* elf.c (bfd_elf_get_str_section): Fix memory leak caused by
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
74f0fb50 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
b2a8e766 3 Free Software Foundation, Inc.
5bd4f169
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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
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 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
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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
cd123cb7 24
4ce794b7
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25/* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
5bd4f169 31#include "bfd.h"
5bd4f169
AM
32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
04c9666a 35#include "elf/ppc64.h"
5d1634d7 36#include "elf64-ppc.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
56static bfd_vma opd_entry_value
57 (asection *, bfd_vma, asection **, bfd_vma *);
5bd4f169 58
ad8e1ba5
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59#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60#define TARGET_LITTLE_NAME "elf64-powerpcle"
61#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
64#define ELF_MACHINE_CODE EM_PPC64
65#define ELF_MAXPAGESIZE 0x10000
24718e3b 66#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
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67#define elf_info_to_howto ppc64_elf_info_to_howto
68
69#define elf_backend_want_got_sym 0
70#define elf_backend_want_plt_sym 0
71#define elf_backend_plt_alignment 3
72#define elf_backend_plt_not_loaded 1
ad8e1ba5 73#define elf_backend_got_header_size 8
ad8e1ba5
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74#define elf_backend_can_gc_sections 1
75#define elf_backend_can_refcount 1
76#define elf_backend_rela_normal 1
6bfdb61b 77#define elf_backend_default_execstack 0
ad8e1ba5 78
e717da7e 79#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 80#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
157090f7 81#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ad8e1ba5
AM
82#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
83#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
84#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
85#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 86#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
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87
88#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM
89#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
90#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 91#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM
92#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
93#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 94#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
8387904d 95#define elf_backend_check_directives ppc64_elf_check_directives
97fed1c9 96#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 97#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 98#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 99#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 100#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
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101#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
102#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
103#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
104#define elf_backend_hide_symbol ppc64_elf_hide_symbol
105#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
106#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
74541ad4 107#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 108#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
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109#define elf_backend_relocate_section ppc64_elf_relocate_section
110#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
111#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
112#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 113#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 114#define elf_backend_special_sections ppc64_elf_special_sections
ad8e1ba5 115
5bd4f169
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116/* The name of the dynamic interpreter. This is put in the .interp
117 section. */
118#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
119
120/* The size in bytes of an entry in the procedure linkage table. */
121#define PLT_ENTRY_SIZE 24
122
123/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 124#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
5bd4f169
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125
126/* TOC base pointers offset from start of TOC. */
411e1bfb
AM
127#define TOC_BASE_OFF 0x8000
128
129/* Offset of tp and dtp pointers from start of TLS block. */
130#define TP_OFFSET 0x7000
131#define DTP_OFFSET 0x8000
5bd4f169 132
ad8e1ba5
AM
133/* .plt call stub instructions. The normal stub is like this, but
134 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 135 insert an addi to adjust r12. */
ad8e1ba5 136#define PLT_CALL_STUB_SIZE (7*4)
5d1634d7
AM
137#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
138#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
139#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 140#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 141#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
AM
142 /* ld %r11,xxx+16@l(%r12) */
143#define BCTR 0x4e800420 /* bctr */
144
5d1634d7 145
ee4bf8d2 146#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 147#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
ad8e1ba5
AM
148#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
149#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
150
ac2df442
AM
151#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
152#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
153
ad8e1ba5
AM
154#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
155
ee4bf8d2 156/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 157#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM
158 /* 0: */
159 /* .quad plt0-1f */
160 /* __glink: */
161#define MFLR_R12 0x7d8802a6 /* mflr %12 */
162#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
163 /* 1: */
164#define MFLR_R11 0x7d6802a6 /* mflr %11 */
165#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
166#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
167#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
168 /* ld %11,0(%12) */
169 /* ld %2,8(%12) */
170 /* mtctr %11 */
171 /* ld %11,16(%12) */
172 /* bctr */
5d1634d7
AM
173
174/* Pad with this. */
175#define NOP 0x60000000
176
721956f4
AM
177/* Some other nops. */
178#define CROR_151515 0x4def7b82
179#define CROR_313131 0x4ffffb82
180
cedb70c5 181/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM
182#define LI_R0_0 0x38000000 /* li %r0,0 */
183#define B_DOT 0x48000000 /* b . */
184
185/* After that, we need two instructions to load the index, followed by
186 a branch. */
187#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 188#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 189
deb0e272
AM
190/* Instructions used by the save and restore reg functions. */
191#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
192#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
193#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
194#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM
195#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
196#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM
197#define LI_R12_0 0x39800000 /* li %r12,0 */
198#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
199#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
200#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM
201#define BLR 0x4e800020 /* blr */
202
41bd81ab
AM
203/* Since .opd is an array of descriptors and each entry will end up
204 with identical R_PPC64_RELATIVE relocs, there is really no need to
205 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 206 relocate .opd without reloc entries. */
41bd81ab
AM
207#ifndef NO_OPD_RELOCS
208#define NO_OPD_RELOCS 0
209#endif
5bd4f169 210\f
f5e87a1d 211#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 212
5bd4f169 213/* Relocation HOWTO's. */
04c9666a 214static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM
215
216static reloc_howto_type ppc64_elf_howto_raw[] = {
217 /* This reloc does nothing. */
218 HOWTO (R_PPC64_NONE, /* type */
219 0, /* rightshift */
411e1bfb
AM
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 32, /* bitsize */
b34976b6 222 FALSE, /* pc_relative */
5bd4f169 223 0, /* bitpos */
f5e87a1d 224 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC64_NONE", /* name */
b34976b6 227 FALSE, /* partial_inplace */
d006db6c 228 0, /* src_mask */
5bd4f169 229 0, /* dst_mask */
b34976b6 230 FALSE), /* pcrel_offset */
5bd4f169
AM
231
232 /* A standard 32 bit relocation. */
233 HOWTO (R_PPC64_ADDR32, /* type */
234 0, /* rightshift */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
236 32, /* bitsize */
b34976b6 237 FALSE, /* pc_relative */
5bd4f169
AM
238 0, /* bitpos */
239 complain_overflow_bitfield, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC64_ADDR32", /* name */
b34976b6 242 FALSE, /* partial_inplace */
5bd4f169
AM
243 0, /* src_mask */
244 0xffffffff, /* dst_mask */
b34976b6 245 FALSE), /* pcrel_offset */
5bd4f169
AM
246
247 /* An absolute 26 bit branch; the lower two bits must be zero.
248 FIXME: we don't check that, we just clear them. */
249 HOWTO (R_PPC64_ADDR24, /* type */
250 0, /* rightshift */
251 2, /* size (0 = byte, 1 = short, 2 = long) */
252 26, /* bitsize */
b34976b6 253 FALSE, /* pc_relative */
5bd4f169
AM
254 0, /* bitpos */
255 complain_overflow_bitfield, /* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_PPC64_ADDR24", /* name */
b34976b6 258 FALSE, /* partial_inplace */
d006db6c 259 0, /* src_mask */
f5e87a1d 260 0x03fffffc, /* dst_mask */
b34976b6 261 FALSE), /* pcrel_offset */
5bd4f169
AM
262
263 /* A standard 16 bit relocation. */
264 HOWTO (R_PPC64_ADDR16, /* type */
265 0, /* rightshift */
266 1, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
b34976b6 268 FALSE, /* pc_relative */
5bd4f169
AM
269 0, /* bitpos */
270 complain_overflow_bitfield, /* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_PPC64_ADDR16", /* name */
b34976b6 273 FALSE, /* partial_inplace */
5bd4f169
AM
274 0, /* src_mask */
275 0xffff, /* dst_mask */
b34976b6 276 FALSE), /* pcrel_offset */
5bd4f169
AM
277
278 /* A 16 bit relocation without overflow. */
279 HOWTO (R_PPC64_ADDR16_LO, /* type */
280 0, /* rightshift */
281 1, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
5bd4f169
AM
284 0, /* bitpos */
285 complain_overflow_dont,/* complain_on_overflow */
286 bfd_elf_generic_reloc, /* special_function */
287 "R_PPC64_ADDR16_LO", /* name */
b34976b6 288 FALSE, /* partial_inplace */
5bd4f169
AM
289 0, /* src_mask */
290 0xffff, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
5bd4f169
AM
292
293 /* Bits 16-31 of an address. */
294 HOWTO (R_PPC64_ADDR16_HI, /* type */
295 16, /* rightshift */
296 1, /* size (0 = byte, 1 = short, 2 = long) */
297 16, /* bitsize */
b34976b6 298 FALSE, /* pc_relative */
5bd4f169
AM
299 0, /* bitpos */
300 complain_overflow_dont, /* complain_on_overflow */
301 bfd_elf_generic_reloc, /* special_function */
302 "R_PPC64_ADDR16_HI", /* name */
b34976b6 303 FALSE, /* partial_inplace */
5bd4f169
AM
304 0, /* src_mask */
305 0xffff, /* dst_mask */
b34976b6 306 FALSE), /* pcrel_offset */
5bd4f169
AM
307
308 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
309 bits, treated as a signed number, is negative. */
310 HOWTO (R_PPC64_ADDR16_HA, /* type */
311 16, /* rightshift */
312 1, /* size (0 = byte, 1 = short, 2 = long) */
313 16, /* bitsize */
b34976b6 314 FALSE, /* pc_relative */
5bd4f169
AM
315 0, /* bitpos */
316 complain_overflow_dont, /* complain_on_overflow */
805fc799 317 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 318 "R_PPC64_ADDR16_HA", /* name */
b34976b6 319 FALSE, /* partial_inplace */
5bd4f169
AM
320 0, /* src_mask */
321 0xffff, /* dst_mask */
b34976b6 322 FALSE), /* pcrel_offset */
5bd4f169
AM
323
324 /* An absolute 16 bit branch; the lower two bits must be zero.
325 FIXME: we don't check that, we just clear them. */
326 HOWTO (R_PPC64_ADDR14, /* type */
327 0, /* rightshift */
328 2, /* size (0 = byte, 1 = short, 2 = long) */
329 16, /* bitsize */
b34976b6 330 FALSE, /* pc_relative */
5bd4f169
AM
331 0, /* bitpos */
332 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 333 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 334 "R_PPC64_ADDR14", /* name */
b34976b6 335 FALSE, /* partial_inplace */
d006db6c 336 0, /* src_mask */
f5e87a1d 337 0x0000fffc, /* dst_mask */
b34976b6 338 FALSE), /* pcrel_offset */
5bd4f169
AM
339
340 /* An absolute 16 bit branch, for which bit 10 should be set to
341 indicate that the branch is expected to be taken. The lower two
342 bits must be zero. */
343 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
344 0, /* rightshift */
345 2, /* size (0 = byte, 1 = short, 2 = long) */
346 16, /* bitsize */
b34976b6 347 FALSE, /* pc_relative */
5bd4f169
AM
348 0, /* bitpos */
349 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 350 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 351 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 352 FALSE, /* partial_inplace */
d006db6c 353 0, /* src_mask */
f5e87a1d 354 0x0000fffc, /* dst_mask */
b34976b6 355 FALSE), /* pcrel_offset */
5bd4f169
AM
356
357 /* An absolute 16 bit branch, for which bit 10 should be set to
358 indicate that the branch is not expected to be taken. The lower
359 two bits must be zero. */
360 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 FALSE, /* pc_relative */
5bd4f169
AM
365 0, /* bitpos */
366 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 367 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 368 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 369 FALSE, /* partial_inplace */
d006db6c 370 0, /* src_mask */
f5e87a1d 371 0x0000fffc, /* dst_mask */
b34976b6 372 FALSE), /* pcrel_offset */
5bd4f169
AM
373
374 /* A relative 26 bit branch; the lower two bits must be zero. */
375 HOWTO (R_PPC64_REL24, /* type */
376 0, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 26, /* bitsize */
b34976b6 379 TRUE, /* pc_relative */
5bd4f169
AM
380 0, /* bitpos */
381 complain_overflow_signed, /* complain_on_overflow */
2441e016 382 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 383 "R_PPC64_REL24", /* name */
b34976b6 384 FALSE, /* partial_inplace */
d006db6c 385 0, /* src_mask */
f5e87a1d 386 0x03fffffc, /* dst_mask */
b34976b6 387 TRUE), /* pcrel_offset */
5bd4f169
AM
388
389 /* A relative 16 bit branch; the lower two bits must be zero. */
390 HOWTO (R_PPC64_REL14, /* type */
391 0, /* rightshift */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
393 16, /* bitsize */
b34976b6 394 TRUE, /* pc_relative */
5bd4f169
AM
395 0, /* bitpos */
396 complain_overflow_signed, /* complain_on_overflow */
2441e016 397 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 398 "R_PPC64_REL14", /* name */
b34976b6 399 FALSE, /* partial_inplace */
d006db6c 400 0, /* src_mask */
f5e87a1d 401 0x0000fffc, /* dst_mask */
b34976b6 402 TRUE), /* pcrel_offset */
5bd4f169
AM
403
404 /* A relative 16 bit branch. Bit 10 should be set to indicate that
405 the branch is expected to be taken. The lower two bits must be
406 zero. */
407 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
408 0, /* rightshift */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
410 16, /* bitsize */
b34976b6 411 TRUE, /* pc_relative */
5bd4f169
AM
412 0, /* bitpos */
413 complain_overflow_signed, /* complain_on_overflow */
805fc799 414 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 415 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 416 FALSE, /* partial_inplace */
d006db6c 417 0, /* src_mask */
f5e87a1d 418 0x0000fffc, /* dst_mask */
b34976b6 419 TRUE), /* pcrel_offset */
5bd4f169
AM
420
421 /* A relative 16 bit branch. Bit 10 should be set to indicate that
422 the branch is not expected to be taken. The lower two bits must
423 be zero. */
424 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
425 0, /* rightshift */
426 2, /* size (0 = byte, 1 = short, 2 = long) */
427 16, /* bitsize */
b34976b6 428 TRUE, /* pc_relative */
5bd4f169
AM
429 0, /* bitpos */
430 complain_overflow_signed, /* complain_on_overflow */
805fc799 431 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 432 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 433 FALSE, /* partial_inplace */
d006db6c 434 0, /* src_mask */
f5e87a1d 435 0x0000fffc, /* dst_mask */
b34976b6 436 TRUE), /* pcrel_offset */
5bd4f169
AM
437
438 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
439 symbol. */
440 HOWTO (R_PPC64_GOT16, /* type */
441 0, /* rightshift */
442 1, /* size (0 = byte, 1 = short, 2 = long) */
443 16, /* bitsize */
b34976b6 444 FALSE, /* pc_relative */
5bd4f169
AM
445 0, /* bitpos */
446 complain_overflow_signed, /* complain_on_overflow */
805fc799 447 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 448 "R_PPC64_GOT16", /* name */
b34976b6 449 FALSE, /* partial_inplace */
5bd4f169
AM
450 0, /* src_mask */
451 0xffff, /* dst_mask */
b34976b6 452 FALSE), /* pcrel_offset */
5bd4f169
AM
453
454 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
455 the symbol. */
456 HOWTO (R_PPC64_GOT16_LO, /* type */
457 0, /* rightshift */
458 1, /* size (0 = byte, 1 = short, 2 = long) */
459 16, /* bitsize */
b34976b6 460 FALSE, /* pc_relative */
5bd4f169
AM
461 0, /* bitpos */
462 complain_overflow_dont, /* complain_on_overflow */
805fc799 463 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 464 "R_PPC64_GOT16_LO", /* name */
b34976b6 465 FALSE, /* partial_inplace */
5bd4f169
AM
466 0, /* src_mask */
467 0xffff, /* dst_mask */
b34976b6 468 FALSE), /* pcrel_offset */
5bd4f169
AM
469
470 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
471 the symbol. */
472 HOWTO (R_PPC64_GOT16_HI, /* type */
473 16, /* rightshift */
474 1, /* size (0 = byte, 1 = short, 2 = long) */
475 16, /* bitsize */
b34976b6 476 FALSE, /* pc_relative */
5bd4f169
AM
477 0, /* bitpos */
478 complain_overflow_dont,/* complain_on_overflow */
805fc799 479 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 480 "R_PPC64_GOT16_HI", /* name */
b34976b6 481 FALSE, /* partial_inplace */
5bd4f169
AM
482 0, /* src_mask */
483 0xffff, /* dst_mask */
b34976b6 484 FALSE), /* pcrel_offset */
5bd4f169
AM
485
486 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
487 the symbol. */
488 HOWTO (R_PPC64_GOT16_HA, /* type */
489 16, /* rightshift */
490 1, /* size (0 = byte, 1 = short, 2 = long) */
491 16, /* bitsize */
b34976b6 492 FALSE, /* pc_relative */
5bd4f169
AM
493 0, /* bitpos */
494 complain_overflow_dont,/* complain_on_overflow */
805fc799 495 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 496 "R_PPC64_GOT16_HA", /* name */
b34976b6 497 FALSE, /* partial_inplace */
5bd4f169
AM
498 0, /* src_mask */
499 0xffff, /* dst_mask */
b34976b6 500 FALSE), /* pcrel_offset */
5bd4f169
AM
501
502 /* This is used only by the dynamic linker. The symbol should exist
503 both in the object being run and in some shared library. The
504 dynamic linker copies the data addressed by the symbol from the
505 shared library into the object, because the object being
506 run has to have the data at some particular address. */
507 HOWTO (R_PPC64_COPY, /* type */
508 0, /* rightshift */
f5e87a1d
AM
509 0, /* this one is variable size */
510 0, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
5bd4f169 512 0, /* bitpos */
f5e87a1d
AM
513 complain_overflow_dont, /* complain_on_overflow */
514 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 515 "R_PPC64_COPY", /* name */
b34976b6 516 FALSE, /* partial_inplace */
5bd4f169
AM
517 0, /* src_mask */
518 0, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
5bd4f169
AM
520
521 /* Like R_PPC64_ADDR64, but used when setting global offset table
522 entries. */
523 HOWTO (R_PPC64_GLOB_DAT, /* type */
524 0, /* rightshift */
525 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
526 64, /* bitsize */
b34976b6 527 FALSE, /* pc_relative */
5bd4f169
AM
528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
805fc799 530 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 531 "R_PPC64_GLOB_DAT", /* name */
b34976b6 532 FALSE, /* partial_inplace */
5bd4f169 533 0, /* src_mask */
f5e87a1d 534 ONES (64), /* dst_mask */
b34976b6 535 FALSE), /* pcrel_offset */
5bd4f169
AM
536
537 /* Created by the link editor. Marks a procedure linkage table
538 entry for a symbol. */
539 HOWTO (R_PPC64_JMP_SLOT, /* type */
540 0, /* rightshift */
541 0, /* size (0 = byte, 1 = short, 2 = long) */
542 0, /* bitsize */
b34976b6 543 FALSE, /* pc_relative */
5bd4f169
AM
544 0, /* bitpos */
545 complain_overflow_dont, /* complain_on_overflow */
805fc799 546 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 547 "R_PPC64_JMP_SLOT", /* name */
b34976b6 548 FALSE, /* partial_inplace */
5bd4f169
AM
549 0, /* src_mask */
550 0, /* dst_mask */
b34976b6 551 FALSE), /* pcrel_offset */
5bd4f169
AM
552
553 /* Used only by the dynamic linker. When the object is run, this
554 doubleword64 is set to the load address of the object, plus the
555 addend. */
556 HOWTO (R_PPC64_RELATIVE, /* type */
557 0, /* rightshift */
558 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
559 64, /* bitsize */
b34976b6 560 FALSE, /* pc_relative */
5bd4f169
AM
561 0, /* bitpos */
562 complain_overflow_dont, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
564 "R_PPC64_RELATIVE", /* name */
b34976b6 565 FALSE, /* partial_inplace */
5bd4f169 566 0, /* src_mask */
f5e87a1d 567 ONES (64), /* dst_mask */
b34976b6 568 FALSE), /* pcrel_offset */
5bd4f169
AM
569
570 /* Like R_PPC64_ADDR32, but may be unaligned. */
571 HOWTO (R_PPC64_UADDR32, /* type */
572 0, /* rightshift */
573 2, /* size (0 = byte, 1 = short, 2 = long) */
574 32, /* bitsize */
b34976b6 575 FALSE, /* pc_relative */
5bd4f169
AM
576 0, /* bitpos */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_PPC64_UADDR32", /* name */
b34976b6 580 FALSE, /* partial_inplace */
5bd4f169
AM
581 0, /* src_mask */
582 0xffffffff, /* dst_mask */
b34976b6 583 FALSE), /* pcrel_offset */
5bd4f169
AM
584
585 /* Like R_PPC64_ADDR16, but may be unaligned. */
586 HOWTO (R_PPC64_UADDR16, /* type */
587 0, /* rightshift */
588 1, /* size (0 = byte, 1 = short, 2 = long) */
589 16, /* bitsize */
b34976b6 590 FALSE, /* pc_relative */
5bd4f169
AM
591 0, /* bitpos */
592 complain_overflow_bitfield, /* complain_on_overflow */
593 bfd_elf_generic_reloc, /* special_function */
594 "R_PPC64_UADDR16", /* name */
b34976b6 595 FALSE, /* partial_inplace */
5bd4f169
AM
596 0, /* src_mask */
597 0xffff, /* dst_mask */
b34976b6 598 FALSE), /* pcrel_offset */
5bd4f169
AM
599
600 /* 32-bit PC relative. */
601 HOWTO (R_PPC64_REL32, /* type */
602 0, /* rightshift */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
604 32, /* bitsize */
b34976b6 605 TRUE, /* pc_relative */
5bd4f169 606 0, /* bitpos */
cedb70c5 607 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM
608 complain_overflow_signed, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC64_REL32", /* name */
b34976b6 611 FALSE, /* partial_inplace */
5bd4f169
AM
612 0, /* src_mask */
613 0xffffffff, /* dst_mask */
b34976b6 614 TRUE), /* pcrel_offset */
5bd4f169 615
10ed1bba 616 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
617 HOWTO (R_PPC64_PLT32, /* type */
618 0, /* rightshift */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
620 32, /* bitsize */
b34976b6 621 FALSE, /* pc_relative */
5bd4f169
AM
622 0, /* bitpos */
623 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 624 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 625 "R_PPC64_PLT32", /* name */
b34976b6 626 FALSE, /* partial_inplace */
5bd4f169 627 0, /* src_mask */
f5e87a1d 628 0xffffffff, /* dst_mask */
b34976b6 629 FALSE), /* pcrel_offset */
5bd4f169
AM
630
631 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
632 FIXME: R_PPC64_PLTREL32 not supported. */
633 HOWTO (R_PPC64_PLTREL32, /* type */
634 0, /* rightshift */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
636 32, /* bitsize */
b34976b6 637 TRUE, /* pc_relative */
5bd4f169
AM
638 0, /* bitpos */
639 complain_overflow_signed, /* complain_on_overflow */
640 bfd_elf_generic_reloc, /* special_function */
641 "R_PPC64_PLTREL32", /* name */
b34976b6 642 FALSE, /* partial_inplace */
5bd4f169 643 0, /* src_mask */
f5e87a1d 644 0xffffffff, /* dst_mask */
b34976b6 645 TRUE), /* pcrel_offset */
5bd4f169
AM
646
647 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
648 the symbol. */
649 HOWTO (R_PPC64_PLT16_LO, /* type */
650 0, /* rightshift */
651 1, /* size (0 = byte, 1 = short, 2 = long) */
652 16, /* bitsize */
b34976b6 653 FALSE, /* pc_relative */
5bd4f169
AM
654 0, /* bitpos */
655 complain_overflow_dont, /* complain_on_overflow */
805fc799 656 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 657 "R_PPC64_PLT16_LO", /* name */
b34976b6 658 FALSE, /* partial_inplace */
5bd4f169
AM
659 0, /* src_mask */
660 0xffff, /* dst_mask */
b34976b6 661 FALSE), /* pcrel_offset */
5bd4f169
AM
662
663 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
664 the symbol. */
665 HOWTO (R_PPC64_PLT16_HI, /* type */
666 16, /* rightshift */
667 1, /* size (0 = byte, 1 = short, 2 = long) */
668 16, /* bitsize */
b34976b6 669 FALSE, /* pc_relative */
5bd4f169
AM
670 0, /* bitpos */
671 complain_overflow_dont, /* complain_on_overflow */
805fc799 672 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 673 "R_PPC64_PLT16_HI", /* name */
b34976b6 674 FALSE, /* partial_inplace */
5bd4f169
AM
675 0, /* src_mask */
676 0xffff, /* dst_mask */
b34976b6 677 FALSE), /* pcrel_offset */
5bd4f169
AM
678
679 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
680 the symbol. */
681 HOWTO (R_PPC64_PLT16_HA, /* type */
682 16, /* rightshift */
683 1, /* size (0 = byte, 1 = short, 2 = long) */
684 16, /* bitsize */
b34976b6 685 FALSE, /* pc_relative */
5bd4f169
AM
686 0, /* bitpos */
687 complain_overflow_dont, /* complain_on_overflow */
805fc799 688 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 689 "R_PPC64_PLT16_HA", /* name */
b34976b6 690 FALSE, /* partial_inplace */
5bd4f169
AM
691 0, /* src_mask */
692 0xffff, /* dst_mask */
b34976b6 693 FALSE), /* pcrel_offset */
5bd4f169 694
c061c2d8 695 /* 16-bit section relative relocation. */
5bd4f169
AM
696 HOWTO (R_PPC64_SECTOFF, /* type */
697 0, /* rightshift */
c061c2d8
AM
698 1, /* size (0 = byte, 1 = short, 2 = long) */
699 16, /* bitsize */
b34976b6 700 FALSE, /* pc_relative */
5bd4f169
AM
701 0, /* bitpos */
702 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 703 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 704 "R_PPC64_SECTOFF", /* name */
b34976b6 705 FALSE, /* partial_inplace */
5bd4f169 706 0, /* src_mask */
c061c2d8 707 0xffff, /* dst_mask */
b34976b6 708 FALSE), /* pcrel_offset */
5bd4f169 709
c061c2d8 710 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM
711 HOWTO (R_PPC64_SECTOFF_LO, /* type */
712 0, /* rightshift */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
714 16, /* bitsize */
b34976b6 715 FALSE, /* pc_relative */
5bd4f169
AM
716 0, /* bitpos */
717 complain_overflow_dont, /* complain_on_overflow */
805fc799 718 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 719 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 720 FALSE, /* partial_inplace */
5bd4f169
AM
721 0, /* src_mask */
722 0xffff, /* dst_mask */
b34976b6 723 FALSE), /* pcrel_offset */
5bd4f169
AM
724
725 /* 16-bit upper half section relative relocation. */
726 HOWTO (R_PPC64_SECTOFF_HI, /* type */
727 16, /* rightshift */
728 1, /* size (0 = byte, 1 = short, 2 = long) */
729 16, /* bitsize */
b34976b6 730 FALSE, /* pc_relative */
5bd4f169
AM
731 0, /* bitpos */
732 complain_overflow_dont, /* complain_on_overflow */
805fc799 733 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 734 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 735 FALSE, /* partial_inplace */
5bd4f169
AM
736 0, /* src_mask */
737 0xffff, /* dst_mask */
b34976b6 738 FALSE), /* pcrel_offset */
5bd4f169
AM
739
740 /* 16-bit upper half adjusted section relative relocation. */
741 HOWTO (R_PPC64_SECTOFF_HA, /* type */
742 16, /* rightshift */
743 1, /* size (0 = byte, 1 = short, 2 = long) */
744 16, /* bitsize */
b34976b6 745 FALSE, /* pc_relative */
5bd4f169
AM
746 0, /* bitpos */
747 complain_overflow_dont, /* complain_on_overflow */
805fc799 748 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 749 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 750 FALSE, /* partial_inplace */
5bd4f169
AM
751 0, /* src_mask */
752 0xffff, /* dst_mask */
b34976b6 753 FALSE), /* pcrel_offset */
5bd4f169 754
04c9666a
AM
755 /* Like R_PPC64_REL24 without touching the two least significant bits. */
756 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM
757 2, /* rightshift */
758 2, /* size (0 = byte, 1 = short, 2 = long) */
759 30, /* bitsize */
b34976b6 760 TRUE, /* pc_relative */
5bd4f169
AM
761 0, /* bitpos */
762 complain_overflow_dont, /* complain_on_overflow */
763 bfd_elf_generic_reloc, /* special_function */
04c9666a 764 "R_PPC64_REL30", /* name */
b34976b6 765 FALSE, /* partial_inplace */
d006db6c 766 0, /* src_mask */
5bd4f169 767 0xfffffffc, /* dst_mask */
b34976b6 768 TRUE), /* pcrel_offset */
5bd4f169
AM
769
770 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
771
772 /* A standard 64-bit relocation. */
773 HOWTO (R_PPC64_ADDR64, /* type */
774 0, /* rightshift */
775 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
776 64, /* bitsize */
b34976b6 777 FALSE, /* pc_relative */
5bd4f169
AM
778 0, /* bitpos */
779 complain_overflow_dont, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC64_ADDR64", /* name */
b34976b6 782 FALSE, /* partial_inplace */
5bd4f169 783 0, /* src_mask */
f5e87a1d 784 ONES (64), /* dst_mask */
b34976b6 785 FALSE), /* pcrel_offset */
5bd4f169
AM
786
787 /* The bits 32-47 of an address. */
788 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
789 32, /* rightshift */
790 1, /* size (0 = byte, 1 = short, 2 = long) */
791 16, /* bitsize */
b34976b6 792 FALSE, /* pc_relative */
5bd4f169
AM
793 0, /* bitpos */
794 complain_overflow_dont, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 797 FALSE, /* partial_inplace */
5bd4f169
AM
798 0, /* src_mask */
799 0xffff, /* dst_mask */
b34976b6 800 FALSE), /* pcrel_offset */
5bd4f169
AM
801
802 /* The bits 32-47 of an address, plus 1 if the contents of the low
803 16 bits, treated as a signed number, is negative. */
804 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
805 32, /* rightshift */
806 1, /* size (0 = byte, 1 = short, 2 = long) */
807 16, /* bitsize */
b34976b6 808 FALSE, /* pc_relative */
5bd4f169
AM
809 0, /* bitpos */
810 complain_overflow_dont, /* complain_on_overflow */
805fc799 811 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 812 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 813 FALSE, /* partial_inplace */
5bd4f169
AM
814 0, /* src_mask */
815 0xffff, /* dst_mask */
b34976b6 816 FALSE), /* pcrel_offset */
5bd4f169
AM
817
818 /* The bits 48-63 of an address. */
819 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
820 48, /* rightshift */
821 1, /* size (0 = byte, 1 = short, 2 = long) */
822 16, /* bitsize */
b34976b6 823 FALSE, /* pc_relative */
5bd4f169
AM
824 0, /* bitpos */
825 complain_overflow_dont, /* complain_on_overflow */
826 bfd_elf_generic_reloc, /* special_function */
827 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 828 FALSE, /* partial_inplace */
5bd4f169
AM
829 0, /* src_mask */
830 0xffff, /* dst_mask */
b34976b6 831 FALSE), /* pcrel_offset */
5bd4f169
AM
832
833 /* The bits 48-63 of an address, plus 1 if the contents of the low
834 16 bits, treated as a signed number, is negative. */
835 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
836 48, /* rightshift */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
838 16, /* bitsize */
b34976b6 839 FALSE, /* pc_relative */
5bd4f169
AM
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
805fc799 842 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 843 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 844 FALSE, /* partial_inplace */
5bd4f169
AM
845 0, /* src_mask */
846 0xffff, /* dst_mask */
b34976b6 847 FALSE), /* pcrel_offset */
5bd4f169
AM
848
849 /* Like ADDR64, but may be unaligned. */
850 HOWTO (R_PPC64_UADDR64, /* type */
851 0, /* rightshift */
852 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
853 64, /* bitsize */
b34976b6 854 FALSE, /* pc_relative */
5bd4f169
AM
855 0, /* bitpos */
856 complain_overflow_dont, /* complain_on_overflow */
857 bfd_elf_generic_reloc, /* special_function */
858 "R_PPC64_UADDR64", /* name */
b34976b6 859 FALSE, /* partial_inplace */
5bd4f169 860 0, /* src_mask */
f5e87a1d 861 ONES (64), /* dst_mask */
b34976b6 862 FALSE), /* pcrel_offset */
5bd4f169
AM
863
864 /* 64-bit relative relocation. */
865 HOWTO (R_PPC64_REL64, /* type */
866 0, /* rightshift */
867 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
868 64, /* bitsize */
b34976b6 869 TRUE, /* pc_relative */
5bd4f169
AM
870 0, /* bitpos */
871 complain_overflow_dont, /* complain_on_overflow */
872 bfd_elf_generic_reloc, /* special_function */
873 "R_PPC64_REL64", /* name */
b34976b6 874 FALSE, /* partial_inplace */
5bd4f169 875 0, /* src_mask */
f5e87a1d 876 ONES (64), /* dst_mask */
b34976b6 877 TRUE), /* pcrel_offset */
5bd4f169 878
cedb70c5 879 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
880 HOWTO (R_PPC64_PLT64, /* type */
881 0, /* rightshift */
882 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
883 64, /* bitsize */
b34976b6 884 FALSE, /* pc_relative */
5bd4f169
AM
885 0, /* bitpos */
886 complain_overflow_dont, /* complain_on_overflow */
805fc799 887 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 888 "R_PPC64_PLT64", /* name */
b34976b6 889 FALSE, /* partial_inplace */
5bd4f169 890 0, /* src_mask */
f5e87a1d 891 ONES (64), /* dst_mask */
b34976b6 892 FALSE), /* pcrel_offset */
5bd4f169
AM
893
894 /* 64-bit PC relative relocation to the symbol's procedure linkage
895 table. */
896 /* FIXME: R_PPC64_PLTREL64 not supported. */
897 HOWTO (R_PPC64_PLTREL64, /* type */
898 0, /* rightshift */
899 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
900 64, /* bitsize */
b34976b6 901 TRUE, /* pc_relative */
5bd4f169
AM
902 0, /* bitpos */
903 complain_overflow_dont, /* complain_on_overflow */
805fc799 904 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 905 "R_PPC64_PLTREL64", /* name */
b34976b6 906 FALSE, /* partial_inplace */
5bd4f169 907 0, /* src_mask */
f5e87a1d 908 ONES (64), /* dst_mask */
b34976b6 909 TRUE), /* pcrel_offset */
5bd4f169
AM
910
911 /* 16 bit TOC-relative relocation. */
912
913 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
914 HOWTO (R_PPC64_TOC16, /* type */
915 0, /* rightshift */
916 1, /* size (0 = byte, 1 = short, 2 = long) */
917 16, /* bitsize */
b34976b6 918 FALSE, /* pc_relative */
5bd4f169
AM
919 0, /* bitpos */
920 complain_overflow_signed, /* complain_on_overflow */
805fc799 921 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 922 "R_PPC64_TOC16", /* name */
b34976b6 923 FALSE, /* partial_inplace */
5bd4f169
AM
924 0, /* src_mask */
925 0xffff, /* dst_mask */
b34976b6 926 FALSE), /* pcrel_offset */
5bd4f169
AM
927
928 /* 16 bit TOC-relative relocation without overflow. */
929
930 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
931 HOWTO (R_PPC64_TOC16_LO, /* type */
932 0, /* rightshift */
933 1, /* size (0 = byte, 1 = short, 2 = long) */
934 16, /* bitsize */
b34976b6 935 FALSE, /* pc_relative */
5bd4f169
AM
936 0, /* bitpos */
937 complain_overflow_dont, /* complain_on_overflow */
805fc799 938 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 939 "R_PPC64_TOC16_LO", /* name */
b34976b6 940 FALSE, /* partial_inplace */
5bd4f169
AM
941 0, /* src_mask */
942 0xffff, /* dst_mask */
b34976b6 943 FALSE), /* pcrel_offset */
5bd4f169
AM
944
945 /* 16 bit TOC-relative relocation, high 16 bits. */
946
947 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
948 HOWTO (R_PPC64_TOC16_HI, /* type */
949 16, /* rightshift */
950 1, /* size (0 = byte, 1 = short, 2 = long) */
951 16, /* bitsize */
b34976b6 952 FALSE, /* pc_relative */
5bd4f169
AM
953 0, /* bitpos */
954 complain_overflow_dont, /* complain_on_overflow */
805fc799 955 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 956 "R_PPC64_TOC16_HI", /* name */
b34976b6 957 FALSE, /* partial_inplace */
5bd4f169
AM
958 0, /* src_mask */
959 0xffff, /* dst_mask */
b34976b6 960 FALSE), /* pcrel_offset */
5bd4f169
AM
961
962 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
963 contents of the low 16 bits, treated as a signed number, is
964 negative. */
965
966 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
967 HOWTO (R_PPC64_TOC16_HA, /* type */
968 16, /* rightshift */
969 1, /* size (0 = byte, 1 = short, 2 = long) */
970 16, /* bitsize */
b34976b6 971 FALSE, /* pc_relative */
5bd4f169
AM
972 0, /* bitpos */
973 complain_overflow_dont, /* complain_on_overflow */
805fc799 974 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 975 "R_PPC64_TOC16_HA", /* name */
b34976b6 976 FALSE, /* partial_inplace */
5bd4f169
AM
977 0, /* src_mask */
978 0xffff, /* dst_mask */
b34976b6 979 FALSE), /* pcrel_offset */
5bd4f169
AM
980
981 /* 64-bit relocation; insert value of TOC base (.TOC.). */
982
983 /* R_PPC64_TOC 51 doubleword64 .TOC. */
984 HOWTO (R_PPC64_TOC, /* type */
985 0, /* rightshift */
986 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
987 64, /* bitsize */
b34976b6 988 FALSE, /* pc_relative */
5bd4f169
AM
989 0, /* bitpos */
990 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 991 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 992 "R_PPC64_TOC", /* name */
b34976b6 993 FALSE, /* partial_inplace */
5bd4f169 994 0, /* src_mask */
f5e87a1d 995 ONES (64), /* dst_mask */
b34976b6 996 FALSE), /* pcrel_offset */
5bd4f169
AM
997
998 /* Like R_PPC64_GOT16, but also informs the link editor that the
999 value to relocate may (!) refer to a PLT entry which the link
1000 editor (a) may replace with the symbol value. If the link editor
1001 is unable to fully resolve the symbol, it may (b) create a PLT
1002 entry and store the address to the new PLT entry in the GOT.
1003 This permits lazy resolution of function symbols at run time.
1004 The link editor may also skip all of this and just (c) emit a
1005 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1006 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1007 HOWTO (R_PPC64_PLTGOT16, /* type */
1008 0, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 16, /* bitsize */
b34976b6 1011 FALSE, /* pc_relative */
5bd4f169
AM
1012 0, /* bitpos */
1013 complain_overflow_signed, /* complain_on_overflow */
805fc799 1014 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM
1015 "R_PPC64_PLTGOT16", /* name */
1016 FALSE, /* partial_inplace */
1017 0, /* src_mask */
1018 0xffff, /* dst_mask */
1019 FALSE), /* pcrel_offset */
1020
1021 /* Like R_PPC64_PLTGOT16, but without overflow. */
1022 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1023 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1024 0, /* rightshift */
1025 1, /* size (0 = byte, 1 = short, 2 = long) */
1026 16, /* bitsize */
1027 FALSE, /* pc_relative */
1028 0, /* bitpos */
1029 complain_overflow_dont, /* complain_on_overflow */
1030 ppc64_elf_unhandled_reloc, /* special_function */
1031 "R_PPC64_PLTGOT16_LO", /* name */
1032 FALSE, /* partial_inplace */
1033 0, /* src_mask */
1034 0xffff, /* dst_mask */
1035 FALSE), /* pcrel_offset */
1036
1037 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1038 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1039 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1040 16, /* rightshift */
1041 1, /* size (0 = byte, 1 = short, 2 = long) */
1042 16, /* bitsize */
1043 FALSE, /* pc_relative */
1044 0, /* bitpos */
1045 complain_overflow_dont, /* complain_on_overflow */
1046 ppc64_elf_unhandled_reloc, /* special_function */
1047 "R_PPC64_PLTGOT16_HI", /* name */
1048 FALSE, /* partial_inplace */
1049 0, /* src_mask */
1050 0xffff, /* dst_mask */
1051 FALSE), /* pcrel_offset */
1052
1053 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1054 1 if the contents of the low 16 bits, treated as a signed number,
1055 is negative. */
1056 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1058 16, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 16, /* bitsize */
1061 FALSE, /* pc_relative */
1062 0, /* bitpos */
1063 complain_overflow_dont,/* complain_on_overflow */
1064 ppc64_elf_unhandled_reloc, /* special_function */
1065 "R_PPC64_PLTGOT16_HA", /* name */
1066 FALSE, /* partial_inplace */
1067 0, /* src_mask */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1070
1071 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1072 HOWTO (R_PPC64_ADDR16_DS, /* type */
1073 0, /* rightshift */
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1075 16, /* bitsize */
1076 FALSE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_bitfield, /* complain_on_overflow */
1079 bfd_elf_generic_reloc, /* special_function */
1080 "R_PPC64_ADDR16_DS", /* name */
1081 FALSE, /* partial_inplace */
1082 0, /* src_mask */
1083 0xfffc, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1085
1086 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1087 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1088 0, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1090 16, /* bitsize */
1091 FALSE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 bfd_elf_generic_reloc, /* special_function */
1095 "R_PPC64_ADDR16_LO_DS",/* name */
1096 FALSE, /* partial_inplace */
1097 0, /* src_mask */
1098 0xfffc, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1100
1101 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1102 HOWTO (R_PPC64_GOT16_DS, /* type */
1103 0, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1105 16, /* bitsize */
1106 FALSE, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_signed, /* complain_on_overflow */
1109 ppc64_elf_unhandled_reloc, /* special_function */
1110 "R_PPC64_GOT16_DS", /* name */
1111 FALSE, /* partial_inplace */
1112 0, /* src_mask */
1113 0xfffc, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1115
1116 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1117 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1118 0, /* rightshift */
1119 1, /* size (0 = byte, 1 = short, 2 = long) */
1120 16, /* bitsize */
1121 FALSE, /* pc_relative */
1122 0, /* bitpos */
1123 complain_overflow_dont, /* complain_on_overflow */
1124 ppc64_elf_unhandled_reloc, /* special_function */
1125 "R_PPC64_GOT16_LO_DS", /* name */
1126 FALSE, /* partial_inplace */
1127 0, /* src_mask */
1128 0xfffc, /* dst_mask */
1129 FALSE), /* pcrel_offset */
1130
1131 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1132 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1133 0, /* rightshift */
1134 1, /* size (0 = byte, 1 = short, 2 = long) */
1135 16, /* bitsize */
1136 FALSE, /* pc_relative */
1137 0, /* bitpos */
1138 complain_overflow_dont, /* complain_on_overflow */
1139 ppc64_elf_unhandled_reloc, /* special_function */
1140 "R_PPC64_PLT16_LO_DS", /* name */
1141 FALSE, /* partial_inplace */
1142 0, /* src_mask */
1143 0xfffc, /* dst_mask */
1144 FALSE), /* pcrel_offset */
1145
1146 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1147 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1148 0, /* rightshift */
1149 1, /* size (0 = byte, 1 = short, 2 = long) */
1150 16, /* bitsize */
1151 FALSE, /* pc_relative */
1152 0, /* bitpos */
1153 complain_overflow_bitfield, /* complain_on_overflow */
1154 ppc64_elf_sectoff_reloc, /* special_function */
1155 "R_PPC64_SECTOFF_DS", /* name */
1156 FALSE, /* partial_inplace */
1157 0, /* src_mask */
1158 0xfffc, /* dst_mask */
1159 FALSE), /* pcrel_offset */
1160
1161 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1162 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1163 0, /* rightshift */
1164 1, /* size (0 = byte, 1 = short, 2 = long) */
1165 16, /* bitsize */
1166 FALSE, /* pc_relative */
1167 0, /* bitpos */
1168 complain_overflow_dont, /* complain_on_overflow */
1169 ppc64_elf_sectoff_reloc, /* special_function */
1170 "R_PPC64_SECTOFF_LO_DS",/* name */
1171 FALSE, /* partial_inplace */
1172 0, /* src_mask */
1173 0xfffc, /* dst_mask */
1174 FALSE), /* pcrel_offset */
1175
1176 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1177 HOWTO (R_PPC64_TOC16_DS, /* type */
1178 0, /* rightshift */
1179 1, /* size (0 = byte, 1 = short, 2 = long) */
1180 16, /* bitsize */
1181 FALSE, /* pc_relative */
1182 0, /* bitpos */
1183 complain_overflow_signed, /* complain_on_overflow */
1184 ppc64_elf_toc_reloc, /* special_function */
1185 "R_PPC64_TOC16_DS", /* name */
1186 FALSE, /* partial_inplace */
1187 0, /* src_mask */
1188 0xfffc, /* dst_mask */
1189 FALSE), /* pcrel_offset */
1190
1191 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1192 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1193 0, /* rightshift */
1194 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 16, /* bitsize */
1196 FALSE, /* pc_relative */
1197 0, /* bitpos */
1198 complain_overflow_dont, /* complain_on_overflow */
1199 ppc64_elf_toc_reloc, /* special_function */
1200 "R_PPC64_TOC16_LO_DS", /* name */
1201 FALSE, /* partial_inplace */
1202 0, /* src_mask */
1203 0xfffc, /* dst_mask */
1204 FALSE), /* pcrel_offset */
1205
1206 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1207 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1208 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM
1209 0, /* rightshift */
1210 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 16, /* bitsize */
1212 FALSE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 ppc64_elf_unhandled_reloc, /* special_function */
1216 "R_PPC64_PLTGOT16_DS", /* name */
1217 FALSE, /* partial_inplace */
1218 0, /* src_mask */
1219 0xfffc, /* dst_mask */
1220 FALSE), /* pcrel_offset */
1221
1222 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1223 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1224 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1225 0, /* rightshift */
1226 1, /* size (0 = byte, 1 = short, 2 = long) */
1227 16, /* bitsize */
1228 FALSE, /* pc_relative */
1229 0, /* bitpos */
1230 complain_overflow_dont, /* complain_on_overflow */
1231 ppc64_elf_unhandled_reloc, /* special_function */
1232 "R_PPC64_PLTGOT16_LO_DS",/* name */
1233 FALSE, /* partial_inplace */
1234 0, /* src_mask */
1235 0xfffc, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1237
1238 /* Marker reloc for TLS. */
1239 HOWTO (R_PPC64_TLS,
1240 0, /* rightshift */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1242 32, /* bitsize */
1243 FALSE, /* pc_relative */
1244 0, /* bitpos */
1245 complain_overflow_dont, /* complain_on_overflow */
1246 bfd_elf_generic_reloc, /* special_function */
1247 "R_PPC64_TLS", /* name */
1248 FALSE, /* partial_inplace */
1249 0, /* src_mask */
1250 0, /* dst_mask */
1251 FALSE), /* pcrel_offset */
1252
1253 /* Computes the load module index of the load module that contains the
1254 definition of its TLS sym. */
1255 HOWTO (R_PPC64_DTPMOD64,
1256 0, /* rightshift */
1257 4, /* size (0 = byte, 1 = short, 2 = long) */
1258 64, /* bitsize */
1259 FALSE, /* pc_relative */
1260 0, /* bitpos */
1261 complain_overflow_dont, /* complain_on_overflow */
1262 ppc64_elf_unhandled_reloc, /* special_function */
1263 "R_PPC64_DTPMOD64", /* name */
1264 FALSE, /* partial_inplace */
1265 0, /* src_mask */
1266 ONES (64), /* dst_mask */
1267 FALSE), /* pcrel_offset */
1268
1269 /* Computes a dtv-relative displacement, the difference between the value
1270 of sym+add and the base address of the thread-local storage block that
1271 contains the definition of sym, minus 0x8000. */
1272 HOWTO (R_PPC64_DTPREL64,
1273 0, /* rightshift */
1274 4, /* size (0 = byte, 1 = short, 2 = long) */
1275 64, /* bitsize */
1276 FALSE, /* pc_relative */
1277 0, /* bitpos */
1278 complain_overflow_dont, /* complain_on_overflow */
1279 ppc64_elf_unhandled_reloc, /* special_function */
1280 "R_PPC64_DTPREL64", /* name */
1281 FALSE, /* partial_inplace */
1282 0, /* src_mask */
1283 ONES (64), /* dst_mask */
1284 FALSE), /* pcrel_offset */
1285
1286 /* A 16 bit dtprel reloc. */
1287 HOWTO (R_PPC64_DTPREL16,
1288 0, /* rightshift */
1289 1, /* size (0 = byte, 1 = short, 2 = long) */
1290 16, /* bitsize */
1291 FALSE, /* pc_relative */
1292 0, /* bitpos */
1293 complain_overflow_signed, /* complain_on_overflow */
1294 ppc64_elf_unhandled_reloc, /* special_function */
1295 "R_PPC64_DTPREL16", /* name */
1296 FALSE, /* partial_inplace */
1297 0, /* src_mask */
1298 0xffff, /* dst_mask */
1299 FALSE), /* pcrel_offset */
1300
1301 /* Like DTPREL16, but no overflow. */
1302 HOWTO (R_PPC64_DTPREL16_LO,
1303 0, /* rightshift */
1304 1, /* size (0 = byte, 1 = short, 2 = long) */
1305 16, /* bitsize */
1306 FALSE, /* pc_relative */
1307 0, /* bitpos */
1308 complain_overflow_dont, /* complain_on_overflow */
1309 ppc64_elf_unhandled_reloc, /* special_function */
1310 "R_PPC64_DTPREL16_LO", /* name */
1311 FALSE, /* partial_inplace */
1312 0, /* src_mask */
1313 0xffff, /* dst_mask */
1314 FALSE), /* pcrel_offset */
1315
1316 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1317 HOWTO (R_PPC64_DTPREL16_HI,
1318 16, /* rightshift */
1319 1, /* size (0 = byte, 1 = short, 2 = long) */
1320 16, /* bitsize */
1321 FALSE, /* pc_relative */
1322 0, /* bitpos */
1323 complain_overflow_dont, /* complain_on_overflow */
1324 ppc64_elf_unhandled_reloc, /* special_function */
1325 "R_PPC64_DTPREL16_HI", /* name */
1326 FALSE, /* partial_inplace */
1327 0, /* src_mask */
1328 0xffff, /* dst_mask */
1329 FALSE), /* pcrel_offset */
1330
1331 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1332 HOWTO (R_PPC64_DTPREL16_HA,
1333 16, /* rightshift */
1334 1, /* size (0 = byte, 1 = short, 2 = long) */
1335 16, /* bitsize */
1336 FALSE, /* pc_relative */
1337 0, /* bitpos */
1338 complain_overflow_dont, /* complain_on_overflow */
1339 ppc64_elf_unhandled_reloc, /* special_function */
1340 "R_PPC64_DTPREL16_HA", /* name */
1341 FALSE, /* partial_inplace */
1342 0, /* src_mask */
1343 0xffff, /* dst_mask */
1344 FALSE), /* pcrel_offset */
1345
1346 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1347 HOWTO (R_PPC64_DTPREL16_HIGHER,
1348 32, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1350 16, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc, /* special_function */
1355 "R_PPC64_DTPREL16_HIGHER", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 0xffff, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1362 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1363 32, /* rightshift */
1364 1, /* size (0 = byte, 1 = short, 2 = long) */
1365 16, /* bitsize */
1366 FALSE, /* pc_relative */
1367 0, /* bitpos */
1368 complain_overflow_dont, /* complain_on_overflow */
1369 ppc64_elf_unhandled_reloc, /* special_function */
1370 "R_PPC64_DTPREL16_HIGHERA", /* name */
1371 FALSE, /* partial_inplace */
1372 0, /* src_mask */
1373 0xffff, /* dst_mask */
1374 FALSE), /* pcrel_offset */
1375
1376 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1377 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1378 48, /* rightshift */
1379 1, /* size (0 = byte, 1 = short, 2 = long) */
1380 16, /* bitsize */
1381 FALSE, /* pc_relative */
1382 0, /* bitpos */
1383 complain_overflow_dont, /* complain_on_overflow */
1384 ppc64_elf_unhandled_reloc, /* special_function */
1385 "R_PPC64_DTPREL16_HIGHEST", /* name */
1386 FALSE, /* partial_inplace */
1387 0, /* src_mask */
1388 0xffff, /* dst_mask */
1389 FALSE), /* pcrel_offset */
1390
1391 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1392 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1393 48, /* rightshift */
1394 1, /* size (0 = byte, 1 = short, 2 = long) */
1395 16, /* bitsize */
1396 FALSE, /* pc_relative */
1397 0, /* bitpos */
1398 complain_overflow_dont, /* complain_on_overflow */
1399 ppc64_elf_unhandled_reloc, /* special_function */
1400 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1401 FALSE, /* partial_inplace */
1402 0, /* src_mask */
1403 0xffff, /* dst_mask */
1404 FALSE), /* pcrel_offset */
1405
1406 /* Like DTPREL16, but for insns with a DS field. */
1407 HOWTO (R_PPC64_DTPREL16_DS,
1408 0, /* rightshift */
1409 1, /* size (0 = byte, 1 = short, 2 = long) */
1410 16, /* bitsize */
1411 FALSE, /* pc_relative */
1412 0, /* bitpos */
1413 complain_overflow_signed, /* complain_on_overflow */
1414 ppc64_elf_unhandled_reloc, /* special_function */
1415 "R_PPC64_DTPREL16_DS", /* name */
1416 FALSE, /* partial_inplace */
1417 0, /* src_mask */
1418 0xfffc, /* dst_mask */
1419 FALSE), /* pcrel_offset */
1420
1421 /* Like DTPREL16_DS, but no overflow. */
1422 HOWTO (R_PPC64_DTPREL16_LO_DS,
1423 0, /* rightshift */
1424 1, /* size (0 = byte, 1 = short, 2 = long) */
1425 16, /* bitsize */
1426 FALSE, /* pc_relative */
1427 0, /* bitpos */
1428 complain_overflow_dont, /* complain_on_overflow */
1429 ppc64_elf_unhandled_reloc, /* special_function */
1430 "R_PPC64_DTPREL16_LO_DS", /* name */
1431 FALSE, /* partial_inplace */
1432 0, /* src_mask */
1433 0xfffc, /* dst_mask */
1434 FALSE), /* pcrel_offset */
1435
1436 /* Computes a tp-relative displacement, the difference between the value of
1437 sym+add and the value of the thread pointer (r13). */
1438 HOWTO (R_PPC64_TPREL64,
1439 0, /* rightshift */
1440 4, /* size (0 = byte, 1 = short, 2 = long) */
1441 64, /* bitsize */
1442 FALSE, /* pc_relative */
1443 0, /* bitpos */
1444 complain_overflow_dont, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc, /* special_function */
1446 "R_PPC64_TPREL64", /* name */
1447 FALSE, /* partial_inplace */
1448 0, /* src_mask */
1449 ONES (64), /* dst_mask */
1450 FALSE), /* pcrel_offset */
1451
1452 /* A 16 bit tprel reloc. */
1453 HOWTO (R_PPC64_TPREL16,
1454 0, /* rightshift */
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1456 16, /* bitsize */
1457 FALSE, /* pc_relative */
1458 0, /* bitpos */
1459 complain_overflow_signed, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc, /* special_function */
1461 "R_PPC64_TPREL16", /* name */
1462 FALSE, /* partial_inplace */
1463 0, /* src_mask */
1464 0xffff, /* dst_mask */
1465 FALSE), /* pcrel_offset */
1466
1467 /* Like TPREL16, but no overflow. */
1468 HOWTO (R_PPC64_TPREL16_LO,
1469 0, /* rightshift */
1470 1, /* size (0 = byte, 1 = short, 2 = long) */
1471 16, /* bitsize */
1472 FALSE, /* pc_relative */
1473 0, /* bitpos */
1474 complain_overflow_dont, /* complain_on_overflow */
1475 ppc64_elf_unhandled_reloc, /* special_function */
1476 "R_PPC64_TPREL16_LO", /* name */
1477 FALSE, /* partial_inplace */
1478 0, /* src_mask */
1479 0xffff, /* dst_mask */
1480 FALSE), /* pcrel_offset */
1481
1482 /* Like TPREL16_LO, but next higher group of 16 bits. */
1483 HOWTO (R_PPC64_TPREL16_HI,
1484 16, /* rightshift */
1485 1, /* size (0 = byte, 1 = short, 2 = long) */
1486 16, /* bitsize */
1487 FALSE, /* pc_relative */
1488 0, /* bitpos */
1489 complain_overflow_dont, /* complain_on_overflow */
1490 ppc64_elf_unhandled_reloc, /* special_function */
1491 "R_PPC64_TPREL16_HI", /* name */
1492 FALSE, /* partial_inplace */
1493 0, /* src_mask */
1494 0xffff, /* dst_mask */
1495 FALSE), /* pcrel_offset */
1496
1497 /* Like TPREL16_HI, but adjust for low 16 bits. */
1498 HOWTO (R_PPC64_TPREL16_HA,
1499 16, /* rightshift */
1500 1, /* size (0 = byte, 1 = short, 2 = long) */
1501 16, /* bitsize */
1502 FALSE, /* pc_relative */
1503 0, /* bitpos */
1504 complain_overflow_dont, /* complain_on_overflow */
1505 ppc64_elf_unhandled_reloc, /* special_function */
1506 "R_PPC64_TPREL16_HA", /* name */
1507 FALSE, /* partial_inplace */
1508 0, /* src_mask */
1509 0xffff, /* dst_mask */
1510 FALSE), /* pcrel_offset */
1511
1512 /* Like TPREL16_HI, but next higher group of 16 bits. */
1513 HOWTO (R_PPC64_TPREL16_HIGHER,
1514 32, /* rightshift */
1515 1, /* size (0 = byte, 1 = short, 2 = long) */
1516 16, /* bitsize */
1517 FALSE, /* pc_relative */
1518 0, /* bitpos */
1519 complain_overflow_dont, /* complain_on_overflow */
1520 ppc64_elf_unhandled_reloc, /* special_function */
1521 "R_PPC64_TPREL16_HIGHER", /* name */
1522 FALSE, /* partial_inplace */
1523 0, /* src_mask */
1524 0xffff, /* dst_mask */
1525 FALSE), /* pcrel_offset */
1526
1527 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1528 HOWTO (R_PPC64_TPREL16_HIGHERA,
1529 32, /* rightshift */
1530 1, /* size (0 = byte, 1 = short, 2 = long) */
1531 16, /* bitsize */
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
1534 complain_overflow_dont, /* complain_on_overflow */
1535 ppc64_elf_unhandled_reloc, /* special_function */
1536 "R_PPC64_TPREL16_HIGHERA", /* name */
1537 FALSE, /* partial_inplace */
1538 0, /* src_mask */
1539 0xffff, /* dst_mask */
1540 FALSE), /* pcrel_offset */
1541
1542 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1543 HOWTO (R_PPC64_TPREL16_HIGHEST,
1544 48, /* rightshift */
1545 1, /* size (0 = byte, 1 = short, 2 = long) */
1546 16, /* bitsize */
1547 FALSE, /* pc_relative */
1548 0, /* bitpos */
1549 complain_overflow_dont, /* complain_on_overflow */
1550 ppc64_elf_unhandled_reloc, /* special_function */
1551 "R_PPC64_TPREL16_HIGHEST", /* name */
1552 FALSE, /* partial_inplace */
1553 0, /* src_mask */
1554 0xffff, /* dst_mask */
1555 FALSE), /* pcrel_offset */
1556
1557 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1558 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1559 48, /* rightshift */
1560 1, /* size (0 = byte, 1 = short, 2 = long) */
1561 16, /* bitsize */
1562 FALSE, /* pc_relative */
1563 0, /* bitpos */
1564 complain_overflow_dont, /* complain_on_overflow */
1565 ppc64_elf_unhandled_reloc, /* special_function */
1566 "R_PPC64_TPREL16_HIGHESTA", /* name */
1567 FALSE, /* partial_inplace */
1568 0, /* src_mask */
1569 0xffff, /* dst_mask */
1570 FALSE), /* pcrel_offset */
1571
1572 /* Like TPREL16, but for insns with a DS field. */
1573 HOWTO (R_PPC64_TPREL16_DS,
1574 0, /* rightshift */
1575 1, /* size (0 = byte, 1 = short, 2 = long) */
1576 16, /* bitsize */
1577 FALSE, /* pc_relative */
1578 0, /* bitpos */
1579 complain_overflow_signed, /* complain_on_overflow */
1580 ppc64_elf_unhandled_reloc, /* special_function */
1581 "R_PPC64_TPREL16_DS", /* name */
1582 FALSE, /* partial_inplace */
1583 0, /* src_mask */
1584 0xfffc, /* dst_mask */
1585 FALSE), /* pcrel_offset */
1586
1587 /* Like TPREL16_DS, but no overflow. */
1588 HOWTO (R_PPC64_TPREL16_LO_DS,
1589 0, /* rightshift */
1590 1, /* size (0 = byte, 1 = short, 2 = long) */
1591 16, /* bitsize */
1592 FALSE, /* pc_relative */
1593 0, /* bitpos */
1594 complain_overflow_dont, /* complain_on_overflow */
1595 ppc64_elf_unhandled_reloc, /* special_function */
1596 "R_PPC64_TPREL16_LO_DS", /* name */
1597 FALSE, /* partial_inplace */
1598 0, /* src_mask */
1599 0xfffc, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1601
1602 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1603 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1604 to the first entry relative to the TOC base (r2). */
1605 HOWTO (R_PPC64_GOT_TLSGD16,
1606 0, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 16, /* bitsize */
1609 FALSE, /* pc_relative */
1610 0, /* bitpos */
1611 complain_overflow_signed, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc, /* special_function */
1613 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1614 FALSE, /* partial_inplace */
5bd4f169
AM
1615 0, /* src_mask */
1616 0xffff, /* dst_mask */
b34976b6 1617 FALSE), /* pcrel_offset */
5bd4f169 1618
411e1bfb
AM
1619 /* Like GOT_TLSGD16, but no overflow. */
1620 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM
1621 0, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 16, /* bitsize */
b34976b6 1624 FALSE, /* pc_relative */
5bd4f169
AM
1625 0, /* bitpos */
1626 complain_overflow_dont, /* complain_on_overflow */
805fc799 1627 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1628 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1629 FALSE, /* partial_inplace */
5bd4f169
AM
1630 0, /* src_mask */
1631 0xffff, /* dst_mask */
b34976b6 1632 FALSE), /* pcrel_offset */
5bd4f169 1633
411e1bfb
AM
1634 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM
1636 16, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 16, /* bitsize */
b34976b6 1639 FALSE, /* pc_relative */
5bd4f169
AM
1640 0, /* bitpos */
1641 complain_overflow_dont, /* complain_on_overflow */
805fc799 1642 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1643 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1644 FALSE, /* partial_inplace */
5bd4f169
AM
1645 0, /* src_mask */
1646 0xffff, /* dst_mask */
b34976b6 1647 FALSE), /* pcrel_offset */
5bd4f169 1648
411e1bfb
AM
1649 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM
1651 16, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 16, /* bitsize */
b34976b6 1654 FALSE, /* pc_relative */
5bd4f169 1655 0, /* bitpos */
411e1bfb 1656 complain_overflow_dont, /* complain_on_overflow */
805fc799 1657 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1658 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1659 FALSE, /* partial_inplace */
5bd4f169
AM
1660 0, /* src_mask */
1661 0xffff, /* dst_mask */
b34976b6 1662 FALSE), /* pcrel_offset */
5bd4f169 1663
411e1bfb
AM
1664 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1665 with values (sym+add)@dtpmod and zero, and computes the offset to the
1666 first entry relative to the TOC base (r2). */
1667 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM
1668 0, /* rightshift */
1669 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 16, /* bitsize */
b34976b6 1671 FALSE, /* pc_relative */
5bd4f169 1672 0, /* bitpos */
411e1bfb
AM
1673 complain_overflow_signed, /* complain_on_overflow */
1674 ppc64_elf_unhandled_reloc, /* special_function */
1675 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1676 FALSE, /* partial_inplace */
d006db6c 1677 0, /* src_mask */
411e1bfb 1678 0xffff, /* dst_mask */
b34976b6 1679 FALSE), /* pcrel_offset */
5bd4f169 1680
411e1bfb
AM
1681 /* Like GOT_TLSLD16, but no overflow. */
1682 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM
1683 0, /* rightshift */
1684 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 16, /* bitsize */
b34976b6 1686 FALSE, /* pc_relative */
5bd4f169 1687 0, /* bitpos */
411e1bfb
AM
1688 complain_overflow_dont, /* complain_on_overflow */
1689 ppc64_elf_unhandled_reloc, /* special_function */
1690 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1691 FALSE, /* partial_inplace */
d006db6c 1692 0, /* src_mask */
411e1bfb 1693 0xffff, /* dst_mask */
b34976b6 1694 FALSE), /* pcrel_offset */
5bd4f169 1695
411e1bfb
AM
1696 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1697 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1698 16, /* rightshift */
5bd4f169
AM
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 16, /* bitsize */
b34976b6 1701 FALSE, /* pc_relative */
5bd4f169 1702 0, /* bitpos */
411e1bfb 1703 complain_overflow_dont, /* complain_on_overflow */
805fc799 1704 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1705 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1706 FALSE, /* partial_inplace */
d006db6c 1707 0, /* src_mask */
411e1bfb 1708 0xffff, /* dst_mask */
b34976b6 1709 FALSE), /* pcrel_offset */
5bd4f169 1710
411e1bfb
AM
1711 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1712 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1713 16, /* rightshift */
5bd4f169
AM
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 16, /* bitsize */
b34976b6 1716 FALSE, /* pc_relative */
5bd4f169
AM
1717 0, /* bitpos */
1718 complain_overflow_dont, /* complain_on_overflow */
805fc799 1719 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1720 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1721 FALSE, /* partial_inplace */
d006db6c 1722 0, /* src_mask */
411e1bfb 1723 0xffff, /* dst_mask */
b34976b6 1724 FALSE), /* pcrel_offset */
5bd4f169 1725
411e1bfb
AM
1726 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1727 the offset to the entry relative to the TOC base (r2). */
1728 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM
1729 0, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 16, /* bitsize */
b34976b6 1732 FALSE, /* pc_relative */
5bd4f169 1733 0, /* bitpos */
411e1bfb 1734 complain_overflow_signed, /* complain_on_overflow */
805fc799 1735 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1736 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1737 FALSE, /* partial_inplace */
d006db6c 1738 0, /* src_mask */
5bd4f169 1739 0xfffc, /* dst_mask */
b34976b6 1740 FALSE), /* pcrel_offset */
5bd4f169 1741
411e1bfb
AM
1742 /* Like GOT_DTPREL16_DS, but no overflow. */
1743 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1744 0, /* rightshift */
c061c2d8
AM
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 16, /* bitsize */
b34976b6 1747 FALSE, /* pc_relative */
5bd4f169 1748 0, /* bitpos */
411e1bfb
AM
1749 complain_overflow_dont, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc, /* special_function */
1751 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1752 FALSE, /* partial_inplace */
d006db6c 1753 0, /* src_mask */
c061c2d8 1754 0xfffc, /* dst_mask */
b34976b6 1755 FALSE), /* pcrel_offset */
5bd4f169 1756
411e1bfb
AM
1757 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1758 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1759 16, /* rightshift */
5bd4f169
AM
1760 1, /* size (0 = byte, 1 = short, 2 = long) */
1761 16, /* bitsize */
b34976b6 1762 FALSE, /* pc_relative */
5bd4f169
AM
1763 0, /* bitpos */
1764 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1765 ppc64_elf_unhandled_reloc, /* special_function */
1766 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1767 FALSE, /* partial_inplace */
d006db6c 1768 0, /* src_mask */
411e1bfb 1769 0xffff, /* dst_mask */
b34976b6 1770 FALSE), /* pcrel_offset */
5bd4f169 1771
411e1bfb
AM
1772 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1773 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1774 16, /* rightshift */
1775 1, /* size (0 = byte, 1 = short, 2 = long) */
1776 16, /* bitsize */
1777 FALSE, /* pc_relative */
1778 0, /* bitpos */
1779 complain_overflow_dont, /* complain_on_overflow */
1780 ppc64_elf_unhandled_reloc, /* special_function */
1781 "R_PPC64_GOT_DTPREL16_HA", /* name */
1782 FALSE, /* partial_inplace */
1783 0, /* src_mask */
1784 0xffff, /* dst_mask */
1785 FALSE), /* pcrel_offset */
1786
1787 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1788 offset to the entry relative to the TOC base (r2). */
1789 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM
1790 0, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1792 16, /* bitsize */
b34976b6 1793 FALSE, /* pc_relative */
5bd4f169
AM
1794 0, /* bitpos */
1795 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM
1796 ppc64_elf_unhandled_reloc, /* special_function */
1797 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1798 FALSE, /* partial_inplace */
d006db6c 1799 0, /* src_mask */
ad8e1ba5 1800 0xfffc, /* dst_mask */
b34976b6 1801 FALSE), /* pcrel_offset */
5bd4f169 1802
411e1bfb
AM
1803 /* Like GOT_TPREL16_DS, but no overflow. */
1804 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM
1805 0, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1807 16, /* bitsize */
b34976b6 1808 FALSE, /* pc_relative */
5bd4f169
AM
1809 0, /* bitpos */
1810 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1811 ppc64_elf_unhandled_reloc, /* special_function */
1812 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1813 FALSE, /* partial_inplace */
d006db6c 1814 0, /* src_mask */
ad8e1ba5 1815 0xfffc, /* dst_mask */
b34976b6 1816 FALSE), /* pcrel_offset */
5bd4f169 1817
411e1bfb
AM
1818 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1819 HOWTO (R_PPC64_GOT_TPREL16_HI,
1820 16, /* rightshift */
5bd4f169
AM
1821 1, /* size (0 = byte, 1 = short, 2 = long) */
1822 16, /* bitsize */
b34976b6 1823 FALSE, /* pc_relative */
5bd4f169 1824 0, /* bitpos */
411e1bfb 1825 complain_overflow_dont, /* complain_on_overflow */
805fc799 1826 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1827 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1828 FALSE, /* partial_inplace */
d006db6c 1829 0, /* src_mask */
411e1bfb 1830 0xffff, /* dst_mask */
b34976b6 1831 FALSE), /* pcrel_offset */
5bd4f169 1832
411e1bfb
AM
1833 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1834 HOWTO (R_PPC64_GOT_TPREL16_HA,
1835 16, /* rightshift */
5bd4f169
AM
1836 1, /* size (0 = byte, 1 = short, 2 = long) */
1837 16, /* bitsize */
b34976b6 1838 FALSE, /* pc_relative */
5bd4f169
AM
1839 0, /* bitpos */
1840 complain_overflow_dont, /* complain_on_overflow */
805fc799 1841 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1842 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1843 FALSE, /* partial_inplace */
d006db6c 1844 0, /* src_mask */
411e1bfb 1845 0xffff, /* dst_mask */
b34976b6 1846 FALSE), /* pcrel_offset */
5bd4f169
AM
1847
1848 /* GNU extension to record C++ vtable hierarchy. */
1849 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1850 0, /* rightshift */
1851 0, /* size (0 = byte, 1 = short, 2 = long) */
1852 0, /* bitsize */
b34976b6 1853 FALSE, /* pc_relative */
5bd4f169
AM
1854 0, /* bitpos */
1855 complain_overflow_dont, /* complain_on_overflow */
1856 NULL, /* special_function */
1857 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 1858 FALSE, /* partial_inplace */
5bd4f169
AM
1859 0, /* src_mask */
1860 0, /* dst_mask */
b34976b6 1861 FALSE), /* pcrel_offset */
5bd4f169
AM
1862
1863 /* GNU extension to record C++ vtable member usage. */
1864 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1865 0, /* rightshift */
1866 0, /* size (0 = byte, 1 = short, 2 = long) */
1867 0, /* bitsize */
b34976b6 1868 FALSE, /* pc_relative */
5bd4f169
AM
1869 0, /* bitpos */
1870 complain_overflow_dont, /* complain_on_overflow */
1871 NULL, /* special_function */
1872 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 1873 FALSE, /* partial_inplace */
5bd4f169
AM
1874 0, /* src_mask */
1875 0, /* dst_mask */
b34976b6 1876 FALSE), /* pcrel_offset */
5bd4f169
AM
1877};
1878
1879\f
1880/* Initialize the ppc64_elf_howto_table, so that linear accesses can
1881 be done. */
1882
1883static void
4ce794b7 1884ppc_howto_init (void)
5bd4f169
AM
1885{
1886 unsigned int i, type;
1887
1888 for (i = 0;
1889 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1890 i++)
1891 {
1892 type = ppc64_elf_howto_raw[i].type;
1893 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1894 / sizeof (ppc64_elf_howto_table[0])));
1895 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1896 }
1897}
1898
1899static reloc_howto_type *
4ce794b7
AM
1900ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1901 bfd_reloc_code_real_type code)
5bd4f169 1902{
411e1bfb 1903 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM
1904
1905 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1906 /* Initialize howto table if needed. */
1907 ppc_howto_init ();
1908
4ce794b7 1909 switch (code)
5bd4f169
AM
1910 {
1911 default:
4ce794b7 1912 return NULL;
5bd4f169 1913
411e1bfb
AM
1914 case BFD_RELOC_NONE: r = R_PPC64_NONE;
1915 break;
1916 case BFD_RELOC_32: r = R_PPC64_ADDR32;
1917 break;
1918 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
1919 break;
1920 case BFD_RELOC_16: r = R_PPC64_ADDR16;
1921 break;
1922 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
1923 break;
1924 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
1925 break;
1926 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 1927 break;
411e1bfb 1928 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 1929 break;
411e1bfb 1930 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 1931 break;
411e1bfb 1932 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 1933 break;
411e1bfb 1934 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 1935 break;
411e1bfb 1936 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 1937 break;
411e1bfb 1938 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 1939 break;
411e1bfb 1940 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 1941 break;
411e1bfb 1942 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 1943 break;
411e1bfb 1944 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 1945 break;
411e1bfb 1946 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 1947 break;
411e1bfb 1948 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 1949 break;
411e1bfb 1950 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 1951 break;
411e1bfb 1952 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 1953 break;
411e1bfb 1954 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 1955 break;
411e1bfb 1956 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 1957 break;
411e1bfb 1958 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 1959 break;
411e1bfb 1960 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 1961 break;
411e1bfb 1962 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 1963 break;
411e1bfb 1964 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 1965 break;
411e1bfb 1966 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 1967 break;
411e1bfb 1968 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 1969 break;
411e1bfb 1970 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 1971 break;
411e1bfb 1972 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 1973 break;
411e1bfb 1974 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 1975 break;
411e1bfb 1976 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 1977 break;
411e1bfb 1978 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 1979 break;
411e1bfb 1980 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 1981 break;
411e1bfb 1982 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 1983 break;
411e1bfb 1984 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 1985 break;
411e1bfb 1986 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 1987 break;
411e1bfb 1988 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 1989 break;
411e1bfb 1990 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 1991 break;
411e1bfb 1992 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 1993 break;
411e1bfb 1994 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 1995 break;
411e1bfb 1996 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 1997 break;
411e1bfb 1998 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 1999 break;
411e1bfb 2000 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2001 break;
411e1bfb 2002 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2003 break;
411e1bfb 2004 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2005 break;
411e1bfb 2006 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2007 break;
411e1bfb 2008 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2009 break;
411e1bfb 2010 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2011 break;
411e1bfb 2012 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2013 break;
411e1bfb 2014 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2015 break;
411e1bfb 2016 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2017 break;
411e1bfb 2018 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2019 break;
411e1bfb 2020 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2021 break;
411e1bfb 2022 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2023 break;
411e1bfb 2024 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2025 break;
411e1bfb 2026 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2027 break;
411e1bfb 2028 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2029 break;
411e1bfb 2030 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2031 break;
411e1bfb 2032 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2033 break;
411e1bfb 2034 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2035 break;
411e1bfb 2036 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2037 break;
411e1bfb 2038 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2039 break;
411e1bfb 2040 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2041 break;
411e1bfb 2042 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2043 break;
411e1bfb 2044 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2045 break;
411e1bfb
AM
2046 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2047 break;
2048 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2049 break;
2050 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2051 break;
2052 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2053 break;
2054 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2055 break;
2056 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2057 break;
2058 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2059 break;
2060 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2061 break;
2062 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2063 break;
2064 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2065 break;
2066 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2067 break;
2068 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2069 break;
2070 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2071 break;
2072 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2073 break;
2074 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2075 break;
2076 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2077 break;
2078 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2079 break;
2080 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2081 break;
2082 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2083 break;
2084 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2085 break;
2086 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2087 break;
2088 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2089 break;
2090 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2091 break;
2092 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2093 break;
2094 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2095 break;
2096 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2097 break;
2098 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2099 break;
2100 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2101 break;
2102 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2103 break;
2104 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2105 break;
2106 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2107 break;
2108 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2109 break;
2110 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2111 break;
2112 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2113 break;
2114 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM
2115 break;
2116 }
2117
4ce794b7 2118 return ppc64_elf_howto_table[r];
5bd4f169
AM
2119};
2120
157090f7
AM
2121static reloc_howto_type *
2122ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2123 const char *r_name)
2124{
2125 unsigned int i;
2126
2127 for (i = 0;
2128 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2129 i++)
2130 if (ppc64_elf_howto_raw[i].name != NULL
2131 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2132 return &ppc64_elf_howto_raw[i];
2133
2134 return NULL;
2135}
2136
5bd4f169
AM
2137/* Set the howto pointer for a PowerPC ELF reloc. */
2138
2139static void
4ce794b7
AM
2140ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2141 Elf_Internal_Rela *dst)
5bd4f169 2142{
65f38f15
AM
2143 unsigned int type;
2144
ef60b7ff 2145 /* Initialize howto table if needed. */
5bd4f169 2146 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
2147 ppc_howto_init ();
2148
65f38f15 2149 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ
2150 if (type >= (sizeof (ppc64_elf_howto_table)
2151 / sizeof (ppc64_elf_howto_table[0])))
2152 {
2153 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC
2154 abfd, (int) type);
2155 type = R_PPC64_NONE;
d0fb9a8d 2156 }
65f38f15 2157 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM
2158}
2159
04c9666a 2160/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM
2161
2162static bfd_reloc_status_type
4ce794b7
AM
2163ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2164 void *data, asection *input_section,
2165 bfd *output_bfd, char **error_message)
5bd4f169 2166{
805fc799
AM
2167 /* If this is a relocatable link (output_bfd test tells us), just
2168 call the generic function. Any adjustment will be done at final
2169 link time. */
2170 if (output_bfd != NULL)
cedb70c5 2171 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2172 input_section, output_bfd, error_message);
2173
2174 /* Adjust the addend for sign extension of the low 16 bits.
2175 We won't actually be using the low 16 bits, so trashing them
2176 doesn't matter. */
2177 reloc_entry->addend += 0x8000;
2178 return bfd_reloc_continue;
2179}
5bd4f169 2180
2441e016
AM
2181static bfd_reloc_status_type
2182ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2183 void *data, asection *input_section,
2184 bfd *output_bfd, char **error_message)
2185{
2186 if (output_bfd != NULL)
2187 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2188 input_section, output_bfd, error_message);
2189
699733f6
AM
2190 if (strcmp (symbol->section->name, ".opd") == 0
2191 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM
2192 {
2193 bfd_vma dest = opd_entry_value (symbol->section,
2194 symbol->value + reloc_entry->addend,
2195 NULL, NULL);
2196 if (dest != (bfd_vma) -1)
2197 reloc_entry->addend = dest - (symbol->value
2198 + symbol->section->output_section->vma
2199 + symbol->section->output_offset);
2200 }
2201 return bfd_reloc_continue;
2202}
2203
805fc799 2204static bfd_reloc_status_type
4ce794b7
AM
2205ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2206 void *data, asection *input_section,
2207 bfd *output_bfd, char **error_message)
805fc799
AM
2208{
2209 long insn;
04c9666a 2210 enum elf_ppc64_reloc_type r_type;
805fc799
AM
2211 bfd_size_type octets;
2212 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 2213 bfd_boolean is_power4 = FALSE;
805fc799
AM
2214
2215 /* If this is a relocatable link (output_bfd test tells us), just
2216 call the generic function. Any adjustment will be done at final
2217 link time. */
5bd4f169 2218 if (output_bfd != NULL)
cedb70c5 2219 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2220 input_section, output_bfd, error_message);
2221
2222 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2223 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2224 insn &= ~(0x01 << 21);
4ce794b7 2225 r_type = reloc_entry->howto->type;
805fc799
AM
2226 if (r_type == R_PPC64_ADDR14_BRTAKEN
2227 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2228 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799
AM
2229
2230 if (is_power4)
5bd4f169 2231 {
805fc799
AM
2232 /* Set 'a' bit. This is 0b00010 in BO field for branch
2233 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2234 for branch on CTR insns (BO == 1a00t or 1a01t). */
2235 if ((insn & (0x14 << 21)) == (0x04 << 21))
2236 insn |= 0x02 << 21;
2237 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2238 insn |= 0x08 << 21;
2239 else
2441e016 2240 goto out;
5bd4f169 2241 }
805fc799
AM
2242 else
2243 {
2244 bfd_vma target = 0;
2245 bfd_vma from;
5bd4f169 2246
805fc799
AM
2247 if (!bfd_is_com_section (symbol->section))
2248 target = symbol->value;
2249 target += symbol->section->output_section->vma;
2250 target += symbol->section->output_offset;
2251 target += reloc_entry->addend;
5bd4f169 2252
805fc799
AM
2253 from = (reloc_entry->address
2254 + input_section->output_offset
2255 + input_section->output_section->vma);
5bd4f169 2256
805fc799
AM
2257 /* Invert 'y' bit if not the default. */
2258 if ((bfd_signed_vma) (target - from) < 0)
2259 insn ^= 0x01 << 21;
2260 }
4ce794b7 2261 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM
2262 out:
2263 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2264 input_section, output_bfd, error_message);
805fc799 2265}
5bd4f169 2266
805fc799 2267static bfd_reloc_status_type
4ce794b7
AM
2268ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2269 void *data, asection *input_section,
2270 bfd *output_bfd, char **error_message)
805fc799
AM
2271{
2272 /* If this is a relocatable link (output_bfd test tells us), just
2273 call the generic function. Any adjustment will be done at final
2274 link time. */
2275 if (output_bfd != NULL)
cedb70c5 2276 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2277 input_section, output_bfd, error_message);
5bd4f169 2278
805fc799
AM
2279 /* Subtract the symbol section base address. */
2280 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM
2281 return bfd_reloc_continue;
2282}
2283
805fc799 2284static bfd_reloc_status_type
4ce794b7
AM
2285ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2286 void *data, asection *input_section,
2287 bfd *output_bfd, char **error_message)
805fc799
AM
2288{
2289 /* If this is a relocatable link (output_bfd test tells us), just
2290 call the generic function. Any adjustment will be done at final
2291 link time. */
2292 if (output_bfd != NULL)
cedb70c5 2293 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2294 input_section, output_bfd, error_message);
2295
2296 /* Subtract the symbol section base address. */
2297 reloc_entry->addend -= symbol->section->output_section->vma;
2298
2299 /* Adjust the addend for sign extension of the low 16 bits. */
2300 reloc_entry->addend += 0x8000;
2301 return bfd_reloc_continue;
2302}
2303
2304static bfd_reloc_status_type
4ce794b7
AM
2305ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2306 void *data, asection *input_section,
2307 bfd *output_bfd, char **error_message)
805fc799
AM
2308{
2309 bfd_vma TOCstart;
2310
2311 /* If this is a relocatable link (output_bfd test tells us), just
2312 call the generic function. Any adjustment will be done at final
2313 link time. */
2314 if (output_bfd != NULL)
cedb70c5 2315 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2316 input_section, output_bfd, error_message);
2317
2318 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2319 if (TOCstart == 0)
2320 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2321
2322 /* Subtract the TOC base address. */
2323 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2324 return bfd_reloc_continue;
2325}
2326
2327static bfd_reloc_status_type
4ce794b7
AM
2328ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2329 void *data, asection *input_section,
2330 bfd *output_bfd, char **error_message)
805fc799
AM
2331{
2332 bfd_vma TOCstart;
2333
2334 /* If this is a relocatable link (output_bfd test tells us), just
2335 call the generic function. Any adjustment will be done at final
2336 link time. */
2337 if (output_bfd != NULL)
cedb70c5 2338 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2339 input_section, output_bfd, error_message);
2340
2341 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2342 if (TOCstart == 0)
2343 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2344
2345 /* Subtract the TOC base address. */
2346 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2347
2348 /* Adjust the addend for sign extension of the low 16 bits. */
2349 reloc_entry->addend += 0x8000;
2350 return bfd_reloc_continue;
2351}
2352
2353static bfd_reloc_status_type
4ce794b7
AM
2354ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2355 void *data, asection *input_section,
2356 bfd *output_bfd, char **error_message)
805fc799
AM
2357{
2358 bfd_vma TOCstart;
2359 bfd_size_type octets;
2360
2361 /* If this is a relocatable link (output_bfd test tells us), just
2362 call the generic function. Any adjustment will be done at final
2363 link time. */
2364 if (output_bfd != NULL)
cedb70c5 2365 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2366 input_section, output_bfd, error_message);
2367
2368 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2369 if (TOCstart == 0)
2370 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2371
2372 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2373 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2374 return bfd_reloc_ok;
2375}
2376
2377static bfd_reloc_status_type
4ce794b7
AM
2378ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2379 void *data, asection *input_section,
2380 bfd *output_bfd, char **error_message)
805fc799
AM
2381{
2382 /* If this is a relocatable link (output_bfd test tells us), just
2383 call the generic function. Any adjustment will be done at final
2384 link time. */
2385 if (output_bfd != NULL)
cedb70c5 2386 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2387 input_section, output_bfd, error_message);
2388
2389 if (error_message != NULL)
2390 {
2391 static char buf[60];
2392 sprintf (buf, "generic linker can't handle %s",
2393 reloc_entry->howto->name);
2394 *error_message = buf;
2395 }
2396 return bfd_reloc_dangerous;
2397}
2398
e717da7e
AM
2399struct ppc64_elf_obj_tdata
2400{
2401 struct elf_obj_tdata elf;
2402
2403 /* Shortcuts to dynamic linker sections. */
2404 asection *got;
2405 asection *relgot;
2406
b3fac117
AM
2407 /* Used during garbage collection. We attach global symbols defined
2408 on removed .opd entries to this section so that the sym is removed. */
2409 asection *deleted_section;
81688140 2410
e717da7e
AM
2411 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2412 sections means we potentially need one of these for each input bfd. */
2413 union {
2414 bfd_signed_vma refcount;
2415 bfd_vma offset;
2416 } tlsld_got;
8860955f
AM
2417
2418 /* A copy of relocs before they are modified for --emit-relocs. */
2419 Elf_Internal_Rela *opd_relocs;
e717da7e
AM
2420};
2421
2422#define ppc64_elf_tdata(bfd) \
2423 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2424
2425#define ppc64_tlsld_got(bfd) \
2426 (&ppc64_elf_tdata (bfd)->tlsld_got)
2427
0c8d6e5c
AM
2428#define is_ppc64_elf(bfd) \
2429 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2430 && elf_object_id (bfd) == PPC64_ELF_TDATA)
2431
e717da7e
AM
2432/* Override the generic function because we store some extras. */
2433
2434static bfd_boolean
2435ppc64_elf_mkobject (bfd *abfd)
2436{
0ffa91dd
NC
2437 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
2438 PPC64_ELF_TDATA);
e717da7e
AM
2439}
2440
feee612b
AM
2441/* Fix bad default arch selected for a 64 bit input bfd when the
2442 default is 32 bit. */
2443
b34976b6 2444static bfd_boolean
4ce794b7 2445ppc64_elf_object_p (bfd *abfd)
feee612b
AM
2446{
2447 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2448 {
2449 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2450
2451 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2452 {
2453 /* Relies on arch after 32 bit default being 64 bit default. */
2454 abfd->arch_info = abfd->arch_info->next;
2455 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2456 }
2457 }
b34976b6 2458 return TRUE;
feee612b
AM
2459}
2460
d37c89e5
AM
2461/* Support for core dump NOTE sections. */
2462
2463static bfd_boolean
2464ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2465{
eea6121a 2466 size_t offset, size;
d37c89e5
AM
2467
2468 if (note->descsz != 504)
2469 return FALSE;
2470
2471 /* pr_cursig */
2472 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2473
2474 /* pr_pid */
2475 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2476
2477 /* pr_reg */
2478 offset = 112;
eea6121a 2479 size = 384;
d37c89e5
AM
2480
2481 /* Make a ".reg/999" section. */
2482 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2483 size, note->descpos + offset);
d37c89e5
AM
2484}
2485
2486static bfd_boolean
2487ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2488{
2489 if (note->descsz != 136)
2490 return FALSE;
2491
2492 elf_tdata (abfd)->core_program
2493 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2494 elf_tdata (abfd)->core_command
2495 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2496
2497 return TRUE;
2498}
2499
183e98be
AM
2500static char *
2501ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2502 ...)
2503{
2504 switch (note_type)
2505 {
2506 default:
2507 return NULL;
2508
2509 case NT_PRPSINFO:
2510 {
2511 char data[136];
2512 va_list ap;
2513
2514 va_start (ap, note_type);
2515 memset (data, 0, 40);
2516 strncpy (data + 40, va_arg (ap, const char *), 16);
2517 strncpy (data + 56, va_arg (ap, const char *), 80);
2518 va_end (ap);
2519 return elfcore_write_note (abfd, buf, bufsiz,
2520 "CORE", note_type, data, sizeof (data));
2521 }
2522
2523 case NT_PRSTATUS:
2524 {
2525 char data[504];
2526 va_list ap;
2527 long pid;
2528 int cursig;
2529 const void *greg;
2530
2531 va_start (ap, note_type);
2532 memset (data, 0, 112);
2533 pid = va_arg (ap, long);
2534 bfd_put_32 (abfd, pid, data + 32);
2535 cursig = va_arg (ap, int);
2536 bfd_put_16 (abfd, cursig, data + 12);
2537 greg = va_arg (ap, const void *);
2538 memcpy (data + 112, greg, 384);
2539 memset (data + 496, 0, 8);
2540 va_end (ap);
2541 return elfcore_write_note (abfd, buf, bufsiz,
2542 "CORE", note_type, data, sizeof (data));
2543 }
2544 }
2545}
2546
5bd4f169
AM
2547/* Merge backend specific data from an object file to the output
2548 object file when linking. */
2f6d9989 2549
b34976b6 2550static bfd_boolean
4ce794b7 2551ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5bd4f169 2552{
5bd4f169
AM
2553 /* Check if we have the same endianess. */
2554 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
87e226ce 2555 && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN
5bd4f169
AM
2556 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
2557 {
2558 const char *msg;
2559
2560 if (bfd_big_endian (ibfd))
d003868e 2561 msg = _("%B: compiled for a big endian system "
4ce794b7 2562 "and target is little endian");
5bd4f169 2563 else
d003868e 2564 msg = _("%B: compiled for a little endian system "
4ce794b7 2565 "and target is big endian");
5bd4f169 2566
d003868e 2567 (*_bfd_error_handler) (msg, ibfd);
5bd4f169
AM
2568
2569 bfd_set_error (bfd_error_wrong_format);
b34976b6 2570 return FALSE;
5bd4f169
AM
2571 }
2572
b34976b6 2573 return TRUE;
5bd4f169 2574}
f0abc2a1 2575
5d35169e
AM
2576/* Add extra PPC sections. */
2577
b35d266b 2578static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2579{
0112cd26
NC
2580 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2581 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2582 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2583 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2584 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2585 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2586 { NULL, 0, 0, 0, 0 }
5d35169e
AM
2587};
2588
7c8fe5c4
AM
2589enum _ppc64_sec_type {
2590 sec_normal = 0,
2591 sec_opd = 1,
2592 sec_toc = 2
2593};
2594
f0abc2a1
AM
2595struct _ppc64_elf_section_data
2596{
2597 struct bfd_elf_section_data elf;
411e1bfb 2598
f0abc2a1
AM
2599 union
2600 {
74f0fb50
AM
2601 /* An array with one entry for each opd function descriptor. */
2602 struct _opd_sec_data
2603 {
2604 /* Points to the function code section for local opd entries. */
2605 asection **func_sec;
2606
2607 /* After editing .opd, adjust references to opd local syms. */
2608 long *adjust;
2609 } opd;
7c8fe5c4
AM
2610
2611 /* An array for toc sections, indexed by offset/8.
2612 Specifies the relocation symbol index used at a given toc offset. */
2613 unsigned *t_symndx;
2614 } u;
2615
2616 enum _ppc64_sec_type sec_type:2;
411e1bfb 2617
7c8fe5c4
AM
2618 /* Flag set when small branches are detected. Used to
2619 select suitable defaults for the stub group size. */
2620 unsigned int has_14bit_branch:1;
f0abc2a1
AM
2621};
2622
2623#define ppc64_elf_section_data(sec) \
411e1bfb 2624 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM
2625
2626static bfd_boolean
4ce794b7 2627ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2628{
f592407e
AM
2629 if (!sec->used_by_bfd)
2630 {
2631 struct _ppc64_elf_section_data *sdata;
2632 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2633
f592407e
AM
2634 sdata = bfd_zalloc (abfd, amt);
2635 if (sdata == NULL)
2636 return FALSE;
2637 sec->used_by_bfd = sdata;
2638 }
f0abc2a1
AM
2639
2640 return _bfd_elf_new_section_hook (abfd, sec);
2641}
4025353c 2642
74f0fb50 2643static struct _opd_sec_data *
4025353c
AM
2644get_opd_info (asection * sec)
2645{
2646 if (sec != NULL
2647 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 2648 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 2649 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM
2650 return NULL;
2651}
90e3cdf2
JJ
2652\f
2653/* Parameters for the qsort hook. */
2654static asection *synthetic_opd;
2655static bfd_boolean synthetic_relocatable;
2656
699733f6 2657/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ
2658
2659static int
2660compare_symbols (const void *ap, const void *bp)
2661{
2662 const asymbol *a = * (const asymbol **) ap;
2663 const asymbol *b = * (const asymbol **) bp;
2664
699733f6
AM
2665 /* Section symbols first. */
2666 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2667 return -1;
699733f6 2668 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ
2669 return 1;
2670
699733f6 2671 /* then .opd symbols. */
90e3cdf2
JJ
2672 if (a->section == synthetic_opd && b->section != synthetic_opd)
2673 return -1;
2674 if (a->section != synthetic_opd && b->section == synthetic_opd)
2675 return 1;
2676
699733f6 2677 /* then other code symbols. */
90e3cdf2
JJ
2678 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2679 == (SEC_CODE | SEC_ALLOC)
2680 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2681 != (SEC_CODE | SEC_ALLOC))
2682 return -1;
2683
2684 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2685 != (SEC_CODE | SEC_ALLOC)
2686 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2687 == (SEC_CODE | SEC_ALLOC))
2688 return 1;
2689
2690 if (synthetic_relocatable)
2691 {
2692 if (a->section->id < b->section->id)
2693 return -1;
2694
2695 if (a->section->id > b->section->id)
2696 return 1;
2697 }
2698
2699 if (a->value + a->section->vma < b->value + b->section->vma)
2700 return -1;
2701
2702 if (a->value + a->section->vma > b->value + b->section->vma)
2703 return 1;
2704
4d35a0aa
AM
2705 /* For syms with the same value, prefer strong dynamic global function
2706 syms over other syms. */
2707 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2708 return -1;
2709
2710 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2711 return 1;
2712
2713 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 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_WEAK) == 0 && (b->flags & BSF_WEAK) != 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_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2726 return -1;
2727
2728 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2729 return 1;
2730
90e3cdf2
JJ
2731 return 0;
2732}
2733
699733f6 2734/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2735
699733f6
AM
2736static asymbol *
2737sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2738{
699733f6 2739 long mid;
90e3cdf2 2740
699733f6
AM
2741 if (id == -1)
2742 {
2743 while (lo < hi)
2744 {
2745 mid = (lo + hi) >> 1;
2746 if (syms[mid]->value + syms[mid]->section->vma < value)
2747 lo = mid + 1;
2748 else if (syms[mid]->value + syms[mid]->section->vma > value)
2749 hi = mid;
2750 else
2751 return syms[mid];
2752 }
2753 }
2754 else
2755 {
2756 while (lo < hi)
2757 {
2758 mid = (lo + hi) >> 1;
2759 if (syms[mid]->section->id < id)
2760 lo = mid + 1;
2761 else if (syms[mid]->section->id > id)
2762 hi = mid;
2763 else if (syms[mid]->value < value)
2764 lo = mid + 1;
2765 else if (syms[mid]->value > value)
2766 hi = mid;
2767 else
2768 return syms[mid];
2769 }
2770 }
2771 return NULL;
90e3cdf2
JJ
2772}
2773
699733f6
AM
2774/* Create synthetic symbols, effectively restoring "dot-symbol" function
2775 entry syms. */
90e3cdf2
JJ
2776
2777static long
a7535cf3
AM
2778ppc64_elf_get_synthetic_symtab (bfd *abfd,
2779 long static_count, asymbol **static_syms,
2780 long dyn_count, asymbol **dyn_syms,
c9727e01 2781 asymbol **ret)
90e3cdf2
JJ
2782{
2783 asymbol *s;
699733f6
AM
2784 long i;
2785 long count;
90e3cdf2 2786 char *names;
a7535cf3 2787 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2788 asection *opd;
90e3cdf2 2789 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2790 asymbol **syms;
90e3cdf2
JJ
2791
2792 *ret = NULL;
2793
2794 opd = bfd_get_section_by_name (abfd, ".opd");
2795 if (opd == NULL)
2796 return 0;
2797
a7535cf3 2798 symcount = static_count;
c9727e01 2799 if (!relocatable)
a7535cf3 2800 symcount += dyn_count;
90e3cdf2 2801 if (symcount == 0)
c9727e01 2802 return 0;
90e3cdf2 2803
a7535cf3
AM
2804 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2805 if (syms == NULL)
7356fed5 2806 return -1;
a7535cf3
AM
2807
2808 if (!relocatable && static_count != 0 && dyn_count != 0)
2809 {
2810 /* Use both symbol tables. */
2811 memcpy (syms, static_syms, static_count * sizeof (*syms));
2812 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2813 }
2814 else if (!relocatable && static_count == 0)
2815 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2816 else
2817 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2818
90e3cdf2
JJ
2819 synthetic_opd = opd;
2820 synthetic_relocatable = relocatable;
595da8c5 2821 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2822
c9727e01
AM
2823 if (!relocatable && symcount > 1)
2824 {
2825 long j;
2826 /* Trim duplicate syms, since we may have merged the normal and
2827 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2828 different values, so trim any with the same value. */
c9727e01
AM
2829 for (i = 1, j = 1; i < symcount; ++i)
2830 if (syms[i - 1]->value + syms[i - 1]->section->vma
2831 != syms[i]->value + syms[i]->section->vma)
2832 syms[j++] = syms[i];
2833 symcount = j;
2834 }
2835
699733f6
AM
2836 i = 0;
2837 if (syms[i]->section == opd)
2838 ++i;
2839 codesecsym = i;
90e3cdf2 2840
699733f6
AM
2841 for (; i < symcount; ++i)
2842 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2843 != (SEC_CODE | SEC_ALLOC))
2844 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2845 break;
2846 codesecsymend = i;
90e3cdf2 2847
699733f6
AM
2848 for (; i < symcount; ++i)
2849 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2850 break;
2851 secsymend = i;
90e3cdf2 2852
699733f6
AM
2853 for (; i < symcount; ++i)
2854 if (syms[i]->section != opd)
2855 break;
2856 opdsymend = i;
90e3cdf2 2857
699733f6
AM
2858 for (; i < symcount; ++i)
2859 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2860 != (SEC_CODE | SEC_ALLOC))
2861 break;
2862 symcount = i;
2863
c9727e01 2864 count = 0;
699733f6 2865 if (opdsymend == secsymend)
c9727e01 2866 goto done;
90e3cdf2 2867
699733f6 2868 if (relocatable)
90e3cdf2 2869 {
699733f6
AM
2870 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2871 arelent *r;
2872 size_t size;
2873 long relcount;
90e3cdf2 2874
699733f6 2875 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2876 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2877 if (relcount == 0)
c9727e01 2878 goto done;
90e3cdf2 2879
7356fed5
AM
2880 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2881 {
2882 count = -1;
2883 goto done;
2884 }
2885
699733f6 2886 size = 0;
595da8c5 2887 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM
2888 {
2889 asymbol *sym;
90e3cdf2 2890
595da8c5 2891 while (r < opd->relocation + relcount
699733f6
AM
2892 && r->address < syms[i]->value + opd->vma)
2893 ++r;
90e3cdf2 2894
595da8c5 2895 if (r == opd->relocation + relcount)
699733f6 2896 break;
90e3cdf2 2897
699733f6
AM
2898 if (r->address != syms[i]->value + opd->vma)
2899 continue;
90e3cdf2 2900
699733f6
AM
2901 if (r->howto->type != R_PPC64_ADDR64)
2902 continue;
90e3cdf2 2903
699733f6
AM
2904 sym = *r->sym_ptr_ptr;
2905 if (!sym_exists_at (syms, opdsymend, symcount,
2906 sym->section->id, sym->value + r->addend))
2907 {
2908 ++count;
2909 size += sizeof (asymbol);
2910 size += strlen (syms[i]->name) + 2;
2911 }
2912 }
90e3cdf2 2913
699733f6
AM
2914 s = *ret = bfd_malloc (size);
2915 if (s == NULL)
2916 {
7356fed5 2917 count = -1;
c9727e01 2918 goto done;
699733f6 2919 }
90e3cdf2 2920
699733f6 2921 names = (char *) (s + count);
90e3cdf2 2922
595da8c5 2923 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2924 {
699733f6 2925 asymbol *sym;
90e3cdf2 2926
595da8c5 2927 while (r < opd->relocation + relcount
699733f6
AM
2928 && r->address < syms[i]->value + opd->vma)
2929 ++r;
90e3cdf2 2930
595da8c5 2931 if (r == opd->relocation + relcount)
699733f6
AM
2932 break;
2933
2934 if (r->address != syms[i]->value + opd->vma)
2935 continue;
2936
2937 if (r->howto->type != R_PPC64_ADDR64)
2938 continue;
90e3cdf2 2939
699733f6
AM
2940 sym = *r->sym_ptr_ptr;
2941 if (!sym_exists_at (syms, opdsymend, symcount,
2942 sym->section->id, sym->value + r->addend))
2943 {
2944 size_t len;
2945
2946 *s = *syms[i];
2947 s->section = sym->section;
2948 s->value = sym->value + r->addend;
2949 s->name = names;
2950 *names++ = '.';
2951 len = strlen (syms[i]->name);
2952 memcpy (names, syms[i]->name, len + 1);
2953 names += len + 1;
6f610d07
UW
2954 /* Have udata.p point back to the original symbol this
2955 synthetic symbol was derived from. */
2956 s->udata.p = syms[i];
699733f6
AM
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;
6f610d07
UW
3044 /* Have udata.p point back to the original symbol this
3045 synthetic symbol was derived from. */
3046 s->udata.p = syms[i];
699733f6 3047 s++;
90e3cdf2 3048 }
90e3cdf2 3049 }
699733f6 3050 free (contents);
90e3cdf2
JJ
3051 }
3052
c9727e01 3053 done:
a7535cf3 3054 free (syms);
90e3cdf2
JJ
3055 return count;
3056}
5bd4f169 3057\f
65f38f15
AM
3058/* The following functions are specific to the ELF linker, while
3059 functions above are used generally. Those named ppc64_elf_* are
3060 called by the main ELF linker code. They appear in this file more
3061 or less in the order in which they are called. eg.
3062 ppc64_elf_check_relocs is called early in the link process,
3063 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM
3064 called.
3065
3066 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3067 functions have both a function code symbol and a function descriptor
3068 symbol. A call to foo in a relocatable object file looks like:
3069
3070 . .text
3071 . x:
3072 . bl .foo
3073 . nop
3074
3075 The function definition in another object file might be:
3076
3077 . .section .opd
3078 . foo: .quad .foo
3079 . .quad .TOC.@tocbase
3080 . .quad 0
3081 .
3082 . .text
3083 . .foo: blr
3084
3085 When the linker resolves the call during a static link, the branch
3086 unsurprisingly just goes to .foo and the .opd information is unused.
3087 If the function definition is in a shared library, things are a little
3088 different: The call goes via a plt call stub, the opd information gets
3089 copied to the plt, and the linker patches the nop.
3090
3091 . x:
3092 . bl .foo_stub
3093 . ld 2,40(1)
3094 .
3095 .
3096 . .foo_stub:
3097 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3098 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM
3099 . std 2,40(1) # this is the general idea
3100 . ld 11,0(12)
3101 . ld 2,8(12)
3102 . mtctr 11
3103 . ld 11,16(12)
3104 . bctr
3105 .
3106 . .section .plt
3107 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3108
3109 The "reloc ()" notation is supposed to indicate that the linker emits
3110 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3111 copying.
3112
3113 What are the difficulties here? Well, firstly, the relocations
3114 examined by the linker in check_relocs are against the function code
3115 sym .foo, while the dynamic relocation in the plt is emitted against
3116 the function descriptor symbol, foo. Somewhere along the line, we need
3117 to carefully copy dynamic link information from one symbol to the other.
3118 Secondly, the generic part of the elf linker will make .foo a dynamic
3119 symbol as is normal for most other backends. We need foo dynamic
3120 instead, at least for an application final link. However, when
3121 creating a shared library containing foo, we need to have both symbols
3122 dynamic so that references to .foo are satisfied during the early
3123 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM
3124 definition from some other object, eg. a static library.
3125
3126 Update: As of August 2004, we support a new convention. Function
3127 calls may use the function descriptor symbol, ie. "bl foo". This
3128 behaves exactly as "bl .foo". */
65f38f15
AM
3129
3130/* The linker needs to keep track of the number of relocs that it
3131 decides to copy as dynamic relocs in check_relocs for each symbol.
3132 This is so that it can later discard them if they are found to be
3133 unnecessary. We store the information in a field extending the
3134 regular ELF linker hash table. */
3135
3136struct ppc_dyn_relocs
3137{
3138 struct ppc_dyn_relocs *next;
3139
3140 /* The input section of the reloc. */
3141 asection *sec;
3142
3143 /* Total number of relocs copied for the input section. */
3144 bfd_size_type count;
3145
3146 /* Number of pc-relative relocs copied for the input section. */
3147 bfd_size_type pc_count;
3148};
3149
411e1bfb
AM
3150/* Track GOT entries needed for a given symbol. We might need more
3151 than one got entry per symbol. */
3152struct got_entry
3153{
3154 struct got_entry *next;
3155
e7b938ca 3156 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM
3157 bfd_vma addend;
3158
e717da7e
AM
3159 /* Unlike other ELF targets, we use separate GOT entries for the same
3160 symbol referenced from different input files. This is to support
3161 automatic multiple TOC/GOT sections, where the TOC base can vary
102890f0
AM
3162 from one input file to another. FIXME: After group_sections we
3163 ought to merge entries within the group.
e717da7e
AM
3164
3165 Point to the BFD owning this GOT entry. */
3166 bfd *owner;
3167
3168 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3169 TLS_TPREL or TLS_DTPREL for tls entries. */
3170 char tls_type;
3171
e7b938ca 3172 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM
3173 union
3174 {
3175 bfd_signed_vma refcount;
3176 bfd_vma offset;
3177 } got;
411e1bfb
AM
3178};
3179
3180/* The same for PLT. */
3181struct plt_entry
3182{
3183 struct plt_entry *next;
3184
3185 bfd_vma addend;
3186
3187 union
3188 {
3189 bfd_signed_vma refcount;
3190 bfd_vma offset;
3191 } plt;
3192};
3193
65f38f15 3194/* Of those relocs that might be copied as dynamic relocs, this macro
58ac9f71
AM
3195 selects those that must be copied when linking a shared library,
3196 even when the symbol is local. */
65f38f15 3197
411e1bfb 3198#define MUST_BE_DYN_RELOC(RTYPE) \
805fc799
AM
3199 ((RTYPE) != R_PPC64_REL32 \
3200 && (RTYPE) != R_PPC64_REL64 \
04c9666a 3201 && (RTYPE) != R_PPC64_REL30)
65f38f15 3202
f4656909
AM
3203/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3204 copying dynamic variables from a shared lib into an app's dynbss
3205 section, and instead use a dynamic relocation to point into the
5d35169e
AM
3206 shared lib. With code that gcc generates, it's vital that this be
3207 enabled; In the PowerPC64 ABI, the address of a function is actually
3208 the address of a function descriptor, which resides in the .opd
3209 section. gcc uses the descriptor directly rather than going via the
3210 GOT as some other ABI's do, which means that initialized function
3211 pointers must reference the descriptor. Thus, a function pointer
3212 initialized to the address of a function in a shared library will
3213 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3214 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM
3215 presents a problem as a plt entry for that function is also
3216 initialized from the function descriptor symbol and the copy reloc
3217 may not be initialized first. */
a23b6845 3218#define ELIMINATE_COPY_RELOCS 1
f4656909 3219
721956f4
AM
3220/* Section name for stubs is the associated section name plus this
3221 string. */
3222#define STUB_SUFFIX ".stub"
3223
3224/* Linker stubs.
3225 ppc_stub_long_branch:
3226 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3227 destination, but a 24 bit branch in a stub section will reach.
3228 . b dest
3229
3230 ppc_stub_plt_branch:
3231 Similar to the above, but a 24 bit branch in the stub section won't
3232 reach its destination.
87e226ce
AM
3233 . addis %r12,%r2,xxx@toc@ha
3234 . ld %r11,xxx@toc@l(%r12)
721956f4
AM
3235 . mtctr %r11
3236 . bctr
3237
3238 ppc_stub_plt_call:
2c66dc6c
AM
3239 Used to call a function in a shared library. If it so happens that
3240 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3241 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3242 . addis %r12,%r2,xxx@toc@ha
721956f4 3243 . std %r2,40(%r1)
87e226ce 3244 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3245 . mtctr %r11
ac2df442 3246 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3247 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3248 . bctr
ad8e1ba5
AM
3249
3250 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3251 code to adjust the value and save r2 to support multiple toc sections.
3252 A ppc_stub_long_branch with an r2 offset looks like:
3253 . std %r2,40(%r1)
3254 . addis %r2,%r2,off@ha
3255 . addi %r2,%r2,off@l
3256 . b dest
3257
3258 A ppc_stub_plt_branch with an r2 offset looks like:
3259 . std %r2,40(%r1)
3260 . addis %r12,%r2,xxx@toc@ha
3261 . ld %r11,xxx@toc@l(%r12)
3262 . addis %r2,%r2,off@ha
3263 . addi %r2,%r2,off@l
3264 . mtctr %r11
3265 . bctr
ac2df442
AM
3266
3267 In cases where the "addis" instruction would add zero, the "addis" is
3268 omitted and following instructions modified slightly in some cases.
721956f4
AM
3269*/
3270
3271enum ppc_stub_type {
3272 ppc_stub_none,
3273 ppc_stub_long_branch,
ad8e1ba5 3274 ppc_stub_long_branch_r2off,
721956f4 3275 ppc_stub_plt_branch,
ad8e1ba5 3276 ppc_stub_plt_branch_r2off,
721956f4
AM
3277 ppc_stub_plt_call
3278};
3279
3280struct ppc_stub_hash_entry {
3281
3282 /* Base hash table entry structure. */
3283 struct bfd_hash_entry root;
3284
ad8e1ba5
AM
3285 enum ppc_stub_type stub_type;
3286
721956f4
AM
3287 /* The stub section. */
3288 asection *stub_sec;
3289
3290 /* Offset within stub_sec of the beginning of this stub. */
3291 bfd_vma stub_offset;
3292
3293 /* Given the symbol's value and its section we can determine its final
3294 value when building the stubs (so the stub knows where to jump. */
3295 bfd_vma target_value;
3296 asection *target_section;
3297
721956f4
AM
3298 /* The symbol table entry, if any, that this was derived from. */
3299 struct ppc_link_hash_entry *h;
3300
411e1bfb
AM
3301 /* And the reloc addend that this was derived from. */
3302 bfd_vma addend;
3303
721956f4
AM
3304 /* Where this stub is being called from, or, in the case of combined
3305 stub sections, the first input section in the group. */
3306 asection *id_sec;
3307};
3308
3309struct ppc_branch_hash_entry {
3310
3311 /* Base hash table entry structure. */
3312 struct bfd_hash_entry root;
3313
c456f082 3314 /* Offset within branch lookup table. */
721956f4
AM
3315 unsigned int offset;
3316
3317 /* Generation marker. */
3318 unsigned int iter;
3319};
65f38f15
AM
3320
3321struct ppc_link_hash_entry
3322{
3323 struct elf_link_hash_entry elf;
3324
b3fac117
AM
3325 union {
3326 /* A pointer to the most recently used stub hash entry against this
3327 symbol. */
3328 struct ppc_stub_hash_entry *stub_cache;
3329
3330 /* A pointer to the next symbol starting with a '.' */
3331 struct ppc_link_hash_entry *next_dot_sym;
3332 } u;
721956f4 3333
65f38f15
AM
3334 /* Track dynamic relocs copied for this symbol. */
3335 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3336
721956f4 3337 /* Link between function code and descriptor symbols. */
34814b9f 3338 struct ppc_link_hash_entry *oh;
721956f4 3339
e86ce104
AM
3340 /* Flag function code and descriptor symbols. */
3341 unsigned int is_func:1;
3342 unsigned int is_func_descriptor:1;
908b32fc 3343 unsigned int fake:1;
411e1bfb 3344
c5614fa4
AM
3345 /* Whether global opd/toc sym has been adjusted or not.
3346 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3347 should be set for all globals defined in any opd/toc section. */
754021d0
AM
3348 unsigned int adjust_done:1;
3349
99877b66
AM
3350 /* Set if we twiddled this symbol to weak at some stage. */
3351 unsigned int was_undefined:1;
3352
411e1bfb 3353 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM
3354 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3355 corresponding relocs are encountered during check_relocs.
3356 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3357 indicate the corresponding GOT entry type is not needed.
3358 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3359 a TPREL one. We use a separate flag rather than setting TPREL
3360 just for convenience in distinguishing the two cases. */
3361#define TLS_GD 1 /* GD reloc. */
3362#define TLS_LD 2 /* LD reloc. */
3363#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3364#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3365#define TLS_TLS 16 /* Any TLS reloc. */
3366#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3367#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3368 char tls_mask;
65f38f15
AM
3369};
3370
3371/* ppc64 ELF linker hash table. */
3372
3373struct ppc_link_hash_table
3374{
3375 struct elf_link_hash_table elf;
3376
721956f4
AM
3377 /* The stub hash table. */
3378 struct bfd_hash_table stub_hash_table;
3379
3380 /* Another hash table for plt_branch stubs. */
3381 struct bfd_hash_table branch_hash_table;
3382
3383 /* Linker stub bfd. */
3384 bfd *stub_bfd;
3385
3386 /* Linker call-backs. */
4ce794b7
AM
3387 asection * (*add_stub_section) (const char *, asection *);
3388 void (*layout_sections_again) (void);
721956f4
AM
3389
3390 /* Array to keep track of which stub sections have been created, and
3391 information on stub grouping. */
3392 struct map_stub {
3393 /* This is the section to which stubs in the group will be attached. */
3394 asection *link_sec;
3395 /* The stub section. */
3396 asection *stub_sec;
ad8e1ba5
AM
3397 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3398 bfd_vma toc_off;
721956f4
AM
3399 } *stub_group;
3400
ad8e1ba5
AM
3401 /* Temp used when calculating TOC pointers. */
3402 bfd_vma toc_curr;
3403
8f3bab57
AM
3404 /* Highest input section id. */
3405 int top_id;
3406
734b6cf9
AM
3407 /* Highest output section index. */
3408 int top_index;
3409
b3fac117
AM
3410 /* Used when adding symbols. */
3411 struct ppc_link_hash_entry *dot_syms;
3412
734b6cf9
AM
3413 /* List of input sections for each output section. */
3414 asection **input_list;
721956f4 3415
65f38f15 3416 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3417 asection *got;
4ce794b7
AM
3418 asection *plt;
3419 asection *relplt;
3420 asection *dynbss;
3421 asection *relbss;
3422 asection *glink;
82bd7b59 3423 asection *sfpr;
4ce794b7
AM
3424 asection *brlt;
3425 asection *relbrlt;
ec338859 3426
8387904d
AM
3427 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3428 struct ppc_link_hash_entry *tls_get_addr;
3429 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3430
9b5ecbd0
AM
3431 /* Statistics. */
3432 unsigned long stub_count[ppc_stub_plt_call];
3433
ee75fd95
AM
3434 /* Number of stubs against global syms. */
3435 unsigned long stub_globals;
3436
ad8e1ba5 3437 /* Set if we should emit symbols for stubs. */
99877b66 3438 unsigned int emit_stub_syms:1;
ad8e1ba5 3439
4c52953f
AM
3440 /* Support for multiple toc sections. */
3441 unsigned int no_multi_toc:1;
3442 unsigned int multi_toc_needed:1;
3443
5d1634d7 3444 /* Set on error. */
99877b66 3445 unsigned int stub_error:1;
721956f4 3446
99877b66
AM
3447 /* Temp used by ppc64_elf_check_directives. */
3448 unsigned int twiddled_syms:1;
721956f4
AM
3449
3450 /* Incremented every time we size stubs. */
3451 unsigned int stub_iteration;
5d1634d7 3452
ec338859
AM
3453 /* Small local sym to section mapping cache. */
3454 struct sym_sec_cache sym_sec;
65f38f15
AM
3455};
3456
4c52953f
AM
3457/* Rename some of the generic section flags to better document how they
3458 are used here. */
3459#define has_toc_reloc has_gp_reloc
3460#define makes_toc_func_call need_finalize_relax
3461#define call_check_in_progress reloc_done
3462
65f38f15
AM
3463/* Get the ppc64 ELF linker hash table from a link_info structure. */
3464
3465#define ppc_hash_table(p) \
3466 ((struct ppc_link_hash_table *) ((p)->hash))
3467
721956f4
AM
3468#define ppc_stub_hash_lookup(table, string, create, copy) \
3469 ((struct ppc_stub_hash_entry *) \
3470 bfd_hash_lookup ((table), (string), (create), (copy)))
3471
3472#define ppc_branch_hash_lookup(table, string, create, copy) \
3473 ((struct ppc_branch_hash_entry *) \
3474 bfd_hash_lookup ((table), (string), (create), (copy)))
3475
3476/* Create an entry in the stub hash table. */
3477
3478static struct bfd_hash_entry *
4ce794b7
AM
3479stub_hash_newfunc (struct bfd_hash_entry *entry,
3480 struct bfd_hash_table *table,
3481 const char *string)
721956f4
AM
3482{
3483 /* Allocate the structure if it has not already been allocated by a
3484 subclass. */
3485 if (entry == NULL)
3486 {
3487 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3488 if (entry == NULL)
3489 return entry;
3490 }
3491
3492 /* Call the allocation method of the superclass. */
3493 entry = bfd_hash_newfunc (entry, table, string);
3494 if (entry != NULL)
3495 {
3496 struct ppc_stub_hash_entry *eh;
3497
3498 /* Initialize the local fields. */
3499 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3500 eh->stub_type = ppc_stub_none;
721956f4
AM
3501 eh->stub_sec = NULL;
3502 eh->stub_offset = 0;
3503 eh->target_value = 0;
3504 eh->target_section = NULL;
721956f4
AM
3505 eh->h = NULL;
3506 eh->id_sec = NULL;
3507 }
3508
3509 return entry;
3510}
3511
3512/* Create an entry in the branch hash table. */
3513
3514static struct bfd_hash_entry *
4ce794b7
AM
3515branch_hash_newfunc (struct bfd_hash_entry *entry,
3516 struct bfd_hash_table *table,
3517 const char *string)
721956f4
AM
3518{
3519 /* Allocate the structure if it has not already been allocated by a
3520 subclass. */
3521 if (entry == NULL)
3522 {
3523 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3524 if (entry == NULL)
3525 return entry;
3526 }
3527
3528 /* Call the allocation method of the superclass. */
3529 entry = bfd_hash_newfunc (entry, table, string);
3530 if (entry != NULL)
3531 {
3532 struct ppc_branch_hash_entry *eh;
3533
3534 /* Initialize the local fields. */
3535 eh = (struct ppc_branch_hash_entry *) entry;
3536 eh->offset = 0;
3537 eh->iter = 0;
3538 }
3539
3540 return entry;
3541}
3542
65f38f15
AM
3543/* Create an entry in a ppc64 ELF linker hash table. */
3544
3545static struct bfd_hash_entry *
4ce794b7
AM
3546link_hash_newfunc (struct bfd_hash_entry *entry,
3547 struct bfd_hash_table *table,
3548 const char *string)
65f38f15
AM
3549{
3550 /* Allocate the structure if it has not already been allocated by a
3551 subclass. */
3552 if (entry == NULL)
3553 {
3554 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3555 if (entry == NULL)
3556 return entry;
3557 }
3558
3559 /* Call the allocation method of the superclass. */
3560 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3561 if (entry != NULL)
3562 {
3563 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3564
b3fac117 3565 memset (&eh->u.stub_cache, 0,
908b32fc 3566 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM
3567 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3568
3569 /* When making function calls, old ABI code references function entry
3570 points (dot symbols), while new ABI code references the function
3571 descriptor symbol. We need to make any combination of reference and
3572 definition work together, without breaking archive linking.
3573
3574 For a defined function "foo" and an undefined call to "bar":
3575 An old object defines "foo" and ".foo", references ".bar" (possibly
3576 "bar" too).
3577 A new object defines "foo" and references "bar".
3578
3579 A new object thus has no problem with its undefined symbols being
3580 satisfied by definitions in an old object. On the other hand, the
3581 old object won't have ".bar" satisfied by a new object.
3582
3583 Keep a list of newly added dot-symbols. */
3584
3585 if (string[0] == '.')
3586 {
3587 struct ppc_link_hash_table *htab;
3588
3589 htab = (struct ppc_link_hash_table *) table;
3590 eh->u.next_dot_sym = htab->dot_syms;
3591 htab->dot_syms = eh;
3592 }
65f38f15
AM
3593 }
3594
3595 return entry;
3596}
3597
3598/* Create a ppc64 ELF linker hash table. */
3599
3600static struct bfd_link_hash_table *
4ce794b7 3601ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM
3602{
3603 struct ppc_link_hash_table *htab;
3604 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3605
4ce794b7 3606 htab = bfd_zmalloc (amt);
65f38f15
AM
3607 if (htab == NULL)
3608 return NULL;
3609
66eb6687
AM
3610 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3611 sizeof (struct ppc_link_hash_entry)))
65f38f15 3612 {
e2d34d7d 3613 free (htab);
65f38f15
AM
3614 return NULL;
3615 }
3616
721956f4 3617 /* Init the stub hash table too. */
66eb6687
AM
3618 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3619 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM
3620 return NULL;
3621
3622 /* And the branch hash table. */
66eb6687
AM
3623 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3624 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM
3625 return NULL;
3626
3254fd24
AM
3627 /* Initializing two fields of the union is just cosmetic. We really
3628 only care about glist, but when compiled on a 32-bit host the
3629 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3630 debugger inspection of these fields look nicer. */
a6aa5195
AM
3631 htab->elf.init_got_refcount.refcount = 0;
3632 htab->elf.init_got_refcount.glist = NULL;
3633 htab->elf.init_plt_refcount.refcount = 0;
3634 htab->elf.init_plt_refcount.glist = NULL;
3635 htab->elf.init_got_offset.offset = 0;
3636 htab->elf.init_got_offset.glist = NULL;
3637 htab->elf.init_plt_offset.offset = 0;
3638 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3639
65f38f15
AM
3640 return &htab->elf.root;
3641}
3642
721956f4
AM
3643/* Free the derived linker hash table. */
3644
3645static void
4ce794b7 3646ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM
3647{
3648 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3649
3650 bfd_hash_table_free (&ret->stub_hash_table);
3651 bfd_hash_table_free (&ret->branch_hash_table);
3652 _bfd_generic_link_hash_table_free (hash);
3653}
3654
e717da7e
AM
3655/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3656
3657void
3658ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3659{
3660 struct ppc_link_hash_table *htab;
3661
3662 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3663
3664/* Always hook our dynamic sections into the first bfd, which is the
3665 linker created stub bfd. This ensures that the GOT header is at
3666 the start of the output TOC section. */
3667 htab = ppc_hash_table (info);
3668 htab->stub_bfd = abfd;
3669 htab->elf.dynobj = abfd;
3670}
3671
721956f4
AM
3672/* Build a name for an entry in the stub hash table. */
3673
3674static char *
4ce794b7
AM
3675ppc_stub_name (const asection *input_section,
3676 const asection *sym_sec,
3677 const struct ppc_link_hash_entry *h,
3678 const Elf_Internal_Rela *rel)
721956f4
AM
3679{
3680 char *stub_name;
3681 bfd_size_type len;
3682
3683 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3684 offsets from a sym as a branch target? In fact, we could
3685 probably assume the addend is always zero. */
3686 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3687
3688 if (h)
3689 {
3690 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3691 stub_name = bfd_malloc (len);
46de2a7c
AM
3692 if (stub_name == NULL)
3693 return stub_name;
3694
3695 sprintf (stub_name, "%08x.%s+%x",
3696 input_section->id & 0xffffffff,
3697 h->elf.root.root.string,
3698 (int) rel->r_addend & 0xffffffff);
721956f4
AM
3699 }
3700 else
3701 {
ad8e1ba5 3702 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3703 stub_name = bfd_malloc (len);
46de2a7c
AM
3704 if (stub_name == NULL)
3705 return stub_name;
3706
3707 sprintf (stub_name, "%08x.%x:%x+%x",
3708 input_section->id & 0xffffffff,
3709 sym_sec->id & 0xffffffff,
3710 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3711 (int) rel->r_addend & 0xffffffff);
721956f4 3712 }
ee75fd95
AM
3713 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3714 stub_name[len - 2] = 0;
721956f4
AM
3715 return stub_name;
3716}
3717
3718/* Look up an entry in the stub hash. Stub entries are cached because
3719 creating the stub name takes a bit of time. */
3720
3721static struct ppc_stub_hash_entry *
4ce794b7
AM
3722ppc_get_stub_entry (const asection *input_section,
3723 const asection *sym_sec,
039b3fef 3724 struct ppc_link_hash_entry *h,
4ce794b7
AM
3725 const Elf_Internal_Rela *rel,
3726 struct ppc_link_hash_table *htab)
721956f4
AM
3727{
3728 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM
3729 const asection *id_sec;
3730
3731 /* If this input section is part of a group of sections sharing one
3732 stub section, then use the id of the first section in the group.
3733 Stub names need to include a section id, as there may well be
3734 more than one stub used to reach say, printf, and we need to
3735 distinguish between them. */
3736 id_sec = htab->stub_group[input_section->id].link_sec;
3737
b3fac117
AM
3738 if (h != NULL && h->u.stub_cache != NULL
3739 && h->u.stub_cache->h == h
3740 && h->u.stub_cache->id_sec == id_sec)
721956f4 3741 {
b3fac117 3742 stub_entry = h->u.stub_cache;
721956f4
AM
3743 }
3744 else
3745 {
3746 char *stub_name;
3747
3748 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3749 if (stub_name == NULL)
3750 return NULL;
3751
3752 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3753 stub_name, FALSE, FALSE);
721956f4 3754 if (h != NULL)
b3fac117 3755 h->u.stub_cache = stub_entry;
721956f4
AM
3756
3757 free (stub_name);
3758 }
3759
3760 return stub_entry;
3761}
3762
3763/* Add a new stub entry to the stub hash. Not all fields of the new
3764 stub entry are initialised. */
3765
3766static struct ppc_stub_hash_entry *
4ce794b7
AM
3767ppc_add_stub (const char *stub_name,
3768 asection *section,
3769 struct ppc_link_hash_table *htab)
721956f4
AM
3770{
3771 asection *link_sec;
3772 asection *stub_sec;
3773 struct ppc_stub_hash_entry *stub_entry;
3774
3775 link_sec = htab->stub_group[section->id].link_sec;
3776 stub_sec = htab->stub_group[section->id].stub_sec;
3777 if (stub_sec == NULL)
3778 {
3779 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3780 if (stub_sec == NULL)
3781 {
d4c88bbb 3782 size_t namelen;
721956f4
AM
3783 bfd_size_type len;
3784 char *s_name;
3785
d4c88bbb
AM
3786 namelen = strlen (link_sec->name);
3787 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM
3788 s_name = bfd_alloc (htab->stub_bfd, len);
3789 if (s_name == NULL)
3790 return NULL;
3791
d4c88bbb
AM
3792 memcpy (s_name, link_sec->name, namelen);
3793 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM
3794 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3795 if (stub_sec == NULL)
3796 return NULL;
3797 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3798 }
3799 htab->stub_group[section->id].stub_sec = stub_sec;
3800 }
3801
3802 /* Enter this entry into the linker stub hash table. */
3803 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3804 TRUE, FALSE);
721956f4
AM
3805 if (stub_entry == NULL)
3806 {
d003868e
AM
3807 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3808 section->owner, stub_name);
721956f4
AM
3809 return NULL;
3810 }
3811
3812 stub_entry->stub_sec = stub_sec;
3813 stub_entry->stub_offset = 0;
3814 stub_entry->id_sec = link_sec;
3815 return stub_entry;
3816}
3817
82bd7b59
AM
3818/* Create sections for linker generated code. */
3819
b34976b6 3820static bfd_boolean
4ce794b7 3821create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM
3822{
3823 struct ppc_link_hash_table *htab;
3824 flagword flags;
3825
3826 htab = ppc_hash_table (info);
3827
3828 /* Create .sfpr for code to save and restore fp regs. */
3829 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
3830 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L
3831 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
3832 flags);
82bd7b59 3833 if (htab->sfpr == NULL
82bd7b59 3834 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 3835 return FALSE;
82bd7b59 3836
721956f4 3837 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L
3838 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
3839 flags);
4ce794b7 3840 if (htab->glink == NULL
ee4bf8d2 3841 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 3842 return FALSE;
82bd7b59 3843
c456f082 3844 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM
3845 flags = (SEC_ALLOC | SEC_LOAD
3846 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3847 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
3848 flags);
4ce794b7 3849 if (htab->brlt == NULL
4ce794b7 3850 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 3851 return FALSE;
721956f4 3852
e4e0193e 3853 if (!info->shared)
c456f082
AM
3854 return TRUE;
3855
e4e0193e
AM
3856 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
3857 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3858 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
3859 ".rela.branch_lt",
3860 flags);
c456f082
AM
3861 if (!htab->relbrlt
3862 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
3863 return FALSE;
3864
b34976b6 3865 return TRUE;
82bd7b59
AM
3866}
3867
e717da7e
AM
3868/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3869 not already done. */
65f38f15 3870
b34976b6 3871static bfd_boolean
e717da7e 3872create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 3873{
e717da7e
AM
3874 asection *got, *relgot;
3875 flagword flags;
3876 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 3877
0c8d6e5c 3878 if (!is_ppc64_elf (abfd))
0ffa91dd
NC
3879 return FALSE;
3880
4ce794b7 3881 if (!htab->got)
e717da7e
AM
3882 {
3883 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
3884 return FALSE;
3885
3886 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
3887 if (!htab->got)
3888 abort ();
3889 }
3890
3891 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3892 | SEC_LINKER_CREATED);
3893
c456f082 3894 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 3895 if (!got
e717da7e
AM
3896 || !bfd_set_section_alignment (abfd, got, 3))
3897 return FALSE;
65f38f15 3898
c456f082
AM
3899 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
3900 flags | SEC_READONLY);
e717da7e 3901 if (!relgot
e717da7e 3902 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 3903 return FALSE;
e717da7e
AM
3904
3905 ppc64_elf_tdata (abfd)->got = got;
3906 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 3907 return TRUE;
65f38f15 3908}
5bd4f169 3909
82bd7b59 3910/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 3911
b34976b6 3912static bfd_boolean
4ce794b7 3913ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 3914{
65f38f15 3915 struct ppc_link_hash_table *htab;
5bd4f169 3916
65f38f15 3917 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 3918 return FALSE;
65f38f15 3919
e717da7e
AM
3920 htab = ppc_hash_table (info);
3921 if (!htab->got)
3922 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM
3923 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
3924 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
3925 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 3926 if (!info->shared)
4ce794b7 3927 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 3928
e717da7e 3929 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 3930 || (!info->shared && !htab->relbss))
65f38f15
AM
3931 abort ();
3932
b34976b6 3933 return TRUE;
5bd4f169
AM
3934}
3935
40d16e0b
AM
3936/* Merge PLT info on FROM with that on TO. */
3937
3938static void
3939move_plt_plist (struct ppc_link_hash_entry *from,
3940 struct ppc_link_hash_entry *to)
3941{
3942 if (from->elf.plt.plist != NULL)
3943 {
3944 if (to->elf.plt.plist != NULL)
3945 {
3946 struct plt_entry **entp;
3947 struct plt_entry *ent;
3948
3949 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
3950 {
3951 struct plt_entry *dent;
3952
3953 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
3954 if (dent->addend == ent->addend)
3955 {
3956 dent->plt.refcount += ent->plt.refcount;
3957 *entp = ent->next;
3958 break;
3959 }
3960 if (dent == NULL)
3961 entp = &ent->next;
3962 }
3963 *entp = to->elf.plt.plist;
3964 }
3965
3966 to->elf.plt.plist = from->elf.plt.plist;
3967 from->elf.plt.plist = NULL;
3968 }
3969}
3970
65f38f15
AM
3971/* Copy the extra info we tack onto an elf_link_hash_entry. */
3972
3973static void
fcfa13d2
AM
3974ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
3975 struct elf_link_hash_entry *dir,
3976 struct elf_link_hash_entry *ind)
65f38f15
AM
3977{
3978 struct ppc_link_hash_entry *edir, *eind;
3979
3980 edir = (struct ppc_link_hash_entry *) dir;
3981 eind = (struct ppc_link_hash_entry *) ind;
3982
411e1bfb 3983 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 3984 if (eind->dyn_relocs != NULL)
65f38f15 3985 {
bbd7ec4a
AM
3986 if (edir->dyn_relocs != NULL)
3987 {
3988 struct ppc_dyn_relocs **pp;
3989 struct ppc_dyn_relocs *p;
3990
fcfa13d2 3991 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
3992 list. Merge any entries against the same section. */
3993 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3994 {
3995 struct ppc_dyn_relocs *q;
3996
3997 for (q = edir->dyn_relocs; q != NULL; q = q->next)
3998 if (q->sec == p->sec)
3999 {
4000 q->pc_count += p->pc_count;
4001 q->count += p->count;
4002 *pp = p->next;
4003 break;
4004 }
4005 if (q == NULL)
4006 pp = &p->next;
4007 }
4008 *pp = edir->dyn_relocs;
4009 }
4010
65f38f15
AM
4011 edir->dyn_relocs = eind->dyn_relocs;
4012 eind->dyn_relocs = NULL;
4013 }
65f38f15 4014
6349e628
AM
4015 edir->is_func |= eind->is_func;
4016 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4017 edir->tls_mask |= eind->tls_mask;
6349e628 4018
81848ca0 4019 /* If called to transfer flags for a weakdef during processing
f5385ebf 4020 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4021 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM
4022 if (!(ELIMINATE_COPY_RELOCS
4023 && eind->elf.root.type != bfd_link_hash_indirect
4024 && edir->elf.dynamic_adjusted))
4025 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4026
f5385ebf
AM
4027 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4028 edir->elf.ref_regular |= eind->elf.ref_regular;
4029 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4030 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM
4031
4032 /* If we were called to copy over info for a weak sym, that's all. */
4033 if (eind->elf.root.type != bfd_link_hash_indirect)
4034 return;
4035
81848ca0
AM
4036 /* Copy over got entries that we may have already seen to the
4037 symbol which just became indirect. */
411e1bfb
AM
4038 if (eind->elf.got.glist != NULL)
4039 {
4040 if (edir->elf.got.glist != NULL)
4041 {
4042 struct got_entry **entp;
4043 struct got_entry *ent;
4044
4045 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4046 {
4047 struct got_entry *dent;
4048
4049 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4050 if (dent->addend == ent->addend
e717da7e 4051 && dent->owner == ent->owner
411e1bfb
AM
4052 && dent->tls_type == ent->tls_type)
4053 {
4054 dent->got.refcount += ent->got.refcount;
4055 *entp = ent->next;
4056 break;
4057 }
4058 if (dent == NULL)
4059 entp = &ent->next;
4060 }
4061 *entp = edir->elf.got.glist;
4062 }
4063
4064 edir->elf.got.glist = eind->elf.got.glist;
4065 eind->elf.got.glist = NULL;
4066 }
4067
4068 /* And plt entries. */
40d16e0b 4069 move_plt_plist (eind, edir);
411e1bfb 4070
fcfa13d2 4071 if (eind->elf.dynindx != -1)
411e1bfb 4072 {
fcfa13d2
AM
4073 if (edir->elf.dynindx != -1)
4074 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4075 edir->elf.dynstr_index);
411e1bfb
AM
4076 edir->elf.dynindx = eind->elf.dynindx;
4077 edir->elf.dynstr_index = eind->elf.dynstr_index;
4078 eind->elf.dynindx = -1;
4079 eind->elf.dynstr_index = 0;
4080 }
411e1bfb
AM
4081}
4082
8387904d
AM
4083/* Find the function descriptor hash entry from the given function code
4084 hash entry FH. Link the entries via their OH fields. */
4085
4086static struct ppc_link_hash_entry *
4087get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4088{
4089 struct ppc_link_hash_entry *fdh = fh->oh;
4090
4091 if (fdh == NULL)
4092 {
4093 const char *fd_name = fh->elf.root.root.string + 1;
4094
4095 fdh = (struct ppc_link_hash_entry *)
4096 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4097 if (fdh != NULL)
4098 {
4099 fdh->is_func_descriptor = 1;
4100 fdh->oh = fh;
4101 fh->is_func = 1;
4102 fh->oh = fdh;
4103 }
4104 }
4105
4106 return fdh;
4107}
4108
bb700d78
AM
4109/* Make a fake function descriptor sym for the code sym FH. */
4110
4111static struct ppc_link_hash_entry *
4112make_fdh (struct bfd_link_info *info,
908b32fc 4113 struct ppc_link_hash_entry *fh)
bb700d78
AM
4114{
4115 bfd *abfd;
4116 asymbol *newsym;
4117 struct bfd_link_hash_entry *bh;
4118 struct ppc_link_hash_entry *fdh;
4119
4120 abfd = fh->elf.root.u.undef.abfd;
4121 newsym = bfd_make_empty_symbol (abfd);
4122 newsym->name = fh->elf.root.root.string + 1;
4123 newsym->section = bfd_und_section_ptr;
4124 newsym->value = 0;
908b32fc 4125 newsym->flags = BSF_WEAK;
bb700d78
AM
4126
4127 bh = NULL;
4128 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4129 newsym->flags, newsym->section,
4130 newsym->value, NULL, FALSE, FALSE,
4131 &bh))
4132 return NULL;
4133
4134 fdh = (struct ppc_link_hash_entry *) bh;
4135 fdh->elf.non_elf = 0;
908b32fc
AM
4136 fdh->fake = 1;
4137 fdh->is_func_descriptor = 1;
4138 fdh->oh = fh;
4139 fh->is_func = 1;
4140 fh->oh = fdh;
bb700d78
AM
4141 return fdh;
4142}
4143
8387904d
AM
4144/* Fix function descriptor symbols defined in .opd sections to be
4145 function type. */
555cd476
AM
4146
4147static bfd_boolean
b3fac117 4148ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM
4149 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4150 Elf_Internal_Sym *isym,
b3fac117 4151 const char **name ATTRIBUTE_UNUSED,
555cd476
AM
4152 flagword *flags ATTRIBUTE_UNUSED,
4153 asection **sec,
4154 bfd_vma *value ATTRIBUTE_UNUSED)
4155{
8843416a
AM
4156 if (*sec != NULL
4157 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4158 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4159
555cd476
AM
4160 return TRUE;
4161}
4162
8387904d 4163/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM
4164 inclusion of a new ABI object archive that defines "bar".
4165 NAME is a symbol defined in an archive. Return a symbol in the hash
4166 table that might be satisfied by the archive symbols. */
8387904d
AM
4167
4168static struct elf_link_hash_entry *
4169ppc64_elf_archive_symbol_lookup (bfd *abfd,
4170 struct bfd_link_info *info,
4171 const char *name)
4172{
4173 struct elf_link_hash_entry *h;
4174 char *dot_name;
4175 size_t len;
4176
4177 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM
4178 if (h != NULL
4179 /* Don't return this sym if it is a fake function descriptor
4180 created by add_symbol_adjust. */
4181 && !(h->root.type == bfd_link_hash_undefweak
4182 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM
4183 return h;
4184
4185 if (name[0] == '.')
4186 return h;
4187
4188 len = strlen (name);
4189 dot_name = bfd_alloc (abfd, len + 2);
4190 if (dot_name == NULL)
4191 return (struct elf_link_hash_entry *) 0 - 1;
4192 dot_name[0] = '.';
4193 memcpy (dot_name + 1, name, len + 1);
4194 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4195 bfd_release (abfd, dot_name);
4196 return h;
4197}
4198
4199/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM
4200 new ABI object defines "bar". Well, at least, undefined dot symbols
4201 are made weak. This stops later archive searches from including an
4202 object if we already have a function descriptor definition. It also
35b0ce59
AM
4203 prevents the linker complaining about undefined symbols.
4204 We also check and correct mismatched symbol visibility here. The
4205 most restrictive visibility of the function descriptor and the
4206 function entry symbol is used. */
8387904d
AM
4207
4208static bfd_boolean
b3fac117 4209add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4210{
8387904d
AM
4211 struct ppc_link_hash_table *htab;
4212 struct ppc_link_hash_entry *fdh;
4213
b3fac117 4214 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM
4215 return TRUE;
4216
b3fac117
AM
4217 if (eh->elf.root.type == bfd_link_hash_warning)
4218 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4219
b3fac117
AM
4220 if (eh->elf.root.root.string[0] != '.')
4221 abort ();
8387904d 4222
b3fac117 4223 htab = ppc_hash_table (info);
99877b66 4224 fdh = get_fdh (eh, htab);
bb700d78 4225 if (fdh == NULL
b3fac117 4226 && !info->relocatable
bb700d78
AM
4227 && (eh->elf.root.type == bfd_link_hash_undefined
4228 || eh->elf.root.type == bfd_link_hash_undefweak)
4229 && eh->elf.ref_regular)
4230 {
4231 /* Make an undefweak function descriptor sym, which is enough to
4232 pull in an --as-needed shared lib, but won't cause link
4233 errors. Archives are handled elsewhere. */
b3fac117 4234 fdh = make_fdh (info, eh);
bb700d78 4235 if (fdh == NULL)
b3fac117 4236 return FALSE;
bb700d78
AM
4237 else
4238 fdh->elf.ref_regular = 1;
4239 }
e87d886e 4240 else if (fdh != NULL)
8387904d 4241 {
35b0ce59
AM
4242 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4243 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4244 if (entry_vis < descr_vis)
4245 fdh->elf.other += entry_vis - descr_vis;
4246 else if (entry_vis > descr_vis)
4247 eh->elf.other += descr_vis - entry_vis;
4248
e87d886e
AM
4249 if ((fdh->elf.root.type == bfd_link_hash_defined
4250 || fdh->elf.root.type == bfd_link_hash_defweak)
4251 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM
4252 {
4253 eh->elf.root.type = bfd_link_hash_undefweak;
4254 eh->was_undefined = 1;
4255 htab->twiddled_syms = 1;
4256 }
8387904d 4257 }
99877b66 4258
8387904d
AM
4259 return TRUE;
4260}
4261
b3fac117
AM
4262/* Process list of dot-symbols we made in link_hash_newfunc. */
4263
8387904d 4264static bfd_boolean
b3fac117 4265ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4266{
99877b66 4267 struct ppc_link_hash_table *htab;
b3fac117 4268 struct ppc_link_hash_entry **p, *eh;
433817dd 4269
99877b66 4270 htab = ppc_hash_table (info);
0c8d6e5c 4271 if (!is_ppc64_elf (info->output_bfd))
35b0ce59
AM
4272 return TRUE;
4273
0c8d6e5c 4274 if (is_ppc64_elf (ibfd))
b3fac117
AM
4275 {
4276 p = &htab->dot_syms;
4277 while ((eh = *p) != NULL)
4278 {
4279 *p = NULL;
4280 if (!add_symbol_adjust (eh, info))
4281 return FALSE;
4282 p = &eh->u.next_dot_sym;
4283 }
4284 }
4285
4286 /* Clear the list for non-ppc64 input files. */
4287 p = &htab->dot_syms;
4288 while ((eh = *p) != NULL)
4289 {
4290 *p = NULL;
4291 p = &eh->u.next_dot_sym;
4292 }
99877b66
AM
4293
4294 /* We need to fix the undefs list for any syms we have twiddled to
4295 undef_weak. */
4296 if (htab->twiddled_syms)
4297 {
77cfaee6 4298 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM
4299 htab->twiddled_syms = 0;
4300 }
b3fac117 4301 return TRUE;
8387904d
AM
4302}
4303
97fed1c9
JJ
4304/* Undo hash table changes when an --as-needed input file is determined
4305 not to be needed. */
4306
4307static bfd_boolean
4308ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4309 struct bfd_link_info *info)
4310{
4311 ppc_hash_table (info)->dot_syms = NULL;
4312 return TRUE;
4313}
4314
411e1bfb 4315static bfd_boolean
4ce794b7
AM
4316update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4317 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM
4318{
4319 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4320 char *local_got_tls_masks;
411e1bfb
AM
4321
4322 if (local_got_ents == NULL)
4323 {
4324 bfd_size_type size = symtab_hdr->sh_info;
4325
e7b938ca 4326 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4327 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM
4328 if (local_got_ents == NULL)
4329 return FALSE;
4330 elf_local_got_ents (abfd) = local_got_ents;
4331 }
4332
4333 if ((tls_type & TLS_EXPLICIT) == 0)
4334 {
4335 struct got_entry *ent;
4336
4337 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM
4338 if (ent->addend == r_addend
4339 && ent->owner == abfd
4340 && ent->tls_type == tls_type)
411e1bfb
AM
4341 break;
4342 if (ent == NULL)
4343 {
4344 bfd_size_type amt = sizeof (*ent);
4ce794b7 4345 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4346 if (ent == NULL)
4347 return FALSE;
4348 ent->next = local_got_ents[r_symndx];
4349 ent->addend = r_addend;
e717da7e 4350 ent->owner = abfd;
411e1bfb
AM
4351 ent->tls_type = tls_type;
4352 ent->got.refcount = 0;
4353 local_got_ents[r_symndx] = ent;
4354 }
4355 ent->got.refcount += 1;
4356 }
4357
e7b938ca
AM
4358 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4359 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4360 return TRUE;
65f38f15
AM
4361}
4362
411e1bfb 4363static bfd_boolean
4ce794b7 4364update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4365{
411e1bfb 4366 struct plt_entry *ent;
1e2f5b6e 4367
411e1bfb
AM
4368 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4369 if (ent->addend == addend)
4370 break;
4371 if (ent == NULL)
1e2f5b6e 4372 {
411e1bfb 4373 bfd_size_type amt = sizeof (*ent);
4ce794b7 4374 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4375 if (ent == NULL)
4376 return FALSE;
4377 ent->next = eh->elf.plt.plist;
4378 ent->addend = addend;
4379 ent->plt.refcount = 0;
4380 eh->elf.plt.plist = ent;
1e2f5b6e 4381 }
411e1bfb 4382 ent->plt.refcount += 1;
f5385ebf 4383 eh->elf.needs_plt = 1;
93f3fa99
AM
4384 if (eh->elf.root.root.string[0] == '.'
4385 && eh->elf.root.root.string[1] != '\0')
4386 eh->is_func = 1;
b34976b6 4387 return TRUE;
1e2f5b6e
AM
4388}
4389
5bd4f169 4390/* Look through the relocs for a section during the first phase, and
65f38f15 4391 calculate needed space in the global offset table, procedure
5d1634d7 4392 linkage table, and dynamic reloc sections. */
5bd4f169 4393
b34976b6 4394static bfd_boolean
4ce794b7
AM
4395ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4396 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4397{
65f38f15 4398 struct ppc_link_hash_table *htab;
5bd4f169
AM
4399 Elf_Internal_Shdr *symtab_hdr;
4400 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4401 const Elf_Internal_Rela *rel;
4402 const Elf_Internal_Rela *rel_end;
5bd4f169 4403 asection *sreloc;
1e2f5b6e 4404 asection **opd_sym_map;
5bd4f169 4405
1049f94e 4406 if (info->relocatable)
b34976b6 4407 return TRUE;
5bd4f169 4408
680a3378
AM
4409 /* Don't do anything special with non-loaded, non-alloced sections.
4410 In particular, any relocs in such sections should not affect GOT
4411 and PLT reference counting (ie. we don't allow them to create GOT
4412 or PLT entries), there's no possibility or desire to optimize TLS
4413 relocs, and there's not much point in propagating relocs to shared
4414 libs that the dynamic linker won't relocate. */
4415 if ((sec->flags & SEC_ALLOC) == 0)
4416 return TRUE;
4417
0c8d6e5c 4418 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4419
65f38f15 4420 htab = ppc_hash_table (info);
0ffa91dd 4421 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169
AM
4422
4423 sym_hashes = elf_sym_hashes (abfd);
4424 sym_hashes_end = (sym_hashes
1e2f5b6e
AM
4425 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4426 - symtab_hdr->sh_info);
5bd4f169
AM
4427
4428 sreloc = NULL;
1e2f5b6e
AM
4429 opd_sym_map = NULL;
4430 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4431 {
4432 /* Garbage collection needs some extra help with .opd sections.
4433 We don't want to necessarily keep everything referenced by
4434 relocs in .opd, as that would keep all functions. Instead,
4435 if we reference an .opd symbol (a function descriptor), we
4436 want to keep the function code symbol's section. This is
4437 easy for global symbols, but for local syms we need to keep
74f0fb50 4438 information about the associated function section. */
1e2f5b6e
AM
4439 bfd_size_type amt;
4440
74f0fb50 4441 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4442 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4443 if (opd_sym_map == NULL)
b34976b6 4444 return FALSE;
74f0fb50 4445 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM
4446 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4447 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4448 }
5bd4f169 4449
82bd7b59
AM
4450 if (htab->sfpr == NULL
4451 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4452 return FALSE;
82bd7b59 4453
5bd4f169
AM
4454 rel_end = relocs + sec->reloc_count;
4455 for (rel = relocs; rel < rel_end; rel++)
4456 {
4457 unsigned long r_symndx;
4458 struct elf_link_hash_entry *h;
04c9666a 4459 enum elf_ppc64_reloc_type r_type;
411e1bfb 4460 int tls_type = 0;
7c8fe5c4 4461 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM
4462
4463 r_symndx = ELF64_R_SYM (rel->r_info);
4464 if (r_symndx < symtab_hdr->sh_info)
4465 h = NULL;
4466 else
973a3492
L
4467 {
4468 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4469 while (h->root.type == bfd_link_hash_indirect
4470 || h->root.type == bfd_link_hash_warning)
4471 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4472 }
5bd4f169 4473
4ce794b7 4474 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4475 switch (r_type)
5bd4f169 4476 {
411e1bfb
AM
4477 case R_PPC64_GOT_TLSLD16:
4478 case R_PPC64_GOT_TLSLD16_LO:
4479 case R_PPC64_GOT_TLSLD16_HI:
4480 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 4481 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
4482 goto dogottls;
4483
4484 case R_PPC64_GOT_TLSGD16:
4485 case R_PPC64_GOT_TLSGD16_LO:
4486 case R_PPC64_GOT_TLSGD16_HI:
4487 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4488 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
4489 goto dogottls;
4490
4491 case R_PPC64_GOT_TPREL16_DS:
4492 case R_PPC64_GOT_TPREL16_LO_DS:
4493 case R_PPC64_GOT_TPREL16_HI:
4494 case R_PPC64_GOT_TPREL16_HA:
4495 if (info->shared)
4496 info->flags |= DF_STATIC_TLS;
4497 tls_type = TLS_TLS | TLS_TPREL;
4498 goto dogottls;
4499
4500 case R_PPC64_GOT_DTPREL16_DS:
4501 case R_PPC64_GOT_DTPREL16_LO_DS:
4502 case R_PPC64_GOT_DTPREL16_HI:
4503 case R_PPC64_GOT_DTPREL16_HA:
4504 tls_type = TLS_TLS | TLS_DTPREL;
4505 dogottls:
4506 sec->has_tls_reloc = 1;
4507 /* Fall thru */
4508
5bd4f169 4509 case R_PPC64_GOT16:
5bd4f169 4510 case R_PPC64_GOT16_DS:
65f38f15
AM
4511 case R_PPC64_GOT16_HA:
4512 case R_PPC64_GOT16_HI:
4513 case R_PPC64_GOT16_LO:
5bd4f169 4514 case R_PPC64_GOT16_LO_DS:
65f38f15 4515 /* This symbol requires a global offset table entry. */
4c52953f 4516 sec->has_toc_reloc = 1;
e717da7e
AM
4517 if (ppc64_elf_tdata (abfd)->got == NULL
4518 && !create_got_section (abfd, info))
b34976b6 4519 return FALSE;
5bd4f169
AM
4520
4521 if (h != NULL)
4522 {
411e1bfb
AM
4523 struct ppc_link_hash_entry *eh;
4524 struct got_entry *ent;
65f38f15 4525
411e1bfb
AM
4526 eh = (struct ppc_link_hash_entry *) h;
4527 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4528 if (ent->addend == rel->r_addend
e717da7e 4529 && ent->owner == abfd
411e1bfb
AM
4530 && ent->tls_type == tls_type)
4531 break;
4532 if (ent == NULL)
5bd4f169 4533 {
411e1bfb 4534 bfd_size_type amt = sizeof (*ent);
4ce794b7 4535 ent = bfd_alloc (abfd, amt);
411e1bfb 4536 if (ent == NULL)
b34976b6 4537 return FALSE;
411e1bfb
AM
4538 ent->next = eh->elf.got.glist;
4539 ent->addend = rel->r_addend;
e717da7e 4540 ent->owner = abfd;
411e1bfb
AM
4541 ent->tls_type = tls_type;
4542 ent->got.refcount = 0;
4543 eh->elf.got.glist = ent;
5bd4f169 4544 }
411e1bfb 4545 ent->got.refcount += 1;
e7b938ca 4546 eh->tls_mask |= tls_type;
5bd4f169 4547 }
411e1bfb
AM
4548 else
4549 /* This is a global offset table entry for a local symbol. */
4550 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4551 rel->r_addend, tls_type))
4552 return FALSE;
5bd4f169
AM
4553 break;
4554
5bd4f169 4555 case R_PPC64_PLT16_HA:
65f38f15
AM
4556 case R_PPC64_PLT16_HI:
4557 case R_PPC64_PLT16_LO:
4558 case R_PPC64_PLT32:
4559 case R_PPC64_PLT64:
5bd4f169 4560 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM
4561 actually build the entry in adjust_dynamic_symbol,
4562 because this might be a case of linking PIC code without
4563 linking in any dynamic objects, in which case we don't
4564 need to generate a procedure linkage table after all. */
5bd4f169
AM
4565 if (h == NULL)
4566 {
4567 /* It does not make sense to have a procedure linkage
3fad3c7c 4568 table entry for a local symbol. */
5bd4f169 4569 bfd_set_error (bfd_error_bad_value);
b34976b6 4570 return FALSE;
5bd4f169 4571 }
411e1bfb
AM
4572 else
4573 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4574 rel->r_addend))
4575 return FALSE;
5bd4f169
AM
4576 break;
4577
4578 /* The following relocations don't need to propagate the
4579 relocation if linking a shared object since they are
4580 section relative. */
4581 case R_PPC64_SECTOFF:
4582 case R_PPC64_SECTOFF_LO:
4583 case R_PPC64_SECTOFF_HI:
4584 case R_PPC64_SECTOFF_HA:
4585 case R_PPC64_SECTOFF_DS:
4586 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM
4587 case R_PPC64_DTPREL16:
4588 case R_PPC64_DTPREL16_LO:
4589 case R_PPC64_DTPREL16_HI:
4590 case R_PPC64_DTPREL16_HA:
4591 case R_PPC64_DTPREL16_DS:
4592 case R_PPC64_DTPREL16_LO_DS:
4593 case R_PPC64_DTPREL16_HIGHER:
4594 case R_PPC64_DTPREL16_HIGHERA:
4595 case R_PPC64_DTPREL16_HIGHEST:
4596 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM
4597 break;
4598
ad8e1ba5
AM
4599 /* Nor do these. */
4600 case R_PPC64_TOC16:
4601 case R_PPC64_TOC16_LO:
4602 case R_PPC64_TOC16_HI:
4603 case R_PPC64_TOC16_HA:
4604 case R_PPC64_TOC16_DS:
4605 case R_PPC64_TOC16_LO_DS:
4c52953f 4606 sec->has_toc_reloc = 1;
ad8e1ba5
AM
4607 break;
4608
5bd4f169
AM
4609 /* This relocation describes the C++ object vtable hierarchy.
4610 Reconstruct it for later use during GC. */
4611 case R_PPC64_GNU_VTINHERIT:
c152c796 4612 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4613 return FALSE;
5bd4f169
AM
4614 break;
4615
4616 /* This relocation describes which C++ vtable entries are actually
4617 used. Record for later use during GC. */
4618 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB
4619 BFD_ASSERT (h != NULL);
4620 if (h != NULL
4621 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4622 return FALSE;
5bd4f169
AM
4623 break;
4624
721956f4
AM
4625 case R_PPC64_REL14:
4626 case R_PPC64_REL14_BRTAKEN:
4627 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM
4628 {
4629 asection *dest = NULL;
4630
4631 /* Heuristic: If jumping outside our section, chances are
4632 we are going to need a stub. */
4633 if (h != NULL)
4634 {
4635 /* If the sym is weak it may be overridden later, so
4636 don't assume we know where a weak sym lives. */
4637 if (h->root.type == bfd_link_hash_defined)
4638 dest = h->root.u.def.section;
4639 }
4640 else
4641 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4642 sec, r_symndx);
4643 if (dest != sec)
7c8fe5c4 4644 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4645 }
721956f4
AM
4646 /* Fall through. */
4647
5d1634d7 4648 case R_PPC64_REL24:
8387904d 4649 if (h != NULL)
5d1634d7
AM
4650 {
4651 /* We may need a .plt entry if the function this reloc
4652 refers to is in a shared lib. */
411e1bfb
AM
4653 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4654 rel->r_addend))
4655 return FALSE;
8387904d
AM
4656 if (h == &htab->tls_get_addr->elf
4657 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4658 sec->has_tls_reloc = 1;
8387904d 4659 else if (htab->tls_get_addr == NULL
0112cd26 4660 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM
4661 && (h->root.root.string[15] == 0
4662 || h->root.root.string[15] == '@'))
411e1bfb 4663 {
8387904d
AM
4664 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4665 sec->has_tls_reloc = 1;
4666 }
4667 else if (htab->tls_get_addr_fd == NULL
0112cd26 4668 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM
4669 && (h->root.root.string[14] == 0
4670 || h->root.root.string[14] == '@'))
4671 {
4672 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM
4673 sec->has_tls_reloc = 1;
4674 }
4675 }
4676 break;
4677
4678 case R_PPC64_TPREL64:
4679 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
4680 if (info->shared)
4681 info->flags |= DF_STATIC_TLS;
4682 goto dotlstoc;
4683
4684 case R_PPC64_DTPMOD64:
4685 if (rel + 1 < rel_end
4686 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4687 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4688 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4689 else
951fd09b 4690 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM
4691 goto dotlstoc;
4692
4693 case R_PPC64_DTPREL64:
4694 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4695 if (rel != relocs
4696 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4697 && rel[-1].r_offset == rel->r_offset - 8)
4698 /* This is the second reloc of a dtpmod, dtprel pair.
4699 Don't mark with TLS_DTPREL. */
4700 goto dodyn;
4701
4702 dotlstoc:
4703 sec->has_tls_reloc = 1;
4704 if (h != NULL)
4705 {
4706 struct ppc_link_hash_entry *eh;
4707 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4708 eh->tls_mask |= tls_type;
411e1bfb
AM
4709 }
4710 else
4711 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4712 rel->r_addend, tls_type))
4713 return FALSE;
4714
7c8fe5c4
AM
4715 ppc64_sec = ppc64_elf_section_data (sec);
4716 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4717 {
e7b938ca 4718 /* One extra to simplify get_tls_mask. */
eea6121a 4719 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM
4720 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4721 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4722 return FALSE;
7c8fe5c4
AM
4723 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4724 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM
4725 }
4726 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4727 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM
4728
4729 /* Mark the second slot of a GD or LD entry.
4730 -1 to indicate GD and -2 to indicate LD. */
4731 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4732 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4733 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4734 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM
4735 goto dodyn;
4736
4737 case R_PPC64_TPREL16:
4738 case R_PPC64_TPREL16_LO:
4739 case R_PPC64_TPREL16_HI:
4740 case R_PPC64_TPREL16_HA:
4741 case R_PPC64_TPREL16_DS:
4742 case R_PPC64_TPREL16_LO_DS:
4743 case R_PPC64_TPREL16_HIGHER:
4744 case R_PPC64_TPREL16_HIGHERA:
4745 case R_PPC64_TPREL16_HIGHEST:
4746 case R_PPC64_TPREL16_HIGHESTA:
4747 if (info->shared)
4748 {
4749 info->flags |= DF_STATIC_TLS;
4750 goto dodyn;
5d1634d7
AM
4751 }
4752 break;
4753
e86ce104 4754 case R_PPC64_ADDR64:
1e2f5b6e 4755 if (opd_sym_map != NULL
1e2f5b6e 4756 && rel + 1 < rel_end
4ce794b7 4757 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4758 {
8387904d
AM
4759 if (h != NULL)
4760 {
4761 if (h->root.root.string[0] == '.'
4762 && h->root.root.string[1] != 0
4763 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4764 ;
4765 else
4766 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4767 }
4768 else
4769 {
4770 asection *s;
1e2f5b6e 4771
8387904d
AM
4772 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4773 r_symndx);
4774 if (s == NULL)
4775 return FALSE;
4776 else if (s != sec)
3f764659 4777 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4778 }
1e2f5b6e 4779 }
e86ce104
AM
4780 /* Fall through. */
4781
04c9666a 4782 case R_PPC64_REL30:
5bd4f169 4783 case R_PPC64_REL32:
04c9666a 4784 case R_PPC64_REL64:
65f38f15
AM
4785 case R_PPC64_ADDR14:
4786 case R_PPC64_ADDR14_BRNTAKEN:
4787 case R_PPC64_ADDR14_BRTAKEN:
4788 case R_PPC64_ADDR16:
4789 case R_PPC64_ADDR16_DS:
4790 case R_PPC64_ADDR16_HA:
4791 case R_PPC64_ADDR16_HI:
4792 case R_PPC64_ADDR16_HIGHER:
4793 case R_PPC64_ADDR16_HIGHERA:
4794 case R_PPC64_ADDR16_HIGHEST:
4795 case R_PPC64_ADDR16_HIGHESTA:
4796 case R_PPC64_ADDR16_LO:
4797 case R_PPC64_ADDR16_LO_DS:
4798 case R_PPC64_ADDR24:
65f38f15 4799 case R_PPC64_ADDR32:
65f38f15
AM
4800 case R_PPC64_UADDR16:
4801 case R_PPC64_UADDR32:
4802 case R_PPC64_UADDR64:
5bd4f169 4803 case R_PPC64_TOC:
81848ca0
AM
4804 if (h != NULL && !info->shared)
4805 /* We may need a copy reloc. */
f5385ebf 4806 h->non_got_ref = 1;
81848ca0 4807
41bd81ab 4808 /* Don't propagate .opd relocs. */
1e2f5b6e 4809 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4810 break;
e86ce104 4811
65f38f15
AM
4812 /* If we are creating a shared library, and this is a reloc
4813 against a global symbol, or a non PC relative reloc
4814 against a local symbol, then we need to copy the reloc
4815 into the shared library. However, if we are linking with
4816 -Bsymbolic, we do not need to copy a reloc against a
4817 global symbol which is defined in an object we are
4818 including in the link (i.e., DEF_REGULAR is set). At
4819 this point we have not seen all the input files, so it is
4820 possible that DEF_REGULAR is not set now but will be set
4821 later (it is never cleared). In case of a weak definition,
4822 DEF_REGULAR may be cleared later by a strong definition in
4823 a shared library. We account for that possibility below by
f4656909 4824 storing information in the dyn_relocs field of the hash
65f38f15
AM
4825 table entry. A similar situation occurs when creating
4826 shared libraries and symbol visibility changes render the
4827 symbol local.
4828
4829 If on the other hand, we are creating an executable, we
4830 may need to keep relocations for symbols satisfied by a
4831 dynamic library if we manage to avoid copy relocs for the
4832 symbol. */
411e1bfb 4833 dodyn:
65f38f15 4834 if ((info->shared
411e1bfb 4835 && (MUST_BE_DYN_RELOC (r_type)
65f38f15
AM
4836 || (h != NULL
4837 && (! info->symbolic
4838 || h->root.type == bfd_link_hash_defweak
f5385ebf 4839 || !h->def_regular))))
f4656909
AM
4840 || (ELIMINATE_COPY_RELOCS
4841 && !info->shared
65f38f15
AM
4842 && h != NULL
4843 && (h->root.type == bfd_link_hash_defweak
f5385ebf 4844 || !h->def_regular)))
5bd4f169 4845 {
ec338859
AM
4846 struct ppc_dyn_relocs *p;
4847 struct ppc_dyn_relocs **head;
4848
65f38f15
AM
4849 /* We must copy these reloc types into the output file.
4850 Create a reloc section in dynobj and make room for
4851 this reloc. */
5bd4f169
AM
4852 if (sreloc == NULL)
4853 {
4854 const char *name;
65f38f15 4855 bfd *dynobj;
5bd4f169
AM
4856
4857 name = (bfd_elf_string_from_elf_section
4858 (abfd,
4859 elf_elfheader (abfd)->e_shstrndx,
4860 elf_section_data (sec)->rel_hdr.sh_name));
4861 if (name == NULL)
b34976b6 4862 return FALSE;
5bd4f169 4863
0112cd26 4864 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM
4865 || strcmp (bfd_get_section_name (abfd, sec),
4866 name + 5) != 0)
4867 {
4868 (*_bfd_error_handler)
d003868e
AM
4869 (_("%B: bad relocation section name `%s\'"),
4870 abfd, name);
5d1634d7 4871 bfd_set_error (bfd_error_bad_value);
65f38f15
AM
4872 }
4873
65f38f15 4874 dynobj = htab->elf.dynobj;
5bd4f169
AM
4875 sreloc = bfd_get_section_by_name (dynobj, name);
4876 if (sreloc == NULL)
4877 {
4878 flagword flags;
4879
5bd4f169 4880 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM
4881 | SEC_IN_MEMORY | SEC_LINKER_CREATED
4882 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L
4883 sreloc = bfd_make_section_with_flags (dynobj,
4884 name,
4885 flags);
5bd4f169 4886 if (sreloc == NULL
65f38f15 4887 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 4888 return FALSE;
5bd4f169 4889 }
65f38f15 4890 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM
4891 }
4892
65f38f15
AM
4893 /* If this is a global symbol, we count the number of
4894 relocations we need for this symbol. */
4895 if (h != NULL)
4896 {
ec338859 4897 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM
4898 }
4899 else
4900 {
ec338859
AM
4901 /* Track dynamic relocs needed for local syms too.
4902 We really need local syms available to do this
4903 easily. Oh well. */
4904
4905 asection *s;
6edfbbad
DJ
4906 void *vpp;
4907
ec338859
AM
4908 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4909 sec, r_symndx);
4910 if (s == NULL)
b34976b6 4911 return FALSE;
ec338859 4912
6edfbbad
DJ
4913 vpp = &elf_section_data (s)->local_dynrel;
4914 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 4915 }
ec338859
AM
4916
4917 p = *head;
4918 if (p == NULL || p->sec != sec)
4919 {
4ce794b7 4920 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 4921 if (p == NULL)
b34976b6 4922 return FALSE;
ec338859
AM
4923 p->next = *head;
4924 *head = p;
4925 p->sec = sec;
4926 p->count = 0;
4927 p->pc_count = 0;
4928 }
4929
4930 p->count += 1;
411e1bfb 4931 if (!MUST_BE_DYN_RELOC (r_type))
ec338859 4932 p->pc_count += 1;
65f38f15 4933 }
5bd4f169 4934 break;
65f38f15
AM
4935
4936 default:
96e0dda4 4937 break;
5bd4f169
AM
4938 }
4939 }
4940
b34976b6 4941 return TRUE;
5bd4f169
AM
4942}
4943
8387904d
AM
4944/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4945 of the code entry point, and its section. */
4946
4947static bfd_vma
4948opd_entry_value (asection *opd_sec,
4949 bfd_vma offset,
4950 asection **code_sec,
4951 bfd_vma *code_off)
4952{
4953 bfd *opd_bfd = opd_sec->owner;
8860955f 4954 Elf_Internal_Rela *relocs;
8387904d 4955 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 4956 bfd_vma val;
8387904d 4957
4b85d634
AM
4958 /* No relocs implies we are linking a --just-symbols object. */
4959 if (opd_sec->reloc_count == 0)
4960 {
4961 bfd_vma val;
4962
4963 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
4964 return (bfd_vma) -1;
3b36f7e6 4965
4b85d634
AM
4966 if (code_sec != NULL)
4967 {
4968 asection *sec, *likely = NULL;
4969 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
4970 if (sec->vma <= val
4971 && (sec->flags & SEC_LOAD) != 0
4972 && (sec->flags & SEC_ALLOC) != 0)
4973 likely = sec;
4974 if (likely != NULL)
4975 {
4976 *code_sec = likely;
4977 if (code_off != NULL)
4978 *code_off = val - likely->vma;
4979 }
4980 }
4981 return val;
4982 }
4983
0c8d6e5c 4984 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 4985
8860955f
AM
4986 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
4987 if (relocs == NULL)
4988 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 4989
8387904d 4990 /* Go find the opd reloc at the sym address. */
8860955f 4991 lo = relocs;
8387904d
AM
4992 BFD_ASSERT (lo != NULL);
4993 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 4994 val = (bfd_vma) -1;
8387904d
AM
4995 while (lo < hi)
4996 {
4997 look = lo + (hi - lo) / 2;
4998 if (look->r_offset < offset)
4999 lo = look + 1;
5000 else if (look->r_offset > offset)
5001 hi = look;
5002 else
5003 {
0ffa91dd
NC
5004 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5005
8387904d
AM
5006 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5007 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5008 {
5009 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM
5010 asection *sec;
5011
5012 if (symndx < symtab_hdr->sh_info)
5013 {
5014 Elf_Internal_Sym *sym;
5015
5016 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5017 if (sym == NULL)
5018 {
5019 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5020 symtab_hdr->sh_info,
5021 0, NULL, NULL, NULL);
5022 if (sym == NULL)
645ea6a9 5023 break;
8387904d
AM
5024 symtab_hdr->contents = (bfd_byte *) sym;
5025 }
5026
5027 sym += symndx;
5028 val = sym->st_value;
cb33740c 5029 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM
5030 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5031 }
5032 else
5033 {
5034 struct elf_link_hash_entry **sym_hashes;
5035 struct elf_link_hash_entry *rh;
5036
5037 sym_hashes = elf_sym_hashes (opd_bfd);
5038 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5039 while (rh->root.type == bfd_link_hash_indirect
5040 || rh->root.type == bfd_link_hash_warning)
5041 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5042 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5043 || rh->root.type == bfd_link_hash_defweak);
5044 val = rh->root.u.def.value;
5045 sec = rh->root.u.def.section;
5046 }
5047 val += look->r_addend;
5048 if (code_off != NULL)
5049 *code_off = val;
5050 if (code_sec != NULL)
5051 *code_sec = sec;
5052 if (sec != NULL && sec->output_section != NULL)
5053 val += sec->output_section->vma + sec->output_offset;
8387904d
AM
5054 }
5055 break;
5056 }
5057 }
645ea6a9 5058
645ea6a9 5059 return val;
8387904d
AM
5060}
5061
74f0fb50
AM
5062/* Mark all our entry sym sections, both opd and code section. */
5063
5064static void
5065ppc64_elf_gc_keep (struct bfd_link_info *info)
5066{
5067 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5068 struct bfd_sym_chain *sym;
5069
5070 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5071 {
5072 struct ppc_link_hash_entry *eh;
5073 asection *sec;
5074
5075 eh = (struct ppc_link_hash_entry *)
5076 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5077 if (eh == NULL)
5078 continue;
5079 if (eh->elf.root.type != bfd_link_hash_defined
5080 && eh->elf.root.type != bfd_link_hash_defweak)
5081 continue;
5082
5083 if (eh->is_func_descriptor
5084 && (eh->oh->elf.root.type == bfd_link_hash_defined
5085 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5086 {
5087 sec = eh->oh->elf.root.u.def.section;
5088 sec->flags |= SEC_KEEP;
5089 }
5090 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5091 && opd_entry_value (eh->elf.root.u.def.section,
5092 eh->elf.root.u.def.value,
5093 &sec, NULL) != (bfd_vma) -1)
5094 sec->flags |= SEC_KEEP;
5095
5096 sec = eh->elf.root.u.def.section;
5097 sec->flags |= SEC_KEEP;
5098 }
5099}
5100
64d03ab5
AM
5101/* Mark sections containing dynamically referenced symbols. When
5102 building shared libraries, we must assume that any visible symbol is
5103 referenced. */
5104
5105static bfd_boolean
5106ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5107{
5108 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5109 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5110
5111 if (eh->elf.root.type == bfd_link_hash_warning)
5112 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5113
5114 /* Dynamic linking info is on the func descriptor sym. */
5115 if (eh->oh != NULL
5116 && eh->oh->is_func_descriptor
5117 && (eh->oh->elf.root.type == bfd_link_hash_defined
5118 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5119 eh = eh->oh;
5120
5121 if ((eh->elf.root.type == bfd_link_hash_defined
5122 || eh->elf.root.type == bfd_link_hash_defweak)
5123 && (eh->elf.ref_dynamic
5124 || (!info->executable
5125 && eh->elf.def_regular
5126 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5127 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5128 {
5129 asection *code_sec;
5130
5131 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5132
5133 /* Function descriptor syms cause the associated
5134 function code sym section to be marked. */
5135 if (eh->is_func_descriptor
5136 && (eh->oh->elf.root.type == bfd_link_hash_defined
5137 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5138 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5139 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5140 && opd_entry_value (eh->elf.root.u.def.section,
5141 eh->elf.root.u.def.value,
5142 &code_sec, NULL) != (bfd_vma) -1)
5143 code_sec->flags |= SEC_KEEP;
5144 }
5145
5146 return TRUE;
5147}
5148
5bd4f169
AM
5149/* Return the section that should be marked against GC for a given
5150 relocation. */
5151
5152static asection *
4ce794b7 5153ppc64_elf_gc_mark_hook (asection *sec,
74f0fb50 5154 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4ce794b7
AM
5155 Elf_Internal_Rela *rel,
5156 struct elf_link_hash_entry *h,
5157 Elf_Internal_Sym *sym)
5bd4f169 5158{
ccfa59ea
AM
5159 asection *rsec;
5160
ccfa59ea
AM
5161 /* Syms return NULL if we're marking .opd, so we avoid marking all
5162 function sections, as all functions are referenced in .opd. */
5163 rsec = NULL;
5164 if (get_opd_info (sec) != NULL)
5165 return rsec;
1e2f5b6e 5166
5bd4f169
AM
5167 if (h != NULL)
5168 {
04c9666a 5169 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5170 struct ppc_link_hash_entry *eh;
a33d1f77 5171
4ce794b7 5172 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5173 switch (r_type)
5bd4f169
AM
5174 {
5175 case R_PPC64_GNU_VTINHERIT:
5176 case R_PPC64_GNU_VTENTRY:
5177 break;
5178
5179 default:
5180 switch (h->root.type)
5181 {
5182 case bfd_link_hash_defined:
5183 case bfd_link_hash_defweak:
ccfa59ea 5184 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM
5185 if (eh->oh != NULL
5186 && eh->oh->is_func_descriptor
5187 && (eh->oh->elf.root.type == bfd_link_hash_defined
5188 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5189 eh = eh->oh;
1e2f5b6e
AM
5190
5191 /* Function descriptor syms cause the associated
5192 function code sym section to be marked. */
c4f68ce3
AM
5193 if (eh->is_func_descriptor
5194 && (eh->oh->elf.root.type == bfd_link_hash_defined
5195 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM
5196 {
5197 /* They also mark their opd section. */
74f0fb50 5198 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea
AM
5199
5200 rsec = eh->oh->elf.root.u.def.section;
5201 }
8387904d
AM
5202 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5203 && opd_entry_value (eh->elf.root.u.def.section,
5204 eh->elf.root.u.def.value,
5205 &rsec, NULL) != (bfd_vma) -1)
74f0fb50 5206 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5207 else
1e2f5b6e
AM
5208 rsec = h->root.u.def.section;
5209 break;
5bd4f169
AM
5210
5211 case bfd_link_hash_common:
1e2f5b6e
AM
5212 rsec = h->root.u.c.p->section;
5213 break;
5bd4f169
AM
5214
5215 default:
5216 break;
5217 }
5218 }
5219 }
5220 else
5221 {
74f0fb50 5222 struct _opd_sec_data *opd;
1e2f5b6e
AM
5223
5224 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM
5225 opd = get_opd_info (rsec);
5226 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5227 {
74f0fb50 5228 rsec->gc_mark = 1;
ccfa59ea 5229
74f0fb50 5230 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5231 }
5bd4f169
AM
5232 }
5233
1e2f5b6e 5234 return rsec;
5bd4f169
AM
5235}
5236
65f38f15
AM
5237/* Update the .got, .plt. and dynamic reloc reference counts for the
5238 section being removed. */
5bd4f169 5239
b34976b6 5240static bfd_boolean
4ce794b7
AM
5241ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5242 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5243{
411e1bfb 5244 struct ppc_link_hash_table *htab;
5bd4f169
AM
5245 Elf_Internal_Shdr *symtab_hdr;
5246 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5247 struct got_entry **local_got_ents;
5bd4f169 5248 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5249
7dda2462
TG
5250 if (info->relocatable)
5251 return TRUE;
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);
0ffa91dd 5259 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 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:
951fd09b 5300 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5301 goto dogot;
5302
5303 case R_PPC64_GOT_TLSGD16:
5304 case R_PPC64_GOT_TLSGD16_LO:
5305 case R_PPC64_GOT_TLSGD16_HI:
5306 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5307 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5308 goto dogot;
5309
5310 case R_PPC64_GOT_TPREL16_DS:
5311 case R_PPC64_GOT_TPREL16_LO_DS:
5312 case R_PPC64_GOT_TPREL16_HI:
5313 case R_PPC64_GOT_TPREL16_HA:
5314 tls_type = TLS_TLS | TLS_TPREL;
5315 goto dogot;
5316
5317 case R_PPC64_GOT_DTPREL16_DS:
5318 case R_PPC64_GOT_DTPREL16_LO_DS:
5319 case R_PPC64_GOT_DTPREL16_HI:
5320 case R_PPC64_GOT_DTPREL16_HA:
5321 tls_type = TLS_TLS | TLS_DTPREL;
5322 goto dogot;
5323
a33d1f77
AM
5324 case R_PPC64_GOT16:
5325 case R_PPC64_GOT16_DS:
5326 case R_PPC64_GOT16_HA:
5327 case R_PPC64_GOT16_HI:
5328 case R_PPC64_GOT16_LO:
5329 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM
5330 dogot:
5331 {
5332 struct got_entry *ent;
5333
58ac9f71
AM
5334 if (h != NULL)
5335 ent = h->got.glist;
411e1bfb
AM
5336 else
5337 ent = local_got_ents[r_symndx];
5338
5339 for (; ent != NULL; ent = ent->next)
5340 if (ent->addend == rel->r_addend
e717da7e 5341 && ent->owner == abfd
411e1bfb
AM
5342 && ent->tls_type == tls_type)
5343 break;
5344 if (ent == NULL)
5345 abort ();
5346 if (ent->got.refcount > 0)
5347 ent->got.refcount -= 1;
5348 }
a33d1f77 5349 break;
65f38f15 5350
a33d1f77
AM
5351 case R_PPC64_PLT16_HA:
5352 case R_PPC64_PLT16_HI:
5353 case R_PPC64_PLT16_LO:
5354 case R_PPC64_PLT32:
5355 case R_PPC64_PLT64:
721956f4
AM
5356 case R_PPC64_REL14:
5357 case R_PPC64_REL14_BRNTAKEN:
5358 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5359 case R_PPC64_REL24:
58ac9f71 5360 if (h != NULL)
5d1634d7 5361 {
411e1bfb
AM
5362 struct plt_entry *ent;
5363
411e1bfb
AM
5364 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5365 if (ent->addend == rel->r_addend)
5366 break;
5367 if (ent == NULL)
5368 abort ();
5369 if (ent->plt.refcount > 0)
5370 ent->plt.refcount -= 1;
5d1634d7 5371 }
e86ce104 5372 break;
5d1634d7 5373
a33d1f77
AM
5374 default:
5375 break;
5376 }
5377 }
b34976b6 5378 return TRUE;
5bd4f169
AM
5379}
5380
deb0e272
AM
5381/* The maximum size of .sfpr. */
5382#define SFPR_MAX (218*4)
5383
5384struct sfpr_def_parms
5385{
699733f6
AM
5386 const char name[12];
5387 unsigned char lo, hi;
deb0e272
AM
5388 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5389 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5390};
5391
5392/* Auto-generate _save*, _rest* functions in .sfpr. */
5393
5394static unsigned int
5395sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5396{
5397 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5398 unsigned int i;
5399 size_t len = strlen (parm->name);
5400 bfd_boolean writing = FALSE;
699733f6 5401 char sym[16];
deb0e272
AM
5402
5403 memcpy (sym, parm->name, len);
5404 sym[len + 2] = 0;
5405
5406 for (i = parm->lo; i <= parm->hi; i++)
5407 {
5408 struct elf_link_hash_entry *h;
5409
5410 sym[len + 0] = i / 10 + '0';
5411 sym[len + 1] = i % 10 + '0';
5412 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5413 if (h != NULL
f5385ebf 5414 && !h->def_regular)
deb0e272
AM
5415 {
5416 h->root.type = bfd_link_hash_defined;
5417 h->root.u.def.section = htab->sfpr;
5418 h->root.u.def.value = htab->sfpr->size;
5419 h->type = STT_FUNC;
f5385ebf 5420 h->def_regular = 1;
deb0e272
AM
5421 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5422 writing = TRUE;
5423 if (htab->sfpr->contents == NULL)
5424 {
5425 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5426 if (htab->sfpr->contents == NULL)
5427 return FALSE;
5428 }
5429 }
5430 if (writing)
5431 {
5432 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5433 if (i != parm->hi)
5434 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5435 else
5436 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5437 htab->sfpr->size = p - htab->sfpr->contents;
5438 }
5439 }
5440
5441 return TRUE;
5442}
5443
5444static bfd_byte *
5445savegpr0 (bfd *abfd, bfd_byte *p, int r)
5446{
5447 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5448 return p + 4;
5449}
5450
5451static bfd_byte *
5452savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5453{
5454 p = savegpr0 (abfd, p, r);
5455 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5456 p = p + 4;
5457 bfd_put_32 (abfd, BLR, p);
5458 return p + 4;
5459}
5460
5461static bfd_byte *
5462restgpr0 (bfd *abfd, bfd_byte *p, int r)
5463{
5464 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5465 return p + 4;
5466}
5467
5468static bfd_byte *
5469restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5470{
5471 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5472 p = p + 4;
5473 p = restgpr0 (abfd, p, r);
5474 bfd_put_32 (abfd, MTLR_R0, p);
5475 p = p + 4;
5476 if (r == 29)
5477 {
5478 p = restgpr0 (abfd, p, 30);
5479 p = restgpr0 (abfd, p, 31);
5480 }
5481 bfd_put_32 (abfd, BLR, p);
5482 return p + 4;
5483}
5484
5485static bfd_byte *
5486savegpr1 (bfd *abfd, bfd_byte *p, int r)
5487{
5488 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5489 return p + 4;
5490}
5491
5492static bfd_byte *
5493savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5494{
5495 p = savegpr1 (abfd, p, r);
5496 bfd_put_32 (abfd, BLR, p);
5497 return p + 4;
5498}
5499
5500static bfd_byte *
5501restgpr1 (bfd *abfd, bfd_byte *p, int r)
5502{
5503 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5504 return p + 4;
5505}
5506
5507static bfd_byte *
5508restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5509{
5510 p = restgpr1 (abfd, p, r);
5511 bfd_put_32 (abfd, BLR, p);
5512 return p + 4;
5513}
5514
5515static bfd_byte *
5516savefpr (bfd *abfd, bfd_byte *p, int r)
5517{
5518 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5519 return p + 4;
5520}
5521
5522static bfd_byte *
5523savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5524{
5525 p = savefpr (abfd, p, r);
5526 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5527 p = p + 4;
5528 bfd_put_32 (abfd, BLR, p);
5529 return p + 4;
5530}
5531
5532static bfd_byte *
5533restfpr (bfd *abfd, bfd_byte *p, int r)
5534{
5535 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5536 return p + 4;
5537}
5538
5539static bfd_byte *
5540restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5541{
5542 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5543 p = p + 4;
5544 p = restfpr (abfd, p, r);
5545 bfd_put_32 (abfd, MTLR_R0, p);
5546 p = p + 4;
5547 if (r == 29)
5548 {
5549 p = restfpr (abfd, p, 30);
5550 p = restfpr (abfd, p, 31);
5551 }
5552 bfd_put_32 (abfd, BLR, p);
5553 return p + 4;
5554}
5555
5556static bfd_byte *
5557savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5558{
5559 p = savefpr (abfd, p, r);
5560 bfd_put_32 (abfd, BLR, p);
5561 return p + 4;
5562}
5563
5564static bfd_byte *
5565restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5566{
5567 p = restfpr (abfd, p, r);
5568 bfd_put_32 (abfd, BLR, p);
5569 return p + 4;
5570}
5571
5572static bfd_byte *
5573savevr (bfd *abfd, bfd_byte *p, int r)
5574{
5575 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5576 p = p + 4;
5577 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5578 return p + 4;
5579}
5580
5581static bfd_byte *
5582savevr_tail (bfd *abfd, bfd_byte *p, int r)
5583{
5584 p = savevr (abfd, p, r);
5585 bfd_put_32 (abfd, BLR, p);
5586 return p + 4;
5587}
5588
5589static bfd_byte *
5590restvr (bfd *abfd, bfd_byte *p, int r)
5591{
5592 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5593 p = p + 4;
5594 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5595 return p + 4;
5596}
5597
5598static bfd_byte *
5599restvr_tail (bfd *abfd, bfd_byte *p, int r)
5600{
5601 p = restvr (abfd, p, r);
5602 bfd_put_32 (abfd, BLR, p);
5603 return p + 4;
5604}
5605
e86ce104
AM
5606/* Called via elf_link_hash_traverse to transfer dynamic linking
5607 information on function code symbol entries to their corresponding
5608 function descriptor symbol entries. */
deb0e272 5609
b34976b6 5610static bfd_boolean
4ce794b7 5611func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5612{
e86ce104 5613 struct bfd_link_info *info;
65f38f15 5614 struct ppc_link_hash_table *htab;
411e1bfb 5615 struct plt_entry *ent;
50bc7936
AM
5616 struct ppc_link_hash_entry *fh;
5617 struct ppc_link_hash_entry *fdh;
5618 bfd_boolean force_local;
5bd4f169 5619
50bc7936
AM
5620 fh = (struct ppc_link_hash_entry *) h;
5621 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5622 return TRUE;
e86ce104 5623
50bc7936
AM
5624 if (fh->elf.root.type == bfd_link_hash_warning)
5625 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5626
4ce794b7 5627 info = inf;
65f38f15 5628 htab = ppc_hash_table (info);
5bd4f169 5629
c09bdfe5
AM
5630 /* Resolve undefined references to dot-symbols as the value
5631 in the function descriptor, if we have one in a regular object.
5632 This is to satisfy cases like ".quad .foo". Calls to functions
5633 in dynamic objects are handled elsewhere. */
5634 if (fh->elf.root.type == bfd_link_hash_undefweak
5635 && fh->was_undefined
5636 && (fh->oh->elf.root.type == bfd_link_hash_defined
5637 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5638 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5639 && opd_entry_value (fh->oh->elf.root.u.def.section,
5640 fh->oh->elf.root.u.def.value,
5641 &fh->elf.root.u.def.section,
5642 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5643 {
5644 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5645 fh->elf.forced_local = 1;
2b953679
AM
5646 fh->elf.def_regular = fh->oh->elf.def_regular;
5647 fh->elf.def_dynamic = fh->oh->elf.def_dynamic;
c09bdfe5
AM
5648 }
5649
e86ce104
AM
5650 /* If this is a function code symbol, transfer dynamic linking
5651 information to the function descriptor symbol. */
50bc7936 5652 if (!fh->is_func)
b34976b6 5653 return TRUE;
e86ce104 5654
50bc7936 5655 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
5656 if (ent->plt.refcount > 0)
5657 break;
50bc7936
AM
5658 if (ent == NULL
5659 || fh->elf.root.root.string[0] != '.'
5660 || fh->elf.root.root.string[1] == '\0')
5661 return TRUE;
5bd4f169 5662
50bc7936
AM
5663 /* Find the corresponding function descriptor symbol. Create it
5664 as undefined if necessary. */
5bd4f169 5665
50bc7936
AM
5666 fdh = get_fdh (fh, htab);
5667 if (fdh != NULL)
5668 while (fdh->elf.root.type == bfd_link_hash_indirect
5669 || fdh->elf.root.type == bfd_link_hash_warning)
5670 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5671
50bc7936
AM
5672 if (fdh == NULL
5673 && info->shared
5674 && (fh->elf.root.type == bfd_link_hash_undefined
5675 || fh->elf.root.type == bfd_link_hash_undefweak))
5676 {
908b32fc 5677 fdh = make_fdh (info, fh);
bb700d78
AM
5678 if (fdh == NULL)
5679 return FALSE;
50bc7936 5680 }
648cca2c 5681
908b32fc 5682 /* Fake function descriptors are made undefweak. If the function
433817dd
AM
5683 code symbol is strong undefined, make the fake sym the same.
5684 If the function code symbol is defined, then force the fake
5685 descriptor local; We can't support overriding of symbols in a
5686 shared library on a fake descriptor. */
908b32fc
AM
5687
5688 if (fdh != NULL
5689 && fdh->fake
433817dd 5690 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5691 {
433817dd
AM
5692 if (fh->elf.root.type == bfd_link_hash_undefined)
5693 {
5694 fdh->elf.root.type = bfd_link_hash_undefined;
5695 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5696 }
5697 else if (fh->elf.root.type == bfd_link_hash_defined
5698 || fh->elf.root.type == bfd_link_hash_defweak)
5699 {
5700 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5701 }
908b32fc
AM
5702 }
5703
50bc7936 5704 if (fdh != NULL
f5385ebf 5705 && !fdh->elf.forced_local
50bc7936 5706 && (info->shared
f5385ebf
AM
5707 || fdh->elf.def_dynamic
5708 || fdh->elf.ref_dynamic
50bc7936
AM
5709 || (fdh->elf.root.type == bfd_link_hash_undefweak
5710 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5711 {
5712 if (fdh->elf.dynindx == -1)
c152c796 5713 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5714 return FALSE;
f5385ebf
AM
5715 fdh->elf.ref_regular |= fh->elf.ref_regular;
5716 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5717 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5718 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5719 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5720 {
40d16e0b 5721 move_plt_plist (fh, fdh);
f5385ebf 5722 fdh->elf.needs_plt = 1;
e86ce104 5723 }
50bc7936 5724 fdh->is_func_descriptor = 1;
34814b9f
AM
5725 fdh->oh = fh;
5726 fh->oh = fdh;
e86ce104
AM
5727 }
5728
50bc7936
AM
5729 /* Now that the info is on the function descriptor, clear the
5730 function code sym info. Any function code syms for which we
5731 don't have a definition in a regular file, we force local.
5732 This prevents a shared library from exporting syms that have
5733 been imported from another library. Function code syms that
5734 are really in the library we must leave global to prevent the
5735 linker dragging in a definition from a static library. */
93f3fa99
AM
5736 force_local = (!fh->elf.def_regular
5737 || fdh == NULL
5738 || !fdh->elf.def_regular
5739 || fdh->elf.forced_local);
50bc7936
AM
5740 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5741
b34976b6 5742 return TRUE;
e86ce104 5743}
40b8271b 5744
e86ce104 5745/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM
5746 this hook to a) provide some gcc support functions, and b) transfer
5747 dynamic linking information gathered so far on function code symbol
5748 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5749
b34976b6 5750static bfd_boolean
4ce794b7
AM
5751ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5752 struct bfd_link_info *info)
e86ce104
AM
5753{
5754 struct ppc_link_hash_table *htab;
82bd7b59 5755 unsigned int i;
deb0e272
AM
5756 const struct sfpr_def_parms funcs[] =
5757 {
5758 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5759 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5760 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5761 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5762 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5763 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5764 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5765 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5766 { "._savef", 14, 31, savefpr, savefpr1_tail },
5767 { "._restf", 14, 31, restfpr, restfpr1_tail },
5768 { "_savevr_", 20, 31, savevr, savevr_tail },
5769 { "_restvr_", 20, 31, restvr, restvr_tail }
5770 };
e86ce104
AM
5771
5772 htab = ppc_hash_table (info);
82bd7b59
AM
5773 if (htab->sfpr == NULL)
5774 /* We don't have any relocs. */
b34976b6 5775 return TRUE;
82bd7b59 5776
deb0e272
AM
5777 /* Provide any missing _save* and _rest* functions. */
5778 htab->sfpr->size = 0;
5779 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5780 if (!sfpr_define (info, &funcs[i]))
5781 return FALSE;
82bd7b59 5782
4ce794b7 5783 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5784
eea6121a 5785 if (htab->sfpr->size == 0)
8423293d 5786 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5787
b34976b6 5788 return TRUE;
e86ce104
AM
5789}
5790
5791/* Adjust a symbol defined by a dynamic object and referenced by a
5792 regular object. The current definition is in some section of the
5793 dynamic object, but we're not including those sections. We have to
5794 change the definition to something the rest of the link can
5795 understand. */
5796
b34976b6 5797static bfd_boolean
4ce794b7
AM
5798ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5799 struct elf_link_hash_entry *h)
e86ce104
AM
5800{
5801 struct ppc_link_hash_table *htab;
e86ce104 5802 asection *s;
e86ce104
AM
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
b186458a
JJ
5854 /* Don't generate a copy reloc for symbols defined in the executable. */
5855 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
5856 return TRUE;
5857
f4656909 5858 if (ELIMINATE_COPY_RELOCS)
65f38f15 5859 {
f4656909
AM
5860 struct ppc_link_hash_entry * eh;
5861 struct ppc_dyn_relocs *p;
65f38f15 5862
f4656909
AM
5863 eh = (struct ppc_link_hash_entry *) h;
5864 for (p = eh->dyn_relocs; p != NULL; p = p->next)
5865 {
5866 s = p->sec->output_section;
5867 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5868 break;
5869 }
5870
5871 /* If we didn't find any dynamic relocs in read-only sections, then
5872 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5873 if (p == NULL)
5874 {
f5385ebf 5875 h->non_got_ref = 0;
f4656909
AM
5876 return TRUE;
5877 }
65f38f15
AM
5878 }
5879
5d35169e 5880 if (h->plt.plist != NULL)
97b639ba
AM
5881 {
5882 /* We should never get here, but unfortunately there are versions
5883 of gcc out there that improperly (for this ABI) put initialized
5884 function pointers, vtable refs and suchlike in read-only
5885 sections. Allow them to proceed, but warn that this might
5886 break at runtime. */
5887 (*_bfd_error_handler)
5888 (_("copy reloc against `%s' requires lazy plt linking; "
5889 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5890 h->root.root.string);
5891 }
5d35169e
AM
5892
5893 /* This is a reference to a symbol defined by a dynamic object which
5894 is not a function. */
5895
909272ee
AM
5896 if (h->size == 0)
5897 {
5898 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5899 h->root.root.string);
5900 return TRUE;
5901 }
5902
5bd4f169
AM
5903 /* We must allocate the symbol in our .dynbss section, which will
5904 become part of the .bss section of the executable. There will be
5905 an entry for this symbol in the .dynsym section. The dynamic
5906 object will contain position independent code, so all references
5907 from the dynamic object to this symbol will go through the global
5908 offset table. The dynamic linker will use the .dynsym entry to
5909 determine the address it must put in the global offset table, so
5910 both the dynamic object and the regular object will refer to the
5911 same memory location for the variable. */
5bd4f169 5912
04c9666a
AM
5913 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5914 to copy the initial value out of the dynamic object and into the
5bd4f169
AM
5915 runtime process image. We need to remember the offset into the
5916 .rela.bss section we are going to use. */
5917 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5918 {
eea6121a 5919 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 5920 h->needs_copy = 1;
5bd4f169
AM
5921 }
5922
4ce794b7 5923 s = htab->dynbss;
5bd4f169 5924
027297b7 5925 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM
5926}
5927
e86ce104
AM
5928/* If given a function descriptor symbol, hide both the function code
5929 sym and the descriptor. */
5930static void
4ce794b7
AM
5931ppc64_elf_hide_symbol (struct bfd_link_info *info,
5932 struct elf_link_hash_entry *h,
5933 bfd_boolean force_local)
e86ce104 5934{
34814b9f 5935 struct ppc_link_hash_entry *eh;
e86ce104
AM
5936 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
5937
34814b9f
AM
5938 eh = (struct ppc_link_hash_entry *) h;
5939 if (eh->is_func_descriptor)
e86ce104 5940 {
34814b9f 5941 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 5942
721956f4 5943 if (fh == NULL)
d1329ca3
AM
5944 {
5945 const char *p, *q;
5946 struct ppc_link_hash_table *htab;
5947 char save;
5948
5949 /* We aren't supposed to use alloca in BFD because on
5950 systems which do not have alloca the version in libiberty
5951 calls xmalloc, which might cause the program to crash
5952 when it runs out of memory. This function doesn't have a
5953 return status, so there's no way to gracefully return an
5954 error. So cheat. We know that string[-1] can be safely
34814b9f
AM
5955 accessed; It's either a string in an ELF string table,
5956 or allocated in an objalloc structure. */
d1329ca3 5957
34814b9f 5958 p = eh->elf.root.root.string - 1;
d1329ca3
AM
5959 save = *p;
5960 *(char *) p = '.';
5961 htab = ppc_hash_table (info);
34814b9f
AM
5962 fh = (struct ppc_link_hash_entry *)
5963 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
5964 *(char *) p = save;
5965
5966 /* Unfortunately, if it so happens that the string we were
5967 looking for was allocated immediately before this string,
5968 then we overwrote the string terminator. That's the only
5969 reason the lookup should fail. */
5970 if (fh == NULL)
5971 {
34814b9f
AM
5972 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
5973 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 5974 --q, --p;
34814b9f
AM
5975 if (q < eh->elf.root.root.string && *p == '.')
5976 fh = (struct ppc_link_hash_entry *)
5977 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
5978 }
5979 if (fh != NULL)
5980 {
34814b9f
AM
5981 eh->oh = fh;
5982 fh->oh = eh;
d1329ca3
AM
5983 }
5984 }
e86ce104 5985 if (fh != NULL)
34814b9f 5986 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM
5987 }
5988}
5989
411e1bfb 5990static bfd_boolean
8843416a
AM
5991get_sym_h (struct elf_link_hash_entry **hp,
5992 Elf_Internal_Sym **symp,
5993 asection **symsecp,
5994 char **tls_maskp,
5995 Elf_Internal_Sym **locsymsp,
5996 unsigned long r_symndx,
5997 bfd *ibfd)
411e1bfb 5998{
0ffa91dd 5999 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM
6000
6001 if (r_symndx >= symtab_hdr->sh_info)
6002 {
6003 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6004 struct elf_link_hash_entry *h;
6005
6006 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6007 while (h->root.type == bfd_link_hash_indirect
6008 || h->root.type == bfd_link_hash_warning)
6009 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6010
6011 if (hp != NULL)
6012 *hp = h;
6013
6014 if (symp != NULL)
6015 *symp = NULL;
6016
6017 if (symsecp != NULL)
6018 {
6019 asection *symsec = NULL;
6020 if (h->root.type == bfd_link_hash_defined
6021 || h->root.type == bfd_link_hash_defweak)
6022 symsec = h->root.u.def.section;
6023 *symsecp = symsec;
6024 }
6025
e7b938ca 6026 if (tls_maskp != NULL)
411e1bfb
AM
6027 {
6028 struct ppc_link_hash_entry *eh;
6029
6030 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6031 *tls_maskp = &eh->tls_mask;
411e1bfb
AM
6032 }
6033 }
6034 else
6035 {
6036 Elf_Internal_Sym *sym;
6037 Elf_Internal_Sym *locsyms = *locsymsp;
6038
6039 if (locsyms == NULL)
6040 {
6041 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6042 if (locsyms == NULL)
6043 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6044 symtab_hdr->sh_info,
6045 0, NULL, NULL, NULL);
6046 if (locsyms == NULL)
6047 return FALSE;
6048 *locsymsp = locsyms;
6049 }
6050 sym = locsyms + r_symndx;
6051
6052 if (hp != NULL)
6053 *hp = NULL;
6054
6055 if (symp != NULL)
6056 *symp = sym;
6057
6058 if (symsecp != NULL)
cb33740c 6059 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 6060
e7b938ca 6061 if (tls_maskp != NULL)
411e1bfb
AM
6062 {
6063 struct got_entry **lgot_ents;
e7b938ca 6064 char *tls_mask;
411e1bfb 6065
e7b938ca 6066 tls_mask = NULL;
411e1bfb
AM
6067 lgot_ents = elf_local_got_ents (ibfd);
6068 if (lgot_ents != NULL)
6069 {
e7b938ca
AM
6070 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6071 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6072 }
e7b938ca 6073 *tls_maskp = tls_mask;
411e1bfb
AM
6074 }
6075 }
6076 return TRUE;
6077}
6078
e7b938ca 6079/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6080 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6081 type suitable for optimization, and 1 otherwise. */
951fd09b
AM
6082
6083static int
0d4792f7
AM
6084get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6085 Elf_Internal_Sym **locsymsp,
4ce794b7 6086 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM
6087{
6088 unsigned long r_symndx;
0d4792f7 6089 int next_r;
411e1bfb
AM
6090 struct elf_link_hash_entry *h;
6091 Elf_Internal_Sym *sym;
6092 asection *sec;
6093 bfd_vma off;
6094
6095 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6096 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6097 return 0;
411e1bfb 6098
e7b938ca 6099 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6100 || sec == NULL
7c8fe5c4 6101 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6102 return 1;
411e1bfb
AM
6103
6104 /* Look inside a TOC section too. */
6105 if (h != NULL)
6106 {
6107 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6108 off = h->root.u.def.value;
6109 }
6110 else
6111 off = sym->st_value;
6112 off += rel->r_addend;
6113 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM
6114 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6115 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6116 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6117 return 0;
0d4792f7
AM
6118 if (toc_symndx != NULL)
6119 *toc_symndx = r_symndx;
6120 if ((h == NULL
6121 || ((h->root.type == bfd_link_hash_defined
6122 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6123 && !h->def_dynamic))
0d4792f7
AM
6124 && (next_r == -1 || next_r == -2))
6125 return 1 - next_r;
951fd09b 6126 return 1;
411e1bfb
AM
6127}
6128
754021d0 6129/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6130 code for the old ABI, these will already have been done. */
754021d0
AM
6131
6132static bfd_boolean
6133adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6134{
6135 struct ppc_link_hash_entry *eh;
6136 asection *sym_sec;
74f0fb50 6137 struct _opd_sec_data *opd;
754021d0
AM
6138
6139 if (h->root.type == bfd_link_hash_indirect)
6140 return TRUE;
6141
6142 if (h->root.type == bfd_link_hash_warning)
6143 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6144
6145 if (h->root.type != bfd_link_hash_defined
6146 && h->root.type != bfd_link_hash_defweak)
6147 return TRUE;
6148
6149 eh = (struct ppc_link_hash_entry *) h;
6150 if (eh->adjust_done)
6151 return TRUE;
6152
6153 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM
6154 opd = get_opd_info (sym_sec);
6155 if (opd != NULL && opd->adjust != NULL)
754021d0 6156 {
74f0fb50 6157 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM
6158 if (adjust == -1)
6159 {
6160 /* This entry has been deleted. */
b3fac117 6161 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM
6162 if (dsec == NULL)
6163 {
6164 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6165 if (elf_discarded_section (dsec))
6166 {
b3fac117 6167 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM
6168 break;
6169 }
6170 }
4025353c 6171 eh->elf.root.u.def.value = 0;
81688140 6172 eh->elf.root.u.def.section = dsec;
4025353c
AM
6173 }
6174 else
6175 eh->elf.root.u.def.value += adjust;
754021d0
AM
6176 eh->adjust_done = 1;
6177 }
6178 return TRUE;
6179}
6180
8c1d1bb8
AM
6181/* Handles decrementing dynamic reloc counts for the reloc specified by
6182 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6183 have already been determined. */
6184
6185static bfd_boolean
6186dec_dynrel_count (bfd_vma r_info,
6187 asection *sec,
6188 struct bfd_link_info *info,
6189 Elf_Internal_Sym **local_syms,
6190 struct elf_link_hash_entry *h,
6191 asection *sym_sec)
6192{
6193 enum elf_ppc64_reloc_type r_type;
6194 struct ppc_dyn_relocs *p;
6195 struct ppc_dyn_relocs **pp;
6196
6197 /* Can this reloc be dynamic? This switch, and later tests here
6198 should be kept in sync with the code in check_relocs. */
6199 r_type = ELF64_R_TYPE (r_info);
6200 switch (r_type)
6201 {
6202 default:
6203 return TRUE;
6204
6205 case R_PPC64_TPREL16:
6206 case R_PPC64_TPREL16_LO:
6207 case R_PPC64_TPREL16_HI:
6208 case R_PPC64_TPREL16_HA:
6209 case R_PPC64_TPREL16_DS:
6210 case R_PPC64_TPREL16_LO_DS:
6211 case R_PPC64_TPREL16_HIGHER:
6212 case R_PPC64_TPREL16_HIGHERA:
6213 case R_PPC64_TPREL16_HIGHEST:
6214 case R_PPC64_TPREL16_HIGHESTA:
6215 if (!info->shared)
6216 return TRUE;
6217
6218 case R_PPC64_TPREL64:
6219 case R_PPC64_DTPMOD64:
6220 case R_PPC64_DTPREL64:
6221 case R_PPC64_ADDR64:
6222 case R_PPC64_REL30:
6223 case R_PPC64_REL32:
6224 case R_PPC64_REL64:
6225 case R_PPC64_ADDR14:
6226 case R_PPC64_ADDR14_BRNTAKEN:
6227 case R_PPC64_ADDR14_BRTAKEN:
6228 case R_PPC64_ADDR16:
6229 case R_PPC64_ADDR16_DS:
6230 case R_PPC64_ADDR16_HA:
6231 case R_PPC64_ADDR16_HI:
6232 case R_PPC64_ADDR16_HIGHER:
6233 case R_PPC64_ADDR16_HIGHERA:
6234 case R_PPC64_ADDR16_HIGHEST:
6235 case R_PPC64_ADDR16_HIGHESTA:
6236 case R_PPC64_ADDR16_LO:
6237 case R_PPC64_ADDR16_LO_DS:
6238 case R_PPC64_ADDR24:
6239 case R_PPC64_ADDR32:
6240 case R_PPC64_UADDR16:
6241 case R_PPC64_UADDR32:
6242 case R_PPC64_UADDR64:
6243 case R_PPC64_TOC:
6244 break;
6245 }
6246
6247 if (local_syms != NULL)
6248 {
6249 unsigned long r_symndx;
6250 Elf_Internal_Sym *sym;
6251 bfd *ibfd = sec->owner;
6252
6253 r_symndx = ELF64_R_SYM (r_info);
6254 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6255 return FALSE;
6256 }
6257
6258 if ((info->shared
6259 && (MUST_BE_DYN_RELOC (r_type)
6260 || (h != NULL
6261 && (!info->symbolic
6262 || h->root.type == bfd_link_hash_defweak
6263 || !h->def_regular))))
6264 || (ELIMINATE_COPY_RELOCS
6265 && !info->shared
6266 && h != NULL
6267 && (h->root.type == bfd_link_hash_defweak
6268 || !h->def_regular)))
6269 ;
6270 else
6271 return TRUE;
6272
6273 if (h != NULL)
6274 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6275 else
6edfbbad 6276 {
60124e18
AM
6277 if (sym_sec != NULL)
6278 {
6279 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6280 pp = (struct ppc_dyn_relocs **) vpp;
6281 }
6282 else
6283 {
6284 void *vpp = &elf_section_data (sec)->local_dynrel;
6285 pp = (struct ppc_dyn_relocs **) vpp;
6286 }
6287
6288 /* elf_gc_sweep may have already removed all dyn relocs associated
6289 with local syms for a given section. Don't report a dynreloc
6290 miscount. */
6291 if (*pp == NULL)
6292 return TRUE;
6edfbbad 6293 }
8c1d1bb8
AM
6294
6295 while ((p = *pp) != NULL)
6296 {
6297 if (p->sec == sec)
6298 {
6299 if (!MUST_BE_DYN_RELOC (r_type))
6300 p->pc_count -= 1;
6301 p->count -= 1;
6302 if (p->count == 0)
6303 *pp = p->next;
6304 return TRUE;
6305 }
6306 pp = &p->next;
6307 }
6308
6309 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6310 sec->owner, sec);
6311 bfd_set_error (bfd_error_bad_value);
6312 return FALSE;
6313}
6314
754021d0
AM
6315/* Remove unused Official Procedure Descriptor entries. Currently we
6316 only remove those associated with functions in discarded link-once
6317 sections, or weakly defined functions that have been overridden. It
6318 would be possible to remove many more entries for statically linked
6319 applications. */
6320
b34976b6 6321bfd_boolean
3f764659
JJ
6322ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6323 bfd_boolean non_overlapping)
1e2f5b6e
AM
6324{
6325 bfd *ibfd;
754021d0 6326 bfd_boolean some_edited = FALSE;
3f764659 6327 asection *need_pad = NULL;
1e2f5b6e 6328
411e1bfb 6329 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM
6330 {
6331 asection *sec;
6332 Elf_Internal_Rela *relstart, *rel, *relend;
6333 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6334 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM
6335 struct elf_link_hash_entry **sym_hashes;
6336 bfd_vma offset;
74f0fb50 6337 struct _opd_sec_data *opd;
3f764659
JJ
6338 bfd_boolean need_edit, add_aux_fields;
6339 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM
6340
6341 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6342 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM
6343 continue;
6344
4b85d634
AM
6345 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6346 continue;
6347
1e2f5b6e
AM
6348 if (sec->output_section == bfd_abs_section_ptr)
6349 continue;
6350
6351 /* Look through the section relocs. */
6352 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6353 continue;
6354
6cdc0ccc 6355 local_syms = NULL;
0ffa91dd 6356 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM
6357 sym_hashes = elf_sym_hashes (ibfd);
6358
6359 /* Read the relocations. */
4ce794b7 6360 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6361 info->keep_memory);
1e2f5b6e 6362 if (relstart == NULL)
b34976b6 6363 return FALSE;
1e2f5b6e
AM
6364
6365 /* First run through the relocs to check they are sane, and to
6366 determine whether we need to edit this opd section. */
b34976b6 6367 need_edit = FALSE;
3f764659 6368 need_pad = sec;
1e2f5b6e
AM
6369 offset = 0;
6370 relend = relstart + sec->reloc_count;
50bc7936 6371 for (rel = relstart; rel < relend; )
1e2f5b6e 6372 {
04c9666a 6373 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM
6374 unsigned long r_symndx;
6375 asection *sym_sec;
6376 struct elf_link_hash_entry *h;
6377 Elf_Internal_Sym *sym;
6378
3f764659 6379 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM
6380 only interested in the reloc pointing to a function entry
6381 point. */
50bc7936
AM
6382 if (rel->r_offset != offset
6383 || rel + 1 >= relend
6384 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM
6385 {
6386 /* If someone messes with .opd alignment then after a
6387 "ld -r" we might have padding in the middle of .opd.
6388 Also, there's nothing to prevent someone putting
6389 something silly in .opd with the assembler. No .opd
b34976b6 6390 optimization for them! */
3f764659 6391 broken_opd:
1e2f5b6e 6392 (*_bfd_error_handler)
d003868e 6393 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6394 need_edit = FALSE;
1e2f5b6e
AM
6395 break;
6396 }
6397
50bc7936
AM
6398 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6399 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6400 {
6401 (*_bfd_error_handler)
d003868e
AM
6402 (_("%B: unexpected reloc type %u in .opd section"),
6403 ibfd, r_type);
50bc7936
AM
6404 need_edit = FALSE;
6405 break;
6406 }
6407
1e2f5b6e 6408 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM
6409 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6410 r_symndx, ibfd))
50bc7936 6411 goto error_ret;
1e2f5b6e
AM
6412
6413 if (sym_sec == NULL || sym_sec->owner == NULL)
6414 {
411e1bfb
AM
6415 const char *sym_name;
6416 if (h != NULL)
6417 sym_name = h->root.root.string;
6418 else
26c61ae5
L
6419 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6420 sym_sec);
411e1bfb 6421
1e2f5b6e 6422 (*_bfd_error_handler)
d003868e
AM
6423 (_("%B: undefined sym `%s' in .opd section"),
6424 ibfd, sym_name);
b34976b6 6425 need_edit = FALSE;
1e2f5b6e
AM
6426 break;
6427 }
6428
51020317
AM
6429 /* opd entries are always for functions defined in the
6430 current input bfd. If the symbol isn't defined in the
6431 input bfd, then we won't be using the function in this
6432 bfd; It must be defined in a linkonce section in another
6433 bfd, or is weak. It's also possible that we are
6434 discarding the function due to a linker script /DISCARD/,
6435 which we test for via the output_section. */
6436 if (sym_sec->owner != ibfd
6437 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6438 need_edit = TRUE;
1e2f5b6e 6439
50bc7936 6440 rel += 2;
3f764659
JJ
6441 if (rel == relend
6442 || (rel + 1 == relend && rel->r_offset == offset + 16))
6443 {
6444 if (sec->size == offset + 24)
6445 {
6446 need_pad = NULL;
6447 break;
6448 }
6449 if (rel == relend && sec->size == offset + 16)
6450 {
6451 cnt_16b++;
6452 break;
6453 }
6454 goto broken_opd;
6455 }
6456
6457 if (rel->r_offset == offset + 24)
6458 offset += 24;
6459 else if (rel->r_offset != offset + 16)
6460 goto broken_opd;
6461 else if (rel + 1 < relend
6462 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6463 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6464 {
6465 offset += 16;
6466 cnt_16b++;
6467 }
6468 else if (rel + 2 < relend
6469 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6470 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6471 {
6472 offset += 24;
6473 rel += 1;
6474 }
6475 else
6476 goto broken_opd;
1e2f5b6e
AM
6477 }
6478
3f764659
JJ
6479 add_aux_fields = non_overlapping && cnt_16b > 0;
6480
6481 if (need_edit || add_aux_fields)
1e2f5b6e
AM
6482 {
6483 Elf_Internal_Rela *write_rel;
6484 bfd_byte *rptr, *wptr;
3f764659 6485 bfd_byte *new_contents = NULL;
b34976b6 6486 bfd_boolean skip;
3f764659 6487 long opd_ent_size;
74f0fb50
AM
6488 bfd_size_type amt;
6489
6490 amt = sec->size * sizeof (long) / 8;
6491 opd = &ppc64_elf_section_data (sec)->u.opd;
6492 opd->adjust = bfd_zalloc (obfd, amt);
6493 if (opd->adjust == NULL)
6494 return FALSE;
6495 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM
6496
6497 /* This seems a waste of time as input .opd sections are all
6498 zeros as generated by gcc, but I suppose there's no reason
6499 this will always be so. We might start putting something in
6500 the third word of .opd entries. */
6501 if ((sec->flags & SEC_IN_MEMORY) == 0)
6502 {
eea6121a
AM
6503 bfd_byte *loc;
6504 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6505 {
eea6121a
AM
6506 if (loc != NULL)
6507 free (loc);
50bc7936 6508 error_ret:
6cdc0ccc
AM
6509 if (local_syms != NULL
6510 && symtab_hdr->contents != (unsigned char *) local_syms)
6511 free (local_syms);
6cdc0ccc
AM
6512 if (elf_section_data (sec)->relocs != relstart)
6513 free (relstart);
b34976b6 6514 return FALSE;
6cdc0ccc 6515 }
1e2f5b6e
AM
6516 sec->contents = loc;
6517 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6518 }
6519
6520 elf_section_data (sec)->relocs = relstart;
6521
3f764659 6522 new_contents = sec->contents;
3f764659
JJ
6523 if (add_aux_fields)
6524 {
6525 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6526 if (new_contents == NULL)
6527 return FALSE;
6528 need_pad = FALSE;
3f764659 6529 }
b4f4e59f
AM
6530 wptr = new_contents;
6531 rptr = sec->contents;
3f764659 6532
1e2f5b6e 6533 write_rel = relstart;
b34976b6 6534 skip = FALSE;
1e2f5b6e 6535 offset = 0;
3f764659 6536 opd_ent_size = 0;
1e2f5b6e
AM
6537 for (rel = relstart; rel < relend; rel++)
6538 {
50bc7936
AM
6539 unsigned long r_symndx;
6540 asection *sym_sec;
6541 struct elf_link_hash_entry *h;
6542 Elf_Internal_Sym *sym;
6543
6544 r_symndx = ELF64_R_SYM (rel->r_info);
6545 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6546 r_symndx, ibfd))
50bc7936
AM
6547 goto error_ret;
6548
1e2f5b6e
AM
6549 if (rel->r_offset == offset)
6550 {
50bc7936 6551 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ
6552
6553 /* See if the .opd entry is full 24 byte or
6554 16 byte (with fd_aux entry overlapped with next
6555 fd_func). */
6556 opd_ent_size = 24;
6557 if ((rel + 2 == relend && sec->size == offset + 16)
6558 || (rel + 3 < relend
6559 && rel[2].r_offset == offset + 16
6560 && rel[3].r_offset == offset + 24
6561 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6562 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6563 opd_ent_size = 16;
6564
4025353c
AM
6565 if (h != NULL
6566 && h->root.root.string[0] == '.')
c4f68ce3
AM
6567 {
6568 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6569 ppc_hash_table (info));
6570 if (fdh != NULL
6571 && fdh->elf.root.type != bfd_link_hash_defined
6572 && fdh->elf.root.type != bfd_link_hash_defweak)
6573 fdh = NULL;
6574 }
1e2f5b6e 6575
51020317
AM
6576 skip = (sym_sec->owner != ibfd
6577 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM
6578 if (skip)
6579 {
4025353c 6580 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM
6581 {
6582 /* Arrange for the function descriptor sym
6583 to be dropped. */
d6fe2dc1
AM
6584 fdh->elf.root.u.def.value = 0;
6585 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6586 }
74f0fb50 6587 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM
6588 }
6589 else
1e2f5b6e
AM
6590 {
6591 /* We'll be keeping this opd entry. */
6592
4025353c 6593 if (fdh != NULL)
1e2f5b6e 6594 {
754021d0
AM
6595 /* Redefine the function descriptor symbol to
6596 this location in the opd section. It is
6597 necessary to update the value here rather
6598 than using an array of adjustments as we do
6599 for local symbols, because various places
6600 in the generic ELF code use the value
6601 stored in u.def.value. */
3f764659 6602 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6603 fdh->adjust_done = 1;
1e2f5b6e 6604 }
754021d0
AM
6605
6606 /* Local syms are a bit tricky. We could
6607 tweak them as they can be cached, but
6608 we'd need to look through the local syms
6609 for the function descriptor sym which we
6610 don't have at the moment. So keep an
6611 array of adjustments. */
74f0fb50 6612 opd->adjust[rel->r_offset / 8]
3f764659 6613 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM
6614
6615 if (wptr != rptr)
3f764659
JJ
6616 memcpy (wptr, rptr, opd_ent_size);
6617 wptr += opd_ent_size;
6618 if (add_aux_fields && opd_ent_size == 16)
6619 {
6620 memset (wptr, '\0', 8);
6621 wptr += 8;
6622 }
1e2f5b6e 6623 }
3f764659
JJ
6624 rptr += opd_ent_size;
6625 offset += opd_ent_size;
1e2f5b6e
AM
6626 }
6627
50bc7936
AM
6628 if (skip)
6629 {
60124e18
AM
6630 if (!NO_OPD_RELOCS
6631 && !info->relocatable
18d944df
AM
6632 && !dec_dynrel_count (rel->r_info, sec, info,
6633 NULL, h, sym_sec))
8c1d1bb8 6634 goto error_ret;
50bc7936
AM
6635 }
6636 else
1e2f5b6e 6637 {
50bc7936
AM
6638 /* We need to adjust any reloc offsets to point to the
6639 new opd entries. While we're at it, we may as well
6640 remove redundant relocs. */
74f0fb50 6641 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM
6642 if (write_rel != rel)
6643 memcpy (write_rel, rel, sizeof (*rel));
6644 ++write_rel;
6645 }
6646 }
6647
3f764659 6648 sec->size = wptr - new_contents;
1e2f5b6e 6649 sec->reloc_count = write_rel - relstart;
3f764659
JJ
6650 if (add_aux_fields)
6651 {
6652 free (sec->contents);
6653 sec->contents = new_contents;
6654 }
6655
05bf9422 6656 /* Fudge the header size too, as this is used later in
cdcf6e38
AM
6657 elf_bfd_final_link if we are emitting relocs. */
6658 elf_section_data (sec)->rel_hdr.sh_size
6659 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6660 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6661 some_edited = TRUE;
1e2f5b6e 6662 }
6cdc0ccc 6663 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6664 free (relstart);
6cdc0ccc 6665
411e1bfb
AM
6666 if (local_syms != NULL
6667 && symtab_hdr->contents != (unsigned char *) local_syms)
6668 {
6669 if (!info->keep_memory)
6670 free (local_syms);
6671 else
6672 symtab_hdr->contents = (unsigned char *) local_syms;
6673 }
6674 }
6675
754021d0
AM
6676 if (some_edited)
6677 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6678
3f764659
JJ
6679 /* If we are doing a final link and the last .opd entry is just 16 byte
6680 long, add a 8 byte padding after it. */
6681 if (need_pad != NULL && !info->relocatable)
6682 {
6683 bfd_byte *p;
6684
6685 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6686 {
6687 BFD_ASSERT (need_pad->size > 0);
6688
6689 p = bfd_malloc (need_pad->size + 8);
6690 if (p == NULL)
6691 return FALSE;
699733f6 6692
3f764659
JJ
6693 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6694 p, 0, need_pad->size))
6695 return FALSE;
6696
6697 need_pad->contents = p;
6698 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6699 }
6700 else
6701 {
6702 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6703 if (p == NULL)
6704 return FALSE;
6705
6706 need_pad->contents = p;
6707 }
6708
6709 memset (need_pad->contents + need_pad->size, 0, 8);
6710 need_pad->size += 8;
6711 }
6712
411e1bfb
AM
6713 return TRUE;
6714}
6715
e1918d23 6716/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6717
e1918d23 6718asection *
4ce794b7 6719ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6720{
411e1bfb
AM
6721 struct ppc_link_hash_table *htab;
6722
411e1bfb 6723 htab = ppc_hash_table (info);
a48ebf4d
AM
6724 if (htab->tls_get_addr != NULL)
6725 {
8387904d 6726 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6727
8387904d
AM
6728 while (h->elf.root.type == bfd_link_hash_indirect
6729 || h->elf.root.type == bfd_link_hash_warning)
6730 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM
6731
6732 htab->tls_get_addr = h;
8387904d
AM
6733
6734 if (htab->tls_get_addr_fd == NULL
6735 && h->oh != NULL
c4f68ce3
AM
6736 && h->oh->is_func_descriptor
6737 && (h->oh->elf.root.type == bfd_link_hash_defined
6738 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM
6739 htab->tls_get_addr_fd = h->oh;
6740 }
6741
6742 if (htab->tls_get_addr_fd != NULL)
6743 {
6744 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6745
6746 while (h->elf.root.type == bfd_link_hash_indirect
6747 || h->elf.root.type == bfd_link_hash_warning)
6748 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6749
6750 htab->tls_get_addr_fd = h;
a48ebf4d
AM
6751 }
6752
e1918d23 6753 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6754}
411e1bfb 6755
951fd09b
AM
6756/* Run through all the TLS relocs looking for optimization
6757 opportunities. The linker has been hacked (see ppc64elf.em) to do
6758 a preliminary section layout so that we know the TLS segment
6759 offsets. We can't optimize earlier because some optimizations need
6760 to know the tp offset, and we need to optimize before allocating
6761 dynamic relocations. */
6762
6763bfd_boolean
4ce794b7 6764ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM
6765{
6766 bfd *ibfd;
6767 asection *sec;
6768 struct ppc_link_hash_table *htab;
102890f0 6769 int pass;
951fd09b 6770
1049f94e 6771 if (info->relocatable || info->shared)
411e1bfb
AM
6772 return TRUE;
6773
951fd09b 6774 htab = ppc_hash_table (info);
411e1bfb
AM
6775 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6776 {
6777 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM
6778 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6779 unsigned char *toc_ref = NULL;
411e1bfb 6780
102890f0
AM
6781 /* Look at all the sections for this file. Make two passes over
6782 the relocs. On the first pass, mark toc entries involved
6783 with tls relocs, and check that tls relocs involved in
6784 setting up a tls_get_addr call are indeed followed by such a
6785 call. If they are not, exclude them from the optimizations
6786 done on the second pass. */
6787 for (pass = 0; pass < 2; ++pass)
6788 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6789 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6790 {
6791 Elf_Internal_Rela *relstart, *rel, *relend;
411e1bfb 6792
102890f0
AM
6793 /* Read the relocations. */
6794 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6795 info->keep_memory);
6796 if (relstart == NULL)
6797 return FALSE;
411e1bfb 6798
102890f0
AM
6799 relend = relstart + sec->reloc_count;
6800 for (rel = relstart; rel < relend; rel++)
6801 {
6802 enum elf_ppc64_reloc_type r_type;
6803 unsigned long r_symndx;
6804 struct elf_link_hash_entry *h;
6805 Elf_Internal_Sym *sym;
6806 asection *sym_sec;
6807 char *tls_mask;
6808 char tls_set, tls_clear, tls_type = 0;
6809 bfd_vma value;
6810 bfd_boolean ok_tprel, is_local;
6811 long toc_ref_index = 0;
6812 int expecting_tls_get_addr = 0;
411e1bfb 6813
102890f0
AM
6814 r_symndx = ELF64_R_SYM (rel->r_info);
6815 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6816 r_symndx, ibfd))
6817 {
6818 err_free_rel:
6819 if (elf_section_data (sec)->relocs != relstart)
6820 free (relstart);
6821 if (toc_ref != NULL)
6822 free (toc_ref);
6823 if (locsyms != NULL
0ffa91dd 6824 && (elf_symtab_hdr (ibfd).contents
102890f0
AM
6825 != (unsigned char *) locsyms))
6826 free (locsyms);
6827 return FALSE;
6828 }
411e1bfb 6829
102890f0
AM
6830 if (h != NULL)
6831 {
6832 if (h->root.type != bfd_link_hash_defined
6833 && h->root.type != bfd_link_hash_defweak)
6834 continue;
6835 value = h->root.u.def.value;
6836 }
6837 else
6838 /* Symbols referenced by TLS relocs must be of type
6839 STT_TLS. So no need for .opd local sym adjust. */
6840 value = sym->st_value;
6841
6842 ok_tprel = FALSE;
6843 is_local = FALSE;
6844 if (h == NULL
6845 || !h->def_dynamic)
6846 {
6847 is_local = TRUE;
6848 value += sym_sec->output_offset;
6849 value += sym_sec->output_section->vma;
6850 value -= htab->elf.tls_sec->vma;
6851 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6852 < (bfd_vma) 1 << 32);
6853 }
951fd09b 6854
102890f0
AM
6855 r_type = ELF64_R_TYPE (rel->r_info);
6856 switch (r_type)
6857 {
6858 case R_PPC64_GOT_TLSLD16:
6859 case R_PPC64_GOT_TLSLD16_LO:
6860 expecting_tls_get_addr = 1;
6861 /* Fall thru */
6862
6863 case R_PPC64_GOT_TLSLD16_HI:
6864 case R_PPC64_GOT_TLSLD16_HA:
6865 /* These relocs should never be against a symbol
6866 defined in a shared lib. Leave them alone if
6867 that turns out to be the case. */
6868 if (!is_local)
6869 continue;
411e1bfb 6870
102890f0 6871 /* LD -> LE */
411e1bfb 6872 tls_set = 0;
102890f0
AM
6873 tls_clear = TLS_LD;
6874 tls_type = TLS_TLS | TLS_LD;
6875 break;
411e1bfb 6876
102890f0
AM
6877 case R_PPC64_GOT_TLSGD16:
6878 case R_PPC64_GOT_TLSGD16_LO:
6879 expecting_tls_get_addr = 1;
6880 /* Fall thru */
6881
6882 case R_PPC64_GOT_TLSGD16_HI:
6883 case R_PPC64_GOT_TLSGD16_HA:
6884 if (ok_tprel)
6885 /* GD -> LE */
411e1bfb 6886 tls_set = 0;
102890f0
AM
6887 else
6888 /* GD -> IE */
6889 tls_set = TLS_TLS | TLS_TPRELGD;
6890 tls_clear = TLS_GD;
6891 tls_type = TLS_TLS | TLS_GD;
6892 break;
6893
6894 case R_PPC64_GOT_TPREL16_DS:
6895 case R_PPC64_GOT_TPREL16_LO_DS:
6896 case R_PPC64_GOT_TPREL16_HI:
6897 case R_PPC64_GOT_TPREL16_HA:
6898 if (ok_tprel)
6899 {
6900 /* IE -> LE */
6901 tls_set = 0;
6902 tls_clear = TLS_TPREL;
6903 tls_type = TLS_TLS | TLS_TPREL;
6904 break;
6905 }
411e1bfb
AM
6906 continue;
6907
102890f0
AM
6908 case R_PPC64_TOC16:
6909 case R_PPC64_TOC16_LO:
6910 case R_PPC64_TLS:
6911 if (sym_sec == NULL || sym_sec != toc)
6912 continue;
6913
6914 /* Mark this toc entry as referenced by a TLS
6915 code sequence. We can do that now in the
6916 case of R_PPC64_TLS, and after checking for
6917 tls_get_addr for the TOC16 relocs. */
6918 if (toc_ref == NULL)
6919 {
6920 toc_ref = bfd_zmalloc (toc->size / 8);
6921 if (toc_ref == NULL)
6922 goto err_free_rel;
6923 }
6924 if (h != NULL)
6925 value = h->root.u.def.value;
6926 else
6927 value = sym->st_value;
6928 value += rel->r_addend;
6929 BFD_ASSERT (value < toc->size && value % 8 == 0);
6930 toc_ref_index = value / 8;
6931 if (r_type == R_PPC64_TLS)
6932 {
6933 toc_ref[toc_ref_index] = 1;
6934 continue;
6935 }
6936
6937 if (pass != 0 && toc_ref[toc_ref_index] == 0)
6938 continue;
6939
6940 tls_set = 0;
6941 tls_clear = 0;
6942 expecting_tls_get_addr = 2;
6943 break;
6944
6945 case R_PPC64_TPREL64:
6946 if (pass == 0
6947 || sec != toc
6948 || toc_ref == NULL
6949 || !toc_ref[rel->r_offset / 8])
6950 continue;
6951 if (ok_tprel)
6952 {
6953 /* IE -> LE */
6954 tls_set = TLS_EXPLICIT;
6955 tls_clear = TLS_TPREL;
6956 break;
6957 }
6958 continue;
6959
6960 case R_PPC64_DTPMOD64:
6961 if (pass == 0
6962 || sec != toc
6963 || toc_ref == NULL
6964 || !toc_ref[rel->r_offset / 8])
6965 continue;
6966 if (rel + 1 < relend
6967 && (rel[1].r_info
6968 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
6969 && rel[1].r_offset == rel->r_offset + 8)
6970 {
6971 if (ok_tprel)
6972 /* GD -> LE */
6973 tls_set = TLS_EXPLICIT | TLS_GD;
6974 else
6975 /* GD -> IE */
6976 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
6977 tls_clear = TLS_GD;
6978 }
6979 else
6980 {
6981 if (!is_local)
6982 continue;
6983
6984 /* LD -> LE */
6985 tls_set = TLS_EXPLICIT;
6986 tls_clear = TLS_LD;
6987 }
6988 break;
6989
6990 default:
6991 continue;
6992 }
6993
6994 if (pass == 0)
6995 {
6996 if (!expecting_tls_get_addr)
6997 continue;
6998
6999 if (rel + 1 < relend)
7000 {
7001 Elf_Internal_Shdr *symtab_hdr;
7002 enum elf_ppc64_reloc_type r_type2;
7003 unsigned long r_symndx2;
7004 struct elf_link_hash_entry *h2;
7005
0ffa91dd 7006 symtab_hdr = &elf_symtab_hdr (ibfd);
102890f0
AM
7007
7008 /* The next instruction should be a call to
7009 __tls_get_addr. Peek at the reloc to be sure. */
7010 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7011 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7012 if (r_symndx2 >= symtab_hdr->sh_info
7013 && (r_type2 == R_PPC64_REL14
7014 || r_type2 == R_PPC64_REL14_BRTAKEN
7015 || r_type2 == R_PPC64_REL14_BRNTAKEN
7016 || r_type2 == R_PPC64_REL24))
7017 {
7018 struct elf_link_hash_entry **sym_hashes;
7019
7020 sym_hashes = elf_sym_hashes (ibfd);
7021
7022 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7023 while (h2->root.type == bfd_link_hash_indirect
7024 || h2->root.type == bfd_link_hash_warning)
7025 h2 = ((struct elf_link_hash_entry *)
7026 h2->root.u.i.link);
7027 if (h2 != NULL
7028 && (h2 == &htab->tls_get_addr->elf
7029 || h2 == &htab->tls_get_addr_fd->elf))
7030 {
7031 if (expecting_tls_get_addr == 2)
7032 {
7033 /* Check for toc tls entries. */
7034 char *toc_tls;
7035 int retval;
7036
7037 retval = get_tls_mask (&toc_tls, NULL,
7038 &locsyms,
7039 rel, ibfd);
7040 if (retval == 0)
7041 goto err_free_rel;
7042 if (retval > 1 && toc_tls != NULL)
7043 toc_ref[toc_ref_index] = 1;
7044 }
7045 continue;
7046 }
7047 }
7048 }
7049
7050 if (expecting_tls_get_addr != 1)
7051 continue;
7052
7053 /* Uh oh, we didn't find the expected call. We
7054 could just mark this symbol to exclude it
7055 from tls optimization but it's safer to skip
7056 the entire section. */
7057 sec->has_tls_reloc = 0;
7058 break;
7059 }
7060
85f7a9cb 7061 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM
7062 {
7063 struct plt_entry *ent;
7064 for (ent = htab->tls_get_addr->elf.plt.plist;
7065 ent != NULL;
7066 ent = ent->next)
7067 if (ent->addend == 0)
411e1bfb 7068 {
102890f0 7069 if (ent->plt.refcount > 0)
30038c59 7070 {
102890f0
AM
7071 ent->plt.refcount -= 1;
7072 expecting_tls_get_addr = 0;
30038c59 7073 }
102890f0 7074 break;
411e1bfb 7075 }
102890f0 7076 }
411e1bfb 7077
85f7a9cb 7078 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM
7079 {
7080 struct plt_entry *ent;
7081 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7082 ent != NULL;
7083 ent = ent->next)
7084 if (ent->addend == 0)
411e1bfb 7085 {
102890f0
AM
7086 if (ent->plt.refcount > 0)
7087 ent->plt.refcount -= 1;
7088 break;
411e1bfb 7089 }
102890f0 7090 }
411e1bfb 7091
102890f0 7092 if (tls_clear == 0)
30038c59
AM
7093 continue;
7094
102890f0
AM
7095 if ((tls_set & TLS_EXPLICIT) == 0)
7096 {
7097 struct got_entry *ent;
411e1bfb 7098
102890f0
AM
7099 /* Adjust got entry for this reloc. */
7100 if (h != NULL)
7101 ent = h->got.glist;
7102 else
7103 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7104
102890f0
AM
7105 for (; ent != NULL; ent = ent->next)
7106 if (ent->addend == rel->r_addend
7107 && ent->owner == ibfd
7108 && ent->tls_type == tls_type)
7109 break;
7110 if (ent == NULL)
7111 abort ();
411e1bfb 7112
102890f0
AM
7113 if (tls_set == 0)
7114 {
7115 /* We managed to get rid of a got entry. */
7116 if (ent->got.refcount > 0)
7117 ent->got.refcount -= 1;
7118 }
7119 }
7120 else
7121 {
7122 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7123 we'll lose one or two dyn relocs. */
7124 if (!dec_dynrel_count (rel->r_info, sec, info,
7125 NULL, h, sym_sec))
7126 return FALSE;
411e1bfb 7127
102890f0
AM
7128 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7129 {
7130 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7131 NULL, h, sym_sec))
7132 return FALSE;
7133 }
7134 }
411e1bfb 7135
102890f0
AM
7136 *tls_mask |= tls_set;
7137 *tls_mask &= ~tls_clear;
7138 }
8c1d1bb8 7139
102890f0
AM
7140 if (elf_section_data (sec)->relocs != relstart)
7141 free (relstart);
7142 }
411e1bfb 7143
102890f0
AM
7144 if (toc_ref != NULL)
7145 free (toc_ref);
411e1bfb 7146
102890f0 7147 if (locsyms != NULL
0ffa91dd 7148 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
102890f0
AM
7149 {
7150 if (!info->keep_memory)
7151 free (locsyms);
7152 else
0ffa91dd 7153 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
411e1bfb 7154 }
102890f0 7155 }
b34976b6 7156 return TRUE;
1e2f5b6e 7157}
b34976b6 7158
c5614fa4
AM
7159/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7160 the values of any global symbols in a toc section that has been
7161 edited. Globals in toc sections should be a rarity, so this function
7162 sets a flag if any are found in toc sections other than the one just
7163 edited, so that futher hash table traversals can be avoided. */
7164
7165struct adjust_toc_info
7166{
7167 asection *toc;
7168 unsigned long *skip;
7169 bfd_boolean global_toc_syms;
7170};
7171
7172static bfd_boolean
7173adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7174{
7175 struct ppc_link_hash_entry *eh;
7176 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7177
7178 if (h->root.type == bfd_link_hash_indirect)
7179 return TRUE;
7180
7181 if (h->root.type == bfd_link_hash_warning)
7182 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7183
7184 if (h->root.type != bfd_link_hash_defined
7185 && h->root.type != bfd_link_hash_defweak)
7186 return TRUE;
7187
7188 eh = (struct ppc_link_hash_entry *) h;
7189 if (eh->adjust_done)
7190 return TRUE;
7191
7192 if (eh->elf.root.u.def.section == toc_inf->toc)
7193 {
7194 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7195 if (skip != (unsigned long) -1)
7196 eh->elf.root.u.def.value -= skip;
7197 else
7198 {
7199 (*_bfd_error_handler)
7200 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7201 eh->elf.root.u.def.section = &bfd_abs_section;
7202 eh->elf.root.u.def.value = 0;
7203 }
7204 eh->adjust_done = 1;
7205 }
7206 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7207 toc_inf->global_toc_syms = TRUE;
7208
7209 return TRUE;
7210}
7211
7212/* Examine all relocs referencing .toc sections in order to remove
7213 unused .toc entries. */
7214
7215bfd_boolean
7216ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7217{
7218 bfd *ibfd;
7219 struct adjust_toc_info toc_inf;
7220
7221 toc_inf.global_toc_syms = TRUE;
7222 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7223 {
7224 asection *toc, *sec;
7225 Elf_Internal_Shdr *symtab_hdr;
7226 Elf_Internal_Sym *local_syms;
7227 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7228 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM
7229 unsigned long *skip, *drop;
7230 unsigned char *used;
7231 unsigned char *keep, last, some_unused;
7232
7233 toc = bfd_get_section_by_name (ibfd, ".toc");
7234 if (toc == NULL
92b7a70f 7235 || toc->size == 0
c5614fa4
AM
7236 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7237 || elf_discarded_section (toc))
7238 continue;
7239
7240 local_syms = NULL;
0ffa91dd 7241 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM
7242 sym_hashes = elf_sym_hashes (ibfd);
7243
7244 /* Look at sections dropped from the final link. */
7245 skip = NULL;
7246 relstart = NULL;
7247 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7248 {
7249 if (sec->reloc_count == 0
7250 || !elf_discarded_section (sec)
7251 || get_opd_info (sec)
7252 || (sec->flags & SEC_ALLOC) == 0
7253 || (sec->flags & SEC_DEBUGGING) != 0)
7254 continue;
7255
7256 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7257 if (relstart == NULL)
7258 goto error_ret;
7259
7260 /* Run through the relocs to see which toc entries might be
7261 unused. */
7262 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7263 {
7264 enum elf_ppc64_reloc_type r_type;
7265 unsigned long r_symndx;
7266 asection *sym_sec;
7267 struct elf_link_hash_entry *h;
7268 Elf_Internal_Sym *sym;
7269 bfd_vma val;
7270
7271 r_type = ELF64_R_TYPE (rel->r_info);
7272 switch (r_type)
7273 {
7274 default:
7275 continue;
7276
7277 case R_PPC64_TOC16:
7278 case R_PPC64_TOC16_LO:
7279 case R_PPC64_TOC16_HI:
7280 case R_PPC64_TOC16_HA:
7281 case R_PPC64_TOC16_DS:
7282 case R_PPC64_TOC16_LO_DS:
7283 break;
7284 }
7285
7286 r_symndx = ELF64_R_SYM (rel->r_info);
7287 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7288 r_symndx, ibfd))
7289 goto error_ret;
7290
7291 if (sym_sec != toc)
7292 continue;
7293
7294 if (h != NULL)
7295 val = h->root.u.def.value;
7296 else
7297 val = sym->st_value;
7298 val += rel->r_addend;
7299
7300 if (val >= toc->size)
7301 continue;
7302
7303 /* Anything in the toc ought to be aligned to 8 bytes.
7304 If not, don't mark as unused. */
7305 if (val & 7)
7306 continue;
7307
7308 if (skip == NULL)
7309 {
7310 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7311 if (skip == NULL)
7312 goto error_ret;
7313 }
7314
7315 skip[val >> 3] = 1;
7316 }
7317
7318 if (elf_section_data (sec)->relocs != relstart)
7319 free (relstart);
7320 }
7321
7322 if (skip == NULL)
7323 continue;
7324
7325 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7326 if (used == NULL)
7327 {
7328 error_ret:
7329 if (local_syms != NULL
7330 && symtab_hdr->contents != (unsigned char *) local_syms)
7331 free (local_syms);
7332 if (sec != NULL
7333 && relstart != NULL
7334 && elf_section_data (sec)->relocs != relstart)
7335 free (relstart);
7336 if (skip != NULL)
7337 free (skip);
7338 return FALSE;
7339 }
7340
30038c59
AM
7341 /* Now check all kept sections that might reference the toc.
7342 Check the toc itself last. */
7343 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7344 : ibfd->sections);
c5614fa4 7345 sec != NULL;
c5614fa4 7346 sec = (sec == toc ? NULL
c5614fa4 7347 : sec->next == NULL ? toc
30038c59 7348 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM
7349 : sec->next))
7350 {
7351 int repeat;
7352
7353 if (sec->reloc_count == 0
7354 || elf_discarded_section (sec)
7355 || get_opd_info (sec)
7356 || (sec->flags & SEC_ALLOC) == 0
7357 || (sec->flags & SEC_DEBUGGING) != 0)
7358 continue;
7359
7360 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7361 if (relstart == NULL)
7362 goto error_ret;
7363
7364 /* Mark toc entries referenced as used. */
7365 repeat = 0;
7366 do
7367 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7368 {
7369 enum elf_ppc64_reloc_type r_type;
7370 unsigned long r_symndx;
7371 asection *sym_sec;
7372 struct elf_link_hash_entry *h;
7373 Elf_Internal_Sym *sym;
7374 bfd_vma val;
7375
7376 r_type = ELF64_R_TYPE (rel->r_info);
7377 switch (r_type)
7378 {
7379 case R_PPC64_TOC16:
7380 case R_PPC64_TOC16_LO:
7381 case R_PPC64_TOC16_HI:
7382 case R_PPC64_TOC16_HA:
7383 case R_PPC64_TOC16_DS:
7384 case R_PPC64_TOC16_LO_DS:
7385 /* In case we're taking addresses of toc entries. */
7386 case R_PPC64_ADDR64:
7387 break;
7388
7389 default:
7390 continue;
7391 }
7392
7393 r_symndx = ELF64_R_SYM (rel->r_info);
7394 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7395 r_symndx, ibfd))
7396 {
7397 free (used);
7398 goto error_ret;
7399 }
7400
7401 if (sym_sec != toc)
7402 continue;
7403
7404 if (h != NULL)
7405 val = h->root.u.def.value;
7406 else
7407 val = sym->st_value;
7408 val += rel->r_addend;
7409
7410 if (val >= toc->size)
7411 continue;
7412
7413 /* For the toc section, we only mark as used if
7414 this entry itself isn't unused. */
7415 if (sec == toc
7416 && !used[val >> 3]
7417 && (used[rel->r_offset >> 3]
7418 || !skip[rel->r_offset >> 3]))
7419 /* Do all the relocs again, to catch reference
7420 chains. */
7421 repeat = 1;
7422
7423 used[val >> 3] = 1;
7424 }
7425 while (repeat);
7426 }
7427
7428 /* Merge the used and skip arrays. Assume that TOC
7429 doublewords not appearing as either used or unused belong
7430 to to an entry more than one doubleword in size. */
7431 for (drop = skip, keep = used, last = 0, some_unused = 0;
7432 drop < skip + (toc->size + 7) / 8;
7433 ++drop, ++keep)
7434 {
7435 if (*keep)
7436 {
7437 *drop = 0;
7438 last = 0;
7439 }
7440 else if (*drop)
7441 {
7442 some_unused = 1;
7443 last = 1;
7444 }
7445 else
7446 *drop = last;
7447 }
7448
7449 free (used);
7450
7451 if (some_unused)
7452 {
7453 bfd_byte *contents, *src;
7454 unsigned long off;
7455
7456 /* Shuffle the toc contents, and at the same time convert the
7457 skip array from booleans into offsets. */
7458 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7459 goto error_ret;
7460
7461 elf_section_data (toc)->this_hdr.contents = contents;
7462
7463 for (src = contents, off = 0, drop = skip;
7464 src < contents + toc->size;
7465 src += 8, ++drop)
7466 {
7467 if (*drop)
7468 {
7469 *drop = (unsigned long) -1;
7470 off += 8;
7471 }
7472 else if (off != 0)
7473 {
7474 *drop = off;
7475 memcpy (src - off, src, 8);
7476 }
7477 }
7478 toc->rawsize = toc->size;
7479 toc->size = src - contents - off;
7480
92b7a70f
AM
7481 if (toc->reloc_count != 0)
7482 {
7483 Elf_Internal_Rela *wrel;
7484 bfd_size_type sz;
c5614fa4 7485
92b7a70f
AM
7486 /* Read toc relocs. */
7487 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7488 TRUE);
7489 if (relstart == NULL)
7490 goto error_ret;
7491
7492 /* Remove unused toc relocs, and adjust those we keep. */
7493 wrel = relstart;
7494 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7495 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7496 {
7497 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7498 wrel->r_info = rel->r_info;
7499 wrel->r_addend = rel->r_addend;
7500 ++wrel;
7501 }
8c1d1bb8
AM
7502 else if (!dec_dynrel_count (rel->r_info, toc, info,
7503 &local_syms, NULL, NULL))
7504 goto error_ret;
35090471 7505
92b7a70f
AM
7506 toc->reloc_count = wrel - relstart;
7507 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7508 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7509 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7510 }
c5614fa4
AM
7511
7512 /* Adjust addends for relocs against the toc section sym. */
7513 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7514 {
7515 if (sec->reloc_count == 0
7516 || elf_discarded_section (sec))
7517 continue;
7518
7519 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7520 TRUE);
7521 if (relstart == NULL)
7522 goto error_ret;
7523
7524 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7525 {
7526 enum elf_ppc64_reloc_type r_type;
7527 unsigned long r_symndx;
7528 asection *sym_sec;
7529 struct elf_link_hash_entry *h;
7530 Elf_Internal_Sym *sym;
7531
7532 r_type = ELF64_R_TYPE (rel->r_info);
7533 switch (r_type)
7534 {
7535 default:
7536 continue;
7537
7538 case R_PPC64_TOC16:
7539 case R_PPC64_TOC16_LO:
7540 case R_PPC64_TOC16_HI:
7541 case R_PPC64_TOC16_HA:
7542 case R_PPC64_TOC16_DS:
7543 case R_PPC64_TOC16_LO_DS:
7544 case R_PPC64_ADDR64:
7545 break;
7546 }
7547
7548 r_symndx = ELF64_R_SYM (rel->r_info);
7549 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7550 r_symndx, ibfd))
7551 goto error_ret;
7552
7553 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7554 continue;
7555
7556 rel->r_addend -= skip[rel->r_addend >> 3];
7557 }
7558 }
7559
7560 /* We shouldn't have local or global symbols defined in the TOC,
7561 but handle them anyway. */
7562 if (local_syms != NULL)
7563 {
7564 Elf_Internal_Sym *sym;
7565
7566 for (sym = local_syms;
7567 sym < local_syms + symtab_hdr->sh_info;
7568 ++sym)
cb33740c 7569 if (sym->st_value != 0
c5614fa4
AM
7570 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7571 {
7572 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7573 sym->st_value -= skip[sym->st_value >> 3];
7574 else
7575 {
7576 (*_bfd_error_handler)
7577 (_("%s defined in removed toc entry"),
26c61ae5
L
7578 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7579 NULL));
c5614fa4
AM
7580 sym->st_value = 0;
7581 sym->st_shndx = SHN_ABS;
7582 }
7583 symtab_hdr->contents = (unsigned char *) local_syms;
7584 }
7585 }
7586
7587 /* Finally, adjust any global syms defined in the toc. */
7588 if (toc_inf.global_toc_syms)
7589 {
7590 toc_inf.toc = toc;
7591 toc_inf.skip = skip;
7592 toc_inf.global_toc_syms = FALSE;
7593 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7594 &toc_inf);
7595 }
7596 }
7597
7598 if (local_syms != NULL
7599 && symtab_hdr->contents != (unsigned char *) local_syms)
7600 {
7601 if (!info->keep_memory)
7602 free (local_syms);
7603 else
7604 symtab_hdr->contents = (unsigned char *) local_syms;
7605 }
7606 free (skip);
7607 }
7608
7609 return TRUE;
7610}
7611
65f38f15
AM
7612/* Allocate space in .plt, .got and associated reloc sections for
7613 dynamic relocs. */
5bd4f169 7614
b34976b6 7615static bfd_boolean
4ce794b7 7616allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7617{
65f38f15
AM
7618 struct bfd_link_info *info;
7619 struct ppc_link_hash_table *htab;
5bd4f169 7620 asection *s;
65f38f15
AM
7621 struct ppc_link_hash_entry *eh;
7622 struct ppc_dyn_relocs *p;
411e1bfb 7623 struct got_entry *gent;
5bd4f169 7624
e92d460e 7625 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7626 return TRUE;
5bd4f169 7627
e92d460e
AM
7628 if (h->root.type == bfd_link_hash_warning)
7629 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7630
65f38f15
AM
7631 info = (struct bfd_link_info *) inf;
7632 htab = ppc_hash_table (info);
5bd4f169 7633
65f38f15 7634 if (htab->elf.dynamic_sections_created
411e1bfb 7635 && h->dynindx != -1
9c7a29a3 7636 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7637 {
411e1bfb
AM
7638 struct plt_entry *pent;
7639 bfd_boolean doneone = FALSE;
7640 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7641 if (pent->plt.refcount > 0)
7642 {
411e1bfb
AM
7643 /* If this is the first .plt entry, make room for the special
7644 first entry. */
4ce794b7 7645 s = htab->plt;
eea6121a
AM
7646 if (s->size == 0)
7647 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7648
eea6121a 7649 pent->plt.offset = s->size;
411e1bfb
AM
7650
7651 /* Make room for this entry. */
eea6121a 7652 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM
7653
7654 /* Make room for the .glink code. */
4ce794b7 7655 s = htab->glink;
eea6121a
AM
7656 if (s->size == 0)
7657 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7658 /* We need bigger stubs past index 32767. */
eea6121a
AM
7659 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7660 s->size += 4;
7661 s->size += 2*4;
411e1bfb
AM
7662
7663 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7664 s = htab->relplt;
eea6121a 7665 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
7666 doneone = TRUE;
7667 }
7668 else
7669 pent->plt.offset = (bfd_vma) -1;
7670 if (!doneone)
65f38f15 7671 {
411e1bfb 7672 h->plt.plist = NULL;
f5385ebf 7673 h->needs_plt = 0;
65f38f15
AM
7674 }
7675 }
7676 else
7677 {
411e1bfb 7678 h->plt.plist = NULL;
f5385ebf 7679 h->needs_plt = 0;
65f38f15
AM
7680 }
7681
951fd09b
AM
7682 eh = (struct ppc_link_hash_entry *) h;
7683 /* Run through the TLS GD got entries first if we're changing them
7684 to TPREL. */
e7b938ca 7685 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM
7686 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7687 if (gent->got.refcount > 0
7688 && (gent->tls_type & TLS_GD) != 0)
7689 {
7690 /* This was a GD entry that has been converted to TPREL. If
7691 there happens to be a TPREL entry we can use that one. */
7692 struct got_entry *ent;
7693 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7694 if (ent->got.refcount > 0
7695 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM
7696 && ent->addend == gent->addend
7697 && ent->owner == gent->owner)
951fd09b
AM
7698 {
7699 gent->got.refcount = 0;
7700 break;
7701 }
7702
7703 /* If not, then we'll be using our own TPREL entry. */
7704 if (gent->got.refcount != 0)
7705 gent->tls_type = TLS_TLS | TLS_TPREL;
7706 }
7707
411e1bfb
AM
7708 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7709 if (gent->got.refcount > 0)
7710 {
951fd09b
AM
7711 bfd_boolean dyn;
7712
411e1bfb 7713 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM
7714 Undefined weak syms won't yet be marked as dynamic,
7715 nor will all TLS symbols. */
411e1bfb 7716 if (h->dynindx == -1
f5385ebf 7717 && !h->forced_local)
411e1bfb 7718 {
c152c796 7719 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM
7720 return FALSE;
7721 }
65f38f15 7722
d881513a 7723 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7724 && !h->def_dynamic)
411e1bfb 7725 {
102890f0
AM
7726 ppc64_tlsld_got (gent->owner)->refcount += 1;
7727 gent->got.offset = (bfd_vma) -1;
951fd09b 7728 continue;
411e1bfb 7729 }
951fd09b 7730
0c8d6e5c 7731 if (!is_ppc64_elf (gent->owner))
0ffa91dd
NC
7732 continue;
7733
e717da7e 7734 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM
7735 gent->got.offset = s->size;
7736 s->size
d881513a 7737 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7738 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM
7739 if ((info->shared
7740 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7741 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7742 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7743 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7744 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM
7745 ? 2 * sizeof (Elf64_External_Rela)
7746 : sizeof (Elf64_External_Rela));
411e1bfb
AM
7747 }
7748 else
7749 gent->got.offset = (bfd_vma) -1;
65f38f15 7750
65f38f15 7751 if (eh->dyn_relocs == NULL)
b34976b6 7752 return TRUE;
65f38f15
AM
7753
7754 /* In the shared -Bsymbolic case, discard space allocated for
7755 dynamic pc-relative relocs against symbols which turn out to be
7756 defined in regular objects. For the normal shared case, discard
7757 space for relocs that have become local due to symbol visibility
7758 changes. */
7759
7760 if (info->shared)
7761 {
9c7a29a3
AM
7762 /* Relocs that use pc_count are those that appear on a call insn,
7763 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7764 generated via assembly. We want calls to protected symbols to
7765 resolve directly to the function rather than going via the plt.
7766 If people want function pointer comparisons to work as expected
7767 then they should avoid writing weird assembly. */
09695f56 7768 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM
7769 {
7770 struct ppc_dyn_relocs **pp;
7771
7772 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7773 {
65f38f15
AM
7774 p->count -= p->pc_count;
7775 p->pc_count = 0;
7776 if (p->count == 0)
7777 *pp = p->next;
7778 else
7779 pp = &p->next;
5bd4f169 7780 }
65f38f15 7781 }
4e795f50
AM
7782
7783 /* Also discard relocs on undefined weak syms with non-default
7784 visibility. */
cab87ef9
AM
7785 if (eh->dyn_relocs != NULL
7786 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM
7787 {
7788 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7789 eh->dyn_relocs = NULL;
7790
7791 /* Make sure this symbol is output as a dynamic symbol.
7792 Undefined weak syms won't yet be marked as dynamic. */
7793 else if (h->dynindx == -1
7794 && !h->forced_local)
7795 {
7796 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7797 return FALSE;
7798 }
7799 }
65f38f15 7800 }
f4656909 7801 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM
7802 {
7803 /* For the non-shared case, discard space for relocs against
7804 symbols which turn out to need copy relocs or are not
7805 dynamic. */
7806
f5385ebf
AM
7807 if (!h->non_got_ref
7808 && h->def_dynamic
7809 && !h->def_regular)
65f38f15
AM
7810 {
7811 /* Make sure this symbol is output as a dynamic symbol.
7812 Undefined weak syms won't yet be marked as dynamic. */
7813 if (h->dynindx == -1
f5385ebf 7814 && !h->forced_local)
65f38f15 7815 {
c152c796 7816 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7817 return FALSE;
65f38f15
AM
7818 }
7819
7820 /* If that succeeded, we know we'll be keeping all the
7821 relocs. */
7822 if (h->dynindx != -1)
7823 goto keep;
7824 }
7825
7826 eh->dyn_relocs = NULL;
7827
ec338859 7828 keep: ;
65f38f15
AM
7829 }
7830
7831 /* Finally, allocate space. */
7832 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7833 {
7834 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7835 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM
7836 }
7837
b34976b6 7838 return TRUE;
65f38f15
AM
7839}
7840
7841/* Find any dynamic relocs that apply to read-only sections. */
7842
b34976b6 7843static bfd_boolean
4ce794b7 7844readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM
7845{
7846 struct ppc_link_hash_entry *eh;
7847 struct ppc_dyn_relocs *p;
7848
e92d460e
AM
7849 if (h->root.type == bfd_link_hash_warning)
7850 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7851
65f38f15
AM
7852 eh = (struct ppc_link_hash_entry *) h;
7853 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7854 {
7855 asection *s = p->sec->output_section;
7856
7857 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7858 {
4ce794b7 7859 struct bfd_link_info *info = inf;
65f38f15
AM
7860
7861 info->flags |= DF_TEXTREL;
7862
7863 /* Not an error, just cut short the traversal. */
b34976b6 7864 return FALSE;
65f38f15
AM
7865 }
7866 }
b34976b6 7867 return TRUE;
65f38f15
AM
7868}
7869
7870/* Set the sizes of the dynamic sections. */
7871
b34976b6 7872static bfd_boolean
4ce794b7
AM
7873ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
7874 struct bfd_link_info *info)
65f38f15
AM
7875{
7876 struct ppc_link_hash_table *htab;
7877 bfd *dynobj;
7878 asection *s;
b34976b6 7879 bfd_boolean relocs;
65f38f15
AM
7880 bfd *ibfd;
7881
7882 htab = ppc_hash_table (info);
7883 dynobj = htab->elf.dynobj;
7884 if (dynobj == NULL)
7885 abort ();
7886
7887 if (htab->elf.dynamic_sections_created)
7888 {
7889 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 7890 if (info->executable)
65f38f15
AM
7891 {
7892 s = bfd_get_section_by_name (dynobj, ".interp");
7893 if (s == NULL)
7894 abort ();
eea6121a 7895 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM
7896 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7897 }
7898 }
7899
7900 /* Set up .got offsets for local syms, and space for local dynamic
7901 relocs. */
7902 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7903 {
411e1bfb
AM
7904 struct got_entry **lgot_ents;
7905 struct got_entry **end_lgot_ents;
e7b938ca 7906 char *lgot_masks;
65f38f15
AM
7907 bfd_size_type locsymcount;
7908 Elf_Internal_Shdr *symtab_hdr;
7909 asection *srel;
7910
0c8d6e5c 7911 if (!is_ppc64_elf (ibfd))
65f38f15
AM
7912 continue;
7913
7914 for (s = ibfd->sections; s != NULL; s = s->next)
7915 {
ec338859 7916 struct ppc_dyn_relocs *p;
65f38f15 7917
6edfbbad 7918 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 7919 {
ec338859
AM
7920 if (!bfd_is_abs_section (p->sec)
7921 && bfd_is_abs_section (p->sec->output_section))
7922 {
7923 /* Input section has been discarded, either because
7924 it is a copy of a linkonce section or due to
7925 linker script /DISCARD/, so we'll be discarding
7926 the relocs too. */
7927 }
248866a8 7928 else if (p->count != 0)
ec338859
AM
7929 {
7930 srel = elf_section_data (p->sec)->sreloc;
eea6121a 7931 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
7932 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
7933 info->flags |= DF_TEXTREL;
ec338859 7934 }
65f38f15
AM
7935 }
7936 }
7937
411e1bfb
AM
7938 lgot_ents = elf_local_got_ents (ibfd);
7939 if (!lgot_ents)
65f38f15
AM
7940 continue;
7941
0ffa91dd 7942 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 7943 locsymcount = symtab_hdr->sh_info;
411e1bfb 7944 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 7945 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM
7946 s = ppc64_elf_tdata (ibfd)->got;
7947 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 7948 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 7949 {
411e1bfb
AM
7950 struct got_entry *ent;
7951
7952 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
7953 if (ent->got.refcount > 0)
7954 {
e7b938ca 7955 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 7956 {
102890f0
AM
7957 ppc64_tlsld_got (ibfd)->refcount += 1;
7958 ent->got.offset = (bfd_vma) -1;
411e1bfb
AM
7959 }
7960 else
7961 {
eea6121a 7962 ent->got.offset = s->size;
e7b938ca 7963 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 7964 {
eea6121a 7965 s->size += 16;
411e1bfb 7966 if (info->shared)
eea6121a 7967 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM
7968 }
7969 else
7970 {
eea6121a 7971 s->size += 8;
411e1bfb 7972 if (info->shared)
eea6121a 7973 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
7974 }
7975 }
7976 }
7977 else
7978 ent->got.offset = (bfd_vma) -1;
65f38f15
AM
7979 }
7980 }
7981
7982 /* Allocate global sym .plt and .got entries, and space for global
7983 sym dynamic relocs. */
4ce794b7 7984 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 7985
102890f0
AM
7986 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7987 {
0c8d6e5c 7988 if (!is_ppc64_elf (ibfd))
102890f0
AM
7989 continue;
7990
7991 if (ppc64_tlsld_got (ibfd)->refcount > 0)
7992 {
7993 s = ppc64_elf_tdata (ibfd)->got;
7994 ppc64_tlsld_got (ibfd)->offset = s->size;
7995 s->size += 16;
7996 if (info->shared)
7997 {
7998 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
7999 srel->size += sizeof (Elf64_External_Rela);
8000 }
8001 }
8002 else
8003 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
8004 }
8005
65f38f15
AM
8006 /* We now have determined the sizes of the various dynamic sections.
8007 Allocate memory for them. */
b34976b6 8008 relocs = FALSE;
65f38f15
AM
8009 for (s = dynobj->sections; s != NULL; s = s->next)
8010 {
8011 if ((s->flags & SEC_LINKER_CREATED) == 0)
8012 continue;
8013
4ce794b7 8014 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM
8015 /* These haven't been allocated yet; don't strip. */
8016 continue;
e717da7e
AM
8017 else if (s == htab->got
8018 || s == htab->plt
c456f082
AM
8019 || s == htab->glink
8020 || s == htab->dynbss)
65f38f15
AM
8021 {
8022 /* Strip this section if we don't need it; see the
8023 comment below. */
5bd4f169 8024 }
0112cd26 8025 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 8026 {
c456f082 8027 if (s->size != 0)
5bd4f169 8028 {
4ce794b7 8029 if (s != htab->relplt)
b34976b6 8030 relocs = TRUE;
5bd4f169
AM
8031
8032 /* We use the reloc_count field as a counter if we need
8033 to copy relocs into the output file. */
8034 s->reloc_count = 0;
8035 }
8036 }
65f38f15 8037 else
5bd4f169
AM
8038 {
8039 /* It's not one of our sections, so don't allocate space. */
8040 continue;
8041 }
8042
eea6121a 8043 if (s->size == 0)
5bd4f169 8044 {
c456f082
AM
8045 /* If we don't need this section, strip it from the
8046 output file. This is mostly to handle .rela.bss and
8047 .rela.plt. We must create both sections in
8048 create_dynamic_sections, because they must be created
8049 before the linker maps input sections to output
8050 sections. The linker does that before
8051 adjust_dynamic_symbol is called, and it is that
8052 function which decides whether anything needs to go
8053 into these sections. */
8423293d 8054 s->flags |= SEC_EXCLUDE;
5bd4f169
AM
8055 continue;
8056 }
8057
c456f082 8058 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM
8059 continue;
8060
65f38f15
AM
8061 /* Allocate memory for the section contents. We use bfd_zalloc
8062 here in case unused entries are not reclaimed before the
8063 section's contents are written out. This should not happen,
411e1bfb
AM
8064 but this way if it does we get a R_PPC64_NONE reloc in .rela
8065 sections instead of garbage.
8066 We also rely on the section contents being zero when writing
8067 the GOT. */
eea6121a 8068 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8069 if (s->contents == NULL)
b34976b6 8070 return FALSE;
5bd4f169
AM
8071 }
8072
e717da7e
AM
8073 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8074 {
0c8d6e5c 8075 if (!is_ppc64_elf (ibfd))
7b53ace3
AM
8076 continue;
8077
e717da7e
AM
8078 s = ppc64_elf_tdata (ibfd)->got;
8079 if (s != NULL && s != htab->got)
8080 {
eea6121a 8081 if (s->size == 0)
8423293d 8082 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8083 else
8084 {
eea6121a 8085 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8086 if (s->contents == NULL)
8087 return FALSE;
8088 }
8089 }
8090 s = ppc64_elf_tdata (ibfd)->relgot;
8091 if (s != NULL)
8092 {
eea6121a 8093 if (s->size == 0)
8423293d 8094 s->flags |= SEC_EXCLUDE;
e717da7e
AM
8095 else
8096 {
eea6121a 8097 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
8098 if (s->contents == NULL)
8099 return FALSE;
8100 relocs = TRUE;
8101 s->reloc_count = 0;
8102 }
8103 }
8104 }
8105
e86ce104 8106 if (htab->elf.dynamic_sections_created)
5bd4f169
AM
8107 {
8108 /* Add some entries to the .dynamic section. We fill in the
8109 values later, in ppc64_elf_finish_dynamic_sections, but we
8110 must add the entries now so that we get the correct size for
8111 the .dynamic section. The DT_DEBUG entry is filled in by the
8112 dynamic linker and used by the debugger. */
dc810e39 8113#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8114 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8115
36af4a4e 8116 if (info->executable)
5bd4f169 8117 {
dc810e39 8118 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8119 return FALSE;
5bd4f169
AM
8120 }
8121
eea6121a 8122 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8123 {
dc810e39
AM
8124 if (!add_dynamic_entry (DT_PLTGOT, 0)
8125 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8126 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM
8127 || !add_dynamic_entry (DT_JMPREL, 0)
8128 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8129 return FALSE;
5bd4f169
AM
8130 }
8131
19397422
AM
8132 if (NO_OPD_RELOCS)
8133 {
8134 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8135 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8136 return FALSE;
19397422
AM
8137 }
8138
5bd4f169
AM
8139 if (relocs)
8140 {
dc810e39
AM
8141 if (!add_dynamic_entry (DT_RELA, 0)
8142 || !add_dynamic_entry (DT_RELASZ, 0)
8143 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8144 return FALSE;
5bd4f169 8145
65f38f15
AM
8146 /* If any dynamic relocs apply to a read-only section,
8147 then we need a DT_TEXTREL entry. */
248866a8 8148 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8149 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8150
65f38f15 8151 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8152 {
65f38f15 8153 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8154 return FALSE;
5bd4f169 8155 }
5bd4f169 8156 }
5bd4f169 8157 }
65f38f15 8158#undef add_dynamic_entry
5bd4f169 8159
b34976b6 8160 return TRUE;
5bd4f169
AM
8161}
8162
721956f4 8163/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8164
4ce794b7
AM
8165static inline enum ppc_stub_type
8166ppc_type_of_stub (asection *input_sec,
8167 const Elf_Internal_Rela *rel,
8168 struct ppc_link_hash_entry **hash,
8169 bfd_vma destination)
5bd4f169 8170{
721956f4
AM
8171 struct ppc_link_hash_entry *h = *hash;
8172 bfd_vma location;
8173 bfd_vma branch_offset;
8174 bfd_vma max_branch_offset;
4ce794b7 8175 enum elf_ppc64_reloc_type r_type;
5bd4f169 8176
721956f4
AM
8177 if (h != NULL)
8178 {
7fe2b9a6
AM
8179 struct ppc_link_hash_entry *fdh = h;
8180 if (fdh->oh != NULL
8181 && fdh->oh->is_func_descriptor)
8182 fdh = fdh->oh;
8387904d 8183
7fe2b9a6 8184 if (fdh->elf.dynindx != -1)
5bd4f169 8185 {
411e1bfb 8186 struct plt_entry *ent;
8387904d 8187
7fe2b9a6 8188 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
8189 if (ent->addend == rel->r_addend
8190 && ent->plt.offset != (bfd_vma) -1)
8191 {
7fe2b9a6 8192 *hash = fdh;
411e1bfb
AM
8193 return ppc_stub_plt_call;
8194 }
5bd4f169
AM
8195 }
8196
7fe2b9a6
AM
8197 /* Here, we know we don't have a plt entry. If we don't have a
8198 either a defined function descriptor or a defined entry symbol
8199 in a regular object file, then it is pointless trying to make
8200 any other type of stub. */
8201 if (!((fdh->elf.root.type == bfd_link_hash_defined
8202 || fdh->elf.root.type == bfd_link_hash_defweak)
8203 && fdh->elf.root.u.def.section->output_section != NULL)
8204 && !((h->elf.root.type == bfd_link_hash_defined
8205 || h->elf.root.type == bfd_link_hash_defweak)
8206 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8207 return ppc_stub_none;
5d1634d7 8208 }
5d1634d7 8209
721956f4
AM
8210 /* Determine where the call point is. */
8211 location = (input_sec->output_offset
8212 + input_sec->output_section->vma
8213 + rel->r_offset);
5d1634d7 8214
721956f4
AM
8215 branch_offset = destination - location;
8216 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8217
721956f4
AM
8218 /* Determine if a long branch stub is needed. */
8219 max_branch_offset = 1 << 25;
4ce794b7 8220 if (r_type != R_PPC64_REL24)
721956f4 8221 max_branch_offset = 1 << 15;
5d1634d7 8222
721956f4
AM
8223 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8224 /* We need a stub. Figure out whether a long_branch or plt_branch
8225 is needed later. */
8226 return ppc_stub_long_branch;
5d1634d7 8227
721956f4 8228 return ppc_stub_none;
5d1634d7
AM
8229}
8230
8231/* Build a .plt call stub. */
8232
4ce794b7 8233static inline bfd_byte *
176a0d42 8234build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
5d1634d7
AM
8235{
8236#define PPC_LO(v) ((v) & 0xffff)
8237#define PPC_HI(v) (((v) >> 16) & 0xffff)
8238#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8239
ac2df442
AM
8240 if (PPC_HA (offset) != 0)
8241 {
176a0d42
AM
8242 if (r != NULL)
8243 {
8244 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8245 r[1].r_offset = r[0].r_offset + 8;
8246 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8247 r[1].r_addend = r[0].r_addend;
8248 if (PPC_HA (offset + 16) != PPC_HA (offset))
8249 {
8250 r[2].r_offset = r[1].r_offset + 4;
8251 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
8252 r[2].r_addend = r[0].r_addend;
8253 }
8254 else
8255 {
8256 r[2].r_offset = r[1].r_offset + 8;
8257 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8258 r[2].r_addend = r[0].r_addend + 8;
8259 r[3].r_offset = r[2].r_offset + 4;
8260 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8261 r[3].r_addend = r[0].r_addend + 16;
8262 }
8263 }
ac2df442
AM
8264 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8265 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8266 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8267 if (PPC_HA (offset + 16) != PPC_HA (offset))
8268 {
8269 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8270 offset = 0;
8271 }
8272 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8273 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8274 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8275 bfd_put_32 (obfd, BCTR, p), p += 4;
8276 }
8277 else
8278 {
176a0d42
AM
8279 if (r != NULL)
8280 {
8281 r[0].r_offset += 4;
8282 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8283 if (PPC_HA (offset + 16) != PPC_HA (offset))
8284 {
8285 r[1].r_offset = r[0].r_offset + 4;
8286 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
8287 r[1].r_addend = r[0].r_addend;
8288 }
8289 else
8290 {
8291 r[1].r_offset = r[0].r_offset + 8;
8292 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8293 r[1].r_addend = r[0].r_addend + 16;
8294 r[2].r_offset = r[1].r_offset + 4;
8295 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8296 r[2].r_addend = r[0].r_addend + 8;
8297 }
8298 }
ac2df442
AM
8299 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8300 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8301 if (PPC_HA (offset + 16) != PPC_HA (offset))
8302 {
8303 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8304 offset = 0;
8305 }
8306 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8307 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8308 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8309 bfd_put_32 (obfd, BCTR, p), p += 4;
8310 }
5d1634d7
AM
8311 return p;
8312}
8313
176a0d42
AM
8314static Elf_Internal_Rela *
8315get_relocs (asection *sec, int count)
8316{
8317 Elf_Internal_Rela *relocs;
8318 struct bfd_elf_section_data *elfsec_data;
8319
8320 elfsec_data = elf_section_data (sec);
8321 relocs = elfsec_data->relocs;
8322 if (relocs == NULL)
8323 {
8324 bfd_size_type relsize;
8325 relsize = sec->reloc_count * sizeof (*relocs);
8326 relocs = bfd_alloc (sec->owner, relsize);
8327 if (relocs == NULL)
8328 return NULL;
8329 elfsec_data->relocs = relocs;
8330 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
8331 * sizeof (Elf64_External_Rela));
8332 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
8333 sec->reloc_count = 0;
8334 }
8335 relocs += sec->reloc_count;
8336 sec->reloc_count += count;
8337 return relocs;
8338}
8339
b34976b6 8340static bfd_boolean
4ce794b7 8341ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8342{
721956f4
AM
8343 struct ppc_stub_hash_entry *stub_entry;
8344 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM
8345 struct bfd_link_info *info;
8346 struct ppc_link_hash_table *htab;
721956f4
AM
8347 bfd_byte *loc;
8348 bfd_byte *p;
411e1bfb 8349 struct plt_entry *ent;
ee75fd95 8350 bfd_vma dest, off;
721956f4 8351 int size;
176a0d42 8352 Elf_Internal_Rela *r;
5d1634d7 8353
721956f4
AM
8354 /* Massage our args to the form they really have. */
8355 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8356 info = in_arg;
5d1634d7 8357
5d1634d7
AM
8358 htab = ppc_hash_table (info);
8359
721956f4 8360 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8361 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8362 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8363
4ce794b7 8364 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8365 switch (stub_entry->stub_type)
5d1634d7 8366 {
721956f4 8367 case ppc_stub_long_branch:
ad8e1ba5 8368 case ppc_stub_long_branch_r2off:
721956f4 8369 /* Branches are relative. This is where we are going to. */
ee75fd95
AM
8370 off = dest = (stub_entry->target_value
8371 + stub_entry->target_section->output_offset
8372 + stub_entry->target_section->output_section->vma);
5d1634d7 8373
721956f4
AM
8374 /* And this is where we are coming from. */
8375 off -= (stub_entry->stub_offset
97b639ba
AM
8376 + stub_entry->stub_sec->output_offset
8377 + stub_entry->stub_sec->output_section->vma);
e86ce104 8378
ac2df442
AM
8379 size = 4;
8380 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM
8381 {
8382 bfd_vma r2off;
8383
8384 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8385 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8386 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8387 loc += 4;
ac2df442
AM
8388 size = 12;
8389 if (PPC_HA (r2off) != 0)
8390 {
8391 size = 16;
8392 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8393 loc += 4;
8394 }
97b639ba 8395 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 8396 loc += 4;
ac2df442 8397 off -= size - 4;
ad8e1ba5 8398 }
97b639ba 8399 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8400
5c3dead3
AM
8401 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8402 {
8403 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8404 stub_entry->root.string);
8405 htab->stub_error = TRUE;
8406 return FALSE;
8407 }
ee75fd95
AM
8408
8409 if (info->emitrelocations)
8410 {
176a0d42
AM
8411 r = get_relocs (stub_entry->stub_sec, 1);
8412 if (r == NULL)
8413 return FALSE;
ee75fd95
AM
8414 r->r_offset = loc - stub_entry->stub_sec->contents;
8415 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8416 r->r_addend = dest;
8417 if (stub_entry->h != NULL)
8418 {
8419 struct elf_link_hash_entry **hashes;
8420 unsigned long symndx;
8421 struct ppc_link_hash_entry *h;
8422
8423 hashes = elf_sym_hashes (htab->stub_bfd);
8424 if (hashes == NULL)
8425 {
8426 bfd_size_type hsize;
8427
8428 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8429 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8430 if (hashes == NULL)
8431 return FALSE;
8432 elf_sym_hashes (htab->stub_bfd) = hashes;
8433 htab->stub_globals = 1;
8434 }
8435 symndx = htab->stub_globals++;
8436 h = stub_entry->h;
8437 hashes[symndx] = &h->elf;
8438 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8439 if (h->oh != NULL && h->oh->is_func)
8440 h = h->oh;
8441 if (h->elf.root.u.def.section != stub_entry->target_section)
8442 /* H is an opd symbol. The addend must be zero. */
8443 r->r_addend = 0;
8444 else
8445 {
8446 off = (h->elf.root.u.def.value
8447 + h->elf.root.u.def.section->output_offset
8448 + h->elf.root.u.def.section->output_section->vma);
8449 r->r_addend -= off;
8450 }
8451 }
8452 }
721956f4 8453 break;
e86ce104 8454
721956f4 8455 case ppc_stub_plt_branch:
ad8e1ba5 8456 case ppc_stub_plt_branch_r2off:
721956f4
AM
8457 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8458 stub_entry->root.string + 9,
b34976b6 8459 FALSE, FALSE);
721956f4
AM
8460 if (br_entry == NULL)
8461 {
8462 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8463 stub_entry->root.string);
b34976b6
AM
8464 htab->stub_error = TRUE;
8465 return FALSE;
721956f4
AM
8466 }
8467
176a0d42
AM
8468 dest = (stub_entry->target_value
8469 + stub_entry->target_section->output_offset
8470 + stub_entry->target_section->output_section->vma);
721956f4 8471
176a0d42 8472 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 8473 htab->brlt->contents + br_entry->offset);
721956f4 8474
f94498ff 8475 if (br_entry->iter == htab->stub_iteration)
721956f4 8476 {
f94498ff 8477 br_entry->iter = 0;
84f5d08e 8478
f94498ff 8479 if (htab->relbrlt != NULL)
84f5d08e 8480 {
f94498ff
AM
8481 /* Create a reloc for the branch lookup table entry. */
8482 Elf_Internal_Rela rela;
8483 bfd_byte *rl;
8484
8485 rela.r_offset = (br_entry->offset
8486 + htab->brlt->output_offset
8487 + htab->brlt->output_section->vma);
8488 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 8489 rela.r_addend = dest;
f94498ff
AM
8490
8491 rl = htab->relbrlt->contents;
8492 rl += (htab->relbrlt->reloc_count++
8493 * sizeof (Elf64_External_Rela));
8494 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8495 }
8496 else if (info->emitrelocations)
8497 {
176a0d42
AM
8498 r = get_relocs (htab->brlt, 1);
8499 if (r == NULL)
8500 return FALSE;
8501 /* brlt, being SEC_LINKER_CREATED does not go through the
8502 normal reloc processing. Symbols and offsets are not
8503 translated from input file to output file form, so
8504 set up the offset per the output file. */
f94498ff
AM
8505 r->r_offset = (br_entry->offset
8506 + htab->brlt->output_offset
8507 + htab->brlt->output_section->vma);
8508 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 8509 r->r_addend = dest;
84f5d08e 8510 }
84f5d08e 8511 }
721956f4 8512
176a0d42
AM
8513 dest = (br_entry->offset
8514 + htab->brlt->output_offset
8515 + htab->brlt->output_section->vma);
8516
8517 off = (dest
4ce794b7 8518 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8519 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8520
ad8e1ba5 8521 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM
8522 {
8523 (*_bfd_error_handler)
e86ce104 8524 (_("linkage table error against `%s'"),
721956f4 8525 stub_entry->root.string);
5d1634d7 8526 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
8527 htab->stub_error = TRUE;
8528 return FALSE;
5d1634d7 8529 }
41bd81ab 8530
176a0d42
AM
8531 if (info->emitrelocations)
8532 {
8533 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
8534 if (r == NULL)
8535 return FALSE;
8536 r[0].r_offset = loc - stub_entry->stub_sec->contents;
8537 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
8538 r[0].r_offset += 4;
8539 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8540 r[0].r_addend = dest;
8541 if (PPC_HA (off) != 0)
8542 {
8543 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8544 r[1].r_offset = r[0].r_offset + 4;
8545 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8546 r[1].r_addend = r[0].r_addend;
8547 }
8548 }
8549
ad8e1ba5
AM
8550 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8551 {
176a0d42 8552 if (PPC_HA (off) != 0)
ac2df442
AM
8553 {
8554 size = 16;
176a0d42 8555 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8556 loc += 4;
176a0d42 8557 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
8558 }
8559 else
8560 {
8561 size = 12;
176a0d42 8562 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 8563 }
ad8e1ba5
AM
8564 }
8565 else
8566 {
8567 bfd_vma r2off;
8568
8569 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8570 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8571 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8572 loc += 4;
ac2df442 8573 size = 20;
176a0d42 8574 if (PPC_HA (off) != 0)
ac2df442
AM
8575 {
8576 size += 4;
176a0d42 8577 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8578 loc += 4;
176a0d42 8579 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
8580 loc += 4;
8581 }
8582 else
8583 {
176a0d42 8584 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM
8585 loc += 4;
8586 }
8587
8588 if (PPC_HA (r2off) != 0)
8589 {
8590 size += 4;
8591 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8592 loc += 4;
8593 }
97b639ba 8594 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
8595 }
8596 loc += 4;
97b639ba 8597 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8598 loc += 4;
97b639ba 8599 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8600 break;
5d1634d7 8601
721956f4 8602 case ppc_stub_plt_call:
c862ae31
AM
8603 /* Do the best we can for shared libraries built without
8604 exporting ".foo" for each "foo". This can happen when symbol
8605 versioning scripts strip all bar a subset of symbols. */
8387904d
AM
8606 if (stub_entry->h->oh != NULL
8607 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8608 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM
8609 {
8610 /* Point the symbol at the stub. There may be multiple stubs,
8611 we don't really care; The main thing is to make this sym
8f3bab57
AM
8612 defined somewhere. Maybe defining the symbol in the stub
8613 section is a silly idea. If we didn't do this, htab->top_id
8614 could disappear. */
34814b9f
AM
8615 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8616 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8617 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM
8618 }
8619
721956f4 8620 /* Now build the stub. */
176a0d42 8621 dest = (bfd_vma) -1;
411e1bfb
AM
8622 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8623 if (ent->addend == stub_entry->addend)
8624 {
176a0d42 8625 dest = ent->plt.offset;
411e1bfb
AM
8626 break;
8627 }
176a0d42 8628 if (dest >= (bfd_vma) -2)
721956f4
AM
8629 abort ();
8630
176a0d42
AM
8631 dest &= ~ (bfd_vma) 1;
8632 dest += (htab->plt->output_offset
8633 + htab->plt->output_section->vma);
8634
8635 off = (dest
8636 - elf_gp (htab->plt->output_section->owner)
8637 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8638
ad8e1ba5 8639 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM
8640 {
8641 (*_bfd_error_handler)
8642 (_("linkage table error against `%s'"),
8643 stub_entry->h->elf.root.root.string);
8644 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
8645 htab->stub_error = TRUE;
8646 return FALSE;
721956f4
AM
8647 }
8648
176a0d42
AM
8649 r = NULL;
8650 if (info->emitrelocations)
8651 {
8652 r = get_relocs (stub_entry->stub_sec,
8653 (2 + (PPC_HA (off) != 0)
8654 + (PPC_HA (off + 16) == PPC_HA (off))));
8655 if (r == NULL)
8656 return FALSE;
8657 r[0].r_offset = loc - stub_entry->stub_sec->contents;
8658 r[0].r_addend = dest;
8659 }
8660 p = build_plt_stub (htab->stub_bfd, loc, off, r);
721956f4
AM
8661 size = p - loc;
8662 break;
8663
8664 default:
8665 BFD_FAIL ();
b34976b6 8666 return FALSE;
721956f4
AM
8667 }
8668
eea6121a 8669 stub_entry->stub_sec->size += size;
97b639ba 8670
ee75fd95 8671 if (htab->emit_stub_syms)
97b639ba
AM
8672 {
8673 struct elf_link_hash_entry *h;
ee75fd95
AM
8674 size_t len1, len2;
8675 char *name;
8676 const char *const stub_str[] = { "long_branch",
8677 "long_branch_r2off",
8678 "plt_branch",
8679 "plt_branch_r2off",
8680 "plt_call" };
8681
8682 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8683 len2 = strlen (stub_entry->root.string);
8684 name = bfd_malloc (len1 + len2 + 2);
8685 if (name == NULL)
8686 return FALSE;
8687 memcpy (name, stub_entry->root.string, 9);
8688 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8689 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8690 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM
8691 if (h == NULL)
8692 return FALSE;
8693 if (h->root.type == bfd_link_hash_new)
8694 {
8695 h->root.type = bfd_link_hash_defined;
8696 h->root.u.def.section = stub_entry->stub_sec;
8697 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM
8698 h->ref_regular = 1;
8699 h->def_regular = 1;
8700 h->ref_regular_nonweak = 1;
8701 h->forced_local = 1;
8702 h->non_elf = 0;
97b639ba
AM
8703 }
8704 }
8705
b34976b6 8706 return TRUE;
721956f4
AM
8707}
8708
8709/* As above, but don't actually build the stub. Just bump offset so
8710 we know stub section sizes, and select plt_branch stubs where
8711 long_branch stubs won't do. */
8712
b34976b6 8713static bfd_boolean
4ce794b7 8714ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM
8715{
8716 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8717 struct bfd_link_info *info;
721956f4
AM
8718 struct ppc_link_hash_table *htab;
8719 bfd_vma off;
8720 int size;
8721
8722 /* Massage our args to the form they really have. */
8723 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM
8724 info = in_arg;
8725
8726 htab = ppc_hash_table (info);
721956f4
AM
8727
8728 if (stub_entry->stub_type == ppc_stub_plt_call)
8729 {
411e1bfb 8730 struct plt_entry *ent;
58ac9f71 8731 off = (bfd_vma) -1;
411e1bfb
AM
8732 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8733 if (ent->addend == stub_entry->addend)
8734 {
8735 off = ent->plt.offset & ~(bfd_vma) 1;
8736 break;
8737 }
58ac9f71 8738 if (off >= (bfd_vma) -2)
411e1bfb 8739 abort ();
4ce794b7
AM
8740 off += (htab->plt->output_offset
8741 + htab->plt->output_section->vma
8742 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8743 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8744
ad8e1ba5 8745 size = PLT_CALL_STUB_SIZE;
ac2df442
AM
8746 if (PPC_HA (off) == 0)
8747 size -= 4;
4ce794b7 8748 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4 8749 size += 4;
176a0d42
AM
8750 if (info->emitrelocations)
8751 {
8752 stub_entry->stub_sec->reloc_count
8753 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
8754 stub_entry->stub_sec->flags |= SEC_RELOC;
8755 }
721956f4
AM
8756 }
8757 else
8758 {
ad8e1ba5
AM
8759 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8760 variants. */
ac2df442
AM
8761 bfd_vma r2off = 0;
8762
721956f4
AM
8763 off = (stub_entry->target_value
8764 + stub_entry->target_section->output_offset
8765 + stub_entry->target_section->output_section->vma);
eea6121a 8766 off -= (stub_entry->stub_sec->size
721956f4
AM
8767 + stub_entry->stub_sec->output_offset
8768 + stub_entry->stub_sec->output_section->vma);
8769
ad8e1ba5
AM
8770 /* Reset the stub type from the plt variant in case we now
8771 can reach with a shorter stub. */
8772 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8773 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8774
8775 size = 4;
8776 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8777 {
ac2df442
AM
8778 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8779 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8780 size = 12;
8781 if (PPC_HA (r2off) != 0)
8782 size = 16;
8783 off -= size - 4;
ad8e1ba5
AM
8784 }
8785
8786 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM
8787 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8788 {
8789 struct ppc_branch_hash_entry *br_entry;
8790
8791 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8792 stub_entry->root.string + 9,
b34976b6 8793 TRUE, FALSE);
721956f4
AM
8794 if (br_entry == NULL)
8795 {
8796 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8797 stub_entry->root.string);
b34976b6
AM
8798 htab->stub_error = TRUE;
8799 return FALSE;
721956f4
AM
8800 }
8801
8802 if (br_entry->iter != htab->stub_iteration)
8803 {
8804 br_entry->iter = htab->stub_iteration;
eea6121a
AM
8805 br_entry->offset = htab->brlt->size;
8806 htab->brlt->size += 8;
63bc6f6c 8807
ee75fd95 8808 if (htab->relbrlt != NULL)
eea6121a 8809 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM
8810 else if (info->emitrelocations)
8811 {
8812 htab->brlt->reloc_count += 1;
8813 htab->brlt->flags |= SEC_RELOC;
8814 }
721956f4 8815 }
ad8e1ba5
AM
8816
8817 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM
8818 off = (br_entry->offset
8819 + htab->brlt->output_offset
8820 + htab->brlt->output_section->vma
8821 - elf_gp (htab->brlt->output_section->owner)
8822 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8823
176a0d42
AM
8824 if (info->emitrelocations)
8825 {
8826 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
8827 stub_entry->stub_sec->flags |= SEC_RELOC;
8828 }
8829
ac2df442
AM
8830 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8831 {
8832 size = 12;
176a0d42 8833 if (PPC_HA (off) != 0)
ac2df442
AM
8834 size = 16;
8835 }
8836 else
8837 {
8838 size = 20;
176a0d42 8839 if (PPC_HA (off) != 0)
ac2df442
AM
8840 size += 4;
8841
8842 if (PPC_HA (r2off) != 0)
8843 size += 4;
8844 }
721956f4 8845 }
84f5d08e
AM
8846 else if (info->emitrelocations)
8847 {
8848 stub_entry->stub_sec->reloc_count += 1;
8849 stub_entry->stub_sec->flags |= SEC_RELOC;
8850 }
721956f4
AM
8851 }
8852
eea6121a 8853 stub_entry->stub_sec->size += size;
b34976b6 8854 return TRUE;
721956f4
AM
8855}
8856
8857/* Set up various things so that we can make a list of input sections
8858 for each output section included in the link. Returns -1 on error,
cedb70c5 8859 0 when no stubs will be needed, and 1 on success. */
721956f4
AM
8860
8861int
4c52953f
AM
8862ppc64_elf_setup_section_lists (bfd *output_bfd,
8863 struct bfd_link_info *info,
8864 int no_multi_toc)
721956f4
AM
8865{
8866 bfd *input_bfd;
734b6cf9 8867 int top_id, top_index, id;
721956f4 8868 asection *section;
734b6cf9 8869 asection **input_list;
721956f4
AM
8870 bfd_size_type amt;
8871 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8872
4c52953f
AM
8873 htab->no_multi_toc = no_multi_toc;
8874
4ce794b7 8875 if (htab->brlt == NULL)
721956f4
AM
8876 return 0;
8877
1e2f5b6e 8878 /* Find the top input section id. */
3d6f9012 8879 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM
8880 input_bfd != NULL;
8881 input_bfd = input_bfd->link_next)
8882 {
721956f4
AM
8883 for (section = input_bfd->sections;
8884 section != NULL;
8885 section = section->next)
8886 {
8887 if (top_id < section->id)
8888 top_id = section->id;
8889 }
8890 }
721956f4 8891
8f3bab57 8892 htab->top_id = top_id;
721956f4 8893 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 8894 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM
8895 if (htab->stub_group == NULL)
8896 return -1;
8897
3d6f9012
AM
8898 /* Set toc_off for com, und, abs and ind sections. */
8899 for (id = 0; id < 3; id++)
8900 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 8901
3d6f9012 8902 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM
8903
8904 /* We can't use output_bfd->section_count here to find the top output
8905 section index as some sections may have been removed, and
8423293d 8906 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM
8907 for (section = output_bfd->sections, top_index = 0;
8908 section != NULL;
8909 section = section->next)
8910 {
8911 if (top_index < section->index)
8912 top_index = section->index;
8913 }
8914
8915 htab->top_index = top_index;
8916 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 8917 input_list = bfd_zmalloc (amt);
734b6cf9
AM
8918 htab->input_list = input_list;
8919 if (input_list == NULL)
8920 return -1;
8921
721956f4
AM
8922 return 1;
8923}
8924
e717da7e
AM
8925/* The linker repeatedly calls this function for each TOC input section
8926 and linker generated GOT section. Group input bfds such that the toc
8927 within a group is less than 64k in size. Will break with cute linker
8928 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM
8929
8930void
4ce794b7 8931ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM
8932{
8933 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8934
4c52953f
AM
8935 if (!htab->no_multi_toc)
8936 {
8937 bfd_vma addr = isec->output_offset + isec->output_section->vma;
8938 bfd_vma off = addr - htab->toc_curr;
8939
8940 if (off + isec->size > 0x10000)
8941 htab->toc_curr = addr;
99877b66 8942
4c52953f
AM
8943 elf_gp (isec->owner) = (htab->toc_curr
8944 - elf_gp (isec->output_section->owner)
8945 + TOC_BASE_OFF);
8946 }
ad8e1ba5
AM
8947}
8948
8949/* Called after the last call to the above function. */
8950
8951void
4c52953f 8952ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM
8953{
8954 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 8955
4c52953f
AM
8956 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
8957
ad8e1ba5
AM
8958 /* toc_curr tracks the TOC offset used for code sections below in
8959 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 8960 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM
8961}
8962
9b5ecbd0
AM
8963/* No toc references were found in ISEC. If the code in ISEC makes no
8964 calls, then there's no need to use toc adjusting stubs when branching
8965 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM
8966 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8967 needed, and 2 if a cyclical call-graph was found but no other reason
8968 for a stub was detected. If called from the top level, a return of
8969 2 means the same as a return of 0. */
9b5ecbd0
AM
8970
8971static int
4ce794b7 8972toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 8973{
4c52953f
AM
8974 Elf_Internal_Rela *relstart, *rel;
8975 Elf_Internal_Sym *local_syms;
9b5ecbd0 8976 int ret;
4c52953f 8977 struct ppc_link_hash_table *htab;
9b5ecbd0 8978
772119ce
AM
8979 /* We know none of our code bearing sections will need toc stubs. */
8980 if ((isec->flags & SEC_LINKER_CREATED) != 0)
8981 return 0;
8982
eea6121a 8983 if (isec->size == 0)
082c50f8
AM
8984 return 0;
8985
4c52953f
AM
8986 if (isec->output_section == NULL)
8987 return 0;
8988
4c52953f
AM
8989 if (isec->reloc_count == 0)
8990 return 0;
8991
8992 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
8993 info->keep_memory);
8994 if (relstart == NULL)
8995 return -1;
8996
8997 /* Look for branches to outside of this section. */
8998 local_syms = NULL;
8999 ret = 0;
9000 htab = ppc_hash_table (info);
9001 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 9002 {
4c52953f
AM
9003 enum elf_ppc64_reloc_type r_type;
9004 unsigned long r_symndx;
9005 struct elf_link_hash_entry *h;
9006 Elf_Internal_Sym *sym;
9007 asection *sym_sec;
74f0fb50 9008 struct _opd_sec_data *opd;
4c52953f
AM
9009 bfd_vma sym_value;
9010 bfd_vma dest;
9011
9012 r_type = ELF64_R_TYPE (rel->r_info);
9013 if (r_type != R_PPC64_REL24
9014 && r_type != R_PPC64_REL14
9015 && r_type != R_PPC64_REL14_BRTAKEN
9016 && r_type != R_PPC64_REL14_BRNTAKEN)
9017 continue;
9018
9019 r_symndx = ELF64_R_SYM (rel->r_info);
9020 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
9021 isec->owner))
9b5ecbd0 9022 {
4c52953f
AM
9023 ret = -1;
9024 break;
9b5ecbd0 9025 }
9b5ecbd0 9026
2917689a
AM
9027 /* Calls to dynamic lib functions go through a plt call stub
9028 that uses r2. Branches to undefined symbols might be a call
9029 using old-style dot symbols that can be satisfied by a plt
9030 call into a new-style dynamic library. */
4c52953f 9031 if (sym_sec == NULL)
2917689a
AM
9032 {
9033 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9034 if (eh != NULL
9035 && eh->oh != NULL
9036 && eh->oh->elf.plt.plist != NULL)
9037 {
9038 ret = 1;
9039 break;
9040 }
4c52953f 9041
2917689a
AM
9042 /* Ignore other undefined symbols. */
9043 continue;
9044 }
9045
9046 /* Assume branches to other sections not included in the link need
9047 stubs too, to cover -R and absolute syms. */
4c52953f
AM
9048 if (sym_sec->output_section == NULL)
9049 {
9050 ret = 1;
9051 break;
9052 }
9053
9054 if (h == NULL)
9055 sym_value = sym->st_value;
9056 else
9057 {
9058 if (h->root.type != bfd_link_hash_defined
9059 && h->root.type != bfd_link_hash_defweak)
9060 abort ();
9061 sym_value = h->root.u.def.value;
9062 }
9063 sym_value += rel->r_addend;
9064
9065 /* If this branch reloc uses an opd sym, find the code section. */
74f0fb50
AM
9066 opd = get_opd_info (sym_sec);
9067 if (opd != NULL)
4c52953f 9068 {
74f0fb50 9069 if (h == NULL && opd->adjust != NULL)
4c52953f
AM
9070 {
9071 long adjust;
9072
74f0fb50 9073 adjust = opd->adjust[sym->st_value / 8];
4c52953f
AM
9074 if (adjust == -1)
9075 /* Assume deleted functions won't ever be called. */
9076 continue;
9077 sym_value += adjust;
9078 }
9079
9080 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
9081 if (dest == (bfd_vma) -1)
9082 continue;
9083 }
9084 else
9085 dest = (sym_value
9086 + sym_sec->output_offset
9087 + sym_sec->output_section->vma);
9088
9089 /* Ignore branch to self. */
9090 if (sym_sec == isec)
9091 continue;
9092
9093 /* If the called function uses the toc, we need a stub. */
9094 if (sym_sec->has_toc_reloc
9095 || sym_sec->makes_toc_func_call)
9096 {
9097 ret = 1;
9098 break;
9099 }
9100
9101 /* Assume any branch that needs a long branch stub might in fact
9102 need a plt_branch stub. A plt_branch stub uses r2. */
9103 else if (dest - (isec->output_offset
9104 + isec->output_section->vma
9105 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM
9106 {
9107 ret = 1;
9108 break;
9109 }
4c52953f
AM
9110
9111 /* If calling back to a section in the process of being tested, we
9112 can't say for sure that no toc adjusting stubs are needed, so
9113 don't return zero. */
9114 else if (sym_sec->call_check_in_progress)
9115 ret = 2;
9116
9117 /* Branches to another section that itself doesn't have any TOC
9118 references are OK. Recursively call ourselves to check. */
9119 else if (sym_sec->id <= htab->top_id
9120 && htab->stub_group[sym_sec->id].toc_off == 0)
9121 {
9122 int recur;
9123
9124 /* Mark current section as indeterminate, so that other
9125 sections that call back to current won't be marked as
9126 known. */
9127 isec->call_check_in_progress = 1;
9128 recur = toc_adjusting_stub_needed (info, sym_sec);
9129 isec->call_check_in_progress = 0;
9130
9131 if (recur < 0)
9132 {
9133 /* An error. Exit. */
9134 ret = -1;
9135 break;
9136 }
9137 else if (recur <= 1)
9138 {
9139 /* Known result. Mark as checked and set section flag. */
9140 htab->stub_group[sym_sec->id].toc_off = 1;
9141 if (recur != 0)
9142 {
9143 sym_sec->makes_toc_func_call = 1;
9144 ret = 1;
9145 break;
9146 }
9147 }
9148 else
9149 {
9150 /* Unknown result. Continue checking. */
9151 ret = 2;
9152 }
9153 }
9b5ecbd0
AM
9154 }
9155
4c52953f 9156 if (local_syms != NULL
0ffa91dd 9157 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
4c52953f
AM
9158 free (local_syms);
9159 if (elf_section_data (isec)->relocs != relstart)
9160 free (relstart);
9161
9b5ecbd0
AM
9162 return ret;
9163}
9164
721956f4
AM
9165/* The linker repeatedly calls this function for each input section,
9166 in the order that input sections are linked into output sections.
9167 Build lists of input sections to determine groupings between which
9168 we may insert linker stubs. */
9169
9b5ecbd0 9170bfd_boolean
4ce794b7 9171ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM
9172{
9173 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9174
734b6cf9
AM
9175 if ((isec->output_section->flags & SEC_CODE) != 0
9176 && isec->output_section->index <= htab->top_index)
721956f4 9177 {
734b6cf9 9178 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9179 /* Steal the link_sec pointer for our list. */
721956f4 9180#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM
9181 /* This happens to make the list in reverse order,
9182 which is what we want. */
734b6cf9
AM
9183 PREV_SEC (isec) = *list;
9184 *list = isec;
721956f4 9185 }
ad8e1ba5 9186
4c52953f 9187 if (htab->multi_toc_needed)
9b5ecbd0 9188 {
4c52953f
AM
9189 /* If a code section has a function that uses the TOC then we need
9190 to use the right TOC (obviously). Also, make sure that .opd gets
9191 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM
9192 can't find their function symbol (shouldn't ever happen now).
9193 Also specially treat .fixup for the linux kernel. .fixup
9194 contains branches, but only back to the function that hit an
9195 exception. */
9196 if (isec->has_toc_reloc
9197 || (isec->flags & SEC_CODE) == 0
9198 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM
9199 {
9200 if (elf_gp (isec->owner) != 0)
9201 htab->toc_curr = elf_gp (isec->owner);
9202 }
9203 else if (htab->stub_group[isec->id].toc_off == 0)
9204 {
9205 int ret = toc_adjusting_stub_needed (info, isec);
9206 if (ret < 0)
9207 return FALSE;
9208 else
9209 isec->makes_toc_func_call = ret & 1;
9210 }
9b5ecbd0 9211 }
ad8e1ba5
AM
9212
9213 /* Functions that don't use the TOC can belong in any TOC group.
9214 Use the last TOC base. This happens to make _init and _fini
9215 pasting work. */
9216 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9217 return TRUE;
721956f4
AM
9218}
9219
9220/* See whether we can group stub sections together. Grouping stub
9221 sections may result in fewer stubs. More importantly, we need to
9222 put all .init* and .fini* stubs at the beginning of the .init or
9223 .fini output sections respectively, because glibc splits the
9224 _init and _fini functions into multiple parts. Putting a stub in
9225 the middle of a function is not a good idea. */
9226
9227static void
4ce794b7
AM
9228group_sections (struct ppc_link_hash_table *htab,
9229 bfd_size_type stub_group_size,
9230 bfd_boolean stubs_always_before_branch)
721956f4 9231{
7c8fe5c4
AM
9232 asection **list;
9233 bfd_size_type stub14_group_size;
9234 bfd_boolean suppress_size_errors;
9235
9236 suppress_size_errors = FALSE;
9237 stub14_group_size = stub_group_size;
9238 if (stub_group_size == 1)
9239 {
9240 /* Default values. */
9241 if (stubs_always_before_branch)
9242 {
9243 stub_group_size = 0x1e00000;
9244 stub14_group_size = 0x7800;
9245 }
9246 else
9247 {
9248 stub_group_size = 0x1c00000;
9249 stub14_group_size = 0x7000;
9250 }
9251 suppress_size_errors = TRUE;
9252 }
9253
9254 list = htab->input_list + htab->top_index;
734b6cf9 9255 do
721956f4 9256 {
734b6cf9
AM
9257 asection *tail = *list;
9258 while (tail != NULL)
721956f4 9259 {
734b6cf9
AM
9260 asection *curr;
9261 asection *prev;
9262 bfd_size_type total;
9263 bfd_boolean big_sec;
9264 bfd_vma curr_toc;
9265
9266 curr = tail;
eea6121a 9267 total = tail->size;
7c8fe5c4
AM
9268 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9269 ? stub14_group_size : stub_group_size);
9270 if (big_sec && !suppress_size_errors)
5c3dead3
AM
9271 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9272 tail->owner, tail);
734b6cf9
AM
9273 curr_toc = htab->stub_group[tail->id].toc_off;
9274
9275 while ((prev = PREV_SEC (curr)) != NULL
9276 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM
9277 < (ppc64_elf_section_data (prev)->has_14bit_branch
9278 ? stub14_group_size : stub_group_size))
ad8e1ba5 9279 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM
9280 curr = prev;
9281
9282 /* OK, the size from the start of CURR to the end is less
9283 than stub_group_size and thus can be handled by one stub
9284 section. (or the tail section is itself larger than
9285 stub_group_size, in which case we may be toast.) We
9286 should really be keeping track of the total size of stubs
9287 added here, as stubs contribute to the final output
9288 section size. That's a little tricky, and this way will
9289 only break if stubs added make the total size more than
9290 2^25, ie. for the default stub_group_size, if stubs total
9291 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9292 do
721956f4
AM
9293 {
9294 prev = PREV_SEC (tail);
734b6cf9 9295 /* Set up this stub group. */
721956f4
AM
9296 htab->stub_group[tail->id].link_sec = curr;
9297 }
734b6cf9
AM
9298 while (tail != curr && (tail = prev) != NULL);
9299
9300 /* But wait, there's more! Input sections up to stub_group_size
9301 bytes before the stub section can be handled by it too.
9302 Don't do this if we have a really large section after the
9303 stubs, as adding more stubs increases the chance that
9304 branches may not reach into the stub section. */
9305 if (!stubs_always_before_branch && !big_sec)
9306 {
9307 total = 0;
9308 while (prev != NULL
9309 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM
9310 < (ppc64_elf_section_data (prev)->has_14bit_branch
9311 ? stub14_group_size : stub_group_size))
734b6cf9
AM
9312 && htab->stub_group[prev->id].toc_off == curr_toc)
9313 {
9314 tail = prev;
9315 prev = PREV_SEC (tail);
9316 htab->stub_group[tail->id].link_sec = curr;
9317 }
9318 }
9319 tail = prev;
721956f4
AM
9320 }
9321 }
734b6cf9
AM
9322 while (list-- != htab->input_list);
9323 free (htab->input_list);
721956f4
AM
9324#undef PREV_SEC
9325}
9326
721956f4
AM
9327/* Determine and set the size of the stub section for a final link.
9328
9329 The basic idea here is to examine all the relocations looking for
9330 PC-relative calls to a target that is unreachable with a "bl"
9331 instruction. */
9332
b34976b6 9333bfd_boolean
4ce794b7 9334ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM
9335 struct bfd_link_info *info,
9336 bfd_signed_vma group_size,
9337 asection *(*add_stub_section) (const char *, asection *),
9338 void (*layout_sections_again) (void))
721956f4
AM
9339{
9340 bfd_size_type stub_group_size;
b34976b6 9341 bfd_boolean stubs_always_before_branch;
721956f4
AM
9342 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9343
9344 /* Stash our params away. */
721956f4
AM
9345 htab->add_stub_section = add_stub_section;
9346 htab->layout_sections_again = layout_sections_again;
9347 stubs_always_before_branch = group_size < 0;
9348 if (group_size < 0)
9349 stub_group_size = -group_size;
9350 else
9351 stub_group_size = group_size;
721956f4
AM
9352
9353 group_sections (htab, stub_group_size, stubs_always_before_branch);
9354
721956f4
AM
9355 while (1)
9356 {
9357 bfd *input_bfd;
9358 unsigned int bfd_indx;
9359 asection *stub_sec;
721956f4
AM
9360
9361 htab->stub_iteration += 1;
721956f4
AM
9362
9363 for (input_bfd = info->input_bfds, bfd_indx = 0;
9364 input_bfd != NULL;
9365 input_bfd = input_bfd->link_next, bfd_indx++)
9366 {
9367 Elf_Internal_Shdr *symtab_hdr;
9368 asection *section;
6cdc0ccc 9369 Elf_Internal_Sym *local_syms = NULL;
721956f4 9370
0c8d6e5c 9371 if (!is_ppc64_elf (input_bfd))
67f93c31
AM
9372 continue;
9373
721956f4 9374 /* We'll need the symbol table in a second. */
0ffa91dd 9375 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM
9376 if (symtab_hdr->sh_info == 0)
9377 continue;
9378
721956f4
AM
9379 /* Walk over each section attached to the input bfd. */
9380 for (section = input_bfd->sections;
9381 section != NULL;
9382 section = section->next)
9383 {
721956f4 9384 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM
9385
9386 /* If there aren't any relocs, then there's nothing more
9387 to do. */
9388 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM
9389 || (section->flags & SEC_ALLOC) == 0
9390 || (section->flags & SEC_LOAD) == 0
9391 || (section->flags & SEC_CODE) == 0
721956f4
AM
9392 || section->reloc_count == 0)
9393 continue;
9394
9395 /* If this section is a link-once section that will be
9396 discarded, then don't create any stubs. */
9397 if (section->output_section == NULL
9398 || section->output_section->owner != output_bfd)
9399 continue;
9400
1e2f5b6e
AM
9401 /* Get the relocs. */
9402 internal_relocs
4ce794b7 9403 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9404 info->keep_memory);
721956f4 9405 if (internal_relocs == NULL)
1e2f5b6e 9406 goto error_ret_free_local;
721956f4
AM
9407
9408 /* Now examine each relocation. */
9409 irela = internal_relocs;
9410 irelaend = irela + section->reloc_count;
9411 for (; irela < irelaend; irela++)
9412 {
4ce794b7
AM
9413 enum elf_ppc64_reloc_type r_type;
9414 unsigned int r_indx;
721956f4
AM
9415 enum ppc_stub_type stub_type;
9416 struct ppc_stub_hash_entry *stub_entry;
8387904d 9417 asection *sym_sec, *code_sec;
721956f4
AM
9418 bfd_vma sym_value;
9419 bfd_vma destination;
8843416a 9420 bfd_boolean ok_dest;
721956f4 9421 struct ppc_link_hash_entry *hash;
8387904d 9422 struct ppc_link_hash_entry *fdh;
411e1bfb
AM
9423 struct elf_link_hash_entry *h;
9424 Elf_Internal_Sym *sym;
721956f4
AM
9425 char *stub_name;
9426 const asection *id_sec;
74f0fb50 9427 struct _opd_sec_data *opd;
721956f4
AM
9428
9429 r_type = ELF64_R_TYPE (irela->r_info);
9430 r_indx = ELF64_R_SYM (irela->r_info);
9431
4ce794b7 9432 if (r_type >= R_PPC64_max)
721956f4
AM
9433 {
9434 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9435 goto error_ret_free_internal;
721956f4
AM
9436 }
9437
9438 /* Only look for stubs on branch instructions. */
4ce794b7
AM
9439 if (r_type != R_PPC64_REL24
9440 && r_type != R_PPC64_REL14
9441 && r_type != R_PPC64_REL14_BRTAKEN
9442 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM
9443 continue;
9444
9445 /* Now determine the call target, its name, value,
9446 section. */
411e1bfb
AM
9447 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9448 r_indx, input_bfd))
9449 goto error_ret_free_internal;
9450 hash = (struct ppc_link_hash_entry *) h;
9451
8843416a 9452 ok_dest = FALSE;
8387904d 9453 fdh = NULL;
7fe2b9a6 9454 sym_value = 0;
411e1bfb 9455 if (hash == NULL)
721956f4 9456 {
411e1bfb 9457 sym_value = sym->st_value;
8843416a 9458 ok_dest = TRUE;
721956f4 9459 }
7fe2b9a6
AM
9460 else if (hash->elf.root.type == bfd_link_hash_defined
9461 || hash->elf.root.type == bfd_link_hash_defweak)
9462 {
9463 sym_value = hash->elf.root.u.def.value;
9464 if (sym_sec->output_section != NULL)
9465 ok_dest = TRUE;
9466 }
9467 else if (hash->elf.root.type == bfd_link_hash_undefweak
9468 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9469 {
99877b66 9470 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM
9471 use the func descriptor sym instead if it is
9472 defined. */
ceb1f1ef 9473 if (hash->elf.root.root.string[0] == '.'
8387904d
AM
9474 && (fdh = get_fdh (hash, htab)) != NULL)
9475 {
8387904d
AM
9476 if (fdh->elf.root.type == bfd_link_hash_defined
9477 || fdh->elf.root.type == bfd_link_hash_defweak)
9478 {
9479 sym_sec = fdh->elf.root.u.def.section;
9480 sym_value = fdh->elf.root.u.def.value;
9481 if (sym_sec->output_section != NULL)
9482 ok_dest = TRUE;
9483 }
99877b66
AM
9484 else
9485 fdh = NULL;
8387904d 9486 }
7fe2b9a6
AM
9487 }
9488 else
9489 {
9490 bfd_set_error (bfd_error_bad_value);
9491 goto error_ret_free_internal;
721956f4
AM
9492 }
9493
8843416a
AM
9494 destination = 0;
9495 if (ok_dest)
9496 {
9497 sym_value += irela->r_addend;
9498 destination = (sym_value
9499 + sym_sec->output_offset
9500 + sym_sec->output_section->vma);
9501 }
9502
8387904d 9503 code_sec = sym_sec;
74f0fb50
AM
9504 opd = get_opd_info (sym_sec);
9505 if (opd != NULL)
8387904d
AM
9506 {
9507 bfd_vma dest;
9508
74f0fb50 9509 if (hash == NULL && opd->adjust != NULL)
8387904d 9510 {
74f0fb50 9511 long adjust = opd->adjust[sym_value / 8];
8387904d
AM
9512 if (adjust == -1)
9513 continue;
9514 sym_value += adjust;
9515 }
9516 dest = opd_entry_value (sym_sec, sym_value,
9517 &code_sec, &sym_value);
9518 if (dest != (bfd_vma) -1)
9519 {
9520 destination = dest;
9521 if (fdh != NULL)
9522 {
9523 /* Fixup old ABI sym to point at code
9524 entry. */
99877b66 9525 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM
9526 hash->elf.root.u.def.section = code_sec;
9527 hash->elf.root.u.def.value = sym_value;
9528 }
9529 }
9530 }
9531
721956f4
AM
9532 /* Determine what (if any) linker stub is needed. */
9533 stub_type = ppc_type_of_stub (section, irela, &hash,
9534 destination);
ad8e1ba5
AM
9535
9536 if (stub_type != ppc_stub_plt_call)
9537 {
9538 /* Check whether we need a TOC adjusting stub.
9539 Since the linker pastes together pieces from
9540 different object files when creating the
9541 _init and _fini functions, it may be that a
9542 call to what looks like a local sym is in
9543 fact a call needing a TOC adjustment. */
8387904d
AM
9544 if (code_sec != NULL
9545 && code_sec->output_section != NULL
9546 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9547 != htab->stub_group[section->id].toc_off)
4c52953f
AM
9548 && (code_sec->has_toc_reloc
9549 || code_sec->makes_toc_func_call))
ad8e1ba5
AM
9550 stub_type = ppc_stub_long_branch_r2off;
9551 }
9552
721956f4
AM
9553 if (stub_type == ppc_stub_none)
9554 continue;
9555
411e1bfb
AM
9556 /* __tls_get_addr calls might be eliminated. */
9557 if (stub_type != ppc_stub_plt_call
9558 && hash != NULL
8387904d
AM
9559 && (hash == htab->tls_get_addr
9560 || hash == htab->tls_get_addr_fd)
411e1bfb
AM
9561 && section->has_tls_reloc
9562 && irela != internal_relocs)
9563 {
9564 /* Get tls info. */
e7b938ca 9565 char *tls_mask;
411e1bfb 9566
0d4792f7 9567 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM
9568 irela - 1, input_bfd))
9569 goto error_ret_free_internal;
e7b938ca 9570 if (*tls_mask != 0)
411e1bfb
AM
9571 continue;
9572 }
9573
721956f4
AM
9574 /* Support for grouping stub sections. */
9575 id_sec = htab->stub_group[section->id].link_sec;
9576
9577 /* Get the name of this stub. */
9578 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9579 if (!stub_name)
9580 goto error_ret_free_internal;
9581
9582 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9583 stub_name, FALSE, FALSE);
721956f4
AM
9584 if (stub_entry != NULL)
9585 {
9586 /* The proper stub has already been created. */
9587 free (stub_name);
9588 continue;
9589 }
9590
9591 stub_entry = ppc_add_stub (stub_name, section, htab);
9592 if (stub_entry == NULL)
9593 {
9594 free (stub_name);
6cdc0ccc
AM
9595 error_ret_free_internal:
9596 if (elf_section_data (section)->relocs == NULL)
9597 free (internal_relocs);
9598 error_ret_free_local:
9599 if (local_syms != NULL
9600 && (symtab_hdr->contents
9601 != (unsigned char *) local_syms))
9602 free (local_syms);
b34976b6 9603 return FALSE;
721956f4
AM
9604 }
9605
ad8e1ba5 9606 stub_entry->stub_type = stub_type;
721956f4 9607 stub_entry->target_value = sym_value;
8387904d 9608 stub_entry->target_section = code_sec;
721956f4 9609 stub_entry->h = hash;
411e1bfb 9610 stub_entry->addend = irela->r_addend;
ee75fd95
AM
9611
9612 if (stub_entry->h != NULL)
9613 htab->stub_globals += 1;
721956f4
AM
9614 }
9615
9616 /* We're done with the internal relocs, free them. */
6cdc0ccc 9617 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9618 free (internal_relocs);
721956f4 9619 }
6cdc0ccc
AM
9620
9621 if (local_syms != NULL
9622 && symtab_hdr->contents != (unsigned char *) local_syms)
9623 {
9624 if (!info->keep_memory)
9625 free (local_syms);
9626 else
9627 symtab_hdr->contents = (unsigned char *) local_syms;
9628 }
721956f4
AM
9629 }
9630
5c3dead3 9631 /* We may have added some stubs. Find out the new size of the
721956f4
AM
9632 stub sections. */
9633 for (stub_sec = htab->stub_bfd->sections;
9634 stub_sec != NULL;
9635 stub_sec = stub_sec->next)
e717da7e 9636 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9637 {
5c3dead3 9638 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM
9639 stub_sec->size = 0;
9640 stub_sec->reloc_count = 0;
84f5d08e 9641 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9642 }
eea6121a
AM
9643
9644 htab->brlt->size = 0;
84f5d08e
AM
9645 htab->brlt->reloc_count = 0;
9646 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9647 if (htab->relbrlt != NULL)
eea6121a 9648 htab->relbrlt->size = 0;
721956f4 9649
63bc6f6c 9650 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9651
176a0d42
AM
9652 if (info->emitrelocations
9653 && htab->glink != NULL && htab->glink->size != 0)
9654 {
9655 htab->glink->reloc_count = 1;
9656 htab->glink->flags |= SEC_RELOC;
9657 }
9658
5c3dead3
AM
9659 for (stub_sec = htab->stub_bfd->sections;
9660 stub_sec != NULL;
9661 stub_sec = stub_sec->next)
9662 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9663 && stub_sec->rawsize != stub_sec->size)
9664 break;
9665
9666 /* Exit from this loop when no stubs have been added, and no stubs
9667 have changed size. */
9668 if (stub_sec == NULL)
9669 break;
9670
721956f4
AM
9671 /* Ask the linker to do its stuff. */
9672 (*htab->layout_sections_again) ();
9673 }
9674
c456f082 9675 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM
9676 section is empty, but it's too late. If we strip sections here,
9677 the dynamic symbol table is corrupted since the section symbol
9678 for the stripped section isn't written. */
721956f4 9679
b34976b6 9680 return TRUE;
721956f4
AM
9681}
9682
9683/* Called after we have determined section placement. If sections
805fc799 9684 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9685
805fc799 9686bfd_vma
4ce794b7 9687ppc64_elf_toc (bfd *obfd)
721956f4 9688{
805fc799
AM
9689 asection *s;
9690 bfd_vma TOCstart;
721956f4 9691
805fc799
AM
9692 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9693 order. The TOC starts where the first of these sections starts. */
9694 s = bfd_get_section_by_name (obfd, ".got");
9695 if (s == NULL)
9696 s = bfd_get_section_by_name (obfd, ".toc");
9697 if (s == NULL)
9698 s = bfd_get_section_by_name (obfd, ".tocbss");
9699 if (s == NULL)
9700 s = bfd_get_section_by_name (obfd, ".plt");
9701 if (s == NULL)
9702 {
9703 /* This may happen for
9704 o references to TOC base (SYM@toc / TOC[tc0]) without a
9705 .toc directive
9706 o bad linker script
9707 o --gc-sections and empty TOC sections
9708
9709 FIXME: Warn user? */
9710
9711 /* Look for a likely section. We probably won't even be
9712 using TOCstart. */
9713 for (s = obfd->sections; s != NULL; s = s->next)
9714 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9715 == (SEC_ALLOC | SEC_SMALL_DATA))
9716 break;
721956f4 9717 if (s == NULL)
805fc799
AM
9718 for (s = obfd->sections; s != NULL; s = s->next)
9719 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9720 == (SEC_ALLOC | SEC_SMALL_DATA))
9721 break;
721956f4 9722 if (s == NULL)
805fc799
AM
9723 for (s = obfd->sections; s != NULL; s = s->next)
9724 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9725 break;
721956f4 9726 if (s == NULL)
805fc799
AM
9727 for (s = obfd->sections; s != NULL; s = s->next)
9728 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9729 break;
9730 }
721956f4 9731
805fc799
AM
9732 TOCstart = 0;
9733 if (s != NULL)
9734 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9735
805fc799 9736 return TOCstart;
721956f4
AM
9737}
9738
9739/* Build all the stubs associated with the current output file.
9740 The stubs are kept in a hash table attached to the main linker
9741 hash table. This function is called via gldelf64ppc_finish. */
9742
b34976b6 9743bfd_boolean
4ce794b7
AM
9744ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9745 struct bfd_link_info *info,
9746 char **stats)
5d1634d7
AM
9747{
9748 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9749 asection *stub_sec;
5d1634d7 9750 bfd_byte *p;
e717da7e 9751 int stub_sec_count = 0;
5d1634d7 9752
ad8e1ba5 9753 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM
9754
9755 /* Allocate memory to hold the linker stubs. */
721956f4
AM
9756 for (stub_sec = htab->stub_bfd->sections;
9757 stub_sec != NULL;
9758 stub_sec = stub_sec->next)
eea6121a
AM
9759 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9760 && stub_sec->size != 0)
e717da7e 9761 {
eea6121a
AM
9762 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9763 if (stub_sec->contents == NULL)
9764 return FALSE;
9765 /* We want to check that built size is the same as calculated
9766 size. rawsize is a convenient location to use. */
9767 stub_sec->rawsize = stub_sec->size;
9768 stub_sec->size = 0;
e717da7e 9769 }
5d1634d7 9770
23eb7e01 9771 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9772 {
9f951329 9773 unsigned int indx;
ad8e1ba5 9774 bfd_vma plt0;
9f951329 9775
721956f4 9776 /* Build the .glink plt call stub. */
97b639ba
AM
9777 if (htab->emit_stub_syms)
9778 {
9779 struct elf_link_hash_entry *h;
9780 h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE);
9781 if (h == NULL)
9782 return FALSE;
9783 if (h->root.type == bfd_link_hash_new)
9784 {
9785 h->root.type = bfd_link_hash_defined;
9786 h->root.u.def.section = htab->glink;
ee4bf8d2 9787 h->root.u.def.value = 8;
f5385ebf
AM
9788 h->ref_regular = 1;
9789 h->def_regular = 1;
9790 h->ref_regular_nonweak = 1;
9791 h->forced_local = 1;
9792 h->non_elf = 0;
97b639ba
AM
9793 }
9794 }
176a0d42
AM
9795 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
9796 if (info->emitrelocations)
9797 {
9798 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
9799 if (r == NULL)
9800 return FALSE;
9801 r->r_offset = (htab->glink->output_offset
9802 + htab->glink->output_section->vma);
9803 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
9804 r->r_addend = plt0;
9805 }
4ce794b7 9806 p = htab->glink->contents;
176a0d42 9807 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM
9808 bfd_put_64 (htab->glink->owner, plt0, p);
9809 p += 8;
9810 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9811 p += 4;
ee4bf8d2 9812 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9813 p += 4;
ee4bf8d2 9814 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9815 p += 4;
ee4bf8d2 9816 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9817 p += 4;
ee4bf8d2 9818 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9819 p += 4;
ee4bf8d2 9820 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9821 p += 4;
ee4bf8d2 9822 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9823 p += 4;
4ce794b7 9824 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9825 p += 4;
4ce794b7 9826 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9827 p += 4;
4ce794b7 9828 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9829 p += 4;
4ce794b7 9830 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9831 p += 4;
ee4bf8d2
AM
9832 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9833 {
9834 bfd_put_32 (htab->glink->owner, NOP, p);
9835 p += 4;
9836 }
ad8e1ba5 9837
9f951329
AM
9838 /* Build the .glink lazy link call stubs. */
9839 indx = 0;
eea6121a 9840 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM
9841 {
9842 if (indx < 0x8000)
9843 {
4ce794b7 9844 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM
9845 p += 4;
9846 }
9847 else
9848 {
4ce794b7 9849 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9850 p += 4;
4ce794b7 9851 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM
9852 p += 4;
9853 }
4ce794b7 9854 bfd_put_32 (htab->glink->owner,
ee4bf8d2 9855 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 9856 indx++;
9f951329
AM
9857 p += 4;
9858 }
eea6121a 9859 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 9860 }
5d1634d7 9861
eea6121a 9862 if (htab->brlt->size != 0)
721956f4 9863 {
4ce794b7 9864 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 9865 htab->brlt->size);
4ce794b7 9866 if (htab->brlt->contents == NULL)
b34976b6 9867 return FALSE;
721956f4 9868 }
ee75fd95 9869 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM
9870 {
9871 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 9872 htab->relbrlt->size);
63bc6f6c
AM
9873 if (htab->relbrlt->contents == NULL)
9874 return FALSE;
9875 }
5d1634d7 9876
721956f4
AM
9877 /* Build the stubs as directed by the stub hash table. */
9878 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 9879
aa8a7074
AM
9880 if (htab->relbrlt != NULL)
9881 htab->relbrlt->reloc_count = 0;
9882
721956f4
AM
9883 for (stub_sec = htab->stub_bfd->sections;
9884 stub_sec != NULL;
9885 stub_sec = stub_sec->next)
e717da7e
AM
9886 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
9887 {
9888 stub_sec_count += 1;
eea6121a 9889 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM
9890 break;
9891 }
5d1634d7 9892
721956f4 9893 if (stub_sec != NULL
eea6121a 9894 || htab->glink->rawsize != htab->glink->size)
5d1634d7 9895 {
b34976b6 9896 htab->stub_error = TRUE;
721956f4 9897 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 9898 }
721956f4 9899
d2a300cf
AM
9900 if (htab->stub_error)
9901 return FALSE;
9902
9903 if (stats != NULL)
9904 {
9905 *stats = bfd_malloc (500);
9906 if (*stats == NULL)
9907 return FALSE;
9908
ee75fd95 9909 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM
9910 " branch %lu\n"
9911 " toc adjust %lu\n"
9912 " long branch %lu\n"
9913 " long toc adj %lu\n"
9914 " plt call %lu"),
e717da7e 9915 stub_sec_count,
ee75fd95 9916 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM
9917 htab->stub_count[ppc_stub_long_branch - 1],
9918 htab->stub_count[ppc_stub_long_branch_r2off - 1],
9919 htab->stub_count[ppc_stub_plt_branch - 1],
9920 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
9921 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM
9922 }
9923 return TRUE;
5bd4f169
AM
9924}
9925
99877b66
AM
9926/* This function undoes the changes made by add_symbol_adjust. */
9927
9928static bfd_boolean
9929undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
9930{
9931 struct ppc_link_hash_entry *eh;
9932
9933 if (h->root.type == bfd_link_hash_indirect)
9934 return TRUE;
9935
9936 if (h->root.type == bfd_link_hash_warning)
9937 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9938
9939 eh = (struct ppc_link_hash_entry *) h;
9940 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
9941 return TRUE;
9942
9943 eh->elf.root.type = bfd_link_hash_undefined;
9944 return TRUE;
9945}
9946
9947void
9948ppc64_elf_restore_symbols (struct bfd_link_info *info)
9949{
9950 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9951 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
9952}
9953
60124e18
AM
9954/* What to do when ld finds relocations against symbols defined in
9955 discarded sections. */
9956
9957static unsigned int
9958ppc64_elf_action_discarded (asection *sec)
9959{
9960 if (strcmp (".opd", sec->name) == 0)
9961 return 0;
9962
9963 if (strcmp (".toc", sec->name) == 0)
9964 return 0;
9965
bce50a28
JJ
9966 if (strcmp (".toc1", sec->name) == 0)
9967 return 0;
9968
60124e18
AM
9969 return _bfd_elf_default_action_discarded (sec);
9970}
9971
5bd4f169
AM
9972/* The RELOCATE_SECTION function is called by the ELF backend linker
9973 to handle the relocations for a section.
9974
9975 The relocs are always passed as Rela structures; if the section
9976 actually uses Rel structures, the r_addend field will always be
9977 zero.
9978
9979 This function is responsible for adjust the section contents as
9980 necessary, and (if using Rela relocs and generating a
1049f94e 9981 relocatable output file) adjusting the reloc addend as
5bd4f169
AM
9982 necessary.
9983
9984 This function does not have to worry about setting the reloc
9985 address or the reloc symbol index.
9986
9987 LOCAL_SYMS is a pointer to the swapped in local symbols.
9988
9989 LOCAL_SECTIONS is an array giving the section in the input file
9990 corresponding to the st_shndx field of each local symbol.
9991
9992 The global hash table entry for the global symbols can be found
9993 via elf_sym_hashes (input_bfd).
9994
1049f94e 9995 When generating relocatable output, this function must handle
5bd4f169
AM
9996 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9997 going to be the section symbol corresponding to the output
9998 section, which means that the addend must be adjusted
9999 accordingly. */
10000
b34976b6 10001static bfd_boolean
4ce794b7
AM
10002ppc64_elf_relocate_section (bfd *output_bfd,
10003 struct bfd_link_info *info,
10004 bfd *input_bfd,
10005 asection *input_section,
10006 bfd_byte *contents,
10007 Elf_Internal_Rela *relocs,
10008 Elf_Internal_Sym *local_syms,
10009 asection **local_sections)
5bd4f169 10010{
65f38f15 10011 struct ppc_link_hash_table *htab;
5bd4f169
AM
10012 Elf_Internal_Shdr *symtab_hdr;
10013 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
10014 Elf_Internal_Rela *rel;
10015 Elf_Internal_Rela *relend;
411e1bfb
AM
10016 Elf_Internal_Rela outrel;
10017 bfd_byte *loc;
411e1bfb 10018 struct got_entry **local_got_ents;
5bd4f169 10019 bfd_vma TOCstart;
b34976b6
AM
10020 bfd_boolean ret = TRUE;
10021 bfd_boolean is_opd;
96e0dda4 10022 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 10023 bfd_boolean is_power4 = FALSE;
4fe5ca5b 10024 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 10025
65f38f15 10026 /* Initialize howto table if needed. */
5bd4f169 10027 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
10028 ppc_howto_init ();
10029
65f38f15 10030 htab = ppc_hash_table (info);
ee75fd95
AM
10031
10032 /* Don't relocate stub sections. */
10033 if (input_section->owner == htab->stub_bfd)
10034 return TRUE;
10035
0c8d6e5c 10036 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 10037
411e1bfb 10038 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 10039 TOCstart = elf_gp (output_bfd);
0ffa91dd 10040 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 10041 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 10042 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 10043
5bd4f169
AM
10044 rel = relocs;
10045 relend = relocs + input_section->reloc_count;
10046 for (; rel < relend; rel++)
10047 {
04c9666a 10048 enum elf_ppc64_reloc_type r_type;
4cc603a5 10049 bfd_vma addend, orig_addend;
5bd4f169
AM
10050 bfd_reloc_status_type r;
10051 Elf_Internal_Sym *sym;
10052 asection *sec;
039b3fef
AM
10053 struct elf_link_hash_entry *h_elf;
10054 struct ppc_link_hash_entry *h;
10055 struct ppc_link_hash_entry *fdh;
5bd4f169 10056 const char *sym_name;
0d4792f7 10057 unsigned long r_symndx, toc_symndx;
951fd09b 10058 char tls_mask, tls_gd, tls_type;
0d4792f7 10059 char sym_type;
5bd4f169 10060 bfd_vma relocation;
b34976b6
AM
10061 bfd_boolean unresolved_reloc;
10062 bfd_boolean warned;
50bc7936 10063 unsigned long insn, mask;
721956f4
AM
10064 struct ppc_stub_hash_entry *stub_entry;
10065 bfd_vma max_br_offset;
10066 bfd_vma from;
5bd4f169 10067
4ce794b7 10068 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 10069 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM
10070
10071 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10072 symbol of the previous ADDR64 reloc. The symbol gives us the
10073 proper TOC base to use. */
10074 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
10075 && rel != relocs
10076 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
10077 && is_opd)
10078 r_symndx = ELF64_R_SYM (rel[-1].r_info);
10079
4ce794b7
AM
10080 sym = NULL;
10081 sec = NULL;
039b3fef 10082 h_elf = NULL;
4ce794b7 10083 sym_name = NULL;
b34976b6
AM
10084 unresolved_reloc = FALSE;
10085 warned = FALSE;
4cc603a5 10086 orig_addend = rel->r_addend;
65f38f15 10087
0b13192e 10088 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM
10089 {
10090 /* It's a local symbol. */
74f0fb50 10091 struct _opd_sec_data *opd;
4025353c 10092
5bd4f169
AM
10093 sym = local_syms + r_symndx;
10094 sec = local_sections[r_symndx];
26c61ae5 10095 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 10096 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 10097 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM
10098 opd = get_opd_info (sec);
10099 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 10100 {
74f0fb50 10101 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM
10102 if (adjust == -1)
10103 relocation = 0;
10104 else
4cc603a5
AM
10105 {
10106 /* If this is a relocation against the opd section sym
10107 and we have edited .opd, adjust the reloc addend so
10108 that ld -r and ld --emit-relocs output is correct.
10109 If it is a reloc against some other .opd symbol,
10110 then the symbol value will be adjusted later. */
10111 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
10112 rel->r_addend += adjust;
10113 else
10114 relocation += adjust;
10115 }
1e2f5b6e 10116 }
5bd4f169
AM
10117 }
10118 else
10119 {
b2a8e766
AM
10120 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
10121 r_symndx, symtab_hdr, sym_hashes,
039b3fef 10122 h_elf, sec, relocation,
b2a8e766 10123 unresolved_reloc, warned);
039b3fef
AM
10124 sym_name = h_elf->root.root.string;
10125 sym_type = h_elf->type;
5bd4f169 10126 }
039b3fef 10127 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 10128
ab96bf03
AM
10129 if (sec != NULL && elf_discarded_section (sec))
10130 {
10131 /* For relocs against symbols from removed linkonce sections,
10132 or sections discarded by a linker script, we just want the
10133 section contents zeroed. Avoid any special processing. */
10134 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10135 contents + rel->r_offset);
10136 rel->r_info = 0;
10137 rel->r_addend = 0;
10138 continue;
10139 }
10140
10141 if (info->relocatable)
10142 continue;
10143
951fd09b
AM
10144 /* TLS optimizations. Replace instruction sequences and relocs
10145 based on information we collected in tls_optimize. We edit
10146 RELOCS so that --emit-relocs will output something sensible
10147 for the final instruction stream. */
10148 tls_mask = 0;
10149 tls_gd = 0;
0d4792f7 10150 toc_symndx = 0;
d881513a 10151 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM
10152 {
10153 if (h != NULL)
039b3fef 10154 tls_mask = h->tls_mask;
411e1bfb
AM
10155 else if (local_got_ents != NULL)
10156 {
e7b938ca
AM
10157 char *lgot_masks;
10158 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10159 tls_mask = lgot_masks[r_symndx];
411e1bfb 10160 }
0d4792f7
AM
10161 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10162 {
10163 /* Check for toc tls entries. */
10164 char *toc_tls;
10165
10166 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10167 rel, input_bfd))
10168 return FALSE;
10169
10170 if (toc_tls)
10171 tls_mask = *toc_tls;
10172 }
10173 }
10174
10175 /* Check that tls relocs are used with tls syms, and non-tls
10176 relocs are used with non-tls syms. */
10177 if (r_symndx != 0
10178 && r_type != R_PPC64_NONE
10179 && (h == NULL
039b3fef
AM
10180 || h->elf.root.type == bfd_link_hash_defined
10181 || h->elf.root.type == bfd_link_hash_defweak)
0d4792f7
AM
10182 && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS))
10183 {
10184 if (r_type == R_PPC64_TLS && tls_mask != 0)
10185 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10186 ;
10187 else
10188 (*_bfd_error_handler)
10189 (sym_type == STT_TLS
d003868e
AM
10190 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10191 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10192 input_bfd,
10193 input_section,
0d4792f7
AM
10194 (long) rel->r_offset,
10195 ppc64_elf_howto_table[r_type]->name,
10196 sym_name);
411e1bfb
AM
10197 }
10198
10199 /* Ensure reloc mapping code below stays sane. */
10200 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10201 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10202 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10203 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10204 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10205 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10206 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10207 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10208 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10209 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10210 abort ();
0d4792f7 10211
411e1bfb
AM
10212 switch (r_type)
10213 {
10214 default:
411e1bfb
AM
10215 break;
10216
10217 case R_PPC64_TOC16:
10218 case R_PPC64_TOC16_LO:
10219 case R_PPC64_TOC16_DS:
10220 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM
10221 {
10222 /* Check for toc tls entries. */
10223 char *toc_tls;
951fd09b 10224 int retval;
411e1bfb 10225
0d4792f7
AM
10226 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10227 rel, input_bfd);
951fd09b 10228 if (retval == 0)
411e1bfb
AM
10229 return FALSE;
10230
10231 if (toc_tls)
10232 {
951fd09b 10233 tls_mask = *toc_tls;
411e1bfb
AM
10234 if (r_type == R_PPC64_TOC16_DS
10235 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM
10236 {
10237 if (tls_mask != 0
10238 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10239 goto toctprel;
10240 }
411e1bfb 10241 else
951fd09b
AM
10242 {
10243 /* If we found a GD reloc pair, then we might be
10244 doing a GD->IE transition. */
10245 if (retval == 2)
10246 {
10247 tls_gd = TLS_TPRELGD;
10248 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10249 goto tls_ldgd_opt;
951fd09b
AM
10250 }
10251 else if (retval == 3)
10252 {
10253 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 10254 goto tls_ldgd_opt;
951fd09b
AM
10255 }
10256 }
411e1bfb
AM
10257 }
10258 }
10259 break;
10260
10261 case R_PPC64_GOT_TPREL16_DS:
10262 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM
10263 if (tls_mask != 0
10264 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10265 {
81407a69 10266 toctprel:
4fe5ca5b 10267 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM
10268 insn &= 31 << 21;
10269 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10270 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10271 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM
10272 if (toc_symndx != 0)
10273 {
10274 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10275 /* We changed the symbol. Start over in order to
10276 get h, sym, sec etc. right. */
10277 rel--;
10278 continue;
10279 }
10280 else
10281 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10282 }
10283 break;
10284
10285 case R_PPC64_TLS:
951fd09b
AM
10286 if (tls_mask != 0
10287 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10288 {
50bc7936 10289 bfd_vma rtra;
411e1bfb 10290 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10291 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM
10292 == ((31 << 26) | (13 << 11)))
10293 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10294 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM
10295 == ((31 << 26) | (13 << 16)))
10296 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10297 else
10298 abort ();
10299 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10300 /* add -> addi. */
10301 insn = 14 << 26;
10302 else if ((insn & (31 << 1)) == 23 << 1
10303 && ((insn & (31 << 6)) < 14 << 6
10304 || ((insn & (31 << 6)) >= 16 << 6
10305 && (insn & (31 << 6)) < 24 << 6)))
10306 /* load and store indexed -> dform. */
10307 insn = (32 | ((insn >> 6) & 31)) << 26;
10308 else if ((insn & (31 << 1)) == 21 << 1
10309 && (insn & (0x1a << 6)) == 0)
10310 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10311 insn = (((58 | ((insn >> 6) & 4)) << 26)
10312 | ((insn >> 6) & 1));
10313 else if ((insn & (31 << 1)) == 21 << 1
10314 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10315 /* lwax -> lwa. */
10316 insn = (58 << 26) | 2;
10317 else
10318 abort ();
10319 insn |= rtra;
10320 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10321 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM
10322 PPC64_TPREL16_LO which is at low-order half-word. */
10323 rel->r_offset += d_offset;
0d4792f7
AM
10324 r_type = R_PPC64_TPREL16_LO;
10325 if (toc_symndx != 0)
10326 {
10327 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10328 /* We changed the symbol. Start over in order to
10329 get h, sym, sec etc. right. */
10330 rel--;
10331 continue;
10332 }
10333 else
10334 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10335 }
10336 break;
10337
411e1bfb
AM
10338 case R_PPC64_GOT_TLSGD16_HI:
10339 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM
10340 tls_gd = TLS_TPRELGD;
10341 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10342 goto tls_gdld_hi;
10343 break;
10344
411e1bfb
AM
10345 case R_PPC64_GOT_TLSLD16_HI:
10346 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10347 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10348 {
951fd09b
AM
10349 tls_gdld_hi:
10350 if ((tls_mask & tls_gd) != 0)
10351 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10352 + R_PPC64_GOT_TPREL16_DS);
10353 else
411e1bfb 10354 {
951fd09b 10355 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10356 rel->r_offset -= d_offset;
951fd09b 10357 r_type = R_PPC64_NONE;
411e1bfb 10358 }
951fd09b 10359 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
10360 }
10361 break;
10362
951fd09b
AM
10363 case R_PPC64_GOT_TLSGD16:
10364 case R_PPC64_GOT_TLSGD16_LO:
10365 tls_gd = TLS_TPRELGD;
10366 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10367 goto tls_ldgd_opt;
951fd09b 10368 break;
411e1bfb 10369
951fd09b
AM
10370 case R_PPC64_GOT_TLSLD16:
10371 case R_PPC64_GOT_TLSLD16_LO:
10372 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10373 {
102890f0
AM
10374 bfd_vma insn1, insn2, insn3;
10375 bfd_vma offset;
10376
10377 tls_ldgd_opt:
10378 /* We know that the next reloc is on a tls_get_addr
10379 call, since ppc64_elf_tls_optimize checks this. */
10380 offset = rel[1].r_offset;
10381 insn1 = bfd_get_32 (output_bfd,
10382 contents + rel->r_offset - d_offset);
10383 insn3 = bfd_get_32 (output_bfd,
10384 contents + offset + 4);
10385 if ((tls_mask & tls_gd) != 0)
411e1bfb 10386 {
102890f0
AM
10387 /* IE */
10388 insn1 &= (1 << 26) - (1 << 2);
10389 insn1 |= 58 << 26; /* ld */
10390 insn2 = 0x7c636a14; /* add 3,3,13 */
10391 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
10392 R_PPC64_NONE);
10393 if ((tls_mask & TLS_EXPLICIT) == 0)
10394 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10395 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 10396 else
102890f0
AM
10397 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10398 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10399 }
10400 else
10401 {
10402 /* LE */
10403 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10404 insn2 = 0x38630000; /* addi 3,3,0 */
10405 if (tls_gd == 0)
951fd09b 10406 {
102890f0
AM
10407 /* Was an LD reloc. */
10408 r_symndx = 0;
10409 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
10410 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
951fd09b 10411 }
102890f0
AM
10412 else if (toc_symndx != 0)
10413 r_symndx = toc_symndx;
10414 r_type = R_PPC64_TPREL16_HA;
10415 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10416 rel[1].r_info = ELF64_R_INFO (r_symndx,
10417 R_PPC64_TPREL16_LO);
10418 rel[1].r_offset += d_offset;
10419 }
10420 if (insn3 == NOP
10421 || insn3 == CROR_151515 || insn3 == CROR_313131)
10422 {
10423 insn3 = insn2;
10424 insn2 = NOP;
10425 rel[1].r_offset += 4;
10426 }
10427 bfd_put_32 (output_bfd, insn1,
10428 contents + rel->r_offset - d_offset);
10429 bfd_put_32 (output_bfd, insn2, contents + offset);
10430 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10431 if (tls_gd == 0 || toc_symndx != 0)
10432 {
10433 /* We changed the symbol. Start over in order
10434 to get h, sym, sec etc. right. */
10435 rel--;
10436 continue;
411e1bfb 10437 }
411e1bfb 10438 }
411e1bfb
AM
10439 break;
10440
10441 case R_PPC64_DTPMOD64:
951fd09b
AM
10442 if (rel + 1 < relend
10443 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10444 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10445 {
951fd09b
AM
10446 if ((tls_mask & TLS_GD) == 0)
10447 {
10448 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10449 if ((tls_mask & TLS_TPRELGD) != 0)
10450 r_type = R_PPC64_TPREL64;
10451 else
10452 {
4ce794b7 10453 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM
10454 r_type = R_PPC64_NONE;
10455 }
10456 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10457 }
10458 }
10459 else
10460 {
10461 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10462 {
4ce794b7 10463 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10464 r_type = R_PPC64_NONE;
951fd09b 10465 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10466 }
411e1bfb
AM
10467 }
10468 break;
10469
10470 case R_PPC64_TPREL64:
951fd09b 10471 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM
10472 {
10473 r_type = R_PPC64_NONE;
10474 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10475 }
10476 break;
10477 }
10478
10479 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10480 insn = 0;
b25116a9
AM
10481 max_br_offset = 1 << 25;
10482 addend = rel->r_addend;
65f38f15 10483 switch (r_type)
5bd4f169
AM
10484 {
10485 default:
65f38f15 10486 break;
5bd4f169 10487
65f38f15
AM
10488 /* Branch taken prediction relocations. */
10489 case R_PPC64_ADDR14_BRTAKEN:
10490 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH
10491 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10492 /* Fall thru. */
65f38f15 10493
86c76c7b 10494 /* Branch not taken prediction relocations. */
65f38f15
AM
10495 case R_PPC64_ADDR14_BRNTAKEN:
10496 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM
10497 insn |= bfd_get_32 (output_bfd,
10498 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10499 /* Fall thru. */
86c76c7b 10500
b25116a9
AM
10501 case R_PPC64_REL14:
10502 max_br_offset = 1 << 15;
10503 /* Fall thru. */
5bd4f169 10504
65f38f15 10505 case R_PPC64_REL24:
ad8e1ba5
AM
10506 /* Calls to functions with a different TOC, such as calls to
10507 shared objects, need to alter the TOC pointer. This is
10508 done using a linkage stub. A REL24 branching to these
10509 linkage stubs needs to be followed by a nop, as the nop
10510 will be replaced with an instruction to restore the TOC
10511 base pointer. */
b25116a9 10512 stub_entry = NULL;
8387904d 10513 fdh = h;
ad8e1ba5 10514 if (((h != NULL
039b3fef
AM
10515 && (((fdh = h->oh) != NULL
10516 && fdh->elf.plt.plist != NULL)
10517 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10518 || (sec != NULL
ad8e1ba5 10519 && sec->output_section != NULL
b25116a9 10520 && sec->id <= htab->top_id
ad8e1ba5
AM
10521 && (htab->stub_group[sec->id].toc_off
10522 != htab->stub_group[input_section->id].toc_off)))
721956f4 10523 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM
10524 rel, htab)) != NULL
10525 && (stub_entry->stub_type == ppc_stub_plt_call
10526 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10527 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10528 {
b25116a9 10529 bfd_boolean can_plt_call = FALSE;
721956f4 10530
eea6121a 10531 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10532 {
b25116a9
AM
10533 unsigned long nop;
10534 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10535 if (nop == NOP
10536 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10537 {
4ce794b7 10538 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10539 contents + rel->r_offset + 4);
b25116a9 10540 can_plt_call = TRUE;
41bd81ab 10541 }
5bd4f169 10542 }
721956f4
AM
10543
10544 if (!can_plt_call)
10545 {
ad8e1ba5
AM
10546 if (stub_entry->stub_type == ppc_stub_plt_call)
10547 {
10548 /* If this is a plain branch rather than a branch
4fa1c237
AM
10549 and link, don't require a nop. However, don't
10550 allow tail calls in a shared library as they
10551 will result in r2 being corrupted. */
b25116a9
AM
10552 unsigned long br;
10553 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10554 if (info->executable && (br & 1) == 0)
b25116a9 10555 can_plt_call = TRUE;
15b552e9
AM
10556 else
10557 stub_entry = NULL;
ad8e1ba5 10558 }
6ab189d5 10559 else if (h != NULL
039b3fef 10560 && strcmp (h->elf.root.root.string,
6ab189d5
AM
10561 ".__libc_start_main") == 0)
10562 {
10563 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10564 can_plt_call = TRUE;
6ab189d5 10565 }
ad8e1ba5
AM
10566 else
10567 {
10568 if (strcmp (input_section->output_section->name,
10569 ".init") == 0
10570 || strcmp (input_section->output_section->name,
10571 ".fini") == 0)
10572 (*_bfd_error_handler)
d003868e 10573 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM
10574 "not supported using your crt files; "
10575 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM
10576 input_bfd,
10577 input_section,
ad8e1ba5
AM
10578 (long) rel->r_offset);
10579 else
10580 (*_bfd_error_handler)
d003868e 10581 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM
10582 "does not allow automatic multiple TOCs; "
10583 "recompile with -mminimal-toc or "
10584 "-fno-optimize-sibling-calls, "
10585 "or make `%s' extern"),
d003868e
AM
10586 input_bfd,
10587 input_section,
ad8e1ba5
AM
10588 (long) rel->r_offset,
10589 sym_name,
10590 sym_name);
10591 bfd_set_error (bfd_error_bad_value);
10592 ret = FALSE;
10593 }
721956f4
AM
10594 }
10595
b25116a9
AM
10596 if (can_plt_call
10597 && stub_entry->stub_type == ppc_stub_plt_call)
10598 unresolved_reloc = FALSE;
10599 }
10600
8387904d
AM
10601 if (stub_entry == NULL
10602 && get_opd_info (sec) != NULL)
10603 {
10604 /* The branch destination is the value of the opd entry. */
4cc603a5
AM
10605 bfd_vma off = (relocation + addend
10606 - sec->output_section->vma
10607 - sec->output_offset);
8387904d
AM
10608 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10609 if (dest != (bfd_vma) -1)
10610 {
10611 relocation = dest;
10612 addend = 0;
10613 }
10614 }
10615
b25116a9
AM
10616 /* If the branch is out of reach we ought to have a long
10617 branch stub. */
10618 from = (rel->r_offset
10619 + input_section->output_offset
10620 + input_section->output_section->vma);
10621
10622 if (stub_entry == NULL
4cc603a5 10623 && (relocation + addend - from + max_br_offset
b25116a9
AM
10624 >= 2 * max_br_offset)
10625 && r_type != R_PPC64_ADDR14_BRTAKEN
10626 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM
10627 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10628 htab);
b25116a9
AM
10629
10630 if (stub_entry != NULL)
10631 {
10632 /* Munge up the value and addend so that we call the stub
10633 rather than the procedure directly. */
10634 relocation = (stub_entry->stub_offset
10635 + stub_entry->stub_sec->output_offset
10636 + stub_entry->stub_sec->output_section->vma);
10637 addend = 0;
10638 }
10639
10640 if (insn != 0)
10641 {
10642 if (is_power4)
721956f4 10643 {
b25116a9
AM
10644 /* Set 'a' bit. This is 0b00010 in BO field for branch
10645 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10646 for branch on CTR insns (BO == 1a00t or 1a01t). */
10647 if ((insn & (0x14 << 21)) == (0x04 << 21))
10648 insn |= 0x02 << 21;
10649 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10650 insn |= 0x08 << 21;
10651 else
10652 break;
10653 }
10654 else
10655 {
10656 /* Invert 'y' bit if not the default. */
4cc603a5 10657 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10658 insn ^= 0x01 << 21;
721956f4 10659 }
b25116a9
AM
10660
10661 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10662 }
e86ce104 10663
06da1e8e
AM
10664 /* NOP out calls to undefined weak functions.
10665 We can thus call a weak function without first
10666 checking whether the function is defined. */
b25116a9 10667 else if (h != NULL
039b3fef 10668 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM
10669 && r_type == R_PPC64_REL24
10670 && relocation == 0
4cc603a5 10671 && addend == 0)
e86ce104 10672 {
06da1e8e
AM
10673 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10674 continue;
e86ce104 10675 }
65f38f15
AM
10676 break;
10677 }
5bd4f169 10678
65f38f15 10679 /* Set `addend'. */
411e1bfb 10680 tls_type = 0;
65f38f15
AM
10681 switch (r_type)
10682 {
10683 default:
10684 (*_bfd_error_handler)
d003868e
AM
10685 (_("%B: unknown relocation type %d for symbol %s"),
10686 input_bfd, (int) r_type, sym_name);
5bd4f169 10687
65f38f15 10688 bfd_set_error (bfd_error_bad_value);
b34976b6 10689 ret = FALSE;
65f38f15 10690 continue;
5bd4f169 10691
65f38f15 10692 case R_PPC64_NONE:
411e1bfb 10693 case R_PPC64_TLS:
04c9666a
AM
10694 case R_PPC64_GNU_VTINHERIT:
10695 case R_PPC64_GNU_VTENTRY:
65f38f15 10696 continue;
5bd4f169
AM
10697
10698 /* GOT16 relocations. Like an ADDR16 using the symbol's
10699 address in the GOT as relocation value instead of the
411e1bfb 10700 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10701 symbol and put the symbol value there. */
411e1bfb
AM
10702 case R_PPC64_GOT_TLSGD16:
10703 case R_PPC64_GOT_TLSGD16_LO:
10704 case R_PPC64_GOT_TLSGD16_HI:
10705 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10706 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
10707 goto dogot;
10708
10709 case R_PPC64_GOT_TLSLD16:
10710 case R_PPC64_GOT_TLSLD16_LO:
10711 case R_PPC64_GOT_TLSLD16_HI:
10712 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10713 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
10714 goto dogot;
10715
10716 case R_PPC64_GOT_TPREL16_DS:
10717 case R_PPC64_GOT_TPREL16_LO_DS:
10718 case R_PPC64_GOT_TPREL16_HI:
10719 case R_PPC64_GOT_TPREL16_HA:
10720 tls_type = TLS_TLS | TLS_TPREL;
10721 goto dogot;
10722
10723 case R_PPC64_GOT_DTPREL16_DS:
10724 case R_PPC64_GOT_DTPREL16_LO_DS:
10725 case R_PPC64_GOT_DTPREL16_HI:
10726 case R_PPC64_GOT_DTPREL16_HA:
10727 tls_type = TLS_TLS | TLS_DTPREL;
10728 goto dogot;
10729
65f38f15
AM
10730 case R_PPC64_GOT16:
10731 case R_PPC64_GOT16_LO:
10732 case R_PPC64_GOT16_HI:
10733 case R_PPC64_GOT16_HA:
10734 case R_PPC64_GOT16_DS:
10735 case R_PPC64_GOT16_LO_DS:
411e1bfb 10736 dogot:
5bd4f169
AM
10737 {
10738 /* Relocation is to the entry for this symbol in the global
10739 offset table. */
e717da7e 10740 asection *got;
d881513a 10741 bfd_vma *offp;
5bd4f169 10742 bfd_vma off;
d881513a 10743 unsigned long indx = 0;
65f38f15 10744
d881513a
AM
10745 if (tls_type == (TLS_TLS | TLS_LD)
10746 && (h == NULL
f5385ebf 10747 || !h->elf.def_dynamic))
e717da7e 10748 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10749 else
5bd4f169 10750 {
d881513a 10751 struct got_entry *ent;
5bd4f169 10752
d881513a
AM
10753 if (h != NULL)
10754 {
10755 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM
10756 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10757 &h->elf)
d881513a 10758 || (info->shared
039b3fef 10759 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM
10760 /* This is actually a static link, or it is a
10761 -Bsymbolic link and the symbol is defined
10762 locally, or the symbol was forced to be local
10763 because of a version file. */
10764 ;
10765 else
10766 {
039b3fef 10767 indx = h->elf.dynindx;
d881513a
AM
10768 unresolved_reloc = FALSE;
10769 }
039b3fef 10770 ent = h->elf.got.glist;
d881513a 10771 }
411e1bfb 10772 else
5bd4f169 10773 {
d881513a
AM
10774 if (local_got_ents == NULL)
10775 abort ();
10776 ent = local_got_ents[r_symndx];
5bd4f169 10777 }
d881513a
AM
10778
10779 for (; ent != NULL; ent = ent->next)
4cc603a5 10780 if (ent->addend == orig_addend
e717da7e 10781 && ent->owner == input_bfd
d881513a
AM
10782 && ent->tls_type == tls_type)
10783 break;
10784 if (ent == NULL)
10785 abort ();
10786 offp = &ent->got.offset;
5bd4f169 10787 }
411e1bfb 10788
e717da7e
AM
10789 got = ppc64_elf_tdata (input_bfd)->got;
10790 if (got == NULL)
10791 abort ();
10792
411e1bfb
AM
10793 /* The offset must always be a multiple of 8. We use the
10794 least significant bit to record whether we have already
10795 processed this entry. */
d881513a 10796 off = *offp;
411e1bfb
AM
10797 if ((off & 1) != 0)
10798 off &= ~1;
5bd4f169
AM
10799 else
10800 {
411e1bfb
AM
10801 /* Generate relocs for the dynamic linker, except in
10802 the case of TLSLD where we'll use one entry per
10803 module. */
e717da7e
AM
10804 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10805
d881513a 10806 *offp = off | 1;
4e795f50
AM
10807 if ((info->shared || indx != 0)
10808 && (h == NULL
039b3fef
AM
10809 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10810 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10811 {
e717da7e
AM
10812 outrel.r_offset = (got->output_section->vma
10813 + got->output_offset
411e1bfb 10814 + off);
4cc603a5 10815 outrel.r_addend = addend;
d881513a 10816 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10817 {
411e1bfb 10818 outrel.r_addend = 0;
e515b051 10819 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM
10820 if (tls_type == (TLS_TLS | TLS_GD))
10821 {
e717da7e
AM
10822 loc = relgot->contents;
10823 loc += (relgot->reloc_count++
d881513a
AM
10824 * sizeof (Elf64_External_Rela));
10825 bfd_elf64_swap_reloca_out (output_bfd,
10826 &outrel, loc);
e515b051 10827 outrel.r_offset += 8;
4cc603a5 10828 outrel.r_addend = addend;
d881513a
AM
10829 outrel.r_info
10830 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10831 }
411e1bfb 10832 }
951fd09b 10833 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10834 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10835 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM
10836 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
10837 else if (indx == 0)
81407a69
AM
10838 {
10839 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
10840
10841 /* Write the .got section contents for the sake
10842 of prelink. */
e717da7e 10843 loc = got->contents + off;
23fbd6fa
JJ
10844 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
10845 loc);
81407a69 10846 }
411e1bfb
AM
10847 else
10848 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM
10849
10850 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM
10851 {
10852 outrel.r_addend += relocation;
10853 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 10854 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 10855 }
e717da7e
AM
10856 loc = relgot->contents;
10857 loc += (relgot->reloc_count++
411e1bfb
AM
10858 * sizeof (Elf64_External_Rela));
10859 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
10860 }
10861
ad8e1ba5 10862 /* Init the .got section contents here if we're not
81407a69 10863 emitting a reloc. */
d881513a 10864 else
411e1bfb 10865 {
4cc603a5 10866 relocation += addend;
7b609f53
AM
10867 if (tls_type == (TLS_TLS | TLS_LD))
10868 relocation = 1;
10869 else if (tls_type != 0)
411e1bfb 10870 {
e1918d23 10871 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 10872 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 10873 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 10874
7b609f53
AM
10875 if (tls_type == (TLS_TLS | TLS_GD))
10876 {
10877 bfd_put_64 (output_bfd, relocation,
e717da7e 10878 got->contents + off + 8);
7b609f53
AM
10879 relocation = 1;
10880 }
411e1bfb 10881 }
7b609f53 10882
411e1bfb 10883 bfd_put_64 (output_bfd, relocation,
e717da7e 10884 got->contents + off);
5bd4f169
AM
10885 }
10886 }
10887
65f38f15
AM
10888 if (off >= (bfd_vma) -2)
10889 abort ();
10890
e717da7e 10891 relocation = got->output_offset + off;
65f38f15 10892
5bd4f169 10893 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 10894 addend = -TOC_BASE_OFF;
5bd4f169 10895 }
65f38f15
AM
10896 break;
10897
10898 case R_PPC64_PLT16_HA:
10899 case R_PPC64_PLT16_HI:
10900 case R_PPC64_PLT16_LO:
10901 case R_PPC64_PLT32:
10902 case R_PPC64_PLT64:
10903 /* Relocation is to the entry for this symbol in the
10904 procedure linkage table. */
10905
10906 /* Resolve a PLT reloc against a local symbol directly,
10907 without using the procedure linkage table. */
10908 if (h == NULL)
10909 break;
10910
411e1bfb
AM
10911 /* It's possible that we didn't make a PLT entry for this
10912 symbol. This happens when statically linking PIC code,
10913 or when using -Bsymbolic. Go find a match if there is a
10914 PLT entry. */
4ce794b7 10915 if (htab->plt != NULL)
65f38f15 10916 {
411e1bfb 10917 struct plt_entry *ent;
039b3fef 10918 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 10919 if (ent->addend == orig_addend
411e1bfb
AM
10920 && ent->plt.offset != (bfd_vma) -1)
10921 {
4ce794b7
AM
10922 relocation = (htab->plt->output_section->vma
10923 + htab->plt->output_offset
411e1bfb
AM
10924 + ent->plt.offset);
10925 unresolved_reloc = FALSE;
10926 }
65f38f15 10927 }
65f38f15 10928 break;
5bd4f169 10929
0b13192e
AM
10930 case R_PPC64_TOC:
10931 /* Relocation value is TOC base. */
10932 relocation = TOCstart;
10933 if (r_symndx == 0)
10934 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM
10935 else if (unresolved_reloc)
10936 ;
10937 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM
10938 relocation += htab->stub_group[sec->id].toc_off;
10939 else
10940 unresolved_reloc = TRUE;
ab96bf03 10941 goto dodyn;
0b13192e 10942
5bd4f169
AM
10943 /* TOC16 relocs. We want the offset relative to the TOC base,
10944 which is the address of the start of the TOC plus 0x8000.
10945 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10946 in this order. */
65f38f15
AM
10947 case R_PPC64_TOC16:
10948 case R_PPC64_TOC16_LO:
10949 case R_PPC64_TOC16_HI:
10950 case R_PPC64_TOC16_DS:
10951 case R_PPC64_TOC16_LO_DS:
10952 case R_PPC64_TOC16_HA:
ad8e1ba5 10953 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM
10954 break;
10955
10956 /* Relocate against the beginning of the section. */
65f38f15
AM
10957 case R_PPC64_SECTOFF:
10958 case R_PPC64_SECTOFF_LO:
10959 case R_PPC64_SECTOFF_HI:
10960 case R_PPC64_SECTOFF_DS:
10961 case R_PPC64_SECTOFF_LO_DS:
10962 case R_PPC64_SECTOFF_HA:
4ce794b7 10963 if (sec != NULL)
65f38f15 10964 addend -= sec->output_section->vma;
5bd4f169
AM
10965 break;
10966
721956f4
AM
10967 case R_PPC64_REL14:
10968 case R_PPC64_REL14_BRNTAKEN:
10969 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM
10970 case R_PPC64_REL24:
10971 break;
10972
411e1bfb
AM
10973 case R_PPC64_TPREL16:
10974 case R_PPC64_TPREL16_LO:
10975 case R_PPC64_TPREL16_HI:
10976 case R_PPC64_TPREL16_HA:
10977 case R_PPC64_TPREL16_DS:
10978 case R_PPC64_TPREL16_LO_DS:
10979 case R_PPC64_TPREL16_HIGHER:
10980 case R_PPC64_TPREL16_HIGHERA:
10981 case R_PPC64_TPREL16_HIGHEST:
10982 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 10983 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
10984 if (info->shared)
10985 /* The TPREL16 relocs shouldn't really be used in shared
10986 libs as they will result in DT_TEXTREL being set, but
10987 support them anyway. */
10988 goto dodyn;
10989 break;
10990
10991 case R_PPC64_DTPREL16:
10992 case R_PPC64_DTPREL16_LO:
10993 case R_PPC64_DTPREL16_HI:
10994 case R_PPC64_DTPREL16_HA:
10995 case R_PPC64_DTPREL16_DS:
10996 case R_PPC64_DTPREL16_LO_DS:
10997 case R_PPC64_DTPREL16_HIGHER:
10998 case R_PPC64_DTPREL16_HIGHERA:
10999 case R_PPC64_DTPREL16_HIGHEST:
11000 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 11001 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
11002 break;
11003
e515b051
AM
11004 case R_PPC64_DTPMOD64:
11005 relocation = 1;
11006 addend = 0;
11007 goto dodyn;
11008
411e1bfb 11009 case R_PPC64_TPREL64:
e1918d23 11010 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
11011 goto dodyn;
11012
11013 case R_PPC64_DTPREL64:
e1918d23 11014 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
11015 /* Fall thru */
11016
65f38f15
AM
11017 /* Relocations that may need to be propagated if this is a
11018 dynamic object. */
04c9666a 11019 case R_PPC64_REL30:
65f38f15
AM
11020 case R_PPC64_REL32:
11021 case R_PPC64_REL64:
11022 case R_PPC64_ADDR14:
11023 case R_PPC64_ADDR14_BRNTAKEN:
11024 case R_PPC64_ADDR14_BRTAKEN:
11025 case R_PPC64_ADDR16:
11026 case R_PPC64_ADDR16_DS:
11027 case R_PPC64_ADDR16_HA:
11028 case R_PPC64_ADDR16_HI:
11029 case R_PPC64_ADDR16_HIGHER:
11030 case R_PPC64_ADDR16_HIGHERA:
11031 case R_PPC64_ADDR16_HIGHEST:
11032 case R_PPC64_ADDR16_HIGHESTA:
11033 case R_PPC64_ADDR16_LO:
11034 case R_PPC64_ADDR16_LO_DS:
11035 case R_PPC64_ADDR24:
65f38f15
AM
11036 case R_PPC64_ADDR32:
11037 case R_PPC64_ADDR64:
11038 case R_PPC64_UADDR16:
11039 case R_PPC64_UADDR32:
11040 case R_PPC64_UADDR64:
411e1bfb 11041 dodyn:
5d1634d7 11042 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
11043 break;
11044
41bd81ab
AM
11045 if (NO_OPD_RELOCS && is_opd)
11046 break;
11047
65f38f15 11048 if ((info->shared
4e795f50 11049 && (h == NULL
039b3fef
AM
11050 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11051 || h->elf.root.type != bfd_link_hash_undefweak)
411e1bfb 11052 && (MUST_BE_DYN_RELOC (r_type)
039b3fef 11053 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM
11054 || (ELIMINATE_COPY_RELOCS
11055 && !info->shared
65f38f15 11056 && h != NULL
039b3fef 11057 && h->elf.dynindx != -1
f5385ebf
AM
11058 && !h->elf.non_got_ref
11059 && h->elf.def_dynamic
11060 && !h->elf.def_regular))
65f38f15
AM
11061 {
11062 Elf_Internal_Rela outrel;
b34976b6 11063 bfd_boolean skip, relocate;
65f38f15 11064 asection *sreloc;
947216bf 11065 bfd_byte *loc;
1cf1f670 11066 bfd_vma out_off;
65f38f15
AM
11067
11068 /* When generating a dynamic object, these relocations
11069 are copied into the output file to be resolved at run
11070 time. */
11071
b34976b6
AM
11072 skip = FALSE;
11073 relocate = FALSE;
65f38f15 11074
1cf1f670
AM
11075 out_off = _bfd_elf_section_offset (output_bfd, info,
11076 input_section, rel->r_offset);
11077 if (out_off == (bfd_vma) -1)
b34976b6 11078 skip = TRUE;
1cf1f670 11079 else if (out_off == (bfd_vma) -2)
b34976b6 11080 skip = TRUE, relocate = TRUE;
1cf1f670
AM
11081 out_off += (input_section->output_section->vma
11082 + input_section->output_offset);
11083 outrel.r_offset = out_off;
411e1bfb 11084 outrel.r_addend = rel->r_addend;
65f38f15 11085
1cf1f670
AM
11086 /* Optimize unaligned reloc use. */
11087 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
11088 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
11089 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
11090 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
11091 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
11092 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
11093 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
11094 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
11095 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
11096
65f38f15 11097 if (skip)
0bb2d96a 11098 memset (&outrel, 0, sizeof outrel);
039b3fef 11099 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM
11100 && !is_opd
11101 && r_type != R_PPC64_TOC)
039b3fef 11102 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM
11103 else
11104 {
41bd81ab
AM
11105 /* This symbol is local, or marked to become local,
11106 or this is an opd section reloc which must point
11107 at a local function. */
65f38f15 11108 outrel.r_addend += relocation;
e86ce104 11109 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 11110 {
3fad3c7c 11111 if (is_opd && h != NULL)
afbe61cf
AM
11112 {
11113 /* Lie about opd entries. This case occurs
11114 when building shared libraries and we
11115 reference a function in another shared
3fad3c7c
AM
11116 lib. The same thing happens for a weak
11117 definition in an application that's
11118 overridden by a strong definition in a
11119 shared lib. (I believe this is a generic
11120 bug in binutils handling of weak syms.)
11121 In these cases we won't use the opd
1e2f5b6e 11122 entry in this lib. */
b34976b6 11123 unresolved_reloc = FALSE;
afbe61cf 11124 }
65f38f15 11125 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM
11126
11127 /* We need to relocate .opd contents for ld.so.
11128 Prelink also wants simple and consistent rules
11129 for relocs. This make all RELATIVE relocs have
11130 *r_offset equal to r_addend. */
11131 relocate = TRUE;
65f38f15
AM
11132 }
11133 else
11134 {
11135 long indx = 0;
11136
41bd81ab 11137 if (bfd_is_abs_section (sec))
65f38f15
AM
11138 ;
11139 else if (sec == NULL || sec->owner == NULL)
11140 {
11141 bfd_set_error (bfd_error_bad_value);
b34976b6 11142 return FALSE;
65f38f15
AM
11143 }
11144 else
11145 {
11146 asection *osec;
11147
11148 osec = sec->output_section;
11149 indx = elf_section_data (osec)->dynindx;
11150
74541ad4
AM
11151 if (indx == 0)
11152 {
11153 if ((osec->flags & SEC_READONLY) == 0
11154 && htab->elf.data_index_section != NULL)
11155 osec = htab->elf.data_index_section;
11156 else
11157 osec = htab->elf.text_index_section;
11158 indx = elf_section_data (osec)->dynindx;
11159 }
11160 BFD_ASSERT (indx != 0);
11161
65f38f15
AM
11162 /* We are turning this relocation into one
11163 against a section symbol, so subtract out
11164 the output section's address but not the
11165 offset of the input section in the output
11166 section. */
11167 outrel.r_addend -= osec->vma;
11168 }
11169
11170 outrel.r_info = ELF64_R_INFO (indx, r_type);
11171 }
11172 }
11173
11174 sreloc = elf_section_data (input_section)->sreloc;
11175 if (sreloc == NULL)
11176 abort ();
11177
dfbb6ac9
AM
11178 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11179 >= sreloc->size)
11180 abort ();
947216bf
AM
11181 loc = sreloc->contents;
11182 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM
11183 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11184
11185 /* If this reloc is against an external symbol, it will
11186 be computed at runtime, so there's no need to do
81407a69
AM
11187 anything now. However, for the sake of prelink ensure
11188 that the section contents are a known value. */
65f38f15 11189 if (! relocate)
81407a69
AM
11190 {
11191 unresolved_reloc = FALSE;
11192 /* The value chosen here is quite arbitrary as ld.so
11193 ignores section contents except for the special
11194 case of .opd where the contents might be accessed
11195 before relocation. Choose zero, as that won't
11196 cause reloc overflow. */
11197 relocation = 0;
11198 addend = 0;
11199 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11200 to improve backward compatibility with older
11201 versions of ld. */
11202 if (r_type == R_PPC64_ADDR64)
11203 addend = outrel.r_addend;
11204 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11205 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM
11206 addend = (input_section->output_section->vma
11207 + input_section->output_offset
11208 + rel->r_offset);
81407a69 11209 }
65f38f15 11210 }
5bd4f169
AM
11211 break;
11212
65f38f15
AM
11213 case R_PPC64_COPY:
11214 case R_PPC64_GLOB_DAT:
11215 case R_PPC64_JMP_SLOT:
11216 case R_PPC64_RELATIVE:
11217 /* We shouldn't ever see these dynamic relocs in relocatable
11218 files. */
ae9a127f 11219 /* Fall through. */
65f38f15
AM
11220
11221 case R_PPC64_PLTGOT16:
11222 case R_PPC64_PLTGOT16_DS:
11223 case R_PPC64_PLTGOT16_HA:
11224 case R_PPC64_PLTGOT16_HI:
11225 case R_PPC64_PLTGOT16_LO:
11226 case R_PPC64_PLTGOT16_LO_DS:
11227 case R_PPC64_PLTREL32:
11228 case R_PPC64_PLTREL64:
11229 /* These ones haven't been implemented yet. */
11230
11231 (*_bfd_error_handler)
d003868e
AM
11232 (_("%B: relocation %s is not supported for symbol %s."),
11233 input_bfd,
4ce794b7 11234 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM
11235
11236 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11237 ret = FALSE;
5bd4f169 11238 continue;
65f38f15 11239 }
5bd4f169 11240
65f38f15
AM
11241 /* Do any further special processing. */
11242 switch (r_type)
11243 {
11244 default:
11245 break;
11246
11247 case R_PPC64_ADDR16_HA:
11248 case R_PPC64_ADDR16_HIGHERA:
11249 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM
11250 case R_PPC64_TOC16_HA:
11251 case R_PPC64_SECTOFF_HA:
411e1bfb
AM
11252 case R_PPC64_TPREL16_HA:
11253 case R_PPC64_DTPREL16_HA:
411e1bfb
AM
11254 case R_PPC64_TPREL16_HIGHER:
11255 case R_PPC64_TPREL16_HIGHERA:
11256 case R_PPC64_TPREL16_HIGHEST:
11257 case R_PPC64_TPREL16_HIGHESTA:
11258 case R_PPC64_DTPREL16_HIGHER:
11259 case R_PPC64_DTPREL16_HIGHERA:
11260 case R_PPC64_DTPREL16_HIGHEST:
11261 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM
11262 /* It's just possible that this symbol is a weak symbol
11263 that's not actually defined anywhere. In that case,
11264 'sec' would be NULL, and we should leave the symbol
11265 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
11266 if (sec == NULL)
11267 break;
11268 /* Fall thru */
11269
11270 case R_PPC64_GOT16_HA:
11271 case R_PPC64_PLTGOT16_HA:
11272 case R_PPC64_PLT16_HA:
11273 case R_PPC64_GOT_TLSGD16_HA:
11274 case R_PPC64_GOT_TLSLD16_HA:
11275 case R_PPC64_GOT_TPREL16_HA:
11276 case R_PPC64_GOT_DTPREL16_HA:
11277 /* Add 0x10000 if sign bit in 0:15 is set.
11278 Bits 0:15 are not used. */
11279 addend += 0x8000;
65f38f15
AM
11280 break;
11281
11282 case R_PPC64_ADDR16_DS:
11283 case R_PPC64_ADDR16_LO_DS:
11284 case R_PPC64_GOT16_DS:
11285 case R_PPC64_GOT16_LO_DS:
11286 case R_PPC64_PLT16_LO_DS:
11287 case R_PPC64_SECTOFF_DS:
11288 case R_PPC64_SECTOFF_LO_DS:
11289 case R_PPC64_TOC16_DS:
11290 case R_PPC64_TOC16_LO_DS:
11291 case R_PPC64_PLTGOT16_DS:
11292 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM
11293 case R_PPC64_GOT_TPREL16_DS:
11294 case R_PPC64_GOT_TPREL16_LO_DS:
11295 case R_PPC64_GOT_DTPREL16_DS:
11296 case R_PPC64_GOT_DTPREL16_LO_DS:
11297 case R_PPC64_TPREL16_DS:
11298 case R_PPC64_TPREL16_LO_DS:
11299 case R_PPC64_DTPREL16_DS:
11300 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM
11301 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11302 mask = 3;
11303 /* If this reloc is against an lq insn, then the value must be
11304 a multiple of 16. This is somewhat of a hack, but the
11305 "correct" way to do this by defining _DQ forms of all the
11306 _DS relocs bloats all reloc switches in this file. It
11307 doesn't seem to make much sense to use any of these relocs
11308 in data, so testing the insn should be safe. */
494dac0c 11309 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM
11310 mask = 15;
11311 if (((relocation + addend) & mask) != 0)
65f38f15
AM
11312 {
11313 (*_bfd_error_handler)
d003868e
AM
11314 (_("%B: error: relocation %s not a multiple of %d"),
11315 input_bfd,
4ce794b7 11316 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11317 mask + 1);
65f38f15 11318 bfd_set_error (bfd_error_bad_value);
b34976b6 11319 ret = FALSE;
65f38f15
AM
11320 continue;
11321 }
11322 break;
5bd4f169
AM
11323 }
11324
239e1f3a
AM
11325 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11326 because such sections are not SEC_ALLOC and thus ld.so will
11327 not process them. */
65f38f15 11328 if (unresolved_reloc
239e1f3a 11329 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11330 && h->elf.def_dynamic))
9c07fe7c
AM
11331 {
11332 (*_bfd_error_handler)
d003868e
AM
11333 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11334 input_bfd,
11335 input_section,
9c07fe7c 11336 (long) rel->r_offset,
7b609f53 11337 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11338 h->elf.root.root.string);
b34976b6 11339 ret = FALSE;
9c07fe7c 11340 }
5bd4f169 11341
65f38f15 11342 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM
11343 input_bfd,
11344 input_section,
11345 contents,
411e1bfb 11346 rel->r_offset,
5bd4f169
AM
11347 relocation,
11348 addend);
11349
ef60b7ff 11350 if (r != bfd_reloc_ok)
5bd4f169 11351 {
cd27b276
AM
11352 if (sym_name == NULL)
11353 sym_name = "(null)";
11354 if (r == bfd_reloc_overflow)
5bd4f169 11355 {
cd27b276
AM
11356 if (warned)
11357 continue;
11358 if (h != NULL
039b3fef 11359 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11360 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM
11361 {
11362 /* Assume this is a call protected by other code that
11363 detects the symbol is undefined. If this is the case,
11364 we can safely ignore the overflow. If not, the
11365 program is hosed anyway, and a little warning isn't
11366 going to help. */
11367
11368 continue;
11369 }
11370
ef60b7ff 11371 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
11372 (info, (h ? &h->elf.root : NULL), sym_name,
11373 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11374 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11375 return FALSE;
ef60b7ff
AM
11376 }
11377 else
11378 {
11379 (*_bfd_error_handler)
d003868e
AM
11380 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11381 input_bfd,
11382 input_section,
7b609f53 11383 (long) rel->r_offset,
4ce794b7 11384 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM
11385 sym_name,
11386 (int) r);
b34976b6 11387 ret = FALSE;
ef60b7ff 11388 }
5bd4f169 11389 }
5bd4f169
AM
11390 }
11391
645ea6a9
AM
11392 /* If we're emitting relocations, then shortly after this function
11393 returns, reloc offsets and addends for this section will be
11394 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM
11395 file rather than the input. Save a copy of the relocs for
11396 opd_entry_value. */
4cc603a5 11397 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM
11398 {
11399 bfd_size_type amt;
11400 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11401 rel = bfd_alloc (input_bfd, amt);
11402 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11403 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11404 if (rel == NULL)
11405 return FALSE;
11406 memcpy (rel, relocs, amt);
11407 }
5bd4f169
AM
11408 return ret;
11409}
11410
754021d0
AM
11411/* Adjust the value of any local symbols in opd sections. */
11412
11413static bfd_boolean
11414ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11415 const char *name ATTRIBUTE_UNUSED,
11416 Elf_Internal_Sym *elfsym,
11417 asection *input_sec,
11418 struct elf_link_hash_entry *h)
11419{
74f0fb50
AM
11420 struct _opd_sec_data *opd;
11421 long adjust;
754021d0
AM
11422 bfd_vma value;
11423
4025353c
AM
11424 if (h != NULL)
11425 return TRUE;
11426
74f0fb50
AM
11427 opd = get_opd_info (input_sec);
11428 if (opd == NULL || opd->adjust == NULL)
754021d0
AM
11429 return TRUE;
11430
11431 value = elfsym->st_value - input_sec->output_offset;
11432 if (!info->relocatable)
11433 value -= input_sec->output_section->vma;
11434
74f0fb50 11435 adjust = opd->adjust[value / 8];
4025353c
AM
11436 if (adjust == -1)
11437 elfsym->st_value = 0;
11438 else
11439 elfsym->st_value += adjust;
754021d0
AM
11440 return TRUE;
11441}
11442
5bd4f169
AM
11443/* Finish up dynamic symbol handling. We set the contents of various
11444 dynamic sections here. */
11445
b34976b6 11446static bfd_boolean
4ce794b7
AM
11447ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11448 struct bfd_link_info *info,
11449 struct elf_link_hash_entry *h,
11450 Elf_Internal_Sym *sym)
5bd4f169 11451{
65f38f15 11452 struct ppc_link_hash_table *htab;
8387904d
AM
11453 struct plt_entry *ent;
11454 Elf_Internal_Rela rela;
11455 bfd_byte *loc;
5bd4f169 11456
65f38f15 11457 htab = ppc_hash_table (info);
5bd4f169 11458
8387904d
AM
11459 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11460 if (ent->plt.offset != (bfd_vma) -1)
11461 {
11462 /* This symbol has an entry in the procedure linkage
11463 table. Set it up. */
11464
11465 if (htab->plt == NULL
11466 || htab->relplt == NULL
11467 || htab->glink == NULL)
11468 abort ();
11469
11470 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11471 fill in the PLT entry. */
11472 rela.r_offset = (htab->plt->output_section->vma
11473 + htab->plt->output_offset
11474 + ent->plt.offset);
11475 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11476 rela.r_addend = ent->addend;
11477
11478 loc = htab->relplt->contents;
11479 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11480 * sizeof (Elf64_External_Rela));
11481 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11482 }
5bd4f169 11483
f5385ebf 11484 if (h->needs_copy)
5bd4f169 11485 {
5bd4f169 11486 Elf_Internal_Rela rela;
947216bf 11487 bfd_byte *loc;
5bd4f169 11488
65f38f15 11489 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11490
65f38f15
AM
11491 if (h->dynindx == -1
11492 || (h->root.type != bfd_link_hash_defined
11493 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11494 || htab->relbss == NULL)
65f38f15 11495 abort ();
5bd4f169
AM
11496
11497 rela.r_offset = (h->root.u.def.value
11498 + h->root.u.def.section->output_section->vma
11499 + h->root.u.def.section->output_offset);
11500 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11501 rela.r_addend = 0;
4ce794b7
AM
11502 loc = htab->relbss->contents;
11503 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11504 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM
11505 }
11506
5bd4f169
AM
11507 /* Mark some specially defined symbols as absolute. */
11508 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11509 sym->st_shndx = SHN_ABS;
11510
b34976b6 11511 return TRUE;
5bd4f169
AM
11512}
11513
65f38f15
AM
11514/* Used to decide how to sort relocs in an optimal manner for the
11515 dynamic linker, before writing them out. */
11516
11517static enum elf_reloc_type_class
4ce794b7 11518ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11519{
04c9666a 11520 enum elf_ppc64_reloc_type r_type;
a33d1f77 11521
4ce794b7 11522 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11523 switch (r_type)
65f38f15
AM
11524 {
11525 case R_PPC64_RELATIVE:
11526 return reloc_class_relative;
11527 case R_PPC64_JMP_SLOT:
11528 return reloc_class_plt;
11529 case R_PPC64_COPY:
11530 return reloc_class_copy;
11531 default:
11532 return reloc_class_normal;
11533 }
11534}
11535
5bd4f169
AM
11536/* Finish up the dynamic sections. */
11537
b34976b6 11538static bfd_boolean
4ce794b7
AM
11539ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11540 struct bfd_link_info *info)
5bd4f169 11541{
65f38f15
AM
11542 struct ppc_link_hash_table *htab;
11543 bfd *dynobj;
5bd4f169 11544 asection *sdyn;
5bd4f169 11545
65f38f15
AM
11546 htab = ppc_hash_table (info);
11547 dynobj = htab->elf.dynobj;
5bd4f169
AM
11548 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11549
65f38f15 11550 if (htab->elf.dynamic_sections_created)
5bd4f169 11551 {
5bd4f169
AM
11552 Elf64_External_Dyn *dyncon, *dynconend;
11553
4ce794b7 11554 if (sdyn == NULL || htab->got == NULL)
65f38f15 11555 abort ();
5bd4f169
AM
11556
11557 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11558 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM
11559 for (; dyncon < dynconend; dyncon++)
11560 {
11561 Elf_Internal_Dyn dyn;
19397422 11562 asection *s;
5bd4f169
AM
11563
11564 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11565
11566 switch (dyn.d_tag)
11567 {
65f38f15
AM
11568 default:
11569 continue;
5bd4f169 11570
5d1634d7 11571 case DT_PPC64_GLINK:
4ce794b7 11572 s = htab->glink;
6348e046 11573 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM
11574 /* We stupidly defined DT_PPC64_GLINK to be the start
11575 of glink rather than the first entry point, which is
11576 what ld.so needs, and now have a bigger stub to
11577 support automatic multiple TOCs. */
11578 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM
11579 break;
11580
19397422
AM
11581 case DT_PPC64_OPD:
11582 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
11583 if (s == NULL)
11584 continue;
11585 dyn.d_un.d_ptr = s->vma;
19397422
AM
11586 break;
11587
11588 case DT_PPC64_OPDSZ:
11589 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
11590 if (s == NULL)
11591 continue;
eea6121a 11592 dyn.d_un.d_val = s->size;
19397422
AM
11593 break;
11594
65f38f15 11595 case DT_PLTGOT:
4ce794b7 11596 s = htab->plt;
6348e046 11597 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM
11598 break;
11599
11600 case DT_JMPREL:
4ce794b7 11601 s = htab->relplt;
6348e046 11602 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11603 break;
5bd4f169 11604
65f38f15 11605 case DT_PLTRELSZ:
eea6121a 11606 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM
11607 break;
11608
11609 case DT_RELASZ:
11610 /* Don't count procedure linkage table relocs in the
11611 overall reloc count. */
4ce794b7 11612 s = htab->relplt;
6348e046
AM
11613 if (s == NULL)
11614 continue;
eea6121a 11615 dyn.d_un.d_val -= s->size;
6348e046
AM
11616 break;
11617
11618 case DT_RELA:
11619 /* We may not be using the standard ELF linker script.
11620 If .rela.plt is the first .rela section, we adjust
11621 DT_RELA to not include it. */
4ce794b7 11622 s = htab->relplt;
6348e046
AM
11623 if (s == NULL)
11624 continue;
11625 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11626 continue;
eea6121a 11627 dyn.d_un.d_ptr += s->size;
65f38f15 11628 break;
5bd4f169 11629 }
5bd4f169 11630
65f38f15 11631 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11632 }
5bd4f169
AM
11633 }
11634
eea6121a 11635 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM
11636 {
11637 /* Fill in the first entry in the global offset table.
11638 We use it to hold the link-time TOCbase. */
11639 bfd_put_64 (output_bfd,
60ee0d4a 11640 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11641 htab->got->contents);
5d1634d7
AM
11642
11643 /* Set .got entry size. */
4ce794b7 11644 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM
11645 }
11646
eea6121a 11647 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM
11648 {
11649 /* Set .plt entry size. */
4ce794b7 11650 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM
11651 = PLT_ENTRY_SIZE;
11652 }
11653
84f5d08e
AM
11654 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11655 brlt ourselves if emitrelocations. */
11656 if (htab->brlt != NULL
11657 && htab->brlt->reloc_count != 0
11658 && !_bfd_elf_link_output_relocs (output_bfd,
11659 htab->brlt,
11660 &elf_section_data (htab->brlt)->rel_hdr,
11661 elf_section_data (htab->brlt)->relocs,
11662 NULL))
11663 return FALSE;
11664
176a0d42
AM
11665 if (htab->glink != NULL
11666 && htab->glink->reloc_count != 0
11667 && !_bfd_elf_link_output_relocs (output_bfd,
11668 htab->glink,
11669 &elf_section_data (htab->glink)->rel_hdr,
11670 elf_section_data (htab->glink)->relocs,
11671 NULL))
11672 return FALSE;
11673
e717da7e 11674 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM
11675 since we didn't add them to DYNOBJ. We know dynobj is the first
11676 bfd. */
e717da7e
AM
11677 while ((dynobj = dynobj->link_next) != NULL)
11678 {
11679 asection *s;
7b53ace3 11680
0c8d6e5c 11681 if (!is_ppc64_elf (dynobj))
7b53ace3
AM
11682 continue;
11683
e717da7e
AM
11684 s = ppc64_elf_tdata (dynobj)->got;
11685 if (s != NULL
eea6121a 11686 && s->size != 0
e717da7e
AM
11687 && s->output_section != bfd_abs_section_ptr
11688 && !bfd_set_section_contents (output_bfd, s->output_section,
11689 s->contents, s->output_offset,
eea6121a 11690 s->size))
e717da7e
AM
11691 return FALSE;
11692 s = ppc64_elf_tdata (dynobj)->relgot;
11693 if (s != NULL
eea6121a 11694 && s->size != 0
e717da7e
AM
11695 && s->output_section != bfd_abs_section_ptr
11696 && !bfd_set_section_contents (output_bfd, s->output_section,
11697 s->contents, s->output_offset,
eea6121a 11698 s->size))
e717da7e
AM
11699 return FALSE;
11700 }
f6c52c13 11701
b34976b6 11702 return TRUE;
5bd4f169
AM
11703}
11704
5bd4f169 11705#include "elf64-target.h"
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