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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
84f5d08e 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
AM
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC
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.
5bd4f169 14
ae9a127f
NC
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.
5bd4f169 19
4ce794b7
AM
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.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
4ce794b7
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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 */
5bd4f169 27
183e98be 28#include <stdarg.h>
5bd4f169
AM
29#include "bfd.h"
30#include "sysdep.h"
31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
04c9666a 34#include "elf/ppc64.h"
5d1634d7 35#include "elf64-ppc.h"
5bd4f169 36
805fc799 37static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 38 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
39static bfd_reloc_status_type ppc64_elf_branch_reloc
40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 41static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 43static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 45static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 47static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 49static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 51static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 53static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
55static bfd_vma opd_entry_value
56 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 57
ad8e1ba5
AM
58#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
59#define TARGET_LITTLE_NAME "elf64-powerpcle"
60#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
61#define TARGET_BIG_NAME "elf64-powerpc"
62#define ELF_ARCH bfd_arch_powerpc
63#define ELF_MACHINE_CODE EM_PPC64
64#define ELF_MAXPAGESIZE 0x10000
24718e3b 65#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM
66#define elf_info_to_howto ppc64_elf_info_to_howto
67
68#define elf_backend_want_got_sym 0
69#define elf_backend_want_plt_sym 0
70#define elf_backend_plt_alignment 3
71#define elf_backend_plt_not_loaded 1
ad8e1ba5 72#define elf_backend_got_header_size 8
ad8e1ba5
AM
73#define elf_backend_can_gc_sections 1
74#define elf_backend_can_refcount 1
75#define elf_backend_rela_normal 1
6bfdb61b 76#define elf_backend_default_execstack 0
ad8e1ba5 77
e717da7e 78#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 79#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
157090f7 80#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM
81#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
82#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
83#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
84#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 85#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
ad8e1ba5
AM
86
87#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM
88#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
89#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 90#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM
91#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
92#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 93#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d 94#define elf_backend_check_directives ppc64_elf_check_directives
97fed1c9 95#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 96#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 97#define elf_backend_check_relocs ppc64_elf_check_relocs
64d03ab5 98#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM
99#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
100#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
101#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
102#define elf_backend_hide_symbol ppc64_elf_hide_symbol
103#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
104#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 105#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 106#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM
107#define elf_backend_relocate_section ppc64_elf_relocate_section
108#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
109#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
110#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 111#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 112#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 113
5bd4f169
AM
114/* The name of the dynamic interpreter. This is put in the .interp
115 section. */
116#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
117
118/* The size in bytes of an entry in the procedure linkage table. */
119#define PLT_ENTRY_SIZE 24
120
121/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 122#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
AM
123
124/* TOC base pointers offset from start of TOC. */
411e1bfb
AM
125#define TOC_BASE_OFF 0x8000
126
127/* Offset of tp and dtp pointers from start of TLS block. */
128#define TP_OFFSET 0x7000
129#define DTP_OFFSET 0x8000
5bd4f169 130
ad8e1ba5
AM
131/* .plt call stub instructions. The normal stub is like this, but
132 sometimes the .plt entry crosses a 64k boundary and we need to
133 insert an addis to adjust r12. */
134#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM
135#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
136#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
137#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
138#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
139#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
140 /* ld %r11,xxx+16@l(%r12) */
141#define BCTR 0x4e800420 /* bctr */
142
5d1634d7 143
ee4bf8d2 144#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ad8e1ba5
AM
145#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
146#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
147
148#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
149
ee4bf8d2 150/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 151#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM
152 /* 0: */
153 /* .quad plt0-1f */
154 /* __glink: */
155#define MFLR_R12 0x7d8802a6 /* mflr %12 */
156#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
157 /* 1: */
158#define MFLR_R11 0x7d6802a6 /* mflr %11 */
159#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
160#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
161#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
162 /* ld %11,0(%12) */
163 /* ld %2,8(%12) */
164 /* mtctr %11 */
165 /* ld %11,16(%12) */
166 /* bctr */
5d1634d7
AM
167
168/* Pad with this. */
169#define NOP 0x60000000
170
721956f4
AM
171/* Some other nops. */
172#define CROR_151515 0x4def7b82
173#define CROR_313131 0x4ffffb82
174
cedb70c5 175/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM
176#define LI_R0_0 0x38000000 /* li %r0,0 */
177#define B_DOT 0x48000000 /* b . */
178
179/* After that, we need two instructions to load the index, followed by
180 a branch. */
181#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 182#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 183
deb0e272
AM
184/* Instructions used by the save and restore reg functions. */
185#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
186#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
187#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
188#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM
189#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
190#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM
191#define LI_R12_0 0x39800000 /* li %r12,0 */
192#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
193#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
194#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM
195#define BLR 0x4e800020 /* blr */
196
41bd81ab
AM
197/* Since .opd is an array of descriptors and each entry will end up
198 with identical R_PPC64_RELATIVE relocs, there is really no need to
199 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 200 relocate .opd without reloc entries. */
41bd81ab
AM
201#ifndef NO_OPD_RELOCS
202#define NO_OPD_RELOCS 0
203#endif
5bd4f169 204\f
f5e87a1d 205#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 206
5bd4f169 207/* Relocation HOWTO's. */
04c9666a 208static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM
209
210static reloc_howto_type ppc64_elf_howto_raw[] = {
211 /* This reloc does nothing. */
212 HOWTO (R_PPC64_NONE, /* type */
213 0, /* rightshift */
411e1bfb
AM
214 2, /* size (0 = byte, 1 = short, 2 = long) */
215 32, /* bitsize */
b34976b6 216 FALSE, /* pc_relative */
5bd4f169 217 0, /* bitpos */
f5e87a1d 218 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM
219 bfd_elf_generic_reloc, /* special_function */
220 "R_PPC64_NONE", /* name */
b34976b6 221 FALSE, /* partial_inplace */
d006db6c 222 0, /* src_mask */
5bd4f169 223 0, /* dst_mask */
b34976b6 224 FALSE), /* pcrel_offset */
5bd4f169
AM
225
226 /* A standard 32 bit relocation. */
227 HOWTO (R_PPC64_ADDR32, /* type */
228 0, /* rightshift */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
230 32, /* bitsize */
b34976b6 231 FALSE, /* pc_relative */
5bd4f169
AM
232 0, /* bitpos */
233 complain_overflow_bitfield, /* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_PPC64_ADDR32", /* name */
b34976b6 236 FALSE, /* partial_inplace */
5bd4f169
AM
237 0, /* src_mask */
238 0xffffffff, /* dst_mask */
b34976b6 239 FALSE), /* pcrel_offset */
5bd4f169
AM
240
241 /* An absolute 26 bit branch; the lower two bits must be zero.
242 FIXME: we don't check that, we just clear them. */
243 HOWTO (R_PPC64_ADDR24, /* type */
244 0, /* rightshift */
245 2, /* size (0 = byte, 1 = short, 2 = long) */
246 26, /* bitsize */
b34976b6 247 FALSE, /* pc_relative */
5bd4f169
AM
248 0, /* bitpos */
249 complain_overflow_bitfield, /* complain_on_overflow */
250 bfd_elf_generic_reloc, /* special_function */
251 "R_PPC64_ADDR24", /* name */
b34976b6 252 FALSE, /* partial_inplace */
d006db6c 253 0, /* src_mask */
f5e87a1d 254 0x03fffffc, /* dst_mask */
b34976b6 255 FALSE), /* pcrel_offset */
5bd4f169
AM
256
257 /* A standard 16 bit relocation. */
258 HOWTO (R_PPC64_ADDR16, /* type */
259 0, /* rightshift */
260 1, /* size (0 = byte, 1 = short, 2 = long) */
261 16, /* bitsize */
b34976b6 262 FALSE, /* pc_relative */
5bd4f169
AM
263 0, /* bitpos */
264 complain_overflow_bitfield, /* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_PPC64_ADDR16", /* name */
b34976b6 267 FALSE, /* partial_inplace */
5bd4f169
AM
268 0, /* src_mask */
269 0xffff, /* dst_mask */
b34976b6 270 FALSE), /* pcrel_offset */
5bd4f169
AM
271
272 /* A 16 bit relocation without overflow. */
273 HOWTO (R_PPC64_ADDR16_LO, /* type */
274 0, /* rightshift */
275 1, /* size (0 = byte, 1 = short, 2 = long) */
276 16, /* bitsize */
b34976b6 277 FALSE, /* pc_relative */
5bd4f169
AM
278 0, /* bitpos */
279 complain_overflow_dont,/* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC64_ADDR16_LO", /* name */
b34976b6 282 FALSE, /* partial_inplace */
5bd4f169
AM
283 0, /* src_mask */
284 0xffff, /* dst_mask */
b34976b6 285 FALSE), /* pcrel_offset */
5bd4f169
AM
286
287 /* Bits 16-31 of an address. */
288 HOWTO (R_PPC64_ADDR16_HI, /* type */
289 16, /* rightshift */
290 1, /* size (0 = byte, 1 = short, 2 = long) */
291 16, /* bitsize */
b34976b6 292 FALSE, /* pc_relative */
5bd4f169
AM
293 0, /* bitpos */
294 complain_overflow_dont, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC64_ADDR16_HI", /* name */
b34976b6 297 FALSE, /* partial_inplace */
5bd4f169
AM
298 0, /* src_mask */
299 0xffff, /* dst_mask */
b34976b6 300 FALSE), /* pcrel_offset */
5bd4f169
AM
301
302 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
303 bits, treated as a signed number, is negative. */
304 HOWTO (R_PPC64_ADDR16_HA, /* type */
305 16, /* rightshift */
306 1, /* size (0 = byte, 1 = short, 2 = long) */
307 16, /* bitsize */
b34976b6 308 FALSE, /* pc_relative */
5bd4f169
AM
309 0, /* bitpos */
310 complain_overflow_dont, /* complain_on_overflow */
805fc799 311 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 312 "R_PPC64_ADDR16_HA", /* name */
b34976b6 313 FALSE, /* partial_inplace */
5bd4f169
AM
314 0, /* src_mask */
315 0xffff, /* dst_mask */
b34976b6 316 FALSE), /* pcrel_offset */
5bd4f169
AM
317
318 /* An absolute 16 bit branch; the lower two bits must be zero.
319 FIXME: we don't check that, we just clear them. */
320 HOWTO (R_PPC64_ADDR14, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
b34976b6 324 FALSE, /* pc_relative */
5bd4f169
AM
325 0, /* bitpos */
326 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 327 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 328 "R_PPC64_ADDR14", /* name */
b34976b6 329 FALSE, /* partial_inplace */
d006db6c 330 0, /* src_mask */
f5e87a1d 331 0x0000fffc, /* dst_mask */
b34976b6 332 FALSE), /* pcrel_offset */
5bd4f169
AM
333
334 /* An absolute 16 bit branch, for which bit 10 should be set to
335 indicate that the branch is expected to be taken. The lower two
336 bits must be zero. */
337 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 16, /* bitsize */
b34976b6 341 FALSE, /* pc_relative */
5bd4f169
AM
342 0, /* bitpos */
343 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 344 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 345 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 346 FALSE, /* partial_inplace */
d006db6c 347 0, /* src_mask */
f5e87a1d 348 0x0000fffc, /* dst_mask */
b34976b6 349 FALSE), /* pcrel_offset */
5bd4f169
AM
350
351 /* An absolute 16 bit branch, for which bit 10 should be set to
352 indicate that the branch is not expected to be taken. The lower
353 two bits must be zero. */
354 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
355 0, /* rightshift */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
357 16, /* bitsize */
b34976b6 358 FALSE, /* pc_relative */
5bd4f169
AM
359 0, /* bitpos */
360 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 361 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 362 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 363 FALSE, /* partial_inplace */
d006db6c 364 0, /* src_mask */
f5e87a1d 365 0x0000fffc, /* dst_mask */
b34976b6 366 FALSE), /* pcrel_offset */
5bd4f169
AM
367
368 /* A relative 26 bit branch; the lower two bits must be zero. */
369 HOWTO (R_PPC64_REL24, /* type */
370 0, /* rightshift */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
372 26, /* bitsize */
b34976b6 373 TRUE, /* pc_relative */
5bd4f169
AM
374 0, /* bitpos */
375 complain_overflow_signed, /* complain_on_overflow */
2441e016 376 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 377 "R_PPC64_REL24", /* name */
b34976b6 378 FALSE, /* partial_inplace */
d006db6c 379 0, /* src_mask */
f5e87a1d 380 0x03fffffc, /* dst_mask */
b34976b6 381 TRUE), /* pcrel_offset */
5bd4f169
AM
382
383 /* A relative 16 bit branch; the lower two bits must be zero. */
384 HOWTO (R_PPC64_REL14, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
b34976b6 388 TRUE, /* pc_relative */
5bd4f169
AM
389 0, /* bitpos */
390 complain_overflow_signed, /* complain_on_overflow */
2441e016 391 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 392 "R_PPC64_REL14", /* name */
b34976b6 393 FALSE, /* partial_inplace */
d006db6c 394 0, /* src_mask */
f5e87a1d 395 0x0000fffc, /* dst_mask */
b34976b6 396 TRUE), /* pcrel_offset */
5bd4f169
AM
397
398 /* A relative 16 bit branch. Bit 10 should be set to indicate that
399 the branch is expected to be taken. The lower two bits must be
400 zero. */
401 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
b34976b6 405 TRUE, /* pc_relative */
5bd4f169
AM
406 0, /* bitpos */
407 complain_overflow_signed, /* complain_on_overflow */
805fc799 408 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 409 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 410 FALSE, /* partial_inplace */
d006db6c 411 0, /* src_mask */
f5e87a1d 412 0x0000fffc, /* dst_mask */
b34976b6 413 TRUE), /* pcrel_offset */
5bd4f169
AM
414
415 /* A relative 16 bit branch. Bit 10 should be set to indicate that
416 the branch is not expected to be taken. The lower two bits must
417 be zero. */
418 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
419 0, /* rightshift */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
421 16, /* bitsize */
b34976b6 422 TRUE, /* pc_relative */
5bd4f169
AM
423 0, /* bitpos */
424 complain_overflow_signed, /* complain_on_overflow */
805fc799 425 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 426 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 427 FALSE, /* partial_inplace */
d006db6c 428 0, /* src_mask */
f5e87a1d 429 0x0000fffc, /* dst_mask */
b34976b6 430 TRUE), /* pcrel_offset */
5bd4f169
AM
431
432 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
433 symbol. */
434 HOWTO (R_PPC64_GOT16, /* type */
435 0, /* rightshift */
436 1, /* size (0 = byte, 1 = short, 2 = long) */
437 16, /* bitsize */
b34976b6 438 FALSE, /* pc_relative */
5bd4f169
AM
439 0, /* bitpos */
440 complain_overflow_signed, /* complain_on_overflow */
805fc799 441 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 442 "R_PPC64_GOT16", /* name */
b34976b6 443 FALSE, /* partial_inplace */
5bd4f169
AM
444 0, /* src_mask */
445 0xffff, /* dst_mask */
b34976b6 446 FALSE), /* pcrel_offset */
5bd4f169
AM
447
448 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
449 the symbol. */
450 HOWTO (R_PPC64_GOT16_LO, /* type */
451 0, /* rightshift */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
453 16, /* bitsize */
b34976b6 454 FALSE, /* pc_relative */
5bd4f169
AM
455 0, /* bitpos */
456 complain_overflow_dont, /* complain_on_overflow */
805fc799 457 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 458 "R_PPC64_GOT16_LO", /* name */
b34976b6 459 FALSE, /* partial_inplace */
5bd4f169
AM
460 0, /* src_mask */
461 0xffff, /* dst_mask */
b34976b6 462 FALSE), /* pcrel_offset */
5bd4f169
AM
463
464 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
465 the symbol. */
466 HOWTO (R_PPC64_GOT16_HI, /* type */
467 16, /* rightshift */
468 1, /* size (0 = byte, 1 = short, 2 = long) */
469 16, /* bitsize */
b34976b6 470 FALSE, /* pc_relative */
5bd4f169
AM
471 0, /* bitpos */
472 complain_overflow_dont,/* complain_on_overflow */
805fc799 473 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 474 "R_PPC64_GOT16_HI", /* name */
b34976b6 475 FALSE, /* partial_inplace */
5bd4f169
AM
476 0, /* src_mask */
477 0xffff, /* dst_mask */
b34976b6 478 FALSE), /* pcrel_offset */
5bd4f169
AM
479
480 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
481 the symbol. */
482 HOWTO (R_PPC64_GOT16_HA, /* type */
483 16, /* rightshift */
484 1, /* size (0 = byte, 1 = short, 2 = long) */
485 16, /* bitsize */
b34976b6 486 FALSE, /* pc_relative */
5bd4f169
AM
487 0, /* bitpos */
488 complain_overflow_dont,/* complain_on_overflow */
805fc799 489 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 490 "R_PPC64_GOT16_HA", /* name */
b34976b6 491 FALSE, /* partial_inplace */
5bd4f169
AM
492 0, /* src_mask */
493 0xffff, /* dst_mask */
b34976b6 494 FALSE), /* pcrel_offset */
5bd4f169
AM
495
496 /* This is used only by the dynamic linker. The symbol should exist
497 both in the object being run and in some shared library. The
498 dynamic linker copies the data addressed by the symbol from the
499 shared library into the object, because the object being
500 run has to have the data at some particular address. */
501 HOWTO (R_PPC64_COPY, /* type */
502 0, /* rightshift */
f5e87a1d
AM
503 0, /* this one is variable size */
504 0, /* bitsize */
b34976b6 505 FALSE, /* pc_relative */
5bd4f169 506 0, /* bitpos */
f5e87a1d
AM
507 complain_overflow_dont, /* complain_on_overflow */
508 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 509 "R_PPC64_COPY", /* name */
b34976b6 510 FALSE, /* partial_inplace */
5bd4f169
AM
511 0, /* src_mask */
512 0, /* dst_mask */
b34976b6 513 FALSE), /* pcrel_offset */
5bd4f169
AM
514
515 /* Like R_PPC64_ADDR64, but used when setting global offset table
516 entries. */
517 HOWTO (R_PPC64_GLOB_DAT, /* type */
518 0, /* rightshift */
519 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
520 64, /* bitsize */
b34976b6 521 FALSE, /* pc_relative */
5bd4f169
AM
522 0, /* bitpos */
523 complain_overflow_dont, /* complain_on_overflow */
805fc799 524 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 525 "R_PPC64_GLOB_DAT", /* name */
b34976b6 526 FALSE, /* partial_inplace */
5bd4f169 527 0, /* src_mask */
f5e87a1d 528 ONES (64), /* dst_mask */
b34976b6 529 FALSE), /* pcrel_offset */
5bd4f169
AM
530
531 /* Created by the link editor. Marks a procedure linkage table
532 entry for a symbol. */
533 HOWTO (R_PPC64_JMP_SLOT, /* type */
534 0, /* rightshift */
535 0, /* size (0 = byte, 1 = short, 2 = long) */
536 0, /* bitsize */
b34976b6 537 FALSE, /* pc_relative */
5bd4f169
AM
538 0, /* bitpos */
539 complain_overflow_dont, /* complain_on_overflow */
805fc799 540 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 541 "R_PPC64_JMP_SLOT", /* name */
b34976b6 542 FALSE, /* partial_inplace */
5bd4f169
AM
543 0, /* src_mask */
544 0, /* dst_mask */
b34976b6 545 FALSE), /* pcrel_offset */
5bd4f169
AM
546
547 /* Used only by the dynamic linker. When the object is run, this
548 doubleword64 is set to the load address of the object, plus the
549 addend. */
550 HOWTO (R_PPC64_RELATIVE, /* type */
551 0, /* rightshift */
552 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
553 64, /* bitsize */
b34976b6 554 FALSE, /* pc_relative */
5bd4f169
AM
555 0, /* bitpos */
556 complain_overflow_dont, /* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
558 "R_PPC64_RELATIVE", /* name */
b34976b6 559 FALSE, /* partial_inplace */
5bd4f169 560 0, /* src_mask */
f5e87a1d 561 ONES (64), /* dst_mask */
b34976b6 562 FALSE), /* pcrel_offset */
5bd4f169
AM
563
564 /* Like R_PPC64_ADDR32, but may be unaligned. */
565 HOWTO (R_PPC64_UADDR32, /* type */
566 0, /* rightshift */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
568 32, /* bitsize */
b34976b6 569 FALSE, /* pc_relative */
5bd4f169
AM
570 0, /* bitpos */
571 complain_overflow_bitfield, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
573 "R_PPC64_UADDR32", /* name */
b34976b6 574 FALSE, /* partial_inplace */
5bd4f169
AM
575 0, /* src_mask */
576 0xffffffff, /* dst_mask */
b34976b6 577 FALSE), /* pcrel_offset */
5bd4f169
AM
578
579 /* Like R_PPC64_ADDR16, but may be unaligned. */
580 HOWTO (R_PPC64_UADDR16, /* type */
581 0, /* rightshift */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
583 16, /* bitsize */
b34976b6 584 FALSE, /* pc_relative */
5bd4f169
AM
585 0, /* bitpos */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC64_UADDR16", /* name */
b34976b6 589 FALSE, /* partial_inplace */
5bd4f169
AM
590 0, /* src_mask */
591 0xffff, /* dst_mask */
b34976b6 592 FALSE), /* pcrel_offset */
5bd4f169
AM
593
594 /* 32-bit PC relative. */
595 HOWTO (R_PPC64_REL32, /* type */
596 0, /* rightshift */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
598 32, /* bitsize */
b34976b6 599 TRUE, /* pc_relative */
5bd4f169 600 0, /* bitpos */
cedb70c5 601 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM
602 complain_overflow_signed, /* complain_on_overflow */
603 bfd_elf_generic_reloc, /* special_function */
604 "R_PPC64_REL32", /* name */
b34976b6 605 FALSE, /* partial_inplace */
5bd4f169
AM
606 0, /* src_mask */
607 0xffffffff, /* dst_mask */
b34976b6 608 TRUE), /* pcrel_offset */
5bd4f169 609
10ed1bba 610 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
611 HOWTO (R_PPC64_PLT32, /* type */
612 0, /* rightshift */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
614 32, /* bitsize */
b34976b6 615 FALSE, /* pc_relative */
5bd4f169
AM
616 0, /* bitpos */
617 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 618 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 619 "R_PPC64_PLT32", /* name */
b34976b6 620 FALSE, /* partial_inplace */
5bd4f169 621 0, /* src_mask */
f5e87a1d 622 0xffffffff, /* dst_mask */
b34976b6 623 FALSE), /* pcrel_offset */
5bd4f169
AM
624
625 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
626 FIXME: R_PPC64_PLTREL32 not supported. */
627 HOWTO (R_PPC64_PLTREL32, /* type */
628 0, /* rightshift */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
630 32, /* bitsize */
b34976b6 631 TRUE, /* pc_relative */
5bd4f169
AM
632 0, /* bitpos */
633 complain_overflow_signed, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_PLTREL32", /* name */
b34976b6 636 FALSE, /* partial_inplace */
5bd4f169 637 0, /* src_mask */
f5e87a1d 638 0xffffffff, /* dst_mask */
b34976b6 639 TRUE), /* pcrel_offset */
5bd4f169
AM
640
641 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
642 the symbol. */
643 HOWTO (R_PPC64_PLT16_LO, /* type */
644 0, /* rightshift */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
646 16, /* bitsize */
b34976b6 647 FALSE, /* pc_relative */
5bd4f169
AM
648 0, /* bitpos */
649 complain_overflow_dont, /* complain_on_overflow */
805fc799 650 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 651 "R_PPC64_PLT16_LO", /* name */
b34976b6 652 FALSE, /* partial_inplace */
5bd4f169
AM
653 0, /* src_mask */
654 0xffff, /* dst_mask */
b34976b6 655 FALSE), /* pcrel_offset */
5bd4f169
AM
656
657 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
658 the symbol. */
659 HOWTO (R_PPC64_PLT16_HI, /* type */
660 16, /* rightshift */
661 1, /* size (0 = byte, 1 = short, 2 = long) */
662 16, /* bitsize */
b34976b6 663 FALSE, /* pc_relative */
5bd4f169
AM
664 0, /* bitpos */
665 complain_overflow_dont, /* complain_on_overflow */
805fc799 666 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 667 "R_PPC64_PLT16_HI", /* name */
b34976b6 668 FALSE, /* partial_inplace */
5bd4f169
AM
669 0, /* src_mask */
670 0xffff, /* dst_mask */
b34976b6 671 FALSE), /* pcrel_offset */
5bd4f169
AM
672
673 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
674 the symbol. */
675 HOWTO (R_PPC64_PLT16_HA, /* type */
676 16, /* rightshift */
677 1, /* size (0 = byte, 1 = short, 2 = long) */
678 16, /* bitsize */
b34976b6 679 FALSE, /* pc_relative */
5bd4f169
AM
680 0, /* bitpos */
681 complain_overflow_dont, /* complain_on_overflow */
805fc799 682 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 683 "R_PPC64_PLT16_HA", /* name */
b34976b6 684 FALSE, /* partial_inplace */
5bd4f169
AM
685 0, /* src_mask */
686 0xffff, /* dst_mask */
b34976b6 687 FALSE), /* pcrel_offset */
5bd4f169 688
c061c2d8 689 /* 16-bit section relative relocation. */
5bd4f169
AM
690 HOWTO (R_PPC64_SECTOFF, /* type */
691 0, /* rightshift */
c061c2d8
AM
692 1, /* size (0 = byte, 1 = short, 2 = long) */
693 16, /* bitsize */
b34976b6 694 FALSE, /* pc_relative */
5bd4f169
AM
695 0, /* bitpos */
696 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 697 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 698 "R_PPC64_SECTOFF", /* name */
b34976b6 699 FALSE, /* partial_inplace */
5bd4f169 700 0, /* src_mask */
c061c2d8 701 0xffff, /* dst_mask */
b34976b6 702 FALSE), /* pcrel_offset */
5bd4f169 703
c061c2d8 704 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM
705 HOWTO (R_PPC64_SECTOFF_LO, /* type */
706 0, /* rightshift */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
708 16, /* bitsize */
b34976b6 709 FALSE, /* pc_relative */
5bd4f169
AM
710 0, /* bitpos */
711 complain_overflow_dont, /* complain_on_overflow */
805fc799 712 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 713 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 714 FALSE, /* partial_inplace */
5bd4f169
AM
715 0, /* src_mask */
716 0xffff, /* dst_mask */
b34976b6 717 FALSE), /* pcrel_offset */
5bd4f169
AM
718
719 /* 16-bit upper half section relative relocation. */
720 HOWTO (R_PPC64_SECTOFF_HI, /* type */
721 16, /* rightshift */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
723 16, /* bitsize */
b34976b6 724 FALSE, /* pc_relative */
5bd4f169
AM
725 0, /* bitpos */
726 complain_overflow_dont, /* complain_on_overflow */
805fc799 727 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 728 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 729 FALSE, /* partial_inplace */
5bd4f169
AM
730 0, /* src_mask */
731 0xffff, /* dst_mask */
b34976b6 732 FALSE), /* pcrel_offset */
5bd4f169
AM
733
734 /* 16-bit upper half adjusted section relative relocation. */
735 HOWTO (R_PPC64_SECTOFF_HA, /* type */
736 16, /* rightshift */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
738 16, /* bitsize */
b34976b6 739 FALSE, /* pc_relative */
5bd4f169
AM
740 0, /* bitpos */
741 complain_overflow_dont, /* complain_on_overflow */
805fc799 742 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 743 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 744 FALSE, /* partial_inplace */
5bd4f169
AM
745 0, /* src_mask */
746 0xffff, /* dst_mask */
b34976b6 747 FALSE), /* pcrel_offset */
5bd4f169 748
04c9666a
AM
749 /* Like R_PPC64_REL24 without touching the two least significant bits. */
750 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM
751 2, /* rightshift */
752 2, /* size (0 = byte, 1 = short, 2 = long) */
753 30, /* bitsize */
b34976b6 754 TRUE, /* pc_relative */
5bd4f169
AM
755 0, /* bitpos */
756 complain_overflow_dont, /* complain_on_overflow */
757 bfd_elf_generic_reloc, /* special_function */
04c9666a 758 "R_PPC64_REL30", /* name */
b34976b6 759 FALSE, /* partial_inplace */
d006db6c 760 0, /* src_mask */
5bd4f169 761 0xfffffffc, /* dst_mask */
b34976b6 762 TRUE), /* pcrel_offset */
5bd4f169
AM
763
764 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
765
766 /* A standard 64-bit relocation. */
767 HOWTO (R_PPC64_ADDR64, /* type */
768 0, /* rightshift */
769 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
770 64, /* bitsize */
b34976b6 771 FALSE, /* pc_relative */
5bd4f169
AM
772 0, /* bitpos */
773 complain_overflow_dont, /* complain_on_overflow */
774 bfd_elf_generic_reloc, /* special_function */
775 "R_PPC64_ADDR64", /* name */
b34976b6 776 FALSE, /* partial_inplace */
5bd4f169 777 0, /* src_mask */
f5e87a1d 778 ONES (64), /* dst_mask */
b34976b6 779 FALSE), /* pcrel_offset */
5bd4f169
AM
780
781 /* The bits 32-47 of an address. */
782 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
783 32, /* rightshift */
784 1, /* size (0 = byte, 1 = short, 2 = long) */
785 16, /* bitsize */
b34976b6 786 FALSE, /* pc_relative */
5bd4f169
AM
787 0, /* bitpos */
788 complain_overflow_dont, /* complain_on_overflow */
789 bfd_elf_generic_reloc, /* special_function */
790 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 791 FALSE, /* partial_inplace */
5bd4f169
AM
792 0, /* src_mask */
793 0xffff, /* dst_mask */
b34976b6 794 FALSE), /* pcrel_offset */
5bd4f169
AM
795
796 /* The bits 32-47 of an address, plus 1 if the contents of the low
797 16 bits, treated as a signed number, is negative. */
798 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
799 32, /* rightshift */
800 1, /* size (0 = byte, 1 = short, 2 = long) */
801 16, /* bitsize */
b34976b6 802 FALSE, /* pc_relative */
5bd4f169
AM
803 0, /* bitpos */
804 complain_overflow_dont, /* complain_on_overflow */
805fc799 805 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 806 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 807 FALSE, /* partial_inplace */
5bd4f169
AM
808 0, /* src_mask */
809 0xffff, /* dst_mask */
b34976b6 810 FALSE), /* pcrel_offset */
5bd4f169
AM
811
812 /* The bits 48-63 of an address. */
813 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
814 48, /* rightshift */
815 1, /* size (0 = byte, 1 = short, 2 = long) */
816 16, /* bitsize */
b34976b6 817 FALSE, /* pc_relative */
5bd4f169
AM
818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 822 FALSE, /* partial_inplace */
5bd4f169
AM
823 0, /* src_mask */
824 0xffff, /* dst_mask */
b34976b6 825 FALSE), /* pcrel_offset */
5bd4f169
AM
826
827 /* The bits 48-63 of an address, plus 1 if the contents of the low
828 16 bits, treated as a signed number, is negative. */
829 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
830 48, /* rightshift */
831 1, /* size (0 = byte, 1 = short, 2 = long) */
832 16, /* bitsize */
b34976b6 833 FALSE, /* pc_relative */
5bd4f169
AM
834 0, /* bitpos */
835 complain_overflow_dont, /* complain_on_overflow */
805fc799 836 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 837 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 838 FALSE, /* partial_inplace */
5bd4f169
AM
839 0, /* src_mask */
840 0xffff, /* dst_mask */
b34976b6 841 FALSE), /* pcrel_offset */
5bd4f169
AM
842
843 /* Like ADDR64, but may be unaligned. */
844 HOWTO (R_PPC64_UADDR64, /* type */
845 0, /* rightshift */
846 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
847 64, /* bitsize */
b34976b6 848 FALSE, /* pc_relative */
5bd4f169
AM
849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
851 bfd_elf_generic_reloc, /* special_function */
852 "R_PPC64_UADDR64", /* name */
b34976b6 853 FALSE, /* partial_inplace */
5bd4f169 854 0, /* src_mask */
f5e87a1d 855 ONES (64), /* dst_mask */
b34976b6 856 FALSE), /* pcrel_offset */
5bd4f169
AM
857
858 /* 64-bit relative relocation. */
859 HOWTO (R_PPC64_REL64, /* type */
860 0, /* rightshift */
861 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
862 64, /* bitsize */
b34976b6 863 TRUE, /* pc_relative */
5bd4f169
AM
864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_REL64", /* name */
b34976b6 868 FALSE, /* partial_inplace */
5bd4f169 869 0, /* src_mask */
f5e87a1d 870 ONES (64), /* dst_mask */
b34976b6 871 TRUE), /* pcrel_offset */
5bd4f169 872
cedb70c5 873 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
874 HOWTO (R_PPC64_PLT64, /* type */
875 0, /* rightshift */
876 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
877 64, /* bitsize */
b34976b6 878 FALSE, /* pc_relative */
5bd4f169
AM
879 0, /* bitpos */
880 complain_overflow_dont, /* complain_on_overflow */
805fc799 881 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 882 "R_PPC64_PLT64", /* name */
b34976b6 883 FALSE, /* partial_inplace */
5bd4f169 884 0, /* src_mask */
f5e87a1d 885 ONES (64), /* dst_mask */
b34976b6 886 FALSE), /* pcrel_offset */
5bd4f169
AM
887
888 /* 64-bit PC relative relocation to the symbol's procedure linkage
889 table. */
890 /* FIXME: R_PPC64_PLTREL64 not supported. */
891 HOWTO (R_PPC64_PLTREL64, /* type */
892 0, /* rightshift */
893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
894 64, /* bitsize */
b34976b6 895 TRUE, /* pc_relative */
5bd4f169
AM
896 0, /* bitpos */
897 complain_overflow_dont, /* complain_on_overflow */
805fc799 898 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 899 "R_PPC64_PLTREL64", /* name */
b34976b6 900 FALSE, /* partial_inplace */
5bd4f169 901 0, /* src_mask */
f5e87a1d 902 ONES (64), /* dst_mask */
b34976b6 903 TRUE), /* pcrel_offset */
5bd4f169
AM
904
905 /* 16 bit TOC-relative relocation. */
906
907 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
908 HOWTO (R_PPC64_TOC16, /* type */
909 0, /* rightshift */
910 1, /* size (0 = byte, 1 = short, 2 = long) */
911 16, /* bitsize */
b34976b6 912 FALSE, /* pc_relative */
5bd4f169
AM
913 0, /* bitpos */
914 complain_overflow_signed, /* complain_on_overflow */
805fc799 915 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 916 "R_PPC64_TOC16", /* name */
b34976b6 917 FALSE, /* partial_inplace */
5bd4f169
AM
918 0, /* src_mask */
919 0xffff, /* dst_mask */
b34976b6 920 FALSE), /* pcrel_offset */
5bd4f169
AM
921
922 /* 16 bit TOC-relative relocation without overflow. */
923
924 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
925 HOWTO (R_PPC64_TOC16_LO, /* type */
926 0, /* rightshift */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
b34976b6 929 FALSE, /* pc_relative */
5bd4f169
AM
930 0, /* bitpos */
931 complain_overflow_dont, /* complain_on_overflow */
805fc799 932 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 933 "R_PPC64_TOC16_LO", /* name */
b34976b6 934 FALSE, /* partial_inplace */
5bd4f169
AM
935 0, /* src_mask */
936 0xffff, /* dst_mask */
b34976b6 937 FALSE), /* pcrel_offset */
5bd4f169
AM
938
939 /* 16 bit TOC-relative relocation, high 16 bits. */
940
941 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
942 HOWTO (R_PPC64_TOC16_HI, /* type */
943 16, /* rightshift */
944 1, /* size (0 = byte, 1 = short, 2 = long) */
945 16, /* bitsize */
b34976b6 946 FALSE, /* pc_relative */
5bd4f169
AM
947 0, /* bitpos */
948 complain_overflow_dont, /* complain_on_overflow */
805fc799 949 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 950 "R_PPC64_TOC16_HI", /* name */
b34976b6 951 FALSE, /* partial_inplace */
5bd4f169
AM
952 0, /* src_mask */
953 0xffff, /* dst_mask */
b34976b6 954 FALSE), /* pcrel_offset */
5bd4f169
AM
955
956 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
957 contents of the low 16 bits, treated as a signed number, is
958 negative. */
959
960 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
961 HOWTO (R_PPC64_TOC16_HA, /* type */
962 16, /* rightshift */
963 1, /* size (0 = byte, 1 = short, 2 = long) */
964 16, /* bitsize */
b34976b6 965 FALSE, /* pc_relative */
5bd4f169
AM
966 0, /* bitpos */
967 complain_overflow_dont, /* complain_on_overflow */
805fc799 968 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 969 "R_PPC64_TOC16_HA", /* name */
b34976b6 970 FALSE, /* partial_inplace */
5bd4f169
AM
971 0, /* src_mask */
972 0xffff, /* dst_mask */
b34976b6 973 FALSE), /* pcrel_offset */
5bd4f169
AM
974
975 /* 64-bit relocation; insert value of TOC base (.TOC.). */
976
977 /* R_PPC64_TOC 51 doubleword64 .TOC. */
978 HOWTO (R_PPC64_TOC, /* type */
979 0, /* rightshift */
980 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
981 64, /* bitsize */
b34976b6 982 FALSE, /* pc_relative */
5bd4f169
AM
983 0, /* bitpos */
984 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 985 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 986 "R_PPC64_TOC", /* name */
b34976b6 987 FALSE, /* partial_inplace */
5bd4f169 988 0, /* src_mask */
f5e87a1d 989 ONES (64), /* dst_mask */
b34976b6 990 FALSE), /* pcrel_offset */
5bd4f169
AM
991
992 /* Like R_PPC64_GOT16, but also informs the link editor that the
993 value to relocate may (!) refer to a PLT entry which the link
994 editor (a) may replace with the symbol value. If the link editor
995 is unable to fully resolve the symbol, it may (b) create a PLT
996 entry and store the address to the new PLT entry in the GOT.
997 This permits lazy resolution of function symbols at run time.
998 The link editor may also skip all of this and just (c) emit a
999 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1000 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1001 HOWTO (R_PPC64_PLTGOT16, /* type */
1002 0, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1004 16, /* bitsize */
b34976b6 1005 FALSE, /* pc_relative */
5bd4f169
AM
1006 0, /* bitpos */
1007 complain_overflow_signed, /* complain_on_overflow */
805fc799 1008 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM
1009 "R_PPC64_PLTGOT16", /* name */
1010 FALSE, /* partial_inplace */
1011 0, /* src_mask */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
1014
1015 /* Like R_PPC64_PLTGOT16, but without overflow. */
1016 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1017 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1018 0, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
1021 FALSE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont, /* complain_on_overflow */
1024 ppc64_elf_unhandled_reloc, /* special_function */
1025 "R_PPC64_PLTGOT16_LO", /* name */
1026 FALSE, /* partial_inplace */
1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
1029 FALSE), /* pcrel_offset */
1030
1031 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1032 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1033 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1034 16, /* rightshift */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 16, /* bitsize */
1037 FALSE, /* pc_relative */
1038 0, /* bitpos */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc64_elf_unhandled_reloc, /* special_function */
1041 "R_PPC64_PLTGOT16_HI", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0xffff, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1048 1 if the contents of the low 16 bits, treated as a signed number,
1049 is negative. */
1050 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 16, /* bitsize */
1055 FALSE, /* pc_relative */
1056 0, /* bitpos */
1057 complain_overflow_dont,/* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HA", /* name */
1060 FALSE, /* partial_inplace */
1061 0, /* src_mask */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1064
1065 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1066 HOWTO (R_PPC64_ADDR16_DS, /* type */
1067 0, /* rightshift */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1069 16, /* bitsize */
1070 FALSE, /* pc_relative */
1071 0, /* bitpos */
1072 complain_overflow_bitfield, /* complain_on_overflow */
1073 bfd_elf_generic_reloc, /* special_function */
1074 "R_PPC64_ADDR16_DS", /* name */
1075 FALSE, /* partial_inplace */
1076 0, /* src_mask */
1077 0xfffc, /* dst_mask */
1078 FALSE), /* pcrel_offset */
1079
1080 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1081 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1082 0, /* rightshift */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1084 16, /* bitsize */
1085 FALSE, /* pc_relative */
1086 0, /* bitpos */
1087 complain_overflow_dont,/* complain_on_overflow */
1088 bfd_elf_generic_reloc, /* special_function */
1089 "R_PPC64_ADDR16_LO_DS",/* name */
1090 FALSE, /* partial_inplace */
1091 0, /* src_mask */
1092 0xfffc, /* dst_mask */
1093 FALSE), /* pcrel_offset */
1094
1095 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1096 HOWTO (R_PPC64_GOT16_DS, /* type */
1097 0, /* rightshift */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1099 16, /* bitsize */
1100 FALSE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_signed, /* complain_on_overflow */
1103 ppc64_elf_unhandled_reloc, /* special_function */
1104 "R_PPC64_GOT16_DS", /* name */
1105 FALSE, /* partial_inplace */
1106 0, /* src_mask */
1107 0xfffc, /* dst_mask */
1108 FALSE), /* pcrel_offset */
1109
1110 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1111 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1112 0, /* rightshift */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 16, /* bitsize */
1115 FALSE, /* pc_relative */
1116 0, /* bitpos */
1117 complain_overflow_dont, /* complain_on_overflow */
1118 ppc64_elf_unhandled_reloc, /* special_function */
1119 "R_PPC64_GOT16_LO_DS", /* name */
1120 FALSE, /* partial_inplace */
1121 0, /* src_mask */
1122 0xfffc, /* dst_mask */
1123 FALSE), /* pcrel_offset */
1124
1125 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1126 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1127 0, /* rightshift */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 16, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_dont, /* complain_on_overflow */
1133 ppc64_elf_unhandled_reloc, /* special_function */
1134 "R_PPC64_PLT16_LO_DS", /* name */
1135 FALSE, /* partial_inplace */
1136 0, /* src_mask */
1137 0xfffc, /* dst_mask */
1138 FALSE), /* pcrel_offset */
1139
1140 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1141 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1142 0, /* rightshift */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 16, /* bitsize */
1145 FALSE, /* pc_relative */
1146 0, /* bitpos */
1147 complain_overflow_bitfield, /* complain_on_overflow */
1148 ppc64_elf_sectoff_reloc, /* special_function */
1149 "R_PPC64_SECTOFF_DS", /* name */
1150 FALSE, /* partial_inplace */
1151 0, /* src_mask */
1152 0xfffc, /* dst_mask */
1153 FALSE), /* pcrel_offset */
1154
1155 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1156 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1157 0, /* rightshift */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1159 16, /* bitsize */
1160 FALSE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont, /* complain_on_overflow */
1163 ppc64_elf_sectoff_reloc, /* special_function */
1164 "R_PPC64_SECTOFF_LO_DS",/* name */
1165 FALSE, /* partial_inplace */
1166 0, /* src_mask */
1167 0xfffc, /* dst_mask */
1168 FALSE), /* pcrel_offset */
1169
1170 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1171 HOWTO (R_PPC64_TOC16_DS, /* type */
1172 0, /* rightshift */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1174 16, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_signed, /* complain_on_overflow */
1178 ppc64_elf_toc_reloc, /* special_function */
1179 "R_PPC64_TOC16_DS", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xfffc, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1186 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1187 0, /* rightshift */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1189 16, /* bitsize */
1190 FALSE, /* pc_relative */
1191 0, /* bitpos */
1192 complain_overflow_dont, /* complain_on_overflow */
1193 ppc64_elf_toc_reloc, /* special_function */
1194 "R_PPC64_TOC16_LO_DS", /* name */
1195 FALSE, /* partial_inplace */
1196 0, /* src_mask */
1197 0xfffc, /* dst_mask */
1198 FALSE), /* pcrel_offset */
1199
1200 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1201 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1202 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM
1203 0, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_signed, /* complain_on_overflow */
1209 ppc64_elf_unhandled_reloc, /* special_function */
1210 "R_PPC64_PLTGOT16_DS", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1217 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1218 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1219 0, /* rightshift */
1220 1, /* size (0 = byte, 1 = short, 2 = long) */
1221 16, /* bitsize */
1222 FALSE, /* pc_relative */
1223 0, /* bitpos */
1224 complain_overflow_dont, /* complain_on_overflow */
1225 ppc64_elf_unhandled_reloc, /* special_function */
1226 "R_PPC64_PLTGOT16_LO_DS",/* name */
1227 FALSE, /* partial_inplace */
1228 0, /* src_mask */
1229 0xfffc, /* dst_mask */
1230 FALSE), /* pcrel_offset */
1231
1232 /* Marker reloc for TLS. */
1233 HOWTO (R_PPC64_TLS,
1234 0, /* rightshift */
1235 2, /* size (0 = byte, 1 = short, 2 = long) */
1236 32, /* bitsize */
1237 FALSE, /* pc_relative */
1238 0, /* bitpos */
1239 complain_overflow_dont, /* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_PPC64_TLS", /* name */
1242 FALSE, /* partial_inplace */
1243 0, /* src_mask */
1244 0, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1246
1247 /* Computes the load module index of the load module that contains the
1248 definition of its TLS sym. */
1249 HOWTO (R_PPC64_DTPMOD64,
1250 0, /* rightshift */
1251 4, /* size (0 = byte, 1 = short, 2 = long) */
1252 64, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_dont, /* complain_on_overflow */
1256 ppc64_elf_unhandled_reloc, /* special_function */
1257 "R_PPC64_DTPMOD64", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 ONES (64), /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* Computes a dtv-relative displacement, the difference between the value
1264 of sym+add and the base address of the thread-local storage block that
1265 contains the definition of sym, minus 0x8000. */
1266 HOWTO (R_PPC64_DTPREL64,
1267 0, /* rightshift */
1268 4, /* size (0 = byte, 1 = short, 2 = long) */
1269 64, /* bitsize */
1270 FALSE, /* pc_relative */
1271 0, /* bitpos */
1272 complain_overflow_dont, /* complain_on_overflow */
1273 ppc64_elf_unhandled_reloc, /* special_function */
1274 "R_PPC64_DTPREL64", /* name */
1275 FALSE, /* partial_inplace */
1276 0, /* src_mask */
1277 ONES (64), /* dst_mask */
1278 FALSE), /* pcrel_offset */
1279
1280 /* A 16 bit dtprel reloc. */
1281 HOWTO (R_PPC64_DTPREL16,
1282 0, /* rightshift */
1283 1, /* size (0 = byte, 1 = short, 2 = long) */
1284 16, /* bitsize */
1285 FALSE, /* pc_relative */
1286 0, /* bitpos */
1287 complain_overflow_signed, /* complain_on_overflow */
1288 ppc64_elf_unhandled_reloc, /* special_function */
1289 "R_PPC64_DTPREL16", /* name */
1290 FALSE, /* partial_inplace */
1291 0, /* src_mask */
1292 0xffff, /* dst_mask */
1293 FALSE), /* pcrel_offset */
1294
1295 /* Like DTPREL16, but no overflow. */
1296 HOWTO (R_PPC64_DTPREL16_LO,
1297 0, /* rightshift */
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1299 16, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 ppc64_elf_unhandled_reloc, /* special_function */
1304 "R_PPC64_DTPREL16_LO", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1311 HOWTO (R_PPC64_DTPREL16_HI,
1312 16, /* rightshift */
1313 1, /* size (0 = byte, 1 = short, 2 = long) */
1314 16, /* bitsize */
1315 FALSE, /* pc_relative */
1316 0, /* bitpos */
1317 complain_overflow_dont, /* complain_on_overflow */
1318 ppc64_elf_unhandled_reloc, /* special_function */
1319 "R_PPC64_DTPREL16_HI", /* name */
1320 FALSE, /* partial_inplace */
1321 0, /* src_mask */
1322 0xffff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1324
1325 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1326 HOWTO (R_PPC64_DTPREL16_HA,
1327 16, /* rightshift */
1328 1, /* size (0 = byte, 1 = short, 2 = long) */
1329 16, /* bitsize */
1330 FALSE, /* pc_relative */
1331 0, /* bitpos */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL16_HA", /* name */
1335 FALSE, /* partial_inplace */
1336 0, /* src_mask */
1337 0xffff, /* dst_mask */
1338 FALSE), /* pcrel_offset */
1339
1340 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1341 HOWTO (R_PPC64_DTPREL16_HIGHER,
1342 32, /* rightshift */
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1344 16, /* bitsize */
1345 FALSE, /* pc_relative */
1346 0, /* bitpos */
1347 complain_overflow_dont, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16_HIGHER", /* name */
1350 FALSE, /* partial_inplace */
1351 0, /* src_mask */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1354
1355 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1356 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1357 32, /* rightshift */
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1359 16, /* bitsize */
1360 FALSE, /* pc_relative */
1361 0, /* bitpos */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_HIGHERA", /* name */
1365 FALSE, /* partial_inplace */
1366 0, /* src_mask */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1369
1370 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1372 48, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 FALSE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HIGHEST", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
1385 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1387 48, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1389 16, /* bitsize */
1390 FALSE, /* pc_relative */
1391 0, /* bitpos */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1395 FALSE, /* partial_inplace */
1396 0, /* src_mask */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1399
1400 /* Like DTPREL16, but for insns with a DS field. */
1401 HOWTO (R_PPC64_DTPREL16_DS,
1402 0, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 16, /* bitsize */
1405 FALSE, /* pc_relative */
1406 0, /* bitpos */
1407 complain_overflow_signed, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_DS", /* name */
1410 FALSE, /* partial_inplace */
1411 0, /* src_mask */
1412 0xfffc, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1414
1415 /* Like DTPREL16_DS, but no overflow. */
1416 HOWTO (R_PPC64_DTPREL16_LO_DS,
1417 0, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 16, /* bitsize */
1420 FALSE, /* pc_relative */
1421 0, /* bitpos */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_LO_DS", /* name */
1425 FALSE, /* partial_inplace */
1426 0, /* src_mask */
1427 0xfffc, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1429
1430 /* Computes a tp-relative displacement, the difference between the value of
1431 sym+add and the value of the thread pointer (r13). */
1432 HOWTO (R_PPC64_TPREL64,
1433 0, /* rightshift */
1434 4, /* size (0 = byte, 1 = short, 2 = long) */
1435 64, /* bitsize */
1436 FALSE, /* pc_relative */
1437 0, /* bitpos */
1438 complain_overflow_dont, /* complain_on_overflow */
1439 ppc64_elf_unhandled_reloc, /* special_function */
1440 "R_PPC64_TPREL64", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 ONES (64), /* dst_mask */
1444 FALSE), /* pcrel_offset */
1445
1446 /* A 16 bit tprel reloc. */
1447 HOWTO (R_PPC64_TPREL16,
1448 0, /* rightshift */
1449 1, /* size (0 = byte, 1 = short, 2 = long) */
1450 16, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_signed, /* complain_on_overflow */
1454 ppc64_elf_unhandled_reloc, /* special_function */
1455 "R_PPC64_TPREL16", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0xffff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 /* Like TPREL16, but no overflow. */
1462 HOWTO (R_PPC64_TPREL16_LO,
1463 0, /* rightshift */
1464 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 16, /* bitsize */
1466 FALSE, /* pc_relative */
1467 0, /* bitpos */
1468 complain_overflow_dont, /* complain_on_overflow */
1469 ppc64_elf_unhandled_reloc, /* special_function */
1470 "R_PPC64_TPREL16_LO", /* name */
1471 FALSE, /* partial_inplace */
1472 0, /* src_mask */
1473 0xffff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* Like TPREL16_LO, but next higher group of 16 bits. */
1477 HOWTO (R_PPC64_TPREL16_HI,
1478 16, /* rightshift */
1479 1, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
1483 complain_overflow_dont, /* complain_on_overflow */
1484 ppc64_elf_unhandled_reloc, /* special_function */
1485 "R_PPC64_TPREL16_HI", /* name */
1486 FALSE, /* partial_inplace */
1487 0, /* src_mask */
1488 0xffff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1490
1491 /* Like TPREL16_HI, but adjust for low 16 bits. */
1492 HOWTO (R_PPC64_TPREL16_HA,
1493 16, /* rightshift */
1494 1, /* size (0 = byte, 1 = short, 2 = long) */
1495 16, /* bitsize */
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL16_HA", /* name */
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 0xffff, /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* Like TPREL16_HI, but next higher group of 16 bits. */
1507 HOWTO (R_PPC64_TPREL16_HIGHER,
1508 32, /* rightshift */
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1510 16, /* bitsize */
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
1513 complain_overflow_dont, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16_HIGHER", /* name */
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1520
1521 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1522 HOWTO (R_PPC64_TPREL16_HIGHERA,
1523 32, /* rightshift */
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1525 16, /* bitsize */
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_HIGHERA", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HIGHEST,
1538 48, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1540 16, /* bitsize */
1541 FALSE, /* pc_relative */
1542 0, /* bitpos */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HIGHEST", /* name */
1546 FALSE, /* partial_inplace */
1547 0, /* src_mask */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1550
1551 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1553 48, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1555 16, /* bitsize */
1556 FALSE, /* pc_relative */
1557 0, /* bitpos */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HIGHESTA", /* name */
1561 FALSE, /* partial_inplace */
1562 0, /* src_mask */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1565
1566 /* Like TPREL16, but for insns with a DS field. */
1567 HOWTO (R_PPC64_TPREL16_DS,
1568 0, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1570 16, /* bitsize */
1571 FALSE, /* pc_relative */
1572 0, /* bitpos */
1573 complain_overflow_signed, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_DS", /* name */
1576 FALSE, /* partial_inplace */
1577 0, /* src_mask */
1578 0xfffc, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1580
1581 /* Like TPREL16_DS, but no overflow. */
1582 HOWTO (R_PPC64_TPREL16_LO_DS,
1583 0, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1585 16, /* bitsize */
1586 FALSE, /* pc_relative */
1587 0, /* bitpos */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_LO_DS", /* name */
1591 FALSE, /* partial_inplace */
1592 0, /* src_mask */
1593 0xfffc, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1595
1596 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1597 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1598 to the first entry relative to the TOC base (r2). */
1599 HOWTO (R_PPC64_GOT_TLSGD16,
1600 0, /* rightshift */
1601 1, /* size (0 = byte, 1 = short, 2 = long) */
1602 16, /* bitsize */
1603 FALSE, /* pc_relative */
1604 0, /* bitpos */
1605 complain_overflow_signed, /* complain_on_overflow */
1606 ppc64_elf_unhandled_reloc, /* special_function */
1607 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1608 FALSE, /* partial_inplace */
5bd4f169
AM
1609 0, /* src_mask */
1610 0xffff, /* dst_mask */
b34976b6 1611 FALSE), /* pcrel_offset */
5bd4f169 1612
411e1bfb
AM
1613 /* Like GOT_TLSGD16, but no overflow. */
1614 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM
1615 0, /* rightshift */
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1617 16, /* bitsize */
b34976b6 1618 FALSE, /* pc_relative */
5bd4f169
AM
1619 0, /* bitpos */
1620 complain_overflow_dont, /* complain_on_overflow */
805fc799 1621 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1622 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1623 FALSE, /* partial_inplace */
5bd4f169
AM
1624 0, /* src_mask */
1625 0xffff, /* dst_mask */
b34976b6 1626 FALSE), /* pcrel_offset */
5bd4f169 1627
411e1bfb
AM
1628 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1629 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM
1630 16, /* rightshift */
1631 1, /* size (0 = byte, 1 = short, 2 = long) */
1632 16, /* bitsize */
b34976b6 1633 FALSE, /* pc_relative */
5bd4f169
AM
1634 0, /* bitpos */
1635 complain_overflow_dont, /* complain_on_overflow */
805fc799 1636 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1637 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1638 FALSE, /* partial_inplace */
5bd4f169
AM
1639 0, /* src_mask */
1640 0xffff, /* dst_mask */
b34976b6 1641 FALSE), /* pcrel_offset */
5bd4f169 1642
411e1bfb
AM
1643 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1644 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM
1645 16, /* rightshift */
1646 1, /* size (0 = byte, 1 = short, 2 = long) */
1647 16, /* bitsize */
b34976b6 1648 FALSE, /* pc_relative */
5bd4f169 1649 0, /* bitpos */
411e1bfb 1650 complain_overflow_dont, /* complain_on_overflow */
805fc799 1651 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1652 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1653 FALSE, /* partial_inplace */
5bd4f169
AM
1654 0, /* src_mask */
1655 0xffff, /* dst_mask */
b34976b6 1656 FALSE), /* pcrel_offset */
5bd4f169 1657
411e1bfb
AM
1658 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1659 with values (sym+add)@dtpmod and zero, and computes the offset to the
1660 first entry relative to the TOC base (r2). */
1661 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM
1662 0, /* rightshift */
1663 1, /* size (0 = byte, 1 = short, 2 = long) */
1664 16, /* bitsize */
b34976b6 1665 FALSE, /* pc_relative */
5bd4f169 1666 0, /* bitpos */
411e1bfb
AM
1667 complain_overflow_signed, /* complain_on_overflow */
1668 ppc64_elf_unhandled_reloc, /* special_function */
1669 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1670 FALSE, /* partial_inplace */
d006db6c 1671 0, /* src_mask */
411e1bfb 1672 0xffff, /* dst_mask */
b34976b6 1673 FALSE), /* pcrel_offset */
5bd4f169 1674
411e1bfb
AM
1675 /* Like GOT_TLSLD16, but no overflow. */
1676 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM
1677 0, /* rightshift */
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1679 16, /* bitsize */
b34976b6 1680 FALSE, /* pc_relative */
5bd4f169 1681 0, /* bitpos */
411e1bfb
AM
1682 complain_overflow_dont, /* complain_on_overflow */
1683 ppc64_elf_unhandled_reloc, /* special_function */
1684 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1685 FALSE, /* partial_inplace */
d006db6c 1686 0, /* src_mask */
411e1bfb 1687 0xffff, /* dst_mask */
b34976b6 1688 FALSE), /* pcrel_offset */
5bd4f169 1689
411e1bfb
AM
1690 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1691 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1692 16, /* rightshift */
5bd4f169
AM
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1694 16, /* bitsize */
b34976b6 1695 FALSE, /* pc_relative */
5bd4f169 1696 0, /* bitpos */
411e1bfb 1697 complain_overflow_dont, /* complain_on_overflow */
805fc799 1698 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1699 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1700 FALSE, /* partial_inplace */
d006db6c 1701 0, /* src_mask */
411e1bfb 1702 0xffff, /* dst_mask */
b34976b6 1703 FALSE), /* pcrel_offset */
5bd4f169 1704
411e1bfb
AM
1705 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1706 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1707 16, /* rightshift */
5bd4f169
AM
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1709 16, /* bitsize */
b34976b6 1710 FALSE, /* pc_relative */
5bd4f169
AM
1711 0, /* bitpos */
1712 complain_overflow_dont, /* complain_on_overflow */
805fc799 1713 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1714 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1715 FALSE, /* partial_inplace */
d006db6c 1716 0, /* src_mask */
411e1bfb 1717 0xffff, /* dst_mask */
b34976b6 1718 FALSE), /* pcrel_offset */
5bd4f169 1719
411e1bfb
AM
1720 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1721 the offset to the entry relative to the TOC base (r2). */
1722 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM
1723 0, /* rightshift */
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1725 16, /* bitsize */
b34976b6 1726 FALSE, /* pc_relative */
5bd4f169 1727 0, /* bitpos */
411e1bfb 1728 complain_overflow_signed, /* complain_on_overflow */
805fc799 1729 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1730 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1731 FALSE, /* partial_inplace */
d006db6c 1732 0, /* src_mask */
5bd4f169 1733 0xfffc, /* dst_mask */
b34976b6 1734 FALSE), /* pcrel_offset */
5bd4f169 1735
411e1bfb
AM
1736 /* Like GOT_DTPREL16_DS, but no overflow. */
1737 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1738 0, /* rightshift */
c061c2d8
AM
1739 1, /* size (0 = byte, 1 = short, 2 = long) */
1740 16, /* bitsize */
b34976b6 1741 FALSE, /* pc_relative */
5bd4f169 1742 0, /* bitpos */
411e1bfb
AM
1743 complain_overflow_dont, /* complain_on_overflow */
1744 ppc64_elf_unhandled_reloc, /* special_function */
1745 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1746 FALSE, /* partial_inplace */
d006db6c 1747 0, /* src_mask */
c061c2d8 1748 0xfffc, /* dst_mask */
b34976b6 1749 FALSE), /* pcrel_offset */
5bd4f169 1750
411e1bfb
AM
1751 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1752 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1753 16, /* rightshift */
5bd4f169
AM
1754 1, /* size (0 = byte, 1 = short, 2 = long) */
1755 16, /* bitsize */
b34976b6 1756 FALSE, /* pc_relative */
5bd4f169
AM
1757 0, /* bitpos */
1758 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1759 ppc64_elf_unhandled_reloc, /* special_function */
1760 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1761 FALSE, /* partial_inplace */
d006db6c 1762 0, /* src_mask */
411e1bfb 1763 0xffff, /* dst_mask */
b34976b6 1764 FALSE), /* pcrel_offset */
5bd4f169 1765
411e1bfb
AM
1766 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1767 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1768 16, /* rightshift */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1770 16, /* bitsize */
1771 FALSE, /* pc_relative */
1772 0, /* bitpos */
1773 complain_overflow_dont, /* complain_on_overflow */
1774 ppc64_elf_unhandled_reloc, /* special_function */
1775 "R_PPC64_GOT_DTPREL16_HA", /* name */
1776 FALSE, /* partial_inplace */
1777 0, /* src_mask */
1778 0xffff, /* dst_mask */
1779 FALSE), /* pcrel_offset */
1780
1781 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1782 offset to the entry relative to the TOC base (r2). */
1783 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM
1784 0, /* rightshift */
1785 1, /* size (0 = byte, 1 = short, 2 = long) */
1786 16, /* bitsize */
b34976b6 1787 FALSE, /* pc_relative */
5bd4f169
AM
1788 0, /* bitpos */
1789 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM
1790 ppc64_elf_unhandled_reloc, /* special_function */
1791 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1792 FALSE, /* partial_inplace */
d006db6c 1793 0, /* src_mask */
ad8e1ba5 1794 0xfffc, /* dst_mask */
b34976b6 1795 FALSE), /* pcrel_offset */
5bd4f169 1796
411e1bfb
AM
1797 /* Like GOT_TPREL16_DS, but no overflow. */
1798 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM
1799 0, /* rightshift */
1800 1, /* size (0 = byte, 1 = short, 2 = long) */
1801 16, /* bitsize */
b34976b6 1802 FALSE, /* pc_relative */
5bd4f169
AM
1803 0, /* bitpos */
1804 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1805 ppc64_elf_unhandled_reloc, /* special_function */
1806 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1807 FALSE, /* partial_inplace */
d006db6c 1808 0, /* src_mask */
ad8e1ba5 1809 0xfffc, /* dst_mask */
b34976b6 1810 FALSE), /* pcrel_offset */
5bd4f169 1811
411e1bfb
AM
1812 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1813 HOWTO (R_PPC64_GOT_TPREL16_HI,
1814 16, /* rightshift */
5bd4f169
AM
1815 1, /* size (0 = byte, 1 = short, 2 = long) */
1816 16, /* bitsize */
b34976b6 1817 FALSE, /* pc_relative */
5bd4f169 1818 0, /* bitpos */
411e1bfb 1819 complain_overflow_dont, /* complain_on_overflow */
805fc799 1820 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1821 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1822 FALSE, /* partial_inplace */
d006db6c 1823 0, /* src_mask */
411e1bfb 1824 0xffff, /* dst_mask */
b34976b6 1825 FALSE), /* pcrel_offset */
5bd4f169 1826
411e1bfb
AM
1827 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1828 HOWTO (R_PPC64_GOT_TPREL16_HA,
1829 16, /* rightshift */
5bd4f169
AM
1830 1, /* size (0 = byte, 1 = short, 2 = long) */
1831 16, /* bitsize */
b34976b6 1832 FALSE, /* pc_relative */
5bd4f169
AM
1833 0, /* bitpos */
1834 complain_overflow_dont, /* complain_on_overflow */
805fc799 1835 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1836 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1837 FALSE, /* partial_inplace */
d006db6c 1838 0, /* src_mask */
411e1bfb 1839 0xffff, /* dst_mask */
b34976b6 1840 FALSE), /* pcrel_offset */
5bd4f169
AM
1841
1842 /* GNU extension to record C++ vtable hierarchy. */
1843 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1844 0, /* rightshift */
1845 0, /* size (0 = byte, 1 = short, 2 = long) */
1846 0, /* bitsize */
b34976b6 1847 FALSE, /* pc_relative */
5bd4f169
AM
1848 0, /* bitpos */
1849 complain_overflow_dont, /* complain_on_overflow */
1850 NULL, /* special_function */
1851 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1852 FALSE, /* partial_inplace */
5bd4f169
AM
1853 0, /* src_mask */
1854 0, /* dst_mask */
b34976b6 1855 FALSE), /* pcrel_offset */
5bd4f169
AM
1856
1857 /* GNU extension to record C++ vtable member usage. */
1858 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1859 0, /* rightshift */
1860 0, /* size (0 = byte, 1 = short, 2 = long) */
1861 0, /* bitsize */
b34976b6 1862 FALSE, /* pc_relative */
5bd4f169
AM
1863 0, /* bitpos */
1864 complain_overflow_dont, /* complain_on_overflow */
1865 NULL, /* special_function */
1866 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1867 FALSE, /* partial_inplace */
5bd4f169
AM
1868 0, /* src_mask */
1869 0, /* dst_mask */
b34976b6 1870 FALSE), /* pcrel_offset */
5bd4f169
AM
1871};
1872
1873\f
1874/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1875 be done. */
1876
1877static void
4ce794b7 1878ppc_howto_init (void)
5bd4f169
AM
1879{
1880 unsigned int i, type;
1881
1882 for (i = 0;
1883 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1884 i++)
1885 {
1886 type = ppc64_elf_howto_raw[i].type;
1887 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1888 / sizeof (ppc64_elf_howto_table[0])));
1889 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1890 }
1891}
1892
1893static reloc_howto_type *
4ce794b7
AM
1894ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1895 bfd_reloc_code_real_type code)
5bd4f169 1896{
411e1bfb 1897 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM
1898
1899 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1900 /* Initialize howto table if needed. */
1901 ppc_howto_init ();
1902
4ce794b7 1903 switch (code)
5bd4f169
AM
1904 {
1905 default:
4ce794b7 1906 return NULL;
5bd4f169 1907
411e1bfb
AM
1908 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1909 break;
1910 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1911 break;
1912 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1913 break;
1914 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1915 break;
1916 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1917 break;
1918 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1919 break;
1920 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1921 break;
411e1bfb 1922 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1923 break;
411e1bfb 1924 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1925 break;
411e1bfb 1926 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2031 break;
411e1bfb 2032 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2033 break;
411e1bfb 2034 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2035 break;
411e1bfb 2036 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2037 break;
411e1bfb 2038 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2039 break;
411e1bfb
AM
2040 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2041 break;
2042 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2043 break;
2044 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2045 break;
2046 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2047 break;
2048 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2049 break;
2050 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2051 break;
2052 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2053 break;
2054 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2065 break;
2066 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2067 break;
2068 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2069 break;
2070 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2071 break;
2072 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2073 break;
2074 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2075 break;
2076 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2077 break;
2078 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2079 break;
2080 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2081 break;
2082 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2083 break;
2084 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2085 break;
2086 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2087 break;
2088 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2089 break;
2090 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2091 break;
2092 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2093 break;
2094 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2095 break;
2096 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2097 break;
2098 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2099 break;
2100 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2101 break;
2102 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2103 break;
2104 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2105 break;
2106 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2107 break;
2108 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM
2109 break;
2110 }
2111
4ce794b7 2112 return ppc64_elf_howto_table[r];
5bd4f169
AM
2113};
2114
157090f7
AM
2115static reloc_howto_type *
2116ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2117 const char *r_name)
2118{
2119 unsigned int i;
2120
2121 for (i = 0;
2122 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2123 i++)
2124 if (ppc64_elf_howto_raw[i].name != NULL
2125 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2126 return &ppc64_elf_howto_raw[i];
2127
2128 return NULL;
2129}
2130
5bd4f169
AM
2131/* Set the howto pointer for a PowerPC ELF reloc. */
2132
2133static void
4ce794b7
AM
2134ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2135 Elf_Internal_Rela *dst)
5bd4f169 2136{
65f38f15
AM
2137 unsigned int type;
2138
ef60b7ff 2139 /* Initialize howto table if needed. */
5bd4f169 2140 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
2141 ppc_howto_init ();
2142
65f38f15 2143 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ
2144 if (type >= (sizeof (ppc64_elf_howto_table)
2145 / sizeof (ppc64_elf_howto_table[0])))
2146 {
2147 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC
2148 abfd, (int) type);
2149 type = R_PPC64_NONE;
d0fb9a8d 2150 }
65f38f15 2151 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM
2152}
2153
04c9666a 2154/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM
2155
2156static bfd_reloc_status_type
4ce794b7
AM
2157ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2158 void *data, asection *input_section,
2159 bfd *output_bfd, char **error_message)
5bd4f169 2160{
805fc799
AM
2161 /* If this is a relocatable link (output_bfd test tells us), just
2162 call the generic function. Any adjustment will be done at final
2163 link time. */
2164 if (output_bfd != NULL)
cedb70c5 2165 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2166 input_section, output_bfd, error_message);
2167
2168 /* Adjust the addend for sign extension of the low 16 bits.
2169 We won't actually be using the low 16 bits, so trashing them
2170 doesn't matter. */
2171 reloc_entry->addend += 0x8000;
2172 return bfd_reloc_continue;
2173}
5bd4f169 2174
2441e016
AM
2175static bfd_reloc_status_type
2176ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2177 void *data, asection *input_section,
2178 bfd *output_bfd, char **error_message)
2179{
2180 if (output_bfd != NULL)
2181 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2182 input_section, output_bfd, error_message);
2183
699733f6
AM
2184 if (strcmp (symbol->section->name, ".opd") == 0
2185 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM
2186 {
2187 bfd_vma dest = opd_entry_value (symbol->section,
2188 symbol->value + reloc_entry->addend,
2189 NULL, NULL);
2190 if (dest != (bfd_vma) -1)
2191 reloc_entry->addend = dest - (symbol->value
2192 + symbol->section->output_section->vma
2193 + symbol->section->output_offset);
2194 }
2195 return bfd_reloc_continue;
2196}
2197
805fc799 2198static bfd_reloc_status_type
4ce794b7
AM
2199ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2200 void *data, asection *input_section,
2201 bfd *output_bfd, char **error_message)
805fc799
AM
2202{
2203 long insn;
04c9666a 2204 enum elf_ppc64_reloc_type r_type;
805fc799
AM
2205 bfd_size_type octets;
2206 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2207 bfd_boolean is_power4 = FALSE;
805fc799
AM
2208
2209 /* If this is a relocatable link (output_bfd test tells us), just
2210 call the generic function. Any adjustment will be done at final
2211 link time. */
5bd4f169 2212 if (output_bfd != NULL)
cedb70c5 2213 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2214 input_section, output_bfd, error_message);
2215
2216 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2217 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2218 insn &= ~(0x01 << 21);
4ce794b7 2219 r_type = reloc_entry->howto->type;
805fc799
AM
2220 if (r_type == R_PPC64_ADDR14_BRTAKEN
2221 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2222 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM
2223
2224 if (is_power4)
5bd4f169 2225 {
805fc799
AM
2226 /* Set 'a' bit. This is 0b00010 in BO field for branch
2227 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2228 for branch on CTR insns (BO == 1a00t or 1a01t). */
2229 if ((insn & (0x14 << 21)) == (0x04 << 21))
2230 insn |= 0x02 << 21;
2231 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2232 insn |= 0x08 << 21;
2233 else
2441e016 2234 goto out;
5bd4f169 2235 }
805fc799
AM
2236 else
2237 {
2238 bfd_vma target = 0;
2239 bfd_vma from;
5bd4f169 2240
805fc799
AM
2241 if (!bfd_is_com_section (symbol->section))
2242 target = symbol->value;
2243 target += symbol->section->output_section->vma;
2244 target += symbol->section->output_offset;
2245 target += reloc_entry->addend;
5bd4f169 2246
805fc799
AM
2247 from = (reloc_entry->address
2248 + input_section->output_offset
2249 + input_section->output_section->vma);
5bd4f169 2250
805fc799
AM
2251 /* Invert 'y' bit if not the default. */
2252 if ((bfd_signed_vma) (target - from) < 0)
2253 insn ^= 0x01 << 21;
2254 }
4ce794b7 2255 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM
2256 out:
2257 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2258 input_section, output_bfd, error_message);
805fc799 2259}
5bd4f169 2260
805fc799 2261static bfd_reloc_status_type
4ce794b7
AM
2262ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2263 void *data, asection *input_section,
2264 bfd *output_bfd, char **error_message)
805fc799
AM
2265{
2266 /* If this is a relocatable link (output_bfd test tells us), just
2267 call the generic function. Any adjustment will be done at final
2268 link time. */
2269 if (output_bfd != NULL)
cedb70c5 2270 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2271 input_section, output_bfd, error_message);
5bd4f169 2272
805fc799
AM
2273 /* Subtract the symbol section base address. */
2274 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM
2275 return bfd_reloc_continue;
2276}
2277
805fc799 2278static bfd_reloc_status_type
4ce794b7
AM
2279ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2280 void *data, asection *input_section,
2281 bfd *output_bfd, char **error_message)
805fc799
AM
2282{
2283 /* If this is a relocatable link (output_bfd test tells us), just
2284 call the generic function. Any adjustment will be done at final
2285 link time. */
2286 if (output_bfd != NULL)
cedb70c5 2287 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2288 input_section, output_bfd, error_message);
2289
2290 /* Subtract the symbol section base address. */
2291 reloc_entry->addend -= symbol->section->output_section->vma;
2292
2293 /* Adjust the addend for sign extension of the low 16 bits. */
2294 reloc_entry->addend += 0x8000;
2295 return bfd_reloc_continue;
2296}
2297
2298static bfd_reloc_status_type
4ce794b7
AM
2299ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2300 void *data, asection *input_section,
2301 bfd *output_bfd, char **error_message)
805fc799
AM
2302{
2303 bfd_vma TOCstart;
2304
2305 /* If this is a relocatable link (output_bfd test tells us), just
2306 call the generic function. Any adjustment will be done at final
2307 link time. */
2308 if (output_bfd != NULL)
cedb70c5 2309 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2310 input_section, output_bfd, error_message);
2311
2312 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2313 if (TOCstart == 0)
2314 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2315
2316 /* Subtract the TOC base address. */
2317 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2318 return bfd_reloc_continue;
2319}
2320
2321static bfd_reloc_status_type
4ce794b7
AM
2322ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2323 void *data, asection *input_section,
2324 bfd *output_bfd, char **error_message)
805fc799
AM
2325{
2326 bfd_vma TOCstart;
2327
2328 /* If this is a relocatable link (output_bfd test tells us), just
2329 call the generic function. Any adjustment will be done at final
2330 link time. */
2331 if (output_bfd != NULL)
cedb70c5 2332 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2333 input_section, output_bfd, error_message);
2334
2335 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2336 if (TOCstart == 0)
2337 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2338
2339 /* Subtract the TOC base address. */
2340 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2341
2342 /* Adjust the addend for sign extension of the low 16 bits. */
2343 reloc_entry->addend += 0x8000;
2344 return bfd_reloc_continue;
2345}
2346
2347static bfd_reloc_status_type
4ce794b7
AM
2348ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2349 void *data, asection *input_section,
2350 bfd *output_bfd, char **error_message)
805fc799
AM
2351{
2352 bfd_vma TOCstart;
2353 bfd_size_type octets;
2354
2355 /* If this is a relocatable link (output_bfd test tells us), just
2356 call the generic function. Any adjustment will be done at final
2357 link time. */
2358 if (output_bfd != NULL)
cedb70c5 2359 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2360 input_section, output_bfd, error_message);
2361
2362 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2363 if (TOCstart == 0)
2364 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2365
2366 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2367 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2368 return bfd_reloc_ok;
2369}
2370
2371static bfd_reloc_status_type
4ce794b7
AM
2372ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2373 void *data, asection *input_section,
2374 bfd *output_bfd, char **error_message)
805fc799
AM
2375{
2376 /* If this is a relocatable link (output_bfd test tells us), just
2377 call the generic function. Any adjustment will be done at final
2378 link time. */
2379 if (output_bfd != NULL)
cedb70c5 2380 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2381 input_section, output_bfd, error_message);
2382
2383 if (error_message != NULL)
2384 {
2385 static char buf[60];
2386 sprintf (buf, "generic linker can't handle %s",
2387 reloc_entry->howto->name);
2388 *error_message = buf;
2389 }
2390 return bfd_reloc_dangerous;
2391}
2392
e717da7e
AM
2393struct ppc64_elf_obj_tdata
2394{
2395 struct elf_obj_tdata elf;
2396
2397 /* Shortcuts to dynamic linker sections. */
2398 asection *got;
2399 asection *relgot;
2400
b3fac117
AM
2401 /* Used during garbage collection. We attach global symbols defined
2402 on removed .opd entries to this section so that the sym is removed. */
2403 asection *deleted_section;
81688140 2404
e717da7e
AM
2405 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2406 sections means we potentially need one of these for each input bfd. */
2407 union {
2408 bfd_signed_vma refcount;
2409 bfd_vma offset;
2410 } tlsld_got;
8860955f
AM
2411
2412 /* A copy of relocs before they are modified for --emit-relocs. */
2413 Elf_Internal_Rela *opd_relocs;
e717da7e
AM
2414};
2415
2416#define ppc64_elf_tdata(bfd) \
2417 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2418
2419#define ppc64_tlsld_got(bfd) \
2420 (&ppc64_elf_tdata (bfd)->tlsld_got)
2421
2422/* Override the generic function because we store some extras. */
2423
2424static bfd_boolean
2425ppc64_elf_mkobject (bfd *abfd)
2426{
e717da7e 2427 if (abfd->tdata.any == NULL)
62d7a5f6
AM
2428 {
2429 bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata);
2430 abfd->tdata.any = bfd_zalloc (abfd, amt);
2431 if (abfd->tdata.any == NULL)
2432 return FALSE;
2433 }
2434 return bfd_elf_mkobject (abfd);
e717da7e
AM
2435}
2436
ee75fd95
AM
2437/* Return 1 if target is one of ours. */
2438
7b53ace3 2439static bfd_boolean
ee75fd95 2440is_ppc64_elf_target (const struct bfd_target *targ)
7b53ace3
AM
2441{
2442 extern const bfd_target bfd_elf64_powerpc_vec;
2443 extern const bfd_target bfd_elf64_powerpcle_vec;
2444
2445 return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec;
2446}
2447
feee612b
AM
2448/* Fix bad default arch selected for a 64 bit input bfd when the
2449 default is 32 bit. */
2450
b34976b6 2451static bfd_boolean
4ce794b7 2452ppc64_elf_object_p (bfd *abfd)
feee612b
AM
2453{
2454 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2455 {
2456 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2457
2458 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2459 {
2460 /* Relies on arch after 32 bit default being 64 bit default. */
2461 abfd->arch_info = abfd->arch_info->next;
2462 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2463 }
2464 }
b34976b6 2465 return TRUE;
feee612b
AM
2466}
2467
d37c89e5
AM
2468/* Support for core dump NOTE sections. */
2469
2470static bfd_boolean
2471ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2472{
eea6121a 2473 size_t offset, size;
d37c89e5
AM
2474
2475 if (note->descsz != 504)
2476 return FALSE;
2477
2478 /* pr_cursig */
2479 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2480
2481 /* pr_pid */
2482 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2483
2484 /* pr_reg */
2485 offset = 112;
eea6121a 2486 size = 384;
d37c89e5
AM
2487
2488 /* Make a ".reg/999" section. */
2489 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2490 size, note->descpos + offset);
d37c89e5
AM
2491}
2492
2493static bfd_boolean
2494ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2495{
2496 if (note->descsz != 136)
2497 return FALSE;
2498
2499 elf_tdata (abfd)->core_program
2500 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2501 elf_tdata (abfd)->core_command
2502 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2503
2504 return TRUE;
2505}
2506
183e98be
AM
2507static char *
2508ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2509 ...)
2510{
2511 switch (note_type)
2512 {
2513 default:
2514 return NULL;
2515
2516 case NT_PRPSINFO:
2517 {
2518 char data[136];
2519 va_list ap;
2520
2521 va_start (ap, note_type);
2522 memset (data, 0, 40);
2523 strncpy (data + 40, va_arg (ap, const char *), 16);
2524 strncpy (data + 56, va_arg (ap, const char *), 80);
2525 va_end (ap);
2526 return elfcore_write_note (abfd, buf, bufsiz,
2527 "CORE", note_type, data, sizeof (data));
2528 }
2529
2530 case NT_PRSTATUS:
2531 {
2532 char data[504];
2533 va_list ap;
2534 long pid;
2535 int cursig;
2536 const void *greg;
2537
2538 va_start (ap, note_type);
2539 memset (data, 0, 112);
2540 pid = va_arg (ap, long);
2541 bfd_put_32 (abfd, pid, data + 32);
2542 cursig = va_arg (ap, int);
2543 bfd_put_16 (abfd, cursig, data + 12);
2544 greg = va_arg (ap, const void *);
2545 memcpy (data + 112, greg, 384);
2546 memset (data + 496, 0, 8);
2547 va_end (ap);
2548 return elfcore_write_note (abfd, buf, bufsiz,
2549 "CORE", note_type, data, sizeof (data));
2550 }
2551 }
2552}
2553
5bd4f169
AM
2554/* Merge backend specific data from an object file to the output
2555 object file when linking. */
2f6d9989 2556
b34976b6 2557static bfd_boolean
4ce794b7 2558ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2559{
5bd4f169
AM
2560 /* Check if we have the same endianess. */
2561 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2562 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM
2563 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2564 {
2565 const char *msg;
2566
2567 if (bfd_big_endian (ibfd))
d003868e 2568 msg = _("%B: compiled for a big endian system "
4ce794b7 2569 "and target is little endian");
5bd4f169 2570 else
d003868e 2571 msg = _("%B: compiled for a little endian system "
4ce794b7 2572 "and target is big endian");
5bd4f169 2573
d003868e 2574 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM
2575
2576 bfd_set_error (bfd_error_wrong_format);
b34976b6 2577 return FALSE;
5bd4f169
AM
2578 }
2579
b34976b6 2580 return TRUE;
5bd4f169 2581}
f0abc2a1 2582
5d35169e
AM
2583/* Add extra PPC sections. */
2584
b35d266b 2585static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2586{
0112cd26
NC
2587 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2588 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2589 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2590 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2591 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2592 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2593 { NULL, 0, 0, 0, 0 }
5d35169e
AM
2594};
2595
7c8fe5c4
AM
2596enum _ppc64_sec_type {
2597 sec_normal = 0,
2598 sec_opd = 1,
2599 sec_toc = 2
2600};
2601
f0abc2a1
AM
2602struct _ppc64_elf_section_data
2603{
2604 struct bfd_elf_section_data elf;
411e1bfb
AM
2605
2606 /* An array with one entry for each opd function descriptor. */
f0abc2a1
AM
2607 union
2608 {
411e1bfb 2609 /* Points to the function code section for local opd entries. */
7c8fe5c4 2610 asection **opd_func_sec;
411e1bfb 2611 /* After editing .opd, adjust references to opd local syms. */
7c8fe5c4
AM
2612 long *opd_adjust;
2613
2614 /* An array for toc sections, indexed by offset/8.
2615 Specifies the relocation symbol index used at a given toc offset. */
2616 unsigned *t_symndx;
2617 } u;
2618
2619 enum _ppc64_sec_type sec_type:2;
411e1bfb 2620
7c8fe5c4
AM
2621 /* Flag set when small branches are detected. Used to
2622 select suitable defaults for the stub group size. */
2623 unsigned int has_14bit_branch:1;
f0abc2a1
AM
2624};
2625
2626#define ppc64_elf_section_data(sec) \
411e1bfb 2627 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM
2628
2629static bfd_boolean
4ce794b7 2630ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2631{
f592407e
AM
2632 if (!sec->used_by_bfd)
2633 {
2634 struct _ppc64_elf_section_data *sdata;
2635 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2636
f592407e
AM
2637 sdata = bfd_zalloc (abfd, amt);
2638 if (sdata == NULL)
2639 return FALSE;
2640 sec->used_by_bfd = sdata;
2641 }
f0abc2a1
AM
2642
2643 return _bfd_elf_new_section_hook (abfd, sec);
2644}
4025353c
AM
2645
2646static void *
2647get_opd_info (asection * sec)
2648{
2649 if (sec != NULL
2650 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4
AM
2651 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
2652 return ppc64_elf_section_data (sec)->u.opd_adjust;
4025353c
AM
2653 return NULL;
2654}
90e3cdf2
JJ
2655\f
2656/* Parameters for the qsort hook. */
2657static asection *synthetic_opd;
2658static bfd_boolean synthetic_relocatable;
2659
699733f6 2660/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ
2661
2662static int
2663compare_symbols (const void *ap, const void *bp)
2664{
2665 const asymbol *a = * (const asymbol **) ap;
2666 const asymbol *b = * (const asymbol **) bp;
2667
699733f6
AM
2668 /* Section symbols first. */
2669 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2670 return -1;
699733f6 2671 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ
2672 return 1;
2673
699733f6 2674 /* then .opd symbols. */
90e3cdf2
JJ
2675 if (a->section == synthetic_opd && b->section != synthetic_opd)
2676 return -1;
2677 if (a->section != synthetic_opd && b->section == synthetic_opd)
2678 return 1;
2679
699733f6 2680 /* then other code symbols. */
90e3cdf2
JJ
2681 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2682 == (SEC_CODE | SEC_ALLOC)
2683 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2684 != (SEC_CODE | SEC_ALLOC))
2685 return -1;
2686
2687 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2688 != (SEC_CODE | SEC_ALLOC)
2689 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2690 == (SEC_CODE | SEC_ALLOC))
2691 return 1;
2692
2693 if (synthetic_relocatable)
2694 {
2695 if (a->section->id < b->section->id)
2696 return -1;
2697
2698 if (a->section->id > b->section->id)
2699 return 1;
2700 }
2701
2702 if (a->value + a->section->vma < b->value + b->section->vma)
2703 return -1;
2704
2705 if (a->value + a->section->vma > b->value + b->section->vma)
2706 return 1;
2707
4d35a0aa
AM
2708 /* For syms with the same value, prefer strong dynamic global function
2709 syms over other syms. */
2710 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2711 return -1;
2712
2713 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2714 return 1;
2715
2716 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2717 return -1;
2718
2719 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2720 return 1;
2721
2722 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2723 return -1;
2724
2725 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2726 return 1;
2727
2728 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2729 return -1;
2730
2731 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2732 return 1;
2733
90e3cdf2
JJ
2734 return 0;
2735}
2736
699733f6 2737/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2738
699733f6
AM
2739static asymbol *
2740sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2741{
699733f6 2742 long mid;
90e3cdf2 2743
699733f6
AM
2744 if (id == -1)
2745 {
2746 while (lo < hi)
2747 {
2748 mid = (lo + hi) >> 1;
2749 if (syms[mid]->value + syms[mid]->section->vma < value)
2750 lo = mid + 1;
2751 else if (syms[mid]->value + syms[mid]->section->vma > value)
2752 hi = mid;
2753 else
2754 return syms[mid];
2755 }
2756 }
2757 else
2758 {
2759 while (lo < hi)
2760 {
2761 mid = (lo + hi) >> 1;
2762 if (syms[mid]->section->id < id)
2763 lo = mid + 1;
2764 else if (syms[mid]->section->id > id)
2765 hi = mid;
2766 else if (syms[mid]->value < value)
2767 lo = mid + 1;
2768 else if (syms[mid]->value > value)
2769 hi = mid;
2770 else
2771 return syms[mid];
2772 }
2773 }
2774 return NULL;
90e3cdf2
JJ
2775}
2776
699733f6
AM
2777/* Create synthetic symbols, effectively restoring "dot-symbol" function
2778 entry syms. */
90e3cdf2
JJ
2779
2780static long
a7535cf3
AM
2781ppc64_elf_get_synthetic_symtab (bfd *abfd,
2782 long static_count, asymbol **static_syms,
2783 long dyn_count, asymbol **dyn_syms,
c9727e01 2784 asymbol **ret)
90e3cdf2
JJ
2785{
2786 asymbol *s;
699733f6
AM
2787 long i;
2788 long count;
90e3cdf2 2789 char *names;
a7535cf3 2790 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2791 asection *opd;
90e3cdf2 2792 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2793 asymbol **syms;
90e3cdf2
JJ
2794
2795 *ret = NULL;
2796
2797 opd = bfd_get_section_by_name (abfd, ".opd");
2798 if (opd == NULL)
2799 return 0;
2800
a7535cf3 2801 symcount = static_count;
c9727e01 2802 if (!relocatable)
a7535cf3 2803 symcount += dyn_count;
90e3cdf2 2804 if (symcount == 0)
c9727e01 2805 return 0;
90e3cdf2 2806
a7535cf3
AM
2807 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2808 if (syms == NULL)
7356fed5 2809 return -1;
a7535cf3
AM
2810
2811 if (!relocatable && static_count != 0 && dyn_count != 0)
2812 {
2813 /* Use both symbol tables. */
2814 memcpy (syms, static_syms, static_count * sizeof (*syms));
2815 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2816 }
2817 else if (!relocatable && static_count == 0)
2818 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2819 else
2820 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2821
90e3cdf2
JJ
2822 synthetic_opd = opd;
2823 synthetic_relocatable = relocatable;
595da8c5 2824 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2825
c9727e01
AM
2826 if (!relocatable && symcount > 1)
2827 {
2828 long j;
2829 /* Trim duplicate syms, since we may have merged the normal and
2830 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2831 different values, so trim any with the same value. */
c9727e01
AM
2832 for (i = 1, j = 1; i < symcount; ++i)
2833 if (syms[i - 1]->value + syms[i - 1]->section->vma
2834 != syms[i]->value + syms[i]->section->vma)
2835 syms[j++] = syms[i];
2836 symcount = j;
2837 }
2838
699733f6
AM
2839 i = 0;
2840 if (syms[i]->section == opd)
2841 ++i;
2842 codesecsym = i;
90e3cdf2 2843
699733f6
AM
2844 for (; i < symcount; ++i)
2845 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2846 != (SEC_CODE | SEC_ALLOC))
2847 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2848 break;
2849 codesecsymend = i;
90e3cdf2 2850
699733f6
AM
2851 for (; i < symcount; ++i)
2852 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2853 break;
2854 secsymend = i;
90e3cdf2 2855
699733f6
AM
2856 for (; i < symcount; ++i)
2857 if (syms[i]->section != opd)
2858 break;
2859 opdsymend = i;
90e3cdf2 2860
699733f6
AM
2861 for (; i < symcount; ++i)
2862 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2863 != (SEC_CODE | SEC_ALLOC))
2864 break;
2865 symcount = i;
2866
c9727e01 2867 count = 0;
699733f6 2868 if (opdsymend == secsymend)
c9727e01 2869 goto done;
90e3cdf2 2870
699733f6 2871 if (relocatable)
90e3cdf2 2872 {
699733f6
AM
2873 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2874 arelent *r;
2875 size_t size;
2876 long relcount;
90e3cdf2 2877
699733f6 2878 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2879 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2880 if (relcount == 0)
c9727e01 2881 goto done;
90e3cdf2 2882
7356fed5
AM
2883 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2884 {
2885 count = -1;
2886 goto done;
2887 }
2888
699733f6 2889 size = 0;
595da8c5 2890 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM
2891 {
2892 asymbol *sym;
90e3cdf2 2893
595da8c5 2894 while (r < opd->relocation + relcount
699733f6
AM
2895 && r->address < syms[i]->value + opd->vma)
2896 ++r;
90e3cdf2 2897
595da8c5 2898 if (r == opd->relocation + relcount)
699733f6 2899 break;
90e3cdf2 2900
699733f6
AM
2901 if (r->address != syms[i]->value + opd->vma)
2902 continue;
90e3cdf2 2903
699733f6
AM
2904 if (r->howto->type != R_PPC64_ADDR64)
2905 continue;
90e3cdf2 2906
699733f6
AM
2907 sym = *r->sym_ptr_ptr;
2908 if (!sym_exists_at (syms, opdsymend, symcount,
2909 sym->section->id, sym->value + r->addend))
2910 {
2911 ++count;
2912 size += sizeof (asymbol);
2913 size += strlen (syms[i]->name) + 2;
2914 }
2915 }
90e3cdf2 2916
699733f6
AM
2917 s = *ret = bfd_malloc (size);
2918 if (s == NULL)
2919 {
7356fed5 2920 count = -1;
c9727e01 2921 goto done;
699733f6 2922 }
90e3cdf2 2923
699733f6 2924 names = (char *) (s + count);
90e3cdf2 2925
595da8c5 2926 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2927 {
699733f6 2928 asymbol *sym;
90e3cdf2 2929
595da8c5 2930 while (r < opd->relocation + relcount
699733f6
AM
2931 && r->address < syms[i]->value + opd->vma)
2932 ++r;
90e3cdf2 2933
595da8c5 2934 if (r == opd->relocation + relcount)
699733f6
AM
2935 break;
2936
2937 if (r->address != syms[i]->value + opd->vma)
2938 continue;
2939
2940 if (r->howto->type != R_PPC64_ADDR64)
2941 continue;
90e3cdf2 2942
699733f6
AM
2943 sym = *r->sym_ptr_ptr;
2944 if (!sym_exists_at (syms, opdsymend, symcount,
2945 sym->section->id, sym->value + r->addend))
2946 {
2947 size_t len;
2948
2949 *s = *syms[i];
2950 s->section = sym->section;
2951 s->value = sym->value + r->addend;
2952 s->name = names;
2953 *names++ = '.';
2954 len = strlen (syms[i]->name);
2955 memcpy (names, syms[i]->name, len + 1);
2956 names += len + 1;
2957 s++;
2958 }
2959 }
2960 }
2961 else
90e3cdf2 2962 {
699733f6
AM
2963 bfd_byte *contents;
2964 size_t size;
90e3cdf2 2965
699733f6
AM
2966 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2967 {
2968 if (contents)
c9727e01
AM
2969 {
2970 free_contents_and_exit:
2971 free (contents);
2972 }
7356fed5 2973 count = -1;
c9727e01 2974 goto done;
699733f6 2975 }
90e3cdf2 2976
699733f6
AM
2977 size = 0;
2978 for (i = secsymend; i < opdsymend; ++i)
2979 {
2980 bfd_vma ent;
90e3cdf2 2981
699733f6
AM
2982 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2983 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2984 {
2985 ++count;
2986 size += sizeof (asymbol);
2987 size += strlen (syms[i]->name) + 2;
2988 }
2989 }
90e3cdf2 2990
699733f6
AM
2991 s = *ret = bfd_malloc (size);
2992 if (s == NULL)
7356fed5 2993 goto free_contents_and_exit;
90e3cdf2 2994
699733f6 2995 names = (char *) (s + count);
90e3cdf2 2996
699733f6 2997 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 2998 {
699733f6 2999 bfd_vma ent;
90e3cdf2 3000
699733f6
AM
3001 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3002 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3003 {
c9727e01 3004 long lo, hi;
699733f6 3005 size_t len;
c9727e01 3006 asection *sec = abfd->sections;
90e3cdf2 3007
699733f6
AM
3008 *s = *syms[i];
3009 lo = codesecsym;
3010 hi = codesecsymend;
3011 while (lo < hi)
3012 {
c9727e01 3013 long mid = (lo + hi) >> 1;
699733f6
AM
3014 if (syms[mid]->section->vma < ent)
3015 lo = mid + 1;
3016 else if (syms[mid]->section->vma > ent)
3017 hi = mid;
3018 else
c9727e01
AM
3019 {
3020 sec = syms[mid]->section;
3021 break;
3022 }
699733f6
AM
3023 }
3024
c9727e01 3025 if (lo >= hi && lo > codesecsym)
699733f6 3026 sec = syms[lo - 1]->section;
699733f6
AM
3027
3028 for (; sec != NULL; sec = sec->next)
3029 {
3030 if (sec->vma > ent)
3031 break;
3032 if ((sec->flags & SEC_ALLOC) == 0
3033 || (sec->flags & SEC_LOAD) == 0)
3034 break;
3035 if ((sec->flags & SEC_CODE) != 0)
3036 s->section = sec;
3037 }
3038 s->value = ent - s->section->vma;
3039 s->name = names;
3040 *names++ = '.';
3041 len = strlen (syms[i]->name);
3042 memcpy (names, syms[i]->name, len + 1);
3043 names += len + 1;
3044 s++;
90e3cdf2 3045 }
90e3cdf2 3046 }
699733f6 3047 free (contents);
90e3cdf2
JJ
3048 }
3049
c9727e01 3050 done:
a7535cf3 3051 free (syms);
90e3cdf2
JJ
3052 return count;
3053}
5bd4f169 3054\f
65f38f15
AM
3055/* The following functions are specific to the ELF linker, while
3056 functions above are used generally. Those named ppc64_elf_* are
3057 called by the main ELF linker code. They appear in this file more
3058 or less in the order in which they are called. eg.
3059 ppc64_elf_check_relocs is called early in the link process,
3060 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM
3061 called.
3062
3063 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3064 functions have both a function code symbol and a function descriptor
3065 symbol. A call to foo in a relocatable object file looks like:
3066
3067 . .text
3068 . x:
3069 . bl .foo
3070 . nop
3071
3072 The function definition in another object file might be:
3073
3074 . .section .opd
3075 . foo: .quad .foo
3076 . .quad .TOC.@tocbase
3077 . .quad 0
3078 .
3079 . .text
3080 . .foo: blr
3081
3082 When the linker resolves the call during a static link, the branch
3083 unsurprisingly just goes to .foo and the .opd information is unused.
3084 If the function definition is in a shared library, things are a little
3085 different: The call goes via a plt call stub, the opd information gets
3086 copied to the plt, and the linker patches the nop.
3087
3088 . x:
3089 . bl .foo_stub
3090 . ld 2,40(1)
3091 .
3092 .
3093 . .foo_stub:
3094 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3095 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM
3096 . std 2,40(1) # this is the general idea
3097 . ld 11,0(12)
3098 . ld 2,8(12)
3099 . mtctr 11
3100 . ld 11,16(12)
3101 . bctr
3102 .
3103 . .section .plt
3104 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3105
3106 The "reloc ()" notation is supposed to indicate that the linker emits
3107 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3108 copying.
3109
3110 What are the difficulties here? Well, firstly, the relocations
3111 examined by the linker in check_relocs are against the function code
3112 sym .foo, while the dynamic relocation in the plt is emitted against
3113 the function descriptor symbol, foo. Somewhere along the line, we need
3114 to carefully copy dynamic link information from one symbol to the other.
3115 Secondly, the generic part of the elf linker will make .foo a dynamic
3116 symbol as is normal for most other backends. We need foo dynamic
3117 instead, at least for an application final link. However, when
3118 creating a shared library containing foo, we need to have both symbols
3119 dynamic so that references to .foo are satisfied during the early
3120 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM
3121 definition from some other object, eg. a static library.
3122
3123 Update: As of August 2004, we support a new convention. Function
3124 calls may use the function descriptor symbol, ie. "bl foo". This
3125 behaves exactly as "bl .foo". */
65f38f15
AM
3126
3127/* The linker needs to keep track of the number of relocs that it
3128 decides to copy as dynamic relocs in check_relocs for each symbol.
3129 This is so that it can later discard them if they are found to be
3130 unnecessary. We store the information in a field extending the
3131 regular ELF linker hash table. */
3132
3133struct ppc_dyn_relocs
3134{
3135 struct ppc_dyn_relocs *next;
3136
3137 /* The input section of the reloc. */
3138 asection *sec;
3139
3140 /* Total number of relocs copied for the input section. */
3141 bfd_size_type count;
3142
3143 /* Number of pc-relative relocs copied for the input section. */
3144 bfd_size_type pc_count;
3145};
3146
411e1bfb
AM
3147/* Track GOT entries needed for a given symbol. We might need more
3148 than one got entry per symbol. */
3149struct got_entry
3150{
3151 struct got_entry *next;
3152
e7b938ca 3153 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM
3154 bfd_vma addend;
3155
e717da7e
AM
3156 /* Unlike other ELF targets, we use separate GOT entries for the same
3157 symbol referenced from different input files. This is to support
3158 automatic multiple TOC/GOT sections, where the TOC base can vary
3159 from one input file to another.
3160
3161 Point to the BFD owning this GOT entry. */
3162 bfd *owner;
3163
3164 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3165 TLS_TPREL or TLS_DTPREL for tls entries. */
3166 char tls_type;
3167
e7b938ca 3168 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM
3169 union
3170 {
3171 bfd_signed_vma refcount;
3172 bfd_vma offset;
3173 } got;
411e1bfb
AM
3174};
3175
3176/* The same for PLT. */
3177struct plt_entry
3178{
3179 struct plt_entry *next;
3180
3181 bfd_vma addend;
3182
3183 union
3184 {
3185 bfd_signed_vma refcount;
3186 bfd_vma offset;
3187 } plt;
3188};
3189
65f38f15 3190/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM
3191 selects those that must be copied when linking a shared library,
3192 even when the symbol is local. */
65f38f15 3193
411e1bfb 3194#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM
3195 ((RTYPE) != R_PPC64_REL32 \
3196 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3197 && (RTYPE) != R_PPC64_REL30)
65f38f15 3198
f4656909
AM
3199/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3200 copying dynamic variables from a shared lib into an app's dynbss
3201 section, and instead use a dynamic relocation to point into the
5d35169e
AM
3202 shared lib. With code that gcc generates, it's vital that this be
3203 enabled; In the PowerPC64 ABI, the address of a function is actually
3204 the address of a function descriptor, which resides in the .opd
3205 section. gcc uses the descriptor directly rather than going via the
3206 GOT as some other ABI's do, which means that initialized function
3207 pointers must reference the descriptor. Thus, a function pointer
3208 initialized to the address of a function in a shared library will
3209 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3210 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM
3211 presents a problem as a plt entry for that function is also
3212 initialized from the function descriptor symbol and the copy reloc
3213 may not be initialized first. */
a23b6845 3214#define ELIMINATE_COPY_RELOCS 1
f4656909 3215
721956f4
AM
3216/* Section name for stubs is the associated section name plus this
3217 string. */
3218#define STUB_SUFFIX ".stub"
3219
3220/* Linker stubs.
3221 ppc_stub_long_branch:
3222 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3223 destination, but a 24 bit branch in a stub section will reach.
3224 . b dest
3225
3226 ppc_stub_plt_branch:
3227 Similar to the above, but a 24 bit branch in the stub section won't
3228 reach its destination.
87e226ce
AM
3229 . addis %r12,%r2,xxx@toc@ha
3230 . ld %r11,xxx@toc@l(%r12)
721956f4
AM
3231 . mtctr %r11
3232 . bctr
3233
3234 ppc_stub_plt_call:
2c66dc6c
AM
3235 Used to call a function in a shared library. If it so happens that
3236 the plt entry referenced crosses a 64k boundary, then an extra
3237 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3238 xxx+16 as appropriate.
87e226ce 3239 . addis %r12,%r2,xxx@toc@ha
721956f4 3240 . std %r2,40(%r1)
87e226ce
AM
3241 . ld %r11,xxx+0@toc@l(%r12)
3242 . ld %r2,xxx+8@toc@l(%r12)
721956f4 3243 . mtctr %r11
87e226ce 3244 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3245 . bctr
ad8e1ba5
AM
3246
3247 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3248 code to adjust the value and save r2 to support multiple toc sections.
3249 A ppc_stub_long_branch with an r2 offset looks like:
3250 . std %r2,40(%r1)
3251 . addis %r2,%r2,off@ha
3252 . addi %r2,%r2,off@l
3253 . b dest
3254
3255 A ppc_stub_plt_branch with an r2 offset looks like:
3256 . std %r2,40(%r1)
3257 . addis %r12,%r2,xxx@toc@ha
3258 . ld %r11,xxx@toc@l(%r12)
3259 . addis %r2,%r2,off@ha
3260 . addi %r2,%r2,off@l
3261 . mtctr %r11
3262 . bctr
721956f4
AM
3263*/
3264
3265enum ppc_stub_type {
3266 ppc_stub_none,
3267 ppc_stub_long_branch,
ad8e1ba5 3268 ppc_stub_long_branch_r2off,
721956f4 3269 ppc_stub_plt_branch,
ad8e1ba5 3270 ppc_stub_plt_branch_r2off,
721956f4
AM
3271 ppc_stub_plt_call
3272};
3273
3274struct ppc_stub_hash_entry {
3275
3276 /* Base hash table entry structure. */
3277 struct bfd_hash_entry root;
3278
ad8e1ba5
AM
3279 enum ppc_stub_type stub_type;
3280
721956f4
AM
3281 /* The stub section. */
3282 asection *stub_sec;
3283
3284 /* Offset within stub_sec of the beginning of this stub. */
3285 bfd_vma stub_offset;
3286
3287 /* Given the symbol's value and its section we can determine its final
3288 value when building the stubs (so the stub knows where to jump. */
3289 bfd_vma target_value;
3290 asection *target_section;
3291
721956f4
AM
3292 /* The symbol table entry, if any, that this was derived from. */
3293 struct ppc_link_hash_entry *h;
3294
411e1bfb
AM
3295 /* And the reloc addend that this was derived from. */
3296 bfd_vma addend;
3297
721956f4
AM
3298 /* Where this stub is being called from, or, in the case of combined
3299 stub sections, the first input section in the group. */
3300 asection *id_sec;
3301};
3302
3303struct ppc_branch_hash_entry {
3304
3305 /* Base hash table entry structure. */
3306 struct bfd_hash_entry root;
3307
c456f082 3308 /* Offset within branch lookup table. */
721956f4
AM
3309 unsigned int offset;
3310
3311 /* Generation marker. */
3312 unsigned int iter;
3313};
65f38f15
AM
3314
3315struct ppc_link_hash_entry
3316{
3317 struct elf_link_hash_entry elf;
3318
b3fac117
AM
3319 union {
3320 /* A pointer to the most recently used stub hash entry against this
3321 symbol. */
3322 struct ppc_stub_hash_entry *stub_cache;
3323
3324 /* A pointer to the next symbol starting with a '.' */
3325 struct ppc_link_hash_entry *next_dot_sym;
3326 } u;
721956f4 3327
65f38f15
AM
3328 /* Track dynamic relocs copied for this symbol. */
3329 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3330
721956f4 3331 /* Link between function code and descriptor symbols. */
34814b9f 3332 struct ppc_link_hash_entry *oh;
721956f4 3333
e86ce104
AM
3334 /* Flag function code and descriptor symbols. */
3335 unsigned int is_func:1;
3336 unsigned int is_func_descriptor:1;
908b32fc 3337 unsigned int fake:1;
411e1bfb 3338
c5614fa4
AM
3339 /* Whether global opd/toc sym has been adjusted or not.
3340 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3341 should be set for all globals defined in any opd/toc section. */
754021d0
AM
3342 unsigned int adjust_done:1;
3343
99877b66
AM
3344 /* Set if we twiddled this symbol to weak at some stage. */
3345 unsigned int was_undefined:1;
3346
411e1bfb 3347 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM
3348 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3349 corresponding relocs are encountered during check_relocs.
3350 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3351 indicate the corresponding GOT entry type is not needed.
3352 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3353 a TPREL one. We use a separate flag rather than setting TPREL
3354 just for convenience in distinguishing the two cases. */
3355#define TLS_GD 1 /* GD reloc. */
3356#define TLS_LD 2 /* LD reloc. */
3357#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3358#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3359#define TLS_TLS 16 /* Any TLS reloc. */
3360#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3361#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3362 char tls_mask;
65f38f15
AM
3363};
3364
3365/* ppc64 ELF linker hash table. */
3366
3367struct ppc_link_hash_table
3368{
3369 struct elf_link_hash_table elf;
3370
721956f4
AM
3371 /* The stub hash table. */
3372 struct bfd_hash_table stub_hash_table;
3373
3374 /* Another hash table for plt_branch stubs. */
3375 struct bfd_hash_table branch_hash_table;
3376
3377 /* Linker stub bfd. */
3378 bfd *stub_bfd;
3379
3380 /* Linker call-backs. */
4ce794b7
AM
3381 asection * (*add_stub_section) (const char *, asection *);
3382 void (*layout_sections_again) (void);
721956f4
AM
3383
3384 /* Array to keep track of which stub sections have been created, and
3385 information on stub grouping. */
3386 struct map_stub {
3387 /* This is the section to which stubs in the group will be attached. */
3388 asection *link_sec;
3389 /* The stub section. */
3390 asection *stub_sec;
ad8e1ba5
AM
3391 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3392 bfd_vma toc_off;
721956f4
AM
3393 } *stub_group;
3394
ad8e1ba5
AM
3395 /* Temp used when calculating TOC pointers. */
3396 bfd_vma toc_curr;
3397
8f3bab57
AM
3398 /* Highest input section id. */
3399 int top_id;
3400
734b6cf9
AM
3401 /* Highest output section index. */
3402 int top_index;
3403
b3fac117
AM
3404 /* Used when adding symbols. */
3405 struct ppc_link_hash_entry *dot_syms;
3406
734b6cf9
AM
3407 /* List of input sections for each output section. */
3408 asection **input_list;
721956f4 3409
65f38f15 3410 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3411 asection *got;
4ce794b7
AM
3412 asection *plt;
3413 asection *relplt;
3414 asection *dynbss;
3415 asection *relbss;
3416 asection *glink;
82bd7b59 3417 asection *sfpr;
4ce794b7
AM
3418 asection *brlt;
3419 asection *relbrlt;
ec338859 3420
8387904d
AM
3421 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3422 struct ppc_link_hash_entry *tls_get_addr;
3423 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3424
9b5ecbd0
AM
3425 /* Statistics. */
3426 unsigned long stub_count[ppc_stub_plt_call];
3427
ee75fd95
AM
3428 /* Number of stubs against global syms. */
3429 unsigned long stub_globals;
3430
ad8e1ba5 3431 /* Set if we should emit symbols for stubs. */
99877b66 3432 unsigned int emit_stub_syms:1;
ad8e1ba5 3433
4c52953f
AM
3434 /* Support for multiple toc sections. */
3435 unsigned int no_multi_toc:1;
3436 unsigned int multi_toc_needed:1;
3437
5d1634d7 3438 /* Set on error. */
99877b66 3439 unsigned int stub_error:1;
721956f4 3440
99877b66
AM
3441 /* Temp used by ppc64_elf_check_directives. */
3442 unsigned int twiddled_syms:1;
721956f4
AM
3443
3444 /* Incremented every time we size stubs. */
3445 unsigned int stub_iteration;
5d1634d7 3446
ec338859
AM
3447 /* Small local sym to section mapping cache. */
3448 struct sym_sec_cache sym_sec;
65f38f15
AM
3449};
3450
4c52953f
AM
3451/* Rename some of the generic section flags to better document how they
3452 are used here. */
3453#define has_toc_reloc has_gp_reloc
3454#define makes_toc_func_call need_finalize_relax
3455#define call_check_in_progress reloc_done
3456
65f38f15
AM
3457/* Get the ppc64 ELF linker hash table from a link_info structure. */
3458
3459#define ppc_hash_table(p) \
3460 ((struct ppc_link_hash_table *) ((p)->hash))
3461
721956f4
AM
3462#define ppc_stub_hash_lookup(table, string, create, copy) \
3463 ((struct ppc_stub_hash_entry *) \
3464 bfd_hash_lookup ((table), (string), (create), (copy)))
3465
3466#define ppc_branch_hash_lookup(table, string, create, copy) \
3467 ((struct ppc_branch_hash_entry *) \
3468 bfd_hash_lookup ((table), (string), (create), (copy)))
3469
3470/* Create an entry in the stub hash table. */
3471
3472static struct bfd_hash_entry *
4ce794b7
AM
3473stub_hash_newfunc (struct bfd_hash_entry *entry,
3474 struct bfd_hash_table *table,
3475 const char *string)
721956f4
AM
3476{
3477 /* Allocate the structure if it has not already been allocated by a
3478 subclass. */
3479 if (entry == NULL)
3480 {
3481 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3482 if (entry == NULL)
3483 return entry;
3484 }
3485
3486 /* Call the allocation method of the superclass. */
3487 entry = bfd_hash_newfunc (entry, table, string);
3488 if (entry != NULL)
3489 {
3490 struct ppc_stub_hash_entry *eh;
3491
3492 /* Initialize the local fields. */
3493 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3494 eh->stub_type = ppc_stub_none;
721956f4
AM
3495 eh->stub_sec = NULL;
3496 eh->stub_offset = 0;
3497 eh->target_value = 0;
3498 eh->target_section = NULL;
721956f4
AM
3499 eh->h = NULL;
3500 eh->id_sec = NULL;
3501 }
3502
3503 return entry;
3504}
3505
3506/* Create an entry in the branch hash table. */
3507
3508static struct bfd_hash_entry *
4ce794b7
AM
3509branch_hash_newfunc (struct bfd_hash_entry *entry,
3510 struct bfd_hash_table *table,
3511 const char *string)
721956f4
AM
3512{
3513 /* Allocate the structure if it has not already been allocated by a
3514 subclass. */
3515 if (entry == NULL)
3516 {
3517 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3518 if (entry == NULL)
3519 return entry;
3520 }
3521
3522 /* Call the allocation method of the superclass. */
3523 entry = bfd_hash_newfunc (entry, table, string);
3524 if (entry != NULL)
3525 {
3526 struct ppc_branch_hash_entry *eh;
3527
3528 /* Initialize the local fields. */
3529 eh = (struct ppc_branch_hash_entry *) entry;
3530 eh->offset = 0;
3531 eh->iter = 0;
3532 }
3533
3534 return entry;
3535}
3536
65f38f15
AM
3537/* Create an entry in a ppc64 ELF linker hash table. */
3538
3539static struct bfd_hash_entry *
4ce794b7
AM
3540link_hash_newfunc (struct bfd_hash_entry *entry,
3541 struct bfd_hash_table *table,
3542 const char *string)
65f38f15
AM
3543{
3544 /* Allocate the structure if it has not already been allocated by a
3545 subclass. */
3546 if (entry == NULL)
3547 {
3548 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3549 if (entry == NULL)
3550 return entry;
3551 }
3552
3553 /* Call the allocation method of the superclass. */
3554 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3555 if (entry != NULL)
3556 {
3557 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3558
b3fac117 3559 memset (&eh->u.stub_cache, 0,
908b32fc 3560 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM
3561 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3562
3563 /* When making function calls, old ABI code references function entry
3564 points (dot symbols), while new ABI code references the function
3565 descriptor symbol. We need to make any combination of reference and
3566 definition work together, without breaking archive linking.
3567
3568 For a defined function "foo" and an undefined call to "bar":
3569 An old object defines "foo" and ".foo", references ".bar" (possibly
3570 "bar" too).
3571 A new object defines "foo" and references "bar".
3572
3573 A new object thus has no problem with its undefined symbols being
3574 satisfied by definitions in an old object. On the other hand, the
3575 old object won't have ".bar" satisfied by a new object.
3576
3577 Keep a list of newly added dot-symbols. */
3578
3579 if (string[0] == '.')
3580 {
3581 struct ppc_link_hash_table *htab;
3582
3583 htab = (struct ppc_link_hash_table *) table;
3584 eh->u.next_dot_sym = htab->dot_syms;
3585 htab->dot_syms = eh;
3586 }
65f38f15
AM
3587 }
3588
3589 return entry;
3590}
3591
3592/* Create a ppc64 ELF linker hash table. */
3593
3594static struct bfd_link_hash_table *
4ce794b7 3595ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM
3596{
3597 struct ppc_link_hash_table *htab;
3598 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3599
4ce794b7 3600 htab = bfd_zmalloc (amt);
65f38f15
AM
3601 if (htab == NULL)
3602 return NULL;
3603
66eb6687
AM
3604 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3605 sizeof (struct ppc_link_hash_entry)))
65f38f15 3606 {
e2d34d7d 3607 free (htab);
65f38f15
AM
3608 return NULL;
3609 }
3610
721956f4 3611 /* Init the stub hash table too. */
66eb6687
AM
3612 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3613 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM
3614 return NULL;
3615
3616 /* And the branch hash table. */
66eb6687
AM
3617 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3618 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM
3619 return NULL;
3620
3254fd24
AM
3621 /* Initializing two fields of the union is just cosmetic. We really
3622 only care about glist, but when compiled on a 32-bit host the
3623 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3624 debugger inspection of these fields look nicer. */
a6aa5195
AM
3625 htab->elf.init_got_refcount.refcount = 0;
3626 htab->elf.init_got_refcount.glist = NULL;
3627 htab->elf.init_plt_refcount.refcount = 0;
3628 htab->elf.init_plt_refcount.glist = NULL;
3629 htab->elf.init_got_offset.offset = 0;
3630 htab->elf.init_got_offset.glist = NULL;
3631 htab->elf.init_plt_offset.offset = 0;
3632 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3633
65f38f15
AM
3634 return &htab->elf.root;
3635}
3636
721956f4
AM
3637/* Free the derived linker hash table. */
3638
3639static void
4ce794b7 3640ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM
3641{
3642 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3643
3644 bfd_hash_table_free (&ret->stub_hash_table);
3645 bfd_hash_table_free (&ret->branch_hash_table);
3646 _bfd_generic_link_hash_table_free (hash);
3647}
3648
e717da7e
AM
3649/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3650
3651void
3652ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3653{
3654 struct ppc_link_hash_table *htab;
3655
3656 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3657
3658/* Always hook our dynamic sections into the first bfd, which is the
3659 linker created stub bfd. This ensures that the GOT header is at
3660 the start of the output TOC section. */
3661 htab = ppc_hash_table (info);
3662 htab->stub_bfd = abfd;
3663 htab->elf.dynobj = abfd;
3664}
3665
721956f4
AM
3666/* Build a name for an entry in the stub hash table. */
3667
3668static char *
4ce794b7
AM
3669ppc_stub_name (const asection *input_section,
3670 const asection *sym_sec,
3671 const struct ppc_link_hash_entry *h,
3672 const Elf_Internal_Rela *rel)
721956f4
AM
3673{
3674 char *stub_name;
3675 bfd_size_type len;
3676
3677 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3678 offsets from a sym as a branch target? In fact, we could
3679 probably assume the addend is always zero. */
3680 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3681
3682 if (h)
3683 {
3684 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3685 stub_name = bfd_malloc (len);
46de2a7c
AM
3686 if (stub_name == NULL)
3687 return stub_name;
3688
3689 sprintf (stub_name, "%08x.%s+%x",
3690 input_section->id & 0xffffffff,
3691 h->elf.root.root.string,
3692 (int) rel->r_addend & 0xffffffff);
721956f4
AM
3693 }
3694 else
3695 {
ad8e1ba5 3696 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3697 stub_name = bfd_malloc (len);
46de2a7c
AM
3698 if (stub_name == NULL)
3699 return stub_name;
3700
3701 sprintf (stub_name, "%08x.%x:%x+%x",
3702 input_section->id & 0xffffffff,
3703 sym_sec->id & 0xffffffff,
3704 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3705 (int) rel->r_addend & 0xffffffff);
721956f4 3706 }
ee75fd95
AM
3707 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3708 stub_name[len - 2] = 0;
721956f4
AM
3709 return stub_name;
3710}
3711
3712/* Look up an entry in the stub hash. Stub entries are cached because
3713 creating the stub name takes a bit of time. */
3714
3715static struct ppc_stub_hash_entry *
4ce794b7
AM
3716ppc_get_stub_entry (const asection *input_section,
3717 const asection *sym_sec,
039b3fef 3718 struct ppc_link_hash_entry *h,
4ce794b7
AM
3719 const Elf_Internal_Rela *rel,
3720 struct ppc_link_hash_table *htab)
721956f4
AM
3721{
3722 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM
3723 const asection *id_sec;
3724
3725 /* If this input section is part of a group of sections sharing one
3726 stub section, then use the id of the first section in the group.
3727 Stub names need to include a section id, as there may well be
3728 more than one stub used to reach say, printf, and we need to
3729 distinguish between them. */
3730 id_sec = htab->stub_group[input_section->id].link_sec;
3731
b3fac117
AM
3732 if (h != NULL && h->u.stub_cache != NULL
3733 && h->u.stub_cache->h == h
3734 && h->u.stub_cache->id_sec == id_sec)
721956f4 3735 {
b3fac117 3736 stub_entry = h->u.stub_cache;
721956f4
AM
3737 }
3738 else
3739 {
3740 char *stub_name;
3741
3742 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3743 if (stub_name == NULL)
3744 return NULL;
3745
3746 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3747 stub_name, FALSE, FALSE);
721956f4 3748 if (h != NULL)
b3fac117 3749 h->u.stub_cache = stub_entry;
721956f4
AM
3750
3751 free (stub_name);
3752 }
3753
3754 return stub_entry;
3755}
3756
3757/* Add a new stub entry to the stub hash. Not all fields of the new
3758 stub entry are initialised. */
3759
3760static struct ppc_stub_hash_entry *
4ce794b7
AM
3761ppc_add_stub (const char *stub_name,
3762 asection *section,
3763 struct ppc_link_hash_table *htab)
721956f4
AM
3764{
3765 asection *link_sec;
3766 asection *stub_sec;
3767 struct ppc_stub_hash_entry *stub_entry;
3768
3769 link_sec = htab->stub_group[section->id].link_sec;
3770 stub_sec = htab->stub_group[section->id].stub_sec;
3771 if (stub_sec == NULL)
3772 {
3773 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3774 if (stub_sec == NULL)
3775 {
d4c88bbb 3776 size_t namelen;
721956f4
AM
3777 bfd_size_type len;
3778 char *s_name;
3779
d4c88bbb
AM
3780 namelen = strlen (link_sec->name);
3781 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM
3782 s_name = bfd_alloc (htab->stub_bfd, len);
3783 if (s_name == NULL)
3784 return NULL;
3785
d4c88bbb
AM
3786 memcpy (s_name, link_sec->name, namelen);
3787 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM
3788 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3789 if (stub_sec == NULL)
3790 return NULL;
3791 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3792 }
3793 htab->stub_group[section->id].stub_sec = stub_sec;
3794 }
3795
3796 /* Enter this entry into the linker stub hash table. */
3797 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3798 TRUE, FALSE);
721956f4
AM
3799 if (stub_entry == NULL)
3800 {
d003868e
AM
3801 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3802 section->owner, stub_name);
721956f4
AM
3803 return NULL;
3804 }
3805
3806 stub_entry->stub_sec = stub_sec;
3807 stub_entry->stub_offset = 0;
3808 stub_entry->id_sec = link_sec;
3809 return stub_entry;
3810}
3811
82bd7b59
AM
3812/* Create sections for linker generated code. */
3813
b34976b6 3814static bfd_boolean
4ce794b7 3815create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM
3816{
3817 struct ppc_link_hash_table *htab;
3818 flagword flags;
3819
3820 htab = ppc_hash_table (info);
3821
3822 /* Create .sfpr for code to save and restore fp regs. */
3823 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3824 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L
3825 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3826 flags);
82bd7b59 3827 if (htab->sfpr == NULL
82bd7b59 3828 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3829 return FALSE;
82bd7b59 3830
721956f4 3831 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L
3832 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3833 flags);
4ce794b7 3834 if (htab->glink == NULL
ee4bf8d2 3835 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 3836 return FALSE;
82bd7b59 3837
c456f082 3838 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM
3839 flags = (SEC_ALLOC | SEC_LOAD
3840 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3841 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3842 flags);
4ce794b7 3843 if (htab->brlt == NULL
4ce794b7 3844 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3845 return FALSE;
721956f4 3846
e4e0193e 3847 if (!info->shared)
c456f082
AM
3848 return TRUE;
3849
e4e0193e
AM
3850 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3851 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3852 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3853 ".rela.branch_lt",
3854 flags);
c456f082
AM
3855 if (!htab->relbrlt
3856 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3857 return FALSE;
3858
b34976b6 3859 return TRUE;
82bd7b59
AM
3860}
3861
e717da7e
AM
3862/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3863 not already done. */
65f38f15 3864
b34976b6 3865static bfd_boolean
e717da7e 3866create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3867{
e717da7e
AM
3868 asection *got, *relgot;
3869 flagword flags;
3870 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3871
4ce794b7 3872 if (!htab->got)
e717da7e
AM
3873 {
3874 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3875 return FALSE;
3876
3877 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3878 if (!htab->got)
3879 abort ();
3880 }
3881
3882 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3883 | SEC_LINKER_CREATED);
3884
c456f082 3885 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3886 if (!got
e717da7e
AM
3887 || !bfd_set_section_alignment (abfd, got, 3))
3888 return FALSE;
65f38f15 3889
c456f082
AM
3890 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3891 flags | SEC_READONLY);
e717da7e 3892 if (!relgot
e717da7e 3893 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3894 return FALSE;
e717da7e
AM
3895
3896 ppc64_elf_tdata (abfd)->got = got;
3897 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3898 return TRUE;
65f38f15 3899}
5bd4f169 3900
82bd7b59 3901/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3902
b34976b6 3903static bfd_boolean
4ce794b7 3904ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3905{
65f38f15 3906 struct ppc_link_hash_table *htab;
5bd4f169 3907
65f38f15 3908 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3909 return FALSE;
65f38f15 3910
e717da7e
AM
3911 htab = ppc_hash_table (info);
3912 if (!htab->got)
3913 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM
3914 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3915 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3916 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3917 if (!info->shared)
4ce794b7 3918 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3919
e717da7e 3920 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3921 || (!info->shared && !htab->relbss))
65f38f15
AM
3922 abort ();
3923
b34976b6 3924 return TRUE;
5bd4f169
AM
3925}
3926
40d16e0b
AM
3927/* Merge PLT info on FROM with that on TO. */
3928
3929static void
3930move_plt_plist (struct ppc_link_hash_entry *from,
3931 struct ppc_link_hash_entry *to)
3932{
3933 if (from->elf.plt.plist != NULL)
3934 {
3935 if (to->elf.plt.plist != NULL)
3936 {
3937 struct plt_entry **entp;
3938 struct plt_entry *ent;
3939
3940 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3941 {
3942 struct plt_entry *dent;
3943
3944 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3945 if (dent->addend == ent->addend)
3946 {
3947 dent->plt.refcount += ent->plt.refcount;
3948 *entp = ent->next;
3949 break;
3950 }
3951 if (dent == NULL)
3952 entp = &ent->next;
3953 }
3954 *entp = to->elf.plt.plist;
3955 }
3956
3957 to->elf.plt.plist = from->elf.plt.plist;
3958 from->elf.plt.plist = NULL;
3959 }
3960}
3961
65f38f15
AM
3962/* Copy the extra info we tack onto an elf_link_hash_entry. */
3963
3964static void
fcfa13d2
AM
3965ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3966 struct elf_link_hash_entry *dir,
3967 struct elf_link_hash_entry *ind)
65f38f15
AM
3968{
3969 struct ppc_link_hash_entry *edir, *eind;
3970
3971 edir = (struct ppc_link_hash_entry *) dir;
3972 eind = (struct ppc_link_hash_entry *) ind;
3973
411e1bfb 3974 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3975 if (eind->dyn_relocs != NULL)
65f38f15 3976 {
bbd7ec4a
AM
3977 if (edir->dyn_relocs != NULL)
3978 {
3979 struct ppc_dyn_relocs **pp;
3980 struct ppc_dyn_relocs *p;
3981
fcfa13d2 3982 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
3983 list. Merge any entries against the same section. */
3984 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3985 {
3986 struct ppc_dyn_relocs *q;
3987
3988 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3989 if (q->sec == p->sec)
3990 {
3991 q->pc_count += p->pc_count;
3992 q->count += p->count;
3993 *pp = p->next;
3994 break;
3995 }
3996 if (q == NULL)
3997 pp = &p->next;
3998 }
3999 *pp = edir->dyn_relocs;
4000 }
4001
65f38f15
AM
4002 edir->dyn_relocs = eind->dyn_relocs;
4003 eind->dyn_relocs = NULL;
4004 }
65f38f15 4005
6349e628
AM
4006 edir->is_func |= eind->is_func;
4007 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4008 edir->tls_mask |= eind->tls_mask;
6349e628 4009
81848ca0 4010 /* If called to transfer flags for a weakdef during processing
f5385ebf 4011 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4012 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM
4013 if (!(ELIMINATE_COPY_RELOCS
4014 && eind->elf.root.type != bfd_link_hash_indirect
4015 && edir->elf.dynamic_adjusted))
4016 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4017
f5385ebf
AM
4018 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4019 edir->elf.ref_regular |= eind->elf.ref_regular;
4020 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4021 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM
4022
4023 /* If we were called to copy over info for a weak sym, that's all. */
4024 if (eind->elf.root.type != bfd_link_hash_indirect)
4025 return;
4026
81848ca0
AM
4027 /* Copy over got entries that we may have already seen to the
4028 symbol which just became indirect. */
411e1bfb
AM
4029 if (eind->elf.got.glist != NULL)
4030 {
4031 if (edir->elf.got.glist != NULL)
4032 {
4033 struct got_entry **entp;
4034 struct got_entry *ent;
4035
4036 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4037 {
4038 struct got_entry *dent;
4039
4040 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4041 if (dent->addend == ent->addend
e717da7e 4042 && dent->owner == ent->owner
411e1bfb
AM
4043 && dent->tls_type == ent->tls_type)
4044 {
4045 dent->got.refcount += ent->got.refcount;
4046 *entp = ent->next;
4047 break;
4048 }
4049 if (dent == NULL)
4050 entp = &ent->next;
4051 }
4052 *entp = edir->elf.got.glist;
4053 }
4054
4055 edir->elf.got.glist = eind->elf.got.glist;
4056 eind->elf.got.glist = NULL;
4057 }
4058
4059 /* And plt entries. */
40d16e0b 4060 move_plt_plist (eind, edir);
411e1bfb 4061
fcfa13d2 4062 if (eind->elf.dynindx != -1)
411e1bfb 4063 {
fcfa13d2
AM
4064 if (edir->elf.dynindx != -1)
4065 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4066 edir->elf.dynstr_index);
411e1bfb
AM
4067 edir->elf.dynindx = eind->elf.dynindx;
4068 edir->elf.dynstr_index = eind->elf.dynstr_index;
4069 eind->elf.dynindx = -1;
4070 eind->elf.dynstr_index = 0;
4071 }
411e1bfb
AM
4072}
4073
8387904d
AM
4074/* Find the function descriptor hash entry from the given function code
4075 hash entry FH. Link the entries via their OH fields. */
4076
4077static struct ppc_link_hash_entry *
4078get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4079{
4080 struct ppc_link_hash_entry *fdh = fh->oh;
4081
4082 if (fdh == NULL)
4083 {
4084 const char *fd_name = fh->elf.root.root.string + 1;
4085
4086 fdh = (struct ppc_link_hash_entry *)
4087 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4088 if (fdh != NULL)
4089 {
4090 fdh->is_func_descriptor = 1;
4091 fdh->oh = fh;
4092 fh->is_func = 1;
4093 fh->oh = fdh;
4094 }
4095 }
4096
4097 return fdh;
4098}
4099
bb700d78
AM
4100/* Make a fake function descriptor sym for the code sym FH. */
4101
4102static struct ppc_link_hash_entry *
4103make_fdh (struct bfd_link_info *info,
908b32fc 4104 struct ppc_link_hash_entry *fh)
bb700d78
AM
4105{
4106 bfd *abfd;
4107 asymbol *newsym;
4108 struct bfd_link_hash_entry *bh;
4109 struct ppc_link_hash_entry *fdh;
4110
4111 abfd = fh->elf.root.u.undef.abfd;
4112 newsym = bfd_make_empty_symbol (abfd);
4113 newsym->name = fh->elf.root.root.string + 1;
4114 newsym->section = bfd_und_section_ptr;
4115 newsym->value = 0;
908b32fc 4116 newsym->flags = BSF_WEAK;
bb700d78
AM
4117
4118 bh = NULL;
4119 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4120 newsym->flags, newsym->section,
4121 newsym->value, NULL, FALSE, FALSE,
4122 &bh))
4123 return NULL;
4124
4125 fdh = (struct ppc_link_hash_entry *) bh;
4126 fdh->elf.non_elf = 0;
908b32fc
AM
4127 fdh->fake = 1;
4128 fdh->is_func_descriptor = 1;
4129 fdh->oh = fh;
4130 fh->is_func = 1;
4131 fh->oh = fdh;
bb700d78
AM
4132 return fdh;
4133}
4134
8387904d
AM
4135/* Fix function descriptor symbols defined in .opd sections to be
4136 function type. */
555cd476
AM
4137
4138static bfd_boolean
b3fac117 4139ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM
4140 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4141 Elf_Internal_Sym *isym,
b3fac117 4142 const char **name ATTRIBUTE_UNUSED,
555cd476
AM
4143 flagword *flags ATTRIBUTE_UNUSED,
4144 asection **sec,
4145 bfd_vma *value ATTRIBUTE_UNUSED)
4146{
8843416a
AM
4147 if (*sec != NULL
4148 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4149 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4150
555cd476
AM
4151 return TRUE;
4152}
4153
8387904d 4154/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM
4155 inclusion of a new ABI object archive that defines "bar".
4156 NAME is a symbol defined in an archive. Return a symbol in the hash
4157 table that might be satisfied by the archive symbols. */
8387904d
AM
4158
4159static struct elf_link_hash_entry *
4160ppc64_elf_archive_symbol_lookup (bfd *abfd,
4161 struct bfd_link_info *info,
4162 const char *name)
4163{
4164 struct elf_link_hash_entry *h;
4165 char *dot_name;
4166 size_t len;
4167
4168 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM
4169 if (h != NULL
4170 /* Don't return this sym if it is a fake function descriptor
4171 created by add_symbol_adjust. */
4172 && !(h->root.type == bfd_link_hash_undefweak
4173 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM
4174 return h;
4175
4176 if (name[0] == '.')
4177 return h;
4178
4179 len = strlen (name);
4180 dot_name = bfd_alloc (abfd, len + 2);
4181 if (dot_name == NULL)
4182 return (struct elf_link_hash_entry *) 0 - 1;
4183 dot_name[0] = '.';
4184 memcpy (dot_name + 1, name, len + 1);
4185 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4186 bfd_release (abfd, dot_name);
4187 return h;
4188}
4189
4190/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM
4191 new ABI object defines "bar". Well, at least, undefined dot symbols
4192 are made weak. This stops later archive searches from including an
4193 object if we already have a function descriptor definition. It also
35b0ce59
AM
4194 prevents the linker complaining about undefined symbols.
4195 We also check and correct mismatched symbol visibility here. The
4196 most restrictive visibility of the function descriptor and the
4197 function entry symbol is used. */
8387904d
AM
4198
4199static bfd_boolean
b3fac117 4200add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4201{
8387904d
AM
4202 struct ppc_link_hash_table *htab;
4203 struct ppc_link_hash_entry *fdh;
4204
b3fac117 4205 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM
4206 return TRUE;
4207
b3fac117
AM
4208 if (eh->elf.root.type == bfd_link_hash_warning)
4209 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4210
b3fac117
AM
4211 if (eh->elf.root.root.string[0] != '.')
4212 abort ();
8387904d 4213
b3fac117 4214 htab = ppc_hash_table (info);
99877b66 4215 fdh = get_fdh (eh, htab);
bb700d78 4216 if (fdh == NULL
b3fac117 4217 && !info->relocatable
bb700d78
AM
4218 && (eh->elf.root.type == bfd_link_hash_undefined
4219 || eh->elf.root.type == bfd_link_hash_undefweak)
4220 && eh->elf.ref_regular)
4221 {
4222 /* Make an undefweak function descriptor sym, which is enough to
4223 pull in an --as-needed shared lib, but won't cause link
4224 errors. Archives are handled elsewhere. */
b3fac117 4225 fdh = make_fdh (info, eh);
bb700d78 4226 if (fdh == NULL)
b3fac117 4227 return FALSE;
bb700d78
AM
4228 else
4229 fdh->elf.ref_regular = 1;
4230 }
e87d886e 4231 else if (fdh != NULL)
8387904d 4232 {
35b0ce59
AM
4233 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4234 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4235 if (entry_vis < descr_vis)
4236 fdh->elf.other += entry_vis - descr_vis;
4237 else if (entry_vis > descr_vis)
4238 eh->elf.other += descr_vis - entry_vis;
4239
e87d886e
AM
4240 if ((fdh->elf.root.type == bfd_link_hash_defined
4241 || fdh->elf.root.type == bfd_link_hash_defweak)
4242 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM
4243 {
4244 eh->elf.root.type = bfd_link_hash_undefweak;
4245 eh->was_undefined = 1;
4246 htab->twiddled_syms = 1;
4247 }
8387904d 4248 }
99877b66 4249
8387904d
AM
4250 return TRUE;
4251}
4252
b3fac117
AM
4253/* Process list of dot-symbols we made in link_hash_newfunc. */
4254
8387904d 4255static bfd_boolean
b3fac117 4256ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4257{
99877b66 4258 struct ppc_link_hash_table *htab;
b3fac117 4259 struct ppc_link_hash_entry **p, *eh;
433817dd 4260
99877b66 4261 htab = ppc_hash_table (info);
ee75fd95 4262 if (!is_ppc64_elf_target (htab->elf.root.creator))
35b0ce59
AM
4263 return TRUE;
4264
b3fac117
AM
4265 if (is_ppc64_elf_target (ibfd->xvec))
4266 {
4267 p = &htab->dot_syms;
4268 while ((eh = *p) != NULL)
4269 {
4270 *p = NULL;
4271 if (!add_symbol_adjust (eh, info))
4272 return FALSE;
4273 p = &eh->u.next_dot_sym;
4274 }
4275 }
4276
4277 /* Clear the list for non-ppc64 input files. */
4278 p = &htab->dot_syms;
4279 while ((eh = *p) != NULL)
4280 {
4281 *p = NULL;
4282 p = &eh->u.next_dot_sym;
4283 }
99877b66
AM
4284
4285 /* We need to fix the undefs list for any syms we have twiddled to
4286 undef_weak. */
4287 if (htab->twiddled_syms)
4288 {
77cfaee6 4289 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM
4290 htab->twiddled_syms = 0;
4291 }
b3fac117 4292 return TRUE;
8387904d
AM
4293}
4294
97fed1c9
JJ
4295/* Undo hash table changes when an --as-needed input file is determined
4296 not to be needed. */
4297
4298static bfd_boolean
4299ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4300 struct bfd_link_info *info)
4301{
4302 ppc_hash_table (info)->dot_syms = NULL;
4303 return TRUE;
4304}
4305
411e1bfb 4306static bfd_boolean
4ce794b7
AM
4307update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4308 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM
4309{
4310 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4311 char *local_got_tls_masks;
411e1bfb
AM
4312
4313 if (local_got_ents == NULL)
4314 {
4315 bfd_size_type size = symtab_hdr->sh_info;
4316
e7b938ca 4317 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4318 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM
4319 if (local_got_ents == NULL)
4320 return FALSE;
4321 elf_local_got_ents (abfd) = local_got_ents;
4322 }
4323
4324 if ((tls_type & TLS_EXPLICIT) == 0)
4325 {
4326 struct got_entry *ent;
4327
4328 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM
4329 if (ent->addend == r_addend
4330 && ent->owner == abfd
4331 && ent->tls_type == tls_type)
411e1bfb
AM
4332 break;
4333 if (ent == NULL)
4334 {
4335 bfd_size_type amt = sizeof (*ent);
4ce794b7 4336 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4337 if (ent == NULL)
4338 return FALSE;
4339 ent->next = local_got_ents[r_symndx];
4340 ent->addend = r_addend;
e717da7e 4341 ent->owner = abfd;
411e1bfb
AM
4342 ent->tls_type = tls_type;
4343 ent->got.refcount = 0;
4344 local_got_ents[r_symndx] = ent;
4345 }
4346 ent->got.refcount += 1;
4347 }
4348
e7b938ca
AM
4349 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4350 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4351 return TRUE;
65f38f15
AM
4352}
4353
411e1bfb 4354static bfd_boolean
4ce794b7 4355update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4356{
411e1bfb 4357 struct plt_entry *ent;
1e2f5b6e 4358
411e1bfb
AM
4359 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4360 if (ent->addend == addend)
4361 break;
4362 if (ent == NULL)
1e2f5b6e 4363 {
411e1bfb 4364 bfd_size_type amt = sizeof (*ent);
4ce794b7 4365 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4366 if (ent == NULL)
4367 return FALSE;
4368 ent->next = eh->elf.plt.plist;
4369 ent->addend = addend;
4370 ent->plt.refcount = 0;
4371 eh->elf.plt.plist = ent;
1e2f5b6e 4372 }
411e1bfb 4373 ent->plt.refcount += 1;
f5385ebf 4374 eh->elf.needs_plt = 1;
93f3fa99
AM
4375 if (eh->elf.root.root.string[0] == '.'
4376 && eh->elf.root.root.string[1] != '\0')
4377 eh->is_func = 1;
b34976b6 4378 return TRUE;
1e2f5b6e
AM
4379}
4380
5bd4f169 4381/* Look through the relocs for a section during the first phase, and
65f38f15 4382 calculate needed space in the global offset table, procedure
5d1634d7 4383 linkage table, and dynamic reloc sections. */
5bd4f169 4384
b34976b6 4385static bfd_boolean
4ce794b7
AM
4386ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4387 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4388{
65f38f15 4389 struct ppc_link_hash_table *htab;
5bd4f169
AM
4390 Elf_Internal_Shdr *symtab_hdr;
4391 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4392 const Elf_Internal_Rela *rel;
4393 const Elf_Internal_Rela *rel_end;
5bd4f169 4394 asection *sreloc;
1e2f5b6e 4395 asection **opd_sym_map;
5bd4f169 4396
1049f94e 4397 if (info->relocatable)
b34976b6 4398 return TRUE;
5bd4f169 4399
680a3378
AM
4400 /* Don't do anything special with non-loaded, non-alloced sections.
4401 In particular, any relocs in such sections should not affect GOT
4402 and PLT reference counting (ie. we don't allow them to create GOT
4403 or PLT entries), there's no possibility or desire to optimize TLS
4404 relocs, and there's not much point in propagating relocs to shared
4405 libs that the dynamic linker won't relocate. */
4406 if ((sec->flags & SEC_ALLOC) == 0)
4407 return TRUE;
4408
65f38f15 4409 htab = ppc_hash_table (info);
5bd4f169 4410 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5bd4f169
AM
4411
4412 sym_hashes = elf_sym_hashes (abfd);
4413 sym_hashes_end = (sym_hashes
1e2f5b6e
AM
4414 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4415 - symtab_hdr->sh_info);
5bd4f169
AM
4416
4417 sreloc = NULL;
1e2f5b6e
AM
4418 opd_sym_map = NULL;
4419 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4420 {
4421 /* Garbage collection needs some extra help with .opd sections.
4422 We don't want to necessarily keep everything referenced by
4423 relocs in .opd, as that would keep all functions. Instead,
4424 if we reference an .opd symbol (a function descriptor), we
4425 want to keep the function code symbol's section. This is
4426 easy for global symbols, but for local syms we need to keep
4427 information about the associated function section. Later, if
4428 edit_opd deletes entries, we'll use this array to adjust
4429 local syms in .opd. */
4430 union opd_info {
4431 asection *func_section;
4432 long entry_adjust;
4433 };
4434 bfd_size_type amt;
4435
3f764659 4436 amt = sec->size * sizeof (union opd_info) / 8;
4ce794b7 4437 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4438 if (opd_sym_map == NULL)
b34976b6 4439 return FALSE;
7c8fe5c4
AM
4440 ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map;
4441 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4442 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4443 }
5bd4f169 4444
82bd7b59
AM
4445 if (htab->sfpr == NULL
4446 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4447 return FALSE;
82bd7b59 4448
5bd4f169
AM
4449 rel_end = relocs + sec->reloc_count;
4450 for (rel = relocs; rel < rel_end; rel++)
4451 {
4452 unsigned long r_symndx;
4453 struct elf_link_hash_entry *h;
04c9666a 4454 enum elf_ppc64_reloc_type r_type;
411e1bfb 4455 int tls_type = 0;
7c8fe5c4 4456 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM
4457
4458 r_symndx = ELF64_R_SYM (rel->r_info);
4459 if (r_symndx < symtab_hdr->sh_info)
4460 h = NULL;
4461 else
973a3492
L
4462 {
4463 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4464 while (h->root.type == bfd_link_hash_indirect
4465 || h->root.type == bfd_link_hash_warning)
4466 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4467 }
5bd4f169 4468
4ce794b7 4469 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4470 switch (r_type)
5bd4f169 4471 {
411e1bfb
AM
4472 case R_PPC64_GOT_TLSLD16:
4473 case R_PPC64_GOT_TLSLD16_LO:
4474 case R_PPC64_GOT_TLSLD16_HI:
4475 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 4476 ppc64_tlsld_got (abfd)->refcount += 1;
951fd09b 4477 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
4478 goto dogottls;
4479
4480 case R_PPC64_GOT_TLSGD16:
4481 case R_PPC64_GOT_TLSGD16_LO:
4482 case R_PPC64_GOT_TLSGD16_HI:
4483 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4484 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
4485 goto dogottls;
4486
4487 case R_PPC64_GOT_TPREL16_DS:
4488 case R_PPC64_GOT_TPREL16_LO_DS:
4489 case R_PPC64_GOT_TPREL16_HI:
4490 case R_PPC64_GOT_TPREL16_HA:
4491 if (info->shared)
4492 info->flags |= DF_STATIC_TLS;
4493 tls_type = TLS_TLS | TLS_TPREL;
4494 goto dogottls;
4495
4496 case R_PPC64_GOT_DTPREL16_DS:
4497 case R_PPC64_GOT_DTPREL16_LO_DS:
4498 case R_PPC64_GOT_DTPREL16_HI:
4499 case R_PPC64_GOT_DTPREL16_HA:
4500 tls_type = TLS_TLS | TLS_DTPREL;
4501 dogottls:
4502 sec->has_tls_reloc = 1;
4503 /* Fall thru */
4504
5bd4f169 4505 case R_PPC64_GOT16:
5bd4f169 4506 case R_PPC64_GOT16_DS:
65f38f15
AM
4507 case R_PPC64_GOT16_HA:
4508 case R_PPC64_GOT16_HI:
4509 case R_PPC64_GOT16_LO:
5bd4f169 4510 case R_PPC64_GOT16_LO_DS:
65f38f15 4511 /* This symbol requires a global offset table entry. */
4c52953f 4512 sec->has_toc_reloc = 1;
e717da7e
AM
4513 if (ppc64_elf_tdata (abfd)->got == NULL
4514 && !create_got_section (abfd, info))
b34976b6 4515 return FALSE;
5bd4f169
AM
4516
4517 if (h != NULL)
4518 {
411e1bfb
AM
4519 struct ppc_link_hash_entry *eh;
4520 struct got_entry *ent;
65f38f15 4521
411e1bfb
AM
4522 eh = (struct ppc_link_hash_entry *) h;
4523 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4524 if (ent->addend == rel->r_addend
e717da7e 4525 && ent->owner == abfd
411e1bfb
AM
4526 && ent->tls_type == tls_type)
4527 break;
4528 if (ent == NULL)
5bd4f169 4529 {
411e1bfb 4530 bfd_size_type amt = sizeof (*ent);
4ce794b7 4531 ent = bfd_alloc (abfd, amt);
411e1bfb 4532 if (ent == NULL)
b34976b6 4533 return FALSE;
411e1bfb
AM
4534 ent->next = eh->elf.got.glist;
4535 ent->addend = rel->r_addend;
e717da7e 4536 ent->owner = abfd;
411e1bfb
AM
4537 ent->tls_type = tls_type;
4538 ent->got.refcount = 0;
4539 eh->elf.got.glist = ent;
5bd4f169 4540 }
411e1bfb 4541 ent->got.refcount += 1;
e7b938ca 4542 eh->tls_mask |= tls_type;
5bd4f169 4543 }
411e1bfb
AM
4544 else
4545 /* This is a global offset table entry for a local symbol. */
4546 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4547 rel->r_addend, tls_type))
4548 return FALSE;
5bd4f169
AM
4549 break;
4550
5bd4f169 4551 case R_PPC64_PLT16_HA:
65f38f15
AM
4552 case R_PPC64_PLT16_HI:
4553 case R_PPC64_PLT16_LO:
4554 case R_PPC64_PLT32:
4555 case R_PPC64_PLT64:
5bd4f169 4556 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM
4557 actually build the entry in adjust_dynamic_symbol,
4558 because this might be a case of linking PIC code without
4559 linking in any dynamic objects, in which case we don't
4560 need to generate a procedure linkage table after all. */
5bd4f169
AM
4561 if (h == NULL)
4562 {
4563 /* It does not make sense to have a procedure linkage
3fad3c7c 4564 table entry for a local symbol. */
5bd4f169 4565 bfd_set_error (bfd_error_bad_value);
b34976b6 4566 return FALSE;
5bd4f169 4567 }
411e1bfb
AM
4568 else
4569 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4570 rel->r_addend))
4571 return FALSE;
5bd4f169
AM
4572 break;
4573
4574 /* The following relocations don't need to propagate the
4575 relocation if linking a shared object since they are
4576 section relative. */
4577 case R_PPC64_SECTOFF:
4578 case R_PPC64_SECTOFF_LO:
4579 case R_PPC64_SECTOFF_HI:
4580 case R_PPC64_SECTOFF_HA:
4581 case R_PPC64_SECTOFF_DS:
4582 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM
4583 case R_PPC64_DTPREL16:
4584 case R_PPC64_DTPREL16_LO:
4585 case R_PPC64_DTPREL16_HI:
4586 case R_PPC64_DTPREL16_HA:
4587 case R_PPC64_DTPREL16_DS:
4588 case R_PPC64_DTPREL16_LO_DS:
4589 case R_PPC64_DTPREL16_HIGHER:
4590 case R_PPC64_DTPREL16_HIGHERA:
4591 case R_PPC64_DTPREL16_HIGHEST:
4592 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM
4593 break;
4594
ad8e1ba5
AM
4595 /* Nor do these. */
4596 case R_PPC64_TOC16:
4597 case R_PPC64_TOC16_LO:
4598 case R_PPC64_TOC16_HI:
4599 case R_PPC64_TOC16_HA:
4600 case R_PPC64_TOC16_DS:
4601 case R_PPC64_TOC16_LO_DS:
4c52953f 4602 sec->has_toc_reloc = 1;
ad8e1ba5
AM
4603 break;
4604
5bd4f169
AM
4605 /* This relocation describes the C++ object vtable hierarchy.
4606 Reconstruct it for later use during GC. */
4607 case R_PPC64_GNU_VTINHERIT:
c152c796 4608 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4609 return FALSE;
5bd4f169
AM
4610 break;
4611
4612 /* This relocation describes which C++ vtable entries are actually
4613 used. Record for later use during GC. */
4614 case R_PPC64_GNU_VTENTRY:
c152c796 4615 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4616 return FALSE;
5bd4f169
AM
4617 break;
4618
721956f4
AM
4619 case R_PPC64_REL14:
4620 case R_PPC64_REL14_BRTAKEN:
4621 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM
4622 {
4623 asection *dest = NULL;
4624
4625 /* Heuristic: If jumping outside our section, chances are
4626 we are going to need a stub. */
4627 if (h != NULL)
4628 {
4629 /* If the sym is weak it may be overridden later, so
4630 don't assume we know where a weak sym lives. */
4631 if (h->root.type == bfd_link_hash_defined)
4632 dest = h->root.u.def.section;
4633 }
4634 else
4635 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4636 sec, r_symndx);
4637 if (dest != sec)
7c8fe5c4 4638 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4639 }
721956f4
AM
4640 /* Fall through. */
4641
5d1634d7 4642 case R_PPC64_REL24:
8387904d 4643 if (h != NULL)
5d1634d7
AM
4644 {
4645 /* We may need a .plt entry if the function this reloc
4646 refers to is in a shared lib. */
411e1bfb
AM
4647 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4648 rel->r_addend))
4649 return FALSE;
8387904d
AM
4650 if (h == &htab->tls_get_addr->elf
4651 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4652 sec->has_tls_reloc = 1;
8387904d 4653 else if (htab->tls_get_addr == NULL
0112cd26 4654 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM
4655 && (h->root.root.string[15] == 0
4656 || h->root.root.string[15] == '@'))
411e1bfb 4657 {
8387904d
AM
4658 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4659 sec->has_tls_reloc = 1;
4660 }
4661 else if (htab->tls_get_addr_fd == NULL
0112cd26 4662 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM
4663 && (h->root.root.string[14] == 0
4664 || h->root.root.string[14] == '@'))
4665 {
4666 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM
4667 sec->has_tls_reloc = 1;
4668 }
4669 }
4670 break;
4671
4672 case R_PPC64_TPREL64:
4673 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4674 if (info->shared)
4675 info->flags |= DF_STATIC_TLS;
4676 goto dotlstoc;
4677
4678 case R_PPC64_DTPMOD64:
4679 if (rel + 1 < rel_end
4680 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4681 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4682 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4683 else
951fd09b 4684 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM
4685 goto dotlstoc;
4686
4687 case R_PPC64_DTPREL64:
4688 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4689 if (rel != relocs
4690 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4691 && rel[-1].r_offset == rel->r_offset - 8)
4692 /* This is the second reloc of a dtpmod, dtprel pair.
4693 Don't mark with TLS_DTPREL. */
4694 goto dodyn;
4695
4696 dotlstoc:
4697 sec->has_tls_reloc = 1;
4698 if (h != NULL)
4699 {
4700 struct ppc_link_hash_entry *eh;
4701 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4702 eh->tls_mask |= tls_type;
411e1bfb
AM
4703 }
4704 else
4705 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4706 rel->r_addend, tls_type))
4707 return FALSE;
4708
7c8fe5c4
AM
4709 ppc64_sec = ppc64_elf_section_data (sec);
4710 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4711 {
e7b938ca 4712 /* One extra to simplify get_tls_mask. */
eea6121a 4713 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM
4714 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4715 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4716 return FALSE;
7c8fe5c4
AM
4717 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4718 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM
4719 }
4720 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4721 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM
4722
4723 /* Mark the second slot of a GD or LD entry.
4724 -1 to indicate GD and -2 to indicate LD. */
4725 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4726 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4727 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4728 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM
4729 goto dodyn;
4730
4731 case R_PPC64_TPREL16:
4732 case R_PPC64_TPREL16_LO:
4733 case R_PPC64_TPREL16_HI:
4734 case R_PPC64_TPREL16_HA:
4735 case R_PPC64_TPREL16_DS:
4736 case R_PPC64_TPREL16_LO_DS:
4737 case R_PPC64_TPREL16_HIGHER:
4738 case R_PPC64_TPREL16_HIGHERA:
4739 case R_PPC64_TPREL16_HIGHEST:
4740 case R_PPC64_TPREL16_HIGHESTA:
4741 if (info->shared)
4742 {
4743 info->flags |= DF_STATIC_TLS;
4744 goto dodyn;
5d1634d7
AM
4745 }
4746 break;
4747
e86ce104 4748 case R_PPC64_ADDR64:
1e2f5b6e 4749 if (opd_sym_map != NULL
1e2f5b6e 4750 && rel + 1 < rel_end
4ce794b7 4751 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4752 {
8387904d
AM
4753 if (h != NULL)
4754 {
4755 if (h->root.root.string[0] == '.'
4756 && h->root.root.string[1] != 0
4757 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4758 ;
4759 else
4760 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4761 }
4762 else
4763 {
4764 asection *s;
1e2f5b6e 4765
8387904d
AM
4766 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4767 r_symndx);
4768 if (s == NULL)
4769 return FALSE;
4770 else if (s != sec)
3f764659 4771 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4772 }
1e2f5b6e 4773 }
e86ce104
AM
4774 /* Fall through. */
4775
04c9666a 4776 case R_PPC64_REL30:
5bd4f169 4777 case R_PPC64_REL32:
04c9666a 4778 case R_PPC64_REL64:
65f38f15
AM
4779 case R_PPC64_ADDR14:
4780 case R_PPC64_ADDR14_BRNTAKEN:
4781 case R_PPC64_ADDR14_BRTAKEN:
4782 case R_PPC64_ADDR16:
4783 case R_PPC64_ADDR16_DS:
4784 case R_PPC64_ADDR16_HA:
4785 case R_PPC64_ADDR16_HI:
4786 case R_PPC64_ADDR16_HIGHER:
4787 case R_PPC64_ADDR16_HIGHERA:
4788 case R_PPC64_ADDR16_HIGHEST:
4789 case R_PPC64_ADDR16_HIGHESTA:
4790 case R_PPC64_ADDR16_LO:
4791 case R_PPC64_ADDR16_LO_DS:
4792 case R_PPC64_ADDR24:
65f38f15 4793 case R_PPC64_ADDR32:
65f38f15
AM
4794 case R_PPC64_UADDR16:
4795 case R_PPC64_UADDR32:
4796 case R_PPC64_UADDR64:
5bd4f169 4797 case R_PPC64_TOC:
81848ca0
AM
4798 if (h != NULL && !info->shared)
4799 /* We may need a copy reloc. */
f5385ebf 4800 h->non_got_ref = 1;
81848ca0 4801
41bd81ab 4802 /* Don't propagate .opd relocs. */
1e2f5b6e 4803 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4804 break;
e86ce104 4805
65f38f15
AM
4806 /* If we are creating a shared library, and this is a reloc
4807 against a global symbol, or a non PC relative reloc
4808 against a local symbol, then we need to copy the reloc
4809 into the shared library. However, if we are linking with
4810 -Bsymbolic, we do not need to copy a reloc against a
4811 global symbol which is defined in an object we are
4812 including in the link (i.e., DEF_REGULAR is set). At
4813 this point we have not seen all the input files, so it is
4814 possible that DEF_REGULAR is not set now but will be set
4815 later (it is never cleared). In case of a weak definition,
4816 DEF_REGULAR may be cleared later by a strong definition in
4817 a shared library. We account for that possibility below by
f4656909 4818 storing information in the dyn_relocs field of the hash
65f38f15
AM
4819 table entry. A similar situation occurs when creating
4820 shared libraries and symbol visibility changes render the
4821 symbol local.
4822
4823 If on the other hand, we are creating an executable, we
4824 may need to keep relocations for symbols satisfied by a
4825 dynamic library if we manage to avoid copy relocs for the
4826 symbol. */
411e1bfb 4827 dodyn:
65f38f15 4828 if ((info->shared
411e1bfb 4829 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM
4830 || (h != NULL
4831 && (! info->symbolic
4832 || h->root.type == bfd_link_hash_defweak
f5385ebf 4833 || !h->def_regular))))
f4656909
AM
4834 || (ELIMINATE_COPY_RELOCS
4835 && !info->shared
65f38f15
AM
4836 && h != NULL
4837 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4838 || !h->def_regular)))
5bd4f169 4839 {
ec338859
AM
4840 struct ppc_dyn_relocs *p;
4841 struct ppc_dyn_relocs **head;
4842
65f38f15
AM
4843 /* We must copy these reloc types into the output file.
4844 Create a reloc section in dynobj and make room for
4845 this reloc. */
5bd4f169
AM
4846 if (sreloc == NULL)
4847 {
4848 const char *name;
65f38f15 4849 bfd *dynobj;
5bd4f169
AM
4850
4851 name = (bfd_elf_string_from_elf_section
4852 (abfd,
4853 elf_elfheader (abfd)->e_shstrndx,
4854 elf_section_data (sec)->rel_hdr.sh_name));
4855 if (name == NULL)
b34976b6 4856 return FALSE;
5bd4f169 4857
0112cd26 4858 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM
4859 || strcmp (bfd_get_section_name (abfd, sec),
4860 name + 5) != 0)
4861 {
4862 (*_bfd_error_handler)
d003868e
AM
4863 (_("%B: bad relocation section name `%s\'"),
4864 abfd, name);
5d1634d7 4865 bfd_set_error (bfd_error_bad_value);
65f38f15
AM
4866 }
4867
65f38f15 4868 dynobj = htab->elf.dynobj;
5bd4f169
AM
4869 sreloc = bfd_get_section_by_name (dynobj, name);
4870 if (sreloc == NULL)
4871 {
4872 flagword flags;
4873
5bd4f169 4874 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM
4875 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4876 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L
4877 sreloc = bfd_make_section_with_flags (dynobj,
4878 name,
4879 flags);
5bd4f169 4880 if (sreloc == NULL
65f38f15 4881 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4882 return FALSE;
5bd4f169 4883 }
65f38f15 4884 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM
4885 }
4886
65f38f15
AM
4887 /* If this is a global symbol, we count the number of
4888 relocations we need for this symbol. */
4889 if (h != NULL)
4890 {
ec338859 4891 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM
4892 }
4893 else
4894 {
ec338859
AM
4895 /* Track dynamic relocs needed for local syms too.
4896 We really need local syms available to do this
4897 easily. Oh well. */
4898
4899 asection *s;
6edfbbad
DJ
4900 void *vpp;
4901
ec338859
AM
4902 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4903 sec, r_symndx);
4904 if (s == NULL)
b34976b6 4905 return FALSE;
ec338859 4906
6edfbbad
DJ
4907 vpp = &elf_section_data (s)->local_dynrel;
4908 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 4909 }
ec338859
AM
4910
4911 p = *head;
4912 if (p == NULL || p->sec != sec)
4913 {
4ce794b7 4914 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4915 if (p == NULL)
b34976b6 4916 return FALSE;
ec338859
AM
4917 p->next = *head;
4918 *head = p;
4919 p->sec = sec;
4920 p->count = 0;
4921 p->pc_count = 0;
4922 }
4923
4924 p->count += 1;
411e1bfb 4925 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4926 p->pc_count += 1;
65f38f15 4927 }
5bd4f169 4928 break;
65f38f15
AM
4929
4930 default:
96e0dda4 4931 break;
5bd4f169
AM
4932 }
4933 }
4934
b34976b6 4935 return TRUE;
5bd4f169
AM
4936}
4937
8387904d
AM
4938/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4939 of the code entry point, and its section. */
4940
4941static bfd_vma
4942opd_entry_value (asection *opd_sec,
4943 bfd_vma offset,
4944 asection **code_sec,
4945 bfd_vma *code_off)
4946{
4947 bfd *opd_bfd = opd_sec->owner;
8860955f 4948 Elf_Internal_Rela *relocs;
8387904d 4949 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4950 bfd_vma val;
8387904d 4951
4b85d634
AM
4952 /* No relocs implies we are linking a --just-symbols object. */
4953 if (opd_sec->reloc_count == 0)
4954 {
4955 bfd_vma val;
4956
4957 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4958 return (bfd_vma) -1;
3b36f7e6 4959
4b85d634
AM
4960 if (code_sec != NULL)
4961 {
4962 asection *sec, *likely = NULL;
4963 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4964 if (sec->vma <= val
4965 && (sec->flags & SEC_LOAD) != 0
4966 && (sec->flags & SEC_ALLOC) != 0)
4967 likely = sec;
4968 if (likely != NULL)
4969 {
4970 *code_sec = likely;
4971 if (code_off != NULL)
4972 *code_off = val - likely->vma;
4973 }
4974 }
4975 return val;
4976 }
4977
8860955f
AM
4978 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4979 if (relocs == NULL)
4980 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4981
8387904d 4982 /* Go find the opd reloc at the sym address. */
8860955f 4983 lo = relocs;
8387904d
AM
4984 BFD_ASSERT (lo != NULL);
4985 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4986 val = (bfd_vma) -1;
8387904d
AM
4987 while (lo < hi)
4988 {
4989 look = lo + (hi - lo) / 2;
4990 if (look->r_offset < offset)
4991 lo = look + 1;
4992 else if (look->r_offset > offset)
4993 hi = look;
4994 else
4995 {
4996 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr;
4997 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
4998 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
4999 {
5000 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM
5001 asection *sec;
5002
5003 if (symndx < symtab_hdr->sh_info)
5004 {
5005 Elf_Internal_Sym *sym;
5006
5007 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5008 if (sym == NULL)
5009 {
5010 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5011 symtab_hdr->sh_info,
5012 0, NULL, NULL, NULL);
5013 if (sym == NULL)
645ea6a9 5014 break;
8387904d
AM
5015 symtab_hdr->contents = (bfd_byte *) sym;
5016 }
5017
5018 sym += symndx;
5019 val = sym->st_value;
5020 sec = NULL;
5021 if ((sym->st_shndx != SHN_UNDEF
5022 && sym->st_shndx < SHN_LORESERVE)
5023 || sym->st_shndx > SHN_HIRESERVE)
5024 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
5025 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5026 }
5027 else
5028 {
5029 struct elf_link_hash_entry **sym_hashes;
5030 struct elf_link_hash_entry *rh;
5031
5032 sym_hashes = elf_sym_hashes (opd_bfd);
5033 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5034 while (rh->root.type == bfd_link_hash_indirect
5035 || rh->root.type == bfd_link_hash_warning)
5036 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5037 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5038 || rh->root.type == bfd_link_hash_defweak);
5039 val = rh->root.u.def.value;
5040 sec = rh->root.u.def.section;
5041 }
5042 val += look->r_addend;
5043 if (code_off != NULL)
5044 *code_off = val;
5045 if (code_sec != NULL)
5046 *code_sec = sec;
5047 if (sec != NULL && sec->output_section != NULL)
5048 val += sec->output_section->vma + sec->output_offset;
8387904d
AM
5049 }
5050 break;
5051 }
5052 }
645ea6a9 5053
645ea6a9 5054 return val;
8387904d
AM
5055}
5056
64d03ab5
AM
5057/* Mark sections containing dynamically referenced symbols. When
5058 building shared libraries, we must assume that any visible symbol is
5059 referenced. */
5060
5061static bfd_boolean
5062ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5063{
5064 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5065 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5066
5067 if (eh->elf.root.type == bfd_link_hash_warning)
5068 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5069
5070 /* Dynamic linking info is on the func descriptor sym. */
5071 if (eh->oh != NULL
5072 && eh->oh->is_func_descriptor
5073 && (eh->oh->elf.root.type == bfd_link_hash_defined
5074 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5075 eh = eh->oh;
5076
5077 if ((eh->elf.root.type == bfd_link_hash_defined
5078 || eh->elf.root.type == bfd_link_hash_defweak)
5079 && (eh->elf.ref_dynamic
5080 || (!info->executable
5081 && eh->elf.def_regular
5082 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5083 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5084 {
5085 asection *code_sec;
5086
5087 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5088
5089 /* Function descriptor syms cause the associated
5090 function code sym section to be marked. */
5091 if (eh->is_func_descriptor
5092 && (eh->oh->elf.root.type == bfd_link_hash_defined
5093 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5094 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5095 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5096 && opd_entry_value (eh->elf.root.u.def.section,
5097 eh->elf.root.u.def.value,
5098 &code_sec, NULL) != (bfd_vma) -1)
5099 code_sec->flags |= SEC_KEEP;
5100 }
5101
5102 return TRUE;
5103}
5104
5bd4f169
AM
5105/* Return the section that should be marked against GC for a given
5106 relocation. */
5107
5108static asection *
4ce794b7 5109ppc64_elf_gc_mark_hook (asection *sec,
ccfa59ea 5110 struct bfd_link_info *info,
4ce794b7
AM
5111 Elf_Internal_Rela *rel,
5112 struct elf_link_hash_entry *h,
5113 Elf_Internal_Sym *sym)
5bd4f169 5114{
ccfa59ea
AM
5115 asection *rsec;
5116
5117 /* First mark all our entry sym sections. */
5118 if (info->gc_sym_list != NULL)
5119 {
5120 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5121 struct bfd_sym_chain *sym = info->gc_sym_list;
5122
5123 info->gc_sym_list = NULL;
b56cbdb9 5124 for (; sym != NULL; sym = sym->next)
ccfa59ea
AM
5125 {
5126 struct ppc_link_hash_entry *eh;
5127
5128 eh = (struct ppc_link_hash_entry *)
5129 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5130 if (eh == NULL)
5131 continue;
5132 if (eh->elf.root.type != bfd_link_hash_defined
5133 && eh->elf.root.type != bfd_link_hash_defweak)
5134 continue;
5135
c4f68ce3
AM
5136 if (eh->is_func_descriptor
5137 && (eh->oh->elf.root.type == bfd_link_hash_defined
5138 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5139 rsec = eh->oh->elf.root.u.def.section;
8387904d
AM
5140 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5141 && opd_entry_value (eh->elf.root.u.def.section,
5142 eh->elf.root.u.def.value,
5143 &rsec, NULL) != (bfd_vma) -1)
5144 ;
ccfa59ea
AM
5145 else
5146 continue;
5147
5148 if (!rsec->gc_mark)
5149 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5150
5151 rsec = eh->elf.root.u.def.section;
5152 if (!rsec->gc_mark)
5153 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
ccfa59ea 5154 }
ccfa59ea
AM
5155 }
5156
5157 /* Syms return NULL if we're marking .opd, so we avoid marking all
5158 function sections, as all functions are referenced in .opd. */
5159 rsec = NULL;
5160 if (get_opd_info (sec) != NULL)
5161 return rsec;
1e2f5b6e 5162
5bd4f169
AM
5163 if (h != NULL)
5164 {
04c9666a 5165 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5166 struct ppc_link_hash_entry *eh;
a33d1f77 5167
4ce794b7 5168 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5169 switch (r_type)
5bd4f169
AM
5170 {
5171 case R_PPC64_GNU_VTINHERIT:
5172 case R_PPC64_GNU_VTENTRY:
5173 break;
5174
5175 default:
5176 switch (h->root.type)
5177 {
5178 case bfd_link_hash_defined:
5179 case bfd_link_hash_defweak:
ccfa59ea 5180 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM
5181 if (eh->oh != NULL
5182 && eh->oh->is_func_descriptor
5183 && (eh->oh->elf.root.type == bfd_link_hash_defined
5184 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5185 eh = eh->oh;
1e2f5b6e
AM
5186
5187 /* Function descriptor syms cause the associated
5188 function code sym section to be marked. */
c4f68ce3
AM
5189 if (eh->is_func_descriptor
5190 && (eh->oh->elf.root.type == bfd_link_hash_defined
5191 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM
5192 {
5193 /* They also mark their opd section. */
5194 if (!eh->elf.root.u.def.section->gc_mark)
5195 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5196 ppc64_elf_gc_mark_hook);
5197
5198 rsec = eh->oh->elf.root.u.def.section;
5199 }
8387904d
AM
5200 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5201 && opd_entry_value (eh->elf.root.u.def.section,
5202 eh->elf.root.u.def.value,
5203 &rsec, NULL) != (bfd_vma) -1)
5204 {
5205 if (!eh->elf.root.u.def.section->gc_mark)
5206 _bfd_elf_gc_mark (info, eh->elf.root.u.def.section,
5207 ppc64_elf_gc_mark_hook);
5208 }
ccfa59ea 5209 else
1e2f5b6e
AM
5210 rsec = h->root.u.def.section;
5211 break;
5bd4f169
AM
5212
5213 case bfd_link_hash_common:
1e2f5b6e
AM
5214 rsec = h->root.u.c.p->section;
5215 break;
5bd4f169
AM
5216
5217 default:
5218 break;
5219 }
5220 }
5221 }
5222 else
5223 {
1e2f5b6e
AM
5224 asection **opd_sym_section;
5225
5226 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
ccfa59ea 5227 opd_sym_section = get_opd_info (rsec);
1e2f5b6e 5228 if (opd_sym_section != NULL)
ccfa59ea
AM
5229 {
5230 if (!rsec->gc_mark)
5231 _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook);
5232
b4f4e59f 5233 rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5234 }
5bd4f169
AM
5235 }
5236
1e2f5b6e 5237 return rsec;
5bd4f169
AM
5238}
5239
65f38f15
AM
5240/* Update the .got, .plt. and dynamic reloc reference counts for the
5241 section being removed. */
5bd4f169 5242
b34976b6 5243static bfd_boolean
4ce794b7
AM
5244ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5245 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5246{
411e1bfb 5247 struct ppc_link_hash_table *htab;
5bd4f169
AM
5248 Elf_Internal_Shdr *symtab_hdr;
5249 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5250 struct got_entry **local_got_ents;
5bd4f169 5251 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5252
680a3378
AM
5253 if ((sec->flags & SEC_ALLOC) == 0)
5254 return TRUE;
5255
ec338859
AM
5256 elf_section_data (sec)->local_dynrel = NULL;
5257
411e1bfb 5258 htab = ppc_hash_table (info);
5bd4f169
AM
5259 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5260 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5261 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM
5262
5263 relend = relocs + sec->reloc_count;
5264 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM
5265 {
5266 unsigned long r_symndx;
04c9666a 5267 enum elf_ppc64_reloc_type r_type;
58ac9f71 5268 struct elf_link_hash_entry *h = NULL;
411e1bfb 5269 char tls_type = 0;
5bd4f169 5270
a33d1f77 5271 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5272 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM
5273 if (r_symndx >= symtab_hdr->sh_info)
5274 {
5275 struct ppc_link_hash_entry *eh;
5276 struct ppc_dyn_relocs **pp;
5277 struct ppc_dyn_relocs *p;
5278
5279 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
5280 while (h->root.type == bfd_link_hash_indirect
5281 || h->root.type == bfd_link_hash_warning)
5282 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM
5283 eh = (struct ppc_link_hash_entry *) h;
5284
5285 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5286 if (p->sec == sec)
5287 {
5288 /* Everything must go for SEC. */
5289 *pp = p->next;
5290 break;
5291 }
5292 }
5293
a33d1f77
AM
5294 switch (r_type)
5295 {
411e1bfb
AM
5296 case R_PPC64_GOT_TLSLD16:
5297 case R_PPC64_GOT_TLSLD16_LO:
5298 case R_PPC64_GOT_TLSLD16_HI:
5299 case R_PPC64_GOT_TLSLD16_HA:
e717da7e 5300 ppc64_tlsld_got (abfd)->refcount -= 1;
951fd09b 5301 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5302 goto dogot;
5303
5304 case R_PPC64_GOT_TLSGD16:
5305 case R_PPC64_GOT_TLSGD16_LO:
5306 case R_PPC64_GOT_TLSGD16_HI:
5307 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5308 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5309 goto dogot;
5310
5311 case R_PPC64_GOT_TPREL16_DS:
5312 case R_PPC64_GOT_TPREL16_LO_DS:
5313 case R_PPC64_GOT_TPREL16_HI:
5314 case R_PPC64_GOT_TPREL16_HA:
5315 tls_type = TLS_TLS | TLS_TPREL;
5316 goto dogot;
5317
5318 case R_PPC64_GOT_DTPREL16_DS:
5319 case R_PPC64_GOT_DTPREL16_LO_DS:
5320 case R_PPC64_GOT_DTPREL16_HI:
5321 case R_PPC64_GOT_DTPREL16_HA:
5322 tls_type = TLS_TLS | TLS_DTPREL;
5323 goto dogot;
5324
a33d1f77
AM
5325 case R_PPC64_GOT16:
5326 case R_PPC64_GOT16_DS:
5327 case R_PPC64_GOT16_HA:
5328 case R_PPC64_GOT16_HI:
5329 case R_PPC64_GOT16_LO:
5330 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM
5331 dogot:
5332 {
5333 struct got_entry *ent;
5334
58ac9f71
AM
5335 if (h != NULL)
5336 ent = h->got.glist;
411e1bfb
AM
5337 else
5338 ent = local_got_ents[r_symndx];
5339
5340 for (; ent != NULL; ent = ent->next)
5341 if (ent->addend == rel->r_addend
e717da7e 5342 && ent->owner == abfd
411e1bfb
AM
5343 && ent->tls_type == tls_type)
5344 break;
5345 if (ent == NULL)
5346 abort ();
5347 if (ent->got.refcount > 0)
5348 ent->got.refcount -= 1;
5349 }
a33d1f77 5350 break;
65f38f15 5351
a33d1f77
AM
5352 case R_PPC64_PLT16_HA:
5353 case R_PPC64_PLT16_HI:
5354 case R_PPC64_PLT16_LO:
5355 case R_PPC64_PLT32:
5356 case R_PPC64_PLT64:
721956f4
AM
5357 case R_PPC64_REL14:
5358 case R_PPC64_REL14_BRNTAKEN:
5359 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5360 case R_PPC64_REL24:
58ac9f71 5361 if (h != NULL)
5d1634d7 5362 {
411e1bfb
AM
5363 struct plt_entry *ent;
5364
411e1bfb
AM
5365 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5366 if (ent->addend == rel->r_addend)
5367 break;
5368 if (ent == NULL)
5369 abort ();
5370 if (ent->plt.refcount > 0)
5371 ent->plt.refcount -= 1;
5d1634d7 5372 }
e86ce104 5373 break;
5d1634d7 5374
a33d1f77
AM
5375 default:
5376 break;
5377 }
5378 }
b34976b6 5379 return TRUE;
5bd4f169
AM
5380}
5381
deb0e272
AM
5382/* The maximum size of .sfpr. */
5383#define SFPR_MAX (218*4)
5384
5385struct sfpr_def_parms
5386{
699733f6
AM
5387 const char name[12];
5388 unsigned char lo, hi;
deb0e272
AM
5389 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5390 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5391};
5392
5393/* Auto-generate _save*, _rest* functions in .sfpr. */
5394
5395static unsigned int
5396sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5397{
5398 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5399 unsigned int i;
5400 size_t len = strlen (parm->name);
5401 bfd_boolean writing = FALSE;
699733f6 5402 char sym[16];
deb0e272
AM
5403
5404 memcpy (sym, parm->name, len);
5405 sym[len + 2] = 0;
5406
5407 for (i = parm->lo; i <= parm->hi; i++)
5408 {
5409 struct elf_link_hash_entry *h;
5410
5411 sym[len + 0] = i / 10 + '0';
5412 sym[len + 1] = i % 10 + '0';
5413 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5414 if (h != NULL
f5385ebf 5415 && !h->def_regular)
deb0e272
AM
5416 {
5417 h->root.type = bfd_link_hash_defined;
5418 h->root.u.def.section = htab->sfpr;
5419 h->root.u.def.value = htab->sfpr->size;
5420 h->type = STT_FUNC;
f5385ebf 5421 h->def_regular = 1;
deb0e272
AM
5422 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5423 writing = TRUE;
5424 if (htab->sfpr->contents == NULL)
5425 {
5426 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5427 if (htab->sfpr->contents == NULL)
5428 return FALSE;
5429 }
5430 }
5431 if (writing)
5432 {
5433 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5434 if (i != parm->hi)
5435 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5436 else
5437 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5438 htab->sfpr->size = p - htab->sfpr->contents;
5439 }
5440 }
5441
5442 return TRUE;
5443}
5444
5445static bfd_byte *
5446savegpr0 (bfd *abfd, bfd_byte *p, int r)
5447{
5448 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5449 return p + 4;
5450}
5451
5452static bfd_byte *
5453savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5454{
5455 p = savegpr0 (abfd, p, r);
5456 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5457 p = p + 4;
5458 bfd_put_32 (abfd, BLR, p);
5459 return p + 4;
5460}
5461
5462static bfd_byte *
5463restgpr0 (bfd *abfd, bfd_byte *p, int r)
5464{
5465 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5466 return p + 4;
5467}
5468
5469static bfd_byte *
5470restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5471{
5472 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5473 p = p + 4;
5474 p = restgpr0 (abfd, p, r);
5475 bfd_put_32 (abfd, MTLR_R0, p);
5476 p = p + 4;
5477 if (r == 29)
5478 {
5479 p = restgpr0 (abfd, p, 30);
5480 p = restgpr0 (abfd, p, 31);
5481 }
5482 bfd_put_32 (abfd, BLR, p);
5483 return p + 4;
5484}
5485
5486static bfd_byte *
5487savegpr1 (bfd *abfd, bfd_byte *p, int r)
5488{
5489 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5490 return p + 4;
5491}
5492
5493static bfd_byte *
5494savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5495{
5496 p = savegpr1 (abfd, p, r);
5497 bfd_put_32 (abfd, BLR, p);
5498 return p + 4;
5499}
5500
5501static bfd_byte *
5502restgpr1 (bfd *abfd, bfd_byte *p, int r)
5503{
5504 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5505 return p + 4;
5506}
5507
5508static bfd_byte *
5509restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5510{
5511 p = restgpr1 (abfd, p, r);
5512 bfd_put_32 (abfd, BLR, p);
5513 return p + 4;
5514}
5515
5516static bfd_byte *
5517savefpr (bfd *abfd, bfd_byte *p, int r)
5518{
5519 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5520 return p + 4;
5521}
5522
5523static bfd_byte *
5524savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5525{
5526 p = savefpr (abfd, p, r);
5527 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5528 p = p + 4;
5529 bfd_put_32 (abfd, BLR, p);
5530 return p + 4;
5531}
5532
5533static bfd_byte *
5534restfpr (bfd *abfd, bfd_byte *p, int r)
5535{
5536 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5537 return p + 4;
5538}
5539
5540static bfd_byte *
5541restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5542{
5543 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5544 p = p + 4;
5545 p = restfpr (abfd, p, r);
5546 bfd_put_32 (abfd, MTLR_R0, p);
5547 p = p + 4;
5548 if (r == 29)
5549 {
5550 p = restfpr (abfd, p, 30);
5551 p = restfpr (abfd, p, 31);
5552 }
5553 bfd_put_32 (abfd, BLR, p);
5554 return p + 4;
5555}
5556
5557static bfd_byte *
5558savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5559{
5560 p = savefpr (abfd, p, r);
5561 bfd_put_32 (abfd, BLR, p);
5562 return p + 4;
5563}
5564
5565static bfd_byte *
5566restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5567{
5568 p = restfpr (abfd, p, r);
5569 bfd_put_32 (abfd, BLR, p);
5570 return p + 4;
5571}
5572
5573static bfd_byte *
5574savevr (bfd *abfd, bfd_byte *p, int r)
5575{
5576 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5577 p = p + 4;
5578 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5579 return p + 4;
5580}
5581
5582static bfd_byte *
5583savevr_tail (bfd *abfd, bfd_byte *p, int r)
5584{
5585 p = savevr (abfd, p, r);
5586 bfd_put_32 (abfd, BLR, p);
5587 return p + 4;
5588}
5589
5590static bfd_byte *
5591restvr (bfd *abfd, bfd_byte *p, int r)
5592{
5593 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5594 p = p + 4;
5595 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5596 return p + 4;
5597}
5598
5599static bfd_byte *
5600restvr_tail (bfd *abfd, bfd_byte *p, int r)
5601{
5602 p = restvr (abfd, p, r);
5603 bfd_put_32 (abfd, BLR, p);
5604 return p + 4;
5605}
5606
e86ce104
AM
5607/* Called via elf_link_hash_traverse to transfer dynamic linking
5608 information on function code symbol entries to their corresponding
5609 function descriptor symbol entries. */
deb0e272 5610
b34976b6 5611static bfd_boolean
4ce794b7 5612func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5613{
e86ce104 5614 struct bfd_link_info *info;
65f38f15 5615 struct ppc_link_hash_table *htab;
411e1bfb 5616 struct plt_entry *ent;
50bc7936
AM
5617 struct ppc_link_hash_entry *fh;
5618 struct ppc_link_hash_entry *fdh;
5619 bfd_boolean force_local;
5bd4f169 5620
50bc7936
AM
5621 fh = (struct ppc_link_hash_entry *) h;
5622 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5623 return TRUE;
e86ce104 5624
50bc7936
AM
5625 if (fh->elf.root.type == bfd_link_hash_warning)
5626 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5627
4ce794b7 5628 info = inf;
65f38f15 5629 htab = ppc_hash_table (info);
5bd4f169 5630
c09bdfe5
AM
5631 /* Resolve undefined references to dot-symbols as the value
5632 in the function descriptor, if we have one in a regular object.
5633 This is to satisfy cases like ".quad .foo". Calls to functions
5634 in dynamic objects are handled elsewhere. */
5635 if (fh->elf.root.type == bfd_link_hash_undefweak
5636 && fh->was_undefined
5637 && (fh->oh->elf.root.type == bfd_link_hash_defined
5638 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5639 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5640 && opd_entry_value (fh->oh->elf.root.u.def.section,
5641 fh->oh->elf.root.u.def.value,
5642 &fh->elf.root.u.def.section,
5643 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5644 {
5645 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5646 fh->elf.forced_local = 1;
c09bdfe5
AM
5647 }
5648
e86ce104
AM
5649 /* If this is a function code symbol, transfer dynamic linking
5650 information to the function descriptor symbol. */
50bc7936 5651 if (!fh->is_func)
b34976b6 5652 return TRUE;
e86ce104 5653
50bc7936 5654 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
5655 if (ent->plt.refcount > 0)
5656 break;
50bc7936
AM
5657 if (ent == NULL
5658 || fh->elf.root.root.string[0] != '.'
5659 || fh->elf.root.root.string[1] == '\0')
5660 return TRUE;
5bd4f169 5661
50bc7936
AM
5662 /* Find the corresponding function descriptor symbol. Create it
5663 as undefined if necessary. */
5bd4f169 5664
50bc7936
AM
5665 fdh = get_fdh (fh, htab);
5666 if (fdh != NULL)
5667 while (fdh->elf.root.type == bfd_link_hash_indirect
5668 || fdh->elf.root.type == bfd_link_hash_warning)
5669 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5670
50bc7936
AM
5671 if (fdh == NULL
5672 && info->shared
5673 && (fh->elf.root.type == bfd_link_hash_undefined
5674 || fh->elf.root.type == bfd_link_hash_undefweak))
5675 {
908b32fc 5676 fdh = make_fdh (info, fh);
bb700d78
AM
5677 if (fdh == NULL)
5678 return FALSE;
50bc7936 5679 }
648cca2c 5680
908b32fc 5681 /* Fake function descriptors are made undefweak. If the function
433817dd
AM
5682 code symbol is strong undefined, make the fake sym the same.
5683 If the function code symbol is defined, then force the fake
5684 descriptor local; We can't support overriding of symbols in a
5685 shared library on a fake descriptor. */
908b32fc
AM
5686
5687 if (fdh != NULL
5688 && fdh->fake
433817dd 5689 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5690 {
433817dd
AM
5691 if (fh->elf.root.type == bfd_link_hash_undefined)
5692 {
5693 fdh->elf.root.type = bfd_link_hash_undefined;
5694 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5695 }
5696 else if (fh->elf.root.type == bfd_link_hash_defined
5697 || fh->elf.root.type == bfd_link_hash_defweak)
5698 {
5699 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5700 }
908b32fc
AM
5701 }
5702
50bc7936 5703 if (fdh != NULL
f5385ebf 5704 && !fdh->elf.forced_local
50bc7936 5705 && (info->shared
f5385ebf
AM
5706 || fdh->elf.def_dynamic
5707 || fdh->elf.ref_dynamic
50bc7936
AM
5708 || (fdh->elf.root.type == bfd_link_hash_undefweak
5709 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5710 {
5711 if (fdh->elf.dynindx == -1)
c152c796 5712 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5713 return FALSE;
f5385ebf
AM
5714 fdh->elf.ref_regular |= fh->elf.ref_regular;
5715 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5716 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5717 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5718 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5719 {
40d16e0b 5720 move_plt_plist (fh, fdh);
f5385ebf 5721 fdh->elf.needs_plt = 1;
e86ce104 5722 }
50bc7936 5723 fdh->is_func_descriptor = 1;
34814b9f
AM
5724 fdh->oh = fh;
5725 fh->oh = fdh;
e86ce104
AM
5726 }
5727
50bc7936
AM
5728 /* Now that the info is on the function descriptor, clear the
5729 function code sym info. Any function code syms for which we
5730 don't have a definition in a regular file, we force local.
5731 This prevents a shared library from exporting syms that have
5732 been imported from another library. Function code syms that
5733 are really in the library we must leave global to prevent the
5734 linker dragging in a definition from a static library. */
93f3fa99
AM
5735 force_local = (!fh->elf.def_regular
5736 || fdh == NULL
5737 || !fdh->elf.def_regular
5738 || fdh->elf.forced_local);
50bc7936
AM
5739 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5740
b34976b6 5741 return TRUE;
e86ce104 5742}
40b8271b 5743
e86ce104 5744/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM
5745 this hook to a) provide some gcc support functions, and b) transfer
5746 dynamic linking information gathered so far on function code symbol
5747 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5748
b34976b6 5749static bfd_boolean
4ce794b7
AM
5750ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5751 struct bfd_link_info *info)
e86ce104
AM
5752{
5753 struct ppc_link_hash_table *htab;
82bd7b59 5754 unsigned int i;
deb0e272
AM
5755 const struct sfpr_def_parms funcs[] =
5756 {
5757 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5758 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5759 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5760 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5761 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5762 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5763 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5764 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5765 { "._savef", 14, 31, savefpr, savefpr1_tail },
5766 { "._restf", 14, 31, restfpr, restfpr1_tail },
5767 { "_savevr_", 20, 31, savevr, savevr_tail },
5768 { "_restvr_", 20, 31, restvr, restvr_tail }
5769 };
e86ce104
AM
5770
5771 htab = ppc_hash_table (info);
82bd7b59
AM
5772 if (htab->sfpr == NULL)
5773 /* We don't have any relocs. */
b34976b6 5774 return TRUE;
82bd7b59 5775
deb0e272
AM
5776 /* Provide any missing _save* and _rest* functions. */
5777 htab->sfpr->size = 0;
5778 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5779 if (!sfpr_define (info, &funcs[i]))
5780 return FALSE;
82bd7b59 5781
4ce794b7 5782 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5783
eea6121a 5784 if (htab->sfpr->size == 0)
8423293d 5785 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5786
b34976b6 5787 return TRUE;
e86ce104
AM
5788}
5789
5790/* Adjust a symbol defined by a dynamic object and referenced by a
5791 regular object. The current definition is in some section of the
5792 dynamic object, but we're not including those sections. We have to
5793 change the definition to something the rest of the link can
5794 understand. */
5795
b34976b6 5796static bfd_boolean
4ce794b7
AM
5797ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5798 struct elf_link_hash_entry *h)
e86ce104
AM
5799{
5800 struct ppc_link_hash_table *htab;
e86ce104
AM
5801 asection *s;
5802 unsigned int power_of_two;
5803
5804 htab = ppc_hash_table (info);
5805
5806 /* Deal with function syms. */
5807 if (h->type == STT_FUNC
f5385ebf 5808 || h->needs_plt)
e86ce104
AM
5809 {
5810 /* Clear procedure linkage table information for any symbol that
5811 won't need a .plt entry. */
411e1bfb
AM
5812 struct plt_entry *ent;
5813 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5814 if (ent->plt.refcount > 0)
5815 break;
8387904d 5816 if (ent == NULL
9c7a29a3
AM
5817 || SYMBOL_CALLS_LOCAL (info, h)
5818 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5819 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5820 {
411e1bfb 5821 h->plt.plist = NULL;
f5385ebf 5822 h->needs_plt = 0;
40b8271b 5823 }
5bd4f169 5824 }
bbd7ec4a 5825 else
411e1bfb 5826 h->plt.plist = NULL;
5bd4f169
AM
5827
5828 /* If this is a weak symbol, and there is a real definition, the
5829 processor independent code will have arranged for us to see the
5830 real definition first, and we can just use the same value. */
f6e332e6 5831 if (h->u.weakdef != NULL)
5bd4f169 5832 {
f6e332e6
AM
5833 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5834 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5835 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5836 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5837 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5838 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5839 return TRUE;
5bd4f169
AM
5840 }
5841
5bd4f169
AM
5842 /* If we are creating a shared library, we must presume that the
5843 only references to the symbol are via the global offset table.
5844 For such cases we need not do anything here; the relocations will
5845 be handled correctly by relocate_section. */
5846 if (info->shared)
b34976b6 5847 return TRUE;
5bd4f169 5848
65f38f15
AM
5849 /* If there are no references to this symbol that do not use the
5850 GOT, we don't need to generate a copy reloc. */
f5385ebf 5851 if (!h->non_got_ref)
b34976b6 5852 return TRUE;
65f38f15 5853
f4656909 5854 if (ELIMINATE_COPY_RELOCS)
65f38f15 5855 {
f4656909
AM
5856 struct ppc_link_hash_entry * eh;
5857 struct ppc_dyn_relocs *p;
65f38f15 5858
f4656909
AM
5859 eh = (struct ppc_link_hash_entry *) h;
5860 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5861 {
5862 s = p->sec->output_section;
5863 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5864 break;
5865 }
5866
5867 /* If we didn't find any dynamic relocs in read-only sections, then
5868 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5869 if (p == NULL)
5870 {
f5385ebf 5871 h->non_got_ref = 0;
f4656909
AM
5872 return TRUE;
5873 }
65f38f15
AM
5874 }
5875
5d35169e 5876 if (h->plt.plist != NULL)
97b639ba
AM
5877 {
5878 /* We should never get here, but unfortunately there are versions
5879 of gcc out there that improperly (for this ABI) put initialized
5880 function pointers, vtable refs and suchlike in read-only
5881 sections. Allow them to proceed, but warn that this might
5882 break at runtime. */
5883 (*_bfd_error_handler)
5884 (_("copy reloc against `%s' requires lazy plt linking; "
5885 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5886 h->root.root.string);
5887 }
5d35169e
AM
5888
5889 /* This is a reference to a symbol defined by a dynamic object which
5890 is not a function. */
5891
909272ee
AM
5892 if (h->size == 0)
5893 {
5894 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5895 h->root.root.string);
5896 return TRUE;
5897 }
5898
5bd4f169
AM
5899 /* We must allocate the symbol in our .dynbss section, which will
5900 become part of the .bss section of the executable. There will be
5901 an entry for this symbol in the .dynsym section. The dynamic
5902 object will contain position independent code, so all references
5903 from the dynamic object to this symbol will go through the global
5904 offset table. The dynamic linker will use the .dynsym entry to
5905 determine the address it must put in the global offset table, so
5906 both the dynamic object and the regular object will refer to the
5907 same memory location for the variable. */
5bd4f169 5908
04c9666a
AM
5909 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5910 to copy the initial value out of the dynamic object and into the
5bd4f169
AM
5911 runtime process image. We need to remember the offset into the
5912 .rela.bss section we are going to use. */
5913 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5914 {
eea6121a 5915 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5916 h->needs_copy = 1;
5bd4f169
AM
5917 }
5918
5919 /* We need to figure out the alignment required for this symbol. I
5920 have no idea how ELF linkers handle this. */
5921 power_of_two = bfd_log2 (h->size);
5922 if (power_of_two > 4)
5923 power_of_two = 4;
5924
5925 /* Apply the required alignment. */
4ce794b7 5926 s = htab->dynbss;
eea6121a 5927 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
65f38f15 5928 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
5bd4f169 5929 {
65f38f15 5930 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
b34976b6 5931 return FALSE;
5bd4f169
AM
5932 }
5933
5934 /* Define the symbol as being at this point in the section. */
5935 h->root.u.def.section = s;
eea6121a 5936 h->root.u.def.value = s->size;
5bd4f169
AM
5937
5938 /* Increment the section size to make room for the symbol. */
eea6121a 5939 s->size += h->size;
5bd4f169 5940
b34976b6 5941 return TRUE;
5bd4f169
AM
5942}
5943
e86ce104
AM
5944/* If given a function descriptor symbol, hide both the function code
5945 sym and the descriptor. */
5946static void
4ce794b7
AM
5947ppc64_elf_hide_symbol (struct bfd_link_info *info,
5948 struct elf_link_hash_entry *h,
5949 bfd_boolean force_local)
e86ce104 5950{
34814b9f 5951 struct ppc_link_hash_entry *eh;
e86ce104
AM
5952 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5953
34814b9f
AM
5954 eh = (struct ppc_link_hash_entry *) h;
5955 if (eh->is_func_descriptor)
e86ce104 5956 {
34814b9f 5957 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5958
721956f4 5959 if (fh == NULL)
d1329ca3
AM
5960 {
5961 const char *p, *q;
5962 struct ppc_link_hash_table *htab;
5963 char save;
5964
5965 /* We aren't supposed to use alloca in BFD because on
5966 systems which do not have alloca the version in libiberty
5967 calls xmalloc, which might cause the program to crash
5968 when it runs out of memory. This function doesn't have a
5969 return status, so there's no way to gracefully return an
5970 error. So cheat. We know that string[-1] can be safely
34814b9f
AM
5971 accessed; It's either a string in an ELF string table,
5972 or allocated in an objalloc structure. */
d1329ca3 5973
34814b9f 5974 p = eh->elf.root.root.string - 1;
d1329ca3
AM
5975 save = *p;
5976 *(char *) p = '.';
5977 htab = ppc_hash_table (info);
34814b9f
AM
5978 fh = (struct ppc_link_hash_entry *)
5979 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
5980 *(char *) p = save;
5981
5982 /* Unfortunately, if it so happens that the string we were
5983 looking for was allocated immediately before this string,
5984 then we overwrote the string terminator. That's the only
5985 reason the lookup should fail. */
5986 if (fh == NULL)
5987 {
34814b9f
AM
5988 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5989 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5990 --q, --p;
34814b9f
AM
5991 if (q < eh->elf.root.root.string && *p == '.')
5992 fh = (struct ppc_link_hash_entry *)
5993 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
5994 }
5995 if (fh != NULL)
5996 {
34814b9f
AM
5997 eh->oh = fh;
5998 fh->oh = eh;
d1329ca3
AM
5999 }
6000 }
e86ce104 6001 if (fh != NULL)
34814b9f 6002 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM
6003 }
6004}
6005
411e1bfb 6006static bfd_boolean
8843416a
AM
6007get_sym_h (struct elf_link_hash_entry **hp,
6008 Elf_Internal_Sym **symp,
6009 asection **symsecp,
6010 char **tls_maskp,
6011 Elf_Internal_Sym **locsymsp,
6012 unsigned long r_symndx,
6013 bfd *ibfd)
411e1bfb
AM
6014{
6015 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6016
6017 if (r_symndx >= symtab_hdr->sh_info)
6018 {
6019 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6020 struct elf_link_hash_entry *h;
6021
6022 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6023 while (h->root.type == bfd_link_hash_indirect
6024 || h->root.type == bfd_link_hash_warning)
6025 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6026
6027 if (hp != NULL)
6028 *hp = h;
6029
6030 if (symp != NULL)
6031 *symp = NULL;
6032
6033 if (symsecp != NULL)
6034 {
6035 asection *symsec = NULL;
6036 if (h->root.type == bfd_link_hash_defined
6037 || h->root.type == bfd_link_hash_defweak)
6038 symsec = h->root.u.def.section;
6039 *symsecp = symsec;
6040 }
6041
e7b938ca 6042 if (tls_maskp != NULL)
411e1bfb
AM
6043 {
6044 struct ppc_link_hash_entry *eh;
6045
6046 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6047 *tls_maskp = &eh->tls_mask;
411e1bfb
AM
6048 }
6049 }
6050 else
6051 {
6052 Elf_Internal_Sym *sym;
6053 Elf_Internal_Sym *locsyms = *locsymsp;
6054
6055 if (locsyms == NULL)
6056 {
6057 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6058 if (locsyms == NULL)
6059 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6060 symtab_hdr->sh_info,
6061 0, NULL, NULL, NULL);
6062 if (locsyms == NULL)
6063 return FALSE;
6064 *locsymsp = locsyms;
6065 }
6066 sym = locsyms + r_symndx;
6067
6068 if (hp != NULL)
6069 *hp = NULL;
6070
6071 if (symp != NULL)
6072 *symp = sym;
6073
6074 if (symsecp != NULL)
6075 {
6076 asection *symsec = NULL;
6077 if ((sym->st_shndx != SHN_UNDEF
6078 && sym->st_shndx < SHN_LORESERVE)
6079 || sym->st_shndx > SHN_HIRESERVE)
6080 symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
6081 *symsecp = symsec;
6082 }
6083
e7b938ca 6084 if (tls_maskp != NULL)
411e1bfb
AM
6085 {
6086 struct got_entry **lgot_ents;
e7b938ca 6087 char *tls_mask;
411e1bfb 6088
e7b938ca 6089 tls_mask = NULL;
411e1bfb
AM
6090 lgot_ents = elf_local_got_ents (ibfd);
6091 if (lgot_ents != NULL)
6092 {
e7b938ca
AM
6093 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6094 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6095 }
e7b938ca 6096 *tls_maskp = tls_mask;
411e1bfb
AM
6097 }
6098 }
6099 return TRUE;
6100}
6101
e7b938ca 6102/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6103 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6104 type suitable for optimization, and 1 otherwise. */
951fd09b
AM
6105
6106static int
0d4792f7
AM
6107get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6108 Elf_Internal_Sym **locsymsp,
4ce794b7 6109 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM
6110{
6111 unsigned long r_symndx;
0d4792f7 6112 int next_r;
411e1bfb
AM
6113 struct elf_link_hash_entry *h;
6114 Elf_Internal_Sym *sym;
6115 asection *sec;
6116 bfd_vma off;
6117
6118 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6119 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6120 return 0;
411e1bfb 6121
e7b938ca 6122 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6123 || sec == NULL
7c8fe5c4 6124 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6125 return 1;
411e1bfb
AM
6126
6127 /* Look inside a TOC section too. */
6128 if (h != NULL)
6129 {
6130 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6131 off = h->root.u.def.value;
6132 }
6133 else
6134 off = sym->st_value;
6135 off += rel->r_addend;
6136 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM
6137 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6138 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6139 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6140 return 0;
0d4792f7
AM
6141 if (toc_symndx != NULL)
6142 *toc_symndx = r_symndx;
6143 if ((h == NULL
6144 || ((h->root.type == bfd_link_hash_defined
6145 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6146 && !h->def_dynamic))
0d4792f7
AM
6147 && (next_r == -1 || next_r == -2))
6148 return 1 - next_r;
951fd09b 6149 return 1;
411e1bfb
AM
6150}
6151
754021d0 6152/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6153 code for the old ABI, these will already have been done. */
754021d0
AM
6154
6155static bfd_boolean
6156adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6157{
6158 struct ppc_link_hash_entry *eh;
6159 asection *sym_sec;
6160 long *opd_adjust;
6161
6162 if (h->root.type == bfd_link_hash_indirect)
6163 return TRUE;
6164
6165 if (h->root.type == bfd_link_hash_warning)
6166 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6167
6168 if (h->root.type != bfd_link_hash_defined
6169 && h->root.type != bfd_link_hash_defweak)
6170 return TRUE;
6171
6172 eh = (struct ppc_link_hash_entry *) h;
6173 if (eh->adjust_done)
6174 return TRUE;
6175
6176 sym_sec = eh->elf.root.u.def.section;
4025353c
AM
6177 opd_adjust = get_opd_info (sym_sec);
6178 if (opd_adjust != NULL)
754021d0 6179 {
3f764659 6180 long adjust = opd_adjust[eh->elf.root.u.def.value / 8];
4025353c
AM
6181 if (adjust == -1)
6182 {
6183 /* This entry has been deleted. */
b3fac117 6184 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM
6185 if (dsec == NULL)
6186 {
6187 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6188 if (elf_discarded_section (dsec))
6189 {
b3fac117 6190 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM
6191 break;
6192 }
6193 }
4025353c 6194 eh->elf.root.u.def.value = 0;
81688140 6195 eh->elf.root.u.def.section = dsec;
4025353c
AM
6196 }
6197 else
6198 eh->elf.root.u.def.value += adjust;
754021d0
AM
6199 eh->adjust_done = 1;
6200 }
6201 return TRUE;
6202}
6203
8c1d1bb8
AM
6204/* Handles decrementing dynamic reloc counts for the reloc specified by
6205 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6206 have already been determined. */
6207
6208static bfd_boolean
6209dec_dynrel_count (bfd_vma r_info,
6210 asection *sec,
6211 struct bfd_link_info *info,
6212 Elf_Internal_Sym **local_syms,
6213 struct elf_link_hash_entry *h,
6214 asection *sym_sec)
6215{
6216 enum elf_ppc64_reloc_type r_type;
6217 struct ppc_dyn_relocs *p;
6218 struct ppc_dyn_relocs **pp;
6219
6220 /* Can this reloc be dynamic? This switch, and later tests here
6221 should be kept in sync with the code in check_relocs. */
6222 r_type = ELF64_R_TYPE (r_info);
6223 switch (r_type)
6224 {
6225 default:
6226 return TRUE;
6227
6228 case R_PPC64_TPREL16:
6229 case R_PPC64_TPREL16_LO:
6230 case R_PPC64_TPREL16_HI:
6231 case R_PPC64_TPREL16_HA:
6232 case R_PPC64_TPREL16_DS:
6233 case R_PPC64_TPREL16_LO_DS:
6234 case R_PPC64_TPREL16_HIGHER:
6235 case R_PPC64_TPREL16_HIGHERA:
6236 case R_PPC64_TPREL16_HIGHEST:
6237 case R_PPC64_TPREL16_HIGHESTA:
6238 if (!info->shared)
6239 return TRUE;
6240
6241 case R_PPC64_TPREL64:
6242 case R_PPC64_DTPMOD64:
6243 case R_PPC64_DTPREL64:
6244 case R_PPC64_ADDR64:
6245 case R_PPC64_REL30:
6246 case R_PPC64_REL32:
6247 case R_PPC64_REL64:
6248 case R_PPC64_ADDR14:
6249 case R_PPC64_ADDR14_BRNTAKEN:
6250 case R_PPC64_ADDR14_BRTAKEN:
6251 case R_PPC64_ADDR16:
6252 case R_PPC64_ADDR16_DS:
6253 case R_PPC64_ADDR16_HA:
6254 case R_PPC64_ADDR16_HI:
6255 case R_PPC64_ADDR16_HIGHER:
6256 case R_PPC64_ADDR16_HIGHERA:
6257 case R_PPC64_ADDR16_HIGHEST:
6258 case R_PPC64_ADDR16_HIGHESTA:
6259 case R_PPC64_ADDR16_LO:
6260 case R_PPC64_ADDR16_LO_DS:
6261 case R_PPC64_ADDR24:
6262 case R_PPC64_ADDR32:
6263 case R_PPC64_UADDR16:
6264 case R_PPC64_UADDR32:
6265 case R_PPC64_UADDR64:
6266 case R_PPC64_TOC:
6267 break;
6268 }
6269
6270 if (local_syms != NULL)
6271 {
6272 unsigned long r_symndx;
6273 Elf_Internal_Sym *sym;
6274 bfd *ibfd = sec->owner;
6275
6276 r_symndx = ELF64_R_SYM (r_info);
6277 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6278 return FALSE;
6279 }
6280
6281 if ((info->shared
6282 && (MUST_BE_DYN_RELOC (r_type)
6283 || (h != NULL
6284 && (!info->symbolic
6285 || h->root.type == bfd_link_hash_defweak
6286 || !h->def_regular))))
6287 || (ELIMINATE_COPY_RELOCS
6288 && !info->shared
6289 && h != NULL
6290 && (h->root.type == bfd_link_hash_defweak
6291 || !h->def_regular)))
6292 ;
6293 else
6294 return TRUE;
6295
6296 if (h != NULL)
6297 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6298 else
6edfbbad 6299 {
60124e18
AM
6300 if (sym_sec != NULL)
6301 {
6302 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6303 pp = (struct ppc_dyn_relocs **) vpp;
6304 }
6305 else
6306 {
6307 void *vpp = &elf_section_data (sec)->local_dynrel;
6308 pp = (struct ppc_dyn_relocs **) vpp;
6309 }
6310
6311 /* elf_gc_sweep may have already removed all dyn relocs associated
6312 with local syms for a given section. Don't report a dynreloc
6313 miscount. */
6314 if (*pp == NULL)
6315 return TRUE;
6edfbbad 6316 }
8c1d1bb8
AM
6317
6318 while ((p = *pp) != NULL)
6319 {
6320 if (p->sec == sec)
6321 {
6322 if (!MUST_BE_DYN_RELOC (r_type))
6323 p->pc_count -= 1;
6324 p->count -= 1;
6325 if (p->count == 0)
6326 *pp = p->next;
6327 return TRUE;
6328 }
6329 pp = &p->next;
6330 }
6331
6332 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6333 sec->owner, sec);
6334 bfd_set_error (bfd_error_bad_value);
6335 return FALSE;
6336}
6337
754021d0
AM
6338/* Remove unused Official Procedure Descriptor entries. Currently we
6339 only remove those associated with functions in discarded link-once
6340 sections, or weakly defined functions that have been overridden. It
6341 would be possible to remove many more entries for statically linked
6342 applications. */
6343
b34976b6 6344bfd_boolean
3f764659 6345ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
b4f4e59f 6346 bfd_boolean no_opd_opt,
3f764659 6347 bfd_boolean non_overlapping)
1e2f5b6e
AM
6348{
6349 bfd *ibfd;
754021d0 6350 bfd_boolean some_edited = FALSE;
3f764659 6351 asection *need_pad = NULL;
1e2f5b6e 6352
411e1bfb 6353 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM
6354 {
6355 asection *sec;
6356 Elf_Internal_Rela *relstart, *rel, *relend;
6357 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6358 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM
6359 struct elf_link_hash_entry **sym_hashes;
6360 bfd_vma offset;
d6fe2dc1 6361 bfd_size_type amt;
4025353c 6362 long *opd_adjust;
3f764659
JJ
6363 bfd_boolean need_edit, add_aux_fields;
6364 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM
6365
6366 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6367 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM
6368 continue;
6369
3f764659 6370 amt = sec->size * sizeof (long) / 8;
4025353c
AM
6371 opd_adjust = get_opd_info (sec);
6372 if (opd_adjust == NULL)
d6fe2dc1 6373 {
4b85d634
AM
6374 /* check_relocs hasn't been called. Must be a ld -r link
6375 or --just-symbols object. */
b4f4e59f 6376 opd_adjust = bfd_alloc (obfd, amt);
46de2a7c
AM
6377 if (opd_adjust == NULL)
6378 return FALSE;
7c8fe5c4
AM
6379 ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust;
6380 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
6381 ppc64_elf_section_data (sec)->sec_type = sec_opd;
d6fe2dc1 6382 }
4025353c 6383 memset (opd_adjust, 0, amt);
1e2f5b6e 6384
b4f4e59f
AM
6385 if (no_opd_opt)
6386 continue;
6387
4b85d634
AM
6388 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6389 continue;
6390
1e2f5b6e
AM
6391 if (sec->output_section == bfd_abs_section_ptr)
6392 continue;
6393
6394 /* Look through the section relocs. */
6395 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6396 continue;
6397
6cdc0ccc 6398 local_syms = NULL;
1e2f5b6e
AM
6399 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
6400 sym_hashes = elf_sym_hashes (ibfd);
6401
6402 /* Read the relocations. */
4ce794b7 6403 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6404 info->keep_memory);
1e2f5b6e 6405 if (relstart == NULL)
b34976b6 6406 return FALSE;
1e2f5b6e
AM
6407
6408 /* First run through the relocs to check they are sane, and to
6409 determine whether we need to edit this opd section. */
b34976b6 6410 need_edit = FALSE;
3f764659 6411 need_pad = sec;
1e2f5b6e
AM
6412 offset = 0;
6413 relend = relstart + sec->reloc_count;
50bc7936 6414 for (rel = relstart; rel < relend; )
1e2f5b6e 6415 {
04c9666a 6416 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM
6417 unsigned long r_symndx;
6418 asection *sym_sec;
6419 struct elf_link_hash_entry *h;
6420 Elf_Internal_Sym *sym;
6421
3f764659 6422 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM
6423 only interested in the reloc pointing to a function entry
6424 point. */
50bc7936
AM
6425 if (rel->r_offset != offset
6426 || rel + 1 >= relend
6427 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM
6428 {
6429 /* If someone messes with .opd alignment then after a
6430 "ld -r" we might have padding in the middle of .opd.
6431 Also, there's nothing to prevent someone putting
6432 something silly in .opd with the assembler. No .opd
b34976b6 6433 optimization for them! */
3f764659 6434 broken_opd:
1e2f5b6e 6435 (*_bfd_error_handler)
d003868e 6436 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6437 need_edit = FALSE;
1e2f5b6e
AM
6438 break;
6439 }
6440
50bc7936
AM
6441 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6442 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6443 {
6444 (*_bfd_error_handler)
d003868e
AM
6445 (_("%B: unexpected reloc type %u in .opd section"),
6446 ibfd, r_type);
50bc7936
AM
6447 need_edit = FALSE;
6448 break;
6449 }
6450
1e2f5b6e 6451 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM
6452 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6453 r_symndx, ibfd))
50bc7936 6454 goto error_ret;
1e2f5b6e
AM
6455
6456 if (sym_sec == NULL || sym_sec->owner == NULL)
6457 {
411e1bfb
AM
6458 const char *sym_name;
6459 if (h != NULL)
6460 sym_name = h->root.root.string;
6461 else
26c61ae5
L
6462 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6463 sym_sec);
411e1bfb 6464
1e2f5b6e 6465 (*_bfd_error_handler)
d003868e
AM
6466 (_("%B: undefined sym `%s' in .opd section"),
6467 ibfd, sym_name);
b34976b6 6468 need_edit = FALSE;
1e2f5b6e
AM
6469 break;
6470 }
6471
51020317
AM
6472 /* opd entries are always for functions defined in the
6473 current input bfd. If the symbol isn't defined in the
6474 input bfd, then we won't be using the function in this
6475 bfd; It must be defined in a linkonce section in another
6476 bfd, or is weak. It's also possible that we are
6477 discarding the function due to a linker script /DISCARD/,
6478 which we test for via the output_section. */
6479 if (sym_sec->owner != ibfd
6480 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6481 need_edit = TRUE;
1e2f5b6e 6482
50bc7936 6483 rel += 2;
3f764659
JJ
6484 if (rel == relend
6485 || (rel + 1 == relend && rel->r_offset == offset + 16))
6486 {
6487 if (sec->size == offset + 24)
6488 {
6489 need_pad = NULL;
6490 break;
6491 }
6492 if (rel == relend && sec->size == offset + 16)
6493 {
6494 cnt_16b++;
6495 break;
6496 }
6497 goto broken_opd;
6498 }
6499
6500 if (rel->r_offset == offset + 24)
6501 offset += 24;
6502 else if (rel->r_offset != offset + 16)
6503 goto broken_opd;
6504 else if (rel + 1 < relend
6505 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6506 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6507 {
6508 offset += 16;
6509 cnt_16b++;
6510 }
6511 else if (rel + 2 < relend
6512 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6513 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6514 {
6515 offset += 24;
6516 rel += 1;
6517 }
6518 else
6519 goto broken_opd;
1e2f5b6e
AM
6520 }
6521
3f764659
JJ
6522 add_aux_fields = non_overlapping && cnt_16b > 0;
6523
6524 if (need_edit || add_aux_fields)
1e2f5b6e
AM
6525 {
6526 Elf_Internal_Rela *write_rel;
6527 bfd_byte *rptr, *wptr;
3f764659 6528 bfd_byte *new_contents = NULL;
b34976b6 6529 bfd_boolean skip;
3f764659 6530 long opd_ent_size;
1e2f5b6e
AM
6531
6532 /* This seems a waste of time as input .opd sections are all
6533 zeros as generated by gcc, but I suppose there's no reason
6534 this will always be so. We might start putting something in
6535 the third word of .opd entries. */
6536 if ((sec->flags & SEC_IN_MEMORY) == 0)
6537 {
eea6121a
AM
6538 bfd_byte *loc;
6539 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6540 {
eea6121a
AM
6541 if (loc != NULL)
6542 free (loc);
50bc7936 6543 error_ret:
6cdc0ccc
AM
6544 if (local_syms != NULL
6545 && symtab_hdr->contents != (unsigned char *) local_syms)
6546 free (local_syms);
6cdc0ccc
AM
6547 if (elf_section_data (sec)->relocs != relstart)
6548 free (relstart);
b34976b6 6549 return FALSE;
6cdc0ccc 6550 }
1e2f5b6e
AM
6551 sec->contents = loc;
6552 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6553 }
6554
6555 elf_section_data (sec)->relocs = relstart;
6556
3f764659 6557 new_contents = sec->contents;
3f764659
JJ
6558 if (add_aux_fields)
6559 {
6560 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6561 if (new_contents == NULL)
6562 return FALSE;
6563 need_pad = FALSE;
3f764659 6564 }
b4f4e59f
AM
6565 wptr = new_contents;
6566 rptr = sec->contents;
3f764659 6567
1e2f5b6e 6568 write_rel = relstart;
b34976b6 6569 skip = FALSE;
1e2f5b6e 6570 offset = 0;
3f764659 6571 opd_ent_size = 0;
1e2f5b6e
AM
6572 for (rel = relstart; rel < relend; rel++)
6573 {
50bc7936
AM
6574 unsigned long r_symndx;
6575 asection *sym_sec;
6576 struct elf_link_hash_entry *h;
6577 Elf_Internal_Sym *sym;
6578
6579 r_symndx = ELF64_R_SYM (rel->r_info);
6580 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6581 r_symndx, ibfd))
50bc7936
AM
6582 goto error_ret;
6583
1e2f5b6e
AM
6584 if (rel->r_offset == offset)
6585 {
50bc7936 6586 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ
6587
6588 /* See if the .opd entry is full 24 byte or
6589 16 byte (with fd_aux entry overlapped with next
6590 fd_func). */
6591 opd_ent_size = 24;
6592 if ((rel + 2 == relend && sec->size == offset + 16)
6593 || (rel + 3 < relend
6594 && rel[2].r_offset == offset + 16
6595 && rel[3].r_offset == offset + 24
6596 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6597 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6598 opd_ent_size = 16;
6599
4025353c
AM
6600 if (h != NULL
6601 && h->root.root.string[0] == '.')
c4f68ce3
AM
6602 {
6603 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6604 ppc_hash_table (info));
6605 if (fdh != NULL
6606 && fdh->elf.root.type != bfd_link_hash_defined
6607 && fdh->elf.root.type != bfd_link_hash_defweak)
6608 fdh = NULL;
6609 }
1e2f5b6e 6610
51020317
AM
6611 skip = (sym_sec->owner != ibfd
6612 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM
6613 if (skip)
6614 {
4025353c 6615 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM
6616 {
6617 /* Arrange for the function descriptor sym
6618 to be dropped. */
d6fe2dc1
AM
6619 fdh->elf.root.u.def.value = 0;
6620 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6621 }
3f764659 6622 opd_adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM
6623 }
6624 else
1e2f5b6e
AM
6625 {
6626 /* We'll be keeping this opd entry. */
6627
4025353c 6628 if (fdh != NULL)
1e2f5b6e 6629 {
754021d0
AM
6630 /* Redefine the function descriptor symbol to
6631 this location in the opd section. It is
6632 necessary to update the value here rather
6633 than using an array of adjustments as we do
6634 for local symbols, because various places
6635 in the generic ELF code use the value
6636 stored in u.def.value. */
3f764659 6637 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6638 fdh->adjust_done = 1;
1e2f5b6e 6639 }
754021d0
AM
6640
6641 /* Local syms are a bit tricky. We could
6642 tweak them as they can be cached, but
6643 we'd need to look through the local syms
6644 for the function descriptor sym which we
6645 don't have at the moment. So keep an
6646 array of adjustments. */
3f764659
JJ
6647 opd_adjust[rel->r_offset / 8]
6648 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM
6649
6650 if (wptr != rptr)
3f764659
JJ
6651 memcpy (wptr, rptr, opd_ent_size);
6652 wptr += opd_ent_size;
6653 if (add_aux_fields && opd_ent_size == 16)
6654 {
6655 memset (wptr, '\0', 8);
6656 wptr += 8;
6657 }
1e2f5b6e 6658 }
3f764659
JJ
6659 rptr += opd_ent_size;
6660 offset += opd_ent_size;
1e2f5b6e
AM
6661 }
6662
50bc7936
AM
6663 if (skip)
6664 {
60124e18
AM
6665 if (!NO_OPD_RELOCS
6666 && !info->relocatable
18d944df
AM
6667 && !dec_dynrel_count (rel->r_info, sec, info,
6668 NULL, h, sym_sec))
8c1d1bb8 6669 goto error_ret;
50bc7936
AM
6670 }
6671 else
1e2f5b6e 6672 {
50bc7936
AM
6673 /* We need to adjust any reloc offsets to point to the
6674 new opd entries. While we're at it, we may as well
6675 remove redundant relocs. */
3f764659 6676 rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM
6677 if (write_rel != rel)
6678 memcpy (write_rel, rel, sizeof (*rel));
6679 ++write_rel;
6680 }
6681 }
6682
3f764659 6683 sec->size = wptr - new_contents;
1e2f5b6e 6684 sec->reloc_count = write_rel - relstart;
3f764659
JJ
6685 if (add_aux_fields)
6686 {
6687 free (sec->contents);
6688 sec->contents = new_contents;
6689 }
6690
05bf9422 6691 /* Fudge the header size too, as this is used later in
cdcf6e38
AM
6692 elf_bfd_final_link if we are emitting relocs. */
6693 elf_section_data (sec)->rel_hdr.sh_size
6694 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6695 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6696 some_edited = TRUE;
1e2f5b6e 6697 }
6cdc0ccc 6698 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6699 free (relstart);
6cdc0ccc 6700
411e1bfb
AM
6701 if (local_syms != NULL
6702 && symtab_hdr->contents != (unsigned char *) local_syms)
6703 {
6704 if (!info->keep_memory)
6705 free (local_syms);
6706 else
6707 symtab_hdr->contents = (unsigned char *) local_syms;
6708 }
6709 }
6710
754021d0
AM
6711 if (some_edited)
6712 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6713
3f764659
JJ
6714 /* If we are doing a final link and the last .opd entry is just 16 byte
6715 long, add a 8 byte padding after it. */
6716 if (need_pad != NULL && !info->relocatable)
6717 {
6718 bfd_byte *p;
6719
6720 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6721 {
6722 BFD_ASSERT (need_pad->size > 0);
6723
6724 p = bfd_malloc (need_pad->size + 8);
6725 if (p == NULL)
6726 return FALSE;
699733f6 6727
3f764659
JJ
6728 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6729 p, 0, need_pad->size))
6730 return FALSE;
6731
6732 need_pad->contents = p;
6733 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6734 }
6735 else
6736 {
6737 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6738 if (p == NULL)
6739 return FALSE;
6740
6741 need_pad->contents = p;
6742 }
6743
6744 memset (need_pad->contents + need_pad->size, 0, 8);
6745 need_pad->size += 8;
6746 }
6747
411e1bfb
AM
6748 return TRUE;
6749}
6750
e1918d23 6751/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6752
e1918d23 6753asection *
4ce794b7 6754ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6755{
411e1bfb
AM
6756 struct ppc_link_hash_table *htab;
6757
411e1bfb 6758 htab = ppc_hash_table (info);
a48ebf4d
AM
6759 if (htab->tls_get_addr != NULL)
6760 {
8387904d 6761 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6762
8387904d
AM
6763 while (h->elf.root.type == bfd_link_hash_indirect
6764 || h->elf.root.type == bfd_link_hash_warning)
6765 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM
6766
6767 htab->tls_get_addr = h;
8387904d
AM
6768
6769 if (htab->tls_get_addr_fd == NULL
6770 && h->oh != NULL
c4f68ce3
AM
6771 && h->oh->is_func_descriptor
6772 && (h->oh->elf.root.type == bfd_link_hash_defined
6773 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM
6774 htab->tls_get_addr_fd = h->oh;
6775 }
6776
6777 if (htab->tls_get_addr_fd != NULL)
6778 {
6779 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6780
6781 while (h->elf.root.type == bfd_link_hash_indirect
6782 || h->elf.root.type == bfd_link_hash_warning)
6783 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6784
6785 htab->tls_get_addr_fd = h;
a48ebf4d
AM
6786 }
6787
e1918d23 6788 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6789}
411e1bfb 6790
951fd09b
AM
6791/* Run through all the TLS relocs looking for optimization
6792 opportunities. The linker has been hacked (see ppc64elf.em) to do
6793 a preliminary section layout so that we know the TLS segment
6794 offsets. We can't optimize earlier because some optimizations need
6795 to know the tp offset, and we need to optimize before allocating
6796 dynamic relocations. */
6797
6798bfd_boolean
4ce794b7 6799ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM
6800{
6801 bfd *ibfd;
6802 asection *sec;
6803 struct ppc_link_hash_table *htab;
6804
1049f94e 6805 if (info->relocatable || info->shared)
411e1bfb
AM
6806 return TRUE;
6807
951fd09b 6808 htab = ppc_hash_table (info);
411e1bfb
AM
6809 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6810 {
6811 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM
6812 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6813 unsigned char *toc_ref = NULL;
411e1bfb 6814
30038c59
AM
6815 /* Look at all the sections for this file, with TOC last. */
6816 for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next
6817 : ibfd->sections);
6818 sec != NULL;
6819 sec = (sec == toc ? NULL
6820 : sec->next == NULL ? toc
6821 : sec->next == toc && toc->next ? toc->next
6822 : sec->next))
411e1bfb
AM
6823 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6824 {
6825 Elf_Internal_Rela *relstart, *rel, *relend;
6826 int expecting_tls_get_addr;
30038c59 6827 long toc_ref_index = 0;
411e1bfb
AM
6828
6829 /* Read the relocations. */
4ce794b7 6830 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6831 info->keep_memory);
411e1bfb
AM
6832 if (relstart == NULL)
6833 return FALSE;
6834
6835 expecting_tls_get_addr = 0;
6836 relend = relstart + sec->reloc_count;
6837 for (rel = relstart; rel < relend; rel++)
6838 {
6839 enum elf_ppc64_reloc_type r_type;
6840 unsigned long r_symndx;
6841 struct elf_link_hash_entry *h;
6842 Elf_Internal_Sym *sym;
6843 asection *sym_sec;
e7b938ca
AM
6844 char *tls_mask;
6845 char tls_set, tls_clear, tls_type = 0;
411e1bfb 6846 bfd_vma value;
951fd09b 6847 bfd_boolean ok_tprel, is_local;
411e1bfb
AM
6848
6849 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6850 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
411e1bfb
AM
6851 r_symndx, ibfd))
6852 {
6853 err_free_rel:
6854 if (elf_section_data (sec)->relocs != relstart)
6855 free (relstart);
30038c59
AM
6856 if (toc_ref != NULL)
6857 free (toc_ref);
411e1bfb
AM
6858 if (locsyms != NULL
6859 && (elf_tdata (ibfd)->symtab_hdr.contents
6860 != (unsigned char *) locsyms))
6861 free (locsyms);
6862 return FALSE;
6863 }
6864
6865 if (h != NULL)
6866 {
6867 if (h->root.type != bfd_link_hash_defined
6868 && h->root.type != bfd_link_hash_defweak)
6869 continue;
6870 value = h->root.u.def.value;
6871 }
6872 else
4025353c
AM
6873 /* Symbols referenced by TLS relocs must be of type
6874 STT_TLS. So no need for .opd local sym adjust. */
6875 value = sym->st_value;
951fd09b 6876
411e1bfb 6877 ok_tprel = FALSE;
951fd09b
AM
6878 is_local = FALSE;
6879 if (h == NULL
f5385ebf 6880 || !h->def_dynamic)
411e1bfb 6881 {
951fd09b 6882 is_local = TRUE;
411e1bfb
AM
6883 value += sym_sec->output_offset;
6884 value += sym_sec->output_section->vma;
e1918d23 6885 value -= htab->elf.tls_sec->vma;
411e1bfb
AM
6886 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6887 < (bfd_vma) 1 << 32);
6888 }
6889
4ce794b7 6890 r_type = ELF64_R_TYPE (rel->r_info);
411e1bfb
AM
6891 switch (r_type)
6892 {
6893 case R_PPC64_GOT_TLSLD16:
6894 case R_PPC64_GOT_TLSLD16_LO:
6895 case R_PPC64_GOT_TLSLD16_HI:
6896 case R_PPC64_GOT_TLSLD16_HA:
951fd09b
AM
6897 /* These relocs should never be against a symbol
6898 defined in a shared lib. Leave them alone if
6899 that turns out to be the case. */
e717da7e 6900 ppc64_tlsld_got (ibfd)->refcount -= 1;
951fd09b
AM
6901 if (!is_local)
6902 continue;
6903
951fd09b
AM
6904 /* LD -> LE */
6905 tls_set = 0;
6906 tls_clear = TLS_LD;
e7b938ca 6907 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
6908 expecting_tls_get_addr = 1;
6909 break;
6910
6911 case R_PPC64_GOT_TLSGD16:
6912 case R_PPC64_GOT_TLSGD16_LO:
6913 case R_PPC64_GOT_TLSGD16_HI:
6914 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6915 if (ok_tprel)
411e1bfb
AM
6916 /* GD -> LE */
6917 tls_set = 0;
6918 else
6919 /* GD -> IE */
951fd09b
AM
6920 tls_set = TLS_TLS | TLS_TPRELGD;
6921 tls_clear = TLS_GD;
e7b938ca 6922 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
6923 expecting_tls_get_addr = 1;
6924 break;
6925
6926 case R_PPC64_GOT_TPREL16_DS:
6927 case R_PPC64_GOT_TPREL16_LO_DS:
6928 case R_PPC64_GOT_TPREL16_HI:
6929 case R_PPC64_GOT_TPREL16_HA:
6930 expecting_tls_get_addr = 0;
6931 if (ok_tprel)
6932 {
6933 /* IE -> LE */
6934 tls_set = 0;
6935 tls_clear = TLS_TPREL;
e7b938ca 6936 tls_type = TLS_TLS | TLS_TPREL;
411e1bfb
AM
6937 break;
6938 }
6939 else
6940 continue;
6941
6942 case R_PPC64_REL14:
6943 case R_PPC64_REL14_BRTAKEN:
6944 case R_PPC64_REL14_BRNTAKEN:
6945 case R_PPC64_REL24:
6946 if (h != NULL
8387904d
AM
6947 && (h == &htab->tls_get_addr->elf
6948 || h == &htab->tls_get_addr_fd->elf))
411e1bfb
AM
6949 {
6950 if (!expecting_tls_get_addr
6951 && rel != relstart
6952 && ((ELF64_R_TYPE (rel[-1].r_info)
6953 == R_PPC64_TOC16)
6954 || (ELF64_R_TYPE (rel[-1].r_info)
6955 == R_PPC64_TOC16_LO)))
6956 {
6957 /* Check for toc tls entries. */
6958 char *toc_tls;
951fd09b 6959 int retval;
411e1bfb 6960
0d4792f7 6961 retval = get_tls_mask (&toc_tls, NULL, &locsyms,
951fd09b
AM
6962 rel - 1, ibfd);
6963 if (retval == 0)
411e1bfb 6964 goto err_free_rel;
30038c59
AM
6965 if (retval > 1 && toc_tls != NULL)
6966 {
6967 expecting_tls_get_addr = 1;
6968 if (toc_ref != NULL)
6969 toc_ref[toc_ref_index] = 1;
6970 }
411e1bfb
AM
6971 }
6972
6973 if (expecting_tls_get_addr)
6974 {
6975 struct plt_entry *ent;
6976 for (ent = h->plt.plist; ent; ent = ent->next)
6977 if (ent->addend == 0)
6978 {
6979 if (ent->plt.refcount > 0)
6980 ent->plt.refcount -= 1;
6981 break;
6982 }
6983 }
6984 }
6985 expecting_tls_get_addr = 0;
6986 continue;
6987
30038c59
AM
6988 case R_PPC64_TOC16:
6989 case R_PPC64_TOC16_LO:
6990 case R_PPC64_TLS:
6991 expecting_tls_get_addr = 0;
6992 if (sym_sec == toc && toc != NULL)
6993 {
6994 /* Mark this toc entry as referenced by a TLS
6995 code sequence. We can do that now in the
6996 case of R_PPC64_TLS, and after checking for
6997 tls_get_addr for the TOC16 relocs. */
6998 if (toc_ref == NULL)
6999 {
7000 toc_ref = bfd_zmalloc (toc->size / 8);
7001 if (toc_ref == NULL)
7002 goto err_free_rel;
7003 }
7004 if (h != NULL)
7005 value = h->root.u.def.value;
7006 else
7007 value = sym->st_value;
7008 value += rel->r_addend;
7009 BFD_ASSERT (value < toc->size && value % 8 == 0);
7010 toc_ref_index = value / 8;
7011 if (r_type == R_PPC64_TLS)
7012 toc_ref[toc_ref_index] = 1;
7013 }
7014 continue;
7015
411e1bfb
AM
7016 case R_PPC64_TPREL64:
7017 expecting_tls_get_addr = 0;
30038c59
AM
7018 if (sec != toc
7019 || toc_ref == NULL
7020 || !toc_ref[rel->r_offset / 8])
7021 continue;
411e1bfb
AM
7022 if (ok_tprel)
7023 {
7024 /* IE -> LE */
7025 tls_set = TLS_EXPLICIT;
7026 tls_clear = TLS_TPREL;
7027 break;
7028 }
7029 else
7030 continue;
7031
7032 case R_PPC64_DTPMOD64:
7033 expecting_tls_get_addr = 0;
30038c59
AM
7034 if (sec != toc
7035 || toc_ref == NULL
7036 || !toc_ref[rel->r_offset / 8])
7037 continue;
951fd09b
AM
7038 if (rel + 1 < relend
7039 && (rel[1].r_info
7040 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7041 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 7042 {
951fd09b 7043 if (ok_tprel)
411e1bfb 7044 /* GD -> LE */
951fd09b 7045 tls_set = TLS_EXPLICIT | TLS_GD;
411e1bfb
AM
7046 else
7047 /* GD -> IE */
951fd09b
AM
7048 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7049 tls_clear = TLS_GD;
411e1bfb
AM
7050 }
7051 else
7052 {
951fd09b
AM
7053 if (!is_local)
7054 continue;
7055
7056 /* LD -> LE */
7057 tls_set = TLS_EXPLICIT;
7058 tls_clear = TLS_LD;
411e1bfb
AM
7059 }
7060 break;
7061
7062 default:
7063 expecting_tls_get_addr = 0;
7064 continue;
7065 }
7066
7067 if ((tls_set & TLS_EXPLICIT) == 0)
7068 {
7069 struct got_entry *ent;
7070
7071 /* Adjust got entry for this reloc. */
7072 if (h != NULL)
7073 ent = h->got.glist;
7074 else
7075 ent = elf_local_got_ents (ibfd)[r_symndx];
7076
7077 for (; ent != NULL; ent = ent->next)
7078 if (ent->addend == rel->r_addend
e717da7e 7079 && ent->owner == ibfd
e7b938ca 7080 && ent->tls_type == tls_type)
411e1bfb
AM
7081 break;
7082 if (ent == NULL)
7083 abort ();
7084
7085 if (tls_set == 0)
7086 {
7087 /* We managed to get rid of a got entry. */
7088 if (ent->got.refcount > 0)
7089 ent->got.refcount -= 1;
7090 }
411e1bfb 7091 }
8c1d1bb8 7092 else
411e1bfb 7093 {
8c1d1bb8
AM
7094 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7095 we'll lose one or two dyn relocs. */
7096 if (!dec_dynrel_count (rel->r_info, sec, info,
7097 NULL, h, sym_sec))
7098 return FALSE;
7099
7100 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7101 {
7102 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7103 NULL, h, sym_sec))
7104 return FALSE;
7105 }
411e1bfb
AM
7106 }
7107
e7b938ca
AM
7108 *tls_mask |= tls_set;
7109 *tls_mask &= ~tls_clear;
411e1bfb
AM
7110 }
7111
7112 if (elf_section_data (sec)->relocs != relstart)
7113 free (relstart);
7114 }
7115
30038c59
AM
7116 if (toc_ref != NULL)
7117 free (toc_ref);
7118
411e1bfb
AM
7119 if (locsyms != NULL
7120 && (elf_tdata (ibfd)->symtab_hdr.contents
7121 != (unsigned char *) locsyms))
6cdc0ccc
AM
7122 {
7123 if (!info->keep_memory)
411e1bfb 7124 free (locsyms);
6cdc0ccc 7125 else
411e1bfb 7126 elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms;
6cdc0ccc 7127 }
1e2f5b6e 7128 }
b34976b6 7129 return TRUE;
1e2f5b6e 7130}
b34976b6 7131
c5614fa4
AM
7132/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7133 the values of any global symbols in a toc section that has been
7134 edited. Globals in toc sections should be a rarity, so this function
7135 sets a flag if any are found in toc sections other than the one just
7136 edited, so that futher hash table traversals can be avoided. */
7137
7138struct adjust_toc_info
7139{
7140 asection *toc;
7141 unsigned long *skip;
7142 bfd_boolean global_toc_syms;
7143};
7144
7145static bfd_boolean
7146adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7147{
7148 struct ppc_link_hash_entry *eh;
7149 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7150
7151 if (h->root.type == bfd_link_hash_indirect)
7152 return TRUE;
7153
7154 if (h->root.type == bfd_link_hash_warning)
7155 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7156
7157 if (h->root.type != bfd_link_hash_defined
7158 && h->root.type != bfd_link_hash_defweak)
7159 return TRUE;
7160
7161 eh = (struct ppc_link_hash_entry *) h;
7162 if (eh->adjust_done)
7163 return TRUE;
7164
7165 if (eh->elf.root.u.def.section == toc_inf->toc)
7166 {
7167 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7168 if (skip != (unsigned long) -1)
7169 eh->elf.root.u.def.value -= skip;
7170 else
7171 {
7172 (*_bfd_error_handler)
7173 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7174 eh->elf.root.u.def.section = &bfd_abs_section;
7175 eh->elf.root.u.def.value = 0;
7176 }
7177 eh->adjust_done = 1;
7178 }
7179 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7180 toc_inf->global_toc_syms = TRUE;
7181
7182 return TRUE;
7183}
7184
7185/* Examine all relocs referencing .toc sections in order to remove
7186 unused .toc entries. */
7187
7188bfd_boolean
7189ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7190{
7191 bfd *ibfd;
7192 struct adjust_toc_info toc_inf;
7193
7194 toc_inf.global_toc_syms = TRUE;
7195 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7196 {
7197 asection *toc, *sec;
7198 Elf_Internal_Shdr *symtab_hdr;
7199 Elf_Internal_Sym *local_syms;
7200 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7201 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM
7202 unsigned long *skip, *drop;
7203 unsigned char *used;
7204 unsigned char *keep, last, some_unused;
7205
7206 toc = bfd_get_section_by_name (ibfd, ".toc");
7207 if (toc == NULL
92b7a70f 7208 || toc->size == 0
c5614fa4
AM
7209 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7210 || elf_discarded_section (toc))
7211 continue;
7212
7213 local_syms = NULL;
7214 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7215 sym_hashes = elf_sym_hashes (ibfd);
7216
7217 /* Look at sections dropped from the final link. */
7218 skip = NULL;
7219 relstart = NULL;
7220 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7221 {
7222 if (sec->reloc_count == 0
7223 || !elf_discarded_section (sec)
7224 || get_opd_info (sec)
7225 || (sec->flags & SEC_ALLOC) == 0
7226 || (sec->flags & SEC_DEBUGGING) != 0)
7227 continue;
7228
7229 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7230 if (relstart == NULL)
7231 goto error_ret;
7232
7233 /* Run through the relocs to see which toc entries might be
7234 unused. */
7235 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7236 {
7237 enum elf_ppc64_reloc_type r_type;
7238 unsigned long r_symndx;
7239 asection *sym_sec;
7240 struct elf_link_hash_entry *h;
7241 Elf_Internal_Sym *sym;
7242 bfd_vma val;
7243
7244 r_type = ELF64_R_TYPE (rel->r_info);
7245 switch (r_type)
7246 {
7247 default:
7248 continue;
7249
7250 case R_PPC64_TOC16:
7251 case R_PPC64_TOC16_LO:
7252 case R_PPC64_TOC16_HI:
7253 case R_PPC64_TOC16_HA:
7254 case R_PPC64_TOC16_DS:
7255 case R_PPC64_TOC16_LO_DS:
7256 break;
7257 }
7258
7259 r_symndx = ELF64_R_SYM (rel->r_info);
7260 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7261 r_symndx, ibfd))
7262 goto error_ret;
7263
7264 if (sym_sec != toc)
7265 continue;
7266
7267 if (h != NULL)
7268 val = h->root.u.def.value;
7269 else
7270 val = sym->st_value;
7271 val += rel->r_addend;
7272
7273 if (val >= toc->size)
7274 continue;
7275
7276 /* Anything in the toc ought to be aligned to 8 bytes.
7277 If not, don't mark as unused. */
7278 if (val & 7)
7279 continue;
7280
7281 if (skip == NULL)
7282 {
7283 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7284 if (skip == NULL)
7285 goto error_ret;
7286 }
7287
7288 skip[val >> 3] = 1;
7289 }
7290
7291 if (elf_section_data (sec)->relocs != relstart)
7292 free (relstart);
7293 }
7294
7295 if (skip == NULL)
7296 continue;
7297
7298 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7299 if (used == NULL)
7300 {
7301 error_ret:
7302 if (local_syms != NULL
7303 && symtab_hdr->contents != (unsigned char *) local_syms)
7304 free (local_syms);
7305 if (sec != NULL
7306 && relstart != NULL
7307 && elf_section_data (sec)->relocs != relstart)
7308 free (relstart);
7309 if (skip != NULL)
7310 free (skip);
7311 return FALSE;
7312 }
7313
30038c59
AM
7314 /* Now check all kept sections that might reference the toc.
7315 Check the toc itself last. */
7316 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7317 : ibfd->sections);
c5614fa4 7318 sec != NULL;
c5614fa4 7319 sec = (sec == toc ? NULL
c5614fa4 7320 : sec->next == NULL ? toc
30038c59 7321 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM
7322 : sec->next))
7323 {
7324 int repeat;
7325
7326 if (sec->reloc_count == 0
7327 || elf_discarded_section (sec)
7328 || get_opd_info (sec)
7329 || (sec->flags & SEC_ALLOC) == 0
7330 || (sec->flags & SEC_DEBUGGING) != 0)
7331 continue;
7332
7333 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7334 if (relstart == NULL)
7335 goto error_ret;
7336
7337 /* Mark toc entries referenced as used. */
7338 repeat = 0;
7339 do
7340 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7341 {
7342 enum elf_ppc64_reloc_type r_type;
7343 unsigned long r_symndx;
7344 asection *sym_sec;
7345 struct elf_link_hash_entry *h;
7346 Elf_Internal_Sym *sym;
7347 bfd_vma val;
7348
7349 r_type = ELF64_R_TYPE (rel->r_info);
7350 switch (r_type)
7351 {
7352 case R_PPC64_TOC16:
7353 case R_PPC64_TOC16_LO:
7354 case R_PPC64_TOC16_HI:
7355 case R_PPC64_TOC16_HA:
7356 case R_PPC64_TOC16_DS:
7357 case R_PPC64_TOC16_LO_DS:
7358 /* In case we're taking addresses of toc entries. */
7359 case R_PPC64_ADDR64:
7360 break;
7361
7362 default:
7363 continue;
7364 }
7365
7366 r_symndx = ELF64_R_SYM (rel->r_info);
7367 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7368 r_symndx, ibfd))
7369 {
7370 free (used);
7371 goto error_ret;
7372 }
7373
7374 if (sym_sec != toc)
7375 continue;
7376
7377 if (h != NULL)
7378 val = h->root.u.def.value;
7379 else
7380 val = sym->st_value;
7381 val += rel->r_addend;
7382
7383 if (val >= toc->size)
7384 continue;
7385
7386 /* For the toc section, we only mark as used if
7387 this entry itself isn't unused. */
7388 if (sec == toc
7389 && !used[val >> 3]
7390 && (used[rel->r_offset >> 3]
7391 || !skip[rel->r_offset >> 3]))
7392 /* Do all the relocs again, to catch reference
7393 chains. */
7394 repeat = 1;
7395
7396 used[val >> 3] = 1;
7397 }
7398 while (repeat);
7399 }
7400
7401 /* Merge the used and skip arrays. Assume that TOC
7402 doublewords not appearing as either used or unused belong
7403 to to an entry more than one doubleword in size. */
7404 for (drop = skip, keep = used, last = 0, some_unused = 0;
7405 drop < skip + (toc->size + 7) / 8;
7406 ++drop, ++keep)
7407 {
7408 if (*keep)
7409 {
7410 *drop = 0;
7411 last = 0;
7412 }
7413 else if (*drop)
7414 {
7415 some_unused = 1;
7416 last = 1;
7417 }
7418 else
7419 *drop = last;
7420 }
7421
7422 free (used);
7423
7424 if (some_unused)
7425 {
7426 bfd_byte *contents, *src;
7427 unsigned long off;
7428
7429 /* Shuffle the toc contents, and at the same time convert the
7430 skip array from booleans into offsets. */
7431 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7432 goto error_ret;
7433
7434 elf_section_data (toc)->this_hdr.contents = contents;
7435
7436 for (src = contents, off = 0, drop = skip;
7437 src < contents + toc->size;
7438 src += 8, ++drop)
7439 {
7440 if (*drop)
7441 {
7442 *drop = (unsigned long) -1;
7443 off += 8;
7444 }
7445 else if (off != 0)
7446 {
7447 *drop = off;
7448 memcpy (src - off, src, 8);
7449 }
7450 }
7451 toc->rawsize = toc->size;
7452 toc->size = src - contents - off;
7453
92b7a70f
AM
7454 if (toc->reloc_count != 0)
7455 {
7456 Elf_Internal_Rela *wrel;
7457 bfd_size_type sz;
c5614fa4 7458
92b7a70f
AM
7459 /* Read toc relocs. */
7460 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7461 TRUE);
7462 if (relstart == NULL)
7463 goto error_ret;
7464
7465 /* Remove unused toc relocs, and adjust those we keep. */
7466 wrel = relstart;
7467 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7468 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7469 {
7470 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7471 wrel->r_info = rel->r_info;
7472 wrel->r_addend = rel->r_addend;
7473 ++wrel;
7474 }
8c1d1bb8
AM
7475 else if (!dec_dynrel_count (rel->r_info, toc, info,
7476 &local_syms, NULL, NULL))
7477 goto error_ret;
35090471 7478
92b7a70f
AM
7479 toc->reloc_count = wrel - relstart;
7480 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7481 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7482 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7483 }
c5614fa4
AM
7484
7485 /* Adjust addends for relocs against the toc section sym. */
7486 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7487 {
7488 if (sec->reloc_count == 0
7489 || elf_discarded_section (sec))
7490 continue;
7491
7492 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7493 TRUE);
7494 if (relstart == NULL)
7495 goto error_ret;
7496
7497 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7498 {
7499 enum elf_ppc64_reloc_type r_type;
7500 unsigned long r_symndx;
7501 asection *sym_sec;
7502 struct elf_link_hash_entry *h;
7503 Elf_Internal_Sym *sym;
7504
7505 r_type = ELF64_R_TYPE (rel->r_info);
7506 switch (r_type)
7507 {
7508 default:
7509 continue;
7510
7511 case R_PPC64_TOC16:
7512 case R_PPC64_TOC16_LO:
7513 case R_PPC64_TOC16_HI:
7514 case R_PPC64_TOC16_HA:
7515 case R_PPC64_TOC16_DS:
7516 case R_PPC64_TOC16_LO_DS:
7517 case R_PPC64_ADDR64:
7518 break;
7519 }
7520
7521 r_symndx = ELF64_R_SYM (rel->r_info);
7522 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7523 r_symndx, ibfd))
7524 goto error_ret;
7525
7526 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7527 continue;
7528
7529 rel->r_addend -= skip[rel->r_addend >> 3];
7530 }
7531 }
7532
7533 /* We shouldn't have local or global symbols defined in the TOC,
7534 but handle them anyway. */
7535 if (local_syms != NULL)
7536 {
7537 Elf_Internal_Sym *sym;
7538
7539 for (sym = local_syms;
7540 sym < local_syms + symtab_hdr->sh_info;
7541 ++sym)
7542 if (sym->st_shndx != SHN_UNDEF
7543 && (sym->st_shndx < SHN_LORESERVE
7544 || sym->st_shndx > SHN_HIRESERVE)
7545 && sym->st_value != 0
7546 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7547 {
7548 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7549 sym->st_value -= skip[sym->st_value >> 3];
7550 else
7551 {
7552 (*_bfd_error_handler)
7553 (_("%s defined in removed toc entry"),
26c61ae5
L
7554 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7555 NULL));
c5614fa4
AM
7556 sym->st_value = 0;
7557 sym->st_shndx = SHN_ABS;
7558 }
7559 symtab_hdr->contents = (unsigned char *) local_syms;
7560 }
7561 }
7562
7563 /* Finally, adjust any global syms defined in the toc. */
7564 if (toc_inf.global_toc_syms)
7565 {
7566 toc_inf.toc = toc;
7567 toc_inf.skip = skip;
7568 toc_inf.global_toc_syms = FALSE;
7569 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7570 &toc_inf);
7571 }
7572 }
7573
7574 if (local_syms != NULL
7575 && symtab_hdr->contents != (unsigned char *) local_syms)
7576 {
7577 if (!info->keep_memory)
7578 free (local_syms);
7579 else
7580 symtab_hdr->contents = (unsigned char *) local_syms;
7581 }
7582 free (skip);
7583 }
7584
7585 return TRUE;
7586}
7587
65f38f15
AM
7588/* Allocate space in .plt, .got and associated reloc sections for
7589 dynamic relocs. */
5bd4f169 7590
b34976b6 7591static bfd_boolean
4ce794b7 7592allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7593{
65f38f15
AM
7594 struct bfd_link_info *info;
7595 struct ppc_link_hash_table *htab;
5bd4f169 7596 asection *s;
65f38f15
AM
7597 struct ppc_link_hash_entry *eh;
7598 struct ppc_dyn_relocs *p;
411e1bfb 7599 struct got_entry *gent;
5bd4f169 7600
e92d460e 7601 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7602 return TRUE;
5bd4f169 7603
e92d460e
AM
7604 if (h->root.type == bfd_link_hash_warning)
7605 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7606
65f38f15
AM
7607 info = (struct bfd_link_info *) inf;
7608 htab = ppc_hash_table (info);
5bd4f169 7609
65f38f15 7610 if (htab->elf.dynamic_sections_created
411e1bfb 7611 && h->dynindx != -1
9c7a29a3 7612 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7613 {
411e1bfb
AM
7614 struct plt_entry *pent;
7615 bfd_boolean doneone = FALSE;
7616 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7617 if (pent->plt.refcount > 0)
7618 {
411e1bfb
AM
7619 /* If this is the first .plt entry, make room for the special
7620 first entry. */
4ce794b7 7621 s = htab->plt;
eea6121a
AM
7622 if (s->size == 0)
7623 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7624
eea6121a 7625 pent->plt.offset = s->size;
411e1bfb
AM
7626
7627 /* Make room for this entry. */
eea6121a 7628 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM
7629
7630 /* Make room for the .glink code. */
4ce794b7 7631 s = htab->glink;
eea6121a
AM
7632 if (s->size == 0)
7633 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7634 /* We need bigger stubs past index 32767. */
eea6121a
AM
7635 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7636 s->size += 4;
7637 s->size += 2*4;
411e1bfb
AM
7638
7639 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7640 s = htab->relplt;
eea6121a 7641 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
7642 doneone = TRUE;
7643 }
7644 else
7645 pent->plt.offset = (bfd_vma) -1;
7646 if (!doneone)
65f38f15 7647 {
411e1bfb 7648 h->plt.plist = NULL;
f5385ebf 7649 h->needs_plt = 0;
65f38f15
AM
7650 }
7651 }
7652 else
7653 {
411e1bfb 7654 h->plt.plist = NULL;
f5385ebf 7655 h->needs_plt = 0;
65f38f15
AM
7656 }
7657
951fd09b
AM
7658 eh = (struct ppc_link_hash_entry *) h;
7659 /* Run through the TLS GD got entries first if we're changing them
7660 to TPREL. */
e7b938ca 7661 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM
7662 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7663 if (gent->got.refcount > 0
7664 && (gent->tls_type & TLS_GD) != 0)
7665 {
7666 /* This was a GD entry that has been converted to TPREL. If
7667 there happens to be a TPREL entry we can use that one. */
7668 struct got_entry *ent;
7669 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7670 if (ent->got.refcount > 0
7671 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM
7672 && ent->addend == gent->addend
7673 && ent->owner == gent->owner)
951fd09b
AM
7674 {
7675 gent->got.refcount = 0;
7676 break;
7677 }
7678
7679 /* If not, then we'll be using our own TPREL entry. */
7680 if (gent->got.refcount != 0)
7681 gent->tls_type = TLS_TLS | TLS_TPREL;
7682 }
7683
411e1bfb
AM
7684 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7685 if (gent->got.refcount > 0)
7686 {
951fd09b
AM
7687 bfd_boolean dyn;
7688
411e1bfb 7689 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM
7690 Undefined weak syms won't yet be marked as dynamic,
7691 nor will all TLS symbols. */
411e1bfb 7692 if (h->dynindx == -1
f5385ebf 7693 && !h->forced_local)
411e1bfb 7694 {
c152c796 7695 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM
7696 return FALSE;
7697 }
65f38f15 7698
d881513a 7699 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7700 && !h->def_dynamic)
411e1bfb 7701 {
e717da7e 7702 gent->got.offset = ppc64_tlsld_got (gent->owner)->offset;
951fd09b 7703 continue;
411e1bfb 7704 }
951fd09b 7705
e717da7e 7706 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM
7707 gent->got.offset = s->size;
7708 s->size
d881513a 7709 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7710 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM
7711 if ((info->shared
7712 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7713 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7714 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7715 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7716 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM
7717 ? 2 * sizeof (Elf64_External_Rela)
7718 : sizeof (Elf64_External_Rela));
411e1bfb
AM
7719 }
7720 else
7721 gent->got.offset = (bfd_vma) -1;
65f38f15 7722
65f38f15 7723 if (eh->dyn_relocs == NULL)
b34976b6 7724 return TRUE;
65f38f15
AM
7725
7726 /* In the shared -Bsymbolic case, discard space allocated for
7727 dynamic pc-relative relocs against symbols which turn out to be
7728 defined in regular objects. For the normal shared case, discard
7729 space for relocs that have become local due to symbol visibility
7730 changes. */
7731
7732 if (info->shared)
7733 {
9c7a29a3
AM
7734 /* Relocs that use pc_count are those that appear on a call insn,
7735 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7736 generated via assembly. We want calls to protected symbols to
7737 resolve directly to the function rather than going via the plt.
7738 If people want function pointer comparisons to work as expected
7739 then they should avoid writing weird assembly. */
09695f56 7740 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM
7741 {
7742 struct ppc_dyn_relocs **pp;
7743
7744 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7745 {
65f38f15
AM
7746 p->count -= p->pc_count;
7747 p->pc_count = 0;
7748 if (p->count == 0)
7749 *pp = p->next;
7750 else
7751 pp = &p->next;
5bd4f169 7752 }
65f38f15 7753 }
4e795f50
AM
7754
7755 /* Also discard relocs on undefined weak syms with non-default
7756 visibility. */
cab87ef9
AM
7757 if (eh->dyn_relocs != NULL
7758 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM
7759 {
7760 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7761 eh->dyn_relocs = NULL;
7762
7763 /* Make sure this symbol is output as a dynamic symbol.
7764 Undefined weak syms won't yet be marked as dynamic. */
7765 else if (h->dynindx == -1
7766 && !h->forced_local)
7767 {
7768 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7769 return FALSE;
7770 }
7771 }
65f38f15 7772 }
f4656909 7773 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM
7774 {
7775 /* For the non-shared case, discard space for relocs against
7776 symbols which turn out to need copy relocs or are not
7777 dynamic. */
7778
f5385ebf
AM
7779 if (!h->non_got_ref
7780 && h->def_dynamic
7781 && !h->def_regular)
65f38f15
AM
7782 {
7783 /* Make sure this symbol is output as a dynamic symbol.
7784 Undefined weak syms won't yet be marked as dynamic. */
7785 if (h->dynindx == -1
f5385ebf 7786 && !h->forced_local)
65f38f15 7787 {
c152c796 7788 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7789 return FALSE;
65f38f15
AM
7790 }
7791
7792 /* If that succeeded, we know we'll be keeping all the
7793 relocs. */
7794 if (h->dynindx != -1)
7795 goto keep;
7796 }
7797
7798 eh->dyn_relocs = NULL;
7799
ec338859 7800 keep: ;
65f38f15
AM
7801 }
7802
7803 /* Finally, allocate space. */
7804 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7805 {
7806 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7807 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM
7808 }
7809
b34976b6 7810 return TRUE;
65f38f15
AM
7811}
7812
7813/* Find any dynamic relocs that apply to read-only sections. */
7814
b34976b6 7815static bfd_boolean
4ce794b7 7816readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM
7817{
7818 struct ppc_link_hash_entry *eh;
7819 struct ppc_dyn_relocs *p;
7820
e92d460e
AM
7821 if (h->root.type == bfd_link_hash_warning)
7822 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7823
65f38f15
AM
7824 eh = (struct ppc_link_hash_entry *) h;
7825 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7826 {
7827 asection *s = p->sec->output_section;
7828
7829 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7830 {
4ce794b7 7831 struct bfd_link_info *info = inf;
65f38f15
AM
7832
7833 info->flags |= DF_TEXTREL;
7834
7835 /* Not an error, just cut short the traversal. */
b34976b6 7836 return FALSE;
65f38f15
AM
7837 }
7838 }
b34976b6 7839 return TRUE;
65f38f15
AM
7840}
7841
7842/* Set the sizes of the dynamic sections. */
7843
b34976b6 7844static bfd_boolean
4ce794b7
AM
7845ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7846 struct bfd_link_info *info)
65f38f15
AM
7847{
7848 struct ppc_link_hash_table *htab;
7849 bfd *dynobj;
7850 asection *s;
b34976b6 7851 bfd_boolean relocs;
65f38f15
AM
7852 bfd *ibfd;
7853
7854 htab = ppc_hash_table (info);
7855 dynobj = htab->elf.dynobj;
7856 if (dynobj == NULL)
7857 abort ();
7858
7859 if (htab->elf.dynamic_sections_created)
7860 {
7861 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7862 if (info->executable)
65f38f15
AM
7863 {
7864 s = bfd_get_section_by_name (dynobj, ".interp");
7865 if (s == NULL)
7866 abort ();
eea6121a 7867 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM
7868 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7869 }
7870 }
7871
7872 /* Set up .got offsets for local syms, and space for local dynamic
7873 relocs. */
7874 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7875 {
411e1bfb
AM
7876 struct got_entry **lgot_ents;
7877 struct got_entry **end_lgot_ents;
e7b938ca 7878 char *lgot_masks;
65f38f15
AM
7879 bfd_size_type locsymcount;
7880 Elf_Internal_Shdr *symtab_hdr;
7881 asection *srel;
7882
ee75fd95 7883 if (!is_ppc64_elf_target (ibfd->xvec))
65f38f15
AM
7884 continue;
7885
e717da7e
AM
7886 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7887 {
7888 s = ppc64_elf_tdata (ibfd)->got;
eea6121a
AM
7889 ppc64_tlsld_got (ibfd)->offset = s->size;
7890 s->size += 16;
e717da7e
AM
7891 if (info->shared)
7892 {
7893 srel = ppc64_elf_tdata (ibfd)->relgot;
eea6121a 7894 srel->size += sizeof (Elf64_External_Rela);
e717da7e
AM
7895 }
7896 }
7897 else
7898 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
7899
65f38f15
AM
7900 for (s = ibfd->sections; s != NULL; s = s->next)
7901 {
ec338859 7902 struct ppc_dyn_relocs *p;
65f38f15 7903
6edfbbad 7904 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 7905 {
ec338859
AM
7906 if (!bfd_is_abs_section (p->sec)
7907 && bfd_is_abs_section (p->sec->output_section))
7908 {
7909 /* Input section has been discarded, either because
7910 it is a copy of a linkonce section or due to
7911 linker script /DISCARD/, so we'll be discarding
7912 the relocs too. */
7913 }
248866a8 7914 else if (p->count != 0)
ec338859
AM
7915 {
7916 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7917 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
7918 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7919 info->flags |= DF_TEXTREL;
ec338859 7920 }
65f38f15
AM
7921 }
7922 }
7923
411e1bfb
AM
7924 lgot_ents = elf_local_got_ents (ibfd);
7925 if (!lgot_ents)
65f38f15
AM
7926 continue;
7927
7928 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7929 locsymcount = symtab_hdr->sh_info;
411e1bfb 7930 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7931 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM
7932 s = ppc64_elf_tdata (ibfd)->got;
7933 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7934 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7935 {
411e1bfb
AM
7936 struct got_entry *ent;
7937
7938 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7939 if (ent->got.refcount > 0)
7940 {
e7b938ca 7941 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7942 {
e717da7e 7943 if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1)
411e1bfb 7944 {
eea6121a
AM
7945 ppc64_tlsld_got (ibfd)->offset = s->size;
7946 s->size += 16;
411e1bfb 7947 if (info->shared)
eea6121a 7948 srel->size += sizeof (Elf64_External_Rela);
411e1bfb 7949 }
e717da7e 7950 ent->got.offset = ppc64_tlsld_got (ibfd)->offset;
411e1bfb
AM
7951 }
7952 else
7953 {
eea6121a 7954 ent->got.offset = s->size;
e7b938ca 7955 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7956 {
eea6121a 7957 s->size += 16;
411e1bfb 7958 if (info->shared)
eea6121a 7959 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM
7960 }
7961 else
7962 {
eea6121a 7963 s->size += 8;
411e1bfb 7964 if (info->shared)
eea6121a 7965 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
7966 }
7967 }
7968 }
7969 else
7970 ent->got.offset = (bfd_vma) -1;
65f38f15
AM
7971 }
7972 }
7973
7974 /* Allocate global sym .plt and .got entries, and space for global
7975 sym dynamic relocs. */
4ce794b7 7976 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15
AM
7977
7978 /* We now have determined the sizes of the various dynamic sections.
7979 Allocate memory for them. */
b34976b6 7980 relocs = FALSE;
65f38f15
AM
7981 for (s = dynobj->sections; s != NULL; s = s->next)
7982 {
7983 if ((s->flags & SEC_LINKER_CREATED) == 0)
7984 continue;
7985
4ce794b7 7986 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM
7987 /* These haven't been allocated yet; don't strip. */
7988 continue;
e717da7e
AM
7989 else if (s == htab->got
7990 || s == htab->plt
c456f082
AM
7991 || s == htab->glink
7992 || s == htab->dynbss)
65f38f15
AM
7993 {
7994 /* Strip this section if we don't need it; see the
7995 comment below. */
5bd4f169 7996 }
0112cd26 7997 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 7998 {
c456f082 7999 if (s->size != 0)
5bd4f169 8000 {
4ce794b7 8001 if (s != htab->relplt)
b34976b6 8002 relocs = TRUE;
5bd4f169
AM
8003
8004 /* We use the reloc_count field as a counter if we need
8005 to copy relocs into the output file. */
8006 s->reloc_count = 0;
8007 }
8008 }
65f38f15 8009 else
5bd4f169
AM
8010 {
8011 /* It's not one of our sections, so don't allocate space. */
8012 continue;
8013 }
8014
eea6121a 8015 if (s->size == 0)
5bd4f169 8016 {
c456f082
AM
8017 /* If we don't need this section, strip it from the
8018 output file. This is mostly to handle .rela.bss and
8019 .rela.plt. We must create both sections in
8020 create_dynamic_sections, because they must be created
8021 before the linker maps input sections to output
8022 sections. The linker does that before
8023 adjust_dynamic_symbol is called, and it is that
8024 function which decides whether anything needs to go
8025 into these sections. */
8423293d 8026 s->flags |= SEC_EXCLUDE;
5bd4f169
AM
8027 continue;
8028 }
8029
c456f082 8030 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM
8031 continue;
8032
65f38f15
AM
8033 /* Allocate memory for the section contents. We use bfd_zalloc
8034 here in case unused entries are not reclaimed before the
8035 section's contents are written out. This should not happen,
411e1bfb
AM
8036 but this way if it does we get a R_PPC64_NONE reloc in .rela
8037 sections instead of garbage.
8038 We also rely on the section contents being zero when writing
8039 the GOT. */
eea6121a 8040 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8041 if (s->contents == NULL)
b34976b6 8042 return FALSE;
5bd4f169
AM
8043 }
8044
e717da7e
AM
8045 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8046 {
ee75fd95 8047 if (!is_ppc64_elf_target (ibfd->xvec))
7b53ace3
AM
8048 continue;
8049
e717da7e
AM
8050 s = ppc64_elf_tdata (ibfd)->got;
8051 if (s != NULL && s != htab->got)
8052 {
eea6121a 8053 if (s->size == 0)
8423293d 8054 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8055 else
8056 {
eea6121a 8057 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8058 if (s->contents == NULL)
8059 return FALSE;
8060 }
8061 }
8062 s = ppc64_elf_tdata (ibfd)->relgot;
8063 if (s != NULL)
8064 {
eea6121a 8065 if (s->size == 0)
8423293d 8066 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8067 else
8068 {
eea6121a 8069 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8070 if (s->contents == NULL)
8071 return FALSE;
8072 relocs = TRUE;
8073 s->reloc_count = 0;
8074 }
8075 }
8076 }
8077
e86ce104 8078 if (htab->elf.dynamic_sections_created)
5bd4f169
AM
8079 {
8080 /* Add some entries to the .dynamic section. We fill in the
8081 values later, in ppc64_elf_finish_dynamic_sections, but we
8082 must add the entries now so that we get the correct size for
8083 the .dynamic section. The DT_DEBUG entry is filled in by the
8084 dynamic linker and used by the debugger. */
dc810e39 8085#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8086 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8087
36af4a4e 8088 if (info->executable)
5bd4f169 8089 {
dc810e39 8090 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8091 return FALSE;
5bd4f169
AM
8092 }
8093
eea6121a 8094 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8095 {
dc810e39
AM
8096 if (!add_dynamic_entry (DT_PLTGOT, 0)
8097 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8098 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM
8099 || !add_dynamic_entry (DT_JMPREL, 0)
8100 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8101 return FALSE;
5bd4f169
AM
8102 }
8103
19397422
AM
8104 if (NO_OPD_RELOCS)
8105 {
8106 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8107 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8108 return FALSE;
19397422
AM
8109 }
8110
5bd4f169
AM
8111 if (relocs)
8112 {
dc810e39
AM
8113 if (!add_dynamic_entry (DT_RELA, 0)
8114 || !add_dynamic_entry (DT_RELASZ, 0)
8115 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8116 return FALSE;
5bd4f169 8117
65f38f15
AM
8118 /* If any dynamic relocs apply to a read-only section,
8119 then we need a DT_TEXTREL entry. */
248866a8 8120 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8121 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8122
65f38f15 8123 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8124 {
65f38f15 8125 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8126 return FALSE;
5bd4f169 8127 }
5bd4f169 8128 }
5bd4f169 8129 }
65f38f15 8130#undef add_dynamic_entry
5bd4f169 8131
b34976b6 8132 return TRUE;
5bd4f169
AM
8133}
8134
721956f4 8135/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8136
4ce794b7
AM
8137static inline enum ppc_stub_type
8138ppc_type_of_stub (asection *input_sec,
8139 const Elf_Internal_Rela *rel,
8140 struct ppc_link_hash_entry **hash,
8141 bfd_vma destination)
5bd4f169 8142{
721956f4
AM
8143 struct ppc_link_hash_entry *h = *hash;
8144 bfd_vma location;
8145 bfd_vma branch_offset;
8146 bfd_vma max_branch_offset;
4ce794b7 8147 enum elf_ppc64_reloc_type r_type;
5bd4f169 8148
721956f4
AM
8149 if (h != NULL)
8150 {
7fe2b9a6
AM
8151 struct ppc_link_hash_entry *fdh = h;
8152 if (fdh->oh != NULL
8153 && fdh->oh->is_func_descriptor)
8154 fdh = fdh->oh;
8387904d 8155
7fe2b9a6 8156 if (fdh->elf.dynindx != -1)
5bd4f169 8157 {
411e1bfb 8158 struct plt_entry *ent;
8387904d 8159
7fe2b9a6 8160 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
8161 if (ent->addend == rel->r_addend
8162 && ent->plt.offset != (bfd_vma) -1)
8163 {
7fe2b9a6 8164 *hash = fdh;
411e1bfb
AM
8165 return ppc_stub_plt_call;
8166 }
5bd4f169
AM
8167 }
8168
7fe2b9a6
AM
8169 /* Here, we know we don't have a plt entry. If we don't have a
8170 either a defined function descriptor or a defined entry symbol
8171 in a regular object file, then it is pointless trying to make
8172 any other type of stub. */
8173 if (!((fdh->elf.root.type == bfd_link_hash_defined
8174 || fdh->elf.root.type == bfd_link_hash_defweak)
8175 && fdh->elf.root.u.def.section->output_section != NULL)
8176 && !((h->elf.root.type == bfd_link_hash_defined
8177 || h->elf.root.type == bfd_link_hash_defweak)
8178 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8179 return ppc_stub_none;
5d1634d7 8180 }
5d1634d7 8181
721956f4
AM
8182 /* Determine where the call point is. */
8183 location = (input_sec->output_offset
8184 + input_sec->output_section->vma
8185 + rel->r_offset);
5d1634d7 8186
721956f4
AM
8187 branch_offset = destination - location;
8188 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8189
721956f4
AM
8190 /* Determine if a long branch stub is needed. */
8191 max_branch_offset = 1 << 25;
4ce794b7 8192 if (r_type != R_PPC64_REL24)
721956f4 8193 max_branch_offset = 1 << 15;
5d1634d7 8194
721956f4
AM
8195 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8196 /* We need a stub. Figure out whether a long_branch or plt_branch
8197 is needed later. */
8198 return ppc_stub_long_branch;
5d1634d7 8199
721956f4 8200 return ppc_stub_none;
5d1634d7
AM
8201}
8202
8203/* Build a .plt call stub. */
8204
4ce794b7
AM
8205static inline bfd_byte *
8206build_plt_stub (bfd *obfd, bfd_byte *p, int offset)
5d1634d7
AM
8207{
8208#define PPC_LO(v) ((v) & 0xffff)
8209#define PPC_HI(v) (((v) >> 16) & 0xffff)
8210#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8211
5d1634d7 8212 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ad8e1ba5 8213 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
5d1634d7
AM
8214 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8215 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 8216 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM
8217 offset += 8;
8218 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
8219 if (PPC_HA (offset + 8) != PPC_HA (offset))
ad8e1ba5 8220 bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4;
5d1634d7
AM
8221 offset += 8;
8222 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8223 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8224 bfd_put_32 (obfd, BCTR, p), p += 4;
8225 return p;
8226}
8227
b34976b6 8228static bfd_boolean
4ce794b7 8229ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8230{
721956f4
AM
8231 struct ppc_stub_hash_entry *stub_entry;
8232 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM
8233 struct bfd_link_info *info;
8234 struct ppc_link_hash_table *htab;
721956f4
AM
8235 bfd_byte *loc;
8236 bfd_byte *p;
8237 unsigned int indx;
411e1bfb 8238 struct plt_entry *ent;
ee75fd95 8239 bfd_vma dest, off;
721956f4 8240 int size;
5d1634d7 8241
721956f4
AM
8242 /* Massage our args to the form they really have. */
8243 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8244 info = in_arg;
5d1634d7 8245
5d1634d7
AM
8246 htab = ppc_hash_table (info);
8247
721956f4 8248 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8249 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8250 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8251
4ce794b7 8252 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8253 switch (stub_entry->stub_type)
5d1634d7 8254 {
721956f4 8255 case ppc_stub_long_branch:
ad8e1ba5 8256 case ppc_stub_long_branch_r2off:
721956f4 8257 /* Branches are relative. This is where we are going to. */
ee75fd95
AM
8258 off = dest = (stub_entry->target_value
8259 + stub_entry->target_section->output_offset
8260 + stub_entry->target_section->output_section->vma);
5d1634d7 8261
721956f4
AM
8262 /* And this is where we are coming from. */
8263 off -= (stub_entry->stub_offset
97b639ba
AM
8264 + stub_entry->stub_sec->output_offset
8265 + stub_entry->stub_sec->output_section->vma);
e86ce104 8266
ad8e1ba5
AM
8267 if (stub_entry->stub_type != ppc_stub_long_branch_r2off)
8268 size = 4;
8269 else
8270 {
8271 bfd_vma r2off;
8272
8273 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8274 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8275 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8276 loc += 4;
97b639ba 8277 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8278 loc += 4;
97b639ba 8279 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
8280 loc += 4;
8281 off -= 12;
8282 size = 16;
8283 }
97b639ba 8284 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8285
5c3dead3
AM
8286 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8287 {
8288 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8289 stub_entry->root.string);
8290 htab->stub_error = TRUE;
8291 return FALSE;
8292 }
ee75fd95
AM
8293
8294 if (info->emitrelocations)
8295 {
8296 Elf_Internal_Rela *relocs, *r;
8297 struct bfd_elf_section_data *elfsec_data;
8298
8299 elfsec_data = elf_section_data (stub_entry->stub_sec);
8300 relocs = elfsec_data->relocs;
8301 if (relocs == NULL)
8302 {
8303 bfd_size_type relsize;
8304 relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs);
8305 relocs = bfd_alloc (htab->stub_bfd, relsize);
8306 if (relocs == NULL)
8307 return FALSE;
8308 elfsec_data->relocs = relocs;
8309 elfsec_data->rel_hdr.sh_size = relsize;
8310 elfsec_data->rel_hdr.sh_entsize = 24;
8311 stub_entry->stub_sec->reloc_count = 0;
8312 }
8313 r = relocs + stub_entry->stub_sec->reloc_count;
8314 stub_entry->stub_sec->reloc_count += 1;
8315 r->r_offset = loc - stub_entry->stub_sec->contents;
8316 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8317 r->r_addend = dest;
8318 if (stub_entry->h != NULL)
8319 {
8320 struct elf_link_hash_entry **hashes;
8321 unsigned long symndx;
8322 struct ppc_link_hash_entry *h;
8323
8324 hashes = elf_sym_hashes (htab->stub_bfd);
8325 if (hashes == NULL)
8326 {
8327 bfd_size_type hsize;
8328
8329 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8330 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8331 if (hashes == NULL)
8332 return FALSE;
8333 elf_sym_hashes (htab->stub_bfd) = hashes;
8334 htab->stub_globals = 1;
8335 }
8336 symndx = htab->stub_globals++;
8337 h = stub_entry->h;
8338 hashes[symndx] = &h->elf;
8339 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8340 if (h->oh != NULL && h->oh->is_func)
8341 h = h->oh;
8342 if (h->elf.root.u.def.section != stub_entry->target_section)
8343 /* H is an opd symbol. The addend must be zero. */
8344 r->r_addend = 0;
8345 else
8346 {
8347 off = (h->elf.root.u.def.value
8348 + h->elf.root.u.def.section->output_offset
8349 + h->elf.root.u.def.section->output_section->vma);
8350 r->r_addend -= off;
8351 }
8352 }
8353 }
721956f4 8354 break;
e86ce104 8355
721956f4 8356 case ppc_stub_plt_branch:
ad8e1ba5 8357 case ppc_stub_plt_branch_r2off:
721956f4
AM
8358 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8359 stub_entry->root.string + 9,
b34976b6 8360 FALSE, FALSE);
721956f4
AM
8361 if (br_entry == NULL)
8362 {
8363 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8364 stub_entry->root.string);
b34976b6
AM
8365 htab->stub_error = TRUE;
8366 return FALSE;
721956f4
AM
8367 }
8368
8369 off = (stub_entry->target_value
8370 + stub_entry->target_section->output_offset
8371 + stub_entry->target_section->output_section->vma);
8372
4ce794b7
AM
8373 bfd_put_64 (htab->brlt->owner, off,
8374 htab->brlt->contents + br_entry->offset);
721956f4 8375
ee75fd95 8376 if (htab->relbrlt != NULL)
721956f4
AM
8377 {
8378 /* Create a reloc for the branch lookup table entry. */
8379 Elf_Internal_Rela rela;
ad8e1ba5 8380 bfd_byte *rl;
5d1634d7 8381
721956f4 8382 rela.r_offset = (br_entry->offset
4ce794b7
AM
8383 + htab->brlt->output_offset
8384 + htab->brlt->output_section->vma);
721956f4
AM
8385 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8386 rela.r_addend = off;
8387
4ce794b7
AM
8388 rl = htab->relbrlt->contents;
8389 rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela);
8390 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
721956f4 8391 }
84f5d08e
AM
8392 else if (info->emitrelocations)
8393 {
8394 Elf_Internal_Rela *relocs, *r;
8395 struct bfd_elf_section_data *elfsec_data;
8396
8397 elfsec_data = elf_section_data (htab->brlt);
8398 relocs = elfsec_data->relocs;
8399 if (relocs == NULL)
8400 {
8401 bfd_size_type relsize;
8402 relsize = htab->brlt->reloc_count * sizeof (*relocs);
8403 relocs = bfd_alloc (htab->brlt->owner, relsize);
8404 if (relocs == NULL)
8405 return FALSE;
8406 elfsec_data->relocs = relocs;
8407 elfsec_data->rel_hdr.sh_size = relsize;
8408 elfsec_data->rel_hdr.sh_entsize = 24;
8409 htab->brlt->reloc_count = 0;
8410 }
8411 r = relocs + htab->brlt->reloc_count;
8412 htab->brlt->reloc_count += 1;
8413 r->r_offset = (br_entry->offset
8414 + htab->brlt->output_offset
8415 + htab->brlt->output_section->vma);
8416 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
8417 r->r_addend = off;
8418 }
721956f4
AM
8419
8420 off = (br_entry->offset
4ce794b7
AM
8421 + htab->brlt->output_offset
8422 + htab->brlt->output_section->vma
8423 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8424 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8425
ad8e1ba5 8426 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM
8427 {
8428 (*_bfd_error_handler)
e86ce104 8429 (_("linkage table error against `%s'"),
721956f4 8430 stub_entry->root.string);
5d1634d7 8431 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
8432 htab->stub_error = TRUE;
8433 return FALSE;
5d1634d7 8434 }
41bd81ab 8435
721956f4 8436 indx = off;
ad8e1ba5
AM
8437 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8438 {
97b639ba 8439 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8440 loc += 4;
97b639ba 8441 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5
AM
8442 size = 16;
8443 }
8444 else
8445 {
8446 bfd_vma r2off;
8447
8448 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8449 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8450 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8451 loc += 4;
97b639ba 8452 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc);
ad8e1ba5 8453 loc += 4;
97b639ba 8454 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc);
ad8e1ba5 8455 loc += 4;
97b639ba 8456 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
ad8e1ba5 8457 loc += 4;
97b639ba 8458 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
8459 size = 28;
8460 }
8461 loc += 4;
97b639ba 8462 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8463 loc += 4;
97b639ba 8464 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8465 break;
5d1634d7 8466
721956f4 8467 case ppc_stub_plt_call:
c862ae31
AM
8468 /* Do the best we can for shared libraries built without
8469 exporting ".foo" for each "foo". This can happen when symbol
8470 versioning scripts strip all bar a subset of symbols. */
8387904d
AM
8471 if (stub_entry->h->oh != NULL
8472 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8473 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM
8474 {
8475 /* Point the symbol at the stub. There may be multiple stubs,
8476 we don't really care; The main thing is to make this sym
8f3bab57
AM
8477 defined somewhere. Maybe defining the symbol in the stub
8478 section is a silly idea. If we didn't do this, htab->top_id
8479 could disappear. */
34814b9f
AM
8480 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8481 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8482 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM
8483 }
8484
721956f4 8485 /* Now build the stub. */
411e1bfb
AM
8486 off = (bfd_vma) -1;
8487 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8488 if (ent->addend == stub_entry->addend)
8489 {
8490 off = ent->plt.offset;
8491 break;
8492 }
721956f4
AM
8493 if (off >= (bfd_vma) -2)
8494 abort ();
8495
8496 off &= ~ (bfd_vma) 1;
4ce794b7
AM
8497 off += (htab->plt->output_offset
8498 + htab->plt->output_section->vma
8499 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8500 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8501
ad8e1ba5 8502 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM
8503 {
8504 (*_bfd_error_handler)
8505 (_("linkage table error against `%s'"),
8506 stub_entry->h->elf.root.root.string);
8507 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
8508 htab->stub_error = TRUE;
8509 return FALSE;
721956f4
AM
8510 }
8511
97b639ba 8512 p = build_plt_stub (htab->stub_bfd, loc, off);
721956f4
AM
8513 size = p - loc;
8514 break;
8515
8516 default:
8517 BFD_FAIL ();
b34976b6 8518 return FALSE;
721956f4
AM
8519 }
8520
eea6121a 8521 stub_entry->stub_sec->size += size;
97b639ba 8522
ee75fd95 8523 if (htab->emit_stub_syms)
97b639ba
AM
8524 {
8525 struct elf_link_hash_entry *h;
ee75fd95
AM
8526 size_t len1, len2;
8527 char *name;
8528 const char *const stub_str[] = { "long_branch",
8529 "long_branch_r2off",
8530 "plt_branch",
8531 "plt_branch_r2off",
8532 "plt_call" };
8533
8534 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8535 len2 = strlen (stub_entry->root.string);
8536 name = bfd_malloc (len1 + len2 + 2);
8537 if (name == NULL)
8538 return FALSE;
8539 memcpy (name, stub_entry->root.string, 9);
8540 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8541 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8542 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM
8543 if (h == NULL)
8544 return FALSE;
8545 if (h->root.type == bfd_link_hash_new)
8546 {
8547 h->root.type = bfd_link_hash_defined;
8548 h->root.u.def.section = stub_entry->stub_sec;
8549 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM
8550 h->ref_regular = 1;
8551 h->def_regular = 1;
8552 h->ref_regular_nonweak = 1;
8553 h->forced_local = 1;
8554 h->non_elf = 0;
97b639ba
AM
8555 }
8556 }
8557
b34976b6 8558 return TRUE;
721956f4
AM
8559}
8560
8561/* As above, but don't actually build the stub. Just bump offset so
8562 we know stub section sizes, and select plt_branch stubs where
8563 long_branch stubs won't do. */
8564
b34976b6 8565static bfd_boolean
4ce794b7 8566ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM
8567{
8568 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8569 struct bfd_link_info *info;
721956f4
AM
8570 struct ppc_link_hash_table *htab;
8571 bfd_vma off;
8572 int size;
8573
8574 /* Massage our args to the form they really have. */
8575 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM
8576 info = in_arg;
8577
8578 htab = ppc_hash_table (info);
721956f4
AM
8579
8580 if (stub_entry->stub_type == ppc_stub_plt_call)
8581 {
411e1bfb 8582 struct plt_entry *ent;
58ac9f71 8583 off = (bfd_vma) -1;
411e1bfb
AM
8584 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8585 if (ent->addend == stub_entry->addend)
8586 {
8587 off = ent->plt.offset & ~(bfd_vma) 1;
8588 break;
8589 }
58ac9f71 8590 if (off >= (bfd_vma) -2)
411e1bfb 8591 abort ();
4ce794b7
AM
8592 off += (htab->plt->output_offset
8593 + htab->plt->output_section->vma
8594 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8595 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8596
ad8e1ba5 8597 size = PLT_CALL_STUB_SIZE;
4ce794b7 8598 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4
AM
8599 size += 4;
8600 }
8601 else
8602 {
ad8e1ba5
AM
8603 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8604 variants. */
721956f4
AM
8605 off = (stub_entry->target_value
8606 + stub_entry->target_section->output_offset
8607 + stub_entry->target_section->output_section->vma);
eea6121a 8608 off -= (stub_entry->stub_sec->size
721956f4
AM
8609 + stub_entry->stub_sec->output_offset
8610 + stub_entry->stub_sec->output_section->vma);
8611
ad8e1ba5
AM
8612 /* Reset the stub type from the plt variant in case we now
8613 can reach with a shorter stub. */
8614 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8615 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8616
8617 size = 4;
8618 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8619 {
8620 off -= 12;
8621 size = 16;
8622 }
8623
8624 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM
8625 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8626 {
8627 struct ppc_branch_hash_entry *br_entry;
8628
8629 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8630 stub_entry->root.string + 9,
b34976b6 8631 TRUE, FALSE);
721956f4
AM
8632 if (br_entry == NULL)
8633 {
8634 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8635 stub_entry->root.string);
b34976b6
AM
8636 htab->stub_error = TRUE;
8637 return FALSE;
721956f4
AM
8638 }
8639
8640 if (br_entry->iter != htab->stub_iteration)
8641 {
8642 br_entry->iter = htab->stub_iteration;
eea6121a
AM
8643 br_entry->offset = htab->brlt->size;
8644 htab->brlt->size += 8;
63bc6f6c 8645
ee75fd95 8646 if (htab->relbrlt != NULL)
eea6121a 8647 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM
8648 else if (info->emitrelocations)
8649 {
8650 htab->brlt->reloc_count += 1;
8651 htab->brlt->flags |= SEC_RELOC;
8652 }
721956f4 8653 }
ad8e1ba5
AM
8654
8655 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
721956f4 8656 size = 16;
ad8e1ba5
AM
8657 if (stub_entry->stub_type != ppc_stub_plt_branch)
8658 size = 28;
721956f4 8659 }
84f5d08e
AM
8660 else if (info->emitrelocations)
8661 {
8662 stub_entry->stub_sec->reloc_count += 1;
8663 stub_entry->stub_sec->flags |= SEC_RELOC;
8664 }
721956f4
AM
8665 }
8666
eea6121a 8667 stub_entry->stub_sec->size += size;
b34976b6 8668 return TRUE;
721956f4
AM
8669}
8670
8671/* Set up various things so that we can make a list of input sections
8672 for each output section included in the link. Returns -1 on error,
cedb70c5 8673 0 when no stubs will be needed, and 1 on success. */
721956f4
AM
8674
8675int
4c52953f
AM
8676ppc64_elf_setup_section_lists (bfd *output_bfd,
8677 struct bfd_link_info *info,
8678 int no_multi_toc)
721956f4
AM
8679{
8680 bfd *input_bfd;
734b6cf9 8681 int top_id, top_index, id;
721956f4 8682 asection *section;
734b6cf9 8683 asection **input_list;
721956f4
AM
8684 bfd_size_type amt;
8685 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8686
4c52953f
AM
8687 htab->no_multi_toc = no_multi_toc;
8688
4ce794b7 8689 if (htab->brlt == NULL)
721956f4
AM
8690 return 0;
8691
1e2f5b6e 8692 /* Find the top input section id. */
3d6f9012 8693 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM
8694 input_bfd != NULL;
8695 input_bfd = input_bfd->link_next)
8696 {
721956f4
AM
8697 for (section = input_bfd->sections;
8698 section != NULL;
8699 section = section->next)
8700 {
8701 if (top_id < section->id)
8702 top_id = section->id;
8703 }
8704 }
721956f4 8705
8f3bab57 8706 htab->top_id = top_id;
721956f4 8707 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8708 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM
8709 if (htab->stub_group == NULL)
8710 return -1;
8711
3d6f9012
AM
8712 /* Set toc_off for com, und, abs and ind sections. */
8713 for (id = 0; id < 3; id++)
8714 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8715
3d6f9012 8716 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM
8717
8718 /* We can't use output_bfd->section_count here to find the top output
8719 section index as some sections may have been removed, and
8423293d 8720 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM
8721 for (section = output_bfd->sections, top_index = 0;
8722 section != NULL;
8723 section = section->next)
8724 {
8725 if (top_index < section->index)
8726 top_index = section->index;
8727 }
8728
8729 htab->top_index = top_index;
8730 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8731 input_list = bfd_zmalloc (amt);
734b6cf9
AM
8732 htab->input_list = input_list;
8733 if (input_list == NULL)
8734 return -1;
8735
721956f4
AM
8736 return 1;
8737}
8738
e717da7e
AM
8739/* The linker repeatedly calls this function for each TOC input section
8740 and linker generated GOT section. Group input bfds such that the toc
8741 within a group is less than 64k in size. Will break with cute linker
8742 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM
8743
8744void
4ce794b7 8745ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM
8746{
8747 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8748
4c52953f
AM
8749 if (!htab->no_multi_toc)
8750 {
8751 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8752 bfd_vma off = addr - htab->toc_curr;
8753
8754 if (off + isec->size > 0x10000)
8755 htab->toc_curr = addr;
99877b66 8756
4c52953f
AM
8757 elf_gp (isec->owner) = (htab->toc_curr
8758 - elf_gp (isec->output_section->owner)
8759 + TOC_BASE_OFF);
8760 }
ad8e1ba5
AM
8761}
8762
8763/* Called after the last call to the above function. */
8764
8765void
4c52953f 8766ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM
8767{
8768 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8769
4c52953f
AM
8770 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8771
ad8e1ba5
AM
8772 /* toc_curr tracks the TOC offset used for code sections below in
8773 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8774 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM
8775}
8776
9b5ecbd0
AM
8777/* No toc references were found in ISEC. If the code in ISEC makes no
8778 calls, then there's no need to use toc adjusting stubs when branching
8779 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM
8780 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8781 needed, and 2 if a cyclical call-graph was found but no other reason
8782 for a stub was detected. If called from the top level, a return of
8783 2 means the same as a return of 0. */
9b5ecbd0
AM
8784
8785static int
4ce794b7 8786toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8787{
4c52953f
AM
8788 Elf_Internal_Rela *relstart, *rel;
8789 Elf_Internal_Sym *local_syms;
9b5ecbd0 8790 int ret;
4c52953f 8791 struct ppc_link_hash_table *htab;
9b5ecbd0 8792
772119ce
AM
8793 /* We know none of our code bearing sections will need toc stubs. */
8794 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8795 return 0;
8796
eea6121a 8797 if (isec->size == 0)
082c50f8
AM
8798 return 0;
8799
4c52953f
AM
8800 if (isec->output_section == NULL)
8801 return 0;
8802
9b5ecbd0
AM
8803 /* Hack for linux kernel. .fixup contains branches, but only back to
8804 the function that hit an exception. */
4c52953f
AM
8805 if (strcmp (isec->name, ".fixup") == 0)
8806 return 0;
9b5ecbd0 8807
4c52953f
AM
8808 if (isec->reloc_count == 0)
8809 return 0;
8810
8811 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8812 info->keep_memory);
8813 if (relstart == NULL)
8814 return -1;
8815
8816 /* Look for branches to outside of this section. */
8817 local_syms = NULL;
8818 ret = 0;
8819 htab = ppc_hash_table (info);
8820 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 8821 {
4c52953f
AM
8822 enum elf_ppc64_reloc_type r_type;
8823 unsigned long r_symndx;
8824 struct elf_link_hash_entry *h;
8825 Elf_Internal_Sym *sym;
8826 asection *sym_sec;
8827 long *opd_adjust;
8828 bfd_vma sym_value;
8829 bfd_vma dest;
8830
8831 r_type = ELF64_R_TYPE (rel->r_info);
8832 if (r_type != R_PPC64_REL24
8833 && r_type != R_PPC64_REL14
8834 && r_type != R_PPC64_REL14_BRTAKEN
8835 && r_type != R_PPC64_REL14_BRNTAKEN)
8836 continue;
8837
8838 r_symndx = ELF64_R_SYM (rel->r_info);
8839 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
8840 isec->owner))
9b5ecbd0 8841 {
4c52953f
AM
8842 ret = -1;
8843 break;
9b5ecbd0 8844 }
9b5ecbd0 8845
2917689a
AM
8846 /* Calls to dynamic lib functions go through a plt call stub
8847 that uses r2. Branches to undefined symbols might be a call
8848 using old-style dot symbols that can be satisfied by a plt
8849 call into a new-style dynamic library. */
4c52953f 8850 if (sym_sec == NULL)
2917689a
AM
8851 {
8852 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8853 if (eh != NULL
8854 && eh->oh != NULL
8855 && eh->oh->elf.plt.plist != NULL)
8856 {
8857 ret = 1;
8858 break;
8859 }
4c52953f 8860
2917689a
AM
8861 /* Ignore other undefined symbols. */
8862 continue;
8863 }
8864
8865 /* Assume branches to other sections not included in the link need
8866 stubs too, to cover -R and absolute syms. */
4c52953f
AM
8867 if (sym_sec->output_section == NULL)
8868 {
8869 ret = 1;
8870 break;
8871 }
8872
8873 if (h == NULL)
8874 sym_value = sym->st_value;
8875 else
8876 {
8877 if (h->root.type != bfd_link_hash_defined
8878 && h->root.type != bfd_link_hash_defweak)
8879 abort ();
8880 sym_value = h->root.u.def.value;
8881 }
8882 sym_value += rel->r_addend;
8883
8884 /* If this branch reloc uses an opd sym, find the code section. */
8885 opd_adjust = get_opd_info (sym_sec);
8886 if (opd_adjust != NULL)
8887 {
4c52953f
AM
8888 if (h == NULL)
8889 {
8890 long adjust;
8891
8892 adjust = opd_adjust[sym->st_value / 8];
8893 if (adjust == -1)
8894 /* Assume deleted functions won't ever be called. */
8895 continue;
8896 sym_value += adjust;
8897 }
8898
8899 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
8900 if (dest == (bfd_vma) -1)
8901 continue;
8902 }
8903 else
8904 dest = (sym_value
8905 + sym_sec->output_offset
8906 + sym_sec->output_section->vma);
8907
8908 /* Ignore branch to self. */
8909 if (sym_sec == isec)
8910 continue;
8911
8912 /* If the called function uses the toc, we need a stub. */
8913 if (sym_sec->has_toc_reloc
8914 || sym_sec->makes_toc_func_call)
8915 {
8916 ret = 1;
8917 break;
8918 }
8919
8920 /* Assume any branch that needs a long branch stub might in fact
8921 need a plt_branch stub. A plt_branch stub uses r2. */
8922 else if (dest - (isec->output_offset
8923 + isec->output_section->vma
8924 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM
8925 {
8926 ret = 1;
8927 break;
8928 }
4c52953f
AM
8929
8930 /* If calling back to a section in the process of being tested, we
8931 can't say for sure that no toc adjusting stubs are needed, so
8932 don't return zero. */
8933 else if (sym_sec->call_check_in_progress)
8934 ret = 2;
8935
8936 /* Branches to another section that itself doesn't have any TOC
8937 references are OK. Recursively call ourselves to check. */
8938 else if (sym_sec->id <= htab->top_id
8939 && htab->stub_group[sym_sec->id].toc_off == 0)
8940 {
8941 int recur;
8942
8943 /* Mark current section as indeterminate, so that other
8944 sections that call back to current won't be marked as
8945 known. */
8946 isec->call_check_in_progress = 1;
8947 recur = toc_adjusting_stub_needed (info, sym_sec);
8948 isec->call_check_in_progress = 0;
8949
8950 if (recur < 0)
8951 {
8952 /* An error. Exit. */
8953 ret = -1;
8954 break;
8955 }
8956 else if (recur <= 1)
8957 {
8958 /* Known result. Mark as checked and set section flag. */
8959 htab->stub_group[sym_sec->id].toc_off = 1;
8960 if (recur != 0)
8961 {
8962 sym_sec->makes_toc_func_call = 1;
8963 ret = 1;
8964 break;
8965 }
8966 }
8967 else
8968 {
8969 /* Unknown result. Continue checking. */
8970 ret = 2;
8971 }
8972 }
9b5ecbd0
AM
8973 }
8974
4c52953f
AM
8975 if (local_syms != NULL
8976 && (elf_tdata (isec->owner)->symtab_hdr.contents
8977 != (unsigned char *) local_syms))
8978 free (local_syms);
8979 if (elf_section_data (isec)->relocs != relstart)
8980 free (relstart);
8981
9b5ecbd0
AM
8982 return ret;
8983}
8984
721956f4
AM
8985/* The linker repeatedly calls this function for each input section,
8986 in the order that input sections are linked into output sections.
8987 Build lists of input sections to determine groupings between which
8988 we may insert linker stubs. */
8989
9b5ecbd0 8990bfd_boolean
4ce794b7 8991ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM
8992{
8993 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8994
734b6cf9
AM
8995 if ((isec->output_section->flags & SEC_CODE) != 0
8996 && isec->output_section->index <= htab->top_index)
721956f4 8997 {
734b6cf9 8998 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 8999 /* Steal the link_sec pointer for our list. */
721956f4 9000#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM
9001 /* This happens to make the list in reverse order,
9002 which is what we want. */
734b6cf9
AM
9003 PREV_SEC (isec) = *list;
9004 *list = isec;
721956f4 9005 }
ad8e1ba5 9006
4c52953f 9007 if (htab->multi_toc_needed)
9b5ecbd0 9008 {
4c52953f
AM
9009 /* If a code section has a function that uses the TOC then we need
9010 to use the right TOC (obviously). Also, make sure that .opd gets
9011 the correct TOC value for R_PPC64_TOC relocs that don't have or
9012 can't find their function symbol (shouldn't ever happen now). */
9013 if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0)
9014 {
9015 if (elf_gp (isec->owner) != 0)
9016 htab->toc_curr = elf_gp (isec->owner);
9017 }
9018 else if (htab->stub_group[isec->id].toc_off == 0)
9019 {
9020 int ret = toc_adjusting_stub_needed (info, isec);
9021 if (ret < 0)
9022 return FALSE;
9023 else
9024 isec->makes_toc_func_call = ret & 1;
9025 }
9b5ecbd0 9026 }
ad8e1ba5
AM
9027
9028 /* Functions that don't use the TOC can belong in any TOC group.
9029 Use the last TOC base. This happens to make _init and _fini
9030 pasting work. */
9031 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9032 return TRUE;
721956f4
AM
9033}
9034
9035/* See whether we can group stub sections together. Grouping stub
9036 sections may result in fewer stubs. More importantly, we need to
9037 put all .init* and .fini* stubs at the beginning of the .init or
9038 .fini output sections respectively, because glibc splits the
9039 _init and _fini functions into multiple parts. Putting a stub in
9040 the middle of a function is not a good idea. */
9041
9042static void
4ce794b7
AM
9043group_sections (struct ppc_link_hash_table *htab,
9044 bfd_size_type stub_group_size,
9045 bfd_boolean stubs_always_before_branch)
721956f4 9046{
7c8fe5c4
AM
9047 asection **list;
9048 bfd_size_type stub14_group_size;
9049 bfd_boolean suppress_size_errors;
9050
9051 suppress_size_errors = FALSE;
9052 stub14_group_size = stub_group_size;
9053 if (stub_group_size == 1)
9054 {
9055 /* Default values. */
9056 if (stubs_always_before_branch)
9057 {
9058 stub_group_size = 0x1e00000;
9059 stub14_group_size = 0x7800;
9060 }
9061 else
9062 {
9063 stub_group_size = 0x1c00000;
9064 stub14_group_size = 0x7000;
9065 }
9066 suppress_size_errors = TRUE;
9067 }
9068
9069 list = htab->input_list + htab->top_index;
734b6cf9 9070 do
721956f4 9071 {
734b6cf9
AM
9072 asection *tail = *list;
9073 while (tail != NULL)
721956f4 9074 {
734b6cf9
AM
9075 asection *curr;
9076 asection *prev;
9077 bfd_size_type total;
9078 bfd_boolean big_sec;
9079 bfd_vma curr_toc;
9080
9081 curr = tail;
eea6121a 9082 total = tail->size;
7c8fe5c4
AM
9083 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9084 ? stub14_group_size : stub_group_size);
9085 if (big_sec && !suppress_size_errors)
5c3dead3
AM
9086 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9087 tail->owner, tail);
734b6cf9
AM
9088 curr_toc = htab->stub_group[tail->id].toc_off;
9089
9090 while ((prev = PREV_SEC (curr)) != NULL
9091 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM
9092 < (ppc64_elf_section_data (prev)->has_14bit_branch
9093 ? stub14_group_size : stub_group_size))
ad8e1ba5 9094 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM
9095 curr = prev;
9096
9097 /* OK, the size from the start of CURR to the end is less
9098 than stub_group_size and thus can be handled by one stub
9099 section. (or the tail section is itself larger than
9100 stub_group_size, in which case we may be toast.) We
9101 should really be keeping track of the total size of stubs
9102 added here, as stubs contribute to the final output
9103 section size. That's a little tricky, and this way will
9104 only break if stubs added make the total size more than
9105 2^25, ie. for the default stub_group_size, if stubs total
9106 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9107 do
721956f4
AM
9108 {
9109 prev = PREV_SEC (tail);
734b6cf9 9110 /* Set up this stub group. */
721956f4
AM
9111 htab->stub_group[tail->id].link_sec = curr;
9112 }
734b6cf9
AM
9113 while (tail != curr && (tail = prev) != NULL);
9114
9115 /* But wait, there's more! Input sections up to stub_group_size
9116 bytes before the stub section can be handled by it too.
9117 Don't do this if we have a really large section after the
9118 stubs, as adding more stubs increases the chance that
9119 branches may not reach into the stub section. */
9120 if (!stubs_always_before_branch && !big_sec)
9121 {
9122 total = 0;
9123 while (prev != NULL
9124 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM
9125 < (ppc64_elf_section_data (prev)->has_14bit_branch
9126 ? stub14_group_size : stub_group_size))
734b6cf9
AM
9127 && htab->stub_group[prev->id].toc_off == curr_toc)
9128 {
9129 tail = prev;
9130 prev = PREV_SEC (tail);
9131 htab->stub_group[tail->id].link_sec = curr;
9132 }
9133 }
9134 tail = prev;
721956f4
AM
9135 }
9136 }
734b6cf9
AM
9137 while (list-- != htab->input_list);
9138 free (htab->input_list);
721956f4
AM
9139#undef PREV_SEC
9140}
9141
721956f4
AM
9142/* Determine and set the size of the stub section for a final link.
9143
9144 The basic idea here is to examine all the relocations looking for
9145 PC-relative calls to a target that is unreachable with a "bl"
9146 instruction. */
9147
b34976b6 9148bfd_boolean
4ce794b7 9149ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM
9150 struct bfd_link_info *info,
9151 bfd_signed_vma group_size,
9152 asection *(*add_stub_section) (const char *, asection *),
9153 void (*layout_sections_again) (void))
721956f4
AM
9154{
9155 bfd_size_type stub_group_size;
b34976b6 9156 bfd_boolean stubs_always_before_branch;
721956f4
AM
9157 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9158
9159 /* Stash our params away. */
721956f4
AM
9160 htab->add_stub_section = add_stub_section;
9161 htab->layout_sections_again = layout_sections_again;
9162 stubs_always_before_branch = group_size < 0;
9163 if (group_size < 0)
9164 stub_group_size = -group_size;
9165 else
9166 stub_group_size = group_size;
721956f4
AM
9167
9168 group_sections (htab, stub_group_size, stubs_always_before_branch);
9169
721956f4
AM
9170 while (1)
9171 {
9172 bfd *input_bfd;
9173 unsigned int bfd_indx;
9174 asection *stub_sec;
721956f4
AM
9175
9176 htab->stub_iteration += 1;
721956f4
AM
9177
9178 for (input_bfd = info->input_bfds, bfd_indx = 0;
9179 input_bfd != NULL;
9180 input_bfd = input_bfd->link_next, bfd_indx++)
9181 {
9182 Elf_Internal_Shdr *symtab_hdr;
9183 asection *section;
6cdc0ccc 9184 Elf_Internal_Sym *local_syms = NULL;
721956f4 9185
67f93c31
AM
9186 if (!is_ppc64_elf_target (input_bfd->xvec))
9187 continue;
9188
721956f4
AM
9189 /* We'll need the symbol table in a second. */
9190 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9191 if (symtab_hdr->sh_info == 0)
9192 continue;
9193
721956f4
AM
9194 /* Walk over each section attached to the input bfd. */
9195 for (section = input_bfd->sections;
9196 section != NULL;
9197 section = section->next)
9198 {
721956f4 9199 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM
9200
9201 /* If there aren't any relocs, then there's nothing more
9202 to do. */
9203 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM
9204 || (section->flags & SEC_ALLOC) == 0
9205 || (section->flags & SEC_LOAD) == 0
9206 || (section->flags & SEC_CODE) == 0
721956f4
AM
9207 || section->reloc_count == 0)
9208 continue;
9209
9210 /* If this section is a link-once section that will be
9211 discarded, then don't create any stubs. */
9212 if (section->output_section == NULL
9213 || section->output_section->owner != output_bfd)
9214 continue;
9215
1e2f5b6e
AM
9216 /* Get the relocs. */
9217 internal_relocs
4ce794b7 9218 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9219 info->keep_memory);
721956f4 9220 if (internal_relocs == NULL)
1e2f5b6e 9221 goto error_ret_free_local;
721956f4
AM
9222
9223 /* Now examine each relocation. */
9224 irela = internal_relocs;
9225 irelaend = irela + section->reloc_count;
9226 for (; irela < irelaend; irela++)
9227 {
4ce794b7
AM
9228 enum elf_ppc64_reloc_type r_type;
9229 unsigned int r_indx;
721956f4
AM
9230 enum ppc_stub_type stub_type;
9231 struct ppc_stub_hash_entry *stub_entry;
8387904d 9232 asection *sym_sec, *code_sec;
721956f4
AM
9233 bfd_vma sym_value;
9234 bfd_vma destination;
8843416a 9235 bfd_boolean ok_dest;
721956f4 9236 struct ppc_link_hash_entry *hash;
8387904d 9237 struct ppc_link_hash_entry *fdh;
411e1bfb
AM
9238 struct elf_link_hash_entry *h;
9239 Elf_Internal_Sym *sym;
721956f4
AM
9240 char *stub_name;
9241 const asection *id_sec;
8387904d 9242 long *opd_adjust;
721956f4
AM
9243
9244 r_type = ELF64_R_TYPE (irela->r_info);
9245 r_indx = ELF64_R_SYM (irela->r_info);
9246
4ce794b7 9247 if (r_type >= R_PPC64_max)
721956f4
AM
9248 {
9249 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9250 goto error_ret_free_internal;
721956f4
AM
9251 }
9252
9253 /* Only look for stubs on branch instructions. */
4ce794b7
AM
9254 if (r_type != R_PPC64_REL24
9255 && r_type != R_PPC64_REL14
9256 && r_type != R_PPC64_REL14_BRTAKEN
9257 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM
9258 continue;
9259
9260 /* Now determine the call target, its name, value,
9261 section. */
411e1bfb
AM
9262 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9263 r_indx, input_bfd))
9264 goto error_ret_free_internal;
9265 hash = (struct ppc_link_hash_entry *) h;
9266
8843416a 9267 ok_dest = FALSE;
8387904d 9268 fdh = NULL;
7fe2b9a6 9269 sym_value = 0;
411e1bfb 9270 if (hash == NULL)
721956f4 9271 {
411e1bfb 9272 sym_value = sym->st_value;
8843416a 9273 ok_dest = TRUE;
721956f4 9274 }
7fe2b9a6
AM
9275 else if (hash->elf.root.type == bfd_link_hash_defined
9276 || hash->elf.root.type == bfd_link_hash_defweak)
9277 {
9278 sym_value = hash->elf.root.u.def.value;
9279 if (sym_sec->output_section != NULL)
9280 ok_dest = TRUE;
9281 }
9282 else if (hash->elf.root.type == bfd_link_hash_undefweak
9283 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9284 {
99877b66 9285 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM
9286 use the func descriptor sym instead if it is
9287 defined. */
ceb1f1ef 9288 if (hash->elf.root.root.string[0] == '.'
8387904d
AM
9289 && (fdh = get_fdh (hash, htab)) != NULL)
9290 {
8387904d
AM
9291 if (fdh->elf.root.type == bfd_link_hash_defined
9292 || fdh->elf.root.type == bfd_link_hash_defweak)
9293 {
9294 sym_sec = fdh->elf.root.u.def.section;
9295 sym_value = fdh->elf.root.u.def.value;
9296 if (sym_sec->output_section != NULL)
9297 ok_dest = TRUE;
9298 }
99877b66
AM
9299 else
9300 fdh = NULL;
8387904d 9301 }
7fe2b9a6
AM
9302 }
9303 else
9304 {
9305 bfd_set_error (bfd_error_bad_value);
9306 goto error_ret_free_internal;
721956f4
AM
9307 }
9308
8843416a
AM
9309 destination = 0;
9310 if (ok_dest)
9311 {
9312 sym_value += irela->r_addend;
9313 destination = (sym_value
9314 + sym_sec->output_offset
9315 + sym_sec->output_section->vma);
9316 }
9317
8387904d
AM
9318 code_sec = sym_sec;
9319 opd_adjust = get_opd_info (sym_sec);
9320 if (opd_adjust != NULL)
9321 {
9322 bfd_vma dest;
9323
9324 if (hash == NULL)
9325 {
3f764659 9326 long adjust = opd_adjust[sym_value / 8];
8387904d
AM
9327 if (adjust == -1)
9328 continue;
9329 sym_value += adjust;
9330 }
9331 dest = opd_entry_value (sym_sec, sym_value,
9332 &code_sec, &sym_value);
9333 if (dest != (bfd_vma) -1)
9334 {
9335 destination = dest;
9336 if (fdh != NULL)
9337 {
9338 /* Fixup old ABI sym to point at code
9339 entry. */
99877b66 9340 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM
9341 hash->elf.root.u.def.section = code_sec;
9342 hash->elf.root.u.def.value = sym_value;
9343 }
9344 }
9345 }
9346
721956f4
AM
9347 /* Determine what (if any) linker stub is needed. */
9348 stub_type = ppc_type_of_stub (section, irela, &hash,
9349 destination);
ad8e1ba5
AM
9350
9351 if (stub_type != ppc_stub_plt_call)
9352 {
9353 /* Check whether we need a TOC adjusting stub.
9354 Since the linker pastes together pieces from
9355 different object files when creating the
9356 _init and _fini functions, it may be that a
9357 call to what looks like a local sym is in
9358 fact a call needing a TOC adjustment. */
8387904d
AM
9359 if (code_sec != NULL
9360 && code_sec->output_section != NULL
9361 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9362 != htab->stub_group[section->id].toc_off)
4c52953f
AM
9363 && (code_sec->has_toc_reloc
9364 || code_sec->makes_toc_func_call))
ad8e1ba5
AM
9365 stub_type = ppc_stub_long_branch_r2off;
9366 }
9367
721956f4
AM
9368 if (stub_type == ppc_stub_none)
9369 continue;
9370
411e1bfb
AM
9371 /* __tls_get_addr calls might be eliminated. */
9372 if (stub_type != ppc_stub_plt_call
9373 && hash != NULL
8387904d
AM
9374 && (hash == htab->tls_get_addr
9375 || hash == htab->tls_get_addr_fd)
411e1bfb
AM
9376 && section->has_tls_reloc
9377 && irela != internal_relocs)
9378 {
9379 /* Get tls info. */
e7b938ca 9380 char *tls_mask;
411e1bfb 9381
0d4792f7 9382 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM
9383 irela - 1, input_bfd))
9384 goto error_ret_free_internal;
e7b938ca 9385 if (*tls_mask != 0)
411e1bfb
AM
9386 continue;
9387 }
9388
721956f4
AM
9389 /* Support for grouping stub sections. */
9390 id_sec = htab->stub_group[section->id].link_sec;
9391
9392 /* Get the name of this stub. */
9393 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9394 if (!stub_name)
9395 goto error_ret_free_internal;
9396
9397 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9398 stub_name, FALSE, FALSE);
721956f4
AM
9399 if (stub_entry != NULL)
9400 {
9401 /* The proper stub has already been created. */
9402 free (stub_name);
9403 continue;
9404 }
9405
9406 stub_entry = ppc_add_stub (stub_name, section, htab);
9407 if (stub_entry == NULL)
9408 {
9409 free (stub_name);
6cdc0ccc
AM
9410 error_ret_free_internal:
9411 if (elf_section_data (section)->relocs == NULL)
9412 free (internal_relocs);
9413 error_ret_free_local:
9414 if (local_syms != NULL
9415 && (symtab_hdr->contents
9416 != (unsigned char *) local_syms))
9417 free (local_syms);
b34976b6 9418 return FALSE;
721956f4
AM
9419 }
9420
ad8e1ba5 9421 stub_entry->stub_type = stub_type;
721956f4 9422 stub_entry->target_value = sym_value;
8387904d 9423 stub_entry->target_section = code_sec;
721956f4 9424 stub_entry->h = hash;
411e1bfb 9425 stub_entry->addend = irela->r_addend;
ee75fd95
AM
9426
9427 if (stub_entry->h != NULL)
9428 htab->stub_globals += 1;
721956f4
AM
9429 }
9430
9431 /* We're done with the internal relocs, free them. */
6cdc0ccc 9432 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9433 free (internal_relocs);
721956f4 9434 }
6cdc0ccc
AM
9435
9436 if (local_syms != NULL
9437 && symtab_hdr->contents != (unsigned char *) local_syms)
9438 {
9439 if (!info->keep_memory)
9440 free (local_syms);
9441 else
9442 symtab_hdr->contents = (unsigned char *) local_syms;
9443 }
721956f4
AM
9444 }
9445
5c3dead3 9446 /* We may have added some stubs. Find out the new size of the
721956f4
AM
9447 stub sections. */
9448 for (stub_sec = htab->stub_bfd->sections;
9449 stub_sec != NULL;
9450 stub_sec = stub_sec->next)
e717da7e 9451 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9452 {
5c3dead3 9453 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM
9454 stub_sec->size = 0;
9455 stub_sec->reloc_count = 0;
84f5d08e 9456 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9457 }
eea6121a
AM
9458
9459 htab->brlt->size = 0;
84f5d08e
AM
9460 htab->brlt->reloc_count = 0;
9461 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9462 if (htab->relbrlt != NULL)
eea6121a 9463 htab->relbrlt->size = 0;
721956f4 9464
63bc6f6c 9465 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9466
5c3dead3
AM
9467 for (stub_sec = htab->stub_bfd->sections;
9468 stub_sec != NULL;
9469 stub_sec = stub_sec->next)
9470 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9471 && stub_sec->rawsize != stub_sec->size)
9472 break;
9473
9474 /* Exit from this loop when no stubs have been added, and no stubs
9475 have changed size. */
9476 if (stub_sec == NULL)
9477 break;
9478
721956f4
AM
9479 /* Ask the linker to do its stuff. */
9480 (*htab->layout_sections_again) ();
9481 }
9482
c456f082 9483 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM
9484 section is empty, but it's too late. If we strip sections here,
9485 the dynamic symbol table is corrupted since the section symbol
9486 for the stripped section isn't written. */
721956f4 9487
b34976b6 9488 return TRUE;
721956f4
AM
9489}
9490
9491/* Called after we have determined section placement. If sections
805fc799 9492 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9493
805fc799 9494bfd_vma
4ce794b7 9495ppc64_elf_toc (bfd *obfd)
721956f4 9496{
805fc799
AM
9497 asection *s;
9498 bfd_vma TOCstart;
721956f4 9499
805fc799
AM
9500 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9501 order. The TOC starts where the first of these sections starts. */
9502 s = bfd_get_section_by_name (obfd, ".got");
9503 if (s == NULL)
9504 s = bfd_get_section_by_name (obfd, ".toc");
9505 if (s == NULL)
9506 s = bfd_get_section_by_name (obfd, ".tocbss");
9507 if (s == NULL)
9508 s = bfd_get_section_by_name (obfd, ".plt");
9509 if (s == NULL)
9510 {
9511 /* This may happen for
9512 o references to TOC base (SYM@toc / TOC[tc0]) without a
9513 .toc directive
9514 o bad linker script
9515 o --gc-sections and empty TOC sections
9516
9517 FIXME: Warn user? */
9518
9519 /* Look for a likely section. We probably won't even be
9520 using TOCstart. */
9521 for (s = obfd->sections; s != NULL; s = s->next)
9522 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9523 == (SEC_ALLOC | SEC_SMALL_DATA))
9524 break;
721956f4 9525 if (s == NULL)
805fc799
AM
9526 for (s = obfd->sections; s != NULL; s = s->next)
9527 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9528 == (SEC_ALLOC | SEC_SMALL_DATA))
9529 break;
721956f4 9530 if (s == NULL)
805fc799
AM
9531 for (s = obfd->sections; s != NULL; s = s->next)
9532 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9533 break;
721956f4 9534 if (s == NULL)
805fc799
AM
9535 for (s = obfd->sections; s != NULL; s = s->next)
9536 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9537 break;
9538 }
721956f4 9539
805fc799
AM
9540 TOCstart = 0;
9541 if (s != NULL)
9542 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9543
805fc799 9544 return TOCstart;
721956f4
AM
9545}
9546
9547/* Build all the stubs associated with the current output file.
9548 The stubs are kept in a hash table attached to the main linker
9549 hash table. This function is called via gldelf64ppc_finish. */
9550
b34976b6 9551bfd_boolean
4ce794b7
AM
9552ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9553 struct bfd_link_info *info,
9554 char **stats)
5d1634d7
AM
9555{
9556 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9557 asection *stub_sec;
5d1634d7 9558 bfd_byte *p;
e717da7e 9559 int stub_sec_count = 0;
5d1634d7 9560
ad8e1ba5 9561 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM
9562
9563 /* Allocate memory to hold the linker stubs. */
721956f4
AM
9564 for (stub_sec = htab->stub_bfd->sections;
9565 stub_sec != NULL;
9566 stub_sec = stub_sec->next)
eea6121a
AM
9567 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9568 && stub_sec->size != 0)
e717da7e 9569 {
eea6121a
AM
9570 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9571 if (stub_sec->contents == NULL)
9572 return FALSE;
9573 /* We want to check that built size is the same as calculated
9574 size. rawsize is a convenient location to use. */
9575 stub_sec->rawsize = stub_sec->size;
9576 stub_sec->size = 0;
e717da7e 9577 }
5d1634d7 9578
23eb7e01 9579 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9580 {
9f951329 9581 unsigned int indx;
ad8e1ba5 9582 bfd_vma plt0;
9f951329 9583
721956f4 9584 /* Build the .glink plt call stub. */
97b639ba
AM
9585 if (htab->emit_stub_syms)
9586 {
9587 struct elf_link_hash_entry *h;
9588 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9589 if (h == NULL)
9590 return FALSE;
9591 if (h->root.type == bfd_link_hash_new)
9592 {
9593 h->root.type = bfd_link_hash_defined;
9594 h->root.u.def.section = htab->glink;
ee4bf8d2 9595 h->root.u.def.value = 8;
f5385ebf
AM
9596 h->ref_regular = 1;
9597 h->def_regular = 1;
9598 h->ref_regular_nonweak = 1;
9599 h->forced_local = 1;
9600 h->non_elf = 0;
97b639ba
AM
9601 }
9602 }
4ce794b7 9603 p = htab->glink->contents;
ee4bf8d2
AM
9604 plt0 = (htab->plt->output_section->vma
9605 + htab->plt->output_offset
9606 - (htab->glink->output_section->vma
9607 + htab->glink->output_offset
9608 + 16));
9609 bfd_put_64 (htab->glink->owner, plt0, p);
9610 p += 8;
9611 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9612 p += 4;
ee4bf8d2 9613 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9614 p += 4;
ee4bf8d2 9615 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9616 p += 4;
ee4bf8d2 9617 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9618 p += 4;
ee4bf8d2 9619 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9620 p += 4;
ee4bf8d2 9621 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9622 p += 4;
ee4bf8d2 9623 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9624 p += 4;
4ce794b7 9625 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9626 p += 4;
4ce794b7 9627 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9628 p += 4;
4ce794b7 9629 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9630 p += 4;
4ce794b7 9631 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9632 p += 4;
ee4bf8d2
AM
9633 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9634 {
9635 bfd_put_32 (htab->glink->owner, NOP, p);
9636 p += 4;
9637 }
ad8e1ba5 9638
9f951329
AM
9639 /* Build the .glink lazy link call stubs. */
9640 indx = 0;
eea6121a 9641 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM
9642 {
9643 if (indx < 0x8000)
9644 {
4ce794b7 9645 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM
9646 p += 4;
9647 }
9648 else
9649 {
4ce794b7 9650 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9651 p += 4;
4ce794b7 9652 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM
9653 p += 4;
9654 }
4ce794b7 9655 bfd_put_32 (htab->glink->owner,
ee4bf8d2 9656 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 9657 indx++;
9f951329
AM
9658 p += 4;
9659 }
eea6121a 9660 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9661 }
5d1634d7 9662
eea6121a 9663 if (htab->brlt->size != 0)
721956f4 9664 {
4ce794b7 9665 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9666 htab->brlt->size);
4ce794b7 9667 if (htab->brlt->contents == NULL)
b34976b6 9668 return FALSE;
721956f4 9669 }
ee75fd95 9670 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM
9671 {
9672 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9673 htab->relbrlt->size);
63bc6f6c
AM
9674 if (htab->relbrlt->contents == NULL)
9675 return FALSE;
9676 }
5d1634d7 9677
721956f4
AM
9678 /* Build the stubs as directed by the stub hash table. */
9679 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9680
aa8a7074
AM
9681 if (htab->relbrlt != NULL)
9682 htab->relbrlt->reloc_count = 0;
9683
721956f4
AM
9684 for (stub_sec = htab->stub_bfd->sections;
9685 stub_sec != NULL;
9686 stub_sec = stub_sec->next)
e717da7e
AM
9687 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9688 {
9689 stub_sec_count += 1;
eea6121a 9690 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM
9691 break;
9692 }
5d1634d7 9693
721956f4 9694 if (stub_sec != NULL
eea6121a 9695 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9696 {
b34976b6 9697 htab->stub_error = TRUE;
721956f4 9698 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9699 }
721956f4 9700
d2a300cf
AM
9701 if (htab->stub_error)
9702 return FALSE;
9703
9704 if (stats != NULL)
9705 {
9706 *stats = bfd_malloc (500);
9707 if (*stats == NULL)
9708 return FALSE;
9709
ee75fd95 9710 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM
9711 " branch %lu\n"
9712 " toc adjust %lu\n"
9713 " long branch %lu\n"
9714 " long toc adj %lu\n"
9715 " plt call %lu"),
e717da7e 9716 stub_sec_count,
ee75fd95 9717 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM
9718 htab->stub_count[ppc_stub_long_branch - 1],
9719 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9720 htab->stub_count[ppc_stub_plt_branch - 1],
9721 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9722 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM
9723 }
9724 return TRUE;
5bd4f169
AM
9725}
9726
99877b66
AM
9727/* This function undoes the changes made by add_symbol_adjust. */
9728
9729static bfd_boolean
9730undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9731{
9732 struct ppc_link_hash_entry *eh;
9733
9734 if (h->root.type == bfd_link_hash_indirect)
9735 return TRUE;
9736
9737 if (h->root.type == bfd_link_hash_warning)
9738 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9739
9740 eh = (struct ppc_link_hash_entry *) h;
9741 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9742 return TRUE;
9743
9744 eh->elf.root.type = bfd_link_hash_undefined;
9745 return TRUE;
9746}
9747
9748void
9749ppc64_elf_restore_symbols (struct bfd_link_info *info)
9750{
9751 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9752 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9753}
9754
60124e18
AM
9755/* What to do when ld finds relocations against symbols defined in
9756 discarded sections. */
9757
9758static unsigned int
9759ppc64_elf_action_discarded (asection *sec)
9760{
9761 if (strcmp (".opd", sec->name) == 0)
9762 return 0;
9763
9764 if (strcmp (".toc", sec->name) == 0)
9765 return 0;
9766
bce50a28
JJ
9767 if (strcmp (".toc1", sec->name) == 0)
9768 return 0;
9769
60124e18
AM
9770 return _bfd_elf_default_action_discarded (sec);
9771}
9772
5bd4f169
AM
9773/* The RELOCATE_SECTION function is called by the ELF backend linker
9774 to handle the relocations for a section.
9775
9776 The relocs are always passed as Rela structures; if the section
9777 actually uses Rel structures, the r_addend field will always be
9778 zero.
9779
9780 This function is responsible for adjust the section contents as
9781 necessary, and (if using Rela relocs and generating a
1049f94e 9782 relocatable output file) adjusting the reloc addend as
5bd4f169
AM
9783 necessary.
9784
9785 This function does not have to worry about setting the reloc
9786 address or the reloc symbol index.
9787
9788 LOCAL_SYMS is a pointer to the swapped in local symbols.
9789
9790 LOCAL_SECTIONS is an array giving the section in the input file
9791 corresponding to the st_shndx field of each local symbol.
9792
9793 The global hash table entry for the global symbols can be found
9794 via elf_sym_hashes (input_bfd).
9795
1049f94e 9796 When generating relocatable output, this function must handle
5bd4f169
AM
9797 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9798 going to be the section symbol corresponding to the output
9799 section, which means that the addend must be adjusted
9800 accordingly. */
9801
b34976b6 9802static bfd_boolean
4ce794b7
AM
9803ppc64_elf_relocate_section (bfd *output_bfd,
9804 struct bfd_link_info *info,
9805 bfd *input_bfd,
9806 asection *input_section,
9807 bfd_byte *contents,
9808 Elf_Internal_Rela *relocs,
9809 Elf_Internal_Sym *local_syms,
9810 asection **local_sections)
5bd4f169 9811{
65f38f15 9812 struct ppc_link_hash_table *htab;
5bd4f169
AM
9813 Elf_Internal_Shdr *symtab_hdr;
9814 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
9815 Elf_Internal_Rela *rel;
9816 Elf_Internal_Rela *relend;
411e1bfb
AM
9817 Elf_Internal_Rela outrel;
9818 bfd_byte *loc;
411e1bfb 9819 struct got_entry **local_got_ents;
5bd4f169 9820 bfd_vma TOCstart;
b34976b6
AM
9821 bfd_boolean ret = TRUE;
9822 bfd_boolean is_opd;
96e0dda4 9823 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 9824 bfd_boolean is_power4 = FALSE;
4fe5ca5b 9825 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 9826
65f38f15 9827 /* Initialize howto table if needed. */
5bd4f169 9828 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
9829 ppc_howto_init ();
9830
65f38f15 9831 htab = ppc_hash_table (info);
ee75fd95
AM
9832
9833 /* Don't relocate stub sections. */
9834 if (input_section->owner == htab->stub_bfd)
9835 return TRUE;
9836
411e1bfb 9837 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 9838 TOCstart = elf_gp (output_bfd);
5bd4f169
AM
9839 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
9840 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 9841 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 9842
5bd4f169
AM
9843 rel = relocs;
9844 relend = relocs + input_section->reloc_count;
9845 for (; rel < relend; rel++)
9846 {
04c9666a 9847 enum elf_ppc64_reloc_type r_type;
4cc603a5 9848 bfd_vma addend, orig_addend;
5bd4f169
AM
9849 bfd_reloc_status_type r;
9850 Elf_Internal_Sym *sym;
9851 asection *sec;
039b3fef
AM
9852 struct elf_link_hash_entry *h_elf;
9853 struct ppc_link_hash_entry *h;
9854 struct ppc_link_hash_entry *fdh;
5bd4f169 9855 const char *sym_name;
0d4792f7 9856 unsigned long r_symndx, toc_symndx;
951fd09b 9857 char tls_mask, tls_gd, tls_type;
0d4792f7 9858 char sym_type;
5bd4f169 9859 bfd_vma relocation;
b34976b6
AM
9860 bfd_boolean unresolved_reloc;
9861 bfd_boolean warned;
50bc7936 9862 unsigned long insn, mask;
721956f4
AM
9863 struct ppc_stub_hash_entry *stub_entry;
9864 bfd_vma max_br_offset;
9865 bfd_vma from;
5bd4f169 9866
4ce794b7 9867 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 9868 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM
9869
9870 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9871 symbol of the previous ADDR64 reloc. The symbol gives us the
9872 proper TOC base to use. */
9873 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
9874 && rel != relocs
9875 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
9876 && is_opd)
9877 r_symndx = ELF64_R_SYM (rel[-1].r_info);
9878
4ce794b7
AM
9879 sym = NULL;
9880 sec = NULL;
039b3fef 9881 h_elf = NULL;
4ce794b7 9882 sym_name = NULL;
b34976b6
AM
9883 unresolved_reloc = FALSE;
9884 warned = FALSE;
4cc603a5 9885 orig_addend = rel->r_addend;
65f38f15 9886
0b13192e 9887 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM
9888 {
9889 /* It's a local symbol. */
4025353c
AM
9890 long *opd_adjust;
9891
5bd4f169
AM
9892 sym = local_syms + r_symndx;
9893 sec = local_sections[r_symndx];
26c61ae5 9894 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 9895 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 9896 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4025353c
AM
9897 opd_adjust = get_opd_info (sec);
9898 if (opd_adjust != NULL)
1e2f5b6e 9899 {
3f764659 9900 long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM
9901 if (adjust == -1)
9902 relocation = 0;
9903 else
4cc603a5
AM
9904 {
9905 /* If this is a relocation against the opd section sym
9906 and we have edited .opd, adjust the reloc addend so
9907 that ld -r and ld --emit-relocs output is correct.
9908 If it is a reloc against some other .opd symbol,
9909 then the symbol value will be adjusted later. */
9910 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
9911 rel->r_addend += adjust;
9912 else
9913 relocation += adjust;
9914 }
1e2f5b6e 9915 }
5bd4f169
AM
9916 }
9917 else
9918 {
b2a8e766
AM
9919 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
9920 r_symndx, symtab_hdr, sym_hashes,
039b3fef 9921 h_elf, sec, relocation,
b2a8e766 9922 unresolved_reloc, warned);
039b3fef
AM
9923 sym_name = h_elf->root.root.string;
9924 sym_type = h_elf->type;
5bd4f169 9925 }
039b3fef 9926 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 9927
ab96bf03
AM
9928 if (sec != NULL && elf_discarded_section (sec))
9929 {
9930 /* For relocs against symbols from removed linkonce sections,
9931 or sections discarded by a linker script, we just want the
9932 section contents zeroed. Avoid any special processing. */
9933 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
9934 contents + rel->r_offset);
9935 rel->r_info = 0;
9936 rel->r_addend = 0;
9937 continue;
9938 }
9939
9940 if (info->relocatable)
9941 continue;
9942
951fd09b
AM
9943 /* TLS optimizations. Replace instruction sequences and relocs
9944 based on information we collected in tls_optimize. We edit
9945 RELOCS so that --emit-relocs will output something sensible
9946 for the final instruction stream. */
9947 tls_mask = 0;
9948 tls_gd = 0;
0d4792f7 9949 toc_symndx = 0;
d881513a 9950 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM
9951 {
9952 if (h != NULL)
039b3fef 9953 tls_mask = h->tls_mask;
411e1bfb
AM
9954 else if (local_got_ents != NULL)
9955 {
e7b938ca
AM
9956 char *lgot_masks;
9957 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
9958 tls_mask = lgot_masks[r_symndx];
411e1bfb 9959 }
0d4792f7
AM
9960 if (tls_mask == 0 && r_type == R_PPC64_TLS)
9961 {
9962 /* Check for toc tls entries. */
9963 char *toc_tls;
9964
9965 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
9966 rel, input_bfd))
9967 return FALSE;
9968
9969 if (toc_tls)
9970 tls_mask = *toc_tls;
9971 }
9972 }
9973
9974 /* Check that tls relocs are used with tls syms, and non-tls
9975 relocs are used with non-tls syms. */
9976 if (r_symndx != 0
9977 && r_type != R_PPC64_NONE
9978 && (h == NULL
039b3fef
AM
9979 || h->elf.root.type == bfd_link_hash_defined
9980 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM
9981 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
9982 {
9983 if (r_type == R_PPC64_TLS && tls_mask != 0)
9984 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9985 ;
9986 else
9987 (*_bfd_error_handler)
9988 (sym_type == STT_TLS
d003868e
AM
9989 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9990 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9991 input_bfd,
9992 input_section,
0d4792f7
AM
9993 (long) rel->r_offset,
9994 ppc64_elf_howto_table[r_type]->name,
9995 sym_name);
411e1bfb
AM
9996 }
9997
9998 /* Ensure reloc mapping code below stays sane. */
9999 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10000 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10001 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10002 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10003 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10004 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10005 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10006 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10007 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10008 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10009 abort ();
0d4792f7 10010
411e1bfb
AM
10011 switch (r_type)
10012 {
10013 default:
411e1bfb
AM
10014 break;
10015
10016 case R_PPC64_TOC16:
10017 case R_PPC64_TOC16_LO:
10018 case R_PPC64_TOC16_DS:
10019 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM
10020 {
10021 /* Check for toc tls entries. */
10022 char *toc_tls;
951fd09b 10023 int retval;
411e1bfb 10024
0d4792f7
AM
10025 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10026 rel, input_bfd);
951fd09b 10027 if (retval == 0)
411e1bfb
AM
10028 return FALSE;
10029
10030 if (toc_tls)
10031 {
951fd09b 10032 tls_mask = *toc_tls;
411e1bfb
AM
10033 if (r_type == R_PPC64_TOC16_DS
10034 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM
10035 {
10036 if (tls_mask != 0
10037 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10038 goto toctprel;
10039 }
411e1bfb 10040 else
951fd09b
AM
10041 {
10042 /* If we found a GD reloc pair, then we might be
10043 doing a GD->IE transition. */
10044 if (retval == 2)
10045 {
10046 tls_gd = TLS_TPRELGD;
10047 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10048 goto tls_get_addr_check;
10049 }
10050 else if (retval == 3)
10051 {
10052 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10053 goto tls_get_addr_check;
10054 }
10055 }
411e1bfb
AM
10056 }
10057 }
10058 break;
10059
10060 case R_PPC64_GOT_TPREL16_DS:
10061 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM
10062 if (tls_mask != 0
10063 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10064 {
81407a69 10065 toctprel:
4fe5ca5b 10066 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM
10067 insn &= 31 << 21;
10068 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10069 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10070 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM
10071 if (toc_symndx != 0)
10072 {
10073 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10074 /* We changed the symbol. Start over in order to
10075 get h, sym, sec etc. right. */
10076 rel--;
10077 continue;
10078 }
10079 else
10080 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10081 }
10082 break;
10083
10084 case R_PPC64_TLS:
951fd09b
AM
10085 if (tls_mask != 0
10086 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10087 {
50bc7936 10088 bfd_vma rtra;
411e1bfb 10089 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10090 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM
10091 == ((31 << 26) | (13 << 11)))
10092 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10093 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM
10094 == ((31 << 26) | (13 << 16)))
10095 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10096 else
10097 abort ();
10098 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10099 /* add -> addi. */
10100 insn = 14 << 26;
10101 else if ((insn & (31 << 1)) == 23 << 1
10102 && ((insn & (31 << 6)) < 14 << 6
10103 || ((insn & (31 << 6)) >= 16 << 6
10104 && (insn & (31 << 6)) < 24 << 6)))
10105 /* load and store indexed -> dform. */
10106 insn = (32 | ((insn >> 6) & 31)) << 26;
10107 else if ((insn & (31 << 1)) == 21 << 1
10108 && (insn & (0x1a << 6)) == 0)
10109 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10110 insn = (((58 | ((insn >> 6) & 4)) << 26)
10111 | ((insn >> 6) & 1));
10112 else if ((insn & (31 << 1)) == 21 << 1
10113 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10114 /* lwax -> lwa. */
10115 insn = (58 << 26) | 2;
10116 else
10117 abort ();
10118 insn |= rtra;
10119 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10120 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM
10121 PPC64_TPREL16_LO which is at low-order half-word. */
10122 rel->r_offset += d_offset;
0d4792f7
AM
10123 r_type = R_PPC64_TPREL16_LO;
10124 if (toc_symndx != 0)
10125 {
10126 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10127 /* We changed the symbol. Start over in order to
10128 get h, sym, sec etc. right. */
10129 rel--;
10130 continue;
10131 }
10132 else
10133 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10134 }
10135 break;
10136
411e1bfb
AM
10137 case R_PPC64_GOT_TLSGD16_HI:
10138 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM
10139 tls_gd = TLS_TPRELGD;
10140 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10141 goto tls_gdld_hi;
10142 break;
10143
411e1bfb
AM
10144 case R_PPC64_GOT_TLSLD16_HI:
10145 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10146 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10147 {
951fd09b
AM
10148 tls_gdld_hi:
10149 if ((tls_mask & tls_gd) != 0)
10150 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10151 + R_PPC64_GOT_TPREL16_DS);
10152 else
411e1bfb 10153 {
951fd09b 10154 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10155 rel->r_offset -= d_offset;
951fd09b 10156 r_type = R_PPC64_NONE;
411e1bfb 10157 }
951fd09b 10158 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10159 }
10160 break;
10161
951fd09b
AM
10162 case R_PPC64_GOT_TLSGD16:
10163 case R_PPC64_GOT_TLSGD16_LO:
10164 tls_gd = TLS_TPRELGD;
10165 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10166 goto tls_get_addr_check;
10167 break;
411e1bfb 10168
951fd09b
AM
10169 case R_PPC64_GOT_TLSLD16:
10170 case R_PPC64_GOT_TLSLD16_LO:
10171 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10172 {
10173 tls_get_addr_check:
10174 if (rel + 1 < relend)
411e1bfb 10175 {
951fd09b
AM
10176 enum elf_ppc64_reloc_type r_type2;
10177 unsigned long r_symndx2;
10178 struct elf_link_hash_entry *h2;
10179 bfd_vma insn1, insn2, insn3;
10180 bfd_vma offset;
10181
10182 /* The next instruction should be a call to
10183 __tls_get_addr. Peek at the reloc to be sure. */
4ce794b7 10184 r_type2 = ELF64_R_TYPE (rel[1].r_info);
951fd09b
AM
10185 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
10186 if (r_symndx2 < symtab_hdr->sh_info
10187 || (r_type2 != R_PPC64_REL14
10188 && r_type2 != R_PPC64_REL14_BRTAKEN
10189 && r_type2 != R_PPC64_REL14_BRNTAKEN
10190 && r_type2 != R_PPC64_REL24))
10191 break;
10192
10193 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
10194 while (h2->root.type == bfd_link_hash_indirect
10195 || h2->root.type == bfd_link_hash_warning)
10196 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
8387904d
AM
10197 if (h2 == NULL || (h2 != &htab->tls_get_addr->elf
10198 && h2 != &htab->tls_get_addr_fd->elf))
951fd09b
AM
10199 break;
10200
10201 /* OK, it checks out. Replace the call. */
10202 offset = rel[1].r_offset;
10203 insn1 = bfd_get_32 (output_bfd,
4fe5ca5b 10204 contents + rel->r_offset - d_offset);
951fd09b
AM
10205 insn3 = bfd_get_32 (output_bfd,
10206 contents + offset + 4);
10207 if ((tls_mask & tls_gd) != 0)
411e1bfb 10208 {
951fd09b
AM
10209 /* IE */
10210 insn1 &= (1 << 26) - (1 << 2);
10211 insn1 |= 58 << 26; /* ld */
10212 insn2 = 0x7c636a14; /* add 3,3,13 */
10213 rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE);
10214 if ((tls_mask & TLS_EXPLICIT) == 0)
10215 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10216 + R_PPC64_GOT_TPREL16_DS);
10217 else
10218 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10219 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10220 }
10221 else
951fd09b
AM
10222 {
10223 /* LE */
10224 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10225 insn2 = 0x38630000; /* addi 3,3,0 */
10226 if (tls_gd == 0)
10227 {
10228 /* Was an LD reloc. */
10229 r_symndx = 0;
e1918d23
AM
10230 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10231 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 10232 }
0d4792f7
AM
10233 else if (toc_symndx != 0)
10234 r_symndx = toc_symndx;
951fd09b
AM
10235 r_type = R_PPC64_TPREL16_HA;
10236 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10237 rel[1].r_info = ELF64_R_INFO (r_symndx,
10238 R_PPC64_TPREL16_LO);
4fe5ca5b 10239 rel[1].r_offset += d_offset;
951fd09b
AM
10240 }
10241 if (insn3 == NOP
10242 || insn3 == CROR_151515 || insn3 == CROR_313131)
10243 {
10244 insn3 = insn2;
10245 insn2 = NOP;
10246 rel[1].r_offset += 4;
10247 }
4fe5ca5b 10248 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset);
951fd09b
AM
10249 bfd_put_32 (output_bfd, insn2, contents + offset);
10250 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
0d4792f7 10251 if (tls_gd == 0 || toc_symndx != 0)
951fd09b 10252 {
0d4792f7
AM
10253 /* We changed the symbol. Start over in order
10254 to get h, sym, sec etc. right. */
951fd09b
AM
10255 rel--;
10256 continue;
10257 }
411e1bfb 10258 }
411e1bfb 10259 }
411e1bfb
AM
10260 break;
10261
10262 case R_PPC64_DTPMOD64:
951fd09b
AM
10263 if (rel + 1 < relend
10264 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10265 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10266 {
951fd09b
AM
10267 if ((tls_mask & TLS_GD) == 0)
10268 {
10269 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10270 if ((tls_mask & TLS_TPRELGD) != 0)
10271 r_type = R_PPC64_TPREL64;
10272 else
10273 {
4ce794b7 10274 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM
10275 r_type = R_PPC64_NONE;
10276 }
10277 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10278 }
10279 }
10280 else
10281 {
10282 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10283 {
4ce794b7 10284 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10285 r_type = R_PPC64_NONE;
951fd09b 10286 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10287 }
411e1bfb
AM
10288 }
10289 break;
10290
10291 case R_PPC64_TPREL64:
951fd09b 10292 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM
10293 {
10294 r_type = R_PPC64_NONE;
10295 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10296 }
10297 break;
10298 }
10299
10300 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10301 insn = 0;
b25116a9
AM
10302 max_br_offset = 1 << 25;
10303 addend = rel->r_addend;
65f38f15 10304 switch (r_type)
5bd4f169
AM
10305 {
10306 default:
65f38f15 10307 break;
5bd4f169 10308
65f38f15
AM
10309 /* Branch taken prediction relocations. */
10310 case R_PPC64_ADDR14_BRTAKEN:
10311 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH
10312 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10313 /* Fall thru. */
65f38f15 10314
86c76c7b 10315 /* Branch not taken prediction relocations. */
65f38f15
AM
10316 case R_PPC64_ADDR14_BRNTAKEN:
10317 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM
10318 insn |= bfd_get_32 (output_bfd,
10319 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10320 /* Fall thru. */
86c76c7b 10321
b25116a9
AM
10322 case R_PPC64_REL14:
10323 max_br_offset = 1 << 15;
10324 /* Fall thru. */
5bd4f169 10325
65f38f15 10326 case R_PPC64_REL24:
ad8e1ba5
AM
10327 /* Calls to functions with a different TOC, such as calls to
10328 shared objects, need to alter the TOC pointer. This is
10329 done using a linkage stub. A REL24 branching to these
10330 linkage stubs needs to be followed by a nop, as the nop
10331 will be replaced with an instruction to restore the TOC
10332 base pointer. */
b25116a9 10333 stub_entry = NULL;
8387904d 10334 fdh = h;
ad8e1ba5 10335 if (((h != NULL
039b3fef
AM
10336 && (((fdh = h->oh) != NULL
10337 && fdh->elf.plt.plist != NULL)
10338 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10339 || (sec != NULL
ad8e1ba5 10340 && sec->output_section != NULL
b25116a9 10341 && sec->id <= htab->top_id
ad8e1ba5
AM
10342 && (htab->stub_group[sec->id].toc_off
10343 != htab->stub_group[input_section->id].toc_off)))
721956f4 10344 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM
10345 rel, htab)) != NULL
10346 && (stub_entry->stub_type == ppc_stub_plt_call
10347 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10348 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10349 {
b25116a9 10350 bfd_boolean can_plt_call = FALSE;
721956f4 10351
eea6121a 10352 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10353 {
b25116a9
AM
10354 unsigned long nop;
10355 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10356 if (nop == NOP
10357 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10358 {
4ce794b7 10359 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10360 contents + rel->r_offset + 4);
b25116a9 10361 can_plt_call = TRUE;
41bd81ab 10362 }
5bd4f169 10363 }
721956f4
AM
10364
10365 if (!can_plt_call)
10366 {
ad8e1ba5
AM
10367 if (stub_entry->stub_type == ppc_stub_plt_call)
10368 {
10369 /* If this is a plain branch rather than a branch
4fa1c237
AM
10370 and link, don't require a nop. However, don't
10371 allow tail calls in a shared library as they
10372 will result in r2 being corrupted. */
b25116a9
AM
10373 unsigned long br;
10374 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10375 if (info->executable && (br & 1) == 0)
b25116a9 10376 can_plt_call = TRUE;
15b552e9
AM
10377 else
10378 stub_entry = NULL;
ad8e1ba5 10379 }
6ab189d5 10380 else if (h != NULL
039b3fef 10381 && strcmp (h->elf.root.root.string,
6ab189d5
AM
10382 ".__libc_start_main") == 0)
10383 {
10384 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10385 can_plt_call = TRUE;
6ab189d5 10386 }
ad8e1ba5
AM
10387 else
10388 {
10389 if (strcmp (input_section->output_section->name,
10390 ".init") == 0
10391 || strcmp (input_section->output_section->name,
10392 ".fini") == 0)
10393 (*_bfd_error_handler)
d003868e 10394 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM
10395 "not supported using your crt files; "
10396 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM
10397 input_bfd,
10398 input_section,
ad8e1ba5
AM
10399 (long) rel->r_offset);
10400 else
10401 (*_bfd_error_handler)
d003868e 10402 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM
10403 "does not allow automatic multiple TOCs; "
10404 "recompile with -mminimal-toc or "
10405 "-fno-optimize-sibling-calls, "
10406 "or make `%s' extern"),
d003868e
AM
10407 input_bfd,
10408 input_section,
ad8e1ba5
AM
10409 (long) rel->r_offset,
10410 sym_name,
10411 sym_name);
10412 bfd_set_error (bfd_error_bad_value);
10413 ret = FALSE;
10414 }
721956f4
AM
10415 }
10416
b25116a9
AM
10417 if (can_plt_call
10418 && stub_entry->stub_type == ppc_stub_plt_call)
10419 unresolved_reloc = FALSE;
10420 }
10421
8387904d
AM
10422 if (stub_entry == NULL
10423 && get_opd_info (sec) != NULL)
10424 {
10425 /* The branch destination is the value of the opd entry. */
4cc603a5
AM
10426 bfd_vma off = (relocation + addend
10427 - sec->output_section->vma
10428 - sec->output_offset);
8387904d
AM
10429 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10430 if (dest != (bfd_vma) -1)
10431 {
10432 relocation = dest;
10433 addend = 0;
10434 }
10435 }
10436
b25116a9
AM
10437 /* If the branch is out of reach we ought to have a long
10438 branch stub. */
10439 from = (rel->r_offset
10440 + input_section->output_offset
10441 + input_section->output_section->vma);
10442
10443 if (stub_entry == NULL
4cc603a5 10444 && (relocation + addend - from + max_br_offset
b25116a9
AM
10445 >= 2 * max_br_offset)
10446 && r_type != R_PPC64_ADDR14_BRTAKEN
10447 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM
10448 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10449 htab);
b25116a9
AM
10450
10451 if (stub_entry != NULL)
10452 {
10453 /* Munge up the value and addend so that we call the stub
10454 rather than the procedure directly. */
10455 relocation = (stub_entry->stub_offset
10456 + stub_entry->stub_sec->output_offset
10457 + stub_entry->stub_sec->output_section->vma);
10458 addend = 0;
10459 }
10460
10461 if (insn != 0)
10462 {
10463 if (is_power4)
721956f4 10464 {
b25116a9
AM
10465 /* Set 'a' bit. This is 0b00010 in BO field for branch
10466 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10467 for branch on CTR insns (BO == 1a00t or 1a01t). */
10468 if ((insn & (0x14 << 21)) == (0x04 << 21))
10469 insn |= 0x02 << 21;
10470 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10471 insn |= 0x08 << 21;
10472 else
10473 break;
10474 }
10475 else
10476 {
10477 /* Invert 'y' bit if not the default. */
4cc603a5 10478 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10479 insn ^= 0x01 << 21;
721956f4 10480 }
b25116a9
AM
10481
10482 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10483 }
e86ce104 10484
06da1e8e
AM
10485 /* NOP out calls to undefined weak functions.
10486 We can thus call a weak function without first
10487 checking whether the function is defined. */
b25116a9 10488 else if (h != NULL
039b3fef 10489 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM
10490 && r_type == R_PPC64_REL24
10491 && relocation == 0
4cc603a5 10492 && addend == 0)
e86ce104 10493 {
06da1e8e
AM
10494 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10495 continue;
e86ce104 10496 }
65f38f15
AM
10497 break;
10498 }
5bd4f169 10499
65f38f15 10500 /* Set `addend'. */
411e1bfb 10501 tls_type = 0;
65f38f15
AM
10502 switch (r_type)
10503 {
10504 default:
10505 (*_bfd_error_handler)
d003868e
AM
10506 (_("%B: unknown relocation type %d for symbol %s"),
10507 input_bfd, (int) r_type, sym_name);
5bd4f169 10508
65f38f15 10509 bfd_set_error (bfd_error_bad_value);
b34976b6 10510 ret = FALSE;
65f38f15 10511 continue;
5bd4f169 10512
65f38f15 10513 case R_PPC64_NONE:
411e1bfb 10514 case R_PPC64_TLS:
04c9666a
AM
10515 case R_PPC64_GNU_VTINHERIT:
10516 case R_PPC64_GNU_VTENTRY:
65f38f15 10517 continue;
5bd4f169
AM
10518
10519 /* GOT16 relocations. Like an ADDR16 using the symbol's
10520 address in the GOT as relocation value instead of the
411e1bfb 10521 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10522 symbol and put the symbol value there. */
411e1bfb
AM
10523 case R_PPC64_GOT_TLSGD16:
10524 case R_PPC64_GOT_TLSGD16_LO:
10525 case R_PPC64_GOT_TLSGD16_HI:
10526 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10527 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
10528 goto dogot;
10529
10530 case R_PPC64_GOT_TLSLD16:
10531 case R_PPC64_GOT_TLSLD16_LO:
10532 case R_PPC64_GOT_TLSLD16_HI:
10533 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10534 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
10535 goto dogot;
10536
10537 case R_PPC64_GOT_TPREL16_DS:
10538 case R_PPC64_GOT_TPREL16_LO_DS:
10539 case R_PPC64_GOT_TPREL16_HI:
10540 case R_PPC64_GOT_TPREL16_HA:
10541 tls_type = TLS_TLS | TLS_TPREL;
10542 goto dogot;
10543
10544 case R_PPC64_GOT_DTPREL16_DS:
10545 case R_PPC64_GOT_DTPREL16_LO_DS:
10546 case R_PPC64_GOT_DTPREL16_HI:
10547 case R_PPC64_GOT_DTPREL16_HA:
10548 tls_type = TLS_TLS | TLS_DTPREL;
10549 goto dogot;
10550
65f38f15
AM
10551 case R_PPC64_GOT16:
10552 case R_PPC64_GOT16_LO:
10553 case R_PPC64_GOT16_HI:
10554 case R_PPC64_GOT16_HA:
10555 case R_PPC64_GOT16_DS:
10556 case R_PPC64_GOT16_LO_DS:
411e1bfb 10557 dogot:
5bd4f169
AM
10558 {
10559 /* Relocation is to the entry for this symbol in the global
10560 offset table. */
e717da7e 10561 asection *got;
d881513a 10562 bfd_vma *offp;
5bd4f169 10563 bfd_vma off;
d881513a 10564 unsigned long indx = 0;
65f38f15 10565
d881513a
AM
10566 if (tls_type == (TLS_TLS | TLS_LD)
10567 && (h == NULL
f5385ebf 10568 || !h->elf.def_dynamic))
e717da7e 10569 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10570 else
5bd4f169 10571 {
d881513a 10572 struct got_entry *ent;
5bd4f169 10573
d881513a
AM
10574 if (h != NULL)
10575 {
10576 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM
10577 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10578 &h->elf)
d881513a 10579 || (info->shared
039b3fef 10580 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM
10581 /* This is actually a static link, or it is a
10582 -Bsymbolic link and the symbol is defined
10583 locally, or the symbol was forced to be local
10584 because of a version file. */
10585 ;
10586 else
10587 {
039b3fef 10588 indx = h->elf.dynindx;
d881513a
AM
10589 unresolved_reloc = FALSE;
10590 }
039b3fef 10591 ent = h->elf.got.glist;
d881513a 10592 }
411e1bfb 10593 else
5bd4f169 10594 {
d881513a
AM
10595 if (local_got_ents == NULL)
10596 abort ();
10597 ent = local_got_ents[r_symndx];
5bd4f169 10598 }
d881513a
AM
10599
10600 for (; ent != NULL; ent = ent->next)
4cc603a5 10601 if (ent->addend == orig_addend
e717da7e 10602 && ent->owner == input_bfd
d881513a
AM
10603 && ent->tls_type == tls_type)
10604 break;
10605 if (ent == NULL)
10606 abort ();
10607 offp = &ent->got.offset;
5bd4f169 10608 }
411e1bfb 10609
e717da7e
AM
10610 got = ppc64_elf_tdata (input_bfd)->got;
10611 if (got == NULL)
10612 abort ();
10613
411e1bfb
AM
10614 /* The offset must always be a multiple of 8. We use the
10615 least significant bit to record whether we have already
10616 processed this entry. */
d881513a 10617 off = *offp;
411e1bfb
AM
10618 if ((off & 1) != 0)
10619 off &= ~1;
5bd4f169
AM
10620 else
10621 {
411e1bfb
AM
10622 /* Generate relocs for the dynamic linker, except in
10623 the case of TLSLD where we'll use one entry per
10624 module. */
e717da7e
AM
10625 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10626
d881513a 10627 *offp = off | 1;
4e795f50
AM
10628 if ((info->shared || indx != 0)
10629 && (h == NULL
039b3fef
AM
10630 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10631 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10632 {
e717da7e
AM
10633 outrel.r_offset = (got->output_section->vma
10634 + got->output_offset
411e1bfb 10635 + off);
4cc603a5 10636 outrel.r_addend = addend;
d881513a 10637 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10638 {
411e1bfb 10639 outrel.r_addend = 0;
e515b051 10640 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM
10641 if (tls_type == (TLS_TLS | TLS_GD))
10642 {
e717da7e
AM
10643 loc = relgot->contents;
10644 loc += (relgot->reloc_count++
d881513a
AM
10645 * sizeof (Elf64_External_Rela));
10646 bfd_elf64_swap_reloca_out (output_bfd,
10647 &outrel, loc);
e515b051 10648 outrel.r_offset += 8;
4cc603a5 10649 outrel.r_addend = addend;
d881513a
AM
10650 outrel.r_info
10651 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10652 }
411e1bfb 10653 }
951fd09b 10654 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10655 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10656 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM
10657 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10658 else if (indx == 0)
81407a69
AM
10659 {
10660 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10661
10662 /* Write the .got section contents for the sake
10663 of prelink. */
e717da7e 10664 loc = got->contents + off;
23fbd6fa
JJ
10665 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10666 loc);
81407a69 10667 }
411e1bfb
AM
10668 else
10669 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM
10670
10671 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM
10672 {
10673 outrel.r_addend += relocation;
10674 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10675 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10676 }
e717da7e
AM
10677 loc = relgot->contents;
10678 loc += (relgot->reloc_count++
411e1bfb
AM
10679 * sizeof (Elf64_External_Rela));
10680 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10681 }
10682
ad8e1ba5 10683 /* Init the .got section contents here if we're not
81407a69 10684 emitting a reloc. */
d881513a 10685 else
411e1bfb 10686 {
4cc603a5 10687 relocation += addend;
7b609f53
AM
10688 if (tls_type == (TLS_TLS | TLS_LD))
10689 relocation = 1;
10690 else if (tls_type != 0)
411e1bfb 10691 {
e1918d23 10692 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10693 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10694 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10695
7b609f53
AM
10696 if (tls_type == (TLS_TLS | TLS_GD))
10697 {
10698 bfd_put_64 (output_bfd, relocation,
e717da7e 10699 got->contents + off + 8);
7b609f53
AM
10700 relocation = 1;
10701 }
411e1bfb 10702 }
7b609f53 10703
411e1bfb 10704 bfd_put_64 (output_bfd, relocation,
e717da7e 10705 got->contents + off);
5bd4f169
AM
10706 }
10707 }
10708
65f38f15
AM
10709 if (off >= (bfd_vma) -2)
10710 abort ();
10711
e717da7e 10712 relocation = got->output_offset + off;
65f38f15 10713
5bd4f169 10714 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10715 addend = -TOC_BASE_OFF;
5bd4f169 10716 }
65f38f15
AM
10717 break;
10718
10719 case R_PPC64_PLT16_HA:
10720 case R_PPC64_PLT16_HI:
10721 case R_PPC64_PLT16_LO:
10722 case R_PPC64_PLT32:
10723 case R_PPC64_PLT64:
10724 /* Relocation is to the entry for this symbol in the
10725 procedure linkage table. */
10726
10727 /* Resolve a PLT reloc against a local symbol directly,
10728 without using the procedure linkage table. */
10729 if (h == NULL)
10730 break;
10731
411e1bfb
AM
10732 /* It's possible that we didn't make a PLT entry for this
10733 symbol. This happens when statically linking PIC code,
10734 or when using -Bsymbolic. Go find a match if there is a
10735 PLT entry. */
4ce794b7 10736 if (htab->plt != NULL)
65f38f15 10737 {
411e1bfb 10738 struct plt_entry *ent;
039b3fef 10739 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 10740 if (ent->addend == orig_addend
411e1bfb
AM
10741 && ent->plt.offset != (bfd_vma) -1)
10742 {
4ce794b7
AM
10743 relocation = (htab->plt->output_section->vma
10744 + htab->plt->output_offset
411e1bfb
AM
10745 + ent->plt.offset);
10746 unresolved_reloc = FALSE;
10747 }
65f38f15 10748 }
65f38f15 10749 break;
5bd4f169 10750
0b13192e
AM
10751 case R_PPC64_TOC:
10752 /* Relocation value is TOC base. */
10753 relocation = TOCstart;
10754 if (r_symndx == 0)
10755 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM
10756 else if (unresolved_reloc)
10757 ;
10758 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM
10759 relocation += htab->stub_group[sec->id].toc_off;
10760 else
10761 unresolved_reloc = TRUE;
ab96bf03 10762 goto dodyn;
0b13192e 10763
5bd4f169
AM
10764 /* TOC16 relocs. We want the offset relative to the TOC base,
10765 which is the address of the start of the TOC plus 0x8000.
10766 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10767 in this order. */
65f38f15
AM
10768 case R_PPC64_TOC16:
10769 case R_PPC64_TOC16_LO:
10770 case R_PPC64_TOC16_HI:
10771 case R_PPC64_TOC16_DS:
10772 case R_PPC64_TOC16_LO_DS:
10773 case R_PPC64_TOC16_HA:
ad8e1ba5 10774 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM
10775 break;
10776
10777 /* Relocate against the beginning of the section. */
65f38f15
AM
10778 case R_PPC64_SECTOFF:
10779 case R_PPC64_SECTOFF_LO:
10780 case R_PPC64_SECTOFF_HI:
10781 case R_PPC64_SECTOFF_DS:
10782 case R_PPC64_SECTOFF_LO_DS:
10783 case R_PPC64_SECTOFF_HA:
4ce794b7 10784 if (sec != NULL)
65f38f15 10785 addend -= sec->output_section->vma;
5bd4f169
AM
10786 break;
10787
721956f4
AM
10788 case R_PPC64_REL14:
10789 case R_PPC64_REL14_BRNTAKEN:
10790 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM
10791 case R_PPC64_REL24:
10792 break;
10793
411e1bfb
AM
10794 case R_PPC64_TPREL16:
10795 case R_PPC64_TPREL16_LO:
10796 case R_PPC64_TPREL16_HI:
10797 case R_PPC64_TPREL16_HA:
10798 case R_PPC64_TPREL16_DS:
10799 case R_PPC64_TPREL16_LO_DS:
10800 case R_PPC64_TPREL16_HIGHER:
10801 case R_PPC64_TPREL16_HIGHERA:
10802 case R_PPC64_TPREL16_HIGHEST:
10803 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10804 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
10805 if (info->shared)
10806 /* The TPREL16 relocs shouldn't really be used in shared
10807 libs as they will result in DT_TEXTREL being set, but
10808 support them anyway. */
10809 goto dodyn;
10810 break;
10811
10812 case R_PPC64_DTPREL16:
10813 case R_PPC64_DTPREL16_LO:
10814 case R_PPC64_DTPREL16_HI:
10815 case R_PPC64_DTPREL16_HA:
10816 case R_PPC64_DTPREL16_DS:
10817 case R_PPC64_DTPREL16_LO_DS:
10818 case R_PPC64_DTPREL16_HIGHER:
10819 case R_PPC64_DTPREL16_HIGHERA:
10820 case R_PPC64_DTPREL16_HIGHEST:
10821 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 10822 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
10823 break;
10824
e515b051
AM
10825 case R_PPC64_DTPMOD64:
10826 relocation = 1;
10827 addend = 0;
10828 goto dodyn;
10829
411e1bfb 10830 case R_PPC64_TPREL64:
e1918d23 10831 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
10832 goto dodyn;
10833
10834 case R_PPC64_DTPREL64:
e1918d23 10835 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
10836 /* Fall thru */
10837
65f38f15
AM
10838 /* Relocations that may need to be propagated if this is a
10839 dynamic object. */
04c9666a 10840 case R_PPC64_REL30:
65f38f15
AM
10841 case R_PPC64_REL32:
10842 case R_PPC64_REL64:
10843 case R_PPC64_ADDR14:
10844 case R_PPC64_ADDR14_BRNTAKEN:
10845 case R_PPC64_ADDR14_BRTAKEN:
10846 case R_PPC64_ADDR16:
10847 case R_PPC64_ADDR16_DS:
10848 case R_PPC64_ADDR16_HA:
10849 case R_PPC64_ADDR16_HI:
10850 case R_PPC64_ADDR16_HIGHER:
10851 case R_PPC64_ADDR16_HIGHERA:
10852 case R_PPC64_ADDR16_HIGHEST:
10853 case R_PPC64_ADDR16_HIGHESTA:
10854 case R_PPC64_ADDR16_LO:
10855 case R_PPC64_ADDR16_LO_DS:
10856 case R_PPC64_ADDR24:
65f38f15
AM
10857 case R_PPC64_ADDR32:
10858 case R_PPC64_ADDR64:
10859 case R_PPC64_UADDR16:
10860 case R_PPC64_UADDR32:
10861 case R_PPC64_UADDR64:
411e1bfb 10862 dodyn:
5d1634d7 10863 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
10864 break;
10865
41bd81ab
AM
10866 if (NO_OPD_RELOCS && is_opd)
10867 break;
10868
65f38f15 10869 if ((info->shared
4e795f50 10870 && (h == NULL
039b3fef
AM
10871 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10872 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 10873 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 10874 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM
10875 || (ELIMINATE_COPY_RELOCS
10876 && !info->shared
65f38f15 10877 && h != NULL
039b3fef 10878 && h->elf.dynindx != -1
f5385ebf
AM
10879 && !h->elf.non_got_ref
10880 && h->elf.def_dynamic
10881 && !h->elf.def_regular))
65f38f15
AM
10882 {
10883 Elf_Internal_Rela outrel;
b34976b6 10884 bfd_boolean skip, relocate;
65f38f15 10885 asection *sreloc;
947216bf 10886 bfd_byte *loc;
1cf1f670 10887 bfd_vma out_off;
65f38f15
AM
10888
10889 /* When generating a dynamic object, these relocations
10890 are copied into the output file to be resolved at run
10891 time. */
10892
b34976b6
AM
10893 skip = FALSE;
10894 relocate = FALSE;
65f38f15 10895
1cf1f670
AM
10896 out_off = _bfd_elf_section_offset (output_bfd, info,
10897 input_section, rel->r_offset);
10898 if (out_off == (bfd_vma) -1)
b34976b6 10899 skip = TRUE;
1cf1f670 10900 else if (out_off == (bfd_vma) -2)
b34976b6 10901 skip = TRUE, relocate = TRUE;
1cf1f670
AM
10902 out_off += (input_section->output_section->vma
10903 + input_section->output_offset);
10904 outrel.r_offset = out_off;
411e1bfb 10905 outrel.r_addend = rel->r_addend;
65f38f15 10906
1cf1f670
AM
10907 /* Optimize unaligned reloc use. */
10908 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
10909 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
10910 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
10911 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
10912 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
10913 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
10914 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
10915 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
10916 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
10917
65f38f15 10918 if (skip)
0bb2d96a 10919 memset (&outrel, 0, sizeof outrel);
039b3fef 10920 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM
10921 && !is_opd
10922 && r_type != R_PPC64_TOC)
039b3fef 10923 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM
10924 else
10925 {
41bd81ab
AM
10926 /* This symbol is local, or marked to become local,
10927 or this is an opd section reloc which must point
10928 at a local function. */
65f38f15 10929 outrel.r_addend += relocation;
e86ce104 10930 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 10931 {
3fad3c7c 10932 if (is_opd && h != NULL)
afbe61cf
AM
10933 {
10934 /* Lie about opd entries. This case occurs
10935 when building shared libraries and we
10936 reference a function in another shared
3fad3c7c
AM
10937 lib. The same thing happens for a weak
10938 definition in an application that's
10939 overridden by a strong definition in a
10940 shared lib. (I believe this is a generic
10941 bug in binutils handling of weak syms.)
10942 In these cases we won't use the opd
1e2f5b6e 10943 entry in this lib. */
b34976b6 10944 unresolved_reloc = FALSE;
afbe61cf 10945 }
65f38f15 10946 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM
10947
10948 /* We need to relocate .opd contents for ld.so.
10949 Prelink also wants simple and consistent rules
10950 for relocs. This make all RELATIVE relocs have
10951 *r_offset equal to r_addend. */
10952 relocate = TRUE;
65f38f15
AM
10953 }
10954 else
10955 {
10956 long indx = 0;
10957
41bd81ab 10958 if (bfd_is_abs_section (sec))
65f38f15
AM
10959 ;
10960 else if (sec == NULL || sec->owner == NULL)
10961 {
10962 bfd_set_error (bfd_error_bad_value);
b34976b6 10963 return FALSE;
65f38f15
AM
10964 }
10965 else
10966 {
10967 asection *osec;
10968
10969 osec = sec->output_section;
10970 indx = elf_section_data (osec)->dynindx;
10971
74541ad4
AM
10972 if (indx == 0)
10973 {
10974 if ((osec->flags & SEC_READONLY) == 0
10975 && htab->elf.data_index_section != NULL)
10976 osec = htab->elf.data_index_section;
10977 else
10978 osec = htab->elf.text_index_section;
10979 indx = elf_section_data (osec)->dynindx;
10980 }
10981 BFD_ASSERT (indx != 0);
10982
65f38f15
AM
10983 /* We are turning this relocation into one
10984 against a section symbol, so subtract out
10985 the output section's address but not the
10986 offset of the input section in the output
10987 section. */
10988 outrel.r_addend -= osec->vma;
10989 }
10990
10991 outrel.r_info = ELF64_R_INFO (indx, r_type);
10992 }
10993 }
10994
10995 sreloc = elf_section_data (input_section)->sreloc;
10996 if (sreloc == NULL)
10997 abort ();
10998
dfbb6ac9
AM
10999 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11000 >= sreloc->size)
11001 abort ();
947216bf
AM
11002 loc = sreloc->contents;
11003 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM
11004 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11005
11006 /* If this reloc is against an external symbol, it will
11007 be computed at runtime, so there's no need to do
81407a69
AM
11008 anything now. However, for the sake of prelink ensure
11009 that the section contents are a known value. */
65f38f15 11010 if (! relocate)
81407a69
AM
11011 {
11012 unresolved_reloc = FALSE;
11013 /* The value chosen here is quite arbitrary as ld.so
11014 ignores section contents except for the special
11015 case of .opd where the contents might be accessed
11016 before relocation. Choose zero, as that won't
11017 cause reloc overflow. */
11018 relocation = 0;
11019 addend = 0;
11020 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11021 to improve backward compatibility with older
11022 versions of ld. */
11023 if (r_type == R_PPC64_ADDR64)
11024 addend = outrel.r_addend;
11025 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11026 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM
11027 addend = (input_section->output_section->vma
11028 + input_section->output_offset
11029 + rel->r_offset);
81407a69 11030 }
65f38f15 11031 }
5bd4f169
AM
11032 break;
11033
65f38f15
AM
11034 case R_PPC64_COPY:
11035 case R_PPC64_GLOB_DAT:
11036 case R_PPC64_JMP_SLOT:
11037 case R_PPC64_RELATIVE:
11038 /* We shouldn't ever see these dynamic relocs in relocatable
11039 files. */
ae9a127f 11040 /* Fall through. */
65f38f15
AM
11041
11042 case R_PPC64_PLTGOT16:
11043 case R_PPC64_PLTGOT16_DS:
11044 case R_PPC64_PLTGOT16_HA:
11045 case R_PPC64_PLTGOT16_HI:
11046 case R_PPC64_PLTGOT16_LO:
11047 case R_PPC64_PLTGOT16_LO_DS:
11048 case R_PPC64_PLTREL32:
11049 case R_PPC64_PLTREL64:
11050 /* These ones haven't been implemented yet. */
11051
11052 (*_bfd_error_handler)
d003868e
AM
11053 (_("%B: relocation %s is not supported for symbol %s."),
11054 input_bfd,
4ce794b7 11055 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM
11056
11057 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11058 ret = FALSE;
5bd4f169 11059 continue;
65f38f15 11060 }
5bd4f169 11061
65f38f15
AM
11062 /* Do any further special processing. */
11063 switch (r_type)
11064 {
11065 default:
11066 break;
11067
11068 case R_PPC64_ADDR16_HA:
11069 case R_PPC64_ADDR16_HIGHERA:
11070 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM
11071 case R_PPC64_TOC16_HA:
11072 case R_PPC64_SECTOFF_HA:
411e1bfb
AM
11073 case R_PPC64_TPREL16_HA:
11074 case R_PPC64_DTPREL16_HA:
411e1bfb
AM
11075 case R_PPC64_TPREL16_HIGHER:
11076 case R_PPC64_TPREL16_HIGHERA:
11077 case R_PPC64_TPREL16_HIGHEST:
11078 case R_PPC64_TPREL16_HIGHESTA:
11079 case R_PPC64_DTPREL16_HIGHER:
11080 case R_PPC64_DTPREL16_HIGHERA:
11081 case R_PPC64_DTPREL16_HIGHEST:
11082 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM
11083 /* It's just possible that this symbol is a weak symbol
11084 that's not actually defined anywhere. In that case,
11085 'sec' would be NULL, and we should leave the symbol
11086 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
11087 if (sec == NULL)
11088 break;
11089 /* Fall thru */
11090
11091 case R_PPC64_GOT16_HA:
11092 case R_PPC64_PLTGOT16_HA:
11093 case R_PPC64_PLT16_HA:
11094 case R_PPC64_GOT_TLSGD16_HA:
11095 case R_PPC64_GOT_TLSLD16_HA:
11096 case R_PPC64_GOT_TPREL16_HA:
11097 case R_PPC64_GOT_DTPREL16_HA:
11098 /* Add 0x10000 if sign bit in 0:15 is set.
11099 Bits 0:15 are not used. */
11100 addend += 0x8000;
65f38f15
AM
11101 break;
11102
11103 case R_PPC64_ADDR16_DS:
11104 case R_PPC64_ADDR16_LO_DS:
11105 case R_PPC64_GOT16_DS:
11106 case R_PPC64_GOT16_LO_DS:
11107 case R_PPC64_PLT16_LO_DS:
11108 case R_PPC64_SECTOFF_DS:
11109 case R_PPC64_SECTOFF_LO_DS:
11110 case R_PPC64_TOC16_DS:
11111 case R_PPC64_TOC16_LO_DS:
11112 case R_PPC64_PLTGOT16_DS:
11113 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM
11114 case R_PPC64_GOT_TPREL16_DS:
11115 case R_PPC64_GOT_TPREL16_LO_DS:
11116 case R_PPC64_GOT_DTPREL16_DS:
11117 case R_PPC64_GOT_DTPREL16_LO_DS:
11118 case R_PPC64_TPREL16_DS:
11119 case R_PPC64_TPREL16_LO_DS:
11120 case R_PPC64_DTPREL16_DS:
11121 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM
11122 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11123 mask = 3;
11124 /* If this reloc is against an lq insn, then the value must be
11125 a multiple of 16. This is somewhat of a hack, but the
11126 "correct" way to do this by defining _DQ forms of all the
11127 _DS relocs bloats all reloc switches in this file. It
11128 doesn't seem to make much sense to use any of these relocs
11129 in data, so testing the insn should be safe. */
494dac0c 11130 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM
11131 mask = 15;
11132 if (((relocation + addend) & mask) != 0)
65f38f15
AM
11133 {
11134 (*_bfd_error_handler)
d003868e
AM
11135 (_("%B: error: relocation %s not a multiple of %d"),
11136 input_bfd,
4ce794b7 11137 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11138 mask + 1);
65f38f15 11139 bfd_set_error (bfd_error_bad_value);
b34976b6 11140 ret = FALSE;
65f38f15
AM
11141 continue;
11142 }
11143 break;
5bd4f169
AM
11144 }
11145
239e1f3a
AM
11146 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11147 because such sections are not SEC_ALLOC and thus ld.so will
11148 not process them. */
65f38f15 11149 if (unresolved_reloc
239e1f3a 11150 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11151 && h->elf.def_dynamic))
9c07fe7c
AM
11152 {
11153 (*_bfd_error_handler)
d003868e
AM
11154 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11155 input_bfd,
11156 input_section,
9c07fe7c 11157 (long) rel->r_offset,
7b609f53 11158 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11159 h->elf.root.root.string);
b34976b6 11160 ret = FALSE;
9c07fe7c 11161 }
5bd4f169 11162
65f38f15 11163 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM
11164 input_bfd,
11165 input_section,
11166 contents,
411e1bfb 11167 rel->r_offset,
5bd4f169
AM
11168 relocation,
11169 addend);
11170
ef60b7ff 11171 if (r != bfd_reloc_ok)
5bd4f169 11172 {
cd27b276
AM
11173 if (sym_name == NULL)
11174 sym_name = "(null)";
11175 if (r == bfd_reloc_overflow)
5bd4f169 11176 {
cd27b276
AM
11177 if (warned)
11178 continue;
11179 if (h != NULL
039b3fef 11180 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11181 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM
11182 {
11183 /* Assume this is a call protected by other code that
11184 detects the symbol is undefined. If this is the case,
11185 we can safely ignore the overflow. If not, the
11186 program is hosed anyway, and a little warning isn't
11187 going to help. */
11188
11189 continue;
11190 }
11191
ef60b7ff 11192 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
11193 (info, (h ? &h->elf.root : NULL), sym_name,
11194 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11195 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11196 return FALSE;
ef60b7ff
AM
11197 }
11198 else
11199 {
11200 (*_bfd_error_handler)
d003868e
AM
11201 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11202 input_bfd,
11203 input_section,
7b609f53 11204 (long) rel->r_offset,
4ce794b7 11205 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM
11206 sym_name,
11207 (int) r);
b34976b6 11208 ret = FALSE;
ef60b7ff 11209 }
5bd4f169 11210 }
5bd4f169
AM
11211 }
11212
645ea6a9
AM
11213 /* If we're emitting relocations, then shortly after this function
11214 returns, reloc offsets and addends for this section will be
11215 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM
11216 file rather than the input. Save a copy of the relocs for
11217 opd_entry_value. */
4cc603a5 11218 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM
11219 {
11220 bfd_size_type amt;
11221 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11222 rel = bfd_alloc (input_bfd, amt);
11223 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11224 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11225 if (rel == NULL)
11226 return FALSE;
11227 memcpy (rel, relocs, amt);
11228 }
5bd4f169
AM
11229 return ret;
11230}
11231
754021d0
AM
11232/* Adjust the value of any local symbols in opd sections. */
11233
11234static bfd_boolean
11235ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11236 const char *name ATTRIBUTE_UNUSED,
11237 Elf_Internal_Sym *elfsym,
11238 asection *input_sec,
11239 struct elf_link_hash_entry *h)
11240{
4025353c 11241 long *opd_adjust, adjust;
754021d0
AM
11242 bfd_vma value;
11243
4025353c
AM
11244 if (h != NULL)
11245 return TRUE;
11246
11247 opd_adjust = get_opd_info (input_sec);
11248 if (opd_adjust == NULL)
754021d0
AM
11249 return TRUE;
11250
11251 value = elfsym->st_value - input_sec->output_offset;
11252 if (!info->relocatable)
11253 value -= input_sec->output_section->vma;
11254
3f764659 11255 adjust = opd_adjust[value / 8];
4025353c
AM
11256 if (adjust == -1)
11257 elfsym->st_value = 0;
11258 else
11259 elfsym->st_value += adjust;
754021d0
AM
11260 return TRUE;
11261}
11262
5bd4f169
AM
11263/* Finish up dynamic symbol handling. We set the contents of various
11264 dynamic sections here. */
11265
b34976b6 11266static bfd_boolean
4ce794b7
AM
11267ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11268 struct bfd_link_info *info,
11269 struct elf_link_hash_entry *h,
11270 Elf_Internal_Sym *sym)
5bd4f169 11271{
65f38f15 11272 struct ppc_link_hash_table *htab;
8387904d
AM
11273 struct plt_entry *ent;
11274 Elf_Internal_Rela rela;
11275 bfd_byte *loc;
5bd4f169 11276
65f38f15 11277 htab = ppc_hash_table (info);
5bd4f169 11278
8387904d
AM
11279 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11280 if (ent->plt.offset != (bfd_vma) -1)
11281 {
11282 /* This symbol has an entry in the procedure linkage
11283 table. Set it up. */
11284
11285 if (htab->plt == NULL
11286 || htab->relplt == NULL
11287 || htab->glink == NULL)
11288 abort ();
11289
11290 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11291 fill in the PLT entry. */
11292 rela.r_offset = (htab->plt->output_section->vma
11293 + htab->plt->output_offset
11294 + ent->plt.offset);
11295 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11296 rela.r_addend = ent->addend;
11297
11298 loc = htab->relplt->contents;
11299 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11300 * sizeof (Elf64_External_Rela));
11301 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11302 }
5bd4f169 11303
f5385ebf 11304 if (h->needs_copy)
5bd4f169 11305 {
5bd4f169 11306 Elf_Internal_Rela rela;
947216bf 11307 bfd_byte *loc;
5bd4f169 11308
65f38f15 11309 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11310
65f38f15
AM
11311 if (h->dynindx == -1
11312 || (h->root.type != bfd_link_hash_defined
11313 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11314 || htab->relbss == NULL)
65f38f15 11315 abort ();
5bd4f169
AM
11316
11317 rela.r_offset = (h->root.u.def.value
11318 + h->root.u.def.section->output_section->vma
11319 + h->root.u.def.section->output_offset);
11320 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11321 rela.r_addend = 0;
4ce794b7
AM
11322 loc = htab->relbss->contents;
11323 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11324 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM
11325 }
11326
5bd4f169
AM
11327 /* Mark some specially defined symbols as absolute. */
11328 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11329 sym->st_shndx = SHN_ABS;
11330
b34976b6 11331 return TRUE;
5bd4f169
AM
11332}
11333
65f38f15
AM
11334/* Used to decide how to sort relocs in an optimal manner for the
11335 dynamic linker, before writing them out. */
11336
11337static enum elf_reloc_type_class
4ce794b7 11338ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11339{
04c9666a 11340 enum elf_ppc64_reloc_type r_type;
a33d1f77 11341
4ce794b7 11342 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11343 switch (r_type)
65f38f15
AM
11344 {
11345 case R_PPC64_RELATIVE:
11346 return reloc_class_relative;
11347 case R_PPC64_JMP_SLOT:
11348 return reloc_class_plt;
11349 case R_PPC64_COPY:
11350 return reloc_class_copy;
11351 default:
11352 return reloc_class_normal;
11353 }
11354}
11355
5bd4f169
AM
11356/* Finish up the dynamic sections. */
11357
b34976b6 11358static bfd_boolean
4ce794b7
AM
11359ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11360 struct bfd_link_info *info)
5bd4f169 11361{
65f38f15
AM
11362 struct ppc_link_hash_table *htab;
11363 bfd *dynobj;
5bd4f169 11364 asection *sdyn;
5bd4f169 11365
65f38f15
AM
11366 htab = ppc_hash_table (info);
11367 dynobj = htab->elf.dynobj;
5bd4f169
AM
11368 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11369
65f38f15 11370 if (htab->elf.dynamic_sections_created)
5bd4f169 11371 {
5bd4f169
AM
11372 Elf64_External_Dyn *dyncon, *dynconend;
11373
4ce794b7 11374 if (sdyn == NULL || htab->got == NULL)
65f38f15 11375 abort ();
5bd4f169
AM
11376
11377 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11378 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM
11379 for (; dyncon < dynconend; dyncon++)
11380 {
11381 Elf_Internal_Dyn dyn;
19397422 11382 asection *s;
5bd4f169
AM
11383
11384 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11385
11386 switch (dyn.d_tag)
11387 {
65f38f15
AM
11388 default:
11389 continue;
5bd4f169 11390
5d1634d7 11391 case DT_PPC64_GLINK:
4ce794b7 11392 s = htab->glink;
6348e046 11393 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM
11394 /* We stupidly defined DT_PPC64_GLINK to be the start
11395 of glink rather than the first entry point, which is
11396 what ld.so needs, and now have a bigger stub to
11397 support automatic multiple TOCs. */
11398 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM
11399 break;
11400
19397422
AM
11401 case DT_PPC64_OPD:
11402 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
11403 if (s == NULL)
11404 continue;
11405 dyn.d_un.d_ptr = s->vma;
19397422
AM
11406 break;
11407
11408 case DT_PPC64_OPDSZ:
11409 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
11410 if (s == NULL)
11411 continue;
eea6121a 11412 dyn.d_un.d_val = s->size;
19397422
AM
11413 break;
11414
65f38f15 11415 case DT_PLTGOT:
4ce794b7 11416 s = htab->plt;
6348e046 11417 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM
11418 break;
11419
11420 case DT_JMPREL:
4ce794b7 11421 s = htab->relplt;
6348e046 11422 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11423 break;
5bd4f169 11424
65f38f15 11425 case DT_PLTRELSZ:
eea6121a 11426 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM
11427 break;
11428
11429 case DT_RELASZ:
11430 /* Don't count procedure linkage table relocs in the
11431 overall reloc count. */
4ce794b7 11432 s = htab->relplt;
6348e046
AM
11433 if (s == NULL)
11434 continue;
eea6121a 11435 dyn.d_un.d_val -= s->size;
6348e046
AM
11436 break;
11437
11438 case DT_RELA:
11439 /* We may not be using the standard ELF linker script.
11440 If .rela.plt is the first .rela section, we adjust
11441 DT_RELA to not include it. */
4ce794b7 11442 s = htab->relplt;
6348e046
AM
11443 if (s == NULL)
11444 continue;
11445 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11446 continue;
eea6121a 11447 dyn.d_un.d_ptr += s->size;
65f38f15 11448 break;
5bd4f169 11449 }
5bd4f169 11450
65f38f15 11451 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11452 }
5bd4f169
AM
11453 }
11454
eea6121a 11455 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM
11456 {
11457 /* Fill in the first entry in the global offset table.
11458 We use it to hold the link-time TOCbase. */
11459 bfd_put_64 (output_bfd,
60ee0d4a 11460 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11461 htab->got->contents);
5d1634d7
AM
11462
11463 /* Set .got entry size. */
4ce794b7 11464 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM
11465 }
11466
eea6121a 11467 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM
11468 {
11469 /* Set .plt entry size. */
4ce794b7 11470 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM
11471 = PLT_ENTRY_SIZE;
11472 }
11473
84f5d08e
AM
11474 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11475 brlt ourselves if emitrelocations. */
11476 if (htab->brlt != NULL
11477 && htab->brlt->reloc_count != 0
11478 && !_bfd_elf_link_output_relocs (output_bfd,
11479 htab->brlt,
11480 &elf_section_data (htab->brlt)->rel_hdr,
11481 elf_section_data (htab->brlt)->relocs,
11482 NULL))
11483 return FALSE;
11484
e717da7e 11485 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM
11486 since we didn't add them to DYNOBJ. We know dynobj is the first
11487 bfd. */
e717da7e
AM
11488 while ((dynobj = dynobj->link_next) != NULL)
11489 {
11490 asection *s;
7b53ace3 11491
ee75fd95 11492 if (!is_ppc64_elf_target (dynobj->xvec))
7b53ace3
AM
11493 continue;
11494
e717da7e
AM
11495 s = ppc64_elf_tdata (dynobj)->got;
11496 if (s != NULL
eea6121a 11497 && s->size != 0
e717da7e
AM
11498 && s->output_section != bfd_abs_section_ptr
11499 && !bfd_set_section_contents (output_bfd, s->output_section,
11500 s->contents, s->output_offset,
eea6121a 11501 s->size))
e717da7e
AM
11502 return FALSE;
11503 s = ppc64_elf_tdata (dynobj)->relgot;
11504 if (s != NULL
eea6121a 11505 && s->size != 0
e717da7e
AM
11506 && s->output_section != bfd_abs_section_ptr
11507 && !bfd_set_section_contents (output_bfd, s->output_section,
11508 s->contents, s->output_offset,
eea6121a 11509 s->size))
e717da7e
AM
11510 return FALSE;
11511 }
f6c52c13 11512
b34976b6 11513 return TRUE;
5bd4f169
AM
11514}
11515
5bd4f169 11516#include "elf64-target.h"