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PR 6585
[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
AM		 4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
d37c89e5 6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
NC		 10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
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
AM		 20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
cd123cb7 24
4ce794b7
AM		 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
AM		 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
AM		 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
AM		 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
ad8e1ba5
AM		 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
AM		 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
AM		 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
AM		 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
AM		 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
468392fb
AM		 2774static bfd_boolean
2775section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2776{
2777 bfd_vma vma = *(bfd_vma *) ptr;
2778 return ((section->flags & SEC_ALLOC) != 0
2779 && section->vma <= vma
2780 && vma < section->vma + section->size);
2781}
2782
699733f6 2783/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 2784 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ		 2785
2786static long
a7535cf3
AM		 2787ppc64_elf_get_synthetic_symtab (bfd *abfd,
2788 long static_count, asymbol **static_syms,
2789 long dyn_count, asymbol **dyn_syms,
c9727e01 2790 asymbol **ret)
90e3cdf2
JJ		 2791{
2792 asymbol *s;
699733f6
AM		 2793 long i;
2794 long count;
90e3cdf2 2795 char *names;
a7535cf3 2796 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2797 asection *opd;
90e3cdf2 2798 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2799 asymbol **syms;
90e3cdf2
JJ		 2800
2801 *ret = NULL;
2802
2803 opd = bfd_get_section_by_name (abfd, ".opd");
2804 if (opd == NULL)
2805 return 0;
2806
a7535cf3 2807 symcount = static_count;
c9727e01 2808 if (!relocatable)
a7535cf3 2809 symcount += dyn_count;
90e3cdf2 2810 if (symcount == 0)
c9727e01 2811 return 0;
90e3cdf2 2812
a7535cf3
AM		 2813 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
2814 if (syms == NULL)
7356fed5 2815 return -1;
a7535cf3
AM		 2816
2817 if (!relocatable && static_count != 0 && dyn_count != 0)
2818 {
2819 /* Use both symbol tables. */
2820 memcpy (syms, static_syms, static_count * sizeof (*syms));
2821 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
2822 }
2823 else if (!relocatable && static_count == 0)
2824 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
2825 else
2826 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
2827
90e3cdf2
JJ		 2828 synthetic_opd = opd;
2829 synthetic_relocatable = relocatable;
595da8c5 2830 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 2831
c9727e01
AM		 2832 if (!relocatable && symcount > 1)
2833 {
2834 long j;
2835 /* Trim duplicate syms, since we may have merged the normal and
2836 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 2837 different values, so trim any with the same value. */
c9727e01
AM		 2838 for (i = 1, j = 1; i < symcount; ++i)
2839 if (syms[i - 1]->value + syms[i - 1]->section->vma
2840 != syms[i]->value + syms[i]->section->vma)
2841 syms[j++] = syms[i];
2842 symcount = j;
2843 }
2844
699733f6
AM		 2845 i = 0;
2846 if (syms[i]->section == opd)
2847 ++i;
2848 codesecsym = i;
90e3cdf2 2849
699733f6
AM		 2850 for (; i < symcount; ++i)
2851 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2852 != (SEC_CODE | SEC_ALLOC))
2853 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
2854 break;
2855 codesecsymend = i;
90e3cdf2 2856
699733f6
AM		 2857 for (; i < symcount; ++i)
2858 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
2859 break;
2860 secsymend = i;
90e3cdf2 2861
699733f6
AM		 2862 for (; i < symcount; ++i)
2863 if (syms[i]->section != opd)
2864 break;
2865 opdsymend = i;
90e3cdf2 2866
699733f6
AM		 2867 for (; i < symcount; ++i)
2868 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2870 break;
2871 symcount = i;
2872
c9727e01 2873 count = 0;
90e3cdf2 2874
699733f6 2875 if (relocatable)
90e3cdf2 2876 {
699733f6
AM		 2877 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2878 arelent *r;
2879 size_t size;
2880 long relcount;
90e3cdf2 2881
468392fb
AM		 2882 if (opdsymend == secsymend)
2883 goto done;
2884
699733f6 2885 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 2886 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 2887 if (relcount == 0)
c9727e01 2888 goto done;
90e3cdf2 2889
7356fed5
AM		 2890 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
2891 {
2892 count = -1;
2893 goto done;
2894 }
2895
699733f6 2896 size = 0;
595da8c5 2897 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 2898 {
2899 asymbol *sym;
90e3cdf2 2900
595da8c5 2901 while (r < opd->relocation + relcount
699733f6
AM		 2902 && r->address < syms[i]->value + opd->vma)
2903 ++r;
90e3cdf2 2904
595da8c5 2905 if (r == opd->relocation + relcount)
699733f6 2906 break;
90e3cdf2 2907
699733f6
AM		 2908 if (r->address != syms[i]->value + opd->vma)
2909 continue;
90e3cdf2 2910
699733f6
AM		 2911 if (r->howto->type != R_PPC64_ADDR64)
2912 continue;
90e3cdf2 2913
699733f6
AM		 2914 sym = *r->sym_ptr_ptr;
2915 if (!sym_exists_at (syms, opdsymend, symcount,
2916 sym->section->id, sym->value + r->addend))
2917 {
2918 ++count;
2919 size += sizeof (asymbol);
2920 size += strlen (syms[i]->name) + 2;
2921 }
2922 }
90e3cdf2 2923
699733f6
AM		 2924 s = *ret = bfd_malloc (size);
2925 if (s == NULL)
2926 {
7356fed5 2927 count = -1;
c9727e01 2928 goto done;
699733f6 2929 }
90e3cdf2 2930
699733f6 2931 names = (char *) (s + count);
90e3cdf2 2932
595da8c5 2933 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 2934 {
699733f6 2935 asymbol *sym;
90e3cdf2 2936
595da8c5 2937 while (r < opd->relocation + relcount
699733f6
AM		 2938 && r->address < syms[i]->value + opd->vma)
2939 ++r;
90e3cdf2 2940
595da8c5 2941 if (r == opd->relocation + relcount)
699733f6
AM		 2942 break;
2943
2944 if (r->address != syms[i]->value + opd->vma)
2945 continue;
2946
2947 if (r->howto->type != R_PPC64_ADDR64)
2948 continue;
90e3cdf2 2949
699733f6
AM		 2950 sym = *r->sym_ptr_ptr;
2951 if (!sym_exists_at (syms, opdsymend, symcount,
2952 sym->section->id, sym->value + r->addend))
2953 {
2954 size_t len;
2955
2956 *s = *syms[i];
2957 s->section = sym->section;
2958 s->value = sym->value + r->addend;
2959 s->name = names;
2960 *names++ = '.';
2961 len = strlen (syms[i]->name);
2962 memcpy (names, syms[i]->name, len + 1);
2963 names += len + 1;
6f610d07
UW		 2964 /* Have udata.p point back to the original symbol this
2965 synthetic symbol was derived from. */
2966 s->udata.p = syms[i];
699733f6
AM		 2967 s++;
2968 }
2969 }
2970 }
2971 else
90e3cdf2 2972 {
468392fb 2973 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
699733f6
AM		 2974 bfd_byte *contents;
2975 size_t size;
468392fb
AM		 2976 long plt_count = 0;
2977 bfd_vma glink_vma = 0, resolv_vma = 0;
2978 asection *dynamic, *glink = NULL, *relplt = NULL;
2979 arelent *p;
90e3cdf2 2980
699733f6
AM		 2981 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2982 {
2983 if (contents)
c9727e01
AM		 2984 {
2985 free_contents_and_exit:
2986 free (contents);
2987 }
7356fed5 2988 count = -1;
c9727e01 2989 goto done;
699733f6 2990 }
90e3cdf2 2991
699733f6
AM		 2992 size = 0;
2993 for (i = secsymend; i < opdsymend; ++i)
2994 {
2995 bfd_vma ent;
90e3cdf2 2996
699733f6
AM		 2997 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2998 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
2999 {
3000 ++count;
3001 size += sizeof (asymbol);
3002 size += strlen (syms[i]->name) + 2;
3003 }
3004 }
90e3cdf2 3005
468392fb
AM		 3006 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3007 dynamic = bfd_get_section_by_name (abfd, ".dynamic");
3008 if (dynamic != NULL)
3009 {
3010 bfd_byte *dynbuf, *extdyn, *extdynend;
3011 size_t extdynsize;
3012 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3013
3014 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3015 goto free_contents_and_exit;
3016
3017 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3018 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3019
3020 extdyn = dynbuf;
3021 extdynend = extdyn + dynamic->size;
3022 for (; extdyn < extdynend; extdyn += extdynsize)
3023 {
3024 Elf_Internal_Dyn dyn;
3025 (*swap_dyn_in) (abfd, extdyn, &dyn);
3026
3027 if (dyn.d_tag == DT_NULL)
3028 break;
3029
3030 if (dyn.d_tag == DT_PPC64_GLINK)
3031 {
3032 /* The first glink stub starts at offset 32; see comment in
3033 ppc64_elf_finish_dynamic_sections. */
3034 glink_vma = dyn.d_un.d_val + 32;
3035 /* The .glink section usually does not survive the final
3036 link; search for the section (usually .text) where the
3037 glink stubs now reside. */
3038 glink = bfd_sections_find_if (abfd, section_covers_vma,
3039 &glink_vma);
3040 break;
3041 }
3042 }
3043
3044 free (dynbuf);
3045 }
3046
3047 if (glink != NULL)
3048 {
3049 /* Determine __glink trampoline by reading the relative branch
3050 from the first glink stub. */
3051 bfd_byte buf[4];
3052 if (bfd_get_section_contents (abfd, glink, buf,
3053 glink_vma + 4 - glink->vma, 4))
3054 {
3055 unsigned int insn = bfd_get_32 (abfd, buf);
3056 insn ^= B_DOT;
3057 if ((insn & ~0x3fffffc) == 0)
3058 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3059 }
3060
3061 if (resolv_vma)
3062 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
3063 }
3064
3065 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3066 if (glink != NULL && relplt != NULL)
3067 {
3068 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3069 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3070 goto free_contents_and_exit;
3071
3072 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3073 size += plt_count * sizeof (asymbol);
3074
3075 p = relplt->relocation;
3076 for (i = 0; i < plt_count; i++, p++)
3077 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3078 }
3079
699733f6
AM		 3080 s = *ret = bfd_malloc (size);
3081 if (s == NULL)
7356fed5 3082 goto free_contents_and_exit;
90e3cdf2 3083
468392fb 3084 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3085
699733f6 3086 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3087 {
699733f6 3088 bfd_vma ent;
90e3cdf2 3089
699733f6
AM		 3090 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3091 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3092 {
c9727e01 3093 long lo, hi;
699733f6 3094 size_t len;
c9727e01 3095 asection *sec = abfd->sections;
90e3cdf2 3096
699733f6
AM		 3097 *s = *syms[i];
3098 lo = codesecsym;
3099 hi = codesecsymend;
3100 while (lo < hi)
3101 {
c9727e01 3102 long mid = (lo + hi) >> 1;
699733f6
AM		 3103 if (syms[mid]->section->vma < ent)
3104 lo = mid + 1;
3105 else if (syms[mid]->section->vma > ent)
3106 hi = mid;
3107 else
c9727e01
AM		 3108 {
3109 sec = syms[mid]->section;
3110 break;
3111 }
699733f6
AM		 3112 }
3113
c9727e01 3114 if (lo >= hi && lo > codesecsym)
699733f6 3115 sec = syms[lo - 1]->section;
699733f6
AM		 3116
3117 for (; sec != NULL; sec = sec->next)
3118 {
3119 if (sec->vma > ent)
3120 break;
3121 if ((sec->flags & SEC_ALLOC) == 0
3122 || (sec->flags & SEC_LOAD) == 0)
3123 break;
3124 if ((sec->flags & SEC_CODE) != 0)
3125 s->section = sec;
3126 }
3127 s->value = ent - s->section->vma;
3128 s->name = names;
3129 *names++ = '.';
3130 len = strlen (syms[i]->name);
3131 memcpy (names, syms[i]->name, len + 1);
3132 names += len + 1;
6f610d07
UW		 3133 /* Have udata.p point back to the original symbol this
3134 synthetic symbol was derived from. */
3135 s->udata.p = syms[i];
699733f6 3136 s++;
90e3cdf2 3137 }
90e3cdf2 3138 }
699733f6 3139 free (contents);
468392fb
AM		 3140
3141 if (glink != NULL && relplt != NULL)
3142 {
3143 if (resolv_vma)
3144 {
3145 /* Add a symbol for the main glink trampoline. */
86a4952b 3146 memset (s, 0, sizeof *s);
468392fb
AM		 3147 s->the_bfd = abfd;
3148 s->flags = BSF_GLOBAL;
3149 s->section = glink;
3150 s->value = resolv_vma - glink->vma;
3151 s->name = names;
3152 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3153 names += sizeof ("__glink_PLTresolve");
3154 s++;
3155 count++;
3156 }
3157
3158 /* FIXME: It would be very much nicer to put sym@plt on the
3159 stub rather than on the glink branch table entry. The
3160 objdump disassembler would then use a sensible symbol
3161 name on plt calls. The difficulty in doing so is
3162 a) finding the stubs, and,
3163 b) matching stubs against plt entries, and,
3164 c) there can be multiple stubs for a given plt entry.
3165
3166 Solving (a) could be done by code scanning, but older
3167 ppc64 binaries used different stubs to current code.
3168 (b) is the tricky one since you need to known the toc
3169 pointer for at least one function that uses a pic stub to
3170 be able to calculate the plt address referenced.
3171 (c) means gdb would need to set multiple breakpoints (or
3172 find the glink branch itself) when setting breakpoints
3173 for pending shared library loads. */
3174 p = relplt->relocation;
3175 for (i = 0; i < plt_count; i++, p++)
3176 {
3177 size_t len;
3178
3179 *s = **p->sym_ptr_ptr;
3180 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3181 we are defining a symbol, ensure one of them is set. */
3182 if ((s->flags & BSF_LOCAL) == 0)
3183 s->flags |= BSF_GLOBAL;
3184 s->section = glink;
3185 s->value = glink_vma - glink->vma;
3186 s->name = names;
3187 s->udata.p = NULL;
3188 len = strlen ((*p->sym_ptr_ptr)->name);
3189 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3190 names += len;
3191 memcpy (names, "@plt", sizeof ("@plt"));
3192 names += sizeof ("@plt");
3193 s++;
3194 glink_vma += 8;
3195 if (i >= 0x8000)
3196 glink_vma += 4;
3197 }
3198 count += plt_count;
3199 }
90e3cdf2
JJ		 3200 }
3201
c9727e01 3202 done:
a7535cf3 3203 free (syms);
90e3cdf2
JJ		 3204 return count;
3205}
5bd4f169 3206\f
65f38f15
AM		 3207/* The following functions are specific to the ELF linker, while
3208 functions above are used generally. Those named ppc64_elf_* are
3209 called by the main ELF linker code. They appear in this file more
3210 or less in the order in which they are called. eg.
3211 ppc64_elf_check_relocs is called early in the link process,
3212 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3213 called.
3214
3215 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3216 functions have both a function code symbol and a function descriptor
3217 symbol. A call to foo in a relocatable object file looks like:
3218
3219 . .text
3220 . x:
3221 . bl .foo
3222 . nop
3223
3224 The function definition in another object file might be:
3225
3226 . .section .opd
3227 . foo: .quad .foo
3228 . .quad .TOC.@tocbase
3229 . .quad 0
3230 .
3231 . .text
3232 . .foo: blr
3233
3234 When the linker resolves the call during a static link, the branch
3235 unsurprisingly just goes to .foo and the .opd information is unused.
3236 If the function definition is in a shared library, things are a little
3237 different: The call goes via a plt call stub, the opd information gets
3238 copied to the plt, and the linker patches the nop.
3239
3240 . x:
3241 . bl .foo_stub
3242 . ld 2,40(1)
3243 .
3244 .
3245 . .foo_stub:
3246 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3247 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3248 . std 2,40(1) # this is the general idea
3249 . ld 11,0(12)
3250 . ld 2,8(12)
3251 . mtctr 11
3252 . ld 11,16(12)
3253 . bctr
3254 .
3255 . .section .plt
3256 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3257
3258 The "reloc ()" notation is supposed to indicate that the linker emits
3259 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3260 copying.
3261
3262 What are the difficulties here? Well, firstly, the relocations
3263 examined by the linker in check_relocs are against the function code
3264 sym .foo, while the dynamic relocation in the plt is emitted against
3265 the function descriptor symbol, foo. Somewhere along the line, we need
3266 to carefully copy dynamic link information from one symbol to the other.
3267 Secondly, the generic part of the elf linker will make .foo a dynamic
3268 symbol as is normal for most other backends. We need foo dynamic
3269 instead, at least for an application final link. However, when
3270 creating a shared library containing foo, we need to have both symbols
3271 dynamic so that references to .foo are satisfied during the early
3272 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3273 definition from some other object, eg. a static library.
3274
3275 Update: As of August 2004, we support a new convention. Function
3276 calls may use the function descriptor symbol, ie. "bl foo". This
3277 behaves exactly as "bl .foo". */
65f38f15
AM		 3278
3279/* The linker needs to keep track of the number of relocs that it
3280 decides to copy as dynamic relocs in check_relocs for each symbol.
3281 This is so that it can later discard them if they are found to be
3282 unnecessary. We store the information in a field extending the
3283 regular ELF linker hash table. */
3284
3285struct ppc_dyn_relocs
3286{
3287 struct ppc_dyn_relocs *next;
3288
3289 /* The input section of the reloc. */
3290 asection *sec;
3291
3292 /* Total number of relocs copied for the input section. */
3293 bfd_size_type count;
3294
3295 /* Number of pc-relative relocs copied for the input section. */
3296 bfd_size_type pc_count;
3297};
3298
411e1bfb
AM		 3299/* Track GOT entries needed for a given symbol. We might need more
3300 than one got entry per symbol. */
3301struct got_entry
3302{
3303 struct got_entry *next;
3304
e7b938ca 3305 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3306 bfd_vma addend;
3307
e717da7e
AM		 3308 /* Unlike other ELF targets, we use separate GOT entries for the same
3309 symbol referenced from different input files. This is to support
3310 automatic multiple TOC/GOT sections, where the TOC base can vary
102890f0
AM		 3311 from one input file to another. FIXME: After group_sections we
3312 ought to merge entries within the group.
e717da7e
AM		 3313
3314 Point to the BFD owning this GOT entry. */
3315 bfd *owner;
3316
3317 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3318 TLS_TPREL or TLS_DTPREL for tls entries. */
3319 char tls_type;
3320
e7b938ca 3321 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3322 union
3323 {
3324 bfd_signed_vma refcount;
3325 bfd_vma offset;
3326 } got;
411e1bfb
AM		 3327};
3328
3329/* The same for PLT. */
3330struct plt_entry
3331{
3332 struct plt_entry *next;
3333
3334 bfd_vma addend;
3335
3336 union
3337 {
3338 bfd_signed_vma refcount;
3339 bfd_vma offset;
3340 } plt;
3341};
3342
1d483afe 3343/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3344 selects those that must be copied when linking a shared library,
3345 even when the symbol is local. */
65f38f15 3346
1d483afe
AM		 3347static int
3348must_be_dyn_reloc (struct bfd_link_info *info,
3349 enum elf_ppc64_reloc_type r_type)
3350{
3351 switch (r_type)
3352 {
3353 default:
3354 return 1;
3355
3356 case R_PPC64_REL32:
3357 case R_PPC64_REL64:
3358 case R_PPC64_REL30:
3359 return 0;
3360
3361 case R_PPC64_TPREL16:
3362 case R_PPC64_TPREL16_LO:
3363 case R_PPC64_TPREL16_HI:
3364 case R_PPC64_TPREL16_HA:
3365 case R_PPC64_TPREL16_DS:
3366 case R_PPC64_TPREL16_LO_DS:
3367 case R_PPC64_TPREL16_HIGHER:
3368 case R_PPC64_TPREL16_HIGHERA:
3369 case R_PPC64_TPREL16_HIGHEST:
3370 case R_PPC64_TPREL16_HIGHESTA:
3371 case R_PPC64_TPREL64:
3372 return !info->executable;
3373 }
3374}
65f38f15 3375
f4656909
AM		 3376/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3377 copying dynamic variables from a shared lib into an app's dynbss
3378 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3379 shared lib. With code that gcc generates, it's vital that this be
3380 enabled; In the PowerPC64 ABI, the address of a function is actually
3381 the address of a function descriptor, which resides in the .opd
3382 section. gcc uses the descriptor directly rather than going via the
3383 GOT as some other ABI's do, which means that initialized function
3384 pointers must reference the descriptor. Thus, a function pointer
3385 initialized to the address of a function in a shared library will
3386 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3387 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3388 presents a problem as a plt entry for that function is also
3389 initialized from the function descriptor symbol and the copy reloc
3390 may not be initialized first. */
a23b6845 3391#define ELIMINATE_COPY_RELOCS 1
f4656909 3392
721956f4
AM		 3393/* Section name for stubs is the associated section name plus this
3394 string. */
3395#define STUB_SUFFIX ".stub"
3396
3397/* Linker stubs.
3398 ppc_stub_long_branch:
3399 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3400 destination, but a 24 bit branch in a stub section will reach.
3401 . b dest
3402
3403 ppc_stub_plt_branch:
3404 Similar to the above, but a 24 bit branch in the stub section won't
3405 reach its destination.
87e226ce
AM		 3406 . addis %r12,%r2,xxx@toc@ha
3407 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3408 . mtctr %r11
3409 . bctr
3410
3411 ppc_stub_plt_call:
2c66dc6c
AM		 3412 Used to call a function in a shared library. If it so happens that
3413 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3414 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3415 . addis %r12,%r2,xxx@toc@ha
721956f4 3416 . std %r2,40(%r1)
87e226ce 3417 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3418 . mtctr %r11
ac2df442 3419 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3420 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3421 . bctr
ad8e1ba5
AM		 3422
3423 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3424 code to adjust the value and save r2 to support multiple toc sections.
3425 A ppc_stub_long_branch with an r2 offset looks like:
3426 . std %r2,40(%r1)
3427 . addis %r2,%r2,off@ha
3428 . addi %r2,%r2,off@l
3429 . b dest
3430
3431 A ppc_stub_plt_branch with an r2 offset looks like:
3432 . std %r2,40(%r1)
3433 . addis %r12,%r2,xxx@toc@ha
3434 . ld %r11,xxx@toc@l(%r12)
3435 . addis %r2,%r2,off@ha
3436 . addi %r2,%r2,off@l
3437 . mtctr %r11
3438 . bctr
ac2df442
AM		 3439
3440 In cases where the "addis" instruction would add zero, the "addis" is
3441 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3442*/
3443
3444enum ppc_stub_type {
3445 ppc_stub_none,
3446 ppc_stub_long_branch,
ad8e1ba5 3447 ppc_stub_long_branch_r2off,
721956f4 3448 ppc_stub_plt_branch,
ad8e1ba5 3449 ppc_stub_plt_branch_r2off,
721956f4
AM		 3450 ppc_stub_plt_call
3451};
3452
3453struct ppc_stub_hash_entry {
3454
3455 /* Base hash table entry structure. */
3456 struct bfd_hash_entry root;
3457
ad8e1ba5
AM		 3458 enum ppc_stub_type stub_type;
3459
721956f4
AM		 3460 /* The stub section. */
3461 asection *stub_sec;
3462
3463 /* Offset within stub_sec of the beginning of this stub. */
3464 bfd_vma stub_offset;
3465
3466 /* Given the symbol's value and its section we can determine its final
3467 value when building the stubs (so the stub knows where to jump. */
3468 bfd_vma target_value;
3469 asection *target_section;
3470
721956f4
AM		 3471 /* The symbol table entry, if any, that this was derived from. */
3472 struct ppc_link_hash_entry *h;
3473
411e1bfb
AM		 3474 /* And the reloc addend that this was derived from. */
3475 bfd_vma addend;
3476
721956f4
AM		 3477 /* Where this stub is being called from, or, in the case of combined
3478 stub sections, the first input section in the group. */
3479 asection *id_sec;
3480};
3481
3482struct ppc_branch_hash_entry {
3483
3484 /* Base hash table entry structure. */
3485 struct bfd_hash_entry root;
3486
c456f082 3487 /* Offset within branch lookup table. */
721956f4
AM		 3488 unsigned int offset;
3489
3490 /* Generation marker. */
3491 unsigned int iter;
3492};
65f38f15
AM		 3493
3494struct ppc_link_hash_entry
3495{
3496 struct elf_link_hash_entry elf;
3497
b3fac117
AM		 3498 union {
3499 /* A pointer to the most recently used stub hash entry against this
3500 symbol. */
3501 struct ppc_stub_hash_entry *stub_cache;
3502
3503 /* A pointer to the next symbol starting with a '.' */
3504 struct ppc_link_hash_entry *next_dot_sym;
3505 } u;
721956f4 3506
65f38f15
AM		 3507 /* Track dynamic relocs copied for this symbol. */
3508 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3509
721956f4 3510 /* Link between function code and descriptor symbols. */
34814b9f 3511 struct ppc_link_hash_entry *oh;
721956f4 3512
e86ce104
AM		 3513 /* Flag function code and descriptor symbols. */
3514 unsigned int is_func:1;
3515 unsigned int is_func_descriptor:1;
908b32fc 3516 unsigned int fake:1;
411e1bfb 3517
c5614fa4
AM		 3518 /* Whether global opd/toc sym has been adjusted or not.
3519 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3520 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3521 unsigned int adjust_done:1;
3522
99877b66
AM		 3523 /* Set if we twiddled this symbol to weak at some stage. */
3524 unsigned int was_undefined:1;
3525
411e1bfb 3526 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3527 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3528 corresponding relocs are encountered during check_relocs.
3529 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3530 indicate the corresponding GOT entry type is not needed.
3531 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3532 a TPREL one. We use a separate flag rather than setting TPREL
3533 just for convenience in distinguishing the two cases. */
3534#define TLS_GD 1 /* GD reloc. */
3535#define TLS_LD 2 /* LD reloc. */
3536#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3537#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3538#define TLS_TLS 16 /* Any TLS reloc. */
3539#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3540#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3541 char tls_mask;
65f38f15
AM		 3542};
3543
3544/* ppc64 ELF linker hash table. */
3545
3546struct ppc_link_hash_table
3547{
3548 struct elf_link_hash_table elf;
3549
721956f4
AM		 3550 /* The stub hash table. */
3551 struct bfd_hash_table stub_hash_table;
3552
3553 /* Another hash table for plt_branch stubs. */
3554 struct bfd_hash_table branch_hash_table;
3555
3556 /* Linker stub bfd. */
3557 bfd *stub_bfd;
3558
3559 /* Linker call-backs. */
4ce794b7
AM		 3560 asection * (*add_stub_section) (const char *, asection *);
3561 void (*layout_sections_again) (void);
721956f4
AM		 3562
3563 /* Array to keep track of which stub sections have been created, and
3564 information on stub grouping. */
3565 struct map_stub {
3566 /* This is the section to which stubs in the group will be attached. */
3567 asection *link_sec;
3568 /* The stub section. */
3569 asection *stub_sec;
ad8e1ba5
AM		 3570 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3571 bfd_vma toc_off;
721956f4
AM		 3572 } *stub_group;
3573
ad8e1ba5
AM		 3574 /* Temp used when calculating TOC pointers. */
3575 bfd_vma toc_curr;
3576
8f3bab57
AM		 3577 /* Highest input section id. */
3578 int top_id;
3579
734b6cf9
AM		 3580 /* Highest output section index. */
3581 int top_index;
3582
b3fac117
AM		 3583 /* Used when adding symbols. */
3584 struct ppc_link_hash_entry *dot_syms;
3585
734b6cf9
AM		 3586 /* List of input sections for each output section. */
3587 asection **input_list;
721956f4 3588
65f38f15 3589 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3590 asection *got;
4ce794b7
AM		 3591 asection *plt;
3592 asection *relplt;
3593 asection *dynbss;
3594 asection *relbss;
3595 asection *glink;
82bd7b59 3596 asection *sfpr;
4ce794b7
AM		 3597 asection *brlt;
3598 asection *relbrlt;
ec338859 3599
8387904d
AM		 3600 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3601 struct ppc_link_hash_entry *tls_get_addr;
3602 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3603
9b5ecbd0
AM		 3604 /* Statistics. */
3605 unsigned long stub_count[ppc_stub_plt_call];
3606
ee75fd95
AM		 3607 /* Number of stubs against global syms. */
3608 unsigned long stub_globals;
3609
ad8e1ba5 3610 /* Set if we should emit symbols for stubs. */
99877b66 3611 unsigned int emit_stub_syms:1;
ad8e1ba5 3612
4c52953f
AM		 3613 /* Support for multiple toc sections. */
3614 unsigned int no_multi_toc:1;
3615 unsigned int multi_toc_needed:1;
3616
5d1634d7 3617 /* Set on error. */
99877b66 3618 unsigned int stub_error:1;
721956f4 3619
99877b66
AM		 3620 /* Temp used by ppc64_elf_check_directives. */
3621 unsigned int twiddled_syms:1;
721956f4
AM		 3622
3623 /* Incremented every time we size stubs. */
3624 unsigned int stub_iteration;
5d1634d7 3625
ec338859
AM		 3626 /* Small local sym to section mapping cache. */
3627 struct sym_sec_cache sym_sec;
65f38f15
AM		 3628};
3629
4c52953f
AM		 3630/* Rename some of the generic section flags to better document how they
3631 are used here. */
3632#define has_toc_reloc has_gp_reloc
3633#define makes_toc_func_call need_finalize_relax
3634#define call_check_in_progress reloc_done
3635
65f38f15
AM		 3636/* Get the ppc64 ELF linker hash table from a link_info structure. */
3637
3638#define ppc_hash_table(p) \
3639 ((struct ppc_link_hash_table *) ((p)->hash))
3640
721956f4
AM		 3641#define ppc_stub_hash_lookup(table, string, create, copy) \
3642 ((struct ppc_stub_hash_entry *) \
3643 bfd_hash_lookup ((table), (string), (create), (copy)))
3644
3645#define ppc_branch_hash_lookup(table, string, create, copy) \
3646 ((struct ppc_branch_hash_entry *) \
3647 bfd_hash_lookup ((table), (string), (create), (copy)))
3648
3649/* Create an entry in the stub hash table. */
3650
3651static struct bfd_hash_entry *
4ce794b7
AM		 3652stub_hash_newfunc (struct bfd_hash_entry *entry,
3653 struct bfd_hash_table *table,
3654 const char *string)
721956f4
AM		 3655{
3656 /* Allocate the structure if it has not already been allocated by a
3657 subclass. */
3658 if (entry == NULL)
3659 {
3660 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3661 if (entry == NULL)
3662 return entry;
3663 }
3664
3665 /* Call the allocation method of the superclass. */
3666 entry = bfd_hash_newfunc (entry, table, string);
3667 if (entry != NULL)
3668 {
3669 struct ppc_stub_hash_entry *eh;
3670
3671 /* Initialize the local fields. */
3672 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3673 eh->stub_type = ppc_stub_none;
721956f4
AM		 3674 eh->stub_sec = NULL;
3675 eh->stub_offset = 0;
3676 eh->target_value = 0;
3677 eh->target_section = NULL;
721956f4
AM		 3678 eh->h = NULL;
3679 eh->id_sec = NULL;
3680 }
3681
3682 return entry;
3683}
3684
3685/* Create an entry in the branch hash table. */
3686
3687static struct bfd_hash_entry *
4ce794b7
AM		 3688branch_hash_newfunc (struct bfd_hash_entry *entry,
3689 struct bfd_hash_table *table,
3690 const char *string)
721956f4
AM		 3691{
3692 /* Allocate the structure if it has not already been allocated by a
3693 subclass. */
3694 if (entry == NULL)
3695 {
3696 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3697 if (entry == NULL)
3698 return entry;
3699 }
3700
3701 /* Call the allocation method of the superclass. */
3702 entry = bfd_hash_newfunc (entry, table, string);
3703 if (entry != NULL)
3704 {
3705 struct ppc_branch_hash_entry *eh;
3706
3707 /* Initialize the local fields. */
3708 eh = (struct ppc_branch_hash_entry *) entry;
3709 eh->offset = 0;
3710 eh->iter = 0;
3711 }
3712
3713 return entry;
3714}
3715
65f38f15
AM		 3716/* Create an entry in a ppc64 ELF linker hash table. */
3717
3718static struct bfd_hash_entry *
4ce794b7
AM		 3719link_hash_newfunc (struct bfd_hash_entry *entry,
3720 struct bfd_hash_table *table,
3721 const char *string)
65f38f15
AM		 3722{
3723 /* Allocate the structure if it has not already been allocated by a
3724 subclass. */
3725 if (entry == NULL)
3726 {
3727 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3728 if (entry == NULL)
3729 return entry;
3730 }
3731
3732 /* Call the allocation method of the superclass. */
3733 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3734 if (entry != NULL)
3735 {
3736 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3737
b3fac117 3738 memset (&eh->u.stub_cache, 0,
908b32fc 3739 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 3740 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3741
3742 /* When making function calls, old ABI code references function entry
3743 points (dot symbols), while new ABI code references the function
3744 descriptor symbol. We need to make any combination of reference and
3745 definition work together, without breaking archive linking.
3746
3747 For a defined function "foo" and an undefined call to "bar":
3748 An old object defines "foo" and ".foo", references ".bar" (possibly
3749 "bar" too).
3750 A new object defines "foo" and references "bar".
3751
3752 A new object thus has no problem with its undefined symbols being
3753 satisfied by definitions in an old object. On the other hand, the
3754 old object won't have ".bar" satisfied by a new object.
3755
3756 Keep a list of newly added dot-symbols. */
3757
3758 if (string[0] == '.')
3759 {
3760 struct ppc_link_hash_table *htab;
3761
3762 htab = (struct ppc_link_hash_table *) table;
3763 eh->u.next_dot_sym = htab->dot_syms;
3764 htab->dot_syms = eh;
3765 }
65f38f15
AM		 3766 }
3767
3768 return entry;
3769}
3770
3771/* Create a ppc64 ELF linker hash table. */
3772
3773static struct bfd_link_hash_table *
4ce794b7 3774ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3775{
3776 struct ppc_link_hash_table *htab;
3777 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3778
4ce794b7 3779 htab = bfd_zmalloc (amt);
65f38f15
AM		 3780 if (htab == NULL)
3781 return NULL;
3782
66eb6687
AM		 3783 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3784 sizeof (struct ppc_link_hash_entry)))
65f38f15 3785 {
e2d34d7d 3786 free (htab);
65f38f15
AM		 3787 return NULL;
3788 }
3789
721956f4 3790 /* Init the stub hash table too. */
66eb6687
AM		 3791 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3792 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM		 3793 return NULL;
3794
3795 /* And the branch hash table. */
66eb6687
AM		 3796 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3797 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM		 3798 return NULL;
3799
3254fd24
AM		 3800 /* Initializing two fields of the union is just cosmetic. We really
3801 only care about glist, but when compiled on a 32-bit host the
3802 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3803 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3804 htab->elf.init_got_refcount.refcount = 0;
3805 htab->elf.init_got_refcount.glist = NULL;
3806 htab->elf.init_plt_refcount.refcount = 0;
3807 htab->elf.init_plt_refcount.glist = NULL;
3808 htab->elf.init_got_offset.offset = 0;
3809 htab->elf.init_got_offset.glist = NULL;
3810 htab->elf.init_plt_offset.offset = 0;
3811 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3812
65f38f15
AM		 3813 return &htab->elf.root;
3814}
3815
721956f4
AM		 3816/* Free the derived linker hash table. */
3817
3818static void
4ce794b7 3819ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3820{
3821 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3822
3823 bfd_hash_table_free (&ret->stub_hash_table);
3824 bfd_hash_table_free (&ret->branch_hash_table);
3825 _bfd_generic_link_hash_table_free (hash);
3826}
3827
e717da7e
AM		 3828/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3829
3830void
3831ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3832{
3833 struct ppc_link_hash_table *htab;
3834
3835 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3836
3837/* Always hook our dynamic sections into the first bfd, which is the
3838 linker created stub bfd. This ensures that the GOT header is at
3839 the start of the output TOC section. */
3840 htab = ppc_hash_table (info);
3841 htab->stub_bfd = abfd;
3842 htab->elf.dynobj = abfd;
3843}
3844
721956f4
AM		 3845/* Build a name for an entry in the stub hash table. */
3846
3847static char *
4ce794b7
AM		 3848ppc_stub_name (const asection *input_section,
3849 const asection *sym_sec,
3850 const struct ppc_link_hash_entry *h,
3851 const Elf_Internal_Rela *rel)
721956f4
AM		 3852{
3853 char *stub_name;
3854 bfd_size_type len;
3855
3856 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3857 offsets from a sym as a branch target? In fact, we could
3858 probably assume the addend is always zero. */
3859 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3860
3861 if (h)
3862 {
3863 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3864 stub_name = bfd_malloc (len);
46de2a7c
AM		 3865 if (stub_name == NULL)
3866 return stub_name;
3867
3868 sprintf (stub_name, "%08x.%s+%x",
3869 input_section->id & 0xffffffff,
3870 h->elf.root.root.string,
3871 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3872 }
3873 else
3874 {
ad8e1ba5 3875 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3876 stub_name = bfd_malloc (len);
46de2a7c
AM		 3877 if (stub_name == NULL)
3878 return stub_name;
3879
3880 sprintf (stub_name, "%08x.%x:%x+%x",
3881 input_section->id & 0xffffffff,
3882 sym_sec->id & 0xffffffff,
3883 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3884 (int) rel->r_addend & 0xffffffff);
721956f4 3885 }
ee75fd95
AM		 3886 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3887 stub_name[len - 2] = 0;
721956f4
AM		 3888 return stub_name;
3889}
3890
3891/* Look up an entry in the stub hash. Stub entries are cached because
3892 creating the stub name takes a bit of time. */
3893
3894static struct ppc_stub_hash_entry *
4ce794b7
AM		 3895ppc_get_stub_entry (const asection *input_section,
3896 const asection *sym_sec,
039b3fef 3897 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3898 const Elf_Internal_Rela *rel,
3899 struct ppc_link_hash_table *htab)
721956f4
AM		 3900{
3901 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3902 const asection *id_sec;
3903
3904 /* If this input section is part of a group of sections sharing one
3905 stub section, then use the id of the first section in the group.
3906 Stub names need to include a section id, as there may well be
3907 more than one stub used to reach say, printf, and we need to
3908 distinguish between them. */
3909 id_sec = htab->stub_group[input_section->id].link_sec;
3910
b3fac117
AM		 3911 if (h != NULL && h->u.stub_cache != NULL
3912 && h->u.stub_cache->h == h
3913 && h->u.stub_cache->id_sec == id_sec)
721956f4 3914 {
b3fac117 3915 stub_entry = h->u.stub_cache;
721956f4
AM		 3916 }
3917 else
3918 {
3919 char *stub_name;
3920
3921 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3922 if (stub_name == NULL)
3923 return NULL;
3924
3925 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3926 stub_name, FALSE, FALSE);
721956f4 3927 if (h != NULL)
b3fac117 3928 h->u.stub_cache = stub_entry;
721956f4
AM		 3929
3930 free (stub_name);
3931 }
3932
3933 return stub_entry;
3934}
3935
3936/* Add a new stub entry to the stub hash. Not all fields of the new
3937 stub entry are initialised. */
3938
3939static struct ppc_stub_hash_entry *
4ce794b7
AM		 3940ppc_add_stub (const char *stub_name,
3941 asection *section,
3942 struct ppc_link_hash_table *htab)
721956f4
AM		 3943{
3944 asection *link_sec;
3945 asection *stub_sec;
3946 struct ppc_stub_hash_entry *stub_entry;
3947
3948 link_sec = htab->stub_group[section->id].link_sec;
3949 stub_sec = htab->stub_group[section->id].stub_sec;
3950 if (stub_sec == NULL)
3951 {
3952 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3953 if (stub_sec == NULL)
3954 {
d4c88bbb 3955 size_t namelen;
721956f4
AM		 3956 bfd_size_type len;
3957 char *s_name;
3958
d4c88bbb
AM		 3959 namelen = strlen (link_sec->name);
3960 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3961 s_name = bfd_alloc (htab->stub_bfd, len);
3962 if (s_name == NULL)
3963 return NULL;
3964
d4c88bbb
AM		 3965 memcpy (s_name, link_sec->name, namelen);
3966 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3967 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3968 if (stub_sec == NULL)
3969 return NULL;
3970 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3971 }
3972 htab->stub_group[section->id].stub_sec = stub_sec;
3973 }
3974
3975 /* Enter this entry into the linker stub hash table. */
3976 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3977 TRUE, FALSE);
721956f4
AM		 3978 if (stub_entry == NULL)
3979 {
d003868e
AM		 3980 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3981 section->owner, stub_name);
721956f4
AM		 3982 return NULL;
3983 }
3984
3985 stub_entry->stub_sec = stub_sec;
3986 stub_entry->stub_offset = 0;
3987 stub_entry->id_sec = link_sec;
3988 return stub_entry;
3989}
3990
82bd7b59
AM		 3991/* Create sections for linker generated code. */
3992
b34976b6 3993static bfd_boolean
4ce794b7 3994create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3995{
3996 struct ppc_link_hash_table *htab;
3997 flagword flags;
3998
3999 htab = ppc_hash_table (info);
4000
4001 /* Create .sfpr for code to save and restore fp regs. */
4002 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4003 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 4004 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4005 flags);
82bd7b59 4006 if (htab->sfpr == NULL
82bd7b59 4007 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 4008 return FALSE;
82bd7b59 4009
721956f4 4010 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 4011 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4012 flags);
4ce794b7 4013 if (htab->glink == NULL
ee4bf8d2 4014 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 4015 return FALSE;
82bd7b59 4016
c456f082 4017 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM		 4018 flags = (SEC_ALLOC | SEC_LOAD
4019 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4020 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4021 flags);
4ce794b7 4022 if (htab->brlt == NULL
4ce794b7 4023 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 4024 return FALSE;
721956f4 4025
e4e0193e 4026 if (!info->shared)
c456f082
AM		 4027 return TRUE;
4028
e4e0193e
AM		 4029 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4030 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4031 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4032 ".rela.branch_lt",
4033 flags);
c456f082
AM		 4034 if (!htab->relbrlt
4035 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4036 return FALSE;
4037
b34976b6 4038 return TRUE;
82bd7b59
AM		 4039}
4040
e717da7e
AM		 4041/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4042 not already done. */
65f38f15 4043
b34976b6 4044static bfd_boolean
e717da7e 4045create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4046{
e717da7e
AM		 4047 asection *got, *relgot;
4048 flagword flags;
4049 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4050
0c8d6e5c 4051 if (!is_ppc64_elf (abfd))
0ffa91dd
NC		 4052 return FALSE;
4053
4ce794b7 4054 if (!htab->got)
e717da7e
AM		 4055 {
4056 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4057 return FALSE;
4058
4059 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4060 if (!htab->got)
4061 abort ();
4062 }
4063
4064 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4065 | SEC_LINKER_CREATED);
4066
c456f082 4067 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4068 if (!got
e717da7e
AM		 4069 || !bfd_set_section_alignment (abfd, got, 3))
4070 return FALSE;
65f38f15 4071
c456f082
AM		 4072 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4073 flags | SEC_READONLY);
e717da7e 4074 if (!relgot
e717da7e 4075 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4076 return FALSE;
e717da7e
AM		 4077
4078 ppc64_elf_tdata (abfd)->got = got;
4079 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4080 return TRUE;
65f38f15 4081}
5bd4f169 4082
82bd7b59 4083/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4084
b34976b6 4085static bfd_boolean
4ce794b7 4086ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4087{
65f38f15 4088 struct ppc_link_hash_table *htab;
5bd4f169 4089
65f38f15 4090 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4091 return FALSE;
65f38f15 4092
e717da7e
AM		 4093 htab = ppc_hash_table (info);
4094 if (!htab->got)
4095 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 4096 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4097 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4098 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 4099 if (!info->shared)
4ce794b7 4100 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 4101
e717da7e 4102 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 4103 || (!info->shared && !htab->relbss))
65f38f15
AM		 4104 abort ();
4105
b34976b6 4106 return TRUE;
5bd4f169
AM		 4107}
4108
40d16e0b
AM		 4109/* Merge PLT info on FROM with that on TO. */
4110
4111static void
4112move_plt_plist (struct ppc_link_hash_entry *from,
4113 struct ppc_link_hash_entry *to)
4114{
4115 if (from->elf.plt.plist != NULL)
4116 {
4117 if (to->elf.plt.plist != NULL)
4118 {
4119 struct plt_entry **entp;
4120 struct plt_entry *ent;
4121
4122 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4123 {
4124 struct plt_entry *dent;
4125
4126 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4127 if (dent->addend == ent->addend)
4128 {
4129 dent->plt.refcount += ent->plt.refcount;
4130 *entp = ent->next;
4131 break;
4132 }
4133 if (dent == NULL)
4134 entp = &ent->next;
4135 }
4136 *entp = to->elf.plt.plist;
4137 }
4138
4139 to->elf.plt.plist = from->elf.plt.plist;
4140 from->elf.plt.plist = NULL;
4141 }
4142}
4143
65f38f15
AM		 4144/* Copy the extra info we tack onto an elf_link_hash_entry. */
4145
4146static void
fcfa13d2
AM		 4147ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4148 struct elf_link_hash_entry *dir,
4149 struct elf_link_hash_entry *ind)
65f38f15
AM		 4150{
4151 struct ppc_link_hash_entry *edir, *eind;
4152
4153 edir = (struct ppc_link_hash_entry *) dir;
4154 eind = (struct ppc_link_hash_entry *) ind;
4155
411e1bfb 4156 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4157 if (eind->dyn_relocs != NULL)
65f38f15 4158 {
bbd7ec4a
AM		 4159 if (edir->dyn_relocs != NULL)
4160 {
4161 struct ppc_dyn_relocs **pp;
4162 struct ppc_dyn_relocs *p;
4163
fcfa13d2 4164 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4165 list. Merge any entries against the same section. */
4166 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4167 {
4168 struct ppc_dyn_relocs *q;
4169
4170 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4171 if (q->sec == p->sec)
4172 {
4173 q->pc_count += p->pc_count;
4174 q->count += p->count;
4175 *pp = p->next;
4176 break;
4177 }
4178 if (q == NULL)
4179 pp = &p->next;
4180 }
4181 *pp = edir->dyn_relocs;
4182 }
4183
65f38f15
AM		 4184 edir->dyn_relocs = eind->dyn_relocs;
4185 eind->dyn_relocs = NULL;
4186 }
65f38f15 4187
6349e628
AM		 4188 edir->is_func |= eind->is_func;
4189 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4190 edir->tls_mask |= eind->tls_mask;
6349e628 4191
81848ca0 4192 /* If called to transfer flags for a weakdef during processing
f5385ebf 4193 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4194 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 4195 if (!(ELIMINATE_COPY_RELOCS
4196 && eind->elf.root.type != bfd_link_hash_indirect
4197 && edir->elf.dynamic_adjusted))
4198 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4199
f5385ebf
AM		 4200 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4201 edir->elf.ref_regular |= eind->elf.ref_regular;
4202 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4203 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 4204
4205 /* If we were called to copy over info for a weak sym, that's all. */
4206 if (eind->elf.root.type != bfd_link_hash_indirect)
4207 return;
4208
81848ca0
AM		 4209 /* Copy over got entries that we may have already seen to the
4210 symbol which just became indirect. */
411e1bfb
AM		 4211 if (eind->elf.got.glist != NULL)
4212 {
4213 if (edir->elf.got.glist != NULL)
4214 {
4215 struct got_entry **entp;
4216 struct got_entry *ent;
4217
4218 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4219 {
4220 struct got_entry *dent;
4221
4222 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4223 if (dent->addend == ent->addend
e717da7e 4224 && dent->owner == ent->owner
411e1bfb
AM		 4225 && dent->tls_type == ent->tls_type)
4226 {
4227 dent->got.refcount += ent->got.refcount;
4228 *entp = ent->next;
4229 break;
4230 }
4231 if (dent == NULL)
4232 entp = &ent->next;
4233 }
4234 *entp = edir->elf.got.glist;
4235 }
4236
4237 edir->elf.got.glist = eind->elf.got.glist;
4238 eind->elf.got.glist = NULL;
4239 }
4240
4241 /* And plt entries. */
40d16e0b 4242 move_plt_plist (eind, edir);
411e1bfb 4243
fcfa13d2 4244 if (eind->elf.dynindx != -1)
411e1bfb 4245 {
fcfa13d2
AM		 4246 if (edir->elf.dynindx != -1)
4247 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4248 edir->elf.dynstr_index);
411e1bfb
AM		 4249 edir->elf.dynindx = eind->elf.dynindx;
4250 edir->elf.dynstr_index = eind->elf.dynstr_index;
4251 eind->elf.dynindx = -1;
4252 eind->elf.dynstr_index = 0;
4253 }
411e1bfb
AM		 4254}
4255
8387904d
AM		 4256/* Find the function descriptor hash entry from the given function code
4257 hash entry FH. Link the entries via their OH fields. */
4258
4259static struct ppc_link_hash_entry *
4260get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4261{
4262 struct ppc_link_hash_entry *fdh = fh->oh;
4263
4264 if (fdh == NULL)
4265 {
4266 const char *fd_name = fh->elf.root.root.string + 1;
4267
4268 fdh = (struct ppc_link_hash_entry *)
4269 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4270 if (fdh != NULL)
4271 {
4272 fdh->is_func_descriptor = 1;
4273 fdh->oh = fh;
4274 fh->is_func = 1;
4275 fh->oh = fdh;
4276 }
4277 }
4278
4279 return fdh;
4280}
4281
bb700d78
AM		 4282/* Make a fake function descriptor sym for the code sym FH. */
4283
4284static struct ppc_link_hash_entry *
4285make_fdh (struct bfd_link_info *info,
908b32fc 4286 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4287{
4288 bfd *abfd;
4289 asymbol *newsym;
4290 struct bfd_link_hash_entry *bh;
4291 struct ppc_link_hash_entry *fdh;
4292
4293 abfd = fh->elf.root.u.undef.abfd;
4294 newsym = bfd_make_empty_symbol (abfd);
4295 newsym->name = fh->elf.root.root.string + 1;
4296 newsym->section = bfd_und_section_ptr;
4297 newsym->value = 0;
908b32fc 4298 newsym->flags = BSF_WEAK;
bb700d78
AM		 4299
4300 bh = NULL;
4301 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4302 newsym->flags, newsym->section,
4303 newsym->value, NULL, FALSE, FALSE,
4304 &bh))
4305 return NULL;
4306
4307 fdh = (struct ppc_link_hash_entry *) bh;
4308 fdh->elf.non_elf = 0;
908b32fc
AM		 4309 fdh->fake = 1;
4310 fdh->is_func_descriptor = 1;
4311 fdh->oh = fh;
4312 fh->is_func = 1;
4313 fh->oh = fdh;
bb700d78
AM		 4314 return fdh;
4315}
4316
8387904d
AM		 4317/* Fix function descriptor symbols defined in .opd sections to be
4318 function type. */
555cd476
AM		 4319
4320static bfd_boolean
b3fac117 4321ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM		 4322 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4323 Elf_Internal_Sym *isym,
b3fac117 4324 const char **name ATTRIBUTE_UNUSED,
555cd476
AM		 4325 flagword *flags ATTRIBUTE_UNUSED,
4326 asection **sec,
4327 bfd_vma *value ATTRIBUTE_UNUSED)
4328{
8843416a
AM		 4329 if (*sec != NULL
4330 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4331 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4332
555cd476
AM		 4333 return TRUE;
4334}
4335
8387904d 4336/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4337 inclusion of a new ABI object archive that defines "bar".
4338 NAME is a symbol defined in an archive. Return a symbol in the hash
4339 table that might be satisfied by the archive symbols. */
8387904d
AM		 4340
4341static struct elf_link_hash_entry *
4342ppc64_elf_archive_symbol_lookup (bfd *abfd,
4343 struct bfd_link_info *info,
4344 const char *name)
4345{
4346 struct elf_link_hash_entry *h;
4347 char *dot_name;
4348 size_t len;
4349
4350 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4351 if (h != NULL
4352 /* Don't return this sym if it is a fake function descriptor
4353 created by add_symbol_adjust. */
4354 && !(h->root.type == bfd_link_hash_undefweak
4355 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4356 return h;
4357
4358 if (name[0] == '.')
4359 return h;
4360
4361 len = strlen (name);
4362 dot_name = bfd_alloc (abfd, len + 2);
4363 if (dot_name == NULL)
4364 return (struct elf_link_hash_entry *) 0 - 1;
4365 dot_name[0] = '.';
4366 memcpy (dot_name + 1, name, len + 1);
4367 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4368 bfd_release (abfd, dot_name);
4369 return h;
4370}
4371
4372/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4373 new ABI object defines "bar". Well, at least, undefined dot symbols
4374 are made weak. This stops later archive searches from including an
4375 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4376 prevents the linker complaining about undefined symbols.
4377 We also check and correct mismatched symbol visibility here. The
4378 most restrictive visibility of the function descriptor and the
4379 function entry symbol is used. */
8387904d
AM		 4380
4381static bfd_boolean
b3fac117 4382add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4383{
8387904d
AM		 4384 struct ppc_link_hash_table *htab;
4385 struct ppc_link_hash_entry *fdh;
4386
b3fac117 4387 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4388 return TRUE;
4389
b3fac117
AM		 4390 if (eh->elf.root.type == bfd_link_hash_warning)
4391 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4392
b3fac117
AM		 4393 if (eh->elf.root.root.string[0] != '.')
4394 abort ();
8387904d 4395
b3fac117 4396 htab = ppc_hash_table (info);
99877b66 4397 fdh = get_fdh (eh, htab);
bb700d78 4398 if (fdh == NULL
b3fac117 4399 && !info->relocatable
bb700d78
AM		 4400 && (eh->elf.root.type == bfd_link_hash_undefined
4401 || eh->elf.root.type == bfd_link_hash_undefweak)
4402 && eh->elf.ref_regular)
4403 {
4404 /* Make an undefweak function descriptor sym, which is enough to
4405 pull in an --as-needed shared lib, but won't cause link
4406 errors. Archives are handled elsewhere. */
b3fac117 4407 fdh = make_fdh (info, eh);
bb700d78 4408 if (fdh == NULL)
b3fac117 4409 return FALSE;
bb700d78
AM		 4410 else
4411 fdh->elf.ref_regular = 1;
4412 }
e87d886e 4413 else if (fdh != NULL)
8387904d 4414 {
35b0ce59
AM		 4415 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4416 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4417 if (entry_vis < descr_vis)
4418 fdh->elf.other += entry_vis - descr_vis;
4419 else if (entry_vis > descr_vis)
4420 eh->elf.other += descr_vis - entry_vis;
4421
e87d886e
AM		 4422 if ((fdh->elf.root.type == bfd_link_hash_defined
4423 || fdh->elf.root.type == bfd_link_hash_defweak)
4424 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4425 {
4426 eh->elf.root.type = bfd_link_hash_undefweak;
4427 eh->was_undefined = 1;
4428 htab->twiddled_syms = 1;
4429 }
8387904d 4430 }
99877b66 4431
8387904d
AM		 4432 return TRUE;
4433}
4434
b3fac117
AM		 4435/* Process list of dot-symbols we made in link_hash_newfunc. */
4436
8387904d 4437static bfd_boolean
b3fac117 4438ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info)
8387904d 4439{
99877b66 4440 struct ppc_link_hash_table *htab;
b3fac117 4441 struct ppc_link_hash_entry **p, *eh;
433817dd 4442
99877b66 4443 htab = ppc_hash_table (info);
0c8d6e5c 4444 if (!is_ppc64_elf (info->output_bfd))
35b0ce59
AM		 4445 return TRUE;
4446
0c8d6e5c 4447 if (is_ppc64_elf (ibfd))
b3fac117
AM		 4448 {
4449 p = &htab->dot_syms;
4450 while ((eh = *p) != NULL)
4451 {
4452 *p = NULL;
4453 if (!add_symbol_adjust (eh, info))
4454 return FALSE;
4455 p = &eh->u.next_dot_sym;
4456 }
4457 }
4458
4459 /* Clear the list for non-ppc64 input files. */
4460 p = &htab->dot_syms;
4461 while ((eh = *p) != NULL)
4462 {
4463 *p = NULL;
4464 p = &eh->u.next_dot_sym;
4465 }
99877b66
AM		 4466
4467 /* We need to fix the undefs list for any syms we have twiddled to
4468 undef_weak. */
4469 if (htab->twiddled_syms)
4470 {
77cfaee6 4471 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4472 htab->twiddled_syms = 0;
4473 }
b3fac117 4474 return TRUE;
8387904d
AM		 4475}
4476
97fed1c9
JJ		 4477/* Undo hash table changes when an --as-needed input file is determined
4478 not to be needed. */
4479
4480static bfd_boolean
4481ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4482 struct bfd_link_info *info)
4483{
4484 ppc_hash_table (info)->dot_syms = NULL;
4485 return TRUE;
4486}
4487
411e1bfb 4488static bfd_boolean
4ce794b7
AM		 4489update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4490 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4491{
4492 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4493 char *local_got_tls_masks;
411e1bfb
AM		 4494
4495 if (local_got_ents == NULL)
4496 {
4497 bfd_size_type size = symtab_hdr->sh_info;
4498
e7b938ca 4499 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4500 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4501 if (local_got_ents == NULL)
4502 return FALSE;
4503 elf_local_got_ents (abfd) = local_got_ents;
4504 }
4505
4506 if ((tls_type & TLS_EXPLICIT) == 0)
4507 {
4508 struct got_entry *ent;
4509
4510 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4511 if (ent->addend == r_addend
4512 && ent->owner == abfd
4513 && ent->tls_type == tls_type)
411e1bfb
AM		 4514 break;
4515 if (ent == NULL)
4516 {
4517 bfd_size_type amt = sizeof (*ent);
4ce794b7 4518 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4519 if (ent == NULL)
4520 return FALSE;
4521 ent->next = local_got_ents[r_symndx];
4522 ent->addend = r_addend;
e717da7e 4523 ent->owner = abfd;
411e1bfb
AM		 4524 ent->tls_type = tls_type;
4525 ent->got.refcount = 0;
4526 local_got_ents[r_symndx] = ent;
4527 }
4528 ent->got.refcount += 1;
4529 }
4530
e7b938ca
AM		 4531 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4532 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4533 return TRUE;
65f38f15
AM		 4534}
4535
411e1bfb 4536static bfd_boolean
4ce794b7 4537update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4538{
411e1bfb 4539 struct plt_entry *ent;
1e2f5b6e 4540
411e1bfb
AM		 4541 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4542 if (ent->addend == addend)
4543 break;
4544 if (ent == NULL)
1e2f5b6e 4545 {
411e1bfb 4546 bfd_size_type amt = sizeof (*ent);
4ce794b7 4547 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4548 if (ent == NULL)
4549 return FALSE;
4550 ent->next = eh->elf.plt.plist;
4551 ent->addend = addend;
4552 ent->plt.refcount = 0;
4553 eh->elf.plt.plist = ent;
1e2f5b6e 4554 }
411e1bfb 4555 ent->plt.refcount += 1;
f5385ebf 4556 eh->elf.needs_plt = 1;
93f3fa99
AM		 4557 if (eh->elf.root.root.string[0] == '.'
4558 && eh->elf.root.root.string[1] != '\0')
4559 eh->is_func = 1;
b34976b6 4560 return TRUE;
1e2f5b6e
AM		 4561}
4562
5bd4f169 4563/* Look through the relocs for a section during the first phase, and
65f38f15 4564 calculate needed space in the global offset table, procedure
5d1634d7 4565 linkage table, and dynamic reloc sections. */
5bd4f169 4566
b34976b6 4567static bfd_boolean
4ce794b7
AM		 4568ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4569 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4570{
65f38f15 4571 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4572 Elf_Internal_Shdr *symtab_hdr;
4573 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4574 const Elf_Internal_Rela *rel;
4575 const Elf_Internal_Rela *rel_end;
5bd4f169 4576 asection *sreloc;
1e2f5b6e 4577 asection **opd_sym_map;
5bd4f169 4578
1049f94e 4579 if (info->relocatable)
b34976b6 4580 return TRUE;
5bd4f169 4581
680a3378
AM		 4582 /* Don't do anything special with non-loaded, non-alloced sections.
4583 In particular, any relocs in such sections should not affect GOT
4584 and PLT reference counting (ie. we don't allow them to create GOT
4585 or PLT entries), there's no possibility or desire to optimize TLS
4586 relocs, and there's not much point in propagating relocs to shared
4587 libs that the dynamic linker won't relocate. */
4588 if ((sec->flags & SEC_ALLOC) == 0)
4589 return TRUE;
4590
0c8d6e5c 4591 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4592
65f38f15 4593 htab = ppc_hash_table (info);
0ffa91dd 4594 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169
AM		 4595
4596 sym_hashes = elf_sym_hashes (abfd);
4597 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4598 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4599 - symtab_hdr->sh_info);
5bd4f169
AM		 4600
4601 sreloc = NULL;
1e2f5b6e
AM		 4602 opd_sym_map = NULL;
4603 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4604 {
4605 /* Garbage collection needs some extra help with .opd sections.
4606 We don't want to necessarily keep everything referenced by
4607 relocs in .opd, as that would keep all functions. Instead,
4608 if we reference an .opd symbol (a function descriptor), we
4609 want to keep the function code symbol's section. This is
4610 easy for global symbols, but for local syms we need to keep
74f0fb50 4611 information about the associated function section. */
1e2f5b6e
AM		 4612 bfd_size_type amt;
4613
74f0fb50 4614 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4615 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4616 if (opd_sym_map == NULL)
b34976b6 4617 return FALSE;
74f0fb50 4618 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM		 4619 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4620 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4621 }
5bd4f169 4622
82bd7b59
AM		 4623 if (htab->sfpr == NULL
4624 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4625 return FALSE;
82bd7b59 4626
5bd4f169
AM		 4627 rel_end = relocs + sec->reloc_count;
4628 for (rel = relocs; rel < rel_end; rel++)
4629 {
4630 unsigned long r_symndx;
4631 struct elf_link_hash_entry *h;
04c9666a 4632 enum elf_ppc64_reloc_type r_type;
411e1bfb 4633 int tls_type = 0;
7c8fe5c4 4634 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM		 4635
4636 r_symndx = ELF64_R_SYM (rel->r_info);
4637 if (r_symndx < symtab_hdr->sh_info)
4638 h = NULL;
4639 else
973a3492
L		 4640 {
4641 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4642 while (h->root.type == bfd_link_hash_indirect
4643 || h->root.type == bfd_link_hash_warning)
4644 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4645 }
5bd4f169 4646
4ce794b7 4647 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4648 switch (r_type)
5bd4f169 4649 {
411e1bfb
AM		 4650 case R_PPC64_GOT_TLSLD16:
4651 case R_PPC64_GOT_TLSLD16_LO:
4652 case R_PPC64_GOT_TLSLD16_HI:
4653 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 4654 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4655 goto dogottls;
4656
4657 case R_PPC64_GOT_TLSGD16:
4658 case R_PPC64_GOT_TLSGD16_LO:
4659 case R_PPC64_GOT_TLSGD16_HI:
4660 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4661 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4662 goto dogottls;
4663
4664 case R_PPC64_GOT_TPREL16_DS:
4665 case R_PPC64_GOT_TPREL16_LO_DS:
4666 case R_PPC64_GOT_TPREL16_HI:
4667 case R_PPC64_GOT_TPREL16_HA:
1d483afe 4668 if (!info->executable)
411e1bfb
AM		 4669 info->flags |= DF_STATIC_TLS;
4670 tls_type = TLS_TLS | TLS_TPREL;
4671 goto dogottls;
4672
4673 case R_PPC64_GOT_DTPREL16_DS:
4674 case R_PPC64_GOT_DTPREL16_LO_DS:
4675 case R_PPC64_GOT_DTPREL16_HI:
4676 case R_PPC64_GOT_DTPREL16_HA:
4677 tls_type = TLS_TLS | TLS_DTPREL;
4678 dogottls:
4679 sec->has_tls_reloc = 1;
4680 /* Fall thru */
4681
5bd4f169 4682 case R_PPC64_GOT16:
5bd4f169 4683 case R_PPC64_GOT16_DS:
65f38f15
AM		 4684 case R_PPC64_GOT16_HA:
4685 case R_PPC64_GOT16_HI:
4686 case R_PPC64_GOT16_LO:
5bd4f169 4687 case R_PPC64_GOT16_LO_DS:
65f38f15 4688 /* This symbol requires a global offset table entry. */
4c52953f 4689 sec->has_toc_reloc = 1;
e717da7e
AM		 4690 if (ppc64_elf_tdata (abfd)->got == NULL
4691 && !create_got_section (abfd, info))
b34976b6 4692 return FALSE;
5bd4f169
AM		 4693
4694 if (h != NULL)
4695 {
411e1bfb
AM		 4696 struct ppc_link_hash_entry *eh;
4697 struct got_entry *ent;
65f38f15 4698
411e1bfb
AM		 4699 eh = (struct ppc_link_hash_entry *) h;
4700 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4701 if (ent->addend == rel->r_addend
e717da7e 4702 && ent->owner == abfd
411e1bfb
AM		 4703 && ent->tls_type == tls_type)
4704 break;
4705 if (ent == NULL)
5bd4f169 4706 {
411e1bfb 4707 bfd_size_type amt = sizeof (*ent);
4ce794b7 4708 ent = bfd_alloc (abfd, amt);
411e1bfb 4709 if (ent == NULL)
b34976b6 4710 return FALSE;
411e1bfb
AM		 4711 ent->next = eh->elf.got.glist;
4712 ent->addend = rel->r_addend;
e717da7e 4713 ent->owner = abfd;
411e1bfb
AM		 4714 ent->tls_type = tls_type;
4715 ent->got.refcount = 0;
4716 eh->elf.got.glist = ent;
5bd4f169 4717 }
411e1bfb 4718 ent->got.refcount += 1;
e7b938ca 4719 eh->tls_mask |= tls_type;
5bd4f169 4720 }
411e1bfb
AM		 4721 else
4722 /* This is a global offset table entry for a local symbol. */
4723 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4724 rel->r_addend, tls_type))
4725 return FALSE;
5bd4f169
AM		 4726 break;
4727
5bd4f169 4728 case R_PPC64_PLT16_HA:
65f38f15
AM		 4729 case R_PPC64_PLT16_HI:
4730 case R_PPC64_PLT16_LO:
4731 case R_PPC64_PLT32:
4732 case R_PPC64_PLT64:
5bd4f169 4733 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4734 actually build the entry in adjust_dynamic_symbol,
4735 because this might be a case of linking PIC code without
4736 linking in any dynamic objects, in which case we don't
4737 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4738 if (h == NULL)
4739 {
4740 /* It does not make sense to have a procedure linkage
3fad3c7c 4741 table entry for a local symbol. */
5bd4f169 4742 bfd_set_error (bfd_error_bad_value);
b34976b6 4743 return FALSE;
5bd4f169 4744 }
411e1bfb
AM		 4745 else
4746 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4747 rel->r_addend))
4748 return FALSE;
5bd4f169
AM		 4749 break;
4750
4751 /* The following relocations don't need to propagate the
4752 relocation if linking a shared object since they are
4753 section relative. */
4754 case R_PPC64_SECTOFF:
4755 case R_PPC64_SECTOFF_LO:
4756 case R_PPC64_SECTOFF_HI:
4757 case R_PPC64_SECTOFF_HA:
4758 case R_PPC64_SECTOFF_DS:
4759 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4760 case R_PPC64_DTPREL16:
4761 case R_PPC64_DTPREL16_LO:
4762 case R_PPC64_DTPREL16_HI:
4763 case R_PPC64_DTPREL16_HA:
4764 case R_PPC64_DTPREL16_DS:
4765 case R_PPC64_DTPREL16_LO_DS:
4766 case R_PPC64_DTPREL16_HIGHER:
4767 case R_PPC64_DTPREL16_HIGHERA:
4768 case R_PPC64_DTPREL16_HIGHEST:
4769 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4770 break;
4771
ad8e1ba5
AM		 4772 /* Nor do these. */
4773 case R_PPC64_TOC16:
4774 case R_PPC64_TOC16_LO:
4775 case R_PPC64_TOC16_HI:
4776 case R_PPC64_TOC16_HA:
4777 case R_PPC64_TOC16_DS:
4778 case R_PPC64_TOC16_LO_DS:
4c52953f 4779 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4780 break;
4781
5bd4f169
AM		 4782 /* This relocation describes the C++ object vtable hierarchy.
4783 Reconstruct it for later use during GC. */
4784 case R_PPC64_GNU_VTINHERIT:
c152c796 4785 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4786 return FALSE;
5bd4f169
AM		 4787 break;
4788
4789 /* This relocation describes which C++ vtable entries are actually
4790 used. Record for later use during GC. */
4791 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 4792 BFD_ASSERT (h != NULL);
4793 if (h != NULL
4794 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4795 return FALSE;
5bd4f169
AM		 4796 break;
4797
721956f4
AM		 4798 case R_PPC64_REL14:
4799 case R_PPC64_REL14_BRTAKEN:
4800 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 4801 {
4802 asection *dest = NULL;
4803
4804 /* Heuristic: If jumping outside our section, chances are
4805 we are going to need a stub. */
4806 if (h != NULL)
4807 {
4808 /* If the sym is weak it may be overridden later, so
4809 don't assume we know where a weak sym lives. */
4810 if (h->root.type == bfd_link_hash_defined)
4811 dest = h->root.u.def.section;
4812 }
4813 else
4814 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4815 sec, r_symndx);
4816 if (dest != sec)
7c8fe5c4 4817 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4818 }
721956f4
AM		 4819 /* Fall through. */
4820
5d1634d7 4821 case R_PPC64_REL24:
8387904d 4822 if (h != NULL)
5d1634d7
AM		 4823 {
4824 /* We may need a .plt entry if the function this reloc
4825 refers to is in a shared lib. */
411e1bfb
AM		 4826 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4827 rel->r_addend))
4828 return FALSE;
8387904d
AM		 4829 if (h == &htab->tls_get_addr->elf
4830 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4831 sec->has_tls_reloc = 1;
8387904d 4832 else if (htab->tls_get_addr == NULL
0112cd26 4833 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM		 4834 && (h->root.root.string[15] == 0
4835 || h->root.root.string[15] == '@'))
411e1bfb 4836 {
8387904d
AM		 4837 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4838 sec->has_tls_reloc = 1;
4839 }
4840 else if (htab->tls_get_addr_fd == NULL
0112cd26 4841 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM		 4842 && (h->root.root.string[14] == 0
4843 || h->root.root.string[14] == '@'))
4844 {
4845 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4846 sec->has_tls_reloc = 1;
4847 }
4848 }
4849 break;
4850
4851 case R_PPC64_TPREL64:
4852 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
1d483afe 4853 if (!info->executable)
411e1bfb
AM		 4854 info->flags |= DF_STATIC_TLS;
4855 goto dotlstoc;
4856
4857 case R_PPC64_DTPMOD64:
4858 if (rel + 1 < rel_end
4859 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4860 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4861 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4862 else
951fd09b 4863 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4864 goto dotlstoc;
4865
4866 case R_PPC64_DTPREL64:
4867 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4868 if (rel != relocs
4869 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4870 && rel[-1].r_offset == rel->r_offset - 8)
4871 /* This is the second reloc of a dtpmod, dtprel pair.
4872 Don't mark with TLS_DTPREL. */
4873 goto dodyn;
4874
4875 dotlstoc:
4876 sec->has_tls_reloc = 1;
4877 if (h != NULL)
4878 {
4879 struct ppc_link_hash_entry *eh;
4880 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4881 eh->tls_mask |= tls_type;
411e1bfb
AM		 4882 }
4883 else
4884 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4885 rel->r_addend, tls_type))
4886 return FALSE;
4887
7c8fe5c4
AM		 4888 ppc64_sec = ppc64_elf_section_data (sec);
4889 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4890 {
e7b938ca 4891 /* One extra to simplify get_tls_mask. */
eea6121a 4892 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM		 4893 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4894 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4895 return FALSE;
7c8fe5c4
AM		 4896 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4897 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 4898 }
4899 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4900 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4901
4902 /* Mark the second slot of a GD or LD entry.
4903 -1 to indicate GD and -2 to indicate LD. */
4904 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4905 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4906 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4907 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4908 goto dodyn;
4909
4910 case R_PPC64_TPREL16:
4911 case R_PPC64_TPREL16_LO:
4912 case R_PPC64_TPREL16_HI:
4913 case R_PPC64_TPREL16_HA:
4914 case R_PPC64_TPREL16_DS:
4915 case R_PPC64_TPREL16_LO_DS:
4916 case R_PPC64_TPREL16_HIGHER:
4917 case R_PPC64_TPREL16_HIGHERA:
4918 case R_PPC64_TPREL16_HIGHEST:
4919 case R_PPC64_TPREL16_HIGHESTA:
4920 if (info->shared)
4921 {
1d483afe
AM		 4922 if (!info->executable)
4923 info->flags |= DF_STATIC_TLS;
411e1bfb 4924 goto dodyn;
5d1634d7
AM		 4925 }
4926 break;
4927
e86ce104 4928 case R_PPC64_ADDR64:
1e2f5b6e 4929 if (opd_sym_map != NULL
1e2f5b6e 4930 && rel + 1 < rel_end
4ce794b7 4931 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4932 {
8387904d
AM		 4933 if (h != NULL)
4934 {
4935 if (h->root.root.string[0] == '.'
4936 && h->root.root.string[1] != 0
4937 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4938 ;
4939 else
4940 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4941 }
4942 else
4943 {
4944 asection *s;
1e2f5b6e 4945
8387904d
AM		 4946 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4947 r_symndx);
4948 if (s == NULL)
4949 return FALSE;
4950 else if (s != sec)
3f764659 4951 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4952 }
1e2f5b6e 4953 }
e86ce104
AM		 4954 /* Fall through. */
4955
04c9666a 4956 case R_PPC64_REL30:
5bd4f169 4957 case R_PPC64_REL32:
04c9666a 4958 case R_PPC64_REL64:
65f38f15
AM		 4959 case R_PPC64_ADDR14:
4960 case R_PPC64_ADDR14_BRNTAKEN:
4961 case R_PPC64_ADDR14_BRTAKEN:
4962 case R_PPC64_ADDR16:
4963 case R_PPC64_ADDR16_DS:
4964 case R_PPC64_ADDR16_HA:
4965 case R_PPC64_ADDR16_HI:
4966 case R_PPC64_ADDR16_HIGHER:
4967 case R_PPC64_ADDR16_HIGHERA:
4968 case R_PPC64_ADDR16_HIGHEST:
4969 case R_PPC64_ADDR16_HIGHESTA:
4970 case R_PPC64_ADDR16_LO:
4971 case R_PPC64_ADDR16_LO_DS:
4972 case R_PPC64_ADDR24:
65f38f15 4973 case R_PPC64_ADDR32:
65f38f15
AM		 4974 case R_PPC64_UADDR16:
4975 case R_PPC64_UADDR32:
4976 case R_PPC64_UADDR64:
5bd4f169 4977 case R_PPC64_TOC:
81848ca0
AM		 4978 if (h != NULL && !info->shared)
4979 /* We may need a copy reloc. */
f5385ebf 4980 h->non_got_ref = 1;
81848ca0 4981
41bd81ab 4982 /* Don't propagate .opd relocs. */
1e2f5b6e 4983 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4984 break;
e86ce104 4985
65f38f15
AM		 4986 /* If we are creating a shared library, and this is a reloc
4987 against a global symbol, or a non PC relative reloc
4988 against a local symbol, then we need to copy the reloc
4989 into the shared library. However, if we are linking with
4990 -Bsymbolic, we do not need to copy a reloc against a
4991 global symbol which is defined in an object we are
4992 including in the link (i.e., DEF_REGULAR is set). At
4993 this point we have not seen all the input files, so it is
4994 possible that DEF_REGULAR is not set now but will be set
4995 later (it is never cleared). In case of a weak definition,
4996 DEF_REGULAR may be cleared later by a strong definition in
4997 a shared library. We account for that possibility below by
f4656909 4998 storing information in the dyn_relocs field of the hash
65f38f15
AM		 4999 table entry. A similar situation occurs when creating
5000 shared libraries and symbol visibility changes render the
5001 symbol local.
5002
5003 If on the other hand, we are creating an executable, we
5004 may need to keep relocations for symbols satisfied by a
5005 dynamic library if we manage to avoid copy relocs for the
5006 symbol. */
411e1bfb 5007 dodyn:
65f38f15 5008 if ((info->shared
1d483afe 5009 && (must_be_dyn_reloc (info, r_type)
65f38f15
AM		 5010 || (h != NULL
5011 && (! info->symbolic
5012 || h->root.type == bfd_link_hash_defweak
f5385ebf 5013 || !h->def_regular))))
f4656909
AM		 5014 || (ELIMINATE_COPY_RELOCS
5015 && !info->shared
65f38f15
AM		 5016 && h != NULL
5017 && (h->root.type == bfd_link_hash_defweak
f5385ebf 5018 || !h->def_regular)))
5bd4f169 5019 {
ec338859
AM		 5020 struct ppc_dyn_relocs *p;
5021 struct ppc_dyn_relocs **head;
5022
65f38f15
AM		 5023 /* We must copy these reloc types into the output file.
5024 Create a reloc section in dynobj and make room for
5025 this reloc. */
5bd4f169
AM		 5026 if (sreloc == NULL)
5027 {
5028 const char *name;
65f38f15 5029 bfd *dynobj;
5bd4f169
AM		 5030
5031 name = (bfd_elf_string_from_elf_section
5032 (abfd,
5033 elf_elfheader (abfd)->e_shstrndx,
5034 elf_section_data (sec)->rel_hdr.sh_name));
5035 if (name == NULL)
b34976b6 5036 return FALSE;
5bd4f169 5037
0112cd26 5038 if (! CONST_STRNEQ (name, ".rela")
65f38f15
AM		 5039 || strcmp (bfd_get_section_name (abfd, sec),
5040 name + 5) != 0)
5041 {
5042 (*_bfd_error_handler)
d003868e
AM		 5043 (_("%B: bad relocation section name `%s\'"),
5044 abfd, name);
5d1634d7 5045 bfd_set_error (bfd_error_bad_value);
65f38f15
AM		 5046 }
5047
65f38f15 5048 dynobj = htab->elf.dynobj;
5bd4f169
AM		 5049 sreloc = bfd_get_section_by_name (dynobj, name);
5050 if (sreloc == NULL)
5051 {
5052 flagword flags;
5053
5bd4f169 5054 flags = (SEC_HAS_CONTENTS | SEC_READONLY
77623a34
AM		 5055 | SEC_IN_MEMORY | SEC_LINKER_CREATED
5056 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 5057 sreloc = bfd_make_section_with_flags (dynobj,
5058 name,
5059 flags);
5bd4f169 5060 if (sreloc == NULL
65f38f15 5061 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
b34976b6 5062 return FALSE;
5bd4f169 5063 }
65f38f15 5064 elf_section_data (sec)->sreloc = sreloc;
5bd4f169
AM		 5065 }
5066
65f38f15
AM		 5067 /* If this is a global symbol, we count the number of
5068 relocations we need for this symbol. */
5069 if (h != NULL)
5070 {
ec338859 5071 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 5072 }
5073 else
5074 {
ec338859
AM		 5075 /* Track dynamic relocs needed for local syms too.
5076 We really need local syms available to do this
5077 easily. Oh well. */
5078
5079 asection *s;
6edfbbad
DJ		 5080 void *vpp;
5081
ec338859
AM		 5082 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
5083 sec, r_symndx);
5084 if (s == NULL)
b34976b6 5085 return FALSE;
ec338859 5086
6edfbbad
DJ		 5087 vpp = &elf_section_data (s)->local_dynrel;
5088 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 5089 }
ec338859
AM		 5090
5091 p = *head;
5092 if (p == NULL || p->sec != sec)
5093 {
4ce794b7 5094 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 5095 if (p == NULL)
b34976b6 5096 return FALSE;
ec338859
AM		 5097 p->next = *head;
5098 *head = p;
5099 p->sec = sec;
5100 p->count = 0;
5101 p->pc_count = 0;
5102 }
5103
5104 p->count += 1;
1d483afe 5105 if (!must_be_dyn_reloc (info, r_type))
ec338859 5106 p->pc_count += 1;
65f38f15 5107 }
5bd4f169 5108 break;
65f38f15
AM		 5109
5110 default:
96e0dda4 5111 break;
5bd4f169
AM		 5112 }
5113 }
5114
b34976b6 5115 return TRUE;
5bd4f169
AM		 5116}
5117
8387904d
AM		 5118/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5119 of the code entry point, and its section. */
5120
5121static bfd_vma
5122opd_entry_value (asection *opd_sec,
5123 bfd_vma offset,
5124 asection **code_sec,
5125 bfd_vma *code_off)
5126{
5127 bfd *opd_bfd = opd_sec->owner;
8860955f 5128 Elf_Internal_Rela *relocs;
8387904d 5129 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5130 bfd_vma val;
8387904d 5131
4b85d634
AM		 5132 /* No relocs implies we are linking a --just-symbols object. */
5133 if (opd_sec->reloc_count == 0)
5134 {
5135 bfd_vma val;
5136
5137 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5138 return (bfd_vma) -1;
3b36f7e6 5139
4b85d634
AM		 5140 if (code_sec != NULL)
5141 {
5142 asection *sec, *likely = NULL;
5143 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5144 if (sec->vma <= val
5145 && (sec->flags & SEC_LOAD) != 0
5146 && (sec->flags & SEC_ALLOC) != 0)
5147 likely = sec;
5148 if (likely != NULL)
5149 {
5150 *code_sec = likely;
5151 if (code_off != NULL)
5152 *code_off = val - likely->vma;
5153 }
5154 }
5155 return val;
5156 }
5157
0c8d6e5c 5158 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5159
8860955f
AM		 5160 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5161 if (relocs == NULL)
5162 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5163
8387904d 5164 /* Go find the opd reloc at the sym address. */
8860955f 5165 lo = relocs;
8387904d
AM		 5166 BFD_ASSERT (lo != NULL);
5167 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5168 val = (bfd_vma) -1;
8387904d
AM		 5169 while (lo < hi)
5170 {
5171 look = lo + (hi - lo) / 2;
5172 if (look->r_offset < offset)
5173 lo = look + 1;
5174 else if (look->r_offset > offset)
5175 hi = look;
5176 else
5177 {
0ffa91dd
NC		 5178 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5179
8387904d
AM		 5180 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5181 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5182 {
5183 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5184 asection *sec;
5185
5186 if (symndx < symtab_hdr->sh_info)
5187 {
5188 Elf_Internal_Sym *sym;
5189
5190 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5191 if (sym == NULL)
5192 {
5193 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5194 symtab_hdr->sh_info,
5195 0, NULL, NULL, NULL);
5196 if (sym == NULL)
645ea6a9 5197 break;
8387904d
AM		 5198 symtab_hdr->contents = (bfd_byte *) sym;
5199 }
5200
5201 sym += symndx;
5202 val = sym->st_value;
cb33740c 5203 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM		 5204 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5205 }
5206 else
5207 {
5208 struct elf_link_hash_entry **sym_hashes;
5209 struct elf_link_hash_entry *rh;
5210
5211 sym_hashes = elf_sym_hashes (opd_bfd);
5212 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5213 while (rh->root.type == bfd_link_hash_indirect
5214 || rh->root.type == bfd_link_hash_warning)
5215 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5216 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5217 || rh->root.type == bfd_link_hash_defweak);
5218 val = rh->root.u.def.value;
5219 sec = rh->root.u.def.section;
5220 }
5221 val += look->r_addend;
5222 if (code_off != NULL)
5223 *code_off = val;
5224 if (code_sec != NULL)
5225 *code_sec = sec;
5226 if (sec != NULL && sec->output_section != NULL)
5227 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 5228 }
5229 break;
5230 }
5231 }
645ea6a9 5232
645ea6a9 5233 return val;
8387904d
AM		 5234}
5235
74f0fb50
AM		 5236/* Mark all our entry sym sections, both opd and code section. */
5237
5238static void
5239ppc64_elf_gc_keep (struct bfd_link_info *info)
5240{
5241 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5242 struct bfd_sym_chain *sym;
5243
5244 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5245 {
5246 struct ppc_link_hash_entry *eh;
5247 asection *sec;
5248
5249 eh = (struct ppc_link_hash_entry *)
5250 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5251 if (eh == NULL)
5252 continue;
5253 if (eh->elf.root.type != bfd_link_hash_defined
5254 && eh->elf.root.type != bfd_link_hash_defweak)
5255 continue;
5256
5257 if (eh->is_func_descriptor
5258 && (eh->oh->elf.root.type == bfd_link_hash_defined
5259 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5260 {
5261 sec = eh->oh->elf.root.u.def.section;
5262 sec->flags |= SEC_KEEP;
5263 }
5264 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5265 && opd_entry_value (eh->elf.root.u.def.section,
5266 eh->elf.root.u.def.value,
5267 &sec, NULL) != (bfd_vma) -1)
5268 sec->flags |= SEC_KEEP;
5269
5270 sec = eh->elf.root.u.def.section;
5271 sec->flags |= SEC_KEEP;
5272 }
5273}
5274
64d03ab5
AM		 5275/* Mark sections containing dynamically referenced symbols. When
5276 building shared libraries, we must assume that any visible symbol is
5277 referenced. */
5278
5279static bfd_boolean
5280ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5281{
5282 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5283 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5284
5285 if (eh->elf.root.type == bfd_link_hash_warning)
5286 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5287
5288 /* Dynamic linking info is on the func descriptor sym. */
5289 if (eh->oh != NULL
5290 && eh->oh->is_func_descriptor
5291 && (eh->oh->elf.root.type == bfd_link_hash_defined
5292 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5293 eh = eh->oh;
5294
5295 if ((eh->elf.root.type == bfd_link_hash_defined
5296 || eh->elf.root.type == bfd_link_hash_defweak)
5297 && (eh->elf.ref_dynamic
5298 || (!info->executable
5299 && eh->elf.def_regular
5300 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5301 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5302 {
5303 asection *code_sec;
5304
5305 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5306
5307 /* Function descriptor syms cause the associated
5308 function code sym section to be marked. */
5309 if (eh->is_func_descriptor
5310 && (eh->oh->elf.root.type == bfd_link_hash_defined
5311 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5312 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5313 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5314 && opd_entry_value (eh->elf.root.u.def.section,
5315 eh->elf.root.u.def.value,
5316 &code_sec, NULL) != (bfd_vma) -1)
5317 code_sec->flags |= SEC_KEEP;
5318 }
5319
5320 return TRUE;
5321}
5322
5bd4f169
AM		 5323/* Return the section that should be marked against GC for a given
5324 relocation. */
5325
5326static asection *
4ce794b7 5327ppc64_elf_gc_mark_hook (asection *sec,
74f0fb50 5328 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4ce794b7
AM		 5329 Elf_Internal_Rela *rel,
5330 struct elf_link_hash_entry *h,
5331 Elf_Internal_Sym *sym)
5bd4f169 5332{
ccfa59ea
AM		 5333 asection *rsec;
5334
ccfa59ea
AM		 5335 /* Syms return NULL if we're marking .opd, so we avoid marking all
5336 function sections, as all functions are referenced in .opd. */
5337 rsec = NULL;
5338 if (get_opd_info (sec) != NULL)
5339 return rsec;
1e2f5b6e 5340
5bd4f169
AM		 5341 if (h != NULL)
5342 {
04c9666a 5343 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5344 struct ppc_link_hash_entry *eh;
a33d1f77 5345
4ce794b7 5346 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5347 switch (r_type)
5bd4f169
AM		 5348 {
5349 case R_PPC64_GNU_VTINHERIT:
5350 case R_PPC64_GNU_VTENTRY:
5351 break;
5352
5353 default:
5354 switch (h->root.type)
5355 {
5356 case bfd_link_hash_defined:
5357 case bfd_link_hash_defweak:
ccfa59ea 5358 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5359 if (eh->oh != NULL
5360 && eh->oh->is_func_descriptor
5361 && (eh->oh->elf.root.type == bfd_link_hash_defined
5362 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5363 eh = eh->oh;
1e2f5b6e
AM		 5364
5365 /* Function descriptor syms cause the associated
5366 function code sym section to be marked. */
c4f68ce3
AM		 5367 if (eh->is_func_descriptor
5368 && (eh->oh->elf.root.type == bfd_link_hash_defined
5369 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5370 {
5371 /* They also mark their opd section. */
74f0fb50 5372 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea
AM		 5373
5374 rsec = eh->oh->elf.root.u.def.section;
5375 }
8387904d
AM		 5376 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5377 && opd_entry_value (eh->elf.root.u.def.section,
5378 eh->elf.root.u.def.value,
5379 &rsec, NULL) != (bfd_vma) -1)
74f0fb50 5380 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5381 else
1e2f5b6e
AM		 5382 rsec = h->root.u.def.section;
5383 break;
5bd4f169
AM		 5384
5385 case bfd_link_hash_common:
1e2f5b6e
AM		 5386 rsec = h->root.u.c.p->section;
5387 break;
5bd4f169
AM		 5388
5389 default:
5390 break;
5391 }
5392 }
5393 }
5394 else
5395 {
74f0fb50 5396 struct _opd_sec_data *opd;
1e2f5b6e
AM		 5397
5398 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 5399 opd = get_opd_info (rsec);
5400 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5401 {
74f0fb50 5402 rsec->gc_mark = 1;
ccfa59ea 5403
74f0fb50 5404 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5405 }
5bd4f169
AM		 5406 }
5407
1e2f5b6e 5408 return rsec;
5bd4f169
AM		 5409}
5410
65f38f15
AM		 5411/* Update the .got, .plt. and dynamic reloc reference counts for the
5412 section being removed. */
5bd4f169 5413
b34976b6 5414static bfd_boolean
4ce794b7
AM		 5415ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5416 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5417{
411e1bfb 5418 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5419 Elf_Internal_Shdr *symtab_hdr;
5420 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5421 struct got_entry **local_got_ents;
5bd4f169 5422 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5423
7dda2462
TG		 5424 if (info->relocatable)
5425 return TRUE;
5426
680a3378
AM		 5427 if ((sec->flags & SEC_ALLOC) == 0)
5428 return TRUE;
5429
ec338859
AM		 5430 elf_section_data (sec)->local_dynrel = NULL;
5431
411e1bfb 5432 htab = ppc_hash_table (info);
0ffa91dd 5433 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5434 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5435 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5436
5437 relend = relocs + sec->reloc_count;
5438 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5439 {
5440 unsigned long r_symndx;
04c9666a 5441 enum elf_ppc64_reloc_type r_type;
58ac9f71 5442 struct elf_link_hash_entry *h = NULL;
411e1bfb 5443 char tls_type = 0;
5bd4f169 5444
a33d1f77 5445 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5446 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5447 if (r_symndx >= symtab_hdr->sh_info)
5448 {
5449 struct ppc_link_hash_entry *eh;
5450 struct ppc_dyn_relocs **pp;
5451 struct ppc_dyn_relocs *p;
5452
5453 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5454 while (h->root.type == bfd_link_hash_indirect
5455 || h->root.type == bfd_link_hash_warning)
5456 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5457 eh = (struct ppc_link_hash_entry *) h;
5458
5459 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5460 if (p->sec == sec)
5461 {
5462 /* Everything must go for SEC. */
5463 *pp = p->next;
5464 break;
5465 }
5466 }
5467
a33d1f77
AM		 5468 switch (r_type)
5469 {
411e1bfb
AM		 5470 case R_PPC64_GOT_TLSLD16:
5471 case R_PPC64_GOT_TLSLD16_LO:
5472 case R_PPC64_GOT_TLSLD16_HI:
5473 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5474 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5475 goto dogot;
5476
5477 case R_PPC64_GOT_TLSGD16:
5478 case R_PPC64_GOT_TLSGD16_LO:
5479 case R_PPC64_GOT_TLSGD16_HI:
5480 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5481 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5482 goto dogot;
5483
5484 case R_PPC64_GOT_TPREL16_DS:
5485 case R_PPC64_GOT_TPREL16_LO_DS:
5486 case R_PPC64_GOT_TPREL16_HI:
5487 case R_PPC64_GOT_TPREL16_HA:
5488 tls_type = TLS_TLS | TLS_TPREL;
5489 goto dogot;
5490
5491 case R_PPC64_GOT_DTPREL16_DS:
5492 case R_PPC64_GOT_DTPREL16_LO_DS:
5493 case R_PPC64_GOT_DTPREL16_HI:
5494 case R_PPC64_GOT_DTPREL16_HA:
5495 tls_type = TLS_TLS | TLS_DTPREL;
5496 goto dogot;
5497
a33d1f77
AM		 5498 case R_PPC64_GOT16:
5499 case R_PPC64_GOT16_DS:
5500 case R_PPC64_GOT16_HA:
5501 case R_PPC64_GOT16_HI:
5502 case R_PPC64_GOT16_LO:
5503 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5504 dogot:
5505 {
5506 struct got_entry *ent;
5507
58ac9f71
AM		 5508 if (h != NULL)
5509 ent = h->got.glist;
411e1bfb
AM		 5510 else
5511 ent = local_got_ents[r_symndx];
5512
5513 for (; ent != NULL; ent = ent->next)
5514 if (ent->addend == rel->r_addend
e717da7e 5515 && ent->owner == abfd
411e1bfb
AM		 5516 && ent->tls_type == tls_type)
5517 break;
5518 if (ent == NULL)
5519 abort ();
5520 if (ent->got.refcount > 0)
5521 ent->got.refcount -= 1;
5522 }
a33d1f77 5523 break;
65f38f15 5524
a33d1f77
AM		 5525 case R_PPC64_PLT16_HA:
5526 case R_PPC64_PLT16_HI:
5527 case R_PPC64_PLT16_LO:
5528 case R_PPC64_PLT32:
5529 case R_PPC64_PLT64:
721956f4
AM		 5530 case R_PPC64_REL14:
5531 case R_PPC64_REL14_BRNTAKEN:
5532 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5533 case R_PPC64_REL24:
58ac9f71 5534 if (h != NULL)
5d1634d7 5535 {
411e1bfb
AM		 5536 struct plt_entry *ent;
5537
411e1bfb
AM		 5538 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5539 if (ent->addend == rel->r_addend)
5540 break;
5541 if (ent == NULL)
5542 abort ();
5543 if (ent->plt.refcount > 0)
5544 ent->plt.refcount -= 1;
5d1634d7 5545 }
e86ce104 5546 break;
5d1634d7 5547
a33d1f77
AM		 5548 default:
5549 break;
5550 }
5551 }
b34976b6 5552 return TRUE;
5bd4f169
AM		 5553}
5554
deb0e272
AM		 5555/* The maximum size of .sfpr. */
5556#define SFPR_MAX (218*4)
5557
5558struct sfpr_def_parms
5559{
699733f6
AM		 5560 const char name[12];
5561 unsigned char lo, hi;
deb0e272
AM		 5562 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5563 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5564};
5565
5566/* Auto-generate _save*, _rest* functions in .sfpr. */
5567
5568static unsigned int
5569sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5570{
5571 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5572 unsigned int i;
5573 size_t len = strlen (parm->name);
5574 bfd_boolean writing = FALSE;
699733f6 5575 char sym[16];
deb0e272
AM		 5576
5577 memcpy (sym, parm->name, len);
5578 sym[len + 2] = 0;
5579
5580 for (i = parm->lo; i <= parm->hi; i++)
5581 {
5582 struct elf_link_hash_entry *h;
5583
5584 sym[len + 0] = i / 10 + '0';
5585 sym[len + 1] = i % 10 + '0';
5586 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5587 if (h != NULL
f5385ebf 5588 && !h->def_regular)
deb0e272
AM		 5589 {
5590 h->root.type = bfd_link_hash_defined;
5591 h->root.u.def.section = htab->sfpr;
5592 h->root.u.def.value = htab->sfpr->size;
5593 h->type = STT_FUNC;
f5385ebf 5594 h->def_regular = 1;
deb0e272
AM		 5595 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5596 writing = TRUE;
5597 if (htab->sfpr->contents == NULL)
5598 {
5599 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5600 if (htab->sfpr->contents == NULL)
5601 return FALSE;
5602 }
5603 }
5604 if (writing)
5605 {
5606 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5607 if (i != parm->hi)
5608 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5609 else
5610 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5611 htab->sfpr->size = p - htab->sfpr->contents;
5612 }
5613 }
5614
5615 return TRUE;
5616}
5617
5618static bfd_byte *
5619savegpr0 (bfd *abfd, bfd_byte *p, int r)
5620{
5621 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5622 return p + 4;
5623}
5624
5625static bfd_byte *
5626savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5627{
5628 p = savegpr0 (abfd, p, r);
5629 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5630 p = p + 4;
5631 bfd_put_32 (abfd, BLR, p);
5632 return p + 4;
5633}
5634
5635static bfd_byte *
5636restgpr0 (bfd *abfd, bfd_byte *p, int r)
5637{
5638 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5639 return p + 4;
5640}
5641
5642static bfd_byte *
5643restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5644{
5645 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5646 p = p + 4;
5647 p = restgpr0 (abfd, p, r);
5648 bfd_put_32 (abfd, MTLR_R0, p);
5649 p = p + 4;
5650 if (r == 29)
5651 {
5652 p = restgpr0 (abfd, p, 30);
5653 p = restgpr0 (abfd, p, 31);
5654 }
5655 bfd_put_32 (abfd, BLR, p);
5656 return p + 4;
5657}
5658
5659static bfd_byte *
5660savegpr1 (bfd *abfd, bfd_byte *p, int r)
5661{
5662 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5663 return p + 4;
5664}
5665
5666static bfd_byte *
5667savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5668{
5669 p = savegpr1 (abfd, p, r);
5670 bfd_put_32 (abfd, BLR, p);
5671 return p + 4;
5672}
5673
5674static bfd_byte *
5675restgpr1 (bfd *abfd, bfd_byte *p, int r)
5676{
5677 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5678 return p + 4;
5679}
5680
5681static bfd_byte *
5682restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5683{
5684 p = restgpr1 (abfd, p, r);
5685 bfd_put_32 (abfd, BLR, p);
5686 return p + 4;
5687}
5688
5689static bfd_byte *
5690savefpr (bfd *abfd, bfd_byte *p, int r)
5691{
5692 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5693 return p + 4;
5694}
5695
5696static bfd_byte *
5697savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5698{
5699 p = savefpr (abfd, p, r);
5700 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5701 p = p + 4;
5702 bfd_put_32 (abfd, BLR, p);
5703 return p + 4;
5704}
5705
5706static bfd_byte *
5707restfpr (bfd *abfd, bfd_byte *p, int r)
5708{
5709 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5710 return p + 4;
5711}
5712
5713static bfd_byte *
5714restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5715{
5716 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5717 p = p + 4;
5718 p = restfpr (abfd, p, r);
5719 bfd_put_32 (abfd, MTLR_R0, p);
5720 p = p + 4;
5721 if (r == 29)
5722 {
5723 p = restfpr (abfd, p, 30);
5724 p = restfpr (abfd, p, 31);
5725 }
5726 bfd_put_32 (abfd, BLR, p);
5727 return p + 4;
5728}
5729
5730static bfd_byte *
5731savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5732{
5733 p = savefpr (abfd, p, r);
5734 bfd_put_32 (abfd, BLR, p);
5735 return p + 4;
5736}
5737
5738static bfd_byte *
5739restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5740{
5741 p = restfpr (abfd, p, r);
5742 bfd_put_32 (abfd, BLR, p);
5743 return p + 4;
5744}
5745
5746static bfd_byte *
5747savevr (bfd *abfd, bfd_byte *p, int r)
5748{
5749 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5750 p = p + 4;
5751 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5752 return p + 4;
5753}
5754
5755static bfd_byte *
5756savevr_tail (bfd *abfd, bfd_byte *p, int r)
5757{
5758 p = savevr (abfd, p, r);
5759 bfd_put_32 (abfd, BLR, p);
5760 return p + 4;
5761}
5762
5763static bfd_byte *
5764restvr (bfd *abfd, bfd_byte *p, int r)
5765{
5766 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5767 p = p + 4;
5768 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5769 return p + 4;
5770}
5771
5772static bfd_byte *
5773restvr_tail (bfd *abfd, bfd_byte *p, int r)
5774{
5775 p = restvr (abfd, p, r);
5776 bfd_put_32 (abfd, BLR, p);
5777 return p + 4;
5778}
5779
e86ce104
AM		 5780/* Called via elf_link_hash_traverse to transfer dynamic linking
5781 information on function code symbol entries to their corresponding
5782 function descriptor symbol entries. */
deb0e272 5783
b34976b6 5784static bfd_boolean
4ce794b7 5785func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5786{
e86ce104 5787 struct bfd_link_info *info;
65f38f15 5788 struct ppc_link_hash_table *htab;
411e1bfb 5789 struct plt_entry *ent;
50bc7936
AM		 5790 struct ppc_link_hash_entry *fh;
5791 struct ppc_link_hash_entry *fdh;
5792 bfd_boolean force_local;
5bd4f169 5793
50bc7936
AM		 5794 fh = (struct ppc_link_hash_entry *) h;
5795 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5796 return TRUE;
e86ce104 5797
50bc7936
AM		 5798 if (fh->elf.root.type == bfd_link_hash_warning)
5799 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5800
4ce794b7 5801 info = inf;
65f38f15 5802 htab = ppc_hash_table (info);
5bd4f169 5803
c09bdfe5
AM		 5804 /* Resolve undefined references to dot-symbols as the value
5805 in the function descriptor, if we have one in a regular object.
5806 This is to satisfy cases like ".quad .foo". Calls to functions
5807 in dynamic objects are handled elsewhere. */
5808 if (fh->elf.root.type == bfd_link_hash_undefweak
5809 && fh->was_undefined
5810 && (fh->oh->elf.root.type == bfd_link_hash_defined
5811 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5812 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5813 && opd_entry_value (fh->oh->elf.root.u.def.section,
5814 fh->oh->elf.root.u.def.value,
5815 &fh->elf.root.u.def.section,
5816 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5817 {
5818 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5819 fh->elf.forced_local = 1;
2b953679
AM		 5820 fh->elf.def_regular = fh->oh->elf.def_regular;
5821 fh->elf.def_dynamic = fh->oh->elf.def_dynamic;
c09bdfe5
AM		 5822 }
5823
e86ce104
AM		 5824 /* If this is a function code symbol, transfer dynamic linking
5825 information to the function descriptor symbol. */
50bc7936 5826 if (!fh->is_func)
b34976b6 5827 return TRUE;
e86ce104 5828
50bc7936 5829 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5830 if (ent->plt.refcount > 0)
5831 break;
50bc7936
AM		 5832 if (ent == NULL
5833 || fh->elf.root.root.string[0] != '.'
5834 || fh->elf.root.root.string[1] == '\0')
5835 return TRUE;
5bd4f169 5836
50bc7936
AM		 5837 /* Find the corresponding function descriptor symbol. Create it
5838 as undefined if necessary. */
5bd4f169 5839
50bc7936
AM		 5840 fdh = get_fdh (fh, htab);
5841 if (fdh != NULL)
5842 while (fdh->elf.root.type == bfd_link_hash_indirect
5843 || fdh->elf.root.type == bfd_link_hash_warning)
5844 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5845
50bc7936
AM		 5846 if (fdh == NULL
5847 && info->shared
5848 && (fh->elf.root.type == bfd_link_hash_undefined
5849 || fh->elf.root.type == bfd_link_hash_undefweak))
5850 {
908b32fc 5851 fdh = make_fdh (info, fh);
bb700d78
AM		 5852 if (fdh == NULL)
5853 return FALSE;
50bc7936 5854 }
648cca2c 5855
908b32fc 5856 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5857 code symbol is strong undefined, make the fake sym the same.
5858 If the function code symbol is defined, then force the fake
5859 descriptor local; We can't support overriding of symbols in a
5860 shared library on a fake descriptor. */
908b32fc
AM		 5861
5862 if (fdh != NULL
5863 && fdh->fake
433817dd 5864 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5865 {
433817dd
AM		 5866 if (fh->elf.root.type == bfd_link_hash_undefined)
5867 {
5868 fdh->elf.root.type = bfd_link_hash_undefined;
5869 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5870 }
5871 else if (fh->elf.root.type == bfd_link_hash_defined
5872 || fh->elf.root.type == bfd_link_hash_defweak)
5873 {
5874 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5875 }
908b32fc
AM		 5876 }
5877
50bc7936 5878 if (fdh != NULL
f5385ebf 5879 && !fdh->elf.forced_local
50bc7936 5880 && (info->shared
f5385ebf
AM		 5881 || fdh->elf.def_dynamic
5882 || fdh->elf.ref_dynamic
50bc7936
AM		 5883 || (fdh->elf.root.type == bfd_link_hash_undefweak
5884 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5885 {
5886 if (fdh->elf.dynindx == -1)
c152c796 5887 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5888 return FALSE;
f5385ebf
AM		 5889 fdh->elf.ref_regular |= fh->elf.ref_regular;
5890 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5891 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5892 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5893 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5894 {
40d16e0b 5895 move_plt_plist (fh, fdh);
f5385ebf 5896 fdh->elf.needs_plt = 1;
e86ce104 5897 }
50bc7936 5898 fdh->is_func_descriptor = 1;
34814b9f
AM		 5899 fdh->oh = fh;
5900 fh->oh = fdh;
e86ce104
AM		 5901 }
5902
50bc7936
AM		 5903 /* Now that the info is on the function descriptor, clear the
5904 function code sym info. Any function code syms for which we
5905 don't have a definition in a regular file, we force local.
5906 This prevents a shared library from exporting syms that have
5907 been imported from another library. Function code syms that
5908 are really in the library we must leave global to prevent the
5909 linker dragging in a definition from a static library. */
93f3fa99
AM		 5910 force_local = (!fh->elf.def_regular
5911 || fdh == NULL
5912 || !fdh->elf.def_regular
5913 || fdh->elf.forced_local);
50bc7936
AM		 5914 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5915
b34976b6 5916 return TRUE;
e86ce104 5917}
40b8271b 5918
e86ce104 5919/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5920 this hook to a) provide some gcc support functions, and b) transfer
5921 dynamic linking information gathered so far on function code symbol
5922 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5923
b34976b6 5924static bfd_boolean
4ce794b7
AM		 5925ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5926 struct bfd_link_info *info)
e86ce104
AM		 5927{
5928 struct ppc_link_hash_table *htab;
82bd7b59 5929 unsigned int i;
deb0e272
AM		 5930 const struct sfpr_def_parms funcs[] =
5931 {
5932 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5933 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5934 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5935 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5936 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5937 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5938 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5939 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5940 { "._savef", 14, 31, savefpr, savefpr1_tail },
5941 { "._restf", 14, 31, restfpr, restfpr1_tail },
5942 { "_savevr_", 20, 31, savevr, savevr_tail },
5943 { "_restvr_", 20, 31, restvr, restvr_tail }
5944 };
e86ce104
AM		 5945
5946 htab = ppc_hash_table (info);
82bd7b59
AM		 5947 if (htab->sfpr == NULL)
5948 /* We don't have any relocs. */
b34976b6 5949 return TRUE;
82bd7b59 5950
deb0e272
AM		 5951 /* Provide any missing _save* and _rest* functions. */
5952 htab->sfpr->size = 0;
5953 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5954 if (!sfpr_define (info, &funcs[i]))
5955 return FALSE;
82bd7b59 5956
4ce794b7 5957 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5958
eea6121a 5959 if (htab->sfpr->size == 0)
8423293d 5960 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5961
b34976b6 5962 return TRUE;
e86ce104
AM		 5963}
5964
5965/* Adjust a symbol defined by a dynamic object and referenced by a
5966 regular object. The current definition is in some section of the
5967 dynamic object, but we're not including those sections. We have to
5968 change the definition to something the rest of the link can
5969 understand. */
5970
b34976b6 5971static bfd_boolean
4ce794b7
AM		 5972ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5973 struct elf_link_hash_entry *h)
e86ce104
AM		 5974{
5975 struct ppc_link_hash_table *htab;
e86ce104 5976 asection *s;
e86ce104
AM		 5977
5978 htab = ppc_hash_table (info);
5979
5980 /* Deal with function syms. */
5981 if (h->type == STT_FUNC
f5385ebf 5982 || h->needs_plt)
e86ce104
AM		 5983 {
5984 /* Clear procedure linkage table information for any symbol that
5985 won't need a .plt entry. */
411e1bfb
AM		 5986 struct plt_entry *ent;
5987 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5988 if (ent->plt.refcount > 0)
5989 break;
8387904d 5990 if (ent == NULL
9c7a29a3
AM		 5991 || SYMBOL_CALLS_LOCAL (info, h)
5992 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5993 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5994 {
411e1bfb 5995 h->plt.plist = NULL;
f5385ebf 5996 h->needs_plt = 0;
40b8271b 5997 }
5bd4f169 5998 }
bbd7ec4a 5999 else
411e1bfb 6000 h->plt.plist = NULL;
5bd4f169
AM		 6001
6002 /* If this is a weak symbol, and there is a real definition, the
6003 processor independent code will have arranged for us to see the
6004 real definition first, and we can just use the same value. */
f6e332e6 6005 if (h->u.weakdef != NULL)
5bd4f169 6006 {
f6e332e6
AM		 6007 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6008 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6009 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6010 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 6011 if (ELIMINATE_COPY_RELOCS)
f6e332e6 6012 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 6013 return TRUE;
5bd4f169
AM		 6014 }
6015
5bd4f169
AM		 6016 /* If we are creating a shared library, we must presume that the
6017 only references to the symbol are via the global offset table.
6018 For such cases we need not do anything here; the relocations will
6019 be handled correctly by relocate_section. */
6020 if (info->shared)
b34976b6 6021 return TRUE;
5bd4f169 6022
65f38f15
AM		 6023 /* If there are no references to this symbol that do not use the
6024 GOT, we don't need to generate a copy reloc. */
f5385ebf 6025 if (!h->non_got_ref)
b34976b6 6026 return TRUE;
65f38f15 6027
b186458a
JJ		 6028 /* Don't generate a copy reloc for symbols defined in the executable. */
6029 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6030 return TRUE;
6031
f4656909 6032 if (ELIMINATE_COPY_RELOCS)
65f38f15 6033 {
f4656909
AM		 6034 struct ppc_link_hash_entry * eh;
6035 struct ppc_dyn_relocs *p;
65f38f15 6036
f4656909
AM		 6037 eh = (struct ppc_link_hash_entry *) h;
6038 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6039 {
6040 s = p->sec->output_section;
6041 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6042 break;
6043 }
6044
6045 /* If we didn't find any dynamic relocs in read-only sections, then
6046 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6047 if (p == NULL)
6048 {
f5385ebf 6049 h->non_got_ref = 0;
f4656909
AM		 6050 return TRUE;
6051 }
65f38f15
AM		 6052 }
6053
5d35169e 6054 if (h->plt.plist != NULL)
97b639ba
AM		 6055 {
6056 /* We should never get here, but unfortunately there are versions
6057 of gcc out there that improperly (for this ABI) put initialized
6058 function pointers, vtable refs and suchlike in read-only
6059 sections. Allow them to proceed, but warn that this might
6060 break at runtime. */
6061 (*_bfd_error_handler)
6062 (_("copy reloc against `%s' requires lazy plt linking; "
6063 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6064 h->root.root.string);
6065 }
5d35169e
AM		 6066
6067 /* This is a reference to a symbol defined by a dynamic object which
6068 is not a function. */
6069
909272ee
AM		 6070 if (h->size == 0)
6071 {
6072 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6073 h->root.root.string);
6074 return TRUE;
6075 }
6076
5bd4f169
AM		 6077 /* We must allocate the symbol in our .dynbss section, which will
6078 become part of the .bss section of the executable. There will be
6079 an entry for this symbol in the .dynsym section. The dynamic
6080 object will contain position independent code, so all references
6081 from the dynamic object to this symbol will go through the global
6082 offset table. The dynamic linker will use the .dynsym entry to
6083 determine the address it must put in the global offset table, so
6084 both the dynamic object and the regular object will refer to the
6085 same memory location for the variable. */
5bd4f169 6086
04c9666a
AM		 6087 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6088 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 6089 runtime process image. We need to remember the offset into the
6090 .rela.bss section we are going to use. */
6091 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6092 {
eea6121a 6093 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 6094 h->needs_copy = 1;
5bd4f169
AM		 6095 }
6096
4ce794b7 6097 s = htab->dynbss;
5bd4f169 6098
027297b7 6099 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 6100}
6101
e86ce104
AM		 6102/* If given a function descriptor symbol, hide both the function code
6103 sym and the descriptor. */
6104static void
4ce794b7
AM		 6105ppc64_elf_hide_symbol (struct bfd_link_info *info,
6106 struct elf_link_hash_entry *h,
6107 bfd_boolean force_local)
e86ce104 6108{
34814b9f 6109 struct ppc_link_hash_entry *eh;
e86ce104
AM		 6110 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6111
34814b9f
AM		 6112 eh = (struct ppc_link_hash_entry *) h;
6113 if (eh->is_func_descriptor)
e86ce104 6114 {
34814b9f 6115 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 6116
721956f4 6117 if (fh == NULL)
d1329ca3
AM		 6118 {
6119 const char *p, *q;
6120 struct ppc_link_hash_table *htab;
6121 char save;
6122
6123 /* We aren't supposed to use alloca in BFD because on
6124 systems which do not have alloca the version in libiberty
6125 calls xmalloc, which might cause the program to crash
6126 when it runs out of memory. This function doesn't have a
6127 return status, so there's no way to gracefully return an
6128 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 6129 accessed; It's either a string in an ELF string table,
6130 or allocated in an objalloc structure. */
d1329ca3 6131
34814b9f 6132 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 6133 save = *p;
6134 *(char *) p = '.';
6135 htab = ppc_hash_table (info);
34814b9f
AM		 6136 fh = (struct ppc_link_hash_entry *)
6137 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 6138 *(char *) p = save;
6139
6140 /* Unfortunately, if it so happens that the string we were
6141 looking for was allocated immediately before this string,
6142 then we overwrote the string terminator. That's the only
6143 reason the lookup should fail. */
6144 if (fh == NULL)
6145 {
34814b9f
AM		 6146 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6147 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 6148 --q, --p;
34814b9f
AM		 6149 if (q < eh->elf.root.root.string && *p == '.')
6150 fh = (struct ppc_link_hash_entry *)
6151 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 6152 }
6153 if (fh != NULL)
6154 {
34814b9f
AM		 6155 eh->oh = fh;
6156 fh->oh = eh;
d1329ca3
AM		 6157 }
6158 }
e86ce104 6159 if (fh != NULL)
34814b9f 6160 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 6161 }
6162}
6163
411e1bfb 6164static bfd_boolean
8843416a
AM		 6165get_sym_h (struct elf_link_hash_entry **hp,
6166 Elf_Internal_Sym **symp,
6167 asection **symsecp,
6168 char **tls_maskp,
6169 Elf_Internal_Sym **locsymsp,
6170 unsigned long r_symndx,
6171 bfd *ibfd)
411e1bfb 6172{
0ffa91dd 6173 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 6174
6175 if (r_symndx >= symtab_hdr->sh_info)
6176 {
6177 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6178 struct elf_link_hash_entry *h;
6179
6180 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6181 while (h->root.type == bfd_link_hash_indirect
6182 || h->root.type == bfd_link_hash_warning)
6183 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6184
6185 if (hp != NULL)
6186 *hp = h;
6187
6188 if (symp != NULL)
6189 *symp = NULL;
6190
6191 if (symsecp != NULL)
6192 {
6193 asection *symsec = NULL;
6194 if (h->root.type == bfd_link_hash_defined
6195 || h->root.type == bfd_link_hash_defweak)
6196 symsec = h->root.u.def.section;
6197 *symsecp = symsec;
6198 }
6199
e7b938ca 6200 if (tls_maskp != NULL)
411e1bfb
AM		 6201 {
6202 struct ppc_link_hash_entry *eh;
6203
6204 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6205 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 6206 }
6207 }
6208 else
6209 {
6210 Elf_Internal_Sym *sym;
6211 Elf_Internal_Sym *locsyms = *locsymsp;
6212
6213 if (locsyms == NULL)
6214 {
6215 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6216 if (locsyms == NULL)
6217 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6218 symtab_hdr->sh_info,
6219 0, NULL, NULL, NULL);
6220 if (locsyms == NULL)
6221 return FALSE;
6222 *locsymsp = locsyms;
6223 }
6224 sym = locsyms + r_symndx;
6225
6226 if (hp != NULL)
6227 *hp = NULL;
6228
6229 if (symp != NULL)
6230 *symp = sym;
6231
6232 if (symsecp != NULL)
cb33740c 6233 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 6234
e7b938ca 6235 if (tls_maskp != NULL)
411e1bfb
AM		 6236 {
6237 struct got_entry **lgot_ents;
e7b938ca 6238 char *tls_mask;
411e1bfb 6239
e7b938ca 6240 tls_mask = NULL;
411e1bfb
AM		 6241 lgot_ents = elf_local_got_ents (ibfd);
6242 if (lgot_ents != NULL)
6243 {
e7b938ca
AM		 6244 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6245 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6246 }
e7b938ca 6247 *tls_maskp = tls_mask;
411e1bfb
AM		 6248 }
6249 }
6250 return TRUE;
6251}
6252
e7b938ca 6253/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6254 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6255 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 6256
6257static int
0d4792f7
AM		 6258get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6259 Elf_Internal_Sym **locsymsp,
4ce794b7 6260 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 6261{
6262 unsigned long r_symndx;
0d4792f7 6263 int next_r;
411e1bfb
AM		 6264 struct elf_link_hash_entry *h;
6265 Elf_Internal_Sym *sym;
6266 asection *sec;
6267 bfd_vma off;
6268
6269 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6270 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6271 return 0;
411e1bfb 6272
e7b938ca 6273 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6274 || sec == NULL
7c8fe5c4 6275 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6276 return 1;
411e1bfb
AM		 6277
6278 /* Look inside a TOC section too. */
6279 if (h != NULL)
6280 {
6281 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6282 off = h->root.u.def.value;
6283 }
6284 else
6285 off = sym->st_value;
6286 off += rel->r_addend;
6287 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM		 6288 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6289 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6290 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6291 return 0;
0d4792f7
AM		 6292 if (toc_symndx != NULL)
6293 *toc_symndx = r_symndx;
6294 if ((h == NULL
6295 || ((h->root.type == bfd_link_hash_defined
6296 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6297 && !h->def_dynamic))
0d4792f7
AM		 6298 && (next_r == -1 || next_r == -2))
6299 return 1 - next_r;
951fd09b 6300 return 1;
411e1bfb
AM		 6301}
6302
754021d0 6303/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6304 code for the old ABI, these will already have been done. */
754021d0
AM		 6305
6306static bfd_boolean
6307adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6308{
6309 struct ppc_link_hash_entry *eh;
6310 asection *sym_sec;
74f0fb50 6311 struct _opd_sec_data *opd;
754021d0
AM		 6312
6313 if (h->root.type == bfd_link_hash_indirect)
6314 return TRUE;
6315
6316 if (h->root.type == bfd_link_hash_warning)
6317 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6318
6319 if (h->root.type != bfd_link_hash_defined
6320 && h->root.type != bfd_link_hash_defweak)
6321 return TRUE;
6322
6323 eh = (struct ppc_link_hash_entry *) h;
6324 if (eh->adjust_done)
6325 return TRUE;
6326
6327 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 6328 opd = get_opd_info (sym_sec);
6329 if (opd != NULL && opd->adjust != NULL)
754021d0 6330 {
74f0fb50 6331 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6332 if (adjust == -1)
6333 {
6334 /* This entry has been deleted. */
b3fac117 6335 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 6336 if (dsec == NULL)
6337 {
6338 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6339 if (elf_discarded_section (dsec))
6340 {
b3fac117 6341 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 6342 break;
6343 }
6344 }
4025353c 6345 eh->elf.root.u.def.value = 0;
81688140 6346 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6347 }
6348 else
6349 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6350 eh->adjust_done = 1;
6351 }
6352 return TRUE;
6353}
6354
8c1d1bb8
AM		 6355/* Handles decrementing dynamic reloc counts for the reloc specified by
6356 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6357 have already been determined. */
6358
6359static bfd_boolean
6360dec_dynrel_count (bfd_vma r_info,
6361 asection *sec,
6362 struct bfd_link_info *info,
6363 Elf_Internal_Sym **local_syms,
6364 struct elf_link_hash_entry *h,
6365 asection *sym_sec)
6366{
6367 enum elf_ppc64_reloc_type r_type;
6368 struct ppc_dyn_relocs *p;
6369 struct ppc_dyn_relocs **pp;
6370
6371 /* Can this reloc be dynamic? This switch, and later tests here
6372 should be kept in sync with the code in check_relocs. */
6373 r_type = ELF64_R_TYPE (r_info);
6374 switch (r_type)
6375 {
6376 default:
6377 return TRUE;
6378
6379 case R_PPC64_TPREL16:
6380 case R_PPC64_TPREL16_LO:
6381 case R_PPC64_TPREL16_HI:
6382 case R_PPC64_TPREL16_HA:
6383 case R_PPC64_TPREL16_DS:
6384 case R_PPC64_TPREL16_LO_DS:
6385 case R_PPC64_TPREL16_HIGHER:
6386 case R_PPC64_TPREL16_HIGHERA:
6387 case R_PPC64_TPREL16_HIGHEST:
6388 case R_PPC64_TPREL16_HIGHESTA:
6389 if (!info->shared)
6390 return TRUE;
6391
6392 case R_PPC64_TPREL64:
6393 case R_PPC64_DTPMOD64:
6394 case R_PPC64_DTPREL64:
6395 case R_PPC64_ADDR64:
6396 case R_PPC64_REL30:
6397 case R_PPC64_REL32:
6398 case R_PPC64_REL64:
6399 case R_PPC64_ADDR14:
6400 case R_PPC64_ADDR14_BRNTAKEN:
6401 case R_PPC64_ADDR14_BRTAKEN:
6402 case R_PPC64_ADDR16:
6403 case R_PPC64_ADDR16_DS:
6404 case R_PPC64_ADDR16_HA:
6405 case R_PPC64_ADDR16_HI:
6406 case R_PPC64_ADDR16_HIGHER:
6407 case R_PPC64_ADDR16_HIGHERA:
6408 case R_PPC64_ADDR16_HIGHEST:
6409 case R_PPC64_ADDR16_HIGHESTA:
6410 case R_PPC64_ADDR16_LO:
6411 case R_PPC64_ADDR16_LO_DS:
6412 case R_PPC64_ADDR24:
6413 case R_PPC64_ADDR32:
6414 case R_PPC64_UADDR16:
6415 case R_PPC64_UADDR32:
6416 case R_PPC64_UADDR64:
6417 case R_PPC64_TOC:
6418 break;
6419 }
6420
6421 if (local_syms != NULL)
6422 {
6423 unsigned long r_symndx;
6424 Elf_Internal_Sym *sym;
6425 bfd *ibfd = sec->owner;
6426
6427 r_symndx = ELF64_R_SYM (r_info);
6428 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6429 return FALSE;
6430 }
6431
6432 if ((info->shared
1d483afe 6433 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8
AM		 6434 || (h != NULL
6435 && (!info->symbolic
6436 || h->root.type == bfd_link_hash_defweak
6437 || !h->def_regular))))
6438 || (ELIMINATE_COPY_RELOCS
6439 && !info->shared
6440 && h != NULL
6441 && (h->root.type == bfd_link_hash_defweak
6442 || !h->def_regular)))
6443 ;
6444 else
6445 return TRUE;
6446
6447 if (h != NULL)
6448 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6449 else
6edfbbad 6450 {
60124e18
AM		 6451 if (sym_sec != NULL)
6452 {
6453 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6454 pp = (struct ppc_dyn_relocs **) vpp;
6455 }
6456 else
6457 {
6458 void *vpp = &elf_section_data (sec)->local_dynrel;
6459 pp = (struct ppc_dyn_relocs **) vpp;
6460 }
6461
6462 /* elf_gc_sweep may have already removed all dyn relocs associated
6463 with local syms for a given section. Don't report a dynreloc
6464 miscount. */
6465 if (*pp == NULL)
6466 return TRUE;
6edfbbad 6467 }
8c1d1bb8
AM		 6468
6469 while ((p = *pp) != NULL)
6470 {
6471 if (p->sec == sec)
6472 {
1d483afe 6473 if (!must_be_dyn_reloc (info, r_type))
8c1d1bb8
AM		 6474 p->pc_count -= 1;
6475 p->count -= 1;
6476 if (p->count == 0)
6477 *pp = p->next;
6478 return TRUE;
6479 }
6480 pp = &p->next;
6481 }
6482
6483 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6484 sec->owner, sec);
6485 bfd_set_error (bfd_error_bad_value);
6486 return FALSE;
6487}
6488
754021d0
AM		 6489/* Remove unused Official Procedure Descriptor entries. Currently we
6490 only remove those associated with functions in discarded link-once
6491 sections, or weakly defined functions that have been overridden. It
6492 would be possible to remove many more entries for statically linked
6493 applications. */
6494
b34976b6 6495bfd_boolean
3f764659
JJ		 6496ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6497 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6498{
6499 bfd *ibfd;
754021d0 6500 bfd_boolean some_edited = FALSE;
3f764659 6501 asection *need_pad = NULL;
1e2f5b6e 6502
411e1bfb 6503 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6504 {
6505 asection *sec;
6506 Elf_Internal_Rela *relstart, *rel, *relend;
6507 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6508 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6509 struct elf_link_hash_entry **sym_hashes;
6510 bfd_vma offset;
74f0fb50 6511 struct _opd_sec_data *opd;
3f764659
JJ		 6512 bfd_boolean need_edit, add_aux_fields;
6513 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6514
6515 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6516 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6517 continue;
6518
4b85d634
AM		 6519 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6520 continue;
6521
1e2f5b6e
AM		 6522 if (sec->output_section == bfd_abs_section_ptr)
6523 continue;
6524
6525 /* Look through the section relocs. */
6526 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6527 continue;
6528
6cdc0ccc 6529 local_syms = NULL;
0ffa91dd 6530 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 6531 sym_hashes = elf_sym_hashes (ibfd);
6532
6533 /* Read the relocations. */
4ce794b7 6534 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6535 info->keep_memory);
1e2f5b6e 6536 if (relstart == NULL)
b34976b6 6537 return FALSE;
1e2f5b6e
AM		 6538
6539 /* First run through the relocs to check they are sane, and to
6540 determine whether we need to edit this opd section. */
b34976b6 6541 need_edit = FALSE;
3f764659 6542 need_pad = sec;
1e2f5b6e
AM		 6543 offset = 0;
6544 relend = relstart + sec->reloc_count;
50bc7936 6545 for (rel = relstart; rel < relend; )
1e2f5b6e 6546 {
04c9666a 6547 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6548 unsigned long r_symndx;
6549 asection *sym_sec;
6550 struct elf_link_hash_entry *h;
6551 Elf_Internal_Sym *sym;
6552
3f764659 6553 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6554 only interested in the reloc pointing to a function entry
6555 point. */
50bc7936
AM		 6556 if (rel->r_offset != offset
6557 || rel + 1 >= relend
6558 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6559 {
6560 /* If someone messes with .opd alignment then after a
6561 "ld -r" we might have padding in the middle of .opd.
6562 Also, there's nothing to prevent someone putting
6563 something silly in .opd with the assembler. No .opd
b34976b6 6564 optimization for them! */
3f764659 6565 broken_opd:
1e2f5b6e 6566 (*_bfd_error_handler)
d003868e 6567 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6568 need_edit = FALSE;
1e2f5b6e
AM		 6569 break;
6570 }
6571
50bc7936
AM		 6572 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6573 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6574 {
6575 (*_bfd_error_handler)
d003868e
AM		 6576 (_("%B: unexpected reloc type %u in .opd section"),
6577 ibfd, r_type);
50bc7936
AM		 6578 need_edit = FALSE;
6579 break;
6580 }
6581
1e2f5b6e 6582 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6583 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6584 r_symndx, ibfd))
50bc7936 6585 goto error_ret;
1e2f5b6e
AM		 6586
6587 if (sym_sec == NULL || sym_sec->owner == NULL)
6588 {
411e1bfb
AM		 6589 const char *sym_name;
6590 if (h != NULL)
6591 sym_name = h->root.root.string;
6592 else
26c61ae5
L		 6593 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6594 sym_sec);
411e1bfb 6595
1e2f5b6e 6596 (*_bfd_error_handler)
d003868e
AM		 6597 (_("%B: undefined sym `%s' in .opd section"),
6598 ibfd, sym_name);
b34976b6 6599 need_edit = FALSE;
1e2f5b6e
AM		 6600 break;
6601 }
6602
51020317
AM		 6603 /* opd entries are always for functions defined in the
6604 current input bfd. If the symbol isn't defined in the
6605 input bfd, then we won't be using the function in this
6606 bfd; It must be defined in a linkonce section in another
6607 bfd, or is weak. It's also possible that we are
6608 discarding the function due to a linker script /DISCARD/,
6609 which we test for via the output_section. */
6610 if (sym_sec->owner != ibfd
6611 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6612 need_edit = TRUE;
1e2f5b6e 6613
50bc7936 6614 rel += 2;
3f764659
JJ		 6615 if (rel == relend
6616 || (rel + 1 == relend && rel->r_offset == offset + 16))
6617 {
6618 if (sec->size == offset + 24)
6619 {
6620 need_pad = NULL;
6621 break;
6622 }
6623 if (rel == relend && sec->size == offset + 16)
6624 {
6625 cnt_16b++;
6626 break;
6627 }
6628 goto broken_opd;
6629 }
6630
6631 if (rel->r_offset == offset + 24)
6632 offset += 24;
6633 else if (rel->r_offset != offset + 16)
6634 goto broken_opd;
6635 else if (rel + 1 < relend
6636 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6637 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6638 {
6639 offset += 16;
6640 cnt_16b++;
6641 }
6642 else if (rel + 2 < relend
6643 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6644 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6645 {
6646 offset += 24;
6647 rel += 1;
6648 }
6649 else
6650 goto broken_opd;
1e2f5b6e
AM		 6651 }
6652
3f764659
JJ		 6653 add_aux_fields = non_overlapping && cnt_16b > 0;
6654
6655 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6656 {
6657 Elf_Internal_Rela *write_rel;
6658 bfd_byte *rptr, *wptr;
3f764659 6659 bfd_byte *new_contents = NULL;
b34976b6 6660 bfd_boolean skip;
3f764659 6661 long opd_ent_size;
74f0fb50
AM		 6662 bfd_size_type amt;
6663
6664 amt = sec->size * sizeof (long) / 8;
6665 opd = &ppc64_elf_section_data (sec)->u.opd;
6666 opd->adjust = bfd_zalloc (obfd, amt);
6667 if (opd->adjust == NULL)
6668 return FALSE;
6669 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 6670
6671 /* This seems a waste of time as input .opd sections are all
6672 zeros as generated by gcc, but I suppose there's no reason
6673 this will always be so. We might start putting something in
6674 the third word of .opd entries. */
6675 if ((sec->flags & SEC_IN_MEMORY) == 0)
6676 {
eea6121a
AM		 6677 bfd_byte *loc;
6678 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6679 {
eea6121a
AM		 6680 if (loc != NULL)
6681 free (loc);
50bc7936 6682 error_ret:
6cdc0ccc
AM		 6683 if (local_syms != NULL
6684 && symtab_hdr->contents != (unsigned char *) local_syms)
6685 free (local_syms);
6cdc0ccc
AM		 6686 if (elf_section_data (sec)->relocs != relstart)
6687 free (relstart);
b34976b6 6688 return FALSE;
6cdc0ccc 6689 }
1e2f5b6e
AM		 6690 sec->contents = loc;
6691 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6692 }
6693
6694 elf_section_data (sec)->relocs = relstart;
6695
3f764659 6696 new_contents = sec->contents;
3f764659
JJ		 6697 if (add_aux_fields)
6698 {
6699 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6700 if (new_contents == NULL)
6701 return FALSE;
6702 need_pad = FALSE;
3f764659 6703 }
b4f4e59f
AM		 6704 wptr = new_contents;
6705 rptr = sec->contents;
3f764659 6706
1e2f5b6e 6707 write_rel = relstart;
b34976b6 6708 skip = FALSE;
1e2f5b6e 6709 offset = 0;
3f764659 6710 opd_ent_size = 0;
1e2f5b6e
AM		 6711 for (rel = relstart; rel < relend; rel++)
6712 {
50bc7936
AM		 6713 unsigned long r_symndx;
6714 asection *sym_sec;
6715 struct elf_link_hash_entry *h;
6716 Elf_Internal_Sym *sym;
6717
6718 r_symndx = ELF64_R_SYM (rel->r_info);
6719 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6720 r_symndx, ibfd))
50bc7936
AM		 6721 goto error_ret;
6722
1e2f5b6e
AM		 6723 if (rel->r_offset == offset)
6724 {
50bc7936 6725 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6726
6727 /* See if the .opd entry is full 24 byte or
6728 16 byte (with fd_aux entry overlapped with next
6729 fd_func). */
6730 opd_ent_size = 24;
6731 if ((rel + 2 == relend && sec->size == offset + 16)
6732 || (rel + 3 < relend
6733 && rel[2].r_offset == offset + 16
6734 && rel[3].r_offset == offset + 24
6735 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6736 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6737 opd_ent_size = 16;
6738
4025353c
AM		 6739 if (h != NULL
6740 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6741 {
6742 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6743 ppc_hash_table (info));
6744 if (fdh != NULL
6745 && fdh->elf.root.type != bfd_link_hash_defined
6746 && fdh->elf.root.type != bfd_link_hash_defweak)
6747 fdh = NULL;
6748 }
1e2f5b6e 6749
51020317
AM		 6750 skip = (sym_sec->owner != ibfd
6751 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6752 if (skip)
6753 {
4025353c 6754 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6755 {
6756 /* Arrange for the function descriptor sym
6757 to be dropped. */
d6fe2dc1
AM		 6758 fdh->elf.root.u.def.value = 0;
6759 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6760 }
74f0fb50 6761 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6762 }
6763 else
1e2f5b6e
AM		 6764 {
6765 /* We'll be keeping this opd entry. */
6766
4025353c 6767 if (fdh != NULL)
1e2f5b6e 6768 {
754021d0
AM		 6769 /* Redefine the function descriptor symbol to
6770 this location in the opd section. It is
6771 necessary to update the value here rather
6772 than using an array of adjustments as we do
6773 for local symbols, because various places
6774 in the generic ELF code use the value
6775 stored in u.def.value. */
3f764659 6776 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6777 fdh->adjust_done = 1;
1e2f5b6e 6778 }
754021d0
AM		 6779
6780 /* Local syms are a bit tricky. We could
6781 tweak them as they can be cached, but
6782 we'd need to look through the local syms
6783 for the function descriptor sym which we
6784 don't have at the moment. So keep an
6785 array of adjustments. */
74f0fb50 6786 opd->adjust[rel->r_offset / 8]
3f764659 6787 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6788
6789 if (wptr != rptr)
3f764659
JJ		 6790 memcpy (wptr, rptr, opd_ent_size);
6791 wptr += opd_ent_size;
6792 if (add_aux_fields && opd_ent_size == 16)
6793 {
6794 memset (wptr, '\0', 8);
6795 wptr += 8;
6796 }
1e2f5b6e 6797 }
3f764659
JJ		 6798 rptr += opd_ent_size;
6799 offset += opd_ent_size;
1e2f5b6e
AM		 6800 }
6801
50bc7936
AM		 6802 if (skip)
6803 {
60124e18
AM		 6804 if (!NO_OPD_RELOCS
6805 && !info->relocatable
18d944df
AM		 6806 && !dec_dynrel_count (rel->r_info, sec, info,
6807 NULL, h, sym_sec))
8c1d1bb8 6808 goto error_ret;
50bc7936
AM		 6809 }
6810 else
1e2f5b6e 6811 {
50bc7936
AM		 6812 /* We need to adjust any reloc offsets to point to the
6813 new opd entries. While we're at it, we may as well
6814 remove redundant relocs. */
74f0fb50 6815 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6816 if (write_rel != rel)
6817 memcpy (write_rel, rel, sizeof (*rel));
6818 ++write_rel;
6819 }
6820 }
6821
3f764659 6822 sec->size = wptr - new_contents;
1e2f5b6e 6823 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6824 if (add_aux_fields)
6825 {
6826 free (sec->contents);
6827 sec->contents = new_contents;
6828 }
6829
05bf9422 6830 /* Fudge the header size too, as this is used later in
cdcf6e38
AM		 6831 elf_bfd_final_link if we are emitting relocs. */
6832 elf_section_data (sec)->rel_hdr.sh_size
6833 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6834 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6835 some_edited = TRUE;
1e2f5b6e 6836 }
6cdc0ccc 6837 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6838 free (relstart);
6cdc0ccc 6839
411e1bfb
AM		 6840 if (local_syms != NULL
6841 && symtab_hdr->contents != (unsigned char *) local_syms)
6842 {
6843 if (!info->keep_memory)
6844 free (local_syms);
6845 else
6846 symtab_hdr->contents = (unsigned char *) local_syms;
6847 }
6848 }
6849
754021d0
AM		 6850 if (some_edited)
6851 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6852
3f764659
JJ		 6853 /* If we are doing a final link and the last .opd entry is just 16 byte
6854 long, add a 8 byte padding after it. */
6855 if (need_pad != NULL && !info->relocatable)
6856 {
6857 bfd_byte *p;
6858
6859 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6860 {
6861 BFD_ASSERT (need_pad->size > 0);
6862
6863 p = bfd_malloc (need_pad->size + 8);
6864 if (p == NULL)
6865 return FALSE;
699733f6 6866
3f764659
JJ		 6867 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6868 p, 0, need_pad->size))
6869 return FALSE;
6870
6871 need_pad->contents = p;
6872 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6873 }
6874 else
6875 {
6876 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6877 if (p == NULL)
6878 return FALSE;
6879
6880 need_pad->contents = p;
6881 }
6882
6883 memset (need_pad->contents + need_pad->size, 0, 8);
6884 need_pad->size += 8;
6885 }
6886
411e1bfb
AM		 6887 return TRUE;
6888}
6889
e1918d23 6890/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6891
e1918d23 6892asection *
4ce794b7 6893ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6894{
411e1bfb
AM		 6895 struct ppc_link_hash_table *htab;
6896
411e1bfb 6897 htab = ppc_hash_table (info);
a48ebf4d
AM		 6898 if (htab->tls_get_addr != NULL)
6899 {
8387904d 6900 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6901
8387904d
AM		 6902 while (h->elf.root.type == bfd_link_hash_indirect
6903 || h->elf.root.type == bfd_link_hash_warning)
6904 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6905
6906 htab->tls_get_addr = h;
8387904d
AM		 6907
6908 if (htab->tls_get_addr_fd == NULL
6909 && h->oh != NULL
c4f68ce3
AM		 6910 && h->oh->is_func_descriptor
6911 && (h->oh->elf.root.type == bfd_link_hash_defined
6912 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6913 htab->tls_get_addr_fd = h->oh;
6914 }
6915
6916 if (htab->tls_get_addr_fd != NULL)
6917 {
6918 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6919
6920 while (h->elf.root.type == bfd_link_hash_indirect
6921 || h->elf.root.type == bfd_link_hash_warning)
6922 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6923
6924 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6925 }
6926
e1918d23 6927 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6928}
411e1bfb 6929
951fd09b
AM		 6930/* Run through all the TLS relocs looking for optimization
6931 opportunities. The linker has been hacked (see ppc64elf.em) to do
6932 a preliminary section layout so that we know the TLS segment
6933 offsets. We can't optimize earlier because some optimizations need
6934 to know the tp offset, and we need to optimize before allocating
6935 dynamic relocations. */
6936
6937bfd_boolean
4ce794b7 6938ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6939{
6940 bfd *ibfd;
6941 asection *sec;
6942 struct ppc_link_hash_table *htab;
102890f0 6943 int pass;
951fd09b 6944
1d483afe 6945 if (info->relocatable || !info->executable)
411e1bfb
AM		 6946 return TRUE;
6947
951fd09b 6948 htab = ppc_hash_table (info);
411e1bfb
AM		 6949 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6950 {
6951 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM		 6952 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6953 unsigned char *toc_ref = NULL;
411e1bfb 6954
102890f0
AM		 6955 /* Look at all the sections for this file. Make two passes over
6956 the relocs. On the first pass, mark toc entries involved
6957 with tls relocs, and check that tls relocs involved in
6958 setting up a tls_get_addr call are indeed followed by such a
6959 call. If they are not, exclude them from the optimizations
6960 done on the second pass. */
6961 for (pass = 0; pass < 2; ++pass)
6962 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6963 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6964 {
6965 Elf_Internal_Rela *relstart, *rel, *relend;
411e1bfb 6966
102890f0
AM		 6967 /* Read the relocations. */
6968 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6969 info->keep_memory);
6970 if (relstart == NULL)
6971 return FALSE;
411e1bfb 6972
102890f0
AM		 6973 relend = relstart + sec->reloc_count;
6974 for (rel = relstart; rel < relend; rel++)
6975 {
6976 enum elf_ppc64_reloc_type r_type;
6977 unsigned long r_symndx;
6978 struct elf_link_hash_entry *h;
6979 Elf_Internal_Sym *sym;
6980 asection *sym_sec;
6981 char *tls_mask;
6982 char tls_set, tls_clear, tls_type = 0;
6983 bfd_vma value;
6984 bfd_boolean ok_tprel, is_local;
6985 long toc_ref_index = 0;
6986 int expecting_tls_get_addr = 0;
411e1bfb 6987
102890f0
AM		 6988 r_symndx = ELF64_R_SYM (rel->r_info);
6989 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6990 r_symndx, ibfd))
6991 {
6992 err_free_rel:
6993 if (elf_section_data (sec)->relocs != relstart)
6994 free (relstart);
6995 if (toc_ref != NULL)
6996 free (toc_ref);
6997 if (locsyms != NULL
0ffa91dd 6998 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 6999 != (unsigned char *) locsyms))
7000 free (locsyms);
7001 return FALSE;
7002 }
411e1bfb 7003
102890f0
AM		 7004 if (h != NULL)
7005 {
7006 if (h->root.type != bfd_link_hash_defined
7007 && h->root.type != bfd_link_hash_defweak)
7008 continue;
7009 value = h->root.u.def.value;
7010 }
7011 else
7012 /* Symbols referenced by TLS relocs must be of type
7013 STT_TLS. So no need for .opd local sym adjust. */
7014 value = sym->st_value;
7015
7016 ok_tprel = FALSE;
7017 is_local = FALSE;
7018 if (h == NULL
7019 || !h->def_dynamic)
7020 {
7021 is_local = TRUE;
7022 value += sym_sec->output_offset;
7023 value += sym_sec->output_section->vma;
7024 value -= htab->elf.tls_sec->vma;
7025 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7026 < (bfd_vma) 1 << 32);
7027 }
951fd09b 7028
102890f0
AM		 7029 r_type = ELF64_R_TYPE (rel->r_info);
7030 switch (r_type)
7031 {
7032 case R_PPC64_GOT_TLSLD16:
7033 case R_PPC64_GOT_TLSLD16_LO:
7034 expecting_tls_get_addr = 1;
7035 /* Fall thru */
7036
7037 case R_PPC64_GOT_TLSLD16_HI:
7038 case R_PPC64_GOT_TLSLD16_HA:
7039 /* These relocs should never be against a symbol
7040 defined in a shared lib. Leave them alone if
7041 that turns out to be the case. */
7042 if (!is_local)
7043 continue;
411e1bfb 7044
102890f0 7045 /* LD -> LE */
411e1bfb 7046 tls_set = 0;
102890f0
AM		 7047 tls_clear = TLS_LD;
7048 tls_type = TLS_TLS | TLS_LD;
7049 break;
411e1bfb 7050
102890f0
AM		 7051 case R_PPC64_GOT_TLSGD16:
7052 case R_PPC64_GOT_TLSGD16_LO:
7053 expecting_tls_get_addr = 1;
7054 /* Fall thru */
7055
7056 case R_PPC64_GOT_TLSGD16_HI:
7057 case R_PPC64_GOT_TLSGD16_HA:
7058 if (ok_tprel)
7059 /* GD -> LE */
411e1bfb 7060 tls_set = 0;
102890f0
AM		 7061 else
7062 /* GD -> IE */
7063 tls_set = TLS_TLS | TLS_TPRELGD;
7064 tls_clear = TLS_GD;
7065 tls_type = TLS_TLS | TLS_GD;
7066 break;
7067
7068 case R_PPC64_GOT_TPREL16_DS:
7069 case R_PPC64_GOT_TPREL16_LO_DS:
7070 case R_PPC64_GOT_TPREL16_HI:
7071 case R_PPC64_GOT_TPREL16_HA:
7072 if (ok_tprel)
7073 {
7074 /* IE -> LE */
7075 tls_set = 0;
7076 tls_clear = TLS_TPREL;
7077 tls_type = TLS_TLS | TLS_TPREL;
7078 break;
7079 }
411e1bfb
AM		 7080 continue;
7081
102890f0
AM		 7082 case R_PPC64_TOC16:
7083 case R_PPC64_TOC16_LO:
7084 case R_PPC64_TLS:
7085 if (sym_sec == NULL || sym_sec != toc)
7086 continue;
7087
7088 /* Mark this toc entry as referenced by a TLS
7089 code sequence. We can do that now in the
7090 case of R_PPC64_TLS, and after checking for
7091 tls_get_addr for the TOC16 relocs. */
7092 if (toc_ref == NULL)
7093 {
7094 toc_ref = bfd_zmalloc (toc->size / 8);
7095 if (toc_ref == NULL)
7096 goto err_free_rel;
7097 }
7098 if (h != NULL)
7099 value = h->root.u.def.value;
7100 else
7101 value = sym->st_value;
7102 value += rel->r_addend;
7103 BFD_ASSERT (value < toc->size && value % 8 == 0);
7104 toc_ref_index = value / 8;
7105 if (r_type == R_PPC64_TLS)
7106 {
7107 toc_ref[toc_ref_index] = 1;
7108 continue;
7109 }
7110
7111 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7112 continue;
7113
7114 tls_set = 0;
7115 tls_clear = 0;
7116 expecting_tls_get_addr = 2;
7117 break;
7118
7119 case R_PPC64_TPREL64:
7120 if (pass == 0
7121 || sec != toc
7122 || toc_ref == NULL
7123 || !toc_ref[rel->r_offset / 8])
7124 continue;
7125 if (ok_tprel)
7126 {
7127 /* IE -> LE */
7128 tls_set = TLS_EXPLICIT;
7129 tls_clear = TLS_TPREL;
7130 break;
7131 }
7132 continue;
7133
7134 case R_PPC64_DTPMOD64:
7135 if (pass == 0
7136 || sec != toc
7137 || toc_ref == NULL
7138 || !toc_ref[rel->r_offset / 8])
7139 continue;
7140 if (rel + 1 < relend
7141 && (rel[1].r_info
7142 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7143 && rel[1].r_offset == rel->r_offset + 8)
7144 {
7145 if (ok_tprel)
7146 /* GD -> LE */
7147 tls_set = TLS_EXPLICIT | TLS_GD;
7148 else
7149 /* GD -> IE */
7150 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7151 tls_clear = TLS_GD;
7152 }
7153 else
7154 {
7155 if (!is_local)
7156 continue;
7157
7158 /* LD -> LE */
7159 tls_set = TLS_EXPLICIT;
7160 tls_clear = TLS_LD;
7161 }
7162 break;
7163
7164 default:
7165 continue;
7166 }
7167
7168 if (pass == 0)
7169 {
7170 if (!expecting_tls_get_addr)
7171 continue;
7172
7173 if (rel + 1 < relend)
7174 {
7175 Elf_Internal_Shdr *symtab_hdr;
7176 enum elf_ppc64_reloc_type r_type2;
7177 unsigned long r_symndx2;
7178 struct elf_link_hash_entry *h2;
7179
0ffa91dd 7180 symtab_hdr = &elf_symtab_hdr (ibfd);
102890f0
AM		 7181
7182 /* The next instruction should be a call to
7183 __tls_get_addr. Peek at the reloc to be sure. */
7184 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7185 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7186 if (r_symndx2 >= symtab_hdr->sh_info
7187 && (r_type2 == R_PPC64_REL14
7188 || r_type2 == R_PPC64_REL14_BRTAKEN
7189 || r_type2 == R_PPC64_REL14_BRNTAKEN
7190 || r_type2 == R_PPC64_REL24))
7191 {
7192 struct elf_link_hash_entry **sym_hashes;
7193
7194 sym_hashes = elf_sym_hashes (ibfd);
7195
7196 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7197 while (h2->root.type == bfd_link_hash_indirect
7198 || h2->root.type == bfd_link_hash_warning)
7199 h2 = ((struct elf_link_hash_entry *)
7200 h2->root.u.i.link);
7201 if (h2 != NULL
7202 && (h2 == &htab->tls_get_addr->elf
7203 || h2 == &htab->tls_get_addr_fd->elf))
7204 {
7205 if (expecting_tls_get_addr == 2)
7206 {
7207 /* Check for toc tls entries. */
7208 char *toc_tls;
7209 int retval;
7210
7211 retval = get_tls_mask (&toc_tls, NULL,
7212 &locsyms,
7213 rel, ibfd);
7214 if (retval == 0)
7215 goto err_free_rel;
7216 if (retval > 1 && toc_tls != NULL)
7217 toc_ref[toc_ref_index] = 1;
7218 }
7219 continue;
7220 }
7221 }
7222 }
7223
7224 if (expecting_tls_get_addr != 1)
7225 continue;
7226
7227 /* Uh oh, we didn't find the expected call. We
7228 could just mark this symbol to exclude it
7229 from tls optimization but it's safer to skip
7230 the entire section. */
7231 sec->has_tls_reloc = 0;
7232 break;
7233 }
7234
85f7a9cb 7235 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 7236 {
7237 struct plt_entry *ent;
7238 for (ent = htab->tls_get_addr->elf.plt.plist;
7239 ent != NULL;
7240 ent = ent->next)
7241 if (ent->addend == 0)
411e1bfb 7242 {
102890f0 7243 if (ent->plt.refcount > 0)
30038c59 7244 {
102890f0
AM		 7245 ent->plt.refcount -= 1;
7246 expecting_tls_get_addr = 0;
30038c59 7247 }
102890f0 7248 break;
411e1bfb 7249 }
102890f0 7250 }
411e1bfb 7251
85f7a9cb 7252 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 7253 {
7254 struct plt_entry *ent;
7255 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7256 ent != NULL;
7257 ent = ent->next)
7258 if (ent->addend == 0)
411e1bfb 7259 {
102890f0
AM		 7260 if (ent->plt.refcount > 0)
7261 ent->plt.refcount -= 1;
7262 break;
411e1bfb 7263 }
102890f0 7264 }
411e1bfb 7265
102890f0 7266 if (tls_clear == 0)
30038c59
AM		 7267 continue;
7268
102890f0
AM		 7269 if ((tls_set & TLS_EXPLICIT) == 0)
7270 {
7271 struct got_entry *ent;
411e1bfb 7272
102890f0
AM		 7273 /* Adjust got entry for this reloc. */
7274 if (h != NULL)
7275 ent = h->got.glist;
7276 else
7277 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7278
102890f0
AM		 7279 for (; ent != NULL; ent = ent->next)
7280 if (ent->addend == rel->r_addend
7281 && ent->owner == ibfd
7282 && ent->tls_type == tls_type)
7283 break;
7284 if (ent == NULL)
7285 abort ();
411e1bfb 7286
102890f0
AM		 7287 if (tls_set == 0)
7288 {
7289 /* We managed to get rid of a got entry. */
7290 if (ent->got.refcount > 0)
7291 ent->got.refcount -= 1;
7292 }
7293 }
7294 else
7295 {
7296 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7297 we'll lose one or two dyn relocs. */
7298 if (!dec_dynrel_count (rel->r_info, sec, info,
7299 NULL, h, sym_sec))
7300 return FALSE;
411e1bfb 7301
102890f0
AM		 7302 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7303 {
7304 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7305 NULL, h, sym_sec))
7306 return FALSE;
7307 }
7308 }
411e1bfb 7309
102890f0
AM		 7310 *tls_mask |= tls_set;
7311 *tls_mask &= ~tls_clear;
7312 }
8c1d1bb8 7313
102890f0
AM		 7314 if (elf_section_data (sec)->relocs != relstart)
7315 free (relstart);
7316 }
411e1bfb 7317
102890f0
AM		 7318 if (toc_ref != NULL)
7319 free (toc_ref);
411e1bfb 7320
102890f0 7321 if (locsyms != NULL
0ffa91dd 7322 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
102890f0
AM		 7323 {
7324 if (!info->keep_memory)
7325 free (locsyms);
7326 else
0ffa91dd 7327 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
411e1bfb 7328 }
102890f0 7329 }
b34976b6 7330 return TRUE;
1e2f5b6e 7331}
b34976b6 7332
c5614fa4
AM		 7333/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7334 the values of any global symbols in a toc section that has been
7335 edited. Globals in toc sections should be a rarity, so this function
7336 sets a flag if any are found in toc sections other than the one just
7337 edited, so that futher hash table traversals can be avoided. */
7338
7339struct adjust_toc_info
7340{
7341 asection *toc;
7342 unsigned long *skip;
7343 bfd_boolean global_toc_syms;
7344};
7345
7346static bfd_boolean
7347adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7348{
7349 struct ppc_link_hash_entry *eh;
7350 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7351
7352 if (h->root.type == bfd_link_hash_indirect)
7353 return TRUE;
7354
7355 if (h->root.type == bfd_link_hash_warning)
7356 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7357
7358 if (h->root.type != bfd_link_hash_defined
7359 && h->root.type != bfd_link_hash_defweak)
7360 return TRUE;
7361
7362 eh = (struct ppc_link_hash_entry *) h;
7363 if (eh->adjust_done)
7364 return TRUE;
7365
7366 if (eh->elf.root.u.def.section == toc_inf->toc)
7367 {
7368 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7369 if (skip != (unsigned long) -1)
7370 eh->elf.root.u.def.value -= skip;
7371 else
7372 {
7373 (*_bfd_error_handler)
7374 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7375 eh->elf.root.u.def.section = &bfd_abs_section;
7376 eh->elf.root.u.def.value = 0;
7377 }
7378 eh->adjust_done = 1;
7379 }
7380 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7381 toc_inf->global_toc_syms = TRUE;
7382
7383 return TRUE;
7384}
7385
7386/* Examine all relocs referencing .toc sections in order to remove
7387 unused .toc entries. */
7388
7389bfd_boolean
7390ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7391{
7392 bfd *ibfd;
7393 struct adjust_toc_info toc_inf;
7394
7395 toc_inf.global_toc_syms = TRUE;
7396 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7397 {
7398 asection *toc, *sec;
7399 Elf_Internal_Shdr *symtab_hdr;
7400 Elf_Internal_Sym *local_syms;
7401 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7402 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 7403 unsigned long *skip, *drop;
7404 unsigned char *used;
7405 unsigned char *keep, last, some_unused;
7406
7407 toc = bfd_get_section_by_name (ibfd, ".toc");
7408 if (toc == NULL
92b7a70f 7409 || toc->size == 0
c5614fa4
AM		 7410 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7411 || elf_discarded_section (toc))
7412 continue;
7413
7414 local_syms = NULL;
0ffa91dd 7415 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 7416 sym_hashes = elf_sym_hashes (ibfd);
7417
7418 /* Look at sections dropped from the final link. */
7419 skip = NULL;
7420 relstart = NULL;
7421 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7422 {
7423 if (sec->reloc_count == 0
7424 || !elf_discarded_section (sec)
7425 || get_opd_info (sec)
7426 || (sec->flags & SEC_ALLOC) == 0
7427 || (sec->flags & SEC_DEBUGGING) != 0)
7428 continue;
7429
7430 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7431 if (relstart == NULL)
7432 goto error_ret;
7433
7434 /* Run through the relocs to see which toc entries might be
7435 unused. */
7436 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7437 {
7438 enum elf_ppc64_reloc_type r_type;
7439 unsigned long r_symndx;
7440 asection *sym_sec;
7441 struct elf_link_hash_entry *h;
7442 Elf_Internal_Sym *sym;
7443 bfd_vma val;
7444
7445 r_type = ELF64_R_TYPE (rel->r_info);
7446 switch (r_type)
7447 {
7448 default:
7449 continue;
7450
7451 case R_PPC64_TOC16:
7452 case R_PPC64_TOC16_LO:
7453 case R_PPC64_TOC16_HI:
7454 case R_PPC64_TOC16_HA:
7455 case R_PPC64_TOC16_DS:
7456 case R_PPC64_TOC16_LO_DS:
7457 break;
7458 }
7459
7460 r_symndx = ELF64_R_SYM (rel->r_info);
7461 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7462 r_symndx, ibfd))
7463 goto error_ret;
7464
7465 if (sym_sec != toc)
7466 continue;
7467
7468 if (h != NULL)
7469 val = h->root.u.def.value;
7470 else
7471 val = sym->st_value;
7472 val += rel->r_addend;
7473
7474 if (val >= toc->size)
7475 continue;
7476
7477 /* Anything in the toc ought to be aligned to 8 bytes.
7478 If not, don't mark as unused. */
7479 if (val & 7)
7480 continue;
7481
7482 if (skip == NULL)
7483 {
7484 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7485 if (skip == NULL)
7486 goto error_ret;
7487 }
7488
7489 skip[val >> 3] = 1;
7490 }
7491
7492 if (elf_section_data (sec)->relocs != relstart)
7493 free (relstart);
7494 }
7495
7496 if (skip == NULL)
7497 continue;
7498
7499 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7500 if (used == NULL)
7501 {
7502 error_ret:
7503 if (local_syms != NULL
7504 && symtab_hdr->contents != (unsigned char *) local_syms)
7505 free (local_syms);
7506 if (sec != NULL
7507 && relstart != NULL
7508 && elf_section_data (sec)->relocs != relstart)
7509 free (relstart);
7510 if (skip != NULL)
7511 free (skip);
7512 return FALSE;
7513 }
7514
30038c59
AM		 7515 /* Now check all kept sections that might reference the toc.
7516 Check the toc itself last. */
7517 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7518 : ibfd->sections);
c5614fa4 7519 sec != NULL;
c5614fa4 7520 sec = (sec == toc ? NULL
c5614fa4 7521 : sec->next == NULL ? toc
30038c59 7522 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 7523 : sec->next))
7524 {
7525 int repeat;
7526
7527 if (sec->reloc_count == 0
7528 || elf_discarded_section (sec)
7529 || get_opd_info (sec)
7530 || (sec->flags & SEC_ALLOC) == 0
7531 || (sec->flags & SEC_DEBUGGING) != 0)
7532 continue;
7533
7534 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7535 if (relstart == NULL)
7536 goto error_ret;
7537
7538 /* Mark toc entries referenced as used. */
7539 repeat = 0;
7540 do
7541 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7542 {
7543 enum elf_ppc64_reloc_type r_type;
7544 unsigned long r_symndx;
7545 asection *sym_sec;
7546 struct elf_link_hash_entry *h;
7547 Elf_Internal_Sym *sym;
7548 bfd_vma val;
7549
7550 r_type = ELF64_R_TYPE (rel->r_info);
7551 switch (r_type)
7552 {
7553 case R_PPC64_TOC16:
7554 case R_PPC64_TOC16_LO:
7555 case R_PPC64_TOC16_HI:
7556 case R_PPC64_TOC16_HA:
7557 case R_PPC64_TOC16_DS:
7558 case R_PPC64_TOC16_LO_DS:
7559 /* In case we're taking addresses of toc entries. */
7560 case R_PPC64_ADDR64:
7561 break;
7562
7563 default:
7564 continue;
7565 }
7566
7567 r_symndx = ELF64_R_SYM (rel->r_info);
7568 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7569 r_symndx, ibfd))
7570 {
7571 free (used);
7572 goto error_ret;
7573 }
7574
7575 if (sym_sec != toc)
7576 continue;
7577
7578 if (h != NULL)
7579 val = h->root.u.def.value;
7580 else
7581 val = sym->st_value;
7582 val += rel->r_addend;
7583
7584 if (val >= toc->size)
7585 continue;
7586
7587 /* For the toc section, we only mark as used if
7588 this entry itself isn't unused. */
7589 if (sec == toc
7590 && !used[val >> 3]
7591 && (used[rel->r_offset >> 3]
7592 || !skip[rel->r_offset >> 3]))
7593 /* Do all the relocs again, to catch reference
7594 chains. */
7595 repeat = 1;
7596
7597 used[val >> 3] = 1;
7598 }
7599 while (repeat);
7600 }
7601
7602 /* Merge the used and skip arrays. Assume that TOC
7603 doublewords not appearing as either used or unused belong
7604 to to an entry more than one doubleword in size. */
7605 for (drop = skip, keep = used, last = 0, some_unused = 0;
7606 drop < skip + (toc->size + 7) / 8;
7607 ++drop, ++keep)
7608 {
7609 if (*keep)
7610 {
7611 *drop = 0;
7612 last = 0;
7613 }
7614 else if (*drop)
7615 {
7616 some_unused = 1;
7617 last = 1;
7618 }
7619 else
7620 *drop = last;
7621 }
7622
7623 free (used);
7624
7625 if (some_unused)
7626 {
7627 bfd_byte *contents, *src;
7628 unsigned long off;
7629
7630 /* Shuffle the toc contents, and at the same time convert the
7631 skip array from booleans into offsets. */
7632 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7633 goto error_ret;
7634
7635 elf_section_data (toc)->this_hdr.contents = contents;
7636
7637 for (src = contents, off = 0, drop = skip;
7638 src < contents + toc->size;
7639 src += 8, ++drop)
7640 {
7641 if (*drop)
7642 {
7643 *drop = (unsigned long) -1;
7644 off += 8;
7645 }
7646 else if (off != 0)
7647 {
7648 *drop = off;
7649 memcpy (src - off, src, 8);
7650 }
7651 }
7652 toc->rawsize = toc->size;
7653 toc->size = src - contents - off;
7654
92b7a70f
AM		 7655 if (toc->reloc_count != 0)
7656 {
7657 Elf_Internal_Rela *wrel;
7658 bfd_size_type sz;
c5614fa4 7659
92b7a70f
AM		 7660 /* Read toc relocs. */
7661 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7662 TRUE);
7663 if (relstart == NULL)
7664 goto error_ret;
7665
7666 /* Remove unused toc relocs, and adjust those we keep. */
7667 wrel = relstart;
7668 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7669 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7670 {
7671 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7672 wrel->r_info = rel->r_info;
7673 wrel->r_addend = rel->r_addend;
7674 ++wrel;
7675 }
8c1d1bb8
AM		 7676 else if (!dec_dynrel_count (rel->r_info, toc, info,
7677 &local_syms, NULL, NULL))
7678 goto error_ret;
35090471 7679
92b7a70f
AM		 7680 toc->reloc_count = wrel - relstart;
7681 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7682 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7683 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7684 }
c5614fa4
AM		 7685
7686 /* Adjust addends for relocs against the toc section sym. */
7687 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7688 {
7689 if (sec->reloc_count == 0
7690 || elf_discarded_section (sec))
7691 continue;
7692
7693 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7694 TRUE);
7695 if (relstart == NULL)
7696 goto error_ret;
7697
7698 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7699 {
7700 enum elf_ppc64_reloc_type r_type;
7701 unsigned long r_symndx;
7702 asection *sym_sec;
7703 struct elf_link_hash_entry *h;
7704 Elf_Internal_Sym *sym;
7705
7706 r_type = ELF64_R_TYPE (rel->r_info);
7707 switch (r_type)
7708 {
7709 default:
7710 continue;
7711
7712 case R_PPC64_TOC16:
7713 case R_PPC64_TOC16_LO:
7714 case R_PPC64_TOC16_HI:
7715 case R_PPC64_TOC16_HA:
7716 case R_PPC64_TOC16_DS:
7717 case R_PPC64_TOC16_LO_DS:
7718 case R_PPC64_ADDR64:
7719 break;
7720 }
7721
7722 r_symndx = ELF64_R_SYM (rel->r_info);
7723 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7724 r_symndx, ibfd))
7725 goto error_ret;
7726
7727 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7728 continue;
7729
7730 rel->r_addend -= skip[rel->r_addend >> 3];
7731 }
7732 }
7733
7734 /* We shouldn't have local or global symbols defined in the TOC,
7735 but handle them anyway. */
7736 if (local_syms != NULL)
7737 {
7738 Elf_Internal_Sym *sym;
7739
7740 for (sym = local_syms;
7741 sym < local_syms + symtab_hdr->sh_info;
7742 ++sym)
cb33740c 7743 if (sym->st_value != 0
c5614fa4
AM		 7744 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7745 {
7746 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7747 sym->st_value -= skip[sym->st_value >> 3];
7748 else
7749 {
7750 (*_bfd_error_handler)
7751 (_("%s defined in removed toc entry"),
26c61ae5
L		 7752 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7753 NULL));
c5614fa4
AM		 7754 sym->st_value = 0;
7755 sym->st_shndx = SHN_ABS;
7756 }
7757 symtab_hdr->contents = (unsigned char *) local_syms;
7758 }
7759 }
7760
7761 /* Finally, adjust any global syms defined in the toc. */
7762 if (toc_inf.global_toc_syms)
7763 {
7764 toc_inf.toc = toc;
7765 toc_inf.skip = skip;
7766 toc_inf.global_toc_syms = FALSE;
7767 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7768 &toc_inf);
7769 }
7770 }
7771
7772 if (local_syms != NULL
7773 && symtab_hdr->contents != (unsigned char *) local_syms)
7774 {
7775 if (!info->keep_memory)
7776 free (local_syms);
7777 else
7778 symtab_hdr->contents = (unsigned char *) local_syms;
7779 }
7780 free (skip);
7781 }
7782
7783 return TRUE;
7784}
7785
65f38f15
AM		 7786/* Allocate space in .plt, .got and associated reloc sections for
7787 dynamic relocs. */
5bd4f169 7788
b34976b6 7789static bfd_boolean
4ce794b7 7790allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7791{
65f38f15
AM		 7792 struct bfd_link_info *info;
7793 struct ppc_link_hash_table *htab;
5bd4f169 7794 asection *s;
65f38f15
AM		 7795 struct ppc_link_hash_entry *eh;
7796 struct ppc_dyn_relocs *p;
411e1bfb 7797 struct got_entry *gent;
5bd4f169 7798
e92d460e 7799 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7800 return TRUE;
5bd4f169 7801
e92d460e
AM		 7802 if (h->root.type == bfd_link_hash_warning)
7803 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7804
65f38f15
AM		 7805 info = (struct bfd_link_info *) inf;
7806 htab = ppc_hash_table (info);
5bd4f169 7807
65f38f15 7808 if (htab->elf.dynamic_sections_created
411e1bfb 7809 && h->dynindx != -1
9c7a29a3 7810 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7811 {
411e1bfb
AM		 7812 struct plt_entry *pent;
7813 bfd_boolean doneone = FALSE;
7814 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7815 if (pent->plt.refcount > 0)
7816 {
411e1bfb
AM		 7817 /* If this is the first .plt entry, make room for the special
7818 first entry. */
4ce794b7 7819 s = htab->plt;
eea6121a
AM		 7820 if (s->size == 0)
7821 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7822
eea6121a 7823 pent->plt.offset = s->size;
411e1bfb
AM		 7824
7825 /* Make room for this entry. */
eea6121a 7826 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7827
7828 /* Make room for the .glink code. */
4ce794b7 7829 s = htab->glink;
eea6121a
AM		 7830 if (s->size == 0)
7831 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7832 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7833 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7834 s->size += 4;
7835 s->size += 2*4;
411e1bfb
AM		 7836
7837 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7838 s = htab->relplt;
eea6121a 7839 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7840 doneone = TRUE;
7841 }
7842 else
7843 pent->plt.offset = (bfd_vma) -1;
7844 if (!doneone)
65f38f15 7845 {
411e1bfb 7846 h->plt.plist = NULL;
f5385ebf 7847 h->needs_plt = 0;
65f38f15
AM		 7848 }
7849 }
7850 else
7851 {
411e1bfb 7852 h->plt.plist = NULL;
f5385ebf 7853 h->needs_plt = 0;
65f38f15
AM		 7854 }
7855
951fd09b
AM		 7856 eh = (struct ppc_link_hash_entry *) h;
7857 /* Run through the TLS GD got entries first if we're changing them
7858 to TPREL. */
e7b938ca 7859 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7860 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7861 if (gent->got.refcount > 0
7862 && (gent->tls_type & TLS_GD) != 0)
7863 {
7864 /* This was a GD entry that has been converted to TPREL. If
7865 there happens to be a TPREL entry we can use that one. */
7866 struct got_entry *ent;
7867 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7868 if (ent->got.refcount > 0
7869 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7870 && ent->addend == gent->addend
7871 && ent->owner == gent->owner)
951fd09b
AM		 7872 {
7873 gent->got.refcount = 0;
7874 break;
7875 }
7876
7877 /* If not, then we'll be using our own TPREL entry. */
7878 if (gent->got.refcount != 0)
7879 gent->tls_type = TLS_TLS | TLS_TPREL;
7880 }
7881
411e1bfb
AM		 7882 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7883 if (gent->got.refcount > 0)
7884 {
951fd09b
AM		 7885 bfd_boolean dyn;
7886
411e1bfb 7887 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7888 Undefined weak syms won't yet be marked as dynamic,
7889 nor will all TLS symbols. */
411e1bfb 7890 if (h->dynindx == -1
f5385ebf 7891 && !h->forced_local)
411e1bfb 7892 {
c152c796 7893 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7894 return FALSE;
7895 }
65f38f15 7896
d881513a 7897 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7898 && !h->def_dynamic)
411e1bfb 7899 {
102890f0
AM		 7900 ppc64_tlsld_got (gent->owner)->refcount += 1;
7901 gent->got.offset = (bfd_vma) -1;
951fd09b 7902 continue;
411e1bfb 7903 }
951fd09b 7904
0c8d6e5c 7905 if (!is_ppc64_elf (gent->owner))
0ffa91dd
NC		 7906 continue;
7907
e717da7e 7908 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7909 gent->got.offset = s->size;
7910 s->size
d881513a 7911 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7912 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7913 if ((info->shared
7914 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7915 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7916 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7917 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7918 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7919 ? 2 * sizeof (Elf64_External_Rela)
7920 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7921 }
7922 else
7923 gent->got.offset = (bfd_vma) -1;
65f38f15 7924
65f38f15 7925 if (eh->dyn_relocs == NULL)
b34976b6 7926 return TRUE;
65f38f15
AM		 7927
7928 /* In the shared -Bsymbolic case, discard space allocated for
7929 dynamic pc-relative relocs against symbols which turn out to be
7930 defined in regular objects. For the normal shared case, discard
7931 space for relocs that have become local due to symbol visibility
7932 changes. */
7933
7934 if (info->shared)
7935 {
9c7a29a3 7936 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 7937 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 7938 generated via assembly. We want calls to protected symbols to
7939 resolve directly to the function rather than going via the plt.
7940 If people want function pointer comparisons to work as expected
7941 then they should avoid writing weird assembly. */
09695f56 7942 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7943 {
7944 struct ppc_dyn_relocs **pp;
7945
7946 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7947 {
65f38f15
AM		 7948 p->count -= p->pc_count;
7949 p->pc_count = 0;
7950 if (p->count == 0)
7951 *pp = p->next;
7952 else
7953 pp = &p->next;
5bd4f169 7954 }
65f38f15 7955 }
4e795f50
AM		 7956
7957 /* Also discard relocs on undefined weak syms with non-default
7958 visibility. */
cab87ef9
AM		 7959 if (eh->dyn_relocs != NULL
7960 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 7961 {
7962 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7963 eh->dyn_relocs = NULL;
7964
7965 /* Make sure this symbol is output as a dynamic symbol.
7966 Undefined weak syms won't yet be marked as dynamic. */
7967 else if (h->dynindx == -1
7968 && !h->forced_local)
7969 {
7970 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7971 return FALSE;
7972 }
7973 }
65f38f15 7974 }
f4656909 7975 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7976 {
7977 /* For the non-shared case, discard space for relocs against
7978 symbols which turn out to need copy relocs or are not
7979 dynamic. */
7980
f5385ebf
AM		 7981 if (!h->non_got_ref
7982 && h->def_dynamic
7983 && !h->def_regular)
65f38f15
AM		 7984 {
7985 /* Make sure this symbol is output as a dynamic symbol.
7986 Undefined weak syms won't yet be marked as dynamic. */
7987 if (h->dynindx == -1
f5385ebf 7988 && !h->forced_local)
65f38f15 7989 {
c152c796 7990 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7991 return FALSE;
65f38f15
AM		 7992 }
7993
7994 /* If that succeeded, we know we'll be keeping all the
7995 relocs. */
7996 if (h->dynindx != -1)
7997 goto keep;
7998 }
7999
8000 eh->dyn_relocs = NULL;
8001
ec338859 8002 keep: ;
65f38f15
AM		 8003 }
8004
8005 /* Finally, allocate space. */
8006 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8007 {
8008 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 8009 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 8010 }
8011
b34976b6 8012 return TRUE;
65f38f15
AM		 8013}
8014
8015/* Find any dynamic relocs that apply to read-only sections. */
8016
b34976b6 8017static bfd_boolean
4ce794b7 8018readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 8019{
8020 struct ppc_link_hash_entry *eh;
8021 struct ppc_dyn_relocs *p;
8022
e92d460e
AM		 8023 if (h->root.type == bfd_link_hash_warning)
8024 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8025
65f38f15
AM		 8026 eh = (struct ppc_link_hash_entry *) h;
8027 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8028 {
8029 asection *s = p->sec->output_section;
8030
8031 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8032 {
4ce794b7 8033 struct bfd_link_info *info = inf;
65f38f15
AM		 8034
8035 info->flags |= DF_TEXTREL;
8036
8037 /* Not an error, just cut short the traversal. */
b34976b6 8038 return FALSE;
65f38f15
AM		 8039 }
8040 }
b34976b6 8041 return TRUE;
65f38f15
AM		 8042}
8043
8044/* Set the sizes of the dynamic sections. */
8045
b34976b6 8046static bfd_boolean
4ce794b7
AM		 8047ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8048 struct bfd_link_info *info)
65f38f15
AM		 8049{
8050 struct ppc_link_hash_table *htab;
8051 bfd *dynobj;
8052 asection *s;
b34976b6 8053 bfd_boolean relocs;
65f38f15
AM		 8054 bfd *ibfd;
8055
8056 htab = ppc_hash_table (info);
8057 dynobj = htab->elf.dynobj;
8058 if (dynobj == NULL)
8059 abort ();
8060
8061 if (htab->elf.dynamic_sections_created)
8062 {
8063 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 8064 if (info->executable)
65f38f15
AM		 8065 {
8066 s = bfd_get_section_by_name (dynobj, ".interp");
8067 if (s == NULL)
8068 abort ();
eea6121a 8069 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 8070 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8071 }
8072 }
8073
8074 /* Set up .got offsets for local syms, and space for local dynamic
8075 relocs. */
8076 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8077 {
411e1bfb
AM		 8078 struct got_entry **lgot_ents;
8079 struct got_entry **end_lgot_ents;
e7b938ca 8080 char *lgot_masks;
65f38f15
AM		 8081 bfd_size_type locsymcount;
8082 Elf_Internal_Shdr *symtab_hdr;
8083 asection *srel;
8084
0c8d6e5c 8085 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 8086 continue;
8087
8088 for (s = ibfd->sections; s != NULL; s = s->next)
8089 {
ec338859 8090 struct ppc_dyn_relocs *p;
65f38f15 8091
6edfbbad 8092 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 8093 {
ec338859
AM		 8094 if (!bfd_is_abs_section (p->sec)
8095 && bfd_is_abs_section (p->sec->output_section))
8096 {
8097 /* Input section has been discarded, either because
8098 it is a copy of a linkonce section or due to
8099 linker script /DISCARD/, so we'll be discarding
8100 the relocs too. */
8101 }
248866a8 8102 else if (p->count != 0)
ec338859
AM		 8103 {
8104 srel = elf_section_data (p->sec)->sreloc;
eea6121a 8105 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 8106 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8107 info->flags |= DF_TEXTREL;
ec338859 8108 }
65f38f15
AM		 8109 }
8110 }
8111
411e1bfb
AM		 8112 lgot_ents = elf_local_got_ents (ibfd);
8113 if (!lgot_ents)
65f38f15
AM		 8114 continue;
8115
0ffa91dd 8116 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 8117 locsymcount = symtab_hdr->sh_info;
411e1bfb 8118 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 8119 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 8120 s = ppc64_elf_tdata (ibfd)->got;
8121 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 8122 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 8123 {
411e1bfb
AM		 8124 struct got_entry *ent;
8125
8126 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
8127 if (ent->got.refcount > 0)
8128 {
e7b938ca 8129 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 8130 {
102890f0
AM		 8131 ppc64_tlsld_got (ibfd)->refcount += 1;
8132 ent->got.offset = (bfd_vma) -1;
411e1bfb
AM		 8133 }
8134 else
8135 {
eea6121a 8136 ent->got.offset = s->size;
e7b938ca 8137 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 8138 {
eea6121a 8139 s->size += 16;
411e1bfb 8140 if (info->shared)
eea6121a 8141 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 8142 }
8143 else
8144 {
eea6121a 8145 s->size += 8;
411e1bfb 8146 if (info->shared)
eea6121a 8147 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 8148 }
8149 }
8150 }
8151 else
8152 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 8153 }
8154 }
8155
8156 /* Allocate global sym .plt and .got entries, and space for global
8157 sym dynamic relocs. */
4ce794b7 8158 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 8159
102890f0
AM		 8160 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8161 {
0c8d6e5c 8162 if (!is_ppc64_elf (ibfd))
102890f0
AM		 8163 continue;
8164
8165 if (ppc64_tlsld_got (ibfd)->refcount > 0)
8166 {
8167 s = ppc64_elf_tdata (ibfd)->got;
8168 ppc64_tlsld_got (ibfd)->offset = s->size;
8169 s->size += 16;
8170 if (info->shared)
8171 {
8172 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8173 srel->size += sizeof (Elf64_External_Rela);
8174 }
8175 }
8176 else
8177 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
8178 }
8179
65f38f15
AM		 8180 /* We now have determined the sizes of the various dynamic sections.
8181 Allocate memory for them. */
b34976b6 8182 relocs = FALSE;
65f38f15
AM		 8183 for (s = dynobj->sections; s != NULL; s = s->next)
8184 {
8185 if ((s->flags & SEC_LINKER_CREATED) == 0)
8186 continue;
8187
4ce794b7 8188 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 8189 /* These haven't been allocated yet; don't strip. */
8190 continue;
e717da7e
AM		 8191 else if (s == htab->got
8192 || s == htab->plt
c456f082
AM		 8193 || s == htab->glink
8194 || s == htab->dynbss)
65f38f15
AM		 8195 {
8196 /* Strip this section if we don't need it; see the
8197 comment below. */
5bd4f169 8198 }
0112cd26 8199 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 8200 {
c456f082 8201 if (s->size != 0)
5bd4f169 8202 {
4ce794b7 8203 if (s != htab->relplt)
b34976b6 8204 relocs = TRUE;
5bd4f169
AM		 8205
8206 /* We use the reloc_count field as a counter if we need
8207 to copy relocs into the output file. */
8208 s->reloc_count = 0;
8209 }
8210 }
65f38f15 8211 else
5bd4f169
AM		 8212 {
8213 /* It's not one of our sections, so don't allocate space. */
8214 continue;
8215 }
8216
eea6121a 8217 if (s->size == 0)
5bd4f169 8218 {
c456f082
AM		 8219 /* If we don't need this section, strip it from the
8220 output file. This is mostly to handle .rela.bss and
8221 .rela.plt. We must create both sections in
8222 create_dynamic_sections, because they must be created
8223 before the linker maps input sections to output
8224 sections. The linker does that before
8225 adjust_dynamic_symbol is called, and it is that
8226 function which decides whether anything needs to go
8227 into these sections. */
8423293d 8228 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 8229 continue;
8230 }
8231
c456f082 8232 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 8233 continue;
8234
65f38f15
AM		 8235 /* Allocate memory for the section contents. We use bfd_zalloc
8236 here in case unused entries are not reclaimed before the
8237 section's contents are written out. This should not happen,
411e1bfb
AM		 8238 but this way if it does we get a R_PPC64_NONE reloc in .rela
8239 sections instead of garbage.
8240 We also rely on the section contents being zero when writing
8241 the GOT. */
eea6121a 8242 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8243 if (s->contents == NULL)
b34976b6 8244 return FALSE;
5bd4f169
AM		 8245 }
8246
e717da7e
AM		 8247 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8248 {
0c8d6e5c 8249 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 8250 continue;
8251
e717da7e
AM		 8252 s = ppc64_elf_tdata (ibfd)->got;
8253 if (s != NULL && s != htab->got)
8254 {
eea6121a 8255 if (s->size == 0)
8423293d 8256 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8257 else
8258 {
eea6121a 8259 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8260 if (s->contents == NULL)
8261 return FALSE;
8262 }
8263 }
8264 s = ppc64_elf_tdata (ibfd)->relgot;
8265 if (s != NULL)
8266 {
eea6121a 8267 if (s->size == 0)
8423293d 8268 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8269 else
8270 {
eea6121a 8271 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8272 if (s->contents == NULL)
8273 return FALSE;
8274 relocs = TRUE;
8275 s->reloc_count = 0;
8276 }
8277 }
8278 }
8279
e86ce104 8280 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 8281 {
8282 /* Add some entries to the .dynamic section. We fill in the
8283 values later, in ppc64_elf_finish_dynamic_sections, but we
8284 must add the entries now so that we get the correct size for
8285 the .dynamic section. The DT_DEBUG entry is filled in by the
8286 dynamic linker and used by the debugger. */
dc810e39 8287#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8288 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8289
36af4a4e 8290 if (info->executable)
5bd4f169 8291 {
dc810e39 8292 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8293 return FALSE;
5bd4f169
AM		 8294 }
8295
eea6121a 8296 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8297 {
dc810e39
AM		 8298 if (!add_dynamic_entry (DT_PLTGOT, 0)
8299 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8300 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 8301 || !add_dynamic_entry (DT_JMPREL, 0)
8302 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8303 return FALSE;
5bd4f169
AM		 8304 }
8305
19397422
AM		 8306 if (NO_OPD_RELOCS)
8307 {
8308 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8309 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8310 return FALSE;
19397422
AM		 8311 }
8312
5bd4f169
AM		 8313 if (relocs)
8314 {
dc810e39
AM		 8315 if (!add_dynamic_entry (DT_RELA, 0)
8316 || !add_dynamic_entry (DT_RELASZ, 0)
8317 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8318 return FALSE;
5bd4f169 8319
65f38f15
AM		 8320 /* If any dynamic relocs apply to a read-only section,
8321 then we need a DT_TEXTREL entry. */
248866a8 8322 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8323 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8324
65f38f15 8325 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8326 {
65f38f15 8327 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8328 return FALSE;
5bd4f169 8329 }
5bd4f169 8330 }
5bd4f169 8331 }
65f38f15 8332#undef add_dynamic_entry
5bd4f169 8333
b34976b6 8334 return TRUE;
5bd4f169
AM		 8335}
8336
721956f4 8337/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8338
4ce794b7
AM		 8339static inline enum ppc_stub_type
8340ppc_type_of_stub (asection *input_sec,
8341 const Elf_Internal_Rela *rel,
8342 struct ppc_link_hash_entry **hash,
8343 bfd_vma destination)
5bd4f169 8344{
721956f4
AM		 8345 struct ppc_link_hash_entry *h = *hash;
8346 bfd_vma location;
8347 bfd_vma branch_offset;
8348 bfd_vma max_branch_offset;
4ce794b7 8349 enum elf_ppc64_reloc_type r_type;
5bd4f169 8350
721956f4
AM		 8351 if (h != NULL)
8352 {
7fe2b9a6
AM		 8353 struct ppc_link_hash_entry *fdh = h;
8354 if (fdh->oh != NULL
8355 && fdh->oh->is_func_descriptor)
8356 fdh = fdh->oh;
8387904d 8357
7fe2b9a6 8358 if (fdh->elf.dynindx != -1)
5bd4f169 8359 {
411e1bfb 8360 struct plt_entry *ent;
8387904d 8361
7fe2b9a6 8362 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 8363 if (ent->addend == rel->r_addend
8364 && ent->plt.offset != (bfd_vma) -1)
8365 {
7fe2b9a6 8366 *hash = fdh;
411e1bfb
AM		 8367 return ppc_stub_plt_call;
8368 }
5bd4f169
AM		 8369 }
8370
7fe2b9a6
AM		 8371 /* Here, we know we don't have a plt entry. If we don't have a
8372 either a defined function descriptor or a defined entry symbol
8373 in a regular object file, then it is pointless trying to make
8374 any other type of stub. */
8375 if (!((fdh->elf.root.type == bfd_link_hash_defined
8376 || fdh->elf.root.type == bfd_link_hash_defweak)
8377 && fdh->elf.root.u.def.section->output_section != NULL)
8378 && !((h->elf.root.type == bfd_link_hash_defined
8379 || h->elf.root.type == bfd_link_hash_defweak)
8380 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8381 return ppc_stub_none;
5d1634d7 8382 }
5d1634d7 8383
721956f4
AM		 8384 /* Determine where the call point is. */
8385 location = (input_sec->output_offset
8386 + input_sec->output_section->vma
8387 + rel->r_offset);
5d1634d7 8388
721956f4
AM		 8389 branch_offset = destination - location;
8390 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8391
721956f4
AM		 8392 /* Determine if a long branch stub is needed. */
8393 max_branch_offset = 1 << 25;
4ce794b7 8394 if (r_type != R_PPC64_REL24)
721956f4 8395 max_branch_offset = 1 << 15;
5d1634d7 8396
721956f4
AM		 8397 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8398 /* We need a stub. Figure out whether a long_branch or plt_branch
8399 is needed later. */
8400 return ppc_stub_long_branch;
5d1634d7 8401
721956f4 8402 return ppc_stub_none;
5d1634d7
AM		 8403}
8404
8405/* Build a .plt call stub. */
8406
4ce794b7 8407static inline bfd_byte *
176a0d42 8408build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
5d1634d7
AM		 8409{
8410#define PPC_LO(v) ((v) & 0xffff)
8411#define PPC_HI(v) (((v) >> 16) & 0xffff)
8412#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8413
ac2df442
AM		 8414 if (PPC_HA (offset) != 0)
8415 {
176a0d42
AM		 8416 if (r != NULL)
8417 {
8418 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8419 r[1].r_offset = r[0].r_offset + 8;
8420 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8421 r[1].r_addend = r[0].r_addend;
8422 if (PPC_HA (offset + 16) != PPC_HA (offset))
8423 {
8424 r[2].r_offset = r[1].r_offset + 4;
8425 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
8426 r[2].r_addend = r[0].r_addend;
8427 }
8428 else
8429 {
8430 r[2].r_offset = r[1].r_offset + 8;
8431 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8432 r[2].r_addend = r[0].r_addend + 8;
8433 r[3].r_offset = r[2].r_offset + 4;
8434 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8435 r[3].r_addend = r[0].r_addend + 16;
8436 }
8437 }
ac2df442
AM		 8438 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8439 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8440 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8441 if (PPC_HA (offset + 16) != PPC_HA (offset))
8442 {
8443 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8444 offset = 0;
8445 }
8446 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8447 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8448 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8449 bfd_put_32 (obfd, BCTR, p), p += 4;
8450 }
8451 else
8452 {
176a0d42
AM		 8453 if (r != NULL)
8454 {
8455 r[0].r_offset += 4;
8456 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8457 if (PPC_HA (offset + 16) != PPC_HA (offset))
8458 {
8459 r[1].r_offset = r[0].r_offset + 4;
8460 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
8461 r[1].r_addend = r[0].r_addend;
8462 }
8463 else
8464 {
8465 r[1].r_offset = r[0].r_offset + 8;
8466 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8467 r[1].r_addend = r[0].r_addend + 16;
8468 r[2].r_offset = r[1].r_offset + 4;
8469 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8470 r[2].r_addend = r[0].r_addend + 8;
8471 }
8472 }
ac2df442
AM		 8473 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8474 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8475 if (PPC_HA (offset + 16) != PPC_HA (offset))
8476 {
8477 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8478 offset = 0;
8479 }
8480 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8481 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8482 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8483 bfd_put_32 (obfd, BCTR, p), p += 4;
8484 }
5d1634d7
AM		 8485 return p;
8486}
8487
176a0d42
AM		 8488static Elf_Internal_Rela *
8489get_relocs (asection *sec, int count)
8490{
8491 Elf_Internal_Rela *relocs;
8492 struct bfd_elf_section_data *elfsec_data;
8493
8494 elfsec_data = elf_section_data (sec);
8495 relocs = elfsec_data->relocs;
8496 if (relocs == NULL)
8497 {
8498 bfd_size_type relsize;
8499 relsize = sec->reloc_count * sizeof (*relocs);
8500 relocs = bfd_alloc (sec->owner, relsize);
8501 if (relocs == NULL)
8502 return NULL;
8503 elfsec_data->relocs = relocs;
8504 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
8505 * sizeof (Elf64_External_Rela));
8506 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
8507 sec->reloc_count = 0;
8508 }
8509 relocs += sec->reloc_count;
8510 sec->reloc_count += count;
8511 return relocs;
8512}
8513
b34976b6 8514static bfd_boolean
4ce794b7 8515ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8516{
721956f4
AM		 8517 struct ppc_stub_hash_entry *stub_entry;
8518 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 8519 struct bfd_link_info *info;
8520 struct ppc_link_hash_table *htab;
721956f4
AM		 8521 bfd_byte *loc;
8522 bfd_byte *p;
411e1bfb 8523 struct plt_entry *ent;
ee75fd95 8524 bfd_vma dest, off;
721956f4 8525 int size;
176a0d42 8526 Elf_Internal_Rela *r;
5d1634d7 8527
721956f4
AM		 8528 /* Massage our args to the form they really have. */
8529 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8530 info = in_arg;
5d1634d7 8531
5d1634d7
AM		 8532 htab = ppc_hash_table (info);
8533
721956f4 8534 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8535 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8536 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8537
4ce794b7 8538 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8539 switch (stub_entry->stub_type)
5d1634d7 8540 {
721956f4 8541 case ppc_stub_long_branch:
ad8e1ba5 8542 case ppc_stub_long_branch_r2off:
721956f4 8543 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 8544 off = dest = (stub_entry->target_value
8545 + stub_entry->target_section->output_offset
8546 + stub_entry->target_section->output_section->vma);
5d1634d7 8547
721956f4
AM		 8548 /* And this is where we are coming from. */
8549 off -= (stub_entry->stub_offset
97b639ba
AM		 8550 + stub_entry->stub_sec->output_offset
8551 + stub_entry->stub_sec->output_section->vma);
e86ce104 8552
ac2df442
AM		 8553 size = 4;
8554 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM		 8555 {
8556 bfd_vma r2off;
8557
8558 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8559 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8560 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8561 loc += 4;
ac2df442
AM		 8562 size = 12;
8563 if (PPC_HA (r2off) != 0)
8564 {
8565 size = 16;
8566 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8567 loc += 4;
8568 }
97b639ba 8569 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 8570 loc += 4;
ac2df442 8571 off -= size - 4;
ad8e1ba5 8572 }
97b639ba 8573 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8574
5c3dead3
AM		 8575 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8576 {
8577 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8578 stub_entry->root.string);
8579 htab->stub_error = TRUE;
8580 return FALSE;
8581 }
ee75fd95
AM		 8582
8583 if (info->emitrelocations)
8584 {
176a0d42
AM		 8585 r = get_relocs (stub_entry->stub_sec, 1);
8586 if (r == NULL)
8587 return FALSE;
ee75fd95
AM		 8588 r->r_offset = loc - stub_entry->stub_sec->contents;
8589 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8590 r->r_addend = dest;
8591 if (stub_entry->h != NULL)
8592 {
8593 struct elf_link_hash_entry **hashes;
8594 unsigned long symndx;
8595 struct ppc_link_hash_entry *h;
8596
8597 hashes = elf_sym_hashes (htab->stub_bfd);
8598 if (hashes == NULL)
8599 {
8600 bfd_size_type hsize;
8601
8602 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8603 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8604 if (hashes == NULL)
8605 return FALSE;
8606 elf_sym_hashes (htab->stub_bfd) = hashes;
8607 htab->stub_globals = 1;
8608 }
8609 symndx = htab->stub_globals++;
8610 h = stub_entry->h;
8611 hashes[symndx] = &h->elf;
8612 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8613 if (h->oh != NULL && h->oh->is_func)
8614 h = h->oh;
8615 if (h->elf.root.u.def.section != stub_entry->target_section)
8616 /* H is an opd symbol. The addend must be zero. */
8617 r->r_addend = 0;
8618 else
8619 {
8620 off = (h->elf.root.u.def.value
8621 + h->elf.root.u.def.section->output_offset
8622 + h->elf.root.u.def.section->output_section->vma);
8623 r->r_addend -= off;
8624 }
8625 }
8626 }
721956f4 8627 break;
e86ce104 8628
721956f4 8629 case ppc_stub_plt_branch:
ad8e1ba5 8630 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8631 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8632 stub_entry->root.string + 9,
b34976b6 8633 FALSE, FALSE);
721956f4
AM		 8634 if (br_entry == NULL)
8635 {
8636 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8637 stub_entry->root.string);
b34976b6
AM		 8638 htab->stub_error = TRUE;
8639 return FALSE;
721956f4
AM		 8640 }
8641
176a0d42
AM		 8642 dest = (stub_entry->target_value
8643 + stub_entry->target_section->output_offset
8644 + stub_entry->target_section->output_section->vma);
721956f4 8645
176a0d42 8646 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 8647 htab->brlt->contents + br_entry->offset);
721956f4 8648
f94498ff 8649 if (br_entry->iter == htab->stub_iteration)
721956f4 8650 {
f94498ff 8651 br_entry->iter = 0;
84f5d08e 8652
f94498ff 8653 if (htab->relbrlt != NULL)
84f5d08e 8654 {
f94498ff
AM		 8655 /* Create a reloc for the branch lookup table entry. */
8656 Elf_Internal_Rela rela;
8657 bfd_byte *rl;
8658
8659 rela.r_offset = (br_entry->offset
8660 + htab->brlt->output_offset
8661 + htab->brlt->output_section->vma);
8662 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 8663 rela.r_addend = dest;
f94498ff
AM		 8664
8665 rl = htab->relbrlt->contents;
8666 rl += (htab->relbrlt->reloc_count++
8667 * sizeof (Elf64_External_Rela));
8668 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8669 }
8670 else if (info->emitrelocations)
8671 {
176a0d42
AM		 8672 r = get_relocs (htab->brlt, 1);
8673 if (r == NULL)
8674 return FALSE;
8675 /* brlt, being SEC_LINKER_CREATED does not go through the
8676 normal reloc processing. Symbols and offsets are not
8677 translated from input file to output file form, so
8678 set up the offset per the output file. */
f94498ff
AM		 8679 r->r_offset = (br_entry->offset
8680 + htab->brlt->output_offset
8681 + htab->brlt->output_section->vma);
8682 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 8683 r->r_addend = dest;
84f5d08e 8684 }
84f5d08e 8685 }
721956f4 8686
176a0d42
AM		 8687 dest = (br_entry->offset
8688 + htab->brlt->output_offset
8689 + htab->brlt->output_section->vma);
8690
8691 off = (dest
4ce794b7 8692 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8693 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8694
ad8e1ba5 8695 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8696 {
8697 (*_bfd_error_handler)
e86ce104 8698 (_("linkage table error against `%s'"),
721956f4 8699 stub_entry->root.string);
5d1634d7 8700 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8701 htab->stub_error = TRUE;
8702 return FALSE;
5d1634d7 8703 }
41bd81ab 8704
176a0d42
AM		 8705 if (info->emitrelocations)
8706 {
8707 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
8708 if (r == NULL)
8709 return FALSE;
8710 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 8711 if (bfd_big_endian (info->output_bfd))
8712 r[0].r_offset += 2;
176a0d42
AM		 8713 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
8714 r[0].r_offset += 4;
8715 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8716 r[0].r_addend = dest;
8717 if (PPC_HA (off) != 0)
8718 {
8719 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8720 r[1].r_offset = r[0].r_offset + 4;
8721 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8722 r[1].r_addend = r[0].r_addend;
8723 }
8724 }
8725
ad8e1ba5
AM		 8726 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8727 {
176a0d42 8728 if (PPC_HA (off) != 0)
ac2df442
AM		 8729 {
8730 size = 16;
176a0d42 8731 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8732 loc += 4;
176a0d42 8733 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM		 8734 }
8735 else
8736 {
8737 size = 12;
176a0d42 8738 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 8739 }
ad8e1ba5
AM		 8740 }
8741 else
8742 {
8743 bfd_vma r2off;
8744
8745 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8746 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8747 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8748 loc += 4;
ac2df442 8749 size = 20;
176a0d42 8750 if (PPC_HA (off) != 0)
ac2df442
AM		 8751 {
8752 size += 4;
176a0d42 8753 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8754 loc += 4;
176a0d42 8755 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM		 8756 loc += 4;
8757 }
8758 else
8759 {
176a0d42 8760 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM		 8761 loc += 4;
8762 }
8763
8764 if (PPC_HA (r2off) != 0)
8765 {
8766 size += 4;
8767 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8768 loc += 4;
8769 }
97b639ba 8770 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8771 }
8772 loc += 4;
97b639ba 8773 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8774 loc += 4;
97b639ba 8775 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8776 break;
5d1634d7 8777
721956f4 8778 case ppc_stub_plt_call:
c862ae31
AM		 8779 /* Do the best we can for shared libraries built without
8780 exporting ".foo" for each "foo". This can happen when symbol
8781 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8782 if (stub_entry->h->oh != NULL
8783 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8784 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8785 {
8786 /* Point the symbol at the stub. There may be multiple stubs,
8787 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8788 defined somewhere. Maybe defining the symbol in the stub
8789 section is a silly idea. If we didn't do this, htab->top_id
8790 could disappear. */
34814b9f
AM		 8791 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8792 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8793 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8794 }
8795
721956f4 8796 /* Now build the stub. */
176a0d42 8797 dest = (bfd_vma) -1;
411e1bfb
AM		 8798 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8799 if (ent->addend == stub_entry->addend)
8800 {
176a0d42 8801 dest = ent->plt.offset;
411e1bfb
AM		 8802 break;
8803 }
176a0d42 8804 if (dest >= (bfd_vma) -2)
721956f4
AM		 8805 abort ();
8806
176a0d42
AM		 8807 dest &= ~ (bfd_vma) 1;
8808 dest += (htab->plt->output_offset
8809 + htab->plt->output_section->vma);
8810
8811 off = (dest
8812 - elf_gp (htab->plt->output_section->owner)
8813 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8814
ad8e1ba5 8815 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8816 {
8817 (*_bfd_error_handler)
8818 (_("linkage table error against `%s'"),
8819 stub_entry->h->elf.root.root.string);
8820 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8821 htab->stub_error = TRUE;
8822 return FALSE;
721956f4
AM		 8823 }
8824
176a0d42
AM		 8825 r = NULL;
8826 if (info->emitrelocations)
8827 {
8828 r = get_relocs (stub_entry->stub_sec,
8829 (2 + (PPC_HA (off) != 0)
8830 + (PPC_HA (off + 16) == PPC_HA (off))));
8831 if (r == NULL)
8832 return FALSE;
8833 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 8834 if (bfd_big_endian (info->output_bfd))
8835 r[0].r_offset += 2;
176a0d42
AM		 8836 r[0].r_addend = dest;
8837 }
8838 p = build_plt_stub (htab->stub_bfd, loc, off, r);
721956f4
AM		 8839 size = p - loc;
8840 break;
8841
8842 default:
8843 BFD_FAIL ();
b34976b6 8844 return FALSE;
721956f4
AM		 8845 }
8846
eea6121a 8847 stub_entry->stub_sec->size += size;
97b639ba 8848
ee75fd95 8849 if (htab->emit_stub_syms)
97b639ba
AM		 8850 {
8851 struct elf_link_hash_entry *h;
ee75fd95
AM		 8852 size_t len1, len2;
8853 char *name;
8854 const char *const stub_str[] = { "long_branch",
8855 "long_branch_r2off",
8856 "plt_branch",
8857 "plt_branch_r2off",
8858 "plt_call" };
8859
8860 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8861 len2 = strlen (stub_entry->root.string);
8862 name = bfd_malloc (len1 + len2 + 2);
8863 if (name == NULL)
8864 return FALSE;
8865 memcpy (name, stub_entry->root.string, 9);
8866 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8867 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8868 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8869 if (h == NULL)
8870 return FALSE;
8871 if (h->root.type == bfd_link_hash_new)
8872 {
8873 h->root.type = bfd_link_hash_defined;
8874 h->root.u.def.section = stub_entry->stub_sec;
8875 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8876 h->ref_regular = 1;
8877 h->def_regular = 1;
8878 h->ref_regular_nonweak = 1;
8879 h->forced_local = 1;
8880 h->non_elf = 0;
97b639ba
AM		 8881 }
8882 }
8883
b34976b6 8884 return TRUE;
721956f4
AM		 8885}
8886
8887/* As above, but don't actually build the stub. Just bump offset so
8888 we know stub section sizes, and select plt_branch stubs where
8889 long_branch stubs won't do. */
8890
b34976b6 8891static bfd_boolean
4ce794b7 8892ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8893{
8894 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8895 struct bfd_link_info *info;
721956f4
AM		 8896 struct ppc_link_hash_table *htab;
8897 bfd_vma off;
8898 int size;
8899
8900 /* Massage our args to the form they really have. */
8901 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8902 info = in_arg;
8903
8904 htab = ppc_hash_table (info);
721956f4
AM		 8905
8906 if (stub_entry->stub_type == ppc_stub_plt_call)
8907 {
411e1bfb 8908 struct plt_entry *ent;
58ac9f71 8909 off = (bfd_vma) -1;
411e1bfb
AM		 8910 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8911 if (ent->addend == stub_entry->addend)
8912 {
8913 off = ent->plt.offset & ~(bfd_vma) 1;
8914 break;
8915 }
58ac9f71 8916 if (off >= (bfd_vma) -2)
411e1bfb 8917 abort ();
4ce794b7
AM		 8918 off += (htab->plt->output_offset
8919 + htab->plt->output_section->vma
8920 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8921 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8922
ad8e1ba5 8923 size = PLT_CALL_STUB_SIZE;
ac2df442
AM		 8924 if (PPC_HA (off) == 0)
8925 size -= 4;
4ce794b7 8926 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4 8927 size += 4;
176a0d42
AM		 8928 if (info->emitrelocations)
8929 {
8930 stub_entry->stub_sec->reloc_count
8931 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
8932 stub_entry->stub_sec->flags |= SEC_RELOC;
8933 }
721956f4
AM		 8934 }
8935 else
8936 {
ad8e1ba5
AM		 8937 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8938 variants. */
ac2df442
AM		 8939 bfd_vma r2off = 0;
8940
721956f4
AM		 8941 off = (stub_entry->target_value
8942 + stub_entry->target_section->output_offset
8943 + stub_entry->target_section->output_section->vma);
eea6121a 8944 off -= (stub_entry->stub_sec->size
721956f4
AM		 8945 + stub_entry->stub_sec->output_offset
8946 + stub_entry->stub_sec->output_section->vma);
8947
ad8e1ba5
AM		 8948 /* Reset the stub type from the plt variant in case we now
8949 can reach with a shorter stub. */
8950 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8951 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8952
8953 size = 4;
8954 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8955 {
ac2df442
AM		 8956 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8957 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8958 size = 12;
8959 if (PPC_HA (r2off) != 0)
8960 size = 16;
8961 off -= size - 4;
ad8e1ba5
AM		 8962 }
8963
8964 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8965 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8966 {
8967 struct ppc_branch_hash_entry *br_entry;
8968
8969 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8970 stub_entry->root.string + 9,
b34976b6 8971 TRUE, FALSE);
721956f4
AM		 8972 if (br_entry == NULL)
8973 {
8974 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8975 stub_entry->root.string);
b34976b6
AM		 8976 htab->stub_error = TRUE;
8977 return FALSE;
721956f4
AM		 8978 }
8979
8980 if (br_entry->iter != htab->stub_iteration)
8981 {
8982 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8983 br_entry->offset = htab->brlt->size;
8984 htab->brlt->size += 8;
63bc6f6c 8985
ee75fd95 8986 if (htab->relbrlt != NULL)
eea6121a 8987 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 8988 else if (info->emitrelocations)
8989 {
8990 htab->brlt->reloc_count += 1;
8991 htab->brlt->flags |= SEC_RELOC;
8992 }
721956f4 8993 }
ad8e1ba5
AM		 8994
8995 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 8996 off = (br_entry->offset
8997 + htab->brlt->output_offset
8998 + htab->brlt->output_section->vma
8999 - elf_gp (htab->brlt->output_section->owner)
9000 - htab->stub_group[stub_entry->id_sec->id].toc_off);
9001
176a0d42
AM		 9002 if (info->emitrelocations)
9003 {
9004 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9005 stub_entry->stub_sec->flags |= SEC_RELOC;
9006 }
9007
ac2df442
AM		 9008 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9009 {
9010 size = 12;
176a0d42 9011 if (PPC_HA (off) != 0)
ac2df442
AM		 9012 size = 16;
9013 }
9014 else
9015 {
9016 size = 20;
176a0d42 9017 if (PPC_HA (off) != 0)
ac2df442
AM		 9018 size += 4;
9019
9020 if (PPC_HA (r2off) != 0)
9021 size += 4;
9022 }
721956f4 9023 }
84f5d08e
AM		 9024 else if (info->emitrelocations)
9025 {
9026 stub_entry->stub_sec->reloc_count += 1;
9027 stub_entry->stub_sec->flags |= SEC_RELOC;
9028 }
721956f4
AM		 9029 }
9030
eea6121a 9031 stub_entry->stub_sec->size += size;
b34976b6 9032 return TRUE;
721956f4
AM		 9033}
9034
9035/* Set up various things so that we can make a list of input sections
9036 for each output section included in the link. Returns -1 on error,
cedb70c5 9037 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 9038
9039int
4c52953f
AM		 9040ppc64_elf_setup_section_lists (bfd *output_bfd,
9041 struct bfd_link_info *info,
9042 int no_multi_toc)
721956f4
AM		 9043{
9044 bfd *input_bfd;
734b6cf9 9045 int top_id, top_index, id;
721956f4 9046 asection *section;
734b6cf9 9047 asection **input_list;
721956f4
AM		 9048 bfd_size_type amt;
9049 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9050
4c52953f
AM		 9051 htab->no_multi_toc = no_multi_toc;
9052
4ce794b7 9053 if (htab->brlt == NULL)
721956f4
AM		 9054 return 0;
9055
1e2f5b6e 9056 /* Find the top input section id. */
3d6f9012 9057 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 9058 input_bfd != NULL;
9059 input_bfd = input_bfd->link_next)
9060 {
721956f4
AM		 9061 for (section = input_bfd->sections;
9062 section != NULL;
9063 section = section->next)
9064 {
9065 if (top_id < section->id)
9066 top_id = section->id;
9067 }
9068 }
721956f4 9069
8f3bab57 9070 htab->top_id = top_id;
721956f4 9071 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 9072 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 9073 if (htab->stub_group == NULL)
9074 return -1;
9075
3d6f9012
AM		 9076 /* Set toc_off for com, und, abs and ind sections. */
9077 for (id = 0; id < 3; id++)
9078 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 9079
3d6f9012 9080 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 9081
9082 /* We can't use output_bfd->section_count here to find the top output
9083 section index as some sections may have been removed, and
8423293d 9084 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 9085 for (section = output_bfd->sections, top_index = 0;
9086 section != NULL;
9087 section = section->next)
9088 {
9089 if (top_index < section->index)
9090 top_index = section->index;
9091 }
9092
9093 htab->top_index = top_index;
9094 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 9095 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 9096 htab->input_list = input_list;
9097 if (input_list == NULL)
9098 return -1;
9099
721956f4
AM		 9100 return 1;
9101}
9102
e717da7e
AM		 9103/* The linker repeatedly calls this function for each TOC input section
9104 and linker generated GOT section. Group input bfds such that the toc
9105 within a group is less than 64k in size. Will break with cute linker
9106 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 9107
9108void
4ce794b7 9109ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 9110{
9111 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9112
4c52953f
AM		 9113 if (!htab->no_multi_toc)
9114 {
9115 bfd_vma addr = isec->output_offset + isec->output_section->vma;
9116 bfd_vma off = addr - htab->toc_curr;
9117
9118 if (off + isec->size > 0x10000)
9119 htab->toc_curr = addr;
99877b66 9120
4c52953f
AM		 9121 elf_gp (isec->owner) = (htab->toc_curr
9122 - elf_gp (isec->output_section->owner)
9123 + TOC_BASE_OFF);
9124 }
ad8e1ba5
AM		 9125}
9126
9127/* Called after the last call to the above function. */
9128
9129void
4c52953f 9130ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 9131{
9132 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 9133
4c52953f
AM		 9134 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
9135
ad8e1ba5
AM		 9136 /* toc_curr tracks the TOC offset used for code sections below in
9137 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 9138 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 9139}
9140
9b5ecbd0
AM		 9141/* No toc references were found in ISEC. If the code in ISEC makes no
9142 calls, then there's no need to use toc adjusting stubs when branching
9143 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 9144 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9145 needed, and 2 if a cyclical call-graph was found but no other reason
9146 for a stub was detected. If called from the top level, a return of
9147 2 means the same as a return of 0. */
9b5ecbd0
AM		 9148
9149static int
4ce794b7 9150toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 9151{
4c52953f
AM		 9152 Elf_Internal_Rela *relstart, *rel;
9153 Elf_Internal_Sym *local_syms;
9b5ecbd0 9154 int ret;
4c52953f 9155 struct ppc_link_hash_table *htab;
9b5ecbd0 9156
772119ce
AM		 9157 /* We know none of our code bearing sections will need toc stubs. */
9158 if ((isec->flags & SEC_LINKER_CREATED) != 0)
9159 return 0;
9160
eea6121a 9161 if (isec->size == 0)
082c50f8
AM		 9162 return 0;
9163
4c52953f
AM		 9164 if (isec->output_section == NULL)
9165 return 0;
9166
4c52953f
AM		 9167 if (isec->reloc_count == 0)
9168 return 0;
9169
9170 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
9171 info->keep_memory);
9172 if (relstart == NULL)
9173 return -1;
9174
9175 /* Look for branches to outside of this section. */
9176 local_syms = NULL;
9177 ret = 0;
9178 htab = ppc_hash_table (info);
9179 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 9180 {
4c52953f
AM		 9181 enum elf_ppc64_reloc_type r_type;
9182 unsigned long r_symndx;
9183 struct elf_link_hash_entry *h;
9184 Elf_Internal_Sym *sym;
9185 asection *sym_sec;
74f0fb50 9186 struct _opd_sec_data *opd;
4c52953f
AM		 9187 bfd_vma sym_value;
9188 bfd_vma dest;
9189
9190 r_type = ELF64_R_TYPE (rel->r_info);
9191 if (r_type != R_PPC64_REL24
9192 && r_type != R_PPC64_REL14
9193 && r_type != R_PPC64_REL14_BRTAKEN
9194 && r_type != R_PPC64_REL14_BRNTAKEN)
9195 continue;
9196
9197 r_symndx = ELF64_R_SYM (rel->r_info);
9198 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
9199 isec->owner))
9b5ecbd0 9200 {
4c52953f
AM		 9201 ret = -1;
9202 break;
9b5ecbd0 9203 }
9b5ecbd0 9204
2917689a
AM		 9205 /* Calls to dynamic lib functions go through a plt call stub
9206 that uses r2. Branches to undefined symbols might be a call
9207 using old-style dot symbols that can be satisfied by a plt
9208 call into a new-style dynamic library. */
4c52953f 9209 if (sym_sec == NULL)
2917689a
AM		 9210 {
9211 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9212 if (eh != NULL
9213 && eh->oh != NULL
9214 && eh->oh->elf.plt.plist != NULL)
9215 {
9216 ret = 1;
9217 break;
9218 }
4c52953f 9219
2917689a
AM		 9220 /* Ignore other undefined symbols. */
9221 continue;
9222 }
9223
9224 /* Assume branches to other sections not included in the link need
9225 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 9226 if (sym_sec->output_section == NULL)
9227 {
9228 ret = 1;
9229 break;
9230 }
9231
9232 if (h == NULL)
9233 sym_value = sym->st_value;
9234 else
9235 {
9236 if (h->root.type != bfd_link_hash_defined
9237 && h->root.type != bfd_link_hash_defweak)
9238 abort ();
9239 sym_value = h->root.u.def.value;
9240 }
9241 sym_value += rel->r_addend;
9242
9243 /* If this branch reloc uses an opd sym, find the code section. */
74f0fb50
AM		 9244 opd = get_opd_info (sym_sec);
9245 if (opd != NULL)
4c52953f 9246 {
74f0fb50 9247 if (h == NULL && opd->adjust != NULL)
4c52953f
AM		 9248 {
9249 long adjust;
9250
74f0fb50 9251 adjust = opd->adjust[sym->st_value / 8];
4c52953f
AM		 9252 if (adjust == -1)
9253 /* Assume deleted functions won't ever be called. */
9254 continue;
9255 sym_value += adjust;
9256 }
9257
9258 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
9259 if (dest == (bfd_vma) -1)
9260 continue;
9261 }
9262 else
9263 dest = (sym_value
9264 + sym_sec->output_offset
9265 + sym_sec->output_section->vma);
9266
9267 /* Ignore branch to self. */
9268 if (sym_sec == isec)
9269 continue;
9270
9271 /* If the called function uses the toc, we need a stub. */
9272 if (sym_sec->has_toc_reloc
9273 || sym_sec->makes_toc_func_call)
9274 {
9275 ret = 1;
9276 break;
9277 }
9278
9279 /* Assume any branch that needs a long branch stub might in fact
9280 need a plt_branch stub. A plt_branch stub uses r2. */
9281 else if (dest - (isec->output_offset
9282 + isec->output_section->vma
9283 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 9284 {
9285 ret = 1;
9286 break;
9287 }
4c52953f
AM		 9288
9289 /* If calling back to a section in the process of being tested, we
9290 can't say for sure that no toc adjusting stubs are needed, so
9291 don't return zero. */
9292 else if (sym_sec->call_check_in_progress)
9293 ret = 2;
9294
9295 /* Branches to another section that itself doesn't have any TOC
9296 references are OK. Recursively call ourselves to check. */
9297 else if (sym_sec->id <= htab->top_id
9298 && htab->stub_group[sym_sec->id].toc_off == 0)
9299 {
9300 int recur;
9301
9302 /* Mark current section as indeterminate, so that other
9303 sections that call back to current won't be marked as
9304 known. */
9305 isec->call_check_in_progress = 1;
9306 recur = toc_adjusting_stub_needed (info, sym_sec);
9307 isec->call_check_in_progress = 0;
9308
9309 if (recur < 0)
9310 {
9311 /* An error. Exit. */
9312 ret = -1;
9313 break;
9314 }
9315 else if (recur <= 1)
9316 {
9317 /* Known result. Mark as checked and set section flag. */
9318 htab->stub_group[sym_sec->id].toc_off = 1;
9319 if (recur != 0)
9320 {
9321 sym_sec->makes_toc_func_call = 1;
9322 ret = 1;
9323 break;
9324 }
9325 }
9326 else
9327 {
9328 /* Unknown result. Continue checking. */
9329 ret = 2;
9330 }
9331 }
9b5ecbd0
AM		 9332 }
9333
4c52953f 9334 if (local_syms != NULL
0ffa91dd 9335 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
4c52953f
AM		 9336 free (local_syms);
9337 if (elf_section_data (isec)->relocs != relstart)
9338 free (relstart);
9339
9b5ecbd0
AM		 9340 return ret;
9341}
9342
721956f4
AM		 9343/* The linker repeatedly calls this function for each input section,
9344 in the order that input sections are linked into output sections.
9345 Build lists of input sections to determine groupings between which
9346 we may insert linker stubs. */
9347
9b5ecbd0 9348bfd_boolean
4ce794b7 9349ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 9350{
9351 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9352
734b6cf9
AM		 9353 if ((isec->output_section->flags & SEC_CODE) != 0
9354 && isec->output_section->index <= htab->top_index)
721956f4 9355 {
734b6cf9 9356 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9357 /* Steal the link_sec pointer for our list. */
721956f4 9358#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 9359 /* This happens to make the list in reverse order,
9360 which is what we want. */
734b6cf9
AM		 9361 PREV_SEC (isec) = *list;
9362 *list = isec;
721956f4 9363 }
ad8e1ba5 9364
4c52953f 9365 if (htab->multi_toc_needed)
9b5ecbd0 9366 {
4c52953f
AM		 9367 /* If a code section has a function that uses the TOC then we need
9368 to use the right TOC (obviously). Also, make sure that .opd gets
9369 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM		 9370 can't find their function symbol (shouldn't ever happen now).
9371 Also specially treat .fixup for the linux kernel. .fixup
9372 contains branches, but only back to the function that hit an
9373 exception. */
9374 if (isec->has_toc_reloc
9375 || (isec->flags & SEC_CODE) == 0
9376 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM		 9377 {
9378 if (elf_gp (isec->owner) != 0)
9379 htab->toc_curr = elf_gp (isec->owner);
9380 }
9381 else if (htab->stub_group[isec->id].toc_off == 0)
9382 {
9383 int ret = toc_adjusting_stub_needed (info, isec);
9384 if (ret < 0)
9385 return FALSE;
9386 else
9387 isec->makes_toc_func_call = ret & 1;
9388 }
9b5ecbd0 9389 }
ad8e1ba5
AM		 9390
9391 /* Functions that don't use the TOC can belong in any TOC group.
9392 Use the last TOC base. This happens to make _init and _fini
9393 pasting work. */
9394 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9395 return TRUE;
721956f4
AM		 9396}
9397
9398/* See whether we can group stub sections together. Grouping stub
9399 sections may result in fewer stubs. More importantly, we need to
9400 put all .init* and .fini* stubs at the beginning of the .init or
9401 .fini output sections respectively, because glibc splits the
9402 _init and _fini functions into multiple parts. Putting a stub in
9403 the middle of a function is not a good idea. */
9404
9405static void
4ce794b7
AM		 9406group_sections (struct ppc_link_hash_table *htab,
9407 bfd_size_type stub_group_size,
9408 bfd_boolean stubs_always_before_branch)
721956f4 9409{
7c8fe5c4
AM		 9410 asection **list;
9411 bfd_size_type stub14_group_size;
9412 bfd_boolean suppress_size_errors;
9413
9414 suppress_size_errors = FALSE;
9415 stub14_group_size = stub_group_size;
9416 if (stub_group_size == 1)
9417 {
9418 /* Default values. */
9419 if (stubs_always_before_branch)
9420 {
9421 stub_group_size = 0x1e00000;
9422 stub14_group_size = 0x7800;
9423 }
9424 else
9425 {
9426 stub_group_size = 0x1c00000;
9427 stub14_group_size = 0x7000;
9428 }
9429 suppress_size_errors = TRUE;
9430 }
9431
9432 list = htab->input_list + htab->top_index;
734b6cf9 9433 do
721956f4 9434 {
734b6cf9
AM		 9435 asection *tail = *list;
9436 while (tail != NULL)
721956f4 9437 {
734b6cf9
AM		 9438 asection *curr;
9439 asection *prev;
9440 bfd_size_type total;
9441 bfd_boolean big_sec;
9442 bfd_vma curr_toc;
9443
9444 curr = tail;
eea6121a 9445 total = tail->size;
7c8fe5c4
AM		 9446 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9447 ? stub14_group_size : stub_group_size);
9448 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 9449 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9450 tail->owner, tail);
734b6cf9
AM		 9451 curr_toc = htab->stub_group[tail->id].toc_off;
9452
9453 while ((prev = PREV_SEC (curr)) != NULL
9454 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM		 9455 < (ppc64_elf_section_data (prev)->has_14bit_branch
9456 ? stub14_group_size : stub_group_size))
ad8e1ba5 9457 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 9458 curr = prev;
9459
9460 /* OK, the size from the start of CURR to the end is less
9461 than stub_group_size and thus can be handled by one stub
9462 section. (or the tail section is itself larger than
9463 stub_group_size, in which case we may be toast.) We
9464 should really be keeping track of the total size of stubs
9465 added here, as stubs contribute to the final output
9466 section size. That's a little tricky, and this way will
9467 only break if stubs added make the total size more than
9468 2^25, ie. for the default stub_group_size, if stubs total
9469 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9470 do
721956f4
AM		 9471 {
9472 prev = PREV_SEC (tail);
734b6cf9 9473 /* Set up this stub group. */
721956f4
AM		 9474 htab->stub_group[tail->id].link_sec = curr;
9475 }
734b6cf9
AM		 9476 while (tail != curr && (tail = prev) != NULL);
9477
9478 /* But wait, there's more! Input sections up to stub_group_size
9479 bytes before the stub section can be handled by it too.
9480 Don't do this if we have a really large section after the
9481 stubs, as adding more stubs increases the chance that
9482 branches may not reach into the stub section. */
9483 if (!stubs_always_before_branch && !big_sec)
9484 {
9485 total = 0;
9486 while (prev != NULL
9487 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM		 9488 < (ppc64_elf_section_data (prev)->has_14bit_branch
9489 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 9490 && htab->stub_group[prev->id].toc_off == curr_toc)
9491 {
9492 tail = prev;
9493 prev = PREV_SEC (tail);
9494 htab->stub_group[tail->id].link_sec = curr;
9495 }
9496 }
9497 tail = prev;
721956f4
AM		 9498 }
9499 }
734b6cf9
AM		 9500 while (list-- != htab->input_list);
9501 free (htab->input_list);
721956f4
AM		 9502#undef PREV_SEC
9503}
9504
721956f4
AM		 9505/* Determine and set the size of the stub section for a final link.
9506
9507 The basic idea here is to examine all the relocations looking for
9508 PC-relative calls to a target that is unreachable with a "bl"
9509 instruction. */
9510
b34976b6 9511bfd_boolean
4ce794b7 9512ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 9513 struct bfd_link_info *info,
9514 bfd_signed_vma group_size,
9515 asection *(*add_stub_section) (const char *, asection *),
9516 void (*layout_sections_again) (void))
721956f4
AM		 9517{
9518 bfd_size_type stub_group_size;
b34976b6 9519 bfd_boolean stubs_always_before_branch;
721956f4
AM		 9520 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9521
9522 /* Stash our params away. */
721956f4
AM		 9523 htab->add_stub_section = add_stub_section;
9524 htab->layout_sections_again = layout_sections_again;
9525 stubs_always_before_branch = group_size < 0;
9526 if (group_size < 0)
9527 stub_group_size = -group_size;
9528 else
9529 stub_group_size = group_size;
721956f4
AM		 9530
9531 group_sections (htab, stub_group_size, stubs_always_before_branch);
9532
721956f4
AM		 9533 while (1)
9534 {
9535 bfd *input_bfd;
9536 unsigned int bfd_indx;
9537 asection *stub_sec;
721956f4
AM		 9538
9539 htab->stub_iteration += 1;
721956f4
AM		 9540
9541 for (input_bfd = info->input_bfds, bfd_indx = 0;
9542 input_bfd != NULL;
9543 input_bfd = input_bfd->link_next, bfd_indx++)
9544 {
9545 Elf_Internal_Shdr *symtab_hdr;
9546 asection *section;
6cdc0ccc 9547 Elf_Internal_Sym *local_syms = NULL;
721956f4 9548
0c8d6e5c 9549 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 9550 continue;
9551
721956f4 9552 /* We'll need the symbol table in a second. */
0ffa91dd 9553 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 9554 if (symtab_hdr->sh_info == 0)
9555 continue;
9556
721956f4
AM		 9557 /* Walk over each section attached to the input bfd. */
9558 for (section = input_bfd->sections;
9559 section != NULL;
9560 section = section->next)
9561 {
721956f4 9562 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 9563
9564 /* If there aren't any relocs, then there's nothing more
9565 to do. */
9566 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 9567 || (section->flags & SEC_ALLOC) == 0
9568 || (section->flags & SEC_LOAD) == 0
9569 || (section->flags & SEC_CODE) == 0
721956f4
AM		 9570 || section->reloc_count == 0)
9571 continue;
9572
9573 /* If this section is a link-once section that will be
9574 discarded, then don't create any stubs. */
9575 if (section->output_section == NULL
9576 || section->output_section->owner != output_bfd)
9577 continue;
9578
1e2f5b6e
AM		 9579 /* Get the relocs. */
9580 internal_relocs
4ce794b7 9581 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9582 info->keep_memory);
721956f4 9583 if (internal_relocs == NULL)
1e2f5b6e 9584 goto error_ret_free_local;
721956f4
AM		 9585
9586 /* Now examine each relocation. */
9587 irela = internal_relocs;
9588 irelaend = irela + section->reloc_count;
9589 for (; irela < irelaend; irela++)
9590 {
4ce794b7
AM		 9591 enum elf_ppc64_reloc_type r_type;
9592 unsigned int r_indx;
721956f4
AM		 9593 enum ppc_stub_type stub_type;
9594 struct ppc_stub_hash_entry *stub_entry;
8387904d 9595 asection *sym_sec, *code_sec;
721956f4
AM		 9596 bfd_vma sym_value;
9597 bfd_vma destination;
8843416a 9598 bfd_boolean ok_dest;
721956f4 9599 struct ppc_link_hash_entry *hash;
8387904d 9600 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 9601 struct elf_link_hash_entry *h;
9602 Elf_Internal_Sym *sym;
721956f4
AM		 9603 char *stub_name;
9604 const asection *id_sec;
74f0fb50 9605 struct _opd_sec_data *opd;
721956f4
AM		 9606
9607 r_type = ELF64_R_TYPE (irela->r_info);
9608 r_indx = ELF64_R_SYM (irela->r_info);
9609
4ce794b7 9610 if (r_type >= R_PPC64_max)
721956f4
AM		 9611 {
9612 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9613 goto error_ret_free_internal;
721956f4
AM		 9614 }
9615
9616 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 9617 if (r_type != R_PPC64_REL24
9618 && r_type != R_PPC64_REL14
9619 && r_type != R_PPC64_REL14_BRTAKEN
9620 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 9621 continue;
9622
9623 /* Now determine the call target, its name, value,
9624 section. */
411e1bfb
AM		 9625 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9626 r_indx, input_bfd))
9627 goto error_ret_free_internal;
9628 hash = (struct ppc_link_hash_entry *) h;
9629
8843416a 9630 ok_dest = FALSE;
8387904d 9631 fdh = NULL;
7fe2b9a6 9632 sym_value = 0;
411e1bfb 9633 if (hash == NULL)
721956f4 9634 {
411e1bfb 9635 sym_value = sym->st_value;
8843416a 9636 ok_dest = TRUE;
721956f4 9637 }
7fe2b9a6
AM		 9638 else if (hash->elf.root.type == bfd_link_hash_defined
9639 || hash->elf.root.type == bfd_link_hash_defweak)
9640 {
9641 sym_value = hash->elf.root.u.def.value;
9642 if (sym_sec->output_section != NULL)
9643 ok_dest = TRUE;
9644 }
9645 else if (hash->elf.root.type == bfd_link_hash_undefweak
9646 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9647 {
99877b66 9648 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 9649 use the func descriptor sym instead if it is
9650 defined. */
ceb1f1ef 9651 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 9652 && (fdh = get_fdh (hash, htab)) != NULL)
9653 {
8387904d
AM		 9654 if (fdh->elf.root.type == bfd_link_hash_defined
9655 || fdh->elf.root.type == bfd_link_hash_defweak)
9656 {
9657 sym_sec = fdh->elf.root.u.def.section;
9658 sym_value = fdh->elf.root.u.def.value;
9659 if (sym_sec->output_section != NULL)
9660 ok_dest = TRUE;
9661 }
99877b66
AM		 9662 else
9663 fdh = NULL;
8387904d 9664 }
7fe2b9a6
AM		 9665 }
9666 else
9667 {
9668 bfd_set_error (bfd_error_bad_value);
9669 goto error_ret_free_internal;
721956f4
AM		 9670 }
9671
8843416a
AM		 9672 destination = 0;
9673 if (ok_dest)
9674 {
9675 sym_value += irela->r_addend;
9676 destination = (sym_value
9677 + sym_sec->output_offset
9678 + sym_sec->output_section->vma);
9679 }
9680
8387904d 9681 code_sec = sym_sec;
74f0fb50
AM		 9682 opd = get_opd_info (sym_sec);
9683 if (opd != NULL)
8387904d
AM		 9684 {
9685 bfd_vma dest;
9686
74f0fb50 9687 if (hash == NULL && opd->adjust != NULL)
8387904d 9688 {
74f0fb50 9689 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 9690 if (adjust == -1)
9691 continue;
9692 sym_value += adjust;
9693 }
9694 dest = opd_entry_value (sym_sec, sym_value,
9695 &code_sec, &sym_value);
9696 if (dest != (bfd_vma) -1)
9697 {
9698 destination = dest;
9699 if (fdh != NULL)
9700 {
9701 /* Fixup old ABI sym to point at code
9702 entry. */
99877b66 9703 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9704 hash->elf.root.u.def.section = code_sec;
9705 hash->elf.root.u.def.value = sym_value;
9706 }
9707 }
9708 }
9709
721956f4
AM		 9710 /* Determine what (if any) linker stub is needed. */
9711 stub_type = ppc_type_of_stub (section, irela, &hash,
9712 destination);
ad8e1ba5
AM		 9713
9714 if (stub_type != ppc_stub_plt_call)
9715 {
9716 /* Check whether we need a TOC adjusting stub.
9717 Since the linker pastes together pieces from
9718 different object files when creating the
9719 _init and _fini functions, it may be that a
9720 call to what looks like a local sym is in
9721 fact a call needing a TOC adjustment. */
8387904d
AM		 9722 if (code_sec != NULL
9723 && code_sec->output_section != NULL
9724 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9725 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9726 && (code_sec->has_toc_reloc
9727 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9728 stub_type = ppc_stub_long_branch_r2off;
9729 }
9730
721956f4
AM		 9731 if (stub_type == ppc_stub_none)
9732 continue;
9733
411e1bfb
AM		 9734 /* __tls_get_addr calls might be eliminated. */
9735 if (stub_type != ppc_stub_plt_call
9736 && hash != NULL
8387904d
AM		 9737 && (hash == htab->tls_get_addr
9738 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9739 && section->has_tls_reloc
9740 && irela != internal_relocs)
9741 {
9742 /* Get tls info. */
e7b938ca 9743 char *tls_mask;
411e1bfb 9744
0d4792f7 9745 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9746 irela - 1, input_bfd))
9747 goto error_ret_free_internal;
e7b938ca 9748 if (*tls_mask != 0)
411e1bfb
AM		 9749 continue;
9750 }
9751
721956f4
AM		 9752 /* Support for grouping stub sections. */
9753 id_sec = htab->stub_group[section->id].link_sec;
9754
9755 /* Get the name of this stub. */
9756 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9757 if (!stub_name)
9758 goto error_ret_free_internal;
9759
9760 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9761 stub_name, FALSE, FALSE);
721956f4
AM		 9762 if (stub_entry != NULL)
9763 {
9764 /* The proper stub has already been created. */
9765 free (stub_name);
9766 continue;
9767 }
9768
9769 stub_entry = ppc_add_stub (stub_name, section, htab);
9770 if (stub_entry == NULL)
9771 {
9772 free (stub_name);
6cdc0ccc
AM		 9773 error_ret_free_internal:
9774 if (elf_section_data (section)->relocs == NULL)
9775 free (internal_relocs);
9776 error_ret_free_local:
9777 if (local_syms != NULL
9778 && (symtab_hdr->contents
9779 != (unsigned char *) local_syms))
9780 free (local_syms);
b34976b6 9781 return FALSE;
721956f4
AM		 9782 }
9783
ad8e1ba5 9784 stub_entry->stub_type = stub_type;
721956f4 9785 stub_entry->target_value = sym_value;
8387904d 9786 stub_entry->target_section = code_sec;
721956f4 9787 stub_entry->h = hash;
411e1bfb 9788 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9789
9790 if (stub_entry->h != NULL)
9791 htab->stub_globals += 1;
721956f4
AM		 9792 }
9793
9794 /* We're done with the internal relocs, free them. */
6cdc0ccc 9795 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9796 free (internal_relocs);
721956f4 9797 }
6cdc0ccc
AM		 9798
9799 if (local_syms != NULL
9800 && symtab_hdr->contents != (unsigned char *) local_syms)
9801 {
9802 if (!info->keep_memory)
9803 free (local_syms);
9804 else
9805 symtab_hdr->contents = (unsigned char *) local_syms;
9806 }
721956f4
AM		 9807 }
9808
5c3dead3 9809 /* We may have added some stubs. Find out the new size of the
721956f4
AM		 9810 stub sections. */
9811 for (stub_sec = htab->stub_bfd->sections;
9812 stub_sec != NULL;
9813 stub_sec = stub_sec->next)
e717da7e 9814 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9815 {
5c3dead3 9816 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 9817 stub_sec->size = 0;
9818 stub_sec->reloc_count = 0;
84f5d08e 9819 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9820 }
eea6121a
AM		 9821
9822 htab->brlt->size = 0;
84f5d08e
AM		 9823 htab->brlt->reloc_count = 0;
9824 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9825 if (htab->relbrlt != NULL)
eea6121a 9826 htab->relbrlt->size = 0;
721956f4 9827
63bc6f6c 9828 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9829
176a0d42
AM		 9830 if (info->emitrelocations
9831 && htab->glink != NULL && htab->glink->size != 0)
9832 {
9833 htab->glink->reloc_count = 1;
9834 htab->glink->flags |= SEC_RELOC;
9835 }
9836
5c3dead3
AM		 9837 for (stub_sec = htab->stub_bfd->sections;
9838 stub_sec != NULL;
9839 stub_sec = stub_sec->next)
9840 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9841 && stub_sec->rawsize != stub_sec->size)
9842 break;
9843
9844 /* Exit from this loop when no stubs have been added, and no stubs
9845 have changed size. */
9846 if (stub_sec == NULL)
9847 break;
9848
721956f4
AM		 9849 /* Ask the linker to do its stuff. */
9850 (*htab->layout_sections_again) ();
9851 }
9852
c456f082 9853 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9854 section is empty, but it's too late. If we strip sections here,
9855 the dynamic symbol table is corrupted since the section symbol
9856 for the stripped section isn't written. */
721956f4 9857
b34976b6 9858 return TRUE;
721956f4
AM		 9859}
9860
9861/* Called after we have determined section placement. If sections
805fc799 9862 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9863
805fc799 9864bfd_vma
4ce794b7 9865ppc64_elf_toc (bfd *obfd)
721956f4 9866{
805fc799
AM		 9867 asection *s;
9868 bfd_vma TOCstart;
721956f4 9869
805fc799
AM		 9870 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9871 order. The TOC starts where the first of these sections starts. */
9872 s = bfd_get_section_by_name (obfd, ".got");
9873 if (s == NULL)
9874 s = bfd_get_section_by_name (obfd, ".toc");
9875 if (s == NULL)
9876 s = bfd_get_section_by_name (obfd, ".tocbss");
9877 if (s == NULL)
9878 s = bfd_get_section_by_name (obfd, ".plt");
9879 if (s == NULL)
9880 {
9881 /* This may happen for
9882 o references to TOC base (SYM@toc / TOC[tc0]) without a
9883 .toc directive
9884 o bad linker script
9885 o --gc-sections and empty TOC sections
9886
9887 FIXME: Warn user? */
9888
9889 /* Look for a likely section. We probably won't even be
9890 using TOCstart. */
9891 for (s = obfd->sections; s != NULL; s = s->next)
9892 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9893 == (SEC_ALLOC | SEC_SMALL_DATA))
9894 break;
721956f4 9895 if (s == NULL)
805fc799
AM		 9896 for (s = obfd->sections; s != NULL; s = s->next)
9897 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9898 == (SEC_ALLOC | SEC_SMALL_DATA))
9899 break;
721956f4 9900 if (s == NULL)
805fc799
AM		 9901 for (s = obfd->sections; s != NULL; s = s->next)
9902 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9903 break;
721956f4 9904 if (s == NULL)
805fc799
AM		 9905 for (s = obfd->sections; s != NULL; s = s->next)
9906 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9907 break;
9908 }
721956f4 9909
805fc799
AM		 9910 TOCstart = 0;
9911 if (s != NULL)
9912 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9913
805fc799 9914 return TOCstart;
721956f4
AM		 9915}
9916
9917/* Build all the stubs associated with the current output file.
9918 The stubs are kept in a hash table attached to the main linker
9919 hash table. This function is called via gldelf64ppc_finish. */
9920
b34976b6 9921bfd_boolean
4ce794b7
AM		 9922ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9923 struct bfd_link_info *info,
9924 char **stats)
5d1634d7
AM		 9925{
9926 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9927 asection *stub_sec;
5d1634d7 9928 bfd_byte *p;
e717da7e 9929 int stub_sec_count = 0;
5d1634d7 9930
ad8e1ba5 9931 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9932
9933 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9934 for (stub_sec = htab->stub_bfd->sections;
9935 stub_sec != NULL;
9936 stub_sec = stub_sec->next)
eea6121a
AM		 9937 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9938 && stub_sec->size != 0)
e717da7e 9939 {
eea6121a
AM		 9940 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9941 if (stub_sec->contents == NULL)
9942 return FALSE;
9943 /* We want to check that built size is the same as calculated
9944 size. rawsize is a convenient location to use. */
9945 stub_sec->rawsize = stub_sec->size;
9946 stub_sec->size = 0;
e717da7e 9947 }
5d1634d7 9948
23eb7e01 9949 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9950 {
9f951329 9951 unsigned int indx;
ad8e1ba5 9952 bfd_vma plt0;
9f951329 9953
721956f4 9954 /* Build the .glink plt call stub. */
97b639ba
AM		 9955 if (htab->emit_stub_syms)
9956 {
9957 struct elf_link_hash_entry *h;
468392fb
AM		 9958 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
9959 TRUE, FALSE, FALSE);
97b639ba
AM		 9960 if (h == NULL)
9961 return FALSE;
9962 if (h->root.type == bfd_link_hash_new)
9963 {
9964 h->root.type = bfd_link_hash_defined;
9965 h->root.u.def.section = htab->glink;
ee4bf8d2 9966 h->root.u.def.value = 8;
f5385ebf
AM		 9967 h->ref_regular = 1;
9968 h->def_regular = 1;
9969 h->ref_regular_nonweak = 1;
9970 h->forced_local = 1;
9971 h->non_elf = 0;
97b639ba
AM		 9972 }
9973 }
176a0d42
AM		 9974 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
9975 if (info->emitrelocations)
9976 {
9977 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
9978 if (r == NULL)
9979 return FALSE;
9980 r->r_offset = (htab->glink->output_offset
9981 + htab->glink->output_section->vma);
9982 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
9983 r->r_addend = plt0;
9984 }
4ce794b7 9985 p = htab->glink->contents;
176a0d42 9986 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 9987 bfd_put_64 (htab->glink->owner, plt0, p);
9988 p += 8;
9989 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9990 p += 4;
ee4bf8d2 9991 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9992 p += 4;
ee4bf8d2 9993 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9994 p += 4;
ee4bf8d2 9995 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9996 p += 4;
ee4bf8d2 9997 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9998 p += 4;
ee4bf8d2 9999 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 10000 p += 4;
ee4bf8d2 10001 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 10002 p += 4;
4ce794b7 10003 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 10004 p += 4;
4ce794b7 10005 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 10006 p += 4;
4ce794b7 10007 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 10008 p += 4;
4ce794b7 10009 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 10010 p += 4;
ee4bf8d2
AM		 10011 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
10012 {
10013 bfd_put_32 (htab->glink->owner, NOP, p);
10014 p += 4;
10015 }
ad8e1ba5 10016
9f951329
AM		 10017 /* Build the .glink lazy link call stubs. */
10018 indx = 0;
eea6121a 10019 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 10020 {
10021 if (indx < 0x8000)
10022 {
4ce794b7 10023 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 10024 p += 4;
10025 }
10026 else
10027 {
4ce794b7 10028 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 10029 p += 4;
4ce794b7 10030 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 10031 p += 4;
10032 }
4ce794b7 10033 bfd_put_32 (htab->glink->owner,
ee4bf8d2 10034 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 10035 indx++;
9f951329
AM		 10036 p += 4;
10037 }
eea6121a 10038 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 10039 }
5d1634d7 10040
eea6121a 10041 if (htab->brlt->size != 0)
721956f4 10042 {
4ce794b7 10043 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 10044 htab->brlt->size);
4ce794b7 10045 if (htab->brlt->contents == NULL)
b34976b6 10046 return FALSE;
721956f4 10047 }
ee75fd95 10048 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 10049 {
10050 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 10051 htab->relbrlt->size);
63bc6f6c
AM		 10052 if (htab->relbrlt->contents == NULL)
10053 return FALSE;
10054 }
5d1634d7 10055
721956f4
AM		 10056 /* Build the stubs as directed by the stub hash table. */
10057 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 10058
aa8a7074
AM		 10059 if (htab->relbrlt != NULL)
10060 htab->relbrlt->reloc_count = 0;
10061
721956f4
AM		 10062 for (stub_sec = htab->stub_bfd->sections;
10063 stub_sec != NULL;
10064 stub_sec = stub_sec->next)
e717da7e
AM		 10065 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10066 {
10067 stub_sec_count += 1;
eea6121a 10068 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 10069 break;
10070 }
5d1634d7 10071
721956f4 10072 if (stub_sec != NULL
eea6121a 10073 || htab->glink->rawsize != htab->glink->size)
5d1634d7 10074 {
b34976b6 10075 htab->stub_error = TRUE;
721956f4 10076 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 10077 }
721956f4 10078
d2a300cf
AM		 10079 if (htab->stub_error)
10080 return FALSE;
10081
10082 if (stats != NULL)
10083 {
10084 *stats = bfd_malloc (500);
10085 if (*stats == NULL)
10086 return FALSE;
10087
ee75fd95 10088 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 10089 " branch %lu\n"
10090 " toc adjust %lu\n"
10091 " long branch %lu\n"
10092 " long toc adj %lu\n"
10093 " plt call %lu"),
e717da7e 10094 stub_sec_count,
ee75fd95 10095 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 10096 htab->stub_count[ppc_stub_long_branch - 1],
10097 htab->stub_count[ppc_stub_long_branch_r2off - 1],
10098 htab->stub_count[ppc_stub_plt_branch - 1],
10099 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
10100 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 10101 }
10102 return TRUE;
5bd4f169
AM		 10103}
10104
99877b66
AM		 10105/* This function undoes the changes made by add_symbol_adjust. */
10106
10107static bfd_boolean
10108undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10109{
10110 struct ppc_link_hash_entry *eh;
10111
10112 if (h->root.type == bfd_link_hash_indirect)
10113 return TRUE;
10114
10115 if (h->root.type == bfd_link_hash_warning)
10116 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10117
10118 eh = (struct ppc_link_hash_entry *) h;
10119 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
10120 return TRUE;
10121
10122 eh->elf.root.type = bfd_link_hash_undefined;
10123 return TRUE;
10124}
10125
10126void
10127ppc64_elf_restore_symbols (struct bfd_link_info *info)
10128{
10129 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10130 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
10131}
10132
60124e18
AM		 10133/* What to do when ld finds relocations against symbols defined in
10134 discarded sections. */
10135
10136static unsigned int
10137ppc64_elf_action_discarded (asection *sec)
10138{
10139 if (strcmp (".opd", sec->name) == 0)
10140 return 0;
10141
10142 if (strcmp (".toc", sec->name) == 0)
10143 return 0;
10144
bce50a28
JJ		 10145 if (strcmp (".toc1", sec->name) == 0)
10146 return 0;
10147
60124e18
AM		 10148 return _bfd_elf_default_action_discarded (sec);
10149}
10150
5bd4f169
AM		 10151/* The RELOCATE_SECTION function is called by the ELF backend linker
10152 to handle the relocations for a section.
10153
10154 The relocs are always passed as Rela structures; if the section
10155 actually uses Rel structures, the r_addend field will always be
10156 zero.
10157
10158 This function is responsible for adjust the section contents as
10159 necessary, and (if using Rela relocs and generating a
1049f94e 10160 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 10161 necessary.
10162
10163 This function does not have to worry about setting the reloc
10164 address or the reloc symbol index.
10165
10166 LOCAL_SYMS is a pointer to the swapped in local symbols.
10167
10168 LOCAL_SECTIONS is an array giving the section in the input file
10169 corresponding to the st_shndx field of each local symbol.
10170
10171 The global hash table entry for the global symbols can be found
10172 via elf_sym_hashes (input_bfd).
10173
1049f94e 10174 When generating relocatable output, this function must handle
5bd4f169
AM		 10175 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10176 going to be the section symbol corresponding to the output
10177 section, which means that the addend must be adjusted
10178 accordingly. */
10179
b34976b6 10180static bfd_boolean
4ce794b7
AM		 10181ppc64_elf_relocate_section (bfd *output_bfd,
10182 struct bfd_link_info *info,
10183 bfd *input_bfd,
10184 asection *input_section,
10185 bfd_byte *contents,
10186 Elf_Internal_Rela *relocs,
10187 Elf_Internal_Sym *local_syms,
10188 asection **local_sections)
5bd4f169 10189{
65f38f15 10190 struct ppc_link_hash_table *htab;
5bd4f169
AM		 10191 Elf_Internal_Shdr *symtab_hdr;
10192 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 10193 Elf_Internal_Rela *rel;
10194 Elf_Internal_Rela *relend;
411e1bfb
AM		 10195 Elf_Internal_Rela outrel;
10196 bfd_byte *loc;
411e1bfb 10197 struct got_entry **local_got_ents;
5bd4f169 10198 bfd_vma TOCstart;
b34976b6
AM		 10199 bfd_boolean ret = TRUE;
10200 bfd_boolean is_opd;
96e0dda4 10201 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 10202 bfd_boolean is_power4 = FALSE;
4fe5ca5b 10203 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 10204
65f38f15 10205 /* Initialize howto table if needed. */
5bd4f169 10206 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 10207 ppc_howto_init ();
10208
65f38f15 10209 htab = ppc_hash_table (info);
ee75fd95
AM		 10210
10211 /* Don't relocate stub sections. */
10212 if (input_section->owner == htab->stub_bfd)
10213 return TRUE;
10214
0c8d6e5c 10215 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 10216
411e1bfb 10217 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 10218 TOCstart = elf_gp (output_bfd);
0ffa91dd 10219 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 10220 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 10221 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 10222
5bd4f169
AM		 10223 rel = relocs;
10224 relend = relocs + input_section->reloc_count;
10225 for (; rel < relend; rel++)
10226 {
04c9666a 10227 enum elf_ppc64_reloc_type r_type;
4cc603a5 10228 bfd_vma addend, orig_addend;
5bd4f169
AM		 10229 bfd_reloc_status_type r;
10230 Elf_Internal_Sym *sym;
10231 asection *sec;
039b3fef
AM		 10232 struct elf_link_hash_entry *h_elf;
10233 struct ppc_link_hash_entry *h;
10234 struct ppc_link_hash_entry *fdh;
5bd4f169 10235 const char *sym_name;
0d4792f7 10236 unsigned long r_symndx, toc_symndx;
951fd09b 10237 char tls_mask, tls_gd, tls_type;
0d4792f7 10238 char sym_type;
5bd4f169 10239 bfd_vma relocation;
b34976b6
AM		 10240 bfd_boolean unresolved_reloc;
10241 bfd_boolean warned;
50bc7936 10242 unsigned long insn, mask;
721956f4
AM		 10243 struct ppc_stub_hash_entry *stub_entry;
10244 bfd_vma max_br_offset;
10245 bfd_vma from;
5bd4f169 10246
4ce794b7 10247 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 10248 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 10249
10250 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10251 symbol of the previous ADDR64 reloc. The symbol gives us the
10252 proper TOC base to use. */
10253 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
10254 && rel != relocs
10255 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
10256 && is_opd)
10257 r_symndx = ELF64_R_SYM (rel[-1].r_info);
10258
4ce794b7
AM		 10259 sym = NULL;
10260 sec = NULL;
039b3fef 10261 h_elf = NULL;
4ce794b7 10262 sym_name = NULL;
b34976b6
AM		 10263 unresolved_reloc = FALSE;
10264 warned = FALSE;
4cc603a5 10265 orig_addend = rel->r_addend;
65f38f15 10266
0b13192e 10267 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 10268 {
10269 /* It's a local symbol. */
74f0fb50 10270 struct _opd_sec_data *opd;
4025353c 10271
5bd4f169
AM		 10272 sym = local_syms + r_symndx;
10273 sec = local_sections[r_symndx];
26c61ae5 10274 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 10275 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 10276 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 10277 opd = get_opd_info (sec);
10278 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 10279 {
74f0fb50 10280 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 10281 if (adjust == -1)
10282 relocation = 0;
10283 else
4cc603a5
AM		 10284 {
10285 /* If this is a relocation against the opd section sym
10286 and we have edited .opd, adjust the reloc addend so
10287 that ld -r and ld --emit-relocs output is correct.
10288 If it is a reloc against some other .opd symbol,
10289 then the symbol value will be adjusted later. */
10290 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
10291 rel->r_addend += adjust;
10292 else
10293 relocation += adjust;
10294 }
1e2f5b6e 10295 }
5bd4f169
AM		 10296 }
10297 else
10298 {
b2a8e766
AM		 10299 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
10300 r_symndx, symtab_hdr, sym_hashes,
039b3fef 10301 h_elf, sec, relocation,
b2a8e766 10302 unresolved_reloc, warned);
039b3fef
AM		 10303 sym_name = h_elf->root.root.string;
10304 sym_type = h_elf->type;
5bd4f169 10305 }
039b3fef 10306 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 10307
ab96bf03
AM		 10308 if (sec != NULL && elf_discarded_section (sec))
10309 {
10310 /* For relocs against symbols from removed linkonce sections,
10311 or sections discarded by a linker script, we just want the
10312 section contents zeroed. Avoid any special processing. */
10313 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10314 contents + rel->r_offset);
10315 rel->r_info = 0;
10316 rel->r_addend = 0;
10317 continue;
10318 }
10319
10320 if (info->relocatable)
10321 continue;
10322
951fd09b
AM		 10323 /* TLS optimizations. Replace instruction sequences and relocs
10324 based on information we collected in tls_optimize. We edit
10325 RELOCS so that --emit-relocs will output something sensible
10326 for the final instruction stream. */
10327 tls_mask = 0;
10328 tls_gd = 0;
0d4792f7 10329 toc_symndx = 0;
d881513a 10330 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 10331 {
10332 if (h != NULL)
039b3fef 10333 tls_mask = h->tls_mask;
411e1bfb
AM		 10334 else if (local_got_ents != NULL)
10335 {
e7b938ca
AM		 10336 char *lgot_masks;
10337 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10338 tls_mask = lgot_masks[r_symndx];
411e1bfb 10339 }
0d4792f7
AM		 10340 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10341 {
10342 /* Check for toc tls entries. */
10343 char *toc_tls;
10344
10345 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10346 rel, input_bfd))
10347 return FALSE;
10348
10349 if (toc_tls)
10350 tls_mask = *toc_tls;
10351 }
10352 }
10353
10354 /* Check that tls relocs are used with tls syms, and non-tls
10355 relocs are used with non-tls syms. */
10356 if (r_symndx != 0
10357 && r_type != R_PPC64_NONE
10358 && (h == NULL
039b3fef
AM		 10359 || h->elf.root.type == bfd_link_hash_defined
10360 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 10361 && (IS_PPC64_TLS_RELOC (r_type)
10362 != (sym_type == STT_TLS
10363 || (sym_type == STT_SECTION
10364 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7
AM		 10365 {
10366 if (r_type == R_PPC64_TLS && tls_mask != 0)
10367 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10368 ;
10369 else
10370 (*_bfd_error_handler)
1d483afe 10371 (!IS_PPC64_TLS_RELOC (r_type)
d003868e
AM		 10372 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10373 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10374 input_bfd,
10375 input_section,
0d4792f7
AM		 10376 (long) rel->r_offset,
10377 ppc64_elf_howto_table[r_type]->name,
10378 sym_name);
411e1bfb
AM		 10379 }
10380
10381 /* Ensure reloc mapping code below stays sane. */
10382 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10383 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10384 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10385 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10386 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10387 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10388 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10389 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10390 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10391 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10392 abort ();
0d4792f7 10393
411e1bfb
AM		 10394 switch (r_type)
10395 {
10396 default:
411e1bfb
AM		 10397 break;
10398
10399 case R_PPC64_TOC16:
10400 case R_PPC64_TOC16_LO:
10401 case R_PPC64_TOC16_DS:
10402 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 10403 {
10404 /* Check for toc tls entries. */
10405 char *toc_tls;
951fd09b 10406 int retval;
411e1bfb 10407
0d4792f7
AM		 10408 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10409 rel, input_bfd);
951fd09b 10410 if (retval == 0)
411e1bfb
AM		 10411 return FALSE;
10412
10413 if (toc_tls)
10414 {
951fd09b 10415 tls_mask = *toc_tls;
411e1bfb
AM		 10416 if (r_type == R_PPC64_TOC16_DS
10417 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 10418 {
10419 if (tls_mask != 0
10420 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10421 goto toctprel;
10422 }
411e1bfb 10423 else
951fd09b
AM		 10424 {
10425 /* If we found a GD reloc pair, then we might be
10426 doing a GD->IE transition. */
10427 if (retval == 2)
10428 {
10429 tls_gd = TLS_TPRELGD;
10430 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10431 goto tls_ldgd_opt;
951fd09b
AM		 10432 }
10433 else if (retval == 3)
10434 {
10435 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 10436 goto tls_ldgd_opt;
951fd09b
AM		 10437 }
10438 }
411e1bfb
AM		 10439 }
10440 }
10441 break;
10442
10443 case R_PPC64_GOT_TPREL16_DS:
10444 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 10445 if (tls_mask != 0
10446 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10447 {
81407a69 10448 toctprel:
4fe5ca5b 10449 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 10450 insn &= 31 << 21;
10451 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10452 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10453 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 10454 if (toc_symndx != 0)
10455 {
10456 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10457 /* We changed the symbol. Start over in order to
10458 get h, sym, sec etc. right. */
10459 rel--;
10460 continue;
10461 }
10462 else
10463 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10464 }
10465 break;
10466
10467 case R_PPC64_TLS:
951fd09b
AM		 10468 if (tls_mask != 0
10469 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10470 {
50bc7936 10471 bfd_vma rtra;
411e1bfb 10472 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10473 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 10474 == ((31 << 26) | (13 << 11)))
10475 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10476 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 10477 == ((31 << 26) | (13 << 16)))
10478 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10479 else
10480 abort ();
10481 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10482 /* add -> addi. */
10483 insn = 14 << 26;
10484 else if ((insn & (31 << 1)) == 23 << 1
10485 && ((insn & (31 << 6)) < 14 << 6
10486 || ((insn & (31 << 6)) >= 16 << 6
10487 && (insn & (31 << 6)) < 24 << 6)))
10488 /* load and store indexed -> dform. */
10489 insn = (32 | ((insn >> 6) & 31)) << 26;
10490 else if ((insn & (31 << 1)) == 21 << 1
10491 && (insn & (0x1a << 6)) == 0)
10492 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10493 insn = (((58 | ((insn >> 6) & 4)) << 26)
10494 | ((insn >> 6) & 1));
10495 else if ((insn & (31 << 1)) == 21 << 1
10496 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10497 /* lwax -> lwa. */
10498 insn = (58 << 26) | 2;
10499 else
10500 abort ();
10501 insn |= rtra;
10502 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10503 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 10504 PPC64_TPREL16_LO which is at low-order half-word. */
10505 rel->r_offset += d_offset;
0d4792f7
AM		 10506 r_type = R_PPC64_TPREL16_LO;
10507 if (toc_symndx != 0)
10508 {
10509 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10510 /* We changed the symbol. Start over in order to
10511 get h, sym, sec etc. right. */
10512 rel--;
10513 continue;
10514 }
10515 else
10516 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10517 }
10518 break;
10519
411e1bfb
AM		 10520 case R_PPC64_GOT_TLSGD16_HI:
10521 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 10522 tls_gd = TLS_TPRELGD;
10523 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10524 goto tls_gdld_hi;
10525 break;
10526
411e1bfb
AM		 10527 case R_PPC64_GOT_TLSLD16_HI:
10528 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10529 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10530 {
951fd09b
AM		 10531 tls_gdld_hi:
10532 if ((tls_mask & tls_gd) != 0)
10533 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10534 + R_PPC64_GOT_TPREL16_DS);
10535 else
411e1bfb 10536 {
951fd09b 10537 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10538 rel->r_offset -= d_offset;
951fd09b 10539 r_type = R_PPC64_NONE;
411e1bfb 10540 }
951fd09b 10541 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10542 }
10543 break;
10544
951fd09b
AM		 10545 case R_PPC64_GOT_TLSGD16:
10546 case R_PPC64_GOT_TLSGD16_LO:
10547 tls_gd = TLS_TPRELGD;
10548 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10549 goto tls_ldgd_opt;
951fd09b 10550 break;
411e1bfb 10551
951fd09b
AM		 10552 case R_PPC64_GOT_TLSLD16:
10553 case R_PPC64_GOT_TLSLD16_LO:
10554 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10555 {
102890f0
AM		 10556 bfd_vma insn1, insn2, insn3;
10557 bfd_vma offset;
10558
10559 tls_ldgd_opt:
10560 /* We know that the next reloc is on a tls_get_addr
10561 call, since ppc64_elf_tls_optimize checks this. */
10562 offset = rel[1].r_offset;
10563 insn1 = bfd_get_32 (output_bfd,
10564 contents + rel->r_offset - d_offset);
10565 insn3 = bfd_get_32 (output_bfd,
10566 contents + offset + 4);
10567 if ((tls_mask & tls_gd) != 0)
411e1bfb 10568 {
102890f0
AM		 10569 /* IE */
10570 insn1 &= (1 << 26) - (1 << 2);
10571 insn1 |= 58 << 26; /* ld */
10572 insn2 = 0x7c636a14; /* add 3,3,13 */
10573 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
10574 R_PPC64_NONE);
10575 if ((tls_mask & TLS_EXPLICIT) == 0)
10576 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10577 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 10578 else
102890f0
AM		 10579 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10580 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10581 }
10582 else
10583 {
10584 /* LE */
10585 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10586 insn2 = 0x38630000; /* addi 3,3,0 */
10587 if (tls_gd == 0)
951fd09b 10588 {
102890f0 10589 /* Was an LD reloc. */
1d483afe
AM		 10590 if (toc_symndx)
10591 sec = local_sections[toc_symndx];
10592 for (r_symndx = 0;
10593 r_symndx < symtab_hdr->sh_info;
10594 r_symndx++)
10595 if (local_sections[r_symndx] == sec)
10596 break;
10597 if (r_symndx >= symtab_hdr->sh_info)
10598 r_symndx = 0;
102890f0 10599 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM		 10600 if (r_symndx != 0)
10601 rel->r_addend -= (local_syms[r_symndx].st_value
10602 + sec->output_offset
10603 + sec->output_section->vma);
10604 rel[1].r_addend = rel->r_addend;
951fd09b 10605 }
102890f0
AM		 10606 else if (toc_symndx != 0)
10607 r_symndx = toc_symndx;
10608 r_type = R_PPC64_TPREL16_HA;
10609 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10610 rel[1].r_info = ELF64_R_INFO (r_symndx,
10611 R_PPC64_TPREL16_LO);
10612 rel[1].r_offset += d_offset;
10613 }
10614 if (insn3 == NOP
10615 || insn3 == CROR_151515 || insn3 == CROR_313131)
10616 {
10617 insn3 = insn2;
10618 insn2 = NOP;
10619 rel[1].r_offset += 4;
10620 }
10621 bfd_put_32 (output_bfd, insn1,
10622 contents + rel->r_offset - d_offset);
10623 bfd_put_32 (output_bfd, insn2, contents + offset);
10624 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10625 if (tls_gd == 0 || toc_symndx != 0)
10626 {
10627 /* We changed the symbol. Start over in order
10628 to get h, sym, sec etc. right. */
10629 rel--;
10630 continue;
411e1bfb 10631 }
411e1bfb 10632 }
411e1bfb
AM		 10633 break;
10634
10635 case R_PPC64_DTPMOD64:
951fd09b
AM		 10636 if (rel + 1 < relend
10637 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10638 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10639 {
951fd09b
AM		 10640 if ((tls_mask & TLS_GD) == 0)
10641 {
10642 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10643 if ((tls_mask & TLS_TPRELGD) != 0)
10644 r_type = R_PPC64_TPREL64;
10645 else
10646 {
4ce794b7 10647 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 10648 r_type = R_PPC64_NONE;
10649 }
10650 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10651 }
10652 }
10653 else
10654 {
10655 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10656 {
4ce794b7 10657 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10658 r_type = R_PPC64_NONE;
951fd09b 10659 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10660 }
411e1bfb
AM		 10661 }
10662 break;
10663
10664 case R_PPC64_TPREL64:
951fd09b 10665 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 10666 {
10667 r_type = R_PPC64_NONE;
10668 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10669 }
10670 break;
10671 }
10672
10673 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10674 insn = 0;
b25116a9
AM		 10675 max_br_offset = 1 << 25;
10676 addend = rel->r_addend;
65f38f15 10677 switch (r_type)
5bd4f169
AM		 10678 {
10679 default:
65f38f15 10680 break;
5bd4f169 10681
65f38f15
AM		 10682 /* Branch taken prediction relocations. */
10683 case R_PPC64_ADDR14_BRTAKEN:
10684 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 10685 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10686 /* Fall thru. */
65f38f15 10687
86c76c7b 10688 /* Branch not taken prediction relocations. */
65f38f15
AM		 10689 case R_PPC64_ADDR14_BRNTAKEN:
10690 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 10691 insn |= bfd_get_32 (output_bfd,
10692 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10693 /* Fall thru. */
86c76c7b 10694
b25116a9
AM		 10695 case R_PPC64_REL14:
10696 max_br_offset = 1 << 15;
10697 /* Fall thru. */
5bd4f169 10698
65f38f15 10699 case R_PPC64_REL24:
ad8e1ba5
AM		 10700 /* Calls to functions with a different TOC, such as calls to
10701 shared objects, need to alter the TOC pointer. This is
10702 done using a linkage stub. A REL24 branching to these
10703 linkage stubs needs to be followed by a nop, as the nop
10704 will be replaced with an instruction to restore the TOC
10705 base pointer. */
b25116a9 10706 stub_entry = NULL;
8387904d 10707 fdh = h;
ad8e1ba5 10708 if (((h != NULL
039b3fef
AM		 10709 && (((fdh = h->oh) != NULL
10710 && fdh->elf.plt.plist != NULL)
10711 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10712 || (sec != NULL
ad8e1ba5 10713 && sec->output_section != NULL
b25116a9 10714 && sec->id <= htab->top_id
ad8e1ba5
AM		 10715 && (htab->stub_group[sec->id].toc_off
10716 != htab->stub_group[input_section->id].toc_off)))
721956f4 10717 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 10718 rel, htab)) != NULL
10719 && (stub_entry->stub_type == ppc_stub_plt_call
10720 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10721 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10722 {
b25116a9 10723 bfd_boolean can_plt_call = FALSE;
721956f4 10724
eea6121a 10725 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10726 {
b25116a9
AM		 10727 unsigned long nop;
10728 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10729 if (nop == NOP
10730 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10731 {
4ce794b7 10732 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10733 contents + rel->r_offset + 4);
b25116a9 10734 can_plt_call = TRUE;
41bd81ab 10735 }
5bd4f169 10736 }
721956f4
AM		 10737
10738 if (!can_plt_call)
10739 {
ad8e1ba5
AM		 10740 if (stub_entry->stub_type == ppc_stub_plt_call)
10741 {
10742 /* If this is a plain branch rather than a branch
4fa1c237
AM		 10743 and link, don't require a nop. However, don't
10744 allow tail calls in a shared library as they
10745 will result in r2 being corrupted. */
b25116a9
AM		 10746 unsigned long br;
10747 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10748 if (info->executable && (br & 1) == 0)
b25116a9 10749 can_plt_call = TRUE;
15b552e9
AM		 10750 else
10751 stub_entry = NULL;
ad8e1ba5 10752 }
6ab189d5 10753 else if (h != NULL
039b3fef 10754 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10755 ".__libc_start_main") == 0)
10756 {
10757 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10758 can_plt_call = TRUE;
6ab189d5 10759 }
ad8e1ba5
AM		 10760 else
10761 {
10762 if (strcmp (input_section->output_section->name,
10763 ".init") == 0
10764 || strcmp (input_section->output_section->name,
10765 ".fini") == 0)
10766 (*_bfd_error_handler)
d003868e 10767 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10768 "not supported using your crt files; "
10769 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10770 input_bfd,
10771 input_section,
ad8e1ba5
AM		 10772 (long) rel->r_offset);
10773 else
10774 (*_bfd_error_handler)
d003868e 10775 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10776 "does not allow automatic multiple TOCs; "
10777 "recompile with -mminimal-toc or "
10778 "-fno-optimize-sibling-calls, "
10779 "or make `%s' extern"),
d003868e
AM		 10780 input_bfd,
10781 input_section,
ad8e1ba5
AM		 10782 (long) rel->r_offset,
10783 sym_name,
10784 sym_name);
10785 bfd_set_error (bfd_error_bad_value);
10786 ret = FALSE;
10787 }
721956f4
AM		 10788 }
10789
b25116a9
AM		 10790 if (can_plt_call
10791 && stub_entry->stub_type == ppc_stub_plt_call)
10792 unresolved_reloc = FALSE;
10793 }
10794
8387904d
AM		 10795 if (stub_entry == NULL
10796 && get_opd_info (sec) != NULL)
10797 {
10798 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 10799 bfd_vma off = (relocation + addend
10800 - sec->output_section->vma
10801 - sec->output_offset);
8387904d
AM		 10802 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10803 if (dest != (bfd_vma) -1)
10804 {
10805 relocation = dest;
10806 addend = 0;
10807 }
10808 }
10809
b25116a9
AM		 10810 /* If the branch is out of reach we ought to have a long
10811 branch stub. */
10812 from = (rel->r_offset
10813 + input_section->output_offset
10814 + input_section->output_section->vma);
10815
10816 if (stub_entry == NULL
4cc603a5 10817 && (relocation + addend - from + max_br_offset
b25116a9
AM		 10818 >= 2 * max_br_offset)
10819 && r_type != R_PPC64_ADDR14_BRTAKEN
10820 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10821 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10822 htab);
b25116a9
AM		 10823
10824 if (stub_entry != NULL)
10825 {
10826 /* Munge up the value and addend so that we call the stub
10827 rather than the procedure directly. */
10828 relocation = (stub_entry->stub_offset
10829 + stub_entry->stub_sec->output_offset
10830 + stub_entry->stub_sec->output_section->vma);
10831 addend = 0;
10832 }
10833
10834 if (insn != 0)
10835 {
10836 if (is_power4)
721956f4 10837 {
b25116a9
AM		 10838 /* Set 'a' bit. This is 0b00010 in BO field for branch
10839 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10840 for branch on CTR insns (BO == 1a00t or 1a01t). */
10841 if ((insn & (0x14 << 21)) == (0x04 << 21))
10842 insn |= 0x02 << 21;
10843 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10844 insn |= 0x08 << 21;
10845 else
10846 break;
10847 }
10848 else
10849 {
10850 /* Invert 'y' bit if not the default. */
4cc603a5 10851 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10852 insn ^= 0x01 << 21;
721956f4 10853 }
b25116a9
AM		 10854
10855 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10856 }
e86ce104 10857
06da1e8e
AM		 10858 /* NOP out calls to undefined weak functions.
10859 We can thus call a weak function without first
10860 checking whether the function is defined. */
b25116a9 10861 else if (h != NULL
039b3fef 10862 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10863 && r_type == R_PPC64_REL24
10864 && relocation == 0
4cc603a5 10865 && addend == 0)
e86ce104 10866 {
06da1e8e
AM		 10867 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10868 continue;
e86ce104 10869 }
65f38f15
AM		 10870 break;
10871 }
5bd4f169 10872
65f38f15 10873 /* Set `addend'. */
411e1bfb 10874 tls_type = 0;
65f38f15
AM		 10875 switch (r_type)
10876 {
10877 default:
10878 (*_bfd_error_handler)
d003868e
AM		 10879 (_("%B: unknown relocation type %d for symbol %s"),
10880 input_bfd, (int) r_type, sym_name);
5bd4f169 10881
65f38f15 10882 bfd_set_error (bfd_error_bad_value);
b34976b6 10883 ret = FALSE;
65f38f15 10884 continue;
5bd4f169 10885
65f38f15 10886 case R_PPC64_NONE:
411e1bfb 10887 case R_PPC64_TLS:
04c9666a
AM		 10888 case R_PPC64_GNU_VTINHERIT:
10889 case R_PPC64_GNU_VTENTRY:
65f38f15 10890 continue;
5bd4f169
AM		 10891
10892 /* GOT16 relocations. Like an ADDR16 using the symbol's
10893 address in the GOT as relocation value instead of the
411e1bfb 10894 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10895 symbol and put the symbol value there. */
411e1bfb
AM		 10896 case R_PPC64_GOT_TLSGD16:
10897 case R_PPC64_GOT_TLSGD16_LO:
10898 case R_PPC64_GOT_TLSGD16_HI:
10899 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10900 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10901 goto dogot;
10902
10903 case R_PPC64_GOT_TLSLD16:
10904 case R_PPC64_GOT_TLSLD16_LO:
10905 case R_PPC64_GOT_TLSLD16_HI:
10906 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10907 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10908 goto dogot;
10909
10910 case R_PPC64_GOT_TPREL16_DS:
10911 case R_PPC64_GOT_TPREL16_LO_DS:
10912 case R_PPC64_GOT_TPREL16_HI:
10913 case R_PPC64_GOT_TPREL16_HA:
10914 tls_type = TLS_TLS | TLS_TPREL;
10915 goto dogot;
10916
10917 case R_PPC64_GOT_DTPREL16_DS:
10918 case R_PPC64_GOT_DTPREL16_LO_DS:
10919 case R_PPC64_GOT_DTPREL16_HI:
10920 case R_PPC64_GOT_DTPREL16_HA:
10921 tls_type = TLS_TLS | TLS_DTPREL;
10922 goto dogot;
10923
65f38f15
AM		 10924 case R_PPC64_GOT16:
10925 case R_PPC64_GOT16_LO:
10926 case R_PPC64_GOT16_HI:
10927 case R_PPC64_GOT16_HA:
10928 case R_PPC64_GOT16_DS:
10929 case R_PPC64_GOT16_LO_DS:
411e1bfb 10930 dogot:
5bd4f169
AM		 10931 {
10932 /* Relocation is to the entry for this symbol in the global
10933 offset table. */
e717da7e 10934 asection *got;
d881513a 10935 bfd_vma *offp;
5bd4f169 10936 bfd_vma off;
d881513a 10937 unsigned long indx = 0;
65f38f15 10938
d881513a
AM		 10939 if (tls_type == (TLS_TLS | TLS_LD)
10940 && (h == NULL
f5385ebf 10941 || !h->elf.def_dynamic))
e717da7e 10942 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10943 else
5bd4f169 10944 {
d881513a 10945 struct got_entry *ent;
5bd4f169 10946
d881513a
AM		 10947 if (h != NULL)
10948 {
10949 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10950 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10951 &h->elf)
d881513a 10952 || (info->shared
039b3fef 10953 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10954 /* This is actually a static link, or it is a
10955 -Bsymbolic link and the symbol is defined
10956 locally, or the symbol was forced to be local
10957 because of a version file. */
10958 ;
10959 else
10960 {
039b3fef 10961 indx = h->elf.dynindx;
d881513a
AM		 10962 unresolved_reloc = FALSE;
10963 }
039b3fef 10964 ent = h->elf.got.glist;
d881513a 10965 }
411e1bfb 10966 else
5bd4f169 10967 {
d881513a
AM		 10968 if (local_got_ents == NULL)
10969 abort ();
10970 ent = local_got_ents[r_symndx];
5bd4f169 10971 }
d881513a
AM		 10972
10973 for (; ent != NULL; ent = ent->next)
4cc603a5 10974 if (ent->addend == orig_addend
e717da7e 10975 && ent->owner == input_bfd
d881513a
AM		 10976 && ent->tls_type == tls_type)
10977 break;
10978 if (ent == NULL)
10979 abort ();
10980 offp = &ent->got.offset;
5bd4f169 10981 }
411e1bfb 10982
e717da7e
AM		 10983 got = ppc64_elf_tdata (input_bfd)->got;
10984 if (got == NULL)
10985 abort ();
10986
411e1bfb
AM		 10987 /* The offset must always be a multiple of 8. We use the
10988 least significant bit to record whether we have already
10989 processed this entry. */
d881513a 10990 off = *offp;
411e1bfb
AM		 10991 if ((off & 1) != 0)
10992 off &= ~1;
5bd4f169
AM		 10993 else
10994 {
411e1bfb
AM		 10995 /* Generate relocs for the dynamic linker, except in
10996 the case of TLSLD where we'll use one entry per
10997 module. */
e717da7e
AM		 10998 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10999
d881513a 11000 *offp = off | 1;
4e795f50
AM		 11001 if ((info->shared || indx != 0)
11002 && (h == NULL
039b3fef
AM		 11003 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11004 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 11005 {
e717da7e
AM		 11006 outrel.r_offset = (got->output_section->vma
11007 + got->output_offset
411e1bfb 11008 + off);
4cc603a5 11009 outrel.r_addend = addend;
d881513a 11010 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 11011 {
411e1bfb 11012 outrel.r_addend = 0;
e515b051 11013 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 11014 if (tls_type == (TLS_TLS | TLS_GD))
11015 {
e717da7e
AM		 11016 loc = relgot->contents;
11017 loc += (relgot->reloc_count++
d881513a
AM		 11018 * sizeof (Elf64_External_Rela));
11019 bfd_elf64_swap_reloca_out (output_bfd,
11020 &outrel, loc);
e515b051 11021 outrel.r_offset += 8;
4cc603a5 11022 outrel.r_addend = addend;
d881513a
AM		 11023 outrel.r_info
11024 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 11025 }
411e1bfb 11026 }
951fd09b 11027 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 11028 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 11029 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 11030 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
11031 else if (indx == 0)
81407a69
AM		 11032 {
11033 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
11034
11035 /* Write the .got section contents for the sake
11036 of prelink. */
e717da7e 11037 loc = got->contents + off;
23fbd6fa
JJ		 11038 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
11039 loc);
81407a69 11040 }
411e1bfb
AM		 11041 else
11042 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 11043
11044 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 11045 {
11046 outrel.r_addend += relocation;
11047 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 11048 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 11049 }
e717da7e
AM		 11050 loc = relgot->contents;
11051 loc += (relgot->reloc_count++
411e1bfb
AM		 11052 * sizeof (Elf64_External_Rela));
11053 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11054 }
11055
ad8e1ba5 11056 /* Init the .got section contents here if we're not
81407a69 11057 emitting a reloc. */
d881513a 11058 else
411e1bfb 11059 {
4cc603a5 11060 relocation += addend;
7b609f53
AM		 11061 if (tls_type == (TLS_TLS | TLS_LD))
11062 relocation = 1;
11063 else if (tls_type != 0)
411e1bfb 11064 {
e1918d23 11065 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 11066 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 11067 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 11068
7b609f53
AM		 11069 if (tls_type == (TLS_TLS | TLS_GD))
11070 {
11071 bfd_put_64 (output_bfd, relocation,
e717da7e 11072 got->contents + off + 8);
7b609f53
AM		 11073 relocation = 1;
11074 }
411e1bfb 11075 }
7b609f53 11076
411e1bfb 11077 bfd_put_64 (output_bfd, relocation,
e717da7e 11078 got->contents + off);
5bd4f169
AM		 11079 }
11080 }
11081
65f38f15
AM		 11082 if (off >= (bfd_vma) -2)
11083 abort ();
11084
e717da7e 11085 relocation = got->output_offset + off;
65f38f15 11086
5bd4f169 11087 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 11088 addend = -TOC_BASE_OFF;
5bd4f169 11089 }
65f38f15
AM		 11090 break;
11091
11092 case R_PPC64_PLT16_HA:
11093 case R_PPC64_PLT16_HI:
11094 case R_PPC64_PLT16_LO:
11095 case R_PPC64_PLT32:
11096 case R_PPC64_PLT64:
11097 /* Relocation is to the entry for this symbol in the
11098 procedure linkage table. */
11099
11100 /* Resolve a PLT reloc against a local symbol directly,
11101 without using the procedure linkage table. */
11102 if (h == NULL)
11103 break;
11104
411e1bfb
AM		 11105 /* It's possible that we didn't make a PLT entry for this
11106 symbol. This happens when statically linking PIC code,
11107 or when using -Bsymbolic. Go find a match if there is a
11108 PLT entry. */
4ce794b7 11109 if (htab->plt != NULL)
65f38f15 11110 {
411e1bfb 11111 struct plt_entry *ent;
039b3fef 11112 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 11113 if (ent->addend == orig_addend
411e1bfb
AM		 11114 && ent->plt.offset != (bfd_vma) -1)
11115 {
4ce794b7
AM		 11116 relocation = (htab->plt->output_section->vma
11117 + htab->plt->output_offset
411e1bfb
AM		 11118 + ent->plt.offset);
11119 unresolved_reloc = FALSE;
11120 }
65f38f15 11121 }
65f38f15 11122 break;
5bd4f169 11123
0b13192e
AM		 11124 case R_PPC64_TOC:
11125 /* Relocation value is TOC base. */
11126 relocation = TOCstart;
11127 if (r_symndx == 0)
11128 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 11129 else if (unresolved_reloc)
11130 ;
11131 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 11132 relocation += htab->stub_group[sec->id].toc_off;
11133 else
11134 unresolved_reloc = TRUE;
ab96bf03 11135 goto dodyn;
0b13192e 11136
5bd4f169
AM		 11137 /* TOC16 relocs. We want the offset relative to the TOC base,
11138 which is the address of the start of the TOC plus 0x8000.
11139 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11140 in this order. */
65f38f15
AM		 11141 case R_PPC64_TOC16:
11142 case R_PPC64_TOC16_LO:
11143 case R_PPC64_TOC16_HI:
11144 case R_PPC64_TOC16_DS:
11145 case R_PPC64_TOC16_LO_DS:
11146 case R_PPC64_TOC16_HA:
ad8e1ba5 11147 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 11148 break;
11149
11150 /* Relocate against the beginning of the section. */
65f38f15
AM		 11151 case R_PPC64_SECTOFF:
11152 case R_PPC64_SECTOFF_LO:
11153 case R_PPC64_SECTOFF_HI:
11154 case R_PPC64_SECTOFF_DS:
11155 case R_PPC64_SECTOFF_LO_DS:
11156 case R_PPC64_SECTOFF_HA:
4ce794b7 11157 if (sec != NULL)
65f38f15 11158 addend -= sec->output_section->vma;
5bd4f169
AM		 11159 break;
11160
721956f4
AM		 11161 case R_PPC64_REL14:
11162 case R_PPC64_REL14_BRNTAKEN:
11163 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 11164 case R_PPC64_REL24:
11165 break;
11166
411e1bfb
AM		 11167 case R_PPC64_TPREL16:
11168 case R_PPC64_TPREL16_LO:
11169 case R_PPC64_TPREL16_HI:
11170 case R_PPC64_TPREL16_HA:
11171 case R_PPC64_TPREL16_DS:
11172 case R_PPC64_TPREL16_LO_DS:
11173 case R_PPC64_TPREL16_HIGHER:
11174 case R_PPC64_TPREL16_HIGHERA:
11175 case R_PPC64_TPREL16_HIGHEST:
11176 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 11177 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 11178 if (info->shared)
11179 /* The TPREL16 relocs shouldn't really be used in shared
11180 libs as they will result in DT_TEXTREL being set, but
11181 support them anyway. */
11182 goto dodyn;
11183 break;
11184
11185 case R_PPC64_DTPREL16:
11186 case R_PPC64_DTPREL16_LO:
11187 case R_PPC64_DTPREL16_HI:
11188 case R_PPC64_DTPREL16_HA:
11189 case R_PPC64_DTPREL16_DS:
11190 case R_PPC64_DTPREL16_LO_DS:
11191 case R_PPC64_DTPREL16_HIGHER:
11192 case R_PPC64_DTPREL16_HIGHERA:
11193 case R_PPC64_DTPREL16_HIGHEST:
11194 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 11195 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 11196 break;
11197
e515b051
AM		 11198 case R_PPC64_DTPMOD64:
11199 relocation = 1;
11200 addend = 0;
11201 goto dodyn;
11202
411e1bfb 11203 case R_PPC64_TPREL64:
e1918d23 11204 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 11205 goto dodyn;
11206
11207 case R_PPC64_DTPREL64:
e1918d23 11208 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 11209 /* Fall thru */
11210
65f38f15
AM		 11211 /* Relocations that may need to be propagated if this is a
11212 dynamic object. */
04c9666a 11213 case R_PPC64_REL30:
65f38f15
AM		 11214 case R_PPC64_REL32:
11215 case R_PPC64_REL64:
11216 case R_PPC64_ADDR14:
11217 case R_PPC64_ADDR14_BRNTAKEN:
11218 case R_PPC64_ADDR14_BRTAKEN:
11219 case R_PPC64_ADDR16:
11220 case R_PPC64_ADDR16_DS:
11221 case R_PPC64_ADDR16_HA:
11222 case R_PPC64_ADDR16_HI:
11223 case R_PPC64_ADDR16_HIGHER:
11224 case R_PPC64_ADDR16_HIGHERA:
11225 case R_PPC64_ADDR16_HIGHEST:
11226 case R_PPC64_ADDR16_HIGHESTA:
11227 case R_PPC64_ADDR16_LO:
11228 case R_PPC64_ADDR16_LO_DS:
11229 case R_PPC64_ADDR24:
65f38f15
AM		 11230 case R_PPC64_ADDR32:
11231 case R_PPC64_ADDR64:
11232 case R_PPC64_UADDR16:
11233 case R_PPC64_UADDR32:
11234 case R_PPC64_UADDR64:
411e1bfb 11235 dodyn:
5d1634d7 11236 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 11237 break;
11238
41bd81ab
AM		 11239 if (NO_OPD_RELOCS && is_opd)
11240 break;
11241
65f38f15 11242 if ((info->shared
4e795f50 11243 && (h == NULL
039b3fef
AM		 11244 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11245 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 11246 && (must_be_dyn_reloc (info, r_type)
039b3fef 11247 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 11248 || (ELIMINATE_COPY_RELOCS
11249 && !info->shared
65f38f15 11250 && h != NULL
039b3fef 11251 && h->elf.dynindx != -1
f5385ebf
AM		 11252 && !h->elf.non_got_ref
11253 && h->elf.def_dynamic
11254 && !h->elf.def_regular))
65f38f15
AM		 11255 {
11256 Elf_Internal_Rela outrel;
b34976b6 11257 bfd_boolean skip, relocate;
65f38f15 11258 asection *sreloc;
947216bf 11259 bfd_byte *loc;
1cf1f670 11260 bfd_vma out_off;
65f38f15
AM		 11261
11262 /* When generating a dynamic object, these relocations
11263 are copied into the output file to be resolved at run
11264 time. */
11265
b34976b6
AM		 11266 skip = FALSE;
11267 relocate = FALSE;
65f38f15 11268
1cf1f670
AM		 11269 out_off = _bfd_elf_section_offset (output_bfd, info,
11270 input_section, rel->r_offset);
11271 if (out_off == (bfd_vma) -1)
b34976b6 11272 skip = TRUE;
1cf1f670 11273 else if (out_off == (bfd_vma) -2)
b34976b6 11274 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 11275 out_off += (input_section->output_section->vma
11276 + input_section->output_offset);
11277 outrel.r_offset = out_off;
411e1bfb 11278 outrel.r_addend = rel->r_addend;
65f38f15 11279
1cf1f670
AM		 11280 /* Optimize unaligned reloc use. */
11281 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
11282 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
11283 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
11284 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
11285 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
11286 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
11287 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
11288 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
11289 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
11290
65f38f15 11291 if (skip)
0bb2d96a 11292 memset (&outrel, 0, sizeof outrel);
039b3fef 11293 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 11294 && !is_opd
11295 && r_type != R_PPC64_TOC)
039b3fef 11296 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 11297 else
11298 {
41bd81ab
AM		 11299 /* This symbol is local, or marked to become local,
11300 or this is an opd section reloc which must point
11301 at a local function. */
65f38f15 11302 outrel.r_addend += relocation;
e86ce104 11303 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 11304 {
3fad3c7c 11305 if (is_opd && h != NULL)
afbe61cf
AM		 11306 {
11307 /* Lie about opd entries. This case occurs
11308 when building shared libraries and we
11309 reference a function in another shared
3fad3c7c
AM		 11310 lib. The same thing happens for a weak
11311 definition in an application that's
11312 overridden by a strong definition in a
11313 shared lib. (I believe this is a generic
11314 bug in binutils handling of weak syms.)
11315 In these cases we won't use the opd
1e2f5b6e 11316 entry in this lib. */
b34976b6 11317 unresolved_reloc = FALSE;
afbe61cf 11318 }
65f38f15 11319 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 11320
11321 /* We need to relocate .opd contents for ld.so.
11322 Prelink also wants simple and consistent rules
11323 for relocs. This make all RELATIVE relocs have
11324 *r_offset equal to r_addend. */
11325 relocate = TRUE;
65f38f15
AM		 11326 }
11327 else
11328 {
11329 long indx = 0;
11330
1d483afe 11331 if (r_symndx == 0 || bfd_is_abs_section (sec))
65f38f15
AM		 11332 ;
11333 else if (sec == NULL || sec->owner == NULL)
11334 {
11335 bfd_set_error (bfd_error_bad_value);
b34976b6 11336 return FALSE;
65f38f15
AM		 11337 }
11338 else
11339 {
11340 asection *osec;
11341
11342 osec = sec->output_section;
11343 indx = elf_section_data (osec)->dynindx;
11344
74541ad4
AM		 11345 if (indx == 0)
11346 {
11347 if ((osec->flags & SEC_READONLY) == 0
11348 && htab->elf.data_index_section != NULL)
11349 osec = htab->elf.data_index_section;
11350 else
11351 osec = htab->elf.text_index_section;
11352 indx = elf_section_data (osec)->dynindx;
11353 }
11354 BFD_ASSERT (indx != 0);
11355
65f38f15
AM		 11356 /* We are turning this relocation into one
11357 against a section symbol, so subtract out
11358 the output section's address but not the
11359 offset of the input section in the output
11360 section. */
11361 outrel.r_addend -= osec->vma;
11362 }
11363
11364 outrel.r_info = ELF64_R_INFO (indx, r_type);
11365 }
11366 }
11367
11368 sreloc = elf_section_data (input_section)->sreloc;
11369 if (sreloc == NULL)
11370 abort ();
11371
dfbb6ac9
AM		 11372 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11373 >= sreloc->size)
11374 abort ();
947216bf
AM		 11375 loc = sreloc->contents;
11376 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 11377 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11378
11379 /* If this reloc is against an external symbol, it will
11380 be computed at runtime, so there's no need to do
81407a69
AM		 11381 anything now. However, for the sake of prelink ensure
11382 that the section contents are a known value. */
65f38f15 11383 if (! relocate)
81407a69
AM		 11384 {
11385 unresolved_reloc = FALSE;
11386 /* The value chosen here is quite arbitrary as ld.so
11387 ignores section contents except for the special
11388 case of .opd where the contents might be accessed
11389 before relocation. Choose zero, as that won't
11390 cause reloc overflow. */
11391 relocation = 0;
11392 addend = 0;
11393 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11394 to improve backward compatibility with older
11395 versions of ld. */
11396 if (r_type == R_PPC64_ADDR64)
11397 addend = outrel.r_addend;
11398 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11399 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 11400 addend = (input_section->output_section->vma
11401 + input_section->output_offset
11402 + rel->r_offset);
81407a69 11403 }
65f38f15 11404 }
5bd4f169
AM		 11405 break;
11406
65f38f15
AM		 11407 case R_PPC64_COPY:
11408 case R_PPC64_GLOB_DAT:
11409 case R_PPC64_JMP_SLOT:
11410 case R_PPC64_RELATIVE:
11411 /* We shouldn't ever see these dynamic relocs in relocatable
11412 files. */
ae9a127f 11413 /* Fall through. */
65f38f15
AM		 11414
11415 case R_PPC64_PLTGOT16:
11416 case R_PPC64_PLTGOT16_DS:
11417 case R_PPC64_PLTGOT16_HA:
11418 case R_PPC64_PLTGOT16_HI:
11419 case R_PPC64_PLTGOT16_LO:
11420 case R_PPC64_PLTGOT16_LO_DS:
11421 case R_PPC64_PLTREL32:
11422 case R_PPC64_PLTREL64:
11423 /* These ones haven't been implemented yet. */
11424
11425 (*_bfd_error_handler)
d003868e
AM		 11426 (_("%B: relocation %s is not supported for symbol %s."),
11427 input_bfd,
4ce794b7 11428 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 11429
11430 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11431 ret = FALSE;
5bd4f169 11432 continue;
65f38f15 11433 }
5bd4f169 11434
65f38f15
AM		 11435 /* Do any further special processing. */
11436 switch (r_type)
11437 {
11438 default:
11439 break;
11440
11441 case R_PPC64_ADDR16_HA:
11442 case R_PPC64_ADDR16_HIGHERA:
11443 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 11444 case R_PPC64_TOC16_HA:
11445 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 11446 case R_PPC64_TPREL16_HA:
11447 case R_PPC64_DTPREL16_HA:
411e1bfb
AM		 11448 case R_PPC64_TPREL16_HIGHER:
11449 case R_PPC64_TPREL16_HIGHERA:
11450 case R_PPC64_TPREL16_HIGHEST:
11451 case R_PPC64_TPREL16_HIGHESTA:
11452 case R_PPC64_DTPREL16_HIGHER:
11453 case R_PPC64_DTPREL16_HIGHERA:
11454 case R_PPC64_DTPREL16_HIGHEST:
11455 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 11456 /* It's just possible that this symbol is a weak symbol
11457 that's not actually defined anywhere. In that case,
11458 'sec' would be NULL, and we should leave the symbol
11459 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 11460 if (sec == NULL)
11461 break;
11462 /* Fall thru */
11463
11464 case R_PPC64_GOT16_HA:
11465 case R_PPC64_PLTGOT16_HA:
11466 case R_PPC64_PLT16_HA:
11467 case R_PPC64_GOT_TLSGD16_HA:
11468 case R_PPC64_GOT_TLSLD16_HA:
11469 case R_PPC64_GOT_TPREL16_HA:
11470 case R_PPC64_GOT_DTPREL16_HA:
11471 /* Add 0x10000 if sign bit in 0:15 is set.
11472 Bits 0:15 are not used. */
11473 addend += 0x8000;
65f38f15
AM		 11474 break;
11475
11476 case R_PPC64_ADDR16_DS:
11477 case R_PPC64_ADDR16_LO_DS:
11478 case R_PPC64_GOT16_DS:
11479 case R_PPC64_GOT16_LO_DS:
11480 case R_PPC64_PLT16_LO_DS:
11481 case R_PPC64_SECTOFF_DS:
11482 case R_PPC64_SECTOFF_LO_DS:
11483 case R_PPC64_TOC16_DS:
11484 case R_PPC64_TOC16_LO_DS:
11485 case R_PPC64_PLTGOT16_DS:
11486 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 11487 case R_PPC64_GOT_TPREL16_DS:
11488 case R_PPC64_GOT_TPREL16_LO_DS:
11489 case R_PPC64_GOT_DTPREL16_DS:
11490 case R_PPC64_GOT_DTPREL16_LO_DS:
11491 case R_PPC64_TPREL16_DS:
11492 case R_PPC64_TPREL16_LO_DS:
11493 case R_PPC64_DTPREL16_DS:
11494 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 11495 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11496 mask = 3;
11497 /* If this reloc is against an lq insn, then the value must be
11498 a multiple of 16. This is somewhat of a hack, but the
11499 "correct" way to do this by defining _DQ forms of all the
11500 _DS relocs bloats all reloc switches in this file. It
11501 doesn't seem to make much sense to use any of these relocs
11502 in data, so testing the insn should be safe. */
494dac0c 11503 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 11504 mask = 15;
11505 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 11506 {
11507 (*_bfd_error_handler)
d003868e
AM		 11508 (_("%B: error: relocation %s not a multiple of %d"),
11509 input_bfd,
4ce794b7 11510 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11511 mask + 1);
65f38f15 11512 bfd_set_error (bfd_error_bad_value);
b34976b6 11513 ret = FALSE;
65f38f15
AM		 11514 continue;
11515 }
11516 break;
5bd4f169
AM		 11517 }
11518
239e1f3a
AM		 11519 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11520 because such sections are not SEC_ALLOC and thus ld.so will
11521 not process them. */
65f38f15 11522 if (unresolved_reloc
239e1f3a 11523 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11524 && h->elf.def_dynamic))
9c07fe7c
AM		 11525 {
11526 (*_bfd_error_handler)
d003868e
AM		 11527 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11528 input_bfd,
11529 input_section,
9c07fe7c 11530 (long) rel->r_offset,
7b609f53 11531 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11532 h->elf.root.root.string);
b34976b6 11533 ret = FALSE;
9c07fe7c 11534 }
5bd4f169 11535
65f38f15 11536 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 11537 input_bfd,
11538 input_section,
11539 contents,
411e1bfb 11540 rel->r_offset,
5bd4f169
AM		 11541 relocation,
11542 addend);
11543
ef60b7ff 11544 if (r != bfd_reloc_ok)
5bd4f169 11545 {
cd27b276
AM		 11546 if (sym_name == NULL)
11547 sym_name = "(null)";
11548 if (r == bfd_reloc_overflow)
5bd4f169 11549 {
cd27b276
AM		 11550 if (warned)
11551 continue;
11552 if (h != NULL
039b3fef 11553 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11554 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 11555 {
11556 /* Assume this is a call protected by other code that
11557 detects the symbol is undefined. If this is the case,
11558 we can safely ignore the overflow. If not, the
11559 program is hosed anyway, and a little warning isn't
11560 going to help. */
11561
11562 continue;
11563 }
11564
ef60b7ff 11565 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 11566 (info, (h ? &h->elf.root : NULL), sym_name,
11567 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11568 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11569 return FALSE;
ef60b7ff
AM		 11570 }
11571 else
11572 {
11573 (*_bfd_error_handler)
d003868e
AM		 11574 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11575 input_bfd,
11576 input_section,
7b609f53 11577 (long) rel->r_offset,
4ce794b7 11578 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 11579 sym_name,
11580 (int) r);
b34976b6 11581 ret = FALSE;
ef60b7ff 11582 }
5bd4f169 11583 }
5bd4f169
AM		 11584 }
11585
645ea6a9
AM		 11586 /* If we're emitting relocations, then shortly after this function
11587 returns, reloc offsets and addends for this section will be
11588 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 11589 file rather than the input. Save a copy of the relocs for
11590 opd_entry_value. */
4cc603a5 11591 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 11592 {
11593 bfd_size_type amt;
11594 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11595 rel = bfd_alloc (input_bfd, amt);
11596 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11597 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11598 if (rel == NULL)
11599 return FALSE;
11600 memcpy (rel, relocs, amt);
11601 }
5bd4f169
AM		 11602 return ret;
11603}
11604
754021d0
AM		 11605/* Adjust the value of any local symbols in opd sections. */
11606
11607static bfd_boolean
11608ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11609 const char *name ATTRIBUTE_UNUSED,
11610 Elf_Internal_Sym *elfsym,
11611 asection *input_sec,
11612 struct elf_link_hash_entry *h)
11613{
74f0fb50
AM		 11614 struct _opd_sec_data *opd;
11615 long adjust;
754021d0
AM		 11616 bfd_vma value;
11617
4025353c
AM		 11618 if (h != NULL)
11619 return TRUE;
11620
74f0fb50
AM		 11621 opd = get_opd_info (input_sec);
11622 if (opd == NULL || opd->adjust == NULL)
754021d0
AM		 11623 return TRUE;
11624
11625 value = elfsym->st_value - input_sec->output_offset;
11626 if (!info->relocatable)
11627 value -= input_sec->output_section->vma;
11628
74f0fb50 11629 adjust = opd->adjust[value / 8];
4025353c
AM		 11630 if (adjust == -1)
11631 elfsym->st_value = 0;
11632 else
11633 elfsym->st_value += adjust;
754021d0
AM		 11634 return TRUE;
11635}
11636
5bd4f169
AM		 11637/* Finish up dynamic symbol handling. We set the contents of various
11638 dynamic sections here. */
11639
b34976b6 11640static bfd_boolean
4ce794b7
AM		 11641ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11642 struct bfd_link_info *info,
11643 struct elf_link_hash_entry *h,
11644 Elf_Internal_Sym *sym)
5bd4f169 11645{
65f38f15 11646 struct ppc_link_hash_table *htab;
8387904d
AM		 11647 struct plt_entry *ent;
11648 Elf_Internal_Rela rela;
11649 bfd_byte *loc;
5bd4f169 11650
65f38f15 11651 htab = ppc_hash_table (info);
5bd4f169 11652
8387904d
AM		 11653 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11654 if (ent->plt.offset != (bfd_vma) -1)
11655 {
11656 /* This symbol has an entry in the procedure linkage
11657 table. Set it up. */
11658
11659 if (htab->plt == NULL
11660 || htab->relplt == NULL
11661 || htab->glink == NULL)
11662 abort ();
11663
11664 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11665 fill in the PLT entry. */
11666 rela.r_offset = (htab->plt->output_section->vma
11667 + htab->plt->output_offset
11668 + ent->plt.offset);
11669 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11670 rela.r_addend = ent->addend;
11671
11672 loc = htab->relplt->contents;
11673 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11674 * sizeof (Elf64_External_Rela));
11675 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11676 }
5bd4f169 11677
f5385ebf 11678 if (h->needs_copy)
5bd4f169 11679 {
5bd4f169 11680 Elf_Internal_Rela rela;
947216bf 11681 bfd_byte *loc;
5bd4f169 11682
65f38f15 11683 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11684
65f38f15
AM		 11685 if (h->dynindx == -1
11686 || (h->root.type != bfd_link_hash_defined
11687 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11688 || htab->relbss == NULL)
65f38f15 11689 abort ();
5bd4f169
AM		 11690
11691 rela.r_offset = (h->root.u.def.value
11692 + h->root.u.def.section->output_section->vma
11693 + h->root.u.def.section->output_offset);
11694 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11695 rela.r_addend = 0;
4ce794b7
AM		 11696 loc = htab->relbss->contents;
11697 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11698 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 11699 }
11700
5bd4f169
AM		 11701 /* Mark some specially defined symbols as absolute. */
11702 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11703 sym->st_shndx = SHN_ABS;
11704
b34976b6 11705 return TRUE;
5bd4f169
AM		 11706}
11707
65f38f15
AM		 11708/* Used to decide how to sort relocs in an optimal manner for the
11709 dynamic linker, before writing them out. */
11710
11711static enum elf_reloc_type_class
4ce794b7 11712ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11713{
04c9666a 11714 enum elf_ppc64_reloc_type r_type;
a33d1f77 11715
4ce794b7 11716 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11717 switch (r_type)
65f38f15
AM		 11718 {
11719 case R_PPC64_RELATIVE:
11720 return reloc_class_relative;
11721 case R_PPC64_JMP_SLOT:
11722 return reloc_class_plt;
11723 case R_PPC64_COPY:
11724 return reloc_class_copy;
11725 default:
11726 return reloc_class_normal;
11727 }
11728}
11729
5bd4f169
AM		 11730/* Finish up the dynamic sections. */
11731
b34976b6 11732static bfd_boolean
4ce794b7
AM		 11733ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11734 struct bfd_link_info *info)
5bd4f169 11735{
65f38f15
AM		 11736 struct ppc_link_hash_table *htab;
11737 bfd *dynobj;
5bd4f169 11738 asection *sdyn;
5bd4f169 11739
65f38f15
AM		 11740 htab = ppc_hash_table (info);
11741 dynobj = htab->elf.dynobj;
5bd4f169
AM		 11742 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11743
65f38f15 11744 if (htab->elf.dynamic_sections_created)
5bd4f169 11745 {
5bd4f169
AM		 11746 Elf64_External_Dyn *dyncon, *dynconend;
11747
4ce794b7 11748 if (sdyn == NULL || htab->got == NULL)
65f38f15 11749 abort ();
5bd4f169
AM		 11750
11751 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11752 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11753 for (; dyncon < dynconend; dyncon++)
11754 {
11755 Elf_Internal_Dyn dyn;
19397422 11756 asection *s;
5bd4f169
AM		 11757
11758 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11759
11760 switch (dyn.d_tag)
11761 {
65f38f15
AM		 11762 default:
11763 continue;
5bd4f169 11764
5d1634d7 11765 case DT_PPC64_GLINK:
4ce794b7 11766 s = htab->glink;
6348e046 11767 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11768 /* We stupidly defined DT_PPC64_GLINK to be the start
11769 of glink rather than the first entry point, which is
11770 what ld.so needs, and now have a bigger stub to
11771 support automatic multiple TOCs. */
11772 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11773 break;
11774
19397422
AM		 11775 case DT_PPC64_OPD:
11776 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11777 if (s == NULL)
11778 continue;
11779 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11780 break;
11781
11782 case DT_PPC64_OPDSZ:
11783 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11784 if (s == NULL)
11785 continue;
eea6121a 11786 dyn.d_un.d_val = s->size;
19397422
AM		 11787 break;
11788
65f38f15 11789 case DT_PLTGOT:
4ce794b7 11790 s = htab->plt;
6348e046 11791 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11792 break;
11793
11794 case DT_JMPREL:
4ce794b7 11795 s = htab->relplt;
6348e046 11796 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11797 break;
5bd4f169 11798
65f38f15 11799 case DT_PLTRELSZ:
eea6121a 11800 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11801 break;
11802
11803 case DT_RELASZ:
11804 /* Don't count procedure linkage table relocs in the
11805 overall reloc count. */
4ce794b7 11806 s = htab->relplt;
6348e046
AM		 11807 if (s == NULL)
11808 continue;
eea6121a 11809 dyn.d_un.d_val -= s->size;
6348e046
AM		 11810 break;
11811
11812 case DT_RELA:
11813 /* We may not be using the standard ELF linker script.
11814 If .rela.plt is the first .rela section, we adjust
11815 DT_RELA to not include it. */
4ce794b7 11816 s = htab->relplt;
6348e046
AM		 11817 if (s == NULL)
11818 continue;
11819 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11820 continue;
eea6121a 11821 dyn.d_un.d_ptr += s->size;
65f38f15 11822 break;
5bd4f169 11823 }
5bd4f169 11824
65f38f15 11825 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11826 }
5bd4f169
AM		 11827 }
11828
eea6121a 11829 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11830 {
11831 /* Fill in the first entry in the global offset table.
11832 We use it to hold the link-time TOCbase. */
11833 bfd_put_64 (output_bfd,
60ee0d4a 11834 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11835 htab->got->contents);
5d1634d7
AM		 11836
11837 /* Set .got entry size. */
4ce794b7 11838 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11839 }
11840
eea6121a 11841 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11842 {
11843 /* Set .plt entry size. */
4ce794b7 11844 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11845 = PLT_ENTRY_SIZE;
11846 }
11847
84f5d08e
AM		 11848 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11849 brlt ourselves if emitrelocations. */
11850 if (htab->brlt != NULL
11851 && htab->brlt->reloc_count != 0
11852 && !_bfd_elf_link_output_relocs (output_bfd,
11853 htab->brlt,
11854 &elf_section_data (htab->brlt)->rel_hdr,
11855 elf_section_data (htab->brlt)->relocs,
11856 NULL))
11857 return FALSE;
11858
176a0d42
AM		 11859 if (htab->glink != NULL
11860 && htab->glink->reloc_count != 0
11861 && !_bfd_elf_link_output_relocs (output_bfd,
11862 htab->glink,
11863 &elf_section_data (htab->glink)->rel_hdr,
11864 elf_section_data (htab->glink)->relocs,
11865 NULL))
11866 return FALSE;
11867
e717da7e 11868 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11869 since we didn't add them to DYNOBJ. We know dynobj is the first
11870 bfd. */
e717da7e
AM		 11871 while ((dynobj = dynobj->link_next) != NULL)
11872 {
11873 asection *s;
7b53ace3 11874
0c8d6e5c 11875 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 11876 continue;
11877
e717da7e
AM		 11878 s = ppc64_elf_tdata (dynobj)->got;
11879 if (s != NULL
eea6121a 11880 && s->size != 0
e717da7e
AM		 11881 && s->output_section != bfd_abs_section_ptr
11882 && !bfd_set_section_contents (output_bfd, s->output_section,
11883 s->contents, s->output_offset,
eea6121a 11884 s->size))
e717da7e
AM		 11885 return FALSE;
11886 s = ppc64_elf_tdata (dynobj)->relgot;
11887 if (s != NULL
eea6121a 11888 && s->size != 0
e717da7e
AM		 11889 && s->output_section != bfd_abs_section_ptr
11890 && !bfd_set_section_contents (output_bfd, s->output_section,
11891 s->contents, s->output_offset,
eea6121a 11892 s->size))
e717da7e
AM		 11893 return FALSE;
11894 }
f6c52c13 11895
b34976b6 11896 return TRUE;
5bd4f169
AM		 11897}
11898
5bd4f169 11899#include "elf64-target.h"
GDB Binutils - Deliverables
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