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* elf64-ppc.c (ppc64_elf_relocate_section): Don't use a plt stub
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
7
8 This file is part of BFD, the Binary File Descriptor library.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
23
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
27
28 #include "bfd.h"
29 #include "sysdep.h"
30 #include "bfdlink.h"
31 #include "libbfd.h"
32 #include "elf-bfd.h"
33 #include "elf/ppc64.h"
34 #include "elf64-ppc.h"
35
36 static bfd_reloc_status_type ppc64_elf_ha_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type ppc64_elf_branch_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
42 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
46 static bfd_reloc_status_type ppc64_elf_toc_reloc
47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
50 static bfd_reloc_status_type ppc64_elf_toc64_reloc
51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
52 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
54 static bfd_vma opd_entry_value
55 (asection *, bfd_vma, asection **, bfd_vma *);
56
57 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
58 #define TARGET_LITTLE_NAME "elf64-powerpcle"
59 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
60 #define TARGET_BIG_NAME "elf64-powerpc"
61 #define ELF_ARCH bfd_arch_powerpc
62 #define ELF_MACHINE_CODE EM_PPC64
63 #define ELF_MAXPAGESIZE 0x10000
64 #define elf_info_to_howto ppc64_elf_info_to_howto
65
66 #define elf_backend_want_got_sym 0
67 #define elf_backend_want_plt_sym 0
68 #define elf_backend_plt_alignment 3
69 #define elf_backend_plt_not_loaded 1
70 #define elf_backend_got_header_size 8
71 #define elf_backend_can_gc_sections 1
72 #define elf_backend_can_refcount 1
73 #define elf_backend_rela_normal 1
74
75 #define bfd_elf64_mkobject ppc64_elf_mkobject
76 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
77 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
78 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
79 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
80 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
81 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
82
83 #define elf_backend_object_p ppc64_elf_object_p
84 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
85 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
86 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
87 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
88 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
89 #define elf_backend_check_directives ppc64_elf_check_directives
90 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
91 #define elf_backend_check_relocs ppc64_elf_check_relocs
92 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
93 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
94 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
95 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
96 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
97 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
98 #define elf_backend_relocate_section ppc64_elf_relocate_section
99 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
100 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
101 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
102 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
103 #define elf_backend_special_sections ppc64_elf_special_sections
104
105 /* The name of the dynamic interpreter. This is put in the .interp
106 section. */
107 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
108
109 /* The size in bytes of an entry in the procedure linkage table. */
110 #define PLT_ENTRY_SIZE 24
111
112 /* The initial size of the plt reserved for the dynamic linker. */
113 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
114
115 /* TOC base pointers offset from start of TOC. */
116 #define TOC_BASE_OFF 0x8000
117
118 /* Offset of tp and dtp pointers from start of TLS block. */
119 #define TP_OFFSET 0x7000
120 #define DTP_OFFSET 0x8000
121
122 /* .plt call stub instructions. The normal stub is like this, but
123 sometimes the .plt entry crosses a 64k boundary and we need to
124 insert an addis to adjust r12. */
125 #define PLT_CALL_STUB_SIZE (7*4)
126 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
127 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
128 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
129 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
130 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
131 /* ld %r11,xxx+16@l(%r12) */
132 #define BCTR 0x4e800420 /* bctr */
133
134
135 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
136 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
137
138 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
139
140 /* glink call stub instructions. We enter with the index in R0, and the
141 address of glink entry in CTR. From that, we can calculate PLT0. */
142 #define GLINK_CALL_STUB_SIZE (16*4)
143 #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */
144 #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */
145 #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */
146 #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */
147 #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */
148 #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */
149 #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */
150 /* sub %r12,%r12,%r11 */
151 #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */
152 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
153 /* ld %r11,xxx@l(%r12) */
154 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */
155 /* ld %r2,8(%r12) */
156 /* mtctr %r11 */
157 /* ld %r11,16(%r12) */
158 /* bctr */
159
160 /* Pad with this. */
161 #define NOP 0x60000000
162
163 /* Some other nops. */
164 #define CROR_151515 0x4def7b82
165 #define CROR_313131 0x4ffffb82
166
167 /* .glink entries for the first 32k functions are two instructions. */
168 #define LI_R0_0 0x38000000 /* li %r0,0 */
169 #define B_DOT 0x48000000 /* b . */
170
171 /* After that, we need two instructions to load the index, followed by
172 a branch. */
173 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
174 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
175
176 /* Instructions used by the save and restore reg functions. */
177 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
178 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
179 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
180 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
181 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
182 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
183 #define LI_R12_0 0x39800000 /* li %r12,0 */
184 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
185 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
186 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
187 #define BLR 0x4e800020 /* blr */
188
189 /* Since .opd is an array of descriptors and each entry will end up
190 with identical R_PPC64_RELATIVE relocs, there is really no need to
191 propagate .opd relocs; The dynamic linker should be taught to
192 relocate .opd without reloc entries. */
193 #ifndef NO_OPD_RELOCS
194 #define NO_OPD_RELOCS 0
195 #endif
196 \f
197 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
198
199 /* Relocation HOWTO's. */
200 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
201
202 static reloc_howto_type ppc64_elf_howto_raw[] = {
203 /* This reloc does nothing. */
204 HOWTO (R_PPC64_NONE, /* 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_dont, /* complain_on_overflow */
211 bfd_elf_generic_reloc, /* special_function */
212 "R_PPC64_NONE", /* name */
213 FALSE, /* partial_inplace */
214 0, /* src_mask */
215 0, /* dst_mask */
216 FALSE), /* pcrel_offset */
217
218 /* A standard 32 bit relocation. */
219 HOWTO (R_PPC64_ADDR32, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 32, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_bitfield, /* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
227 "R_PPC64_ADDR32", /* name */
228 FALSE, /* partial_inplace */
229 0, /* src_mask */
230 0xffffffff, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 /* An absolute 26 bit branch; the lower two bits must be zero.
234 FIXME: we don't check that, we just clear them. */
235 HOWTO (R_PPC64_ADDR24, /* type */
236 0, /* rightshift */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
238 26, /* 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_ADDR24", /* name */
244 FALSE, /* partial_inplace */
245 0, /* src_mask */
246 0x03fffffc, /* dst_mask */
247 FALSE), /* pcrel_offset */
248
249 /* A standard 16 bit relocation. */
250 HOWTO (R_PPC64_ADDR16, /* 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_bitfield, /* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
258 "R_PPC64_ADDR16", /* name */
259 FALSE, /* partial_inplace */
260 0, /* src_mask */
261 0xffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
263
264 /* A 16 bit relocation without overflow. */
265 HOWTO (R_PPC64_ADDR16_LO, /* type */
266 0, /* 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_LO", /* 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. */
280 HOWTO (R_PPC64_ADDR16_HI, /* type */
281 16, /* rightshift */
282 1, /* size (0 = byte, 1 = short, 2 = long) */
283 16, /* bitsize */
284 FALSE, /* pc_relative */
285 0, /* bitpos */
286 complain_overflow_dont, /* complain_on_overflow */
287 bfd_elf_generic_reloc, /* special_function */
288 "R_PPC64_ADDR16_HI", /* name */
289 FALSE, /* partial_inplace */
290 0, /* src_mask */
291 0xffff, /* dst_mask */
292 FALSE), /* pcrel_offset */
293
294 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
295 bits, treated as a signed number, is negative. */
296 HOWTO (R_PPC64_ADDR16_HA, /* type */
297 16, /* rightshift */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
299 16, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_dont, /* complain_on_overflow */
303 ppc64_elf_ha_reloc, /* special_function */
304 "R_PPC64_ADDR16_HA", /* name */
305 FALSE, /* partial_inplace */
306 0, /* src_mask */
307 0xffff, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 /* An absolute 16 bit branch; the lower two bits must be zero.
311 FIXME: we don't check that, we just clear them. */
312 HOWTO (R_PPC64_ADDR14, /* type */
313 0, /* rightshift */
314 2, /* size (0 = byte, 1 = short, 2 = long) */
315 16, /* bitsize */
316 FALSE, /* pc_relative */
317 0, /* bitpos */
318 complain_overflow_bitfield, /* complain_on_overflow */
319 ppc64_elf_branch_reloc, /* special_function */
320 "R_PPC64_ADDR14", /* name */
321 FALSE, /* partial_inplace */
322 0, /* src_mask */
323 0x0000fffc, /* dst_mask */
324 FALSE), /* pcrel_offset */
325
326 /* An absolute 16 bit branch, for which bit 10 should be set to
327 indicate that the branch is expected to be taken. The lower two
328 bits must be zero. */
329 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
330 0, /* rightshift */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
332 16, /* bitsize */
333 FALSE, /* pc_relative */
334 0, /* bitpos */
335 complain_overflow_bitfield, /* complain_on_overflow */
336 ppc64_elf_brtaken_reloc, /* special_function */
337 "R_PPC64_ADDR14_BRTAKEN",/* name */
338 FALSE, /* partial_inplace */
339 0, /* src_mask */
340 0x0000fffc, /* dst_mask */
341 FALSE), /* pcrel_offset */
342
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is not expected to be taken. The lower
345 two bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
347 0, /* rightshift */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
349 16, /* bitsize */
350 FALSE, /* pc_relative */
351 0, /* bitpos */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc, /* special_function */
354 "R_PPC64_ADDR14_BRNTAKEN",/* name */
355 FALSE, /* partial_inplace */
356 0, /* src_mask */
357 0x0000fffc, /* dst_mask */
358 FALSE), /* pcrel_offset */
359
360 /* A relative 26 bit branch; the lower two bits must be zero. */
361 HOWTO (R_PPC64_REL24, /* type */
362 0, /* rightshift */
363 2, /* size (0 = byte, 1 = short, 2 = long) */
364 26, /* bitsize */
365 TRUE, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 ppc64_elf_branch_reloc, /* special_function */
369 "R_PPC64_REL24", /* name */
370 FALSE, /* partial_inplace */
371 0, /* src_mask */
372 0x03fffffc, /* dst_mask */
373 TRUE), /* pcrel_offset */
374
375 /* A relative 16 bit branch; the lower two bits must be zero. */
376 HOWTO (R_PPC64_REL14, /* type */
377 0, /* rightshift */
378 2, /* size (0 = byte, 1 = short, 2 = long) */
379 16, /* bitsize */
380 TRUE, /* pc_relative */
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 ppc64_elf_branch_reloc, /* special_function */
384 "R_PPC64_REL14", /* name */
385 FALSE, /* partial_inplace */
386 0, /* src_mask */
387 0x0000fffc, /* dst_mask */
388 TRUE), /* pcrel_offset */
389
390 /* A relative 16 bit branch. Bit 10 should be set to indicate that
391 the branch is expected to be taken. The lower two bits must be
392 zero. */
393 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 16, /* bitsize */
397 TRUE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_signed, /* complain_on_overflow */
400 ppc64_elf_brtaken_reloc, /* special_function */
401 "R_PPC64_REL14_BRTAKEN", /* name */
402 FALSE, /* partial_inplace */
403 0, /* src_mask */
404 0x0000fffc, /* dst_mask */
405 TRUE), /* pcrel_offset */
406
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is not expected to be taken. The lower two bits must
409 be zero. */
410 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 TRUE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_signed, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc, /* special_function */
418 "R_PPC64_REL14_BRNTAKEN",/* name */
419 FALSE, /* partial_inplace */
420 0, /* src_mask */
421 0x0000fffc, /* dst_mask */
422 TRUE), /* pcrel_offset */
423
424 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
425 symbol. */
426 HOWTO (R_PPC64_GOT16, /* type */
427 0, /* rightshift */
428 1, /* size (0 = byte, 1 = short, 2 = long) */
429 16, /* bitsize */
430 FALSE, /* pc_relative */
431 0, /* bitpos */
432 complain_overflow_signed, /* complain_on_overflow */
433 ppc64_elf_unhandled_reloc, /* special_function */
434 "R_PPC64_GOT16", /* name */
435 FALSE, /* partial_inplace */
436 0, /* src_mask */
437 0xffff, /* dst_mask */
438 FALSE), /* pcrel_offset */
439
440 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
441 the symbol. */
442 HOWTO (R_PPC64_GOT16_LO, /* type */
443 0, /* rightshift */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 ppc64_elf_unhandled_reloc, /* special_function */
450 "R_PPC64_GOT16_LO", /* name */
451 FALSE, /* partial_inplace */
452 0, /* src_mask */
453 0xffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
457 the symbol. */
458 HOWTO (R_PPC64_GOT16_HI, /* type */
459 16, /* rightshift */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
462 FALSE, /* pc_relative */
463 0, /* bitpos */
464 complain_overflow_dont,/* complain_on_overflow */
465 ppc64_elf_unhandled_reloc, /* special_function */
466 "R_PPC64_GOT16_HI", /* name */
467 FALSE, /* partial_inplace */
468 0, /* src_mask */
469 0xffff, /* dst_mask */
470 FALSE), /* pcrel_offset */
471
472 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
473 the symbol. */
474 HOWTO (R_PPC64_GOT16_HA, /* type */
475 16, /* rightshift */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
477 16, /* bitsize */
478 FALSE, /* pc_relative */
479 0, /* bitpos */
480 complain_overflow_dont,/* complain_on_overflow */
481 ppc64_elf_unhandled_reloc, /* special_function */
482 "R_PPC64_GOT16_HA", /* name */
483 FALSE, /* partial_inplace */
484 0, /* src_mask */
485 0xffff, /* dst_mask */
486 FALSE), /* pcrel_offset */
487
488 /* This is used only by the dynamic linker. The symbol should exist
489 both in the object being run and in some shared library. The
490 dynamic linker copies the data addressed by the symbol from the
491 shared library into the object, because the object being
492 run has to have the data at some particular address. */
493 HOWTO (R_PPC64_COPY, /* type */
494 0, /* rightshift */
495 0, /* this one is variable size */
496 0, /* bitsize */
497 FALSE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_dont, /* complain_on_overflow */
500 ppc64_elf_unhandled_reloc, /* special_function */
501 "R_PPC64_COPY", /* name */
502 FALSE, /* partial_inplace */
503 0, /* src_mask */
504 0, /* dst_mask */
505 FALSE), /* pcrel_offset */
506
507 /* Like R_PPC64_ADDR64, but used when setting global offset table
508 entries. */
509 HOWTO (R_PPC64_GLOB_DAT, /* type */
510 0, /* rightshift */
511 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
512 64, /* bitsize */
513 FALSE, /* pc_relative */
514 0, /* bitpos */
515 complain_overflow_dont, /* complain_on_overflow */
516 ppc64_elf_unhandled_reloc, /* special_function */
517 "R_PPC64_GLOB_DAT", /* name */
518 FALSE, /* partial_inplace */
519 0, /* src_mask */
520 ONES (64), /* dst_mask */
521 FALSE), /* pcrel_offset */
522
523 /* Created by the link editor. Marks a procedure linkage table
524 entry for a symbol. */
525 HOWTO (R_PPC64_JMP_SLOT, /* type */
526 0, /* rightshift */
527 0, /* size (0 = byte, 1 = short, 2 = long) */
528 0, /* bitsize */
529 FALSE, /* pc_relative */
530 0, /* bitpos */
531 complain_overflow_dont, /* complain_on_overflow */
532 ppc64_elf_unhandled_reloc, /* special_function */
533 "R_PPC64_JMP_SLOT", /* name */
534 FALSE, /* partial_inplace */
535 0, /* src_mask */
536 0, /* dst_mask */
537 FALSE), /* pcrel_offset */
538
539 /* Used only by the dynamic linker. When the object is run, this
540 doubleword64 is set to the load address of the object, plus the
541 addend. */
542 HOWTO (R_PPC64_RELATIVE, /* type */
543 0, /* rightshift */
544 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
545 64, /* bitsize */
546 FALSE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC64_RELATIVE", /* name */
551 FALSE, /* partial_inplace */
552 0, /* src_mask */
553 ONES (64), /* dst_mask */
554 FALSE), /* pcrel_offset */
555
556 /* Like R_PPC64_ADDR32, but may be unaligned. */
557 HOWTO (R_PPC64_UADDR32, /* type */
558 0, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 32, /* 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_UADDR32", /* name */
566 FALSE, /* partial_inplace */
567 0, /* src_mask */
568 0xffffffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
570
571 /* Like R_PPC64_ADDR16, but may be unaligned. */
572 HOWTO (R_PPC64_UADDR16, /* type */
573 0, /* rightshift */
574 1, /* size (0 = byte, 1 = short, 2 = long) */
575 16, /* bitsize */
576 FALSE, /* pc_relative */
577 0, /* bitpos */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC64_UADDR16", /* name */
581 FALSE, /* partial_inplace */
582 0, /* src_mask */
583 0xffff, /* dst_mask */
584 FALSE), /* pcrel_offset */
585
586 /* 32-bit PC relative. */
587 HOWTO (R_PPC64_REL32, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 32, /* bitsize */
591 TRUE, /* pc_relative */
592 0, /* bitpos */
593 /* FIXME: Verify. Was complain_overflow_bitfield. */
594 complain_overflow_signed, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC64_REL32", /* name */
597 FALSE, /* partial_inplace */
598 0, /* src_mask */
599 0xffffffff, /* dst_mask */
600 TRUE), /* pcrel_offset */
601
602 /* 32-bit relocation to the symbol's procedure linkage table. */
603 HOWTO (R_PPC64_PLT32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
607 FALSE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_bitfield, /* complain_on_overflow */
610 ppc64_elf_unhandled_reloc, /* special_function */
611 "R_PPC64_PLT32", /* name */
612 FALSE, /* partial_inplace */
613 0, /* src_mask */
614 0xffffffff, /* dst_mask */
615 FALSE), /* pcrel_offset */
616
617 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
618 FIXME: R_PPC64_PLTREL32 not supported. */
619 HOWTO (R_PPC64_PLTREL32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 TRUE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_signed, /* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_PPC64_PLTREL32", /* name */
628 FALSE, /* partial_inplace */
629 0, /* src_mask */
630 0xffffffff, /* dst_mask */
631 TRUE), /* pcrel_offset */
632
633 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
634 the symbol. */
635 HOWTO (R_PPC64_PLT16_LO, /* type */
636 0, /* rightshift */
637 1, /* size (0 = byte, 1 = short, 2 = long) */
638 16, /* bitsize */
639 FALSE, /* pc_relative */
640 0, /* bitpos */
641 complain_overflow_dont, /* complain_on_overflow */
642 ppc64_elf_unhandled_reloc, /* special_function */
643 "R_PPC64_PLT16_LO", /* name */
644 FALSE, /* partial_inplace */
645 0, /* src_mask */
646 0xffff, /* dst_mask */
647 FALSE), /* pcrel_offset */
648
649 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
650 the symbol. */
651 HOWTO (R_PPC64_PLT16_HI, /* type */
652 16, /* rightshift */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
654 16, /* bitsize */
655 FALSE, /* pc_relative */
656 0, /* bitpos */
657 complain_overflow_dont, /* complain_on_overflow */
658 ppc64_elf_unhandled_reloc, /* special_function */
659 "R_PPC64_PLT16_HI", /* name */
660 FALSE, /* partial_inplace */
661 0, /* src_mask */
662 0xffff, /* dst_mask */
663 FALSE), /* pcrel_offset */
664
665 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
666 the symbol. */
667 HOWTO (R_PPC64_PLT16_HA, /* type */
668 16, /* rightshift */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_dont, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc, /* special_function */
675 "R_PPC64_PLT16_HA", /* name */
676 FALSE, /* partial_inplace */
677 0, /* src_mask */
678 0xffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* 16-bit section relative relocation. */
682 HOWTO (R_PPC64_SECTOFF, /* 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_bitfield, /* complain_on_overflow */
689 ppc64_elf_sectoff_reloc, /* special_function */
690 "R_PPC64_SECTOFF", /* name */
691 FALSE, /* partial_inplace */
692 0, /* src_mask */
693 0xffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
695
696 /* Like R_PPC64_SECTOFF, but no overflow warning. */
697 HOWTO (R_PPC64_SECTOFF_LO, /* type */
698 0, /* 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_LO", /* name */
706 FALSE, /* partial_inplace */
707 0, /* src_mask */
708 0xffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
710
711 /* 16-bit upper half section relative relocation. */
712 HOWTO (R_PPC64_SECTOFF_HI, /* 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_reloc, /* special_function */
720 "R_PPC64_SECTOFF_HI", /* name */
721 FALSE, /* partial_inplace */
722 0, /* src_mask */
723 0xffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
725
726 /* 16-bit upper half adjusted section relative relocation. */
727 HOWTO (R_PPC64_SECTOFF_HA, /* type */
728 16, /* rightshift */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
731 FALSE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
734 ppc64_elf_sectoff_ha_reloc, /* special_function */
735 "R_PPC64_SECTOFF_HA", /* name */
736 FALSE, /* partial_inplace */
737 0, /* src_mask */
738 0xffff, /* dst_mask */
739 FALSE), /* pcrel_offset */
740
741 /* Like R_PPC64_REL24 without touching the two least significant bits. */
742 HOWTO (R_PPC64_REL30, /* type */
743 2, /* rightshift */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
745 30, /* bitsize */
746 TRUE, /* pc_relative */
747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
749 bfd_elf_generic_reloc, /* special_function */
750 "R_PPC64_REL30", /* name */
751 FALSE, /* partial_inplace */
752 0, /* src_mask */
753 0xfffffffc, /* dst_mask */
754 TRUE), /* pcrel_offset */
755
756 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
757
758 /* A standard 64-bit relocation. */
759 HOWTO (R_PPC64_ADDR64, /* type */
760 0, /* rightshift */
761 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
762 64, /* 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_ADDR64", /* name */
768 FALSE, /* partial_inplace */
769 0, /* src_mask */
770 ONES (64), /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 /* The bits 32-47 of an address. */
774 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
775 32, /* rightshift */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
777 16, /* bitsize */
778 FALSE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_dont, /* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_PPC64_ADDR16_HIGHER", /* name */
783 FALSE, /* partial_inplace */
784 0, /* src_mask */
785 0xffff, /* dst_mask */
786 FALSE), /* pcrel_offset */
787
788 /* The bits 32-47 of an address, plus 1 if the contents of the low
789 16 bits, treated as a signed number, is negative. */
790 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
791 32, /* 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 ppc64_elf_ha_reloc, /* special_function */
798 "R_PPC64_ADDR16_HIGHERA", /* 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. */
805 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
806 48, /* rightshift */
807 1, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
813 "R_PPC64_ADDR16_HIGHEST", /* name */
814 FALSE, /* partial_inplace */
815 0, /* src_mask */
816 0xffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
818
819 /* The bits 48-63 of an address, plus 1 if the contents of the low
820 16 bits, treated as a signed number, is negative. */
821 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
822 48, /* rightshift */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
824 16, /* bitsize */
825 FALSE, /* pc_relative */
826 0, /* bitpos */
827 complain_overflow_dont, /* complain_on_overflow */
828 ppc64_elf_ha_reloc, /* special_function */
829 "R_PPC64_ADDR16_HIGHESTA", /* name */
830 FALSE, /* partial_inplace */
831 0, /* src_mask */
832 0xffff, /* dst_mask */
833 FALSE), /* pcrel_offset */
834
835 /* Like ADDR64, but may be unaligned. */
836 HOWTO (R_PPC64_UADDR64, /* type */
837 0, /* rightshift */
838 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
839 64, /* bitsize */
840 FALSE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_dont, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
844 "R_PPC64_UADDR64", /* name */
845 FALSE, /* partial_inplace */
846 0, /* src_mask */
847 ONES (64), /* dst_mask */
848 FALSE), /* pcrel_offset */
849
850 /* 64-bit relative relocation. */
851 HOWTO (R_PPC64_REL64, /* type */
852 0, /* rightshift */
853 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
854 64, /* bitsize */
855 TRUE, /* pc_relative */
856 0, /* bitpos */
857 complain_overflow_dont, /* complain_on_overflow */
858 bfd_elf_generic_reloc, /* special_function */
859 "R_PPC64_REL64", /* name */
860 FALSE, /* partial_inplace */
861 0, /* src_mask */
862 ONES (64), /* dst_mask */
863 TRUE), /* pcrel_offset */
864
865 /* 64-bit relocation to the symbol's procedure linkage table. */
866 HOWTO (R_PPC64_PLT64, /* type */
867 0, /* rightshift */
868 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
869 64, /* bitsize */
870 FALSE, /* pc_relative */
871 0, /* bitpos */
872 complain_overflow_dont, /* complain_on_overflow */
873 ppc64_elf_unhandled_reloc, /* special_function */
874 "R_PPC64_PLT64", /* name */
875 FALSE, /* partial_inplace */
876 0, /* src_mask */
877 ONES (64), /* dst_mask */
878 FALSE), /* pcrel_offset */
879
880 /* 64-bit PC relative relocation to the symbol's procedure linkage
881 table. */
882 /* FIXME: R_PPC64_PLTREL64 not supported. */
883 HOWTO (R_PPC64_PLTREL64, /* type */
884 0, /* rightshift */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
886 64, /* bitsize */
887 TRUE, /* pc_relative */
888 0, /* bitpos */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc, /* special_function */
891 "R_PPC64_PLTREL64", /* name */
892 FALSE, /* partial_inplace */
893 0, /* src_mask */
894 ONES (64), /* dst_mask */
895 TRUE), /* pcrel_offset */
896
897 /* 16 bit TOC-relative relocation. */
898
899 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
900 HOWTO (R_PPC64_TOC16, /* type */
901 0, /* rightshift */
902 1, /* size (0 = byte, 1 = short, 2 = long) */
903 16, /* bitsize */
904 FALSE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_signed, /* complain_on_overflow */
907 ppc64_elf_toc_reloc, /* special_function */
908 "R_PPC64_TOC16", /* name */
909 FALSE, /* partial_inplace */
910 0, /* src_mask */
911 0xffff, /* dst_mask */
912 FALSE), /* pcrel_offset */
913
914 /* 16 bit TOC-relative relocation without overflow. */
915
916 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
917 HOWTO (R_PPC64_TOC16_LO, /* type */
918 0, /* rightshift */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
921 FALSE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_dont, /* complain_on_overflow */
924 ppc64_elf_toc_reloc, /* special_function */
925 "R_PPC64_TOC16_LO", /* name */
926 FALSE, /* partial_inplace */
927 0, /* src_mask */
928 0xffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
930
931 /* 16 bit TOC-relative relocation, high 16 bits. */
932
933 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_HI, /* type */
935 16, /* rightshift */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
938 FALSE, /* pc_relative */
939 0, /* bitpos */
940 complain_overflow_dont, /* complain_on_overflow */
941 ppc64_elf_toc_reloc, /* special_function */
942 "R_PPC64_TOC16_HI", /* name */
943 FALSE, /* partial_inplace */
944 0, /* src_mask */
945 0xffff, /* dst_mask */
946 FALSE), /* pcrel_offset */
947
948 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
949 contents of the low 16 bits, treated as a signed number, is
950 negative. */
951
952 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
953 HOWTO (R_PPC64_TOC16_HA, /* type */
954 16, /* rightshift */
955 1, /* size (0 = byte, 1 = short, 2 = long) */
956 16, /* bitsize */
957 FALSE, /* pc_relative */
958 0, /* bitpos */
959 complain_overflow_dont, /* complain_on_overflow */
960 ppc64_elf_toc_ha_reloc, /* special_function */
961 "R_PPC64_TOC16_HA", /* name */
962 FALSE, /* partial_inplace */
963 0, /* src_mask */
964 0xffff, /* dst_mask */
965 FALSE), /* pcrel_offset */
966
967 /* 64-bit relocation; insert value of TOC base (.TOC.). */
968
969 /* R_PPC64_TOC 51 doubleword64 .TOC. */
970 HOWTO (R_PPC64_TOC, /* type */
971 0, /* rightshift */
972 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
973 64, /* bitsize */
974 FALSE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_bitfield, /* complain_on_overflow */
977 ppc64_elf_toc64_reloc, /* special_function */
978 "R_PPC64_TOC", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 ONES (64), /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* Like R_PPC64_GOT16, but also informs the link editor that the
985 value to relocate may (!) refer to a PLT entry which the link
986 editor (a) may replace with the symbol value. If the link editor
987 is unable to fully resolve the symbol, it may (b) create a PLT
988 entry and store the address to the new PLT entry in the GOT.
989 This permits lazy resolution of function symbols at run time.
990 The link editor may also skip all of this and just (c) emit a
991 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
992 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
993 HOWTO (R_PPC64_PLTGOT16, /* type */
994 0, /* rightshift */
995 1, /* size (0 = byte, 1 = short, 2 = long) */
996 16, /* bitsize */
997 FALSE, /* pc_relative */
998 0, /* bitpos */
999 complain_overflow_signed, /* complain_on_overflow */
1000 ppc64_elf_unhandled_reloc, /* special_function */
1001 "R_PPC64_PLTGOT16", /* name */
1002 FALSE, /* partial_inplace */
1003 0, /* src_mask */
1004 0xffff, /* dst_mask */
1005 FALSE), /* pcrel_offset */
1006
1007 /* Like R_PPC64_PLTGOT16, but without overflow. */
1008 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1010 0, /* rightshift */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1012 16, /* bitsize */
1013 FALSE, /* pc_relative */
1014 0, /* bitpos */
1015 complain_overflow_dont, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc, /* special_function */
1017 "R_PPC64_PLTGOT16_LO", /* name */
1018 FALSE, /* partial_inplace */
1019 0, /* src_mask */
1020 0xffff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1022
1023 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1024 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1026 16, /* rightshift */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1028 16, /* bitsize */
1029 FALSE, /* pc_relative */
1030 0, /* bitpos */
1031 complain_overflow_dont, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc, /* special_function */
1033 "R_PPC64_PLTGOT16_HI", /* name */
1034 FALSE, /* partial_inplace */
1035 0, /* src_mask */
1036 0xffff, /* dst_mask */
1037 FALSE), /* pcrel_offset */
1038
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1040 1 if the contents of the low 16 bits, treated as a signed number,
1041 is negative. */
1042 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1043 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1044 16, /* rightshift */
1045 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 ppc64_elf_unhandled_reloc, /* special_function */
1051 "R_PPC64_PLTGOT16_HA", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0xffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1058 HOWTO (R_PPC64_ADDR16_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_bitfield, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_PPC64_ADDR16_DS", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0xfffc, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1073 HOWTO (R_PPC64_ADDR16_LO_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_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_PPC64_ADDR16_LO_DS",/* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xfffc, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1088 HOWTO (R_PPC64_GOT16_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_signed, /* complain_on_overflow */
1095 ppc64_elf_unhandled_reloc, /* special_function */
1096 "R_PPC64_GOT16_DS", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0xfffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1103 HOWTO (R_PPC64_GOT16_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_GOT16_LO_DS", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 0xfffc, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1118 HOWTO (R_PPC64_PLT16_LO_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_dont, /* complain_on_overflow */
1125 ppc64_elf_unhandled_reloc, /* special_function */
1126 "R_PPC64_PLT16_LO_DS", /* name */
1127 FALSE, /* partial_inplace */
1128 0, /* src_mask */
1129 0xfffc, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
1132 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1133 HOWTO (R_PPC64_SECTOFF_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_bitfield, /* complain_on_overflow */
1140 ppc64_elf_sectoff_reloc, /* special_function */
1141 "R_PPC64_SECTOFF_DS", /* name */
1142 FALSE, /* partial_inplace */
1143 0, /* src_mask */
1144 0xfffc, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
1147 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1148 HOWTO (R_PPC64_SECTOFF_LO_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_dont, /* complain_on_overflow */
1155 ppc64_elf_sectoff_reloc, /* special_function */
1156 "R_PPC64_SECTOFF_LO_DS",/* name */
1157 FALSE, /* partial_inplace */
1158 0, /* src_mask */
1159 0xfffc, /* dst_mask */
1160 FALSE), /* pcrel_offset */
1161
1162 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1163 HOWTO (R_PPC64_TOC16_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_signed, /* complain_on_overflow */
1170 ppc64_elf_toc_reloc, /* special_function */
1171 "R_PPC64_TOC16_DS", /* name */
1172 FALSE, /* partial_inplace */
1173 0, /* src_mask */
1174 0xfffc, /* dst_mask */
1175 FALSE), /* pcrel_offset */
1176
1177 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1178 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1179 0, /* rightshift */
1180 1, /* size (0 = byte, 1 = short, 2 = long) */
1181 16, /* bitsize */
1182 FALSE, /* pc_relative */
1183 0, /* bitpos */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 ppc64_elf_toc_reloc, /* special_function */
1186 "R_PPC64_TOC16_LO_DS", /* name */
1187 FALSE, /* partial_inplace */
1188 0, /* src_mask */
1189 0xfffc, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1191
1192 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1193 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1194 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1195 0, /* rightshift */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1197 16, /* bitsize */
1198 FALSE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 ppc64_elf_unhandled_reloc, /* special_function */
1202 "R_PPC64_PLTGOT16_DS", /* name */
1203 FALSE, /* partial_inplace */
1204 0, /* src_mask */
1205 0xfffc, /* dst_mask */
1206 FALSE), /* pcrel_offset */
1207
1208 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1211 0, /* rightshift */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1213 16, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc, /* special_function */
1218 "R_PPC64_PLTGOT16_LO_DS",/* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0xfffc, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* Marker reloc for TLS. */
1225 HOWTO (R_PPC64_TLS,
1226 0, /* rightshift */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 32, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_PPC64_TLS", /* name */
1234 FALSE, /* partial_inplace */
1235 0, /* src_mask */
1236 0, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
1239 /* Computes the load module index of the load module that contains the
1240 definition of its TLS sym. */
1241 HOWTO (R_PPC64_DTPMOD64,
1242 0, /* rightshift */
1243 4, /* size (0 = byte, 1 = short, 2 = long) */
1244 64, /* bitsize */
1245 FALSE, /* pc_relative */
1246 0, /* bitpos */
1247 complain_overflow_dont, /* complain_on_overflow */
1248 ppc64_elf_unhandled_reloc, /* special_function */
1249 "R_PPC64_DTPMOD64", /* name */
1250 FALSE, /* partial_inplace */
1251 0, /* src_mask */
1252 ONES (64), /* dst_mask */
1253 FALSE), /* pcrel_offset */
1254
1255 /* Computes a dtv-relative displacement, the difference between the value
1256 of sym+add and the base address of the thread-local storage block that
1257 contains the definition of sym, minus 0x8000. */
1258 HOWTO (R_PPC64_DTPREL64,
1259 0, /* rightshift */
1260 4, /* size (0 = byte, 1 = short, 2 = long) */
1261 64, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_dont, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_DTPREL64", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 ONES (64), /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* A 16 bit dtprel reloc. */
1273 HOWTO (R_PPC64_DTPREL16,
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_signed, /* complain_on_overflow */
1280 ppc64_elf_unhandled_reloc, /* special_function */
1281 "R_PPC64_DTPREL16", /* name */
1282 FALSE, /* partial_inplace */
1283 0, /* src_mask */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1286
1287 /* Like DTPREL16, but no overflow. */
1288 HOWTO (R_PPC64_DTPREL16_LO,
1289 0, /* 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_LO", /* name */
1297 FALSE, /* partial_inplace */
1298 0, /* src_mask */
1299 0xffff, /* dst_mask */
1300 FALSE), /* pcrel_offset */
1301
1302 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1303 HOWTO (R_PPC64_DTPREL16_HI,
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_HI", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0xffff, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1318 HOWTO (R_PPC64_DTPREL16_HA,
1319 16, /* 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_HA", /* name */
1327 FALSE, /* partial_inplace */
1328 0, /* src_mask */
1329 0xffff, /* dst_mask */
1330 FALSE), /* pcrel_offset */
1331
1332 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1333 HOWTO (R_PPC64_DTPREL16_HIGHER,
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_HIGHER", /* name */
1342 FALSE, /* partial_inplace */
1343 0, /* src_mask */
1344 0xffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1349 32, /* 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_HIGHERA", /* name */
1357 FALSE, /* partial_inplace */
1358 0, /* src_mask */
1359 0xffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HIGHEST,
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_HIGHEST", /* name */
1372 FALSE, /* partial_inplace */
1373 0, /* src_mask */
1374 0xffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1379 48, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_dont, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1387 FALSE, /* partial_inplace */
1388 0, /* src_mask */
1389 0xffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* Like DTPREL16, but for insns with a DS field. */
1393 HOWTO (R_PPC64_DTPREL16_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_signed, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc, /* special_function */
1401 "R_PPC64_DTPREL16_DS", /* name */
1402 FALSE, /* partial_inplace */
1403 0, /* src_mask */
1404 0xfffc, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 /* Like DTPREL16_DS, but no overflow. */
1408 HOWTO (R_PPC64_DTPREL16_LO_DS,
1409 0, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 16, /* bitsize */
1412 FALSE, /* pc_relative */
1413 0, /* bitpos */
1414 complain_overflow_dont, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc, /* special_function */
1416 "R_PPC64_DTPREL16_LO_DS", /* name */
1417 FALSE, /* partial_inplace */
1418 0, /* src_mask */
1419 0xfffc, /* dst_mask */
1420 FALSE), /* pcrel_offset */
1421
1422 /* Computes a tp-relative displacement, the difference between the value of
1423 sym+add and the value of the thread pointer (r13). */
1424 HOWTO (R_PPC64_TPREL64,
1425 0, /* rightshift */
1426 4, /* size (0 = byte, 1 = short, 2 = long) */
1427 64, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
1430 complain_overflow_dont, /* complain_on_overflow */
1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_TPREL64", /* name */
1433 FALSE, /* partial_inplace */
1434 0, /* src_mask */
1435 ONES (64), /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* A 16 bit tprel reloc. */
1439 HOWTO (R_PPC64_TPREL16,
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_signed, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_TPREL16", /* name */
1448 FALSE, /* partial_inplace */
1449 0, /* src_mask */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* Like TPREL16, but no overflow. */
1454 HOWTO (R_PPC64_TPREL16_LO,
1455 0, /* 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_LO", /* name */
1463 FALSE, /* partial_inplace */
1464 0, /* src_mask */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467
1468 /* Like TPREL16_LO, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_TPREL16_HI,
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_HI", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* Like TPREL16_HI, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_TPREL16_HA,
1485 16, /* 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_HA", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like TPREL16_HI, but next higher group of 16 bits. */
1499 HOWTO (R_PPC64_TPREL16_HIGHER,
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_HIGHER", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xffff, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HIGHERA,
1515 32, /* 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_HIGHERA", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HIGHEST,
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_HIGHEST", /* name */
1538 FALSE, /* partial_inplace */
1539 0, /* src_mask */
1540 0xffff, /* dst_mask */
1541 FALSE), /* pcrel_offset */
1542
1543 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1545 48, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc, /* special_function */
1552 "R_PPC64_TPREL16_HIGHESTA", /* name */
1553 FALSE, /* partial_inplace */
1554 0, /* src_mask */
1555 0xffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* Like TPREL16, but for insns with a DS field. */
1559 HOWTO (R_PPC64_TPREL16_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_signed, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc, /* special_function */
1567 "R_PPC64_TPREL16_DS", /* name */
1568 FALSE, /* partial_inplace */
1569 0, /* src_mask */
1570 0xfffc, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572
1573 /* Like TPREL16_DS, but no overflow. */
1574 HOWTO (R_PPC64_TPREL16_LO_DS,
1575 0, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1577 16, /* bitsize */
1578 FALSE, /* pc_relative */
1579 0, /* bitpos */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc, /* special_function */
1582 "R_PPC64_TPREL16_LO_DS", /* name */
1583 FALSE, /* partial_inplace */
1584 0, /* src_mask */
1585 0xfffc, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1587
1588 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1589 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1590 to the first entry relative to the TOC base (r2). */
1591 HOWTO (R_PPC64_GOT_TLSGD16,
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_signed, /* complain_on_overflow */
1598 ppc64_elf_unhandled_reloc, /* special_function */
1599 "R_PPC64_GOT_TLSGD16", /* name */
1600 FALSE, /* partial_inplace */
1601 0, /* src_mask */
1602 0xffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1604
1605 /* Like GOT_TLSGD16, but no overflow. */
1606 HOWTO (R_PPC64_GOT_TLSGD16_LO,
1607 0, /* 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_LO", /* name */
1615 FALSE, /* partial_inplace */
1616 0, /* src_mask */
1617 0xffff, /* dst_mask */
1618 FALSE), /* pcrel_offset */
1619
1620 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1621 HOWTO (R_PPC64_GOT_TLSGD16_HI,
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_HI", /* name */
1630 FALSE, /* partial_inplace */
1631 0, /* src_mask */
1632 0xffff, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1634
1635 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1636 HOWTO (R_PPC64_GOT_TLSGD16_HA,
1637 16, /* rightshift */
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 16, /* bitsize */
1640 FALSE, /* pc_relative */
1641 0, /* bitpos */
1642 complain_overflow_dont, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc, /* special_function */
1644 "R_PPC64_GOT_TLSGD16_HA", /* name */
1645 FALSE, /* partial_inplace */
1646 0, /* src_mask */
1647 0xffff, /* dst_mask */
1648 FALSE), /* pcrel_offset */
1649
1650 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1651 with values (sym+add)@dtpmod and zero, and computes the offset to the
1652 first entry relative to the TOC base (r2). */
1653 HOWTO (R_PPC64_GOT_TLSLD16,
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_signed, /* complain_on_overflow */
1660 ppc64_elf_unhandled_reloc, /* special_function */
1661 "R_PPC64_GOT_TLSLD16", /* name */
1662 FALSE, /* partial_inplace */
1663 0, /* src_mask */
1664 0xffff, /* dst_mask */
1665 FALSE), /* pcrel_offset */
1666
1667 /* Like GOT_TLSLD16, but no overflow. */
1668 HOWTO (R_PPC64_GOT_TLSLD16_LO,
1669 0, /* 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_LO", /* name */
1677 FALSE, /* partial_inplace */
1678 0, /* src_mask */
1679 0xffff, /* dst_mask */
1680 FALSE), /* pcrel_offset */
1681
1682 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1683 HOWTO (R_PPC64_GOT_TLSLD16_HI,
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_HI", /* name */
1692 FALSE, /* partial_inplace */
1693 0, /* src_mask */
1694 0xffff, /* dst_mask */
1695 FALSE), /* pcrel_offset */
1696
1697 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1698 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1699 16, /* rightshift */
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 16, /* bitsize */
1702 FALSE, /* pc_relative */
1703 0, /* bitpos */
1704 complain_overflow_dont, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc, /* special_function */
1706 "R_PPC64_GOT_TLSLD16_HA", /* name */
1707 FALSE, /* partial_inplace */
1708 0, /* src_mask */
1709 0xffff, /* dst_mask */
1710 FALSE), /* pcrel_offset */
1711
1712 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1713 the offset to the entry relative to the TOC base (r2). */
1714 HOWTO (R_PPC64_GOT_DTPREL16_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_signed, /* complain_on_overflow */
1721 ppc64_elf_unhandled_reloc, /* special_function */
1722 "R_PPC64_GOT_DTPREL16_DS", /* name */
1723 FALSE, /* partial_inplace */
1724 0, /* src_mask */
1725 0xfffc, /* dst_mask */
1726 FALSE), /* pcrel_offset */
1727
1728 /* Like GOT_DTPREL16_DS, but no overflow. */
1729 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
1730 0, /* 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_LO_DS", /* name */
1738 FALSE, /* partial_inplace */
1739 0, /* src_mask */
1740 0xfffc, /* dst_mask */
1741 FALSE), /* pcrel_offset */
1742
1743 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1744 HOWTO (R_PPC64_GOT_DTPREL16_HI,
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_HI", /* name */
1753 FALSE, /* partial_inplace */
1754 0, /* src_mask */
1755 0xffff, /* dst_mask */
1756 FALSE), /* pcrel_offset */
1757
1758 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1759 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1760 16, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 16, /* bitsize */
1763 FALSE, /* pc_relative */
1764 0, /* bitpos */
1765 complain_overflow_dont, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_HA", /* name */
1768 FALSE, /* partial_inplace */
1769 0, /* src_mask */
1770 0xffff, /* dst_mask */
1771 FALSE), /* pcrel_offset */
1772
1773 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1774 offset to the entry relative to the TOC base (r2). */
1775 HOWTO (R_PPC64_GOT_TPREL16_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_signed, /* complain_on_overflow */
1782 ppc64_elf_unhandled_reloc, /* special_function */
1783 "R_PPC64_GOT_TPREL16_DS", /* name */
1784 FALSE, /* partial_inplace */
1785 0, /* src_mask */
1786 0xfffc, /* dst_mask */
1787 FALSE), /* pcrel_offset */
1788
1789 /* Like GOT_TPREL16_DS, but no overflow. */
1790 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
1791 0, /* 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_LO_DS", /* name */
1799 FALSE, /* partial_inplace */
1800 0, /* src_mask */
1801 0xfffc, /* dst_mask */
1802 FALSE), /* pcrel_offset */
1803
1804 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1805 HOWTO (R_PPC64_GOT_TPREL16_HI,
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_HI", /* name */
1814 FALSE, /* partial_inplace */
1815 0, /* src_mask */
1816 0xffff, /* dst_mask */
1817 FALSE), /* pcrel_offset */
1818
1819 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1820 HOWTO (R_PPC64_GOT_TPREL16_HA,
1821 16, /* rightshift */
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 16, /* bitsize */
1824 FALSE, /* pc_relative */
1825 0, /* bitpos */
1826 complain_overflow_dont, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc, /* special_function */
1828 "R_PPC64_GOT_TPREL16_HA", /* name */
1829 FALSE, /* partial_inplace */
1830 0, /* src_mask */
1831 0xffff, /* dst_mask */
1832 FALSE), /* pcrel_offset */
1833
1834 /* GNU extension to record C++ vtable hierarchy. */
1835 HOWTO (R_PPC64_GNU_VTINHERIT, /* 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_VTINHERIT", /* name */
1844 FALSE, /* partial_inplace */
1845 0, /* src_mask */
1846 0, /* dst_mask */
1847 FALSE), /* pcrel_offset */
1848
1849 /* GNU extension to record C++ vtable member usage. */
1850 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1851 0, /* rightshift */
1852 0, /* size (0 = byte, 1 = short, 2 = long) */
1853 0, /* bitsize */
1854 FALSE, /* pc_relative */
1855 0, /* bitpos */
1856 complain_overflow_dont, /* complain_on_overflow */
1857 NULL, /* special_function */
1858 "R_PPC64_GNU_VTENTRY", /* name */
1859 FALSE, /* partial_inplace */
1860 0, /* src_mask */
1861 0, /* dst_mask */
1862 FALSE), /* pcrel_offset */
1863 };
1864
1865 \f
1866 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1867 be done. */
1868
1869 static void
1870 ppc_howto_init (void)
1871 {
1872 unsigned int i, type;
1873
1874 for (i = 0;
1875 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1876 i++)
1877 {
1878 type = ppc64_elf_howto_raw[i].type;
1879 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1880 / sizeof (ppc64_elf_howto_table[0])));
1881 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1882 }
1883 }
1884
1885 static reloc_howto_type *
1886 ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1887 bfd_reloc_code_real_type code)
1888 {
1889 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
1890
1891 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1892 /* Initialize howto table if needed. */
1893 ppc_howto_init ();
1894
1895 switch (code)
1896 {
1897 default:
1898 return NULL;
1899
1900 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1901 break;
1902 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1903 break;
1904 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1905 break;
1906 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1907 break;
1908 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1909 break;
1910 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1911 break;
1912 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
1913 break;
1914 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
1915 break;
1916 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
1917 break;
1918 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
1919 break;
1920 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
1921 break;
1922 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
1923 break;
1924 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
1925 break;
1926 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
1927 break;
1928 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
1929 break;
1930 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
1931 break;
1932 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
1933 break;
1934 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
1935 break;
1936 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
1937 break;
1938 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
1939 break;
1940 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
1941 break;
1942 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
1943 break;
1944 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
1945 break;
1946 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
1947 break;
1948 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
1949 break;
1950 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
1951 break;
1952 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
1953 break;
1954 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
1955 break;
1956 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
1957 break;
1958 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
1959 break;
1960 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
1961 break;
1962 case BFD_RELOC_64: r = R_PPC64_ADDR64;
1963 break;
1964 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
1965 break;
1966 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
1967 break;
1968 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
1969 break;
1970 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
1971 break;
1972 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
1973 break;
1974 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
1975 break;
1976 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
1977 break;
1978 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
1979 break;
1980 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
1981 break;
1982 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
1983 break;
1984 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
1985 break;
1986 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
1987 break;
1988 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
1989 break;
1990 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
1991 break;
1992 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
1993 break;
1994 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
1995 break;
1996 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
1997 break;
1998 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
1999 break;
2000 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
2001 break;
2002 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
2003 break;
2004 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
2005 break;
2006 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
2007 break;
2008 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
2009 break;
2010 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
2011 break;
2012 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
2013 break;
2014 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
2015 break;
2016 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
2017 break;
2018 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
2019 break;
2020 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
2021 break;
2022 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
2023 break;
2024 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
2025 break;
2026 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
2027 break;
2028 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
2029 break;
2030 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
2031 break;
2032 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2033 break;
2034 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2035 break;
2036 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2037 break;
2038 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2039 break;
2040 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2041 break;
2042 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2043 break;
2044 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2045 break;
2046 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2047 break;
2048 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2049 break;
2050 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2051 break;
2052 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2053 break;
2054 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2065 break;
2066 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2067 break;
2068 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2069 break;
2070 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2071 break;
2072 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2073 break;
2074 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2075 break;
2076 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2077 break;
2078 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2079 break;
2080 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2081 break;
2082 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2083 break;
2084 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2085 break;
2086 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2087 break;
2088 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2089 break;
2090 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2091 break;
2092 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2093 break;
2094 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2095 break;
2096 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2097 break;
2098 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2099 break;
2100 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
2101 break;
2102 }
2103
2104 return ppc64_elf_howto_table[r];
2105 };
2106
2107 /* Set the howto pointer for a PowerPC ELF reloc. */
2108
2109 static void
2110 ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2111 Elf_Internal_Rela *dst)
2112 {
2113 unsigned int type;
2114
2115 /* Initialize howto table if needed. */
2116 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2117 ppc_howto_init ();
2118
2119 type = ELF64_R_TYPE (dst->r_info);
2120 if (type >= (sizeof (ppc64_elf_howto_table)
2121 / sizeof (ppc64_elf_howto_table[0])))
2122 {
2123 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
2124 abfd, (int) type);
2125 type = R_PPC64_NONE;
2126 }
2127 cache_ptr->howto = ppc64_elf_howto_table[type];
2128 }
2129
2130 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2131
2132 static bfd_reloc_status_type
2133 ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2134 void *data, asection *input_section,
2135 bfd *output_bfd, char **error_message)
2136 {
2137 /* If this is a relocatable link (output_bfd test tells us), just
2138 call the generic function. Any adjustment will be done at final
2139 link time. */
2140 if (output_bfd != NULL)
2141 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2142 input_section, output_bfd, error_message);
2143
2144 /* Adjust the addend for sign extension of the low 16 bits.
2145 We won't actually be using the low 16 bits, so trashing them
2146 doesn't matter. */
2147 reloc_entry->addend += 0x8000;
2148 return bfd_reloc_continue;
2149 }
2150
2151 static bfd_reloc_status_type
2152 ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2153 void *data, asection *input_section,
2154 bfd *output_bfd, char **error_message)
2155 {
2156 if (output_bfd != NULL)
2157 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2158 input_section, output_bfd, error_message);
2159
2160 if (strcmp (symbol->section->name, ".opd") == 0
2161 && (symbol->section->owner->flags & DYNAMIC) == 0)
2162 {
2163 bfd_vma dest = opd_entry_value (symbol->section,
2164 symbol->value + reloc_entry->addend,
2165 NULL, NULL);
2166 if (dest != (bfd_vma) -1)
2167 reloc_entry->addend = dest - (symbol->value
2168 + symbol->section->output_section->vma
2169 + symbol->section->output_offset);
2170 }
2171 return bfd_reloc_continue;
2172 }
2173
2174 static bfd_reloc_status_type
2175 ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2176 void *data, asection *input_section,
2177 bfd *output_bfd, char **error_message)
2178 {
2179 long insn;
2180 enum elf_ppc64_reloc_type r_type;
2181 bfd_size_type octets;
2182 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2183 bfd_boolean is_power4 = FALSE;
2184
2185 /* If this is a relocatable link (output_bfd test tells us), just
2186 call the generic function. Any adjustment will be done at final
2187 link time. */
2188 if (output_bfd != NULL)
2189 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2190 input_section, output_bfd, error_message);
2191
2192 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2193 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2194 insn &= ~(0x01 << 21);
2195 r_type = reloc_entry->howto->type;
2196 if (r_type == R_PPC64_ADDR14_BRTAKEN
2197 || r_type == R_PPC64_REL14_BRTAKEN)
2198 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2199
2200 if (is_power4)
2201 {
2202 /* Set 'a' bit. This is 0b00010 in BO field for branch
2203 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2204 for branch on CTR insns (BO == 1a00t or 1a01t). */
2205 if ((insn & (0x14 << 21)) == (0x04 << 21))
2206 insn |= 0x02 << 21;
2207 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2208 insn |= 0x08 << 21;
2209 else
2210 goto out;
2211 }
2212 else
2213 {
2214 bfd_vma target = 0;
2215 bfd_vma from;
2216
2217 if (!bfd_is_com_section (symbol->section))
2218 target = symbol->value;
2219 target += symbol->section->output_section->vma;
2220 target += symbol->section->output_offset;
2221 target += reloc_entry->addend;
2222
2223 from = (reloc_entry->address
2224 + input_section->output_offset
2225 + input_section->output_section->vma);
2226
2227 /* Invert 'y' bit if not the default. */
2228 if ((bfd_signed_vma) (target - from) < 0)
2229 insn ^= 0x01 << 21;
2230 }
2231 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2232 out:
2233 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2234 input_section, output_bfd, error_message);
2235 }
2236
2237 static bfd_reloc_status_type
2238 ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2239 void *data, asection *input_section,
2240 bfd *output_bfd, char **error_message)
2241 {
2242 /* If this is a relocatable link (output_bfd test tells us), just
2243 call the generic function. Any adjustment will be done at final
2244 link time. */
2245 if (output_bfd != NULL)
2246 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2247 input_section, output_bfd, error_message);
2248
2249 /* Subtract the symbol section base address. */
2250 reloc_entry->addend -= symbol->section->output_section->vma;
2251 return bfd_reloc_continue;
2252 }
2253
2254 static bfd_reloc_status_type
2255 ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2256 void *data, asection *input_section,
2257 bfd *output_bfd, char **error_message)
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 /* Subtract the symbol section base address. */
2267 reloc_entry->addend -= symbol->section->output_section->vma;
2268
2269 /* Adjust the addend for sign extension of the low 16 bits. */
2270 reloc_entry->addend += 0x8000;
2271 return bfd_reloc_continue;
2272 }
2273
2274 static bfd_reloc_status_type
2275 ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2276 void *data, asection *input_section,
2277 bfd *output_bfd, char **error_message)
2278 {
2279 bfd_vma TOCstart;
2280
2281 /* If this is a relocatable link (output_bfd test tells us), just
2282 call the generic function. Any adjustment will be done at final
2283 link time. */
2284 if (output_bfd != NULL)
2285 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2286 input_section, output_bfd, error_message);
2287
2288 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2289 if (TOCstart == 0)
2290 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2291
2292 /* Subtract the TOC base address. */
2293 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2294 return bfd_reloc_continue;
2295 }
2296
2297 static bfd_reloc_status_type
2298 ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2299 void *data, asection *input_section,
2300 bfd *output_bfd, char **error_message)
2301 {
2302 bfd_vma TOCstart;
2303
2304 /* If this is a relocatable link (output_bfd test tells us), just
2305 call the generic function. Any adjustment will be done at final
2306 link time. */
2307 if (output_bfd != NULL)
2308 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2309 input_section, output_bfd, error_message);
2310
2311 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2312 if (TOCstart == 0)
2313 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2314
2315 /* Subtract the TOC base address. */
2316 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2317
2318 /* Adjust the addend for sign extension of the low 16 bits. */
2319 reloc_entry->addend += 0x8000;
2320 return bfd_reloc_continue;
2321 }
2322
2323 static bfd_reloc_status_type
2324 ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2325 void *data, asection *input_section,
2326 bfd *output_bfd, char **error_message)
2327 {
2328 bfd_vma TOCstart;
2329 bfd_size_type octets;
2330
2331 /* If this is a relocatable link (output_bfd test tells us), just
2332 call the generic function. Any adjustment will be done at final
2333 link time. */
2334 if (output_bfd != NULL)
2335 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2336 input_section, output_bfd, error_message);
2337
2338 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2339 if (TOCstart == 0)
2340 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2341
2342 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2343 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2344 return bfd_reloc_ok;
2345 }
2346
2347 static bfd_reloc_status_type
2348 ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2349 void *data, asection *input_section,
2350 bfd *output_bfd, char **error_message)
2351 {
2352 /* If this is a relocatable link (output_bfd test tells us), just
2353 call the generic function. Any adjustment will be done at final
2354 link time. */
2355 if (output_bfd != NULL)
2356 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2357 input_section, output_bfd, error_message);
2358
2359 if (error_message != NULL)
2360 {
2361 static char buf[60];
2362 sprintf (buf, "generic linker can't handle %s",
2363 reloc_entry->howto->name);
2364 *error_message = buf;
2365 }
2366 return bfd_reloc_dangerous;
2367 }
2368
2369 struct ppc64_elf_obj_tdata
2370 {
2371 struct elf_obj_tdata elf;
2372
2373 /* Shortcuts to dynamic linker sections. */
2374 asection *got;
2375 asection *relgot;
2376
2377 union {
2378 /* Used during garbage collection. We attach global symbols defined
2379 on removed .opd entries to this section so that the sym is removed. */
2380 asection *deleted_section;
2381
2382 /* Used when adding symbols. */
2383 bfd_boolean has_dotsym;
2384 } u;
2385
2386 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2387 sections means we potentially need one of these for each input bfd. */
2388 union {
2389 bfd_signed_vma refcount;
2390 bfd_vma offset;
2391 } tlsld_got;
2392
2393 /* A copy of relocs before they are modified for --emit-relocs. */
2394 Elf_Internal_Rela *opd_relocs;
2395 };
2396
2397 #define ppc64_elf_tdata(bfd) \
2398 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2399
2400 #define ppc64_tlsld_got(bfd) \
2401 (&ppc64_elf_tdata (bfd)->tlsld_got)
2402
2403 /* Override the generic function because we store some extras. */
2404
2405 static bfd_boolean
2406 ppc64_elf_mkobject (bfd *abfd)
2407 {
2408 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2409 abfd->tdata.any = bfd_zalloc (abfd, amt);
2410 if (abfd->tdata.any == NULL)
2411 return FALSE;
2412 return TRUE;
2413 }
2414
2415 /* Return 1 if target is one of ours. */
2416
2417 static bfd_boolean
2418 is_ppc64_elf_target (const struct bfd_target *targ)
2419 {
2420 extern const bfd_target bfd_elf64_powerpc_vec;
2421 extern const bfd_target bfd_elf64_powerpcle_vec;
2422
2423 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2424 }
2425
2426 /* Fix bad default arch selected for a 64 bit input bfd when the
2427 default is 32 bit. */
2428
2429 static bfd_boolean
2430 ppc64_elf_object_p (bfd *abfd)
2431 {
2432 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2433 {
2434 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2435
2436 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2437 {
2438 /* Relies on arch after 32 bit default being 64 bit default. */
2439 abfd->arch_info = abfd->arch_info->next;
2440 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2441 }
2442 }
2443 return TRUE;
2444 }
2445
2446 /* Support for core dump NOTE sections. */
2447
2448 static bfd_boolean
2449 ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2450 {
2451 size_t offset, size;
2452
2453 if (note->descsz != 504)
2454 return FALSE;
2455
2456 /* pr_cursig */
2457 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2458
2459 /* pr_pid */
2460 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2461
2462 /* pr_reg */
2463 offset = 112;
2464 size = 384;
2465
2466 /* Make a ".reg/999" section. */
2467 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2468 size, note->descpos + offset);
2469 }
2470
2471 static bfd_boolean
2472 ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2473 {
2474 if (note->descsz != 136)
2475 return FALSE;
2476
2477 elf_tdata (abfd)->core_program
2478 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2479 elf_tdata (abfd)->core_command
2480 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2481
2482 return TRUE;
2483 }
2484
2485 /* Merge backend specific data from an object file to the output
2486 object file when linking. */
2487
2488 static bfd_boolean
2489 ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
2490 {
2491 /* Check if we have the same endianess. */
2492 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
2493 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
2494 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2495 {
2496 const char *msg;
2497
2498 if (bfd_big_endian (ibfd))
2499 msg = _("%B: compiled for a big endian system "
2500 "and target is little endian");
2501 else
2502 msg = _("%B: compiled for a little endian system "
2503 "and target is big endian");
2504
2505 (*_bfd_error_handler) (msg, ibfd);
2506
2507 bfd_set_error (bfd_error_wrong_format);
2508 return FALSE;
2509 }
2510
2511 return TRUE;
2512 }
2513
2514 /* Add extra PPC sections. */
2515
2516 static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
2517 {
2518 { ".plt", 4, 0, SHT_NOBITS, 0 },
2519 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2520 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2521 { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2522 { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2523 { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2524 { NULL, 0, 0, 0, 0 }
2525 };
2526
2527 struct _ppc64_elf_section_data
2528 {
2529 struct bfd_elf_section_data elf;
2530
2531 /* An array with one entry for each opd function descriptor. */
2532 union
2533 {
2534 /* Points to the function code section for local opd entries. */
2535 asection **func_sec;
2536 /* After editing .opd, adjust references to opd local syms. */
2537 long *adjust;
2538 } opd;
2539
2540 /* An array for toc sections, indexed by offset/8.
2541 Specifies the relocation symbol index used at a given toc offset. */
2542 unsigned *t_symndx;
2543 };
2544
2545 #define ppc64_elf_section_data(sec) \
2546 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2547
2548 static bfd_boolean
2549 ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
2550 {
2551 struct _ppc64_elf_section_data *sdata;
2552 bfd_size_type amt = sizeof (*sdata);
2553
2554 sdata = bfd_zalloc (abfd, amt);
2555 if (sdata == NULL)
2556 return FALSE;
2557 sec->used_by_bfd = sdata;
2558
2559 return _bfd_elf_new_section_hook (abfd, sec);
2560 }
2561
2562 static void *
2563 get_opd_info (asection * sec)
2564 {
2565 if (sec != NULL
2566 && ppc64_elf_section_data (sec) != NULL
2567 && ppc64_elf_section_data (sec)->opd.adjust != NULL)
2568 return ppc64_elf_section_data (sec)->opd.adjust;
2569 return NULL;
2570 }
2571 \f
2572 /* Parameters for the qsort hook. */
2573 static asection *synthetic_opd;
2574 static bfd_boolean synthetic_relocatable;
2575
2576 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2577
2578 static int
2579 compare_symbols (const void *ap, const void *bp)
2580 {
2581 const asymbol *a = * (const asymbol **) ap;
2582 const asymbol *b = * (const asymbol **) bp;
2583
2584 /* Section symbols first. */
2585 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
2586 return -1;
2587 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
2588 return 1;
2589
2590 /* then .opd symbols. */
2591 if (a->section == synthetic_opd && b->section != synthetic_opd)
2592 return -1;
2593 if (a->section != synthetic_opd && b->section == synthetic_opd)
2594 return 1;
2595
2596 /* then other code symbols. */
2597 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2598 == (SEC_CODE | SEC_ALLOC)
2599 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2600 != (SEC_CODE | SEC_ALLOC))
2601 return -1;
2602
2603 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2604 != (SEC_CODE | SEC_ALLOC)
2605 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2606 == (SEC_CODE | SEC_ALLOC))
2607 return 1;
2608
2609 if (synthetic_relocatable)
2610 {
2611 if (a->section->id < b->section->id)
2612 return -1;
2613
2614 if (a->section->id > b->section->id)
2615 return 1;
2616 }
2617
2618 if (a->value + a->section->vma < b->value + b->section->vma)
2619 return -1;
2620
2621 if (a->value + a->section->vma > b->value + b->section->vma)
2622 return 1;
2623
2624 return 0;
2625 }
2626
2627 /* Search SYMS for a symbol of the given VALUE. */
2628
2629 static asymbol *
2630 sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
2631 {
2632 long mid;
2633
2634 if (id == -1)
2635 {
2636 while (lo < hi)
2637 {
2638 mid = (lo + hi) >> 1;
2639 if (syms[mid]->value + syms[mid]->section->vma < value)
2640 lo = mid + 1;
2641 else if (syms[mid]->value + syms[mid]->section->vma > value)
2642 hi = mid;
2643 else
2644 return syms[mid];
2645 }
2646 }
2647 else
2648 {
2649 while (lo < hi)
2650 {
2651 mid = (lo + hi) >> 1;
2652 if (syms[mid]->section->id < id)
2653 lo = mid + 1;
2654 else if (syms[mid]->section->id > id)
2655 hi = mid;
2656 else if (syms[mid]->value < value)
2657 lo = mid + 1;
2658 else if (syms[mid]->value > value)
2659 hi = mid;
2660 else
2661 return syms[mid];
2662 }
2663 }
2664 return NULL;
2665 }
2666
2667 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2668 entry syms. */
2669
2670 static long
2671 ppc64_elf_get_synthetic_symtab (bfd *abfd,
2672 long static_count, asymbol **static_syms,
2673 long dyn_count, asymbol **dyn_syms,
2674 asymbol **ret)
2675 {
2676 asymbol *s;
2677 long i;
2678 long count;
2679 char *names;
2680 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
2681 asection *opd;
2682 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
2683 asymbol **syms;
2684
2685 *ret = NULL;
2686
2687 opd = bfd_get_section_by_name (abfd, ".opd");
2688 if (opd == NULL)
2689 return 0;
2690
2691 symcount = static_count;
2692 if (!relocatable)
2693 symcount += dyn_count;
2694 if (symcount == 0)
2695 return 0;
2696
2697 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2698 if (syms == NULL)
2699 return -1;
2700
2701 if (!relocatable && static_count != 0 && dyn_count != 0)
2702 {
2703 /* Use both symbol tables. */
2704 memcpy (syms, static_syms, static_count * sizeof (*syms));
2705 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2706 }
2707 else if (!relocatable && static_count == 0)
2708 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2709 else
2710 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2711
2712 synthetic_opd = opd;
2713 synthetic_relocatable = relocatable;
2714 qsort (syms, symcount, sizeof (*syms), compare_symbols);
2715
2716 if (!relocatable && symcount > 1)
2717 {
2718 long j;
2719 /* Trim duplicate syms, since we may have merged the normal and
2720 dynamic symbols. Actually, we only care about syms that have
2721 different values, so trim any with the same value. */
2722 for (i = 1, j = 1; i < symcount; ++i)
2723 if (syms[i - 1]->value + syms[i - 1]->section->vma
2724 != syms[i]->value + syms[i]->section->vma)
2725 syms[j++] = syms[i];
2726 symcount = j;
2727 }
2728
2729 i = 0;
2730 if (syms[i]->section == opd)
2731 ++i;
2732 codesecsym = i;
2733
2734 for (; i < symcount; ++i)
2735 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2736 != (SEC_CODE | SEC_ALLOC))
2737 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2738 break;
2739 codesecsymend = i;
2740
2741 for (; i < symcount; ++i)
2742 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2743 break;
2744 secsymend = i;
2745
2746 for (; i < symcount; ++i)
2747 if (syms[i]->section != opd)
2748 break;
2749 opdsymend = i;
2750
2751 for (; i < symcount; ++i)
2752 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2753 != (SEC_CODE | SEC_ALLOC))
2754 break;
2755 symcount = i;
2756
2757 count = 0;
2758 if (opdsymend == secsymend)
2759 goto done;
2760
2761 if (relocatable)
2762 {
2763 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2764 arelent *r;
2765 size_t size;
2766 long relcount;
2767
2768 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2769 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
2770 if (relcount == 0)
2771 goto done;
2772
2773 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2774 {
2775 count = -1;
2776 goto done;
2777 }
2778
2779 size = 0;
2780 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2781 {
2782 asymbol *sym;
2783
2784 while (r < opd->relocation + relcount
2785 && r->address < syms[i]->value + opd->vma)
2786 ++r;
2787
2788 if (r == opd->relocation + relcount)
2789 break;
2790
2791 if (r->address != syms[i]->value + opd->vma)
2792 continue;
2793
2794 if (r->howto->type != R_PPC64_ADDR64)
2795 continue;
2796
2797 sym = *r->sym_ptr_ptr;
2798 if (!sym_exists_at (syms, opdsymend, symcount,
2799 sym->section->id, sym->value + r->addend))
2800 {
2801 ++count;
2802 size += sizeof (asymbol);
2803 size += strlen (syms[i]->name) + 2;
2804 }
2805 }
2806
2807 s = *ret = bfd_malloc (size);
2808 if (s == NULL)
2809 {
2810 count = -1;
2811 goto done;
2812 }
2813
2814 names = (char *) (s + count);
2815
2816 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
2817 {
2818 asymbol *sym;
2819
2820 while (r < opd->relocation + relcount
2821 && r->address < syms[i]->value + opd->vma)
2822 ++r;
2823
2824 if (r == opd->relocation + relcount)
2825 break;
2826
2827 if (r->address != syms[i]->value + opd->vma)
2828 continue;
2829
2830 if (r->howto->type != R_PPC64_ADDR64)
2831 continue;
2832
2833 sym = *r->sym_ptr_ptr;
2834 if (!sym_exists_at (syms, opdsymend, symcount,
2835 sym->section->id, sym->value + r->addend))
2836 {
2837 size_t len;
2838
2839 *s = *syms[i];
2840 s->section = sym->section;
2841 s->value = sym->value + r->addend;
2842 s->name = names;
2843 *names++ = '.';
2844 len = strlen (syms[i]->name);
2845 memcpy (names, syms[i]->name, len + 1);
2846 names += len + 1;
2847 s++;
2848 }
2849 }
2850 }
2851 else
2852 {
2853 bfd_byte *contents;
2854 size_t size;
2855
2856 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2857 {
2858 if (contents)
2859 {
2860 free_contents_and_exit:
2861 free (contents);
2862 }
2863 count = -1;
2864 goto done;
2865 }
2866
2867 size = 0;
2868 for (i = secsymend; i < opdsymend; ++i)
2869 {
2870 bfd_vma ent;
2871
2872 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2873 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2874 {
2875 ++count;
2876 size += sizeof (asymbol);
2877 size += strlen (syms[i]->name) + 2;
2878 }
2879 }
2880
2881 s = *ret = bfd_malloc (size);
2882 if (s == NULL)
2883 goto free_contents_and_exit;
2884
2885 names = (char *) (s + count);
2886
2887 for (i = secsymend; i < opdsymend; ++i)
2888 {
2889 bfd_vma ent;
2890
2891 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2892 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2893 {
2894 long lo, hi;
2895 size_t len;
2896 asection *sec = abfd->sections;
2897
2898 *s = *syms[i];
2899 lo = codesecsym;
2900 hi = codesecsymend;
2901 while (lo < hi)
2902 {
2903 long mid = (lo + hi) >> 1;
2904 if (syms[mid]->section->vma < ent)
2905 lo = mid + 1;
2906 else if (syms[mid]->section->vma > ent)
2907 hi = mid;
2908 else
2909 {
2910 sec = syms[mid]->section;
2911 break;
2912 }
2913 }
2914
2915 if (lo >= hi && lo > codesecsym)
2916 sec = syms[lo - 1]->section;
2917
2918 for (; sec != NULL; sec = sec->next)
2919 {
2920 if (sec->vma > ent)
2921 break;
2922 if ((sec->flags & SEC_ALLOC) == 0
2923 || (sec->flags & SEC_LOAD) == 0)
2924 break;
2925 if ((sec->flags & SEC_CODE) != 0)
2926 s->section = sec;
2927 }
2928 s->value = ent - s->section->vma;
2929 s->name = names;
2930 *names++ = '.';
2931 len = strlen (syms[i]->name);
2932 memcpy (names, syms[i]->name, len + 1);
2933 names += len + 1;
2934 s++;
2935 }
2936 }
2937 free (contents);
2938 }
2939
2940 done:
2941 free (syms);
2942 return count;
2943 }
2944 \f
2945 /* The following functions are specific to the ELF linker, while
2946 functions above are used generally. Those named ppc64_elf_* are
2947 called by the main ELF linker code. They appear in this file more
2948 or less in the order in which they are called. eg.
2949 ppc64_elf_check_relocs is called early in the link process,
2950 ppc64_elf_finish_dynamic_sections is one of the last functions
2951 called.
2952
2953 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
2954 functions have both a function code symbol and a function descriptor
2955 symbol. A call to foo in a relocatable object file looks like:
2956
2957 . .text
2958 . x:
2959 . bl .foo
2960 . nop
2961
2962 The function definition in another object file might be:
2963
2964 . .section .opd
2965 . foo: .quad .foo
2966 . .quad .TOC.@tocbase
2967 . .quad 0
2968 .
2969 . .text
2970 . .foo: blr
2971
2972 When the linker resolves the call during a static link, the branch
2973 unsurprisingly just goes to .foo and the .opd information is unused.
2974 If the function definition is in a shared library, things are a little
2975 different: The call goes via a plt call stub, the opd information gets
2976 copied to the plt, and the linker patches the nop.
2977
2978 . x:
2979 . bl .foo_stub
2980 . ld 2,40(1)
2981 .
2982 .
2983 . .foo_stub:
2984 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
2985 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
2986 . std 2,40(1) # this is the general idea
2987 . ld 11,0(12)
2988 . ld 2,8(12)
2989 . mtctr 11
2990 . ld 11,16(12)
2991 . bctr
2992 .
2993 . .section .plt
2994 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
2995
2996 The "reloc ()" notation is supposed to indicate that the linker emits
2997 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
2998 copying.
2999
3000 What are the difficulties here? Well, firstly, the relocations
3001 examined by the linker in check_relocs are against the function code
3002 sym .foo, while the dynamic relocation in the plt is emitted against
3003 the function descriptor symbol, foo. Somewhere along the line, we need
3004 to carefully copy dynamic link information from one symbol to the other.
3005 Secondly, the generic part of the elf linker will make .foo a dynamic
3006 symbol as is normal for most other backends. We need foo dynamic
3007 instead, at least for an application final link. However, when
3008 creating a shared library containing foo, we need to have both symbols
3009 dynamic so that references to .foo are satisfied during the early
3010 stages of linking. Otherwise the linker might decide to pull in a
3011 definition from some other object, eg. a static library.
3012
3013 Update: As of August 2004, we support a new convention. Function
3014 calls may use the function descriptor symbol, ie. "bl foo". This
3015 behaves exactly as "bl .foo". */
3016
3017 /* The linker needs to keep track of the number of relocs that it
3018 decides to copy as dynamic relocs in check_relocs for each symbol.
3019 This is so that it can later discard them if they are found to be
3020 unnecessary. We store the information in a field extending the
3021 regular ELF linker hash table. */
3022
3023 struct ppc_dyn_relocs
3024 {
3025 struct ppc_dyn_relocs *next;
3026
3027 /* The input section of the reloc. */
3028 asection *sec;
3029
3030 /* Total number of relocs copied for the input section. */
3031 bfd_size_type count;
3032
3033 /* Number of pc-relative relocs copied for the input section. */
3034 bfd_size_type pc_count;
3035 };
3036
3037 /* Track GOT entries needed for a given symbol. We might need more
3038 than one got entry per symbol. */
3039 struct got_entry
3040 {
3041 struct got_entry *next;
3042
3043 /* The symbol addend that we'll be placing in the GOT. */
3044 bfd_vma addend;
3045
3046 /* Unlike other ELF targets, we use separate GOT entries for the same
3047 symbol referenced from different input files. This is to support
3048 automatic multiple TOC/GOT sections, where the TOC base can vary
3049 from one input file to another.
3050
3051 Point to the BFD owning this GOT entry. */
3052 bfd *owner;
3053
3054 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3055 TLS_TPREL or TLS_DTPREL for tls entries. */
3056 char tls_type;
3057
3058 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3059 union
3060 {
3061 bfd_signed_vma refcount;
3062 bfd_vma offset;
3063 } got;
3064 };
3065
3066 /* The same for PLT. */
3067 struct plt_entry
3068 {
3069 struct plt_entry *next;
3070
3071 bfd_vma addend;
3072
3073 union
3074 {
3075 bfd_signed_vma refcount;
3076 bfd_vma offset;
3077 } plt;
3078 };
3079
3080 /* Of those relocs that might be copied as dynamic relocs, this macro
3081 selects those that must be copied when linking a shared library,
3082 even when the symbol is local. */
3083
3084 #define MUST_BE_DYN_RELOC(RTYPE) \
3085 ((RTYPE) != R_PPC64_REL32 \
3086 && (RTYPE) != R_PPC64_REL64 \
3087 && (RTYPE) != R_PPC64_REL30)
3088
3089 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3090 copying dynamic variables from a shared lib into an app's dynbss
3091 section, and instead use a dynamic relocation to point into the
3092 shared lib. With code that gcc generates, it's vital that this be
3093 enabled; In the PowerPC64 ABI, the address of a function is actually
3094 the address of a function descriptor, which resides in the .opd
3095 section. gcc uses the descriptor directly rather than going via the
3096 GOT as some other ABI's do, which means that initialized function
3097 pointers must reference the descriptor. Thus, a function pointer
3098 initialized to the address of a function in a shared library will
3099 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3100 redefines the function descriptor symbol to point to the copy. This
3101 presents a problem as a plt entry for that function is also
3102 initialized from the function descriptor symbol and the copy reloc
3103 may not be initialized first. */
3104 #define ELIMINATE_COPY_RELOCS 1
3105
3106 /* Section name for stubs is the associated section name plus this
3107 string. */
3108 #define STUB_SUFFIX ".stub"
3109
3110 /* Linker stubs.
3111 ppc_stub_long_branch:
3112 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3113 destination, but a 24 bit branch in a stub section will reach.
3114 . b dest
3115
3116 ppc_stub_plt_branch:
3117 Similar to the above, but a 24 bit branch in the stub section won't
3118 reach its destination.
3119 . addis %r12,%r2,xxx@toc@ha
3120 . ld %r11,xxx@toc@l(%r12)
3121 . mtctr %r11
3122 . bctr
3123
3124 ppc_stub_plt_call:
3125 Used to call a function in a shared library. If it so happens that
3126 the plt entry referenced crosses a 64k boundary, then an extra
3127 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3128 xxx+16 as appropriate.
3129 . addis %r12,%r2,xxx@toc@ha
3130 . std %r2,40(%r1)
3131 . ld %r11,xxx+0@toc@l(%r12)
3132 . ld %r2,xxx+8@toc@l(%r12)
3133 . mtctr %r11
3134 . ld %r11,xxx+16@toc@l(%r12)
3135 . bctr
3136
3137 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3138 code to adjust the value and save r2 to support multiple toc sections.
3139 A ppc_stub_long_branch with an r2 offset looks like:
3140 . std %r2,40(%r1)
3141 . addis %r2,%r2,off@ha
3142 . addi %r2,%r2,off@l
3143 . b dest
3144
3145 A ppc_stub_plt_branch with an r2 offset looks like:
3146 . std %r2,40(%r1)
3147 . addis %r12,%r2,xxx@toc@ha
3148 . ld %r11,xxx@toc@l(%r12)
3149 . addis %r2,%r2,off@ha
3150 . addi %r2,%r2,off@l
3151 . mtctr %r11
3152 . bctr
3153 */
3154
3155 enum ppc_stub_type {
3156 ppc_stub_none,
3157 ppc_stub_long_branch,
3158 ppc_stub_long_branch_r2off,
3159 ppc_stub_plt_branch,
3160 ppc_stub_plt_branch_r2off,
3161 ppc_stub_plt_call
3162 };
3163
3164 struct ppc_stub_hash_entry {
3165
3166 /* Base hash table entry structure. */
3167 struct bfd_hash_entry root;
3168
3169 enum ppc_stub_type stub_type;
3170
3171 /* The stub section. */
3172 asection *stub_sec;
3173
3174 /* Offset within stub_sec of the beginning of this stub. */
3175 bfd_vma stub_offset;
3176
3177 /* Given the symbol's value and its section we can determine its final
3178 value when building the stubs (so the stub knows where to jump. */
3179 bfd_vma target_value;
3180 asection *target_section;
3181
3182 /* The symbol table entry, if any, that this was derived from. */
3183 struct ppc_link_hash_entry *h;
3184
3185 /* And the reloc addend that this was derived from. */
3186 bfd_vma addend;
3187
3188 /* Where this stub is being called from, or, in the case of combined
3189 stub sections, the first input section in the group. */
3190 asection *id_sec;
3191 };
3192
3193 struct ppc_branch_hash_entry {
3194
3195 /* Base hash table entry structure. */
3196 struct bfd_hash_entry root;
3197
3198 /* Offset within branch lookup table. */
3199 unsigned int offset;
3200
3201 /* Generation marker. */
3202 unsigned int iter;
3203 };
3204
3205 struct ppc_link_hash_entry
3206 {
3207 struct elf_link_hash_entry elf;
3208
3209 /* A pointer to the most recently used stub hash entry against this
3210 symbol. */
3211 struct ppc_stub_hash_entry *stub_cache;
3212
3213 /* Track dynamic relocs copied for this symbol. */
3214 struct ppc_dyn_relocs *dyn_relocs;
3215
3216 /* Link between function code and descriptor symbols. */
3217 struct ppc_link_hash_entry *oh;
3218
3219 /* Flag function code and descriptor symbols. */
3220 unsigned int is_func:1;
3221 unsigned int is_func_descriptor:1;
3222 unsigned int fake:1;
3223
3224 /* Whether global opd/toc sym has been adjusted or not.
3225 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3226 should be set for all globals defined in any opd/toc section. */
3227 unsigned int adjust_done:1;
3228
3229 /* Set if we twiddled this symbol to weak at some stage. */
3230 unsigned int was_undefined:1;
3231
3232 /* Contexts in which symbol is used in the GOT (or TOC).
3233 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3234 corresponding relocs are encountered during check_relocs.
3235 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3236 indicate the corresponding GOT entry type is not needed.
3237 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3238 a TPREL one. We use a separate flag rather than setting TPREL
3239 just for convenience in distinguishing the two cases. */
3240 #define TLS_GD 1 /* GD reloc. */
3241 #define TLS_LD 2 /* LD reloc. */
3242 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3243 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3244 #define TLS_TLS 16 /* Any TLS reloc. */
3245 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3246 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3247 char tls_mask;
3248 };
3249
3250 /* ppc64 ELF linker hash table. */
3251
3252 struct ppc_link_hash_table
3253 {
3254 struct elf_link_hash_table elf;
3255
3256 /* The stub hash table. */
3257 struct bfd_hash_table stub_hash_table;
3258
3259 /* Another hash table for plt_branch stubs. */
3260 struct bfd_hash_table branch_hash_table;
3261
3262 /* Linker stub bfd. */
3263 bfd *stub_bfd;
3264
3265 /* Linker call-backs. */
3266 asection * (*add_stub_section) (const char *, asection *);
3267 void (*layout_sections_again) (void);
3268
3269 /* Array to keep track of which stub sections have been created, and
3270 information on stub grouping. */
3271 struct map_stub {
3272 /* This is the section to which stubs in the group will be attached. */
3273 asection *link_sec;
3274 /* The stub section. */
3275 asection *stub_sec;
3276 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3277 bfd_vma toc_off;
3278 } *stub_group;
3279
3280 /* Temp used when calculating TOC pointers. */
3281 bfd_vma toc_curr;
3282
3283 /* Highest input section id. */
3284 int top_id;
3285
3286 /* Highest output section index. */
3287 int top_index;
3288
3289 /* List of input sections for each output section. */
3290 asection **input_list;
3291
3292 /* Short-cuts to get to dynamic linker sections. */
3293 asection *got;
3294 asection *plt;
3295 asection *relplt;
3296 asection *dynbss;
3297 asection *relbss;
3298 asection *glink;
3299 asection *sfpr;
3300 asection *brlt;
3301 asection *relbrlt;
3302
3303 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3304 struct ppc_link_hash_entry *tls_get_addr;
3305 struct ppc_link_hash_entry *tls_get_addr_fd;
3306
3307 /* Statistics. */
3308 unsigned long stub_count[ppc_stub_plt_call];
3309
3310 /* Number of stubs against global syms. */
3311 unsigned long stub_globals;
3312
3313 /* Set if we should emit symbols for stubs. */
3314 unsigned int emit_stub_syms:1;
3315
3316 /* Support for multiple toc sections. */
3317 unsigned int no_multi_toc:1;
3318 unsigned int multi_toc_needed:1;
3319
3320 /* Set on error. */
3321 unsigned int stub_error:1;
3322
3323 /* Flag set when small branches are detected. Used to
3324 select suitable defaults for the stub group size. */
3325 unsigned int has_14bit_branch:1;
3326
3327 /* Temp used by ppc64_elf_check_directives. */
3328 unsigned int twiddled_syms:1;
3329
3330 /* Incremented every time we size stubs. */
3331 unsigned int stub_iteration;
3332
3333 /* Small local sym to section mapping cache. */
3334 struct sym_sec_cache sym_sec;
3335 };
3336
3337 /* Rename some of the generic section flags to better document how they
3338 are used here. */
3339 #define has_toc_reloc has_gp_reloc
3340 #define makes_toc_func_call need_finalize_relax
3341 #define call_check_in_progress reloc_done
3342
3343 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3344
3345 #define ppc_hash_table(p) \
3346 ((struct ppc_link_hash_table *) ((p)->hash))
3347
3348 #define ppc_stub_hash_lookup(table, string, create, copy) \
3349 ((struct ppc_stub_hash_entry *) \
3350 bfd_hash_lookup ((table), (string), (create), (copy)))
3351
3352 #define ppc_branch_hash_lookup(table, string, create, copy) \
3353 ((struct ppc_branch_hash_entry *) \
3354 bfd_hash_lookup ((table), (string), (create), (copy)))
3355
3356 /* Create an entry in the stub hash table. */
3357
3358 static struct bfd_hash_entry *
3359 stub_hash_newfunc (struct bfd_hash_entry *entry,
3360 struct bfd_hash_table *table,
3361 const char *string)
3362 {
3363 /* Allocate the structure if it has not already been allocated by a
3364 subclass. */
3365 if (entry == NULL)
3366 {
3367 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3368 if (entry == NULL)
3369 return entry;
3370 }
3371
3372 /* Call the allocation method of the superclass. */
3373 entry = bfd_hash_newfunc (entry, table, string);
3374 if (entry != NULL)
3375 {
3376 struct ppc_stub_hash_entry *eh;
3377
3378 /* Initialize the local fields. */
3379 eh = (struct ppc_stub_hash_entry *) entry;
3380 eh->stub_type = ppc_stub_none;
3381 eh->stub_sec = NULL;
3382 eh->stub_offset = 0;
3383 eh->target_value = 0;
3384 eh->target_section = NULL;
3385 eh->h = NULL;
3386 eh->id_sec = NULL;
3387 }
3388
3389 return entry;
3390 }
3391
3392 /* Create an entry in the branch hash table. */
3393
3394 static struct bfd_hash_entry *
3395 branch_hash_newfunc (struct bfd_hash_entry *entry,
3396 struct bfd_hash_table *table,
3397 const char *string)
3398 {
3399 /* Allocate the structure if it has not already been allocated by a
3400 subclass. */
3401 if (entry == NULL)
3402 {
3403 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3404 if (entry == NULL)
3405 return entry;
3406 }
3407
3408 /* Call the allocation method of the superclass. */
3409 entry = bfd_hash_newfunc (entry, table, string);
3410 if (entry != NULL)
3411 {
3412 struct ppc_branch_hash_entry *eh;
3413
3414 /* Initialize the local fields. */
3415 eh = (struct ppc_branch_hash_entry *) entry;
3416 eh->offset = 0;
3417 eh->iter = 0;
3418 }
3419
3420 return entry;
3421 }
3422
3423 /* Create an entry in a ppc64 ELF linker hash table. */
3424
3425 static struct bfd_hash_entry *
3426 link_hash_newfunc (struct bfd_hash_entry *entry,
3427 struct bfd_hash_table *table,
3428 const char *string)
3429 {
3430 /* Allocate the structure if it has not already been allocated by a
3431 subclass. */
3432 if (entry == NULL)
3433 {
3434 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3435 if (entry == NULL)
3436 return entry;
3437 }
3438
3439 /* Call the allocation method of the superclass. */
3440 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3441 if (entry != NULL)
3442 {
3443 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3444
3445 memset (&eh->stub_cache, 0,
3446 (sizeof (struct ppc_link_hash_entry)
3447 - offsetof (struct ppc_link_hash_entry, stub_cache)));
3448 }
3449
3450 return entry;
3451 }
3452
3453 /* Create a ppc64 ELF linker hash table. */
3454
3455 static struct bfd_link_hash_table *
3456 ppc64_elf_link_hash_table_create (bfd *abfd)
3457 {
3458 struct ppc_link_hash_table *htab;
3459 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3460
3461 htab = bfd_zmalloc (amt);
3462 if (htab == NULL)
3463 return NULL;
3464
3465 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
3466 {
3467 free (htab);
3468 return NULL;
3469 }
3470
3471 /* Init the stub hash table too. */
3472 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
3473 return NULL;
3474
3475 /* And the branch hash table. */
3476 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
3477 return NULL;
3478
3479 /* Initializing two fields of the union is just cosmetic. We really
3480 only care about glist, but when compiled on a 32-bit host the
3481 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3482 debugger inspection of these fields look nicer. */
3483 htab->elf.init_got_refcount.refcount = 0;
3484 htab->elf.init_got_refcount.glist = NULL;
3485 htab->elf.init_plt_refcount.refcount = 0;
3486 htab->elf.init_plt_refcount.glist = NULL;
3487 htab->elf.init_got_offset.offset = 0;
3488 htab->elf.init_got_offset.glist = NULL;
3489 htab->elf.init_plt_offset.offset = 0;
3490 htab->elf.init_plt_offset.glist = NULL;
3491
3492 return &htab->elf.root;
3493 }
3494
3495 /* Free the derived linker hash table. */
3496
3497 static void
3498 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
3499 {
3500 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3501
3502 bfd_hash_table_free (&ret->stub_hash_table);
3503 bfd_hash_table_free (&ret->branch_hash_table);
3504 _bfd_generic_link_hash_table_free (hash);
3505 }
3506
3507 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3508
3509 void
3510 ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3511 {
3512 struct ppc_link_hash_table *htab;
3513
3514 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3515
3516 /* Always hook our dynamic sections into the first bfd, which is the
3517 linker created stub bfd. This ensures that the GOT header is at
3518 the start of the output TOC section. */
3519 htab = ppc_hash_table (info);
3520 htab->stub_bfd = abfd;
3521 htab->elf.dynobj = abfd;
3522 }
3523
3524 /* Build a name for an entry in the stub hash table. */
3525
3526 static char *
3527 ppc_stub_name (const asection *input_section,
3528 const asection *sym_sec,
3529 const struct ppc_link_hash_entry *h,
3530 const Elf_Internal_Rela *rel)
3531 {
3532 char *stub_name;
3533 bfd_size_type len;
3534
3535 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3536 offsets from a sym as a branch target? In fact, we could
3537 probably assume the addend is always zero. */
3538 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3539
3540 if (h)
3541 {
3542 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3543 stub_name = bfd_malloc (len);
3544 if (stub_name == NULL)
3545 return stub_name;
3546
3547 sprintf (stub_name, "%08x.%s+%x",
3548 input_section->id & 0xffffffff,
3549 h->elf.root.root.string,
3550 (int) rel->r_addend & 0xffffffff);
3551 }
3552 else
3553 {
3554 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3555 stub_name = bfd_malloc (len);
3556 if (stub_name == NULL)
3557 return stub_name;
3558
3559 sprintf (stub_name, "%08x.%x:%x+%x",
3560 input_section->id & 0xffffffff,
3561 sym_sec->id & 0xffffffff,
3562 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3563 (int) rel->r_addend & 0xffffffff);
3564 }
3565 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3566 stub_name[len - 2] = 0;
3567 return stub_name;
3568 }
3569
3570 /* Look up an entry in the stub hash. Stub entries are cached because
3571 creating the stub name takes a bit of time. */
3572
3573 static struct ppc_stub_hash_entry *
3574 ppc_get_stub_entry (const asection *input_section,
3575 const asection *sym_sec,
3576 struct ppc_link_hash_entry *h,
3577 const Elf_Internal_Rela *rel,
3578 struct ppc_link_hash_table *htab)
3579 {
3580 struct ppc_stub_hash_entry *stub_entry;
3581 const asection *id_sec;
3582
3583 /* If this input section is part of a group of sections sharing one
3584 stub section, then use the id of the first section in the group.
3585 Stub names need to include a section id, as there may well be
3586 more than one stub used to reach say, printf, and we need to
3587 distinguish between them. */
3588 id_sec = htab->stub_group[input_section->id].link_sec;
3589
3590 if (h != NULL && h->stub_cache != NULL
3591 && h->stub_cache->h == h
3592 && h->stub_cache->id_sec == id_sec)
3593 {
3594 stub_entry = h->stub_cache;
3595 }
3596 else
3597 {
3598 char *stub_name;
3599
3600 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3601 if (stub_name == NULL)
3602 return NULL;
3603
3604 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
3605 stub_name, FALSE, FALSE);
3606 if (h != NULL)
3607 h->stub_cache = stub_entry;
3608
3609 free (stub_name);
3610 }
3611
3612 return stub_entry;
3613 }
3614
3615 /* Add a new stub entry to the stub hash. Not all fields of the new
3616 stub entry are initialised. */
3617
3618 static struct ppc_stub_hash_entry *
3619 ppc_add_stub (const char *stub_name,
3620 asection *section,
3621 struct ppc_link_hash_table *htab)
3622 {
3623 asection *link_sec;
3624 asection *stub_sec;
3625 struct ppc_stub_hash_entry *stub_entry;
3626
3627 link_sec = htab->stub_group[section->id].link_sec;
3628 stub_sec = htab->stub_group[section->id].stub_sec;
3629 if (stub_sec == NULL)
3630 {
3631 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3632 if (stub_sec == NULL)
3633 {
3634 size_t namelen;
3635 bfd_size_type len;
3636 char *s_name;
3637
3638 namelen = strlen (link_sec->name);
3639 len = namelen + sizeof (STUB_SUFFIX);
3640 s_name = bfd_alloc (htab->stub_bfd, len);
3641 if (s_name == NULL)
3642 return NULL;
3643
3644 memcpy (s_name, link_sec->name, namelen);
3645 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3646 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3647 if (stub_sec == NULL)
3648 return NULL;
3649 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3650 }
3651 htab->stub_group[section->id].stub_sec = stub_sec;
3652 }
3653
3654 /* Enter this entry into the linker stub hash table. */
3655 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3656 TRUE, FALSE);
3657 if (stub_entry == NULL)
3658 {
3659 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3660 section->owner, stub_name);
3661 return NULL;
3662 }
3663
3664 stub_entry->stub_sec = stub_sec;
3665 stub_entry->stub_offset = 0;
3666 stub_entry->id_sec = link_sec;
3667 return stub_entry;
3668 }
3669
3670 /* Create sections for linker generated code. */
3671
3672 static bfd_boolean
3673 create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
3674 {
3675 struct ppc_link_hash_table *htab;
3676 flagword flags;
3677
3678 htab = ppc_hash_table (info);
3679
3680 /* Create .sfpr for code to save and restore fp regs. */
3681 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3682 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3683 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3684 flags);
3685 if (htab->sfpr == NULL
3686 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
3687 return FALSE;
3688
3689 /* Create .glink for lazy dynamic linking support. */
3690 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3691 flags);
3692 if (htab->glink == NULL
3693 || ! bfd_set_section_alignment (dynobj, htab->glink, 2))
3694 return FALSE;
3695
3696 /* Create branch lookup table for plt_branch stubs. */
3697 if (info->shared)
3698 {
3699 flags = (SEC_ALLOC | SEC_LOAD
3700 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3701 htab->brlt
3702 = bfd_make_section_anyway_with_flags (dynobj, ".data.rel.ro.brlt",
3703 flags);
3704 }
3705 else
3706 {
3707 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3708 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3709 htab->brlt
3710 = bfd_make_section_anyway_with_flags (dynobj, ".rodata.brlt", flags);
3711 }
3712
3713 if (htab->brlt == NULL
3714 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
3715 return FALSE;
3716
3717 if (info->shared)
3718 {
3719 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3720 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3721 htab->relbrlt
3722 = bfd_make_section_anyway_with_flags (dynobj, ".rela.data.rel.ro.brlt",
3723 flags);
3724 }
3725 else if (info->emitrelocations)
3726 {
3727 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3728 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3729 htab->relbrlt
3730 = bfd_make_section_anyway_with_flags (dynobj, ".rela.rodata.brlt",
3731 flags);
3732 }
3733 else
3734 return TRUE;
3735
3736 if (!htab->relbrlt
3737 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3738 return FALSE;
3739
3740 return TRUE;
3741 }
3742
3743 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3744 not already done. */
3745
3746 static bfd_boolean
3747 create_got_section (bfd *abfd, struct bfd_link_info *info)
3748 {
3749 asection *got, *relgot;
3750 flagword flags;
3751 struct ppc_link_hash_table *htab = ppc_hash_table (info);
3752
3753 if (!htab->got)
3754 {
3755 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3756 return FALSE;
3757
3758 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3759 if (!htab->got)
3760 abort ();
3761 }
3762
3763 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3764 | SEC_LINKER_CREATED);
3765
3766 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
3767 if (!got
3768 || !bfd_set_section_alignment (abfd, got, 3))
3769 return FALSE;
3770
3771 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3772 flags | SEC_READONLY);
3773 if (!relgot
3774 || ! bfd_set_section_alignment (abfd, relgot, 3))
3775 return FALSE;
3776
3777 ppc64_elf_tdata (abfd)->got = got;
3778 ppc64_elf_tdata (abfd)->relgot = relgot;
3779 return TRUE;
3780 }
3781
3782 /* Create the dynamic sections, and set up shortcuts. */
3783
3784 static bfd_boolean
3785 ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
3786 {
3787 struct ppc_link_hash_table *htab;
3788
3789 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
3790 return FALSE;
3791
3792 htab = ppc_hash_table (info);
3793 if (!htab->got)
3794 htab->got = bfd_get_section_by_name (dynobj, ".got");
3795 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3796 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3797 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
3798 if (!info->shared)
3799 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
3800
3801 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
3802 || (!info->shared && !htab->relbss))
3803 abort ();
3804
3805 return TRUE;
3806 }
3807
3808 /* Merge PLT info on FROM with that on TO. */
3809
3810 static void
3811 move_plt_plist (struct ppc_link_hash_entry *from,
3812 struct ppc_link_hash_entry *to)
3813 {
3814 if (from->elf.plt.plist != NULL)
3815 {
3816 if (to->elf.plt.plist != NULL)
3817 {
3818 struct plt_entry **entp;
3819 struct plt_entry *ent;
3820
3821 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3822 {
3823 struct plt_entry *dent;
3824
3825 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3826 if (dent->addend == ent->addend)
3827 {
3828 dent->plt.refcount += ent->plt.refcount;
3829 *entp = ent->next;
3830 break;
3831 }
3832 if (dent == NULL)
3833 entp = &ent->next;
3834 }
3835 *entp = to->elf.plt.plist;
3836 }
3837
3838 to->elf.plt.plist = from->elf.plt.plist;
3839 from->elf.plt.plist = NULL;
3840 }
3841 }
3842
3843 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3844
3845 static void
3846 ppc64_elf_copy_indirect_symbol
3847 (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
3848 struct elf_link_hash_entry *dir,
3849 struct elf_link_hash_entry *ind)
3850 {
3851 struct ppc_link_hash_entry *edir, *eind;
3852
3853 edir = (struct ppc_link_hash_entry *) dir;
3854 eind = (struct ppc_link_hash_entry *) ind;
3855
3856 /* Copy over any dynamic relocs we may have on the indirect sym. */
3857 if (eind->dyn_relocs != NULL)
3858 {
3859 if (edir->dyn_relocs != NULL)
3860 {
3861 struct ppc_dyn_relocs **pp;
3862 struct ppc_dyn_relocs *p;
3863
3864 if (eind->elf.root.type == bfd_link_hash_indirect)
3865 abort ();
3866
3867 /* Add reloc counts against the weak sym to the strong sym
3868 list. Merge any entries against the same section. */
3869 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3870 {
3871 struct ppc_dyn_relocs *q;
3872
3873 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3874 if (q->sec == p->sec)
3875 {
3876 q->pc_count += p->pc_count;
3877 q->count += p->count;
3878 *pp = p->next;
3879 break;
3880 }
3881 if (q == NULL)
3882 pp = &p->next;
3883 }
3884 *pp = edir->dyn_relocs;
3885 }
3886
3887 edir->dyn_relocs = eind->dyn_relocs;
3888 eind->dyn_relocs = NULL;
3889 }
3890
3891 edir->is_func |= eind->is_func;
3892 edir->is_func_descriptor |= eind->is_func_descriptor;
3893 edir->tls_mask |= eind->tls_mask;
3894
3895 /* If called to transfer flags for a weakdef during processing
3896 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
3897 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
3898 if (!(ELIMINATE_COPY_RELOCS
3899 && eind->elf.root.type != bfd_link_hash_indirect
3900 && edir->elf.dynamic_adjusted))
3901 edir->elf.non_got_ref |= eind->elf.non_got_ref;
3902
3903 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
3904 edir->elf.ref_regular |= eind->elf.ref_regular;
3905 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
3906 edir->elf.needs_plt |= eind->elf.needs_plt;
3907
3908 /* If we were called to copy over info for a weak sym, that's all. */
3909 if (eind->elf.root.type != bfd_link_hash_indirect)
3910 return;
3911
3912 /* Copy over got entries that we may have already seen to the
3913 symbol which just became indirect. */
3914 if (eind->elf.got.glist != NULL)
3915 {
3916 if (edir->elf.got.glist != NULL)
3917 {
3918 struct got_entry **entp;
3919 struct got_entry *ent;
3920
3921 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
3922 {
3923 struct got_entry *dent;
3924
3925 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
3926 if (dent->addend == ent->addend
3927 && dent->owner == ent->owner
3928 && dent->tls_type == ent->tls_type)
3929 {
3930 dent->got.refcount += ent->got.refcount;
3931 *entp = ent->next;
3932 break;
3933 }
3934 if (dent == NULL)
3935 entp = &ent->next;
3936 }
3937 *entp = edir->elf.got.glist;
3938 }
3939
3940 edir->elf.got.glist = eind->elf.got.glist;
3941 eind->elf.got.glist = NULL;
3942 }
3943
3944 /* And plt entries. */
3945 move_plt_plist (eind, edir);
3946
3947 if (edir->elf.dynindx == -1)
3948 {
3949 edir->elf.dynindx = eind->elf.dynindx;
3950 edir->elf.dynstr_index = eind->elf.dynstr_index;
3951 eind->elf.dynindx = -1;
3952 eind->elf.dynstr_index = 0;
3953 }
3954 else
3955 BFD_ASSERT (eind->elf.dynindx == -1);
3956 }
3957
3958 /* Find the function descriptor hash entry from the given function code
3959 hash entry FH. Link the entries via their OH fields. */
3960
3961 static struct ppc_link_hash_entry *
3962 get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
3963 {
3964 struct ppc_link_hash_entry *fdh = fh->oh;
3965
3966 if (fdh == NULL)
3967 {
3968 const char *fd_name = fh->elf.root.root.string + 1;
3969
3970 fdh = (struct ppc_link_hash_entry *)
3971 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
3972 if (fdh != NULL)
3973 {
3974 fdh->is_func_descriptor = 1;
3975 fdh->oh = fh;
3976 fh->is_func = 1;
3977 fh->oh = fdh;
3978 }
3979 }
3980
3981 return fdh;
3982 }
3983
3984 /* Make a fake function descriptor sym for the code sym FH. */
3985
3986 static struct ppc_link_hash_entry *
3987 make_fdh (struct bfd_link_info *info,
3988 struct ppc_link_hash_entry *fh)
3989 {
3990 bfd *abfd;
3991 asymbol *newsym;
3992 struct bfd_link_hash_entry *bh;
3993 struct ppc_link_hash_entry *fdh;
3994
3995 abfd = fh->elf.root.u.undef.abfd;
3996 newsym = bfd_make_empty_symbol (abfd);
3997 newsym->name = fh->elf.root.root.string + 1;
3998 newsym->section = bfd_und_section_ptr;
3999 newsym->value = 0;
4000 newsym->flags = BSF_WEAK;
4001
4002 bh = NULL;
4003 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4004 newsym->flags, newsym->section,
4005 newsym->value, NULL, FALSE, FALSE,
4006 &bh))
4007 return NULL;
4008
4009 fdh = (struct ppc_link_hash_entry *) bh;
4010 fdh->elf.non_elf = 0;
4011 fdh->fake = 1;
4012 fdh->is_func_descriptor = 1;
4013 fdh->oh = fh;
4014 fh->is_func = 1;
4015 fh->oh = fdh;
4016 return fdh;
4017 }
4018
4019 /* Hacks to support old ABI code.
4020 When making function calls, old ABI code references function entry
4021 points (dot symbols), while new ABI code references the function
4022 descriptor symbol. We need to make any combination of reference and
4023 definition work together, without breaking archive linking.
4024
4025 For a defined function "foo" and an undefined call to "bar":
4026 An old object defines "foo" and ".foo", references ".bar" (possibly
4027 "bar" too).
4028 A new object defines "foo" and references "bar".
4029
4030 A new object thus has no problem with its undefined symbols being
4031 satisfied by definitions in an old object. On the other hand, the
4032 old object won't have ".bar" satisfied by a new object. */
4033
4034 /* Fix function descriptor symbols defined in .opd sections to be
4035 function type. */
4036
4037 static bfd_boolean
4038 ppc64_elf_add_symbol_hook (bfd *ibfd,
4039 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4040 Elf_Internal_Sym *isym,
4041 const char **name,
4042 flagword *flags ATTRIBUTE_UNUSED,
4043 asection **sec,
4044 bfd_vma *value ATTRIBUTE_UNUSED)
4045 {
4046 if (*sec != NULL
4047 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
4048 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4049
4050 if ((*name)[0] == '.'
4051 && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
4052 && ELF_ST_TYPE (isym->st_info) < STT_SECTION
4053 && is_ppc64_elf_target (ibfd->xvec))
4054 ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
4055
4056 return TRUE;
4057 }
4058
4059 /* This function makes an old ABI object reference to ".bar" cause the
4060 inclusion of a new ABI object archive that defines "bar".
4061 NAME is a symbol defined in an archive. Return a symbol in the hash
4062 table that might be satisfied by the archive symbols. */
4063
4064 static struct elf_link_hash_entry *
4065 ppc64_elf_archive_symbol_lookup (bfd *abfd,
4066 struct bfd_link_info *info,
4067 const char *name)
4068 {
4069 struct elf_link_hash_entry *h;
4070 char *dot_name;
4071 size_t len;
4072
4073 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
4074 if (h != NULL
4075 /* Don't return this sym if it is a fake function descriptor
4076 created by add_symbol_adjust. */
4077 && !(h->root.type == bfd_link_hash_undefweak
4078 && ((struct ppc_link_hash_entry *) h)->fake))
4079 return h;
4080
4081 if (name[0] == '.')
4082 return h;
4083
4084 len = strlen (name);
4085 dot_name = bfd_alloc (abfd, len + 2);
4086 if (dot_name == NULL)
4087 return (struct elf_link_hash_entry *) 0 - 1;
4088 dot_name[0] = '.';
4089 memcpy (dot_name + 1, name, len + 1);
4090 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4091 bfd_release (abfd, dot_name);
4092 return h;
4093 }
4094
4095 /* This function satisfies all old ABI object references to ".bar" if a
4096 new ABI object defines "bar". Well, at least, undefined dot symbols
4097 are made weak. This stops later archive searches from including an
4098 object if we already have a function descriptor definition. It also
4099 prevents the linker complaining about undefined symbols.
4100 We also check and correct mismatched symbol visibility here. The
4101 most restrictive visibility of the function descriptor and the
4102 function entry symbol is used. */
4103
4104 struct add_symbol_adjust_data
4105 {
4106 struct bfd_link_info *info;
4107 bfd_boolean ok;
4108 };
4109
4110 static bfd_boolean
4111 add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
4112 {
4113 struct add_symbol_adjust_data *data;
4114 struct ppc_link_hash_table *htab;
4115 struct ppc_link_hash_entry *eh;
4116 struct ppc_link_hash_entry *fdh;
4117
4118 if (h->root.type == bfd_link_hash_indirect)
4119 return TRUE;
4120
4121 if (h->root.type == bfd_link_hash_warning)
4122 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4123
4124 if (h->root.root.string[0] != '.')
4125 return TRUE;
4126
4127 data = inf;
4128 htab = ppc_hash_table (data->info);
4129 eh = (struct ppc_link_hash_entry *) h;
4130 fdh = get_fdh (eh, htab);
4131 if (fdh == NULL
4132 && !data->info->relocatable
4133 && (eh->elf.root.type == bfd_link_hash_undefined
4134 || eh->elf.root.type == bfd_link_hash_undefweak)
4135 && eh->elf.ref_regular)
4136 {
4137 /* Make an undefweak function descriptor sym, which is enough to
4138 pull in an --as-needed shared lib, but won't cause link
4139 errors. Archives are handled elsewhere. */
4140 fdh = make_fdh (data->info, eh);
4141 if (fdh == NULL)
4142 data->ok = FALSE;
4143 else
4144 fdh->elf.ref_regular = 1;
4145 }
4146 else if (fdh != NULL)
4147 {
4148 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4149 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4150 if (entry_vis < descr_vis)
4151 fdh->elf.other += entry_vis - descr_vis;
4152 else if (entry_vis > descr_vis)
4153 eh->elf.other += descr_vis - entry_vis;
4154
4155 if ((fdh->elf.root.type == bfd_link_hash_defined
4156 || fdh->elf.root.type == bfd_link_hash_defweak)
4157 && eh->elf.root.type == bfd_link_hash_undefined)
4158 {
4159 eh->elf.root.type = bfd_link_hash_undefweak;
4160 eh->was_undefined = 1;
4161 htab->twiddled_syms = 1;
4162 }
4163 }
4164
4165 return TRUE;
4166 }
4167
4168 static bfd_boolean
4169 ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
4170 {
4171 struct ppc_link_hash_table *htab;
4172 struct add_symbol_adjust_data data;
4173
4174 if (!is_ppc64_elf_target (abfd->xvec))
4175 return TRUE;
4176
4177 if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
4178 return TRUE;
4179 ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
4180
4181 htab = ppc_hash_table (info);
4182 if (!is_ppc64_elf_target (htab->elf.root.creator))
4183 return TRUE;
4184
4185 data.info = info;
4186 data.ok = TRUE;
4187 elf_link_hash_traverse (&htab->elf, add_symbol_adjust, &data);
4188
4189 /* We need to fix the undefs list for any syms we have twiddled to
4190 undef_weak. */
4191 if (htab->twiddled_syms)
4192 {
4193 bfd_link_repair_undef_list (&htab->elf.root);
4194 htab->twiddled_syms = 0;
4195 }
4196 return data.ok;
4197 }
4198
4199 static bfd_boolean
4200 update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4201 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
4202 {
4203 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
4204 char *local_got_tls_masks;
4205
4206 if (local_got_ents == NULL)
4207 {
4208 bfd_size_type size = symtab_hdr->sh_info;
4209
4210 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4211 local_got_ents = bfd_zalloc (abfd, size);
4212 if (local_got_ents == NULL)
4213 return FALSE;
4214 elf_local_got_ents (abfd) = local_got_ents;
4215 }
4216
4217 if ((tls_type & TLS_EXPLICIT) == 0)
4218 {
4219 struct got_entry *ent;
4220
4221 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
4222 if (ent->addend == r_addend
4223 && ent->owner == abfd
4224 && ent->tls_type == tls_type)
4225 break;
4226 if (ent == NULL)
4227 {
4228 bfd_size_type amt = sizeof (*ent);
4229 ent = bfd_alloc (abfd, amt);
4230 if (ent == NULL)
4231 return FALSE;
4232 ent->next = local_got_ents[r_symndx];
4233 ent->addend = r_addend;
4234 ent->owner = abfd;
4235 ent->tls_type = tls_type;
4236 ent->got.refcount = 0;
4237 local_got_ents[r_symndx] = ent;
4238 }
4239 ent->got.refcount += 1;
4240 }
4241
4242 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4243 local_got_tls_masks[r_symndx] |= tls_type;
4244 return TRUE;
4245 }
4246
4247 static bfd_boolean
4248 update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
4249 {
4250 struct plt_entry *ent;
4251
4252 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4253 if (ent->addend == addend)
4254 break;
4255 if (ent == NULL)
4256 {
4257 bfd_size_type amt = sizeof (*ent);
4258 ent = bfd_alloc (abfd, amt);
4259 if (ent == NULL)
4260 return FALSE;
4261 ent->next = eh->elf.plt.plist;
4262 ent->addend = addend;
4263 ent->plt.refcount = 0;
4264 eh->elf.plt.plist = ent;
4265 }
4266 ent->plt.refcount += 1;
4267 eh->elf.needs_plt = 1;
4268 if (eh->elf.root.root.string[0] == '.'
4269 && eh->elf.root.root.string[1] != '\0')
4270 eh->is_func = 1;
4271 return TRUE;
4272 }
4273
4274 /* Look through the relocs for a section during the first phase, and
4275 calculate needed space in the global offset table, procedure
4276 linkage table, and dynamic reloc sections. */
4277
4278 static bfd_boolean
4279 ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4280 asection *sec, const Elf_Internal_Rela *relocs)
4281 {
4282 struct ppc_link_hash_table *htab;
4283 Elf_Internal_Shdr *symtab_hdr;
4284 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4285 const Elf_Internal_Rela *rel;
4286 const Elf_Internal_Rela *rel_end;
4287 asection *sreloc;
4288 asection **opd_sym_map;
4289
4290 if (info->relocatable)
4291 return TRUE;
4292
4293 /* Don't do anything special with non-loaded, non-alloced sections.
4294 In particular, any relocs in such sections should not affect GOT
4295 and PLT reference counting (ie. we don't allow them to create GOT
4296 or PLT entries), there's no possibility or desire to optimize TLS
4297 relocs, and there's not much point in propagating relocs to shared
4298 libs that the dynamic linker won't relocate. */
4299 if ((sec->flags & SEC_ALLOC) == 0)
4300 return TRUE;
4301
4302 htab = ppc_hash_table (info);
4303 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4304
4305 sym_hashes = elf_sym_hashes (abfd);
4306 sym_hashes_end = (sym_hashes
4307 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4308 - symtab_hdr->sh_info);
4309
4310 sreloc = NULL;
4311 opd_sym_map = NULL;
4312 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4313 {
4314 /* Garbage collection needs some extra help with .opd sections.
4315 We don't want to necessarily keep everything referenced by
4316 relocs in .opd, as that would keep all functions. Instead,
4317 if we reference an .opd symbol (a function descriptor), we
4318 want to keep the function code symbol's section. This is
4319 easy for global symbols, but for local syms we need to keep
4320 information about the associated function section. Later, if
4321 edit_opd deletes entries, we'll use this array to adjust
4322 local syms in .opd. */
4323 union opd_info {
4324 asection *func_section;
4325 long entry_adjust;
4326 };
4327 bfd_size_type amt;
4328
4329 amt = sec->size * sizeof (union opd_info) / 8;
4330 opd_sym_map = bfd_zalloc (abfd, amt);
4331 if (opd_sym_map == NULL)
4332 return FALSE;
4333 ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map;
4334 }
4335
4336 if (htab->sfpr == NULL
4337 && !create_linkage_sections (htab->elf.dynobj, info))
4338 return FALSE;
4339
4340 rel_end = relocs + sec->reloc_count;
4341 for (rel = relocs; rel < rel_end; rel++)
4342 {
4343 unsigned long r_symndx;
4344 struct elf_link_hash_entry *h;
4345 enum elf_ppc64_reloc_type r_type;
4346 int tls_type = 0;
4347
4348 r_symndx = ELF64_R_SYM (rel->r_info);
4349 if (r_symndx < symtab_hdr->sh_info)
4350 h = NULL;
4351 else
4352 {
4353 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4354 while (h->root.type == bfd_link_hash_indirect
4355 || h->root.type == bfd_link_hash_warning)
4356 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4357 }
4358
4359 r_type = ELF64_R_TYPE (rel->r_info);
4360 switch (r_type)
4361 {
4362 case R_PPC64_GOT_TLSLD16:
4363 case R_PPC64_GOT_TLSLD16_LO:
4364 case R_PPC64_GOT_TLSLD16_HI:
4365 case R_PPC64_GOT_TLSLD16_HA:
4366 ppc64_tlsld_got (abfd)->refcount += 1;
4367 tls_type = TLS_TLS | TLS_LD;
4368 goto dogottls;
4369
4370 case R_PPC64_GOT_TLSGD16:
4371 case R_PPC64_GOT_TLSGD16_LO:
4372 case R_PPC64_GOT_TLSGD16_HI:
4373 case R_PPC64_GOT_TLSGD16_HA:
4374 tls_type = TLS_TLS | TLS_GD;
4375 goto dogottls;
4376
4377 case R_PPC64_GOT_TPREL16_DS:
4378 case R_PPC64_GOT_TPREL16_LO_DS:
4379 case R_PPC64_GOT_TPREL16_HI:
4380 case R_PPC64_GOT_TPREL16_HA:
4381 if (info->shared)
4382 info->flags |= DF_STATIC_TLS;
4383 tls_type = TLS_TLS | TLS_TPREL;
4384 goto dogottls;
4385
4386 case R_PPC64_GOT_DTPREL16_DS:
4387 case R_PPC64_GOT_DTPREL16_LO_DS:
4388 case R_PPC64_GOT_DTPREL16_HI:
4389 case R_PPC64_GOT_DTPREL16_HA:
4390 tls_type = TLS_TLS | TLS_DTPREL;
4391 dogottls:
4392 sec->has_tls_reloc = 1;
4393 /* Fall thru */
4394
4395 case R_PPC64_GOT16:
4396 case R_PPC64_GOT16_DS:
4397 case R_PPC64_GOT16_HA:
4398 case R_PPC64_GOT16_HI:
4399 case R_PPC64_GOT16_LO:
4400 case R_PPC64_GOT16_LO_DS:
4401 /* This symbol requires a global offset table entry. */
4402 sec->has_toc_reloc = 1;
4403 if (ppc64_elf_tdata (abfd)->got == NULL
4404 && !create_got_section (abfd, info))
4405 return FALSE;
4406
4407 if (h != NULL)
4408 {
4409 struct ppc_link_hash_entry *eh;
4410 struct got_entry *ent;
4411
4412 eh = (struct ppc_link_hash_entry *) h;
4413 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4414 if (ent->addend == rel->r_addend
4415 && ent->owner == abfd
4416 && ent->tls_type == tls_type)
4417 break;
4418 if (ent == NULL)
4419 {
4420 bfd_size_type amt = sizeof (*ent);
4421 ent = bfd_alloc (abfd, amt);
4422 if (ent == NULL)
4423 return FALSE;
4424 ent->next = eh->elf.got.glist;
4425 ent->addend = rel->r_addend;
4426 ent->owner = abfd;
4427 ent->tls_type = tls_type;
4428 ent->got.refcount = 0;
4429 eh->elf.got.glist = ent;
4430 }
4431 ent->got.refcount += 1;
4432 eh->tls_mask |= tls_type;
4433 }
4434 else
4435 /* This is a global offset table entry for a local symbol. */
4436 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4437 rel->r_addend, tls_type))
4438 return FALSE;
4439 break;
4440
4441 case R_PPC64_PLT16_HA:
4442 case R_PPC64_PLT16_HI:
4443 case R_PPC64_PLT16_LO:
4444 case R_PPC64_PLT32:
4445 case R_PPC64_PLT64:
4446 /* This symbol requires a procedure linkage table entry. We
4447 actually build the entry in adjust_dynamic_symbol,
4448 because this might be a case of linking PIC code without
4449 linking in any dynamic objects, in which case we don't
4450 need to generate a procedure linkage table after all. */
4451 if (h == NULL)
4452 {
4453 /* It does not make sense to have a procedure linkage
4454 table entry for a local symbol. */
4455 bfd_set_error (bfd_error_bad_value);
4456 return FALSE;
4457 }
4458 else
4459 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4460 rel->r_addend))
4461 return FALSE;
4462 break;
4463
4464 /* The following relocations don't need to propagate the
4465 relocation if linking a shared object since they are
4466 section relative. */
4467 case R_PPC64_SECTOFF:
4468 case R_PPC64_SECTOFF_LO:
4469 case R_PPC64_SECTOFF_HI:
4470 case R_PPC64_SECTOFF_HA:
4471 case R_PPC64_SECTOFF_DS:
4472 case R_PPC64_SECTOFF_LO_DS:
4473 case R_PPC64_DTPREL16:
4474 case R_PPC64_DTPREL16_LO:
4475 case R_PPC64_DTPREL16_HI:
4476 case R_PPC64_DTPREL16_HA:
4477 case R_PPC64_DTPREL16_DS:
4478 case R_PPC64_DTPREL16_LO_DS:
4479 case R_PPC64_DTPREL16_HIGHER:
4480 case R_PPC64_DTPREL16_HIGHERA:
4481 case R_PPC64_DTPREL16_HIGHEST:
4482 case R_PPC64_DTPREL16_HIGHESTA:
4483 break;
4484
4485 /* Nor do these. */
4486 case R_PPC64_TOC16:
4487 case R_PPC64_TOC16_LO:
4488 case R_PPC64_TOC16_HI:
4489 case R_PPC64_TOC16_HA:
4490 case R_PPC64_TOC16_DS:
4491 case R_PPC64_TOC16_LO_DS:
4492 sec->has_toc_reloc = 1;
4493 break;
4494
4495 /* This relocation describes the C++ object vtable hierarchy.
4496 Reconstruct it for later use during GC. */
4497 case R_PPC64_GNU_VTINHERIT:
4498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4499 return FALSE;
4500 break;
4501
4502 /* This relocation describes which C++ vtable entries are actually
4503 used. Record for later use during GC. */
4504 case R_PPC64_GNU_VTENTRY:
4505 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4506 return FALSE;
4507 break;
4508
4509 case R_PPC64_REL14:
4510 case R_PPC64_REL14_BRTAKEN:
4511 case R_PPC64_REL14_BRNTAKEN:
4512 htab->has_14bit_branch = 1;
4513 /* Fall through. */
4514
4515 case R_PPC64_REL24:
4516 if (h != NULL)
4517 {
4518 /* We may need a .plt entry if the function this reloc
4519 refers to is in a shared lib. */
4520 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4521 rel->r_addend))
4522 return FALSE;
4523 if (h == &htab->tls_get_addr->elf
4524 || h == &htab->tls_get_addr_fd->elf)
4525 sec->has_tls_reloc = 1;
4526 else if (htab->tls_get_addr == NULL
4527 && !strncmp (h->root.root.string, ".__tls_get_addr", 15)
4528 && (h->root.root.string[15] == 0
4529 || h->root.root.string[15] == '@'))
4530 {
4531 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4532 sec->has_tls_reloc = 1;
4533 }
4534 else if (htab->tls_get_addr_fd == NULL
4535 && !strncmp (h->root.root.string, "__tls_get_addr", 14)
4536 && (h->root.root.string[14] == 0
4537 || h->root.root.string[14] == '@'))
4538 {
4539 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
4540 sec->has_tls_reloc = 1;
4541 }
4542 }
4543 break;
4544
4545 case R_PPC64_TPREL64:
4546 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4547 if (info->shared)
4548 info->flags |= DF_STATIC_TLS;
4549 goto dotlstoc;
4550
4551 case R_PPC64_DTPMOD64:
4552 if (rel + 1 < rel_end
4553 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4554 && rel[1].r_offset == rel->r_offset + 8)
4555 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
4556 else
4557 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
4558 goto dotlstoc;
4559
4560 case R_PPC64_DTPREL64:
4561 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4562 if (rel != relocs
4563 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4564 && rel[-1].r_offset == rel->r_offset - 8)
4565 /* This is the second reloc of a dtpmod, dtprel pair.
4566 Don't mark with TLS_DTPREL. */
4567 goto dodyn;
4568
4569 dotlstoc:
4570 sec->has_tls_reloc = 1;
4571 if (h != NULL)
4572 {
4573 struct ppc_link_hash_entry *eh;
4574 eh = (struct ppc_link_hash_entry *) h;
4575 eh->tls_mask |= tls_type;
4576 }
4577 else
4578 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4579 rel->r_addend, tls_type))
4580 return FALSE;
4581
4582 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4583 {
4584 /* One extra to simplify get_tls_mask. */
4585 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
4586 ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt);
4587 if (ppc64_elf_section_data (sec)->t_symndx == NULL)
4588 return FALSE;
4589 }
4590 BFD_ASSERT (rel->r_offset % 8 == 0);
4591 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx;
4592
4593 /* Mark the second slot of a GD or LD entry.
4594 -1 to indicate GD and -2 to indicate LD. */
4595 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
4596 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1;
4597 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
4598 ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2;
4599 goto dodyn;
4600
4601 case R_PPC64_TPREL16:
4602 case R_PPC64_TPREL16_LO:
4603 case R_PPC64_TPREL16_HI:
4604 case R_PPC64_TPREL16_HA:
4605 case R_PPC64_TPREL16_DS:
4606 case R_PPC64_TPREL16_LO_DS:
4607 case R_PPC64_TPREL16_HIGHER:
4608 case R_PPC64_TPREL16_HIGHERA:
4609 case R_PPC64_TPREL16_HIGHEST:
4610 case R_PPC64_TPREL16_HIGHESTA:
4611 if (info->shared)
4612 {
4613 info->flags |= DF_STATIC_TLS;
4614 goto dodyn;
4615 }
4616 break;
4617
4618 case R_PPC64_ADDR64:
4619 if (opd_sym_map != NULL
4620 && rel + 1 < rel_end
4621 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
4622 {
4623 if (h != NULL)
4624 {
4625 if (h->root.root.string[0] == '.'
4626 && h->root.root.string[1] != 0
4627 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4628 ;
4629 else
4630 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4631 }
4632 else
4633 {
4634 asection *s;
4635
4636 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4637 r_symndx);
4638 if (s == NULL)
4639 return FALSE;
4640 else if (s != sec)
4641 opd_sym_map[rel->r_offset / 8] = s;
4642 }
4643 }
4644 /* Fall through. */
4645
4646 case R_PPC64_REL30:
4647 case R_PPC64_REL32:
4648 case R_PPC64_REL64:
4649 case R_PPC64_ADDR14:
4650 case R_PPC64_ADDR14_BRNTAKEN:
4651 case R_PPC64_ADDR14_BRTAKEN:
4652 case R_PPC64_ADDR16:
4653 case R_PPC64_ADDR16_DS:
4654 case R_PPC64_ADDR16_HA:
4655 case R_PPC64_ADDR16_HI:
4656 case R_PPC64_ADDR16_HIGHER:
4657 case R_PPC64_ADDR16_HIGHERA:
4658 case R_PPC64_ADDR16_HIGHEST:
4659 case R_PPC64_ADDR16_HIGHESTA:
4660 case R_PPC64_ADDR16_LO:
4661 case R_PPC64_ADDR16_LO_DS:
4662 case R_PPC64_ADDR24:
4663 case R_PPC64_ADDR32:
4664 case R_PPC64_UADDR16:
4665 case R_PPC64_UADDR32:
4666 case R_PPC64_UADDR64:
4667 case R_PPC64_TOC:
4668 if (h != NULL && !info->shared)
4669 /* We may need a copy reloc. */
4670 h->non_got_ref = 1;
4671
4672 /* Don't propagate .opd relocs. */
4673 if (NO_OPD_RELOCS && opd_sym_map != NULL)
4674 break;
4675
4676 /* If we are creating a shared library, and this is a reloc
4677 against a global symbol, or a non PC relative reloc
4678 against a local symbol, then we need to copy the reloc
4679 into the shared library. However, if we are linking with
4680 -Bsymbolic, we do not need to copy a reloc against a
4681 global symbol which is defined in an object we are
4682 including in the link (i.e., DEF_REGULAR is set). At
4683 this point we have not seen all the input files, so it is
4684 possible that DEF_REGULAR is not set now but will be set
4685 later (it is never cleared). In case of a weak definition,
4686 DEF_REGULAR may be cleared later by a strong definition in
4687 a shared library. We account for that possibility below by
4688 storing information in the dyn_relocs field of the hash
4689 table entry. A similar situation occurs when creating
4690 shared libraries and symbol visibility changes render the
4691 symbol local.
4692
4693 If on the other hand, we are creating an executable, we
4694 may need to keep relocations for symbols satisfied by a
4695 dynamic library if we manage to avoid copy relocs for the
4696 symbol. */
4697 dodyn:
4698 if ((info->shared
4699 && (MUST_BE_DYN_RELOC (r_type)
4700 || (h != NULL
4701 && (! info->symbolic
4702 || h->root.type == bfd_link_hash_defweak
4703 || !h->def_regular))))
4704 || (ELIMINATE_COPY_RELOCS
4705 && !info->shared
4706 && h != NULL
4707 && (h->root.type == bfd_link_hash_defweak
4708 || !h->def_regular)))
4709 {
4710 struct ppc_dyn_relocs *p;
4711 struct ppc_dyn_relocs **head;
4712
4713 /* We must copy these reloc types into the output file.
4714 Create a reloc section in dynobj and make room for
4715 this reloc. */
4716 if (sreloc == NULL)
4717 {
4718 const char *name;
4719 bfd *dynobj;
4720
4721 name = (bfd_elf_string_from_elf_section
4722 (abfd,
4723 elf_elfheader (abfd)->e_shstrndx,
4724 elf_section_data (sec)->rel_hdr.sh_name));
4725 if (name == NULL)
4726 return FALSE;
4727
4728 if (strncmp (name, ".rela", 5) != 0
4729 || strcmp (bfd_get_section_name (abfd, sec),
4730 name + 5) != 0)
4731 {
4732 (*_bfd_error_handler)
4733 (_("%B: bad relocation section name `%s\'"),
4734 abfd, name);
4735 bfd_set_error (bfd_error_bad_value);
4736 }
4737
4738 dynobj = htab->elf.dynobj;
4739 sreloc = bfd_get_section_by_name (dynobj, name);
4740 if (sreloc == NULL)
4741 {
4742 flagword flags;
4743
4744 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4745 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4746 | SEC_ALLOC | SEC_LOAD);
4747 sreloc = bfd_make_section_with_flags (dynobj,
4748 name,
4749 flags);
4750 if (sreloc == NULL
4751 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
4752 return FALSE;
4753 }
4754 elf_section_data (sec)->sreloc = sreloc;
4755 }
4756
4757 /* If this is a global symbol, we count the number of
4758 relocations we need for this symbol. */
4759 if (h != NULL)
4760 {
4761 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
4762 }
4763 else
4764 {
4765 /* Track dynamic relocs needed for local syms too.
4766 We really need local syms available to do this
4767 easily. Oh well. */
4768
4769 asection *s;
4770 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4771 sec, r_symndx);
4772 if (s == NULL)
4773 return FALSE;
4774
4775 head = ((struct ppc_dyn_relocs **)
4776 &elf_section_data (s)->local_dynrel);
4777 }
4778
4779 p = *head;
4780 if (p == NULL || p->sec != sec)
4781 {
4782 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
4783 if (p == NULL)
4784 return FALSE;
4785 p->next = *head;
4786 *head = p;
4787 p->sec = sec;
4788 p->count = 0;
4789 p->pc_count = 0;
4790 }
4791
4792 p->count += 1;
4793 if (!MUST_BE_DYN_RELOC (r_type))
4794 p->pc_count += 1;
4795 }
4796 break;
4797
4798 default:
4799 break;
4800 }
4801 }
4802
4803 return TRUE;
4804 }
4805
4806 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4807 of the code entry point, and its section. */
4808
4809 static bfd_vma
4810 opd_entry_value (asection *opd_sec,
4811 bfd_vma offset,
4812 asection **code_sec,
4813 bfd_vma *code_off)
4814 {
4815 bfd *opd_bfd = opd_sec->owner;
4816 Elf_Internal_Rela *relocs;
4817 Elf_Internal_Rela *lo, *hi, *look;
4818 bfd_vma val;
4819
4820 /* No relocs implies we are linking a --just-symbols object. */
4821 if (opd_sec->reloc_count == 0)
4822 {
4823 bfd_vma val;
4824
4825 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4826 return (bfd_vma) -1;
4827
4828 if (code_sec != NULL)
4829 {
4830 asection *sec, *likely = NULL;
4831 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4832 if (sec->vma <= val
4833 && (sec->flags & SEC_LOAD) != 0
4834 && (sec->flags & SEC_ALLOC) != 0)
4835 likely = sec;
4836 if (likely != NULL)
4837 {
4838 *code_sec = likely;
4839 if (code_off != NULL)
4840 *code_off = val - likely->vma;
4841 }
4842 }
4843 return val;
4844 }
4845
4846 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4847 if (relocs == NULL)
4848 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
4849
4850 /* Go find the opd reloc at the sym address. */
4851 lo = relocs;
4852 BFD_ASSERT (lo != NULL);
4853 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
4854 val = (bfd_vma) -1;
4855 while (lo < hi)
4856 {
4857 look = lo + (hi - lo) / 2;
4858 if (look->r_offset < offset)
4859 lo = look + 1;
4860 else if (look->r_offset > offset)
4861 hi = look;
4862 else
4863 {
4864 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4865 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4866 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4867 {
4868 unsigned long symndx = ELF64_R_SYM (look->r_info);
4869 asection *sec;
4870
4871 if (symndx < symtab_hdr->sh_info)
4872 {
4873 Elf_Internal_Sym *sym;
4874
4875 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
4876 if (sym == NULL)
4877 {
4878 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
4879 symtab_hdr->sh_info,
4880 0, NULL, NULL, NULL);
4881 if (sym == NULL)
4882 break;
4883 symtab_hdr->contents = (bfd_byte *) sym;
4884 }
4885
4886 sym += symndx;
4887 val = sym->st_value;
4888 sec = NULL;
4889 if ((sym->st_shndx != SHN_UNDEF
4890 && sym->st_shndx < SHN_LORESERVE)
4891 || sym->st_shndx > SHN_HIRESERVE)
4892 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
4893 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
4894 }
4895 else
4896 {
4897 struct elf_link_hash_entry **sym_hashes;
4898 struct elf_link_hash_entry *rh;
4899
4900 sym_hashes = elf_sym_hashes (opd_bfd);
4901 rh = sym_hashes[symndx - symtab_hdr->sh_info];
4902 while (rh->root.type == bfd_link_hash_indirect
4903 || rh->root.type == bfd_link_hash_warning)
4904 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
4905 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
4906 || rh->root.type == bfd_link_hash_defweak);
4907 val = rh->root.u.def.value;
4908 sec = rh->root.u.def.section;
4909 }
4910 val += look->r_addend;
4911 if (code_off != NULL)
4912 *code_off = val;
4913 if (code_sec != NULL)
4914 *code_sec = sec;
4915 if (sec != NULL && sec->output_section != NULL)
4916 val += sec->output_section->vma + sec->output_offset;
4917 }
4918 break;
4919 }
4920 }
4921
4922 return val;
4923 }
4924
4925 /* Return the section that should be marked against GC for a given
4926 relocation. */
4927
4928 static asection *
4929 ppc64_elf_gc_mark_hook (asection *sec,
4930 struct bfd_link_info *info,
4931 Elf_Internal_Rela *rel,
4932 struct elf_link_hash_entry *h,
4933 Elf_Internal_Sym *sym)
4934 {
4935 asection *rsec;
4936
4937 /* First mark all our entry sym sections. */
4938 if (info->gc_sym_list != NULL)
4939 {
4940 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4941 struct bfd_sym_chain *sym = info->gc_sym_list;
4942
4943 info->gc_sym_list = NULL;
4944 do
4945 {
4946 struct ppc_link_hash_entry *eh;
4947
4948 eh = (struct ppc_link_hash_entry *)
4949 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
4950 if (eh == NULL)
4951 continue;
4952 if (eh->elf.root.type != bfd_link_hash_defined
4953 && eh->elf.root.type != bfd_link_hash_defweak)
4954 continue;
4955
4956 if (eh->is_func_descriptor
4957 && (eh->oh->elf.root.type == bfd_link_hash_defined
4958 || eh->oh->elf.root.type == bfd_link_hash_defweak))
4959 rsec = eh->oh->elf.root.u.def.section;
4960 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
4961 && opd_entry_value (eh->elf.root.u.def.section,
4962 eh->elf.root.u.def.value,
4963 &rsec, NULL) != (bfd_vma) -1)
4964 ;
4965 else
4966 continue;
4967
4968 if (!rsec->gc_mark)
4969 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4970
4971 rsec = eh->elf.root.u.def.section;
4972 if (!rsec->gc_mark)
4973 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
4974
4975 sym = sym->next;
4976 }
4977 while (sym != NULL);
4978 }
4979
4980 /* Syms return NULL if we're marking .opd, so we avoid marking all
4981 function sections, as all functions are referenced in .opd. */
4982 rsec = NULL;
4983 if (get_opd_info (sec) != NULL)
4984 return rsec;
4985
4986 if (h != NULL)
4987 {
4988 enum elf_ppc64_reloc_type r_type;
4989 struct ppc_link_hash_entry *eh;
4990
4991 r_type = ELF64_R_TYPE (rel->r_info);
4992 switch (r_type)
4993 {
4994 case R_PPC64_GNU_VTINHERIT:
4995 case R_PPC64_GNU_VTENTRY:
4996 break;
4997
4998 default:
4999 switch (h->root.type)
5000 {
5001 case bfd_link_hash_defined:
5002 case bfd_link_hash_defweak:
5003 eh = (struct ppc_link_hash_entry *) h;
5004 if (eh->oh != NULL
5005 && eh->oh->is_func_descriptor
5006 && (eh->oh->elf.root.type == bfd_link_hash_defined
5007 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5008 eh = eh->oh;
5009
5010 /* Function descriptor syms cause the associated
5011 function code sym section to be marked. */
5012 if (eh->is_func_descriptor
5013 && (eh->oh->elf.root.type == bfd_link_hash_defined
5014 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5015 {
5016 /* They also mark their opd section. */
5017 if (!eh->elf.root.u.def.section->gc_mark)
5018 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5019 ppc64_elf_gc_mark_hook);
5020
5021 rsec = eh->oh->elf.root.u.def.section;
5022 }
5023 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5024 && opd_entry_value (eh->elf.root.u.def.section,
5025 eh->elf.root.u.def.value,
5026 &rsec, NULL) != (bfd_vma) -1)
5027 {
5028 if (!eh->elf.root.u.def.section->gc_mark)
5029 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5030 ppc64_elf_gc_mark_hook);
5031 }
5032 else
5033 rsec = h->root.u.def.section;
5034 break;
5035
5036 case bfd_link_hash_common:
5037 rsec = h->root.u.c.p->section;
5038 break;
5039
5040 default:
5041 break;
5042 }
5043 }
5044 }
5045 else
5046 {
5047 asection **opd_sym_section;
5048
5049 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
5050 opd_sym_section = get_opd_info (rsec);
5051 if (opd_sym_section != NULL)
5052 {
5053 if (!rsec->gc_mark)
5054 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5055
5056 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
5057 }
5058 }
5059
5060 return rsec;
5061 }
5062
5063 /* Update the .got, .plt. and dynamic reloc reference counts for the
5064 section being removed. */
5065
5066 static bfd_boolean
5067 ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5068 asection *sec, const Elf_Internal_Rela *relocs)
5069 {
5070 struct ppc_link_hash_table *htab;
5071 Elf_Internal_Shdr *symtab_hdr;
5072 struct elf_link_hash_entry **sym_hashes;
5073 struct got_entry **local_got_ents;
5074 const Elf_Internal_Rela *rel, *relend;
5075
5076 if ((sec->flags & SEC_ALLOC) == 0)
5077 return TRUE;
5078
5079 elf_section_data (sec)->local_dynrel = NULL;
5080
5081 htab = ppc_hash_table (info);
5082 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5083 sym_hashes = elf_sym_hashes (abfd);
5084 local_got_ents = elf_local_got_ents (abfd);
5085
5086 relend = relocs + sec->reloc_count;
5087 for (rel = relocs; rel < relend; rel++)
5088 {
5089 unsigned long r_symndx;
5090 enum elf_ppc64_reloc_type r_type;
5091 struct elf_link_hash_entry *h = NULL;
5092 char tls_type = 0;
5093
5094 r_symndx = ELF64_R_SYM (rel->r_info);
5095 r_type = ELF64_R_TYPE (rel->r_info);
5096 if (r_symndx >= symtab_hdr->sh_info)
5097 {
5098 struct ppc_link_hash_entry *eh;
5099 struct ppc_dyn_relocs **pp;
5100 struct ppc_dyn_relocs *p;
5101
5102 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5103 while (h->root.type == bfd_link_hash_indirect
5104 || h->root.type == bfd_link_hash_warning)
5105 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5106 eh = (struct ppc_link_hash_entry *) h;
5107
5108 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5109 if (p->sec == sec)
5110 {
5111 /* Everything must go for SEC. */
5112 *pp = p->next;
5113 break;
5114 }
5115 }
5116
5117 switch (r_type)
5118 {
5119 case R_PPC64_GOT_TLSLD16:
5120 case R_PPC64_GOT_TLSLD16_LO:
5121 case R_PPC64_GOT_TLSLD16_HI:
5122 case R_PPC64_GOT_TLSLD16_HA:
5123 ppc64_tlsld_got (abfd)->refcount -= 1;
5124 tls_type = TLS_TLS | TLS_LD;
5125 goto dogot;
5126
5127 case R_PPC64_GOT_TLSGD16:
5128 case R_PPC64_GOT_TLSGD16_LO:
5129 case R_PPC64_GOT_TLSGD16_HI:
5130 case R_PPC64_GOT_TLSGD16_HA:
5131 tls_type = TLS_TLS | TLS_GD;
5132 goto dogot;
5133
5134 case R_PPC64_GOT_TPREL16_DS:
5135 case R_PPC64_GOT_TPREL16_LO_DS:
5136 case R_PPC64_GOT_TPREL16_HI:
5137 case R_PPC64_GOT_TPREL16_HA:
5138 tls_type = TLS_TLS | TLS_TPREL;
5139 goto dogot;
5140
5141 case R_PPC64_GOT_DTPREL16_DS:
5142 case R_PPC64_GOT_DTPREL16_LO_DS:
5143 case R_PPC64_GOT_DTPREL16_HI:
5144 case R_PPC64_GOT_DTPREL16_HA:
5145 tls_type = TLS_TLS | TLS_DTPREL;
5146 goto dogot;
5147
5148 case R_PPC64_GOT16:
5149 case R_PPC64_GOT16_DS:
5150 case R_PPC64_GOT16_HA:
5151 case R_PPC64_GOT16_HI:
5152 case R_PPC64_GOT16_LO:
5153 case R_PPC64_GOT16_LO_DS:
5154 dogot:
5155 {
5156 struct got_entry *ent;
5157
5158 if (h != NULL)
5159 ent = h->got.glist;
5160 else
5161 ent = local_got_ents[r_symndx];
5162
5163 for (; ent != NULL; ent = ent->next)
5164 if (ent->addend == rel->r_addend
5165 && ent->owner == abfd
5166 && ent->tls_type == tls_type)
5167 break;
5168 if (ent == NULL)
5169 abort ();
5170 if (ent->got.refcount > 0)
5171 ent->got.refcount -= 1;
5172 }
5173 break;
5174
5175 case R_PPC64_PLT16_HA:
5176 case R_PPC64_PLT16_HI:
5177 case R_PPC64_PLT16_LO:
5178 case R_PPC64_PLT32:
5179 case R_PPC64_PLT64:
5180 case R_PPC64_REL14:
5181 case R_PPC64_REL14_BRNTAKEN:
5182 case R_PPC64_REL14_BRTAKEN:
5183 case R_PPC64_REL24:
5184 if (h != NULL)
5185 {
5186 struct plt_entry *ent;
5187
5188 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5189 if (ent->addend == rel->r_addend)
5190 break;
5191 if (ent == NULL)
5192 abort ();
5193 if (ent->plt.refcount > 0)
5194 ent->plt.refcount -= 1;
5195 }
5196 break;
5197
5198 default:
5199 break;
5200 }
5201 }
5202 return TRUE;
5203 }
5204
5205 /* The maximum size of .sfpr. */
5206 #define SFPR_MAX (218*4)
5207
5208 struct sfpr_def_parms
5209 {
5210 const char name[12];
5211 unsigned char lo, hi;
5212 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5213 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5214 };
5215
5216 /* Auto-generate _save*, _rest* functions in .sfpr. */
5217
5218 static unsigned int
5219 sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5220 {
5221 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5222 unsigned int i;
5223 size_t len = strlen (parm->name);
5224 bfd_boolean writing = FALSE;
5225 char sym[16];
5226
5227 memcpy (sym, parm->name, len);
5228 sym[len + 2] = 0;
5229
5230 for (i = parm->lo; i <= parm->hi; i++)
5231 {
5232 struct elf_link_hash_entry *h;
5233
5234 sym[len + 0] = i / 10 + '0';
5235 sym[len + 1] = i % 10 + '0';
5236 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5237 if (h != NULL
5238 && !h->def_regular)
5239 {
5240 h->root.type = bfd_link_hash_defined;
5241 h->root.u.def.section = htab->sfpr;
5242 h->root.u.def.value = htab->sfpr->size;
5243 h->type = STT_FUNC;
5244 h->def_regular = 1;
5245 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5246 writing = TRUE;
5247 if (htab->sfpr->contents == NULL)
5248 {
5249 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5250 if (htab->sfpr->contents == NULL)
5251 return FALSE;
5252 }
5253 }
5254 if (writing)
5255 {
5256 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5257 if (i != parm->hi)
5258 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5259 else
5260 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5261 htab->sfpr->size = p - htab->sfpr->contents;
5262 }
5263 }
5264
5265 return TRUE;
5266 }
5267
5268 static bfd_byte *
5269 savegpr0 (bfd *abfd, bfd_byte *p, int r)
5270 {
5271 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5272 return p + 4;
5273 }
5274
5275 static bfd_byte *
5276 savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5277 {
5278 p = savegpr0 (abfd, p, r);
5279 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5280 p = p + 4;
5281 bfd_put_32 (abfd, BLR, p);
5282 return p + 4;
5283 }
5284
5285 static bfd_byte *
5286 restgpr0 (bfd *abfd, bfd_byte *p, int r)
5287 {
5288 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5289 return p + 4;
5290 }
5291
5292 static bfd_byte *
5293 restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5294 {
5295 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5296 p = p + 4;
5297 p = restgpr0 (abfd, p, r);
5298 bfd_put_32 (abfd, MTLR_R0, p);
5299 p = p + 4;
5300 if (r == 29)
5301 {
5302 p = restgpr0 (abfd, p, 30);
5303 p = restgpr0 (abfd, p, 31);
5304 }
5305 bfd_put_32 (abfd, BLR, p);
5306 return p + 4;
5307 }
5308
5309 static bfd_byte *
5310 savegpr1 (bfd *abfd, bfd_byte *p, int r)
5311 {
5312 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5313 return p + 4;
5314 }
5315
5316 static bfd_byte *
5317 savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5318 {
5319 p = savegpr1 (abfd, p, r);
5320 bfd_put_32 (abfd, BLR, p);
5321 return p + 4;
5322 }
5323
5324 static bfd_byte *
5325 restgpr1 (bfd *abfd, bfd_byte *p, int r)
5326 {
5327 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5328 return p + 4;
5329 }
5330
5331 static bfd_byte *
5332 restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5333 {
5334 p = restgpr1 (abfd, p, r);
5335 bfd_put_32 (abfd, BLR, p);
5336 return p + 4;
5337 }
5338
5339 static bfd_byte *
5340 savefpr (bfd *abfd, bfd_byte *p, int r)
5341 {
5342 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5343 return p + 4;
5344 }
5345
5346 static bfd_byte *
5347 savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5348 {
5349 p = savefpr (abfd, p, r);
5350 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5351 p = p + 4;
5352 bfd_put_32 (abfd, BLR, p);
5353 return p + 4;
5354 }
5355
5356 static bfd_byte *
5357 restfpr (bfd *abfd, bfd_byte *p, int r)
5358 {
5359 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5360 return p + 4;
5361 }
5362
5363 static bfd_byte *
5364 restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5365 {
5366 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5367 p = p + 4;
5368 p = restfpr (abfd, p, r);
5369 bfd_put_32 (abfd, MTLR_R0, p);
5370 p = p + 4;
5371 if (r == 29)
5372 {
5373 p = restfpr (abfd, p, 30);
5374 p = restfpr (abfd, p, 31);
5375 }
5376 bfd_put_32 (abfd, BLR, p);
5377 return p + 4;
5378 }
5379
5380 static bfd_byte *
5381 savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5382 {
5383 p = savefpr (abfd, p, r);
5384 bfd_put_32 (abfd, BLR, p);
5385 return p + 4;
5386 }
5387
5388 static bfd_byte *
5389 restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5390 {
5391 p = restfpr (abfd, p, r);
5392 bfd_put_32 (abfd, BLR, p);
5393 return p + 4;
5394 }
5395
5396 static bfd_byte *
5397 savevr (bfd *abfd, bfd_byte *p, int r)
5398 {
5399 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5400 p = p + 4;
5401 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5402 return p + 4;
5403 }
5404
5405 static bfd_byte *
5406 savevr_tail (bfd *abfd, bfd_byte *p, int r)
5407 {
5408 p = savevr (abfd, p, r);
5409 bfd_put_32 (abfd, BLR, p);
5410 return p + 4;
5411 }
5412
5413 static bfd_byte *
5414 restvr (bfd *abfd, bfd_byte *p, int r)
5415 {
5416 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5417 p = p + 4;
5418 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5419 return p + 4;
5420 }
5421
5422 static bfd_byte *
5423 restvr_tail (bfd *abfd, bfd_byte *p, int r)
5424 {
5425 p = restvr (abfd, p, r);
5426 bfd_put_32 (abfd, BLR, p);
5427 return p + 4;
5428 }
5429
5430 /* Called via elf_link_hash_traverse to transfer dynamic linking
5431 information on function code symbol entries to their corresponding
5432 function descriptor symbol entries. */
5433
5434 static bfd_boolean
5435 func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5436 {
5437 struct bfd_link_info *info;
5438 struct ppc_link_hash_table *htab;
5439 struct plt_entry *ent;
5440 struct ppc_link_hash_entry *fh;
5441 struct ppc_link_hash_entry *fdh;
5442 bfd_boolean force_local;
5443
5444 fh = (struct ppc_link_hash_entry *) h;
5445 if (fh->elf.root.type == bfd_link_hash_indirect)
5446 return TRUE;
5447
5448 if (fh->elf.root.type == bfd_link_hash_warning)
5449 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
5450
5451 info = inf;
5452 htab = ppc_hash_table (info);
5453
5454 /* Resolve undefined references to dot-symbols as the value
5455 in the function descriptor, if we have one in a regular object.
5456 This is to satisfy cases like ".quad .foo". Calls to functions
5457 in dynamic objects are handled elsewhere. */
5458 if (fh->elf.root.type == bfd_link_hash_undefweak
5459 && fh->was_undefined
5460 && (fh->oh->elf.root.type == bfd_link_hash_defined
5461 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5462 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5463 && opd_entry_value (fh->oh->elf.root.u.def.section,
5464 fh->oh->elf.root.u.def.value,
5465 &fh->elf.root.u.def.section,
5466 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5467 {
5468 fh->elf.root.type = fh->oh->elf.root.type;
5469 fh->elf.forced_local = 1;
5470 }
5471
5472 /* If this is a function code symbol, transfer dynamic linking
5473 information to the function descriptor symbol. */
5474 if (!fh->is_func)
5475 return TRUE;
5476
5477 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
5478 if (ent->plt.refcount > 0)
5479 break;
5480 if (ent == NULL
5481 || fh->elf.root.root.string[0] != '.'
5482 || fh->elf.root.root.string[1] == '\0')
5483 return TRUE;
5484
5485 /* Find the corresponding function descriptor symbol. Create it
5486 as undefined if necessary. */
5487
5488 fdh = get_fdh (fh, htab);
5489 if (fdh != NULL)
5490 while (fdh->elf.root.type == bfd_link_hash_indirect
5491 || fdh->elf.root.type == bfd_link_hash_warning)
5492 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5493
5494 if (fdh == NULL
5495 && info->shared
5496 && (fh->elf.root.type == bfd_link_hash_undefined
5497 || fh->elf.root.type == bfd_link_hash_undefweak))
5498 {
5499 fdh = make_fdh (info, fh);
5500 if (fdh == NULL)
5501 return FALSE;
5502 }
5503
5504 /* Fake function descriptors are made undefweak. If the function
5505 code symbol is strong undefined, make the fake sym the same.
5506 If the function code symbol is defined, then force the fake
5507 descriptor local; We can't support overriding of symbols in a
5508 shared library on a fake descriptor. */
5509
5510 if (fdh != NULL
5511 && fdh->fake
5512 && fdh->elf.root.type == bfd_link_hash_undefweak)
5513 {
5514 if (fh->elf.root.type == bfd_link_hash_undefined)
5515 {
5516 fdh->elf.root.type = bfd_link_hash_undefined;
5517 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5518 }
5519 else if (fh->elf.root.type == bfd_link_hash_defined
5520 || fh->elf.root.type == bfd_link_hash_defweak)
5521 {
5522 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5523 }
5524 }
5525
5526 if (fdh != NULL
5527 && !fdh->elf.forced_local
5528 && (info->shared
5529 || fdh->elf.def_dynamic
5530 || fdh->elf.ref_dynamic
5531 || (fdh->elf.root.type == bfd_link_hash_undefweak
5532 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5533 {
5534 if (fdh->elf.dynindx == -1)
5535 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
5536 return FALSE;
5537 fdh->elf.ref_regular |= fh->elf.ref_regular;
5538 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5539 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5540 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
5541 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
5542 {
5543 move_plt_plist (fh, fdh);
5544 fdh->elf.needs_plt = 1;
5545 }
5546 fdh->is_func_descriptor = 1;
5547 fdh->oh = fh;
5548 fh->oh = fdh;
5549 }
5550
5551 /* Now that the info is on the function descriptor, clear the
5552 function code sym info. Any function code syms for which we
5553 don't have a definition in a regular file, we force local.
5554 This prevents a shared library from exporting syms that have
5555 been imported from another library. Function code syms that
5556 are really in the library we must leave global to prevent the
5557 linker dragging in a definition from a static library. */
5558 force_local = (!fh->elf.def_regular
5559 || fdh == NULL
5560 || !fdh->elf.def_regular
5561 || fdh->elf.forced_local);
5562 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5563
5564 return TRUE;
5565 }
5566
5567 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5568 this hook to a) provide some gcc support functions, and b) transfer
5569 dynamic linking information gathered so far on function code symbol
5570 entries, to their corresponding function descriptor symbol entries. */
5571
5572 static bfd_boolean
5573 ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5574 struct bfd_link_info *info)
5575 {
5576 struct ppc_link_hash_table *htab;
5577 unsigned int i;
5578 const struct sfpr_def_parms funcs[] =
5579 {
5580 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5581 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5582 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5583 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5584 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5585 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5586 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5587 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5588 { "._savef", 14, 31, savefpr, savefpr1_tail },
5589 { "._restf", 14, 31, restfpr, restfpr1_tail },
5590 { "_savevr_", 20, 31, savevr, savevr_tail },
5591 { "_restvr_", 20, 31, restvr, restvr_tail }
5592 };
5593
5594 htab = ppc_hash_table (info);
5595 if (htab->sfpr == NULL)
5596 /* We don't have any relocs. */
5597 return TRUE;
5598
5599 /* Provide any missing _save* and _rest* functions. */
5600 htab->sfpr->size = 0;
5601 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5602 if (!sfpr_define (info, &funcs[i]))
5603 return FALSE;
5604
5605 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
5606
5607 if (htab->sfpr->size == 0)
5608 htab->sfpr->flags |= SEC_EXCLUDE;
5609
5610 return TRUE;
5611 }
5612
5613 /* Adjust a symbol defined by a dynamic object and referenced by a
5614 regular object. The current definition is in some section of the
5615 dynamic object, but we're not including those sections. We have to
5616 change the definition to something the rest of the link can
5617 understand. */
5618
5619 static bfd_boolean
5620 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5621 struct elf_link_hash_entry *h)
5622 {
5623 struct ppc_link_hash_table *htab;
5624 asection *s;
5625 unsigned int power_of_two;
5626
5627 htab = ppc_hash_table (info);
5628
5629 /* Deal with function syms. */
5630 if (h->type == STT_FUNC
5631 || h->needs_plt)
5632 {
5633 /* Clear procedure linkage table information for any symbol that
5634 won't need a .plt entry. */
5635 struct plt_entry *ent;
5636 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5637 if (ent->plt.refcount > 0)
5638 break;
5639 if (ent == NULL
5640 || SYMBOL_CALLS_LOCAL (info, h)
5641 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5642 && h->root.type == bfd_link_hash_undefweak))
5643 {
5644 h->plt.plist = NULL;
5645 h->needs_plt = 0;
5646 }
5647 }
5648 else
5649 h->plt.plist = NULL;
5650
5651 /* If this is a weak symbol, and there is a real definition, the
5652 processor independent code will have arranged for us to see the
5653 real definition first, and we can just use the same value. */
5654 if (h->u.weakdef != NULL)
5655 {
5656 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5657 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5658 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5659 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5660 if (ELIMINATE_COPY_RELOCS)
5661 h->non_got_ref = h->u.weakdef->non_got_ref;
5662 return TRUE;
5663 }
5664
5665 /* If we are creating a shared library, we must presume that the
5666 only references to the symbol are via the global offset table.
5667 For such cases we need not do anything here; the relocations will
5668 be handled correctly by relocate_section. */
5669 if (info->shared)
5670 return TRUE;
5671
5672 /* If there are no references to this symbol that do not use the
5673 GOT, we don't need to generate a copy reloc. */
5674 if (!h->non_got_ref)
5675 return TRUE;
5676
5677 if (ELIMINATE_COPY_RELOCS)
5678 {
5679 struct ppc_link_hash_entry * eh;
5680 struct ppc_dyn_relocs *p;
5681
5682 eh = (struct ppc_link_hash_entry *) h;
5683 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5684 {
5685 s = p->sec->output_section;
5686 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5687 break;
5688 }
5689
5690 /* If we didn't find any dynamic relocs in read-only sections, then
5691 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5692 if (p == NULL)
5693 {
5694 h->non_got_ref = 0;
5695 return TRUE;
5696 }
5697 }
5698
5699 if (h->plt.plist != NULL)
5700 {
5701 /* We should never get here, but unfortunately there are versions
5702 of gcc out there that improperly (for this ABI) put initialized
5703 function pointers, vtable refs and suchlike in read-only
5704 sections. Allow them to proceed, but warn that this might
5705 break at runtime. */
5706 (*_bfd_error_handler)
5707 (_("copy reloc against `%s' requires lazy plt linking; "
5708 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5709 h->root.root.string);
5710 }
5711
5712 /* This is a reference to a symbol defined by a dynamic object which
5713 is not a function. */
5714
5715 /* We must allocate the symbol in our .dynbss section, which will
5716 become part of the .bss section of the executable. There will be
5717 an entry for this symbol in the .dynsym section. The dynamic
5718 object will contain position independent code, so all references
5719 from the dynamic object to this symbol will go through the global
5720 offset table. The dynamic linker will use the .dynsym entry to
5721 determine the address it must put in the global offset table, so
5722 both the dynamic object and the regular object will refer to the
5723 same memory location for the variable. */
5724
5725 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5726 to copy the initial value out of the dynamic object and into the
5727 runtime process image. We need to remember the offset into the
5728 .rela.bss section we are going to use. */
5729 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5730 {
5731 htab->relbss->size += sizeof (Elf64_External_Rela);
5732 h->needs_copy = 1;
5733 }
5734
5735 /* We need to figure out the alignment required for this symbol. I
5736 have no idea how ELF linkers handle this. */
5737 power_of_two = bfd_log2 (h->size);
5738 if (power_of_two > 4)
5739 power_of_two = 4;
5740
5741 /* Apply the required alignment. */
5742 s = htab->dynbss;
5743 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5744 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5745 {
5746 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
5747 return FALSE;
5748 }
5749
5750 /* Define the symbol as being at this point in the section. */
5751 h->root.u.def.section = s;
5752 h->root.u.def.value = s->size;
5753
5754 /* Increment the section size to make room for the symbol. */
5755 s->size += h->size;
5756
5757 return TRUE;
5758 }
5759
5760 /* If given a function descriptor symbol, hide both the function code
5761 sym and the descriptor. */
5762 static void
5763 ppc64_elf_hide_symbol (struct bfd_link_info *info,
5764 struct elf_link_hash_entry *h,
5765 bfd_boolean force_local)
5766 {
5767 struct ppc_link_hash_entry *eh;
5768 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5769
5770 eh = (struct ppc_link_hash_entry *) h;
5771 if (eh->is_func_descriptor)
5772 {
5773 struct ppc_link_hash_entry *fh = eh->oh;
5774
5775 if (fh == NULL)
5776 {
5777 const char *p, *q;
5778 struct ppc_link_hash_table *htab;
5779 char save;
5780
5781 /* We aren't supposed to use alloca in BFD because on
5782 systems which do not have alloca the version in libiberty
5783 calls xmalloc, which might cause the program to crash
5784 when it runs out of memory. This function doesn't have a
5785 return status, so there's no way to gracefully return an
5786 error. So cheat. We know that string[-1] can be safely
5787 accessed; It's either a string in an ELF string table,
5788 or allocated in an objalloc structure. */
5789
5790 p = eh->elf.root.root.string - 1;
5791 save = *p;
5792 *(char *) p = '.';
5793 htab = ppc_hash_table (info);
5794 fh = (struct ppc_link_hash_entry *)
5795 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5796 *(char *) p = save;
5797
5798 /* Unfortunately, if it so happens that the string we were
5799 looking for was allocated immediately before this string,
5800 then we overwrote the string terminator. That's the only
5801 reason the lookup should fail. */
5802 if (fh == NULL)
5803 {
5804 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5805 while (q >= eh->elf.root.root.string && *q == *p)
5806 --q, --p;
5807 if (q < eh->elf.root.root.string && *p == '.')
5808 fh = (struct ppc_link_hash_entry *)
5809 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
5810 }
5811 if (fh != NULL)
5812 {
5813 eh->oh = fh;
5814 fh->oh = eh;
5815 }
5816 }
5817 if (fh != NULL)
5818 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5819 }
5820 }
5821
5822 static bfd_boolean
5823 get_sym_h (struct elf_link_hash_entry **hp,
5824 Elf_Internal_Sym **symp,
5825 asection **symsecp,
5826 char **tls_maskp,
5827 Elf_Internal_Sym **locsymsp,
5828 unsigned long r_symndx,
5829 bfd *ibfd)
5830 {
5831 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5832
5833 if (r_symndx >= symtab_hdr->sh_info)
5834 {
5835 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
5836 struct elf_link_hash_entry *h;
5837
5838 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5839 while (h->root.type == bfd_link_hash_indirect
5840 || h->root.type == bfd_link_hash_warning)
5841 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5842
5843 if (hp != NULL)
5844 *hp = h;
5845
5846 if (symp != NULL)
5847 *symp = NULL;
5848
5849 if (symsecp != NULL)
5850 {
5851 asection *symsec = NULL;
5852 if (h->root.type == bfd_link_hash_defined
5853 || h->root.type == bfd_link_hash_defweak)
5854 symsec = h->root.u.def.section;
5855 *symsecp = symsec;
5856 }
5857
5858 if (tls_maskp != NULL)
5859 {
5860 struct ppc_link_hash_entry *eh;
5861
5862 eh = (struct ppc_link_hash_entry *) h;
5863 *tls_maskp = &eh->tls_mask;
5864 }
5865 }
5866 else
5867 {
5868 Elf_Internal_Sym *sym;
5869 Elf_Internal_Sym *locsyms = *locsymsp;
5870
5871 if (locsyms == NULL)
5872 {
5873 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
5874 if (locsyms == NULL)
5875 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
5876 symtab_hdr->sh_info,
5877 0, NULL, NULL, NULL);
5878 if (locsyms == NULL)
5879 return FALSE;
5880 *locsymsp = locsyms;
5881 }
5882 sym = locsyms + r_symndx;
5883
5884 if (hp != NULL)
5885 *hp = NULL;
5886
5887 if (symp != NULL)
5888 *symp = sym;
5889
5890 if (symsecp != NULL)
5891 {
5892 asection *symsec = NULL;
5893 if ((sym->st_shndx != SHN_UNDEF
5894 && sym->st_shndx < SHN_LORESERVE)
5895 || sym->st_shndx > SHN_HIRESERVE)
5896 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
5897 *symsecp = symsec;
5898 }
5899
5900 if (tls_maskp != NULL)
5901 {
5902 struct got_entry **lgot_ents;
5903 char *tls_mask;
5904
5905 tls_mask = NULL;
5906 lgot_ents = elf_local_got_ents (ibfd);
5907 if (lgot_ents != NULL)
5908 {
5909 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
5910 tls_mask = &lgot_masks[r_symndx];
5911 }
5912 *tls_maskp = tls_mask;
5913 }
5914 }
5915 return TRUE;
5916 }
5917
5918 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
5919 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
5920 type suitable for optimization, and 1 otherwise. */
5921
5922 static int
5923 get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
5924 Elf_Internal_Sym **locsymsp,
5925 const Elf_Internal_Rela *rel, bfd *ibfd)
5926 {
5927 unsigned long r_symndx;
5928 int next_r;
5929 struct elf_link_hash_entry *h;
5930 Elf_Internal_Sym *sym;
5931 asection *sec;
5932 bfd_vma off;
5933
5934 r_symndx = ELF64_R_SYM (rel->r_info);
5935 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5936 return 0;
5937
5938 if ((*tls_maskp != NULL && **tls_maskp != 0)
5939 || sec == NULL
5940 || ppc64_elf_section_data (sec)->t_symndx == NULL)
5941 return 1;
5942
5943 /* Look inside a TOC section too. */
5944 if (h != NULL)
5945 {
5946 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
5947 off = h->root.u.def.value;
5948 }
5949 else
5950 off = sym->st_value;
5951 off += rel->r_addend;
5952 BFD_ASSERT (off % 8 == 0);
5953 r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8];
5954 next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1];
5955 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
5956 return 0;
5957 if (toc_symndx != NULL)
5958 *toc_symndx = r_symndx;
5959 if ((h == NULL
5960 || ((h->root.type == bfd_link_hash_defined
5961 || h->root.type == bfd_link_hash_defweak)
5962 && !h->def_dynamic))
5963 && (next_r == -1 || next_r == -2))
5964 return 1 - next_r;
5965 return 1;
5966 }
5967
5968 /* Adjust all global syms defined in opd sections. In gcc generated
5969 code for the old ABI, these will already have been done. */
5970
5971 static bfd_boolean
5972 adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
5973 {
5974 struct ppc_link_hash_entry *eh;
5975 asection *sym_sec;
5976 long *opd_adjust;
5977
5978 if (h->root.type == bfd_link_hash_indirect)
5979 return TRUE;
5980
5981 if (h->root.type == bfd_link_hash_warning)
5982 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5983
5984 if (h->root.type != bfd_link_hash_defined
5985 && h->root.type != bfd_link_hash_defweak)
5986 return TRUE;
5987
5988 eh = (struct ppc_link_hash_entry *) h;
5989 if (eh->adjust_done)
5990 return TRUE;
5991
5992 sym_sec = eh->elf.root.u.def.section;
5993 opd_adjust = get_opd_info (sym_sec);
5994 if (opd_adjust != NULL)
5995 {
5996 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
5997 if (adjust == -1)
5998 {
5999 /* This entry has been deleted. */
6000 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
6001 if (dsec == NULL)
6002 {
6003 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6004 if (elf_discarded_section (dsec))
6005 {
6006 ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
6007 break;
6008 }
6009 }
6010 eh->elf.root.u.def.value = 0;
6011 eh->elf.root.u.def.section = dsec;
6012 }
6013 else
6014 eh->elf.root.u.def.value += adjust;
6015 eh->adjust_done = 1;
6016 }
6017 return TRUE;
6018 }
6019
6020 /* Handles decrementing dynamic reloc counts for the reloc specified by
6021 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6022 have already been determined. */
6023
6024 static bfd_boolean
6025 dec_dynrel_count (bfd_vma r_info,
6026 asection *sec,
6027 struct bfd_link_info *info,
6028 Elf_Internal_Sym **local_syms,
6029 struct elf_link_hash_entry *h,
6030 asection *sym_sec)
6031 {
6032 enum elf_ppc64_reloc_type r_type;
6033 struct ppc_dyn_relocs *p;
6034 struct ppc_dyn_relocs **pp;
6035
6036 /* Can this reloc be dynamic? This switch, and later tests here
6037 should be kept in sync with the code in check_relocs. */
6038 r_type = ELF64_R_TYPE (r_info);
6039 switch (r_type)
6040 {
6041 default:
6042 return TRUE;
6043
6044 case R_PPC64_TPREL16:
6045 case R_PPC64_TPREL16_LO:
6046 case R_PPC64_TPREL16_HI:
6047 case R_PPC64_TPREL16_HA:
6048 case R_PPC64_TPREL16_DS:
6049 case R_PPC64_TPREL16_LO_DS:
6050 case R_PPC64_TPREL16_HIGHER:
6051 case R_PPC64_TPREL16_HIGHERA:
6052 case R_PPC64_TPREL16_HIGHEST:
6053 case R_PPC64_TPREL16_HIGHESTA:
6054 if (!info->shared)
6055 return TRUE;
6056
6057 case R_PPC64_TPREL64:
6058 case R_PPC64_DTPMOD64:
6059 case R_PPC64_DTPREL64:
6060 case R_PPC64_ADDR64:
6061 case R_PPC64_REL30:
6062 case R_PPC64_REL32:
6063 case R_PPC64_REL64:
6064 case R_PPC64_ADDR14:
6065 case R_PPC64_ADDR14_BRNTAKEN:
6066 case R_PPC64_ADDR14_BRTAKEN:
6067 case R_PPC64_ADDR16:
6068 case R_PPC64_ADDR16_DS:
6069 case R_PPC64_ADDR16_HA:
6070 case R_PPC64_ADDR16_HI:
6071 case R_PPC64_ADDR16_HIGHER:
6072 case R_PPC64_ADDR16_HIGHERA:
6073 case R_PPC64_ADDR16_HIGHEST:
6074 case R_PPC64_ADDR16_HIGHESTA:
6075 case R_PPC64_ADDR16_LO:
6076 case R_PPC64_ADDR16_LO_DS:
6077 case R_PPC64_ADDR24:
6078 case R_PPC64_ADDR32:
6079 case R_PPC64_UADDR16:
6080 case R_PPC64_UADDR32:
6081 case R_PPC64_UADDR64:
6082 case R_PPC64_TOC:
6083 break;
6084 }
6085
6086 if (local_syms != NULL)
6087 {
6088 unsigned long r_symndx;
6089 Elf_Internal_Sym *sym;
6090 bfd *ibfd = sec->owner;
6091
6092 r_symndx = ELF64_R_SYM (r_info);
6093 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6094 return FALSE;
6095 }
6096
6097 if ((info->shared
6098 && (MUST_BE_DYN_RELOC (r_type)
6099 || (h != NULL
6100 && (!info->symbolic
6101 || h->root.type == bfd_link_hash_defweak
6102 || !h->def_regular))))
6103 || (ELIMINATE_COPY_RELOCS
6104 && !info->shared
6105 && h != NULL
6106 && (h->root.type == bfd_link_hash_defweak
6107 || !h->def_regular)))
6108 ;
6109 else
6110 return TRUE;
6111
6112 if (h != NULL)
6113 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
6114 else if (sym_sec != NULL)
6115 pp = (struct ppc_dyn_relocs **) &elf_section_data (sym_sec)->local_dynrel;
6116 else
6117 pp = (struct ppc_dyn_relocs **) &elf_section_data (sec)->local_dynrel;
6118
6119 while ((p = *pp) != NULL)
6120 {
6121 if (p->sec == sec)
6122 {
6123 if (!MUST_BE_DYN_RELOC (r_type))
6124 p->pc_count -= 1;
6125 p->count -= 1;
6126 if (p->count == 0)
6127 *pp = p->next;
6128 return TRUE;
6129 }
6130 pp = &p->next;
6131 }
6132
6133 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6134 sec->owner, sec);
6135 bfd_set_error (bfd_error_bad_value);
6136 return FALSE;
6137 }
6138
6139 /* Remove unused Official Procedure Descriptor entries. Currently we
6140 only remove those associated with functions in discarded link-once
6141 sections, or weakly defined functions that have been overridden. It
6142 would be possible to remove many more entries for statically linked
6143 applications. */
6144
6145 bfd_boolean
6146 ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6147 bfd_boolean no_opd_opt,
6148 bfd_boolean non_overlapping)
6149 {
6150 bfd *ibfd;
6151 bfd_boolean some_edited = FALSE;
6152 asection *need_pad = NULL;
6153
6154 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6155 {
6156 asection *sec;
6157 Elf_Internal_Rela *relstart, *rel, *relend;
6158 Elf_Internal_Shdr *symtab_hdr;
6159 Elf_Internal_Sym *local_syms;
6160 struct elf_link_hash_entry **sym_hashes;
6161 bfd_vma offset;
6162 bfd_size_type amt;
6163 long *opd_adjust;
6164 bfd_boolean need_edit, add_aux_fields;
6165 bfd_size_type cnt_16b = 0;
6166
6167 sec = bfd_get_section_by_name (ibfd, ".opd");
6168 if (sec == NULL || sec->size == 0)
6169 continue;
6170
6171 amt = sec->size * sizeof (long) / 8;
6172 opd_adjust = get_opd_info (sec);
6173 if (opd_adjust == NULL)
6174 {
6175 /* check_relocs hasn't been called. Must be a ld -r link
6176 or --just-symbols object. */
6177 opd_adjust = bfd_alloc (obfd, amt);
6178 if (opd_adjust == NULL)
6179 return FALSE;
6180 ppc64_elf_section_data (sec)->opd.adjust = opd_adjust;
6181 }
6182 memset (opd_adjust, 0, amt);
6183
6184 if (no_opd_opt)
6185 continue;
6186
6187 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6188 continue;
6189
6190 if (sec->output_section == bfd_abs_section_ptr)
6191 continue;
6192
6193 /* Look through the section relocs. */
6194 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6195 continue;
6196
6197 local_syms = NULL;
6198 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6199 sym_hashes = elf_sym_hashes (ibfd);
6200
6201 /* Read the relocations. */
6202 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6203 info->keep_memory);
6204 if (relstart == NULL)
6205 return FALSE;
6206
6207 /* First run through the relocs to check they are sane, and to
6208 determine whether we need to edit this opd section. */
6209 need_edit = FALSE;
6210 need_pad = sec;
6211 offset = 0;
6212 relend = relstart + sec->reloc_count;
6213 for (rel = relstart; rel < relend; )
6214 {
6215 enum elf_ppc64_reloc_type r_type;
6216 unsigned long r_symndx;
6217 asection *sym_sec;
6218 struct elf_link_hash_entry *h;
6219 Elf_Internal_Sym *sym;
6220
6221 /* .opd contains a regular array of 16 or 24 byte entries. We're
6222 only interested in the reloc pointing to a function entry
6223 point. */
6224 if (rel->r_offset != offset
6225 || rel + 1 >= relend
6226 || (rel + 1)->r_offset != offset + 8)
6227 {
6228 /* If someone messes with .opd alignment then after a
6229 "ld -r" we might have padding in the middle of .opd.
6230 Also, there's nothing to prevent someone putting
6231 something silly in .opd with the assembler. No .opd
6232 optimization for them! */
6233 broken_opd:
6234 (*_bfd_error_handler)
6235 (_("%B: .opd is not a regular array of opd entries"), ibfd);
6236 need_edit = FALSE;
6237 break;
6238 }
6239
6240 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6241 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6242 {
6243 (*_bfd_error_handler)
6244 (_("%B: unexpected reloc type %u in .opd section"),
6245 ibfd, r_type);
6246 need_edit = FALSE;
6247 break;
6248 }
6249
6250 r_symndx = ELF64_R_SYM (rel->r_info);
6251 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6252 r_symndx, ibfd))
6253 goto error_ret;
6254
6255 if (sym_sec == NULL || sym_sec->owner == NULL)
6256 {
6257 const char *sym_name;
6258 if (h != NULL)
6259 sym_name = h->root.root.string;
6260 else
6261 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6262 sym_sec);
6263
6264 (*_bfd_error_handler)
6265 (_("%B: undefined sym `%s' in .opd section"),
6266 ibfd, sym_name);
6267 need_edit = FALSE;
6268 break;
6269 }
6270
6271 /* opd entries are always for functions defined in the
6272 current input bfd. If the symbol isn't defined in the
6273 input bfd, then we won't be using the function in this
6274 bfd; It must be defined in a linkonce section in another
6275 bfd, or is weak. It's also possible that we are
6276 discarding the function due to a linker script /DISCARD/,
6277 which we test for via the output_section. */
6278 if (sym_sec->owner != ibfd
6279 || sym_sec->output_section == bfd_abs_section_ptr)
6280 need_edit = TRUE;
6281
6282 rel += 2;
6283 if (rel == relend
6284 || (rel + 1 == relend && rel->r_offset == offset + 16))
6285 {
6286 if (sec->size == offset + 24)
6287 {
6288 need_pad = NULL;
6289 break;
6290 }
6291 if (rel == relend && sec->size == offset + 16)
6292 {
6293 cnt_16b++;
6294 break;
6295 }
6296 goto broken_opd;
6297 }
6298
6299 if (rel->r_offset == offset + 24)
6300 offset += 24;
6301 else if (rel->r_offset != offset + 16)
6302 goto broken_opd;
6303 else if (rel + 1 < relend
6304 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6305 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6306 {
6307 offset += 16;
6308 cnt_16b++;
6309 }
6310 else if (rel + 2 < relend
6311 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6312 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6313 {
6314 offset += 24;
6315 rel += 1;
6316 }
6317 else
6318 goto broken_opd;
6319 }
6320
6321 add_aux_fields = non_overlapping && cnt_16b > 0;
6322
6323 if (need_edit || add_aux_fields)
6324 {
6325 Elf_Internal_Rela *write_rel;
6326 bfd_byte *rptr, *wptr;
6327 bfd_byte *new_contents = NULL;
6328 bfd_boolean skip;
6329 long opd_ent_size;
6330
6331 /* This seems a waste of time as input .opd sections are all
6332 zeros as generated by gcc, but I suppose there's no reason
6333 this will always be so. We might start putting something in
6334 the third word of .opd entries. */
6335 if ((sec->flags & SEC_IN_MEMORY) == 0)
6336 {
6337 bfd_byte *loc;
6338 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6339 {
6340 if (loc != NULL)
6341 free (loc);
6342 error_ret:
6343 if (local_syms != NULL
6344 && symtab_hdr->contents != (unsigned char *) local_syms)
6345 free (local_syms);
6346 if (elf_section_data (sec)->relocs != relstart)
6347 free (relstart);
6348 return FALSE;
6349 }
6350 sec->contents = loc;
6351 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6352 }
6353
6354 elf_section_data (sec)->relocs = relstart;
6355
6356 new_contents = sec->contents;
6357 if (add_aux_fields)
6358 {
6359 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6360 if (new_contents == NULL)
6361 return FALSE;
6362 need_pad = FALSE;
6363 }
6364 wptr = new_contents;
6365 rptr = sec->contents;
6366
6367 write_rel = relstart;
6368 skip = FALSE;
6369 offset = 0;
6370 opd_ent_size = 0;
6371 for (rel = relstart; rel < relend; rel++)
6372 {
6373 unsigned long r_symndx;
6374 asection *sym_sec;
6375 struct elf_link_hash_entry *h;
6376 Elf_Internal_Sym *sym;
6377
6378 r_symndx = ELF64_R_SYM (rel->r_info);
6379 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6380 r_symndx, ibfd))
6381 goto error_ret;
6382
6383 if (rel->r_offset == offset)
6384 {
6385 struct ppc_link_hash_entry *fdh = NULL;
6386
6387 /* See if the .opd entry is full 24 byte or
6388 16 byte (with fd_aux entry overlapped with next
6389 fd_func). */
6390 opd_ent_size = 24;
6391 if ((rel + 2 == relend && sec->size == offset + 16)
6392 || (rel + 3 < relend
6393 && rel[2].r_offset == offset + 16
6394 && rel[3].r_offset == offset + 24
6395 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6396 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6397 opd_ent_size = 16;
6398
6399 if (h != NULL
6400 && h->root.root.string[0] == '.')
6401 {
6402 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6403 ppc_hash_table (info));
6404 if (fdh != NULL
6405 && fdh->elf.root.type != bfd_link_hash_defined
6406 && fdh->elf.root.type != bfd_link_hash_defweak)
6407 fdh = NULL;
6408 }
6409
6410 skip = (sym_sec->owner != ibfd
6411 || sym_sec->output_section == bfd_abs_section_ptr);
6412 if (skip)
6413 {
6414 if (fdh != NULL && sym_sec->owner == ibfd)
6415 {
6416 /* Arrange for the function descriptor sym
6417 to be dropped. */
6418 fdh->elf.root.u.def.value = 0;
6419 fdh->elf.root.u.def.section = sym_sec;
6420 }
6421 opd_adjust[rel->r_offset / 8] = -1;
6422 }
6423 else
6424 {
6425 /* We'll be keeping this opd entry. */
6426
6427 if (fdh != NULL)
6428 {
6429 /* Redefine the function descriptor symbol to
6430 this location in the opd section. It is
6431 necessary to update the value here rather
6432 than using an array of adjustments as we do
6433 for local symbols, because various places
6434 in the generic ELF code use the value
6435 stored in u.def.value. */
6436 fdh->elf.root.u.def.value = wptr - new_contents;
6437 fdh->adjust_done = 1;
6438 }
6439
6440 /* Local syms are a bit tricky. We could
6441 tweak them as they can be cached, but
6442 we'd need to look through the local syms
6443 for the function descriptor sym which we
6444 don't have at the moment. So keep an
6445 array of adjustments. */
6446 opd_adjust[rel->r_offset / 8]
6447 = (wptr - new_contents) - (rptr - sec->contents);
6448
6449 if (wptr != rptr)
6450 memcpy (wptr, rptr, opd_ent_size);
6451 wptr += opd_ent_size;
6452 if (add_aux_fields && opd_ent_size == 16)
6453 {
6454 memset (wptr, '\0', 8);
6455 wptr += 8;
6456 }
6457 }
6458 rptr += opd_ent_size;
6459 offset += opd_ent_size;
6460 }
6461
6462 if (skip)
6463 {
6464 if (!dec_dynrel_count (rel->r_info, sec, info,
6465 NULL, h, sym_sec))
6466 goto error_ret;
6467 }
6468 else
6469 {
6470 /* We need to adjust any reloc offsets to point to the
6471 new opd entries. While we're at it, we may as well
6472 remove redundant relocs. */
6473 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
6474 if (write_rel != rel)
6475 memcpy (write_rel, rel, sizeof (*rel));
6476 ++write_rel;
6477 }
6478 }
6479
6480 sec->size = wptr - new_contents;
6481 sec->reloc_count = write_rel - relstart;
6482 if (add_aux_fields)
6483 {
6484 free (sec->contents);
6485 sec->contents = new_contents;
6486 }
6487
6488 /* Fudge the size too, as this is used later in
6489 elf_bfd_final_link if we are emitting relocs. */
6490 elf_section_data (sec)->rel_hdr.sh_size
6491 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6492 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
6493 some_edited = TRUE;
6494 }
6495 else if (elf_section_data (sec)->relocs != relstart)
6496 free (relstart);
6497
6498 if (local_syms != NULL
6499 && symtab_hdr->contents != (unsigned char *) local_syms)
6500 {
6501 if (!info->keep_memory)
6502 free (local_syms);
6503 else
6504 symtab_hdr->contents = (unsigned char *) local_syms;
6505 }
6506 }
6507
6508 if (some_edited)
6509 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6510
6511 /* If we are doing a final link and the last .opd entry is just 16 byte
6512 long, add a 8 byte padding after it. */
6513 if (need_pad != NULL && !info->relocatable)
6514 {
6515 bfd_byte *p;
6516
6517 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6518 {
6519 BFD_ASSERT (need_pad->size > 0);
6520
6521 p = bfd_malloc (need_pad->size + 8);
6522 if (p == NULL)
6523 return FALSE;
6524
6525 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6526 p, 0, need_pad->size))
6527 return FALSE;
6528
6529 need_pad->contents = p;
6530 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6531 }
6532 else
6533 {
6534 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6535 if (p == NULL)
6536 return FALSE;
6537
6538 need_pad->contents = p;
6539 }
6540
6541 memset (need_pad->contents + need_pad->size, 0, 8);
6542 need_pad->size += 8;
6543 }
6544
6545 return TRUE;
6546 }
6547
6548 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6549
6550 asection *
6551 ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
6552 {
6553 struct ppc_link_hash_table *htab;
6554
6555 htab = ppc_hash_table (info);
6556 if (htab->tls_get_addr != NULL)
6557 {
6558 struct ppc_link_hash_entry *h = htab->tls_get_addr;
6559
6560 while (h->elf.root.type == bfd_link_hash_indirect
6561 || h->elf.root.type == bfd_link_hash_warning)
6562 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6563
6564 htab->tls_get_addr = h;
6565
6566 if (htab->tls_get_addr_fd == NULL
6567 && h->oh != NULL
6568 && h->oh->is_func_descriptor
6569 && (h->oh->elf.root.type == bfd_link_hash_defined
6570 || h->oh->elf.root.type == bfd_link_hash_defweak))
6571 htab->tls_get_addr_fd = h->oh;
6572 }
6573
6574 if (htab->tls_get_addr_fd != NULL)
6575 {
6576 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6577
6578 while (h->elf.root.type == bfd_link_hash_indirect
6579 || h->elf.root.type == bfd_link_hash_warning)
6580 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6581
6582 htab->tls_get_addr_fd = h;
6583 }
6584
6585 return _bfd_elf_tls_setup (obfd, info);
6586 }
6587
6588 /* Run through all the TLS relocs looking for optimization
6589 opportunities. The linker has been hacked (see ppc64elf.em) to do
6590 a preliminary section layout so that we know the TLS segment
6591 offsets. We can't optimize earlier because some optimizations need
6592 to know the tp offset, and we need to optimize before allocating
6593 dynamic relocations. */
6594
6595 bfd_boolean
6596 ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6597 {
6598 bfd *ibfd;
6599 asection *sec;
6600 struct ppc_link_hash_table *htab;
6601
6602 if (info->relocatable || info->shared)
6603 return TRUE;
6604
6605 htab = ppc_hash_table (info);
6606 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6607 {
6608 Elf_Internal_Sym *locsyms = NULL;
6609
6610 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6611 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6612 {
6613 Elf_Internal_Rela *relstart, *rel, *relend;
6614 int expecting_tls_get_addr;
6615
6616 /* Read the relocations. */
6617 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6618 info->keep_memory);
6619 if (relstart == NULL)
6620 return FALSE;
6621
6622 expecting_tls_get_addr = 0;
6623 relend = relstart + sec->reloc_count;
6624 for (rel = relstart; rel < relend; rel++)
6625 {
6626 enum elf_ppc64_reloc_type r_type;
6627 unsigned long r_symndx;
6628 struct elf_link_hash_entry *h;
6629 Elf_Internal_Sym *sym;
6630 asection *sym_sec;
6631 char *tls_mask;
6632 char tls_set, tls_clear, tls_type = 0;
6633 bfd_vma value;
6634 bfd_boolean ok_tprel, is_local;
6635
6636 r_symndx = ELF64_R_SYM (rel->r_info);
6637 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6638 r_symndx, ibfd))
6639 {
6640 err_free_rel:
6641 if (elf_section_data (sec)->relocs != relstart)
6642 free (relstart);
6643 if (locsyms != NULL
6644 && (elf_tdata (ibfd)->symtab_hdr.contents
6645 != (unsigned char *) locsyms))
6646 free (locsyms);
6647 return FALSE;
6648 }
6649
6650 if (h != NULL)
6651 {
6652 if (h->root.type != bfd_link_hash_defined
6653 && h->root.type != bfd_link_hash_defweak)
6654 continue;
6655 value = h->root.u.def.value;
6656 }
6657 else
6658 /* Symbols referenced by TLS relocs must be of type
6659 STT_TLS. So no need for .opd local sym adjust. */
6660 value = sym->st_value;
6661
6662 ok_tprel = FALSE;
6663 is_local = FALSE;
6664 if (h == NULL
6665 || !h->def_dynamic)
6666 {
6667 is_local = TRUE;
6668 value += sym_sec->output_offset;
6669 value += sym_sec->output_section->vma;
6670 value -= htab->elf.tls_sec->vma;
6671 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6672 < (bfd_vma) 1 << 32);
6673 }
6674
6675 r_type = ELF64_R_TYPE (rel->r_info);
6676 switch (r_type)
6677 {
6678 case R_PPC64_GOT_TLSLD16:
6679 case R_PPC64_GOT_TLSLD16_LO:
6680 case R_PPC64_GOT_TLSLD16_HI:
6681 case R_PPC64_GOT_TLSLD16_HA:
6682 /* These relocs should never be against a symbol
6683 defined in a shared lib. Leave them alone if
6684 that turns out to be the case. */
6685 ppc64_tlsld_got (ibfd)->refcount -= 1;
6686 if (!is_local)
6687 continue;
6688
6689 /* LD -> LE */
6690 tls_set = 0;
6691 tls_clear = TLS_LD;
6692 tls_type = TLS_TLS | TLS_LD;
6693 expecting_tls_get_addr = 1;
6694 break;
6695
6696 case R_PPC64_GOT_TLSGD16:
6697 case R_PPC64_GOT_TLSGD16_LO:
6698 case R_PPC64_GOT_TLSGD16_HI:
6699 case R_PPC64_GOT_TLSGD16_HA:
6700 if (ok_tprel)
6701 /* GD -> LE */
6702 tls_set = 0;
6703 else
6704 /* GD -> IE */
6705 tls_set = TLS_TLS | TLS_TPRELGD;
6706 tls_clear = TLS_GD;
6707 tls_type = TLS_TLS | TLS_GD;
6708 expecting_tls_get_addr = 1;
6709 break;
6710
6711 case R_PPC64_GOT_TPREL16_DS:
6712 case R_PPC64_GOT_TPREL16_LO_DS:
6713 case R_PPC64_GOT_TPREL16_HI:
6714 case R_PPC64_GOT_TPREL16_HA:
6715 expecting_tls_get_addr = 0;
6716 if (ok_tprel)
6717 {
6718 /* IE -> LE */
6719 tls_set = 0;
6720 tls_clear = TLS_TPREL;
6721 tls_type = TLS_TLS | TLS_TPREL;
6722 break;
6723 }
6724 else
6725 continue;
6726
6727 case R_PPC64_REL14:
6728 case R_PPC64_REL14_BRTAKEN:
6729 case R_PPC64_REL14_BRNTAKEN:
6730 case R_PPC64_REL24:
6731 if (h != NULL
6732 && (h == &htab->tls_get_addr->elf
6733 || h == &htab->tls_get_addr_fd->elf))
6734 {
6735 if (!expecting_tls_get_addr
6736 && rel != relstart
6737 && ((ELF64_R_TYPE (rel[-1].r_info)
6738 == R_PPC64_TOC16)
6739 || (ELF64_R_TYPE (rel[-1].r_info)
6740 == R_PPC64_TOC16_LO)))
6741 {
6742 /* Check for toc tls entries. */
6743 char *toc_tls;
6744 int retval;
6745
6746 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
6747 rel - 1, ibfd);
6748 if (retval == 0)
6749 goto err_free_rel;
6750 if (toc_tls != NULL)
6751 expecting_tls_get_addr = retval > 1;
6752 }
6753
6754 if (expecting_tls_get_addr)
6755 {
6756 struct plt_entry *ent;
6757 for (ent = h->plt.plist; ent; ent = ent->next)
6758 if (ent->addend == 0)
6759 {
6760 if (ent->plt.refcount > 0)
6761 ent->plt.refcount -= 1;
6762 break;
6763 }
6764 }
6765 }
6766 expecting_tls_get_addr = 0;
6767 continue;
6768
6769 case R_PPC64_TPREL64:
6770 expecting_tls_get_addr = 0;
6771 if (ok_tprel)
6772 {
6773 /* IE -> LE */
6774 tls_set = TLS_EXPLICIT;
6775 tls_clear = TLS_TPREL;
6776 break;
6777 }
6778 else
6779 continue;
6780
6781 case R_PPC64_DTPMOD64:
6782 expecting_tls_get_addr = 0;
6783 if (rel + 1 < relend
6784 && (rel[1].r_info
6785 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6786 && rel[1].r_offset == rel->r_offset + 8)
6787 {
6788 if (ok_tprel)
6789 /* GD -> LE */
6790 tls_set = TLS_EXPLICIT | TLS_GD;
6791 else
6792 /* GD -> IE */
6793 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6794 tls_clear = TLS_GD;
6795 }
6796 else
6797 {
6798 if (!is_local)
6799 continue;
6800
6801 /* LD -> LE */
6802 tls_set = TLS_EXPLICIT;
6803 tls_clear = TLS_LD;
6804 }
6805 break;
6806
6807 default:
6808 expecting_tls_get_addr = 0;
6809 continue;
6810 }
6811
6812 if ((tls_set & TLS_EXPLICIT) == 0)
6813 {
6814 struct got_entry *ent;
6815
6816 /* Adjust got entry for this reloc. */
6817 if (h != NULL)
6818 ent = h->got.glist;
6819 else
6820 ent = elf_local_got_ents (ibfd)[r_symndx];
6821
6822 for (; ent != NULL; ent = ent->next)
6823 if (ent->addend == rel->r_addend
6824 && ent->owner == ibfd
6825 && ent->tls_type == tls_type)
6826 break;
6827 if (ent == NULL)
6828 abort ();
6829
6830 if (tls_set == 0)
6831 {
6832 /* We managed to get rid of a got entry. */
6833 if (ent->got.refcount > 0)
6834 ent->got.refcount -= 1;
6835 }
6836 }
6837 else
6838 {
6839 /* If we got rid of a DTPMOD/DTPREL reloc pair then
6840 we'll lose one or two dyn relocs. */
6841 if (!dec_dynrel_count (rel->r_info, sec, info,
6842 NULL, h, sym_sec))
6843 return FALSE;
6844
6845 if (tls_set == (TLS_EXPLICIT | TLS_GD))
6846 {
6847 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
6848 NULL, h, sym_sec))
6849 return FALSE;
6850 }
6851 }
6852
6853 *tls_mask |= tls_set;
6854 *tls_mask &= ~tls_clear;
6855 }
6856
6857 if (elf_section_data (sec)->relocs != relstart)
6858 free (relstart);
6859 }
6860
6861 if (locsyms != NULL
6862 && (elf_tdata (ibfd)->symtab_hdr.contents
6863 != (unsigned char *) locsyms))
6864 {
6865 if (!info->keep_memory)
6866 free (locsyms);
6867 else
6868 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6869 }
6870 }
6871 return TRUE;
6872 }
6873
6874 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
6875 the values of any global symbols in a toc section that has been
6876 edited. Globals in toc sections should be a rarity, so this function
6877 sets a flag if any are found in toc sections other than the one just
6878 edited, so that futher hash table traversals can be avoided. */
6879
6880 struct adjust_toc_info
6881 {
6882 asection *toc;
6883 unsigned long *skip;
6884 bfd_boolean global_toc_syms;
6885 };
6886
6887 static bfd_boolean
6888 adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
6889 {
6890 struct ppc_link_hash_entry *eh;
6891 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
6892
6893 if (h->root.type == bfd_link_hash_indirect)
6894 return TRUE;
6895
6896 if (h->root.type == bfd_link_hash_warning)
6897 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6898
6899 if (h->root.type != bfd_link_hash_defined
6900 && h->root.type != bfd_link_hash_defweak)
6901 return TRUE;
6902
6903 eh = (struct ppc_link_hash_entry *) h;
6904 if (eh->adjust_done)
6905 return TRUE;
6906
6907 if (eh->elf.root.u.def.section == toc_inf->toc)
6908 {
6909 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
6910 if (skip != (unsigned long) -1)
6911 eh->elf.root.u.def.value -= skip;
6912 else
6913 {
6914 (*_bfd_error_handler)
6915 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
6916 eh->elf.root.u.def.section = &bfd_abs_section;
6917 eh->elf.root.u.def.value = 0;
6918 }
6919 eh->adjust_done = 1;
6920 }
6921 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
6922 toc_inf->global_toc_syms = TRUE;
6923
6924 return TRUE;
6925 }
6926
6927 /* Examine all relocs referencing .toc sections in order to remove
6928 unused .toc entries. */
6929
6930 bfd_boolean
6931 ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
6932 {
6933 bfd *ibfd;
6934 struct adjust_toc_info toc_inf;
6935
6936 toc_inf.global_toc_syms = TRUE;
6937 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6938 {
6939 asection *toc, *sec;
6940 Elf_Internal_Shdr *symtab_hdr;
6941 Elf_Internal_Sym *local_syms;
6942 struct elf_link_hash_entry **sym_hashes;
6943 Elf_Internal_Rela *relstart, *rel;
6944 unsigned long *skip, *drop;
6945 unsigned char *used;
6946 unsigned char *keep, last, some_unused;
6947
6948 toc = bfd_get_section_by_name (ibfd, ".toc");
6949 if (toc == NULL
6950 || toc->size == 0
6951 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
6952 || elf_discarded_section (toc))
6953 continue;
6954
6955 local_syms = NULL;
6956 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6957 sym_hashes = elf_sym_hashes (ibfd);
6958
6959 /* Look at sections dropped from the final link. */
6960 skip = NULL;
6961 relstart = NULL;
6962 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6963 {
6964 if (sec->reloc_count == 0
6965 || !elf_discarded_section (sec)
6966 || get_opd_info (sec)
6967 || (sec->flags & SEC_ALLOC) == 0
6968 || (sec->flags & SEC_DEBUGGING) != 0)
6969 continue;
6970
6971 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
6972 if (relstart == NULL)
6973 goto error_ret;
6974
6975 /* Run through the relocs to see which toc entries might be
6976 unused. */
6977 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
6978 {
6979 enum elf_ppc64_reloc_type r_type;
6980 unsigned long r_symndx;
6981 asection *sym_sec;
6982 struct elf_link_hash_entry *h;
6983 Elf_Internal_Sym *sym;
6984 bfd_vma val;
6985
6986 r_type = ELF64_R_TYPE (rel->r_info);
6987 switch (r_type)
6988 {
6989 default:
6990 continue;
6991
6992 case R_PPC64_TOC16:
6993 case R_PPC64_TOC16_LO:
6994 case R_PPC64_TOC16_HI:
6995 case R_PPC64_TOC16_HA:
6996 case R_PPC64_TOC16_DS:
6997 case R_PPC64_TOC16_LO_DS:
6998 break;
6999 }
7000
7001 r_symndx = ELF64_R_SYM (rel->r_info);
7002 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7003 r_symndx, ibfd))
7004 goto error_ret;
7005
7006 if (sym_sec != toc)
7007 continue;
7008
7009 if (h != NULL)
7010 val = h->root.u.def.value;
7011 else
7012 val = sym->st_value;
7013 val += rel->r_addend;
7014
7015 if (val >= toc->size)
7016 continue;
7017
7018 /* Anything in the toc ought to be aligned to 8 bytes.
7019 If not, don't mark as unused. */
7020 if (val & 7)
7021 continue;
7022
7023 if (skip == NULL)
7024 {
7025 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7026 if (skip == NULL)
7027 goto error_ret;
7028 }
7029
7030 skip[val >> 3] = 1;
7031 }
7032
7033 if (elf_section_data (sec)->relocs != relstart)
7034 free (relstart);
7035 }
7036
7037 if (skip == NULL)
7038 continue;
7039
7040 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7041 if (used == NULL)
7042 {
7043 error_ret:
7044 if (local_syms != NULL
7045 && symtab_hdr->contents != (unsigned char *) local_syms)
7046 free (local_syms);
7047 if (sec != NULL
7048 && relstart != NULL
7049 && elf_section_data (sec)->relocs != relstart)
7050 free (relstart);
7051 if (skip != NULL)
7052 free (skip);
7053 return FALSE;
7054 }
7055
7056 /* Now check all kept sections that might reference the toc. */
7057 for (sec = ibfd->sections;
7058 sec != NULL;
7059 /* Check the toc itself last. */
7060 sec = (sec == toc ? NULL
7061 : sec->next == toc && sec->next->next ? sec->next->next
7062 : sec->next == NULL ? toc
7063 : sec->next))
7064 {
7065 int repeat;
7066
7067 if (sec->reloc_count == 0
7068 || elf_discarded_section (sec)
7069 || get_opd_info (sec)
7070 || (sec->flags & SEC_ALLOC) == 0
7071 || (sec->flags & SEC_DEBUGGING) != 0)
7072 continue;
7073
7074 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7075 if (relstart == NULL)
7076 goto error_ret;
7077
7078 /* Mark toc entries referenced as used. */
7079 repeat = 0;
7080 do
7081 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7082 {
7083 enum elf_ppc64_reloc_type r_type;
7084 unsigned long r_symndx;
7085 asection *sym_sec;
7086 struct elf_link_hash_entry *h;
7087 Elf_Internal_Sym *sym;
7088 bfd_vma val;
7089
7090 r_type = ELF64_R_TYPE (rel->r_info);
7091 switch (r_type)
7092 {
7093 case R_PPC64_TOC16:
7094 case R_PPC64_TOC16_LO:
7095 case R_PPC64_TOC16_HI:
7096 case R_PPC64_TOC16_HA:
7097 case R_PPC64_TOC16_DS:
7098 case R_PPC64_TOC16_LO_DS:
7099 /* In case we're taking addresses of toc entries. */
7100 case R_PPC64_ADDR64:
7101 break;
7102
7103 default:
7104 continue;
7105 }
7106
7107 r_symndx = ELF64_R_SYM (rel->r_info);
7108 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7109 r_symndx, ibfd))
7110 {
7111 free (used);
7112 goto error_ret;
7113 }
7114
7115 if (sym_sec != toc)
7116 continue;
7117
7118 if (h != NULL)
7119 val = h->root.u.def.value;
7120 else
7121 val = sym->st_value;
7122 val += rel->r_addend;
7123
7124 if (val >= toc->size)
7125 continue;
7126
7127 /* For the toc section, we only mark as used if
7128 this entry itself isn't unused. */
7129 if (sec == toc
7130 && !used[val >> 3]
7131 && (used[rel->r_offset >> 3]
7132 || !skip[rel->r_offset >> 3]))
7133 /* Do all the relocs again, to catch reference
7134 chains. */
7135 repeat = 1;
7136
7137 used[val >> 3] = 1;
7138 }
7139 while (repeat);
7140 }
7141
7142 /* Merge the used and skip arrays. Assume that TOC
7143 doublewords not appearing as either used or unused belong
7144 to to an entry more than one doubleword in size. */
7145 for (drop = skip, keep = used, last = 0, some_unused = 0;
7146 drop < skip + (toc->size + 7) / 8;
7147 ++drop, ++keep)
7148 {
7149 if (*keep)
7150 {
7151 *drop = 0;
7152 last = 0;
7153 }
7154 else if (*drop)
7155 {
7156 some_unused = 1;
7157 last = 1;
7158 }
7159 else
7160 *drop = last;
7161 }
7162
7163 free (used);
7164
7165 if (some_unused)
7166 {
7167 bfd_byte *contents, *src;
7168 unsigned long off;
7169
7170 /* Shuffle the toc contents, and at the same time convert the
7171 skip array from booleans into offsets. */
7172 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7173 goto error_ret;
7174
7175 elf_section_data (toc)->this_hdr.contents = contents;
7176
7177 for (src = contents, off = 0, drop = skip;
7178 src < contents + toc->size;
7179 src += 8, ++drop)
7180 {
7181 if (*drop)
7182 {
7183 *drop = (unsigned long) -1;
7184 off += 8;
7185 }
7186 else if (off != 0)
7187 {
7188 *drop = off;
7189 memcpy (src - off, src, 8);
7190 }
7191 }
7192 toc->rawsize = toc->size;
7193 toc->size = src - contents - off;
7194
7195 if (toc->reloc_count != 0)
7196 {
7197 Elf_Internal_Rela *wrel;
7198 bfd_size_type sz;
7199
7200 /* Read toc relocs. */
7201 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7202 TRUE);
7203 if (relstart == NULL)
7204 goto error_ret;
7205
7206 /* Remove unused toc relocs, and adjust those we keep. */
7207 wrel = relstart;
7208 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7209 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7210 {
7211 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7212 wrel->r_info = rel->r_info;
7213 wrel->r_addend = rel->r_addend;
7214 ++wrel;
7215 }
7216 else if (!dec_dynrel_count (rel->r_info, toc, info,
7217 &local_syms, NULL, NULL))
7218 goto error_ret;
7219
7220 toc->reloc_count = wrel - relstart;
7221 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7222 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7223 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7224 }
7225
7226 /* Adjust addends for relocs against the toc section sym. */
7227 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7228 {
7229 if (sec->reloc_count == 0
7230 || elf_discarded_section (sec))
7231 continue;
7232
7233 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7234 TRUE);
7235 if (relstart == NULL)
7236 goto error_ret;
7237
7238 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7239 {
7240 enum elf_ppc64_reloc_type r_type;
7241 unsigned long r_symndx;
7242 asection *sym_sec;
7243 struct elf_link_hash_entry *h;
7244 Elf_Internal_Sym *sym;
7245
7246 r_type = ELF64_R_TYPE (rel->r_info);
7247 switch (r_type)
7248 {
7249 default:
7250 continue;
7251
7252 case R_PPC64_TOC16:
7253 case R_PPC64_TOC16_LO:
7254 case R_PPC64_TOC16_HI:
7255 case R_PPC64_TOC16_HA:
7256 case R_PPC64_TOC16_DS:
7257 case R_PPC64_TOC16_LO_DS:
7258 case R_PPC64_ADDR64:
7259 break;
7260 }
7261
7262 r_symndx = ELF64_R_SYM (rel->r_info);
7263 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7264 r_symndx, ibfd))
7265 goto error_ret;
7266
7267 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7268 continue;
7269
7270 rel->r_addend -= skip[rel->r_addend >> 3];
7271 }
7272 }
7273
7274 /* We shouldn't have local or global symbols defined in the TOC,
7275 but handle them anyway. */
7276 if (local_syms != NULL)
7277 {
7278 Elf_Internal_Sym *sym;
7279
7280 for (sym = local_syms;
7281 sym < local_syms + symtab_hdr->sh_info;
7282 ++sym)
7283 if (sym->st_shndx != SHN_UNDEF
7284 && (sym->st_shndx < SHN_LORESERVE
7285 || sym->st_shndx > SHN_HIRESERVE)
7286 && sym->st_value != 0
7287 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7288 {
7289 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7290 sym->st_value -= skip[sym->st_value >> 3];
7291 else
7292 {
7293 (*_bfd_error_handler)
7294 (_("%s defined in removed toc entry"),
7295 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7296 NULL));
7297 sym->st_value = 0;
7298 sym->st_shndx = SHN_ABS;
7299 }
7300 symtab_hdr->contents = (unsigned char *) local_syms;
7301 }
7302 }
7303
7304 /* Finally, adjust any global syms defined in the toc. */
7305 if (toc_inf.global_toc_syms)
7306 {
7307 toc_inf.toc = toc;
7308 toc_inf.skip = skip;
7309 toc_inf.global_toc_syms = FALSE;
7310 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7311 &toc_inf);
7312 }
7313 }
7314
7315 if (local_syms != NULL
7316 && symtab_hdr->contents != (unsigned char *) local_syms)
7317 {
7318 if (!info->keep_memory)
7319 free (local_syms);
7320 else
7321 symtab_hdr->contents = (unsigned char *) local_syms;
7322 }
7323 free (skip);
7324 }
7325
7326 return TRUE;
7327 }
7328
7329 /* Allocate space in .plt, .got and associated reloc sections for
7330 dynamic relocs. */
7331
7332 static bfd_boolean
7333 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7334 {
7335 struct bfd_link_info *info;
7336 struct ppc_link_hash_table *htab;
7337 asection *s;
7338 struct ppc_link_hash_entry *eh;
7339 struct ppc_dyn_relocs *p;
7340 struct got_entry *gent;
7341
7342 if (h->root.type == bfd_link_hash_indirect)
7343 return TRUE;
7344
7345 if (h->root.type == bfd_link_hash_warning)
7346 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7347
7348 info = (struct bfd_link_info *) inf;
7349 htab = ppc_hash_table (info);
7350
7351 if (htab->elf.dynamic_sections_created
7352 && h->dynindx != -1
7353 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
7354 {
7355 struct plt_entry *pent;
7356 bfd_boolean doneone = FALSE;
7357 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7358 if (pent->plt.refcount > 0)
7359 {
7360 /* If this is the first .plt entry, make room for the special
7361 first entry. */
7362 s = htab->plt;
7363 if (s->size == 0)
7364 s->size += PLT_INITIAL_ENTRY_SIZE;
7365
7366 pent->plt.offset = s->size;
7367
7368 /* Make room for this entry. */
7369 s->size += PLT_ENTRY_SIZE;
7370
7371 /* Make room for the .glink code. */
7372 s = htab->glink;
7373 if (s->size == 0)
7374 s->size += GLINK_CALL_STUB_SIZE;
7375 /* We need bigger stubs past index 32767. */
7376 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7377 s->size += 4;
7378 s->size += 2*4;
7379
7380 /* We also need to make an entry in the .rela.plt section. */
7381 s = htab->relplt;
7382 s->size += sizeof (Elf64_External_Rela);
7383 doneone = TRUE;
7384 }
7385 else
7386 pent->plt.offset = (bfd_vma) -1;
7387 if (!doneone)
7388 {
7389 h->plt.plist = NULL;
7390 h->needs_plt = 0;
7391 }
7392 }
7393 else
7394 {
7395 h->plt.plist = NULL;
7396 h->needs_plt = 0;
7397 }
7398
7399 eh = (struct ppc_link_hash_entry *) h;
7400 /* Run through the TLS GD got entries first if we're changing them
7401 to TPREL. */
7402 if ((eh->tls_mask & TLS_TPRELGD) != 0)
7403 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7404 if (gent->got.refcount > 0
7405 && (gent->tls_type & TLS_GD) != 0)
7406 {
7407 /* This was a GD entry that has been converted to TPREL. If
7408 there happens to be a TPREL entry we can use that one. */
7409 struct got_entry *ent;
7410 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7411 if (ent->got.refcount > 0
7412 && (ent->tls_type & TLS_TPREL) != 0
7413 && ent->addend == gent->addend
7414 && ent->owner == gent->owner)
7415 {
7416 gent->got.refcount = 0;
7417 break;
7418 }
7419
7420 /* If not, then we'll be using our own TPREL entry. */
7421 if (gent->got.refcount != 0)
7422 gent->tls_type = TLS_TLS | TLS_TPREL;
7423 }
7424
7425 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7426 if (gent->got.refcount > 0)
7427 {
7428 bfd_boolean dyn;
7429
7430 /* Make sure this symbol is output as a dynamic symbol.
7431 Undefined weak syms won't yet be marked as dynamic,
7432 nor will all TLS symbols. */
7433 if (h->dynindx == -1
7434 && !h->forced_local)
7435 {
7436 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7437 return FALSE;
7438 }
7439
7440 if ((gent->tls_type & TLS_LD) != 0
7441 && !h->def_dynamic)
7442 {
7443 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
7444 continue;
7445 }
7446
7447 s = ppc64_elf_tdata (gent->owner)->got;
7448 gent->got.offset = s->size;
7449 s->size
7450 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
7451 dyn = htab->elf.dynamic_sections_created;
7452 if ((info->shared
7453 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7454 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7455 || h->root.type != bfd_link_hash_undefweak))
7456 ppc64_elf_tdata (gent->owner)->relgot->size
7457 += (gent->tls_type & eh->tls_mask & TLS_GD
7458 ? 2 * sizeof (Elf64_External_Rela)
7459 : sizeof (Elf64_External_Rela));
7460 }
7461 else
7462 gent->got.offset = (bfd_vma) -1;
7463
7464 if (eh->dyn_relocs == NULL)
7465 return TRUE;
7466
7467 /* In the shared -Bsymbolic case, discard space allocated for
7468 dynamic pc-relative relocs against symbols which turn out to be
7469 defined in regular objects. For the normal shared case, discard
7470 space for relocs that have become local due to symbol visibility
7471 changes. */
7472
7473 if (info->shared)
7474 {
7475 /* Relocs that use pc_count are those that appear on a call insn,
7476 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7477 generated via assembly. We want calls to protected symbols to
7478 resolve directly to the function rather than going via the plt.
7479 If people want function pointer comparisons to work as expected
7480 then they should avoid writing weird assembly. */
7481 if (SYMBOL_CALLS_LOCAL (info, h))
7482 {
7483 struct ppc_dyn_relocs **pp;
7484
7485 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
7486 {
7487 p->count -= p->pc_count;
7488 p->pc_count = 0;
7489 if (p->count == 0)
7490 *pp = p->next;
7491 else
7492 pp = &p->next;
7493 }
7494 }
7495
7496 /* Also discard relocs on undefined weak syms with non-default
7497 visibility. */
7498 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7499 && h->root.type == bfd_link_hash_undefweak)
7500 eh->dyn_relocs = NULL;
7501 }
7502 else if (ELIMINATE_COPY_RELOCS)
7503 {
7504 /* For the non-shared case, discard space for relocs against
7505 symbols which turn out to need copy relocs or are not
7506 dynamic. */
7507
7508 if (!h->non_got_ref
7509 && h->def_dynamic
7510 && !h->def_regular)
7511 {
7512 /* Make sure this symbol is output as a dynamic symbol.
7513 Undefined weak syms won't yet be marked as dynamic. */
7514 if (h->dynindx == -1
7515 && !h->forced_local)
7516 {
7517 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7518 return FALSE;
7519 }
7520
7521 /* If that succeeded, we know we'll be keeping all the
7522 relocs. */
7523 if (h->dynindx != -1)
7524 goto keep;
7525 }
7526
7527 eh->dyn_relocs = NULL;
7528
7529 keep: ;
7530 }
7531
7532 /* Finally, allocate space. */
7533 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7534 {
7535 asection *sreloc = elf_section_data (p->sec)->sreloc;
7536 sreloc->size += p->count * sizeof (Elf64_External_Rela);
7537 }
7538
7539 return TRUE;
7540 }
7541
7542 /* Find any dynamic relocs that apply to read-only sections. */
7543
7544 static bfd_boolean
7545 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
7546 {
7547 struct ppc_link_hash_entry *eh;
7548 struct ppc_dyn_relocs *p;
7549
7550 if (h->root.type == bfd_link_hash_warning)
7551 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7552
7553 eh = (struct ppc_link_hash_entry *) h;
7554 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7555 {
7556 asection *s = p->sec->output_section;
7557
7558 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7559 {
7560 struct bfd_link_info *info = inf;
7561
7562 info->flags |= DF_TEXTREL;
7563
7564 /* Not an error, just cut short the traversal. */
7565 return FALSE;
7566 }
7567 }
7568 return TRUE;
7569 }
7570
7571 /* Set the sizes of the dynamic sections. */
7572
7573 static bfd_boolean
7574 ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7575 struct bfd_link_info *info)
7576 {
7577 struct ppc_link_hash_table *htab;
7578 bfd *dynobj;
7579 asection *s;
7580 bfd_boolean relocs;
7581 bfd *ibfd;
7582
7583 htab = ppc_hash_table (info);
7584 dynobj = htab->elf.dynobj;
7585 if (dynobj == NULL)
7586 abort ();
7587
7588 if (htab->elf.dynamic_sections_created)
7589 {
7590 /* Set the contents of the .interp section to the interpreter. */
7591 if (info->executable)
7592 {
7593 s = bfd_get_section_by_name (dynobj, ".interp");
7594 if (s == NULL)
7595 abort ();
7596 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7597 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7598 }
7599 }
7600
7601 /* Set up .got offsets for local syms, and space for local dynamic
7602 relocs. */
7603 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7604 {
7605 struct got_entry **lgot_ents;
7606 struct got_entry **end_lgot_ents;
7607 char *lgot_masks;
7608 bfd_size_type locsymcount;
7609 Elf_Internal_Shdr *symtab_hdr;
7610 asection *srel;
7611
7612 if (!is_ppc64_elf_target (ibfd->xvec))
7613 continue;
7614
7615 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7616 {
7617 s = ppc64_elf_tdata (ibfd)->got;
7618 ppc64_tlsld_got (ibfd)->offset = s->size;
7619 s->size += 16;
7620 if (info->shared)
7621 {
7622 srel = ppc64_elf_tdata (ibfd)->relgot;
7623 srel->size += sizeof (Elf64_External_Rela);
7624 }
7625 }
7626 else
7627 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7628
7629 for (s = ibfd->sections; s != NULL; s = s->next)
7630 {
7631 struct ppc_dyn_relocs *p;
7632
7633 for (p = *((struct ppc_dyn_relocs **)
7634 &elf_section_data (s)->local_dynrel);
7635 p != NULL;
7636 p = p->next)
7637 {
7638 if (!bfd_is_abs_section (p->sec)
7639 && bfd_is_abs_section (p->sec->output_section))
7640 {
7641 /* Input section has been discarded, either because
7642 it is a copy of a linkonce section or due to
7643 linker script /DISCARD/, so we'll be discarding
7644 the relocs too. */
7645 }
7646 else if (p->count != 0)
7647 {
7648 srel = elf_section_data (p->sec)->sreloc;
7649 srel->size += p->count * sizeof (Elf64_External_Rela);
7650 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7651 info->flags |= DF_TEXTREL;
7652 }
7653 }
7654 }
7655
7656 lgot_ents = elf_local_got_ents (ibfd);
7657 if (!lgot_ents)
7658 continue;
7659
7660 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7661 locsymcount = symtab_hdr->sh_info;
7662 end_lgot_ents = lgot_ents + locsymcount;
7663 lgot_masks = (char *) end_lgot_ents;
7664 s = ppc64_elf_tdata (ibfd)->got;
7665 srel = ppc64_elf_tdata (ibfd)->relgot;
7666 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
7667 {
7668 struct got_entry *ent;
7669
7670 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7671 if (ent->got.refcount > 0)
7672 {
7673 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
7674 {
7675 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
7676 {
7677 ppc64_tlsld_got (ibfd)->offset = s->size;
7678 s->size += 16;
7679 if (info->shared)
7680 srel->size += sizeof (Elf64_External_Rela);
7681 }
7682 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
7683 }
7684 else
7685 {
7686 ent->got.offset = s->size;
7687 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
7688 {
7689 s->size += 16;
7690 if (info->shared)
7691 srel->size += 2 * sizeof (Elf64_External_Rela);
7692 }
7693 else
7694 {
7695 s->size += 8;
7696 if (info->shared)
7697 srel->size += sizeof (Elf64_External_Rela);
7698 }
7699 }
7700 }
7701 else
7702 ent->got.offset = (bfd_vma) -1;
7703 }
7704 }
7705
7706 /* Allocate global sym .plt and .got entries, and space for global
7707 sym dynamic relocs. */
7708 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
7709
7710 /* We now have determined the sizes of the various dynamic sections.
7711 Allocate memory for them. */
7712 relocs = FALSE;
7713 for (s = dynobj->sections; s != NULL; s = s->next)
7714 {
7715 if ((s->flags & SEC_LINKER_CREATED) == 0)
7716 continue;
7717
7718 if (s == htab->brlt || s == htab->relbrlt)
7719 /* These haven't been allocated yet; don't strip. */
7720 continue;
7721 else if (s == htab->got
7722 || s == htab->plt
7723 || s == htab->glink
7724 || s == htab->dynbss)
7725 {
7726 /* Strip this section if we don't need it; see the
7727 comment below. */
7728 }
7729 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
7730 {
7731 if (s->size != 0)
7732 {
7733 if (s != htab->relplt)
7734 relocs = TRUE;
7735
7736 /* We use the reloc_count field as a counter if we need
7737 to copy relocs into the output file. */
7738 s->reloc_count = 0;
7739 }
7740 }
7741 else
7742 {
7743 /* It's not one of our sections, so don't allocate space. */
7744 continue;
7745 }
7746
7747 if (s->size == 0)
7748 {
7749 /* If we don't need this section, strip it from the
7750 output file. This is mostly to handle .rela.bss and
7751 .rela.plt. We must create both sections in
7752 create_dynamic_sections, because they must be created
7753 before the linker maps input sections to output
7754 sections. The linker does that before
7755 adjust_dynamic_symbol is called, and it is that
7756 function which decides whether anything needs to go
7757 into these sections. */
7758 s->flags |= SEC_EXCLUDE;
7759 continue;
7760 }
7761
7762 if ((s->flags & SEC_HAS_CONTENTS) == 0)
7763 continue;
7764
7765 /* Allocate memory for the section contents. We use bfd_zalloc
7766 here in case unused entries are not reclaimed before the
7767 section's contents are written out. This should not happen,
7768 but this way if it does we get a R_PPC64_NONE reloc in .rela
7769 sections instead of garbage.
7770 We also rely on the section contents being zero when writing
7771 the GOT. */
7772 s->contents = bfd_zalloc (dynobj, s->size);
7773 if (s->contents == NULL)
7774 return FALSE;
7775 }
7776
7777 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7778 {
7779 if (!is_ppc64_elf_target (ibfd->xvec))
7780 continue;
7781
7782 s = ppc64_elf_tdata (ibfd)->got;
7783 if (s != NULL && s != htab->got)
7784 {
7785 if (s->size == 0)
7786 s->flags |= SEC_EXCLUDE;
7787 else
7788 {
7789 s->contents = bfd_zalloc (ibfd, s->size);
7790 if (s->contents == NULL)
7791 return FALSE;
7792 }
7793 }
7794 s = ppc64_elf_tdata (ibfd)->relgot;
7795 if (s != NULL)
7796 {
7797 if (s->size == 0)
7798 s->flags |= SEC_EXCLUDE;
7799 else
7800 {
7801 s->contents = bfd_zalloc (ibfd, s->size);
7802 if (s->contents == NULL)
7803 return FALSE;
7804 relocs = TRUE;
7805 s->reloc_count = 0;
7806 }
7807 }
7808 }
7809
7810 if (htab->elf.dynamic_sections_created)
7811 {
7812 /* Add some entries to the .dynamic section. We fill in the
7813 values later, in ppc64_elf_finish_dynamic_sections, but we
7814 must add the entries now so that we get the correct size for
7815 the .dynamic section. The DT_DEBUG entry is filled in by the
7816 dynamic linker and used by the debugger. */
7817 #define add_dynamic_entry(TAG, VAL) \
7818 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
7819
7820 if (info->executable)
7821 {
7822 if (!add_dynamic_entry (DT_DEBUG, 0))
7823 return FALSE;
7824 }
7825
7826 if (htab->plt != NULL && htab->plt->size != 0)
7827 {
7828 if (!add_dynamic_entry (DT_PLTGOT, 0)
7829 || !add_dynamic_entry (DT_PLTRELSZ, 0)
7830 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
7831 || !add_dynamic_entry (DT_JMPREL, 0)
7832 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
7833 return FALSE;
7834 }
7835
7836 if (NO_OPD_RELOCS)
7837 {
7838 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
7839 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
7840 return FALSE;
7841 }
7842
7843 if (relocs)
7844 {
7845 if (!add_dynamic_entry (DT_RELA, 0)
7846 || !add_dynamic_entry (DT_RELASZ, 0)
7847 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
7848 return FALSE;
7849
7850 /* If any dynamic relocs apply to a read-only section,
7851 then we need a DT_TEXTREL entry. */
7852 if ((info->flags & DF_TEXTREL) == 0)
7853 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
7854
7855 if ((info->flags & DF_TEXTREL) != 0)
7856 {
7857 if (!add_dynamic_entry (DT_TEXTREL, 0))
7858 return FALSE;
7859 }
7860 }
7861 }
7862 #undef add_dynamic_entry
7863
7864 return TRUE;
7865 }
7866
7867 /* Determine the type of stub needed, if any, for a call. */
7868
7869 static inline enum ppc_stub_type
7870 ppc_type_of_stub (asection *input_sec,
7871 const Elf_Internal_Rela *rel,
7872 struct ppc_link_hash_entry **hash,
7873 bfd_vma destination)
7874 {
7875 struct ppc_link_hash_entry *h = *hash;
7876 bfd_vma location;
7877 bfd_vma branch_offset;
7878 bfd_vma max_branch_offset;
7879 enum elf_ppc64_reloc_type r_type;
7880
7881 if (h != NULL)
7882 {
7883 if (h->oh != NULL
7884 && h->oh->is_func_descriptor)
7885 h = h->oh;
7886
7887 if (h->elf.dynindx != -1)
7888 {
7889 struct plt_entry *ent;
7890
7891 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
7892 if (ent->addend == rel->r_addend
7893 && ent->plt.offset != (bfd_vma) -1)
7894 {
7895 *hash = h;
7896 return ppc_stub_plt_call;
7897 }
7898 }
7899
7900 if (!(h->elf.root.type == bfd_link_hash_defined
7901 || h->elf.root.type == bfd_link_hash_defweak)
7902 || h->elf.root.u.def.section->output_section == NULL)
7903 return ppc_stub_none;
7904 }
7905
7906 /* Determine where the call point is. */
7907 location = (input_sec->output_offset
7908 + input_sec->output_section->vma
7909 + rel->r_offset);
7910
7911 branch_offset = destination - location;
7912 r_type = ELF64_R_TYPE (rel->r_info);
7913
7914 /* Determine if a long branch stub is needed. */
7915 max_branch_offset = 1 << 25;
7916 if (r_type != R_PPC64_REL24)
7917 max_branch_offset = 1 << 15;
7918
7919 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
7920 /* We need a stub. Figure out whether a long_branch or plt_branch
7921 is needed later. */
7922 return ppc_stub_long_branch;
7923
7924 return ppc_stub_none;
7925 }
7926
7927 /* Build a .plt call stub. */
7928
7929 static inline bfd_byte *
7930 build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
7931 {
7932 #define PPC_LO(v) ((v) & 0xffff)
7933 #define PPC_HI(v) (((v) >> 16) & 0xffff)
7934 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
7935
7936 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
7937 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
7938 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7939 if (PPC_HA (offset + 8) != PPC_HA (offset))
7940 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7941 offset += 8;
7942 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
7943 if (PPC_HA (offset + 8) != PPC_HA (offset))
7944 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
7945 offset += 8;
7946 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
7947 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
7948 bfd_put_32 (obfd, BCTR, p), p += 4;
7949 return p;
7950 }
7951
7952 static bfd_boolean
7953 ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7954 {
7955 struct ppc_stub_hash_entry *stub_entry;
7956 struct ppc_branch_hash_entry *br_entry;
7957 struct bfd_link_info *info;
7958 struct ppc_link_hash_table *htab;
7959 bfd_byte *loc;
7960 bfd_byte *p;
7961 unsigned int indx;
7962 struct plt_entry *ent;
7963 bfd_vma dest, off;
7964 int size;
7965
7966 /* Massage our args to the form they really have. */
7967 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
7968 info = in_arg;
7969
7970 htab = ppc_hash_table (info);
7971
7972 /* Make a note of the offset within the stubs for this entry. */
7973 stub_entry->stub_offset = stub_entry->stub_sec->size;
7974 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
7975
7976 htab->stub_count[stub_entry->stub_type - 1] += 1;
7977 switch (stub_entry->stub_type)
7978 {
7979 case ppc_stub_long_branch:
7980 case ppc_stub_long_branch_r2off:
7981 /* Branches are relative. This is where we are going to. */
7982 off = dest = (stub_entry->target_value
7983 + stub_entry->target_section->output_offset
7984 + stub_entry->target_section->output_section->vma);
7985
7986 /* And this is where we are coming from. */
7987 off -= (stub_entry->stub_offset
7988 + stub_entry->stub_sec->output_offset
7989 + stub_entry->stub_sec->output_section->vma);
7990
7991 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
7992 size = 4;
7993 else
7994 {
7995 bfd_vma r2off;
7996
7997 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
7998 - htab->stub_group[stub_entry->id_sec->id].toc_off);
7999 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8000 loc += 4;
8001 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8002 loc += 4;
8003 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8004 loc += 4;
8005 off -= 12;
8006 size = 16;
8007 }
8008 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
8009
8010 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
8011
8012 if (info->emitrelocations)
8013 {
8014 Elf_Internal_Rela *relocs, *r;
8015 struct bfd_elf_section_data *elfsec_data;
8016
8017 elfsec_data = elf_section_data (stub_entry->stub_sec);
8018 relocs = elfsec_data->relocs;
8019 if (relocs == NULL)
8020 {
8021 bfd_size_type relsize;
8022 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8023 relocs = bfd_alloc (htab->stub_bfd, relsize);
8024 if (relocs == NULL)
8025 return FALSE;
8026 elfsec_data->relocs = relocs;
8027 elfsec_data->rel_hdr.sh_size = relsize;
8028 elfsec_data->rel_hdr.sh_entsize = 24;
8029 stub_entry->stub_sec->reloc_count = 0;
8030 }
8031 r = relocs + stub_entry->stub_sec->reloc_count;
8032 stub_entry->stub_sec->reloc_count += 1;
8033 r->r_offset = loc - stub_entry->stub_sec->contents;
8034 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8035 r->r_addend = dest;
8036 if (stub_entry->h != NULL)
8037 {
8038 struct elf_link_hash_entry **hashes;
8039 unsigned long symndx;
8040 struct ppc_link_hash_entry *h;
8041
8042 hashes = elf_sym_hashes (htab->stub_bfd);
8043 if (hashes == NULL)
8044 {
8045 bfd_size_type hsize;
8046
8047 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8048 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8049 if (hashes == NULL)
8050 return FALSE;
8051 elf_sym_hashes (htab->stub_bfd) = hashes;
8052 htab->stub_globals = 1;
8053 }
8054 symndx = htab->stub_globals++;
8055 h = stub_entry->h;
8056 hashes[symndx] = &h->elf;
8057 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8058 if (h->oh != NULL && h->oh->is_func)
8059 h = h->oh;
8060 if (h->elf.root.u.def.section != stub_entry->target_section)
8061 /* H is an opd symbol. The addend must be zero. */
8062 r->r_addend = 0;
8063 else
8064 {
8065 off = (h->elf.root.u.def.value
8066 + h->elf.root.u.def.section->output_offset
8067 + h->elf.root.u.def.section->output_section->vma);
8068 r->r_addend -= off;
8069 }
8070 }
8071 }
8072 break;
8073
8074 case ppc_stub_plt_branch:
8075 case ppc_stub_plt_branch_r2off:
8076 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8077 stub_entry->root.string + 9,
8078 FALSE, FALSE);
8079 if (br_entry == NULL)
8080 {
8081 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
8082 stub_entry->root.string + 9);
8083 htab->stub_error = TRUE;
8084 return FALSE;
8085 }
8086
8087 off = (stub_entry->target_value
8088 + stub_entry->target_section->output_offset
8089 + stub_entry->target_section->output_section->vma);
8090
8091 bfd_put_64 (htab->brlt->owner, off,
8092 htab->brlt->contents + br_entry->offset);
8093
8094 if (htab->relbrlt != NULL)
8095 {
8096 /* Create a reloc for the branch lookup table entry. */
8097 Elf_Internal_Rela rela;
8098 bfd_byte *rl;
8099
8100 rela.r_offset = (br_entry->offset
8101 + htab->brlt->output_offset
8102 + htab->brlt->output_section->vma);
8103 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8104 rela.r_addend = off;
8105
8106 rl = htab->relbrlt->contents;
8107 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8108 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8109 }
8110
8111 off = (br_entry->offset
8112 + htab->brlt->output_offset
8113 + htab->brlt->output_section->vma
8114 - elf_gp (htab->brlt->output_section->owner)
8115 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8116
8117 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8118 {
8119 (*_bfd_error_handler)
8120 (_("linkage table error against `%s'"),
8121 stub_entry->root.string);
8122 bfd_set_error (bfd_error_bad_value);
8123 htab->stub_error = TRUE;
8124 return FALSE;
8125 }
8126
8127 indx = off;
8128 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8129 {
8130 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8131 loc += 4;
8132 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8133 size = 16;
8134 }
8135 else
8136 {
8137 bfd_vma r2off;
8138
8139 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8140 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8141 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
8142 loc += 4;
8143 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
8144 loc += 4;
8145 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
8146 loc += 4;
8147 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8148 loc += 4;
8149 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
8150 size = 28;
8151 }
8152 loc += 4;
8153 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
8154 loc += 4;
8155 bfd_put_32 (htab->stub_bfd, BCTR, loc);
8156 break;
8157
8158 case ppc_stub_plt_call:
8159 /* Do the best we can for shared libraries built without
8160 exporting ".foo" for each "foo". This can happen when symbol
8161 versioning scripts strip all bar a subset of symbols. */
8162 if (stub_entry->h->oh != NULL
8163 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
8164 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
8165 {
8166 /* Point the symbol at the stub. There may be multiple stubs,
8167 we don't really care; The main thing is to make this sym
8168 defined somewhere. Maybe defining the symbol in the stub
8169 section is a silly idea. If we didn't do this, htab->top_id
8170 could disappear. */
8171 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8172 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8173 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
8174 }
8175
8176 /* Now build the stub. */
8177 off = (bfd_vma) -1;
8178 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8179 if (ent->addend == stub_entry->addend)
8180 {
8181 off = ent->plt.offset;
8182 break;
8183 }
8184 if (off >= (bfd_vma) -2)
8185 abort ();
8186
8187 off &= ~ (bfd_vma) 1;
8188 off += (htab->plt->output_offset
8189 + htab->plt->output_section->vma
8190 - elf_gp (htab->plt->output_section->owner)
8191 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8192
8193 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
8194 {
8195 (*_bfd_error_handler)
8196 (_("linkage table error against `%s'"),
8197 stub_entry->h->elf.root.root.string);
8198 bfd_set_error (bfd_error_bad_value);
8199 htab->stub_error = TRUE;
8200 return FALSE;
8201 }
8202
8203 p = build_plt_stub (htab->stub_bfd, loc, off);
8204 size = p - loc;
8205 break;
8206
8207 default:
8208 BFD_FAIL ();
8209 return FALSE;
8210 }
8211
8212 stub_entry->stub_sec->size += size;
8213
8214 if (htab->emit_stub_syms)
8215 {
8216 struct elf_link_hash_entry *h;
8217 size_t len1, len2;
8218 char *name;
8219 const char *const stub_str[] = { "long_branch",
8220 "long_branch_r2off",
8221 "plt_branch",
8222 "plt_branch_r2off",
8223 "plt_call" };
8224
8225 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8226 len2 = strlen (stub_entry->root.string);
8227 name = bfd_malloc (len1 + len2 + 2);
8228 if (name == NULL)
8229 return FALSE;
8230 memcpy (name, stub_entry->root.string, 9);
8231 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8232 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8233 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
8234 if (h == NULL)
8235 return FALSE;
8236 if (h->root.type == bfd_link_hash_new)
8237 {
8238 h->root.type = bfd_link_hash_defined;
8239 h->root.u.def.section = stub_entry->stub_sec;
8240 h->root.u.def.value = stub_entry->stub_offset;
8241 h->ref_regular = 1;
8242 h->def_regular = 1;
8243 h->ref_regular_nonweak = 1;
8244 h->forced_local = 1;
8245 h->non_elf = 0;
8246 }
8247 }
8248
8249 return TRUE;
8250 }
8251
8252 /* As above, but don't actually build the stub. Just bump offset so
8253 we know stub section sizes, and select plt_branch stubs where
8254 long_branch stubs won't do. */
8255
8256 static bfd_boolean
8257 ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8258 {
8259 struct ppc_stub_hash_entry *stub_entry;
8260 struct bfd_link_info *info;
8261 struct ppc_link_hash_table *htab;
8262 bfd_vma off;
8263 int size;
8264
8265 /* Massage our args to the form they really have. */
8266 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
8267 info = in_arg;
8268
8269 htab = ppc_hash_table (info);
8270
8271 if (stub_entry->stub_type == ppc_stub_plt_call)
8272 {
8273 struct plt_entry *ent;
8274 off = (bfd_vma) -1;
8275 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8276 if (ent->addend == stub_entry->addend)
8277 {
8278 off = ent->plt.offset & ~(bfd_vma) 1;
8279 break;
8280 }
8281 if (off >= (bfd_vma) -2)
8282 abort ();
8283 off += (htab->plt->output_offset
8284 + htab->plt->output_section->vma
8285 - elf_gp (htab->plt->output_section->owner)
8286 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8287
8288 size = PLT_CALL_STUB_SIZE;
8289 if (PPC_HA (off + 16) != PPC_HA (off))
8290 size += 4;
8291 }
8292 else
8293 {
8294 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8295 variants. */
8296 off = (stub_entry->target_value
8297 + stub_entry->target_section->output_offset
8298 + stub_entry->target_section->output_section->vma);
8299 off -= (stub_entry->stub_sec->size
8300 + stub_entry->stub_sec->output_offset
8301 + stub_entry->stub_sec->output_section->vma);
8302
8303 /* Reset the stub type from the plt variant in case we now
8304 can reach with a shorter stub. */
8305 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8306 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8307
8308 size = 4;
8309 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8310 {
8311 off -= 12;
8312 size = 16;
8313 }
8314
8315 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8316 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8317 {
8318 struct ppc_branch_hash_entry *br_entry;
8319
8320 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8321 stub_entry->root.string + 9,
8322 TRUE, FALSE);
8323 if (br_entry == NULL)
8324 {
8325 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
8326 stub_entry->root.string + 9);
8327 htab->stub_error = TRUE;
8328 return FALSE;
8329 }
8330
8331 if (br_entry->iter != htab->stub_iteration)
8332 {
8333 br_entry->iter = htab->stub_iteration;
8334 br_entry->offset = htab->brlt->size;
8335 htab->brlt->size += 8;
8336
8337 if (htab->relbrlt != NULL)
8338 htab->relbrlt->size += sizeof (Elf64_External_Rela);
8339 }
8340
8341 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
8342 size = 16;
8343 if (stub_entry->stub_type != ppc_stub_plt_branch)
8344 size = 28;
8345 }
8346
8347 if (info->emitrelocations
8348 && (stub_entry->stub_type == ppc_stub_long_branch
8349 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
8350 stub_entry->stub_sec->reloc_count += 1;
8351 }
8352
8353 stub_entry->stub_sec->size += size;
8354 return TRUE;
8355 }
8356
8357 /* Set up various things so that we can make a list of input sections
8358 for each output section included in the link. Returns -1 on error,
8359 0 when no stubs will be needed, and 1 on success. */
8360
8361 int
8362 ppc64_elf_setup_section_lists (bfd *output_bfd,
8363 struct bfd_link_info *info,
8364 int no_multi_toc)
8365 {
8366 bfd *input_bfd;
8367 int top_id, top_index, id;
8368 asection *section;
8369 asection **input_list;
8370 bfd_size_type amt;
8371 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8372
8373 htab->no_multi_toc = no_multi_toc;
8374
8375 if (htab->brlt == NULL)
8376 return 0;
8377
8378 /* Find the top input section id. */
8379 for (input_bfd = info->input_bfds, top_id = 3;
8380 input_bfd != NULL;
8381 input_bfd = input_bfd->link_next)
8382 {
8383 for (section = input_bfd->sections;
8384 section != NULL;
8385 section = section->next)
8386 {
8387 if (top_id < section->id)
8388 top_id = section->id;
8389 }
8390 }
8391
8392 htab->top_id = top_id;
8393 amt = sizeof (struct map_stub) * (top_id + 1);
8394 htab->stub_group = bfd_zmalloc (amt);
8395 if (htab->stub_group == NULL)
8396 return -1;
8397
8398 /* Set toc_off for com, und, abs and ind sections. */
8399 for (id = 0; id < 3; id++)
8400 htab->stub_group[id].toc_off = TOC_BASE_OFF;
8401
8402 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
8403
8404 /* We can't use output_bfd->section_count here to find the top output
8405 section index as some sections may have been removed, and
8406 strip_excluded_output_sections doesn't renumber the indices. */
8407 for (section = output_bfd->sections, top_index = 0;
8408 section != NULL;
8409 section = section->next)
8410 {
8411 if (top_index < section->index)
8412 top_index = section->index;
8413 }
8414
8415 htab->top_index = top_index;
8416 amt = sizeof (asection *) * (top_index + 1);
8417 input_list = bfd_zmalloc (amt);
8418 htab->input_list = input_list;
8419 if (input_list == NULL)
8420 return -1;
8421
8422 return 1;
8423 }
8424
8425 /* The linker repeatedly calls this function for each TOC input section
8426 and linker generated GOT section. Group input bfds such that the toc
8427 within a group is less than 64k in size. Will break with cute linker
8428 scripts that play games with dot in the output toc section. */
8429
8430 void
8431 ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
8432 {
8433 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8434
8435 if (!htab->no_multi_toc)
8436 {
8437 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8438 bfd_vma off = addr - htab->toc_curr;
8439
8440 if (off + isec->size > 0x10000)
8441 htab->toc_curr = addr;
8442
8443 elf_gp (isec->owner) = (htab->toc_curr
8444 - elf_gp (isec->output_section->owner)
8445 + TOC_BASE_OFF);
8446 }
8447 }
8448
8449 /* Called after the last call to the above function. */
8450
8451 void
8452 ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
8453 {
8454 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8455
8456 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8457
8458 /* toc_curr tracks the TOC offset used for code sections below in
8459 ppc64_elf_next_input_section. Start off at 0x8000. */
8460 htab->toc_curr = TOC_BASE_OFF;
8461 }
8462
8463 /* No toc references were found in ISEC. If the code in ISEC makes no
8464 calls, then there's no need to use toc adjusting stubs when branching
8465 into ISEC. Actually, indirect calls from ISEC are OK as they will
8466 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8467 needed, and 2 if a cyclical call-graph was found but no other reason
8468 for a stub was detected. If called from the top level, a return of
8469 2 means the same as a return of 0. */
8470
8471 static int
8472 toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
8473 {
8474 Elf_Internal_Rela *relstart, *rel;
8475 Elf_Internal_Sym *local_syms;
8476 int ret;
8477 struct ppc_link_hash_table *htab;
8478
8479 /* We know none of our code bearing sections will need toc stubs. */
8480 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8481 return 0;
8482
8483 if (isec->size == 0)
8484 return 0;
8485
8486 if (isec->output_section == NULL)
8487 return 0;
8488
8489 /* Hack for linux kernel. .fixup contains branches, but only back to
8490 the function that hit an exception. */
8491 if (strcmp (isec->name, ".fixup") == 0)
8492 return 0;
8493
8494 if (isec->reloc_count == 0)
8495 return 0;
8496
8497 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8498 info->keep_memory);
8499 if (relstart == NULL)
8500 return -1;
8501
8502 /* Look for branches to outside of this section. */
8503 local_syms = NULL;
8504 ret = 0;
8505 htab = ppc_hash_table (info);
8506 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
8507 {
8508 enum elf_ppc64_reloc_type r_type;
8509 unsigned long r_symndx;
8510 struct elf_link_hash_entry *h;
8511 Elf_Internal_Sym *sym;
8512 asection *sym_sec;
8513 long *opd_adjust;
8514 bfd_vma sym_value;
8515 bfd_vma dest;
8516
8517 r_type = ELF64_R_TYPE (rel->r_info);
8518 if (r_type != R_PPC64_REL24
8519 && r_type != R_PPC64_REL14
8520 && r_type != R_PPC64_REL14_BRTAKEN
8521 && r_type != R_PPC64_REL14_BRNTAKEN)
8522 continue;
8523
8524 r_symndx = ELF64_R_SYM (rel->r_info);
8525 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8526 isec->owner))
8527 {
8528 ret = -1;
8529 break;
8530 }
8531
8532 /* Calls to dynamic lib functions go through a plt call stub
8533 that uses r2. Branches to undefined symbols might be a call
8534 using old-style dot symbols that can be satisfied by a plt
8535 call into a new-style dynamic library. */
8536 if (sym_sec == NULL)
8537 {
8538 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8539 if (eh != NULL
8540 && eh->oh != NULL
8541 && eh->oh->elf.plt.plist != NULL)
8542 {
8543 ret = 1;
8544 break;
8545 }
8546
8547 /* Ignore other undefined symbols. */
8548 continue;
8549 }
8550
8551 /* Assume branches to other sections not included in the link need
8552 stubs too, to cover -R and absolute syms. */
8553 if (sym_sec->output_section == NULL)
8554 {
8555 ret = 1;
8556 break;
8557 }
8558
8559 if (h == NULL)
8560 sym_value = sym->st_value;
8561 else
8562 {
8563 if (h->root.type != bfd_link_hash_defined
8564 && h->root.type != bfd_link_hash_defweak)
8565 abort ();
8566 sym_value = h->root.u.def.value;
8567 }
8568 sym_value += rel->r_addend;
8569
8570 /* If this branch reloc uses an opd sym, find the code section. */
8571 opd_adjust = get_opd_info (sym_sec);
8572 if (opd_adjust != NULL)
8573 {
8574 if (h == NULL)
8575 {
8576 long adjust;
8577
8578 adjust = opd_adjust[sym->st_value / 8];
8579 if (adjust == -1)
8580 /* Assume deleted functions won't ever be called. */
8581 continue;
8582 sym_value += adjust;
8583 }
8584
8585 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8586 if (dest == (bfd_vma) -1)
8587 continue;
8588 }
8589 else
8590 dest = (sym_value
8591 + sym_sec->output_offset
8592 + sym_sec->output_section->vma);
8593
8594 /* Ignore branch to self. */
8595 if (sym_sec == isec)
8596 continue;
8597
8598 /* If the called function uses the toc, we need a stub. */
8599 if (sym_sec->has_toc_reloc
8600 || sym_sec->makes_toc_func_call)
8601 {
8602 ret = 1;
8603 break;
8604 }
8605
8606 /* Assume any branch that needs a long branch stub might in fact
8607 need a plt_branch stub. A plt_branch stub uses r2. */
8608 else if (dest - (isec->output_offset
8609 + isec->output_section->vma
8610 + rel->r_offset) + (1 << 25) >= (2 << 25))
8611 {
8612 ret = 1;
8613 break;
8614 }
8615
8616 /* If calling back to a section in the process of being tested, we
8617 can't say for sure that no toc adjusting stubs are needed, so
8618 don't return zero. */
8619 else if (sym_sec->call_check_in_progress)
8620 ret = 2;
8621
8622 /* Branches to another section that itself doesn't have any TOC
8623 references are OK. Recursively call ourselves to check. */
8624 else if (sym_sec->id <= htab->top_id
8625 && htab->stub_group[sym_sec->id].toc_off == 0)
8626 {
8627 int recur;
8628
8629 /* Mark current section as indeterminate, so that other
8630 sections that call back to current won't be marked as
8631 known. */
8632 isec->call_check_in_progress = 1;
8633 recur = toc_adjusting_stub_needed (info, sym_sec);
8634 isec->call_check_in_progress = 0;
8635
8636 if (recur < 0)
8637 {
8638 /* An error. Exit. */
8639 ret = -1;
8640 break;
8641 }
8642 else if (recur <= 1)
8643 {
8644 /* Known result. Mark as checked and set section flag. */
8645 htab->stub_group[sym_sec->id].toc_off = 1;
8646 if (recur != 0)
8647 {
8648 sym_sec->makes_toc_func_call = 1;
8649 ret = 1;
8650 break;
8651 }
8652 }
8653 else
8654 {
8655 /* Unknown result. Continue checking. */
8656 ret = 2;
8657 }
8658 }
8659 }
8660
8661 if (local_syms != NULL
8662 && (elf_tdata (isec->owner)->symtab_hdr.contents
8663 != (unsigned char *) local_syms))
8664 free (local_syms);
8665 if (elf_section_data (isec)->relocs != relstart)
8666 free (relstart);
8667
8668 return ret;
8669 }
8670
8671 /* The linker repeatedly calls this function for each input section,
8672 in the order that input sections are linked into output sections.
8673 Build lists of input sections to determine groupings between which
8674 we may insert linker stubs. */
8675
8676 bfd_boolean
8677 ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
8678 {
8679 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8680
8681 if ((isec->output_section->flags & SEC_CODE) != 0
8682 && isec->output_section->index <= htab->top_index)
8683 {
8684 asection **list = htab->input_list + isec->output_section->index;
8685 /* Steal the link_sec pointer for our list. */
8686 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
8687 /* This happens to make the list in reverse order,
8688 which is what we want. */
8689 PREV_SEC (isec) = *list;
8690 *list = isec;
8691 }
8692
8693 if (htab->multi_toc_needed)
8694 {
8695 /* If a code section has a function that uses the TOC then we need
8696 to use the right TOC (obviously). Also, make sure that .opd gets
8697 the correct TOC value for R_PPC64_TOC relocs that don't have or
8698 can't find their function symbol (shouldn't ever happen now). */
8699 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
8700 {
8701 if (elf_gp (isec->owner) != 0)
8702 htab->toc_curr = elf_gp (isec->owner);
8703 }
8704 else if (htab->stub_group[isec->id].toc_off == 0)
8705 {
8706 int ret = toc_adjusting_stub_needed (info, isec);
8707 if (ret < 0)
8708 return FALSE;
8709 else
8710 isec->makes_toc_func_call = ret & 1;
8711 }
8712 }
8713
8714 /* Functions that don't use the TOC can belong in any TOC group.
8715 Use the last TOC base. This happens to make _init and _fini
8716 pasting work. */
8717 htab->stub_group[isec->id].toc_off = htab->toc_curr;
8718 return TRUE;
8719 }
8720
8721 /* See whether we can group stub sections together. Grouping stub
8722 sections may result in fewer stubs. More importantly, we need to
8723 put all .init* and .fini* stubs at the beginning of the .init or
8724 .fini output sections respectively, because glibc splits the
8725 _init and _fini functions into multiple parts. Putting a stub in
8726 the middle of a function is not a good idea. */
8727
8728 static void
8729 group_sections (struct ppc_link_hash_table *htab,
8730 bfd_size_type stub_group_size,
8731 bfd_boolean stubs_always_before_branch)
8732 {
8733 asection **list = htab->input_list + htab->top_index;
8734 do
8735 {
8736 asection *tail = *list;
8737 while (tail != NULL)
8738 {
8739 asection *curr;
8740 asection *prev;
8741 bfd_size_type total;
8742 bfd_boolean big_sec;
8743 bfd_vma curr_toc;
8744
8745 curr = tail;
8746 total = tail->size;
8747 big_sec = total >= stub_group_size;
8748 curr_toc = htab->stub_group[tail->id].toc_off;
8749
8750 while ((prev = PREV_SEC (curr)) != NULL
8751 && ((total += curr->output_offset - prev->output_offset)
8752 < stub_group_size)
8753 && htab->stub_group[prev->id].toc_off == curr_toc)
8754 curr = prev;
8755
8756 /* OK, the size from the start of CURR to the end is less
8757 than stub_group_size and thus can be handled by one stub
8758 section. (or the tail section is itself larger than
8759 stub_group_size, in which case we may be toast.) We
8760 should really be keeping track of the total size of stubs
8761 added here, as stubs contribute to the final output
8762 section size. That's a little tricky, and this way will
8763 only break if stubs added make the total size more than
8764 2^25, ie. for the default stub_group_size, if stubs total
8765 more than 2097152 bytes, or nearly 75000 plt call stubs. */
8766 do
8767 {
8768 prev = PREV_SEC (tail);
8769 /* Set up this stub group. */
8770 htab->stub_group[tail->id].link_sec = curr;
8771 }
8772 while (tail != curr && (tail = prev) != NULL);
8773
8774 /* But wait, there's more! Input sections up to stub_group_size
8775 bytes before the stub section can be handled by it too.
8776 Don't do this if we have a really large section after the
8777 stubs, as adding more stubs increases the chance that
8778 branches may not reach into the stub section. */
8779 if (!stubs_always_before_branch && !big_sec)
8780 {
8781 total = 0;
8782 while (prev != NULL
8783 && ((total += tail->output_offset - prev->output_offset)
8784 < stub_group_size)
8785 && htab->stub_group[prev->id].toc_off == curr_toc)
8786 {
8787 tail = prev;
8788 prev = PREV_SEC (tail);
8789 htab->stub_group[tail->id].link_sec = curr;
8790 }
8791 }
8792 tail = prev;
8793 }
8794 }
8795 while (list-- != htab->input_list);
8796 free (htab->input_list);
8797 #undef PREV_SEC
8798 }
8799
8800 /* Determine and set the size of the stub section for a final link.
8801
8802 The basic idea here is to examine all the relocations looking for
8803 PC-relative calls to a target that is unreachable with a "bl"
8804 instruction. */
8805
8806 bfd_boolean
8807 ppc64_elf_size_stubs (bfd *output_bfd,
8808 struct bfd_link_info *info,
8809 bfd_signed_vma group_size,
8810 asection *(*add_stub_section) (const char *, asection *),
8811 void (*layout_sections_again) (void))
8812 {
8813 bfd_size_type stub_group_size;
8814 bfd_boolean stubs_always_before_branch;
8815 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8816
8817 /* Stash our params away. */
8818 htab->add_stub_section = add_stub_section;
8819 htab->layout_sections_again = layout_sections_again;
8820 stubs_always_before_branch = group_size < 0;
8821 if (group_size < 0)
8822 stub_group_size = -group_size;
8823 else
8824 stub_group_size = group_size;
8825 if (stub_group_size == 1)
8826 {
8827 /* Default values. */
8828 if (stubs_always_before_branch)
8829 {
8830 stub_group_size = 0x1e00000;
8831 if (htab->has_14bit_branch)
8832 stub_group_size = 0x7800;
8833 }
8834 else
8835 {
8836 stub_group_size = 0x1c00000;
8837 if (htab->has_14bit_branch)
8838 stub_group_size = 0x7000;
8839 }
8840 }
8841
8842 group_sections (htab, stub_group_size, stubs_always_before_branch);
8843
8844 while (1)
8845 {
8846 bfd *input_bfd;
8847 unsigned int bfd_indx;
8848 asection *stub_sec;
8849 bfd_boolean stub_changed;
8850
8851 htab->stub_iteration += 1;
8852 stub_changed = FALSE;
8853
8854 for (input_bfd = info->input_bfds, bfd_indx = 0;
8855 input_bfd != NULL;
8856 input_bfd = input_bfd->link_next, bfd_indx++)
8857 {
8858 Elf_Internal_Shdr *symtab_hdr;
8859 asection *section;
8860 Elf_Internal_Sym *local_syms = NULL;
8861
8862 /* We'll need the symbol table in a second. */
8863 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
8864 if (symtab_hdr->sh_info == 0)
8865 continue;
8866
8867 /* Walk over each section attached to the input bfd. */
8868 for (section = input_bfd->sections;
8869 section != NULL;
8870 section = section->next)
8871 {
8872 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
8873
8874 /* If there aren't any relocs, then there's nothing more
8875 to do. */
8876 if ((section->flags & SEC_RELOC) == 0
8877 || section->reloc_count == 0)
8878 continue;
8879
8880 /* If this section is a link-once section that will be
8881 discarded, then don't create any stubs. */
8882 if (section->output_section == NULL
8883 || section->output_section->owner != output_bfd)
8884 continue;
8885
8886 /* Get the relocs. */
8887 internal_relocs
8888 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
8889 info->keep_memory);
8890 if (internal_relocs == NULL)
8891 goto error_ret_free_local;
8892
8893 /* Now examine each relocation. */
8894 irela = internal_relocs;
8895 irelaend = irela + section->reloc_count;
8896 for (; irela < irelaend; irela++)
8897 {
8898 enum elf_ppc64_reloc_type r_type;
8899 unsigned int r_indx;
8900 enum ppc_stub_type stub_type;
8901 struct ppc_stub_hash_entry *stub_entry;
8902 asection *sym_sec, *code_sec;
8903 bfd_vma sym_value;
8904 bfd_vma destination;
8905 bfd_boolean ok_dest;
8906 struct ppc_link_hash_entry *hash;
8907 struct ppc_link_hash_entry *fdh;
8908 struct elf_link_hash_entry *h;
8909 Elf_Internal_Sym *sym;
8910 char *stub_name;
8911 const asection *id_sec;
8912 long *opd_adjust;
8913
8914 r_type = ELF64_R_TYPE (irela->r_info);
8915 r_indx = ELF64_R_SYM (irela->r_info);
8916
8917 if (r_type >= R_PPC64_max)
8918 {
8919 bfd_set_error (bfd_error_bad_value);
8920 goto error_ret_free_internal;
8921 }
8922
8923 /* Only look for stubs on branch instructions. */
8924 if (r_type != R_PPC64_REL24
8925 && r_type != R_PPC64_REL14
8926 && r_type != R_PPC64_REL14_BRTAKEN
8927 && r_type != R_PPC64_REL14_BRNTAKEN)
8928 continue;
8929
8930 /* Now determine the call target, its name, value,
8931 section. */
8932 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8933 r_indx, input_bfd))
8934 goto error_ret_free_internal;
8935 hash = (struct ppc_link_hash_entry *) h;
8936
8937 ok_dest = FALSE;
8938 fdh = NULL;
8939 if (hash == NULL)
8940 {
8941 sym_value = sym->st_value;
8942 ok_dest = TRUE;
8943 }
8944 else
8945 {
8946 sym_value = 0;
8947 /* Recognise an old ABI func code entry sym, and
8948 use the func descriptor sym instead. */
8949 if (hash->elf.root.root.string[0] == '.'
8950 && (fdh = get_fdh (hash, htab)) != NULL)
8951 {
8952 if (fdh->elf.root.type == bfd_link_hash_defined
8953 || fdh->elf.root.type == bfd_link_hash_defweak)
8954 {
8955 sym_sec = fdh->elf.root.u.def.section;
8956 sym_value = fdh->elf.root.u.def.value;
8957 if (sym_sec->output_section != NULL)
8958 ok_dest = TRUE;
8959 }
8960 else
8961 fdh = NULL;
8962 }
8963 else if (hash->elf.root.type == bfd_link_hash_defined
8964 || hash->elf.root.type == bfd_link_hash_defweak)
8965 {
8966 sym_value = hash->elf.root.u.def.value;
8967 if (sym_sec->output_section != NULL)
8968 ok_dest = TRUE;
8969 }
8970 else if (hash->elf.root.type == bfd_link_hash_undefweak)
8971 ;
8972 else if (hash->elf.root.type == bfd_link_hash_undefined)
8973 ;
8974 else
8975 {
8976 bfd_set_error (bfd_error_bad_value);
8977 goto error_ret_free_internal;
8978 }
8979 }
8980
8981 destination = 0;
8982 if (ok_dest)
8983 {
8984 sym_value += irela->r_addend;
8985 destination = (sym_value
8986 + sym_sec->output_offset
8987 + sym_sec->output_section->vma);
8988 }
8989
8990 code_sec = sym_sec;
8991 opd_adjust = get_opd_info (sym_sec);
8992 if (opd_adjust != NULL)
8993 {
8994 bfd_vma dest;
8995
8996 if (hash == NULL)
8997 {
8998 long adjust = opd_adjust[sym_value / 8];
8999 if (adjust == -1)
9000 continue;
9001 sym_value += adjust;
9002 }
9003 dest = opd_entry_value (sym_sec, sym_value,
9004 &code_sec, &sym_value);
9005 if (dest != (bfd_vma) -1)
9006 {
9007 destination = dest;
9008 if (fdh != NULL)
9009 {
9010 /* Fixup old ABI sym to point at code
9011 entry. */
9012 hash->elf.root.type = bfd_link_hash_defweak;
9013 hash->elf.root.u.def.section = code_sec;
9014 hash->elf.root.u.def.value = sym_value;
9015 }
9016 }
9017 }
9018
9019 /* Determine what (if any) linker stub is needed. */
9020 stub_type = ppc_type_of_stub (section, irela, &hash,
9021 destination);
9022
9023 if (stub_type != ppc_stub_plt_call)
9024 {
9025 /* Check whether we need a TOC adjusting stub.
9026 Since the linker pastes together pieces from
9027 different object files when creating the
9028 _init and _fini functions, it may be that a
9029 call to what looks like a local sym is in
9030 fact a call needing a TOC adjustment. */
9031 if (code_sec != NULL
9032 && code_sec->output_section != NULL
9033 && (htab->stub_group[code_sec->id].toc_off
9034 != htab->stub_group[section->id].toc_off)
9035 && (code_sec->has_toc_reloc
9036 || code_sec->makes_toc_func_call))
9037 stub_type = ppc_stub_long_branch_r2off;
9038 }
9039
9040 if (stub_type == ppc_stub_none)
9041 continue;
9042
9043 /* __tls_get_addr calls might be eliminated. */
9044 if (stub_type != ppc_stub_plt_call
9045 && hash != NULL
9046 && (hash == htab->tls_get_addr
9047 || hash == htab->tls_get_addr_fd)
9048 && section->has_tls_reloc
9049 && irela != internal_relocs)
9050 {
9051 /* Get tls info. */
9052 char *tls_mask;
9053
9054 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
9055 irela - 1, input_bfd))
9056 goto error_ret_free_internal;
9057 if (*tls_mask != 0)
9058 continue;
9059 }
9060
9061 /* Support for grouping stub sections. */
9062 id_sec = htab->stub_group[section->id].link_sec;
9063
9064 /* Get the name of this stub. */
9065 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9066 if (!stub_name)
9067 goto error_ret_free_internal;
9068
9069 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
9070 stub_name, FALSE, FALSE);
9071 if (stub_entry != NULL)
9072 {
9073 /* The proper stub has already been created. */
9074 free (stub_name);
9075 continue;
9076 }
9077
9078 stub_entry = ppc_add_stub (stub_name, section, htab);
9079 if (stub_entry == NULL)
9080 {
9081 free (stub_name);
9082 error_ret_free_internal:
9083 if (elf_section_data (section)->relocs == NULL)
9084 free (internal_relocs);
9085 error_ret_free_local:
9086 if (local_syms != NULL
9087 && (symtab_hdr->contents
9088 != (unsigned char *) local_syms))
9089 free (local_syms);
9090 return FALSE;
9091 }
9092
9093 stub_entry->stub_type = stub_type;
9094 stub_entry->target_value = sym_value;
9095 stub_entry->target_section = code_sec;
9096 stub_entry->h = hash;
9097 stub_entry->addend = irela->r_addend;
9098
9099 if (stub_entry->h != NULL)
9100 htab->stub_globals += 1;
9101
9102 stub_changed = TRUE;
9103 }
9104
9105 /* We're done with the internal relocs, free them. */
9106 if (elf_section_data (section)->relocs != internal_relocs)
9107 free (internal_relocs);
9108 }
9109
9110 if (local_syms != NULL
9111 && symtab_hdr->contents != (unsigned char *) local_syms)
9112 {
9113 if (!info->keep_memory)
9114 free (local_syms);
9115 else
9116 symtab_hdr->contents = (unsigned char *) local_syms;
9117 }
9118 }
9119
9120 if (!stub_changed)
9121 break;
9122
9123 /* OK, we've added some stubs. Find out the new size of the
9124 stub sections. */
9125 for (stub_sec = htab->stub_bfd->sections;
9126 stub_sec != NULL;
9127 stub_sec = stub_sec->next)
9128 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9129 {
9130 stub_sec->size = 0;
9131 stub_sec->reloc_count = 0;
9132 }
9133
9134 htab->brlt->size = 0;
9135 if (htab->relbrlt != NULL)
9136 htab->relbrlt->size = 0;
9137
9138 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
9139
9140 /* Ask the linker to do its stuff. */
9141 (*htab->layout_sections_again) ();
9142 }
9143
9144 /* It would be nice to strip htab->brlt from the output if the
9145 section is empty, but it's too late. If we strip sections here,
9146 the dynamic symbol table is corrupted since the section symbol
9147 for the stripped section isn't written. */
9148
9149 return TRUE;
9150 }
9151
9152 /* Called after we have determined section placement. If sections
9153 move, we'll be called again. Provide a value for TOCstart. */
9154
9155 bfd_vma
9156 ppc64_elf_toc (bfd *obfd)
9157 {
9158 asection *s;
9159 bfd_vma TOCstart;
9160
9161 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9162 order. The TOC starts where the first of these sections starts. */
9163 s = bfd_get_section_by_name (obfd, ".got");
9164 if (s == NULL)
9165 s = bfd_get_section_by_name (obfd, ".toc");
9166 if (s == NULL)
9167 s = bfd_get_section_by_name (obfd, ".tocbss");
9168 if (s == NULL)
9169 s = bfd_get_section_by_name (obfd, ".plt");
9170 if (s == NULL)
9171 {
9172 /* This may happen for
9173 o references to TOC base (SYM@toc / TOC[tc0]) without a
9174 .toc directive
9175 o bad linker script
9176 o --gc-sections and empty TOC sections
9177
9178 FIXME: Warn user? */
9179
9180 /* Look for a likely section. We probably won't even be
9181 using TOCstart. */
9182 for (s = obfd->sections; s != NULL; s = s->next)
9183 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9184 == (SEC_ALLOC | SEC_SMALL_DATA))
9185 break;
9186 if (s == NULL)
9187 for (s = obfd->sections; s != NULL; s = s->next)
9188 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9189 == (SEC_ALLOC | SEC_SMALL_DATA))
9190 break;
9191 if (s == NULL)
9192 for (s = obfd->sections; s != NULL; s = s->next)
9193 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9194 break;
9195 if (s == NULL)
9196 for (s = obfd->sections; s != NULL; s = s->next)
9197 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9198 break;
9199 }
9200
9201 TOCstart = 0;
9202 if (s != NULL)
9203 TOCstart = s->output_section->vma + s->output_offset;
9204
9205 return TOCstart;
9206 }
9207
9208 /* Build all the stubs associated with the current output file.
9209 The stubs are kept in a hash table attached to the main linker
9210 hash table. This function is called via gldelf64ppc_finish. */
9211
9212 bfd_boolean
9213 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9214 struct bfd_link_info *info,
9215 char **stats)
9216 {
9217 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9218 asection *stub_sec;
9219 bfd_byte *p;
9220 int stub_sec_count = 0;
9221
9222 htab->emit_stub_syms = emit_stub_syms;
9223
9224 /* Allocate memory to hold the linker stubs. */
9225 for (stub_sec = htab->stub_bfd->sections;
9226 stub_sec != NULL;
9227 stub_sec = stub_sec->next)
9228 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9229 && stub_sec->size != 0)
9230 {
9231 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9232 if (stub_sec->contents == NULL)
9233 return FALSE;
9234 /* We want to check that built size is the same as calculated
9235 size. rawsize is a convenient location to use. */
9236 stub_sec->rawsize = stub_sec->size;
9237 stub_sec->size = 0;
9238 }
9239
9240 if (htab->plt != NULL)
9241 {
9242 unsigned int indx;
9243 bfd_vma plt0;
9244
9245 /* Build the .glink plt call stub. */
9246 plt0 = (htab->plt->output_section->vma
9247 + htab->plt->output_offset
9248 - (htab->glink->output_section->vma
9249 + htab->glink->output_offset
9250 + GLINK_CALL_STUB_SIZE));
9251 if (plt0 + 0x80008000 > 0xffffffff)
9252 {
9253 (*_bfd_error_handler) (_(".glink and .plt too far apart"));
9254 bfd_set_error (bfd_error_bad_value);
9255 return FALSE;
9256 }
9257
9258 if (htab->emit_stub_syms)
9259 {
9260 struct elf_link_hash_entry *h;
9261 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9262 if (h == NULL)
9263 return FALSE;
9264 if (h->root.type == bfd_link_hash_new)
9265 {
9266 h->root.type = bfd_link_hash_defined;
9267 h->root.u.def.section = htab->glink;
9268 h->root.u.def.value = 0;
9269 h->ref_regular = 1;
9270 h->def_regular = 1;
9271 h->ref_regular_nonweak = 1;
9272 h->forced_local = 1;
9273 h->non_elf = 0;
9274 }
9275 }
9276 p = htab->glink->contents;
9277 bfd_put_32 (htab->glink->owner, MFCTR_R12, p);
9278 p += 4;
9279 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p);
9280 p += 4;
9281 bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p);
9282 p += 4;
9283 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9284 p += 4;
9285 bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p);
9286 p += 4;
9287 bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p);
9288 p += 4;
9289 bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p);
9290 p += 4;
9291 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
9292 p += 4;
9293 bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p);
9294 p += 4;
9295 bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p);
9296 p += 4;
9297 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p);
9298 p += 4;
9299 bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p);
9300 p += 4;
9301 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
9302 p += 4;
9303 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
9304 p += 4;
9305 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
9306 p += 4;
9307 bfd_put_32 (htab->glink->owner, BCTR, p);
9308 p += 4;
9309
9310 /* Build the .glink lazy link call stubs. */
9311 indx = 0;
9312 while (p < htab->glink->contents + htab->glink->size)
9313 {
9314 if (indx < 0x8000)
9315 {
9316 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9317 p += 4;
9318 }
9319 else
9320 {
9321 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9322 p += 4;
9323 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9324 p += 4;
9325 }
9326 bfd_put_32 (htab->glink->owner,
9327 B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p);
9328 indx++;
9329 p += 4;
9330 }
9331 htab->glink->rawsize = p - htab->glink->contents;
9332 }
9333
9334 if (htab->brlt->size != 0)
9335 {
9336 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
9337 htab->brlt->size);
9338 if (htab->brlt->contents == NULL)
9339 return FALSE;
9340 }
9341 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
9342 {
9343 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
9344 htab->relbrlt->size);
9345 if (htab->relbrlt->contents == NULL)
9346 return FALSE;
9347 }
9348
9349 /* Build the stubs as directed by the stub hash table. */
9350 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
9351
9352 for (stub_sec = htab->stub_bfd->sections;
9353 stub_sec != NULL;
9354 stub_sec = stub_sec->next)
9355 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9356 {
9357 stub_sec_count += 1;
9358 if (stub_sec->rawsize != stub_sec->size)
9359 break;
9360 }
9361
9362 if (stub_sec != NULL
9363 || htab->glink->rawsize != htab->glink->size)
9364 {
9365 htab->stub_error = TRUE;
9366 (*_bfd_error_handler) (_("stubs don't match calculated size"));
9367 }
9368
9369 if (htab->stub_error)
9370 return FALSE;
9371
9372 if (stats != NULL)
9373 {
9374 *stats = bfd_malloc (500);
9375 if (*stats == NULL)
9376 return FALSE;
9377
9378 sprintf (*stats, _("linker stubs in %u group%s\n"
9379 " branch %lu\n"
9380 " toc adjust %lu\n"
9381 " long branch %lu\n"
9382 " long toc adj %lu\n"
9383 " plt call %lu"),
9384 stub_sec_count,
9385 stub_sec_count == 1 ? "" : "s",
9386 htab->stub_count[ppc_stub_long_branch - 1],
9387 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9388 htab->stub_count[ppc_stub_plt_branch - 1],
9389 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9390 htab->stub_count[ppc_stub_plt_call - 1]);
9391 }
9392 return TRUE;
9393 }
9394
9395 /* This function undoes the changes made by add_symbol_adjust. */
9396
9397 static bfd_boolean
9398 undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9399 {
9400 struct ppc_link_hash_entry *eh;
9401
9402 if (h->root.type == bfd_link_hash_indirect)
9403 return TRUE;
9404
9405 if (h->root.type == bfd_link_hash_warning)
9406 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9407
9408 eh = (struct ppc_link_hash_entry *) h;
9409 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9410 return TRUE;
9411
9412 eh->elf.root.type = bfd_link_hash_undefined;
9413 return TRUE;
9414 }
9415
9416 void
9417 ppc64_elf_restore_symbols (struct bfd_link_info *info)
9418 {
9419 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9420 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9421 }
9422
9423 /* The RELOCATE_SECTION function is called by the ELF backend linker
9424 to handle the relocations for a section.
9425
9426 The relocs are always passed as Rela structures; if the section
9427 actually uses Rel structures, the r_addend field will always be
9428 zero.
9429
9430 This function is responsible for adjust the section contents as
9431 necessary, and (if using Rela relocs and generating a
9432 relocatable output file) adjusting the reloc addend as
9433 necessary.
9434
9435 This function does not have to worry about setting the reloc
9436 address or the reloc symbol index.
9437
9438 LOCAL_SYMS is a pointer to the swapped in local symbols.
9439
9440 LOCAL_SECTIONS is an array giving the section in the input file
9441 corresponding to the st_shndx field of each local symbol.
9442
9443 The global hash table entry for the global symbols can be found
9444 via elf_sym_hashes (input_bfd).
9445
9446 When generating relocatable output, this function must handle
9447 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9448 going to be the section symbol corresponding to the output
9449 section, which means that the addend must be adjusted
9450 accordingly. */
9451
9452 static bfd_boolean
9453 ppc64_elf_relocate_section (bfd *output_bfd,
9454 struct bfd_link_info *info,
9455 bfd *input_bfd,
9456 asection *input_section,
9457 bfd_byte *contents,
9458 Elf_Internal_Rela *relocs,
9459 Elf_Internal_Sym *local_syms,
9460 asection **local_sections)
9461 {
9462 struct ppc_link_hash_table *htab;
9463 Elf_Internal_Shdr *symtab_hdr;
9464 struct elf_link_hash_entry **sym_hashes;
9465 Elf_Internal_Rela *rel;
9466 Elf_Internal_Rela *relend;
9467 Elf_Internal_Rela outrel;
9468 bfd_byte *loc;
9469 struct got_entry **local_got_ents;
9470 bfd_vma TOCstart;
9471 bfd_boolean ret = TRUE;
9472 bfd_boolean is_opd;
9473 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9474 bfd_boolean is_power4 = FALSE;
9475
9476 if (info->relocatable)
9477 return TRUE;
9478
9479 /* Initialize howto table if needed. */
9480 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9481 ppc_howto_init ();
9482
9483 htab = ppc_hash_table (info);
9484
9485 /* Don't relocate stub sections. */
9486 if (input_section->owner == htab->stub_bfd)
9487 return TRUE;
9488
9489 local_got_ents = elf_local_got_ents (input_bfd);
9490 TOCstart = elf_gp (output_bfd);
9491 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9492 sym_hashes = elf_sym_hashes (input_bfd);
9493 is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL;
9494
9495 rel = relocs;
9496 relend = relocs + input_section->reloc_count;
9497 for (; rel < relend; rel++)
9498 {
9499 enum elf_ppc64_reloc_type r_type;
9500 bfd_vma addend;
9501 bfd_reloc_status_type r;
9502 Elf_Internal_Sym *sym;
9503 asection *sec;
9504 struct elf_link_hash_entry *h_elf;
9505 struct ppc_link_hash_entry *h;
9506 struct ppc_link_hash_entry *fdh;
9507 const char *sym_name;
9508 unsigned long r_symndx, toc_symndx;
9509 char tls_mask, tls_gd, tls_type;
9510 char sym_type;
9511 bfd_vma relocation;
9512 bfd_boolean unresolved_reloc;
9513 bfd_boolean warned;
9514 unsigned long insn, mask;
9515 struct ppc_stub_hash_entry *stub_entry;
9516 bfd_vma max_br_offset;
9517 bfd_vma from;
9518
9519 r_type = ELF64_R_TYPE (rel->r_info);
9520 r_symndx = ELF64_R_SYM (rel->r_info);
9521
9522 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9523 symbol of the previous ADDR64 reloc. The symbol gives us the
9524 proper TOC base to use. */
9525 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9526 && rel != relocs
9527 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9528 && is_opd)
9529 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9530
9531 sym = NULL;
9532 sec = NULL;
9533 h_elf = NULL;
9534 sym_name = NULL;
9535 unresolved_reloc = FALSE;
9536 warned = FALSE;
9537
9538 if (r_symndx < symtab_hdr->sh_info)
9539 {
9540 /* It's a local symbol. */
9541 long *opd_adjust;
9542
9543 sym = local_syms + r_symndx;
9544 sec = local_sections[r_symndx];
9545 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
9546 sym_type = ELF64_ST_TYPE (sym->st_info);
9547 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
9548 opd_adjust = get_opd_info (sec);
9549 if (opd_adjust != NULL)
9550 {
9551 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
9552 if (adjust == -1)
9553 relocation = 0;
9554 else
9555 relocation += adjust;
9556 }
9557 }
9558 else
9559 {
9560 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9561 r_symndx, symtab_hdr, sym_hashes,
9562 h_elf, sec, relocation,
9563 unresolved_reloc, warned);
9564 sym_name = h_elf->root.root.string;
9565 sym_type = h_elf->type;
9566 }
9567 h = (struct ppc_link_hash_entry *) h_elf;
9568
9569 /* TLS optimizations. Replace instruction sequences and relocs
9570 based on information we collected in tls_optimize. We edit
9571 RELOCS so that --emit-relocs will output something sensible
9572 for the final instruction stream. */
9573 tls_mask = 0;
9574 tls_gd = 0;
9575 toc_symndx = 0;
9576 if (IS_PPC64_TLS_RELOC (r_type))
9577 {
9578 if (h != NULL)
9579 tls_mask = h->tls_mask;
9580 else if (local_got_ents != NULL)
9581 {
9582 char *lgot_masks;
9583 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9584 tls_mask = lgot_masks[r_symndx];
9585 }
9586 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9587 {
9588 /* Check for toc tls entries. */
9589 char *toc_tls;
9590
9591 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9592 rel, input_bfd))
9593 return FALSE;
9594
9595 if (toc_tls)
9596 tls_mask = *toc_tls;
9597 }
9598 }
9599
9600 /* Check that tls relocs are used with tls syms, and non-tls
9601 relocs are used with non-tls syms. */
9602 if (r_symndx != 0
9603 && r_type != R_PPC64_NONE
9604 && (h == NULL
9605 || h->elf.root.type == bfd_link_hash_defined
9606 || h->elf.root.type == bfd_link_hash_defweak)
9607 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9608 {
9609 if (r_type == R_PPC64_TLS && tls_mask != 0)
9610 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9611 ;
9612 else
9613 (*_bfd_error_handler)
9614 (sym_type == STT_TLS
9615 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9616 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9617 input_bfd,
9618 input_section,
9619 (long) rel->r_offset,
9620 ppc64_elf_howto_table[r_type]->name,
9621 sym_name);
9622 }
9623
9624 /* Ensure reloc mapping code below stays sane. */
9625 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
9626 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
9627 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
9628 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
9629 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
9630 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
9631 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
9632 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
9633 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
9634 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
9635 abort ();
9636
9637 switch (r_type)
9638 {
9639 default:
9640 break;
9641
9642 case R_PPC64_TOC16:
9643 case R_PPC64_TOC16_LO:
9644 case R_PPC64_TOC16_DS:
9645 case R_PPC64_TOC16_LO_DS:
9646 {
9647 /* Check for toc tls entries. */
9648 char *toc_tls;
9649 int retval;
9650
9651 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9652 rel, input_bfd);
9653 if (retval == 0)
9654 return FALSE;
9655
9656 if (toc_tls)
9657 {
9658 tls_mask = *toc_tls;
9659 if (r_type == R_PPC64_TOC16_DS
9660 || r_type == R_PPC64_TOC16_LO_DS)
9661 {
9662 if (tls_mask != 0
9663 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
9664 goto toctprel;
9665 }
9666 else
9667 {
9668 /* If we found a GD reloc pair, then we might be
9669 doing a GD->IE transition. */
9670 if (retval == 2)
9671 {
9672 tls_gd = TLS_TPRELGD;
9673 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9674 goto tls_get_addr_check;
9675 }
9676 else if (retval == 3)
9677 {
9678 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9679 goto tls_get_addr_check;
9680 }
9681 }
9682 }
9683 }
9684 break;
9685
9686 case R_PPC64_GOT_TPREL16_DS:
9687 case R_PPC64_GOT_TPREL16_LO_DS:
9688 if (tls_mask != 0
9689 && (tls_mask & TLS_TPREL) == 0)
9690 {
9691 toctprel:
9692 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
9693 insn &= 31 << 21;
9694 insn |= 0x3c0d0000; /* addis 0,13,0 */
9695 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
9696 r_type = R_PPC64_TPREL16_HA;
9697 if (toc_symndx != 0)
9698 {
9699 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9700 /* We changed the symbol. Start over in order to
9701 get h, sym, sec etc. right. */
9702 rel--;
9703 continue;
9704 }
9705 else
9706 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9707 }
9708 break;
9709
9710 case R_PPC64_TLS:
9711 if (tls_mask != 0
9712 && (tls_mask & TLS_TPREL) == 0)
9713 {
9714 bfd_vma rtra;
9715 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
9716 if ((insn & ((0x3f << 26) | (31 << 11)))
9717 == ((31 << 26) | (13 << 11)))
9718 rtra = insn & ((1 << 26) - (1 << 16));
9719 else if ((insn & ((0x3f << 26) | (31 << 16)))
9720 == ((31 << 26) | (13 << 16)))
9721 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
9722 else
9723 abort ();
9724 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
9725 /* add -> addi. */
9726 insn = 14 << 26;
9727 else if ((insn & (31 << 1)) == 23 << 1
9728 && ((insn & (31 << 6)) < 14 << 6
9729 || ((insn & (31 << 6)) >= 16 << 6
9730 && (insn & (31 << 6)) < 24 << 6)))
9731 /* load and store indexed -> dform. */
9732 insn = (32 | ((insn >> 6) & 31)) << 26;
9733 else if ((insn & (31 << 1)) == 21 << 1
9734 && (insn & (0x1a << 6)) == 0)
9735 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
9736 insn = (((58 | ((insn >> 6) & 4)) << 26)
9737 | ((insn >> 6) & 1));
9738 else if ((insn & (31 << 1)) == 21 << 1
9739 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
9740 /* lwax -> lwa. */
9741 insn = (58 << 26) | 2;
9742 else
9743 abort ();
9744 insn |= rtra;
9745 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
9746 /* Was PPC64_TLS which sits on insn boundary, now
9747 PPC64_TPREL16_LO which is at insn+2. */
9748 rel->r_offset += 2;
9749 r_type = R_PPC64_TPREL16_LO;
9750 if (toc_symndx != 0)
9751 {
9752 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
9753 /* We changed the symbol. Start over in order to
9754 get h, sym, sec etc. right. */
9755 rel--;
9756 continue;
9757 }
9758 else
9759 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9760 }
9761 break;
9762
9763 case R_PPC64_GOT_TLSGD16_HI:
9764 case R_PPC64_GOT_TLSGD16_HA:
9765 tls_gd = TLS_TPRELGD;
9766 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9767 goto tls_gdld_hi;
9768 break;
9769
9770 case R_PPC64_GOT_TLSLD16_HI:
9771 case R_PPC64_GOT_TLSLD16_HA:
9772 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9773 {
9774 tls_gdld_hi:
9775 if ((tls_mask & tls_gd) != 0)
9776 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9777 + R_PPC64_GOT_TPREL16_DS);
9778 else
9779 {
9780 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
9781 rel->r_offset -= 2;
9782 r_type = R_PPC64_NONE;
9783 }
9784 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9785 }
9786 break;
9787
9788 case R_PPC64_GOT_TLSGD16:
9789 case R_PPC64_GOT_TLSGD16_LO:
9790 tls_gd = TLS_TPRELGD;
9791 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
9792 goto tls_get_addr_check;
9793 break;
9794
9795 case R_PPC64_GOT_TLSLD16:
9796 case R_PPC64_GOT_TLSLD16_LO:
9797 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
9798 {
9799 tls_get_addr_check:
9800 if (rel + 1 < relend)
9801 {
9802 enum elf_ppc64_reloc_type r_type2;
9803 unsigned long r_symndx2;
9804 struct elf_link_hash_entry *h2;
9805 bfd_vma insn1, insn2, insn3;
9806 bfd_vma offset;
9807
9808 /* The next instruction should be a call to
9809 __tls_get_addr. Peek at the reloc to be sure. */
9810 r_type2 = ELF64_R_TYPE (rel[1].r_info);
9811 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
9812 if (r_symndx2 < symtab_hdr->sh_info
9813 || (r_type2 != R_PPC64_REL14
9814 && r_type2 != R_PPC64_REL14_BRTAKEN
9815 && r_type2 != R_PPC64_REL14_BRNTAKEN
9816 && r_type2 != R_PPC64_REL24))
9817 break;
9818
9819 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
9820 while (h2->root.type == bfd_link_hash_indirect
9821 || h2->root.type == bfd_link_hash_warning)
9822 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
9823 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
9824 && h2 != &htab->tls_get_addr_fd->elf))
9825 break;
9826
9827 /* OK, it checks out. Replace the call. */
9828 offset = rel[1].r_offset;
9829 insn1 = bfd_get_32 (output_bfd,
9830 contents + rel->r_offset - 2);
9831 insn3 = bfd_get_32 (output_bfd,
9832 contents + offset + 4);
9833 if ((tls_mask & tls_gd) != 0)
9834 {
9835 /* IE */
9836 insn1 &= (1 << 26) - (1 << 2);
9837 insn1 |= 58 << 26; /* ld */
9838 insn2 = 0x7c636a14; /* add 3,3,13 */
9839 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
9840 if ((tls_mask & TLS_EXPLICIT) == 0)
9841 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
9842 + R_PPC64_GOT_TPREL16_DS);
9843 else
9844 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
9845 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9846 }
9847 else
9848 {
9849 /* LE */
9850 insn1 = 0x3c6d0000; /* addis 3,13,0 */
9851 insn2 = 0x38630000; /* addi 3,3,0 */
9852 if (tls_gd == 0)
9853 {
9854 /* Was an LD reloc. */
9855 r_symndx = 0;
9856 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9857 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
9858 }
9859 else if (toc_symndx != 0)
9860 r_symndx = toc_symndx;
9861 r_type = R_PPC64_TPREL16_HA;
9862 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9863 rel[1].r_info = ELF64_R_INFO (r_symndx,
9864 R_PPC64_TPREL16_LO);
9865 rel[1].r_offset += 2;
9866 }
9867 if (insn3 == NOP
9868 || insn3 == CROR_151515 || insn3 == CROR_313131)
9869 {
9870 insn3 = insn2;
9871 insn2 = NOP;
9872 rel[1].r_offset += 4;
9873 }
9874 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
9875 bfd_put_32 (output_bfd, insn2, contents + offset);
9876 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
9877 if (tls_gd == 0 || toc_symndx != 0)
9878 {
9879 /* We changed the symbol. Start over in order
9880 to get h, sym, sec etc. right. */
9881 rel--;
9882 continue;
9883 }
9884 }
9885 }
9886 break;
9887
9888 case R_PPC64_DTPMOD64:
9889 if (rel + 1 < relend
9890 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
9891 && rel[1].r_offset == rel->r_offset + 8)
9892 {
9893 if ((tls_mask & TLS_GD) == 0)
9894 {
9895 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
9896 if ((tls_mask & TLS_TPRELGD) != 0)
9897 r_type = R_PPC64_TPREL64;
9898 else
9899 {
9900 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9901 r_type = R_PPC64_NONE;
9902 }
9903 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9904 }
9905 }
9906 else
9907 {
9908 if ((tls_mask & TLS_LD) == 0)
9909 {
9910 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
9911 r_type = R_PPC64_NONE;
9912 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9913 }
9914 }
9915 break;
9916
9917 case R_PPC64_TPREL64:
9918 if ((tls_mask & TLS_TPREL) == 0)
9919 {
9920 r_type = R_PPC64_NONE;
9921 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
9922 }
9923 break;
9924 }
9925
9926 /* Handle other relocations that tweak non-addend part of insn. */
9927 insn = 0;
9928 max_br_offset = 1 << 25;
9929 addend = rel->r_addend;
9930 switch (r_type)
9931 {
9932 default:
9933 break;
9934
9935 /* Branch taken prediction relocations. */
9936 case R_PPC64_ADDR14_BRTAKEN:
9937 case R_PPC64_REL14_BRTAKEN:
9938 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
9939 /* Fall thru. */
9940
9941 /* Branch not taken prediction relocations. */
9942 case R_PPC64_ADDR14_BRNTAKEN:
9943 case R_PPC64_REL14_BRNTAKEN:
9944 insn |= bfd_get_32 (output_bfd,
9945 contents + rel->r_offset) & ~(0x01 << 21);
9946 /* Fall thru. */
9947
9948 case R_PPC64_REL14:
9949 max_br_offset = 1 << 15;
9950 /* Fall thru. */
9951
9952 case R_PPC64_REL24:
9953 /* Calls to functions with a different TOC, such as calls to
9954 shared objects, need to alter the TOC pointer. This is
9955 done using a linkage stub. A REL24 branching to these
9956 linkage stubs needs to be followed by a nop, as the nop
9957 will be replaced with an instruction to restore the TOC
9958 base pointer. */
9959 stub_entry = NULL;
9960 fdh = h;
9961 if (((h != NULL
9962 && (((fdh = h->oh) != NULL
9963 && fdh->elf.plt.plist != NULL)
9964 || (fdh = h)->elf.plt.plist != NULL))
9965 || (sec != NULL
9966 && sec->output_section != NULL
9967 && sec->id <= htab->top_id
9968 && (htab->stub_group[sec->id].toc_off
9969 != htab->stub_group[input_section->id].toc_off)))
9970 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
9971 rel, htab)) != NULL
9972 && (stub_entry->stub_type == ppc_stub_plt_call
9973 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
9974 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
9975 {
9976 bfd_boolean can_plt_call = FALSE;
9977
9978 if (rel->r_offset + 8 <= input_section->size)
9979 {
9980 unsigned long nop;
9981 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
9982 if (nop == NOP
9983 || nop == CROR_151515 || nop == CROR_313131)
9984 {
9985 bfd_put_32 (input_bfd, LD_R2_40R1,
9986 contents + rel->r_offset + 4);
9987 can_plt_call = TRUE;
9988 }
9989 }
9990
9991 if (!can_plt_call)
9992 {
9993 if (stub_entry->stub_type == ppc_stub_plt_call)
9994 {
9995 /* If this is a plain branch rather than a branch
9996 and link, don't require a nop. */
9997 unsigned long br;
9998 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
9999 if ((br & 1) == 0)
10000 can_plt_call = TRUE;
10001 else
10002 stub_entry = NULL;
10003 }
10004 else if (h != NULL
10005 && strcmp (h->elf.root.root.string,
10006 ".__libc_start_main") == 0)
10007 {
10008 /* Allow crt1 branch to go via a toc adjusting stub. */
10009 can_plt_call = TRUE;
10010 }
10011 else
10012 {
10013 if (strcmp (input_section->output_section->name,
10014 ".init") == 0
10015 || strcmp (input_section->output_section->name,
10016 ".fini") == 0)
10017 (*_bfd_error_handler)
10018 (_("%B(%A+0x%lx): automatic multiple TOCs "
10019 "not supported using your crt files; "
10020 "recompile with -mminimal-toc or upgrade gcc"),
10021 input_bfd,
10022 input_section,
10023 (long) rel->r_offset);
10024 else
10025 (*_bfd_error_handler)
10026 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10027 "does not allow automatic multiple TOCs; "
10028 "recompile with -mminimal-toc or "
10029 "-fno-optimize-sibling-calls, "
10030 "or make `%s' extern"),
10031 input_bfd,
10032 input_section,
10033 (long) rel->r_offset,
10034 sym_name,
10035 sym_name);
10036 bfd_set_error (bfd_error_bad_value);
10037 ret = FALSE;
10038 }
10039 }
10040
10041 if (can_plt_call
10042 && stub_entry->stub_type == ppc_stub_plt_call)
10043 unresolved_reloc = FALSE;
10044 }
10045
10046 if (stub_entry == NULL
10047 && get_opd_info (sec) != NULL)
10048 {
10049 /* The branch destination is the value of the opd entry. */
10050 bfd_vma off = (relocation - sec->output_section->vma
10051 - sec->output_offset + rel->r_addend);
10052 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10053 if (dest != (bfd_vma) -1)
10054 {
10055 relocation = dest;
10056 addend = 0;
10057 }
10058 }
10059
10060 /* If the branch is out of reach we ought to have a long
10061 branch stub. */
10062 from = (rel->r_offset
10063 + input_section->output_offset
10064 + input_section->output_section->vma);
10065
10066 if (stub_entry == NULL
10067 && (relocation + rel->r_addend - from + max_br_offset
10068 >= 2 * max_br_offset)
10069 && r_type != R_PPC64_ADDR14_BRTAKEN
10070 && r_type != R_PPC64_ADDR14_BRNTAKEN)
10071 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10072 htab);
10073
10074 if (stub_entry != NULL)
10075 {
10076 /* Munge up the value and addend so that we call the stub
10077 rather than the procedure directly. */
10078 relocation = (stub_entry->stub_offset
10079 + stub_entry->stub_sec->output_offset
10080 + stub_entry->stub_sec->output_section->vma);
10081 addend = 0;
10082 }
10083
10084 if (insn != 0)
10085 {
10086 if (is_power4)
10087 {
10088 /* Set 'a' bit. This is 0b00010 in BO field for branch
10089 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10090 for branch on CTR insns (BO == 1a00t or 1a01t). */
10091 if ((insn & (0x14 << 21)) == (0x04 << 21))
10092 insn |= 0x02 << 21;
10093 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10094 insn |= 0x08 << 21;
10095 else
10096 break;
10097 }
10098 else
10099 {
10100 /* Invert 'y' bit if not the default. */
10101 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
10102 insn ^= 0x01 << 21;
10103 }
10104
10105 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
10106 }
10107
10108 /* NOP out calls to undefined weak functions.
10109 We can thus call a weak function without first
10110 checking whether the function is defined. */
10111 else if (h != NULL
10112 && h->elf.root.type == bfd_link_hash_undefweak
10113 && r_type == R_PPC64_REL24
10114 && relocation == 0
10115 && rel->r_addend == 0)
10116 {
10117 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10118 continue;
10119 }
10120 break;
10121 }
10122
10123 /* Set `addend'. */
10124 tls_type = 0;
10125 switch (r_type)
10126 {
10127 default:
10128 (*_bfd_error_handler)
10129 (_("%B: unknown relocation type %d for symbol %s"),
10130 input_bfd, (int) r_type, sym_name);
10131
10132 bfd_set_error (bfd_error_bad_value);
10133 ret = FALSE;
10134 continue;
10135
10136 case R_PPC64_NONE:
10137 case R_PPC64_TLS:
10138 case R_PPC64_GNU_VTINHERIT:
10139 case R_PPC64_GNU_VTENTRY:
10140 continue;
10141
10142 /* GOT16 relocations. Like an ADDR16 using the symbol's
10143 address in the GOT as relocation value instead of the
10144 symbol's value itself. Also, create a GOT entry for the
10145 symbol and put the symbol value there. */
10146 case R_PPC64_GOT_TLSGD16:
10147 case R_PPC64_GOT_TLSGD16_LO:
10148 case R_PPC64_GOT_TLSGD16_HI:
10149 case R_PPC64_GOT_TLSGD16_HA:
10150 tls_type = TLS_TLS | TLS_GD;
10151 goto dogot;
10152
10153 case R_PPC64_GOT_TLSLD16:
10154 case R_PPC64_GOT_TLSLD16_LO:
10155 case R_PPC64_GOT_TLSLD16_HI:
10156 case R_PPC64_GOT_TLSLD16_HA:
10157 tls_type = TLS_TLS | TLS_LD;
10158 goto dogot;
10159
10160 case R_PPC64_GOT_TPREL16_DS:
10161 case R_PPC64_GOT_TPREL16_LO_DS:
10162 case R_PPC64_GOT_TPREL16_HI:
10163 case R_PPC64_GOT_TPREL16_HA:
10164 tls_type = TLS_TLS | TLS_TPREL;
10165 goto dogot;
10166
10167 case R_PPC64_GOT_DTPREL16_DS:
10168 case R_PPC64_GOT_DTPREL16_LO_DS:
10169 case R_PPC64_GOT_DTPREL16_HI:
10170 case R_PPC64_GOT_DTPREL16_HA:
10171 tls_type = TLS_TLS | TLS_DTPREL;
10172 goto dogot;
10173
10174 case R_PPC64_GOT16:
10175 case R_PPC64_GOT16_LO:
10176 case R_PPC64_GOT16_HI:
10177 case R_PPC64_GOT16_HA:
10178 case R_PPC64_GOT16_DS:
10179 case R_PPC64_GOT16_LO_DS:
10180 dogot:
10181 {
10182 /* Relocation is to the entry for this symbol in the global
10183 offset table. */
10184 asection *got;
10185 bfd_vma *offp;
10186 bfd_vma off;
10187 unsigned long indx = 0;
10188
10189 if (tls_type == (TLS_TLS | TLS_LD)
10190 && (h == NULL
10191 || !h->elf.def_dynamic))
10192 offp = &ppc64_tlsld_got (input_bfd)->offset;
10193 else
10194 {
10195 struct got_entry *ent;
10196
10197 if (h != NULL)
10198 {
10199 bfd_boolean dyn = htab->elf.dynamic_sections_created;
10200 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10201 &h->elf)
10202 || (info->shared
10203 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
10204 /* This is actually a static link, or it is a
10205 -Bsymbolic link and the symbol is defined
10206 locally, or the symbol was forced to be local
10207 because of a version file. */
10208 ;
10209 else
10210 {
10211 indx = h->elf.dynindx;
10212 unresolved_reloc = FALSE;
10213 }
10214 ent = h->elf.got.glist;
10215 }
10216 else
10217 {
10218 if (local_got_ents == NULL)
10219 abort ();
10220 ent = local_got_ents[r_symndx];
10221 }
10222
10223 for (; ent != NULL; ent = ent->next)
10224 if (ent->addend == rel->r_addend
10225 && ent->owner == input_bfd
10226 && ent->tls_type == tls_type)
10227 break;
10228 if (ent == NULL)
10229 abort ();
10230 offp = &ent->got.offset;
10231 }
10232
10233 got = ppc64_elf_tdata (input_bfd)->got;
10234 if (got == NULL)
10235 abort ();
10236
10237 /* The offset must always be a multiple of 8. We use the
10238 least significant bit to record whether we have already
10239 processed this entry. */
10240 off = *offp;
10241 if ((off & 1) != 0)
10242 off &= ~1;
10243 else
10244 {
10245 /* Generate relocs for the dynamic linker, except in
10246 the case of TLSLD where we'll use one entry per
10247 module. */
10248 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10249
10250 *offp = off | 1;
10251 if ((info->shared || indx != 0)
10252 && (h == NULL
10253 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10254 || h->elf.root.type != bfd_link_hash_undefweak))
10255 {
10256 outrel.r_offset = (got->output_section->vma
10257 + got->output_offset
10258 + off);
10259 outrel.r_addend = rel->r_addend;
10260 if (tls_type & (TLS_LD | TLS_GD))
10261 {
10262 outrel.r_addend = 0;
10263 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
10264 if (tls_type == (TLS_TLS | TLS_GD))
10265 {
10266 loc = relgot->contents;
10267 loc += (relgot->reloc_count++
10268 * sizeof (Elf64_External_Rela));
10269 bfd_elf64_swap_reloca_out (output_bfd,
10270 &outrel, loc);
10271 outrel.r_offset += 8;
10272 outrel.r_addend = rel->r_addend;
10273 outrel.r_info
10274 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10275 }
10276 }
10277 else if (tls_type == (TLS_TLS | TLS_DTPREL))
10278 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
10279 else if (tls_type == (TLS_TLS | TLS_TPREL))
10280 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10281 else if (indx == 0)
10282 {
10283 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10284
10285 /* Write the .got section contents for the sake
10286 of prelink. */
10287 loc = got->contents + off;
10288 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10289 loc);
10290 }
10291 else
10292 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
10293
10294 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
10295 {
10296 outrel.r_addend += relocation;
10297 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
10298 outrel.r_addend -= htab->elf.tls_sec->vma;
10299 }
10300 loc = relgot->contents;
10301 loc += (relgot->reloc_count++
10302 * sizeof (Elf64_External_Rela));
10303 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10304 }
10305
10306 /* Init the .got section contents here if we're not
10307 emitting a reloc. */
10308 else
10309 {
10310 relocation += rel->r_addend;
10311 if (tls_type == (TLS_TLS | TLS_LD))
10312 relocation = 1;
10313 else if (tls_type != 0)
10314 {
10315 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
10316 if (tls_type == (TLS_TLS | TLS_TPREL))
10317 relocation += DTP_OFFSET - TP_OFFSET;
10318
10319 if (tls_type == (TLS_TLS | TLS_GD))
10320 {
10321 bfd_put_64 (output_bfd, relocation,
10322 got->contents + off + 8);
10323 relocation = 1;
10324 }
10325 }
10326
10327 bfd_put_64 (output_bfd, relocation,
10328 got->contents + off);
10329 }
10330 }
10331
10332 if (off >= (bfd_vma) -2)
10333 abort ();
10334
10335 relocation = got->output_offset + off;
10336
10337 /* TOC base (r2) is TOC start plus 0x8000. */
10338 addend = -TOC_BASE_OFF;
10339 }
10340 break;
10341
10342 case R_PPC64_PLT16_HA:
10343 case R_PPC64_PLT16_HI:
10344 case R_PPC64_PLT16_LO:
10345 case R_PPC64_PLT32:
10346 case R_PPC64_PLT64:
10347 /* Relocation is to the entry for this symbol in the
10348 procedure linkage table. */
10349
10350 /* Resolve a PLT reloc against a local symbol directly,
10351 without using the procedure linkage table. */
10352 if (h == NULL)
10353 break;
10354
10355 /* It's possible that we didn't make a PLT entry for this
10356 symbol. This happens when statically linking PIC code,
10357 or when using -Bsymbolic. Go find a match if there is a
10358 PLT entry. */
10359 if (htab->plt != NULL)
10360 {
10361 struct plt_entry *ent;
10362 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
10363 if (ent->addend == rel->r_addend
10364 && ent->plt.offset != (bfd_vma) -1)
10365 {
10366 relocation = (htab->plt->output_section->vma
10367 + htab->plt->output_offset
10368 + ent->plt.offset);
10369 unresolved_reloc = FALSE;
10370 }
10371 }
10372 break;
10373
10374 case R_PPC64_TOC:
10375 /* Relocation value is TOC base. */
10376 relocation = TOCstart;
10377 if (r_symndx == 0)
10378 relocation += htab->stub_group[input_section->id].toc_off;
10379 else if (unresolved_reloc)
10380 ;
10381 else if (sec != NULL && sec->id <= htab->top_id)
10382 relocation += htab->stub_group[sec->id].toc_off;
10383 else
10384 unresolved_reloc = TRUE;
10385 goto dodyn2;
10386
10387 /* TOC16 relocs. We want the offset relative to the TOC base,
10388 which is the address of the start of the TOC plus 0x8000.
10389 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10390 in this order. */
10391 case R_PPC64_TOC16:
10392 case R_PPC64_TOC16_LO:
10393 case R_PPC64_TOC16_HI:
10394 case R_PPC64_TOC16_DS:
10395 case R_PPC64_TOC16_LO_DS:
10396 case R_PPC64_TOC16_HA:
10397 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
10398 break;
10399
10400 /* Relocate against the beginning of the section. */
10401 case R_PPC64_SECTOFF:
10402 case R_PPC64_SECTOFF_LO:
10403 case R_PPC64_SECTOFF_HI:
10404 case R_PPC64_SECTOFF_DS:
10405 case R_PPC64_SECTOFF_LO_DS:
10406 case R_PPC64_SECTOFF_HA:
10407 if (sec != NULL)
10408 addend -= sec->output_section->vma;
10409 break;
10410
10411 case R_PPC64_REL14:
10412 case R_PPC64_REL14_BRNTAKEN:
10413 case R_PPC64_REL14_BRTAKEN:
10414 case R_PPC64_REL24:
10415 break;
10416
10417 case R_PPC64_TPREL16:
10418 case R_PPC64_TPREL16_LO:
10419 case R_PPC64_TPREL16_HI:
10420 case R_PPC64_TPREL16_HA:
10421 case R_PPC64_TPREL16_DS:
10422 case R_PPC64_TPREL16_LO_DS:
10423 case R_PPC64_TPREL16_HIGHER:
10424 case R_PPC64_TPREL16_HIGHERA:
10425 case R_PPC64_TPREL16_HIGHEST:
10426 case R_PPC64_TPREL16_HIGHESTA:
10427 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10428 if (info->shared)
10429 /* The TPREL16 relocs shouldn't really be used in shared
10430 libs as they will result in DT_TEXTREL being set, but
10431 support them anyway. */
10432 goto dodyn;
10433 break;
10434
10435 case R_PPC64_DTPREL16:
10436 case R_PPC64_DTPREL16_LO:
10437 case R_PPC64_DTPREL16_HI:
10438 case R_PPC64_DTPREL16_HA:
10439 case R_PPC64_DTPREL16_DS:
10440 case R_PPC64_DTPREL16_LO_DS:
10441 case R_PPC64_DTPREL16_HIGHER:
10442 case R_PPC64_DTPREL16_HIGHERA:
10443 case R_PPC64_DTPREL16_HIGHEST:
10444 case R_PPC64_DTPREL16_HIGHESTA:
10445 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10446 break;
10447
10448 case R_PPC64_DTPMOD64:
10449 relocation = 1;
10450 addend = 0;
10451 goto dodyn;
10452
10453 case R_PPC64_TPREL64:
10454 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
10455 goto dodyn;
10456
10457 case R_PPC64_DTPREL64:
10458 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
10459 /* Fall thru */
10460
10461 /* Relocations that may need to be propagated if this is a
10462 dynamic object. */
10463 case R_PPC64_REL30:
10464 case R_PPC64_REL32:
10465 case R_PPC64_REL64:
10466 case R_PPC64_ADDR14:
10467 case R_PPC64_ADDR14_BRNTAKEN:
10468 case R_PPC64_ADDR14_BRTAKEN:
10469 case R_PPC64_ADDR16:
10470 case R_PPC64_ADDR16_DS:
10471 case R_PPC64_ADDR16_HA:
10472 case R_PPC64_ADDR16_HI:
10473 case R_PPC64_ADDR16_HIGHER:
10474 case R_PPC64_ADDR16_HIGHERA:
10475 case R_PPC64_ADDR16_HIGHEST:
10476 case R_PPC64_ADDR16_HIGHESTA:
10477 case R_PPC64_ADDR16_LO:
10478 case R_PPC64_ADDR16_LO_DS:
10479 case R_PPC64_ADDR24:
10480 case R_PPC64_ADDR32:
10481 case R_PPC64_ADDR64:
10482 case R_PPC64_UADDR16:
10483 case R_PPC64_UADDR32:
10484 case R_PPC64_UADDR64:
10485 /* r_symndx will be zero only for relocs against symbols
10486 from removed linkonce sections, or sections discarded by
10487 a linker script. */
10488 dodyn:
10489 if (r_symndx == 0)
10490 break;
10491 /* Fall thru. */
10492
10493 dodyn2:
10494 if ((input_section->flags & SEC_ALLOC) == 0)
10495 break;
10496
10497 if (NO_OPD_RELOCS && is_opd)
10498 break;
10499
10500 if ((info->shared
10501 && (h == NULL
10502 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10503 || h->elf.root.type != bfd_link_hash_undefweak)
10504 && (MUST_BE_DYN_RELOC (r_type)
10505 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
10506 || (ELIMINATE_COPY_RELOCS
10507 && !info->shared
10508 && h != NULL
10509 && h->elf.dynindx != -1
10510 && !h->elf.non_got_ref
10511 && h->elf.def_dynamic
10512 && !h->elf.def_regular))
10513 {
10514 Elf_Internal_Rela outrel;
10515 bfd_boolean skip, relocate;
10516 asection *sreloc;
10517 bfd_byte *loc;
10518 bfd_vma out_off;
10519
10520 /* When generating a dynamic object, these relocations
10521 are copied into the output file to be resolved at run
10522 time. */
10523
10524 skip = FALSE;
10525 relocate = FALSE;
10526
10527 out_off = _bfd_elf_section_offset (output_bfd, info,
10528 input_section, rel->r_offset);
10529 if (out_off == (bfd_vma) -1)
10530 skip = TRUE;
10531 else if (out_off == (bfd_vma) -2)
10532 skip = TRUE, relocate = TRUE;
10533 out_off += (input_section->output_section->vma
10534 + input_section->output_offset);
10535 outrel.r_offset = out_off;
10536 outrel.r_addend = rel->r_addend;
10537
10538 /* Optimize unaligned reloc use. */
10539 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10540 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10541 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10542 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10543 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10544 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10545 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10546 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10547 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10548
10549 if (skip)
10550 memset (&outrel, 0, sizeof outrel);
10551 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
10552 && !is_opd
10553 && r_type != R_PPC64_TOC)
10554 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
10555 else
10556 {
10557 /* This symbol is local, or marked to become local,
10558 or this is an opd section reloc which must point
10559 at a local function. */
10560 outrel.r_addend += relocation;
10561 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
10562 {
10563 if (is_opd && h != NULL)
10564 {
10565 /* Lie about opd entries. This case occurs
10566 when building shared libraries and we
10567 reference a function in another shared
10568 lib. The same thing happens for a weak
10569 definition in an application that's
10570 overridden by a strong definition in a
10571 shared lib. (I believe this is a generic
10572 bug in binutils handling of weak syms.)
10573 In these cases we won't use the opd
10574 entry in this lib. */
10575 unresolved_reloc = FALSE;
10576 }
10577 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
10578
10579 /* We need to relocate .opd contents for ld.so.
10580 Prelink also wants simple and consistent rules
10581 for relocs. This make all RELATIVE relocs have
10582 *r_offset equal to r_addend. */
10583 relocate = TRUE;
10584 }
10585 else
10586 {
10587 long indx = 0;
10588
10589 if (bfd_is_abs_section (sec))
10590 ;
10591 else if (sec == NULL || sec->owner == NULL)
10592 {
10593 bfd_set_error (bfd_error_bad_value);
10594 return FALSE;
10595 }
10596 else
10597 {
10598 asection *osec;
10599
10600 osec = sec->output_section;
10601 indx = elf_section_data (osec)->dynindx;
10602
10603 /* We are turning this relocation into one
10604 against a section symbol, so subtract out
10605 the output section's address but not the
10606 offset of the input section in the output
10607 section. */
10608 outrel.r_addend -= osec->vma;
10609 }
10610
10611 outrel.r_info = ELF64_R_INFO (indx, r_type);
10612 }
10613 }
10614
10615 sreloc = elf_section_data (input_section)->sreloc;
10616 if (sreloc == NULL)
10617 abort ();
10618
10619 loc = sreloc->contents;
10620 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
10621 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10622
10623 /* If this reloc is against an external symbol, it will
10624 be computed at runtime, so there's no need to do
10625 anything now. However, for the sake of prelink ensure
10626 that the section contents are a known value. */
10627 if (! relocate)
10628 {
10629 unresolved_reloc = FALSE;
10630 /* The value chosen here is quite arbitrary as ld.so
10631 ignores section contents except for the special
10632 case of .opd where the contents might be accessed
10633 before relocation. Choose zero, as that won't
10634 cause reloc overflow. */
10635 relocation = 0;
10636 addend = 0;
10637 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
10638 to improve backward compatibility with older
10639 versions of ld. */
10640 if (r_type == R_PPC64_ADDR64)
10641 addend = outrel.r_addend;
10642 /* Adjust pc_relative relocs to have zero in *r_offset. */
10643 else if (ppc64_elf_howto_table[r_type]->pc_relative)
10644 addend = (input_section->output_section->vma
10645 + input_section->output_offset
10646 + rel->r_offset);
10647 }
10648 }
10649 break;
10650
10651 case R_PPC64_COPY:
10652 case R_PPC64_GLOB_DAT:
10653 case R_PPC64_JMP_SLOT:
10654 case R_PPC64_RELATIVE:
10655 /* We shouldn't ever see these dynamic relocs in relocatable
10656 files. */
10657 /* Fall through. */
10658
10659 case R_PPC64_PLTGOT16:
10660 case R_PPC64_PLTGOT16_DS:
10661 case R_PPC64_PLTGOT16_HA:
10662 case R_PPC64_PLTGOT16_HI:
10663 case R_PPC64_PLTGOT16_LO:
10664 case R_PPC64_PLTGOT16_LO_DS:
10665 case R_PPC64_PLTREL32:
10666 case R_PPC64_PLTREL64:
10667 /* These ones haven't been implemented yet. */
10668
10669 (*_bfd_error_handler)
10670 (_("%B: relocation %s is not supported for symbol %s."),
10671 input_bfd,
10672 ppc64_elf_howto_table[r_type]->name, sym_name);
10673
10674 bfd_set_error (bfd_error_invalid_operation);
10675 ret = FALSE;
10676 continue;
10677 }
10678
10679 /* Do any further special processing. */
10680 switch (r_type)
10681 {
10682 default:
10683 break;
10684
10685 case R_PPC64_ADDR16_HA:
10686 case R_PPC64_ADDR16_HIGHERA:
10687 case R_PPC64_ADDR16_HIGHESTA:
10688 case R_PPC64_GOT16_HA:
10689 case R_PPC64_PLTGOT16_HA:
10690 case R_PPC64_PLT16_HA:
10691 case R_PPC64_TOC16_HA:
10692 case R_PPC64_SECTOFF_HA:
10693 case R_PPC64_TPREL16_HA:
10694 case R_PPC64_DTPREL16_HA:
10695 case R_PPC64_GOT_TLSGD16_HA:
10696 case R_PPC64_GOT_TLSLD16_HA:
10697 case R_PPC64_GOT_TPREL16_HA:
10698 case R_PPC64_GOT_DTPREL16_HA:
10699 case R_PPC64_TPREL16_HIGHER:
10700 case R_PPC64_TPREL16_HIGHERA:
10701 case R_PPC64_TPREL16_HIGHEST:
10702 case R_PPC64_TPREL16_HIGHESTA:
10703 case R_PPC64_DTPREL16_HIGHER:
10704 case R_PPC64_DTPREL16_HIGHERA:
10705 case R_PPC64_DTPREL16_HIGHEST:
10706 case R_PPC64_DTPREL16_HIGHESTA:
10707 /* It's just possible that this symbol is a weak symbol
10708 that's not actually defined anywhere. In that case,
10709 'sec' would be NULL, and we should leave the symbol
10710 alone (it will be set to zero elsewhere in the link). */
10711 if (sec != NULL)
10712 /* Add 0x10000 if sign bit in 0:15 is set.
10713 Bits 0:15 are not used. */
10714 addend += 0x8000;
10715 break;
10716
10717 case R_PPC64_ADDR16_DS:
10718 case R_PPC64_ADDR16_LO_DS:
10719 case R_PPC64_GOT16_DS:
10720 case R_PPC64_GOT16_LO_DS:
10721 case R_PPC64_PLT16_LO_DS:
10722 case R_PPC64_SECTOFF_DS:
10723 case R_PPC64_SECTOFF_LO_DS:
10724 case R_PPC64_TOC16_DS:
10725 case R_PPC64_TOC16_LO_DS:
10726 case R_PPC64_PLTGOT16_DS:
10727 case R_PPC64_PLTGOT16_LO_DS:
10728 case R_PPC64_GOT_TPREL16_DS:
10729 case R_PPC64_GOT_TPREL16_LO_DS:
10730 case R_PPC64_GOT_DTPREL16_DS:
10731 case R_PPC64_GOT_DTPREL16_LO_DS:
10732 case R_PPC64_TPREL16_DS:
10733 case R_PPC64_TPREL16_LO_DS:
10734 case R_PPC64_DTPREL16_DS:
10735 case R_PPC64_DTPREL16_LO_DS:
10736 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
10737 mask = 3;
10738 /* If this reloc is against an lq insn, then the value must be
10739 a multiple of 16. This is somewhat of a hack, but the
10740 "correct" way to do this by defining _DQ forms of all the
10741 _DS relocs bloats all reloc switches in this file. It
10742 doesn't seem to make much sense to use any of these relocs
10743 in data, so testing the insn should be safe. */
10744 if ((insn & (0x3f << 26)) == (56u << 26))
10745 mask = 15;
10746 if (((relocation + addend) & mask) != 0)
10747 {
10748 (*_bfd_error_handler)
10749 (_("%B: error: relocation %s not a multiple of %d"),
10750 input_bfd,
10751 ppc64_elf_howto_table[r_type]->name,
10752 mask + 1);
10753 bfd_set_error (bfd_error_bad_value);
10754 ret = FALSE;
10755 continue;
10756 }
10757 break;
10758 }
10759
10760 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
10761 because such sections are not SEC_ALLOC and thus ld.so will
10762 not process them. */
10763 if (unresolved_reloc
10764 && !((input_section->flags & SEC_DEBUGGING) != 0
10765 && h->elf.def_dynamic))
10766 {
10767 (*_bfd_error_handler)
10768 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
10769 input_bfd,
10770 input_section,
10771 (long) rel->r_offset,
10772 ppc64_elf_howto_table[(int) r_type]->name,
10773 h->elf.root.root.string);
10774 ret = FALSE;
10775 }
10776
10777 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
10778 input_bfd,
10779 input_section,
10780 contents,
10781 rel->r_offset,
10782 relocation,
10783 addend);
10784
10785 if (r != bfd_reloc_ok)
10786 {
10787 if (sym_name == NULL)
10788 sym_name = "(null)";
10789 if (r == bfd_reloc_overflow)
10790 {
10791 if (warned)
10792 continue;
10793 if (h != NULL
10794 && h->elf.root.type == bfd_link_hash_undefweak
10795 && ppc64_elf_howto_table[r_type]->pc_relative)
10796 {
10797 /* Assume this is a call protected by other code that
10798 detects the symbol is undefined. If this is the case,
10799 we can safely ignore the overflow. If not, the
10800 program is hosed anyway, and a little warning isn't
10801 going to help. */
10802
10803 continue;
10804 }
10805
10806 if (!((*info->callbacks->reloc_overflow)
10807 (info, (h ? &h->elf.root : NULL), sym_name,
10808 ppc64_elf_howto_table[r_type]->name,
10809 rel->r_addend, input_bfd, input_section, rel->r_offset)))
10810 return FALSE;
10811 }
10812 else
10813 {
10814 (*_bfd_error_handler)
10815 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
10816 input_bfd,
10817 input_section,
10818 (long) rel->r_offset,
10819 ppc64_elf_howto_table[r_type]->name,
10820 sym_name,
10821 (int) r);
10822 ret = FALSE;
10823 }
10824 }
10825 }
10826
10827 /* If we're emitting relocations, then shortly after this function
10828 returns, reloc offsets and addends for this section will be
10829 adjusted. Worse, reloc symbol indices will be for the output
10830 file rather than the input. Save a copy of the relocs for
10831 opd_entry_value. */
10832 if (is_opd && info->emitrelocations)
10833 {
10834 bfd_size_type amt;
10835 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
10836 rel = bfd_alloc (input_bfd, amt);
10837 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
10838 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
10839 if (rel == NULL)
10840 return FALSE;
10841 memcpy (rel, relocs, amt);
10842 }
10843 return ret;
10844 }
10845
10846 /* Adjust the value of any local symbols in opd sections. */
10847
10848 static bfd_boolean
10849 ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
10850 const char *name ATTRIBUTE_UNUSED,
10851 Elf_Internal_Sym *elfsym,
10852 asection *input_sec,
10853 struct elf_link_hash_entry *h)
10854 {
10855 long *opd_adjust, adjust;
10856 bfd_vma value;
10857
10858 if (h != NULL)
10859 return TRUE;
10860
10861 opd_adjust = get_opd_info (input_sec);
10862 if (opd_adjust == NULL)
10863 return TRUE;
10864
10865 value = elfsym->st_value - input_sec->output_offset;
10866 if (!info->relocatable)
10867 value -= input_sec->output_section->vma;
10868
10869 adjust = opd_adjust[value / 8];
10870 if (adjust == -1)
10871 elfsym->st_value = 0;
10872 else
10873 elfsym->st_value += adjust;
10874 return TRUE;
10875 }
10876
10877 /* Finish up dynamic symbol handling. We set the contents of various
10878 dynamic sections here. */
10879
10880 static bfd_boolean
10881 ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
10882 struct bfd_link_info *info,
10883 struct elf_link_hash_entry *h,
10884 Elf_Internal_Sym *sym)
10885 {
10886 struct ppc_link_hash_table *htab;
10887 bfd *dynobj;
10888 struct plt_entry *ent;
10889 Elf_Internal_Rela rela;
10890 bfd_byte *loc;
10891
10892 htab = ppc_hash_table (info);
10893 dynobj = htab->elf.dynobj;
10894
10895 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
10896 if (ent->plt.offset != (bfd_vma) -1)
10897 {
10898 /* This symbol has an entry in the procedure linkage
10899 table. Set it up. */
10900
10901 if (htab->plt == NULL
10902 || htab->relplt == NULL
10903 || htab->glink == NULL)
10904 abort ();
10905
10906 /* Create a JMP_SLOT reloc to inform the dynamic linker to
10907 fill in the PLT entry. */
10908 rela.r_offset = (htab->plt->output_section->vma
10909 + htab->plt->output_offset
10910 + ent->plt.offset);
10911 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
10912 rela.r_addend = ent->addend;
10913
10914 loc = htab->relplt->contents;
10915 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
10916 * sizeof (Elf64_External_Rela));
10917 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10918 }
10919
10920 if (h->needs_copy)
10921 {
10922 Elf_Internal_Rela rela;
10923 bfd_byte *loc;
10924
10925 /* This symbol needs a copy reloc. Set it up. */
10926
10927 if (h->dynindx == -1
10928 || (h->root.type != bfd_link_hash_defined
10929 && h->root.type != bfd_link_hash_defweak)
10930 || htab->relbss == NULL)
10931 abort ();
10932
10933 rela.r_offset = (h->root.u.def.value
10934 + h->root.u.def.section->output_section->vma
10935 + h->root.u.def.section->output_offset);
10936 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
10937 rela.r_addend = 0;
10938 loc = htab->relbss->contents;
10939 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
10940 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
10941 }
10942
10943 /* Mark some specially defined symbols as absolute. */
10944 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
10945 sym->st_shndx = SHN_ABS;
10946
10947 return TRUE;
10948 }
10949
10950 /* Used to decide how to sort relocs in an optimal manner for the
10951 dynamic linker, before writing them out. */
10952
10953 static enum elf_reloc_type_class
10954 ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
10955 {
10956 enum elf_ppc64_reloc_type r_type;
10957
10958 r_type = ELF64_R_TYPE (rela->r_info);
10959 switch (r_type)
10960 {
10961 case R_PPC64_RELATIVE:
10962 return reloc_class_relative;
10963 case R_PPC64_JMP_SLOT:
10964 return reloc_class_plt;
10965 case R_PPC64_COPY:
10966 return reloc_class_copy;
10967 default:
10968 return reloc_class_normal;
10969 }
10970 }
10971
10972 /* Finish up the dynamic sections. */
10973
10974 static bfd_boolean
10975 ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
10976 struct bfd_link_info *info)
10977 {
10978 struct ppc_link_hash_table *htab;
10979 bfd *dynobj;
10980 asection *sdyn;
10981
10982 htab = ppc_hash_table (info);
10983 dynobj = htab->elf.dynobj;
10984 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10985
10986 if (htab->elf.dynamic_sections_created)
10987 {
10988 Elf64_External_Dyn *dyncon, *dynconend;
10989
10990 if (sdyn == NULL || htab->got == NULL)
10991 abort ();
10992
10993 dyncon = (Elf64_External_Dyn *) sdyn->contents;
10994 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
10995 for (; dyncon < dynconend; dyncon++)
10996 {
10997 Elf_Internal_Dyn dyn;
10998 asection *s;
10999
11000 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11001
11002 switch (dyn.d_tag)
11003 {
11004 default:
11005 continue;
11006
11007 case DT_PPC64_GLINK:
11008 s = htab->glink;
11009 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11010 /* We stupidly defined DT_PPC64_GLINK to be the start
11011 of glink rather than the first entry point, which is
11012 what ld.so needs, and now have a bigger stub to
11013 support automatic multiple TOCs. */
11014 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
11015 break;
11016
11017 case DT_PPC64_OPD:
11018 s = bfd_get_section_by_name (output_bfd, ".opd");
11019 if (s == NULL)
11020 continue;
11021 dyn.d_un.d_ptr = s->vma;
11022 break;
11023
11024 case DT_PPC64_OPDSZ:
11025 s = bfd_get_section_by_name (output_bfd, ".opd");
11026 if (s == NULL)
11027 continue;
11028 dyn.d_un.d_val = s->size;
11029 break;
11030
11031 case DT_PLTGOT:
11032 s = htab->plt;
11033 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11034 break;
11035
11036 case DT_JMPREL:
11037 s = htab->relplt;
11038 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
11039 break;
11040
11041 case DT_PLTRELSZ:
11042 dyn.d_un.d_val = htab->relplt->size;
11043 break;
11044
11045 case DT_RELASZ:
11046 /* Don't count procedure linkage table relocs in the
11047 overall reloc count. */
11048 s = htab->relplt;
11049 if (s == NULL)
11050 continue;
11051 dyn.d_un.d_val -= s->size;
11052 break;
11053
11054 case DT_RELA:
11055 /* We may not be using the standard ELF linker script.
11056 If .rela.plt is the first .rela section, we adjust
11057 DT_RELA to not include it. */
11058 s = htab->relplt;
11059 if (s == NULL)
11060 continue;
11061 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11062 continue;
11063 dyn.d_un.d_ptr += s->size;
11064 break;
11065 }
11066
11067 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
11068 }
11069 }
11070
11071 if (htab->got != NULL && htab->got->size != 0)
11072 {
11073 /* Fill in the first entry in the global offset table.
11074 We use it to hold the link-time TOCbase. */
11075 bfd_put_64 (output_bfd,
11076 elf_gp (output_bfd) + TOC_BASE_OFF,
11077 htab->got->contents);
11078
11079 /* Set .got entry size. */
11080 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
11081 }
11082
11083 if (htab->plt != NULL && htab->plt->size != 0)
11084 {
11085 /* Set .plt entry size. */
11086 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
11087 = PLT_ENTRY_SIZE;
11088 }
11089
11090 /* We need to handle writing out multiple GOT sections ourselves,
11091 since we didn't add them to DYNOBJ. We know dynobj is the first
11092 bfd. */
11093 while ((dynobj = dynobj->link_next) != NULL)
11094 {
11095 asection *s;
11096
11097 if (!is_ppc64_elf_target (dynobj->xvec))
11098 continue;
11099
11100 s = ppc64_elf_tdata (dynobj)->got;
11101 if (s != NULL
11102 && s->size != 0
11103 && s->output_section != bfd_abs_section_ptr
11104 && !bfd_set_section_contents (output_bfd, s->output_section,
11105 s->contents, s->output_offset,
11106 s->size))
11107 return FALSE;
11108 s = ppc64_elf_tdata (dynobj)->relgot;
11109 if (s != NULL
11110 && s->size != 0
11111 && s->output_section != bfd_abs_section_ptr
11112 && !bfd_set_section_contents (output_bfd, s->output_section,
11113 s->contents, s->output_offset,
11114 s->size))
11115 return FALSE;
11116 }
11117
11118 return TRUE;
11119 }
11120
11121 #include "elf64-target.h"
GDB Binutils - Deliverables
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