ vtable hierarchy. */
1822 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1823 0, /* rightshift */
1824 0, /* size (0 = byte, 1 = short, 2 = long) */
1825 0, /* bitsize */
1826 FALSE, /* pc_relative */
1827 0, /* bitpos */
1828 complain_overflow_dont, /* complain_on_overflow */
1829 NULL, /* special_function */
1830 "R_PPC64_GNU_VTINHERIT", /* name */
1831 FALSE, /* partial_inplace */
1832 0, /* src_mask */
1833 0, /* dst_mask */
1834 FALSE), /* pcrel_offset */
1835
1836 /* GNU extension to record C++ vtable member usage. */
1837 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1838 0, /* rightshift */
1839 0, /* size (0 = byte, 1 = short, 2 = long) */
1840 0, /* bitsize */
1841 FALSE, /* pc_relative */
1842 0, /* bitpos */
1843 complain_overflow_dont, /* complain_on_overflow */
1844 NULL, /* special_function */
1845 "R_PPC64_GNU_VTENTRY", /* name */
1846 FALSE, /* partial_inplace */
1847 0, /* src_mask */
1848 0, /* dst_mask */
1849 FALSE), /* pcrel_offset */
1850};
1851
1852\f
1853/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1854 be done. */
1855
1856static void
1857ppc_howto_init (void)
1858{
1859 unsigned int i, type;
1860
1861 for (i = 0;
1862 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1863 i++)
1864 {
1865 type = ppc64_elf_howto_raw[i].type;
1866 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1867 / sizeof (ppc64_elf_howto_table[0])));
1868 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1869 }
1870}
1871
1872static reloc_howto_type *
1873ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1874 bfd_reloc_code_real_type code)
1875{
1876 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1877
1878 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1879 /* Initialize howto table if needed. */
1880 ppc_howto_init ();
1881
1882 switch (code)
1883 {
1884 default:
1885 return NULL;
1886
1887 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1888 break;
1889 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1890 break;
1891 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1892 break;
1893 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1894 break;
1895 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1896 break;
1897 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1898 break;
1899 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1900 break;
1901 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1902 break;
1903 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1904 break;
1905 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1906 break;
1907 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1908 break;
1909 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1910 break;
1911 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1912 break;
1913 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1914 break;
1915 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1916 break;
1917 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1918 break;
1919 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1920 break;
1921 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1922 break;
1923 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1924 break;
1925 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1926 break;
1927 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1928 break;
1929 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1930 break;
1931 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1932 break;
1933 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1934 break;
1935 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1936 break;
1937 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1938 break;
1939 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1940 break;
1941 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1942 break;
1943 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1944 break;
1945 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1946 break;
1947 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1948 break;
1949 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1950 break;
1951 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1952 break;
1953 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1954 break;
1955 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1956 break;
1957 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1958 break;
1959 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1960 break;
1961 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1962 break;
1963 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1964 break;
1965 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1966 break;
1967 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1968 break;
1969 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1970 break;
1971 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1972 break;
1973 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1974 break;
1975 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1976 break;
1977 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1978 break;
1979 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1980 break;
1981 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1982 break;
1983 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1984 break;
1985 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1986 break;
1987 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1988 break;
1989 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1990 break;
1991 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1992 break;
1993 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1994 break;
1995 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1996 break;
1997 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
1998 break;
1999 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2000 break;
2001 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2002 break;
2003 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2004 break;
2005 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2006 break;
2007 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2008 break;
2009 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2010 break;
2011 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2012 break;
2013 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2014 break;
2015 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2016 break;
2017 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2018 break;
2019 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2020 break;
2021 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2022 break;
2023 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2024 break;
2025 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2026 break;
2027 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2028 break;
2029 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2030 break;
2031 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2032 break;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2034 break;
2035 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2036 break;
2037 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2038 break;
2039 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2040 break;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2042 break;
2043 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2044 break;
2045 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2046 break;
2047 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2048 break;
2049 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2050 break;
2051 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2052 break;
2053 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2054 break;
2055 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2056 break;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2058 break;
2059 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2060 break;
2061 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2062 break;
2063 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2064 break;
2065 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2066 break;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2068 break;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2070 break;
2071 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2072 break;
2073 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2074 break;
2075 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2076 break;
2077 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2078 break;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2080 break;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2082 break;
2083 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2084 break;
2085 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2086 break;
2087 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2088 break;
2089 }
2090
2091 return ppc64_elf_howto_table[r];
2092};
2093
2094/* Set the howto pointer for a PowerPC ELF reloc. */
2095
2096static void
2097ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2098 Elf_Internal_Rela *dst)
2099{
2100 unsigned int type;
2101
2102 /* Initialize howto table if needed. */
2103 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2104 ppc_howto_init ();
2105
2106 type = ELF64_R_TYPE (dst->r_info);
2107 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2108 / sizeof (ppc64_elf_howto_table[0])));
2109 cache_ptr->howto = ppc64_elf_howto_table[type];
2110}
2111
2112/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2113
2114static bfd_reloc_status_type
2115ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2116 void *data, asection *input_section,
2117 bfd *output_bfd, char **error_message)
2118{
2119 /* If this is a relocatable link (output_bfd test tells us), just
2120 call the generic function. Any adjustment will be done at final
2121 link time. */
2122 if (output_bfd != NULL)
2123 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2124 input_section, output_bfd, error_message);
2125
2126 /* Adjust the addend for sign extension of the low 16 bits.
2127 We won't actually be using the low 16 bits, so trashing them
2128 doesn't matter. */
2129 reloc_entry->addend += 0x8000;
2130 return bfd_reloc_continue;
2131}
2132
2133static bfd_reloc_status_type
2134ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2135 void *data, asection *input_section,
2136 bfd *output_bfd, char **error_message)
2137{
2138 long insn;
2139 enum elf_ppc64_reloc_type r_type;
2140 bfd_size_type octets;
2141 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2142 bfd_boolean is_power4 = FALSE;
2143
2144 /* If this is a relocatable link (output_bfd test tells us), just
2145 call the generic function. Any adjustment will be done at final
2146 link time. */
2147 if (output_bfd != NULL)
2148 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2149 input_section, output_bfd, error_message);
2150
2151 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2152 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2153 insn &= ~(0x01 << 21);
2154 r_type = reloc_entry->howto->type;
2155 if (r_type == R_PPC64_ADDR14_BRTAKEN
2156 || r_type == R_PPC64_REL14_BRTAKEN)
2157 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2158
2159 if (is_power4)
2160 {
2161 /* Set 'a' bit. This is 0b00010 in BO field for branch
2162 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2163 for branch on CTR insns (BO == 1a00t or 1a01t). */
2164 if ((insn & (0x14 << 21)) == (0x04 << 21))
2165 insn |= 0x02 << 21;
2166 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2167 insn |= 0x08 << 21;
2168 else
2169 return bfd_reloc_continue;
2170 }
2171 else
2172 {
2173 bfd_vma target = 0;
2174 bfd_vma from;
2175
2176 if (!bfd_is_com_section (symbol->section))
2177 target = symbol->value;
2178 target += symbol->section->output_section->vma;
2179 target += symbol->section->output_offset;
2180 target += reloc_entry->addend;
2181
2182 from = (reloc_entry->address
2183 + input_section->output_offset
2184 + input_section->output_section->vma);
2185
2186 /* Invert 'y' bit if not the default. */
2187 if ((bfd_signed_vma) (target - from) < 0)
2188 insn ^= 0x01 << 21;
2189 }
2190 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2191 return bfd_reloc_continue;
2192}
2193
2194static bfd_reloc_status_type
2195ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2196 void *data, asection *input_section,
2197 bfd *output_bfd, char **error_message)
2198{
2199 /* If this is a relocatable link (output_bfd test tells us), just
2200 call the generic function. Any adjustment will be done at final
2201 link time. */
2202 if (output_bfd != NULL)
2203 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2204 input_section, output_bfd, error_message);
2205
2206 /* Subtract the symbol section base address. */
2207 reloc_entry->addend -= symbol->section->output_section->vma;
2208 return bfd_reloc_continue;
2209}
2210
2211static bfd_reloc_status_type
2212ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2213 void *data, asection *input_section,
2214 bfd *output_bfd, char **error_message)
2215{
2216 /* If this is a relocatable link (output_bfd test tells us), just
2217 call the generic function. Any adjustment will be done at final
2218 link time. */
2219 if (output_bfd != NULL)
2220 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2221 input_section, output_bfd, error_message);
2222
2223 /* Subtract the symbol section base address. */
2224 reloc_entry->addend -= symbol->section->output_section->vma;
2225
2226 /* Adjust the addend for sign extension of the low 16 bits. */
2227 reloc_entry->addend += 0x8000;
2228 return bfd_reloc_continue;
2229}
2230
2231static bfd_reloc_status_type
2232ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2233 void *data, asection *input_section,
2234 bfd *output_bfd, char **error_message)
2235{
2236 bfd_vma TOCstart;
2237
2238 /* If this is a relocatable link (output_bfd test tells us), just
2239 call the generic function. Any adjustment will be done at final
2240 link time. */
2241 if (output_bfd != NULL)
2242 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2243 input_section, output_bfd, error_message);
2244
2245 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2246 if (TOCstart == 0)
2247 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2248
2249 /* Subtract the TOC base address. */
2250 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2251 return bfd_reloc_continue;
2252}
2253
2254static bfd_reloc_status_type
2255ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
2258{
2259 bfd_vma TOCstart;
2260
2261 /* If this is a relocatable link (output_bfd test tells us), just
2262 call the generic function. Any adjustment will be done at final
2263 link time. */
2264 if (output_bfd != NULL)
2265 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2266 input_section, output_bfd, error_message);
2267
2268 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2269 if (TOCstart == 0)
2270 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2271
2272 /* Subtract the TOC base address. */
2273 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2274
2275 /* Adjust the addend for sign extension of the low 16 bits. */
2276 reloc_entry->addend += 0x8000;
2277 return bfd_reloc_continue;
2278}
2279
2280static bfd_reloc_status_type
2281ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2282 void *data, asection *input_section,
2283 bfd *output_bfd, char **error_message)
2284{
2285 bfd_vma TOCstart;
2286 bfd_size_type octets;
2287
2288 /* If this is a relocatable link (output_bfd test tells us), just
2289 call the generic function. Any adjustment will be done at final
2290 link time. */
2291 if (output_bfd != NULL)
2292 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2293 input_section, output_bfd, error_message);
2294
2295 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2296 if (TOCstart == 0)
2297 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2298
2299 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2300 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2301 return bfd_reloc_ok;
2302}
2303
2304static bfd_reloc_status_type
2305ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2306 void *data, asection *input_section,
2307 bfd *output_bfd, char **error_message)
2308{
2309 /* If this is a relocatable link (output_bfd test tells us), just
2310 call the generic function. Any adjustment will be done at final
2311 link time. */
2312 if (output_bfd != NULL)
2313 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2314 input_section, output_bfd, error_message);
2315
2316 if (error_message != NULL)
2317 {
2318 static char buf[60];
2319 sprintf (buf, "generic linker can't handle %s",
2320 reloc_entry->howto->name);
2321 *error_message = buf;
2322 }
2323 return bfd_reloc_dangerous;
2324}
2325
2326struct ppc64_elf_obj_tdata
2327{
2328 struct elf_obj_tdata elf;
2329
2330 /* Shortcuts to dynamic linker sections. */
2331 asection *got;
2332 asection *relgot;
2333
2334 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2335 sections means we potentially need one of these for each input bfd. */
2336 union {
2337 bfd_signed_vma refcount;
2338 bfd_vma offset;
2339 } tlsld_got;
2340};
2341
2342#define ppc64_elf_tdata(bfd) \
2343 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2344
2345#define ppc64_tlsld_got(bfd) \
2346 (&ppc64_elf_tdata (bfd)->tlsld_got)
2347
2348/* Override the generic function because we store some extras. */
2349
2350static bfd_boolean
2351ppc64_elf_mkobject (bfd *abfd)
2352{
2353 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2354 abfd->tdata.any = bfd_zalloc (abfd, amt);
2355 if (abfd->tdata.any == NULL)
2356 return FALSE;
2357 return TRUE;
2358}
2359
2360/* Fix bad default arch selected for a 64 bit input bfd when the
2361 default is 32 bit. */
2362
2363static bfd_boolean
2364ppc64_elf_object_p (bfd *abfd)
2365{
2366 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2367 {
2368 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2369
2370 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2371 {
2372 /* Relies on arch after 32 bit default being 64 bit default. */
2373 abfd->arch_info = abfd->arch_info->next;
2374 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2375 }
2376 }
2377 return TRUE;
2378}
2379
2380/* Support for core dump NOTE sections. */
2381
2382static bfd_boolean
2383ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2384{
2385 size_t offset, size;
2386
2387 if (note->descsz != 504)
2388 return FALSE;
2389
2390 /* pr_cursig */
2391 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2392
2393 /* pr_pid */
2394 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2395
2396 /* pr_reg */
2397 offset = 112;
2398 size = 384;
2399
2400 /* Make a ".reg/999" section. */
2401 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2402 size, note->descpos + offset);
2403}
2404
2405static bfd_boolean
2406ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2407{
2408 if (note->descsz != 136)
2409 return FALSE;
2410
2411 elf_tdata (abfd)->core_program
2412 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2413 elf_tdata (abfd)->core_command
2414 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2415
2416 return TRUE;
2417}
2418
2419/* Merge backend specific data from an object file to the output
2420 object file when linking. */
2421
2422static bfd_boolean
2423ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2424{
2425 /* Check if we have the same endianess. */
2426 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2427 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2428 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2429 {
2430 const char *msg;
2431
2432 if (bfd_big_endian (ibfd))
2433 msg = _("%s: compiled for a big endian system "
2434 "and target is little endian");
2435 else
2436 msg = _("%s: compiled for a little endian system "
2437 "and target is big endian");
2438
2439 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
2440
2441 bfd_set_error (bfd_error_wrong_format);
2442 return FALSE;
2443 }
2444
2445 return TRUE;
2446}
2447
2448/* Add extra PPC sections. */
2449
2450static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2451{
2452 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2453 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2454 { ".plt", 4, 0, SHT_NOBITS, 0 },
2455 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2456 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2457 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2458 { NULL, 0, 0, 0, 0 }
2459};
2460
2461struct _ppc64_elf_section_data
2462{
2463 struct bfd_elf_section_data elf;
2464
2465 /* An array with one entry for each opd function descriptor. */
2466 union
2467 {
2468 /* Points to the function code section for local opd entries. */
2469 asection **func_sec;
2470 /* After editing .opd, adjust references to opd local syms. */
2471 long *adjust;
2472 } opd;
2473
2474 /* An array for toc sections, indexed by offset/8.
2475 Specifies the relocation symbol index used at a given toc offset. */
2476 unsigned *t_symndx;
2477};
2478
2479#define ppc64_elf_section_data(sec) \
2480 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2481
2482static bfd_boolean
2483ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2484{
2485 struct _ppc64_elf_section_data *sdata;
2486 bfd_size_type amt = sizeof (*sdata);
2487
2488 sdata = bfd_zalloc (abfd, amt);
2489 if (sdata == NULL)
2490 return FALSE;
2491 sec->used_by_bfd = sdata;
2492
2493 return _bfd_elf_new_section_hook (abfd, sec);
2494}
2495
2496static void *
2497get_opd_info (asection * sec)
2498{
2499 if (sec != NULL
2500 && ppc64_elf_section_data (sec) != NULL
2501 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2502 return ppc64_elf_section_data (sec)->opd.adjust;
2503 return NULL;
2504}
2505\f
2506/* The following functions are specific to the ELF linker, while
2507 functions above are used generally. Those named ppc64_elf_* are
2508 called by the main ELF linker code. They appear in this file more
2509 or less in the order in which they are called. eg.
2510 ppc64_elf_check_relocs is called early in the link process,
2511 ppc64_elf_finish_dynamic_sections is one of the last functions
2512 called.
2513
2514 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2515 functions have both a function code symbol and a function descriptor
2516 symbol. A call to foo in a relocatable object file looks like:
2517
2518 . .text
2519 . x:
2520 . bl .foo
2521 . nop
2522
2523 The function definition in another object file might be:
2524
2525 . .section .opd
2526 . foo: .quad .foo
2527 . .quad .TOC.@tocbase
2528 . .quad 0
2529 .
2530 . .text
2531 . .foo: blr
2532
2533 When the linker resolves the call during a static link, the branch
2534 unsurprisingly just goes to .foo and the .opd information is unused.
2535 If the function definition is in a shared library, things are a little
2536 different: The call goes via a plt call stub, the opd information gets
2537 copied to the plt, and the linker patches the nop.
2538
2539 . x:
2540 . bl .foo_stub
2541 . ld 2,40(1)
2542 .
2543 .
2544 . .foo_stub:
2545 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2546 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2547 . std 2,40(1) # this is the general idea
2548 . ld 11,0(12)
2549 . ld 2,8(12)
2550 . mtctr 11
2551 . ld 11,16(12)
2552 . bctr
2553 .
2554 . .section .plt
2555 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2556
2557 The "reloc ()" notation is supposed to indicate that the linker emits
2558 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2559 copying.
2560
2561 What are the difficulties here? Well, firstly, the relocations
2562 examined by the linker in check_relocs are against the function code
2563 sym .foo, while the dynamic relocation in the plt is emitted against
2564 the function descriptor symbol, foo. Somewhere along the line, we need
2565 to carefully copy dynamic link information from one symbol to the other.
2566 Secondly, the generic part of the elf linker will make .foo a dynamic
2567 symbol as is normal for most other backends. We need foo dynamic
2568 instead, at least for an application final link. However, when
2569 creating a shared library containing foo, we need to have both symbols
2570 dynamic so that references to .foo are satisfied during the early
2571 stages of linking. Otherwise the linker might decide to pull in a
2572 definition from some other object, eg. a static library. */
2573
2574/* The linker needs to keep track of the number of relocs that it
2575 decides to copy as dynamic relocs in check_relocs for each symbol.
2576 This is so that it can later discard them if they are found to be
2577 unnecessary. We store the information in a field extending the
2578 regular ELF linker hash table. */
2579
2580struct ppc_dyn_relocs
2581{
2582 struct ppc_dyn_relocs *next;
2583
2584 /* The input section of the reloc. */
2585 asection *sec;
2586
2587 /* Total number of relocs copied for the input section. */
2588 bfd_size_type count;
2589
2590 /* Number of pc-relative relocs copied for the input section. */
2591 bfd_size_type pc_count;
2592};
2593
2594/* Track GOT entries needed for a given symbol. We might need more
2595 than one got entry per symbol. */
2596struct got_entry
2597{
2598 struct got_entry *next;
2599
2600 /* The symbol addend that we'll be placing in the GOT. */
2601 bfd_vma addend;
2602
2603 /* Unlike other ELF targets, we use separate GOT entries for the same
2604 symbol referenced from different input files. This is to support
2605 automatic multiple TOC/GOT sections, where the TOC base can vary
2606 from one input file to another.
2607
2608 Point to the BFD owning this GOT entry. */
2609 bfd *owner;
2610
2611 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2612 TLS_TPREL or TLS_DTPREL for tls entries. */
2613 char tls_type;
2614
2615 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2616 union
2617 {
2618 bfd_signed_vma refcount;
2619 bfd_vma offset;
2620 } got;
2621};
2622
2623/* The same for PLT. */
2624struct plt_entry
2625{
2626 struct plt_entry *next;
2627
2628 bfd_vma addend;
2629
2630 union
2631 {
2632 bfd_signed_vma refcount;
2633 bfd_vma offset;
2634 } plt;
2635};
2636
2637/* Of those relocs that might be copied as dynamic relocs, this macro
2638 selects those that must be copied when linking a shared library,
2639 even when the symbol is local. */
2640
2641#define MUST_BE_DYN_RELOC(RTYPE) \
2642 ((RTYPE) != R_PPC64_REL32 \
2643 && (RTYPE) != R_PPC64_REL64 \
2644 && (RTYPE) != R_PPC64_REL30)
2645
2646/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2647 copying dynamic variables from a shared lib into an app's dynbss
2648 section, and instead use a dynamic relocation to point into the
2649 shared lib. With code that gcc generates, it's vital that this be
2650 enabled; In the PowerPC64 ABI, the address of a function is actually
2651 the address of a function descriptor, which resides in the .opd
2652 section. gcc uses the descriptor directly rather than going via the
2653 GOT as some other ABI's do, which means that initialized function
2654 pointers must reference the descriptor. Thus, a function pointer
2655 initialized to the address of a function in a shared library will
2656 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2657 redefines the function descriptor symbol to point to the copy. This
2658 presents a problem as a plt entry for that function is also
2659 initialized from the function descriptor symbol and the copy reloc
2660 may not be initialized first. */
2661#define ELIMINATE_COPY_RELOCS 1
2662
2663/* Section name for stubs is the associated section name plus this
2664 string. */
2665#define STUB_SUFFIX ".stub"
2666
2667/* Linker stubs.
2668 ppc_stub_long_branch:
2669 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2670 destination, but a 24 bit branch in a stub section will reach.
2671 . b dest
2672
2673 ppc_stub_plt_branch:
2674 Similar to the above, but a 24 bit branch in the stub section won't
2675 reach its destination.
2676 . addis %r12,%r2,xxx@toc@ha
2677 . ld %r11,xxx@toc@l(%r12)
2678 . mtctr %r11
2679 . bctr
2680
2681 ppc_stub_plt_call:
2682 Used to call a function in a shared library. If it so happens that
2683 the plt entry referenced crosses a 64k boundary, then an extra
2684 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
2685 xxx+16 as appropriate.
2686 . addis %r12,%r2,xxx@toc@ha
2687 . std %r2,40(%r1)
2688 . ld %r11,xxx+0@toc@l(%r12)
2689 . ld %r2,xxx+8@toc@l(%r12)
2690 . mtctr %r11
2691 . ld %r11,xxx+16@toc@l(%r12)
2692 . bctr
2693
2694 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2695 code to adjust the value and save r2 to support multiple toc sections.
2696 A ppc_stub_long_branch with an r2 offset looks like:
2697 . std %r2,40(%r1)
2698 . addis %r2,%r2,off@ha
2699 . addi %r2,%r2,off@l
2700 . b dest
2701
2702 A ppc_stub_plt_branch with an r2 offset looks like:
2703 . std %r2,40(%r1)
2704 . addis %r12,%r2,xxx@toc@ha
2705 . ld %r11,xxx@toc@l(%r12)
2706 . addis %r2,%r2,off@ha
2707 . addi %r2,%r2,off@l
2708 . mtctr %r11
2709 . bctr
2710*/
2711
2712enum ppc_stub_type {
2713 ppc_stub_none,
2714 ppc_stub_long_branch,
2715 ppc_stub_long_branch_r2off,
2716 ppc_stub_plt_branch,
2717 ppc_stub_plt_branch_r2off,
2718 ppc_stub_plt_call
2719};
2720
2721struct ppc_stub_hash_entry {
2722
2723 /* Base hash table entry structure. */
2724 struct bfd_hash_entry root;
2725
2726 enum ppc_stub_type stub_type;
2727
2728 /* The stub section. */
2729 asection *stub_sec;
2730
2731 /* Offset within stub_sec of the beginning of this stub. */
2732 bfd_vma stub_offset;
2733
2734 /* Given the symbol's value and its section we can determine its final
2735 value when building the stubs (so the stub knows where to jump. */
2736 bfd_vma target_value;
2737 asection *target_section;
2738
2739 /* The symbol table entry, if any, that this was derived from. */
2740 struct ppc_link_hash_entry *h;
2741
2742 /* And the reloc addend that this was derived from. */
2743 bfd_vma addend;
2744
2745 /* Where this stub is being called from, or, in the case of combined
2746 stub sections, the first input section in the group. */
2747 asection *id_sec;
2748};
2749
2750struct ppc_branch_hash_entry {
2751
2752 /* Base hash table entry structure. */
2753 struct bfd_hash_entry root;
2754
2755 /* Offset within .branch_lt. */
2756 unsigned int offset;
2757
2758 /* Generation marker. */
2759 unsigned int iter;
2760};
2761
2762struct ppc_link_hash_entry
2763{
2764 struct elf_link_hash_entry elf;
2765
2766 /* A pointer to the most recently used stub hash entry against this
2767 symbol. */
2768 struct ppc_stub_hash_entry *stub_cache;
2769
2770 /* Track dynamic relocs copied for this symbol. */
2771 struct ppc_dyn_relocs *dyn_relocs;
2772
2773 /* Link between function code and descriptor symbols. */
2774 struct ppc_link_hash_entry *oh;
2775
2776 /* Flag function code and descriptor symbols. */
2777 unsigned int is_func:1;
2778 unsigned int is_func_descriptor:1;
2779
2780 /* Whether global opd sym has been adjusted or not. */
2781 unsigned int adjust_done:1;
2782
2783 /* Contexts in which symbol is used in the GOT (or TOC).
2784 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2785 corresponding relocs are encountered during check_relocs.
2786 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2787 indicate the corresponding GOT entry type is not needed.
2788 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2789 a TPREL one. We use a separate flag rather than setting TPREL
2790 just for convenience in distinguishing the two cases. */
2791#define TLS_GD 1 /* GD reloc. */
2792#define TLS_LD 2 /* LD reloc. */
2793#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2794#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2795#define TLS_TLS 16 /* Any TLS reloc. */
2796#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2797#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2798 char tls_mask;
2799};
2800
2801/* ppc64 ELF linker hash table. */
2802
2803struct ppc_link_hash_table
2804{
2805 struct elf_link_hash_table elf;
2806
2807 /* The stub hash table. */
2808 struct bfd_hash_table stub_hash_table;
2809
2810 /* Another hash table for plt_branch stubs. */
2811 struct bfd_hash_table branch_hash_table;
2812
2813 /* Linker stub bfd. */
2814 bfd *stub_bfd;
2815
2816 /* Linker call-backs. */
2817 asection * (*add_stub_section) (const char *, asection *);
2818 void (*layout_sections_again) (void);
2819
2820 /* Array to keep track of which stub sections have been created, and
2821 information on stub grouping. */
2822 struct map_stub {
2823 /* This is the section to which stubs in the group will be attached. */
2824 asection *link_sec;
2825 /* The stub section. */
2826 asection *stub_sec;
2827 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2828 bfd_vma toc_off;
2829 } *stub_group;
2830
2831 /* Support for multiple toc sections. */
2832 unsigned int no_multi_toc;
2833 unsigned int multi_toc_needed;
2834
2835 /* Temp used when calculating TOC pointers. */
2836 bfd_vma toc_curr;
2837
2838 /* Highest input section id. */
2839 int top_id;
2840
2841 /* Highest output section index. */
2842 int top_index;
2843
2844 /* List of input sections for each output section. */
2845 asection **input_list;
2846
2847 /* Short-cuts to get to dynamic linker sections. */
2848 asection *got;
2849 asection *plt;
2850 asection *relplt;
2851 asection *dynbss;
2852 asection *relbss;
2853 asection *glink;
2854 asection *sfpr;
2855 asection *brlt;
2856 asection *relbrlt;
2857
2858 /* Shortcut to .__tls_get_addr. */
2859 struct elf_link_hash_entry *tls_get_addr;
2860
2861 /* Statistics. */
2862 unsigned long stub_count[ppc_stub_plt_call];
2863
2864 /* Set if we should emit symbols for stubs. */
2865 unsigned int emit_stub_syms;
2866
2867 /* Set on error. */
2868 unsigned int stub_error;
2869
2870 /* Flag set when small branches are detected. Used to
2871 select suitable defaults for the stub group size. */
2872 unsigned int has_14bit_branch;
2873
2874 /* Incremented every time we size stubs. */
2875 unsigned int stub_iteration;
2876
2877 /* Small local sym to section mapping cache. */
2878 struct sym_sec_cache sym_sec;
2879};
2880
2881/* Get the ppc64 ELF linker hash table from a link_info structure. */
2882
2883#define ppc_hash_table(p) \
2884 ((struct ppc_link_hash_table *) ((p)->hash))
2885
2886#define ppc_stub_hash_lookup(table, string, create, copy) \
2887 ((struct ppc_stub_hash_entry *) \
2888 bfd_hash_lookup ((table), (string), (create), (copy)))
2889
2890#define ppc_branch_hash_lookup(table, string, create, copy) \
2891 ((struct ppc_branch_hash_entry *) \
2892 bfd_hash_lookup ((table), (string), (create), (copy)))
2893
2894/* Create an entry in the stub hash table. */
2895
2896static struct bfd_hash_entry *
2897stub_hash_newfunc (struct bfd_hash_entry *entry,
2898 struct bfd_hash_table *table,
2899 const char *string)
2900{
2901 /* Allocate the structure if it has not already been allocated by a
2902 subclass. */
2903 if (entry == NULL)
2904 {
2905 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2906 if (entry == NULL)
2907 return entry;
2908 }
2909
2910 /* Call the allocation method of the superclass. */
2911 entry = bfd_hash_newfunc (entry, table, string);
2912 if (entry != NULL)
2913 {
2914 struct ppc_stub_hash_entry *eh;
2915
2916 /* Initialize the local fields. */
2917 eh = (struct ppc_stub_hash_entry *) entry;
2918 eh->stub_type = ppc_stub_none;
2919 eh->stub_sec = NULL;
2920 eh->stub_offset = 0;
2921 eh->target_value = 0;
2922 eh->target_section = NULL;
2923 eh->h = NULL;
2924 eh->id_sec = NULL;
2925 }
2926
2927 return entry;
2928}
2929
2930/* Create an entry in the branch hash table. */
2931
2932static struct bfd_hash_entry *
2933branch_hash_newfunc (struct bfd_hash_entry *entry,
2934 struct bfd_hash_table *table,
2935 const char *string)
2936{
2937 /* Allocate the structure if it has not already been allocated by a
2938 subclass. */
2939 if (entry == NULL)
2940 {
2941 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2942 if (entry == NULL)
2943 return entry;
2944 }
2945
2946 /* Call the allocation method of the superclass. */
2947 entry = bfd_hash_newfunc (entry, table, string);
2948 if (entry != NULL)
2949 {
2950 struct ppc_branch_hash_entry *eh;
2951
2952 /* Initialize the local fields. */
2953 eh = (struct ppc_branch_hash_entry *) entry;
2954 eh->offset = 0;
2955 eh->iter = 0;
2956 }
2957
2958 return entry;
2959}
2960
2961/* Create an entry in a ppc64 ELF linker hash table. */
2962
2963static struct bfd_hash_entry *
2964link_hash_newfunc (struct bfd_hash_entry *entry,
2965 struct bfd_hash_table *table,
2966 const char *string)
2967{
2968 /* Allocate the structure if it has not already been allocated by a
2969 subclass. */
2970 if (entry == NULL)
2971 {
2972 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2973 if (entry == NULL)
2974 return entry;
2975 }
2976
2977 /* Call the allocation method of the superclass. */
2978 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2979 if (entry != NULL)
2980 {
2981 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2982
2983 eh->stub_cache = NULL;
2984 eh->dyn_relocs = NULL;
2985 eh->oh = NULL;
2986 eh->is_func = 0;
2987 eh->is_func_descriptor = 0;
2988 eh->adjust_done = 0;
2989 eh->tls_mask = 0;
2990 }
2991
2992 return entry;
2993}
2994
2995/* Create a ppc64 ELF linker hash table. */
2996
2997static struct bfd_link_hash_table *
2998ppc64_elf_link_hash_table_create (bfd *abfd)
2999{
3000 struct ppc_link_hash_table *htab;
3001 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3002
3003 htab = bfd_zmalloc (amt);
3004 if (htab == NULL)
3005 return NULL;
3006
3007 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3008 {
3009 free (htab);
3010 return NULL;
3011 }
3012
3013 /* Init the stub hash table too. */
3014 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3015 return NULL;
3016
3017 /* And the branch hash table. */
3018 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3019 return NULL;
3020
3021 /* Initializing two fields of the union is just cosmetic. We really
3022 only care about glist, but when compiled on a 32-bit host the
3023 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3024 debugger inspection of these fields look nicer. */
3025 htab->elf.init_refcount.refcount = 0;
3026 htab->elf.init_refcount.glist = NULL;
3027 htab->elf.init_offset.offset = 0;
3028 htab->elf.init_offset.glist = NULL;
3029
3030 return &htab->elf.root;
3031}
3032
3033/* Free the derived linker hash table. */
3034
3035static void
3036ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3037{
3038 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3039
3040 bfd_hash_table_free (&ret->stub_hash_table);
3041 bfd_hash_table_free (&ret->branch_hash_table);
3042 _bfd_generic_link_hash_table_free (hash);
3043}
3044
3045/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3046
3047void
3048ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3049{
3050 struct ppc_link_hash_table *htab;
3051
3052 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3053
3054/* Always hook our dynamic sections into the first bfd, which is the
3055 linker created stub bfd. This ensures that the GOT header is at
3056 the start of the output TOC section. */
3057 htab = ppc_hash_table (info);
3058 htab->stub_bfd = abfd;
3059 htab->elf.dynobj = abfd;
3060}
3061
3062/* Build a name for an entry in the stub hash table. */
3063
3064static char *
3065ppc_stub_name (const asection *input_section,
3066 const asection *sym_sec,
3067 const struct ppc_link_hash_entry *h,
3068 const Elf_Internal_Rela *rel)
3069{
3070 char *stub_name;
3071 bfd_size_type len;
3072
3073 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3074 offsets from a sym as a branch target? In fact, we could
3075 probably assume the addend is always zero. */
3076 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3077
3078 if (h)
3079 {
3080 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3081 stub_name = bfd_malloc (len);
3082 if (stub_name != NULL)
3083 {
3084 sprintf (stub_name, "%08x.%s+%x",
3085 input_section->id & 0xffffffff,
3086 h->elf.root.root.string,
3087 (int) rel->r_addend & 0xffffffff);
3088 }
3089 }
3090 else
3091 {
3092 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3093 stub_name = bfd_malloc (len);
3094 if (stub_name != NULL)
3095 {
3096 sprintf (stub_name, "%08x.%x:%x+%x",
3097 input_section->id & 0xffffffff,
3098 sym_sec->id & 0xffffffff,
3099 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3100 (int) rel->r_addend & 0xffffffff);
3101 }
3102 }
3103 return stub_name;
3104}
3105
3106/* Look up an entry in the stub hash. Stub entries are cached because
3107 creating the stub name takes a bit of time. */
3108
3109static struct ppc_stub_hash_entry *
3110ppc_get_stub_entry (const asection *input_section,
3111 const asection *sym_sec,
3112 struct elf_link_hash_entry *hash,
3113 const Elf_Internal_Rela *rel,
3114 struct ppc_link_hash_table *htab)
3115{
3116 struct ppc_stub_hash_entry *stub_entry;
3117 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3118 const asection *id_sec;
3119
3120 /* If this input section is part of a group of sections sharing one
3121 stub section, then use the id of the first section in the group.
3122 Stub names need to include a section id, as there may well be
3123 more than one stub used to reach say, printf, and we need to
3124 distinguish between them. */
3125 id_sec = htab->stub_group[input_section->id].link_sec;
3126
3127 if (h != NULL && h->stub_cache != NULL
3128 && h->stub_cache->h == h
3129 && h->stub_cache->id_sec == id_sec)
3130 {
3131 stub_entry = h->stub_cache;
3132 }
3133 else
3134 {
3135 char *stub_name;
3136
3137 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3138 if (stub_name == NULL)
3139 return NULL;
3140
3141 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3142 stub_name, FALSE, FALSE);
3143 if (h != NULL)
3144 h->stub_cache = stub_entry;
3145
3146 free (stub_name);
3147 }
3148
3149 return stub_entry;
3150}
3151
3152/* Add a new stub entry to the stub hash. Not all fields of the new
3153 stub entry are initialised. */
3154
3155static struct ppc_stub_hash_entry *
3156ppc_add_stub (const char *stub_name,
3157 asection *section,
3158 struct ppc_link_hash_table *htab)
3159{
3160 asection *link_sec;
3161 asection *stub_sec;
3162 struct ppc_stub_hash_entry *stub_entry;
3163
3164 link_sec = htab->stub_group[section->id].link_sec;
3165 stub_sec = htab->stub_group[section->id].stub_sec;
3166 if (stub_sec == NULL)
3167 {
3168 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3169 if (stub_sec == NULL)
3170 {
3171 size_t namelen;
3172 bfd_size_type len;
3173 char *s_name;
3174
3175 namelen = strlen (link_sec->name);
3176 len = namelen + sizeof (STUB_SUFFIX);
3177 s_name = bfd_alloc (htab->stub_bfd, len);
3178 if (s_name == NULL)
3179 return NULL;
3180
3181 memcpy (s_name, link_sec->name, namelen);
3182 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3183 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3184 if (stub_sec == NULL)
3185 return NULL;
3186 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3187 }
3188 htab->stub_group[section->id].stub_sec = stub_sec;
3189 }
3190
3191 /* Enter this entry into the linker stub hash table. */
3192 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3193 TRUE, FALSE);
3194 if (stub_entry == NULL)
3195 {
3196 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3197 bfd_archive_filename (section->owner),
3198 stub_name);
3199 return NULL;
3200 }
3201
3202 stub_entry->stub_sec = stub_sec;
3203 stub_entry->stub_offset = 0;
3204 stub_entry->id_sec = link_sec;
3205 return stub_entry;
3206}
3207
3208/* Create sections for linker generated code. */
3209
3210static bfd_boolean
3211create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3212{
3213 struct ppc_link_hash_table *htab;
3214 flagword flags;
3215
3216 htab = ppc_hash_table (info);
3217
3218 /* Create .sfpr for code to save and restore fp regs. */
3219 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3220 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3221 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3222 if (htab->sfpr == NULL
3223 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3224 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3225 return FALSE;
3226
3227 /* Create .glink for lazy dynamic linking support. */
3228 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3229 if (htab->glink == NULL
3230 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3231 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3232 return FALSE;
3233
3234 /* Create .branch_lt for plt_branch stubs. */
3235 flags = (SEC_ALLOC | SEC_LOAD
3236 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3237 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3238 if (htab->brlt == NULL
3239 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3240 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3241 return FALSE;
3242
3243 if (info->shared)
3244 {
3245 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3246 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3247 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3248 if (!htab->relbrlt
3249 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3250 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3251 return FALSE;
3252 }
3253 return TRUE;
3254}
3255
3256/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3257 not already done. */
3258
3259static bfd_boolean
3260create_got_section (bfd *abfd, struct bfd_link_info *info)
3261{
3262 asection *got, *relgot;
3263 flagword flags;
3264 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3265
3266 if (!htab->got)
3267 {
3268 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3269 return FALSE;
3270
3271 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3272 if (!htab->got)
3273 abort ();
3274 }
3275
3276 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3277 | SEC_LINKER_CREATED);
3278
3279 got = bfd_make_section (abfd, ".got");
3280 if (!got
3281 || !bfd_set_section_flags (abfd, got, flags)
3282 || !bfd_set_section_alignment (abfd, got, 3))
3283 return FALSE;
3284
3285 relgot = bfd_make_section (abfd, ".rela.got");
3286 if (!relgot
3287 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3288 || ! bfd_set_section_alignment (abfd, relgot, 3))
3289 return FALSE;
3290
3291 ppc64_elf_tdata (abfd)->got = got;
3292 ppc64_elf_tdata (abfd)->relgot = relgot;
3293 return TRUE;
3294}
3295
3296/* Create the dynamic sections, and set up shortcuts. */
3297
3298static bfd_boolean
3299ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3300{
3301 struct ppc_link_hash_table *htab;
3302
3303 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3304 return FALSE;
3305
3306 htab = ppc_hash_table (info);
3307 if (!htab->got)
3308 htab->got = bfd_get_section_by_name (dynobj, ".got");
3309 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3310 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3311 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3312 if (!info->shared)
3313 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3314
3315 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3316 || (!info->shared && !htab->relbss))
3317 abort ();
3318
3319 return TRUE;
3320}
3321
3322/* Copy the extra info we tack onto an elf_link_hash_entry. */
3323
3324static void
3325ppc64_elf_copy_indirect_symbol
3326 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3327 struct elf_link_hash_entry *dir,
3328 struct elf_link_hash_entry *ind)
3329{
3330 struct ppc_link_hash_entry *edir, *eind;
3331 flagword mask;
3332
3333 edir = (struct ppc_link_hash_entry *) dir;
3334 eind = (struct ppc_link_hash_entry *) ind;
3335
3336 /* Copy over any dynamic relocs we may have on the indirect sym. */
3337 if (eind->dyn_relocs != NULL)
3338 {
3339 if (edir->dyn_relocs != NULL)
3340 {
3341 struct ppc_dyn_relocs **pp;
3342 struct ppc_dyn_relocs *p;
3343
3344 if (eind->elf.root.type == bfd_link_hash_indirect)
3345 abort ();
3346
3347 /* Add reloc counts against the weak sym to the strong sym
3348 list. Merge any entries against the same section. */
3349 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3350 {
3351 struct ppc_dyn_relocs *q;
3352
3353 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3354 if (q->sec == p->sec)
3355 {
3356 q->pc_count += p->pc_count;
3357 q->count += p->count;
3358 *pp = p->next;
3359 break;
3360 }
3361 if (q == NULL)
3362 pp = &p->next;
3363 }
3364 *pp = edir->dyn_relocs;
3365 }
3366
3367 edir->dyn_relocs = eind->dyn_relocs;
3368 eind->dyn_relocs = NULL;
3369 }
3370
3371 edir->is_func |= eind->is_func;
3372 edir->is_func_descriptor |= eind->is_func_descriptor;
3373 edir->tls_mask |= eind->tls_mask;
3374
3375 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3376 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3377 | ELF_LINK_HASH_NEEDS_PLT);
3378 /* If called to transfer flags for a weakdef during processing
3379 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3380 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3381 if (ELIMINATE_COPY_RELOCS
3382 && eind->elf.root.type != bfd_link_hash_indirect
3383 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3384 mask &= ~ELF_LINK_NON_GOT_REF;
3385
3386 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3387
3388 /* If we were called to copy over info for a weak sym, that's all. */
3389 if (eind->elf.root.type != bfd_link_hash_indirect)
3390 return;
3391
3392 /* Copy over got entries that we may have already seen to the
3393 symbol which just became indirect. */
3394 if (eind->elf.got.glist != NULL)
3395 {
3396 if (edir->elf.got.glist != NULL)
3397 {
3398 struct got_entry **entp;
3399 struct got_entry *ent;
3400
3401 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3402 {
3403 struct got_entry *dent;
3404
3405 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3406 if (dent->addend == ent->addend
3407 && dent->owner == ent->owner
3408 && dent->tls_type == ent->tls_type)
3409 {
3410 dent->got.refcount += ent->got.refcount;
3411 *entp = ent->next;
3412 break;
3413 }
3414 if (dent == NULL)
3415 entp = &ent->next;
3416 }
3417 *entp = edir->elf.got.glist;
3418 }
3419
3420 edir->elf.got.glist = eind->elf.got.glist;
3421 eind->elf.got.glist = NULL;
3422 }
3423
3424 /* And plt entries. */
3425 if (eind->elf.plt.plist != NULL)
3426 {
3427 if (edir->elf.plt.plist != NULL)
3428 {
3429 struct plt_entry **entp;
3430 struct plt_entry *ent;
3431
3432 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3433 {
3434 struct plt_entry *dent;
3435
3436 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3437 if (dent->addend == ent->addend)
3438 {
3439 dent->plt.refcount += ent->plt.refcount;
3440 *entp = ent->next;
3441 break;
3442 }
3443 if (dent == NULL)
3444 entp = &ent->next;
3445 }
3446 *entp = edir->elf.plt.plist;
3447 }
3448
3449 edir->elf.plt.plist = eind->elf.plt.plist;
3450 eind->elf.plt.plist = NULL;
3451 }
3452
3453 if (edir->elf.dynindx == -1)
3454 {
3455 edir->elf.dynindx = eind->elf.dynindx;
3456 edir->elf.dynstr_index = eind->elf.dynstr_index;
3457 eind->elf.dynindx = -1;
3458 eind->elf.dynstr_index = 0;
3459 }
3460 else
3461 BFD_ASSERT (eind->elf.dynindx == -1);
3462}
3463
3464/* Hack symbols defined in .opd sections to be function type. */
3465
3466static bfd_boolean
3467ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
3468 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3469 Elf_Internal_Sym *isym,
3470 const char **name ATTRIBUTE_UNUSED,
3471 flagword *flags ATTRIBUTE_UNUSED,
3472 asection **sec,
3473 bfd_vma *value ATTRIBUTE_UNUSED)
3474{
3475 if (strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
3476 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
3477 return TRUE;
3478}
3479
3480static bfd_boolean
3481update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
3482 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
3483{
3484 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3485 char *local_got_tls_masks;
3486
3487 if (local_got_ents == NULL)
3488 {
3489 bfd_size_type size = symtab_hdr->sh_info;
3490
3491 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3492 local_got_ents = bfd_zalloc (abfd, size);
3493 if (local_got_ents == NULL)
3494 return FALSE;
3495 elf_local_got_ents (abfd) = local_got_ents;
3496 }
3497
3498 if ((tls_type & TLS_EXPLICIT) == 0)
3499 {
3500 struct got_entry *ent;
3501
3502 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3503 if (ent->addend == r_addend
3504 && ent->owner == abfd
3505 && ent->tls_type == tls_type)
3506 break;
3507 if (ent == NULL)
3508 {
3509 bfd_size_type amt = sizeof (*ent);
3510 ent = bfd_alloc (abfd, amt);
3511 if (ent == NULL)
3512 return FALSE;
3513 ent->next = local_got_ents[r_symndx];
3514 ent->addend = r_addend;
3515 ent->owner = abfd;
3516 ent->tls_type = tls_type;
3517 ent->got.refcount = 0;
3518 local_got_ents[r_symndx] = ent;
3519 }
3520 ent->got.refcount += 1;
3521 }
3522
3523 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3524 local_got_tls_masks[r_symndx] |= tls_type;
3525 return TRUE;
3526}
3527
3528static bfd_boolean
3529update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
3530{
3531 struct plt_entry *ent;
3532
3533 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3534 if (ent->addend == addend)
3535 break;
3536 if (ent == NULL)
3537 {
3538 bfd_size_type amt = sizeof (*ent);
3539 ent = bfd_alloc (abfd, amt);
3540 if (ent == NULL)
3541 return FALSE;
3542 ent->next = eh->elf.plt.plist;
3543 ent->addend = addend;
3544 ent->plt.refcount = 0;
3545 eh->elf.plt.plist = ent;
3546 }
3547 ent->plt.refcount += 1;
3548 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3549 eh->is_func = 1;
3550 return TRUE;
3551}
3552
3553/* Find the function descriptor hash entry from the given function code
3554 hash entry FH. Link the entries via their OH fields. */
3555static struct ppc_link_hash_entry *
3556get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3557{
3558 struct ppc_link_hash_entry *fdh = fh->oh;
3559
3560 if (fdh == NULL)
3561 {
3562 const char *fd_name = fh->elf.root.root.string + 1;
3563
3564 fdh = (struct ppc_link_hash_entry *)
3565 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3566 if (fdh != NULL)
3567 {
3568 fdh->is_func_descriptor = 1;
3569 fdh->oh = fh;
3570 fh->is_func = 1;
3571 fh->oh = fdh;
3572 }
3573 }
3574
3575 return fdh;
3576}
3577
3578/* Look through the relocs for a section during the first phase, and
3579 calculate needed space in the global offset table, procedure
3580 linkage table, and dynamic reloc sections. */
3581
3582static bfd_boolean
3583ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
3584 asection *sec, const Elf_Internal_Rela *relocs)
3585{
3586 struct ppc_link_hash_table *htab;
3587 Elf_Internal_Shdr *symtab_hdr;
3588 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3589 const Elf_Internal_Rela *rel;
3590 const Elf_Internal_Rela *rel_end;
3591 asection *sreloc;
3592 asection **opd_sym_map;
3593
3594 if (info->relocatable)
3595 return TRUE;
3596
3597 /* Don't do anything special with non-loaded, non-alloced sections.
3598 In particular, any relocs in such sections should not affect GOT
3599 and PLT reference counting (ie. we don't allow them to create GOT
3600 or PLT entries), there's no possibility or desire to optimize TLS
3601 relocs, and there's not much point in propagating relocs to shared
3602 libs that the dynamic linker won't relocate. */
3603 if ((sec->flags & SEC_ALLOC) == 0)
3604 return TRUE;
3605
3606 htab = ppc_hash_table (info);
3607 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3608
3609 sym_hashes = elf_sym_hashes (abfd);
3610 sym_hashes_end = (sym_hashes
3611 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3612 - symtab_hdr->sh_info);
3613
3614 sreloc = NULL;
3615 opd_sym_map = NULL;
3616 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3617 {
3618 /* Garbage collection needs some extra help with .opd sections.
3619 We don't want to necessarily keep everything referenced by
3620 relocs in .opd, as that would keep all functions. Instead,
3621 if we reference an .opd symbol (a function descriptor), we
3622 want to keep the function code symbol's section. This is
3623 easy for global symbols, but for local syms we need to keep
3624 information about the associated function section. Later, if
3625 edit_opd deletes entries, we'll use this array to adjust
3626 local syms in .opd. */
3627 union opd_info {
3628 asection *func_section;
3629 long entry_adjust;
3630 };
3631 bfd_size_type amt;
3632
3633 amt = sec->size * sizeof (union opd_info) / 24;
3634 opd_sym_map = bfd_zalloc (abfd, amt);
3635 if (opd_sym_map == NULL)
3636 return FALSE;
3637 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3638 }
3639
3640 if (htab->sfpr == NULL
3641 && !create_linkage_sections (htab->elf.dynobj, info))
3642 return FALSE;
3643
3644 rel_end = relocs + sec->reloc_count;
3645 for (rel = relocs; rel < rel_end; rel++)
3646 {
3647 unsigned long r_symndx;
3648 struct elf_link_hash_entry *h;
3649 enum elf_ppc64_reloc_type r_type;
3650 int tls_type = 0;
3651
3652 r_symndx = ELF64_R_SYM (rel->r_info);
3653 if (r_symndx < symtab_hdr->sh_info)
3654 h = NULL;
3655 else
3656 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3657
3658 r_type = ELF64_R_TYPE (rel->r_info);
3659 switch (r_type)
3660 {
3661 case R_PPC64_GOT_TLSLD16:
3662 case R_PPC64_GOT_TLSLD16_LO:
3663 case R_PPC64_GOT_TLSLD16_HI:
3664 case R_PPC64_GOT_TLSLD16_HA:
3665 ppc64_tlsld_got (abfd)->refcount += 1;
3666 tls_type = TLS_TLS | TLS_LD;
3667 goto dogottls;
3668
3669 case R_PPC64_GOT_TLSGD16:
3670 case R_PPC64_GOT_TLSGD16_LO:
3671 case R_PPC64_GOT_TLSGD16_HI:
3672 case R_PPC64_GOT_TLSGD16_HA:
3673 tls_type = TLS_TLS | TLS_GD;
3674 goto dogottls;
3675
3676 case R_PPC64_GOT_TPREL16_DS:
3677 case R_PPC64_GOT_TPREL16_LO_DS:
3678 case R_PPC64_GOT_TPREL16_HI:
3679 case R_PPC64_GOT_TPREL16_HA:
3680 if (info->shared)
3681 info->flags |= DF_STATIC_TLS;
3682 tls_type = TLS_TLS | TLS_TPREL;
3683 goto dogottls;
3684
3685 case R_PPC64_GOT_DTPREL16_DS:
3686 case R_PPC64_GOT_DTPREL16_LO_DS:
3687 case R_PPC64_GOT_DTPREL16_HI:
3688 case R_PPC64_GOT_DTPREL16_HA:
3689 tls_type = TLS_TLS | TLS_DTPREL;
3690 dogottls:
3691 sec->has_tls_reloc = 1;
3692 /* Fall thru */
3693
3694 case R_PPC64_GOT16:
3695 case R_PPC64_GOT16_DS:
3696 case R_PPC64_GOT16_HA:
3697 case R_PPC64_GOT16_HI:
3698 case R_PPC64_GOT16_LO:
3699 case R_PPC64_GOT16_LO_DS:
3700 /* This symbol requires a global offset table entry. */
3701 sec->has_gp_reloc = 1;
3702 if (ppc64_elf_tdata (abfd)->got == NULL
3703 && !create_got_section (abfd, info))
3704 return FALSE;
3705
3706 if (h != NULL)
3707 {
3708 struct ppc_link_hash_entry *eh;
3709 struct got_entry *ent;
3710
3711 eh = (struct ppc_link_hash_entry *) h;
3712 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3713 if (ent->addend == rel->r_addend
3714 && ent->owner == abfd
3715 && ent->tls_type == tls_type)
3716 break;
3717 if (ent == NULL)
3718 {
3719 bfd_size_type amt = sizeof (*ent);
3720 ent = bfd_alloc (abfd, amt);
3721 if (ent == NULL)
3722 return FALSE;
3723 ent->next = eh->elf.got.glist;
3724 ent->addend = rel->r_addend;
3725 ent->owner = abfd;
3726 ent->tls_type = tls_type;
3727 ent->got.refcount = 0;
3728 eh->elf.got.glist = ent;
3729 }
3730 ent->got.refcount += 1;
3731 eh->tls_mask |= tls_type;
3732 }
3733 else
3734 /* This is a global offset table entry for a local symbol. */
3735 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3736 rel->r_addend, tls_type))
3737 return FALSE;
3738 break;
3739
3740 case R_PPC64_PLT16_HA:
3741 case R_PPC64_PLT16_HI:
3742 case R_PPC64_PLT16_LO:
3743 case R_PPC64_PLT32:
3744 case R_PPC64_PLT64:
3745 /* This symbol requires a procedure linkage table entry. We
3746 actually build the entry in adjust_dynamic_symbol,
3747 because this might be a case of linking PIC code without
3748 linking in any dynamic objects, in which case we don't
3749 need to generate a procedure linkage table after all. */
3750 if (h == NULL)
3751 {
3752 /* It does not make sense to have a procedure linkage
3753 table entry for a local symbol. */
3754 bfd_set_error (bfd_error_bad_value);
3755 return FALSE;
3756 }
3757 else
3758 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3759 rel->r_addend))
3760 return FALSE;
3761 break;
3762
3763 /* The following relocations don't need to propagate the
3764 relocation if linking a shared object since they are
3765 section relative. */
3766 case R_PPC64_SECTOFF:
3767 case R_PPC64_SECTOFF_LO:
3768 case R_PPC64_SECTOFF_HI:
3769 case R_PPC64_SECTOFF_HA:
3770 case R_PPC64_SECTOFF_DS:
3771 case R_PPC64_SECTOFF_LO_DS:
3772 case R_PPC64_DTPREL16:
3773 case R_PPC64_DTPREL16_LO:
3774 case R_PPC64_DTPREL16_HI:
3775 case R_PPC64_DTPREL16_HA:
3776 case R_PPC64_DTPREL16_DS:
3777 case R_PPC64_DTPREL16_LO_DS:
3778 case R_PPC64_DTPREL16_HIGHER:
3779 case R_PPC64_DTPREL16_HIGHERA:
3780 case R_PPC64_DTPREL16_HIGHEST:
3781 case R_PPC64_DTPREL16_HIGHESTA:
3782 break;
3783
3784 /* Nor do these. */
3785 case R_PPC64_TOC16:
3786 case R_PPC64_TOC16_LO:
3787 case R_PPC64_TOC16_HI:
3788 case R_PPC64_TOC16_HA:
3789 case R_PPC64_TOC16_DS:
3790 case R_PPC64_TOC16_LO_DS:
3791 sec->has_gp_reloc = 1;
3792 break;
3793
3794 /* This relocation describes the C++ object vtable hierarchy.
3795 Reconstruct it for later use during GC. */
3796 case R_PPC64_GNU_VTINHERIT:
3797 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3798 return FALSE;
3799 break;
3800
3801 /* This relocation describes which C++ vtable entries are actually
3802 used. Record for later use during GC. */
3803 case R_PPC64_GNU_VTENTRY:
3804 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3805 return FALSE;
3806 break;
3807
3808 case R_PPC64_REL14:
3809 case R_PPC64_REL14_BRTAKEN:
3810 case R_PPC64_REL14_BRNTAKEN:
3811 htab->has_14bit_branch = 1;
3812 /* Fall through. */
3813
3814 case R_PPC64_REL24:
3815 if (h != NULL
3816 && h->root.root.string[0] == '.'
3817 && h->root.root.string[1] != 0)
3818 {
3819 /* We may need a .plt entry if the function this reloc
3820 refers to is in a shared lib. */
3821 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3822 rel->r_addend))
3823 return FALSE;
3824 if (h == htab->tls_get_addr)
3825 sec->has_tls_reloc = 1;
3826 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3827 == 0)
3828 && (h->root.root.string[15] == 0
3829 || h->root.root.string[15] == '@'))
3830 {
3831 htab->tls_get_addr = h;
3832 sec->has_tls_reloc = 1;
3833 }
3834 }
3835 break;
3836
3837 case R_PPC64_TPREL64:
3838 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3839 if (info->shared)
3840 info->flags |= DF_STATIC_TLS;
3841 goto dotlstoc;
3842
3843 case R_PPC64_DTPMOD64:
3844 if (rel + 1 < rel_end
3845 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3846 && rel[1].r_offset == rel->r_offset + 8)
3847 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3848 else
3849 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3850 goto dotlstoc;
3851
3852 case R_PPC64_DTPREL64:
3853 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3854 if (rel != relocs
3855 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3856 && rel[-1].r_offset == rel->r_offset - 8)
3857 /* This is the second reloc of a dtpmod, dtprel pair.
3858 Don't mark with TLS_DTPREL. */
3859 goto dodyn;
3860
3861 dotlstoc:
3862 sec->has_tls_reloc = 1;
3863 if (h != NULL)
3864 {
3865 struct ppc_link_hash_entry *eh;
3866 eh = (struct ppc_link_hash_entry *) h;
3867 eh->tls_mask |= tls_type;
3868 }
3869 else
3870 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3871 rel->r_addend, tls_type))
3872 return FALSE;
3873
3874 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3875 {
3876 /* One extra to simplify get_tls_mask. */
3877 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
3878 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
3879 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3880 return FALSE;
3881 }
3882 BFD_ASSERT (rel->r_offset % 8 == 0);
3883 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3884
3885 /* Mark the second slot of a GD or LD entry.
3886 -1 to indicate GD and -2 to indicate LD. */
3887 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3888 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3889 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3890 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3891 goto dodyn;
3892
3893 case R_PPC64_TPREL16:
3894 case R_PPC64_TPREL16_LO:
3895 case R_PPC64_TPREL16_HI:
3896 case R_PPC64_TPREL16_HA:
3897 case R_PPC64_TPREL16_DS:
3898 case R_PPC64_TPREL16_LO_DS:
3899 case R_PPC64_TPREL16_HIGHER:
3900 case R_PPC64_TPREL16_HIGHERA:
3901 case R_PPC64_TPREL16_HIGHEST:
3902 case R_PPC64_TPREL16_HIGHESTA:
3903 if (info->shared)
3904 {
3905 info->flags |= DF_STATIC_TLS;
3906 goto dodyn;
3907 }
3908 break;
3909
3910 case R_PPC64_ADDR64:
3911 if (opd_sym_map != NULL
3912 && h != NULL
3913 && h->root.root.string[0] == '.'
3914 && h->root.root.string[1] != 0)
3915 get_fdh ((struct ppc_link_hash_entry *) h, htab);
3916
3917 if (opd_sym_map != NULL
3918 && h == NULL
3919 && rel + 1 < rel_end
3920 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
3921 {
3922 asection *s;
3923
3924 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3925 r_symndx);
3926 if (s == NULL)
3927 return FALSE;
3928 else if (s != sec)
3929 opd_sym_map[rel->r_offset / 24] = s;
3930 }
3931 /* Fall through. */
3932
3933 case R_PPC64_REL30:
3934 case R_PPC64_REL32:
3935 case R_PPC64_REL64:
3936 case R_PPC64_ADDR14:
3937 case R_PPC64_ADDR14_BRNTAKEN:
3938 case R_PPC64_ADDR14_BRTAKEN:
3939 case R_PPC64_ADDR16:
3940 case R_PPC64_ADDR16_DS:
3941 case R_PPC64_ADDR16_HA:
3942 case R_PPC64_ADDR16_HI:
3943 case R_PPC64_ADDR16_HIGHER:
3944 case R_PPC64_ADDR16_HIGHERA:
3945 case R_PPC64_ADDR16_HIGHEST:
3946 case R_PPC64_ADDR16_HIGHESTA:
3947 case R_PPC64_ADDR16_LO:
3948 case R_PPC64_ADDR16_LO_DS:
3949 case R_PPC64_ADDR24:
3950 case R_PPC64_ADDR32:
3951 case R_PPC64_UADDR16:
3952 case R_PPC64_UADDR32:
3953 case R_PPC64_UADDR64:
3954 case R_PPC64_TOC:
3955 if (h != NULL && !info->shared)
3956 /* We may need a copy reloc. */
3957 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3958
3959 /* Don't propagate .opd relocs. */
3960 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3961 break;
3962
3963 /* If we are creating a shared library, and this is a reloc
3964 against a global symbol, or a non PC relative reloc
3965 against a local symbol, then we need to copy the reloc
3966 into the shared library. However, if we are linking with
3967 -Bsymbolic, we do not need to copy a reloc against a
3968 global symbol which is defined in an object we are
3969 including in the link (i.e., DEF_REGULAR is set). At
3970 this point we have not seen all the input files, so it is
3971 possible that DEF_REGULAR is not set now but will be set
3972 later (it is never cleared). In case of a weak definition,
3973 DEF_REGULAR may be cleared later by a strong definition in
3974 a shared library. We account for that possibility below by
3975 storing information in the dyn_relocs field of the hash
3976 table entry. A similar situation occurs when creating
3977 shared libraries and symbol visibility changes render the
3978 symbol local.
3979
3980 If on the other hand, we are creating an executable, we
3981 may need to keep relocations for symbols satisfied by a
3982 dynamic library if we manage to avoid copy relocs for the
3983 symbol. */
3984 dodyn:
3985 if ((info->shared
3986 && (MUST_BE_DYN_RELOC (r_type)
3987 || (h != NULL
3988 && (! info->symbolic
3989 || h->root.type == bfd_link_hash_defweak
3990 || (h->elf_link_hash_flags
3991 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3992 || (ELIMINATE_COPY_RELOCS
3993 && !info->shared
3994 && h != NULL
3995 && (h->root.type == bfd_link_hash_defweak
3996 || (h->elf_link_hash_flags
3997 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3998 {
3999 struct ppc_dyn_relocs *p;
4000 struct ppc_dyn_relocs **head;
4001
4002 /* We must copy these reloc types into the output file.
4003 Create a reloc section in dynobj and make room for
4004 this reloc. */
4005 if (sreloc == NULL)
4006 {
4007 const char *name;
4008 bfd *dynobj;
4009
4010 name = (bfd_elf_string_from_elf_section
4011 (abfd,
4012 elf_elfheader (abfd)->e_shstrndx,
4013 elf_section_data (sec)->rel_hdr.sh_name));
4014 if (name == NULL)
4015 return FALSE;
4016
4017 if (strncmp (name, ".rela", 5) != 0
4018 || strcmp (bfd_get_section_name (abfd, sec),
4019 name + 5) != 0)
4020 {
4021 (*_bfd_error_handler)
4022 (_("%s: bad relocation section name `%s\'"),
4023 bfd_archive_filename (abfd), name);
4024 bfd_set_error (bfd_error_bad_value);
4025 }
4026
4027 dynobj = htab->elf.dynobj;
4028 sreloc = bfd_get_section_by_name (dynobj, name);
4029 if (sreloc == NULL)
4030 {
4031 flagword flags;
4032
4033 sreloc = bfd_make_section (dynobj, name);
4034 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4035 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4036 if ((sec->flags & SEC_ALLOC) != 0)
4037 flags |= SEC_ALLOC | SEC_LOAD;
4038 if (sreloc == NULL
4039 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4040 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4041 return FALSE;
4042 }
4043 elf_section_data (sec)->sreloc = sreloc;
4044 }
4045
4046 /* If this is a global symbol, we count the number of
4047 relocations we need for this symbol. */
4048 if (h != NULL)
4049 {
4050 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4051 }
4052 else
4053 {
4054 /* Track dynamic relocs needed for local syms too.
4055 We really need local syms available to do this
4056 easily. Oh well. */
4057
4058 asection *s;
4059 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4060 sec, r_symndx);
4061 if (s == NULL)
4062 return FALSE;
4063
4064 head = ((struct ppc_dyn_relocs **)
4065 &elf_section_data (s)->local_dynrel);
4066 }
4067
4068 p = *head;
4069 if (p == NULL || p->sec != sec)
4070 {
4071 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4072 if (p == NULL)
4073 return FALSE;
4074 p->next = *head;
4075 *head = p;
4076 p->sec = sec;
4077 p->count = 0;
4078 p->pc_count = 0;
4079 }
4080
4081 p->count += 1;
4082 if (!MUST_BE_DYN_RELOC (r_type))
4083 p->pc_count += 1;
4084 }
4085 break;
4086
4087 default:
4088 break;
4089 }
4090 }
4091
4092 return TRUE;
4093}
4094
4095/* Return the section that should be marked against GC for a given
4096 relocation. */
4097
4098static asection *
4099ppc64_elf_gc_mark_hook (asection *sec,
4100 struct bfd_link_info *info,
4101 Elf_Internal_Rela *rel,
4102 struct elf_link_hash_entry *h,
4103 Elf_Internal_Sym *sym)
4104{
4105 asection *rsec;
4106
4107 /* First mark all our entry sym sections. */
4108 if (info->gc_sym_list != NULL)
4109 {
4110 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4111 struct bfd_sym_chain *sym = info->gc_sym_list;
4112
4113 info->gc_sym_list = NULL;
4114 do
4115 {
4116 struct ppc_link_hash_entry *eh;
4117
4118 eh = (struct ppc_link_hash_entry *)
4119 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4120 if (eh == NULL)
4121 continue;
4122 if (eh->elf.root.type != bfd_link_hash_defined
4123 && eh->elf.root.type != bfd_link_hash_defweak)
4124 continue;
4125
4126 if (eh->is_func_descriptor)
4127 rsec = eh->oh->elf.root.u.def.section;
4128 else
4129 continue;
4130
4131 if (!rsec->gc_mark)
4132 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4133
4134 rsec = eh->elf.root.u.def.section;
4135 if (!rsec->gc_mark)
4136 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4137
4138 sym = sym->next;
4139 }
4140 while (sym != NULL);
4141 }
4142
4143 /* Syms return NULL if we're marking .opd, so we avoid marking all
4144 function sections, as all functions are referenced in .opd. */
4145 rsec = NULL;
4146 if (get_opd_info (sec) != NULL)
4147 return rsec;
4148
4149 if (h != NULL)
4150 {
4151 enum elf_ppc64_reloc_type r_type;
4152 struct ppc_link_hash_entry *eh;
4153
4154 r_type = ELF64_R_TYPE (rel->r_info);
4155 switch (r_type)
4156 {
4157 case R_PPC64_GNU_VTINHERIT:
4158 case R_PPC64_GNU_VTENTRY:
4159 break;
4160
4161 default:
4162 switch (h->root.type)
4163 {
4164 case bfd_link_hash_defined:
4165 case bfd_link_hash_defweak:
4166 eh = (struct ppc_link_hash_entry *) h;
4167 if (eh->oh != NULL && eh->oh->is_func_descriptor)
4168 eh = eh->oh;
4169
4170 /* Function descriptor syms cause the associated
4171 function code sym section to be marked. */
4172 if (eh->is_func_descriptor)
4173 {
4174 /* They also mark their opd section. */
4175 if (!eh->elf.root.u.def.section->gc_mark)
4176 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
4177 ppc64_elf_gc_mark_hook);
4178
4179 rsec = eh->oh->elf.root.u.def.section;
4180 }
4181 else
4182 rsec = h->root.u.def.section;
4183 break;
4184
4185 case bfd_link_hash_common:
4186 rsec = h->root.u.c.p->section;
4187 break;
4188
4189 default:
4190 break;
4191 }
4192 }
4193 }
4194 else
4195 {
4196 asection **opd_sym_section;
4197
4198 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4199 opd_sym_section = get_opd_info (rsec);
4200 if (opd_sym_section != NULL)
4201 {
4202 if (!rsec->gc_mark)
4203 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4204
4205 rsec = opd_sym_section[sym->st_value / 24];
4206 }
4207 }
4208
4209 return rsec;
4210}
4211
4212/* Update the .got, .plt. and dynamic reloc reference counts for the
4213 section being removed. */
4214
4215static bfd_boolean
4216ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4217 asection *sec, const Elf_Internal_Rela *relocs)
4218{
4219 struct ppc_link_hash_table *htab;
4220 Elf_Internal_Shdr *symtab_hdr;
4221 struct elf_link_hash_entry **sym_hashes;
4222 struct got_entry **local_got_ents;
4223 const Elf_Internal_Rela *rel, *relend;
4224
4225 if ((sec->flags & SEC_ALLOC) == 0)
4226 return TRUE;
4227
4228 elf_section_data (sec)->local_dynrel = NULL;
4229
4230 htab = ppc_hash_table (info);
4231 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4232 sym_hashes = elf_sym_hashes (abfd);
4233 local_got_ents = elf_local_got_ents (abfd);
4234
4235 relend = relocs + sec->reloc_count;
4236 for (rel = relocs; rel < relend; rel++)
4237 {
4238 unsigned long r_symndx;
4239 enum elf_ppc64_reloc_type r_type;
4240 struct elf_link_hash_entry *h = NULL;
4241 char tls_type = 0;
4242
4243 r_symndx = ELF64_R_SYM (rel->r_info);
4244 r_type = ELF64_R_TYPE (rel->r_info);
4245 if (r_symndx >= symtab_hdr->sh_info)
4246 {
4247 struct ppc_link_hash_entry *eh;
4248 struct ppc_dyn_relocs **pp;
4249 struct ppc_dyn_relocs *p;
4250
4251 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4252 eh = (struct ppc_link_hash_entry *) h;
4253
4254 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4255 if (p->sec == sec)
4256 {
4257 /* Everything must go for SEC. */
4258 *pp = p->next;
4259 break;
4260 }
4261 }
4262
4263 switch (r_type)
4264 {
4265 case R_PPC64_GOT_TLSLD16:
4266 case R_PPC64_GOT_TLSLD16_LO:
4267 case R_PPC64_GOT_TLSLD16_HI:
4268 case R_PPC64_GOT_TLSLD16_HA:
4269 ppc64_tlsld_got (abfd)->refcount -= 1;
4270 tls_type = TLS_TLS | TLS_LD;
4271 goto dogot;
4272
4273 case R_PPC64_GOT_TLSGD16:
4274 case R_PPC64_GOT_TLSGD16_LO:
4275 case R_PPC64_GOT_TLSGD16_HI:
4276 case R_PPC64_GOT_TLSGD16_HA:
4277 tls_type = TLS_TLS | TLS_GD;
4278 goto dogot;
4279
4280 case R_PPC64_GOT_TPREL16_DS:
4281 case R_PPC64_GOT_TPREL16_LO_DS:
4282 case R_PPC64_GOT_TPREL16_HI:
4283 case R_PPC64_GOT_TPREL16_HA:
4284 tls_type = TLS_TLS | TLS_TPREL;
4285 goto dogot;
4286
4287 case R_PPC64_GOT_DTPREL16_DS:
4288 case R_PPC64_GOT_DTPREL16_LO_DS:
4289 case R_PPC64_GOT_DTPREL16_HI:
4290 case R_PPC64_GOT_DTPREL16_HA:
4291 tls_type = TLS_TLS | TLS_DTPREL;
4292 goto dogot;
4293
4294 case R_PPC64_GOT16:
4295 case R_PPC64_GOT16_DS:
4296 case R_PPC64_GOT16_HA:
4297 case R_PPC64_GOT16_HI:
4298 case R_PPC64_GOT16_LO:
4299 case R_PPC64_GOT16_LO_DS:
4300 dogot:
4301 {
4302 struct got_entry *ent;
4303
4304 if (h != NULL)
4305 ent = h->got.glist;
4306 else
4307 ent = local_got_ents[r_symndx];
4308
4309 for (; ent != NULL; ent = ent->next)
4310 if (ent->addend == rel->r_addend
4311 && ent->owner == abfd
4312 && ent->tls_type == tls_type)
4313 break;
4314 if (ent == NULL)
4315 abort ();
4316 if (ent->got.refcount > 0)
4317 ent->got.refcount -= 1;
4318 }
4319 break;
4320
4321 case R_PPC64_PLT16_HA:
4322 case R_PPC64_PLT16_HI:
4323 case R_PPC64_PLT16_LO:
4324 case R_PPC64_PLT32:
4325 case R_PPC64_PLT64:
4326 case R_PPC64_REL14:
4327 case R_PPC64_REL14_BRNTAKEN:
4328 case R_PPC64_REL14_BRTAKEN:
4329 case R_PPC64_REL24:
4330 if (h != NULL)
4331 {
4332 struct plt_entry *ent;
4333
4334 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4335 if (ent->addend == rel->r_addend)
4336 break;
4337 if (ent == NULL)
4338 abort ();
4339 if (ent->plt.refcount > 0)
4340 ent->plt.refcount -= 1;
4341 }
4342 break;
4343
4344 default:
4345 break;
4346 }
4347 }
4348 return TRUE;
4349}
4350
4351/* Called via elf_link_hash_traverse to transfer dynamic linking
4352 information on function code symbol entries to their corresponding
4353 function descriptor symbol entries. */
4354static bfd_boolean
4355func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
4356{
4357 struct bfd_link_info *info;
4358 struct ppc_link_hash_table *htab;
4359 struct plt_entry *ent;
4360 struct ppc_link_hash_entry *fh;
4361 struct ppc_link_hash_entry *fdh;
4362 bfd_boolean force_local;
4363
4364 fh = (struct ppc_link_hash_entry *) h;
4365 if (fh->elf.root.type == bfd_link_hash_indirect)
4366 return TRUE;
4367
4368 if (fh->elf.root.type == bfd_link_hash_warning)
4369 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
4370
4371 info = inf;
4372 htab = ppc_hash_table (info);
4373
4374 /* If this is a function code symbol, transfer dynamic linking
4375 information to the function descriptor symbol. */
4376 if (!fh->is_func)
4377 return TRUE;
4378
4379 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
4380 if (ent->plt.refcount > 0)
4381 break;
4382 if (ent == NULL
4383 || fh->elf.root.root.string[0] != '.'
4384 || fh->elf.root.root.string[1] == '\0')
4385 return TRUE;
4386
4387 /* Find the corresponding function descriptor symbol. Create it
4388 as undefined if necessary. */
4389
4390 fdh = get_fdh (fh, htab);
4391 if (fdh != NULL)
4392 while (fdh->elf.root.type == bfd_link_hash_indirect
4393 || fdh->elf.root.type == bfd_link_hash_warning)
4394 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
4395
4396 if (fdh == NULL
4397 && info->shared
4398 && (fh->elf.root.type == bfd_link_hash_undefined
4399 || fh->elf.root.type == bfd_link_hash_undefweak))
4400 {
4401 bfd *abfd;
4402 asymbol *newsym;
4403 struct bfd_link_hash_entry *bh;
4404
4405 abfd = fh->elf.root.u.undef.abfd;
4406 newsym = bfd_make_empty_symbol (abfd);
4407 newsym->name = fh->elf.root.root.string + 1;
4408 newsym->section = bfd_und_section_ptr;
4409 newsym->value = 0;
4410 newsym->flags = BSF_OBJECT;
4411 if (fh->elf.root.type == bfd_link_hash_undefweak)
4412 newsym->flags |= BSF_WEAK;
4413
4414 bh = &fdh->elf.root;
4415 if ( !(_bfd_generic_link_add_one_symbol
4416 (info, abfd, newsym->name, newsym->flags,
4417 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4418 {
4419 return FALSE;
4420 }
4421 fdh = (struct ppc_link_hash_entry *) bh;
4422 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4423 fdh->elf.size = 24;
4424 fdh->elf.type = STT_OBJECT;
4425 }
4426
4427 if (fdh != NULL
4428 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4429 && (info->shared
4430 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4431 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
4432 || (fdh->elf.root.type == bfd_link_hash_undefweak
4433 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
4434 {
4435 if (fdh->elf.dynindx == -1)
4436 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
4437 return FALSE;
4438 fdh->elf.elf_link_hash_flags
4439 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
4440 | ELF_LINK_HASH_REF_DYNAMIC
4441 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4442 | ELF_LINK_NON_GOT_REF));
4443 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
4444 {
4445 fdh->elf.plt.plist = fh->elf.plt.plist;
4446 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4447 }
4448 fdh->is_func_descriptor = 1;
4449 fdh->oh = fh;
4450 fh->oh = fdh;
4451 }
4452
4453 /* Now that the info is on the function descriptor, clear the
4454 function code sym info. Any function code syms for which we
4455 don't have a definition in a regular file, we force local.
4456 This prevents a shared library from exporting syms that have
4457 been imported from another library. Function code syms that
4458 are really in the library we must leave global to prevent the
4459 linker dragging in a definition from a static library. */
4460 force_local
4461 = (info->shared
4462 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4463 || fdh == NULL
4464 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4465 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
4466 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4467
4468 return TRUE;
4469}
4470
4471#define MIN_SAVE_FPR 14
4472#define MAX_SAVE_FPR 31
4473
4474/* Called near the start of bfd_elf_size_dynamic_sections. We use
4475 this hook to a) provide some gcc support functions, and b) transfer
4476 dynamic linking information gathered so far on function code symbol
4477 entries, to their corresponding function descriptor symbol entries. */
4478static bfd_boolean
4479ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
4480 struct bfd_link_info *info)
4481{
4482 struct ppc_link_hash_table *htab;
4483 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4484 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4485 unsigned int i;
4486 struct elf_link_hash_entry *h;
4487 bfd_byte *p;
4488 char sym[10];
4489
4490 htab = ppc_hash_table (info);
4491
4492 if (htab->sfpr == NULL)
4493 /* We don't have any relocs. */
4494 return TRUE;
4495
4496 /* First provide any missing ._savef* and ._restf* functions. */
4497 memcpy (sym, "._savef14", 10);
4498 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4499 {
4500 sym[7] = i / 10 + '0';
4501 sym[8] = i % 10 + '0';
4502 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4503 if (h != NULL
4504 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4505 {
4506 if (lowest_savef > i)
4507 lowest_savef = i;
4508 h->root.type = bfd_link_hash_defined;
4509 h->root.u.def.section = htab->sfpr;
4510 h->root.u.def.value = (i - lowest_savef) * 4;
4511 h->type = STT_FUNC;
4512 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4513 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4514 }
4515 }
4516
4517 memcpy (sym, "._restf14", 10);
4518 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4519 {
4520 sym[7] = i / 10 + '0';
4521 sym[8] = i % 10 + '0';
4522 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4523 if (h != NULL
4524 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4525 {
4526 if (lowest_restf > i)
4527 lowest_restf = i;
4528 h->root.type = bfd_link_hash_defined;
4529 h->root.u.def.section = htab->sfpr;
4530 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4531 + (i - lowest_restf) * 4);
4532 h->type = STT_FUNC;
4533 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4534 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4535 }
4536 }
4537
4538 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
4539
4540 htab->sfpr->size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4541 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4542
4543 if (htab->sfpr->size == 0)
4544 {
4545 _bfd_strip_section_from_output (info, htab->sfpr);
4546 return TRUE;
4547 }
4548
4549 p = bfd_alloc (htab->elf.dynobj, htab->sfpr->size);
4550 if (p == NULL)
4551 return FALSE;
4552 htab->sfpr->contents = p;
4553
4554 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4555 {
4556 unsigned int fpr = i << 21;
4557 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4558 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4559 p += 4;
4560 }
4561 if (lowest_savef <= MAX_SAVE_FPR)
4562 {
4563 bfd_put_32 (htab->elf.dynobj, BLR, p);
4564 p += 4;
4565 }
4566
4567 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4568 {
4569 unsigned int fpr = i << 21;
4570 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4571 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4572 p += 4;
4573 }
4574 if (lowest_restf <= MAX_SAVE_FPR)
4575 bfd_put_32 (htab->elf.dynobj, BLR, p);
4576
4577 return TRUE;
4578}
4579
4580/* Adjust a symbol defined by a dynamic object and referenced by a
4581 regular object. The current definition is in some section of the
4582 dynamic object, but we're not including those sections. We have to
4583 change the definition to something the rest of the link can
4584 understand. */
4585
4586static bfd_boolean
4587ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4588 struct elf_link_hash_entry *h)
4589{
4590 struct ppc_link_hash_table *htab;
4591 asection *s;
4592 unsigned int power_of_two;
4593
4594 htab = ppc_hash_table (info);
4595
4596 /* Deal with function syms. */
4597 if (h->type == STT_FUNC
4598 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4599 {
4600 /* Clear procedure linkage table information for any symbol that
4601 won't need a .plt entry. */
4602 struct plt_entry *ent;
4603 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4604 if (ent->plt.refcount > 0)
4605 break;
4606 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4607 || ent == NULL
4608 || SYMBOL_CALLS_LOCAL (info, h)
4609 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4610 && h->root.type == bfd_link_hash_undefweak))
4611 {
4612 h->plt.plist = NULL;
4613 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4614 }
4615 }
4616 else
4617 h->plt.plist = NULL;
4618
4619 /* If this is a weak symbol, and there is a real definition, the
4620 processor independent code will have arranged for us to see the
4621 real definition first, and we can just use the same value. */
4622 if (h->weakdef != NULL)
4623 {
4624 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4625 || h->weakdef->root.type == bfd_link_hash_defweak);
4626 h->root.u.def.section = h->weakdef->root.u.def.section;
4627 h->root.u.def.value = h->weakdef->root.u.def.value;
4628 if (ELIMINATE_COPY_RELOCS)
4629 h->elf_link_hash_flags
4630 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4631 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4632 return TRUE;
4633 }
4634
4635 /* If we are creating a shared library, we must presume that the
4636 only references to the symbol are via the global offset table.
4637 For such cases we need not do anything here; the relocations will
4638 be handled correctly by relocate_section. */
4639 if (info->shared)
4640 return TRUE;
4641
4642 /* If there are no references to this symbol that do not use the
4643 GOT, we don't need to generate a copy reloc. */
4644 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4645 return TRUE;
4646
4647 if (ELIMINATE_COPY_RELOCS)
4648 {
4649 struct ppc_link_hash_entry * eh;
4650 struct ppc_dyn_relocs *p;
4651
4652 eh = (struct ppc_link_hash_entry *) h;
4653 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4654 {
4655 s = p->sec->output_section;
4656 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4657 break;
4658 }
4659
4660 /* If we didn't find any dynamic relocs in read-only sections, then
4661 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4662 if (p == NULL)
4663 {
4664 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4665 return TRUE;
4666 }
4667 }
4668
4669 if (h->plt.plist != NULL)
4670 {
4671 /* We should never get here, but unfortunately there are versions
4672 of gcc out there that improperly (for this ABI) put initialized
4673 function pointers, vtable refs and suchlike in read-only
4674 sections. Allow them to proceed, but warn that this might
4675 break at runtime. */
4676 (*_bfd_error_handler)
4677 (_("copy reloc against `%s' requires lazy plt linking; "
4678 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4679 h->root.root.string);
4680 }
4681
4682 /* This is a reference to a symbol defined by a dynamic object which
4683 is not a function. */
4684
4685 /* We must allocate the symbol in our .dynbss section, which will
4686 become part of the .bss section of the executable. There will be
4687 an entry for this symbol in the .dynsym section. The dynamic
4688 object will contain position independent code, so all references
4689 from the dynamic object to this symbol will go through the global
4690 offset table. The dynamic linker will use the .dynsym entry to
4691 determine the address it must put in the global offset table, so
4692 both the dynamic object and the regular object will refer to the
4693 same memory location for the variable. */
4694
4695 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4696 to copy the initial value out of the dynamic object and into the
4697 runtime process image. We need to remember the offset into the
4698 .rela.bss section we are going to use. */
4699 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4700 {
4701 htab->relbss->size += sizeof (Elf64_External_Rela);
4702 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4703 }
4704
4705 /* We need to figure out the alignment required for this symbol. I
4706 have no idea how ELF linkers handle this. */
4707 power_of_two = bfd_log2 (h->size);
4708 if (power_of_two > 4)
4709 power_of_two = 4;
4710
4711 /* Apply the required alignment. */
4712 s = htab->dynbss;
4713 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
4714 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4715 {
4716 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4717 return FALSE;
4718 }
4719
4720 /* Define the symbol as being at this point in the section. */
4721 h->root.u.def.section = s;
4722 h->root.u.def.value = s->size;
4723
4724 /* Increment the section size to make room for the symbol. */
4725 s->size += h->size;
4726
4727 return TRUE;
4728}
4729
4730/* If given a function descriptor symbol, hide both the function code
4731 sym and the descriptor. */
4732static void
4733ppc64_elf_hide_symbol (struct bfd_link_info *info,
4734 struct elf_link_hash_entry *h,
4735 bfd_boolean force_local)
4736{
4737 struct ppc_link_hash_entry *eh;
4738 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4739
4740 eh = (struct ppc_link_hash_entry *) h;
4741 if (eh->is_func_descriptor)
4742 {
4743 struct ppc_link_hash_entry *fh = eh->oh;
4744
4745 if (fh == NULL)
4746 {
4747 const char *p, *q;
4748 struct ppc_link_hash_table *htab;
4749 char save;
4750
4751 /* We aren't supposed to use alloca in BFD because on
4752 systems which do not have alloca the version in libiberty
4753 calls xmalloc, which might cause the program to crash
4754 when it runs out of memory. This function doesn't have a
4755 return status, so there's no way to gracefully return an
4756 error. So cheat. We know that string[-1] can be safely
4757 accessed; It's either a string in an ELF string table,
4758 or allocated in an objalloc structure. */
4759
4760 p = eh->elf.root.root.string - 1;
4761 save = *p;
4762 *(char *) p = '.';
4763 htab = ppc_hash_table (info);
4764 fh = (struct ppc_link_hash_entry *)
4765 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4766 *(char *) p = save;
4767
4768 /* Unfortunately, if it so happens that the string we were
4769 looking for was allocated immediately before this string,
4770 then we overwrote the string terminator. That's the only
4771 reason the lookup should fail. */
4772 if (fh == NULL)
4773 {
4774 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
4775 while (q >= eh->elf.root.root.string && *q == *p)
4776 --q, --p;
4777 if (q < eh->elf.root.root.string && *p == '.')
4778 fh = (struct ppc_link_hash_entry *)
4779 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4780 }
4781 if (fh != NULL)
4782 {
4783 eh->oh = fh;
4784 fh->oh = eh;
4785 }
4786 }
4787 if (fh != NULL)
4788 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4789 }
4790}
4791
4792static bfd_boolean
4793get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp,
4794 asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp,
4795 unsigned long r_symndx, bfd *ibfd)
4796{
4797 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4798
4799 if (r_symndx >= symtab_hdr->sh_info)
4800 {
4801 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4802 struct elf_link_hash_entry *h;
4803
4804 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4805 while (h->root.type == bfd_link_hash_indirect
4806 || h->root.type == bfd_link_hash_warning)
4807 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4808
4809 if (hp != NULL)
4810 *hp = h;
4811
4812 if (symp != NULL)
4813 *symp = NULL;
4814
4815 if (symsecp != NULL)
4816 {
4817 asection *symsec = NULL;
4818 if (h->root.type == bfd_link_hash_defined
4819 || h->root.type == bfd_link_hash_defweak)
4820 symsec = h->root.u.def.section;
4821 *symsecp = symsec;
4822 }
4823
4824 if (tls_maskp != NULL)
4825 {
4826 struct ppc_link_hash_entry *eh;
4827
4828 eh = (struct ppc_link_hash_entry *) h;
4829 *tls_maskp = &eh->tls_mask;
4830 }
4831 }
4832 else
4833 {
4834 Elf_Internal_Sym *sym;
4835 Elf_Internal_Sym *locsyms = *locsymsp;
4836
4837 if (locsyms == NULL)
4838 {
4839 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4840 if (locsyms == NULL)
4841 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4842 symtab_hdr->sh_info,
4843 0, NULL, NULL, NULL);
4844 if (locsyms == NULL)
4845 return FALSE;
4846 *locsymsp = locsyms;
4847 }
4848 sym = locsyms + r_symndx;
4849
4850 if (hp != NULL)
4851 *hp = NULL;
4852
4853 if (symp != NULL)
4854 *symp = sym;
4855
4856 if (symsecp != NULL)
4857 {
4858 asection *symsec = NULL;
4859 if ((sym->st_shndx != SHN_UNDEF
4860 && sym->st_shndx < SHN_LORESERVE)
4861 || sym->st_shndx > SHN_HIRESERVE)
4862 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4863 *symsecp = symsec;
4864 }
4865
4866 if (tls_maskp != NULL)
4867 {
4868 struct got_entry **lgot_ents;
4869 char *tls_mask;
4870
4871 tls_mask = NULL;
4872 lgot_ents = elf_local_got_ents (ibfd);
4873 if (lgot_ents != NULL)
4874 {
4875 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4876 tls_mask = &lgot_masks[r_symndx];
4877 }
4878 *tls_maskp = tls_mask;
4879 }
4880 }
4881 return TRUE;
4882}
4883
4884/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4885 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4886 type suitable for optimization, and 1 otherwise. */
4887
4888static int
4889get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
4890 Elf_Internal_Sym **locsymsp,
4891 const Elf_Internal_Rela *rel, bfd *ibfd)
4892{
4893 unsigned long r_symndx;
4894 int next_r;
4895 struct elf_link_hash_entry *h;
4896 Elf_Internal_Sym *sym;
4897 asection *sec;
4898 bfd_vma off;
4899
4900 r_symndx = ELF64_R_SYM (rel->r_info);
4901 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4902 return 0;
4903
4904 if ((*tls_maskp != NULL && **tls_maskp != 0)
4905 || sec == NULL
4906 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4907 return 1;
4908
4909 /* Look inside a TOC section too. */
4910 if (h != NULL)
4911 {
4912 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4913 off = h->root.u.def.value;
4914 }
4915 else
4916 off = sym->st_value;
4917 off += rel->r_addend;
4918 BFD_ASSERT (off % 8 == 0);
4919 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4920 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4921 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4922 return 0;
4923 if (toc_symndx != NULL)
4924 *toc_symndx = r_symndx;
4925 if ((h == NULL
4926 || ((h->root.type == bfd_link_hash_defined
4927 || h->root.type == bfd_link_hash_defweak)
4928 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4929 && (next_r == -1 || next_r == -2))
4930 return 1 - next_r;
4931 return 1;
4932}
4933
4934/* Adjust all global syms defined in opd sections. In gcc generated
4935 code these will already have been done, but I suppose we have to
4936 cater for all sorts of hand written assembly. */
4937
4938static bfd_boolean
4939adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
4940{
4941 struct ppc_link_hash_entry *eh;
4942 asection *sym_sec;
4943 long *opd_adjust;
4944
4945 if (h->root.type == bfd_link_hash_indirect)
4946 return TRUE;
4947
4948 if (h->root.type == bfd_link_hash_warning)
4949 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4950
4951 if (h->root.type != bfd_link_hash_defined
4952 && h->root.type != bfd_link_hash_defweak)
4953 return TRUE;
4954
4955 eh = (struct ppc_link_hash_entry *) h;
4956 if (eh->adjust_done)
4957 return TRUE;
4958
4959 sym_sec = eh->elf.root.u.def.section;
4960 opd_adjust = get_opd_info (sym_sec);
4961 if (opd_adjust != NULL)
4962 {
4963 long adjust = opd_adjust[eh->elf.root.u.def.value / 24];
4964 if (adjust == -1)
4965 {
4966 /* This entry has been deleted. */
4967 eh->elf.root.u.def.value = 0;
4968 eh->elf.root.u.def.section = &bfd_abs_section;
4969 }
4970 else
4971 eh->elf.root.u.def.value += adjust;
4972 eh->adjust_done = 1;
4973 }
4974 return TRUE;
4975}
4976
4977/* Remove unused Official Procedure Descriptor entries. Currently we
4978 only remove those associated with functions in discarded link-once
4979 sections, or weakly defined functions that have been overridden. It
4980 would be possible to remove many more entries for statically linked
4981 applications. */
4982
4983bfd_boolean
4984ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
4985{
4986 bfd *ibfd;
4987 bfd_boolean some_edited = FALSE;
4988
4989 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4990 {
4991 asection *sec;
4992 Elf_Internal_Rela *relstart, *rel, *relend;
4993 Elf_Internal_Shdr *symtab_hdr;
4994 Elf_Internal_Sym *local_syms;
4995 struct elf_link_hash_entry **sym_hashes;
4996 bfd_vma offset;
4997 bfd_size_type amt;
4998 long *opd_adjust;
4999 bfd_boolean need_edit;
5000
5001 sec = bfd_get_section_by_name (ibfd, ".opd");
5002 if (sec == NULL)
5003 continue;
5004
5005 amt = sec->size * sizeof (long) / 24;
5006 opd_adjust = get_opd_info (sec);
5007 if (opd_adjust == NULL)
5008 {
5009 /* Must be a ld -r link. ie. check_relocs hasn't been
5010 called. */
5011 opd_adjust = bfd_zalloc (obfd, amt);
5012 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
5013 }
5014 memset (opd_adjust, 0, amt);
5015
5016 if (sec->output_section == bfd_abs_section_ptr)
5017 continue;
5018
5019 /* Look through the section relocs. */
5020 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
5021 continue;
5022
5023 local_syms = NULL;
5024 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5025 sym_hashes = elf_sym_hashes (ibfd);
5026
5027 /* Read the relocations. */
5028 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5029 info->keep_memory);
5030 if (relstart == NULL)
5031 return FALSE;
5032
5033 /* First run through the relocs to check they are sane, and to
5034 determine whether we need to edit this opd section. */
5035 need_edit = FALSE;
5036 offset = 0;
5037 relend = relstart + sec->reloc_count;
5038 for (rel = relstart; rel < relend; )
5039 {
5040 enum elf_ppc64_reloc_type r_type;
5041 unsigned long r_symndx;
5042 asection *sym_sec;
5043 struct elf_link_hash_entry *h;
5044 Elf_Internal_Sym *sym;
5045
5046 /* .opd contains a regular array of 24 byte entries. We're
5047 only interested in the reloc pointing to a function entry
5048 point. */
5049 if (rel->r_offset != offset
5050 || rel + 1 >= relend
5051 || (rel + 1)->r_offset != offset + 8)
5052 {
5053 /* If someone messes with .opd alignment then after a
5054 "ld -r" we might have padding in the middle of .opd.
5055 Also, there's nothing to prevent someone putting
5056 something silly in .opd with the assembler. No .opd
5057 optimization for them! */
5058 (*_bfd_error_handler)
5059 (_("%s: .opd is not a regular array of opd entries"),
5060 bfd_archive_filename (ibfd));
5061 need_edit = FALSE;
5062 break;
5063 }
5064
5065 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5066 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5067 {
5068 (*_bfd_error_handler)
5069 (_("%s: unexpected reloc type %u in .opd section"),
5070 bfd_archive_filename (ibfd), r_type);
5071 need_edit = FALSE;
5072 break;
5073 }
5074
5075 r_symndx = ELF64_R_SYM (rel->r_info);
5076 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5077 r_symndx, ibfd))
5078 goto error_ret;
5079
5080 if (sym_sec == NULL || sym_sec->owner == NULL)
5081 {
5082 const char *sym_name;
5083 if (h != NULL)
5084 sym_name = h->root.root.string;
5085 else
5086 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5087
5088 (*_bfd_error_handler)
5089 (_("%s: undefined sym `%s' in .opd section"),
5090 bfd_archive_filename (ibfd),
5091 sym_name);
5092 need_edit = FALSE;
5093 break;
5094 }
5095
5096 /* opd entries are always for functions defined in the
5097 current input bfd. If the symbol isn't defined in the
5098 input bfd, then we won't be using the function in this
5099 bfd; It must be defined in a linkonce section in another
5100 bfd, or is weak. It's also possible that we are
5101 discarding the function due to a linker script /DISCARD/,
5102 which we test for via the output_section. */
5103 if (sym_sec->owner != ibfd
5104 || sym_sec->output_section == bfd_abs_section_ptr)
5105 need_edit = TRUE;
5106
5107 offset += 24;
5108 rel += 2;
5109 /* Allow for the possibility of a reloc on the third word. */
5110 if (rel < relend
5111 && rel->r_offset == offset - 8)
5112 rel += 1;
5113 }
5114
5115 if (need_edit)
5116 {
5117 Elf_Internal_Rela *write_rel;
5118 bfd_byte *rptr, *wptr;
5119 bfd_boolean skip;
5120
5121 /* This seems a waste of time as input .opd sections are all
5122 zeros as generated by gcc, but I suppose there's no reason
5123 this will always be so. We might start putting something in
5124 the third word of .opd entries. */
5125 if ((sec->flags & SEC_IN_MEMORY) == 0)
5126 {
5127 bfd_byte *loc;
5128 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
5129 {
5130 if (loc != NULL)
5131 free (loc);
5132 error_ret:
5133 if (local_syms != NULL
5134 && symtab_hdr->contents != (unsigned char *) local_syms)
5135 free (local_syms);
5136 if (elf_section_data (sec)->relocs != relstart)
5137 free (relstart);
5138 return FALSE;
5139 }
5140 sec->contents = loc;
5141 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
5142 }
5143
5144 elf_section_data (sec)->relocs = relstart;
5145
5146 wptr = sec->contents;
5147 rptr = sec->contents;
5148 write_rel = relstart;
5149 skip = FALSE;
5150 offset = 0;
5151 for (rel = relstart; rel < relend; rel++)
5152 {
5153 unsigned long r_symndx;
5154 asection *sym_sec;
5155 struct elf_link_hash_entry *h;
5156 Elf_Internal_Sym *sym;
5157
5158 r_symndx = ELF64_R_SYM (rel->r_info);
5159 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5160 r_symndx, ibfd))
5161 goto error_ret;
5162
5163 if (rel->r_offset == offset)
5164 {
5165 struct ppc_link_hash_entry *fdh = NULL;
5166 if (h != NULL
5167 && h->root.root.string[0] == '.')
5168 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
5169 ppc_hash_table (info));
5170
5171 skip = (sym_sec->owner != ibfd
5172 || sym_sec->output_section == bfd_abs_section_ptr);
5173 if (skip)
5174 {
5175 if (fdh != NULL && sym_sec->owner == ibfd)
5176 {
5177 /* Arrange for the function descriptor sym
5178 to be dropped. */
5179 fdh->elf.root.u.def.value = 0;
5180 fdh->elf.root.u.def.section = sym_sec;
5181 }
5182 opd_adjust[rel->r_offset / 24] = -1;
5183 }
5184 else
5185 {
5186 /* We'll be keeping this opd entry. */
5187
5188 if (fdh != NULL)
5189 {
5190 /* Redefine the function descriptor symbol to
5191 this location in the opd section. It is
5192 necessary to update the value here rather
5193 than using an array of adjustments as we do
5194 for local symbols, because various places
5195 in the generic ELF code use the value
5196 stored in u.def.value. */
5197 fdh->elf.root.u.def.value = wptr - sec->contents;
5198 fdh->adjust_done = 1;
5199 }
5200
5201 /* Local syms are a bit tricky. We could
5202 tweak them as they can be cached, but
5203 we'd need to look through the local syms
5204 for the function descriptor sym which we
5205 don't have at the moment. So keep an
5206 array of adjustments. */
5207 opd_adjust[rel->r_offset / 24] = wptr - rptr;
5208
5209 if (wptr != rptr)
5210 memcpy (wptr, rptr, 24);
5211 wptr += 24;
5212 }
5213 rptr += 24;
5214 offset += 24;
5215 }
5216
5217 if (skip)
5218 {
5219 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
5220 if (info->shared)
5221 {
5222 /* We won't be needing dynamic relocs here. */
5223 struct ppc_dyn_relocs **pp;
5224 struct ppc_dyn_relocs *p;
5225
5226 if (h != NULL)
5227 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5228 else if (sym_sec != NULL)
5229 pp = ((struct ppc_dyn_relocs **)
5230 &elf_section_data (sym_sec)->local_dynrel);
5231 else
5232 pp = ((struct ppc_dyn_relocs **)
5233 &elf_section_data (sec)->local_dynrel);
5234 while ((p = *pp) != NULL)
5235 {
5236 if (p->sec == sec)
5237 {
5238 p->count -= 1;
5239 if (p->count == 0)
5240 *pp = p->next;
5241 break;
5242 }
5243 pp = &p->next;
5244 }
5245 }
5246 }
5247 else
5248 {
5249 /* We need to adjust any reloc offsets to point to the
5250 new opd entries. While we're at it, we may as well
5251 remove redundant relocs. */
5252 rel->r_offset += wptr - rptr;
5253 if (write_rel != rel)
5254 memcpy (write_rel, rel, sizeof (*rel));
5255 ++write_rel;
5256 }
5257 }
5258
5259 sec->size = wptr - sec->contents;
5260 sec->reloc_count = write_rel - relstart;
5261 /* Fudge the size too, as this is used later in
5262 elf_bfd_final_link if we are emitting relocs. */
5263 elf_section_data (sec)->rel_hdr.sh_size
5264 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5265 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5266 some_edited = TRUE;
5267 }
5268 else if (elf_section_data (sec)->relocs != relstart)
5269 free (relstart);
5270
5271 if (local_syms != NULL
5272 && symtab_hdr->contents != (unsigned char *) local_syms)
5273 {
5274 if (!info->keep_memory)
5275 free (local_syms);
5276 else
5277 symtab_hdr->contents = (unsigned char *) local_syms;
5278 }
5279 }
5280
5281 if (some_edited)
5282 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
5283
5284 return TRUE;
5285}
5286
5287/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
5288
5289asection *
5290ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5291{
5292 struct ppc_link_hash_table *htab;
5293
5294 htab = ppc_hash_table (info);
5295 if (htab->tls_get_addr != NULL)
5296 {
5297 struct elf_link_hash_entry *h = htab->tls_get_addr;
5298
5299 while (h->root.type == bfd_link_hash_indirect
5300 || h->root.type == bfd_link_hash_warning)
5301 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5302
5303 htab->tls_get_addr = h;
5304 }
5305
5306 return _bfd_elf_tls_setup (obfd, info);
5307}
5308
5309/* Run through all the TLS relocs looking for optimization
5310 opportunities. The linker has been hacked (see ppc64elf.em) to do
5311 a preliminary section layout so that we know the TLS segment
5312 offsets. We can't optimize earlier because some optimizations need
5313 to know the tp offset, and we need to optimize before allocating
5314 dynamic relocations. */
5315
5316bfd_boolean
5317ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
5318{
5319 bfd *ibfd;
5320 asection *sec;
5321 struct ppc_link_hash_table *htab;
5322
5323 if (info->relocatable || info->shared)
5324 return TRUE;
5325
5326 htab = ppc_hash_table (info);
5327 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5328 {
5329 Elf_Internal_Sym *locsyms = NULL;
5330
5331 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5332 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5333 {
5334 Elf_Internal_Rela *relstart, *rel, *relend;
5335 int expecting_tls_get_addr;
5336
5337 /* Read the relocations. */
5338 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5339 info->keep_memory);
5340 if (relstart == NULL)
5341 return FALSE;
5342
5343 expecting_tls_get_addr = 0;
5344 relend = relstart + sec->reloc_count;
5345 for (rel = relstart; rel < relend; rel++)
5346 {
5347 enum elf_ppc64_reloc_type r_type;
5348 unsigned long r_symndx;
5349 struct elf_link_hash_entry *h;
5350 Elf_Internal_Sym *sym;
5351 asection *sym_sec;
5352 char *tls_mask;
5353 char tls_set, tls_clear, tls_type = 0;
5354 bfd_vma value;
5355 bfd_boolean ok_tprel, is_local;
5356
5357 r_symndx = ELF64_R_SYM (rel->r_info);
5358 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5359 r_symndx, ibfd))
5360 {
5361 err_free_rel:
5362 if (elf_section_data (sec)->relocs != relstart)
5363 free (relstart);
5364 if (locsyms != NULL
5365 && (elf_tdata (ibfd)->symtab_hdr.contents
5366 != (unsigned char *) locsyms))
5367 free (locsyms);
5368 return FALSE;
5369 }
5370
5371 if (h != NULL)
5372 {
5373 if (h->root.type != bfd_link_hash_defined
5374 && h->root.type != bfd_link_hash_defweak)
5375 continue;
5376 value = h->root.u.def.value;
5377 }
5378 else
5379 /* Symbols referenced by TLS relocs must be of type
5380 STT_TLS. So no need for .opd local sym adjust. */
5381 value = sym->st_value;
5382
5383 ok_tprel = FALSE;
5384 is_local = FALSE;
5385 if (h == NULL
5386 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5387 {
5388 is_local = TRUE;
5389 value += sym_sec->output_offset;
5390 value += sym_sec->output_section->vma;
5391 value -= htab->elf.tls_sec->vma;
5392 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5393 < (bfd_vma) 1 << 32);
5394 }
5395
5396 r_type = ELF64_R_TYPE (rel->r_info);
5397 switch (r_type)
5398 {
5399 case R_PPC64_GOT_TLSLD16:
5400 case R_PPC64_GOT_TLSLD16_LO:
5401 case R_PPC64_GOT_TLSLD16_HI:
5402 case R_PPC64_GOT_TLSLD16_HA:
5403 /* These relocs should never be against a symbol
5404 defined in a shared lib. Leave them alone if
5405 that turns out to be the case. */
5406 ppc64_tlsld_got (ibfd)->refcount -= 1;
5407 if (!is_local)
5408 continue;
5409
5410 /* LD -> LE */
5411 tls_set = 0;
5412 tls_clear = TLS_LD;
5413 tls_type = TLS_TLS | TLS_LD;
5414 expecting_tls_get_addr = 1;
5415 break;
5416
5417 case R_PPC64_GOT_TLSGD16:
5418 case R_PPC64_GOT_TLSGD16_LO:
5419 case R_PPC64_GOT_TLSGD16_HI:
5420 case R_PPC64_GOT_TLSGD16_HA:
5421 if (ok_tprel)
5422 /* GD -> LE */
5423 tls_set = 0;
5424 else
5425 /* GD -> IE */
5426 tls_set = TLS_TLS | TLS_TPRELGD;
5427 tls_clear = TLS_GD;
5428 tls_type = TLS_TLS | TLS_GD;
5429 expecting_tls_get_addr = 1;
5430 break;
5431
5432 case R_PPC64_GOT_TPREL16_DS:
5433 case R_PPC64_GOT_TPREL16_LO_DS:
5434 case R_PPC64_GOT_TPREL16_HI:
5435 case R_PPC64_GOT_TPREL16_HA:
5436 expecting_tls_get_addr = 0;
5437 if (ok_tprel)
5438 {
5439 /* IE -> LE */
5440 tls_set = 0;
5441 tls_clear = TLS_TPREL;
5442 tls_type = TLS_TLS | TLS_TPREL;
5443 break;
5444 }
5445 else
5446 continue;
5447
5448 case R_PPC64_REL14:
5449 case R_PPC64_REL14_BRTAKEN:
5450 case R_PPC64_REL14_BRNTAKEN:
5451 case R_PPC64_REL24:
5452 if (h != NULL
5453 && h == htab->tls_get_addr)
5454 {
5455 if (!expecting_tls_get_addr
5456 && rel != relstart
5457 && ((ELF64_R_TYPE (rel[-1].r_info)
5458 == R_PPC64_TOC16)
5459 || (ELF64_R_TYPE (rel[-1].r_info)
5460 == R_PPC64_TOC16_LO)))
5461 {
5462 /* Check for toc tls entries. */
5463 char *toc_tls;
5464 int retval;
5465
5466 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
5467 rel - 1, ibfd);
5468 if (retval == 0)
5469 goto err_free_rel;
5470 if (toc_tls != NULL)
5471 expecting_tls_get_addr = retval > 1;
5472 }
5473
5474 if (expecting_tls_get_addr)
5475 {
5476 struct plt_entry *ent;
5477 for (ent = h->plt.plist; ent; ent = ent->next)
5478 if (ent->addend == 0)
5479 {
5480 if (ent->plt.refcount > 0)
5481 ent->plt.refcount -= 1;
5482 break;
5483 }
5484 }
5485 }
5486 expecting_tls_get_addr = 0;
5487 continue;
5488
5489 case R_PPC64_TPREL64:
5490 expecting_tls_get_addr = 0;
5491 if (ok_tprel)
5492 {
5493 /* IE -> LE */
5494 tls_set = TLS_EXPLICIT;
5495 tls_clear = TLS_TPREL;
5496 break;
5497 }
5498 else
5499 continue;
5500
5501 case R_PPC64_DTPMOD64:
5502 expecting_tls_get_addr = 0;
5503 if (rel + 1 < relend
5504 && (rel[1].r_info
5505 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5506 && rel[1].r_offset == rel->r_offset + 8)
5507 {
5508 if (ok_tprel)
5509 /* GD -> LE */
5510 tls_set = TLS_EXPLICIT | TLS_GD;
5511 else
5512 /* GD -> IE */
5513 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5514 tls_clear = TLS_GD;
5515 }
5516 else
5517 {
5518 if (!is_local)
5519 continue;
5520
5521 /* LD -> LE */
5522 tls_set = TLS_EXPLICIT;
5523 tls_clear = TLS_LD;
5524 }
5525 break;
5526
5527 default:
5528 expecting_tls_get_addr = 0;
5529 continue;
5530 }
5531
5532 if ((tls_set & TLS_EXPLICIT) == 0)
5533 {
5534 struct got_entry *ent;
5535
5536 /* Adjust got entry for this reloc. */
5537 if (h != NULL)
5538 ent = h->got.glist;
5539 else
5540 ent = elf_local_got_ents (ibfd)[r_symndx];
5541
5542 for (; ent != NULL; ent = ent->next)
5543 if (ent->addend == rel->r_addend
5544 && ent->owner == ibfd
5545 && ent->tls_type == tls_type)
5546 break;
5547 if (ent == NULL)
5548 abort ();
5549
5550 if (tls_set == 0)
5551 {
5552 /* We managed to get rid of a got entry. */
5553 if (ent->got.refcount > 0)
5554 ent->got.refcount -= 1;
5555 }
5556 }
5557 else if (h != NULL)
5558 {
5559 struct ppc_link_hash_entry * eh;
5560 struct ppc_dyn_relocs **pp;
5561 struct ppc_dyn_relocs *p;
5562
5563 /* Adjust dynamic relocs. */
5564 eh = (struct ppc_link_hash_entry *) h;
5565 for (pp = &eh->dyn_relocs;
5566 (p = *pp) != NULL;
5567 pp = &p->next)
5568 if (p->sec == sec)
5569 {
5570 /* If we got rid of a DTPMOD/DTPREL reloc
5571 pair then we'll lose one or two dyn
5572 relocs. */
5573 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5574 p->count -= 1;
5575 p->count -= 1;
5576 if (p->count == 0)
5577 *pp = p->next;
5578 break;
5579 }
5580 }
5581
5582 *tls_mask |= tls_set;
5583 *tls_mask &= ~tls_clear;
5584 }
5585
5586 if (elf_section_data (sec)->relocs != relstart)
5587 free (relstart);
5588 }
5589
5590 if (locsyms != NULL
5591 && (elf_tdata (ibfd)->symtab_hdr.contents
5592 != (unsigned char *) locsyms))
5593 {
5594 if (!info->keep_memory)
5595 free (locsyms);
5596 else
5597 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5598 }
5599 }
5600 return TRUE;
5601}
5602
5603/* Allocate space in .plt, .got and associated reloc sections for
5604 dynamic relocs. */
5605
5606static bfd_boolean
5607allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5608{
5609 struct bfd_link_info *info;
5610 struct ppc_link_hash_table *htab;
5611 asection *s;
5612 struct ppc_link_hash_entry *eh;
5613 struct ppc_dyn_relocs *p;
5614 struct got_entry *gent;
5615
5616 if (h->root.type == bfd_link_hash_indirect)
5617 return TRUE;
5618
5619 if (h->root.type == bfd_link_hash_warning)
5620 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5621
5622 info = (struct bfd_link_info *) inf;
5623 htab = ppc_hash_table (info);
5624
5625 if (htab->elf.dynamic_sections_created
5626 && h->dynindx != -1
5627 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5628 {
5629 struct plt_entry *pent;
5630 bfd_boolean doneone = FALSE;
5631 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5632 if (pent->plt.refcount > 0)
5633 {
5634 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5635
5636 /* If this is the first .plt entry, make room for the special
5637 first entry. */
5638 s = htab->plt;
5639 if (s->size == 0)
5640 s->size += PLT_INITIAL_ENTRY_SIZE;
5641
5642 pent->plt.offset = s->size;
5643
5644 /* Make room for this entry. */
5645 s->size += PLT_ENTRY_SIZE;
5646
5647 /* Make room for the .glink code. */
5648 s = htab->glink;
5649 if (s->size == 0)
5650 s->size += GLINK_CALL_STUB_SIZE;
5651 /* We need bigger stubs past index 32767. */
5652 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5653 s->size += 4;
5654 s->size += 2*4;
5655
5656 /* We also need to make an entry in the .rela.plt section. */
5657 s = htab->relplt;
5658 s->size += sizeof (Elf64_External_Rela);
5659 doneone = TRUE;
5660 }
5661 else
5662 pent->plt.offset = (bfd_vma) -1;
5663 if (!doneone)
5664 {
5665 h->plt.plist = NULL;
5666 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5667 }
5668 }
5669 else
5670 {
5671 h->plt.plist = NULL;
5672 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5673 }
5674
5675 eh = (struct ppc_link_hash_entry *) h;
5676 /* Run through the TLS GD got entries first if we're changing them
5677 to TPREL. */
5678 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5679 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5680 if (gent->got.refcount > 0
5681 && (gent->tls_type & TLS_GD) != 0)
5682 {
5683 /* This was a GD entry that has been converted to TPREL. If
5684 there happens to be a TPREL entry we can use that one. */
5685 struct got_entry *ent;
5686 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5687 if (ent->got.refcount > 0
5688 && (ent->tls_type & TLS_TPREL) != 0
5689 && ent->addend == gent->addend
5690 && ent->owner == gent->owner)
5691 {
5692 gent->got.refcount = 0;
5693 break;
5694 }
5695
5696 /* If not, then we'll be using our own TPREL entry. */
5697 if (gent->got.refcount != 0)
5698 gent->tls_type = TLS_TLS | TLS_TPREL;
5699 }
5700
5701 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5702 if (gent->got.refcount > 0)
5703 {
5704 bfd_boolean dyn;
5705
5706 /* Make sure this symbol is output as a dynamic symbol.
5707 Undefined weak syms won't yet be marked as dynamic,
5708 nor will all TLS symbols. */
5709 if (h->dynindx == -1
5710 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5711 {
5712 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5713 return FALSE;
5714 }
5715
5716 if ((gent->tls_type & TLS_LD) != 0
5717 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5718 {
5719 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
5720 continue;
5721 }
5722
5723 s = ppc64_elf_tdata (gent->owner)->got;
5724 gent->got.offset = s->size;
5725 s->size
5726 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5727 dyn = htab->elf.dynamic_sections_created;
5728 if ((info->shared
5729 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5730 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5731 || h->root.type != bfd_link_hash_undefweak))
5732 ppc64_elf_tdata (gent->owner)->relgot->size
5733 += (gent->tls_type & eh->tls_mask & TLS_GD
5734 ? 2 * sizeof (Elf64_External_Rela)
5735 : sizeof (Elf64_External_Rela));
5736 }
5737 else
5738 gent->got.offset = (bfd_vma) -1;
5739
5740 if (eh->dyn_relocs == NULL)
5741 return TRUE;
5742
5743 /* In the shared -Bsymbolic case, discard space allocated for
5744 dynamic pc-relative relocs against symbols which turn out to be
5745 defined in regular objects. For the normal shared case, discard
5746 space for relocs that have become local due to symbol visibility
5747 changes. */
5748
5749 if (info->shared)
5750 {
5751 /* Relocs that use pc_count are those that appear on a call insn,
5752 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5753 generated via assembly. We want calls to protected symbols to
5754 resolve directly to the function rather than going via the plt.
5755 If people want function pointer comparisons to work as expected
5756 then they should avoid writing weird assembly. */
5757 if (SYMBOL_CALLS_LOCAL (info, h))
5758 {
5759 struct ppc_dyn_relocs **pp;
5760
5761 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5762 {
5763 p->count -= p->pc_count;
5764 p->pc_count = 0;
5765 if (p->count == 0)
5766 *pp = p->next;
5767 else
5768 pp = &p->next;
5769 }
5770 }
5771
5772 /* Also discard relocs on undefined weak syms with non-default
5773 visibility. */
5774 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5775 && h->root.type == bfd_link_hash_undefweak)
5776 eh->dyn_relocs = NULL;
5777 }
5778 else if (ELIMINATE_COPY_RELOCS)
5779 {
5780 /* For the non-shared case, discard space for relocs against
5781 symbols which turn out to need copy relocs or are not
5782 dynamic. */
5783
5784 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5785 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5786 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5787 {
5788 /* Make sure this symbol is output as a dynamic symbol.
5789 Undefined weak syms won't yet be marked as dynamic. */
5790 if (h->dynindx == -1
5791 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5792 {
5793 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5794 return FALSE;
5795 }
5796
5797 /* If that succeeded, we know we'll be keeping all the
5798 relocs. */
5799 if (h->dynindx != -1)
5800 goto keep;
5801 }
5802
5803 eh->dyn_relocs = NULL;
5804
5805 keep: ;
5806 }
5807
5808 /* Finally, allocate space. */
5809 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5810 {
5811 asection *sreloc = elf_section_data (p->sec)->sreloc;
5812 sreloc->size += p->count * sizeof (Elf64_External_Rela);
5813 }
5814
5815 return TRUE;
5816}
5817
5818/* Find any dynamic relocs that apply to read-only sections. */
5819
5820static bfd_boolean
5821readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5822{
5823 struct ppc_link_hash_entry *eh;
5824 struct ppc_dyn_relocs *p;
5825
5826 if (h->root.type == bfd_link_hash_warning)
5827 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5828
5829 eh = (struct ppc_link_hash_entry *) h;
5830 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5831 {
5832 asection *s = p->sec->output_section;
5833
5834 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5835 {
5836 struct bfd_link_info *info = inf;
5837
5838 info->flags |= DF_TEXTREL;
5839
5840 /* Not an error, just cut short the traversal. */
5841 return FALSE;
5842 }
5843 }
5844 return TRUE;
5845}
5846
5847/* Set the sizes of the dynamic sections. */
5848
5849static bfd_boolean
5850ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5851 struct bfd_link_info *info)
5852{
5853 struct ppc_link_hash_table *htab;
5854 bfd *dynobj;
5855 asection *s;
5856 bfd_boolean relocs;
5857 bfd *ibfd;
5858
5859 htab = ppc_hash_table (info);
5860 dynobj = htab->elf.dynobj;
5861 if (dynobj == NULL)
5862 abort ();
5863
5864 if (htab->elf.dynamic_sections_created)
5865 {
5866 /* Set the contents of the .interp section to the interpreter. */
5867 if (info->executable)
5868 {
5869 s = bfd_get_section_by_name (dynobj, ".interp");
5870 if (s == NULL)
5871 abort ();
5872 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5873 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5874 }
5875 }
5876
5877 /* Set up .got offsets for local syms, and space for local dynamic
5878 relocs. */
5879 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5880 {
5881 struct got_entry **lgot_ents;
5882 struct got_entry **end_lgot_ents;
5883 char *lgot_masks;
5884 bfd_size_type locsymcount;
5885 Elf_Internal_Shdr *symtab_hdr;
5886 asection *srel;
5887
5888 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5889 continue;
5890
5891 if (ppc64_tlsld_got (ibfd)->refcount > 0)
5892 {
5893 s = ppc64_elf_tdata (ibfd)->got;
5894 ppc64_tlsld_got (ibfd)->offset = s->size;
5895 s->size += 16;
5896 if (info->shared)
5897 {
5898 srel = ppc64_elf_tdata (ibfd)->relgot;
5899 srel->size += sizeof (Elf64_External_Rela);
5900 }
5901 }
5902 else
5903 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
5904
5905 for (s = ibfd->sections; s != NULL; s = s->next)
5906 {
5907 struct ppc_dyn_relocs *p;
5908
5909 for (p = *((struct ppc_dyn_relocs **)
5910 &elf_section_data (s)->local_dynrel);
5911 p != NULL;
5912 p = p->next)
5913 {
5914 if (!bfd_is_abs_section (p->sec)
5915 && bfd_is_abs_section (p->sec->output_section))
5916 {
5917 /* Input section has been discarded, either because
5918 it is a copy of a linkonce section or due to
5919 linker script /DISCARD/, so we'll be discarding
5920 the relocs too. */
5921 }
5922 else if (p->count != 0)
5923 {
5924 srel = elf_section_data (p->sec)->sreloc;
5925 srel->size += p->count * sizeof (Elf64_External_Rela);
5926 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5927 info->flags |= DF_TEXTREL;
5928 }
5929 }
5930 }
5931
5932 lgot_ents = elf_local_got_ents (ibfd);
5933 if (!lgot_ents)
5934 continue;
5935
5936 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5937 locsymcount = symtab_hdr->sh_info;
5938 end_lgot_ents = lgot_ents + locsymcount;
5939 lgot_masks = (char *) end_lgot_ents;
5940 s = ppc64_elf_tdata (ibfd)->got;
5941 srel = ppc64_elf_tdata (ibfd)->relgot;
5942 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5943 {
5944 struct got_entry *ent;
5945
5946 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5947 if (ent->got.refcount > 0)
5948 {
5949 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5950 {
5951 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
5952 {
5953 ppc64_tlsld_got (ibfd)->offset = s->size;
5954 s->size += 16;
5955 if (info->shared)
5956 srel->size += sizeof (Elf64_External_Rela);
5957 }
5958 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
5959 }
5960 else
5961 {
5962 ent->got.offset = s->size;
5963 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5964 {
5965 s->size += 16;
5966 if (info->shared)
5967 srel->size += 2 * sizeof (Elf64_External_Rela);
5968 }
5969 else
5970 {
5971 s->size += 8;
5972 if (info->shared)
5973 srel->size += sizeof (Elf64_External_Rela);
5974 }
5975 }
5976 }
5977 else
5978 ent->got.offset = (bfd_vma) -1;
5979 }
5980 }
5981
5982 /* Allocate global sym .plt and .got entries, and space for global
5983 sym dynamic relocs. */
5984 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
5985
5986 /* We now have determined the sizes of the various dynamic sections.
5987 Allocate memory for them. */
5988 relocs = FALSE;
5989 for (s = dynobj->sections; s != NULL; s = s->next)
5990 {
5991 if ((s->flags & SEC_LINKER_CREATED) == 0)
5992 continue;
5993
5994 if (s == htab->brlt || s == htab->relbrlt)
5995 /* These haven't been allocated yet; don't strip. */
5996 continue;
5997 else if (s == htab->got
5998 || s == htab->plt
5999 || s == htab->glink)
6000 {
6001 /* Strip this section if we don't need it; see the
6002 comment below. */
6003 }
6004 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
6005 {
6006 if (s->size == 0)
6007 {
6008 /* If we don't need this section, strip it from the
6009 output file. This is mostly to handle .rela.bss and
6010 .rela.plt. We must create both sections in
6011 create_dynamic_sections, because they must be created
6012 before the linker maps input sections to output
6013 sections. The linker does that before
6014 adjust_dynamic_symbol is called, and it is that
6015 function which decides whether anything needs to go
6016 into these sections. */
6017 }
6018 else
6019 {
6020 if (s != htab->relplt)
6021 relocs = TRUE;
6022
6023 /* We use the reloc_count field as a counter if we need
6024 to copy relocs into the output file. */
6025 s->reloc_count = 0;
6026 }
6027 }
6028 else
6029 {
6030 /* It's not one of our sections, so don't allocate space. */
6031 continue;
6032 }
6033
6034 if (s->size == 0)
6035 {
6036 _bfd_strip_section_from_output (info, s);
6037 continue;
6038 }
6039
6040 /* .plt is in the bss section. We don't initialise it. */
6041 if (s == htab->plt)
6042 continue;
6043
6044 /* Allocate memory for the section contents. We use bfd_zalloc
6045 here in case unused entries are not reclaimed before the
6046 section's contents are written out. This should not happen,
6047 but this way if it does we get a R_PPC64_NONE reloc in .rela
6048 sections instead of garbage.
6049 We also rely on the section contents being zero when writing
6050 the GOT. */
6051 s->contents = bfd_zalloc (dynobj, s->size);
6052 if (s->contents == NULL)
6053 return FALSE;
6054 }
6055
6056 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6057 {
6058 s = ppc64_elf_tdata (ibfd)->got;
6059 if (s != NULL && s != htab->got)
6060 {
6061 if (s->size == 0)
6062 _bfd_strip_section_from_output (info, s);
6063 else
6064 {
6065 s->contents = bfd_zalloc (ibfd, s->size);
6066 if (s->contents == NULL)
6067 return FALSE;
6068 }
6069 }
6070 s = ppc64_elf_tdata (ibfd)->relgot;
6071 if (s != NULL)
6072 {
6073 if (s->size == 0)
6074 _bfd_strip_section_from_output (info, s);
6075 else
6076 {
6077 s->contents = bfd_zalloc (ibfd, s->size);
6078 if (s->contents == NULL)
6079 return FALSE;
6080 relocs = TRUE;
6081 s->reloc_count = 0;
6082 }
6083 }
6084 }
6085
6086 if (htab->elf.dynamic_sections_created)
6087 {
6088 /* Add some entries to the .dynamic section. We fill in the
6089 values later, in ppc64_elf_finish_dynamic_sections, but we
6090 must add the entries now so that we get the correct size for
6091 the .dynamic section. The DT_DEBUG entry is filled in by the
6092 dynamic linker and used by the debugger. */
6093#define add_dynamic_entry(TAG, VAL) \
6094 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
6095
6096 if (info->executable)
6097 {
6098 if (!add_dynamic_entry (DT_DEBUG, 0))
6099 return FALSE;
6100 }
6101
6102 if (htab->plt != NULL && htab->plt->size != 0)
6103 {
6104 if (!add_dynamic_entry (DT_PLTGOT, 0)
6105 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6106 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6107 || !add_dynamic_entry (DT_JMPREL, 0)
6108 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
6109 return FALSE;
6110 }
6111
6112 if (NO_OPD_RELOCS)
6113 {
6114 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
6115 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
6116 return FALSE;
6117 }
6118
6119 if (relocs)
6120 {
6121 if (!add_dynamic_entry (DT_RELA, 0)
6122 || !add_dynamic_entry (DT_RELASZ, 0)
6123 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
6124 return FALSE;
6125
6126 /* If any dynamic relocs apply to a read-only section,
6127 then we need a DT_TEXTREL entry. */
6128 if ((info->flags & DF_TEXTREL) == 0)
6129 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
6130
6131 if ((info->flags & DF_TEXTREL) != 0)
6132 {
6133 if (!add_dynamic_entry (DT_TEXTREL, 0))
6134 return FALSE;
6135 }
6136 }
6137 }
6138#undef add_dynamic_entry
6139
6140 return TRUE;
6141}
6142
6143/* Determine the type of stub needed, if any, for a call. */
6144
6145static inline enum ppc_stub_type
6146ppc_type_of_stub (asection *input_sec,
6147 const Elf_Internal_Rela *rel,
6148 struct ppc_link_hash_entry **hash,
6149 bfd_vma destination)
6150{
6151 struct ppc_link_hash_entry *h = *hash;
6152 bfd_vma location;
6153 bfd_vma branch_offset;
6154 bfd_vma max_branch_offset;
6155 enum elf_ppc64_reloc_type r_type;
6156
6157 if (h != NULL)
6158 {
6159 if (h->oh != NULL
6160 && h->oh->elf.dynindx != -1)
6161 {
6162 struct plt_entry *ent;
6163 for (ent = h->oh->elf.plt.plist; ent != NULL; ent = ent->next)
6164 if (ent->addend == rel->r_addend
6165 && ent->plt.offset != (bfd_vma) -1)
6166 {
6167 *hash = h->oh;
6168 return ppc_stub_plt_call;
6169 }
6170 }
6171
6172 if (!(h->elf.root.type == bfd_link_hash_defined
6173 || h->elf.root.type == bfd_link_hash_defweak)
6174 || h->elf.root.u.def.section->output_section == NULL)
6175 return ppc_stub_none;
6176 }
6177
6178 /* Determine where the call point is. */
6179 location = (input_sec->output_offset
6180 + input_sec->output_section->vma
6181 + rel->r_offset);
6182
6183 branch_offset = destination - location;
6184 r_type = ELF64_R_TYPE (rel->r_info);
6185
6186 /* Determine if a long branch stub is needed. */
6187 max_branch_offset = 1 << 25;
6188 if (r_type != R_PPC64_REL24)
6189 max_branch_offset = 1 << 15;
6190
6191 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6192 /* We need a stub. Figure out whether a long_branch or plt_branch
6193 is needed later. */
6194 return ppc_stub_long_branch;
6195
6196 return ppc_stub_none;
6197}
6198
6199/* Build a .plt call stub. */
6200
6201static inline bfd_byte *
6202build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
6203{
6204#define PPC_LO(v) ((v) & 0xffff)
6205#define PPC_HI(v) (((v) >> 16) & 0xffff)
6206#define PPC_HA(v) PPC_HI ((v) + 0x8000)
6207
6208 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6209 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6210 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6211 if (PPC_HA (offset + 8) != PPC_HA (offset))
6212 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6213 offset += 8;
6214 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6215 if (PPC_HA (offset + 8) != PPC_HA (offset))
6216 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6217 offset += 8;
6218 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6219 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6220 bfd_put_32 (obfd, BCTR, p), p += 4;
6221 return p;
6222}
6223
6224static bfd_boolean
6225ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6226{
6227 struct ppc_stub_hash_entry *stub_entry;
6228 struct ppc_branch_hash_entry *br_entry;
6229 struct bfd_link_info *info;
6230 struct ppc_link_hash_table *htab;
6231 bfd_byte *loc;
6232 bfd_byte *p;
6233 unsigned int indx;
6234 struct plt_entry *ent;
6235 bfd_vma off;
6236 int size;
6237
6238 /* Massage our args to the form they really have. */
6239 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6240 info = in_arg;
6241
6242 htab = ppc_hash_table (info);
6243
6244 /* Make a note of the offset within the stubs for this entry. */
6245 stub_entry->stub_offset = stub_entry->stub_sec->size;
6246 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
6247
6248 htab->stub_count[stub_entry->stub_type - 1] += 1;
6249 switch (stub_entry->stub_type)
6250 {
6251 case ppc_stub_long_branch:
6252 case ppc_stub_long_branch_r2off:
6253 /* Branches are relative. This is where we are going to. */
6254 off = (stub_entry->target_value
6255 + stub_entry->target_section->output_offset
6256 + stub_entry->target_section->output_section->vma);
6257
6258 /* And this is where we are coming from. */
6259 off -= (stub_entry->stub_offset
6260 + stub_entry->stub_sec->output_offset
6261 + stub_entry->stub_sec->output_section->vma);
6262
6263 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
6264 size = 4;
6265 else
6266 {
6267 bfd_vma r2off;
6268
6269 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6270 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6271 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6272 loc += 4;
6273 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6274 loc += 4;
6275 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6276 loc += 4;
6277 off -= 12;
6278 size = 16;
6279 }
6280 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
6281
6282 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6283 break;
6284
6285 case ppc_stub_plt_branch:
6286 case ppc_stub_plt_branch_r2off:
6287 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6288 stub_entry->root.string + 9,
6289 FALSE, FALSE);
6290 if (br_entry == NULL)
6291 {
6292 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6293 stub_entry->root.string + 9);
6294 htab->stub_error = TRUE;
6295 return FALSE;
6296 }
6297
6298 off = (stub_entry->target_value
6299 + stub_entry->target_section->output_offset
6300 + stub_entry->target_section->output_section->vma);
6301
6302 bfd_put_64 (htab->brlt->owner, off,
6303 htab->brlt->contents + br_entry->offset);
6304
6305 if (info->shared)
6306 {
6307 /* Create a reloc for the branch lookup table entry. */
6308 Elf_Internal_Rela rela;
6309 bfd_byte *rl;
6310
6311 rela.r_offset = (br_entry->offset
6312 + htab->brlt->output_offset
6313 + htab->brlt->output_section->vma);
6314 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6315 rela.r_addend = off;
6316
6317 rl = htab->relbrlt->contents;
6318 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6319 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
6320 }
6321
6322 off = (br_entry->offset
6323 + htab->brlt->output_offset
6324 + htab->brlt->output_section->vma
6325 - elf_gp (htab->brlt->output_section->owner)
6326 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6327
6328 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6329 {
6330 (*_bfd_error_handler)
6331 (_("linkage table error against `%s'"),
6332 stub_entry->root.string);
6333 bfd_set_error (bfd_error_bad_value);
6334 htab->stub_error = TRUE;
6335 return FALSE;
6336 }
6337
6338 indx = off;
6339 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
6340 {
6341 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6342 loc += 4;
6343 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6344 size = 16;
6345 }
6346 else
6347 {
6348 bfd_vma r2off;
6349
6350 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6351 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6352 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6353 loc += 4;
6354 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6355 loc += 4;
6356 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6357 loc += 4;
6358 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6359 loc += 4;
6360 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6361 size = 28;
6362 }
6363 loc += 4;
6364 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
6365 loc += 4;
6366 bfd_put_32 (htab->stub_bfd, BCTR, loc);
6367 break;
6368
6369 case ppc_stub_plt_call:
6370 /* Do the best we can for shared libraries built without
6371 exporting ".foo" for each "foo". This can happen when symbol
6372 versioning scripts strip all bar a subset of symbols. */
6373 if (stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
6374 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
6375 {
6376 /* Point the symbol at the stub. There may be multiple stubs,
6377 we don't really care; The main thing is to make this sym
6378 defined somewhere. Maybe defining the symbol in the stub
6379 section is a silly idea. If we didn't do this, htab->top_id
6380 could disappear. */
6381 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
6382 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
6383 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
6384 }
6385
6386 /* Now build the stub. */
6387 off = (bfd_vma) -1;
6388 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6389 if (ent->addend == stub_entry->addend)
6390 {
6391 off = ent->plt.offset;
6392 break;
6393 }
6394 if (off >= (bfd_vma) -2)
6395 abort ();
6396
6397 off &= ~ (bfd_vma) 1;
6398 off += (htab->plt->output_offset
6399 + htab->plt->output_section->vma
6400 - elf_gp (htab->plt->output_section->owner)
6401 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6402
6403 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6404 {
6405 (*_bfd_error_handler)
6406 (_("linkage table error against `%s'"),
6407 stub_entry->h->elf.root.root.string);
6408 bfd_set_error (bfd_error_bad_value);
6409 htab->stub_error = TRUE;
6410 return FALSE;
6411 }
6412
6413 p = build_plt_stub (htab->stub_bfd, loc, off);
6414 size = p - loc;
6415 break;
6416
6417 default:
6418 BFD_FAIL ();
6419 return FALSE;
6420 }
6421
6422 stub_entry->stub_sec->size += size;
6423
6424 if (htab->emit_stub_syms
6425 && !(stub_entry->stub_type == ppc_stub_plt_call
6426 && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined
6427 && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec
6428 && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset))
6429 {
6430 struct elf_link_hash_entry *h;
6431 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
6432 TRUE, FALSE, FALSE);
6433 if (h == NULL)
6434 return FALSE;
6435 if (h->root.type == bfd_link_hash_new)
6436 {
6437 h->root.type = bfd_link_hash_defined;
6438 h->root.u.def.section = stub_entry->stub_sec;
6439 h->root.u.def.value = stub_entry->stub_offset;
6440 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
6441 | ELF_LINK_HASH_DEF_REGULAR
6442 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6443 | ELF_LINK_FORCED_LOCAL);
6444 }
6445 }
6446
6447 return TRUE;
6448}
6449
6450/* As above, but don't actually build the stub. Just bump offset so
6451 we know stub section sizes, and select plt_branch stubs where
6452 long_branch stubs won't do. */
6453
6454static bfd_boolean
6455ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6456{
6457 struct ppc_stub_hash_entry *stub_entry;
6458 struct bfd_link_info *info;
6459 struct ppc_link_hash_table *htab;
6460 bfd_vma off;
6461 int size;
6462
6463 /* Massage our args to the form they really have. */
6464 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6465 info = in_arg;
6466
6467 htab = ppc_hash_table (info);
6468
6469 if (stub_entry->stub_type == ppc_stub_plt_call)
6470 {
6471 struct plt_entry *ent;
6472 off = (bfd_vma) -1;
6473 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6474 if (ent->addend == stub_entry->addend)
6475 {
6476 off = ent->plt.offset & ~(bfd_vma) 1;
6477 break;
6478 }
6479 if (off >= (bfd_vma) -2)
6480 abort ();
6481 off += (htab->plt->output_offset
6482 + htab->plt->output_section->vma
6483 - elf_gp (htab->plt->output_section->owner)
6484 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6485
6486 size = PLT_CALL_STUB_SIZE;
6487 if (PPC_HA (off + 16) != PPC_HA (off))
6488 size += 4;
6489 }
6490 else
6491 {
6492 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6493 variants. */
6494 off = (stub_entry->target_value
6495 + stub_entry->target_section->output_offset
6496 + stub_entry->target_section->output_section->vma);
6497 off -= (stub_entry->stub_sec->size
6498 + stub_entry->stub_sec->output_offset
6499 + stub_entry->stub_sec->output_section->vma);
6500
6501 /* Reset the stub type from the plt variant in case we now
6502 can reach with a shorter stub. */
6503 if (stub_entry->stub_type >= ppc_stub_plt_branch)
6504 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
6505
6506 size = 4;
6507 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
6508 {
6509 off -= 12;
6510 size = 16;
6511 }
6512
6513 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6514 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6515 {
6516 struct ppc_branch_hash_entry *br_entry;
6517
6518 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6519 stub_entry->root.string + 9,
6520 TRUE, FALSE);
6521 if (br_entry == NULL)
6522 {
6523 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6524 stub_entry->root.string + 9);
6525 htab->stub_error = TRUE;
6526 return FALSE;
6527 }
6528
6529 if (br_entry->iter != htab->stub_iteration)
6530 {
6531 br_entry->iter = htab->stub_iteration;
6532 br_entry->offset = htab->brlt->size;
6533 htab->brlt->size += 8;
6534
6535 if (info->shared)
6536 htab->relbrlt->size += sizeof (Elf64_External_Rela);
6537 }
6538
6539 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
6540 size = 16;
6541 if (stub_entry->stub_type != ppc_stub_plt_branch)
6542 size = 28;
6543 }
6544 }
6545
6546 stub_entry->stub_sec->size += size;
6547 return TRUE;
6548}
6549
6550/* Set up various things so that we can make a list of input sections
6551 for each output section included in the link. Returns -1 on error,
6552 0 when no stubs will be needed, and 1 on success. */
6553
6554int
6555ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
6556{
6557 bfd *input_bfd;
6558 int top_id, top_index, id;
6559 asection *section;
6560 asection **input_list;
6561 bfd_size_type amt;
6562 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6563
6564 if (htab->brlt == NULL)
6565 return 0;
6566
6567 /* Find the top input section id. */
6568 for (input_bfd = info->input_bfds, top_id = 3;
6569 input_bfd != NULL;
6570 input_bfd = input_bfd->link_next)
6571 {
6572 for (section = input_bfd->sections;
6573 section != NULL;
6574 section = section->next)
6575 {
6576 if (top_id < section->id)
6577 top_id = section->id;
6578 }
6579 }
6580
6581 htab->top_id = top_id;
6582 amt = sizeof (struct map_stub) * (top_id + 1);
6583 htab->stub_group = bfd_zmalloc (amt);
6584 if (htab->stub_group == NULL)
6585 return -1;
6586
6587 /* Set toc_off for com, und, abs and ind sections. */
6588 for (id = 0; id < 3; id++)
6589 htab->stub_group[id].toc_off = TOC_BASE_OFF;
6590
6591 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
6592
6593 /* We can't use output_bfd->section_count here to find the top output
6594 section index as some sections may have been removed, and
6595 _bfd_strip_section_from_output doesn't renumber the indices. */
6596 for (section = output_bfd->sections, top_index = 0;
6597 section != NULL;
6598 section = section->next)
6599 {
6600 if (top_index < section->index)
6601 top_index = section->index;
6602 }
6603
6604 htab->top_index = top_index;
6605 amt = sizeof (asection *) * (top_index + 1);
6606 input_list = bfd_zmalloc (amt);
6607 htab->input_list = input_list;
6608 if (input_list == NULL)
6609 return -1;
6610
6611 return 1;
6612}
6613
6614/* The linker repeatedly calls this function for each TOC input section
6615 and linker generated GOT section. Group input bfds such that the toc
6616 within a group is less than 64k in size. Will break with cute linker
6617 scripts that play games with dot in the output toc section. */
6618
6619void
6620ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
6621{
6622 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6623
6624 if (!htab->no_multi_toc)
6625 {
6626 bfd_vma addr = isec->output_offset + isec->output_section->vma;
6627 bfd_vma off = addr - htab->toc_curr;
6628 if (off + isec->size > 0x10000)
6629 {
6630 htab->toc_curr = addr;
6631 htab->multi_toc_needed = 1;
6632 }
6633 elf_gp (isec->owner) = (htab->toc_curr
6634 - elf_gp (isec->output_section->owner)
6635 + TOC_BASE_OFF);
6636 }
6637}
6638
6639/* Called after the last call to the above function. */
6640
6641void
6642ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
6643 struct bfd_link_info *info)
6644{
6645 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6646
6647 /* toc_curr tracks the TOC offset used for code sections below in
6648 ppc64_elf_next_input_section. Start off at 0x8000. */
6649 htab->toc_curr = TOC_BASE_OFF;
6650}
6651
6652/* No toc references were found in ISEC. If the code in ISEC makes no
6653 calls, then there's no need to use toc adjusting stubs when branching
6654 into ISEC. Actually, indirect calls from ISEC are OK as they will
6655 load r2. */
6656
6657static int
6658toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
6659{
6660 bfd_byte *contents;
6661 bfd_size_type i;
6662 int ret;
6663 int branch_ok;
6664
6665 /* We know none of our code bearing sections will need toc stubs. */
6666 if ((isec->flags & SEC_LINKER_CREATED) != 0)
6667 return 0;
6668
6669 if (isec->size == 0)
6670 return 0;
6671
6672 /* Hack for linux kernel. .fixup contains branches, but only back to
6673 the function that hit an exception. */
6674 branch_ok = strcmp (isec->name, ".fixup") == 0;
6675
6676 contents = elf_section_data (isec)->this_hdr.contents;
6677 if (contents == NULL)
6678 {
6679 if (!bfd_malloc_and_get_section (isec->owner, isec, &contents))
6680 {
6681 if (contents != NULL)
6682 free (contents);
6683 return -1;
6684 }
6685 if (info->keep_memory)
6686 elf_section_data (isec)->this_hdr.contents = contents;
6687 }
6688
6689 /* Code scan, because we don't necessarily have relocs on calls to
6690 static functions. */
6691 ret = 0;
6692 for (i = 0; i < isec->size; i += 4)
6693 {
6694 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
6695 /* Is this a branch? */
6696 if ((insn & (0x3f << 26)) == (18 << 26)
6697 /* If branch and link, it's a function call. */
6698 && ((insn & 1) != 0
6699 /* Sibling calls use a plain branch. I don't know a way
6700 of deciding whether a branch is really a sibling call. */
6701 || !branch_ok))
6702 {
6703 ret = 1;
6704 break;
6705 }
6706 }
6707
6708 if (elf_section_data (isec)->this_hdr.contents != contents)
6709 free (contents);
6710 return ret;
6711}
6712
6713/* The linker repeatedly calls this function for each input section,
6714 in the order that input sections are linked into output sections.
6715 Build lists of input sections to determine groupings between which
6716 we may insert linker stubs. */
6717
6718bfd_boolean
6719ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
6720{
6721 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6722 int ret;
6723
6724 if ((isec->output_section->flags & SEC_CODE) != 0
6725 && isec->output_section->index <= htab->top_index)
6726 {
6727 asection **list = htab->input_list + isec->output_section->index;
6728 /* Steal the link_sec pointer for our list. */
6729#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6730 /* This happens to make the list in reverse order,
6731 which is what we want. */
6732 PREV_SEC (isec) = *list;
6733 *list = isec;
6734 }
6735
6736 /* If a code section has a function that uses the TOC then we need
6737 to use the right TOC (obviously). Also, make sure that .opd gets
6738 the correct TOC value for R_PPC64_TOC relocs that don't have or
6739 can't find their function symbol (shouldn't ever happen now). */
6740 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
6741 {
6742 if (elf_gp (isec->owner) != 0)
6743 htab->toc_curr = elf_gp (isec->owner);
6744 }
6745 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
6746 return FALSE;
6747 else
6748 isec->has_gp_reloc = ret;
6749
6750 /* Functions that don't use the TOC can belong in any TOC group.
6751 Use the last TOC base. This happens to make _init and _fini
6752 pasting work. */
6753 htab->stub_group[isec->id].toc_off = htab->toc_curr;
6754 return TRUE;
6755}
6756
6757/* See whether we can group stub sections together. Grouping stub
6758 sections may result in fewer stubs. More importantly, we need to
6759 put all .init* and .fini* stubs at the beginning of the .init or
6760 .fini output sections respectively, because glibc splits the
6761 _init and _fini functions into multiple parts. Putting a stub in
6762 the middle of a function is not a good idea. */
6763
6764static void
6765group_sections (struct ppc_link_hash_table *htab,
6766 bfd_size_type stub_group_size,
6767 bfd_boolean stubs_always_before_branch)
6768{
6769 asection **list = htab->input_list + htab->top_index;
6770 do
6771 {
6772 asection *tail = *list;
6773 while (tail != NULL)
6774 {
6775 asection *curr;
6776 asection *prev;
6777 bfd_size_type total;
6778 bfd_boolean big_sec;
6779 bfd_vma curr_toc;
6780
6781 curr = tail;
6782 total = tail->size;
6783 big_sec = total >= stub_group_size;
6784 curr_toc = htab->stub_group[tail->id].toc_off;
6785
6786 while ((prev = PREV_SEC (curr)) != NULL
6787 && ((total += curr->output_offset - prev->output_offset)
6788 < stub_group_size)
6789 && htab->stub_group[prev->id].toc_off == curr_toc)
6790 curr = prev;
6791
6792 /* OK, the size from the start of CURR to the end is less
6793 than stub_group_size and thus can be handled by one stub
6794 section. (or the tail section is itself larger than
6795 stub_group_size, in which case we may be toast.) We
6796 should really be keeping track of the total size of stubs
6797 added here, as stubs contribute to the final output
6798 section size. That's a little tricky, and this way will
6799 only break if stubs added make the total size more than
6800 2^25, ie. for the default stub_group_size, if stubs total
6801 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6802 do
6803 {
6804 prev = PREV_SEC (tail);
6805 /* Set up this stub group. */
6806 htab->stub_group[tail->id].link_sec = curr;
6807 }
6808 while (tail != curr && (tail = prev) != NULL);
6809
6810 /* But wait, there's more! Input sections up to stub_group_size
6811 bytes before the stub section can be handled by it too.
6812 Don't do this if we have a really large section after the
6813 stubs, as adding more stubs increases the chance that
6814 branches may not reach into the stub section. */
6815 if (!stubs_always_before_branch && !big_sec)
6816 {
6817 total = 0;
6818 while (prev != NULL
6819 && ((total += tail->output_offset - prev->output_offset)
6820 < stub_group_size)
6821 && htab->stub_group[prev->id].toc_off == curr_toc)
6822 {
6823 tail = prev;
6824 prev = PREV_SEC (tail);
6825 htab->stub_group[tail->id].link_sec = curr;
6826 }
6827 }
6828 tail = prev;
6829 }
6830 }
6831 while (list-- != htab->input_list);
6832 free (htab->input_list);
6833#undef PREV_SEC
6834}
6835
6836/* Determine and set the size of the stub section for a final link.
6837
6838 The basic idea here is to examine all the relocations looking for
6839 PC-relative calls to a target that is unreachable with a "bl"
6840 instruction. */
6841
6842bfd_boolean
6843ppc64_elf_size_stubs (bfd *output_bfd,
6844 struct bfd_link_info *info,
6845 bfd_signed_vma group_size,
6846 asection *(*add_stub_section) (const char *, asection *),
6847 void (*layout_sections_again) (void))
6848{
6849 bfd_size_type stub_group_size;
6850 bfd_boolean stubs_always_before_branch;
6851 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6852
6853 /* Stash our params away. */
6854 htab->add_stub_section = add_stub_section;
6855 htab->layout_sections_again = layout_sections_again;
6856 stubs_always_before_branch = group_size < 0;
6857 if (group_size < 0)
6858 stub_group_size = -group_size;
6859 else
6860 stub_group_size = group_size;
6861 if (stub_group_size == 1)
6862 {
6863 /* Default values. */
6864 if (stubs_always_before_branch)
6865 {
6866 stub_group_size = 0x1e00000;
6867 if (htab->has_14bit_branch)
6868 stub_group_size = 0x7800;
6869 }
6870 else
6871 {
6872 stub_group_size = 0x1c00000;
6873 if (htab->has_14bit_branch)
6874 stub_group_size = 0x7000;
6875 }
6876 }
6877
6878 group_sections (htab, stub_group_size, stubs_always_before_branch);
6879
6880 while (1)
6881 {
6882 bfd *input_bfd;
6883 unsigned int bfd_indx;
6884 asection *stub_sec;
6885 bfd_boolean stub_changed;
6886
6887 htab->stub_iteration += 1;
6888 stub_changed = FALSE;
6889
6890 for (input_bfd = info->input_bfds, bfd_indx = 0;
6891 input_bfd != NULL;
6892 input_bfd = input_bfd->link_next, bfd_indx++)
6893 {
6894 Elf_Internal_Shdr *symtab_hdr;
6895 asection *section;
6896 Elf_Internal_Sym *local_syms = NULL;
6897
6898 /* We'll need the symbol table in a second. */
6899 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6900 if (symtab_hdr->sh_info == 0)
6901 continue;
6902
6903 /* Walk over each section attached to the input bfd. */
6904 for (section = input_bfd->sections;
6905 section != NULL;
6906 section = section->next)
6907 {
6908 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6909
6910 /* If there aren't any relocs, then there's nothing more
6911 to do. */
6912 if ((section->flags & SEC_RELOC) == 0
6913 || section->reloc_count == 0)
6914 continue;
6915
6916 /* If this section is a link-once section that will be
6917 discarded, then don't create any stubs. */
6918 if (section->output_section == NULL
6919 || section->output_section->owner != output_bfd)
6920 continue;
6921
6922 /* Get the relocs. */
6923 internal_relocs
6924 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
6925 info->keep_memory);
6926 if (internal_relocs == NULL)
6927 goto error_ret_free_local;
6928
6929 /* Now examine each relocation. */
6930 irela = internal_relocs;
6931 irelaend = irela + section->reloc_count;
6932 for (; irela < irelaend; irela++)
6933 {
6934 enum elf_ppc64_reloc_type r_type;
6935 unsigned int r_indx;
6936 enum ppc_stub_type stub_type;
6937 struct ppc_stub_hash_entry *stub_entry;
6938 asection *sym_sec;
6939 bfd_vma sym_value;
6940 bfd_vma destination;
6941 struct ppc_link_hash_entry *hash;
6942 struct elf_link_hash_entry *h;
6943 Elf_Internal_Sym *sym;
6944 char *stub_name;
6945 const asection *id_sec;
6946
6947 r_type = ELF64_R_TYPE (irela->r_info);
6948 r_indx = ELF64_R_SYM (irela->r_info);
6949
6950 if (r_type >= R_PPC64_max)
6951 {
6952 bfd_set_error (bfd_error_bad_value);
6953 goto error_ret_free_internal;
6954 }
6955
6956 /* Only look for stubs on branch instructions. */
6957 if (r_type != R_PPC64_REL24
6958 && r_type != R_PPC64_REL14
6959 && r_type != R_PPC64_REL14_BRTAKEN
6960 && r_type != R_PPC64_REL14_BRNTAKEN)
6961 continue;
6962
6963 /* Now determine the call target, its name, value,
6964 section. */
6965 destination = 0;
6966 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6967 r_indx, input_bfd))
6968 goto error_ret_free_internal;
6969 hash = (struct ppc_link_hash_entry *) h;
6970
6971 if (hash == NULL)
6972 {
6973 /* It's a local symbol. */
6974 sym_value = sym->st_value;
6975 destination = (sym_value + irela->r_addend
6976 + sym_sec->output_offset
6977 + sym_sec->output_section->vma);
6978 }
6979 else
6980 {
6981 /* It's an external symbol. */
6982 sym_value = 0;
6983 if (hash->elf.root.type == bfd_link_hash_defined
6984 || hash->elf.root.type == bfd_link_hash_defweak)
6985 {
6986 sym_value = hash->elf.root.u.def.value;
6987 if (sym_sec->output_section != NULL)
6988 destination = (sym_value + irela->r_addend
6989 + sym_sec->output_offset
6990 + sym_sec->output_section->vma);
6991 }
6992 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6993 ;
6994 else if (hash->elf.root.type == bfd_link_hash_undefined)
6995 ;
6996 else
6997 {
6998 bfd_set_error (bfd_error_bad_value);
6999 goto error_ret_free_internal;
7000 }
7001 }
7002
7003 /* Determine what (if any) linker stub is needed. */
7004 stub_type = ppc_type_of_stub (section, irela, &hash,
7005 destination);
7006
7007 if (stub_type != ppc_stub_plt_call)
7008 {
7009 /* Check whether we need a TOC adjusting stub.
7010 Since the linker pastes together pieces from
7011 different object files when creating the
7012 _init and _fini functions, it may be that a
7013 call to what looks like a local sym is in
7014 fact a call needing a TOC adjustment. */
7015 if (sym_sec != NULL
7016 && sym_sec->output_section != NULL
7017 && (htab->stub_group[sym_sec->id].toc_off
7018 != htab->stub_group[section->id].toc_off)
7019 && sym_sec->has_gp_reloc
7020 && section->has_gp_reloc)
7021 stub_type = ppc_stub_long_branch_r2off;
7022 }
7023
7024 if (stub_type == ppc_stub_none)
7025 continue;
7026
7027 /* __tls_get_addr calls might be eliminated. */
7028 if (stub_type != ppc_stub_plt_call
7029 && hash != NULL
7030 && &hash->elf == htab->tls_get_addr
7031 && section->has_tls_reloc
7032 && irela != internal_relocs)
7033 {
7034 /* Get tls info. */
7035 char *tls_mask;
7036
7037 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
7038 irela - 1, input_bfd))
7039 goto error_ret_free_internal;
7040 if (*tls_mask != 0)
7041 continue;
7042 }
7043
7044 /* Support for grouping stub sections. */
7045 id_sec = htab->stub_group[section->id].link_sec;
7046
7047 /* Get the name of this stub. */
7048 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
7049 if (!stub_name)
7050 goto error_ret_free_internal;
7051
7052 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
7053 stub_name, FALSE, FALSE);
7054 if (stub_entry != NULL)
7055 {
7056 /* The proper stub has already been created. */
7057 free (stub_name);
7058 continue;
7059 }
7060
7061 stub_entry = ppc_add_stub (stub_name, section, htab);
7062 if (stub_entry == NULL)
7063 {
7064 free (stub_name);
7065 error_ret_free_internal:
7066 if (elf_section_data (section)->relocs == NULL)
7067 free (internal_relocs);
7068 error_ret_free_local:
7069 if (local_syms != NULL
7070 && (symtab_hdr->contents
7071 != (unsigned char *) local_syms))
7072 free (local_syms);
7073 return FALSE;
7074 }
7075
7076 stub_entry->stub_type = stub_type;
7077 stub_entry->target_value = sym_value;
7078 stub_entry->target_section = sym_sec;
7079 stub_entry->h = hash;
7080 stub_entry->addend = irela->r_addend;
7081 stub_changed = TRUE;
7082 }
7083
7084 /* We're done with the internal relocs, free them. */
7085 if (elf_section_data (section)->relocs != internal_relocs)
7086 free (internal_relocs);
7087 }
7088
7089 if (local_syms != NULL
7090 && symtab_hdr->contents != (unsigned char *) local_syms)
7091 {
7092 if (!info->keep_memory)
7093 free (local_syms);
7094 else
7095 symtab_hdr->contents = (unsigned char *) local_syms;
7096 }
7097 }
7098
7099 if (!stub_changed)
7100 break;
7101
7102 /* OK, we've added some stubs. Find out the new size of the
7103 stub sections. */
7104 for (stub_sec = htab->stub_bfd->sections;
7105 stub_sec != NULL;
7106 stub_sec = stub_sec->next)
7107 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7108 stub_sec->size = 0;
7109
7110 htab->brlt->size = 0;
7111 if (info->shared)
7112 htab->relbrlt->size = 0;
7113
7114 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
7115
7116 /* Ask the linker to do its stuff. */
7117 (*htab->layout_sections_again) ();
7118 }
7119
7120 /* It would be nice to strip .branch_lt from the output if the
7121 section is empty, but it's too late. If we strip sections here,
7122 the dynamic symbol table is corrupted since the section symbol
7123 for the stripped section isn't written. */
7124
7125 return TRUE;
7126}
7127
7128/* Called after we have determined section placement. If sections
7129 move, we'll be called again. Provide a value for TOCstart. */
7130
7131bfd_vma
7132ppc64_elf_toc (bfd *obfd)
7133{
7134 asection *s;
7135 bfd_vma TOCstart;
7136
7137 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7138 order. The TOC starts where the first of these sections starts. */
7139 s = bfd_get_section_by_name (obfd, ".got");
7140 if (s == NULL)
7141 s = bfd_get_section_by_name (obfd, ".toc");
7142 if (s == NULL)
7143 s = bfd_get_section_by_name (obfd, ".tocbss");
7144 if (s == NULL)
7145 s = bfd_get_section_by_name (obfd, ".plt");
7146 if (s == NULL)
7147 {
7148 /* This may happen for
7149 o references to TOC base (SYM@toc / TOC[tc0]) without a
7150 .toc directive
7151 o bad linker script
7152 o --gc-sections and empty TOC sections
7153
7154 FIXME: Warn user? */
7155
7156 /* Look for a likely section. We probably won't even be
7157 using TOCstart. */
7158 for (s = obfd->sections; s != NULL; s = s->next)
7159 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
7160 == (SEC_ALLOC | SEC_SMALL_DATA))
7161 break;
7162 if (s == NULL)
7163 for (s = obfd->sections; s != NULL; s = s->next)
7164 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
7165 == (SEC_ALLOC | SEC_SMALL_DATA))
7166 break;
7167 if (s == NULL)
7168 for (s = obfd->sections; s != NULL; s = s->next)
7169 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
7170 break;
7171 if (s == NULL)
7172 for (s = obfd->sections; s != NULL; s = s->next)
7173 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
7174 break;
7175 }
7176
7177 TOCstart = 0;
7178 if (s != NULL)
7179 TOCstart = s->output_section->vma + s->output_offset;
7180
7181 return TOCstart;
7182}
7183
7184/* Build all the stubs associated with the current output file.
7185 The stubs are kept in a hash table attached to the main linker
7186 hash table. This function is called via gldelf64ppc_finish. */
7187
7188bfd_boolean
7189ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
7190 struct bfd_link_info *info,
7191 char **stats)
7192{
7193 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7194 asection *stub_sec;
7195 bfd_byte *p;
7196 int stub_sec_count = 0;
7197
7198 htab->emit_stub_syms = emit_stub_syms;
7199
7200 /* Allocate memory to hold the linker stubs. */
7201 for (stub_sec = htab->stub_bfd->sections;
7202 stub_sec != NULL;
7203 stub_sec = stub_sec->next)
7204 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
7205 && stub_sec->size != 0)
7206 {
7207 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
7208 if (stub_sec->contents == NULL)
7209 return FALSE;
7210 /* We want to check that built size is the same as calculated
7211 size. rawsize is a convenient location to use. */
7212 stub_sec->rawsize = stub_sec->size;
7213 stub_sec->size = 0;
7214 }
7215
7216 if (htab->plt != NULL)
7217 {
7218 unsigned int indx;
7219 bfd_vma plt0;
7220
7221 /* Build the .glink plt call stub. */
7222 plt0 = (htab->plt->output_section->vma
7223 + htab->plt->output_offset
7224 - (htab->glink->output_section->vma
7225 + htab->glink->output_offset
7226 + GLINK_CALL_STUB_SIZE));
7227 if (plt0 + 0x80008000 > 0xffffffff)
7228 {
7229 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
7230 bfd_set_error (bfd_error_bad_value);
7231 return FALSE;
7232 }
7233
7234 if (htab->emit_stub_syms)
7235 {
7236 struct elf_link_hash_entry *h;
7237 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
7238 if (h == NULL)
7239 return FALSE;
7240 if (h->root.type == bfd_link_hash_new)
7241 {
7242 h->root.type = bfd_link_hash_defined;
7243 h->root.u.def.section = htab->glink;
7244 h->root.u.def.value = 0;
7245 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7246 | ELF_LINK_HASH_DEF_REGULAR
7247 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7248 | ELF_LINK_FORCED_LOCAL);
7249 }
7250 }
7251 p = htab->glink->contents;
7252 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
7253 p += 4;
7254 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
7255 p += 4;
7256 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
7257 p += 4;
7258 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7259 p += 4;
7260 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
7261 p += 4;
7262 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
7263 p += 4;
7264 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
7265 p += 4;
7266 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7267 p += 4;
7268 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
7269 p += 4;
7270 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
7271 p += 4;
7272 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
7273 p += 4;
7274 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
7275 p += 4;
7276 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
7277 p += 4;
7278 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
7279 p += 4;
7280 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
7281 p += 4;
7282 bfd_put_32 (htab->glink->owner, BCTR, p);
7283 p += 4;
7284
7285 /* Build the .glink lazy link call stubs. */
7286 indx = 0;
7287 while (p < htab->glink->contents + htab->glink->size)
7288 {
7289 if (indx < 0x8000)
7290 {
7291 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
7292 p += 4;
7293 }
7294 else
7295 {
7296 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
7297 p += 4;
7298 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
7299 p += 4;
7300 }
7301 bfd_put_32 (htab->glink->owner,
7302 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
7303 indx++;
7304 p += 4;
7305 }
7306 htab->glink->rawsize = p - htab->glink->contents;
7307 }
7308
7309 if (htab->brlt->size != 0)
7310 {
7311 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
7312 htab->brlt->size);
7313 if (htab->brlt->contents == NULL)
7314 return FALSE;
7315 }
7316 if (info->shared && htab->relbrlt->size != 0)
7317 {
7318 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
7319 htab->relbrlt->size);
7320 if (htab->relbrlt->contents == NULL)
7321 return FALSE;
7322 }
7323
7324 /* Build the stubs as directed by the stub hash table. */
7325 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
7326
7327 for (stub_sec = htab->stub_bfd->sections;
7328 stub_sec != NULL;
7329 stub_sec = stub_sec->next)
7330 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7331 {
7332 stub_sec_count += 1;
7333 if (stub_sec->rawsize != stub_sec->size)
7334 break;
7335 }
7336
7337 if (stub_sec != NULL
7338 || htab->glink->rawsize != htab->glink->size)
7339 {
7340 htab->stub_error = TRUE;
7341 (*_bfd_error_handler) (_("stubs don't match calculated size"));
7342 }
7343
7344 if (htab->stub_error)
7345 return FALSE;
7346
7347 if (stats != NULL)
7348 {
7349 *stats = bfd_malloc (500);
7350 if (*stats == NULL)
7351 return FALSE;
7352
7353 sprintf (*stats, _("linker stubs in %u groups\n"
7354 " branch %lu\n"
7355 " toc adjust %lu\n"
7356 " long branch %lu\n"
7357 " long toc adj %lu\n"
7358 " plt call %lu"),
7359 stub_sec_count,
7360 htab->stub_count[ppc_stub_long_branch - 1],
7361 htab->stub_count[ppc_stub_long_branch_r2off - 1],
7362 htab->stub_count[ppc_stub_plt_branch - 1],
7363 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
7364 htab->stub_count[ppc_stub_plt_call - 1]);
7365 }
7366 return TRUE;
7367}
7368
7369/* The RELOCATE_SECTION function is called by the ELF backend linker
7370 to handle the relocations for a section.
7371
7372 The relocs are always passed as Rela structures; if the section
7373 actually uses Rel structures, the r_addend field will always be
7374 zero.
7375
7376 This function is responsible for adjust the section contents as
7377 necessary, and (if using Rela relocs and generating a
7378 relocatable output file) adjusting the reloc addend as
7379 necessary.
7380
7381 This function does not have to worry about setting the reloc
7382 address or the reloc symbol index.
7383
7384 LOCAL_SYMS is a pointer to the swapped in local symbols.
7385
7386 LOCAL_SECTIONS is an array giving the section in the input file
7387 corresponding to the st_shndx field of each local symbol.
7388
7389 The global hash table entry for the global symbols can be found
7390 via elf_sym_hashes (input_bfd).
7391
7392 When generating relocatable output, this function must handle
7393 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7394 going to be the section symbol corresponding to the output
7395 section, which means that the addend must be adjusted
7396 accordingly. */
7397
7398static bfd_boolean
7399ppc64_elf_relocate_section (bfd *output_bfd,
7400 struct bfd_link_info *info,
7401 bfd *input_bfd,
7402 asection *input_section,
7403 bfd_byte *contents,
7404 Elf_Internal_Rela *relocs,
7405 Elf_Internal_Sym *local_syms,
7406 asection **local_sections)
7407{
7408 struct ppc_link_hash_table *htab;
7409 Elf_Internal_Shdr *symtab_hdr;
7410 struct elf_link_hash_entry **sym_hashes;
7411 Elf_Internal_Rela *rel;
7412 Elf_Internal_Rela *relend;
7413 Elf_Internal_Rela outrel;
7414 bfd_byte *loc;
7415 struct got_entry **local_got_ents;
7416 bfd_vma TOCstart;
7417 bfd_boolean ret = TRUE;
7418 bfd_boolean is_opd;
7419 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7420 bfd_boolean is_power4 = FALSE;
7421
7422 if (info->relocatable)
7423 return TRUE;
7424
7425 /* Initialize howto table if needed. */
7426 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
7427 ppc_howto_init ();
7428
7429 htab = ppc_hash_table (info);
7430 local_got_ents = elf_local_got_ents (input_bfd);
7431 TOCstart = elf_gp (output_bfd);
7432 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7433 sym_hashes = elf_sym_hashes (input_bfd);
7434 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
7435
7436 rel = relocs;
7437 relend = relocs + input_section->reloc_count;
7438 for (; rel < relend; rel++)
7439 {
7440 enum elf_ppc64_reloc_type r_type;
7441 bfd_vma addend;
7442 bfd_reloc_status_type r;
7443 Elf_Internal_Sym *sym;
7444 asection *sec;
7445 struct elf_link_hash_entry *h;
7446 struct elf_link_hash_entry *fdh;
7447 const char *sym_name;
7448 unsigned long r_symndx, toc_symndx;
7449 char tls_mask, tls_gd, tls_type;
7450 char sym_type;
7451 bfd_vma relocation;
7452 bfd_boolean unresolved_reloc;
7453 bfd_boolean warned;
7454 unsigned long insn, mask;
7455 struct ppc_stub_hash_entry *stub_entry;
7456 bfd_vma max_br_offset;
7457 bfd_vma from;
7458
7459 r_type = ELF64_R_TYPE (rel->r_info);
7460 r_symndx = ELF64_R_SYM (rel->r_info);
7461
7462 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7463 symbol of the previous ADDR64 reloc. The symbol gives us the
7464 proper TOC base to use. */
7465 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
7466 && rel != relocs
7467 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
7468 && is_opd)
7469 r_symndx = ELF64_R_SYM (rel[-1].r_info);
7470
7471 sym = NULL;
7472 sec = NULL;
7473 h = NULL;
7474 sym_name = NULL;
7475 unresolved_reloc = FALSE;
7476 warned = FALSE;
7477
7478 if (r_symndx < symtab_hdr->sh_info)
7479 {
7480 /* It's a local symbol. */
7481 long *opd_adjust;
7482
7483 sym = local_syms + r_symndx;
7484 sec = local_sections[r_symndx];
7485 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7486 sym_type = ELF64_ST_TYPE (sym->st_info);
7487 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7488 opd_adjust = get_opd_info (sec);
7489 if (opd_adjust != NULL)
7490 {
7491 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 24];
7492 if (adjust == -1)
7493 relocation = 0;
7494 else
7495 relocation += adjust;
7496 }
7497 }
7498 else
7499 {
7500 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7501 r_symndx, symtab_hdr, sym_hashes,
7502 h, sec, relocation,
7503 unresolved_reloc, warned);
7504 sym_name = h->root.root.string;
7505 sym_type = h->type;
7506 }
7507
7508 /* TLS optimizations. Replace instruction sequences and relocs
7509 based on information we collected in tls_optimize. We edit
7510 RELOCS so that --emit-relocs will output something sensible
7511 for the final instruction stream. */
7512 tls_mask = 0;
7513 tls_gd = 0;
7514 toc_symndx = 0;
7515 if (IS_PPC64_TLS_RELOC (r_type))
7516 {
7517 if (h != NULL)
7518 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7519 else if (local_got_ents != NULL)
7520 {
7521 char *lgot_masks;
7522 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7523 tls_mask = lgot_masks[r_symndx];
7524 }
7525 if (tls_mask == 0 && r_type == R_PPC64_TLS)
7526 {
7527 /* Check for toc tls entries. */
7528 char *toc_tls;
7529
7530 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7531 rel, input_bfd))
7532 return FALSE;
7533
7534 if (toc_tls)
7535 tls_mask = *toc_tls;
7536 }
7537 }
7538
7539 /* Check that tls relocs are used with tls syms, and non-tls
7540 relocs are used with non-tls syms. */
7541 if (r_symndx != 0
7542 && r_type != R_PPC64_NONE
7543 && (h == NULL
7544 || h->root.type == bfd_link_hash_defined
7545 || h->root.type == bfd_link_hash_defweak)
7546 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7547 {
7548 if (r_type == R_PPC64_TLS && tls_mask != 0)
7549 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7550 ;
7551 else
7552 (*_bfd_error_handler)
7553 (sym_type == STT_TLS
7554 ? _("%s(%s+0x%lx): %s used with TLS symbol %s")
7555 : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"),
7556 bfd_archive_filename (input_bfd),
7557 input_section->name,
7558 (long) rel->r_offset,
7559 ppc64_elf_howto_table[r_type]->name,
7560 sym_name);
7561 }
7562
7563 /* Ensure reloc mapping code below stays sane. */
7564 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7565 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7566 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7567 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7568 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7569 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7570 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7571 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7572 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7573 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7574 abort ();
7575
7576 switch (r_type)
7577 {
7578 default:
7579 break;
7580
7581 case R_PPC64_TOC16:
7582 case R_PPC64_TOC16_LO:
7583 case R_PPC64_TOC16_DS:
7584 case R_PPC64_TOC16_LO_DS:
7585 {
7586 /* Check for toc tls entries. */
7587 char *toc_tls;
7588 int retval;
7589
7590 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7591 rel, input_bfd);
7592 if (retval == 0)
7593 return FALSE;
7594
7595 if (toc_tls)
7596 {
7597 tls_mask = *toc_tls;
7598 if (r_type == R_PPC64_TOC16_DS
7599 || r_type == R_PPC64_TOC16_LO_DS)
7600 {
7601 if (tls_mask != 0
7602 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
7603 goto toctprel;
7604 }
7605 else
7606 {
7607 /* If we found a GD reloc pair, then we might be
7608 doing a GD->IE transition. */
7609 if (retval == 2)
7610 {
7611 tls_gd = TLS_TPRELGD;
7612 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7613 goto tls_get_addr_check;
7614 }
7615 else if (retval == 3)
7616 {
7617 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7618 goto tls_get_addr_check;
7619 }
7620 }
7621 }
7622 }
7623 break;
7624
7625 case R_PPC64_GOT_TPREL16_DS:
7626 case R_PPC64_GOT_TPREL16_LO_DS:
7627 if (tls_mask != 0
7628 && (tls_mask & TLS_TPREL) == 0)
7629 {
7630 toctprel:
7631 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7632 insn &= 31 << 21;
7633 insn |= 0x3c0d0000; /* addis 0,13,0 */
7634 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7635 r_type = R_PPC64_TPREL16_HA;
7636 if (toc_symndx != 0)
7637 {
7638 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7639 /* We changed the symbol. Start over in order to
7640 get h, sym, sec etc. right. */
7641 rel--;
7642 continue;
7643 }
7644 else
7645 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7646 }
7647 break;
7648
7649 case R_PPC64_TLS:
7650 if (tls_mask != 0
7651 && (tls_mask & TLS_TPREL) == 0)
7652 {
7653 bfd_vma rtra;
7654 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7655 if ((insn & ((0x3f << 26) | (31 << 11)))
7656 == ((31 << 26) | (13 << 11)))
7657 rtra = insn & ((1 << 26) - (1 << 16));
7658 else if ((insn & ((0x3f << 26) | (31 << 16)))
7659 == ((31 << 26) | (13 << 16)))
7660 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7661 else
7662 abort ();
7663 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7664 /* add -> addi. */
7665 insn = 14 << 26;
7666 else if ((insn & (31 << 1)) == 23 << 1
7667 && ((insn & (31 << 6)) < 14 << 6
7668 || ((insn & (31 << 6)) >= 16 << 6
7669 && (insn & (31 << 6)) < 24 << 6)))
7670 /* load and store indexed -> dform. */
7671 insn = (32 | ((insn >> 6) & 31)) << 26;
7672 else if ((insn & (31 << 1)) == 21 << 1
7673 && (insn & (0x1a << 6)) == 0)
7674 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7675 insn = (((58 | ((insn >> 6) & 4)) << 26)
7676 | ((insn >> 6) & 1));
7677 else if ((insn & (31 << 1)) == 21 << 1
7678 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7679 /* lwax -> lwa. */
7680 insn = (58 << 26) | 2;
7681 else
7682 abort ();
7683 insn |= rtra;
7684 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7685 /* Was PPC64_TLS which sits on insn boundary, now
7686 PPC64_TPREL16_LO which is at insn+2. */
7687 rel->r_offset += 2;
7688 r_type = R_PPC64_TPREL16_LO;
7689 if (toc_symndx != 0)
7690 {
7691 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7692 /* We changed the symbol. Start over in order to
7693 get h, sym, sec etc. right. */
7694 rel--;
7695 continue;
7696 }
7697 else
7698 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7699 }
7700 break;
7701
7702 case R_PPC64_GOT_TLSGD16_HI:
7703 case R_PPC64_GOT_TLSGD16_HA:
7704 tls_gd = TLS_TPRELGD;
7705 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7706 goto tls_gdld_hi;
7707 break;
7708
7709 case R_PPC64_GOT_TLSLD16_HI:
7710 case R_PPC64_GOT_TLSLD16_HA:
7711 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7712 {
7713 tls_gdld_hi:
7714 if ((tls_mask & tls_gd) != 0)
7715 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7716 + R_PPC64_GOT_TPREL16_DS);
7717 else
7718 {
7719 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7720 rel->r_offset -= 2;
7721 r_type = R_PPC64_NONE;
7722 }
7723 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7724 }
7725 break;
7726
7727 case R_PPC64_GOT_TLSGD16:
7728 case R_PPC64_GOT_TLSGD16_LO:
7729 tls_gd = TLS_TPRELGD;
7730 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7731 goto tls_get_addr_check;
7732 break;
7733
7734 case R_PPC64_GOT_TLSLD16:
7735 case R_PPC64_GOT_TLSLD16_LO:
7736 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7737 {
7738 tls_get_addr_check:
7739 if (rel + 1 < relend)
7740 {
7741 enum elf_ppc64_reloc_type r_type2;
7742 unsigned long r_symndx2;
7743 struct elf_link_hash_entry *h2;
7744 bfd_vma insn1, insn2, insn3;
7745 bfd_vma offset;
7746
7747 /* The next instruction should be a call to
7748 __tls_get_addr. Peek at the reloc to be sure. */
7749 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7750 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7751 if (r_symndx2 < symtab_hdr->sh_info
7752 || (r_type2 != R_PPC64_REL14
7753 && r_type2 != R_PPC64_REL14_BRTAKEN
7754 && r_type2 != R_PPC64_REL14_BRNTAKEN
7755 && r_type2 != R_PPC64_REL24))
7756 break;
7757
7758 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7759 while (h2->root.type == bfd_link_hash_indirect
7760 || h2->root.type == bfd_link_hash_warning)
7761 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7762 if (h2 == NULL || h2 != htab->tls_get_addr)
7763 break;
7764
7765 /* OK, it checks out. Replace the call. */
7766 offset = rel[1].r_offset;
7767 insn1 = bfd_get_32 (output_bfd,
7768 contents + rel->r_offset - 2);
7769 insn3 = bfd_get_32 (output_bfd,
7770 contents + offset + 4);
7771 if ((tls_mask & tls_gd) != 0)
7772 {
7773 /* IE */
7774 insn1 &= (1 << 26) - (1 << 2);
7775 insn1 |= 58 << 26; /* ld */
7776 insn2 = 0x7c636a14; /* add 3,3,13 */
7777 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7778 if ((tls_mask & TLS_EXPLICIT) == 0)
7779 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7780 + R_PPC64_GOT_TPREL16_DS);
7781 else
7782 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7783 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7784 }
7785 else
7786 {
7787 /* LE */
7788 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7789 insn2 = 0x38630000; /* addi 3,3,0 */
7790 if (tls_gd == 0)
7791 {
7792 /* Was an LD reloc. */
7793 r_symndx = 0;
7794 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7795 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7796 }
7797 else if (toc_symndx != 0)
7798 r_symndx = toc_symndx;
7799 r_type = R_PPC64_TPREL16_HA;
7800 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7801 rel[1].r_info = ELF64_R_INFO (r_symndx,
7802 R_PPC64_TPREL16_LO);
7803 rel[1].r_offset += 2;
7804 }
7805 if (insn3 == NOP
7806 || insn3 == CROR_151515 || insn3 == CROR_313131)
7807 {
7808 insn3 = insn2;
7809 insn2 = NOP;
7810 rel[1].r_offset += 4;
7811 }
7812 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7813 bfd_put_32 (output_bfd, insn2, contents + offset);
7814 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7815 if (tls_gd == 0 || toc_symndx != 0)
7816 {
7817 /* We changed the symbol. Start over in order
7818 to get h, sym, sec etc. right. */
7819 rel--;
7820 continue;
7821 }
7822 }
7823 }
7824 break;
7825
7826 case R_PPC64_DTPMOD64:
7827 if (rel + 1 < relend
7828 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7829 && rel[1].r_offset == rel->r_offset + 8)
7830 {
7831 if ((tls_mask & TLS_GD) == 0)
7832 {
7833 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7834 if ((tls_mask & TLS_TPRELGD) != 0)
7835 r_type = R_PPC64_TPREL64;
7836 else
7837 {
7838 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7839 r_type = R_PPC64_NONE;
7840 }
7841 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7842 }
7843 }
7844 else
7845 {
7846 if ((tls_mask & TLS_LD) == 0)
7847 {
7848 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7849 r_type = R_PPC64_NONE;
7850 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7851 }
7852 }
7853 break;
7854
7855 case R_PPC64_TPREL64:
7856 if ((tls_mask & TLS_TPREL) == 0)
7857 {
7858 r_type = R_PPC64_NONE;
7859 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7860 }
7861 break;
7862 }
7863
7864 /* Handle other relocations that tweak non-addend part of insn. */
7865 insn = 0;
7866 max_br_offset = 1 << 25;
7867 addend = rel->r_addend;
7868 switch (r_type)
7869 {
7870 default:
7871 break;
7872
7873 /* Branch taken prediction relocations. */
7874 case R_PPC64_ADDR14_BRTAKEN:
7875 case R_PPC64_REL14_BRTAKEN:
7876 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7877 /* Fall thru. */
7878
7879 /* Branch not taken prediction relocations. */
7880 case R_PPC64_ADDR14_BRNTAKEN:
7881 case R_PPC64_REL14_BRNTAKEN:
7882 insn |= bfd_get_32 (output_bfd,
7883 contents + rel->r_offset) & ~(0x01 << 21);
7884 /* Fall thru. */
7885
7886 case R_PPC64_REL14:
7887 max_br_offset = 1 << 15;
7888 /* Fall thru. */
7889
7890 case R_PPC64_REL24:
7891 /* Calls to functions with a different TOC, such as calls to
7892 shared objects, need to alter the TOC pointer. This is
7893 done using a linkage stub. A REL24 branching to these
7894 linkage stubs needs to be followed by a nop, as the nop
7895 will be replaced with an instruction to restore the TOC
7896 base pointer. */
7897 stub_entry = NULL;
7898 if (((h != NULL
7899 && (fdh = &((struct ppc_link_hash_entry *) h)->oh->elf) != NULL
7900 && fdh->plt.plist != NULL)
7901 || ((fdh = h, sec) != NULL
7902 && sec->output_section != NULL
7903 && sec->id <= htab->top_id
7904 && (htab->stub_group[sec->id].toc_off
7905 != htab->stub_group[input_section->id].toc_off)))
7906 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7907 rel, htab)) != NULL
7908 && (stub_entry->stub_type == ppc_stub_plt_call
7909 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
7910 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
7911 {
7912 bfd_boolean can_plt_call = FALSE;
7913
7914 if (rel->r_offset + 8 <= input_section->size)
7915 {
7916 unsigned long nop;
7917 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7918 if (nop == NOP
7919 || nop == CROR_151515 || nop == CROR_313131)
7920 {
7921 bfd_put_32 (input_bfd, LD_R2_40R1,
7922 contents + rel->r_offset + 4);
7923 can_plt_call = TRUE;
7924 }
7925 }
7926
7927 if (!can_plt_call)
7928 {
7929 if (stub_entry->stub_type == ppc_stub_plt_call)
7930 {
7931 /* If this is a plain branch rather than a branch
7932 and link, don't require a nop. */
7933 unsigned long br;
7934 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
7935 if ((br & 1) == 0)
7936 can_plt_call = TRUE;
7937 }
7938 else if (h != NULL
7939 && strcmp (h->root.root.string,
7940 ".__libc_start_main") == 0)
7941 {
7942 /* Allow crt1 branch to go via a toc adjusting stub. */
7943 can_plt_call = TRUE;
7944 }
7945 else
7946 {
7947 if (strcmp (input_section->output_section->name,
7948 ".init") == 0
7949 || strcmp (input_section->output_section->name,
7950 ".fini") == 0)
7951 (*_bfd_error_handler)
7952 (_("%s(%s+0x%lx): automatic multiple TOCs "
7953 "not supported using your crt files; "
7954 "recompile with -mminimal-toc or upgrade gcc"),
7955 bfd_archive_filename (input_bfd),
7956 input_section->name,
7957 (long) rel->r_offset);
7958 else
7959 (*_bfd_error_handler)
7960 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7961 "does not allow automatic multiple TOCs; "
7962 "recompile with -mminimal-toc or "
7963 "-fno-optimize-sibling-calls, "
7964 "or make `%s' extern"),
7965 bfd_archive_filename (input_bfd),
7966 input_section->name,
7967 (long) rel->r_offset,
7968 sym_name,
7969 sym_name);
7970 bfd_set_error (bfd_error_bad_value);
7971 ret = FALSE;
7972 }
7973 }
7974
7975 if (can_plt_call
7976 && stub_entry->stub_type == ppc_stub_plt_call)
7977 unresolved_reloc = FALSE;
7978 }
7979
7980 /* If the branch is out of reach we ought to have a long
7981 branch stub. */
7982 from = (rel->r_offset
7983 + input_section->output_offset
7984 + input_section->output_section->vma);
7985
7986 if (stub_entry == NULL
7987 && (relocation + rel->r_addend - from + max_br_offset
7988 >= 2 * max_br_offset)
7989 && r_type != R_PPC64_ADDR14_BRTAKEN
7990 && r_type != R_PPC64_ADDR14_BRNTAKEN)
7991 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, htab);
7992
7993 if (stub_entry != NULL)
7994 {
7995 /* Munge up the value and addend so that we call the stub
7996 rather than the procedure directly. */
7997 relocation = (stub_entry->stub_offset
7998 + stub_entry->stub_sec->output_offset
7999 + stub_entry->stub_sec->output_section->vma);
8000 addend = 0;
8001 }
8002
8003 if (insn != 0)
8004 {
8005 if (is_power4)
8006 {
8007 /* Set 'a' bit. This is 0b00010 in BO field for branch
8008 on CR(BI) insns (BO == 001at or 011at), and 0b01000
8009 for branch on CTR insns (BO == 1a00t or 1a01t). */
8010 if ((insn & (0x14 << 21)) == (0x04 << 21))
8011 insn |= 0x02 << 21;
8012 else if ((insn & (0x14 << 21)) == (0x10 << 21))
8013 insn |= 0x08 << 21;
8014 else
8015 break;
8016 }
8017 else
8018 {
8019 /* Invert 'y' bit if not the default. */
8020 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
8021 insn ^= 0x01 << 21;
8022 }
8023
8024 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
8025 }
8026
8027 /* NOP out calls to undefined weak functions.
8028 We can thus call a weak function without first
8029 checking whether the function is defined. */
8030 else if (h != NULL
8031 && h->root.type == bfd_link_hash_undefweak
8032 && r_type == R_PPC64_REL24
8033 && relocation == 0
8034 && rel->r_addend == 0)
8035 {
8036 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
8037 continue;
8038 }
8039 break;
8040 }
8041
8042 /* Set `addend'. */
8043 tls_type = 0;
8044 switch (r_type)
8045 {
8046 default:
8047 (*_bfd_error_handler)
8048 (_("%s: unknown relocation type %d for symbol %s"),
8049 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
8050
8051 bfd_set_error (bfd_error_bad_value);
8052 ret = FALSE;
8053 continue;
8054
8055 case R_PPC64_NONE:
8056 case R_PPC64_TLS:
8057 case R_PPC64_GNU_VTINHERIT:
8058 case R_PPC64_GNU_VTENTRY:
8059 continue;
8060
8061 /* GOT16 relocations. Like an ADDR16 using the symbol's
8062 address in the GOT as relocation value instead of the
8063 symbol's value itself. Also, create a GOT entry for the
8064 symbol and put the symbol value there. */
8065 case R_PPC64_GOT_TLSGD16:
8066 case R_PPC64_GOT_TLSGD16_LO:
8067 case R_PPC64_GOT_TLSGD16_HI:
8068 case R_PPC64_GOT_TLSGD16_HA:
8069 tls_type = TLS_TLS | TLS_GD;
8070 goto dogot;
8071
8072 case R_PPC64_GOT_TLSLD16:
8073 case R_PPC64_GOT_TLSLD16_LO:
8074 case R_PPC64_GOT_TLSLD16_HI:
8075 case R_PPC64_GOT_TLSLD16_HA:
8076 tls_type = TLS_TLS | TLS_LD;
8077 goto dogot;
8078
8079 case R_PPC64_GOT_TPREL16_DS:
8080 case R_PPC64_GOT_TPREL16_LO_DS:
8081 case R_PPC64_GOT_TPREL16_HI:
8082 case R_PPC64_GOT_TPREL16_HA:
8083 tls_type = TLS_TLS | TLS_TPREL;
8084 goto dogot;
8085
8086 case R_PPC64_GOT_DTPREL16_DS:
8087 case R_PPC64_GOT_DTPREL16_LO_DS:
8088 case R_PPC64_GOT_DTPREL16_HI:
8089 case R_PPC64_GOT_DTPREL16_HA:
8090 tls_type = TLS_TLS | TLS_DTPREL;
8091 goto dogot;
8092
8093 case R_PPC64_GOT16:
8094 case R_PPC64_GOT16_LO:
8095 case R_PPC64_GOT16_HI:
8096 case R_PPC64_GOT16_HA:
8097 case R_PPC64_GOT16_DS:
8098 case R_PPC64_GOT16_LO_DS:
8099 dogot:
8100 {
8101 /* Relocation is to the entry for this symbol in the global
8102 offset table. */
8103 asection *got;
8104 bfd_vma *offp;
8105 bfd_vma off;
8106 unsigned long indx = 0;
8107
8108 if (tls_type == (TLS_TLS | TLS_LD)
8109 && (h == NULL
8110 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
8111 offp = &ppc64_tlsld_got (input_bfd)->offset;
8112 else
8113 {
8114 struct got_entry *ent;
8115
8116 if (h != NULL)
8117 {
8118 bfd_boolean dyn = htab->elf.dynamic_sections_created;
8119 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8120 || (info->shared
8121 && SYMBOL_REFERENCES_LOCAL (info, h)))
8122 /* This is actually a static link, or it is a
8123 -Bsymbolic link and the symbol is defined
8124 locally, or the symbol was forced to be local
8125 because of a version file. */
8126 ;
8127 else
8128 {
8129 indx = h->dynindx;
8130 unresolved_reloc = FALSE;
8131 }
8132 ent = h->got.glist;
8133 }
8134 else
8135 {
8136 if (local_got_ents == NULL)
8137 abort ();
8138 ent = local_got_ents[r_symndx];
8139 }
8140
8141 for (; ent != NULL; ent = ent->next)
8142 if (ent->addend == rel->r_addend
8143 && ent->owner == input_bfd
8144 && ent->tls_type == tls_type)
8145 break;
8146 if (ent == NULL)
8147 abort ();
8148 offp = &ent->got.offset;
8149 }
8150
8151 got = ppc64_elf_tdata (input_bfd)->got;
8152 if (got == NULL)
8153 abort ();
8154
8155 /* The offset must always be a multiple of 8. We use the
8156 least significant bit to record whether we have already
8157 processed this entry. */
8158 off = *offp;
8159 if ((off & 1) != 0)
8160 off &= ~1;
8161 else
8162 {
8163 /* Generate relocs for the dynamic linker, except in
8164 the case of TLSLD where we'll use one entry per
8165 module. */
8166 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
8167
8168 *offp = off | 1;
8169 if ((info->shared || indx != 0)
8170 && (h == NULL
8171 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8172 || h->root.type != bfd_link_hash_undefweak))
8173 {
8174 outrel.r_offset = (got->output_section->vma
8175 + got->output_offset
8176 + off);
8177 outrel.r_addend = rel->r_addend;
8178 if (tls_type & (TLS_LD | TLS_GD))
8179 {
8180 outrel.r_addend = 0;
8181 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
8182 if (tls_type == (TLS_TLS | TLS_GD))
8183 {
8184 loc = relgot->contents;
8185 loc += (relgot->reloc_count++
8186 * sizeof (Elf64_External_Rela));
8187 bfd_elf64_swap_reloca_out (output_bfd,
8188 &outrel, loc);
8189 outrel.r_offset += 8;
8190 outrel.r_addend = rel->r_addend;
8191 outrel.r_info
8192 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8193 }
8194 }
8195 else if (tls_type == (TLS_TLS | TLS_DTPREL))
8196 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8197 else if (tls_type == (TLS_TLS | TLS_TPREL))
8198 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
8199 else if (indx == 0)
8200 {
8201 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
8202
8203 /* Write the .got section contents for the sake
8204 of prelink. */
8205 loc = got->contents + off;
8206 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
8207 loc);
8208 }
8209 else
8210 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
8211
8212 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
8213 {
8214 outrel.r_addend += relocation;
8215 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8216 outrel.r_addend -= htab->elf.tls_sec->vma;
8217 }
8218 loc = relgot->contents;
8219 loc += (relgot->reloc_count++
8220 * sizeof (Elf64_External_Rela));
8221 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8222 }
8223
8224 /* Init the .got section contents here if we're not
8225 emitting a reloc. */
8226 else
8227 {
8228 relocation += rel->r_addend;
8229 if (tls_type == (TLS_TLS | TLS_LD))
8230 relocation = 1;
8231 else if (tls_type != 0)
8232 {
8233 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
8234 if (tls_type == (TLS_TLS | TLS_TPREL))
8235 relocation += DTP_OFFSET - TP_OFFSET;
8236
8237 if (tls_type == (TLS_TLS | TLS_GD))
8238 {
8239 bfd_put_64 (output_bfd, relocation,
8240 got->contents + off + 8);
8241 relocation = 1;
8242 }
8243 }
8244
8245 bfd_put_64 (output_bfd, relocation,
8246 got->contents + off);
8247 }
8248 }
8249
8250 if (off >= (bfd_vma) -2)
8251 abort ();
8252
8253 relocation = got->output_offset + off;
8254
8255 /* TOC base (r2) is TOC start plus 0x8000. */
8256 addend = -TOC_BASE_OFF;
8257 }
8258 break;
8259
8260 case R_PPC64_PLT16_HA:
8261 case R_PPC64_PLT16_HI:
8262 case R_PPC64_PLT16_LO:
8263 case R_PPC64_PLT32:
8264 case R_PPC64_PLT64:
8265 /* Relocation is to the entry for this symbol in the
8266 procedure linkage table. */
8267
8268 /* Resolve a PLT reloc against a local symbol directly,
8269 without using the procedure linkage table. */
8270 if (h == NULL)
8271 break;
8272
8273 /* It's possible that we didn't make a PLT entry for this
8274 symbol. This happens when statically linking PIC code,
8275 or when using -Bsymbolic. Go find a match if there is a
8276 PLT entry. */
8277 if (htab->plt != NULL)
8278 {
8279 struct plt_entry *ent;
8280 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8281 if (ent->addend == rel->r_addend
8282 && ent->plt.offset != (bfd_vma) -1)
8283 {
8284 relocation = (htab->plt->output_section->vma
8285 + htab->plt->output_offset
8286 + ent->plt.offset);
8287 unresolved_reloc = FALSE;
8288 }
8289 }
8290 break;
8291
8292 case R_PPC64_TOC:
8293 /* Relocation value is TOC base. */
8294 relocation = TOCstart;
8295 if (r_symndx == 0)
8296 relocation += htab->stub_group[input_section->id].toc_off;
8297 else if (unresolved_reloc)
8298 ;
8299 else if (sec != NULL && sec->id <= htab->top_id)
8300 relocation += htab->stub_group[sec->id].toc_off;
8301 else
8302 unresolved_reloc = TRUE;
8303 goto dodyn2;
8304
8305 /* TOC16 relocs. We want the offset relative to the TOC base,
8306 which is the address of the start of the TOC plus 0x8000.
8307 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8308 in this order. */
8309 case R_PPC64_TOC16:
8310 case R_PPC64_TOC16_LO:
8311 case R_PPC64_TOC16_HI:
8312 case R_PPC64_TOC16_DS:
8313 case R_PPC64_TOC16_LO_DS:
8314 case R_PPC64_TOC16_HA:
8315 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
8316 break;
8317
8318 /* Relocate against the beginning of the section. */
8319 case R_PPC64_SECTOFF:
8320 case R_PPC64_SECTOFF_LO:
8321 case R_PPC64_SECTOFF_HI:
8322 case R_PPC64_SECTOFF_DS:
8323 case R_PPC64_SECTOFF_LO_DS:
8324 case R_PPC64_SECTOFF_HA:
8325 if (sec != NULL)
8326 addend -= sec->output_section->vma;
8327 break;
8328
8329 case R_PPC64_REL14:
8330 case R_PPC64_REL14_BRNTAKEN:
8331 case R_PPC64_REL14_BRTAKEN:
8332 case R_PPC64_REL24:
8333 break;
8334
8335 case R_PPC64_TPREL16:
8336 case R_PPC64_TPREL16_LO:
8337 case R_PPC64_TPREL16_HI:
8338 case R_PPC64_TPREL16_HA:
8339 case R_PPC64_TPREL16_DS:
8340 case R_PPC64_TPREL16_LO_DS:
8341 case R_PPC64_TPREL16_HIGHER:
8342 case R_PPC64_TPREL16_HIGHERA:
8343 case R_PPC64_TPREL16_HIGHEST:
8344 case R_PPC64_TPREL16_HIGHESTA:
8345 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8346 if (info->shared)
8347 /* The TPREL16 relocs shouldn't really be used in shared
8348 libs as they will result in DT_TEXTREL being set, but
8349 support them anyway. */
8350 goto dodyn;
8351 break;
8352
8353 case R_PPC64_DTPREL16:
8354 case R_PPC64_DTPREL16_LO:
8355 case R_PPC64_DTPREL16_HI:
8356 case R_PPC64_DTPREL16_HA:
8357 case R_PPC64_DTPREL16_DS:
8358 case R_PPC64_DTPREL16_LO_DS:
8359 case R_PPC64_DTPREL16_HIGHER:
8360 case R_PPC64_DTPREL16_HIGHERA:
8361 case R_PPC64_DTPREL16_HIGHEST:
8362 case R_PPC64_DTPREL16_HIGHESTA:
8363 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8364 break;
8365
8366 case R_PPC64_DTPMOD64:
8367 relocation = 1;
8368 addend = 0;
8369 goto dodyn;
8370
8371 case R_PPC64_TPREL64:
8372 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8373 goto dodyn;
8374
8375 case R_PPC64_DTPREL64:
8376 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8377 /* Fall thru */
8378
8379 /* Relocations that may need to be propagated if this is a
8380 dynamic object. */
8381 case R_PPC64_REL30:
8382 case R_PPC64_REL32:
8383 case R_PPC64_REL64:
8384 case R_PPC64_ADDR14:
8385 case R_PPC64_ADDR14_BRNTAKEN:
8386 case R_PPC64_ADDR14_BRTAKEN:
8387 case R_PPC64_ADDR16:
8388 case R_PPC64_ADDR16_DS:
8389 case R_PPC64_ADDR16_HA:
8390 case R_PPC64_ADDR16_HI:
8391 case R_PPC64_ADDR16_HIGHER:
8392 case R_PPC64_ADDR16_HIGHERA:
8393 case R_PPC64_ADDR16_HIGHEST:
8394 case R_PPC64_ADDR16_HIGHESTA:
8395 case R_PPC64_ADDR16_LO:
8396 case R_PPC64_ADDR16_LO_DS:
8397 case R_PPC64_ADDR24:
8398 case R_PPC64_ADDR32:
8399 case R_PPC64_ADDR64:
8400 case R_PPC64_UADDR16:
8401 case R_PPC64_UADDR32:
8402 case R_PPC64_UADDR64:
8403 /* r_symndx will be zero only for relocs against symbols
8404 from removed linkonce sections, or sections discarded by
8405 a linker script. */
8406 dodyn:
8407 if (r_symndx == 0)
8408 break;
8409 /* Fall thru. */
8410
8411 dodyn2:
8412 if ((input_section->flags & SEC_ALLOC) == 0)
8413 break;
8414
8415 if (NO_OPD_RELOCS && is_opd)
8416 break;
8417
8418 if ((info->shared
8419 && (h == NULL
8420 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8421 || h->root.type != bfd_link_hash_undefweak)
8422 && (MUST_BE_DYN_RELOC (r_type)
8423 || !SYMBOL_CALLS_LOCAL (info, h)))
8424 || (ELIMINATE_COPY_RELOCS
8425 && !info->shared
8426 && h != NULL
8427 && h->dynindx != -1
8428 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
8429 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8430 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
8431 {
8432 Elf_Internal_Rela outrel;
8433 bfd_boolean skip, relocate;
8434 asection *sreloc;
8435 bfd_byte *loc;
8436 bfd_vma out_off;
8437
8438 /* When generating a dynamic object, these relocations
8439 are copied into the output file to be resolved at run
8440 time. */
8441
8442 skip = FALSE;
8443 relocate = FALSE;
8444
8445 out_off = _bfd_elf_section_offset (output_bfd, info,
8446 input_section, rel->r_offset);
8447 if (out_off == (bfd_vma) -1)
8448 skip = TRUE;
8449 else if (out_off == (bfd_vma) -2)
8450 skip = TRUE, relocate = TRUE;
8451 out_off += (input_section->output_section->vma
8452 + input_section->output_offset);
8453 outrel.r_offset = out_off;
8454 outrel.r_addend = rel->r_addend;
8455
8456 /* Optimize unaligned reloc use. */
8457 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
8458 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
8459 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
8460 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
8461 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
8462 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
8463 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
8464 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
8465 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
8466
8467 if (skip)
8468 memset (&outrel, 0, sizeof outrel);
8469 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
8470 && !is_opd
8471 && r_type != R_PPC64_TOC)
8472 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
8473 else
8474 {
8475 /* This symbol is local, or marked to become local,
8476 or this is an opd section reloc which must point
8477 at a local function. */
8478 outrel.r_addend += relocation;
8479 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
8480 {
8481 if (is_opd && h != NULL)
8482 {
8483 /* Lie about opd entries. This case occurs
8484 when building shared libraries and we
8485 reference a function in another shared
8486 lib. The same thing happens for a weak
8487 definition in an application that's
8488 overridden by a strong definition in a
8489 shared lib. (I believe this is a generic
8490 bug in binutils handling of weak syms.)
8491 In these cases we won't use the opd
8492 entry in this lib. */
8493 unresolved_reloc = FALSE;
8494 }
8495 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8496
8497 /* We need to relocate .opd contents for ld.so.
8498 Prelink also wants simple and consistent rules
8499 for relocs. This make all RELATIVE relocs have
8500 *r_offset equal to r_addend. */
8501 relocate = TRUE;
8502 }
8503 else
8504 {
8505 long indx = 0;
8506
8507 if (bfd_is_abs_section (sec))
8508 ;
8509 else if (sec == NULL || sec->owner == NULL)
8510 {
8511 bfd_set_error (bfd_error_bad_value);
8512 return FALSE;
8513 }
8514 else
8515 {
8516 asection *osec;
8517
8518 osec = sec->output_section;
8519 indx = elf_section_data (osec)->dynindx;
8520
8521 /* We are turning this relocation into one
8522 against a section symbol, so subtract out
8523 the output section's address but not the
8524 offset of the input section in the output
8525 section. */
8526 outrel.r_addend -= osec->vma;
8527 }
8528
8529 outrel.r_info = ELF64_R_INFO (indx, r_type);
8530 }
8531 }
8532
8533 sreloc = elf_section_data (input_section)->sreloc;
8534 if (sreloc == NULL)
8535 abort ();
8536
8537 loc = sreloc->contents;
8538 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
8539 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8540
8541 /* If this reloc is against an external symbol, it will
8542 be computed at runtime, so there's no need to do
8543 anything now. However, for the sake of prelink ensure
8544 that the section contents are a known value. */
8545 if (! relocate)
8546 {
8547 unresolved_reloc = FALSE;
8548 /* The value chosen here is quite arbitrary as ld.so
8549 ignores section contents except for the special
8550 case of .opd where the contents might be accessed
8551 before relocation. Choose zero, as that won't
8552 cause reloc overflow. */
8553 relocation = 0;
8554 addend = 0;
8555 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8556 to improve backward compatibility with older
8557 versions of ld. */
8558 if (r_type == R_PPC64_ADDR64)
8559 addend = outrel.r_addend;
8560 /* Adjust pc_relative relocs to have zero in *r_offset. */
8561 else if (ppc64_elf_howto_table[r_type]->pc_relative)
8562 addend = (input_section->output_section->vma
8563 + input_section->output_offset
8564 + rel->r_offset);
8565 }
8566 }
8567 break;
8568
8569 case R_PPC64_COPY:
8570 case R_PPC64_GLOB_DAT:
8571 case R_PPC64_JMP_SLOT:
8572 case R_PPC64_RELATIVE:
8573 /* We shouldn't ever see these dynamic relocs in relocatable
8574 files. */
8575 /* Fall through. */
8576
8577 case R_PPC64_PLTGOT16:
8578 case R_PPC64_PLTGOT16_DS:
8579 case R_PPC64_PLTGOT16_HA:
8580 case R_PPC64_PLTGOT16_HI:
8581 case R_PPC64_PLTGOT16_LO:
8582 case R_PPC64_PLTGOT16_LO_DS:
8583 case R_PPC64_PLTREL32:
8584 case R_PPC64_PLTREL64:
8585 /* These ones haven't been implemented yet. */
8586
8587 (*_bfd_error_handler)
8588 (_("%s: relocation %s is not supported for symbol %s."),
8589 bfd_archive_filename (input_bfd),
8590 ppc64_elf_howto_table[r_type]->name, sym_name);
8591
8592 bfd_set_error (bfd_error_invalid_operation);
8593 ret = FALSE;
8594 continue;
8595 }
8596
8597 /* Do any further special processing. */
8598 switch (r_type)
8599 {
8600 default:
8601 break;
8602
8603 case R_PPC64_ADDR16_HA:
8604 case R_PPC64_ADDR16_HIGHERA:
8605 case R_PPC64_ADDR16_HIGHESTA:
8606 case R_PPC64_GOT16_HA:
8607 case R_PPC64_PLTGOT16_HA:
8608 case R_PPC64_PLT16_HA:
8609 case R_PPC64_TOC16_HA:
8610 case R_PPC64_SECTOFF_HA:
8611 case R_PPC64_TPREL16_HA:
8612 case R_PPC64_DTPREL16_HA:
8613 case R_PPC64_GOT_TLSGD16_HA:
8614 case R_PPC64_GOT_TLSLD16_HA:
8615 case R_PPC64_GOT_TPREL16_HA:
8616 case R_PPC64_GOT_DTPREL16_HA:
8617 case R_PPC64_TPREL16_HIGHER:
8618 case R_PPC64_TPREL16_HIGHERA:
8619 case R_PPC64_TPREL16_HIGHEST:
8620 case R_PPC64_TPREL16_HIGHESTA:
8621 case R_PPC64_DTPREL16_HIGHER:
8622 case R_PPC64_DTPREL16_HIGHERA:
8623 case R_PPC64_DTPREL16_HIGHEST:
8624 case R_PPC64_DTPREL16_HIGHESTA:
8625 /* It's just possible that this symbol is a weak symbol
8626 that's not actually defined anywhere. In that case,
8627 'sec' would be NULL, and we should leave the symbol
8628 alone (it will be set to zero elsewhere in the link). */
8629 if (sec != NULL)
8630 /* Add 0x10000 if sign bit in 0:15 is set.
8631 Bits 0:15 are not used. */
8632 addend += 0x8000;
8633 break;
8634
8635 case R_PPC64_ADDR16_DS:
8636 case R_PPC64_ADDR16_LO_DS:
8637 case R_PPC64_GOT16_DS:
8638 case R_PPC64_GOT16_LO_DS:
8639 case R_PPC64_PLT16_LO_DS:
8640 case R_PPC64_SECTOFF_DS:
8641 case R_PPC64_SECTOFF_LO_DS:
8642 case R_PPC64_TOC16_DS:
8643 case R_PPC64_TOC16_LO_DS:
8644 case R_PPC64_PLTGOT16_DS:
8645 case R_PPC64_PLTGOT16_LO_DS:
8646 case R_PPC64_GOT_TPREL16_DS:
8647 case R_PPC64_GOT_TPREL16_LO_DS:
8648 case R_PPC64_GOT_DTPREL16_DS:
8649 case R_PPC64_GOT_DTPREL16_LO_DS:
8650 case R_PPC64_TPREL16_DS:
8651 case R_PPC64_TPREL16_LO_DS:
8652 case R_PPC64_DTPREL16_DS:
8653 case R_PPC64_DTPREL16_LO_DS:
8654 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
8655 mask = 3;
8656 /* If this reloc is against an lq insn, then the value must be
8657 a multiple of 16. This is somewhat of a hack, but the
8658 "correct" way to do this by defining _DQ forms of all the
8659 _DS relocs bloats all reloc switches in this file. It
8660 doesn't seem to make much sense to use any of these relocs
8661 in data, so testing the insn should be safe. */
8662 if ((insn & (0x3f << 26)) == (56u << 26))
8663 mask = 15;
8664 if (((relocation + addend) & mask) != 0)
8665 {
8666 (*_bfd_error_handler)
8667 (_("%s: error: relocation %s not a multiple of %d"),
8668 bfd_archive_filename (input_bfd),
8669 ppc64_elf_howto_table[r_type]->name,
8670 mask + 1);
8671 bfd_set_error (bfd_error_bad_value);
8672 ret = FALSE;
8673 continue;
8674 }
8675 break;
8676 }
8677
8678 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8679 because such sections are not SEC_ALLOC and thus ld.so will
8680 not process them. */
8681 if (unresolved_reloc
8682 && !((input_section->flags & SEC_DEBUGGING) != 0
8683 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8684 {
8685 (*_bfd_error_handler)
8686 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8687 bfd_archive_filename (input_bfd),
8688 bfd_get_section_name (input_bfd, input_section),
8689 (long) rel->r_offset,
8690 ppc64_elf_howto_table[(int) r_type]->name,
8691 h->root.root.string);
8692 ret = FALSE;
8693 }
8694
8695 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8696 input_bfd,
8697 input_section,
8698 contents,
8699 rel->r_offset,
8700 relocation,
8701 addend);
8702
8703 if (r != bfd_reloc_ok)
8704 {
8705 if (sym_name == NULL)
8706 sym_name = "(null)";
8707 if (r == bfd_reloc_overflow)
8708 {
8709 if (warned)
8710 continue;
8711 if (h != NULL
8712 && h->root.type == bfd_link_hash_undefweak
8713 && ppc64_elf_howto_table[r_type]->pc_relative)
8714 {
8715 /* Assume this is a call protected by other code that
8716 detects the symbol is undefined. If this is the case,
8717 we can safely ignore the overflow. If not, the
8718 program is hosed anyway, and a little warning isn't
8719 going to help. */
8720
8721 continue;
8722 }
8723
8724 if (!((*info->callbacks->reloc_overflow)
8725 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
8726 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8727 return FALSE;
8728 }
8729 else
8730 {
8731 (*_bfd_error_handler)
8732 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8733 bfd_archive_filename (input_bfd),
8734 bfd_get_section_name (input_bfd, input_section),
8735 (long) rel->r_offset,
8736 ppc64_elf_howto_table[r_type]->name,
8737 sym_name,
8738 (int) r);
8739 ret = FALSE;
8740 }
8741 }
8742 }
8743
8744 return ret;
8745}
8746
8747/* Adjust the value of any local symbols in opd sections. */
8748
8749static bfd_boolean
8750ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
8751 const char *name ATTRIBUTE_UNUSED,
8752 Elf_Internal_Sym *elfsym,
8753 asection *input_sec,
8754 struct elf_link_hash_entry *h)
8755{
8756 long *opd_adjust, adjust;
8757 bfd_vma value;
8758
8759 if (h != NULL)
8760 return TRUE;
8761
8762 opd_adjust = get_opd_info (input_sec);
8763 if (opd_adjust == NULL)
8764 return TRUE;
8765
8766 value = elfsym->st_value - input_sec->output_offset;
8767 if (!info->relocatable)
8768 value -= input_sec->output_section->vma;
8769
8770 adjust = opd_adjust[value / 24];
8771 if (adjust == -1)
8772 elfsym->st_value = 0;
8773 else
8774 elfsym->st_value += adjust;
8775 return TRUE;
8776}
8777
8778/* Finish up dynamic symbol handling. We set the contents of various
8779 dynamic sections here. */
8780
8781static bfd_boolean
8782ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
8783 struct bfd_link_info *info,
8784 struct elf_link_hash_entry *h,
8785 Elf_Internal_Sym *sym)
8786{
8787 struct ppc_link_hash_table *htab;
8788 bfd *dynobj;
8789
8790 htab = ppc_hash_table (info);
8791 dynobj = htab->elf.dynobj;
8792
8793 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8794 {
8795 struct plt_entry *ent;
8796 Elf_Internal_Rela rela;
8797 bfd_byte *loc;
8798
8799 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8800 if (ent->plt.offset != (bfd_vma) -1)
8801 {
8802 /* This symbol has an entry in the procedure linkage
8803 table. Set it up. */
8804
8805 if (htab->plt == NULL
8806 || htab->relplt == NULL
8807 || htab->glink == NULL)
8808 abort ();
8809
8810 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8811 fill in the PLT entry. */
8812 rela.r_offset = (htab->plt->output_section->vma
8813 + htab->plt->output_offset
8814 + ent->plt.offset);
8815 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8816 rela.r_addend = ent->addend;
8817
8818 loc = htab->relplt->contents;
8819 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8820 * sizeof (Elf64_External_Rela));
8821 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8822 }
8823 }
8824
8825 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8826 {
8827 Elf_Internal_Rela rela;
8828 bfd_byte *loc;
8829
8830 /* This symbol needs a copy reloc. Set it up. */
8831
8832 if (h->dynindx == -1
8833 || (h->root.type != bfd_link_hash_defined
8834 && h->root.type != bfd_link_hash_defweak)
8835 || htab->relbss == NULL)
8836 abort ();
8837
8838 rela.r_offset = (h->root.u.def.value
8839 + h->root.u.def.section->output_section->vma
8840 + h->root.u.def.section->output_offset);
8841 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8842 rela.r_addend = 0;
8843 loc = htab->relbss->contents;
8844 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
8845 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8846 }
8847
8848 /* Mark some specially defined symbols as absolute. */
8849 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8850 sym->st_shndx = SHN_ABS;
8851
8852 return TRUE;
8853}
8854
8855/* Used to decide how to sort relocs in an optimal manner for the
8856 dynamic linker, before writing them out. */
8857
8858static enum elf_reloc_type_class
8859ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8860{
8861 enum elf_ppc64_reloc_type r_type;
8862
8863 r_type = ELF64_R_TYPE (rela->r_info);
8864 switch (r_type)
8865 {
8866 case R_PPC64_RELATIVE:
8867 return reloc_class_relative;
8868 case R_PPC64_JMP_SLOT:
8869 return reloc_class_plt;
8870 case R_PPC64_COPY:
8871 return reloc_class_copy;
8872 default:
8873 return reloc_class_normal;
8874 }
8875}
8876
8877/* Finish up the dynamic sections. */
8878
8879static bfd_boolean
8880ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
8881 struct bfd_link_info *info)
8882{
8883 struct ppc_link_hash_table *htab;
8884 bfd *dynobj;
8885 asection *sdyn;
8886
8887 htab = ppc_hash_table (info);
8888 dynobj = htab->elf.dynobj;
8889 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8890
8891 if (htab->elf.dynamic_sections_created)
8892 {
8893 Elf64_External_Dyn *dyncon, *dynconend;
8894
8895 if (sdyn == NULL || htab->got == NULL)
8896 abort ();
8897
8898 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8899 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
8900 for (; dyncon < dynconend; dyncon++)
8901 {
8902 Elf_Internal_Dyn dyn;
8903 asection *s;
8904
8905 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8906
8907 switch (dyn.d_tag)
8908 {
8909 default:
8910 continue;
8911
8912 case DT_PPC64_GLINK:
8913 s = htab->glink;
8914 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8915 /* We stupidly defined DT_PPC64_GLINK to be the start
8916 of glink rather than the first entry point, which is
8917 what ld.so needs, and now have a bigger stub to
8918 support automatic multiple TOCs. */
8919 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
8920 break;
8921
8922 case DT_PPC64_OPD:
8923 s = bfd_get_section_by_name (output_bfd, ".opd");
8924 if (s == NULL)
8925 continue;
8926 dyn.d_un.d_ptr = s->vma;
8927 break;
8928
8929 case DT_PPC64_OPDSZ:
8930 s = bfd_get_section_by_name (output_bfd, ".opd");
8931 if (s == NULL)
8932 continue;
8933 dyn.d_un.d_val = s->size;
8934 break;
8935
8936 case DT_PLTGOT:
8937 s = htab->plt;
8938 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8939 break;
8940
8941 case DT_JMPREL:
8942 s = htab->relplt;
8943 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8944 break;
8945
8946 case DT_PLTRELSZ:
8947 dyn.d_un.d_val = htab->relplt->size;
8948 break;
8949
8950 case DT_RELASZ:
8951 /* Don't count procedure linkage table relocs in the
8952 overall reloc count. */
8953 s = htab->relplt;
8954 if (s == NULL)
8955 continue;
8956 dyn.d_un.d_val -= s->size;
8957 break;
8958
8959 case DT_RELA:
8960 /* We may not be using the standard ELF linker script.
8961 If .rela.plt is the first .rela section, we adjust
8962 DT_RELA to not include it. */
8963 s = htab->relplt;
8964 if (s == NULL)
8965 continue;
8966 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8967 continue;
8968 dyn.d_un.d_ptr += s->size;
8969 break;
8970 }
8971
8972 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8973 }
8974 }
8975
8976 if (htab->got != NULL && htab->got->size != 0)
8977 {
8978 /* Fill in the first entry in the global offset table.
8979 We use it to hold the link-time TOCbase. */
8980 bfd_put_64 (output_bfd,
8981 elf_gp (output_bfd) + TOC_BASE_OFF,
8982 htab->got->contents);
8983
8984 /* Set .got entry size. */
8985 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
8986 }
8987
8988 if (htab->plt != NULL && htab->plt->size != 0)
8989 {
8990 /* Set .plt entry size. */
8991 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
8992 = PLT_ENTRY_SIZE;
8993 }
8994
8995 /* We need to handle writing out multiple GOT sections ourselves,
8996 since we didn't add them to DYNOBJ. */
8997 while ((dynobj = dynobj->link_next) != NULL)
8998 {
8999 asection *s;
9000 s = ppc64_elf_tdata (dynobj)->got;
9001 if (s != NULL
9002 && s->size != 0
9003 && s->output_section != bfd_abs_section_ptr
9004 && !bfd_set_section_contents (output_bfd, s->output_section,
9005 s->contents, s->output_offset,
9006 s->size))
9007 return FALSE;
9008 s = ppc64_elf_tdata (dynobj)->relgot;
9009 if (s != NULL
9010 && s->size != 0
9011 && s->output_section != bfd_abs_section_ptr
9012 && !bfd_set_section_contents (output_bfd, s->output_section,
9013 s->contents, s->output_offset,
9014 s->size))
9015 return FALSE;
9016 }
9017
9018 return TRUE;
9019}
9020
9021#include "elf64-target.h"
GDB Binutils - Deliverables
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