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* elf32-arm.h (elf32_arm_check_relocs): Revert part of 2004-01-13
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
5 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
21 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23 /* The 64-bit PowerPC ELF ABI may be found at
24 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
25 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
26
27 #include "bfd.h"
28 #include "sysdep.h"
29 #include "bfdlink.h"
30 #include "libbfd.h"
31 #include "elf-bfd.h"
32 #include "elf/ppc64.h"
33 #include "elf64-ppc.h"
34
35 static bfd_reloc_status_type ppc64_elf_ha_reloc
36 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
37 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
38 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
39 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
41 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
43 static bfd_reloc_status_type ppc64_elf_toc_reloc
44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
45 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
47 static bfd_reloc_status_type ppc64_elf_toc64_reloc
48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
49 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
51
52
53 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
54 #define TARGET_LITTLE_NAME "elf64-powerpcle"
55 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
56 #define TARGET_BIG_NAME "elf64-powerpc"
57 #define ELF_ARCH bfd_arch_powerpc
58 #define ELF_MACHINE_CODE EM_PPC64
59 #define ELF_MAXPAGESIZE 0x10000
60 #define elf_info_to_howto ppc64_elf_info_to_howto
61
62 #define elf_backend_want_got_sym 0
63 #define elf_backend_want_plt_sym 0
64 #define elf_backend_plt_alignment 3
65 #define elf_backend_plt_not_loaded 1
66 #define elf_backend_got_symbol_offset 0
67 #define elf_backend_got_header_size 8
68 #define elf_backend_can_gc_sections 1
69 #define elf_backend_can_refcount 1
70 #define elf_backend_rela_normal 1
71
72 #define bfd_elf64_mkobject ppc64_elf_mkobject
73 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
74 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
75 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
76 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
77 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
78
79 #define elf_backend_object_p ppc64_elf_object_p
80 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
81 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
82 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
83 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
84 #define elf_backend_check_relocs ppc64_elf_check_relocs
85 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
86 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
87 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
88 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
89 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
90 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
91 #define elf_backend_relocate_section ppc64_elf_relocate_section
92 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
93 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
94 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
95 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
96 #define elf_backend_special_sections ppc64_elf_special_sections
97
98 /* The name of the dynamic interpreter. This is put in the .interp
99 section. */
100 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
101
102 /* The size in bytes of an entry in the procedure linkage table. */
103 #define PLT_ENTRY_SIZE 24
104
105 /* The initial size of the plt reserved for the dynamic linker. */
106 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
107
108 /* TOC base pointers offset from start of TOC. */
109 #define TOC_BASE_OFF 0x8000
110
111 /* Offset of tp and dtp pointers from start of TLS block. */
112 #define TP_OFFSET 0x7000
113 #define DTP_OFFSET 0x8000
114
115 /* .plt call stub instructions. The normal stub is like this, but
116 sometimes the .plt entry crosses a 64k boundary and we need to
117 insert an addis to adjust r12. */
118 #define PLT_CALL_STUB_SIZE (7*4)
119 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
120 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
121 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
122 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
123 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
124 /* ld %r11,xxx+16@l(%r12) */
125 #define BCTR 0x4e800420 /* bctr */
126
127
128 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
129 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
130
131 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
132
133 /* glink call stub instructions. We enter with the index in R0, and the
134 address of glink entry in CTR. From that, we can calculate PLT0. */
135 #define GLINK_CALL_STUB_SIZE (16*4)
136 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
137 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
138 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
139 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
140 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
141 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
142 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
143 /* sub %r12,%r12,%r11 */
144 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
145 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
146 /* ld %r11,xxx@l(%r12) */
147 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
148 /* ld %r2,8(%r12) */
149 /* mtctr %r11 */
150 /* ld %r11,16(%r12) */
151 /* bctr */
152
153 /* Pad with this. */
154 #define NOP 0x60000000
155
156 /* Some other nops. */
157 #define CROR_151515 0x4def7b82
158 #define CROR_313131 0x4ffffb82
159
160 /* .glink entries for the first 32k functions are two instructions. */
161 #define LI_R0_0 0x38000000 /* li %r0,0 */
162 #define B_DOT 0x48000000 /* b . */
163
164 /* After that, we need two instructions to load the index, followed by
165 a branch. */
166 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
167 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
168
169 /* Instructions to save and restore floating point regs. */
170 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
171 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
172 #define BLR 0x4e800020 /* blr */
173
174 /* Since .opd is an array of descriptors and each entry will end up
175 with identical R_PPC64_RELATIVE relocs, there is really no need to
176 propagate .opd relocs; The dynamic linker should be taught to
177 relocate .opd without reloc entries. */
178 #ifndef NO_OPD_RELOCS
179 #define NO_OPD_RELOCS 0
180 #endif
181 \f
182 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
183
184 /* Relocation HOWTO's. */
185 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
186
187 static reloc_howto_type ppc64_elf_howto_raw[] = {
188 /* This reloc does nothing. */
189 HOWTO (R_PPC64_NONE, /* type */
190 0, /* rightshift */
191 2, /* size (0 = byte, 1 = short, 2 = long) */
192 32, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_dont, /* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_PPC64_NONE", /* name */
198 FALSE, /* partial_inplace */
199 0, /* src_mask */
200 0, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 /* A standard 32 bit relocation. */
204 HOWTO (R_PPC64_ADDR32, /* type */
205 0, /* rightshift */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
207 32, /* bitsize */
208 FALSE, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_bitfield, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_ADDR32", /* name */
213 FALSE, /* partial_inplace */
214 0, /* src_mask */
215 0xffffffff, /* dst_mask */
216 FALSE), /* pcrel_offset */
217
218 /* An absolute 26 bit branch; the lower two bits must be zero.
219 FIXME: we don't check that, we just clear them. */
220 HOWTO (R_PPC64_ADDR24, /* type */
221 0, /* rightshift */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
223 26, /* bitsize */
224 FALSE, /* pc_relative */
225 0, /* bitpos */
226 complain_overflow_bitfield, /* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC64_ADDR24", /* name */
229 FALSE, /* partial_inplace */
230 0, /* src_mask */
231 0x03fffffc, /* dst_mask */
232 FALSE), /* pcrel_offset */
233
234 /* A standard 16 bit relocation. */
235 HOWTO (R_PPC64_ADDR16, /* type */
236 0, /* rightshift */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
238 16, /* bitsize */
239 FALSE, /* pc_relative */
240 0, /* bitpos */
241 complain_overflow_bitfield, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC64_ADDR16", /* name */
244 FALSE, /* partial_inplace */
245 0, /* src_mask */
246 0xffff, /* dst_mask */
247 FALSE), /* pcrel_offset */
248
249 /* A 16 bit relocation without overflow. */
250 HOWTO (R_PPC64_ADDR16_LO, /* type */
251 0, /* rightshift */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
254 FALSE, /* pc_relative */
255 0, /* bitpos */
256 complain_overflow_dont,/* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16_LO", /* name */
259 FALSE, /* partial_inplace */
260 0, /* src_mask */
261 0xffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
263
264 /* Bits 16-31 of an address. */
265 HOWTO (R_PPC64_ADDR16_HI, /* type */
266 16, /* rightshift */
267 1, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
269 FALSE, /* pc_relative */
270 0, /* bitpos */
271 complain_overflow_dont, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC64_ADDR16_HI", /* name */
274 FALSE, /* partial_inplace */
275 0, /* src_mask */
276 0xffff, /* dst_mask */
277 FALSE), /* pcrel_offset */
278
279 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
280 bits, treated as a signed number, is negative. */
281 HOWTO (R_PPC64_ADDR16_HA, /* type */
282 16, /* rightshift */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
285 FALSE, /* pc_relative */
286 0, /* bitpos */
287 complain_overflow_dont, /* complain_on_overflow */
288 ppc64_elf_ha_reloc, /* special_function */
289 "R_PPC64_ADDR16_HA", /* name */
290 FALSE, /* partial_inplace */
291 0, /* src_mask */
292 0xffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
294
295 /* An absolute 16 bit branch; the lower two bits must be zero.
296 FIXME: we don't check that, we just clear them. */
297 HOWTO (R_PPC64_ADDR14, /* type */
298 0, /* rightshift */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
300 16, /* bitsize */
301 FALSE, /* pc_relative */
302 0, /* bitpos */
303 complain_overflow_bitfield, /* complain_on_overflow */
304 bfd_elf_generic_reloc, /* special_function */
305 "R_PPC64_ADDR14", /* name */
306 FALSE, /* partial_inplace */
307 0, /* src_mask */
308 0x0000fffc, /* dst_mask */
309 FALSE), /* pcrel_offset */
310
311 /* An absolute 16 bit branch, for which bit 10 should be set to
312 indicate that the branch is expected to be taken. The lower two
313 bits must be zero. */
314 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
315 0, /* rightshift */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
317 16, /* bitsize */
318 FALSE, /* pc_relative */
319 0, /* bitpos */
320 complain_overflow_bitfield, /* complain_on_overflow */
321 ppc64_elf_brtaken_reloc, /* special_function */
322 "R_PPC64_ADDR14_BRTAKEN",/* name */
323 FALSE, /* partial_inplace */
324 0, /* src_mask */
325 0x0000fffc, /* dst_mask */
326 FALSE), /* pcrel_offset */
327
328 /* An absolute 16 bit branch, for which bit 10 should be set to
329 indicate that the branch is not expected to be taken. The lower
330 two bits must be zero. */
331 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
332 0, /* rightshift */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
334 16, /* bitsize */
335 FALSE, /* pc_relative */
336 0, /* bitpos */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 ppc64_elf_brtaken_reloc, /* special_function */
339 "R_PPC64_ADDR14_BRNTAKEN",/* name */
340 FALSE, /* partial_inplace */
341 0, /* src_mask */
342 0x0000fffc, /* dst_mask */
343 FALSE), /* pcrel_offset */
344
345 /* A relative 26 bit branch; the lower two bits must be zero. */
346 HOWTO (R_PPC64_REL24, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 26, /* bitsize */
350 TRUE, /* pc_relative */
351 0, /* bitpos */
352 complain_overflow_signed, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_PPC64_REL24", /* name */
355 FALSE, /* partial_inplace */
356 0, /* src_mask */
357 0x03fffffc, /* dst_mask */
358 TRUE), /* pcrel_offset */
359
360 /* A relative 16 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL14, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
365 TRUE, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 bfd_elf_generic_reloc, /* special_function */
369 "R_PPC64_REL14", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0x0000fffc, /* dst_mask */
373 TRUE), /* pcrel_offset */
374
375 /* A relative 16 bit branch. Bit 10 should be set to indicate that
376 the branch is expected to be taken. The lower two bits must be
377 zero. */
378 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
379 0, /* rightshift */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
381 16, /* bitsize */
382 TRUE, /* pc_relative */
383 0, /* bitpos */
384 complain_overflow_signed, /* complain_on_overflow */
385 ppc64_elf_brtaken_reloc, /* special_function */
386 "R_PPC64_REL14_BRTAKEN", /* name */
387 FALSE, /* partial_inplace */
388 0, /* src_mask */
389 0x0000fffc, /* dst_mask */
390 TRUE), /* pcrel_offset */
391
392 /* A relative 16 bit branch. Bit 10 should be set to indicate that
393 the branch is not expected to be taken. The lower two bits must
394 be zero. */
395 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
396 0, /* rightshift */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
398 16, /* bitsize */
399 TRUE, /* pc_relative */
400 0, /* bitpos */
401 complain_overflow_signed, /* complain_on_overflow */
402 ppc64_elf_brtaken_reloc, /* special_function */
403 "R_PPC64_REL14_BRNTAKEN",/* name */
404 FALSE, /* partial_inplace */
405 0, /* src_mask */
406 0x0000fffc, /* dst_mask */
407 TRUE), /* pcrel_offset */
408
409 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
410 symbol. */
411 HOWTO (R_PPC64_GOT16, /* type */
412 0, /* rightshift */
413 1, /* size (0 = byte, 1 = short, 2 = long) */
414 16, /* bitsize */
415 FALSE, /* pc_relative */
416 0, /* bitpos */
417 complain_overflow_signed, /* complain_on_overflow */
418 ppc64_elf_unhandled_reloc, /* special_function */
419 "R_PPC64_GOT16", /* name */
420 FALSE, /* partial_inplace */
421 0, /* src_mask */
422 0xffff, /* dst_mask */
423 FALSE), /* pcrel_offset */
424
425 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
426 the symbol. */
427 HOWTO (R_PPC64_GOT16_LO, /* type */
428 0, /* rightshift */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
430 16, /* bitsize */
431 FALSE, /* pc_relative */
432 0, /* bitpos */
433 complain_overflow_dont, /* complain_on_overflow */
434 ppc64_elf_unhandled_reloc, /* special_function */
435 "R_PPC64_GOT16_LO", /* name */
436 FALSE, /* partial_inplace */
437 0, /* src_mask */
438 0xffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
440
441 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
442 the symbol. */
443 HOWTO (R_PPC64_GOT16_HI, /* type */
444 16, /* rightshift */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
446 16, /* bitsize */
447 FALSE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_dont,/* complain_on_overflow */
450 ppc64_elf_unhandled_reloc, /* special_function */
451 "R_PPC64_GOT16_HI", /* name */
452 FALSE, /* partial_inplace */
453 0, /* src_mask */
454 0xffff, /* dst_mask */
455 FALSE), /* pcrel_offset */
456
457 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
458 the symbol. */
459 HOWTO (R_PPC64_GOT16_HA, /* type */
460 16, /* rightshift */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
462 16, /* bitsize */
463 FALSE, /* pc_relative */
464 0, /* bitpos */
465 complain_overflow_dont,/* complain_on_overflow */
466 ppc64_elf_unhandled_reloc, /* special_function */
467 "R_PPC64_GOT16_HA", /* name */
468 FALSE, /* partial_inplace */
469 0, /* src_mask */
470 0xffff, /* dst_mask */
471 FALSE), /* pcrel_offset */
472
473 /* This is used only by the dynamic linker. The symbol should exist
474 both in the object being run and in some shared library. The
475 dynamic linker copies the data addressed by the symbol from the
476 shared library into the object, because the object being
477 run has to have the data at some particular address. */
478 HOWTO (R_PPC64_COPY, /* type */
479 0, /* rightshift */
480 0, /* this one is variable size */
481 0, /* bitsize */
482 FALSE, /* pc_relative */
483 0, /* bitpos */
484 complain_overflow_dont, /* complain_on_overflow */
485 ppc64_elf_unhandled_reloc, /* special_function */
486 "R_PPC64_COPY", /* name */
487 FALSE, /* partial_inplace */
488 0, /* src_mask */
489 0, /* dst_mask */
490 FALSE), /* pcrel_offset */
491
492 /* Like R_PPC64_ADDR64, but used when setting global offset table
493 entries. */
494 HOWTO (R_PPC64_GLOB_DAT, /* type */
495 0, /* rightshift */
496 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
497 64, /* bitsize */
498 FALSE, /* pc_relative */
499 0, /* bitpos */
500 complain_overflow_dont, /* complain_on_overflow */
501 ppc64_elf_unhandled_reloc, /* special_function */
502 "R_PPC64_GLOB_DAT", /* name */
503 FALSE, /* partial_inplace */
504 0, /* src_mask */
505 ONES (64), /* dst_mask */
506 FALSE), /* pcrel_offset */
507
508 /* Created by the link editor. Marks a procedure linkage table
509 entry for a symbol. */
510 HOWTO (R_PPC64_JMP_SLOT, /* type */
511 0, /* rightshift */
512 0, /* size (0 = byte, 1 = short, 2 = long) */
513 0, /* bitsize */
514 FALSE, /* pc_relative */
515 0, /* bitpos */
516 complain_overflow_dont, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc, /* special_function */
518 "R_PPC64_JMP_SLOT", /* name */
519 FALSE, /* partial_inplace */
520 0, /* src_mask */
521 0, /* dst_mask */
522 FALSE), /* pcrel_offset */
523
524 /* Used only by the dynamic linker. When the object is run, this
525 doubleword64 is set to the load address of the object, plus the
526 addend. */
527 HOWTO (R_PPC64_RELATIVE, /* type */
528 0, /* rightshift */
529 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
530 64, /* bitsize */
531 FALSE, /* pc_relative */
532 0, /* bitpos */
533 complain_overflow_dont, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC64_RELATIVE", /* name */
536 FALSE, /* partial_inplace */
537 0, /* src_mask */
538 ONES (64), /* dst_mask */
539 FALSE), /* pcrel_offset */
540
541 /* Like R_PPC64_ADDR32, but may be unaligned. */
542 HOWTO (R_PPC64_UADDR32, /* type */
543 0, /* rightshift */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
545 32, /* bitsize */
546 FALSE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_bitfield, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_UADDR32", /* name */
551 FALSE, /* partial_inplace */
552 0, /* src_mask */
553 0xffffffff, /* dst_mask */
554 FALSE), /* pcrel_offset */
555
556 /* Like R_PPC64_ADDR16, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR16, /* type */
558 0, /* rightshift */
559 1, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 FALSE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC64_UADDR16", /* name */
566 FALSE, /* partial_inplace */
567 0, /* src_mask */
568 0xffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
570
571 /* 32-bit PC relative. */
572 HOWTO (R_PPC64_REL32, /* type */
573 0, /* rightshift */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
575 32, /* bitsize */
576 TRUE, /* pc_relative */
577 0, /* bitpos */
578 /* FIXME: Verify. Was complain_overflow_bitfield. */
579 complain_overflow_signed, /* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_PPC64_REL32", /* name */
582 FALSE, /* partial_inplace */
583 0, /* src_mask */
584 0xffffffff, /* dst_mask */
585 TRUE), /* pcrel_offset */
586
587 /* 32-bit relocation to the symbol's procedure linkage table. */
588 HOWTO (R_PPC64_PLT32, /* type */
589 0, /* rightshift */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
591 32, /* bitsize */
592 FALSE, /* pc_relative */
593 0, /* bitpos */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 ppc64_elf_unhandled_reloc, /* special_function */
596 "R_PPC64_PLT32", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffffffff, /* dst_mask */
600 FALSE), /* pcrel_offset */
601
602 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
603 FIXME: R_PPC64_PLTREL32 not supported. */
604 HOWTO (R_PPC64_PLTREL32, /* type */
605 0, /* rightshift */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
607 32, /* bitsize */
608 TRUE, /* pc_relative */
609 0, /* bitpos */
610 complain_overflow_signed, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_PPC64_PLTREL32", /* name */
613 FALSE, /* partial_inplace */
614 0, /* src_mask */
615 0xffffffff, /* dst_mask */
616 TRUE), /* pcrel_offset */
617
618 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
619 the symbol. */
620 HOWTO (R_PPC64_PLT16_LO, /* type */
621 0, /* rightshift */
622 1, /* size (0 = byte, 1 = short, 2 = long) */
623 16, /* bitsize */
624 FALSE, /* pc_relative */
625 0, /* bitpos */
626 complain_overflow_dont, /* complain_on_overflow */
627 ppc64_elf_unhandled_reloc, /* special_function */
628 "R_PPC64_PLT16_LO", /* name */
629 FALSE, /* partial_inplace */
630 0, /* src_mask */
631 0xffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
633
634 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
635 the symbol. */
636 HOWTO (R_PPC64_PLT16_HI, /* type */
637 16, /* rightshift */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
639 16, /* bitsize */
640 FALSE, /* pc_relative */
641 0, /* bitpos */
642 complain_overflow_dont, /* complain_on_overflow */
643 ppc64_elf_unhandled_reloc, /* special_function */
644 "R_PPC64_PLT16_HI", /* name */
645 FALSE, /* partial_inplace */
646 0, /* src_mask */
647 0xffff, /* dst_mask */
648 FALSE), /* pcrel_offset */
649
650 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
651 the symbol. */
652 HOWTO (R_PPC64_PLT16_HA, /* type */
653 16, /* rightshift */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
655 16, /* bitsize */
656 FALSE, /* pc_relative */
657 0, /* bitpos */
658 complain_overflow_dont, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc, /* special_function */
660 "R_PPC64_PLT16_HA", /* name */
661 FALSE, /* partial_inplace */
662 0, /* src_mask */
663 0xffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
665
666 /* 16-bit section relative relocation. */
667 HOWTO (R_PPC64_SECTOFF, /* type */
668 0, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_bitfield, /* complain_on_overflow */
674 ppc64_elf_sectoff_reloc, /* special_function */
675 "R_PPC64_SECTOFF", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* Like R_PPC64_SECTOFF, but no overflow warning. */
682 HOWTO (R_PPC64_SECTOFF_LO, /* type */
683 0, /* rightshift */
684 1, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
686 FALSE, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_dont, /* complain_on_overflow */
689 ppc64_elf_sectoff_reloc, /* special_function */
690 "R_PPC64_SECTOFF_LO", /* name */
691 FALSE, /* partial_inplace */
692 0, /* src_mask */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
695
696 /* 16-bit upper half section relative relocation. */
697 HOWTO (R_PPC64_SECTOFF_HI, /* type */
698 16, /* rightshift */
699 1, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
701 FALSE, /* pc_relative */
702 0, /* bitpos */
703 complain_overflow_dont, /* complain_on_overflow */
704 ppc64_elf_sectoff_reloc, /* special_function */
705 "R_PPC64_SECTOFF_HI", /* name */
706 FALSE, /* partial_inplace */
707 0, /* src_mask */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
710
711 /* 16-bit upper half adjusted section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HA, /* type */
713 16, /* rightshift */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
715 16, /* bitsize */
716 FALSE, /* pc_relative */
717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
719 ppc64_elf_sectoff_ha_reloc, /* special_function */
720 "R_PPC64_SECTOFF_HA", /* name */
721 FALSE, /* partial_inplace */
722 0, /* src_mask */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
725
726 /* Like R_PPC64_REL24 without touching the two least significant bits. */
727 HOWTO (R_PPC64_REL30, /* type */
728 2, /* rightshift */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
730 30, /* bitsize */
731 TRUE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_PPC64_REL30", /* name */
736 FALSE, /* partial_inplace */
737 0, /* src_mask */
738 0xfffffffc, /* dst_mask */
739 TRUE), /* pcrel_offset */
740
741 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
742
743 /* A standard 64-bit relocation. */
744 HOWTO (R_PPC64_ADDR64, /* type */
745 0, /* rightshift */
746 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
747 64, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_dont, /* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_PPC64_ADDR64", /* name */
753 FALSE, /* partial_inplace */
754 0, /* src_mask */
755 ONES (64), /* dst_mask */
756 FALSE), /* pcrel_offset */
757
758 /* The bits 32-47 of an address. */
759 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
760 32, /* rightshift */
761 1, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_PPC64_ADDR16_HIGHER", /* name */
768 FALSE, /* partial_inplace */
769 0, /* src_mask */
770 0xffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* The bits 32-47 of an address, plus 1 if the contents of the low
774 16 bits, treated as a signed number, is negative. */
775 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
776 32, /* rightshift */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
778 16, /* bitsize */
779 FALSE, /* pc_relative */
780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 ppc64_elf_ha_reloc, /* special_function */
783 "R_PPC64_ADDR16_HIGHERA", /* name */
784 FALSE, /* partial_inplace */
785 0, /* src_mask */
786 0xffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
788
789 /* The bits 48-63 of an address. */
790 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
791 48, /* rightshift */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
798 "R_PPC64_ADDR16_HIGHEST", /* name */
799 FALSE, /* partial_inplace */
800 0, /* src_mask */
801 0xffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 /* The bits 48-63 of an address, plus 1 if the contents of the low
805 16 bits, treated as a signed number, is negative. */
806 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
807 48, /* rightshift */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
809 16, /* bitsize */
810 FALSE, /* pc_relative */
811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 ppc64_elf_ha_reloc, /* special_function */
814 "R_PPC64_ADDR16_HIGHESTA", /* name */
815 FALSE, /* partial_inplace */
816 0, /* src_mask */
817 0xffff, /* dst_mask */
818 FALSE), /* pcrel_offset */
819
820 /* Like ADDR64, but may be unaligned. */
821 HOWTO (R_PPC64_UADDR64, /* type */
822 0, /* rightshift */
823 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
824 64, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 bfd_elf_generic_reloc, /* special_function */
829 "R_PPC64_UADDR64", /* name */
830 FALSE, /* partial_inplace */
831 0, /* src_mask */
832 ONES (64), /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* 64-bit relative relocation. */
836 HOWTO (R_PPC64_REL64, /* type */
837 0, /* rightshift */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
839 64, /* bitsize */
840 TRUE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_REL64", /* name */
845 FALSE, /* partial_inplace */
846 0, /* src_mask */
847 ONES (64), /* dst_mask */
848 TRUE), /* pcrel_offset */
849
850 /* 64-bit relocation to the symbol's procedure linkage table. */
851 HOWTO (R_PPC64_PLT64, /* type */
852 0, /* rightshift */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 64, /* bitsize */
855 FALSE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 ppc64_elf_unhandled_reloc, /* special_function */
859 "R_PPC64_PLT64", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 ONES (64), /* dst_mask */
863 FALSE), /* pcrel_offset */
864
865 /* 64-bit PC relative relocation to the symbol's procedure linkage
866 table. */
867 /* FIXME: R_PPC64_PLTREL64 not supported. */
868 HOWTO (R_PPC64_PLTREL64, /* type */
869 0, /* rightshift */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 64, /* bitsize */
872 TRUE, /* pc_relative */
873 0, /* bitpos */
874 complain_overflow_dont, /* complain_on_overflow */
875 ppc64_elf_unhandled_reloc, /* special_function */
876 "R_PPC64_PLTREL64", /* name */
877 FALSE, /* partial_inplace */
878 0, /* src_mask */
879 ONES (64), /* dst_mask */
880 TRUE), /* pcrel_offset */
881
882 /* 16 bit TOC-relative relocation. */
883
884 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
885 HOWTO (R_PPC64_TOC16, /* type */
886 0, /* rightshift */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
888 16, /* bitsize */
889 FALSE, /* pc_relative */
890 0, /* bitpos */
891 complain_overflow_signed, /* complain_on_overflow */
892 ppc64_elf_toc_reloc, /* special_function */
893 "R_PPC64_TOC16", /* name */
894 FALSE, /* partial_inplace */
895 0, /* src_mask */
896 0xffff, /* dst_mask */
897 FALSE), /* pcrel_offset */
898
899 /* 16 bit TOC-relative relocation without overflow. */
900
901 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
902 HOWTO (R_PPC64_TOC16_LO, /* type */
903 0, /* rightshift */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
905 16, /* bitsize */
906 FALSE, /* pc_relative */
907 0, /* bitpos */
908 complain_overflow_dont, /* complain_on_overflow */
909 ppc64_elf_toc_reloc, /* special_function */
910 "R_PPC64_TOC16_LO", /* name */
911 FALSE, /* partial_inplace */
912 0, /* src_mask */
913 0xffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
915
916 /* 16 bit TOC-relative relocation, high 16 bits. */
917
918 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
919 HOWTO (R_PPC64_TOC16_HI, /* type */
920 16, /* rightshift */
921 1, /* size (0 = byte, 1 = short, 2 = long) */
922 16, /* bitsize */
923 FALSE, /* pc_relative */
924 0, /* bitpos */
925 complain_overflow_dont, /* complain_on_overflow */
926 ppc64_elf_toc_reloc, /* special_function */
927 "R_PPC64_TOC16_HI", /* name */
928 FALSE, /* partial_inplace */
929 0, /* src_mask */
930 0xffff, /* dst_mask */
931 FALSE), /* pcrel_offset */
932
933 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
934 contents of the low 16 bits, treated as a signed number, is
935 negative. */
936
937 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
938 HOWTO (R_PPC64_TOC16_HA, /* type */
939 16, /* rightshift */
940 1, /* size (0 = byte, 1 = short, 2 = long) */
941 16, /* bitsize */
942 FALSE, /* pc_relative */
943 0, /* bitpos */
944 complain_overflow_dont, /* complain_on_overflow */
945 ppc64_elf_toc_ha_reloc, /* special_function */
946 "R_PPC64_TOC16_HA", /* name */
947 FALSE, /* partial_inplace */
948 0, /* src_mask */
949 0xffff, /* dst_mask */
950 FALSE), /* pcrel_offset */
951
952 /* 64-bit relocation; insert value of TOC base (.TOC.). */
953
954 /* R_PPC64_TOC 51 doubleword64 .TOC. */
955 HOWTO (R_PPC64_TOC, /* type */
956 0, /* rightshift */
957 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
958 64, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_bitfield, /* complain_on_overflow */
962 ppc64_elf_toc64_reloc, /* special_function */
963 "R_PPC64_TOC", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 ONES (64), /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Like R_PPC64_GOT16, but also informs the link editor that the
970 value to relocate may (!) refer to a PLT entry which the link
971 editor (a) may replace with the symbol value. If the link editor
972 is unable to fully resolve the symbol, it may (b) create a PLT
973 entry and store the address to the new PLT entry in the GOT.
974 This permits lazy resolution of function symbols at run time.
975 The link editor may also skip all of this and just (c) emit a
976 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
977 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
978 HOWTO (R_PPC64_PLTGOT16, /* type */
979 0, /* rightshift */
980 1, /* size (0 = byte, 1 = short, 2 = long) */
981 16, /* bitsize */
982 FALSE, /* pc_relative */
983 0, /* bitpos */
984 complain_overflow_signed, /* complain_on_overflow */
985 ppc64_elf_unhandled_reloc, /* special_function */
986 "R_PPC64_PLTGOT16", /* name */
987 FALSE, /* partial_inplace */
988 0, /* src_mask */
989 0xffff, /* dst_mask */
990 FALSE), /* pcrel_offset */
991
992 /* Like R_PPC64_PLTGOT16, but without overflow. */
993 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
994 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
995 0, /* rightshift */
996 1, /* size (0 = byte, 1 = short, 2 = long) */
997 16, /* bitsize */
998 FALSE, /* pc_relative */
999 0, /* bitpos */
1000 complain_overflow_dont, /* complain_on_overflow */
1001 ppc64_elf_unhandled_reloc, /* special_function */
1002 "R_PPC64_PLTGOT16_LO", /* name */
1003 FALSE, /* partial_inplace */
1004 0, /* src_mask */
1005 0xffff, /* dst_mask */
1006 FALSE), /* pcrel_offset */
1007
1008 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1009 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1011 16, /* rightshift */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 16, /* bitsize */
1014 FALSE, /* pc_relative */
1015 0, /* bitpos */
1016 complain_overflow_dont, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc, /* special_function */
1018 "R_PPC64_PLTGOT16_HI", /* name */
1019 FALSE, /* partial_inplace */
1020 0, /* src_mask */
1021 0xffff, /* dst_mask */
1022 FALSE), /* pcrel_offset */
1023
1024 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1025 1 if the contents of the low 16 bits, treated as a signed number,
1026 is negative. */
1027 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1028 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1031 16, /* bitsize */
1032 FALSE, /* pc_relative */
1033 0, /* bitpos */
1034 complain_overflow_dont,/* complain_on_overflow */
1035 ppc64_elf_unhandled_reloc, /* special_function */
1036 "R_PPC64_PLTGOT16_HA", /* name */
1037 FALSE, /* partial_inplace */
1038 0, /* src_mask */
1039 0xffff, /* dst_mask */
1040 FALSE), /* pcrel_offset */
1041
1042 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1043 HOWTO (R_PPC64_ADDR16_DS, /* type */
1044 0, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_bitfield, /* complain_on_overflow */
1050 bfd_elf_generic_reloc, /* special_function */
1051 "R_PPC64_ADDR16_DS", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xfffc, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1059 0, /* rightshift */
1060 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_LO_DS",/* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_GOT16_DS, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_signed, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc, /* special_function */
1081 "R_PPC64_GOT16_DS", /* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1089 0, /* rightshift */
1090 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_LO_DS", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1104 0, /* rightshift */
1105 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 ppc64_elf_unhandled_reloc, /* special_function */
1111 "R_PPC64_PLT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1119 0, /* rightshift */
1120 1, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_bitfield, /* complain_on_overflow */
1125 ppc64_elf_sectoff_reloc, /* special_function */
1126 "R_PPC64_SECTOFF_DS", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1134 0, /* rightshift */
1135 1, /* size (0 = byte, 1 = short, 2 = long) */
1136 16, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_dont, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_LO_DS",/* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_TOC16_DS, /* type */
1149 0, /* rightshift */
1150 1, /* size (0 = byte, 1 = short, 2 = long) */
1151 16, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_signed, /* complain_on_overflow */
1155 ppc64_elf_toc_reloc, /* special_function */
1156 "R_PPC64_TOC16_DS", /* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1164 0, /* rightshift */
1165 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 16, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_LO_DS", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1178 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1179 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1180 0, /* rightshift */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1182 16, /* bitsize */
1183 FALSE, /* pc_relative */
1184 0, /* bitpos */
1185 complain_overflow_signed, /* complain_on_overflow */
1186 ppc64_elf_unhandled_reloc, /* special_function */
1187 "R_PPC64_PLTGOT16_DS", /* name */
1188 FALSE, /* partial_inplace */
1189 0, /* src_mask */
1190 0xfffc, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1192
1193 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1194 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1195 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1196 0, /* rightshift */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 16, /* bitsize */
1199 FALSE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 ppc64_elf_unhandled_reloc, /* special_function */
1203 "R_PPC64_PLTGOT16_LO_DS",/* name */
1204 FALSE, /* partial_inplace */
1205 0, /* src_mask */
1206 0xfffc, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1208
1209 /* Marker reloc for TLS. */
1210 HOWTO (R_PPC64_TLS,
1211 0, /* rightshift */
1212 2, /* size (0 = byte, 1 = short, 2 = long) */
1213 32, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 bfd_elf_generic_reloc, /* special_function */
1218 "R_PPC64_TLS", /* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* Computes the load module index of the load module that contains the
1225 definition of its TLS sym. */
1226 HOWTO (R_PPC64_DTPMOD64,
1227 0, /* rightshift */
1228 4, /* size (0 = byte, 1 = short, 2 = long) */
1229 64, /* bitsize */
1230 FALSE, /* pc_relative */
1231 0, /* bitpos */
1232 complain_overflow_dont, /* complain_on_overflow */
1233 ppc64_elf_unhandled_reloc, /* special_function */
1234 "R_PPC64_DTPMOD64", /* name */
1235 FALSE, /* partial_inplace */
1236 0, /* src_mask */
1237 ONES (64), /* dst_mask */
1238 FALSE), /* pcrel_offset */
1239
1240 /* Computes a dtv-relative displacement, the difference between the value
1241 of sym+add and the base address of the thread-local storage block that
1242 contains the definition of sym, minus 0x8000. */
1243 HOWTO (R_PPC64_DTPREL64,
1244 0, /* rightshift */
1245 4, /* size (0 = byte, 1 = short, 2 = long) */
1246 64, /* bitsize */
1247 FALSE, /* pc_relative */
1248 0, /* bitpos */
1249 complain_overflow_dont, /* complain_on_overflow */
1250 ppc64_elf_unhandled_reloc, /* special_function */
1251 "R_PPC64_DTPREL64", /* name */
1252 FALSE, /* partial_inplace */
1253 0, /* src_mask */
1254 ONES (64), /* dst_mask */
1255 FALSE), /* pcrel_offset */
1256
1257 /* A 16 bit dtprel reloc. */
1258 HOWTO (R_PPC64_DTPREL16,
1259 0, /* rightshift */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1261 16, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_signed, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL16", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 0xffff, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* Like DTPREL16, but no overflow. */
1273 HOWTO (R_PPC64_DTPREL16_LO,
1274 0, /* rightshift */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1276 16, /* bitsize */
1277 FALSE, /* pc_relative */
1278 0, /* bitpos */
1279 complain_overflow_dont, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16_LO", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1288 HOWTO (R_PPC64_DTPREL16_HI,
1289 16, /* rightshift */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1291 16, /* bitsize */
1292 FALSE, /* pc_relative */
1293 0, /* bitpos */
1294 complain_overflow_dont, /* complain_on_overflow */
1295 ppc64_elf_unhandled_reloc, /* special_function */
1296 "R_PPC64_DTPREL16_HI", /* name */
1297 FALSE, /* partial_inplace */
1298 0, /* src_mask */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1301
1302 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HA,
1304 16, /* rightshift */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1306 16, /* bitsize */
1307 FALSE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc, /* special_function */
1311 "R_PPC64_DTPREL16_HA", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HIGHER,
1319 32, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 16, /* bitsize */
1322 FALSE, /* pc_relative */
1323 0, /* bitpos */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc, /* special_function */
1326 "R_PPC64_DTPREL16_HIGHER", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1331
1332 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1334 32, /* rightshift */
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_dont, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc, /* special_function */
1341 "R_PPC64_DTPREL16_HIGHERA", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1349 48, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_dont, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc, /* special_function */
1356 "R_PPC64_DTPREL16_HIGHEST", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1364 48, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_dont, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc, /* special_function */
1371 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Like DTPREL16, but for insns with a DS field. */
1378 HOWTO (R_PPC64_DTPREL16_DS,
1379 0, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_signed, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_DS", /* name */
1387 FALSE, /* partial_inplace */
1388 0, /* src_mask */
1389 0xfffc, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* Like DTPREL16_DS, but no overflow. */
1393 HOWTO (R_PPC64_DTPREL16_LO_DS,
1394 0, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_dont, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_LO_DS", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* Computes a tp-relative displacement, the difference between the value of
1408 sym+add and the value of the thread pointer (r13). */
1409 HOWTO (R_PPC64_TPREL64,
1410 0, /* rightshift */
1411 4, /* size (0 = byte, 1 = short, 2 = long) */
1412 64, /* bitsize */
1413 FALSE, /* pc_relative */
1414 0, /* bitpos */
1415 complain_overflow_dont, /* complain_on_overflow */
1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_TPREL64", /* name */
1418 FALSE, /* partial_inplace */
1419 0, /* src_mask */
1420 ONES (64), /* dst_mask */
1421 FALSE), /* pcrel_offset */
1422
1423 /* A 16 bit tprel reloc. */
1424 HOWTO (R_PPC64_TPREL16,
1425 0, /* rightshift */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 16, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
1430 complain_overflow_signed, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL16", /* name */
1433 FALSE, /* partial_inplace */
1434 0, /* src_mask */
1435 0xffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* Like TPREL16, but no overflow. */
1439 HOWTO (R_PPC64_TPREL16_LO,
1440 0, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 16, /* bitsize */
1443 FALSE, /* pc_relative */
1444 0, /* bitpos */
1445 complain_overflow_dont, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16_LO", /* name */
1448 FALSE, /* partial_inplace */
1449 0, /* src_mask */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* Like TPREL16_LO, but next higher group of 16 bits. */
1454 HOWTO (R_PPC64_TPREL16_HI,
1455 16, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 16, /* bitsize */
1458 FALSE, /* pc_relative */
1459 0, /* bitpos */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_TPREL16_HI", /* name */
1463 FALSE, /* partial_inplace */
1464 0, /* src_mask */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467
1468 /* Like TPREL16_HI, but adjust for low 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HA,
1470 16, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 16, /* bitsize */
1473 FALSE, /* pc_relative */
1474 0, /* bitpos */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_TPREL16_HA", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* Like TPREL16_HI, but next higher group of 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HIGHER,
1485 32, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 16, /* bitsize */
1488 FALSE, /* pc_relative */
1489 0, /* bitpos */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_TPREL16_HIGHER", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHERA,
1500 32, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 16, /* bitsize */
1503 FALSE, /* pc_relative */
1504 0, /* bitpos */
1505 complain_overflow_dont, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_TPREL16_HIGHERA", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHEST,
1515 48, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 16, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_TPREL16_HIGHEST", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1530 48, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1532 16, /* bitsize */
1533 FALSE, /* pc_relative */
1534 0, /* bitpos */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc, /* special_function */
1537 "R_PPC64_TPREL16_HIGHESTA", /* name */
1538 FALSE, /* partial_inplace */
1539 0, /* src_mask */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1542
1543 /* Like TPREL16, but for insns with a DS field. */
1544 HOWTO (R_PPC64_TPREL16_DS,
1545 0, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_signed, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_DS", /* name */
1553 FALSE, /* partial_inplace */
1554 0, /* src_mask */
1555 0xfffc, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* Like TPREL16_DS, but no overflow. */
1559 HOWTO (R_PPC64_TPREL16_LO_DS,
1560 0, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1562 16, /* bitsize */
1563 FALSE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_LO_DS", /* name */
1568 FALSE, /* partial_inplace */
1569 0, /* src_mask */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572
1573 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1574 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1575 to the first entry relative to the TOC base (r2). */
1576 HOWTO (R_PPC64_GOT_TLSGD16,
1577 0, /* rightshift */
1578 1, /* size (0 = byte, 1 = short, 2 = long) */
1579 16, /* bitsize */
1580 FALSE, /* pc_relative */
1581 0, /* bitpos */
1582 complain_overflow_signed, /* complain_on_overflow */
1583 ppc64_elf_unhandled_reloc, /* special_function */
1584 "R_PPC64_GOT_TLSGD16", /* name */
1585 FALSE, /* partial_inplace */
1586 0, /* src_mask */
1587 0xffff, /* dst_mask */
1588 FALSE), /* pcrel_offset */
1589
1590 /* Like GOT_TLSGD16, but no overflow. */
1591 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1592 0, /* rightshift */
1593 1, /* size (0 = byte, 1 = short, 2 = long) */
1594 16, /* bitsize */
1595 FALSE, /* pc_relative */
1596 0, /* bitpos */
1597 complain_overflow_dont, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16_LO", /* name */
1600 FALSE, /* partial_inplace */
1601 0, /* src_mask */
1602 0xffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1604
1605 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_HI,
1607 16, /* rightshift */
1608 1, /* size (0 = byte, 1 = short, 2 = long) */
1609 16, /* bitsize */
1610 FALSE, /* pc_relative */
1611 0, /* bitpos */
1612 complain_overflow_dont, /* complain_on_overflow */
1613 ppc64_elf_unhandled_reloc, /* special_function */
1614 "R_PPC64_GOT_TLSGD16_HI", /* name */
1615 FALSE, /* partial_inplace */
1616 0, /* src_mask */
1617 0xffff, /* dst_mask */
1618 FALSE), /* pcrel_offset */
1619
1620 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1622 16, /* rightshift */
1623 1, /* size (0 = byte, 1 = short, 2 = long) */
1624 16, /* bitsize */
1625 FALSE, /* pc_relative */
1626 0, /* bitpos */
1627 complain_overflow_dont, /* complain_on_overflow */
1628 ppc64_elf_unhandled_reloc, /* special_function */
1629 "R_PPC64_GOT_TLSGD16_HA", /* name */
1630 FALSE, /* partial_inplace */
1631 0, /* src_mask */
1632 0xffff, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1634
1635 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1636 with values (sym+add)@dtpmod and zero, and computes the offset to the
1637 first entry relative to the TOC base (r2). */
1638 HOWTO (R_PPC64_GOT_TLSLD16,
1639 0, /* rightshift */
1640 1, /* size (0 = byte, 1 = short, 2 = long) */
1641 16, /* bitsize */
1642 FALSE, /* pc_relative */
1643 0, /* bitpos */
1644 complain_overflow_signed, /* complain_on_overflow */
1645 ppc64_elf_unhandled_reloc, /* special_function */
1646 "R_PPC64_GOT_TLSLD16", /* name */
1647 FALSE, /* partial_inplace */
1648 0, /* src_mask */
1649 0xffff, /* dst_mask */
1650 FALSE), /* pcrel_offset */
1651
1652 /* Like GOT_TLSLD16, but no overflow. */
1653 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1654 0, /* rightshift */
1655 1, /* size (0 = byte, 1 = short, 2 = long) */
1656 16, /* bitsize */
1657 FALSE, /* pc_relative */
1658 0, /* bitpos */
1659 complain_overflow_dont, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16_LO", /* name */
1662 FALSE, /* partial_inplace */
1663 0, /* src_mask */
1664 0xffff, /* dst_mask */
1665 FALSE), /* pcrel_offset */
1666
1667 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1669 16, /* rightshift */
1670 1, /* size (0 = byte, 1 = short, 2 = long) */
1671 16, /* bitsize */
1672 FALSE, /* pc_relative */
1673 0, /* bitpos */
1674 complain_overflow_dont, /* complain_on_overflow */
1675 ppc64_elf_unhandled_reloc, /* special_function */
1676 "R_PPC64_GOT_TLSLD16_HI", /* name */
1677 FALSE, /* partial_inplace */
1678 0, /* src_mask */
1679 0xffff, /* dst_mask */
1680 FALSE), /* pcrel_offset */
1681
1682 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1684 16, /* rightshift */
1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1686 16, /* bitsize */
1687 FALSE, /* pc_relative */
1688 0, /* bitpos */
1689 complain_overflow_dont, /* complain_on_overflow */
1690 ppc64_elf_unhandled_reloc, /* special_function */
1691 "R_PPC64_GOT_TLSLD16_HA", /* name */
1692 FALSE, /* partial_inplace */
1693 0, /* src_mask */
1694 0xffff, /* dst_mask */
1695 FALSE), /* pcrel_offset */
1696
1697 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1698 the offset to the entry relative to the TOC base (r2). */
1699 HOWTO (R_PPC64_GOT_DTPREL16_DS,
1700 0, /* rightshift */
1701 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 16, /* bitsize */
1703 FALSE, /* pc_relative */
1704 0, /* bitpos */
1705 complain_overflow_signed, /* complain_on_overflow */
1706 ppc64_elf_unhandled_reloc, /* special_function */
1707 "R_PPC64_GOT_DTPREL16_DS", /* name */
1708 FALSE, /* partial_inplace */
1709 0, /* src_mask */
1710 0xfffc, /* dst_mask */
1711 FALSE), /* pcrel_offset */
1712
1713 /* Like GOT_DTPREL16_DS, but no overflow. */
1714 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1715 0, /* rightshift */
1716 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 16, /* bitsize */
1718 FALSE, /* pc_relative */
1719 0, /* bitpos */
1720 complain_overflow_dont, /* complain_on_overflow */
1721 ppc64_elf_unhandled_reloc, /* special_function */
1722 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1723 FALSE, /* partial_inplace */
1724 0, /* src_mask */
1725 0xfffc, /* dst_mask */
1726 FALSE), /* pcrel_offset */
1727
1728 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1730 16, /* rightshift */
1731 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 16, /* bitsize */
1733 FALSE, /* pc_relative */
1734 0, /* bitpos */
1735 complain_overflow_dont, /* complain_on_overflow */
1736 ppc64_elf_unhandled_reloc, /* special_function */
1737 "R_PPC64_GOT_DTPREL16_HI", /* name */
1738 FALSE, /* partial_inplace */
1739 0, /* src_mask */
1740 0xffff, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1742
1743 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1745 16, /* rightshift */
1746 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 16, /* bitsize */
1748 FALSE, /* pc_relative */
1749 0, /* bitpos */
1750 complain_overflow_dont, /* complain_on_overflow */
1751 ppc64_elf_unhandled_reloc, /* special_function */
1752 "R_PPC64_GOT_DTPREL16_HA", /* name */
1753 FALSE, /* partial_inplace */
1754 0, /* src_mask */
1755 0xffff, /* dst_mask */
1756 FALSE), /* pcrel_offset */
1757
1758 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1759 offset to the entry relative to the TOC base (r2). */
1760 HOWTO (R_PPC64_GOT_TPREL16_DS,
1761 0, /* rightshift */
1762 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 16, /* bitsize */
1764 FALSE, /* pc_relative */
1765 0, /* bitpos */
1766 complain_overflow_signed, /* complain_on_overflow */
1767 ppc64_elf_unhandled_reloc, /* special_function */
1768 "R_PPC64_GOT_TPREL16_DS", /* name */
1769 FALSE, /* partial_inplace */
1770 0, /* src_mask */
1771 0xfffc, /* dst_mask */
1772 FALSE), /* pcrel_offset */
1773
1774 /* Like GOT_TPREL16_DS, but no overflow. */
1775 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1776 0, /* rightshift */
1777 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 16, /* bitsize */
1779 FALSE, /* pc_relative */
1780 0, /* bitpos */
1781 complain_overflow_dont, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1784 FALSE, /* partial_inplace */
1785 0, /* src_mask */
1786 0xfffc, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1788
1789 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1790 HOWTO (R_PPC64_GOT_TPREL16_HI,
1791 16, /* rightshift */
1792 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 16, /* bitsize */
1794 FALSE, /* pc_relative */
1795 0, /* bitpos */
1796 complain_overflow_dont, /* complain_on_overflow */
1797 ppc64_elf_unhandled_reloc, /* special_function */
1798 "R_PPC64_GOT_TPREL16_HI", /* name */
1799 FALSE, /* partial_inplace */
1800 0, /* src_mask */
1801 0xffff, /* dst_mask */
1802 FALSE), /* pcrel_offset */
1803
1804 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HA,
1806 16, /* rightshift */
1807 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 16, /* bitsize */
1809 FALSE, /* pc_relative */
1810 0, /* bitpos */
1811 complain_overflow_dont, /* complain_on_overflow */
1812 ppc64_elf_unhandled_reloc, /* special_function */
1813 "R_PPC64_GOT_TPREL16_HA", /* name */
1814 FALSE, /* partial_inplace */
1815 0, /* src_mask */
1816 0xffff, /* dst_mask */
1817 FALSE), /* pcrel_offset */
1818
1819 /* GNU extension to record C++ vtable hierarchy. */
1820 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1821 0, /* rightshift */
1822 0, /* size (0 = byte, 1 = short, 2 = long) */
1823 0, /* bitsize */
1824 FALSE, /* pc_relative */
1825 0, /* bitpos */
1826 complain_overflow_dont, /* complain_on_overflow */
1827 NULL, /* special_function */
1828 "R_PPC64_GNU_VTINHERIT", /* name */
1829 FALSE, /* partial_inplace */
1830 0, /* src_mask */
1831 0, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1833
1834 /* GNU extension to record C++ vtable member usage. */
1835 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1836 0, /* rightshift */
1837 0, /* size (0 = byte, 1 = short, 2 = long) */
1838 0, /* bitsize */
1839 FALSE, /* pc_relative */
1840 0, /* bitpos */
1841 complain_overflow_dont, /* complain_on_overflow */
1842 NULL, /* special_function */
1843 "R_PPC64_GNU_VTENTRY", /* name */
1844 FALSE, /* partial_inplace */
1845 0, /* src_mask */
1846 0, /* dst_mask */
1847 FALSE), /* pcrel_offset */
1848 };
1849
1850 \f
1851 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1852 be done. */
1853
1854 static void
1855 ppc_howto_init (void)
1856 {
1857 unsigned int i, type;
1858
1859 for (i = 0;
1860 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1861 i++)
1862 {
1863 type = ppc64_elf_howto_raw[i].type;
1864 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1865 / sizeof (ppc64_elf_howto_table[0])));
1866 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1867 }
1868 }
1869
1870 static reloc_howto_type *
1871 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1872 bfd_reloc_code_real_type code)
1873 {
1874 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1875
1876 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1877 /* Initialize howto table if needed. */
1878 ppc_howto_init ();
1879
1880 switch (code)
1881 {
1882 default:
1883 return NULL;
1884
1885 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1886 break;
1887 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1888 break;
1889 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1890 break;
1891 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1892 break;
1893 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1894 break;
1895 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1896 break;
1897 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1898 break;
1899 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1900 break;
1901 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1902 break;
1903 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1904 break;
1905 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1906 break;
1907 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1908 break;
1909 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1910 break;
1911 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1912 break;
1913 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1914 break;
1915 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1916 break;
1917 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1918 break;
1919 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1920 break;
1921 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1922 break;
1923 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1924 break;
1925 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1926 break;
1927 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1928 break;
1929 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1930 break;
1931 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1932 break;
1933 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1934 break;
1935 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1936 break;
1937 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1938 break;
1939 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1940 break;
1941 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1942 break;
1943 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1944 break;
1945 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1946 break;
1947 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1948 break;
1949 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1950 break;
1951 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1952 break;
1953 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1954 break;
1955 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1956 break;
1957 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1958 break;
1959 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1960 break;
1961 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1962 break;
1963 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1964 break;
1965 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1966 break;
1967 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1968 break;
1969 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1970 break;
1971 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1972 break;
1973 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1974 break;
1975 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1976 break;
1977 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1978 break;
1979 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1980 break;
1981 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1982 break;
1983 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1984 break;
1985 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
1986 break;
1987 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
1988 break;
1989 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
1990 break;
1991 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
1992 break;
1993 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
1994 break;
1995 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
1996 break;
1997 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
1998 break;
1999 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2000 break;
2001 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2002 break;
2003 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2004 break;
2005 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2006 break;
2007 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2008 break;
2009 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2010 break;
2011 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2012 break;
2013 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2014 break;
2015 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2016 break;
2017 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2018 break;
2019 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2020 break;
2021 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2022 break;
2023 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2024 break;
2025 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2026 break;
2027 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2028 break;
2029 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2030 break;
2031 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2032 break;
2033 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2034 break;
2035 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2036 break;
2037 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2038 break;
2039 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2040 break;
2041 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2042 break;
2043 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2044 break;
2045 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2046 break;
2047 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2048 break;
2049 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2050 break;
2051 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2052 break;
2053 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2054 break;
2055 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2056 break;
2057 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2058 break;
2059 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2060 break;
2061 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2062 break;
2063 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2064 break;
2065 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2066 break;
2067 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2068 break;
2069 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2070 break;
2071 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2072 break;
2073 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2074 break;
2075 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2076 break;
2077 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2078 break;
2079 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2080 break;
2081 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2082 break;
2083 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2084 break;
2085 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2086 break;
2087 }
2088
2089 return ppc64_elf_howto_table[r];
2090 };
2091
2092 /* Set the howto pointer for a PowerPC ELF reloc. */
2093
2094 static void
2095 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2096 Elf_Internal_Rela *dst)
2097 {
2098 unsigned int type;
2099
2100 /* Initialize howto table if needed. */
2101 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2102 ppc_howto_init ();
2103
2104 type = ELF64_R_TYPE (dst->r_info);
2105 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2106 / sizeof (ppc64_elf_howto_table[0])));
2107 cache_ptr->howto = ppc64_elf_howto_table[type];
2108 }
2109
2110 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2111
2112 static bfd_reloc_status_type
2113 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2114 void *data, asection *input_section,
2115 bfd *output_bfd, char **error_message)
2116 {
2117 /* If this is a relocatable link (output_bfd test tells us), just
2118 call the generic function. Any adjustment will be done at final
2119 link time. */
2120 if (output_bfd != NULL)
2121 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2122 input_section, output_bfd, error_message);
2123
2124 /* Adjust the addend for sign extension of the low 16 bits.
2125 We won't actually be using the low 16 bits, so trashing them
2126 doesn't matter. */
2127 reloc_entry->addend += 0x8000;
2128 return bfd_reloc_continue;
2129 }
2130
2131 static bfd_reloc_status_type
2132 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2133 void *data, asection *input_section,
2134 bfd *output_bfd, char **error_message)
2135 {
2136 long insn;
2137 enum elf_ppc64_reloc_type r_type;
2138 bfd_size_type octets;
2139 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2140 bfd_boolean is_power4 = FALSE;
2141
2142 /* If this is a relocatable link (output_bfd test tells us), just
2143 call the generic function. Any adjustment will be done at final
2144 link time. */
2145 if (output_bfd != NULL)
2146 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2147 input_section, output_bfd, error_message);
2148
2149 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2150 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2151 insn &= ~(0x01 << 21);
2152 r_type = reloc_entry->howto->type;
2153 if (r_type == R_PPC64_ADDR14_BRTAKEN
2154 || r_type == R_PPC64_REL14_BRTAKEN)
2155 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2156
2157 if (is_power4)
2158 {
2159 /* Set 'a' bit. This is 0b00010 in BO field for branch
2160 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2161 for branch on CTR insns (BO == 1a00t or 1a01t). */
2162 if ((insn & (0x14 << 21)) == (0x04 << 21))
2163 insn |= 0x02 << 21;
2164 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2165 insn |= 0x08 << 21;
2166 else
2167 return bfd_reloc_continue;
2168 }
2169 else
2170 {
2171 bfd_vma target = 0;
2172 bfd_vma from;
2173
2174 if (!bfd_is_com_section (symbol->section))
2175 target = symbol->value;
2176 target += symbol->section->output_section->vma;
2177 target += symbol->section->output_offset;
2178 target += reloc_entry->addend;
2179
2180 from = (reloc_entry->address
2181 + input_section->output_offset
2182 + input_section->output_section->vma);
2183
2184 /* Invert 'y' bit if not the default. */
2185 if ((bfd_signed_vma) (target - from) < 0)
2186 insn ^= 0x01 << 21;
2187 }
2188 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2189 return bfd_reloc_continue;
2190 }
2191
2192 static bfd_reloc_status_type
2193 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2194 void *data, asection *input_section,
2195 bfd *output_bfd, char **error_message)
2196 {
2197 /* If this is a relocatable link (output_bfd test tells us), just
2198 call the generic function. Any adjustment will be done at final
2199 link time. */
2200 if (output_bfd != NULL)
2201 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2202 input_section, output_bfd, error_message);
2203
2204 /* Subtract the symbol section base address. */
2205 reloc_entry->addend -= symbol->section->output_section->vma;
2206 return bfd_reloc_continue;
2207 }
2208
2209 static bfd_reloc_status_type
2210 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2211 void *data, asection *input_section,
2212 bfd *output_bfd, char **error_message)
2213 {
2214 /* If this is a relocatable link (output_bfd test tells us), just
2215 call the generic function. Any adjustment will be done at final
2216 link time. */
2217 if (output_bfd != NULL)
2218 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2219 input_section, output_bfd, error_message);
2220
2221 /* Subtract the symbol section base address. */
2222 reloc_entry->addend -= symbol->section->output_section->vma;
2223
2224 /* Adjust the addend for sign extension of the low 16 bits. */
2225 reloc_entry->addend += 0x8000;
2226 return bfd_reloc_continue;
2227 }
2228
2229 static bfd_reloc_status_type
2230 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2231 void *data, asection *input_section,
2232 bfd *output_bfd, char **error_message)
2233 {
2234 bfd_vma TOCstart;
2235
2236 /* If this is a relocatable link (output_bfd test tells us), just
2237 call the generic function. Any adjustment will be done at final
2238 link time. */
2239 if (output_bfd != NULL)
2240 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2241 input_section, output_bfd, error_message);
2242
2243 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2244 if (TOCstart == 0)
2245 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2246
2247 /* Subtract the TOC base address. */
2248 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2249 return bfd_reloc_continue;
2250 }
2251
2252 static bfd_reloc_status_type
2253 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2254 void *data, asection *input_section,
2255 bfd *output_bfd, char **error_message)
2256 {
2257 bfd_vma TOCstart;
2258
2259 /* If this is a relocatable link (output_bfd test tells us), just
2260 call the generic function. Any adjustment will be done at final
2261 link time. */
2262 if (output_bfd != NULL)
2263 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2264 input_section, output_bfd, error_message);
2265
2266 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2267 if (TOCstart == 0)
2268 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2269
2270 /* Subtract the TOC base address. */
2271 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2272
2273 /* Adjust the addend for sign extension of the low 16 bits. */
2274 reloc_entry->addend += 0x8000;
2275 return bfd_reloc_continue;
2276 }
2277
2278 static bfd_reloc_status_type
2279 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2280 void *data, asection *input_section,
2281 bfd *output_bfd, char **error_message)
2282 {
2283 bfd_vma TOCstart;
2284 bfd_size_type octets;
2285
2286 /* If this is a relocatable link (output_bfd test tells us), just
2287 call the generic function. Any adjustment will be done at final
2288 link time. */
2289 if (output_bfd != NULL)
2290 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2291 input_section, output_bfd, error_message);
2292
2293 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2294 if (TOCstart == 0)
2295 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2296
2297 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2298 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2299 return bfd_reloc_ok;
2300 }
2301
2302 static bfd_reloc_status_type
2303 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2304 void *data, asection *input_section,
2305 bfd *output_bfd, char **error_message)
2306 {
2307 /* If this is a relocatable link (output_bfd test tells us), just
2308 call the generic function. Any adjustment will be done at final
2309 link time. */
2310 if (output_bfd != NULL)
2311 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2312 input_section, output_bfd, error_message);
2313
2314 if (error_message != NULL)
2315 {
2316 static char buf[60];
2317 sprintf (buf, "generic linker can't handle %s",
2318 reloc_entry->howto->name);
2319 *error_message = buf;
2320 }
2321 return bfd_reloc_dangerous;
2322 }
2323
2324 struct ppc64_elf_obj_tdata
2325 {
2326 struct elf_obj_tdata elf;
2327
2328 /* Shortcuts to dynamic linker sections. */
2329 asection *got;
2330 asection *relgot;
2331
2332 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2333 sections means we potentially need one of these for each input bfd. */
2334 union {
2335 bfd_signed_vma refcount;
2336 bfd_vma offset;
2337 } tlsld_got;
2338 };
2339
2340 #define ppc64_elf_tdata(bfd) \
2341 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2342
2343 #define ppc64_tlsld_got(bfd) \
2344 (&ppc64_elf_tdata (bfd)->tlsld_got)
2345
2346 /* Override the generic function because we store some extras. */
2347
2348 static bfd_boolean
2349 ppc64_elf_mkobject (bfd *abfd)
2350 {
2351 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2352 abfd->tdata.any = bfd_zalloc (abfd, amt);
2353 if (abfd->tdata.any == NULL)
2354 return FALSE;
2355 return TRUE;
2356 }
2357
2358 /* Fix bad default arch selected for a 64 bit input bfd when the
2359 default is 32 bit. */
2360
2361 static bfd_boolean
2362 ppc64_elf_object_p (bfd *abfd)
2363 {
2364 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2365 {
2366 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2367
2368 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2369 {
2370 /* Relies on arch after 32 bit default being 64 bit default. */
2371 abfd->arch_info = abfd->arch_info->next;
2372 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2373 }
2374 }
2375 return TRUE;
2376 }
2377
2378 /* Support for core dump NOTE sections. */
2379
2380 static bfd_boolean
2381 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2382 {
2383 size_t offset, raw_size;
2384
2385 if (note->descsz != 504)
2386 return FALSE;
2387
2388 /* pr_cursig */
2389 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2390
2391 /* pr_pid */
2392 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2393
2394 /* pr_reg */
2395 offset = 112;
2396 raw_size = 384;
2397
2398 /* Make a ".reg/999" section. */
2399 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2400 raw_size, note->descpos + offset);
2401 }
2402
2403 static bfd_boolean
2404 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2405 {
2406 if (note->descsz != 136)
2407 return FALSE;
2408
2409 elf_tdata (abfd)->core_program
2410 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2411 elf_tdata (abfd)->core_command
2412 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2413
2414 return TRUE;
2415 }
2416
2417 /* Merge backend specific data from an object file to the output
2418 object file when linking. */
2419
2420 static bfd_boolean
2421 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2422 {
2423 /* Check if we have the same endianess. */
2424 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2425 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2426 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2427 {
2428 const char *msg;
2429
2430 if (bfd_big_endian (ibfd))
2431 msg = _("%s: compiled for a big endian system "
2432 "and target is little endian");
2433 else
2434 msg = _("%s: compiled for a little endian system "
2435 "and target is big endian");
2436
2437 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
2438
2439 bfd_set_error (bfd_error_wrong_format);
2440 return FALSE;
2441 }
2442
2443 return TRUE;
2444 }
2445
2446 /* Add extra PPC sections. */
2447
2448 static struct bfd_elf_special_section const ppc64_elf_special_sections[]=
2449 {
2450 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2451 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2452 { ".plt", 4, 0, SHT_NOBITS, 0 },
2453 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2454 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2455 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2456 { NULL, 0, 0, 0, 0 }
2457 };
2458
2459 struct _ppc64_elf_section_data
2460 {
2461 struct bfd_elf_section_data elf;
2462
2463 /* An array with one entry for each opd function descriptor. */
2464 union
2465 {
2466 /* Points to the function code section for local opd entries. */
2467 asection **func_sec;
2468 /* After editing .opd, adjust references to opd local syms. */
2469 long *adjust;
2470 } opd;
2471
2472 /* An array for toc sections, indexed by offset/8.
2473 Specifies the relocation symbol index used at a given toc offset. */
2474 unsigned *t_symndx;
2475 };
2476
2477 #define ppc64_elf_section_data(sec) \
2478 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2479
2480 static bfd_boolean
2481 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2482 {
2483 struct _ppc64_elf_section_data *sdata;
2484 bfd_size_type amt = sizeof (*sdata);
2485
2486 sdata = bfd_zalloc (abfd, amt);
2487 if (sdata == NULL)
2488 return FALSE;
2489 sec->used_by_bfd = sdata;
2490
2491 return _bfd_elf_new_section_hook (abfd, sec);
2492 }
2493 \f
2494 /* The following functions are specific to the ELF linker, while
2495 functions above are used generally. Those named ppc64_elf_* are
2496 called by the main ELF linker code. They appear in this file more
2497 or less in the order in which they are called. eg.
2498 ppc64_elf_check_relocs is called early in the link process,
2499 ppc64_elf_finish_dynamic_sections is one of the last functions
2500 called.
2501
2502 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2503 functions have both a function code symbol and a function descriptor
2504 symbol. A call to foo in a relocatable object file looks like:
2505
2506 . .text
2507 . x:
2508 . bl .foo
2509 . nop
2510
2511 The function definition in another object file might be:
2512
2513 . .section .opd
2514 . foo: .quad .foo
2515 . .quad .TOC.@tocbase
2516 . .quad 0
2517 .
2518 . .text
2519 . .foo: blr
2520
2521 When the linker resolves the call during a static link, the branch
2522 unsurprisingly just goes to .foo and the .opd information is unused.
2523 If the function definition is in a shared library, things are a little
2524 different: The call goes via a plt call stub, the opd information gets
2525 copied to the plt, and the linker patches the nop.
2526
2527 . x:
2528 . bl .foo_stub
2529 . ld 2,40(1)
2530 .
2531 .
2532 . .foo_stub:
2533 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2534 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2535 . std 2,40(1) # this is the general idea
2536 . ld 11,0(12)
2537 . ld 2,8(12)
2538 . mtctr 11
2539 . ld 11,16(12)
2540 . bctr
2541 .
2542 . .section .plt
2543 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2544
2545 The "reloc ()" notation is supposed to indicate that the linker emits
2546 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2547 copying.
2548
2549 What are the difficulties here? Well, firstly, the relocations
2550 examined by the linker in check_relocs are against the function code
2551 sym .foo, while the dynamic relocation in the plt is emitted against
2552 the function descriptor symbol, foo. Somewhere along the line, we need
2553 to carefully copy dynamic link information from one symbol to the other.
2554 Secondly, the generic part of the elf linker will make .foo a dynamic
2555 symbol as is normal for most other backends. We need foo dynamic
2556 instead, at least for an application final link. However, when
2557 creating a shared library containing foo, we need to have both symbols
2558 dynamic so that references to .foo are satisfied during the early
2559 stages of linking. Otherwise the linker might decide to pull in a
2560 definition from some other object, eg. a static library. */
2561
2562 /* The linker needs to keep track of the number of relocs that it
2563 decides to copy as dynamic relocs in check_relocs for each symbol.
2564 This is so that it can later discard them if they are found to be
2565 unnecessary. We store the information in a field extending the
2566 regular ELF linker hash table. */
2567
2568 struct ppc_dyn_relocs
2569 {
2570 struct ppc_dyn_relocs *next;
2571
2572 /* The input section of the reloc. */
2573 asection *sec;
2574
2575 /* Total number of relocs copied for the input section. */
2576 bfd_size_type count;
2577
2578 /* Number of pc-relative relocs copied for the input section. */
2579 bfd_size_type pc_count;
2580 };
2581
2582 /* Track GOT entries needed for a given symbol. We might need more
2583 than one got entry per symbol. */
2584 struct got_entry
2585 {
2586 struct got_entry *next;
2587
2588 /* The symbol addend that we'll be placing in the GOT. */
2589 bfd_vma addend;
2590
2591 /* Unlike other ELF targets, we use separate GOT entries for the same
2592 symbol referenced from different input files. This is to support
2593 automatic multiple TOC/GOT sections, where the TOC base can vary
2594 from one input file to another.
2595
2596 Point to the BFD owning this GOT entry. */
2597 bfd *owner;
2598
2599 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2600 TLS_TPREL or TLS_DTPREL for tls entries. */
2601 char tls_type;
2602
2603 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2604 union
2605 {
2606 bfd_signed_vma refcount;
2607 bfd_vma offset;
2608 } got;
2609 };
2610
2611 /* The same for PLT. */
2612 struct plt_entry
2613 {
2614 struct plt_entry *next;
2615
2616 bfd_vma addend;
2617
2618 union
2619 {
2620 bfd_signed_vma refcount;
2621 bfd_vma offset;
2622 } plt;
2623 };
2624
2625 /* Of those relocs that might be copied as dynamic relocs, this macro
2626 selects those that must be copied when linking a shared library,
2627 even when the symbol is local. */
2628
2629 #define MUST_BE_DYN_RELOC(RTYPE) \
2630 ((RTYPE) != R_PPC64_REL32 \
2631 && (RTYPE) != R_PPC64_REL64 \
2632 && (RTYPE) != R_PPC64_REL30)
2633
2634 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2635 copying dynamic variables from a shared lib into an app's dynbss
2636 section, and instead use a dynamic relocation to point into the
2637 shared lib. With code that gcc generates, it's vital that this be
2638 enabled; In the PowerPC64 ABI, the address of a function is actually
2639 the address of a function descriptor, which resides in the .opd
2640 section. gcc uses the descriptor directly rather than going via the
2641 GOT as some other ABI's do, which means that initialized function
2642 pointers must reference the descriptor. Thus, a function pointer
2643 initialized to the address of a function in a shared library will
2644 either require a copy reloc, or a dynamic reloc. Using a copy reloc
2645 redefines the function descriptor symbol to point to the copy. This
2646 presents a problem as a plt entry for that function is also
2647 initialized from the function descriptor symbol and the copy reloc
2648 may not be initialized first. */
2649 #define ELIMINATE_COPY_RELOCS 1
2650
2651 /* Section name for stubs is the associated section name plus this
2652 string. */
2653 #define STUB_SUFFIX ".stub"
2654
2655 /* Linker stubs.
2656 ppc_stub_long_branch:
2657 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
2658 destination, but a 24 bit branch in a stub section will reach.
2659 . b dest
2660
2661 ppc_stub_plt_branch:
2662 Similar to the above, but a 24 bit branch in the stub section won't
2663 reach its destination.
2664 . addis %r12,%r2,xxx@toc@ha
2665 . ld %r11,xxx@toc@l(%r12)
2666 . mtctr %r11
2667 . bctr
2668
2669 ppc_stub_plt_call:
2670 Used to call a function in a shared library.
2671 . addis %r12,%r2,xxx@toc@ha
2672 . std %r2,40(%r1)
2673 . ld %r11,xxx+0@toc@l(%r12)
2674 . ld %r2,xxx+8@toc@l(%r12)
2675 . mtctr %r11
2676 . ld %r11,xxx+16@toc@l(%r12)
2677 . bctr
2678
2679 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
2680 code to adjust the value and save r2 to support multiple toc sections.
2681 A ppc_stub_long_branch with an r2 offset looks like:
2682 . std %r2,40(%r1)
2683 . addis %r2,%r2,off@ha
2684 . addi %r2,%r2,off@l
2685 . b dest
2686
2687 A ppc_stub_plt_branch with an r2 offset looks like:
2688 . std %r2,40(%r1)
2689 . addis %r12,%r2,xxx@toc@ha
2690 . ld %r11,xxx@toc@l(%r12)
2691 . addis %r2,%r2,off@ha
2692 . addi %r2,%r2,off@l
2693 . mtctr %r11
2694 . bctr
2695 */
2696
2697 enum ppc_stub_type {
2698 ppc_stub_none,
2699 ppc_stub_long_branch,
2700 ppc_stub_long_branch_r2off,
2701 ppc_stub_plt_branch,
2702 ppc_stub_plt_branch_r2off,
2703 ppc_stub_plt_call
2704 };
2705
2706 struct ppc_stub_hash_entry {
2707
2708 /* Base hash table entry structure. */
2709 struct bfd_hash_entry root;
2710
2711 enum ppc_stub_type stub_type;
2712
2713 /* The stub section. */
2714 asection *stub_sec;
2715
2716 /* Offset within stub_sec of the beginning of this stub. */
2717 bfd_vma stub_offset;
2718
2719 /* Given the symbol's value and its section we can determine its final
2720 value when building the stubs (so the stub knows where to jump. */
2721 bfd_vma target_value;
2722 asection *target_section;
2723
2724 /* The symbol table entry, if any, that this was derived from. */
2725 struct ppc_link_hash_entry *h;
2726
2727 /* And the reloc addend that this was derived from. */
2728 bfd_vma addend;
2729
2730 /* Where this stub is being called from, or, in the case of combined
2731 stub sections, the first input section in the group. */
2732 asection *id_sec;
2733 };
2734
2735 struct ppc_branch_hash_entry {
2736
2737 /* Base hash table entry structure. */
2738 struct bfd_hash_entry root;
2739
2740 /* Offset within .branch_lt. */
2741 unsigned int offset;
2742
2743 /* Generation marker. */
2744 unsigned int iter;
2745 };
2746
2747 struct ppc_link_hash_entry
2748 {
2749 struct elf_link_hash_entry elf;
2750
2751 /* A pointer to the most recently used stub hash entry against this
2752 symbol. */
2753 struct ppc_stub_hash_entry *stub_cache;
2754
2755 /* Track dynamic relocs copied for this symbol. */
2756 struct ppc_dyn_relocs *dyn_relocs;
2757
2758 /* Link between function code and descriptor symbols. */
2759 struct elf_link_hash_entry *oh;
2760
2761 /* Flag function code and descriptor symbols. */
2762 unsigned int is_func:1;
2763 unsigned int is_func_descriptor:1;
2764 unsigned int is_entry:1;
2765
2766 /* Whether global opd sym has been adjusted or not. */
2767 unsigned int adjust_done:1;
2768
2769 /* Contexts in which symbol is used in the GOT (or TOC).
2770 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
2771 corresponding relocs are encountered during check_relocs.
2772 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2773 indicate the corresponding GOT entry type is not needed.
2774 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
2775 a TPREL one. We use a separate flag rather than setting TPREL
2776 just for convenience in distinguishing the two cases. */
2777 #define TLS_GD 1 /* GD reloc. */
2778 #define TLS_LD 2 /* LD reloc. */
2779 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2780 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2781 #define TLS_TLS 16 /* Any TLS reloc. */
2782 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
2783 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
2784 char tls_mask;
2785 };
2786
2787 /* ppc64 ELF linker hash table. */
2788
2789 struct ppc_link_hash_table
2790 {
2791 struct elf_link_hash_table elf;
2792
2793 /* The stub hash table. */
2794 struct bfd_hash_table stub_hash_table;
2795
2796 /* Another hash table for plt_branch stubs. */
2797 struct bfd_hash_table branch_hash_table;
2798
2799 /* Linker stub bfd. */
2800 bfd *stub_bfd;
2801
2802 /* Linker call-backs. */
2803 asection * (*add_stub_section) (const char *, asection *);
2804 void (*layout_sections_again) (void);
2805
2806 /* Array to keep track of which stub sections have been created, and
2807 information on stub grouping. */
2808 struct map_stub {
2809 /* This is the section to which stubs in the group will be attached. */
2810 asection *link_sec;
2811 /* The stub section. */
2812 asection *stub_sec;
2813 /* Along with elf_gp, specifies the TOC pointer used in this group. */
2814 bfd_vma toc_off;
2815 } *stub_group;
2816
2817 /* Support for multiple toc sections. */
2818 unsigned int no_multi_toc;
2819 unsigned int multi_toc_needed;
2820
2821 /* Temp used when calculating TOC pointers. */
2822 bfd_vma toc_curr;
2823
2824 /* Highest input section id. */
2825 int top_id;
2826
2827 /* Highest output section index. */
2828 int top_index;
2829
2830 /* List of input sections for each output section. */
2831 asection **input_list;
2832
2833 /* Short-cuts to get to dynamic linker sections. */
2834 asection *got;
2835 asection *plt;
2836 asection *relplt;
2837 asection *dynbss;
2838 asection *relbss;
2839 asection *glink;
2840 asection *sfpr;
2841 asection *brlt;
2842 asection *relbrlt;
2843
2844 /* Shortcut to .__tls_get_addr. */
2845 struct elf_link_hash_entry *tls_get_addr;
2846
2847 /* Statistics. */
2848 unsigned long stub_count[ppc_stub_plt_call];
2849
2850 /* Set if we should emit symbols for stubs. */
2851 unsigned int emit_stub_syms;
2852
2853 /* Set on error. */
2854 unsigned int stub_error;
2855
2856 /* Flag set when small branches are detected. Used to
2857 select suitable defaults for the stub group size. */
2858 unsigned int has_14bit_branch;
2859
2860 /* Set if we detect a reference undefined weak symbol. */
2861 unsigned int have_undefweak;
2862
2863 /* Incremented every time we size stubs. */
2864 unsigned int stub_iteration;
2865
2866 /* Small local sym to section mapping cache. */
2867 struct sym_sec_cache sym_sec;
2868 };
2869
2870 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2871
2872 #define ppc_hash_table(p) \
2873 ((struct ppc_link_hash_table *) ((p)->hash))
2874
2875 #define ppc_stub_hash_lookup(table, string, create, copy) \
2876 ((struct ppc_stub_hash_entry *) \
2877 bfd_hash_lookup ((table), (string), (create), (copy)))
2878
2879 #define ppc_branch_hash_lookup(table, string, create, copy) \
2880 ((struct ppc_branch_hash_entry *) \
2881 bfd_hash_lookup ((table), (string), (create), (copy)))
2882
2883 /* Create an entry in the stub hash table. */
2884
2885 static struct bfd_hash_entry *
2886 stub_hash_newfunc (struct bfd_hash_entry *entry,
2887 struct bfd_hash_table *table,
2888 const char *string)
2889 {
2890 /* Allocate the structure if it has not already been allocated by a
2891 subclass. */
2892 if (entry == NULL)
2893 {
2894 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2895 if (entry == NULL)
2896 return entry;
2897 }
2898
2899 /* Call the allocation method of the superclass. */
2900 entry = bfd_hash_newfunc (entry, table, string);
2901 if (entry != NULL)
2902 {
2903 struct ppc_stub_hash_entry *eh;
2904
2905 /* Initialize the local fields. */
2906 eh = (struct ppc_stub_hash_entry *) entry;
2907 eh->stub_type = ppc_stub_none;
2908 eh->stub_sec = NULL;
2909 eh->stub_offset = 0;
2910 eh->target_value = 0;
2911 eh->target_section = NULL;
2912 eh->h = NULL;
2913 eh->id_sec = NULL;
2914 }
2915
2916 return entry;
2917 }
2918
2919 /* Create an entry in the branch hash table. */
2920
2921 static struct bfd_hash_entry *
2922 branch_hash_newfunc (struct bfd_hash_entry *entry,
2923 struct bfd_hash_table *table,
2924 const char *string)
2925 {
2926 /* Allocate the structure if it has not already been allocated by a
2927 subclass. */
2928 if (entry == NULL)
2929 {
2930 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2931 if (entry == NULL)
2932 return entry;
2933 }
2934
2935 /* Call the allocation method of the superclass. */
2936 entry = bfd_hash_newfunc (entry, table, string);
2937 if (entry != NULL)
2938 {
2939 struct ppc_branch_hash_entry *eh;
2940
2941 /* Initialize the local fields. */
2942 eh = (struct ppc_branch_hash_entry *) entry;
2943 eh->offset = 0;
2944 eh->iter = 0;
2945 }
2946
2947 return entry;
2948 }
2949
2950 /* Create an entry in a ppc64 ELF linker hash table. */
2951
2952 static struct bfd_hash_entry *
2953 link_hash_newfunc (struct bfd_hash_entry *entry,
2954 struct bfd_hash_table *table,
2955 const char *string)
2956 {
2957 /* Allocate the structure if it has not already been allocated by a
2958 subclass. */
2959 if (entry == NULL)
2960 {
2961 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2962 if (entry == NULL)
2963 return entry;
2964 }
2965
2966 /* Call the allocation method of the superclass. */
2967 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2968 if (entry != NULL)
2969 {
2970 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2971
2972 eh->stub_cache = NULL;
2973 eh->dyn_relocs = NULL;
2974 eh->oh = NULL;
2975 eh->is_func = 0;
2976 eh->is_func_descriptor = 0;
2977 eh->is_entry = 0;
2978 eh->adjust_done = 0;
2979 eh->tls_mask = 0;
2980 }
2981
2982 return entry;
2983 }
2984
2985 /* Create a ppc64 ELF linker hash table. */
2986
2987 static struct bfd_link_hash_table *
2988 ppc64_elf_link_hash_table_create (bfd *abfd)
2989 {
2990 struct ppc_link_hash_table *htab;
2991 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2992
2993 htab = bfd_zmalloc (amt);
2994 if (htab == NULL)
2995 return NULL;
2996
2997 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2998 {
2999 free (htab);
3000 return NULL;
3001 }
3002
3003 /* Init the stub hash table too. */
3004 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3005 return NULL;
3006
3007 /* And the branch hash table. */
3008 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3009 return NULL;
3010
3011 /* Initializing two fields of the union is just cosmetic. We really
3012 only care about glist, but when compiled on a 32-bit host the
3013 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3014 debugger inspection of these fields look nicer. */
3015 htab->elf.init_refcount.refcount = 0;
3016 htab->elf.init_refcount.glist = NULL;
3017 htab->elf.init_offset.offset = 0;
3018 htab->elf.init_offset.glist = NULL;
3019
3020 return &htab->elf.root;
3021 }
3022
3023 /* Free the derived linker hash table. */
3024
3025 static void
3026 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3027 {
3028 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3029
3030 bfd_hash_table_free (&ret->stub_hash_table);
3031 bfd_hash_table_free (&ret->branch_hash_table);
3032 _bfd_generic_link_hash_table_free (hash);
3033 }
3034
3035 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3036
3037 void
3038 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3039 {
3040 struct ppc_link_hash_table *htab;
3041
3042 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3043
3044 /* Always hook our dynamic sections into the first bfd, which is the
3045 linker created stub bfd. This ensures that the GOT header is at
3046 the start of the output TOC section. */
3047 htab = ppc_hash_table (info);
3048 htab->stub_bfd = abfd;
3049 htab->elf.dynobj = abfd;
3050 }
3051
3052 /* Build a name for an entry in the stub hash table. */
3053
3054 static char *
3055 ppc_stub_name (const asection *input_section,
3056 const asection *sym_sec,
3057 const struct ppc_link_hash_entry *h,
3058 const Elf_Internal_Rela *rel)
3059 {
3060 char *stub_name;
3061 bfd_size_type len;
3062
3063 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3064 offsets from a sym as a branch target? In fact, we could
3065 probably assume the addend is always zero. */
3066 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3067
3068 if (h)
3069 {
3070 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3071 stub_name = bfd_malloc (len);
3072 if (stub_name != NULL)
3073 {
3074 sprintf (stub_name, "%08x.%s+%x",
3075 input_section->id & 0xffffffff,
3076 h->elf.root.root.string,
3077 (int) rel->r_addend & 0xffffffff);
3078 }
3079 }
3080 else
3081 {
3082 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3083 stub_name = bfd_malloc (len);
3084 if (stub_name != NULL)
3085 {
3086 sprintf (stub_name, "%08x.%x:%x+%x",
3087 input_section->id & 0xffffffff,
3088 sym_sec->id & 0xffffffff,
3089 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3090 (int) rel->r_addend & 0xffffffff);
3091 }
3092 }
3093 return stub_name;
3094 }
3095
3096 /* Look up an entry in the stub hash. Stub entries are cached because
3097 creating the stub name takes a bit of time. */
3098
3099 static struct ppc_stub_hash_entry *
3100 ppc_get_stub_entry (const asection *input_section,
3101 const asection *sym_sec,
3102 struct elf_link_hash_entry *hash,
3103 const Elf_Internal_Rela *rel,
3104 struct ppc_link_hash_table *htab)
3105 {
3106 struct ppc_stub_hash_entry *stub_entry;
3107 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
3108 const asection *id_sec;
3109
3110 /* If this input section is part of a group of sections sharing one
3111 stub section, then use the id of the first section in the group.
3112 Stub names need to include a section id, as there may well be
3113 more than one stub used to reach say, printf, and we need to
3114 distinguish between them. */
3115 id_sec = htab->stub_group[input_section->id].link_sec;
3116
3117 if (h != NULL && h->stub_cache != NULL
3118 && h->stub_cache->h == h
3119 && h->stub_cache->id_sec == id_sec)
3120 {
3121 stub_entry = h->stub_cache;
3122 }
3123 else
3124 {
3125 char *stub_name;
3126
3127 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3128 if (stub_name == NULL)
3129 return NULL;
3130
3131 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3132 stub_name, FALSE, FALSE);
3133 if (h != NULL)
3134 h->stub_cache = stub_entry;
3135
3136 free (stub_name);
3137 }
3138
3139 return stub_entry;
3140 }
3141
3142 /* Add a new stub entry to the stub hash. Not all fields of the new
3143 stub entry are initialised. */
3144
3145 static struct ppc_stub_hash_entry *
3146 ppc_add_stub (const char *stub_name,
3147 asection *section,
3148 struct ppc_link_hash_table *htab)
3149 {
3150 asection *link_sec;
3151 asection *stub_sec;
3152 struct ppc_stub_hash_entry *stub_entry;
3153
3154 link_sec = htab->stub_group[section->id].link_sec;
3155 stub_sec = htab->stub_group[section->id].stub_sec;
3156 if (stub_sec == NULL)
3157 {
3158 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3159 if (stub_sec == NULL)
3160 {
3161 size_t namelen;
3162 bfd_size_type len;
3163 char *s_name;
3164
3165 namelen = strlen (link_sec->name);
3166 len = namelen + sizeof (STUB_SUFFIX);
3167 s_name = bfd_alloc (htab->stub_bfd, len);
3168 if (s_name == NULL)
3169 return NULL;
3170
3171 memcpy (s_name, link_sec->name, namelen);
3172 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3173 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3174 if (stub_sec == NULL)
3175 return NULL;
3176 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3177 }
3178 htab->stub_group[section->id].stub_sec = stub_sec;
3179 }
3180
3181 /* Enter this entry into the linker stub hash table. */
3182 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3183 TRUE, FALSE);
3184 if (stub_entry == NULL)
3185 {
3186 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3187 bfd_archive_filename (section->owner),
3188 stub_name);
3189 return NULL;
3190 }
3191
3192 stub_entry->stub_sec = stub_sec;
3193 stub_entry->stub_offset = 0;
3194 stub_entry->id_sec = link_sec;
3195 return stub_entry;
3196 }
3197
3198 /* Create sections for linker generated code. */
3199
3200 static bfd_boolean
3201 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3202 {
3203 struct ppc_link_hash_table *htab;
3204 flagword flags;
3205
3206 htab = ppc_hash_table (info);
3207
3208 /* Create .sfpr for code to save and restore fp regs. */
3209 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3210 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3211 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
3212 if (htab->sfpr == NULL
3213 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
3214 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3215 return FALSE;
3216
3217 /* Create .glink for lazy dynamic linking support. */
3218 htab->glink = bfd_make_section_anyway (dynobj, ".glink");
3219 if (htab->glink == NULL
3220 || ! bfd_set_section_flags (dynobj, htab->glink, flags)
3221 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3222 return FALSE;
3223
3224 /* Create .branch_lt for plt_branch stubs. */
3225 flags = (SEC_ALLOC | SEC_LOAD
3226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3227 htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt");
3228 if (htab->brlt == NULL
3229 || ! bfd_set_section_flags (dynobj, htab->brlt, flags)
3230 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3231 return FALSE;
3232
3233 if (info->shared)
3234 {
3235 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3236 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3237 htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
3238 if (!htab->relbrlt
3239 || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags)
3240 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3241 return FALSE;
3242 }
3243 return TRUE;
3244 }
3245
3246 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3247 not already done. */
3248
3249 static bfd_boolean
3250 create_got_section (bfd *abfd, struct bfd_link_info *info)
3251 {
3252 asection *got, *relgot;
3253 flagword flags;
3254 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3255
3256 if (!htab->got)
3257 {
3258 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3259 return FALSE;
3260
3261 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3262 if (!htab->got)
3263 abort ();
3264 }
3265
3266 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3267 | SEC_LINKER_CREATED);
3268
3269 got = bfd_make_section (abfd, ".got");
3270 if (!got
3271 || !bfd_set_section_flags (abfd, got, flags)
3272 || !bfd_set_section_alignment (abfd, got, 3))
3273 return FALSE;
3274
3275 relgot = bfd_make_section (abfd, ".rela.got");
3276 if (!relgot
3277 || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY)
3278 || ! bfd_set_section_alignment (abfd, relgot, 3))
3279 return FALSE;
3280
3281 ppc64_elf_tdata (abfd)->got = got;
3282 ppc64_elf_tdata (abfd)->relgot = relgot;
3283 return TRUE;
3284 }
3285
3286 /* Create the dynamic sections, and set up shortcuts. */
3287
3288 static bfd_boolean
3289 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3290 {
3291 struct ppc_link_hash_table *htab;
3292
3293 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3294 return FALSE;
3295
3296 htab = ppc_hash_table (info);
3297 if (!htab->got)
3298 htab->got = bfd_get_section_by_name (dynobj, ".got");
3299 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3300 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3301 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3302 if (!info->shared)
3303 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3304
3305 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3306 || (!info->shared && !htab->relbss))
3307 abort ();
3308
3309 return TRUE;
3310 }
3311
3312 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3313
3314 static void
3315 ppc64_elf_copy_indirect_symbol
3316 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3317 struct elf_link_hash_entry *dir,
3318 struct elf_link_hash_entry *ind)
3319 {
3320 struct ppc_link_hash_entry *edir, *eind;
3321 flagword mask;
3322
3323 edir = (struct ppc_link_hash_entry *) dir;
3324 eind = (struct ppc_link_hash_entry *) ind;
3325
3326 /* Copy over any dynamic relocs we may have on the indirect sym. */
3327 if (eind->dyn_relocs != NULL)
3328 {
3329 if (edir->dyn_relocs != NULL)
3330 {
3331 struct ppc_dyn_relocs **pp;
3332 struct ppc_dyn_relocs *p;
3333
3334 if (eind->elf.root.type == bfd_link_hash_indirect)
3335 abort ();
3336
3337 /* Add reloc counts against the weak sym to the strong sym
3338 list. Merge any entries against the same section. */
3339 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3340 {
3341 struct ppc_dyn_relocs *q;
3342
3343 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3344 if (q->sec == p->sec)
3345 {
3346 q->pc_count += p->pc_count;
3347 q->count += p->count;
3348 *pp = p->next;
3349 break;
3350 }
3351 if (q == NULL)
3352 pp = &p->next;
3353 }
3354 *pp = edir->dyn_relocs;
3355 }
3356
3357 edir->dyn_relocs = eind->dyn_relocs;
3358 eind->dyn_relocs = NULL;
3359 }
3360
3361 edir->is_func |= eind->is_func;
3362 edir->is_func_descriptor |= eind->is_func_descriptor;
3363 edir->is_entry |= eind->is_entry;
3364 edir->tls_mask |= eind->tls_mask;
3365
3366 mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR
3367 | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF
3368 | ELF_LINK_HASH_NEEDS_PLT);
3369 /* If called to transfer flags for a weakdef during processing
3370 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
3371 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3372 if (ELIMINATE_COPY_RELOCS
3373 && eind->elf.root.type != bfd_link_hash_indirect
3374 && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0)
3375 mask &= ~ELF_LINK_NON_GOT_REF;
3376
3377 edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask;
3378
3379 /* If we were called to copy over info for a weak sym, that's all. */
3380 if (eind->elf.root.type != bfd_link_hash_indirect)
3381 return;
3382
3383 /* Copy over got entries that we may have already seen to the
3384 symbol which just became indirect. */
3385 if (eind->elf.got.glist != NULL)
3386 {
3387 if (edir->elf.got.glist != NULL)
3388 {
3389 struct got_entry **entp;
3390 struct got_entry *ent;
3391
3392 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3393 {
3394 struct got_entry *dent;
3395
3396 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3397 if (dent->addend == ent->addend
3398 && dent->owner == ent->owner
3399 && dent->tls_type == ent->tls_type)
3400 {
3401 dent->got.refcount += ent->got.refcount;
3402 *entp = ent->next;
3403 break;
3404 }
3405 if (dent == NULL)
3406 entp = &ent->next;
3407 }
3408 *entp = edir->elf.got.glist;
3409 }
3410
3411 edir->elf.got.glist = eind->elf.got.glist;
3412 eind->elf.got.glist = NULL;
3413 }
3414
3415 /* And plt entries. */
3416 if (eind->elf.plt.plist != NULL)
3417 {
3418 if (edir->elf.plt.plist != NULL)
3419 {
3420 struct plt_entry **entp;
3421 struct plt_entry *ent;
3422
3423 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
3424 {
3425 struct plt_entry *dent;
3426
3427 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
3428 if (dent->addend == ent->addend)
3429 {
3430 dent->plt.refcount += ent->plt.refcount;
3431 *entp = ent->next;
3432 break;
3433 }
3434 if (dent == NULL)
3435 entp = &ent->next;
3436 }
3437 *entp = edir->elf.plt.plist;
3438 }
3439
3440 edir->elf.plt.plist = eind->elf.plt.plist;
3441 eind->elf.plt.plist = NULL;
3442 }
3443
3444 if (edir->elf.dynindx == -1)
3445 {
3446 edir->elf.dynindx = eind->elf.dynindx;
3447 edir->elf.dynstr_index = eind->elf.dynstr_index;
3448 eind->elf.dynindx = -1;
3449 eind->elf.dynstr_index = 0;
3450 }
3451 else
3452 BFD_ASSERT (eind->elf.dynindx == -1);
3453 }
3454
3455 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
3456 symbols undefined on the command-line. */
3457
3458 bfd_boolean
3459 ppc64_elf_mark_entry_syms (struct bfd_link_info *info)
3460 {
3461 struct ppc_link_hash_table *htab;
3462 struct bfd_sym_chain *sym;
3463
3464 htab = ppc_hash_table (info);
3465 for (sym = info->gc_sym_list; sym; sym = sym->next)
3466 {
3467 struct elf_link_hash_entry *h;
3468
3469 h = elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
3470 if (h != NULL)
3471 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
3472 }
3473 return TRUE;
3474 }
3475
3476 static bfd_boolean
3477 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
3478 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
3479 {
3480 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
3481 char *local_got_tls_masks;
3482
3483 if (local_got_ents == NULL)
3484 {
3485 bfd_size_type size = symtab_hdr->sh_info;
3486
3487 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
3488 local_got_ents = bfd_zalloc (abfd, size);
3489 if (local_got_ents == NULL)
3490 return FALSE;
3491 elf_local_got_ents (abfd) = local_got_ents;
3492 }
3493
3494 if ((tls_type & TLS_EXPLICIT) == 0)
3495 {
3496 struct got_entry *ent;
3497
3498 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
3499 if (ent->addend == r_addend
3500 && ent->owner == abfd
3501 && ent->tls_type == tls_type)
3502 break;
3503 if (ent == NULL)
3504 {
3505 bfd_size_type amt = sizeof (*ent);
3506 ent = bfd_alloc (abfd, amt);
3507 if (ent == NULL)
3508 return FALSE;
3509 ent->next = local_got_ents[r_symndx];
3510 ent->addend = r_addend;
3511 ent->owner = abfd;
3512 ent->tls_type = tls_type;
3513 ent->got.refcount = 0;
3514 local_got_ents[r_symndx] = ent;
3515 }
3516 ent->got.refcount += 1;
3517 }
3518
3519 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
3520 local_got_tls_masks[r_symndx] |= tls_type;
3521 return TRUE;
3522 }
3523
3524 static bfd_boolean
3525 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
3526 {
3527 struct plt_entry *ent;
3528
3529 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
3530 if (ent->addend == addend)
3531 break;
3532 if (ent == NULL)
3533 {
3534 bfd_size_type amt = sizeof (*ent);
3535 ent = bfd_alloc (abfd, amt);
3536 if (ent == NULL)
3537 return FALSE;
3538 ent->next = eh->elf.plt.plist;
3539 ent->addend = addend;
3540 ent->plt.refcount = 0;
3541 eh->elf.plt.plist = ent;
3542 }
3543 ent->plt.refcount += 1;
3544 eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3545 eh->is_func = 1;
3546 return TRUE;
3547 }
3548
3549 /* Find the function descriptor hash entry from the given function code
3550 hash entry FH. Link the entries via their OH fields. */
3551 static struct ppc_link_hash_entry *
3552 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3553 {
3554 struct ppc_link_hash_entry *fdh = (struct ppc_link_hash_entry *) fh->oh;
3555
3556 if (fdh == NULL)
3557 {
3558 const char *fd_name = fh->elf.root.root.string + 1;
3559
3560 fdh = (struct ppc_link_hash_entry *)
3561 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3562 if (fdh != NULL)
3563 {
3564 fdh->is_func_descriptor = 1;
3565 fdh->oh = &fh->elf;
3566 fh->is_func = 1;
3567 fh->oh = &fdh->elf;
3568 }
3569 }
3570
3571 return fdh;
3572 }
3573
3574 /* Look through the relocs for a section during the first phase, and
3575 calculate needed space in the global offset table, procedure
3576 linkage table, and dynamic reloc sections. */
3577
3578 static bfd_boolean
3579 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
3580 asection *sec, const Elf_Internal_Rela *relocs)
3581 {
3582 struct ppc_link_hash_table *htab;
3583 Elf_Internal_Shdr *symtab_hdr;
3584 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3585 const Elf_Internal_Rela *rel;
3586 const Elf_Internal_Rela *rel_end;
3587 asection *sreloc;
3588 asection **opd_sym_map;
3589
3590 if (info->relocatable)
3591 return TRUE;
3592
3593 /* Don't do anything special with non-loaded, non-alloced sections.
3594 In particular, any relocs in such sections should not affect GOT
3595 and PLT reference counting (ie. we don't allow them to create GOT
3596 or PLT entries), there's no possibility or desire to optimize TLS
3597 relocs, and there's not much point in propagating relocs to shared
3598 libs that the dynamic linker won't relocate. */
3599 if ((sec->flags & SEC_ALLOC) == 0)
3600 return TRUE;
3601
3602 htab = ppc_hash_table (info);
3603 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3604
3605 sym_hashes = elf_sym_hashes (abfd);
3606 sym_hashes_end = (sym_hashes
3607 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
3608 - symtab_hdr->sh_info);
3609
3610 sreloc = NULL;
3611 opd_sym_map = NULL;
3612 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
3613 {
3614 /* Garbage collection needs some extra help with .opd sections.
3615 We don't want to necessarily keep everything referenced by
3616 relocs in .opd, as that would keep all functions. Instead,
3617 if we reference an .opd symbol (a function descriptor), we
3618 want to keep the function code symbol's section. This is
3619 easy for global symbols, but for local syms we need to keep
3620 information about the associated function section. Later, if
3621 edit_opd deletes entries, we'll use this array to adjust
3622 local syms in .opd. */
3623 union opd_info {
3624 asection *func_section;
3625 long entry_adjust;
3626 };
3627 bfd_size_type amt;
3628
3629 amt = sec->_raw_size * sizeof (union opd_info) / 24;
3630 opd_sym_map = bfd_zalloc (abfd, amt);
3631 if (opd_sym_map == NULL)
3632 return FALSE;
3633 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
3634 }
3635
3636 if (htab->sfpr == NULL
3637 && !create_linkage_sections (htab->elf.dynobj, info))
3638 return FALSE;
3639
3640 rel_end = relocs + sec->reloc_count;
3641 for (rel = relocs; rel < rel_end; rel++)
3642 {
3643 unsigned long r_symndx;
3644 struct elf_link_hash_entry *h;
3645 enum elf_ppc64_reloc_type r_type;
3646 int tls_type = 0;
3647
3648 r_symndx = ELF64_R_SYM (rel->r_info);
3649 if (r_symndx < symtab_hdr->sh_info)
3650 h = NULL;
3651 else
3652 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3653
3654 r_type = ELF64_R_TYPE (rel->r_info);
3655 switch (r_type)
3656 {
3657 case R_PPC64_GOT_TLSLD16:
3658 case R_PPC64_GOT_TLSLD16_LO:
3659 case R_PPC64_GOT_TLSLD16_HI:
3660 case R_PPC64_GOT_TLSLD16_HA:
3661 ppc64_tlsld_got (abfd)->refcount += 1;
3662 tls_type = TLS_TLS | TLS_LD;
3663 goto dogottls;
3664
3665 case R_PPC64_GOT_TLSGD16:
3666 case R_PPC64_GOT_TLSGD16_LO:
3667 case R_PPC64_GOT_TLSGD16_HI:
3668 case R_PPC64_GOT_TLSGD16_HA:
3669 tls_type = TLS_TLS | TLS_GD;
3670 goto dogottls;
3671
3672 case R_PPC64_GOT_TPREL16_DS:
3673 case R_PPC64_GOT_TPREL16_LO_DS:
3674 case R_PPC64_GOT_TPREL16_HI:
3675 case R_PPC64_GOT_TPREL16_HA:
3676 if (info->shared)
3677 info->flags |= DF_STATIC_TLS;
3678 tls_type = TLS_TLS | TLS_TPREL;
3679 goto dogottls;
3680
3681 case R_PPC64_GOT_DTPREL16_DS:
3682 case R_PPC64_GOT_DTPREL16_LO_DS:
3683 case R_PPC64_GOT_DTPREL16_HI:
3684 case R_PPC64_GOT_DTPREL16_HA:
3685 tls_type = TLS_TLS | TLS_DTPREL;
3686 dogottls:
3687 sec->has_tls_reloc = 1;
3688 /* Fall thru */
3689
3690 case R_PPC64_GOT16:
3691 case R_PPC64_GOT16_DS:
3692 case R_PPC64_GOT16_HA:
3693 case R_PPC64_GOT16_HI:
3694 case R_PPC64_GOT16_LO:
3695 case R_PPC64_GOT16_LO_DS:
3696 /* This symbol requires a global offset table entry. */
3697 sec->has_gp_reloc = 1;
3698 if (ppc64_elf_tdata (abfd)->got == NULL
3699 && !create_got_section (abfd, info))
3700 return FALSE;
3701
3702 if (h != NULL)
3703 {
3704 struct ppc_link_hash_entry *eh;
3705 struct got_entry *ent;
3706
3707 eh = (struct ppc_link_hash_entry *) h;
3708 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
3709 if (ent->addend == rel->r_addend
3710 && ent->owner == abfd
3711 && ent->tls_type == tls_type)
3712 break;
3713 if (ent == NULL)
3714 {
3715 bfd_size_type amt = sizeof (*ent);
3716 ent = bfd_alloc (abfd, amt);
3717 if (ent == NULL)
3718 return FALSE;
3719 ent->next = eh->elf.got.glist;
3720 ent->addend = rel->r_addend;
3721 ent->owner = abfd;
3722 ent->tls_type = tls_type;
3723 ent->got.refcount = 0;
3724 eh->elf.got.glist = ent;
3725 }
3726 ent->got.refcount += 1;
3727 eh->tls_mask |= tls_type;
3728 }
3729 else
3730 /* This is a global offset table entry for a local symbol. */
3731 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3732 rel->r_addend, tls_type))
3733 return FALSE;
3734 break;
3735
3736 case R_PPC64_PLT16_HA:
3737 case R_PPC64_PLT16_HI:
3738 case R_PPC64_PLT16_LO:
3739 case R_PPC64_PLT32:
3740 case R_PPC64_PLT64:
3741 /* This symbol requires a procedure linkage table entry. We
3742 actually build the entry in adjust_dynamic_symbol,
3743 because this might be a case of linking PIC code without
3744 linking in any dynamic objects, in which case we don't
3745 need to generate a procedure linkage table after all. */
3746 if (h == NULL)
3747 {
3748 /* It does not make sense to have a procedure linkage
3749 table entry for a local symbol. */
3750 bfd_set_error (bfd_error_bad_value);
3751 return FALSE;
3752 }
3753 else
3754 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3755 rel->r_addend))
3756 return FALSE;
3757 break;
3758
3759 /* The following relocations don't need to propagate the
3760 relocation if linking a shared object since they are
3761 section relative. */
3762 case R_PPC64_SECTOFF:
3763 case R_PPC64_SECTOFF_LO:
3764 case R_PPC64_SECTOFF_HI:
3765 case R_PPC64_SECTOFF_HA:
3766 case R_PPC64_SECTOFF_DS:
3767 case R_PPC64_SECTOFF_LO_DS:
3768 case R_PPC64_DTPREL16:
3769 case R_PPC64_DTPREL16_LO:
3770 case R_PPC64_DTPREL16_HI:
3771 case R_PPC64_DTPREL16_HA:
3772 case R_PPC64_DTPREL16_DS:
3773 case R_PPC64_DTPREL16_LO_DS:
3774 case R_PPC64_DTPREL16_HIGHER:
3775 case R_PPC64_DTPREL16_HIGHERA:
3776 case R_PPC64_DTPREL16_HIGHEST:
3777 case R_PPC64_DTPREL16_HIGHESTA:
3778 break;
3779
3780 /* Nor do these. */
3781 case R_PPC64_TOC16:
3782 case R_PPC64_TOC16_LO:
3783 case R_PPC64_TOC16_HI:
3784 case R_PPC64_TOC16_HA:
3785 case R_PPC64_TOC16_DS:
3786 case R_PPC64_TOC16_LO_DS:
3787 sec->has_gp_reloc = 1;
3788 break;
3789
3790 /* This relocation describes the C++ object vtable hierarchy.
3791 Reconstruct it for later use during GC. */
3792 case R_PPC64_GNU_VTINHERIT:
3793 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3794 return FALSE;
3795 break;
3796
3797 /* This relocation describes which C++ vtable entries are actually
3798 used. Record for later use during GC. */
3799 case R_PPC64_GNU_VTENTRY:
3800 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3801 return FALSE;
3802 break;
3803
3804 case R_PPC64_REL14:
3805 case R_PPC64_REL14_BRTAKEN:
3806 case R_PPC64_REL14_BRNTAKEN:
3807 htab->has_14bit_branch = 1;
3808 /* Fall through. */
3809
3810 case R_PPC64_REL24:
3811 if (h != NULL
3812 && h->root.root.string[0] == '.'
3813 && h->root.root.string[1] != 0)
3814 {
3815 /* We may need a .plt entry if the function this reloc
3816 refers to is in a shared lib. */
3817 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
3818 rel->r_addend))
3819 return FALSE;
3820 if (h == htab->tls_get_addr)
3821 sec->has_tls_reloc = 1;
3822 else if ((strncmp (h->root.root.string, ".__tls_get_addr", 15)
3823 == 0)
3824 && (h->root.root.string[15] == 0
3825 || h->root.root.string[15] == '@'))
3826 {
3827 htab->tls_get_addr = h;
3828 sec->has_tls_reloc = 1;
3829 }
3830 }
3831 break;
3832
3833 case R_PPC64_TPREL64:
3834 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
3835 if (info->shared)
3836 info->flags |= DF_STATIC_TLS;
3837 goto dotlstoc;
3838
3839 case R_PPC64_DTPMOD64:
3840 if (rel + 1 < rel_end
3841 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
3842 && rel[1].r_offset == rel->r_offset + 8)
3843 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
3844 else
3845 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
3846 goto dotlstoc;
3847
3848 case R_PPC64_DTPREL64:
3849 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
3850 if (rel != relocs
3851 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
3852 && rel[-1].r_offset == rel->r_offset - 8)
3853 /* This is the second reloc of a dtpmod, dtprel pair.
3854 Don't mark with TLS_DTPREL. */
3855 goto dodyn;
3856
3857 dotlstoc:
3858 sec->has_tls_reloc = 1;
3859 if (h != NULL)
3860 {
3861 struct ppc_link_hash_entry *eh;
3862 eh = (struct ppc_link_hash_entry *) h;
3863 eh->tls_mask |= tls_type;
3864 }
3865 else
3866 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
3867 rel->r_addend, tls_type))
3868 return FALSE;
3869
3870 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3871 {
3872 /* One extra to simplify get_tls_mask. */
3873 bfd_size_type amt = sec->_raw_size * sizeof (unsigned) / 8 + 1;
3874 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
3875 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
3876 return FALSE;
3877 }
3878 BFD_ASSERT (rel->r_offset % 8 == 0);
3879 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
3880
3881 /* Mark the second slot of a GD or LD entry.
3882 -1 to indicate GD and -2 to indicate LD. */
3883 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3884 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
3885 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3886 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
3887 goto dodyn;
3888
3889 case R_PPC64_TPREL16:
3890 case R_PPC64_TPREL16_LO:
3891 case R_PPC64_TPREL16_HI:
3892 case R_PPC64_TPREL16_HA:
3893 case R_PPC64_TPREL16_DS:
3894 case R_PPC64_TPREL16_LO_DS:
3895 case R_PPC64_TPREL16_HIGHER:
3896 case R_PPC64_TPREL16_HIGHERA:
3897 case R_PPC64_TPREL16_HIGHEST:
3898 case R_PPC64_TPREL16_HIGHESTA:
3899 if (info->shared)
3900 {
3901 info->flags |= DF_STATIC_TLS;
3902 goto dodyn;
3903 }
3904 break;
3905
3906 case R_PPC64_ADDR64:
3907 if (opd_sym_map != NULL
3908 && h != NULL
3909 && h->root.root.string[0] == '.'
3910 && h->root.root.string[1] != 0)
3911 get_fdh ((struct ppc_link_hash_entry *) h, htab);
3912
3913 if (opd_sym_map != NULL
3914 && h == NULL
3915 && rel + 1 < rel_end
3916 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
3917 {
3918 asection *s;
3919
3920 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
3921 r_symndx);
3922 if (s == NULL)
3923 return FALSE;
3924 else if (s != sec)
3925 opd_sym_map[rel->r_offset / 24] = s;
3926 }
3927 /* Fall through. */
3928
3929 case R_PPC64_REL30:
3930 case R_PPC64_REL32:
3931 case R_PPC64_REL64:
3932 case R_PPC64_ADDR14:
3933 case R_PPC64_ADDR14_BRNTAKEN:
3934 case R_PPC64_ADDR14_BRTAKEN:
3935 case R_PPC64_ADDR16:
3936 case R_PPC64_ADDR16_DS:
3937 case R_PPC64_ADDR16_HA:
3938 case R_PPC64_ADDR16_HI:
3939 case R_PPC64_ADDR16_HIGHER:
3940 case R_PPC64_ADDR16_HIGHERA:
3941 case R_PPC64_ADDR16_HIGHEST:
3942 case R_PPC64_ADDR16_HIGHESTA:
3943 case R_PPC64_ADDR16_LO:
3944 case R_PPC64_ADDR16_LO_DS:
3945 case R_PPC64_ADDR24:
3946 case R_PPC64_ADDR32:
3947 case R_PPC64_UADDR16:
3948 case R_PPC64_UADDR32:
3949 case R_PPC64_UADDR64:
3950 case R_PPC64_TOC:
3951 if (h != NULL && !info->shared)
3952 /* We may need a copy reloc. */
3953 h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
3954
3955 /* Don't propagate .opd relocs. */
3956 if (NO_OPD_RELOCS && opd_sym_map != NULL)
3957 break;
3958
3959 /* If we are creating a shared library, and this is a reloc
3960 against a global symbol, or a non PC relative reloc
3961 against a local symbol, then we need to copy the reloc
3962 into the shared library. However, if we are linking with
3963 -Bsymbolic, we do not need to copy a reloc against a
3964 global symbol which is defined in an object we are
3965 including in the link (i.e., DEF_REGULAR is set). At
3966 this point we have not seen all the input files, so it is
3967 possible that DEF_REGULAR is not set now but will be set
3968 later (it is never cleared). In case of a weak definition,
3969 DEF_REGULAR may be cleared later by a strong definition in
3970 a shared library. We account for that possibility below by
3971 storing information in the dyn_relocs field of the hash
3972 table entry. A similar situation occurs when creating
3973 shared libraries and symbol visibility changes render the
3974 symbol local.
3975
3976 If on the other hand, we are creating an executable, we
3977 may need to keep relocations for symbols satisfied by a
3978 dynamic library if we manage to avoid copy relocs for the
3979 symbol. */
3980 dodyn:
3981 if ((info->shared
3982 && (MUST_BE_DYN_RELOC (r_type)
3983 || (h != NULL
3984 && (! info->symbolic
3985 || h->root.type == bfd_link_hash_defweak
3986 || (h->elf_link_hash_flags
3987 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3988 || (ELIMINATE_COPY_RELOCS
3989 && !info->shared
3990 && h != NULL
3991 && (h->root.type == bfd_link_hash_defweak
3992 || (h->elf_link_hash_flags
3993 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
3994 {
3995 struct ppc_dyn_relocs *p;
3996 struct ppc_dyn_relocs **head;
3997
3998 /* We must copy these reloc types into the output file.
3999 Create a reloc section in dynobj and make room for
4000 this reloc. */
4001 if (sreloc == NULL)
4002 {
4003 const char *name;
4004 bfd *dynobj;
4005
4006 name = (bfd_elf_string_from_elf_section
4007 (abfd,
4008 elf_elfheader (abfd)->e_shstrndx,
4009 elf_section_data (sec)->rel_hdr.sh_name));
4010 if (name == NULL)
4011 return FALSE;
4012
4013 if (strncmp (name, ".rela", 5) != 0
4014 || strcmp (bfd_get_section_name (abfd, sec),
4015 name + 5) != 0)
4016 {
4017 (*_bfd_error_handler)
4018 (_("%s: bad relocation section name `%s\'"),
4019 bfd_archive_filename (abfd), name);
4020 bfd_set_error (bfd_error_bad_value);
4021 }
4022
4023 dynobj = htab->elf.dynobj;
4024 sreloc = bfd_get_section_by_name (dynobj, name);
4025 if (sreloc == NULL)
4026 {
4027 flagword flags;
4028
4029 sreloc = bfd_make_section (dynobj, name);
4030 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4031 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4032 if ((sec->flags & SEC_ALLOC) != 0)
4033 flags |= SEC_ALLOC | SEC_LOAD;
4034 if (sreloc == NULL
4035 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4036 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4037 return FALSE;
4038 }
4039 elf_section_data (sec)->sreloc = sreloc;
4040 }
4041
4042 /* If this is a global symbol, we count the number of
4043 relocations we need for this symbol. */
4044 if (h != NULL)
4045 {
4046 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4047 }
4048 else
4049 {
4050 /* Track dynamic relocs needed for local syms too.
4051 We really need local syms available to do this
4052 easily. Oh well. */
4053
4054 asection *s;
4055 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4056 sec, r_symndx);
4057 if (s == NULL)
4058 return FALSE;
4059
4060 head = ((struct ppc_dyn_relocs **)
4061 &elf_section_data (s)->local_dynrel);
4062 }
4063
4064 p = *head;
4065 if (p == NULL || p->sec != sec)
4066 {
4067 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4068 if (p == NULL)
4069 return FALSE;
4070 p->next = *head;
4071 *head = p;
4072 p->sec = sec;
4073 p->count = 0;
4074 p->pc_count = 0;
4075 }
4076
4077 p->count += 1;
4078 if (!MUST_BE_DYN_RELOC (r_type))
4079 p->pc_count += 1;
4080 }
4081 break;
4082
4083 default:
4084 break;
4085 }
4086 }
4087
4088 return TRUE;
4089 }
4090
4091 /* Return the section that should be marked against GC for a given
4092 relocation. */
4093
4094 static asection *
4095 ppc64_elf_gc_mark_hook (asection *sec,
4096 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4097 Elf_Internal_Rela *rel,
4098 struct elf_link_hash_entry *h,
4099 Elf_Internal_Sym *sym)
4100 {
4101 asection *rsec = NULL;
4102
4103 if (h != NULL)
4104 {
4105 enum elf_ppc64_reloc_type r_type;
4106 struct ppc_link_hash_entry *fdh;
4107
4108 r_type = ELF64_R_TYPE (rel->r_info);
4109 switch (r_type)
4110 {
4111 case R_PPC64_GNU_VTINHERIT:
4112 case R_PPC64_GNU_VTENTRY:
4113 break;
4114
4115 default:
4116 switch (h->root.type)
4117 {
4118 case bfd_link_hash_defined:
4119 case bfd_link_hash_defweak:
4120 fdh = (struct ppc_link_hash_entry *) h;
4121
4122 /* Function descriptor syms cause the associated
4123 function code sym section to be marked. */
4124 if (fdh->is_func_descriptor)
4125 rsec = fdh->oh->root.u.def.section;
4126
4127 /* Function entry syms return NULL if they are in .opd
4128 and are not ._start (or others undefined on the ld
4129 command line). Thus we avoid marking all function
4130 sections, as all functions are referenced in .opd. */
4131 else if ((fdh->oh != NULL
4132 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
4133 || ppc64_elf_section_data (sec)->opd.func_sec == NULL)
4134 rsec = h->root.u.def.section;
4135 break;
4136
4137 case bfd_link_hash_common:
4138 rsec = h->root.u.c.p->section;
4139 break;
4140
4141 default:
4142 break;
4143 }
4144 }
4145 }
4146 else
4147 {
4148 asection **opd_sym_section;
4149
4150 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4151 opd_sym_section = ppc64_elf_section_data (rsec)->opd.func_sec;
4152 if (opd_sym_section != NULL)
4153 rsec = opd_sym_section[sym->st_value / 24];
4154 else if (ppc64_elf_section_data (sec)->opd.func_sec != NULL)
4155 rsec = NULL;
4156 }
4157
4158 return rsec;
4159 }
4160
4161 /* Update the .got, .plt. and dynamic reloc reference counts for the
4162 section being removed. */
4163
4164 static bfd_boolean
4165 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
4166 asection *sec, const Elf_Internal_Rela *relocs)
4167 {
4168 struct ppc_link_hash_table *htab;
4169 Elf_Internal_Shdr *symtab_hdr;
4170 struct elf_link_hash_entry **sym_hashes;
4171 struct got_entry **local_got_ents;
4172 const Elf_Internal_Rela *rel, *relend;
4173
4174 if ((sec->flags & SEC_ALLOC) == 0)
4175 return TRUE;
4176
4177 elf_section_data (sec)->local_dynrel = NULL;
4178
4179 htab = ppc_hash_table (info);
4180 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4181 sym_hashes = elf_sym_hashes (abfd);
4182 local_got_ents = elf_local_got_ents (abfd);
4183
4184 relend = relocs + sec->reloc_count;
4185 for (rel = relocs; rel < relend; rel++)
4186 {
4187 unsigned long r_symndx;
4188 enum elf_ppc64_reloc_type r_type;
4189 struct elf_link_hash_entry *h = NULL;
4190 char tls_type = 0;
4191
4192 r_symndx = ELF64_R_SYM (rel->r_info);
4193 r_type = ELF64_R_TYPE (rel->r_info);
4194 if (r_symndx >= symtab_hdr->sh_info)
4195 {
4196 struct ppc_link_hash_entry *eh;
4197 struct ppc_dyn_relocs **pp;
4198 struct ppc_dyn_relocs *p;
4199
4200 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4201 eh = (struct ppc_link_hash_entry *) h;
4202
4203 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
4204 if (p->sec == sec)
4205 {
4206 /* Everything must go for SEC. */
4207 *pp = p->next;
4208 break;
4209 }
4210 }
4211
4212 switch (r_type)
4213 {
4214 case R_PPC64_GOT_TLSLD16:
4215 case R_PPC64_GOT_TLSLD16_LO:
4216 case R_PPC64_GOT_TLSLD16_HI:
4217 case R_PPC64_GOT_TLSLD16_HA:
4218 ppc64_tlsld_got (abfd)->refcount -= 1;
4219 tls_type = TLS_TLS | TLS_LD;
4220 goto dogot;
4221
4222 case R_PPC64_GOT_TLSGD16:
4223 case R_PPC64_GOT_TLSGD16_LO:
4224 case R_PPC64_GOT_TLSGD16_HI:
4225 case R_PPC64_GOT_TLSGD16_HA:
4226 tls_type = TLS_TLS | TLS_GD;
4227 goto dogot;
4228
4229 case R_PPC64_GOT_TPREL16_DS:
4230 case R_PPC64_GOT_TPREL16_LO_DS:
4231 case R_PPC64_GOT_TPREL16_HI:
4232 case R_PPC64_GOT_TPREL16_HA:
4233 tls_type = TLS_TLS | TLS_TPREL;
4234 goto dogot;
4235
4236 case R_PPC64_GOT_DTPREL16_DS:
4237 case R_PPC64_GOT_DTPREL16_LO_DS:
4238 case R_PPC64_GOT_DTPREL16_HI:
4239 case R_PPC64_GOT_DTPREL16_HA:
4240 tls_type = TLS_TLS | TLS_DTPREL;
4241 goto dogot;
4242
4243 case R_PPC64_GOT16:
4244 case R_PPC64_GOT16_DS:
4245 case R_PPC64_GOT16_HA:
4246 case R_PPC64_GOT16_HI:
4247 case R_PPC64_GOT16_LO:
4248 case R_PPC64_GOT16_LO_DS:
4249 dogot:
4250 {
4251 struct got_entry *ent;
4252
4253 if (h != NULL)
4254 ent = h->got.glist;
4255 else
4256 ent = local_got_ents[r_symndx];
4257
4258 for (; ent != NULL; ent = ent->next)
4259 if (ent->addend == rel->r_addend
4260 && ent->owner == abfd
4261 && ent->tls_type == tls_type)
4262 break;
4263 if (ent == NULL)
4264 abort ();
4265 if (ent->got.refcount > 0)
4266 ent->got.refcount -= 1;
4267 }
4268 break;
4269
4270 case R_PPC64_PLT16_HA:
4271 case R_PPC64_PLT16_HI:
4272 case R_PPC64_PLT16_LO:
4273 case R_PPC64_PLT32:
4274 case R_PPC64_PLT64:
4275 case R_PPC64_REL14:
4276 case R_PPC64_REL14_BRNTAKEN:
4277 case R_PPC64_REL14_BRTAKEN:
4278 case R_PPC64_REL24:
4279 if (h != NULL)
4280 {
4281 struct plt_entry *ent;
4282
4283 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4284 if (ent->addend == rel->r_addend)
4285 break;
4286 if (ent == NULL)
4287 abort ();
4288 if (ent->plt.refcount > 0)
4289 ent->plt.refcount -= 1;
4290 }
4291 break;
4292
4293 default:
4294 break;
4295 }
4296 }
4297 return TRUE;
4298 }
4299
4300 /* Called via elf_link_hash_traverse to transfer dynamic linking
4301 information on function code symbol entries to their corresponding
4302 function descriptor symbol entries. */
4303 static bfd_boolean
4304 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
4305 {
4306 struct bfd_link_info *info;
4307 struct ppc_link_hash_table *htab;
4308 struct plt_entry *ent;
4309 struct ppc_link_hash_entry *fh;
4310 struct ppc_link_hash_entry *fdh;
4311 bfd_boolean force_local;
4312
4313 fh = (struct ppc_link_hash_entry *) h;
4314 if (fh->elf.root.type == bfd_link_hash_indirect)
4315 return TRUE;
4316
4317 if (fh->elf.root.type == bfd_link_hash_warning)
4318 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
4319
4320 info = inf;
4321 htab = ppc_hash_table (info);
4322
4323 /* If this is a function code symbol, transfer dynamic linking
4324 information to the function descriptor symbol. */
4325 if (!fh->is_func)
4326 return TRUE;
4327
4328 if (fh->elf.root.type == bfd_link_hash_undefweak
4329 && (fh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
4330 htab->have_undefweak = TRUE;
4331
4332 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
4333 if (ent->plt.refcount > 0)
4334 break;
4335 if (ent == NULL
4336 || fh->elf.root.root.string[0] != '.'
4337 || fh->elf.root.root.string[1] == '\0')
4338 return TRUE;
4339
4340 /* Find the corresponding function descriptor symbol. Create it
4341 as undefined if necessary. */
4342
4343 fdh = get_fdh (fh, htab);
4344 if (fdh != NULL)
4345 while (fdh->elf.root.type == bfd_link_hash_indirect
4346 || fdh->elf.root.type == bfd_link_hash_warning)
4347 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
4348
4349 if (fdh == NULL
4350 && info->shared
4351 && (fh->elf.root.type == bfd_link_hash_undefined
4352 || fh->elf.root.type == bfd_link_hash_undefweak))
4353 {
4354 bfd *abfd;
4355 asymbol *newsym;
4356 struct bfd_link_hash_entry *bh;
4357
4358 abfd = fh->elf.root.u.undef.abfd;
4359 newsym = bfd_make_empty_symbol (abfd);
4360 newsym->name = fh->elf.root.root.string + 1;
4361 newsym->section = bfd_und_section_ptr;
4362 newsym->value = 0;
4363 newsym->flags = BSF_OBJECT;
4364 if (fh->elf.root.type == bfd_link_hash_undefweak)
4365 newsym->flags |= BSF_WEAK;
4366
4367 bh = &fdh->elf.root;
4368 if ( !(_bfd_generic_link_add_one_symbol
4369 (info, abfd, newsym->name, newsym->flags,
4370 newsym->section, newsym->value, NULL, FALSE, FALSE, &bh)))
4371 {
4372 return FALSE;
4373 }
4374 fdh = (struct ppc_link_hash_entry *) bh;
4375 fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
4376 fdh->elf.size = 24;
4377 fdh->elf.type = STT_OBJECT;
4378 }
4379
4380 if (fdh != NULL
4381 && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
4382 && (info->shared
4383 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
4384 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
4385 || (fdh->elf.root.type == bfd_link_hash_undefweak
4386 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
4387 {
4388 if (fdh->elf.dynindx == -1)
4389 if (! bfd_elf64_link_record_dynamic_symbol (info, &fdh->elf))
4390 return FALSE;
4391 fdh->elf.elf_link_hash_flags
4392 |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR
4393 | ELF_LINK_HASH_REF_DYNAMIC
4394 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
4395 | ELF_LINK_NON_GOT_REF));
4396 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
4397 {
4398 fdh->elf.plt.plist = fh->elf.plt.plist;
4399 fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
4400 }
4401 fdh->is_func_descriptor = 1;
4402 fdh->oh = &fh->elf;
4403 fh->oh = &fdh->elf;
4404 }
4405
4406 /* Now that the info is on the function descriptor, clear the
4407 function code sym info. Any function code syms for which we
4408 don't have a definition in a regular file, we force local.
4409 This prevents a shared library from exporting syms that have
4410 been imported from another library. Function code syms that
4411 are really in the library we must leave global to prevent the
4412 linker dragging in a definition from a static library. */
4413 force_local
4414 = (info->shared
4415 && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4416 || fdh == NULL
4417 || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
4418 || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0));
4419 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
4420
4421 return TRUE;
4422 }
4423
4424 #define MIN_SAVE_FPR 14
4425 #define MAX_SAVE_FPR 31
4426
4427 /* Called near the start of bfd_elf_size_dynamic_sections. We use
4428 this hook to a) provide some gcc support functions, and b) transfer
4429 dynamic linking information gathered so far on function code symbol
4430 entries, to their corresponding function descriptor symbol entries. */
4431 static bfd_boolean
4432 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
4433 struct bfd_link_info *info)
4434 {
4435 struct ppc_link_hash_table *htab;
4436 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
4437 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
4438 unsigned int i;
4439 struct elf_link_hash_entry *h;
4440 bfd_byte *p;
4441 char sym[10];
4442
4443 htab = ppc_hash_table (info);
4444
4445 if (htab->sfpr == NULL)
4446 /* We don't have any relocs. */
4447 return TRUE;
4448
4449 /* First provide any missing ._savef* and ._restf* functions. */
4450 memcpy (sym, "._savef14", 10);
4451 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4452 {
4453 sym[7] = i / 10 + '0';
4454 sym[8] = i % 10 + '0';
4455 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4456 if (h != NULL
4457 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4458 {
4459 if (lowest_savef > i)
4460 lowest_savef = i;
4461 h->root.type = bfd_link_hash_defined;
4462 h->root.u.def.section = htab->sfpr;
4463 h->root.u.def.value = (i - lowest_savef) * 4;
4464 h->type = STT_FUNC;
4465 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4466 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4467 }
4468 }
4469
4470 memcpy (sym, "._restf14", 10);
4471 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
4472 {
4473 sym[7] = i / 10 + '0';
4474 sym[8] = i % 10 + '0';
4475 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
4476 if (h != NULL
4477 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4478 {
4479 if (lowest_restf > i)
4480 lowest_restf = i;
4481 h->root.type = bfd_link_hash_defined;
4482 h->root.u.def.section = htab->sfpr;
4483 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4484 + (i - lowest_restf) * 4);
4485 h->type = STT_FUNC;
4486 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
4487 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
4488 }
4489 }
4490
4491 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
4492
4493 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
4494 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
4495
4496 if (htab->sfpr->_raw_size == 0)
4497 {
4498 if (!htab->have_undefweak)
4499 {
4500 _bfd_strip_section_from_output (info, htab->sfpr);
4501 return TRUE;
4502 }
4503
4504 htab->sfpr->_raw_size = 4;
4505 }
4506
4507 p = bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
4508 if (p == NULL)
4509 return FALSE;
4510 htab->sfpr->contents = p;
4511
4512 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
4513 {
4514 unsigned int fpr = i << 21;
4515 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4516 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
4517 p += 4;
4518 }
4519 if (lowest_savef <= MAX_SAVE_FPR)
4520 {
4521 bfd_put_32 (htab->elf.dynobj, BLR, p);
4522 p += 4;
4523 }
4524
4525 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
4526 {
4527 unsigned int fpr = i << 21;
4528 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
4529 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
4530 p += 4;
4531 }
4532 if (lowest_restf <= MAX_SAVE_FPR
4533 || htab->sfpr->_raw_size == 4)
4534 {
4535 bfd_put_32 (htab->elf.dynobj, BLR, p);
4536 }
4537
4538 return TRUE;
4539 }
4540
4541 /* Adjust a symbol defined by a dynamic object and referenced by a
4542 regular object. The current definition is in some section of the
4543 dynamic object, but we're not including those sections. We have to
4544 change the definition to something the rest of the link can
4545 understand. */
4546
4547 static bfd_boolean
4548 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
4549 struct elf_link_hash_entry *h)
4550 {
4551 struct ppc_link_hash_table *htab;
4552 asection *s;
4553 unsigned int power_of_two;
4554
4555 htab = ppc_hash_table (info);
4556
4557 /* Deal with function syms. */
4558 if (h->type == STT_FUNC
4559 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
4560 {
4561 /* Clear procedure linkage table information for any symbol that
4562 won't need a .plt entry. */
4563 struct plt_entry *ent;
4564 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4565 if (ent->plt.refcount > 0)
4566 break;
4567 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
4568 || ent == NULL
4569 || SYMBOL_CALLS_LOCAL (info, h)
4570 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4571 && h->root.type == bfd_link_hash_undefweak))
4572 {
4573 h->plt.plist = NULL;
4574 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
4575 }
4576 }
4577 else
4578 h->plt.plist = NULL;
4579
4580 /* If this is a weak symbol, and there is a real definition, the
4581 processor independent code will have arranged for us to see the
4582 real definition first, and we can just use the same value. */
4583 if (h->weakdef != NULL)
4584 {
4585 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
4586 || h->weakdef->root.type == bfd_link_hash_defweak);
4587 h->root.u.def.section = h->weakdef->root.u.def.section;
4588 h->root.u.def.value = h->weakdef->root.u.def.value;
4589 if (ELIMINATE_COPY_RELOCS)
4590 h->elf_link_hash_flags
4591 = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF)
4592 | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF));
4593 return TRUE;
4594 }
4595
4596 /* If we are creating a shared library, we must presume that the
4597 only references to the symbol are via the global offset table.
4598 For such cases we need not do anything here; the relocations will
4599 be handled correctly by relocate_section. */
4600 if (info->shared)
4601 return TRUE;
4602
4603 /* If there are no references to this symbol that do not use the
4604 GOT, we don't need to generate a copy reloc. */
4605 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
4606 return TRUE;
4607
4608 if (ELIMINATE_COPY_RELOCS)
4609 {
4610 struct ppc_link_hash_entry * eh;
4611 struct ppc_dyn_relocs *p;
4612
4613 eh = (struct ppc_link_hash_entry *) h;
4614 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4615 {
4616 s = p->sec->output_section;
4617 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4618 break;
4619 }
4620
4621 /* If we didn't find any dynamic relocs in read-only sections, then
4622 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
4623 if (p == NULL)
4624 {
4625 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
4626 return TRUE;
4627 }
4628 }
4629
4630 if (h->plt.plist != NULL)
4631 {
4632 /* We should never get here, but unfortunately there are versions
4633 of gcc out there that improperly (for this ABI) put initialized
4634 function pointers, vtable refs and suchlike in read-only
4635 sections. Allow them to proceed, but warn that this might
4636 break at runtime. */
4637 (*_bfd_error_handler)
4638 (_("copy reloc against `%s' requires lazy plt linking; "
4639 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
4640 h->root.root.string);
4641 }
4642
4643 /* This is a reference to a symbol defined by a dynamic object which
4644 is not a function. */
4645
4646 /* We must allocate the symbol in our .dynbss section, which will
4647 become part of the .bss section of the executable. There will be
4648 an entry for this symbol in the .dynsym section. The dynamic
4649 object will contain position independent code, so all references
4650 from the dynamic object to this symbol will go through the global
4651 offset table. The dynamic linker will use the .dynsym entry to
4652 determine the address it must put in the global offset table, so
4653 both the dynamic object and the regular object will refer to the
4654 same memory location for the variable. */
4655
4656 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
4657 to copy the initial value out of the dynamic object and into the
4658 runtime process image. We need to remember the offset into the
4659 .rela.bss section we are going to use. */
4660 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4661 {
4662 htab->relbss->_raw_size += sizeof (Elf64_External_Rela);
4663 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
4664 }
4665
4666 /* We need to figure out the alignment required for this symbol. I
4667 have no idea how ELF linkers handle this. */
4668 power_of_two = bfd_log2 (h->size);
4669 if (power_of_two > 4)
4670 power_of_two = 4;
4671
4672 /* Apply the required alignment. */
4673 s = htab->dynbss;
4674 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
4675 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
4676 {
4677 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
4678 return FALSE;
4679 }
4680
4681 /* Define the symbol as being at this point in the section. */
4682 h->root.u.def.section = s;
4683 h->root.u.def.value = s->_raw_size;
4684
4685 /* Increment the section size to make room for the symbol. */
4686 s->_raw_size += h->size;
4687
4688 return TRUE;
4689 }
4690
4691 /* If given a function descriptor symbol, hide both the function code
4692 sym and the descriptor. */
4693 static void
4694 ppc64_elf_hide_symbol (struct bfd_link_info *info,
4695 struct elf_link_hash_entry *h,
4696 bfd_boolean force_local)
4697 {
4698 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
4699
4700 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
4701 {
4702 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
4703
4704 if (fh == NULL)
4705 {
4706 const char *p, *q;
4707 struct ppc_link_hash_table *htab;
4708 char save;
4709
4710 /* We aren't supposed to use alloca in BFD because on
4711 systems which do not have alloca the version in libiberty
4712 calls xmalloc, which might cause the program to crash
4713 when it runs out of memory. This function doesn't have a
4714 return status, so there's no way to gracefully return an
4715 error. So cheat. We know that string[-1] can be safely
4716 dereferenced; It's either a string in an ELF string
4717 table, or allocated in an objalloc structure. */
4718
4719 p = h->root.root.string - 1;
4720 save = *p;
4721 *(char *) p = '.';
4722 htab = ppc_hash_table (info);
4723 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4724 *(char *) p = save;
4725
4726 /* Unfortunately, if it so happens that the string we were
4727 looking for was allocated immediately before this string,
4728 then we overwrote the string terminator. That's the only
4729 reason the lookup should fail. */
4730 if (fh == NULL)
4731 {
4732 q = h->root.root.string + strlen (h->root.root.string);
4733 while (q >= h->root.root.string && *q == *p)
4734 --q, --p;
4735 if (q < h->root.root.string && *p == '.')
4736 fh = elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
4737 }
4738 if (fh != NULL)
4739 {
4740 ((struct ppc_link_hash_entry *) h)->oh = fh;
4741 ((struct ppc_link_hash_entry *) fh)->oh = h;
4742 }
4743 }
4744 if (fh != NULL)
4745 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
4746 }
4747 }
4748
4749 static bfd_boolean
4750 get_sym_h (struct elf_link_hash_entry **hp, Elf_Internal_Sym **symp,
4751 asection **symsecp, char **tls_maskp, Elf_Internal_Sym **locsymsp,
4752 unsigned long r_symndx, bfd *ibfd)
4753 {
4754 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4755
4756 if (r_symndx >= symtab_hdr->sh_info)
4757 {
4758 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
4759 struct elf_link_hash_entry *h;
4760
4761 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4762 while (h->root.type == bfd_link_hash_indirect
4763 || h->root.type == bfd_link_hash_warning)
4764 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4765
4766 if (hp != NULL)
4767 *hp = h;
4768
4769 if (symp != NULL)
4770 *symp = NULL;
4771
4772 if (symsecp != NULL)
4773 {
4774 asection *symsec = NULL;
4775 if (h->root.type == bfd_link_hash_defined
4776 || h->root.type == bfd_link_hash_defweak)
4777 symsec = h->root.u.def.section;
4778 *symsecp = symsec;
4779 }
4780
4781 if (tls_maskp != NULL)
4782 {
4783 struct ppc_link_hash_entry *eh;
4784
4785 eh = (struct ppc_link_hash_entry *) h;
4786 *tls_maskp = &eh->tls_mask;
4787 }
4788 }
4789 else
4790 {
4791 Elf_Internal_Sym *sym;
4792 Elf_Internal_Sym *locsyms = *locsymsp;
4793
4794 if (locsyms == NULL)
4795 {
4796 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
4797 if (locsyms == NULL)
4798 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
4799 symtab_hdr->sh_info,
4800 0, NULL, NULL, NULL);
4801 if (locsyms == NULL)
4802 return FALSE;
4803 *locsymsp = locsyms;
4804 }
4805 sym = locsyms + r_symndx;
4806
4807 if (hp != NULL)
4808 *hp = NULL;
4809
4810 if (symp != NULL)
4811 *symp = sym;
4812
4813 if (symsecp != NULL)
4814 {
4815 asection *symsec = NULL;
4816 if ((sym->st_shndx != SHN_UNDEF
4817 && sym->st_shndx < SHN_LORESERVE)
4818 || sym->st_shndx > SHN_HIRESERVE)
4819 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
4820 *symsecp = symsec;
4821 }
4822
4823 if (tls_maskp != NULL)
4824 {
4825 struct got_entry **lgot_ents;
4826 char *tls_mask;
4827
4828 tls_mask = NULL;
4829 lgot_ents = elf_local_got_ents (ibfd);
4830 if (lgot_ents != NULL)
4831 {
4832 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
4833 tls_mask = &lgot_masks[r_symndx];
4834 }
4835 *tls_maskp = tls_mask;
4836 }
4837 }
4838 return TRUE;
4839 }
4840
4841 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
4842 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
4843 type suitable for optimization, and 1 otherwise. */
4844
4845 static int
4846 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
4847 Elf_Internal_Sym **locsymsp,
4848 const Elf_Internal_Rela *rel, bfd *ibfd)
4849 {
4850 unsigned long r_symndx;
4851 int next_r;
4852 struct elf_link_hash_entry *h;
4853 Elf_Internal_Sym *sym;
4854 asection *sec;
4855 bfd_vma off;
4856
4857 r_symndx = ELF64_R_SYM (rel->r_info);
4858 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4859 return 0;
4860
4861 if ((*tls_maskp != NULL && **tls_maskp != 0)
4862 || sec == NULL
4863 || ppc64_elf_section_data (sec)->t_symndx == NULL)
4864 return 1;
4865
4866 /* Look inside a TOC section too. */
4867 if (h != NULL)
4868 {
4869 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4870 off = h->root.u.def.value;
4871 }
4872 else
4873 off = sym->st_value;
4874 off += rel->r_addend;
4875 BFD_ASSERT (off % 8 == 0);
4876 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
4877 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
4878 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
4879 return 0;
4880 if (toc_symndx != NULL)
4881 *toc_symndx = r_symndx;
4882 if ((h == NULL
4883 || ((h->root.type == bfd_link_hash_defined
4884 || h->root.type == bfd_link_hash_defweak)
4885 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
4886 && (next_r == -1 || next_r == -2))
4887 return 1 - next_r;
4888 return 1;
4889 }
4890
4891 /* Adjust all global syms defined in opd sections. In gcc generated
4892 code these will already have been done, but I suppose we have to
4893 cater for all sorts of hand written assembly. */
4894
4895 static bfd_boolean
4896 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
4897 {
4898 struct ppc_link_hash_entry *eh;
4899 asection *sym_sec;
4900 long *opd_adjust;
4901
4902 if (h->root.type == bfd_link_hash_indirect)
4903 return TRUE;
4904
4905 if (h->root.type == bfd_link_hash_warning)
4906 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4907
4908 if (h->root.type != bfd_link_hash_defined
4909 && h->root.type != bfd_link_hash_defweak)
4910 return TRUE;
4911
4912 eh = (struct ppc_link_hash_entry *) h;
4913 if (eh->adjust_done)
4914 return TRUE;
4915
4916 sym_sec = eh->elf.root.u.def.section;
4917 if (sym_sec != NULL
4918 && elf_section_data (sym_sec) != NULL
4919 && (opd_adjust = ppc64_elf_section_data (sym_sec)->opd.adjust) != NULL)
4920 {
4921 eh->elf.root.u.def.value += opd_adjust[eh->elf.root.u.def.value / 24];
4922 eh->adjust_done = 1;
4923 }
4924 return TRUE;
4925 }
4926
4927 /* Remove unused Official Procedure Descriptor entries. Currently we
4928 only remove those associated with functions in discarded link-once
4929 sections, or weakly defined functions that have been overridden. It
4930 would be possible to remove many more entries for statically linked
4931 applications. */
4932
4933 bfd_boolean
4934 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info)
4935 {
4936 bfd *ibfd;
4937 bfd_boolean some_edited = FALSE;
4938
4939 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4940 {
4941 asection *sec;
4942 Elf_Internal_Rela *relstart, *rel, *relend;
4943 Elf_Internal_Shdr *symtab_hdr;
4944 Elf_Internal_Sym *local_syms;
4945 struct elf_link_hash_entry **sym_hashes;
4946 bfd_vma offset;
4947 bfd_size_type amt;
4948 long *adjust;
4949 bfd_boolean need_edit;
4950
4951 sec = bfd_get_section_by_name (ibfd, ".opd");
4952 if (sec == NULL)
4953 continue;
4954
4955 amt = sec->_raw_size * sizeof (long) / 24;
4956 adjust = ppc64_elf_section_data (sec)->opd.adjust;
4957 if (adjust == NULL)
4958 {
4959 /* Must be a ld -r link. ie. check_relocs hasn't been
4960 called. */
4961 adjust = bfd_zalloc (obfd, amt);
4962 ppc64_elf_section_data (sec)->opd.adjust = adjust;
4963 }
4964 memset (adjust, 0, amt);
4965
4966 if (sec->output_section == bfd_abs_section_ptr)
4967 continue;
4968
4969 /* Look through the section relocs. */
4970 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
4971 continue;
4972
4973 local_syms = NULL;
4974 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4975 sym_hashes = elf_sym_hashes (ibfd);
4976
4977 /* Read the relocations. */
4978 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
4979 info->keep_memory);
4980 if (relstart == NULL)
4981 return FALSE;
4982
4983 /* First run through the relocs to check they are sane, and to
4984 determine whether we need to edit this opd section. */
4985 need_edit = FALSE;
4986 offset = 0;
4987 relend = relstart + sec->reloc_count;
4988 for (rel = relstart; rel < relend; )
4989 {
4990 enum elf_ppc64_reloc_type r_type;
4991 unsigned long r_symndx;
4992 asection *sym_sec;
4993 struct elf_link_hash_entry *h;
4994 Elf_Internal_Sym *sym;
4995
4996 /* .opd contains a regular array of 24 byte entries. We're
4997 only interested in the reloc pointing to a function entry
4998 point. */
4999 if (rel->r_offset != offset
5000 || rel + 1 >= relend
5001 || (rel + 1)->r_offset != offset + 8)
5002 {
5003 /* If someone messes with .opd alignment then after a
5004 "ld -r" we might have padding in the middle of .opd.
5005 Also, there's nothing to prevent someone putting
5006 something silly in .opd with the assembler. No .opd
5007 optimization for them! */
5008 (*_bfd_error_handler)
5009 (_("%s: .opd is not a regular array of opd entries"),
5010 bfd_archive_filename (ibfd));
5011 need_edit = FALSE;
5012 break;
5013 }
5014
5015 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
5016 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
5017 {
5018 (*_bfd_error_handler)
5019 (_("%s: unexpected reloc type %u in .opd section"),
5020 bfd_archive_filename (ibfd), r_type);
5021 need_edit = FALSE;
5022 break;
5023 }
5024
5025 r_symndx = ELF64_R_SYM (rel->r_info);
5026 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5027 r_symndx, ibfd))
5028 goto error_ret;
5029
5030 if (sym_sec == NULL || sym_sec->owner == NULL)
5031 {
5032 const char *sym_name;
5033 if (h != NULL)
5034 sym_name = h->root.root.string;
5035 else
5036 sym_name = bfd_elf_local_sym_name (ibfd, sym);
5037
5038 (*_bfd_error_handler)
5039 (_("%s: undefined sym `%s' in .opd section"),
5040 bfd_archive_filename (ibfd),
5041 sym_name);
5042 need_edit = FALSE;
5043 break;
5044 }
5045
5046 /* opd entries are always for functions defined in the
5047 current input bfd. If the symbol isn't defined in the
5048 input bfd, then we won't be using the function in this
5049 bfd; It must be defined in a linkonce section in another
5050 bfd, or is weak. It's also possible that we are
5051 discarding the function due to a linker script /DISCARD/,
5052 which we test for via the output_section. */
5053 if (sym_sec->owner != ibfd
5054 || sym_sec->output_section == bfd_abs_section_ptr)
5055 need_edit = TRUE;
5056
5057 offset += 24;
5058 rel += 2;
5059 /* Allow for the possibility of a reloc on the third word. */
5060 if (rel < relend
5061 && rel->r_offset == offset - 8)
5062 rel += 1;
5063 }
5064
5065 if (need_edit)
5066 {
5067 Elf_Internal_Rela *write_rel;
5068 bfd_byte *rptr, *wptr;
5069 bfd_boolean skip;
5070
5071 /* This seems a waste of time as input .opd sections are all
5072 zeros as generated by gcc, but I suppose there's no reason
5073 this will always be so. We might start putting something in
5074 the third word of .opd entries. */
5075 if ((sec->flags & SEC_IN_MEMORY) == 0)
5076 {
5077 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
5078 if (loc == NULL
5079 || !bfd_get_section_contents (ibfd, sec, loc, 0,
5080 sec->_raw_size))
5081 {
5082 error_ret:
5083 if (local_syms != NULL
5084 && symtab_hdr->contents != (unsigned char *) local_syms)
5085 free (local_syms);
5086 if (elf_section_data (sec)->relocs != relstart)
5087 free (relstart);
5088 return FALSE;
5089 }
5090 sec->contents = loc;
5091 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
5092 }
5093
5094 elf_section_data (sec)->relocs = relstart;
5095
5096 wptr = sec->contents;
5097 rptr = sec->contents;
5098 write_rel = relstart;
5099 skip = FALSE;
5100 offset = 0;
5101 for (rel = relstart; rel < relend; rel++)
5102 {
5103 unsigned long r_symndx;
5104 asection *sym_sec;
5105 struct elf_link_hash_entry *h;
5106 Elf_Internal_Sym *sym;
5107
5108 r_symndx = ELF64_R_SYM (rel->r_info);
5109 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
5110 r_symndx, ibfd))
5111 goto error_ret;
5112
5113 if (rel->r_offset == offset)
5114 {
5115 struct ppc_link_hash_entry *fdh = NULL;
5116 if (h != NULL)
5117 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
5118 ppc_hash_table (info));
5119
5120 skip = (sym_sec->owner != ibfd
5121 || sym_sec->output_section == bfd_abs_section_ptr);
5122 if (skip)
5123 {
5124 if (h != NULL && sym_sec->owner == ibfd)
5125 {
5126 /* Arrange for the function descriptor sym
5127 to be dropped. */
5128 fdh->elf.root.u.def.value = 0;
5129 fdh->elf.root.u.def.section = sym_sec;
5130 }
5131 }
5132 else
5133 {
5134 /* We'll be keeping this opd entry. */
5135
5136 if (h != NULL)
5137 {
5138 /* Redefine the function descriptor symbol to
5139 this location in the opd section. It is
5140 necessary to update the value here rather
5141 than using an array of adjustments as we do
5142 for local symbols, because various places
5143 in the generic ELF code use the value
5144 stored in u.def.value. */
5145 fdh->elf.root.u.def.value = wptr - sec->contents;
5146 fdh->adjust_done = 1;
5147 }
5148
5149 /* Local syms are a bit tricky. We could
5150 tweak them as they can be cached, but
5151 we'd need to look through the local syms
5152 for the function descriptor sym which we
5153 don't have at the moment. So keep an
5154 array of adjustments. */
5155 adjust[rel->r_offset / 24] = wptr - rptr;
5156
5157 if (wptr != rptr)
5158 memcpy (wptr, rptr, 24);
5159 wptr += 24;
5160 }
5161 rptr += 24;
5162 offset += 24;
5163 }
5164
5165 if (skip)
5166 {
5167 BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info)));
5168 if (info->shared)
5169 {
5170 /* We won't be needing dynamic relocs here. */
5171 struct ppc_dyn_relocs **pp;
5172 struct ppc_dyn_relocs *p;
5173
5174 if (h != NULL)
5175 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
5176 else if (sym_sec != NULL)
5177 pp = ((struct ppc_dyn_relocs **)
5178 &elf_section_data (sym_sec)->local_dynrel);
5179 else
5180 pp = ((struct ppc_dyn_relocs **)
5181 &elf_section_data (sec)->local_dynrel);
5182 while ((p = *pp) != NULL)
5183 {
5184 if (p->sec == sec)
5185 {
5186 p->count -= 1;
5187 if (p->count == 0)
5188 *pp = p->next;
5189 break;
5190 }
5191 pp = &p->next;
5192 }
5193 }
5194 }
5195 else
5196 {
5197 /* We need to adjust any reloc offsets to point to the
5198 new opd entries. While we're at it, we may as well
5199 remove redundant relocs. */
5200 rel->r_offset += wptr - rptr;
5201 if (write_rel != rel)
5202 memcpy (write_rel, rel, sizeof (*rel));
5203 ++write_rel;
5204 }
5205 }
5206
5207 sec->_cooked_size = wptr - sec->contents;
5208 sec->reloc_count = write_rel - relstart;
5209 /* Fudge the size too, as this is used later in
5210 elf_bfd_final_link if we are emitting relocs. */
5211 elf_section_data (sec)->rel_hdr.sh_size
5212 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
5213 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
5214 some_edited = TRUE;
5215 }
5216 else if (elf_section_data (sec)->relocs != relstart)
5217 free (relstart);
5218
5219 if (local_syms != NULL
5220 && symtab_hdr->contents != (unsigned char *) local_syms)
5221 {
5222 if (!info->keep_memory)
5223 free (local_syms);
5224 else
5225 symtab_hdr->contents = (unsigned char *) local_syms;
5226 }
5227 }
5228
5229 if (some_edited)
5230 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
5231
5232 return TRUE;
5233 }
5234
5235 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
5236
5237 asection *
5238 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
5239 {
5240 struct ppc_link_hash_table *htab;
5241
5242 htab = ppc_hash_table (info);
5243 if (htab->tls_get_addr != NULL)
5244 {
5245 struct elf_link_hash_entry *h = htab->tls_get_addr;
5246
5247 while (h->root.type == bfd_link_hash_indirect
5248 || h->root.type == bfd_link_hash_warning)
5249 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5250
5251 htab->tls_get_addr = h;
5252 }
5253
5254 return _bfd_elf_tls_setup (obfd, info);
5255 }
5256
5257 /* Run through all the TLS relocs looking for optimization
5258 opportunities. The linker has been hacked (see ppc64elf.em) to do
5259 a preliminary section layout so that we know the TLS segment
5260 offsets. We can't optimize earlier because some optimizations need
5261 to know the tp offset, and we need to optimize before allocating
5262 dynamic relocations. */
5263
5264 bfd_boolean
5265 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
5266 {
5267 bfd *ibfd;
5268 asection *sec;
5269 struct ppc_link_hash_table *htab;
5270
5271 if (info->relocatable || info->shared)
5272 return TRUE;
5273
5274 htab = ppc_hash_table (info);
5275 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5276 {
5277 Elf_Internal_Sym *locsyms = NULL;
5278
5279 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
5280 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
5281 {
5282 Elf_Internal_Rela *relstart, *rel, *relend;
5283 int expecting_tls_get_addr;
5284
5285 /* Read the relocations. */
5286 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
5287 info->keep_memory);
5288 if (relstart == NULL)
5289 return FALSE;
5290
5291 expecting_tls_get_addr = 0;
5292 relend = relstart + sec->reloc_count;
5293 for (rel = relstart; rel < relend; rel++)
5294 {
5295 enum elf_ppc64_reloc_type r_type;
5296 unsigned long r_symndx;
5297 struct elf_link_hash_entry *h;
5298 Elf_Internal_Sym *sym;
5299 asection *sym_sec;
5300 char *tls_mask;
5301 char tls_set, tls_clear, tls_type = 0;
5302 bfd_vma value;
5303 bfd_boolean ok_tprel, is_local;
5304
5305 r_symndx = ELF64_R_SYM (rel->r_info);
5306 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
5307 r_symndx, ibfd))
5308 {
5309 err_free_rel:
5310 if (elf_section_data (sec)->relocs != relstart)
5311 free (relstart);
5312 if (locsyms != NULL
5313 && (elf_tdata (ibfd)->symtab_hdr.contents
5314 != (unsigned char *) locsyms))
5315 free (locsyms);
5316 return FALSE;
5317 }
5318
5319 if (h != NULL)
5320 {
5321 if (h->root.type != bfd_link_hash_defined
5322 && h->root.type != bfd_link_hash_defweak)
5323 continue;
5324 value = h->root.u.def.value;
5325 }
5326 else
5327 {
5328 value = sym->st_value;
5329
5330 if (elf_section_data (sym_sec) != NULL)
5331 {
5332 long *adjust;
5333 adjust = ppc64_elf_section_data (sym_sec)->opd.adjust;
5334 if (adjust != NULL)
5335 value += adjust[value / 24];
5336 }
5337 }
5338
5339 ok_tprel = FALSE;
5340 is_local = FALSE;
5341 if (h == NULL
5342 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5343 {
5344 is_local = TRUE;
5345 value += sym_sec->output_offset;
5346 value += sym_sec->output_section->vma;
5347 value -= htab->elf.tls_sec->vma;
5348 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
5349 < (bfd_vma) 1 << 32);
5350 }
5351
5352 r_type = ELF64_R_TYPE (rel->r_info);
5353 switch (r_type)
5354 {
5355 case R_PPC64_GOT_TLSLD16:
5356 case R_PPC64_GOT_TLSLD16_LO:
5357 case R_PPC64_GOT_TLSLD16_HI:
5358 case R_PPC64_GOT_TLSLD16_HA:
5359 /* These relocs should never be against a symbol
5360 defined in a shared lib. Leave them alone if
5361 that turns out to be the case. */
5362 ppc64_tlsld_got (ibfd)->refcount -= 1;
5363 if (!is_local)
5364 continue;
5365
5366 /* LD -> LE */
5367 tls_set = 0;
5368 tls_clear = TLS_LD;
5369 tls_type = TLS_TLS | TLS_LD;
5370 expecting_tls_get_addr = 1;
5371 break;
5372
5373 case R_PPC64_GOT_TLSGD16:
5374 case R_PPC64_GOT_TLSGD16_LO:
5375 case R_PPC64_GOT_TLSGD16_HI:
5376 case R_PPC64_GOT_TLSGD16_HA:
5377 if (ok_tprel)
5378 /* GD -> LE */
5379 tls_set = 0;
5380 else
5381 /* GD -> IE */
5382 tls_set = TLS_TLS | TLS_TPRELGD;
5383 tls_clear = TLS_GD;
5384 tls_type = TLS_TLS | TLS_GD;
5385 expecting_tls_get_addr = 1;
5386 break;
5387
5388 case R_PPC64_GOT_TPREL16_DS:
5389 case R_PPC64_GOT_TPREL16_LO_DS:
5390 case R_PPC64_GOT_TPREL16_HI:
5391 case R_PPC64_GOT_TPREL16_HA:
5392 expecting_tls_get_addr = 0;
5393 if (ok_tprel)
5394 {
5395 /* IE -> LE */
5396 tls_set = 0;
5397 tls_clear = TLS_TPREL;
5398 tls_type = TLS_TLS | TLS_TPREL;
5399 break;
5400 }
5401 else
5402 continue;
5403
5404 case R_PPC64_REL14:
5405 case R_PPC64_REL14_BRTAKEN:
5406 case R_PPC64_REL14_BRNTAKEN:
5407 case R_PPC64_REL24:
5408 if (h != NULL
5409 && h == htab->tls_get_addr)
5410 {
5411 if (!expecting_tls_get_addr
5412 && rel != relstart
5413 && ((ELF64_R_TYPE (rel[-1].r_info)
5414 == R_PPC64_TOC16)
5415 || (ELF64_R_TYPE (rel[-1].r_info)
5416 == R_PPC64_TOC16_LO)))
5417 {
5418 /* Check for toc tls entries. */
5419 char *toc_tls;
5420 int retval;
5421
5422 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
5423 rel - 1, ibfd);
5424 if (retval == 0)
5425 goto err_free_rel;
5426 if (toc_tls != NULL)
5427 expecting_tls_get_addr = retval > 1;
5428 }
5429
5430 if (expecting_tls_get_addr)
5431 {
5432 struct plt_entry *ent;
5433 for (ent = h->plt.plist; ent; ent = ent->next)
5434 if (ent->addend == 0)
5435 {
5436 if (ent->plt.refcount > 0)
5437 ent->plt.refcount -= 1;
5438 break;
5439 }
5440 }
5441 }
5442 expecting_tls_get_addr = 0;
5443 continue;
5444
5445 case R_PPC64_TPREL64:
5446 expecting_tls_get_addr = 0;
5447 if (ok_tprel)
5448 {
5449 /* IE -> LE */
5450 tls_set = TLS_EXPLICIT;
5451 tls_clear = TLS_TPREL;
5452 break;
5453 }
5454 else
5455 continue;
5456
5457 case R_PPC64_DTPMOD64:
5458 expecting_tls_get_addr = 0;
5459 if (rel + 1 < relend
5460 && (rel[1].r_info
5461 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
5462 && rel[1].r_offset == rel->r_offset + 8)
5463 {
5464 if (ok_tprel)
5465 /* GD -> LE */
5466 tls_set = TLS_EXPLICIT | TLS_GD;
5467 else
5468 /* GD -> IE */
5469 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
5470 tls_clear = TLS_GD;
5471 }
5472 else
5473 {
5474 if (!is_local)
5475 continue;
5476
5477 /* LD -> LE */
5478 tls_set = TLS_EXPLICIT;
5479 tls_clear = TLS_LD;
5480 }
5481 break;
5482
5483 default:
5484 expecting_tls_get_addr = 0;
5485 continue;
5486 }
5487
5488 if ((tls_set & TLS_EXPLICIT) == 0)
5489 {
5490 struct got_entry *ent;
5491
5492 /* Adjust got entry for this reloc. */
5493 if (h != NULL)
5494 ent = h->got.glist;
5495 else
5496 ent = elf_local_got_ents (ibfd)[r_symndx];
5497
5498 for (; ent != NULL; ent = ent->next)
5499 if (ent->addend == rel->r_addend
5500 && ent->owner == ibfd
5501 && ent->tls_type == tls_type)
5502 break;
5503 if (ent == NULL)
5504 abort ();
5505
5506 if (tls_set == 0)
5507 {
5508 /* We managed to get rid of a got entry. */
5509 if (ent->got.refcount > 0)
5510 ent->got.refcount -= 1;
5511 }
5512 }
5513 else if (h != NULL)
5514 {
5515 struct ppc_link_hash_entry * eh;
5516 struct ppc_dyn_relocs **pp;
5517 struct ppc_dyn_relocs *p;
5518
5519 /* Adjust dynamic relocs. */
5520 eh = (struct ppc_link_hash_entry *) h;
5521 for (pp = &eh->dyn_relocs;
5522 (p = *pp) != NULL;
5523 pp = &p->next)
5524 if (p->sec == sec)
5525 {
5526 /* If we got rid of a DTPMOD/DTPREL reloc
5527 pair then we'll lose one or two dyn
5528 relocs. */
5529 if (tls_set == (TLS_EXPLICIT | TLS_GD))
5530 p->count -= 1;
5531 p->count -= 1;
5532 if (p->count == 0)
5533 *pp = p->next;
5534 break;
5535 }
5536 }
5537
5538 *tls_mask |= tls_set;
5539 *tls_mask &= ~tls_clear;
5540 }
5541
5542 if (elf_section_data (sec)->relocs != relstart)
5543 free (relstart);
5544 }
5545
5546 if (locsyms != NULL
5547 && (elf_tdata (ibfd)->symtab_hdr.contents
5548 != (unsigned char *) locsyms))
5549 {
5550 if (!info->keep_memory)
5551 free (locsyms);
5552 else
5553 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
5554 }
5555 }
5556 return TRUE;
5557 }
5558
5559 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
5560 will be called from elflink.h. If elflink.h doesn't call our
5561 finish_dynamic_symbol routine, we'll need to do something about
5562 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
5563 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, SHARED, H) \
5564 ((DYN) \
5565 && ((SHARED) \
5566 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
5567 && ((H)->dynindx != -1 \
5568 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
5569
5570 /* Allocate space in .plt, .got and associated reloc sections for
5571 dynamic relocs. */
5572
5573 static bfd_boolean
5574 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5575 {
5576 struct bfd_link_info *info;
5577 struct ppc_link_hash_table *htab;
5578 asection *s;
5579 struct ppc_link_hash_entry *eh;
5580 struct ppc_dyn_relocs *p;
5581 struct got_entry *gent;
5582
5583 if (h->root.type == bfd_link_hash_indirect)
5584 return TRUE;
5585
5586 if (h->root.type == bfd_link_hash_warning)
5587 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5588
5589 info = (struct bfd_link_info *) inf;
5590 htab = ppc_hash_table (info);
5591
5592 if (htab->elf.dynamic_sections_created
5593 && h->dynindx != -1
5594 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5595 {
5596 struct plt_entry *pent;
5597 bfd_boolean doneone = FALSE;
5598 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
5599 if (pent->plt.refcount > 0)
5600 {
5601 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
5602
5603 /* If this is the first .plt entry, make room for the special
5604 first entry. */
5605 s = htab->plt;
5606 if (s->_raw_size == 0)
5607 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
5608
5609 pent->plt.offset = s->_raw_size;
5610
5611 /* Make room for this entry. */
5612 s->_raw_size += PLT_ENTRY_SIZE;
5613
5614 /* Make room for the .glink code. */
5615 s = htab->glink;
5616 if (s->_raw_size == 0)
5617 s->_raw_size += GLINK_CALL_STUB_SIZE;
5618 /* We need bigger stubs past index 32767. */
5619 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
5620 s->_raw_size += 4;
5621 s->_raw_size += 2*4;
5622
5623 /* We also need to make an entry in the .rela.plt section. */
5624 s = htab->relplt;
5625 s->_raw_size += sizeof (Elf64_External_Rela);
5626 doneone = TRUE;
5627 }
5628 else
5629 pent->plt.offset = (bfd_vma) -1;
5630 if (!doneone)
5631 {
5632 h->plt.plist = NULL;
5633 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5634 }
5635 }
5636 else
5637 {
5638 h->plt.plist = NULL;
5639 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
5640 }
5641
5642 eh = (struct ppc_link_hash_entry *) h;
5643 /* Run through the TLS GD got entries first if we're changing them
5644 to TPREL. */
5645 if ((eh->tls_mask & TLS_TPRELGD) != 0)
5646 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5647 if (gent->got.refcount > 0
5648 && (gent->tls_type & TLS_GD) != 0)
5649 {
5650 /* This was a GD entry that has been converted to TPREL. If
5651 there happens to be a TPREL entry we can use that one. */
5652 struct got_entry *ent;
5653 for (ent = h->got.glist; ent != NULL; ent = ent->next)
5654 if (ent->got.refcount > 0
5655 && (ent->tls_type & TLS_TPREL) != 0
5656 && ent->addend == gent->addend
5657 && ent->owner == gent->owner)
5658 {
5659 gent->got.refcount = 0;
5660 break;
5661 }
5662
5663 /* If not, then we'll be using our own TPREL entry. */
5664 if (gent->got.refcount != 0)
5665 gent->tls_type = TLS_TLS | TLS_TPREL;
5666 }
5667
5668 for (gent = h->got.glist; gent != NULL; gent = gent->next)
5669 if (gent->got.refcount > 0)
5670 {
5671 bfd_boolean dyn;
5672
5673 /* Make sure this symbol is output as a dynamic symbol.
5674 Undefined weak syms won't yet be marked as dynamic,
5675 nor will all TLS symbols. */
5676 if (h->dynindx == -1
5677 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5678 {
5679 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5680 return FALSE;
5681 }
5682
5683 if ((gent->tls_type & TLS_LD) != 0
5684 && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))
5685 {
5686 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
5687 continue;
5688 }
5689
5690 s = ppc64_elf_tdata (gent->owner)->got;
5691 gent->got.offset = s->_raw_size;
5692 s->_raw_size
5693 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
5694 dyn = htab->elf.dynamic_sections_created;
5695 if ((info->shared
5696 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
5697 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5698 || h->root.type != bfd_link_hash_undefweak))
5699 ppc64_elf_tdata (gent->owner)->relgot->_raw_size
5700 += (gent->tls_type & eh->tls_mask & TLS_GD
5701 ? 2 * sizeof (Elf64_External_Rela)
5702 : sizeof (Elf64_External_Rela));
5703 }
5704 else
5705 gent->got.offset = (bfd_vma) -1;
5706
5707 if (eh->dyn_relocs == NULL)
5708 return TRUE;
5709
5710 /* In the shared -Bsymbolic case, discard space allocated for
5711 dynamic pc-relative relocs against symbols which turn out to be
5712 defined in regular objects. For the normal shared case, discard
5713 space for relocs that have become local due to symbol visibility
5714 changes. */
5715
5716 if (info->shared)
5717 {
5718 /* Relocs that use pc_count are those that appear on a call insn,
5719 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
5720 generated via assembly. We want calls to protected symbols to
5721 resolve directly to the function rather than going via the plt.
5722 If people want function pointer comparisons to work as expected
5723 then they should avoid writing weird assembly. */
5724 if (SYMBOL_CALLS_LOCAL (info, h))
5725 {
5726 struct ppc_dyn_relocs **pp;
5727
5728 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5729 {
5730 p->count -= p->pc_count;
5731 p->pc_count = 0;
5732 if (p->count == 0)
5733 *pp = p->next;
5734 else
5735 pp = &p->next;
5736 }
5737 }
5738
5739 /* Also discard relocs on undefined weak syms with non-default
5740 visibility. */
5741 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5742 && h->root.type == bfd_link_hash_undefweak)
5743 eh->dyn_relocs = NULL;
5744 }
5745 else if (ELIMINATE_COPY_RELOCS)
5746 {
5747 /* For the non-shared case, discard space for relocs against
5748 symbols which turn out to need copy relocs or are not
5749 dynamic. */
5750
5751 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5752 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5753 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
5754 {
5755 /* Make sure this symbol is output as a dynamic symbol.
5756 Undefined weak syms won't yet be marked as dynamic. */
5757 if (h->dynindx == -1
5758 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
5759 {
5760 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
5761 return FALSE;
5762 }
5763
5764 /* If that succeeded, we know we'll be keeping all the
5765 relocs. */
5766 if (h->dynindx != -1)
5767 goto keep;
5768 }
5769
5770 eh->dyn_relocs = NULL;
5771
5772 keep: ;
5773 }
5774
5775 /* Finally, allocate space. */
5776 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5777 {
5778 asection *sreloc = elf_section_data (p->sec)->sreloc;
5779 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
5780 }
5781
5782 return TRUE;
5783 }
5784
5785 /* Find any dynamic relocs that apply to read-only sections. */
5786
5787 static bfd_boolean
5788 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5789 {
5790 struct ppc_link_hash_entry *eh;
5791 struct ppc_dyn_relocs *p;
5792
5793 if (h->root.type == bfd_link_hash_warning)
5794 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5795
5796 eh = (struct ppc_link_hash_entry *) h;
5797 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5798 {
5799 asection *s = p->sec->output_section;
5800
5801 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5802 {
5803 struct bfd_link_info *info = inf;
5804
5805 info->flags |= DF_TEXTREL;
5806
5807 /* Not an error, just cut short the traversal. */
5808 return FALSE;
5809 }
5810 }
5811 return TRUE;
5812 }
5813
5814 /* Set the sizes of the dynamic sections. */
5815
5816 static bfd_boolean
5817 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
5818 struct bfd_link_info *info)
5819 {
5820 struct ppc_link_hash_table *htab;
5821 bfd *dynobj;
5822 asection *s;
5823 bfd_boolean relocs;
5824 bfd *ibfd;
5825
5826 htab = ppc_hash_table (info);
5827 dynobj = htab->elf.dynobj;
5828 if (dynobj == NULL)
5829 abort ();
5830
5831 if (htab->elf.dynamic_sections_created)
5832 {
5833 /* Set the contents of the .interp section to the interpreter. */
5834 if (info->executable)
5835 {
5836 s = bfd_get_section_by_name (dynobj, ".interp");
5837 if (s == NULL)
5838 abort ();
5839 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
5840 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5841 }
5842 }
5843
5844 /* Set up .got offsets for local syms, and space for local dynamic
5845 relocs. */
5846 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
5847 {
5848 struct got_entry **lgot_ents;
5849 struct got_entry **end_lgot_ents;
5850 char *lgot_masks;
5851 bfd_size_type locsymcount;
5852 Elf_Internal_Shdr *symtab_hdr;
5853 asection *srel;
5854
5855 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5856 continue;
5857
5858 if (ppc64_tlsld_got (ibfd)->refcount > 0)
5859 {
5860 s = ppc64_elf_tdata (ibfd)->got;
5861 ppc64_tlsld_got (ibfd)->offset = s->_raw_size;
5862 s->_raw_size += 16;
5863 if (info->shared)
5864 {
5865 srel = ppc64_elf_tdata (ibfd)->relgot;
5866 srel->_raw_size += sizeof (Elf64_External_Rela);
5867 }
5868 }
5869 else
5870 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
5871
5872 for (s = ibfd->sections; s != NULL; s = s->next)
5873 {
5874 struct ppc_dyn_relocs *p;
5875
5876 for (p = *((struct ppc_dyn_relocs **)
5877 &elf_section_data (s)->local_dynrel);
5878 p != NULL;
5879 p = p->next)
5880 {
5881 if (!bfd_is_abs_section (p->sec)
5882 && bfd_is_abs_section (p->sec->output_section))
5883 {
5884 /* Input section has been discarded, either because
5885 it is a copy of a linkonce section or due to
5886 linker script /DISCARD/, so we'll be discarding
5887 the relocs too. */
5888 }
5889 else if (p->count != 0)
5890 {
5891 srel = elf_section_data (p->sec)->sreloc;
5892 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
5893 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
5894 info->flags |= DF_TEXTREL;
5895 }
5896 }
5897 }
5898
5899 lgot_ents = elf_local_got_ents (ibfd);
5900 if (!lgot_ents)
5901 continue;
5902
5903 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5904 locsymcount = symtab_hdr->sh_info;
5905 end_lgot_ents = lgot_ents + locsymcount;
5906 lgot_masks = (char *) end_lgot_ents;
5907 s = ppc64_elf_tdata (ibfd)->got;
5908 srel = ppc64_elf_tdata (ibfd)->relgot;
5909 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
5910 {
5911 struct got_entry *ent;
5912
5913 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
5914 if (ent->got.refcount > 0)
5915 {
5916 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
5917 {
5918 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
5919 {
5920 ppc64_tlsld_got (ibfd)->offset = s->_raw_size;
5921 s->_raw_size += 16;
5922 if (info->shared)
5923 srel->_raw_size += sizeof (Elf64_External_Rela);
5924 }
5925 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
5926 }
5927 else
5928 {
5929 ent->got.offset = s->_raw_size;
5930 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
5931 {
5932 s->_raw_size += 16;
5933 if (info->shared)
5934 srel->_raw_size += 2 * sizeof (Elf64_External_Rela);
5935 }
5936 else
5937 {
5938 s->_raw_size += 8;
5939 if (info->shared)
5940 srel->_raw_size += sizeof (Elf64_External_Rela);
5941 }
5942 }
5943 }
5944 else
5945 ent->got.offset = (bfd_vma) -1;
5946 }
5947 }
5948
5949 /* Allocate global sym .plt and .got entries, and space for global
5950 sym dynamic relocs. */
5951 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
5952
5953 /* We now have determined the sizes of the various dynamic sections.
5954 Allocate memory for them. */
5955 relocs = FALSE;
5956 for (s = dynobj->sections; s != NULL; s = s->next)
5957 {
5958 if ((s->flags & SEC_LINKER_CREATED) == 0)
5959 continue;
5960
5961 /* Reset _cooked_size since prelim layout will set it wrongly,
5962 and a non-zero _cooked_size sticks. */
5963 s->_cooked_size = 0;
5964
5965 if (s == htab->brlt || s == htab->relbrlt)
5966 /* These haven't been allocated yet; don't strip. */
5967 continue;
5968 else if (s == htab->got
5969 || s == htab->plt
5970 || s == htab->glink)
5971 {
5972 /* Strip this section if we don't need it; see the
5973 comment below. */
5974 }
5975 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
5976 {
5977 if (s->_raw_size == 0)
5978 {
5979 /* If we don't need this section, strip it from the
5980 output file. This is mostly to handle .rela.bss and
5981 .rela.plt. We must create both sections in
5982 create_dynamic_sections, because they must be created
5983 before the linker maps input sections to output
5984 sections. The linker does that before
5985 adjust_dynamic_symbol is called, and it is that
5986 function which decides whether anything needs to go
5987 into these sections. */
5988 }
5989 else
5990 {
5991 if (s != htab->relplt)
5992 relocs = TRUE;
5993
5994 /* We use the reloc_count field as a counter if we need
5995 to copy relocs into the output file. */
5996 s->reloc_count = 0;
5997 }
5998 }
5999 else
6000 {
6001 /* It's not one of our sections, so don't allocate space. */
6002 continue;
6003 }
6004
6005 if (s->_raw_size == 0)
6006 {
6007 _bfd_strip_section_from_output (info, s);
6008 continue;
6009 }
6010
6011 /* .plt is in the bss section. We don't initialise it. */
6012 if (s == htab->plt)
6013 continue;
6014
6015 /* Allocate memory for the section contents. We use bfd_zalloc
6016 here in case unused entries are not reclaimed before the
6017 section's contents are written out. This should not happen,
6018 but this way if it does we get a R_PPC64_NONE reloc in .rela
6019 sections instead of garbage.
6020 We also rely on the section contents being zero when writing
6021 the GOT. */
6022 s->contents = bfd_zalloc (dynobj, s->_raw_size);
6023 if (s->contents == NULL)
6024 return FALSE;
6025 }
6026
6027 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6028 {
6029 s = ppc64_elf_tdata (ibfd)->got;
6030 if (s != NULL && s != htab->got)
6031 {
6032 s->_cooked_size = 0;
6033 if (s->_raw_size == 0)
6034 _bfd_strip_section_from_output (info, s);
6035 else
6036 {
6037 s->contents = bfd_zalloc (ibfd, s->_raw_size);
6038 if (s->contents == NULL)
6039 return FALSE;
6040 }
6041 }
6042 s = ppc64_elf_tdata (ibfd)->relgot;
6043 if (s != NULL)
6044 {
6045 s->_cooked_size = 0;
6046 if (s->_raw_size == 0)
6047 _bfd_strip_section_from_output (info, s);
6048 else
6049 {
6050 s->contents = bfd_zalloc (ibfd, s->_raw_size);
6051 if (s->contents == NULL)
6052 return FALSE;
6053 relocs = TRUE;
6054 s->reloc_count = 0;
6055 }
6056 }
6057 }
6058
6059 if (htab->elf.dynamic_sections_created)
6060 {
6061 /* Add some entries to the .dynamic section. We fill in the
6062 values later, in ppc64_elf_finish_dynamic_sections, but we
6063 must add the entries now so that we get the correct size for
6064 the .dynamic section. The DT_DEBUG entry is filled in by the
6065 dynamic linker and used by the debugger. */
6066 #define add_dynamic_entry(TAG, VAL) \
6067 bfd_elf64_add_dynamic_entry (info, (TAG), (VAL))
6068
6069 if (info->executable)
6070 {
6071 if (!add_dynamic_entry (DT_DEBUG, 0))
6072 return FALSE;
6073 }
6074
6075 if (htab->plt != NULL && htab->plt->_raw_size != 0)
6076 {
6077 if (!add_dynamic_entry (DT_PLTGOT, 0)
6078 || !add_dynamic_entry (DT_PLTRELSZ, 0)
6079 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
6080 || !add_dynamic_entry (DT_JMPREL, 0)
6081 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
6082 return FALSE;
6083 }
6084
6085 if (NO_OPD_RELOCS)
6086 {
6087 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
6088 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
6089 return FALSE;
6090 }
6091
6092 if (relocs)
6093 {
6094 if (!add_dynamic_entry (DT_RELA, 0)
6095 || !add_dynamic_entry (DT_RELASZ, 0)
6096 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
6097 return FALSE;
6098
6099 /* If any dynamic relocs apply to a read-only section,
6100 then we need a DT_TEXTREL entry. */
6101 if ((info->flags & DF_TEXTREL) == 0)
6102 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
6103
6104 if ((info->flags & DF_TEXTREL) != 0)
6105 {
6106 if (!add_dynamic_entry (DT_TEXTREL, 0))
6107 return FALSE;
6108 }
6109 }
6110 }
6111 #undef add_dynamic_entry
6112
6113 return TRUE;
6114 }
6115
6116 /* Determine the type of stub needed, if any, for a call. */
6117
6118 static inline enum ppc_stub_type
6119 ppc_type_of_stub (asection *input_sec,
6120 const Elf_Internal_Rela *rel,
6121 struct ppc_link_hash_entry **hash,
6122 bfd_vma destination)
6123 {
6124 struct ppc_link_hash_entry *h = *hash;
6125 bfd_vma location;
6126 bfd_vma branch_offset;
6127 bfd_vma max_branch_offset;
6128 enum elf_ppc64_reloc_type r_type;
6129
6130 if (h != NULL)
6131 {
6132 if (h->oh != NULL
6133 && h->oh->dynindx != -1)
6134 {
6135 struct plt_entry *ent;
6136 for (ent = h->oh->plt.plist; ent != NULL; ent = ent->next)
6137 if (ent->addend == rel->r_addend
6138 && ent->plt.offset != (bfd_vma) -1)
6139 {
6140 *hash = (struct ppc_link_hash_entry *) h->oh;
6141 return ppc_stub_plt_call;
6142 }
6143 }
6144
6145 if (!(h->elf.root.type == bfd_link_hash_defined
6146 || h->elf.root.type == bfd_link_hash_defweak)
6147 || h->elf.root.u.def.section->output_section == NULL)
6148 return ppc_stub_none;
6149 }
6150
6151 /* Determine where the call point is. */
6152 location = (input_sec->output_offset
6153 + input_sec->output_section->vma
6154 + rel->r_offset);
6155
6156 branch_offset = destination - location;
6157 r_type = ELF64_R_TYPE (rel->r_info);
6158
6159 /* Determine if a long branch stub is needed. */
6160 max_branch_offset = 1 << 25;
6161 if (r_type != R_PPC64_REL24)
6162 max_branch_offset = 1 << 15;
6163
6164 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
6165 /* We need a stub. Figure out whether a long_branch or plt_branch
6166 is needed later. */
6167 return ppc_stub_long_branch;
6168
6169 return ppc_stub_none;
6170 }
6171
6172 /* Build a .plt call stub. */
6173
6174 static inline bfd_byte *
6175 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
6176 {
6177 #define PPC_LO(v) ((v) & 0xffff)
6178 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6179 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6180
6181 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
6182 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
6183 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6184 if (PPC_HA (offset + 8) != PPC_HA (offset))
6185 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6186 offset += 8;
6187 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
6188 if (PPC_HA (offset + 8) != PPC_HA (offset))
6189 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
6190 offset += 8;
6191 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
6192 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
6193 bfd_put_32 (obfd, BCTR, p), p += 4;
6194 return p;
6195 }
6196
6197 static bfd_boolean
6198 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6199 {
6200 struct ppc_stub_hash_entry *stub_entry;
6201 struct ppc_branch_hash_entry *br_entry;
6202 struct bfd_link_info *info;
6203 struct ppc_link_hash_table *htab;
6204 bfd_byte *loc;
6205 bfd_byte *p;
6206 unsigned int indx;
6207 struct plt_entry *ent;
6208 bfd_vma off;
6209 int size;
6210
6211 /* Massage our args to the form they really have. */
6212 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6213 info = in_arg;
6214
6215 htab = ppc_hash_table (info);
6216
6217 /* Make a note of the offset within the stubs for this entry. */
6218 stub_entry->stub_offset = stub_entry->stub_sec->_cooked_size;
6219 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
6220
6221 htab->stub_count[stub_entry->stub_type - 1] += 1;
6222 switch (stub_entry->stub_type)
6223 {
6224 case ppc_stub_long_branch:
6225 case ppc_stub_long_branch_r2off:
6226 /* Branches are relative. This is where we are going to. */
6227 off = (stub_entry->target_value
6228 + stub_entry->target_section->output_offset
6229 + stub_entry->target_section->output_section->vma);
6230
6231 /* And this is where we are coming from. */
6232 off -= (stub_entry->stub_offset
6233 + stub_entry->stub_sec->output_offset
6234 + stub_entry->stub_sec->output_section->vma);
6235
6236 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
6237 size = 4;
6238 else
6239 {
6240 bfd_vma r2off;
6241
6242 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6243 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6244 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6245 loc += 4;
6246 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6247 loc += 4;
6248 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6249 loc += 4;
6250 off -= 12;
6251 size = 16;
6252 }
6253 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
6254
6255 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
6256 break;
6257
6258 case ppc_stub_plt_branch:
6259 case ppc_stub_plt_branch_r2off:
6260 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6261 stub_entry->root.string + 9,
6262 FALSE, FALSE);
6263 if (br_entry == NULL)
6264 {
6265 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
6266 stub_entry->root.string + 9);
6267 htab->stub_error = TRUE;
6268 return FALSE;
6269 }
6270
6271 off = (stub_entry->target_value
6272 + stub_entry->target_section->output_offset
6273 + stub_entry->target_section->output_section->vma);
6274
6275 bfd_put_64 (htab->brlt->owner, off,
6276 htab->brlt->contents + br_entry->offset);
6277
6278 if (info->shared)
6279 {
6280 /* Create a reloc for the branch lookup table entry. */
6281 Elf_Internal_Rela rela;
6282 bfd_byte *rl;
6283
6284 rela.r_offset = (br_entry->offset
6285 + htab->brlt->output_offset
6286 + htab->brlt->output_section->vma);
6287 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6288 rela.r_addend = off;
6289
6290 rl = htab->relbrlt->contents;
6291 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
6292 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
6293 }
6294
6295 off = (br_entry->offset
6296 + htab->brlt->output_offset
6297 + htab->brlt->output_section->vma
6298 - elf_gp (htab->brlt->output_section->owner)
6299 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6300
6301 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6302 {
6303 (*_bfd_error_handler)
6304 (_("linkage table error against `%s'"),
6305 stub_entry->root.string);
6306 bfd_set_error (bfd_error_bad_value);
6307 htab->stub_error = TRUE;
6308 return FALSE;
6309 }
6310
6311 indx = off;
6312 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
6313 {
6314 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6315 loc += 4;
6316 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6317 size = 16;
6318 }
6319 else
6320 {
6321 bfd_vma r2off;
6322
6323 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
6324 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6325 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
6326 loc += 4;
6327 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
6328 loc += 4;
6329 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
6330 loc += 4;
6331 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
6332 loc += 4;
6333 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
6334 size = 28;
6335 }
6336 loc += 4;
6337 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
6338 loc += 4;
6339 bfd_put_32 (htab->stub_bfd, BCTR, loc);
6340 break;
6341
6342 case ppc_stub_plt_call:
6343 /* Do the best we can for shared libraries built without
6344 exporting ".foo" for each "foo". This can happen when symbol
6345 versioning scripts strip all bar a subset of symbols. */
6346 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
6347 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
6348 {
6349 /* Point the symbol at the stub. There may be multiple stubs,
6350 we don't really care; The main thing is to make this sym
6351 defined somewhere. Maybe defining the symbol in the stub
6352 section is a silly idea. If we didn't do this, htab->top_id
6353 could disappear. */
6354 stub_entry->h->oh->root.type = bfd_link_hash_defined;
6355 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
6356 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
6357 }
6358
6359 /* Now build the stub. */
6360 off = (bfd_vma) -1;
6361 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6362 if (ent->addend == stub_entry->addend)
6363 {
6364 off = ent->plt.offset;
6365 break;
6366 }
6367 if (off >= (bfd_vma) -2)
6368 abort ();
6369
6370 off &= ~ (bfd_vma) 1;
6371 off += (htab->plt->output_offset
6372 + htab->plt->output_section->vma
6373 - elf_gp (htab->plt->output_section->owner)
6374 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6375
6376 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
6377 {
6378 (*_bfd_error_handler)
6379 (_("linkage table error against `%s'"),
6380 stub_entry->h->elf.root.root.string);
6381 bfd_set_error (bfd_error_bad_value);
6382 htab->stub_error = TRUE;
6383 return FALSE;
6384 }
6385
6386 p = build_plt_stub (htab->stub_bfd, loc, off);
6387 size = p - loc;
6388 break;
6389
6390 default:
6391 BFD_FAIL ();
6392 return FALSE;
6393 }
6394
6395 stub_entry->stub_sec->_cooked_size += size;
6396
6397 if (htab->emit_stub_syms
6398 && !(stub_entry->stub_type == ppc_stub_plt_call
6399 && stub_entry->h->oh->root.type == bfd_link_hash_defined
6400 && stub_entry->h->oh->root.u.def.section == stub_entry->stub_sec
6401 && stub_entry->h->oh->root.u.def.value == stub_entry->stub_offset))
6402 {
6403 struct elf_link_hash_entry *h;
6404 h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string,
6405 TRUE, FALSE, FALSE);
6406 if (h == NULL)
6407 return FALSE;
6408 if (h->root.type == bfd_link_hash_new)
6409 {
6410 h->root.type = bfd_link_hash_defined;
6411 h->root.u.def.section = stub_entry->stub_sec;
6412 h->root.u.def.value = stub_entry->stub_offset;
6413 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
6414 | ELF_LINK_HASH_DEF_REGULAR
6415 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
6416 | ELF_LINK_FORCED_LOCAL);
6417 }
6418 }
6419
6420 return TRUE;
6421 }
6422
6423 /* As above, but don't actually build the stub. Just bump offset so
6424 we know stub section sizes, and select plt_branch stubs where
6425 long_branch stubs won't do. */
6426
6427 static bfd_boolean
6428 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
6429 {
6430 struct ppc_stub_hash_entry *stub_entry;
6431 struct bfd_link_info *info;
6432 struct ppc_link_hash_table *htab;
6433 bfd_vma off;
6434 int size;
6435
6436 /* Massage our args to the form they really have. */
6437 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
6438 info = in_arg;
6439
6440 htab = ppc_hash_table (info);
6441
6442 if (stub_entry->stub_type == ppc_stub_plt_call)
6443 {
6444 struct plt_entry *ent;
6445 off = (bfd_vma) -1;
6446 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
6447 if (ent->addend == stub_entry->addend)
6448 {
6449 off = ent->plt.offset & ~(bfd_vma) 1;
6450 break;
6451 }
6452 if (off >= (bfd_vma) -2)
6453 abort ();
6454 off += (htab->plt->output_offset
6455 + htab->plt->output_section->vma
6456 - elf_gp (htab->plt->output_section->owner)
6457 - htab->stub_group[stub_entry->id_sec->id].toc_off);
6458
6459 size = PLT_CALL_STUB_SIZE;
6460 if (PPC_HA (off + 16) != PPC_HA (off))
6461 size += 4;
6462 }
6463 else
6464 {
6465 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
6466 variants. */
6467 off = (stub_entry->target_value
6468 + stub_entry->target_section->output_offset
6469 + stub_entry->target_section->output_section->vma);
6470 off -= (stub_entry->stub_sec->_raw_size
6471 + stub_entry->stub_sec->output_offset
6472 + stub_entry->stub_sec->output_section->vma);
6473
6474 /* Reset the stub type from the plt variant in case we now
6475 can reach with a shorter stub. */
6476 if (stub_entry->stub_type >= ppc_stub_plt_branch)
6477 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
6478
6479 size = 4;
6480 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
6481 {
6482 off -= 12;
6483 size = 16;
6484 }
6485
6486 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
6487 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
6488 {
6489 struct ppc_branch_hash_entry *br_entry;
6490
6491 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
6492 stub_entry->root.string + 9,
6493 TRUE, FALSE);
6494 if (br_entry == NULL)
6495 {
6496 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
6497 stub_entry->root.string + 9);
6498 htab->stub_error = TRUE;
6499 return FALSE;
6500 }
6501
6502 if (br_entry->iter != htab->stub_iteration)
6503 {
6504 br_entry->iter = htab->stub_iteration;
6505 br_entry->offset = htab->brlt->_raw_size;
6506 htab->brlt->_raw_size += 8;
6507
6508 if (info->shared)
6509 htab->relbrlt->_raw_size += sizeof (Elf64_External_Rela);
6510 }
6511
6512 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
6513 size = 16;
6514 if (stub_entry->stub_type != ppc_stub_plt_branch)
6515 size = 28;
6516 }
6517 }
6518
6519 stub_entry->stub_sec->_raw_size += size;
6520 return TRUE;
6521 }
6522
6523 /* Set up various things so that we can make a list of input sections
6524 for each output section included in the link. Returns -1 on error,
6525 0 when no stubs will be needed, and 1 on success. */
6526
6527 int
6528 ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
6529 {
6530 bfd *input_bfd;
6531 int top_id, top_index, id;
6532 asection *section;
6533 asection **input_list;
6534 bfd_size_type amt;
6535 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6536
6537 if (htab->brlt == NULL)
6538 return 0;
6539
6540 /* Find the top input section id. */
6541 for (input_bfd = info->input_bfds, top_id = 3;
6542 input_bfd != NULL;
6543 input_bfd = input_bfd->link_next)
6544 {
6545 for (section = input_bfd->sections;
6546 section != NULL;
6547 section = section->next)
6548 {
6549 if (top_id < section->id)
6550 top_id = section->id;
6551 }
6552 }
6553
6554 htab->top_id = top_id;
6555 amt = sizeof (struct map_stub) * (top_id + 1);
6556 htab->stub_group = bfd_zmalloc (amt);
6557 if (htab->stub_group == NULL)
6558 return -1;
6559
6560 /* Set toc_off for com, und, abs and ind sections. */
6561 for (id = 0; id < 3; id++)
6562 htab->stub_group[id].toc_off = TOC_BASE_OFF;
6563
6564 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
6565
6566 /* We can't use output_bfd->section_count here to find the top output
6567 section index as some sections may have been removed, and
6568 _bfd_strip_section_from_output doesn't renumber the indices. */
6569 for (section = output_bfd->sections, top_index = 0;
6570 section != NULL;
6571 section = section->next)
6572 {
6573 if (top_index < section->index)
6574 top_index = section->index;
6575 }
6576
6577 htab->top_index = top_index;
6578 amt = sizeof (asection *) * (top_index + 1);
6579 input_list = bfd_zmalloc (amt);
6580 htab->input_list = input_list;
6581 if (input_list == NULL)
6582 return -1;
6583
6584 return 1;
6585 }
6586
6587 /* The linker repeatedly calls this function for each TOC input section
6588 and linker generated GOT section. Group input bfds such that the toc
6589 within a group is less than 64k in size. Will break with cute linker
6590 scripts that play games with dot in the output toc section. */
6591
6592 void
6593 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
6594 {
6595 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6596
6597 if (!htab->no_multi_toc)
6598 {
6599 bfd_vma addr = isec->output_offset + isec->output_section->vma;
6600 bfd_vma off = addr - htab->toc_curr;
6601 if (off + isec->_raw_size > 0x10000)
6602 {
6603 htab->toc_curr = addr;
6604 htab->multi_toc_needed = 1;
6605 }
6606 elf_gp (isec->owner) = (htab->toc_curr
6607 - elf_gp (isec->output_section->owner)
6608 + TOC_BASE_OFF);
6609 }
6610 }
6611
6612 /* Called after the last call to the above function. */
6613
6614 void
6615 ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED,
6616 struct bfd_link_info *info)
6617 {
6618 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6619
6620 /* toc_curr tracks the TOC offset used for code sections below in
6621 ppc64_elf_next_input_section. Start off at 0x8000. */
6622 htab->toc_curr = TOC_BASE_OFF;
6623 }
6624
6625 /* No toc references were found in ISEC. If the code in ISEC makes no
6626 calls, then there's no need to use toc adjusting stubs when branching
6627 into ISEC. Actually, indirect calls from ISEC are OK as they will
6628 load r2. */
6629
6630 static int
6631 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
6632 {
6633 bfd_byte *contents;
6634 bfd_size_type i;
6635 int ret;
6636 int branch_ok;
6637
6638 /* We know none of our code bearing sections will need toc stubs. */
6639 if ((isec->flags & SEC_LINKER_CREATED) != 0)
6640 return 0;
6641
6642 if (isec->_raw_size == 0)
6643 return 0;
6644
6645 /* Hack for linux kernel. .fixup contains branches, but only back to
6646 the function that hit an exception. */
6647 branch_ok = strcmp (isec->name, ".fixup") == 0;
6648
6649 contents = elf_section_data (isec)->this_hdr.contents;
6650 if (contents == NULL)
6651 {
6652 contents = bfd_malloc (isec->_raw_size);
6653 if (contents == NULL)
6654 return -1;
6655 if (! bfd_get_section_contents (isec->owner, isec, contents,
6656 0, isec->_raw_size))
6657 {
6658 free (contents);
6659 return -1;
6660 }
6661 if (info->keep_memory)
6662 elf_section_data (isec)->this_hdr.contents = contents;
6663 }
6664
6665 /* Code scan, because we don't necessarily have relocs on calls to
6666 static functions. */
6667 ret = 0;
6668 for (i = 0; i < isec->_raw_size; i += 4)
6669 {
6670 unsigned long insn = bfd_get_32 (isec->owner, contents + i);
6671 /* Is this a branch? */
6672 if ((insn & (0x3f << 26)) == (18 << 26)
6673 /* If branch and link, it's a function call. */
6674 && ((insn & 1) != 0
6675 /* Sibling calls use a plain branch. I don't know a way
6676 of deciding whether a branch is really a sibling call. */
6677 || !branch_ok))
6678 {
6679 ret = 1;
6680 break;
6681 }
6682 }
6683
6684 if (elf_section_data (isec)->this_hdr.contents != contents)
6685 free (contents);
6686 return ret;
6687 }
6688
6689 /* The linker repeatedly calls this function for each input section,
6690 in the order that input sections are linked into output sections.
6691 Build lists of input sections to determine groupings between which
6692 we may insert linker stubs. */
6693
6694 bfd_boolean
6695 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
6696 {
6697 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6698 int ret;
6699
6700 if ((isec->output_section->flags & SEC_CODE) != 0
6701 && isec->output_section->index <= htab->top_index)
6702 {
6703 asection **list = htab->input_list + isec->output_section->index;
6704 /* Steal the link_sec pointer for our list. */
6705 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
6706 /* This happens to make the list in reverse order,
6707 which is what we want. */
6708 PREV_SEC (isec) = *list;
6709 *list = isec;
6710 }
6711
6712 /* If a code section has a function that uses the TOC then we need
6713 to use the right TOC (obviously). Also, make sure that .opd gets
6714 the correct TOC value for R_PPC64_TOC relocs that don't have or
6715 can't find their function symbol (shouldn't ever happen now). */
6716 if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0)
6717 {
6718 if (elf_gp (isec->owner) != 0)
6719 htab->toc_curr = elf_gp (isec->owner);
6720 }
6721 else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0)
6722 return FALSE;
6723 else
6724 isec->has_gp_reloc = ret;
6725
6726 /* Functions that don't use the TOC can belong in any TOC group.
6727 Use the last TOC base. This happens to make _init and _fini
6728 pasting work. */
6729 htab->stub_group[isec->id].toc_off = htab->toc_curr;
6730 return TRUE;
6731 }
6732
6733 /* See whether we can group stub sections together. Grouping stub
6734 sections may result in fewer stubs. More importantly, we need to
6735 put all .init* and .fini* stubs at the beginning of the .init or
6736 .fini output sections respectively, because glibc splits the
6737 _init and _fini functions into multiple parts. Putting a stub in
6738 the middle of a function is not a good idea. */
6739
6740 static void
6741 group_sections (struct ppc_link_hash_table *htab,
6742 bfd_size_type stub_group_size,
6743 bfd_boolean stubs_always_before_branch)
6744 {
6745 asection **list = htab->input_list + htab->top_index;
6746 do
6747 {
6748 asection *tail = *list;
6749 while (tail != NULL)
6750 {
6751 asection *curr;
6752 asection *prev;
6753 bfd_size_type total;
6754 bfd_boolean big_sec;
6755 bfd_vma curr_toc;
6756
6757 curr = tail;
6758 if (tail->_cooked_size)
6759 total = tail->_cooked_size;
6760 else
6761 total = tail->_raw_size;
6762 big_sec = total >= stub_group_size;
6763 curr_toc = htab->stub_group[tail->id].toc_off;
6764
6765 while ((prev = PREV_SEC (curr)) != NULL
6766 && ((total += curr->output_offset - prev->output_offset)
6767 < stub_group_size)
6768 && htab->stub_group[prev->id].toc_off == curr_toc)
6769 curr = prev;
6770
6771 /* OK, the size from the start of CURR to the end is less
6772 than stub_group_size and thus can be handled by one stub
6773 section. (or the tail section is itself larger than
6774 stub_group_size, in which case we may be toast.) We
6775 should really be keeping track of the total size of stubs
6776 added here, as stubs contribute to the final output
6777 section size. That's a little tricky, and this way will
6778 only break if stubs added make the total size more than
6779 2^25, ie. for the default stub_group_size, if stubs total
6780 more than 2097152 bytes, or nearly 75000 plt call stubs. */
6781 do
6782 {
6783 prev = PREV_SEC (tail);
6784 /* Set up this stub group. */
6785 htab->stub_group[tail->id].link_sec = curr;
6786 }
6787 while (tail != curr && (tail = prev) != NULL);
6788
6789 /* But wait, there's more! Input sections up to stub_group_size
6790 bytes before the stub section can be handled by it too.
6791 Don't do this if we have a really large section after the
6792 stubs, as adding more stubs increases the chance that
6793 branches may not reach into the stub section. */
6794 if (!stubs_always_before_branch && !big_sec)
6795 {
6796 total = 0;
6797 while (prev != NULL
6798 && ((total += tail->output_offset - prev->output_offset)
6799 < stub_group_size)
6800 && htab->stub_group[prev->id].toc_off == curr_toc)
6801 {
6802 tail = prev;
6803 prev = PREV_SEC (tail);
6804 htab->stub_group[tail->id].link_sec = curr;
6805 }
6806 }
6807 tail = prev;
6808 }
6809 }
6810 while (list-- != htab->input_list);
6811 free (htab->input_list);
6812 #undef PREV_SEC
6813 }
6814
6815 /* Determine and set the size of the stub section for a final link.
6816
6817 The basic idea here is to examine all the relocations looking for
6818 PC-relative calls to a target that is unreachable with a "bl"
6819 instruction. */
6820
6821 bfd_boolean
6822 ppc64_elf_size_stubs (bfd *output_bfd,
6823 struct bfd_link_info *info,
6824 bfd_signed_vma group_size,
6825 asection *(*add_stub_section) (const char *, asection *),
6826 void (*layout_sections_again) (void))
6827 {
6828 bfd_size_type stub_group_size;
6829 bfd_boolean stubs_always_before_branch;
6830 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6831
6832 /* Stash our params away. */
6833 htab->add_stub_section = add_stub_section;
6834 htab->layout_sections_again = layout_sections_again;
6835 stubs_always_before_branch = group_size < 0;
6836 if (group_size < 0)
6837 stub_group_size = -group_size;
6838 else
6839 stub_group_size = group_size;
6840 if (stub_group_size == 1)
6841 {
6842 /* Default values. */
6843 if (stubs_always_before_branch)
6844 {
6845 stub_group_size = 0x1e00000;
6846 if (htab->has_14bit_branch)
6847 stub_group_size = 0x7800;
6848 }
6849 else
6850 {
6851 stub_group_size = 0x1c00000;
6852 if (htab->has_14bit_branch)
6853 stub_group_size = 0x7000;
6854 }
6855 }
6856
6857 group_sections (htab, stub_group_size, stubs_always_before_branch);
6858
6859 while (1)
6860 {
6861 bfd *input_bfd;
6862 unsigned int bfd_indx;
6863 asection *stub_sec;
6864 bfd_boolean stub_changed;
6865
6866 htab->stub_iteration += 1;
6867 stub_changed = FALSE;
6868
6869 for (input_bfd = info->input_bfds, bfd_indx = 0;
6870 input_bfd != NULL;
6871 input_bfd = input_bfd->link_next, bfd_indx++)
6872 {
6873 Elf_Internal_Shdr *symtab_hdr;
6874 asection *section;
6875 Elf_Internal_Sym *local_syms = NULL;
6876
6877 /* We'll need the symbol table in a second. */
6878 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
6879 if (symtab_hdr->sh_info == 0)
6880 continue;
6881
6882 /* Walk over each section attached to the input bfd. */
6883 for (section = input_bfd->sections;
6884 section != NULL;
6885 section = section->next)
6886 {
6887 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
6888
6889 /* If there aren't any relocs, then there's nothing more
6890 to do. */
6891 if ((section->flags & SEC_RELOC) == 0
6892 || section->reloc_count == 0)
6893 continue;
6894
6895 /* If this section is a link-once section that will be
6896 discarded, then don't create any stubs. */
6897 if (section->output_section == NULL
6898 || section->output_section->owner != output_bfd)
6899 continue;
6900
6901 /* Get the relocs. */
6902 internal_relocs
6903 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
6904 info->keep_memory);
6905 if (internal_relocs == NULL)
6906 goto error_ret_free_local;
6907
6908 /* Now examine each relocation. */
6909 irela = internal_relocs;
6910 irelaend = irela + section->reloc_count;
6911 for (; irela < irelaend; irela++)
6912 {
6913 enum elf_ppc64_reloc_type r_type;
6914 unsigned int r_indx;
6915 enum ppc_stub_type stub_type;
6916 struct ppc_stub_hash_entry *stub_entry;
6917 asection *sym_sec;
6918 bfd_vma sym_value;
6919 bfd_vma destination;
6920 struct ppc_link_hash_entry *hash;
6921 struct elf_link_hash_entry *h;
6922 Elf_Internal_Sym *sym;
6923 char *stub_name;
6924 const asection *id_sec;
6925
6926 r_type = ELF64_R_TYPE (irela->r_info);
6927 r_indx = ELF64_R_SYM (irela->r_info);
6928
6929 if (r_type >= R_PPC64_max)
6930 {
6931 bfd_set_error (bfd_error_bad_value);
6932 goto error_ret_free_internal;
6933 }
6934
6935 /* Only look for stubs on branch instructions. */
6936 if (r_type != R_PPC64_REL24
6937 && r_type != R_PPC64_REL14
6938 && r_type != R_PPC64_REL14_BRTAKEN
6939 && r_type != R_PPC64_REL14_BRNTAKEN)
6940 continue;
6941
6942 /* Now determine the call target, its name, value,
6943 section. */
6944 destination = 0;
6945 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6946 r_indx, input_bfd))
6947 goto error_ret_free_internal;
6948 hash = (struct ppc_link_hash_entry *) h;
6949
6950 if (hash == NULL)
6951 {
6952 /* It's a local symbol. */
6953 sym_value = sym->st_value;
6954 destination = (sym_value + irela->r_addend
6955 + sym_sec->output_offset
6956 + sym_sec->output_section->vma);
6957 }
6958 else
6959 {
6960 /* It's an external symbol. */
6961 sym_value = 0;
6962 if (hash->elf.root.type == bfd_link_hash_defined
6963 || hash->elf.root.type == bfd_link_hash_defweak)
6964 {
6965 sym_value = hash->elf.root.u.def.value;
6966 if (sym_sec->output_section != NULL)
6967 destination = (sym_value + irela->r_addend
6968 + sym_sec->output_offset
6969 + sym_sec->output_section->vma);
6970 }
6971 else if (hash->elf.root.type == bfd_link_hash_undefweak)
6972 ;
6973 else if (hash->elf.root.type == bfd_link_hash_undefined)
6974 ;
6975 else
6976 {
6977 bfd_set_error (bfd_error_bad_value);
6978 goto error_ret_free_internal;
6979 }
6980 }
6981
6982 /* Determine what (if any) linker stub is needed. */
6983 stub_type = ppc_type_of_stub (section, irela, &hash,
6984 destination);
6985
6986 if (stub_type != ppc_stub_plt_call)
6987 {
6988 /* Check whether we need a TOC adjusting stub.
6989 Since the linker pastes together pieces from
6990 different object files when creating the
6991 _init and _fini functions, it may be that a
6992 call to what looks like a local sym is in
6993 fact a call needing a TOC adjustment. */
6994 if (sym_sec != NULL
6995 && sym_sec->output_section != NULL
6996 && (htab->stub_group[sym_sec->id].toc_off
6997 != htab->stub_group[section->id].toc_off)
6998 && sym_sec->has_gp_reloc
6999 && section->has_gp_reloc)
7000 stub_type = ppc_stub_long_branch_r2off;
7001 }
7002
7003 if (stub_type == ppc_stub_none)
7004 continue;
7005
7006 /* __tls_get_addr calls might be eliminated. */
7007 if (stub_type != ppc_stub_plt_call
7008 && hash != NULL
7009 && &hash->elf == htab->tls_get_addr
7010 && section->has_tls_reloc
7011 && irela != internal_relocs)
7012 {
7013 /* Get tls info. */
7014 char *tls_mask;
7015
7016 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
7017 irela - 1, input_bfd))
7018 goto error_ret_free_internal;
7019 if (*tls_mask != 0)
7020 continue;
7021 }
7022
7023 /* Support for grouping stub sections. */
7024 id_sec = htab->stub_group[section->id].link_sec;
7025
7026 /* Get the name of this stub. */
7027 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
7028 if (!stub_name)
7029 goto error_ret_free_internal;
7030
7031 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
7032 stub_name, FALSE, FALSE);
7033 if (stub_entry != NULL)
7034 {
7035 /* The proper stub has already been created. */
7036 free (stub_name);
7037 continue;
7038 }
7039
7040 stub_entry = ppc_add_stub (stub_name, section, htab);
7041 if (stub_entry == NULL)
7042 {
7043 free (stub_name);
7044 error_ret_free_internal:
7045 if (elf_section_data (section)->relocs == NULL)
7046 free (internal_relocs);
7047 error_ret_free_local:
7048 if (local_syms != NULL
7049 && (symtab_hdr->contents
7050 != (unsigned char *) local_syms))
7051 free (local_syms);
7052 return FALSE;
7053 }
7054
7055 stub_entry->stub_type = stub_type;
7056 stub_entry->target_value = sym_value;
7057 stub_entry->target_section = sym_sec;
7058 stub_entry->h = hash;
7059 stub_entry->addend = irela->r_addend;
7060 stub_changed = TRUE;
7061 }
7062
7063 /* We're done with the internal relocs, free them. */
7064 if (elf_section_data (section)->relocs != internal_relocs)
7065 free (internal_relocs);
7066 }
7067
7068 if (local_syms != NULL
7069 && symtab_hdr->contents != (unsigned char *) local_syms)
7070 {
7071 if (!info->keep_memory)
7072 free (local_syms);
7073 else
7074 symtab_hdr->contents = (unsigned char *) local_syms;
7075 }
7076 }
7077
7078 if (!stub_changed)
7079 break;
7080
7081 /* OK, we've added some stubs. Find out the new size of the
7082 stub sections. */
7083 for (stub_sec = htab->stub_bfd->sections;
7084 stub_sec != NULL;
7085 stub_sec = stub_sec->next)
7086 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7087 {
7088 stub_sec->_raw_size = 0;
7089 stub_sec->_cooked_size = 0;
7090 }
7091 htab->brlt->_raw_size = 0;
7092 htab->brlt->_cooked_size = 0;
7093 if (info->shared)
7094 {
7095 htab->relbrlt->_raw_size = 0;
7096 htab->relbrlt->_cooked_size = 0;
7097 }
7098
7099 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
7100
7101 /* Ask the linker to do its stuff. */
7102 (*htab->layout_sections_again) ();
7103 }
7104
7105 /* It would be nice to strip .branch_lt from the output if the
7106 section is empty, but it's too late. If we strip sections here,
7107 the dynamic symbol table is corrupted since the section symbol
7108 for the stripped section isn't written. */
7109
7110 return TRUE;
7111 }
7112
7113 /* Called after we have determined section placement. If sections
7114 move, we'll be called again. Provide a value for TOCstart. */
7115
7116 bfd_vma
7117 ppc64_elf_toc (bfd *obfd)
7118 {
7119 asection *s;
7120 bfd_vma TOCstart;
7121
7122 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
7123 order. The TOC starts where the first of these sections starts. */
7124 s = bfd_get_section_by_name (obfd, ".got");
7125 if (s == NULL)
7126 s = bfd_get_section_by_name (obfd, ".toc");
7127 if (s == NULL)
7128 s = bfd_get_section_by_name (obfd, ".tocbss");
7129 if (s == NULL)
7130 s = bfd_get_section_by_name (obfd, ".plt");
7131 if (s == NULL)
7132 {
7133 /* This may happen for
7134 o references to TOC base (SYM@toc / TOC[tc0]) without a
7135 .toc directive
7136 o bad linker script
7137 o --gc-sections and empty TOC sections
7138
7139 FIXME: Warn user? */
7140
7141 /* Look for a likely section. We probably won't even be
7142 using TOCstart. */
7143 for (s = obfd->sections; s != NULL; s = s->next)
7144 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
7145 == (SEC_ALLOC | SEC_SMALL_DATA))
7146 break;
7147 if (s == NULL)
7148 for (s = obfd->sections; s != NULL; s = s->next)
7149 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
7150 == (SEC_ALLOC | SEC_SMALL_DATA))
7151 break;
7152 if (s == NULL)
7153 for (s = obfd->sections; s != NULL; s = s->next)
7154 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
7155 break;
7156 if (s == NULL)
7157 for (s = obfd->sections; s != NULL; s = s->next)
7158 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
7159 break;
7160 }
7161
7162 TOCstart = 0;
7163 if (s != NULL)
7164 TOCstart = s->output_section->vma + s->output_offset;
7165
7166 return TOCstart;
7167 }
7168
7169 /* Build all the stubs associated with the current output file.
7170 The stubs are kept in a hash table attached to the main linker
7171 hash table. This function is called via gldelf64ppc_finish. */
7172
7173 bfd_boolean
7174 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
7175 struct bfd_link_info *info,
7176 char **stats)
7177 {
7178 struct ppc_link_hash_table *htab = ppc_hash_table (info);
7179 asection *stub_sec;
7180 bfd_byte *p;
7181 int stub_sec_count = 0;
7182
7183 htab->emit_stub_syms = emit_stub_syms;
7184 for (stub_sec = htab->stub_bfd->sections;
7185 stub_sec != NULL;
7186 stub_sec = stub_sec->next)
7187 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7188 {
7189 bfd_size_type size;
7190
7191 /* Allocate memory to hold the linker stubs. */
7192 size = stub_sec->_raw_size;
7193 if (size != 0)
7194 {
7195 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
7196 if (stub_sec->contents == NULL)
7197 return FALSE;
7198 }
7199 stub_sec->_cooked_size = 0;
7200 }
7201
7202 if (htab->plt != NULL)
7203 {
7204 unsigned int indx;
7205 bfd_vma plt0;
7206
7207 /* Build the .glink plt call stub. */
7208 plt0 = (htab->plt->output_section->vma
7209 + htab->plt->output_offset
7210 - (htab->glink->output_section->vma
7211 + htab->glink->output_offset
7212 + GLINK_CALL_STUB_SIZE));
7213 if (plt0 + 0x80008000 > 0xffffffff)
7214 {
7215 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
7216 bfd_set_error (bfd_error_bad_value);
7217 return FALSE;
7218 }
7219
7220 if (htab->emit_stub_syms)
7221 {
7222 struct elf_link_hash_entry *h;
7223 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
7224 if (h == NULL)
7225 return FALSE;
7226 if (h->root.type == bfd_link_hash_new)
7227 {
7228 h->root.type = bfd_link_hash_defined;
7229 h->root.u.def.section = htab->glink;
7230 h->root.u.def.value = 0;
7231 h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR
7232 | ELF_LINK_HASH_DEF_REGULAR
7233 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
7234 | ELF_LINK_FORCED_LOCAL);
7235 }
7236 }
7237 p = htab->glink->contents;
7238 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
7239 p += 4;
7240 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
7241 p += 4;
7242 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
7243 p += 4;
7244 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7245 p += 4;
7246 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
7247 p += 4;
7248 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
7249 p += 4;
7250 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
7251 p += 4;
7252 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
7253 p += 4;
7254 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
7255 p += 4;
7256 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
7257 p += 4;
7258 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
7259 p += 4;
7260 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
7261 p += 4;
7262 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
7263 p += 4;
7264 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
7265 p += 4;
7266 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
7267 p += 4;
7268 bfd_put_32 (htab->glink->owner, BCTR, p);
7269 p += 4;
7270
7271 /* Build the .glink lazy link call stubs. */
7272 indx = 0;
7273 while (p < htab->glink->contents + htab->glink->_raw_size)
7274 {
7275 if (indx < 0x8000)
7276 {
7277 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
7278 p += 4;
7279 }
7280 else
7281 {
7282 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
7283 p += 4;
7284 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
7285 p += 4;
7286 }
7287 bfd_put_32 (htab->glink->owner,
7288 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
7289 indx++;
7290 p += 4;
7291 }
7292 htab->glink->_cooked_size = p - htab->glink->contents;
7293 }
7294
7295 if (htab->brlt->_raw_size != 0)
7296 {
7297 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
7298 htab->brlt->_raw_size);
7299 if (htab->brlt->contents == NULL)
7300 return FALSE;
7301 }
7302 if (info->shared && htab->relbrlt->_raw_size != 0)
7303 {
7304 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
7305 htab->relbrlt->_raw_size);
7306 if (htab->relbrlt->contents == NULL)
7307 return FALSE;
7308 }
7309
7310 /* Build the stubs as directed by the stub hash table. */
7311 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
7312
7313 for (stub_sec = htab->stub_bfd->sections;
7314 stub_sec != NULL;
7315 stub_sec = stub_sec->next)
7316 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
7317 {
7318 stub_sec_count += 1;
7319 if (stub_sec->_raw_size != stub_sec->_cooked_size)
7320 break;
7321 }
7322
7323 if (stub_sec != NULL
7324 || htab->glink->_raw_size != htab->glink->_cooked_size)
7325 {
7326 htab->stub_error = TRUE;
7327 (*_bfd_error_handler) (_("stubs don't match calculated size"));
7328 }
7329
7330 if (htab->stub_error)
7331 return FALSE;
7332
7333 if (stats != NULL)
7334 {
7335 *stats = bfd_malloc (500);
7336 if (*stats == NULL)
7337 return FALSE;
7338
7339 sprintf (*stats, _("linker stubs in %u groups\n"
7340 " branch %lu\n"
7341 " toc adjust %lu\n"
7342 " long branch %lu\n"
7343 " long toc adj %lu\n"
7344 " plt call %lu"),
7345 stub_sec_count,
7346 htab->stub_count[ppc_stub_long_branch - 1],
7347 htab->stub_count[ppc_stub_long_branch_r2off - 1],
7348 htab->stub_count[ppc_stub_plt_branch - 1],
7349 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
7350 htab->stub_count[ppc_stub_plt_call - 1]);
7351 }
7352 return TRUE;
7353 }
7354
7355 /* The RELOCATE_SECTION function is called by the ELF backend linker
7356 to handle the relocations for a section.
7357
7358 The relocs are always passed as Rela structures; if the section
7359 actually uses Rel structures, the r_addend field will always be
7360 zero.
7361
7362 This function is responsible for adjust the section contents as
7363 necessary, and (if using Rela relocs and generating a
7364 relocatable output file) adjusting the reloc addend as
7365 necessary.
7366
7367 This function does not have to worry about setting the reloc
7368 address or the reloc symbol index.
7369
7370 LOCAL_SYMS is a pointer to the swapped in local symbols.
7371
7372 LOCAL_SECTIONS is an array giving the section in the input file
7373 corresponding to the st_shndx field of each local symbol.
7374
7375 The global hash table entry for the global symbols can be found
7376 via elf_sym_hashes (input_bfd).
7377
7378 When generating relocatable output, this function must handle
7379 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
7380 going to be the section symbol corresponding to the output
7381 section, which means that the addend must be adjusted
7382 accordingly. */
7383
7384 static bfd_boolean
7385 ppc64_elf_relocate_section (bfd *output_bfd,
7386 struct bfd_link_info *info,
7387 bfd *input_bfd,
7388 asection *input_section,
7389 bfd_byte *contents,
7390 Elf_Internal_Rela *relocs,
7391 Elf_Internal_Sym *local_syms,
7392 asection **local_sections)
7393 {
7394 struct ppc_link_hash_table *htab;
7395 Elf_Internal_Shdr *symtab_hdr;
7396 struct elf_link_hash_entry **sym_hashes;
7397 Elf_Internal_Rela *rel;
7398 Elf_Internal_Rela *relend;
7399 Elf_Internal_Rela outrel;
7400 bfd_byte *loc;
7401 struct got_entry **local_got_ents;
7402 bfd_vma TOCstart;
7403 bfd_boolean ret = TRUE;
7404 bfd_boolean is_opd;
7405 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
7406 bfd_boolean is_power4 = FALSE;
7407
7408 if (info->relocatable)
7409 return TRUE;
7410
7411 /* Initialize howto table if needed. */
7412 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
7413 ppc_howto_init ();
7414
7415 htab = ppc_hash_table (info);
7416 local_got_ents = elf_local_got_ents (input_bfd);
7417 TOCstart = elf_gp (output_bfd);
7418 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
7419 sym_hashes = elf_sym_hashes (input_bfd);
7420 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
7421
7422 rel = relocs;
7423 relend = relocs + input_section->reloc_count;
7424 for (; rel < relend; rel++)
7425 {
7426 enum elf_ppc64_reloc_type r_type;
7427 bfd_vma addend;
7428 bfd_reloc_status_type r;
7429 Elf_Internal_Sym *sym;
7430 asection *sec;
7431 struct elf_link_hash_entry *h;
7432 struct elf_link_hash_entry *fdh;
7433 const char *sym_name;
7434 unsigned long r_symndx, toc_symndx;
7435 char tls_mask, tls_gd, tls_type;
7436 char sym_type;
7437 bfd_vma relocation;
7438 bfd_boolean unresolved_reloc;
7439 bfd_boolean warned;
7440 unsigned long insn, mask;
7441 struct ppc_stub_hash_entry *stub_entry;
7442 bfd_vma max_br_offset;
7443 bfd_vma from;
7444
7445 r_type = ELF64_R_TYPE (rel->r_info);
7446 r_symndx = ELF64_R_SYM (rel->r_info);
7447
7448 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
7449 symbol of the previous ADDR64 reloc. The symbol gives us the
7450 proper TOC base to use. */
7451 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
7452 && rel != relocs
7453 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
7454 && is_opd)
7455 r_symndx = ELF64_R_SYM (rel[-1].r_info);
7456
7457 sym = NULL;
7458 sec = NULL;
7459 h = NULL;
7460 sym_name = NULL;
7461 unresolved_reloc = FALSE;
7462 warned = FALSE;
7463
7464 if (r_symndx < symtab_hdr->sh_info)
7465 {
7466 /* It's a local symbol. */
7467 sym = local_syms + r_symndx;
7468 sec = local_sections[r_symndx];
7469 sym_name = bfd_elf_local_sym_name (input_bfd, sym);
7470 sym_type = ELF64_ST_TYPE (sym->st_info);
7471 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7472 if (elf_section_data (sec) != NULL)
7473 {
7474 long *opd_sym_adjust;
7475
7476 opd_sym_adjust = ppc64_elf_section_data (sec)->opd.adjust;
7477 if (opd_sym_adjust != NULL)
7478 relocation += opd_sym_adjust[sym->st_value / 24];
7479 }
7480 }
7481 else
7482 {
7483 RELOC_FOR_GLOBAL_SYMBOL (h, sym_hashes, r_symndx,
7484 symtab_hdr, relocation, sec,
7485 unresolved_reloc, info,
7486 warned);
7487 sym_name = h->root.root.string;
7488 sym_type = h->type;
7489 }
7490
7491 /* TLS optimizations. Replace instruction sequences and relocs
7492 based on information we collected in tls_optimize. We edit
7493 RELOCS so that --emit-relocs will output something sensible
7494 for the final instruction stream. */
7495 tls_mask = 0;
7496 tls_gd = 0;
7497 toc_symndx = 0;
7498 if (IS_PPC64_TLS_RELOC (r_type))
7499 {
7500 if (h != NULL)
7501 tls_mask = ((struct ppc_link_hash_entry *) h)->tls_mask;
7502 else if (local_got_ents != NULL)
7503 {
7504 char *lgot_masks;
7505 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
7506 tls_mask = lgot_masks[r_symndx];
7507 }
7508 if (tls_mask == 0 && r_type == R_PPC64_TLS)
7509 {
7510 /* Check for toc tls entries. */
7511 char *toc_tls;
7512
7513 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7514 rel, input_bfd))
7515 return FALSE;
7516
7517 if (toc_tls)
7518 tls_mask = *toc_tls;
7519 }
7520 }
7521
7522 /* Check that tls relocs are used with tls syms, and non-tls
7523 relocs are used with non-tls syms. */
7524 if (r_symndx != 0
7525 && r_type != R_PPC64_NONE
7526 && (h == NULL
7527 || h->root.type == bfd_link_hash_defined
7528 || h->root.type == bfd_link_hash_defweak)
7529 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7530 {
7531 if (r_type == R_PPC64_TLS && tls_mask != 0)
7532 /* R_PPC64_TLS is OK against a symbol in the TOC. */
7533 ;
7534 else
7535 (*_bfd_error_handler)
7536 (sym_type == STT_TLS
7537 ? _("%s(%s+0x%lx): %s used with TLS symbol %s")
7538 : _("%s(%s+0x%lx): %s used with non-TLS symbol %s"),
7539 bfd_archive_filename (input_bfd),
7540 input_section->name,
7541 (long) rel->r_offset,
7542 ppc64_elf_howto_table[r_type]->name,
7543 sym_name);
7544 }
7545
7546 /* Ensure reloc mapping code below stays sane. */
7547 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
7548 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
7549 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
7550 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
7551 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
7552 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
7553 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
7554 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
7555 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
7556 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
7557 abort ();
7558
7559 switch (r_type)
7560 {
7561 default:
7562 break;
7563
7564 case R_PPC64_TOC16:
7565 case R_PPC64_TOC16_LO:
7566 case R_PPC64_TOC16_DS:
7567 case R_PPC64_TOC16_LO_DS:
7568 {
7569 /* Check for toc tls entries. */
7570 char *toc_tls;
7571 int retval;
7572
7573 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
7574 rel, input_bfd);
7575 if (retval == 0)
7576 return FALSE;
7577
7578 if (toc_tls)
7579 {
7580 tls_mask = *toc_tls;
7581 if (r_type == R_PPC64_TOC16_DS
7582 || r_type == R_PPC64_TOC16_LO_DS)
7583 {
7584 if (tls_mask != 0
7585 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
7586 goto toctprel;
7587 }
7588 else
7589 {
7590 /* If we found a GD reloc pair, then we might be
7591 doing a GD->IE transition. */
7592 if (retval == 2)
7593 {
7594 tls_gd = TLS_TPRELGD;
7595 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7596 goto tls_get_addr_check;
7597 }
7598 else if (retval == 3)
7599 {
7600 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7601 goto tls_get_addr_check;
7602 }
7603 }
7604 }
7605 }
7606 break;
7607
7608 case R_PPC64_GOT_TPREL16_DS:
7609 case R_PPC64_GOT_TPREL16_LO_DS:
7610 if (tls_mask != 0
7611 && (tls_mask & TLS_TPREL) == 0)
7612 {
7613 toctprel:
7614 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
7615 insn &= 31 << 21;
7616 insn |= 0x3c0d0000; /* addis 0,13,0 */
7617 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
7618 r_type = R_PPC64_TPREL16_HA;
7619 if (toc_symndx != 0)
7620 {
7621 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7622 /* We changed the symbol. Start over in order to
7623 get h, sym, sec etc. right. */
7624 rel--;
7625 continue;
7626 }
7627 else
7628 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7629 }
7630 break;
7631
7632 case R_PPC64_TLS:
7633 if (tls_mask != 0
7634 && (tls_mask & TLS_TPREL) == 0)
7635 {
7636 bfd_vma rtra;
7637 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
7638 if ((insn & ((0x3f << 26) | (31 << 11)))
7639 == ((31 << 26) | (13 << 11)))
7640 rtra = insn & ((1 << 26) - (1 << 16));
7641 else if ((insn & ((0x3f << 26) | (31 << 16)))
7642 == ((31 << 26) | (13 << 16)))
7643 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
7644 else
7645 abort ();
7646 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
7647 /* add -> addi. */
7648 insn = 14 << 26;
7649 else if ((insn & (31 << 1)) == 23 << 1
7650 && ((insn & (31 << 6)) < 14 << 6
7651 || ((insn & (31 << 6)) >= 16 << 6
7652 && (insn & (31 << 6)) < 24 << 6)))
7653 /* load and store indexed -> dform. */
7654 insn = (32 | ((insn >> 6) & 31)) << 26;
7655 else if ((insn & (31 << 1)) == 21 << 1
7656 && (insn & (0x1a << 6)) == 0)
7657 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
7658 insn = (((58 | ((insn >> 6) & 4)) << 26)
7659 | ((insn >> 6) & 1));
7660 else if ((insn & (31 << 1)) == 21 << 1
7661 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
7662 /* lwax -> lwa. */
7663 insn = (58 << 26) | 2;
7664 else
7665 abort ();
7666 insn |= rtra;
7667 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7668 /* Was PPC64_TLS which sits on insn boundary, now
7669 PPC64_TPREL16_LO which is at insn+2. */
7670 rel->r_offset += 2;
7671 r_type = R_PPC64_TPREL16_LO;
7672 if (toc_symndx != 0)
7673 {
7674 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
7675 /* We changed the symbol. Start over in order to
7676 get h, sym, sec etc. right. */
7677 rel--;
7678 continue;
7679 }
7680 else
7681 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7682 }
7683 break;
7684
7685 case R_PPC64_GOT_TLSGD16_HI:
7686 case R_PPC64_GOT_TLSGD16_HA:
7687 tls_gd = TLS_TPRELGD;
7688 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7689 goto tls_gdld_hi;
7690 break;
7691
7692 case R_PPC64_GOT_TLSLD16_HI:
7693 case R_PPC64_GOT_TLSLD16_HA:
7694 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7695 {
7696 tls_gdld_hi:
7697 if ((tls_mask & tls_gd) != 0)
7698 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7699 + R_PPC64_GOT_TPREL16_DS);
7700 else
7701 {
7702 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
7703 rel->r_offset -= 2;
7704 r_type = R_PPC64_NONE;
7705 }
7706 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7707 }
7708 break;
7709
7710 case R_PPC64_GOT_TLSGD16:
7711 case R_PPC64_GOT_TLSGD16_LO:
7712 tls_gd = TLS_TPRELGD;
7713 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
7714 goto tls_get_addr_check;
7715 break;
7716
7717 case R_PPC64_GOT_TLSLD16:
7718 case R_PPC64_GOT_TLSLD16_LO:
7719 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
7720 {
7721 tls_get_addr_check:
7722 if (rel + 1 < relend)
7723 {
7724 enum elf_ppc64_reloc_type r_type2;
7725 unsigned long r_symndx2;
7726 struct elf_link_hash_entry *h2;
7727 bfd_vma insn1, insn2, insn3;
7728 bfd_vma offset;
7729
7730 /* The next instruction should be a call to
7731 __tls_get_addr. Peek at the reloc to be sure. */
7732 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7733 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7734 if (r_symndx2 < symtab_hdr->sh_info
7735 || (r_type2 != R_PPC64_REL14
7736 && r_type2 != R_PPC64_REL14_BRTAKEN
7737 && r_type2 != R_PPC64_REL14_BRNTAKEN
7738 && r_type2 != R_PPC64_REL24))
7739 break;
7740
7741 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7742 while (h2->root.type == bfd_link_hash_indirect
7743 || h2->root.type == bfd_link_hash_warning)
7744 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
7745 if (h2 == NULL || h2 != htab->tls_get_addr)
7746 break;
7747
7748 /* OK, it checks out. Replace the call. */
7749 offset = rel[1].r_offset;
7750 insn1 = bfd_get_32 (output_bfd,
7751 contents + rel->r_offset - 2);
7752 insn3 = bfd_get_32 (output_bfd,
7753 contents + offset + 4);
7754 if ((tls_mask & tls_gd) != 0)
7755 {
7756 /* IE */
7757 insn1 &= (1 << 26) - (1 << 2);
7758 insn1 |= 58 << 26; /* ld */
7759 insn2 = 0x7c636a14; /* add 3,3,13 */
7760 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
7761 if ((tls_mask & TLS_EXPLICIT) == 0)
7762 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
7763 + R_PPC64_GOT_TPREL16_DS);
7764 else
7765 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
7766 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7767 }
7768 else
7769 {
7770 /* LE */
7771 insn1 = 0x3c6d0000; /* addis 3,13,0 */
7772 insn2 = 0x38630000; /* addi 3,3,0 */
7773 if (tls_gd == 0)
7774 {
7775 /* Was an LD reloc. */
7776 r_symndx = 0;
7777 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7778 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7779 }
7780 else if (toc_symndx != 0)
7781 r_symndx = toc_symndx;
7782 r_type = R_PPC64_TPREL16_HA;
7783 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7784 rel[1].r_info = ELF64_R_INFO (r_symndx,
7785 R_PPC64_TPREL16_LO);
7786 rel[1].r_offset += 2;
7787 }
7788 if (insn3 == NOP
7789 || insn3 == CROR_151515 || insn3 == CROR_313131)
7790 {
7791 insn3 = insn2;
7792 insn2 = NOP;
7793 rel[1].r_offset += 4;
7794 }
7795 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
7796 bfd_put_32 (output_bfd, insn2, contents + offset);
7797 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
7798 if (tls_gd == 0 || toc_symndx != 0)
7799 {
7800 /* We changed the symbol. Start over in order
7801 to get h, sym, sec etc. right. */
7802 rel--;
7803 continue;
7804 }
7805 }
7806 }
7807 break;
7808
7809 case R_PPC64_DTPMOD64:
7810 if (rel + 1 < relend
7811 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
7812 && rel[1].r_offset == rel->r_offset + 8)
7813 {
7814 if ((tls_mask & TLS_GD) == 0)
7815 {
7816 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
7817 if ((tls_mask & TLS_TPRELGD) != 0)
7818 r_type = R_PPC64_TPREL64;
7819 else
7820 {
7821 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7822 r_type = R_PPC64_NONE;
7823 }
7824 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7825 }
7826 }
7827 else
7828 {
7829 if ((tls_mask & TLS_LD) == 0)
7830 {
7831 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
7832 r_type = R_PPC64_NONE;
7833 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7834 }
7835 }
7836 break;
7837
7838 case R_PPC64_TPREL64:
7839 if ((tls_mask & TLS_TPREL) == 0)
7840 {
7841 r_type = R_PPC64_NONE;
7842 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
7843 }
7844 break;
7845 }
7846
7847 /* Handle other relocations that tweak non-addend part of insn. */
7848 insn = 0;
7849 switch (r_type)
7850 {
7851 default:
7852 break;
7853
7854 /* Branch taken prediction relocations. */
7855 case R_PPC64_ADDR14_BRTAKEN:
7856 case R_PPC64_REL14_BRTAKEN:
7857 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
7858 /* Fall thru. */
7859
7860 /* Branch not taken prediction relocations. */
7861 case R_PPC64_ADDR14_BRNTAKEN:
7862 case R_PPC64_REL14_BRNTAKEN:
7863 insn |= bfd_get_32 (output_bfd,
7864 contents + rel->r_offset) & ~(0x01 << 21);
7865 if (is_power4)
7866 {
7867 /* Set 'a' bit. This is 0b00010 in BO field for branch
7868 on CR(BI) insns (BO == 001at or 011at), and 0b01000
7869 for branch on CTR insns (BO == 1a00t or 1a01t). */
7870 if ((insn & (0x14 << 21)) == (0x04 << 21))
7871 insn |= 0x02 << 21;
7872 else if ((insn & (0x14 << 21)) == (0x10 << 21))
7873 insn |= 0x08 << 21;
7874 else
7875 break;
7876 }
7877 else
7878 {
7879 from = (rel->r_offset
7880 + input_section->output_offset
7881 + input_section->output_section->vma);
7882
7883 /* Invert 'y' bit if not the default. */
7884 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
7885 insn ^= 0x01 << 21;
7886 }
7887
7888 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
7889 break;
7890
7891 case R_PPC64_REL24:
7892 /* Calls to functions with a different TOC, such as calls to
7893 shared objects, need to alter the TOC pointer. This is
7894 done using a linkage stub. A REL24 branching to these
7895 linkage stubs needs to be followed by a nop, as the nop
7896 will be replaced with an instruction to restore the TOC
7897 base pointer. */
7898 if (((h != NULL
7899 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
7900 && fdh->plt.plist != NULL)
7901 || ((fdh = h, sec) != NULL
7902 && sec->output_section != NULL
7903 && (htab->stub_group[sec->id].toc_off
7904 != htab->stub_group[input_section->id].toc_off)))
7905 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
7906 rel, htab)) != NULL
7907 && (stub_entry->stub_type == ppc_stub_plt_call
7908 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
7909 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
7910 {
7911 bfd_boolean can_plt_call = 0;
7912
7913 if (rel->r_offset + 8 <= input_section->_cooked_size)
7914 {
7915 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
7916 if (insn == NOP
7917 || insn == CROR_151515 || insn == CROR_313131)
7918 {
7919 bfd_put_32 (input_bfd, LD_R2_40R1,
7920 contents + rel->r_offset + 4);
7921 can_plt_call = 1;
7922 }
7923 }
7924
7925 if (!can_plt_call)
7926 {
7927 if (stub_entry->stub_type == ppc_stub_plt_call)
7928 {
7929 /* If this is a plain branch rather than a branch
7930 and link, don't require a nop. */
7931 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
7932 if ((insn & 1) == 0)
7933 can_plt_call = 1;
7934 }
7935 else if (h != NULL
7936 && strcmp (h->root.root.string,
7937 ".__libc_start_main") == 0)
7938 {
7939 /* Allow crt1 branch to go via a toc adjusting stub. */
7940 can_plt_call = 1;
7941 }
7942 else
7943 {
7944 if (strcmp (input_section->output_section->name,
7945 ".init") == 0
7946 || strcmp (input_section->output_section->name,
7947 ".fini") == 0)
7948 (*_bfd_error_handler)
7949 (_("%s(%s+0x%lx): automatic multiple TOCs "
7950 "not supported using your crt files; "
7951 "recompile with -mminimal-toc or upgrade gcc"),
7952 bfd_archive_filename (input_bfd),
7953 input_section->name,
7954 (long) rel->r_offset);
7955 else
7956 (*_bfd_error_handler)
7957 (_("%s(%s+0x%lx): sibling call optimization to `%s' "
7958 "does not allow automatic multiple TOCs; "
7959 "recompile with -mminimal-toc or "
7960 "-fno-optimize-sibling-calls, "
7961 "or make `%s' extern"),
7962 bfd_archive_filename (input_bfd),
7963 input_section->name,
7964 (long) rel->r_offset,
7965 sym_name,
7966 sym_name);
7967 bfd_set_error (bfd_error_bad_value);
7968 ret = FALSE;
7969 }
7970 }
7971
7972 if (can_plt_call)
7973 {
7974 relocation = (stub_entry->stub_offset
7975 + stub_entry->stub_sec->output_offset
7976 + stub_entry->stub_sec->output_section->vma);
7977 if (stub_entry->stub_type == ppc_stub_plt_call)
7978 unresolved_reloc = FALSE;
7979 }
7980 }
7981
7982 if (h != NULL
7983 && h->root.type == bfd_link_hash_undefweak
7984 && relocation == 0
7985 && rel->r_addend == 0)
7986 {
7987 /* Tweak calls to undefined weak functions to point at a
7988 blr. We can thus call a weak function without first
7989 checking whether the function is defined. We have a
7990 blr at the end of .sfpr. */
7991 BFD_ASSERT (htab->sfpr->_raw_size != 0);
7992 relocation = (htab->sfpr->_raw_size - 4
7993 + htab->sfpr->output_offset
7994 + htab->sfpr->output_section->vma);
7995 from = (rel->r_offset
7996 + input_section->output_offset
7997 + input_section->output_section->vma);
7998
7999 /* But let's not be silly about it. If the blr isn't in
8000 reach, just go to the next instruction. */
8001 if (relocation - from + (1 << 25) >= (1 << 26)
8002 || htab->sfpr->_raw_size == 0)
8003 relocation = from + 4;
8004 }
8005 break;
8006 }
8007
8008 /* Set `addend'. */
8009 tls_type = 0;
8010 addend = rel->r_addend;
8011 switch (r_type)
8012 {
8013 default:
8014 (*_bfd_error_handler)
8015 (_("%s: unknown relocation type %d for symbol %s"),
8016 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
8017
8018 bfd_set_error (bfd_error_bad_value);
8019 ret = FALSE;
8020 continue;
8021
8022 case R_PPC64_NONE:
8023 case R_PPC64_TLS:
8024 case R_PPC64_GNU_VTINHERIT:
8025 case R_PPC64_GNU_VTENTRY:
8026 continue;
8027
8028 /* GOT16 relocations. Like an ADDR16 using the symbol's
8029 address in the GOT as relocation value instead of the
8030 symbol's value itself. Also, create a GOT entry for the
8031 symbol and put the symbol value there. */
8032 case R_PPC64_GOT_TLSGD16:
8033 case R_PPC64_GOT_TLSGD16_LO:
8034 case R_PPC64_GOT_TLSGD16_HI:
8035 case R_PPC64_GOT_TLSGD16_HA:
8036 tls_type = TLS_TLS | TLS_GD;
8037 goto dogot;
8038
8039 case R_PPC64_GOT_TLSLD16:
8040 case R_PPC64_GOT_TLSLD16_LO:
8041 case R_PPC64_GOT_TLSLD16_HI:
8042 case R_PPC64_GOT_TLSLD16_HA:
8043 tls_type = TLS_TLS | TLS_LD;
8044 goto dogot;
8045
8046 case R_PPC64_GOT_TPREL16_DS:
8047 case R_PPC64_GOT_TPREL16_LO_DS:
8048 case R_PPC64_GOT_TPREL16_HI:
8049 case R_PPC64_GOT_TPREL16_HA:
8050 tls_type = TLS_TLS | TLS_TPREL;
8051 goto dogot;
8052
8053 case R_PPC64_GOT_DTPREL16_DS:
8054 case R_PPC64_GOT_DTPREL16_LO_DS:
8055 case R_PPC64_GOT_DTPREL16_HI:
8056 case R_PPC64_GOT_DTPREL16_HA:
8057 tls_type = TLS_TLS | TLS_DTPREL;
8058 goto dogot;
8059
8060 case R_PPC64_GOT16:
8061 case R_PPC64_GOT16_LO:
8062 case R_PPC64_GOT16_HI:
8063 case R_PPC64_GOT16_HA:
8064 case R_PPC64_GOT16_DS:
8065 case R_PPC64_GOT16_LO_DS:
8066 dogot:
8067 {
8068 /* Relocation is to the entry for this symbol in the global
8069 offset table. */
8070 asection *got;
8071 bfd_vma *offp;
8072 bfd_vma off;
8073 unsigned long indx = 0;
8074
8075 if (tls_type == (TLS_TLS | TLS_LD)
8076 && (h == NULL
8077 || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)))
8078 offp = &ppc64_tlsld_got (input_bfd)->offset;
8079 else
8080 {
8081 struct got_entry *ent;
8082
8083 if (h != NULL)
8084 {
8085 bfd_boolean dyn = htab->elf.dynamic_sections_created;
8086 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8087 || (info->shared
8088 && SYMBOL_REFERENCES_LOCAL (info, h)))
8089 /* This is actually a static link, or it is a
8090 -Bsymbolic link and the symbol is defined
8091 locally, or the symbol was forced to be local
8092 because of a version file. */
8093 ;
8094 else
8095 {
8096 indx = h->dynindx;
8097 unresolved_reloc = FALSE;
8098 }
8099 ent = h->got.glist;
8100 }
8101 else
8102 {
8103 if (local_got_ents == NULL)
8104 abort ();
8105 ent = local_got_ents[r_symndx];
8106 }
8107
8108 for (; ent != NULL; ent = ent->next)
8109 if (ent->addend == rel->r_addend
8110 && ent->owner == input_bfd
8111 && ent->tls_type == tls_type)
8112 break;
8113 if (ent == NULL)
8114 abort ();
8115 offp = &ent->got.offset;
8116 }
8117
8118 got = ppc64_elf_tdata (input_bfd)->got;
8119 if (got == NULL)
8120 abort ();
8121
8122 /* The offset must always be a multiple of 8. We use the
8123 least significant bit to record whether we have already
8124 processed this entry. */
8125 off = *offp;
8126 if ((off & 1) != 0)
8127 off &= ~1;
8128 else
8129 {
8130 /* Generate relocs for the dynamic linker, except in
8131 the case of TLSLD where we'll use one entry per
8132 module. */
8133 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
8134
8135 *offp = off | 1;
8136 if ((info->shared || indx != 0)
8137 && (h == NULL
8138 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8139 || h->root.type != bfd_link_hash_undefweak))
8140 {
8141 outrel.r_offset = (got->output_section->vma
8142 + got->output_offset
8143 + off);
8144 outrel.r_addend = rel->r_addend;
8145 if (tls_type & (TLS_LD | TLS_GD))
8146 {
8147 outrel.r_addend = 0;
8148 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
8149 if (tls_type == (TLS_TLS | TLS_GD))
8150 {
8151 loc = relgot->contents;
8152 loc += (relgot->reloc_count++
8153 * sizeof (Elf64_External_Rela));
8154 bfd_elf64_swap_reloca_out (output_bfd,
8155 &outrel, loc);
8156 outrel.r_offset += 8;
8157 outrel.r_addend = rel->r_addend;
8158 outrel.r_info
8159 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8160 }
8161 }
8162 else if (tls_type == (TLS_TLS | TLS_DTPREL))
8163 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
8164 else if (tls_type == (TLS_TLS | TLS_TPREL))
8165 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
8166 else if (indx == 0)
8167 {
8168 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
8169
8170 /* Write the .got section contents for the sake
8171 of prelink. */
8172 loc = got->contents + off;
8173 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
8174 loc);
8175 }
8176 else
8177 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
8178
8179 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
8180 {
8181 outrel.r_addend += relocation;
8182 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
8183 outrel.r_addend -= htab->elf.tls_sec->vma;
8184 }
8185 loc = relgot->contents;
8186 loc += (relgot->reloc_count++
8187 * sizeof (Elf64_External_Rela));
8188 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8189 }
8190
8191 /* Init the .got section contents here if we're not
8192 emitting a reloc. */
8193 else
8194 {
8195 relocation += rel->r_addend;
8196 if (tls_type == (TLS_TLS | TLS_LD))
8197 relocation = 1;
8198 else if (tls_type != 0)
8199 {
8200 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
8201 if (tls_type == (TLS_TLS | TLS_TPREL))
8202 relocation += DTP_OFFSET - TP_OFFSET;
8203
8204 if (tls_type == (TLS_TLS | TLS_GD))
8205 {
8206 bfd_put_64 (output_bfd, relocation,
8207 got->contents + off + 8);
8208 relocation = 1;
8209 }
8210 }
8211
8212 bfd_put_64 (output_bfd, relocation,
8213 got->contents + off);
8214 }
8215 }
8216
8217 if (off >= (bfd_vma) -2)
8218 abort ();
8219
8220 relocation = got->output_offset + off;
8221
8222 /* TOC base (r2) is TOC start plus 0x8000. */
8223 addend = -TOC_BASE_OFF;
8224 }
8225 break;
8226
8227 case R_PPC64_PLT16_HA:
8228 case R_PPC64_PLT16_HI:
8229 case R_PPC64_PLT16_LO:
8230 case R_PPC64_PLT32:
8231 case R_PPC64_PLT64:
8232 /* Relocation is to the entry for this symbol in the
8233 procedure linkage table. */
8234
8235 /* Resolve a PLT reloc against a local symbol directly,
8236 without using the procedure linkage table. */
8237 if (h == NULL)
8238 break;
8239
8240 /* It's possible that we didn't make a PLT entry for this
8241 symbol. This happens when statically linking PIC code,
8242 or when using -Bsymbolic. Go find a match if there is a
8243 PLT entry. */
8244 if (htab->plt != NULL)
8245 {
8246 struct plt_entry *ent;
8247 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8248 if (ent->addend == rel->r_addend
8249 && ent->plt.offset != (bfd_vma) -1)
8250 {
8251 relocation = (htab->plt->output_section->vma
8252 + htab->plt->output_offset
8253 + ent->plt.offset);
8254 unresolved_reloc = FALSE;
8255 }
8256 }
8257 break;
8258
8259 case R_PPC64_TOC:
8260 /* Relocation value is TOC base. */
8261 relocation = TOCstart;
8262 if (r_symndx == 0)
8263 relocation += htab->stub_group[input_section->id].toc_off;
8264 else if (unresolved_reloc)
8265 ;
8266 else if (sec != NULL && sec->id <= htab->top_id)
8267 relocation += htab->stub_group[sec->id].toc_off;
8268 else
8269 unresolved_reloc = TRUE;
8270 goto dodyn2;
8271
8272 /* TOC16 relocs. We want the offset relative to the TOC base,
8273 which is the address of the start of the TOC plus 0x8000.
8274 The TOC consists of sections .got, .toc, .tocbss, and .plt,
8275 in this order. */
8276 case R_PPC64_TOC16:
8277 case R_PPC64_TOC16_LO:
8278 case R_PPC64_TOC16_HI:
8279 case R_PPC64_TOC16_DS:
8280 case R_PPC64_TOC16_LO_DS:
8281 case R_PPC64_TOC16_HA:
8282 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
8283 break;
8284
8285 /* Relocate against the beginning of the section. */
8286 case R_PPC64_SECTOFF:
8287 case R_PPC64_SECTOFF_LO:
8288 case R_PPC64_SECTOFF_HI:
8289 case R_PPC64_SECTOFF_DS:
8290 case R_PPC64_SECTOFF_LO_DS:
8291 case R_PPC64_SECTOFF_HA:
8292 if (sec != NULL)
8293 addend -= sec->output_section->vma;
8294 break;
8295
8296 case R_PPC64_REL14:
8297 case R_PPC64_REL14_BRNTAKEN:
8298 case R_PPC64_REL14_BRTAKEN:
8299 case R_PPC64_REL24:
8300 break;
8301
8302 case R_PPC64_TPREL16:
8303 case R_PPC64_TPREL16_LO:
8304 case R_PPC64_TPREL16_HI:
8305 case R_PPC64_TPREL16_HA:
8306 case R_PPC64_TPREL16_DS:
8307 case R_PPC64_TPREL16_LO_DS:
8308 case R_PPC64_TPREL16_HIGHER:
8309 case R_PPC64_TPREL16_HIGHERA:
8310 case R_PPC64_TPREL16_HIGHEST:
8311 case R_PPC64_TPREL16_HIGHESTA:
8312 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8313 if (info->shared)
8314 /* The TPREL16 relocs shouldn't really be used in shared
8315 libs as they will result in DT_TEXTREL being set, but
8316 support them anyway. */
8317 goto dodyn;
8318 break;
8319
8320 case R_PPC64_DTPREL16:
8321 case R_PPC64_DTPREL16_LO:
8322 case R_PPC64_DTPREL16_HI:
8323 case R_PPC64_DTPREL16_HA:
8324 case R_PPC64_DTPREL16_DS:
8325 case R_PPC64_DTPREL16_LO_DS:
8326 case R_PPC64_DTPREL16_HIGHER:
8327 case R_PPC64_DTPREL16_HIGHERA:
8328 case R_PPC64_DTPREL16_HIGHEST:
8329 case R_PPC64_DTPREL16_HIGHESTA:
8330 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8331 break;
8332
8333 case R_PPC64_DTPMOD64:
8334 relocation = 1;
8335 addend = 0;
8336 goto dodyn;
8337
8338 case R_PPC64_TPREL64:
8339 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
8340 goto dodyn;
8341
8342 case R_PPC64_DTPREL64:
8343 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
8344 /* Fall thru */
8345
8346 /* Relocations that may need to be propagated if this is a
8347 dynamic object. */
8348 case R_PPC64_REL30:
8349 case R_PPC64_REL32:
8350 case R_PPC64_REL64:
8351 case R_PPC64_ADDR14:
8352 case R_PPC64_ADDR14_BRNTAKEN:
8353 case R_PPC64_ADDR14_BRTAKEN:
8354 case R_PPC64_ADDR16:
8355 case R_PPC64_ADDR16_DS:
8356 case R_PPC64_ADDR16_HA:
8357 case R_PPC64_ADDR16_HI:
8358 case R_PPC64_ADDR16_HIGHER:
8359 case R_PPC64_ADDR16_HIGHERA:
8360 case R_PPC64_ADDR16_HIGHEST:
8361 case R_PPC64_ADDR16_HIGHESTA:
8362 case R_PPC64_ADDR16_LO:
8363 case R_PPC64_ADDR16_LO_DS:
8364 case R_PPC64_ADDR24:
8365 case R_PPC64_ADDR32:
8366 case R_PPC64_ADDR64:
8367 case R_PPC64_UADDR16:
8368 case R_PPC64_UADDR32:
8369 case R_PPC64_UADDR64:
8370 /* r_symndx will be zero only for relocs against symbols
8371 from removed linkonce sections, or sections discarded by
8372 a linker script. */
8373 dodyn:
8374 if (r_symndx == 0)
8375 break;
8376 /* Fall thru. */
8377
8378 dodyn2:
8379 if ((input_section->flags & SEC_ALLOC) == 0)
8380 break;
8381
8382 if (NO_OPD_RELOCS && is_opd)
8383 break;
8384
8385 if ((info->shared
8386 && (h == NULL
8387 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8388 || h->root.type != bfd_link_hash_undefweak)
8389 && (MUST_BE_DYN_RELOC (r_type)
8390 || !SYMBOL_CALLS_LOCAL (info, h)))
8391 || (ELIMINATE_COPY_RELOCS
8392 && !info->shared
8393 && h != NULL
8394 && h->dynindx != -1
8395 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
8396 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
8397 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0))
8398 {
8399 Elf_Internal_Rela outrel;
8400 bfd_boolean skip, relocate;
8401 asection *sreloc;
8402 bfd_byte *loc;
8403 bfd_vma out_off;
8404
8405 /* When generating a dynamic object, these relocations
8406 are copied into the output file to be resolved at run
8407 time. */
8408
8409 skip = FALSE;
8410 relocate = FALSE;
8411
8412 out_off = _bfd_elf_section_offset (output_bfd, info,
8413 input_section, rel->r_offset);
8414 if (out_off == (bfd_vma) -1)
8415 skip = TRUE;
8416 else if (out_off == (bfd_vma) -2)
8417 skip = TRUE, relocate = TRUE;
8418 out_off += (input_section->output_section->vma
8419 + input_section->output_offset);
8420 outrel.r_offset = out_off;
8421 outrel.r_addend = rel->r_addend;
8422
8423 /* Optimize unaligned reloc use. */
8424 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
8425 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
8426 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
8427 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
8428 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
8429 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
8430 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
8431 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
8432 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
8433
8434 if (skip)
8435 memset (&outrel, 0, sizeof outrel);
8436 else if (!SYMBOL_REFERENCES_LOCAL (info, h)
8437 && !is_opd
8438 && r_type != R_PPC64_TOC)
8439 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
8440 else
8441 {
8442 /* This symbol is local, or marked to become local,
8443 or this is an opd section reloc which must point
8444 at a local function. */
8445 outrel.r_addend += relocation;
8446 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
8447 {
8448 if (is_opd && h != NULL)
8449 {
8450 /* Lie about opd entries. This case occurs
8451 when building shared libraries and we
8452 reference a function in another shared
8453 lib. The same thing happens for a weak
8454 definition in an application that's
8455 overridden by a strong definition in a
8456 shared lib. (I believe this is a generic
8457 bug in binutils handling of weak syms.)
8458 In these cases we won't use the opd
8459 entry in this lib. */
8460 unresolved_reloc = FALSE;
8461 }
8462 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8463
8464 /* We need to relocate .opd contents for ld.so.
8465 Prelink also wants simple and consistent rules
8466 for relocs. This make all RELATIVE relocs have
8467 *r_offset equal to r_addend. */
8468 relocate = TRUE;
8469 }
8470 else
8471 {
8472 long indx = 0;
8473
8474 if (bfd_is_abs_section (sec))
8475 ;
8476 else if (sec == NULL || sec->owner == NULL)
8477 {
8478 bfd_set_error (bfd_error_bad_value);
8479 return FALSE;
8480 }
8481 else
8482 {
8483 asection *osec;
8484
8485 osec = sec->output_section;
8486 indx = elf_section_data (osec)->dynindx;
8487
8488 /* We are turning this relocation into one
8489 against a section symbol, so subtract out
8490 the output section's address but not the
8491 offset of the input section in the output
8492 section. */
8493 outrel.r_addend -= osec->vma;
8494 }
8495
8496 outrel.r_info = ELF64_R_INFO (indx, r_type);
8497 }
8498 }
8499
8500 sreloc = elf_section_data (input_section)->sreloc;
8501 if (sreloc == NULL)
8502 abort ();
8503
8504 loc = sreloc->contents;
8505 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
8506 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
8507
8508 /* If this reloc is against an external symbol, it will
8509 be computed at runtime, so there's no need to do
8510 anything now. However, for the sake of prelink ensure
8511 that the section contents are a known value. */
8512 if (! relocate)
8513 {
8514 unresolved_reloc = FALSE;
8515 /* The value chosen here is quite arbitrary as ld.so
8516 ignores section contents except for the special
8517 case of .opd where the contents might be accessed
8518 before relocation. Choose zero, as that won't
8519 cause reloc overflow. */
8520 relocation = 0;
8521 addend = 0;
8522 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
8523 to improve backward compatibility with older
8524 versions of ld. */
8525 if (r_type == R_PPC64_ADDR64)
8526 addend = outrel.r_addend;
8527 /* Adjust pc_relative relocs to have zero in *r_offset. */
8528 else if (ppc64_elf_howto_table[r_type]->pc_relative)
8529 addend = (input_section->output_section->vma
8530 + input_section->output_offset
8531 + rel->r_offset);
8532 }
8533 }
8534 break;
8535
8536 case R_PPC64_COPY:
8537 case R_PPC64_GLOB_DAT:
8538 case R_PPC64_JMP_SLOT:
8539 case R_PPC64_RELATIVE:
8540 /* We shouldn't ever see these dynamic relocs in relocatable
8541 files. */
8542 /* Fall through. */
8543
8544 case R_PPC64_PLTGOT16:
8545 case R_PPC64_PLTGOT16_DS:
8546 case R_PPC64_PLTGOT16_HA:
8547 case R_PPC64_PLTGOT16_HI:
8548 case R_PPC64_PLTGOT16_LO:
8549 case R_PPC64_PLTGOT16_LO_DS:
8550 case R_PPC64_PLTREL32:
8551 case R_PPC64_PLTREL64:
8552 /* These ones haven't been implemented yet. */
8553
8554 (*_bfd_error_handler)
8555 (_("%s: relocation %s is not supported for symbol %s."),
8556 bfd_archive_filename (input_bfd),
8557 ppc64_elf_howto_table[r_type]->name, sym_name);
8558
8559 bfd_set_error (bfd_error_invalid_operation);
8560 ret = FALSE;
8561 continue;
8562 }
8563
8564 /* Do any further special processing. */
8565 switch (r_type)
8566 {
8567 default:
8568 break;
8569
8570 case R_PPC64_ADDR16_HA:
8571 case R_PPC64_ADDR16_HIGHERA:
8572 case R_PPC64_ADDR16_HIGHESTA:
8573 case R_PPC64_GOT16_HA:
8574 case R_PPC64_PLTGOT16_HA:
8575 case R_PPC64_PLT16_HA:
8576 case R_PPC64_TOC16_HA:
8577 case R_PPC64_SECTOFF_HA:
8578 case R_PPC64_TPREL16_HA:
8579 case R_PPC64_DTPREL16_HA:
8580 case R_PPC64_GOT_TLSGD16_HA:
8581 case R_PPC64_GOT_TLSLD16_HA:
8582 case R_PPC64_GOT_TPREL16_HA:
8583 case R_PPC64_GOT_DTPREL16_HA:
8584 case R_PPC64_TPREL16_HIGHER:
8585 case R_PPC64_TPREL16_HIGHERA:
8586 case R_PPC64_TPREL16_HIGHEST:
8587 case R_PPC64_TPREL16_HIGHESTA:
8588 case R_PPC64_DTPREL16_HIGHER:
8589 case R_PPC64_DTPREL16_HIGHERA:
8590 case R_PPC64_DTPREL16_HIGHEST:
8591 case R_PPC64_DTPREL16_HIGHESTA:
8592 /* It's just possible that this symbol is a weak symbol
8593 that's not actually defined anywhere. In that case,
8594 'sec' would be NULL, and we should leave the symbol
8595 alone (it will be set to zero elsewhere in the link). */
8596 if (sec != NULL)
8597 /* Add 0x10000 if sign bit in 0:15 is set.
8598 Bits 0:15 are not used. */
8599 addend += 0x8000;
8600 break;
8601
8602 case R_PPC64_ADDR16_DS:
8603 case R_PPC64_ADDR16_LO_DS:
8604 case R_PPC64_GOT16_DS:
8605 case R_PPC64_GOT16_LO_DS:
8606 case R_PPC64_PLT16_LO_DS:
8607 case R_PPC64_SECTOFF_DS:
8608 case R_PPC64_SECTOFF_LO_DS:
8609 case R_PPC64_TOC16_DS:
8610 case R_PPC64_TOC16_LO_DS:
8611 case R_PPC64_PLTGOT16_DS:
8612 case R_PPC64_PLTGOT16_LO_DS:
8613 case R_PPC64_GOT_TPREL16_DS:
8614 case R_PPC64_GOT_TPREL16_LO_DS:
8615 case R_PPC64_GOT_DTPREL16_DS:
8616 case R_PPC64_GOT_DTPREL16_LO_DS:
8617 case R_PPC64_TPREL16_DS:
8618 case R_PPC64_TPREL16_LO_DS:
8619 case R_PPC64_DTPREL16_DS:
8620 case R_PPC64_DTPREL16_LO_DS:
8621 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
8622 mask = 3;
8623 /* If this reloc is against an lq insn, then the value must be
8624 a multiple of 16. This is somewhat of a hack, but the
8625 "correct" way to do this by defining _DQ forms of all the
8626 _DS relocs bloats all reloc switches in this file. It
8627 doesn't seem to make much sense to use any of these relocs
8628 in data, so testing the insn should be safe. */
8629 if ((insn & (0x3f << 26)) == (56u << 26))
8630 mask = 15;
8631 if (((relocation + addend) & mask) != 0)
8632 {
8633 (*_bfd_error_handler)
8634 (_("%s: error: relocation %s not a multiple of %d"),
8635 bfd_archive_filename (input_bfd),
8636 ppc64_elf_howto_table[r_type]->name,
8637 mask + 1);
8638 bfd_set_error (bfd_error_bad_value);
8639 ret = FALSE;
8640 continue;
8641 }
8642 break;
8643
8644 case R_PPC64_REL14:
8645 case R_PPC64_REL14_BRNTAKEN:
8646 case R_PPC64_REL14_BRTAKEN:
8647 max_br_offset = 1 << 15;
8648 goto branch_check;
8649
8650 case R_PPC64_REL24:
8651 max_br_offset = 1 << 25;
8652
8653 branch_check:
8654 /* If the branch is out of reach or the TOC register needs
8655 adjusting, then redirect the call to the local stub for
8656 this function. */
8657 from = (rel->r_offset
8658 + input_section->output_offset
8659 + input_section->output_section->vma);
8660 if ((relocation + addend - from + max_br_offset >= 2 * max_br_offset
8661 || (sec != NULL
8662 && sec->output_section != NULL
8663 && sec->id <= htab->top_id
8664 && (htab->stub_group[sec->id].toc_off
8665 != htab->stub_group[input_section->id].toc_off)))
8666 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
8667 rel, htab)) != NULL)
8668 {
8669 /* Munge up the value and addend so that we call the stub
8670 rather than the procedure directly. */
8671 relocation = (stub_entry->stub_offset
8672 + stub_entry->stub_sec->output_offset
8673 + stub_entry->stub_sec->output_section->vma);
8674 addend = 0;
8675 }
8676 break;
8677 }
8678
8679 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8680 because such sections are not SEC_ALLOC and thus ld.so will
8681 not process them. */
8682 if (unresolved_reloc
8683 && !((input_section->flags & SEC_DEBUGGING) != 0
8684 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
8685 {
8686 (*_bfd_error_handler)
8687 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
8688 bfd_archive_filename (input_bfd),
8689 bfd_get_section_name (input_bfd, input_section),
8690 (long) rel->r_offset,
8691 ppc64_elf_howto_table[(int) r_type]->name,
8692 h->root.root.string);
8693 ret = FALSE;
8694 }
8695
8696 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
8697 input_bfd,
8698 input_section,
8699 contents,
8700 rel->r_offset,
8701 relocation,
8702 addend);
8703
8704 if (r != bfd_reloc_ok)
8705 {
8706 if (sym_name == NULL)
8707 sym_name = "(null)";
8708 if (r == bfd_reloc_overflow)
8709 {
8710 if (warned)
8711 continue;
8712 if (h != NULL
8713 && h->root.type == bfd_link_hash_undefweak
8714 && ppc64_elf_howto_table[r_type]->pc_relative)
8715 {
8716 /* Assume this is a call protected by other code that
8717 detects the symbol is undefined. If this is the case,
8718 we can safely ignore the overflow. If not, the
8719 program is hosed anyway, and a little warning isn't
8720 going to help. */
8721
8722 continue;
8723 }
8724
8725 if (!((*info->callbacks->reloc_overflow)
8726 (info, sym_name, ppc64_elf_howto_table[r_type]->name,
8727 rel->r_addend, input_bfd, input_section, rel->r_offset)))
8728 return FALSE;
8729 }
8730 else
8731 {
8732 (*_bfd_error_handler)
8733 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
8734 bfd_archive_filename (input_bfd),
8735 bfd_get_section_name (input_bfd, input_section),
8736 (long) rel->r_offset,
8737 ppc64_elf_howto_table[r_type]->name,
8738 sym_name,
8739 (int) r);
8740 ret = FALSE;
8741 }
8742 }
8743 }
8744
8745 return ret;
8746 }
8747
8748 /* Adjust the value of any local symbols in opd sections. */
8749
8750 static bfd_boolean
8751 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
8752 const char *name ATTRIBUTE_UNUSED,
8753 Elf_Internal_Sym *elfsym,
8754 asection *input_sec,
8755 struct elf_link_hash_entry *h)
8756 {
8757 long *adjust;
8758 bfd_vma value;
8759
8760 if (h != NULL
8761 || input_sec == NULL
8762 || ppc64_elf_section_data (input_sec) == NULL
8763 || (adjust = ppc64_elf_section_data (input_sec)->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 elfsym->st_value += adjust[value / 24];
8771 return TRUE;
8772 }
8773
8774 /* Finish up dynamic symbol handling. We set the contents of various
8775 dynamic sections here. */
8776
8777 static bfd_boolean
8778 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
8779 struct bfd_link_info *info,
8780 struct elf_link_hash_entry *h,
8781 Elf_Internal_Sym *sym)
8782 {
8783 struct ppc_link_hash_table *htab;
8784 bfd *dynobj;
8785
8786 htab = ppc_hash_table (info);
8787 dynobj = htab->elf.dynobj;
8788
8789 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
8790 {
8791 struct plt_entry *ent;
8792 Elf_Internal_Rela rela;
8793 bfd_byte *loc;
8794
8795 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
8796 if (ent->plt.offset != (bfd_vma) -1)
8797 {
8798 /* This symbol has an entry in the procedure linkage
8799 table. Set it up. */
8800
8801 if (htab->plt == NULL
8802 || htab->relplt == NULL
8803 || htab->glink == NULL)
8804 abort ();
8805
8806 /* Create a JMP_SLOT reloc to inform the dynamic linker to
8807 fill in the PLT entry. */
8808 rela.r_offset = (htab->plt->output_section->vma
8809 + htab->plt->output_offset
8810 + ent->plt.offset);
8811 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
8812 rela.r_addend = ent->addend;
8813
8814 loc = htab->relplt->contents;
8815 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
8816 * sizeof (Elf64_External_Rela));
8817 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8818 }
8819 }
8820
8821 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
8822 {
8823 Elf_Internal_Rela rela;
8824 bfd_byte *loc;
8825
8826 /* This symbol needs a copy reloc. Set it up. */
8827
8828 if (h->dynindx == -1
8829 || (h->root.type != bfd_link_hash_defined
8830 && h->root.type != bfd_link_hash_defweak)
8831 || htab->relbss == NULL)
8832 abort ();
8833
8834 rela.r_offset = (h->root.u.def.value
8835 + h->root.u.def.section->output_section->vma
8836 + h->root.u.def.section->output_offset);
8837 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
8838 rela.r_addend = 0;
8839 loc = htab->relbss->contents;
8840 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
8841 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
8842 }
8843
8844 /* Mark some specially defined symbols as absolute. */
8845 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
8846 sym->st_shndx = SHN_ABS;
8847
8848 return TRUE;
8849 }
8850
8851 /* Used to decide how to sort relocs in an optimal manner for the
8852 dynamic linker, before writing them out. */
8853
8854 static enum elf_reloc_type_class
8855 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
8856 {
8857 enum elf_ppc64_reloc_type r_type;
8858
8859 r_type = ELF64_R_TYPE (rela->r_info);
8860 switch (r_type)
8861 {
8862 case R_PPC64_RELATIVE:
8863 return reloc_class_relative;
8864 case R_PPC64_JMP_SLOT:
8865 return reloc_class_plt;
8866 case R_PPC64_COPY:
8867 return reloc_class_copy;
8868 default:
8869 return reloc_class_normal;
8870 }
8871 }
8872
8873 /* Finish up the dynamic sections. */
8874
8875 static bfd_boolean
8876 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
8877 struct bfd_link_info *info)
8878 {
8879 struct ppc_link_hash_table *htab;
8880 bfd *dynobj;
8881 asection *sdyn;
8882
8883 htab = ppc_hash_table (info);
8884 dynobj = htab->elf.dynobj;
8885 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8886
8887 if (htab->elf.dynamic_sections_created)
8888 {
8889 Elf64_External_Dyn *dyncon, *dynconend;
8890
8891 if (sdyn == NULL || htab->got == NULL)
8892 abort ();
8893
8894 dyncon = (Elf64_External_Dyn *) sdyn->contents;
8895 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
8896 for (; dyncon < dynconend; dyncon++)
8897 {
8898 Elf_Internal_Dyn dyn;
8899 asection *s;
8900
8901 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
8902
8903 switch (dyn.d_tag)
8904 {
8905 default:
8906 continue;
8907
8908 case DT_PPC64_GLINK:
8909 s = htab->glink;
8910 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8911 /* We stupidly defined DT_PPC64_GLINK to be the start
8912 of glink rather than the first entry point, which is
8913 what ld.so needs, and now have a bigger stub to
8914 support automatic multiple TOCs. */
8915 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
8916 break;
8917
8918 case DT_PPC64_OPD:
8919 s = bfd_get_section_by_name (output_bfd, ".opd");
8920 if (s == NULL)
8921 continue;
8922 dyn.d_un.d_ptr = s->vma;
8923 break;
8924
8925 case DT_PPC64_OPDSZ:
8926 s = bfd_get_section_by_name (output_bfd, ".opd");
8927 if (s == NULL)
8928 continue;
8929 dyn.d_un.d_val = s->_raw_size;
8930 break;
8931
8932 case DT_PLTGOT:
8933 s = htab->plt;
8934 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8935 break;
8936
8937 case DT_JMPREL:
8938 s = htab->relplt;
8939 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
8940 break;
8941
8942 case DT_PLTRELSZ:
8943 dyn.d_un.d_val = htab->relplt->_raw_size;
8944 break;
8945
8946 case DT_RELASZ:
8947 /* Don't count procedure linkage table relocs in the
8948 overall reloc count. */
8949 s = htab->relplt;
8950 if (s == NULL)
8951 continue;
8952 dyn.d_un.d_val -= s->_raw_size;
8953 break;
8954
8955 case DT_RELA:
8956 /* We may not be using the standard ELF linker script.
8957 If .rela.plt is the first .rela section, we adjust
8958 DT_RELA to not include it. */
8959 s = htab->relplt;
8960 if (s == NULL)
8961 continue;
8962 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
8963 continue;
8964 dyn.d_un.d_ptr += s->_raw_size;
8965 break;
8966 }
8967
8968 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
8969 }
8970 }
8971
8972 if (htab->got != NULL && htab->got->_raw_size != 0)
8973 {
8974 /* Fill in the first entry in the global offset table.
8975 We use it to hold the link-time TOCbase. */
8976 bfd_put_64 (output_bfd,
8977 elf_gp (output_bfd) + TOC_BASE_OFF,
8978 htab->got->contents);
8979
8980 /* Set .got entry size. */
8981 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
8982 }
8983
8984 if (htab->plt != NULL && htab->plt->_raw_size != 0)
8985 {
8986 /* Set .plt entry size. */
8987 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
8988 = PLT_ENTRY_SIZE;
8989 }
8990
8991 /* We need to handle writing out multiple GOT sections ourselves,
8992 since we didn't add them to DYNOBJ. */
8993 while ((dynobj = dynobj->link_next) != NULL)
8994 {
8995 asection *s;
8996 s = ppc64_elf_tdata (dynobj)->got;
8997 if (s != NULL
8998 && s->_raw_size != 0
8999 && s->output_section != bfd_abs_section_ptr
9000 && !bfd_set_section_contents (output_bfd, s->output_section,
9001 s->contents, s->output_offset,
9002 s->_raw_size))
9003 return FALSE;
9004 s = ppc64_elf_tdata (dynobj)->relgot;
9005 if (s != NULL
9006 && s->_raw_size != 0
9007 && s->output_section != bfd_abs_section_ptr
9008 && !bfd_set_section_contents (output_bfd, s->output_section,
9009 s->contents, s->output_offset,
9010 s->_raw_size))
9011 return FALSE;
9012 }
9013
9014 return TRUE;
9015 }
9016
9017 #include "elf64-target.h"
GDB Binutils - Deliverables
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