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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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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;
8711 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
8712 r[0].r_offset += 4;
8713 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8714 r[0].r_addend = dest;
8715 if (PPC_HA (off) != 0)
8716 {
8717 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8718 r[1].r_offset = r[0].r_offset + 4;
8719 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8720 r[1].r_addend = r[0].r_addend;
8721 }
8722 }
8723
ad8e1ba5
AM		 8724 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8725 {
176a0d42 8726 if (PPC_HA (off) != 0)
ac2df442
AM		 8727 {
8728 size = 16;
176a0d42 8729 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8730 loc += 4;
176a0d42 8731 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM		 8732 }
8733 else
8734 {
8735 size = 12;
176a0d42 8736 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 8737 }
ad8e1ba5
AM		 8738 }
8739 else
8740 {
8741 bfd_vma r2off;
8742
8743 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8744 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8745 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8746 loc += 4;
ac2df442 8747 size = 20;
176a0d42 8748 if (PPC_HA (off) != 0)
ac2df442
AM		 8749 {
8750 size += 4;
176a0d42 8751 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8752 loc += 4;
176a0d42 8753 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM		 8754 loc += 4;
8755 }
8756 else
8757 {
176a0d42 8758 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM		 8759 loc += 4;
8760 }
8761
8762 if (PPC_HA (r2off) != 0)
8763 {
8764 size += 4;
8765 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8766 loc += 4;
8767 }
97b639ba 8768 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8769 }
8770 loc += 4;
97b639ba 8771 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8772 loc += 4;
97b639ba 8773 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8774 break;
5d1634d7 8775
721956f4 8776 case ppc_stub_plt_call:
c862ae31
AM		 8777 /* Do the best we can for shared libraries built without
8778 exporting ".foo" for each "foo". This can happen when symbol
8779 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8780 if (stub_entry->h->oh != NULL
8781 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8782 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8783 {
8784 /* Point the symbol at the stub. There may be multiple stubs,
8785 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8786 defined somewhere. Maybe defining the symbol in the stub
8787 section is a silly idea. If we didn't do this, htab->top_id
8788 could disappear. */
34814b9f
AM		 8789 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8790 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8791 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8792 }
8793
721956f4 8794 /* Now build the stub. */
176a0d42 8795 dest = (bfd_vma) -1;
411e1bfb
AM		 8796 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8797 if (ent->addend == stub_entry->addend)
8798 {
176a0d42 8799 dest = ent->plt.offset;
411e1bfb
AM		 8800 break;
8801 }
176a0d42 8802 if (dest >= (bfd_vma) -2)
721956f4
AM		 8803 abort ();
8804
176a0d42
AM		 8805 dest &= ~ (bfd_vma) 1;
8806 dest += (htab->plt->output_offset
8807 + htab->plt->output_section->vma);
8808
8809 off = (dest
8810 - elf_gp (htab->plt->output_section->owner)
8811 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8812
ad8e1ba5 8813 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8814 {
8815 (*_bfd_error_handler)
8816 (_("linkage table error against `%s'"),
8817 stub_entry->h->elf.root.root.string);
8818 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8819 htab->stub_error = TRUE;
8820 return FALSE;
721956f4
AM		 8821 }
8822
176a0d42
AM		 8823 r = NULL;
8824 if (info->emitrelocations)
8825 {
8826 r = get_relocs (stub_entry->stub_sec,
8827 (2 + (PPC_HA (off) != 0)
8828 + (PPC_HA (off + 16) == PPC_HA (off))));
8829 if (r == NULL)
8830 return FALSE;
8831 r[0].r_offset = loc - stub_entry->stub_sec->contents;
8832 r[0].r_addend = dest;
8833 }
8834 p = build_plt_stub (htab->stub_bfd, loc, off, r);
721956f4
AM		 8835 size = p - loc;
8836 break;
8837
8838 default:
8839 BFD_FAIL ();
b34976b6 8840 return FALSE;
721956f4
AM		 8841 }
8842
eea6121a 8843 stub_entry->stub_sec->size += size;
97b639ba 8844
ee75fd95 8845 if (htab->emit_stub_syms)
97b639ba
AM		 8846 {
8847 struct elf_link_hash_entry *h;
ee75fd95
AM		 8848 size_t len1, len2;
8849 char *name;
8850 const char *const stub_str[] = { "long_branch",
8851 "long_branch_r2off",
8852 "plt_branch",
8853 "plt_branch_r2off",
8854 "plt_call" };
8855
8856 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8857 len2 = strlen (stub_entry->root.string);
8858 name = bfd_malloc (len1 + len2 + 2);
8859 if (name == NULL)
8860 return FALSE;
8861 memcpy (name, stub_entry->root.string, 9);
8862 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8863 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8864 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8865 if (h == NULL)
8866 return FALSE;
8867 if (h->root.type == bfd_link_hash_new)
8868 {
8869 h->root.type = bfd_link_hash_defined;
8870 h->root.u.def.section = stub_entry->stub_sec;
8871 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8872 h->ref_regular = 1;
8873 h->def_regular = 1;
8874 h->ref_regular_nonweak = 1;
8875 h->forced_local = 1;
8876 h->non_elf = 0;
97b639ba
AM		 8877 }
8878 }
8879
b34976b6 8880 return TRUE;
721956f4
AM		 8881}
8882
8883/* As above, but don't actually build the stub. Just bump offset so
8884 we know stub section sizes, and select plt_branch stubs where
8885 long_branch stubs won't do. */
8886
b34976b6 8887static bfd_boolean
4ce794b7 8888ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8889{
8890 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8891 struct bfd_link_info *info;
721956f4
AM		 8892 struct ppc_link_hash_table *htab;
8893 bfd_vma off;
8894 int size;
8895
8896 /* Massage our args to the form they really have. */
8897 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8898 info = in_arg;
8899
8900 htab = ppc_hash_table (info);
721956f4
AM		 8901
8902 if (stub_entry->stub_type == ppc_stub_plt_call)
8903 {
411e1bfb 8904 struct plt_entry *ent;
58ac9f71 8905 off = (bfd_vma) -1;
411e1bfb
AM		 8906 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8907 if (ent->addend == stub_entry->addend)
8908 {
8909 off = ent->plt.offset & ~(bfd_vma) 1;
8910 break;
8911 }
58ac9f71 8912 if (off >= (bfd_vma) -2)
411e1bfb 8913 abort ();
4ce794b7
AM		 8914 off += (htab->plt->output_offset
8915 + htab->plt->output_section->vma
8916 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8917 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8918
ad8e1ba5 8919 size = PLT_CALL_STUB_SIZE;
ac2df442
AM		 8920 if (PPC_HA (off) == 0)
8921 size -= 4;
4ce794b7 8922 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4 8923 size += 4;
176a0d42
AM		 8924 if (info->emitrelocations)
8925 {
8926 stub_entry->stub_sec->reloc_count
8927 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
8928 stub_entry->stub_sec->flags |= SEC_RELOC;
8929 }
721956f4
AM		 8930 }
8931 else
8932 {
ad8e1ba5
AM		 8933 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8934 variants. */
ac2df442
AM		 8935 bfd_vma r2off = 0;
8936
721956f4
AM		 8937 off = (stub_entry->target_value
8938 + stub_entry->target_section->output_offset
8939 + stub_entry->target_section->output_section->vma);
eea6121a 8940 off -= (stub_entry->stub_sec->size
721956f4
AM		 8941 + stub_entry->stub_sec->output_offset
8942 + stub_entry->stub_sec->output_section->vma);
8943
ad8e1ba5
AM		 8944 /* Reset the stub type from the plt variant in case we now
8945 can reach with a shorter stub. */
8946 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8947 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8948
8949 size = 4;
8950 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8951 {
ac2df442
AM		 8952 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8953 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8954 size = 12;
8955 if (PPC_HA (r2off) != 0)
8956 size = 16;
8957 off -= size - 4;
ad8e1ba5
AM		 8958 }
8959
8960 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8961 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8962 {
8963 struct ppc_branch_hash_entry *br_entry;
8964
8965 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8966 stub_entry->root.string + 9,
b34976b6 8967 TRUE, FALSE);
721956f4
AM		 8968 if (br_entry == NULL)
8969 {
8970 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8971 stub_entry->root.string);
b34976b6
AM		 8972 htab->stub_error = TRUE;
8973 return FALSE;
721956f4
AM		 8974 }
8975
8976 if (br_entry->iter != htab->stub_iteration)
8977 {
8978 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8979 br_entry->offset = htab->brlt->size;
8980 htab->brlt->size += 8;
63bc6f6c 8981
ee75fd95 8982 if (htab->relbrlt != NULL)
eea6121a 8983 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 8984 else if (info->emitrelocations)
8985 {
8986 htab->brlt->reloc_count += 1;
8987 htab->brlt->flags |= SEC_RELOC;
8988 }
721956f4 8989 }
ad8e1ba5
AM		 8990
8991 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 8992 off = (br_entry->offset
8993 + htab->brlt->output_offset
8994 + htab->brlt->output_section->vma
8995 - elf_gp (htab->brlt->output_section->owner)
8996 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8997
176a0d42
AM		 8998 if (info->emitrelocations)
8999 {
9000 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
9001 stub_entry->stub_sec->flags |= SEC_RELOC;
9002 }
9003
ac2df442
AM		 9004 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
9005 {
9006 size = 12;
176a0d42 9007 if (PPC_HA (off) != 0)
ac2df442
AM		 9008 size = 16;
9009 }
9010 else
9011 {
9012 size = 20;
176a0d42 9013 if (PPC_HA (off) != 0)
ac2df442
AM		 9014 size += 4;
9015
9016 if (PPC_HA (r2off) != 0)
9017 size += 4;
9018 }
721956f4 9019 }
84f5d08e
AM		 9020 else if (info->emitrelocations)
9021 {
9022 stub_entry->stub_sec->reloc_count += 1;
9023 stub_entry->stub_sec->flags |= SEC_RELOC;
9024 }
721956f4
AM		 9025 }
9026
eea6121a 9027 stub_entry->stub_sec->size += size;
b34976b6 9028 return TRUE;
721956f4
AM		 9029}
9030
9031/* Set up various things so that we can make a list of input sections
9032 for each output section included in the link. Returns -1 on error,
cedb70c5 9033 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 9034
9035int
4c52953f
AM		 9036ppc64_elf_setup_section_lists (bfd *output_bfd,
9037 struct bfd_link_info *info,
9038 int no_multi_toc)
721956f4
AM		 9039{
9040 bfd *input_bfd;
734b6cf9 9041 int top_id, top_index, id;
721956f4 9042 asection *section;
734b6cf9 9043 asection **input_list;
721956f4
AM		 9044 bfd_size_type amt;
9045 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9046
4c52953f
AM		 9047 htab->no_multi_toc = no_multi_toc;
9048
4ce794b7 9049 if (htab->brlt == NULL)
721956f4
AM		 9050 return 0;
9051
1e2f5b6e 9052 /* Find the top input section id. */
3d6f9012 9053 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 9054 input_bfd != NULL;
9055 input_bfd = input_bfd->link_next)
9056 {
721956f4
AM		 9057 for (section = input_bfd->sections;
9058 section != NULL;
9059 section = section->next)
9060 {
9061 if (top_id < section->id)
9062 top_id = section->id;
9063 }
9064 }
721956f4 9065
8f3bab57 9066 htab->top_id = top_id;
721956f4 9067 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 9068 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 9069 if (htab->stub_group == NULL)
9070 return -1;
9071
3d6f9012
AM		 9072 /* Set toc_off for com, und, abs and ind sections. */
9073 for (id = 0; id < 3; id++)
9074 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 9075
3d6f9012 9076 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 9077
9078 /* We can't use output_bfd->section_count here to find the top output
9079 section index as some sections may have been removed, and
8423293d 9080 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 9081 for (section = output_bfd->sections, top_index = 0;
9082 section != NULL;
9083 section = section->next)
9084 {
9085 if (top_index < section->index)
9086 top_index = section->index;
9087 }
9088
9089 htab->top_index = top_index;
9090 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 9091 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 9092 htab->input_list = input_list;
9093 if (input_list == NULL)
9094 return -1;
9095
721956f4
AM		 9096 return 1;
9097}
9098
e717da7e
AM		 9099/* The linker repeatedly calls this function for each TOC input section
9100 and linker generated GOT section. Group input bfds such that the toc
9101 within a group is less than 64k in size. Will break with cute linker
9102 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 9103
9104void
4ce794b7 9105ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 9106{
9107 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9108
4c52953f
AM		 9109 if (!htab->no_multi_toc)
9110 {
9111 bfd_vma addr = isec->output_offset + isec->output_section->vma;
9112 bfd_vma off = addr - htab->toc_curr;
9113
9114 if (off + isec->size > 0x10000)
9115 htab->toc_curr = addr;
99877b66 9116
4c52953f
AM		 9117 elf_gp (isec->owner) = (htab->toc_curr
9118 - elf_gp (isec->output_section->owner)
9119 + TOC_BASE_OFF);
9120 }
ad8e1ba5
AM		 9121}
9122
9123/* Called after the last call to the above function. */
9124
9125void
4c52953f 9126ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 9127{
9128 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 9129
4c52953f
AM		 9130 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
9131
ad8e1ba5
AM		 9132 /* toc_curr tracks the TOC offset used for code sections below in
9133 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 9134 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 9135}
9136
9b5ecbd0
AM		 9137/* No toc references were found in ISEC. If the code in ISEC makes no
9138 calls, then there's no need to use toc adjusting stubs when branching
9139 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 9140 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9141 needed, and 2 if a cyclical call-graph was found but no other reason
9142 for a stub was detected. If called from the top level, a return of
9143 2 means the same as a return of 0. */
9b5ecbd0
AM		 9144
9145static int
4ce794b7 9146toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 9147{
4c52953f
AM		 9148 Elf_Internal_Rela *relstart, *rel;
9149 Elf_Internal_Sym *local_syms;
9b5ecbd0 9150 int ret;
4c52953f 9151 struct ppc_link_hash_table *htab;
9b5ecbd0 9152
772119ce
AM		 9153 /* We know none of our code bearing sections will need toc stubs. */
9154 if ((isec->flags & SEC_LINKER_CREATED) != 0)
9155 return 0;
9156
eea6121a 9157 if (isec->size == 0)
082c50f8
AM		 9158 return 0;
9159
4c52953f
AM		 9160 if (isec->output_section == NULL)
9161 return 0;
9162
4c52953f
AM		 9163 if (isec->reloc_count == 0)
9164 return 0;
9165
9166 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
9167 info->keep_memory);
9168 if (relstart == NULL)
9169 return -1;
9170
9171 /* Look for branches to outside of this section. */
9172 local_syms = NULL;
9173 ret = 0;
9174 htab = ppc_hash_table (info);
9175 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 9176 {
4c52953f
AM		 9177 enum elf_ppc64_reloc_type r_type;
9178 unsigned long r_symndx;
9179 struct elf_link_hash_entry *h;
9180 Elf_Internal_Sym *sym;
9181 asection *sym_sec;
74f0fb50 9182 struct _opd_sec_data *opd;
4c52953f
AM		 9183 bfd_vma sym_value;
9184 bfd_vma dest;
9185
9186 r_type = ELF64_R_TYPE (rel->r_info);
9187 if (r_type != R_PPC64_REL24
9188 && r_type != R_PPC64_REL14
9189 && r_type != R_PPC64_REL14_BRTAKEN
9190 && r_type != R_PPC64_REL14_BRNTAKEN)
9191 continue;
9192
9193 r_symndx = ELF64_R_SYM (rel->r_info);
9194 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
9195 isec->owner))
9b5ecbd0 9196 {
4c52953f
AM		 9197 ret = -1;
9198 break;
9b5ecbd0 9199 }
9b5ecbd0 9200
2917689a
AM		 9201 /* Calls to dynamic lib functions go through a plt call stub
9202 that uses r2. Branches to undefined symbols might be a call
9203 using old-style dot symbols that can be satisfied by a plt
9204 call into a new-style dynamic library. */
4c52953f 9205 if (sym_sec == NULL)
2917689a
AM		 9206 {
9207 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9208 if (eh != NULL
9209 && eh->oh != NULL
9210 && eh->oh->elf.plt.plist != NULL)
9211 {
9212 ret = 1;
9213 break;
9214 }
4c52953f 9215
2917689a
AM		 9216 /* Ignore other undefined symbols. */
9217 continue;
9218 }
9219
9220 /* Assume branches to other sections not included in the link need
9221 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 9222 if (sym_sec->output_section == NULL)
9223 {
9224 ret = 1;
9225 break;
9226 }
9227
9228 if (h == NULL)
9229 sym_value = sym->st_value;
9230 else
9231 {
9232 if (h->root.type != bfd_link_hash_defined
9233 && h->root.type != bfd_link_hash_defweak)
9234 abort ();
9235 sym_value = h->root.u.def.value;
9236 }
9237 sym_value += rel->r_addend;
9238
9239 /* If this branch reloc uses an opd sym, find the code section. */
74f0fb50
AM		 9240 opd = get_opd_info (sym_sec);
9241 if (opd != NULL)
4c52953f 9242 {
74f0fb50 9243 if (h == NULL && opd->adjust != NULL)
4c52953f
AM		 9244 {
9245 long adjust;
9246
74f0fb50 9247 adjust = opd->adjust[sym->st_value / 8];
4c52953f
AM		 9248 if (adjust == -1)
9249 /* Assume deleted functions won't ever be called. */
9250 continue;
9251 sym_value += adjust;
9252 }
9253
9254 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
9255 if (dest == (bfd_vma) -1)
9256 continue;
9257 }
9258 else
9259 dest = (sym_value
9260 + sym_sec->output_offset
9261 + sym_sec->output_section->vma);
9262
9263 /* Ignore branch to self. */
9264 if (sym_sec == isec)
9265 continue;
9266
9267 /* If the called function uses the toc, we need a stub. */
9268 if (sym_sec->has_toc_reloc
9269 || sym_sec->makes_toc_func_call)
9270 {
9271 ret = 1;
9272 break;
9273 }
9274
9275 /* Assume any branch that needs a long branch stub might in fact
9276 need a plt_branch stub. A plt_branch stub uses r2. */
9277 else if (dest - (isec->output_offset
9278 + isec->output_section->vma
9279 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 9280 {
9281 ret = 1;
9282 break;
9283 }
4c52953f
AM		 9284
9285 /* If calling back to a section in the process of being tested, we
9286 can't say for sure that no toc adjusting stubs are needed, so
9287 don't return zero. */
9288 else if (sym_sec->call_check_in_progress)
9289 ret = 2;
9290
9291 /* Branches to another section that itself doesn't have any TOC
9292 references are OK. Recursively call ourselves to check. */
9293 else if (sym_sec->id <= htab->top_id
9294 && htab->stub_group[sym_sec->id].toc_off == 0)
9295 {
9296 int recur;
9297
9298 /* Mark current section as indeterminate, so that other
9299 sections that call back to current won't be marked as
9300 known. */
9301 isec->call_check_in_progress = 1;
9302 recur = toc_adjusting_stub_needed (info, sym_sec);
9303 isec->call_check_in_progress = 0;
9304
9305 if (recur < 0)
9306 {
9307 /* An error. Exit. */
9308 ret = -1;
9309 break;
9310 }
9311 else if (recur <= 1)
9312 {
9313 /* Known result. Mark as checked and set section flag. */
9314 htab->stub_group[sym_sec->id].toc_off = 1;
9315 if (recur != 0)
9316 {
9317 sym_sec->makes_toc_func_call = 1;
9318 ret = 1;
9319 break;
9320 }
9321 }
9322 else
9323 {
9324 /* Unknown result. Continue checking. */
9325 ret = 2;
9326 }
9327 }
9b5ecbd0
AM		 9328 }
9329
4c52953f 9330 if (local_syms != NULL
0ffa91dd 9331 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
4c52953f
AM		 9332 free (local_syms);
9333 if (elf_section_data (isec)->relocs != relstart)
9334 free (relstart);
9335
9b5ecbd0
AM		 9336 return ret;
9337}
9338
721956f4
AM		 9339/* The linker repeatedly calls this function for each input section,
9340 in the order that input sections are linked into output sections.
9341 Build lists of input sections to determine groupings between which
9342 we may insert linker stubs. */
9343
9b5ecbd0 9344bfd_boolean
4ce794b7 9345ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 9346{
9347 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9348
734b6cf9
AM		 9349 if ((isec->output_section->flags & SEC_CODE) != 0
9350 && isec->output_section->index <= htab->top_index)
721956f4 9351 {
734b6cf9 9352 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9353 /* Steal the link_sec pointer for our list. */
721956f4 9354#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 9355 /* This happens to make the list in reverse order,
9356 which is what we want. */
734b6cf9
AM		 9357 PREV_SEC (isec) = *list;
9358 *list = isec;
721956f4 9359 }
ad8e1ba5 9360
4c52953f 9361 if (htab->multi_toc_needed)
9b5ecbd0 9362 {
4c52953f
AM		 9363 /* If a code section has a function that uses the TOC then we need
9364 to use the right TOC (obviously). Also, make sure that .opd gets
9365 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM		 9366 can't find their function symbol (shouldn't ever happen now).
9367 Also specially treat .fixup for the linux kernel. .fixup
9368 contains branches, but only back to the function that hit an
9369 exception. */
9370 if (isec->has_toc_reloc
9371 || (isec->flags & SEC_CODE) == 0
9372 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM		 9373 {
9374 if (elf_gp (isec->owner) != 0)
9375 htab->toc_curr = elf_gp (isec->owner);
9376 }
9377 else if (htab->stub_group[isec->id].toc_off == 0)
9378 {
9379 int ret = toc_adjusting_stub_needed (info, isec);
9380 if (ret < 0)
9381 return FALSE;
9382 else
9383 isec->makes_toc_func_call = ret & 1;
9384 }
9b5ecbd0 9385 }
ad8e1ba5
AM		 9386
9387 /* Functions that don't use the TOC can belong in any TOC group.
9388 Use the last TOC base. This happens to make _init and _fini
9389 pasting work. */
9390 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9391 return TRUE;
721956f4
AM		 9392}
9393
9394/* See whether we can group stub sections together. Grouping stub
9395 sections may result in fewer stubs. More importantly, we need to
9396 put all .init* and .fini* stubs at the beginning of the .init or
9397 .fini output sections respectively, because glibc splits the
9398 _init and _fini functions into multiple parts. Putting a stub in
9399 the middle of a function is not a good idea. */
9400
9401static void
4ce794b7
AM		 9402group_sections (struct ppc_link_hash_table *htab,
9403 bfd_size_type stub_group_size,
9404 bfd_boolean stubs_always_before_branch)
721956f4 9405{
7c8fe5c4
AM		 9406 asection **list;
9407 bfd_size_type stub14_group_size;
9408 bfd_boolean suppress_size_errors;
9409
9410 suppress_size_errors = FALSE;
9411 stub14_group_size = stub_group_size;
9412 if (stub_group_size == 1)
9413 {
9414 /* Default values. */
9415 if (stubs_always_before_branch)
9416 {
9417 stub_group_size = 0x1e00000;
9418 stub14_group_size = 0x7800;
9419 }
9420 else
9421 {
9422 stub_group_size = 0x1c00000;
9423 stub14_group_size = 0x7000;
9424 }
9425 suppress_size_errors = TRUE;
9426 }
9427
9428 list = htab->input_list + htab->top_index;
734b6cf9 9429 do
721956f4 9430 {
734b6cf9
AM		 9431 asection *tail = *list;
9432 while (tail != NULL)
721956f4 9433 {
734b6cf9
AM		 9434 asection *curr;
9435 asection *prev;
9436 bfd_size_type total;
9437 bfd_boolean big_sec;
9438 bfd_vma curr_toc;
9439
9440 curr = tail;
eea6121a 9441 total = tail->size;
7c8fe5c4
AM		 9442 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9443 ? stub14_group_size : stub_group_size);
9444 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 9445 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9446 tail->owner, tail);
734b6cf9
AM		 9447 curr_toc = htab->stub_group[tail->id].toc_off;
9448
9449 while ((prev = PREV_SEC (curr)) != NULL
9450 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM		 9451 < (ppc64_elf_section_data (prev)->has_14bit_branch
9452 ? stub14_group_size : stub_group_size))
ad8e1ba5 9453 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 9454 curr = prev;
9455
9456 /* OK, the size from the start of CURR to the end is less
9457 than stub_group_size and thus can be handled by one stub
9458 section. (or the tail section is itself larger than
9459 stub_group_size, in which case we may be toast.) We
9460 should really be keeping track of the total size of stubs
9461 added here, as stubs contribute to the final output
9462 section size. That's a little tricky, and this way will
9463 only break if stubs added make the total size more than
9464 2^25, ie. for the default stub_group_size, if stubs total
9465 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9466 do
721956f4
AM		 9467 {
9468 prev = PREV_SEC (tail);
734b6cf9 9469 /* Set up this stub group. */
721956f4
AM		 9470 htab->stub_group[tail->id].link_sec = curr;
9471 }
734b6cf9
AM		 9472 while (tail != curr && (tail = prev) != NULL);
9473
9474 /* But wait, there's more! Input sections up to stub_group_size
9475 bytes before the stub section can be handled by it too.
9476 Don't do this if we have a really large section after the
9477 stubs, as adding more stubs increases the chance that
9478 branches may not reach into the stub section. */
9479 if (!stubs_always_before_branch && !big_sec)
9480 {
9481 total = 0;
9482 while (prev != NULL
9483 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM		 9484 < (ppc64_elf_section_data (prev)->has_14bit_branch
9485 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 9486 && htab->stub_group[prev->id].toc_off == curr_toc)
9487 {
9488 tail = prev;
9489 prev = PREV_SEC (tail);
9490 htab->stub_group[tail->id].link_sec = curr;
9491 }
9492 }
9493 tail = prev;
721956f4
AM		 9494 }
9495 }
734b6cf9
AM		 9496 while (list-- != htab->input_list);
9497 free (htab->input_list);
721956f4
AM		 9498#undef PREV_SEC
9499}
9500
721956f4
AM		 9501/* Determine and set the size of the stub section for a final link.
9502
9503 The basic idea here is to examine all the relocations looking for
9504 PC-relative calls to a target that is unreachable with a "bl"
9505 instruction. */
9506
b34976b6 9507bfd_boolean
4ce794b7 9508ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 9509 struct bfd_link_info *info,
9510 bfd_signed_vma group_size,
9511 asection *(*add_stub_section) (const char *, asection *),
9512 void (*layout_sections_again) (void))
721956f4
AM		 9513{
9514 bfd_size_type stub_group_size;
b34976b6 9515 bfd_boolean stubs_always_before_branch;
721956f4
AM		 9516 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9517
9518 /* Stash our params away. */
721956f4
AM		 9519 htab->add_stub_section = add_stub_section;
9520 htab->layout_sections_again = layout_sections_again;
9521 stubs_always_before_branch = group_size < 0;
9522 if (group_size < 0)
9523 stub_group_size = -group_size;
9524 else
9525 stub_group_size = group_size;
721956f4
AM		 9526
9527 group_sections (htab, stub_group_size, stubs_always_before_branch);
9528
721956f4
AM		 9529 while (1)
9530 {
9531 bfd *input_bfd;
9532 unsigned int bfd_indx;
9533 asection *stub_sec;
721956f4
AM		 9534
9535 htab->stub_iteration += 1;
721956f4
AM		 9536
9537 for (input_bfd = info->input_bfds, bfd_indx = 0;
9538 input_bfd != NULL;
9539 input_bfd = input_bfd->link_next, bfd_indx++)
9540 {
9541 Elf_Internal_Shdr *symtab_hdr;
9542 asection *section;
6cdc0ccc 9543 Elf_Internal_Sym *local_syms = NULL;
721956f4 9544
0c8d6e5c 9545 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 9546 continue;
9547
721956f4 9548 /* We'll need the symbol table in a second. */
0ffa91dd 9549 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 9550 if (symtab_hdr->sh_info == 0)
9551 continue;
9552
721956f4
AM		 9553 /* Walk over each section attached to the input bfd. */
9554 for (section = input_bfd->sections;
9555 section != NULL;
9556 section = section->next)
9557 {
721956f4 9558 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 9559
9560 /* If there aren't any relocs, then there's nothing more
9561 to do. */
9562 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 9563 || (section->flags & SEC_ALLOC) == 0
9564 || (section->flags & SEC_LOAD) == 0
9565 || (section->flags & SEC_CODE) == 0
721956f4
AM		 9566 || section->reloc_count == 0)
9567 continue;
9568
9569 /* If this section is a link-once section that will be
9570 discarded, then don't create any stubs. */
9571 if (section->output_section == NULL
9572 || section->output_section->owner != output_bfd)
9573 continue;
9574
1e2f5b6e
AM		 9575 /* Get the relocs. */
9576 internal_relocs
4ce794b7 9577 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9578 info->keep_memory);
721956f4 9579 if (internal_relocs == NULL)
1e2f5b6e 9580 goto error_ret_free_local;
721956f4
AM		 9581
9582 /* Now examine each relocation. */
9583 irela = internal_relocs;
9584 irelaend = irela + section->reloc_count;
9585 for (; irela < irelaend; irela++)
9586 {
4ce794b7
AM		 9587 enum elf_ppc64_reloc_type r_type;
9588 unsigned int r_indx;
721956f4
AM		 9589 enum ppc_stub_type stub_type;
9590 struct ppc_stub_hash_entry *stub_entry;
8387904d 9591 asection *sym_sec, *code_sec;
721956f4
AM		 9592 bfd_vma sym_value;
9593 bfd_vma destination;
8843416a 9594 bfd_boolean ok_dest;
721956f4 9595 struct ppc_link_hash_entry *hash;
8387904d 9596 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 9597 struct elf_link_hash_entry *h;
9598 Elf_Internal_Sym *sym;
721956f4
AM		 9599 char *stub_name;
9600 const asection *id_sec;
74f0fb50 9601 struct _opd_sec_data *opd;
721956f4
AM		 9602
9603 r_type = ELF64_R_TYPE (irela->r_info);
9604 r_indx = ELF64_R_SYM (irela->r_info);
9605
4ce794b7 9606 if (r_type >= R_PPC64_max)
721956f4
AM		 9607 {
9608 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9609 goto error_ret_free_internal;
721956f4
AM		 9610 }
9611
9612 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 9613 if (r_type != R_PPC64_REL24
9614 && r_type != R_PPC64_REL14
9615 && r_type != R_PPC64_REL14_BRTAKEN
9616 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 9617 continue;
9618
9619 /* Now determine the call target, its name, value,
9620 section. */
411e1bfb
AM		 9621 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9622 r_indx, input_bfd))
9623 goto error_ret_free_internal;
9624 hash = (struct ppc_link_hash_entry *) h;
9625
8843416a 9626 ok_dest = FALSE;
8387904d 9627 fdh = NULL;
7fe2b9a6 9628 sym_value = 0;
411e1bfb 9629 if (hash == NULL)
721956f4 9630 {
411e1bfb 9631 sym_value = sym->st_value;
8843416a 9632 ok_dest = TRUE;
721956f4 9633 }
7fe2b9a6
AM		 9634 else if (hash->elf.root.type == bfd_link_hash_defined
9635 || hash->elf.root.type == bfd_link_hash_defweak)
9636 {
9637 sym_value = hash->elf.root.u.def.value;
9638 if (sym_sec->output_section != NULL)
9639 ok_dest = TRUE;
9640 }
9641 else if (hash->elf.root.type == bfd_link_hash_undefweak
9642 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9643 {
99877b66 9644 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 9645 use the func descriptor sym instead if it is
9646 defined. */
ceb1f1ef 9647 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 9648 && (fdh = get_fdh (hash, htab)) != NULL)
9649 {
8387904d
AM		 9650 if (fdh->elf.root.type == bfd_link_hash_defined
9651 || fdh->elf.root.type == bfd_link_hash_defweak)
9652 {
9653 sym_sec = fdh->elf.root.u.def.section;
9654 sym_value = fdh->elf.root.u.def.value;
9655 if (sym_sec->output_section != NULL)
9656 ok_dest = TRUE;
9657 }
99877b66
AM		 9658 else
9659 fdh = NULL;
8387904d 9660 }
7fe2b9a6
AM		 9661 }
9662 else
9663 {
9664 bfd_set_error (bfd_error_bad_value);
9665 goto error_ret_free_internal;
721956f4
AM		 9666 }
9667
8843416a
AM		 9668 destination = 0;
9669 if (ok_dest)
9670 {
9671 sym_value += irela->r_addend;
9672 destination = (sym_value
9673 + sym_sec->output_offset
9674 + sym_sec->output_section->vma);
9675 }
9676
8387904d 9677 code_sec = sym_sec;
74f0fb50
AM		 9678 opd = get_opd_info (sym_sec);
9679 if (opd != NULL)
8387904d
AM		 9680 {
9681 bfd_vma dest;
9682
74f0fb50 9683 if (hash == NULL && opd->adjust != NULL)
8387904d 9684 {
74f0fb50 9685 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 9686 if (adjust == -1)
9687 continue;
9688 sym_value += adjust;
9689 }
9690 dest = opd_entry_value (sym_sec, sym_value,
9691 &code_sec, &sym_value);
9692 if (dest != (bfd_vma) -1)
9693 {
9694 destination = dest;
9695 if (fdh != NULL)
9696 {
9697 /* Fixup old ABI sym to point at code
9698 entry. */
99877b66 9699 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9700 hash->elf.root.u.def.section = code_sec;
9701 hash->elf.root.u.def.value = sym_value;
9702 }
9703 }
9704 }
9705
721956f4
AM		 9706 /* Determine what (if any) linker stub is needed. */
9707 stub_type = ppc_type_of_stub (section, irela, &hash,
9708 destination);
ad8e1ba5
AM		 9709
9710 if (stub_type != ppc_stub_plt_call)
9711 {
9712 /* Check whether we need a TOC adjusting stub.
9713 Since the linker pastes together pieces from
9714 different object files when creating the
9715 _init and _fini functions, it may be that a
9716 call to what looks like a local sym is in
9717 fact a call needing a TOC adjustment. */
8387904d
AM		 9718 if (code_sec != NULL
9719 && code_sec->output_section != NULL
9720 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9721 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9722 && (code_sec->has_toc_reloc
9723 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9724 stub_type = ppc_stub_long_branch_r2off;
9725 }
9726
721956f4
AM		 9727 if (stub_type == ppc_stub_none)
9728 continue;
9729
411e1bfb
AM		 9730 /* __tls_get_addr calls might be eliminated. */
9731 if (stub_type != ppc_stub_plt_call
9732 && hash != NULL
8387904d
AM		 9733 && (hash == htab->tls_get_addr
9734 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9735 && section->has_tls_reloc
9736 && irela != internal_relocs)
9737 {
9738 /* Get tls info. */
e7b938ca 9739 char *tls_mask;
411e1bfb 9740
0d4792f7 9741 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9742 irela - 1, input_bfd))
9743 goto error_ret_free_internal;
e7b938ca 9744 if (*tls_mask != 0)
411e1bfb
AM		 9745 continue;
9746 }
9747
721956f4
AM		 9748 /* Support for grouping stub sections. */
9749 id_sec = htab->stub_group[section->id].link_sec;
9750
9751 /* Get the name of this stub. */
9752 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9753 if (!stub_name)
9754 goto error_ret_free_internal;
9755
9756 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9757 stub_name, FALSE, FALSE);
721956f4
AM		 9758 if (stub_entry != NULL)
9759 {
9760 /* The proper stub has already been created. */
9761 free (stub_name);
9762 continue;
9763 }
9764
9765 stub_entry = ppc_add_stub (stub_name, section, htab);
9766 if (stub_entry == NULL)
9767 {
9768 free (stub_name);
6cdc0ccc
AM		 9769 error_ret_free_internal:
9770 if (elf_section_data (section)->relocs == NULL)
9771 free (internal_relocs);
9772 error_ret_free_local:
9773 if (local_syms != NULL
9774 && (symtab_hdr->contents
9775 != (unsigned char *) local_syms))
9776 free (local_syms);
b34976b6 9777 return FALSE;
721956f4
AM		 9778 }
9779
ad8e1ba5 9780 stub_entry->stub_type = stub_type;
721956f4 9781 stub_entry->target_value = sym_value;
8387904d 9782 stub_entry->target_section = code_sec;
721956f4 9783 stub_entry->h = hash;
411e1bfb 9784 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9785
9786 if (stub_entry->h != NULL)
9787 htab->stub_globals += 1;
721956f4
AM		 9788 }
9789
9790 /* We're done with the internal relocs, free them. */
6cdc0ccc 9791 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9792 free (internal_relocs);
721956f4 9793 }
6cdc0ccc
AM		 9794
9795 if (local_syms != NULL
9796 && symtab_hdr->contents != (unsigned char *) local_syms)
9797 {
9798 if (!info->keep_memory)
9799 free (local_syms);
9800 else
9801 symtab_hdr->contents = (unsigned char *) local_syms;
9802 }
721956f4
AM		 9803 }
9804
5c3dead3 9805 /* We may have added some stubs. Find out the new size of the
721956f4
AM		 9806 stub sections. */
9807 for (stub_sec = htab->stub_bfd->sections;
9808 stub_sec != NULL;
9809 stub_sec = stub_sec->next)
e717da7e 9810 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9811 {
5c3dead3 9812 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 9813 stub_sec->size = 0;
9814 stub_sec->reloc_count = 0;
84f5d08e 9815 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9816 }
eea6121a
AM		 9817
9818 htab->brlt->size = 0;
84f5d08e
AM		 9819 htab->brlt->reloc_count = 0;
9820 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9821 if (htab->relbrlt != NULL)
eea6121a 9822 htab->relbrlt->size = 0;
721956f4 9823
63bc6f6c 9824 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9825
176a0d42
AM		 9826 if (info->emitrelocations
9827 && htab->glink != NULL && htab->glink->size != 0)
9828 {
9829 htab->glink->reloc_count = 1;
9830 htab->glink->flags |= SEC_RELOC;
9831 }
9832
5c3dead3
AM		 9833 for (stub_sec = htab->stub_bfd->sections;
9834 stub_sec != NULL;
9835 stub_sec = stub_sec->next)
9836 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9837 && stub_sec->rawsize != stub_sec->size)
9838 break;
9839
9840 /* Exit from this loop when no stubs have been added, and no stubs
9841 have changed size. */
9842 if (stub_sec == NULL)
9843 break;
9844
721956f4
AM		 9845 /* Ask the linker to do its stuff. */
9846 (*htab->layout_sections_again) ();
9847 }
9848
c456f082 9849 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9850 section is empty, but it's too late. If we strip sections here,
9851 the dynamic symbol table is corrupted since the section symbol
9852 for the stripped section isn't written. */
721956f4 9853
b34976b6 9854 return TRUE;
721956f4
AM		 9855}
9856
9857/* Called after we have determined section placement. If sections
805fc799 9858 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9859
805fc799 9860bfd_vma
4ce794b7 9861ppc64_elf_toc (bfd *obfd)
721956f4 9862{
805fc799
AM		 9863 asection *s;
9864 bfd_vma TOCstart;
721956f4 9865
805fc799
AM		 9866 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9867 order. The TOC starts where the first of these sections starts. */
9868 s = bfd_get_section_by_name (obfd, ".got");
9869 if (s == NULL)
9870 s = bfd_get_section_by_name (obfd, ".toc");
9871 if (s == NULL)
9872 s = bfd_get_section_by_name (obfd, ".tocbss");
9873 if (s == NULL)
9874 s = bfd_get_section_by_name (obfd, ".plt");
9875 if (s == NULL)
9876 {
9877 /* This may happen for
9878 o references to TOC base (SYM@toc / TOC[tc0]) without a
9879 .toc directive
9880 o bad linker script
9881 o --gc-sections and empty TOC sections
9882
9883 FIXME: Warn user? */
9884
9885 /* Look for a likely section. We probably won't even be
9886 using TOCstart. */
9887 for (s = obfd->sections; s != NULL; s = s->next)
9888 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9889 == (SEC_ALLOC | SEC_SMALL_DATA))
9890 break;
721956f4 9891 if (s == NULL)
805fc799
AM		 9892 for (s = obfd->sections; s != NULL; s = s->next)
9893 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9894 == (SEC_ALLOC | SEC_SMALL_DATA))
9895 break;
721956f4 9896 if (s == NULL)
805fc799
AM		 9897 for (s = obfd->sections; s != NULL; s = s->next)
9898 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
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_ALLOC)
9903 break;
9904 }
721956f4 9905
805fc799
AM		 9906 TOCstart = 0;
9907 if (s != NULL)
9908 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9909
805fc799 9910 return TOCstart;
721956f4
AM		 9911}
9912
9913/* Build all the stubs associated with the current output file.
9914 The stubs are kept in a hash table attached to the main linker
9915 hash table. This function is called via gldelf64ppc_finish. */
9916
b34976b6 9917bfd_boolean
4ce794b7
AM		 9918ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9919 struct bfd_link_info *info,
9920 char **stats)
5d1634d7
AM		 9921{
9922 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9923 asection *stub_sec;
5d1634d7 9924 bfd_byte *p;
e717da7e 9925 int stub_sec_count = 0;
5d1634d7 9926
ad8e1ba5 9927 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9928
9929 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9930 for (stub_sec = htab->stub_bfd->sections;
9931 stub_sec != NULL;
9932 stub_sec = stub_sec->next)
eea6121a
AM		 9933 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9934 && stub_sec->size != 0)
e717da7e 9935 {
eea6121a
AM		 9936 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9937 if (stub_sec->contents == NULL)
9938 return FALSE;
9939 /* We want to check that built size is the same as calculated
9940 size. rawsize is a convenient location to use. */
9941 stub_sec->rawsize = stub_sec->size;
9942 stub_sec->size = 0;
e717da7e 9943 }
5d1634d7 9944
23eb7e01 9945 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9946 {
9f951329 9947 unsigned int indx;
ad8e1ba5 9948 bfd_vma plt0;
9f951329 9949
721956f4 9950 /* Build the .glink plt call stub. */
97b639ba
AM		 9951 if (htab->emit_stub_syms)
9952 {
9953 struct elf_link_hash_entry *h;
468392fb
AM		 9954 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
9955 TRUE, FALSE, FALSE);
97b639ba
AM		 9956 if (h == NULL)
9957 return FALSE;
9958 if (h->root.type == bfd_link_hash_new)
9959 {
9960 h->root.type = bfd_link_hash_defined;
9961 h->root.u.def.section = htab->glink;
ee4bf8d2 9962 h->root.u.def.value = 8;
f5385ebf
AM		 9963 h->ref_regular = 1;
9964 h->def_regular = 1;
9965 h->ref_regular_nonweak = 1;
9966 h->forced_local = 1;
9967 h->non_elf = 0;
97b639ba
AM		 9968 }
9969 }
176a0d42
AM		 9970 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
9971 if (info->emitrelocations)
9972 {
9973 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
9974 if (r == NULL)
9975 return FALSE;
9976 r->r_offset = (htab->glink->output_offset
9977 + htab->glink->output_section->vma);
9978 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
9979 r->r_addend = plt0;
9980 }
4ce794b7 9981 p = htab->glink->contents;
176a0d42 9982 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 9983 bfd_put_64 (htab->glink->owner, plt0, p);
9984 p += 8;
9985 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9986 p += 4;
ee4bf8d2 9987 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9988 p += 4;
ee4bf8d2 9989 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9990 p += 4;
ee4bf8d2 9991 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9992 p += 4;
ee4bf8d2 9993 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9994 p += 4;
ee4bf8d2 9995 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9996 p += 4;
ee4bf8d2 9997 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9998 p += 4;
4ce794b7 9999 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 10000 p += 4;
4ce794b7 10001 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 10002 p += 4;
4ce794b7 10003 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 10004 p += 4;
4ce794b7 10005 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 10006 p += 4;
ee4bf8d2
AM		 10007 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
10008 {
10009 bfd_put_32 (htab->glink->owner, NOP, p);
10010 p += 4;
10011 }
ad8e1ba5 10012
9f951329
AM		 10013 /* Build the .glink lazy link call stubs. */
10014 indx = 0;
eea6121a 10015 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 10016 {
10017 if (indx < 0x8000)
10018 {
4ce794b7 10019 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 10020 p += 4;
10021 }
10022 else
10023 {
4ce794b7 10024 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 10025 p += 4;
4ce794b7 10026 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 10027 p += 4;
10028 }
4ce794b7 10029 bfd_put_32 (htab->glink->owner,
ee4bf8d2 10030 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 10031 indx++;
9f951329
AM		 10032 p += 4;
10033 }
eea6121a 10034 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 10035 }
5d1634d7 10036
eea6121a 10037 if (htab->brlt->size != 0)
721956f4 10038 {
4ce794b7 10039 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 10040 htab->brlt->size);
4ce794b7 10041 if (htab->brlt->contents == NULL)
b34976b6 10042 return FALSE;
721956f4 10043 }
ee75fd95 10044 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 10045 {
10046 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 10047 htab->relbrlt->size);
63bc6f6c
AM		 10048 if (htab->relbrlt->contents == NULL)
10049 return FALSE;
10050 }
5d1634d7 10051
721956f4
AM		 10052 /* Build the stubs as directed by the stub hash table. */
10053 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 10054
aa8a7074
AM		 10055 if (htab->relbrlt != NULL)
10056 htab->relbrlt->reloc_count = 0;
10057
721956f4
AM		 10058 for (stub_sec = htab->stub_bfd->sections;
10059 stub_sec != NULL;
10060 stub_sec = stub_sec->next)
e717da7e
AM		 10061 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10062 {
10063 stub_sec_count += 1;
eea6121a 10064 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 10065 break;
10066 }
5d1634d7 10067
721956f4 10068 if (stub_sec != NULL
eea6121a 10069 || htab->glink->rawsize != htab->glink->size)
5d1634d7 10070 {
b34976b6 10071 htab->stub_error = TRUE;
721956f4 10072 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 10073 }
721956f4 10074
d2a300cf
AM		 10075 if (htab->stub_error)
10076 return FALSE;
10077
10078 if (stats != NULL)
10079 {
10080 *stats = bfd_malloc (500);
10081 if (*stats == NULL)
10082 return FALSE;
10083
ee75fd95 10084 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 10085 " branch %lu\n"
10086 " toc adjust %lu\n"
10087 " long branch %lu\n"
10088 " long toc adj %lu\n"
10089 " plt call %lu"),
e717da7e 10090 stub_sec_count,
ee75fd95 10091 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 10092 htab->stub_count[ppc_stub_long_branch - 1],
10093 htab->stub_count[ppc_stub_long_branch_r2off - 1],
10094 htab->stub_count[ppc_stub_plt_branch - 1],
10095 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
10096 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 10097 }
10098 return TRUE;
5bd4f169
AM		 10099}
10100
99877b66
AM		 10101/* This function undoes the changes made by add_symbol_adjust. */
10102
10103static bfd_boolean
10104undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10105{
10106 struct ppc_link_hash_entry *eh;
10107
10108 if (h->root.type == bfd_link_hash_indirect)
10109 return TRUE;
10110
10111 if (h->root.type == bfd_link_hash_warning)
10112 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10113
10114 eh = (struct ppc_link_hash_entry *) h;
10115 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
10116 return TRUE;
10117
10118 eh->elf.root.type = bfd_link_hash_undefined;
10119 return TRUE;
10120}
10121
10122void
10123ppc64_elf_restore_symbols (struct bfd_link_info *info)
10124{
10125 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10126 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
10127}
10128
60124e18
AM		 10129/* What to do when ld finds relocations against symbols defined in
10130 discarded sections. */
10131
10132static unsigned int
10133ppc64_elf_action_discarded (asection *sec)
10134{
10135 if (strcmp (".opd", sec->name) == 0)
10136 return 0;
10137
10138 if (strcmp (".toc", sec->name) == 0)
10139 return 0;
10140
bce50a28
JJ		 10141 if (strcmp (".toc1", sec->name) == 0)
10142 return 0;
10143
60124e18
AM		 10144 return _bfd_elf_default_action_discarded (sec);
10145}
10146
5bd4f169
AM		 10147/* The RELOCATE_SECTION function is called by the ELF backend linker
10148 to handle the relocations for a section.
10149
10150 The relocs are always passed as Rela structures; if the section
10151 actually uses Rel structures, the r_addend field will always be
10152 zero.
10153
10154 This function is responsible for adjust the section contents as
10155 necessary, and (if using Rela relocs and generating a
1049f94e 10156 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 10157 necessary.
10158
10159 This function does not have to worry about setting the reloc
10160 address or the reloc symbol index.
10161
10162 LOCAL_SYMS is a pointer to the swapped in local symbols.
10163
10164 LOCAL_SECTIONS is an array giving the section in the input file
10165 corresponding to the st_shndx field of each local symbol.
10166
10167 The global hash table entry for the global symbols can be found
10168 via elf_sym_hashes (input_bfd).
10169
1049f94e 10170 When generating relocatable output, this function must handle
5bd4f169
AM		 10171 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10172 going to be the section symbol corresponding to the output
10173 section, which means that the addend must be adjusted
10174 accordingly. */
10175
b34976b6 10176static bfd_boolean
4ce794b7
AM		 10177ppc64_elf_relocate_section (bfd *output_bfd,
10178 struct bfd_link_info *info,
10179 bfd *input_bfd,
10180 asection *input_section,
10181 bfd_byte *contents,
10182 Elf_Internal_Rela *relocs,
10183 Elf_Internal_Sym *local_syms,
10184 asection **local_sections)
5bd4f169 10185{
65f38f15 10186 struct ppc_link_hash_table *htab;
5bd4f169
AM		 10187 Elf_Internal_Shdr *symtab_hdr;
10188 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 10189 Elf_Internal_Rela *rel;
10190 Elf_Internal_Rela *relend;
411e1bfb
AM		 10191 Elf_Internal_Rela outrel;
10192 bfd_byte *loc;
411e1bfb 10193 struct got_entry **local_got_ents;
5bd4f169 10194 bfd_vma TOCstart;
b34976b6
AM		 10195 bfd_boolean ret = TRUE;
10196 bfd_boolean is_opd;
96e0dda4 10197 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 10198 bfd_boolean is_power4 = FALSE;
4fe5ca5b 10199 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 10200
65f38f15 10201 /* Initialize howto table if needed. */
5bd4f169 10202 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 10203 ppc_howto_init ();
10204
65f38f15 10205 htab = ppc_hash_table (info);
ee75fd95
AM		 10206
10207 /* Don't relocate stub sections. */
10208 if (input_section->owner == htab->stub_bfd)
10209 return TRUE;
10210
0c8d6e5c 10211 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 10212
411e1bfb 10213 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 10214 TOCstart = elf_gp (output_bfd);
0ffa91dd 10215 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 10216 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 10217 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 10218
5bd4f169
AM		 10219 rel = relocs;
10220 relend = relocs + input_section->reloc_count;
10221 for (; rel < relend; rel++)
10222 {
04c9666a 10223 enum elf_ppc64_reloc_type r_type;
4cc603a5 10224 bfd_vma addend, orig_addend;
5bd4f169
AM		 10225 bfd_reloc_status_type r;
10226 Elf_Internal_Sym *sym;
10227 asection *sec;
039b3fef
AM		 10228 struct elf_link_hash_entry *h_elf;
10229 struct ppc_link_hash_entry *h;
10230 struct ppc_link_hash_entry *fdh;
5bd4f169 10231 const char *sym_name;
0d4792f7 10232 unsigned long r_symndx, toc_symndx;
951fd09b 10233 char tls_mask, tls_gd, tls_type;
0d4792f7 10234 char sym_type;
5bd4f169 10235 bfd_vma relocation;
b34976b6
AM		 10236 bfd_boolean unresolved_reloc;
10237 bfd_boolean warned;
50bc7936 10238 unsigned long insn, mask;
721956f4
AM		 10239 struct ppc_stub_hash_entry *stub_entry;
10240 bfd_vma max_br_offset;
10241 bfd_vma from;
5bd4f169 10242
4ce794b7 10243 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 10244 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 10245
10246 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10247 symbol of the previous ADDR64 reloc. The symbol gives us the
10248 proper TOC base to use. */
10249 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
10250 && rel != relocs
10251 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
10252 && is_opd)
10253 r_symndx = ELF64_R_SYM (rel[-1].r_info);
10254
4ce794b7
AM		 10255 sym = NULL;
10256 sec = NULL;
039b3fef 10257 h_elf = NULL;
4ce794b7 10258 sym_name = NULL;
b34976b6
AM		 10259 unresolved_reloc = FALSE;
10260 warned = FALSE;
4cc603a5 10261 orig_addend = rel->r_addend;
65f38f15 10262
0b13192e 10263 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 10264 {
10265 /* It's a local symbol. */
74f0fb50 10266 struct _opd_sec_data *opd;
4025353c 10267
5bd4f169
AM		 10268 sym = local_syms + r_symndx;
10269 sec = local_sections[r_symndx];
26c61ae5 10270 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 10271 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 10272 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 10273 opd = get_opd_info (sec);
10274 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 10275 {
74f0fb50 10276 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 10277 if (adjust == -1)
10278 relocation = 0;
10279 else
4cc603a5
AM		 10280 {
10281 /* If this is a relocation against the opd section sym
10282 and we have edited .opd, adjust the reloc addend so
10283 that ld -r and ld --emit-relocs output is correct.
10284 If it is a reloc against some other .opd symbol,
10285 then the symbol value will be adjusted later. */
10286 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
10287 rel->r_addend += adjust;
10288 else
10289 relocation += adjust;
10290 }
1e2f5b6e 10291 }
5bd4f169
AM		 10292 }
10293 else
10294 {
b2a8e766
AM		 10295 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
10296 r_symndx, symtab_hdr, sym_hashes,
039b3fef 10297 h_elf, sec, relocation,
b2a8e766 10298 unresolved_reloc, warned);
039b3fef
AM		 10299 sym_name = h_elf->root.root.string;
10300 sym_type = h_elf->type;
5bd4f169 10301 }
039b3fef 10302 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 10303
ab96bf03
AM		 10304 if (sec != NULL && elf_discarded_section (sec))
10305 {
10306 /* For relocs against symbols from removed linkonce sections,
10307 or sections discarded by a linker script, we just want the
10308 section contents zeroed. Avoid any special processing. */
10309 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10310 contents + rel->r_offset);
10311 rel->r_info = 0;
10312 rel->r_addend = 0;
10313 continue;
10314 }
10315
10316 if (info->relocatable)
10317 continue;
10318
951fd09b
AM		 10319 /* TLS optimizations. Replace instruction sequences and relocs
10320 based on information we collected in tls_optimize. We edit
10321 RELOCS so that --emit-relocs will output something sensible
10322 for the final instruction stream. */
10323 tls_mask = 0;
10324 tls_gd = 0;
0d4792f7 10325 toc_symndx = 0;
d881513a 10326 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 10327 {
10328 if (h != NULL)
039b3fef 10329 tls_mask = h->tls_mask;
411e1bfb
AM		 10330 else if (local_got_ents != NULL)
10331 {
e7b938ca
AM		 10332 char *lgot_masks;
10333 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10334 tls_mask = lgot_masks[r_symndx];
411e1bfb 10335 }
0d4792f7
AM		 10336 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10337 {
10338 /* Check for toc tls entries. */
10339 char *toc_tls;
10340
10341 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10342 rel, input_bfd))
10343 return FALSE;
10344
10345 if (toc_tls)
10346 tls_mask = *toc_tls;
10347 }
10348 }
10349
10350 /* Check that tls relocs are used with tls syms, and non-tls
10351 relocs are used with non-tls syms. */
10352 if (r_symndx != 0
10353 && r_type != R_PPC64_NONE
10354 && (h == NULL
039b3fef
AM		 10355 || h->elf.root.type == bfd_link_hash_defined
10356 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 10357 && (IS_PPC64_TLS_RELOC (r_type)
10358 != (sym_type == STT_TLS
10359 || (sym_type == STT_SECTION
10360 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7
AM		 10361 {
10362 if (r_type == R_PPC64_TLS && tls_mask != 0)
10363 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10364 ;
10365 else
10366 (*_bfd_error_handler)
1d483afe 10367 (!IS_PPC64_TLS_RELOC (r_type)
d003868e
AM		 10368 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10369 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10370 input_bfd,
10371 input_section,
0d4792f7
AM		 10372 (long) rel->r_offset,
10373 ppc64_elf_howto_table[r_type]->name,
10374 sym_name);
411e1bfb
AM		 10375 }
10376
10377 /* Ensure reloc mapping code below stays sane. */
10378 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10379 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10380 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10381 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10382 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10383 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10384 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10385 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10386 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10387 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10388 abort ();
0d4792f7 10389
411e1bfb
AM		 10390 switch (r_type)
10391 {
10392 default:
411e1bfb
AM		 10393 break;
10394
10395 case R_PPC64_TOC16:
10396 case R_PPC64_TOC16_LO:
10397 case R_PPC64_TOC16_DS:
10398 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 10399 {
10400 /* Check for toc tls entries. */
10401 char *toc_tls;
951fd09b 10402 int retval;
411e1bfb 10403
0d4792f7
AM		 10404 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10405 rel, input_bfd);
951fd09b 10406 if (retval == 0)
411e1bfb
AM		 10407 return FALSE;
10408
10409 if (toc_tls)
10410 {
951fd09b 10411 tls_mask = *toc_tls;
411e1bfb
AM		 10412 if (r_type == R_PPC64_TOC16_DS
10413 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 10414 {
10415 if (tls_mask != 0
10416 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10417 goto toctprel;
10418 }
411e1bfb 10419 else
951fd09b
AM		 10420 {
10421 /* If we found a GD reloc pair, then we might be
10422 doing a GD->IE transition. */
10423 if (retval == 2)
10424 {
10425 tls_gd = TLS_TPRELGD;
10426 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10427 goto tls_ldgd_opt;
951fd09b
AM		 10428 }
10429 else if (retval == 3)
10430 {
10431 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 10432 goto tls_ldgd_opt;
951fd09b
AM		 10433 }
10434 }
411e1bfb
AM		 10435 }
10436 }
10437 break;
10438
10439 case R_PPC64_GOT_TPREL16_DS:
10440 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 10441 if (tls_mask != 0
10442 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10443 {
81407a69 10444 toctprel:
4fe5ca5b 10445 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 10446 insn &= 31 << 21;
10447 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10448 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10449 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 10450 if (toc_symndx != 0)
10451 {
10452 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10453 /* We changed the symbol. Start over in order to
10454 get h, sym, sec etc. right. */
10455 rel--;
10456 continue;
10457 }
10458 else
10459 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10460 }
10461 break;
10462
10463 case R_PPC64_TLS:
951fd09b
AM		 10464 if (tls_mask != 0
10465 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10466 {
50bc7936 10467 bfd_vma rtra;
411e1bfb 10468 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10469 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 10470 == ((31 << 26) | (13 << 11)))
10471 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10472 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 10473 == ((31 << 26) | (13 << 16)))
10474 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10475 else
10476 abort ();
10477 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10478 /* add -> addi. */
10479 insn = 14 << 26;
10480 else if ((insn & (31 << 1)) == 23 << 1
10481 && ((insn & (31 << 6)) < 14 << 6
10482 || ((insn & (31 << 6)) >= 16 << 6
10483 && (insn & (31 << 6)) < 24 << 6)))
10484 /* load and store indexed -> dform. */
10485 insn = (32 | ((insn >> 6) & 31)) << 26;
10486 else if ((insn & (31 << 1)) == 21 << 1
10487 && (insn & (0x1a << 6)) == 0)
10488 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10489 insn = (((58 | ((insn >> 6) & 4)) << 26)
10490 | ((insn >> 6) & 1));
10491 else if ((insn & (31 << 1)) == 21 << 1
10492 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10493 /* lwax -> lwa. */
10494 insn = (58 << 26) | 2;
10495 else
10496 abort ();
10497 insn |= rtra;
10498 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10499 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 10500 PPC64_TPREL16_LO which is at low-order half-word. */
10501 rel->r_offset += d_offset;
0d4792f7
AM		 10502 r_type = R_PPC64_TPREL16_LO;
10503 if (toc_symndx != 0)
10504 {
10505 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10506 /* We changed the symbol. Start over in order to
10507 get h, sym, sec etc. right. */
10508 rel--;
10509 continue;
10510 }
10511 else
10512 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10513 }
10514 break;
10515
411e1bfb
AM		 10516 case R_PPC64_GOT_TLSGD16_HI:
10517 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 10518 tls_gd = TLS_TPRELGD;
10519 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10520 goto tls_gdld_hi;
10521 break;
10522
411e1bfb
AM		 10523 case R_PPC64_GOT_TLSLD16_HI:
10524 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10525 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10526 {
951fd09b
AM		 10527 tls_gdld_hi:
10528 if ((tls_mask & tls_gd) != 0)
10529 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10530 + R_PPC64_GOT_TPREL16_DS);
10531 else
411e1bfb 10532 {
951fd09b 10533 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10534 rel->r_offset -= d_offset;
951fd09b 10535 r_type = R_PPC64_NONE;
411e1bfb 10536 }
951fd09b 10537 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10538 }
10539 break;
10540
951fd09b
AM		 10541 case R_PPC64_GOT_TLSGD16:
10542 case R_PPC64_GOT_TLSGD16_LO:
10543 tls_gd = TLS_TPRELGD;
10544 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10545 goto tls_ldgd_opt;
951fd09b 10546 break;
411e1bfb 10547
951fd09b
AM		 10548 case R_PPC64_GOT_TLSLD16:
10549 case R_PPC64_GOT_TLSLD16_LO:
10550 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10551 {
102890f0
AM		 10552 bfd_vma insn1, insn2, insn3;
10553 bfd_vma offset;
10554
10555 tls_ldgd_opt:
10556 /* We know that the next reloc is on a tls_get_addr
10557 call, since ppc64_elf_tls_optimize checks this. */
10558 offset = rel[1].r_offset;
10559 insn1 = bfd_get_32 (output_bfd,
10560 contents + rel->r_offset - d_offset);
10561 insn3 = bfd_get_32 (output_bfd,
10562 contents + offset + 4);
10563 if ((tls_mask & tls_gd) != 0)
411e1bfb 10564 {
102890f0
AM		 10565 /* IE */
10566 insn1 &= (1 << 26) - (1 << 2);
10567 insn1 |= 58 << 26; /* ld */
10568 insn2 = 0x7c636a14; /* add 3,3,13 */
10569 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
10570 R_PPC64_NONE);
10571 if ((tls_mask & TLS_EXPLICIT) == 0)
10572 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10573 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 10574 else
102890f0
AM		 10575 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10576 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10577 }
10578 else
10579 {
10580 /* LE */
10581 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10582 insn2 = 0x38630000; /* addi 3,3,0 */
10583 if (tls_gd == 0)
951fd09b 10584 {
102890f0 10585 /* Was an LD reloc. */
1d483afe
AM		 10586 if (toc_symndx)
10587 sec = local_sections[toc_symndx];
10588 for (r_symndx = 0;
10589 r_symndx < symtab_hdr->sh_info;
10590 r_symndx++)
10591 if (local_sections[r_symndx] == sec)
10592 break;
10593 if (r_symndx >= symtab_hdr->sh_info)
10594 r_symndx = 0;
102890f0 10595 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM		 10596 if (r_symndx != 0)
10597 rel->r_addend -= (local_syms[r_symndx].st_value
10598 + sec->output_offset
10599 + sec->output_section->vma);
10600 rel[1].r_addend = rel->r_addend;
951fd09b 10601 }
102890f0
AM		 10602 else if (toc_symndx != 0)
10603 r_symndx = toc_symndx;
10604 r_type = R_PPC64_TPREL16_HA;
10605 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10606 rel[1].r_info = ELF64_R_INFO (r_symndx,
10607 R_PPC64_TPREL16_LO);
10608 rel[1].r_offset += d_offset;
10609 }
10610 if (insn3 == NOP
10611 || insn3 == CROR_151515 || insn3 == CROR_313131)
10612 {
10613 insn3 = insn2;
10614 insn2 = NOP;
10615 rel[1].r_offset += 4;
10616 }
10617 bfd_put_32 (output_bfd, insn1,
10618 contents + rel->r_offset - d_offset);
10619 bfd_put_32 (output_bfd, insn2, contents + offset);
10620 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10621 if (tls_gd == 0 || toc_symndx != 0)
10622 {
10623 /* We changed the symbol. Start over in order
10624 to get h, sym, sec etc. right. */
10625 rel--;
10626 continue;
411e1bfb 10627 }
411e1bfb 10628 }
411e1bfb
AM		 10629 break;
10630
10631 case R_PPC64_DTPMOD64:
951fd09b
AM		 10632 if (rel + 1 < relend
10633 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10634 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10635 {
951fd09b
AM		 10636 if ((tls_mask & TLS_GD) == 0)
10637 {
10638 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10639 if ((tls_mask & TLS_TPRELGD) != 0)
10640 r_type = R_PPC64_TPREL64;
10641 else
10642 {
4ce794b7 10643 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 10644 r_type = R_PPC64_NONE;
10645 }
10646 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10647 }
10648 }
10649 else
10650 {
10651 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10652 {
4ce794b7 10653 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10654 r_type = R_PPC64_NONE;
951fd09b 10655 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10656 }
411e1bfb
AM		 10657 }
10658 break;
10659
10660 case R_PPC64_TPREL64:
951fd09b 10661 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 10662 {
10663 r_type = R_PPC64_NONE;
10664 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10665 }
10666 break;
10667 }
10668
10669 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10670 insn = 0;
b25116a9
AM		 10671 max_br_offset = 1 << 25;
10672 addend = rel->r_addend;
65f38f15 10673 switch (r_type)
5bd4f169
AM		 10674 {
10675 default:
65f38f15 10676 break;
5bd4f169 10677
65f38f15
AM		 10678 /* Branch taken prediction relocations. */
10679 case R_PPC64_ADDR14_BRTAKEN:
10680 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 10681 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10682 /* Fall thru. */
65f38f15 10683
86c76c7b 10684 /* Branch not taken prediction relocations. */
65f38f15
AM		 10685 case R_PPC64_ADDR14_BRNTAKEN:
10686 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 10687 insn |= bfd_get_32 (output_bfd,
10688 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10689 /* Fall thru. */
86c76c7b 10690
b25116a9
AM		 10691 case R_PPC64_REL14:
10692 max_br_offset = 1 << 15;
10693 /* Fall thru. */
5bd4f169 10694
65f38f15 10695 case R_PPC64_REL24:
ad8e1ba5
AM		 10696 /* Calls to functions with a different TOC, such as calls to
10697 shared objects, need to alter the TOC pointer. This is
10698 done using a linkage stub. A REL24 branching to these
10699 linkage stubs needs to be followed by a nop, as the nop
10700 will be replaced with an instruction to restore the TOC
10701 base pointer. */
b25116a9 10702 stub_entry = NULL;
8387904d 10703 fdh = h;
ad8e1ba5 10704 if (((h != NULL
039b3fef
AM		 10705 && (((fdh = h->oh) != NULL
10706 && fdh->elf.plt.plist != NULL)
10707 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10708 || (sec != NULL
ad8e1ba5 10709 && sec->output_section != NULL
b25116a9 10710 && sec->id <= htab->top_id
ad8e1ba5
AM		 10711 && (htab->stub_group[sec->id].toc_off
10712 != htab->stub_group[input_section->id].toc_off)))
721956f4 10713 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 10714 rel, htab)) != NULL
10715 && (stub_entry->stub_type == ppc_stub_plt_call
10716 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10717 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10718 {
b25116a9 10719 bfd_boolean can_plt_call = FALSE;
721956f4 10720
eea6121a 10721 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10722 {
b25116a9
AM		 10723 unsigned long nop;
10724 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10725 if (nop == NOP
10726 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10727 {
4ce794b7 10728 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10729 contents + rel->r_offset + 4);
b25116a9 10730 can_plt_call = TRUE;
41bd81ab 10731 }
5bd4f169 10732 }
721956f4
AM		 10733
10734 if (!can_plt_call)
10735 {
ad8e1ba5
AM		 10736 if (stub_entry->stub_type == ppc_stub_plt_call)
10737 {
10738 /* If this is a plain branch rather than a branch
4fa1c237
AM		 10739 and link, don't require a nop. However, don't
10740 allow tail calls in a shared library as they
10741 will result in r2 being corrupted. */
b25116a9
AM		 10742 unsigned long br;
10743 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10744 if (info->executable && (br & 1) == 0)
b25116a9 10745 can_plt_call = TRUE;
15b552e9
AM		 10746 else
10747 stub_entry = NULL;
ad8e1ba5 10748 }
6ab189d5 10749 else if (h != NULL
039b3fef 10750 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10751 ".__libc_start_main") == 0)
10752 {
10753 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10754 can_plt_call = TRUE;
6ab189d5 10755 }
ad8e1ba5
AM		 10756 else
10757 {
10758 if (strcmp (input_section->output_section->name,
10759 ".init") == 0
10760 || strcmp (input_section->output_section->name,
10761 ".fini") == 0)
10762 (*_bfd_error_handler)
d003868e 10763 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10764 "not supported using your crt files; "
10765 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10766 input_bfd,
10767 input_section,
ad8e1ba5
AM		 10768 (long) rel->r_offset);
10769 else
10770 (*_bfd_error_handler)
d003868e 10771 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10772 "does not allow automatic multiple TOCs; "
10773 "recompile with -mminimal-toc or "
10774 "-fno-optimize-sibling-calls, "
10775 "or make `%s' extern"),
d003868e
AM		 10776 input_bfd,
10777 input_section,
ad8e1ba5
AM		 10778 (long) rel->r_offset,
10779 sym_name,
10780 sym_name);
10781 bfd_set_error (bfd_error_bad_value);
10782 ret = FALSE;
10783 }
721956f4
AM		 10784 }
10785
b25116a9
AM		 10786 if (can_plt_call
10787 && stub_entry->stub_type == ppc_stub_plt_call)
10788 unresolved_reloc = FALSE;
10789 }
10790
8387904d
AM		 10791 if (stub_entry == NULL
10792 && get_opd_info (sec) != NULL)
10793 {
10794 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 10795 bfd_vma off = (relocation + addend
10796 - sec->output_section->vma
10797 - sec->output_offset);
8387904d
AM		 10798 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10799 if (dest != (bfd_vma) -1)
10800 {
10801 relocation = dest;
10802 addend = 0;
10803 }
10804 }
10805
b25116a9
AM		 10806 /* If the branch is out of reach we ought to have a long
10807 branch stub. */
10808 from = (rel->r_offset
10809 + input_section->output_offset
10810 + input_section->output_section->vma);
10811
10812 if (stub_entry == NULL
4cc603a5 10813 && (relocation + addend - from + max_br_offset
b25116a9
AM		 10814 >= 2 * max_br_offset)
10815 && r_type != R_PPC64_ADDR14_BRTAKEN
10816 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10817 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10818 htab);
b25116a9
AM		 10819
10820 if (stub_entry != NULL)
10821 {
10822 /* Munge up the value and addend so that we call the stub
10823 rather than the procedure directly. */
10824 relocation = (stub_entry->stub_offset
10825 + stub_entry->stub_sec->output_offset
10826 + stub_entry->stub_sec->output_section->vma);
10827 addend = 0;
10828 }
10829
10830 if (insn != 0)
10831 {
10832 if (is_power4)
721956f4 10833 {
b25116a9
AM		 10834 /* Set 'a' bit. This is 0b00010 in BO field for branch
10835 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10836 for branch on CTR insns (BO == 1a00t or 1a01t). */
10837 if ((insn & (0x14 << 21)) == (0x04 << 21))
10838 insn |= 0x02 << 21;
10839 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10840 insn |= 0x08 << 21;
10841 else
10842 break;
10843 }
10844 else
10845 {
10846 /* Invert 'y' bit if not the default. */
4cc603a5 10847 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10848 insn ^= 0x01 << 21;
721956f4 10849 }
b25116a9
AM		 10850
10851 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10852 }
e86ce104 10853
06da1e8e
AM		 10854 /* NOP out calls to undefined weak functions.
10855 We can thus call a weak function without first
10856 checking whether the function is defined. */
b25116a9 10857 else if (h != NULL
039b3fef 10858 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10859 && r_type == R_PPC64_REL24
10860 && relocation == 0
4cc603a5 10861 && addend == 0)
e86ce104 10862 {
06da1e8e
AM		 10863 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10864 continue;
e86ce104 10865 }
65f38f15
AM		 10866 break;
10867 }
5bd4f169 10868
65f38f15 10869 /* Set `addend'. */
411e1bfb 10870 tls_type = 0;
65f38f15
AM		 10871 switch (r_type)
10872 {
10873 default:
10874 (*_bfd_error_handler)
d003868e
AM		 10875 (_("%B: unknown relocation type %d for symbol %s"),
10876 input_bfd, (int) r_type, sym_name);
5bd4f169 10877
65f38f15 10878 bfd_set_error (bfd_error_bad_value);
b34976b6 10879 ret = FALSE;
65f38f15 10880 continue;
5bd4f169 10881
65f38f15 10882 case R_PPC64_NONE:
411e1bfb 10883 case R_PPC64_TLS:
04c9666a
AM		 10884 case R_PPC64_GNU_VTINHERIT:
10885 case R_PPC64_GNU_VTENTRY:
65f38f15 10886 continue;
5bd4f169
AM		 10887
10888 /* GOT16 relocations. Like an ADDR16 using the symbol's
10889 address in the GOT as relocation value instead of the
411e1bfb 10890 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10891 symbol and put the symbol value there. */
411e1bfb
AM		 10892 case R_PPC64_GOT_TLSGD16:
10893 case R_PPC64_GOT_TLSGD16_LO:
10894 case R_PPC64_GOT_TLSGD16_HI:
10895 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10896 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10897 goto dogot;
10898
10899 case R_PPC64_GOT_TLSLD16:
10900 case R_PPC64_GOT_TLSLD16_LO:
10901 case R_PPC64_GOT_TLSLD16_HI:
10902 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10903 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10904 goto dogot;
10905
10906 case R_PPC64_GOT_TPREL16_DS:
10907 case R_PPC64_GOT_TPREL16_LO_DS:
10908 case R_PPC64_GOT_TPREL16_HI:
10909 case R_PPC64_GOT_TPREL16_HA:
10910 tls_type = TLS_TLS | TLS_TPREL;
10911 goto dogot;
10912
10913 case R_PPC64_GOT_DTPREL16_DS:
10914 case R_PPC64_GOT_DTPREL16_LO_DS:
10915 case R_PPC64_GOT_DTPREL16_HI:
10916 case R_PPC64_GOT_DTPREL16_HA:
10917 tls_type = TLS_TLS | TLS_DTPREL;
10918 goto dogot;
10919
65f38f15
AM		 10920 case R_PPC64_GOT16:
10921 case R_PPC64_GOT16_LO:
10922 case R_PPC64_GOT16_HI:
10923 case R_PPC64_GOT16_HA:
10924 case R_PPC64_GOT16_DS:
10925 case R_PPC64_GOT16_LO_DS:
411e1bfb 10926 dogot:
5bd4f169
AM		 10927 {
10928 /* Relocation is to the entry for this symbol in the global
10929 offset table. */
e717da7e 10930 asection *got;
d881513a 10931 bfd_vma *offp;
5bd4f169 10932 bfd_vma off;
d881513a 10933 unsigned long indx = 0;
65f38f15 10934
d881513a
AM		 10935 if (tls_type == (TLS_TLS | TLS_LD)
10936 && (h == NULL
f5385ebf 10937 || !h->elf.def_dynamic))
e717da7e 10938 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10939 else
5bd4f169 10940 {
d881513a 10941 struct got_entry *ent;
5bd4f169 10942
d881513a
AM		 10943 if (h != NULL)
10944 {
10945 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10946 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10947 &h->elf)
d881513a 10948 || (info->shared
039b3fef 10949 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10950 /* This is actually a static link, or it is a
10951 -Bsymbolic link and the symbol is defined
10952 locally, or the symbol was forced to be local
10953 because of a version file. */
10954 ;
10955 else
10956 {
039b3fef 10957 indx = h->elf.dynindx;
d881513a
AM		 10958 unresolved_reloc = FALSE;
10959 }
039b3fef 10960 ent = h->elf.got.glist;
d881513a 10961 }
411e1bfb 10962 else
5bd4f169 10963 {
d881513a
AM		 10964 if (local_got_ents == NULL)
10965 abort ();
10966 ent = local_got_ents[r_symndx];
5bd4f169 10967 }
d881513a
AM		 10968
10969 for (; ent != NULL; ent = ent->next)
4cc603a5 10970 if (ent->addend == orig_addend
e717da7e 10971 && ent->owner == input_bfd
d881513a
AM		 10972 && ent->tls_type == tls_type)
10973 break;
10974 if (ent == NULL)
10975 abort ();
10976 offp = &ent->got.offset;
5bd4f169 10977 }
411e1bfb 10978
e717da7e
AM		 10979 got = ppc64_elf_tdata (input_bfd)->got;
10980 if (got == NULL)
10981 abort ();
10982
411e1bfb
AM		 10983 /* The offset must always be a multiple of 8. We use the
10984 least significant bit to record whether we have already
10985 processed this entry. */
d881513a 10986 off = *offp;
411e1bfb
AM		 10987 if ((off & 1) != 0)
10988 off &= ~1;
5bd4f169
AM		 10989 else
10990 {
411e1bfb
AM		 10991 /* Generate relocs for the dynamic linker, except in
10992 the case of TLSLD where we'll use one entry per
10993 module. */
e717da7e
AM		 10994 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10995
d881513a 10996 *offp = off | 1;
4e795f50
AM		 10997 if ((info->shared || indx != 0)
10998 && (h == NULL
039b3fef
AM		 10999 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11000 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 11001 {
e717da7e
AM		 11002 outrel.r_offset = (got->output_section->vma
11003 + got->output_offset
411e1bfb 11004 + off);
4cc603a5 11005 outrel.r_addend = addend;
d881513a 11006 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 11007 {
411e1bfb 11008 outrel.r_addend = 0;
e515b051 11009 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 11010 if (tls_type == (TLS_TLS | TLS_GD))
11011 {
e717da7e
AM		 11012 loc = relgot->contents;
11013 loc += (relgot->reloc_count++
d881513a
AM		 11014 * sizeof (Elf64_External_Rela));
11015 bfd_elf64_swap_reloca_out (output_bfd,
11016 &outrel, loc);
e515b051 11017 outrel.r_offset += 8;
4cc603a5 11018 outrel.r_addend = addend;
d881513a
AM		 11019 outrel.r_info
11020 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 11021 }
411e1bfb 11022 }
951fd09b 11023 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 11024 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 11025 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 11026 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
11027 else if (indx == 0)
81407a69
AM		 11028 {
11029 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
11030
11031 /* Write the .got section contents for the sake
11032 of prelink. */
e717da7e 11033 loc = got->contents + off;
23fbd6fa
JJ		 11034 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
11035 loc);
81407a69 11036 }
411e1bfb
AM		 11037 else
11038 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 11039
11040 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 11041 {
11042 outrel.r_addend += relocation;
11043 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 11044 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 11045 }
e717da7e
AM		 11046 loc = relgot->contents;
11047 loc += (relgot->reloc_count++
411e1bfb
AM		 11048 * sizeof (Elf64_External_Rela));
11049 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11050 }
11051
ad8e1ba5 11052 /* Init the .got section contents here if we're not
81407a69 11053 emitting a reloc. */
d881513a 11054 else
411e1bfb 11055 {
4cc603a5 11056 relocation += addend;
7b609f53
AM		 11057 if (tls_type == (TLS_TLS | TLS_LD))
11058 relocation = 1;
11059 else if (tls_type != 0)
411e1bfb 11060 {
e1918d23 11061 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 11062 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 11063 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 11064
7b609f53
AM		 11065 if (tls_type == (TLS_TLS | TLS_GD))
11066 {
11067 bfd_put_64 (output_bfd, relocation,
e717da7e 11068 got->contents + off + 8);
7b609f53
AM		 11069 relocation = 1;
11070 }
411e1bfb 11071 }
7b609f53 11072
411e1bfb 11073 bfd_put_64 (output_bfd, relocation,
e717da7e 11074 got->contents + off);
5bd4f169
AM		 11075 }
11076 }
11077
65f38f15
AM		 11078 if (off >= (bfd_vma) -2)
11079 abort ();
11080
e717da7e 11081 relocation = got->output_offset + off;
65f38f15 11082
5bd4f169 11083 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 11084 addend = -TOC_BASE_OFF;
5bd4f169 11085 }
65f38f15
AM		 11086 break;
11087
11088 case R_PPC64_PLT16_HA:
11089 case R_PPC64_PLT16_HI:
11090 case R_PPC64_PLT16_LO:
11091 case R_PPC64_PLT32:
11092 case R_PPC64_PLT64:
11093 /* Relocation is to the entry for this symbol in the
11094 procedure linkage table. */
11095
11096 /* Resolve a PLT reloc against a local symbol directly,
11097 without using the procedure linkage table. */
11098 if (h == NULL)
11099 break;
11100
411e1bfb
AM		 11101 /* It's possible that we didn't make a PLT entry for this
11102 symbol. This happens when statically linking PIC code,
11103 or when using -Bsymbolic. Go find a match if there is a
11104 PLT entry. */
4ce794b7 11105 if (htab->plt != NULL)
65f38f15 11106 {
411e1bfb 11107 struct plt_entry *ent;
039b3fef 11108 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 11109 if (ent->addend == orig_addend
411e1bfb
AM		 11110 && ent->plt.offset != (bfd_vma) -1)
11111 {
4ce794b7
AM		 11112 relocation = (htab->plt->output_section->vma
11113 + htab->plt->output_offset
411e1bfb
AM		 11114 + ent->plt.offset);
11115 unresolved_reloc = FALSE;
11116 }
65f38f15 11117 }
65f38f15 11118 break;
5bd4f169 11119
0b13192e
AM		 11120 case R_PPC64_TOC:
11121 /* Relocation value is TOC base. */
11122 relocation = TOCstart;
11123 if (r_symndx == 0)
11124 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 11125 else if (unresolved_reloc)
11126 ;
11127 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 11128 relocation += htab->stub_group[sec->id].toc_off;
11129 else
11130 unresolved_reloc = TRUE;
ab96bf03 11131 goto dodyn;
0b13192e 11132
5bd4f169
AM		 11133 /* TOC16 relocs. We want the offset relative to the TOC base,
11134 which is the address of the start of the TOC plus 0x8000.
11135 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11136 in this order. */
65f38f15
AM		 11137 case R_PPC64_TOC16:
11138 case R_PPC64_TOC16_LO:
11139 case R_PPC64_TOC16_HI:
11140 case R_PPC64_TOC16_DS:
11141 case R_PPC64_TOC16_LO_DS:
11142 case R_PPC64_TOC16_HA:
ad8e1ba5 11143 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 11144 break;
11145
11146 /* Relocate against the beginning of the section. */
65f38f15
AM		 11147 case R_PPC64_SECTOFF:
11148 case R_PPC64_SECTOFF_LO:
11149 case R_PPC64_SECTOFF_HI:
11150 case R_PPC64_SECTOFF_DS:
11151 case R_PPC64_SECTOFF_LO_DS:
11152 case R_PPC64_SECTOFF_HA:
4ce794b7 11153 if (sec != NULL)
65f38f15 11154 addend -= sec->output_section->vma;
5bd4f169
AM		 11155 break;
11156
721956f4
AM		 11157 case R_PPC64_REL14:
11158 case R_PPC64_REL14_BRNTAKEN:
11159 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 11160 case R_PPC64_REL24:
11161 break;
11162
411e1bfb
AM		 11163 case R_PPC64_TPREL16:
11164 case R_PPC64_TPREL16_LO:
11165 case R_PPC64_TPREL16_HI:
11166 case R_PPC64_TPREL16_HA:
11167 case R_PPC64_TPREL16_DS:
11168 case R_PPC64_TPREL16_LO_DS:
11169 case R_PPC64_TPREL16_HIGHER:
11170 case R_PPC64_TPREL16_HIGHERA:
11171 case R_PPC64_TPREL16_HIGHEST:
11172 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 11173 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 11174 if (info->shared)
11175 /* The TPREL16 relocs shouldn't really be used in shared
11176 libs as they will result in DT_TEXTREL being set, but
11177 support them anyway. */
11178 goto dodyn;
11179 break;
11180
11181 case R_PPC64_DTPREL16:
11182 case R_PPC64_DTPREL16_LO:
11183 case R_PPC64_DTPREL16_HI:
11184 case R_PPC64_DTPREL16_HA:
11185 case R_PPC64_DTPREL16_DS:
11186 case R_PPC64_DTPREL16_LO_DS:
11187 case R_PPC64_DTPREL16_HIGHER:
11188 case R_PPC64_DTPREL16_HIGHERA:
11189 case R_PPC64_DTPREL16_HIGHEST:
11190 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 11191 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 11192 break;
11193
e515b051
AM		 11194 case R_PPC64_DTPMOD64:
11195 relocation = 1;
11196 addend = 0;
11197 goto dodyn;
11198
411e1bfb 11199 case R_PPC64_TPREL64:
e1918d23 11200 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 11201 goto dodyn;
11202
11203 case R_PPC64_DTPREL64:
e1918d23 11204 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 11205 /* Fall thru */
11206
65f38f15
AM		 11207 /* Relocations that may need to be propagated if this is a
11208 dynamic object. */
04c9666a 11209 case R_PPC64_REL30:
65f38f15
AM		 11210 case R_PPC64_REL32:
11211 case R_PPC64_REL64:
11212 case R_PPC64_ADDR14:
11213 case R_PPC64_ADDR14_BRNTAKEN:
11214 case R_PPC64_ADDR14_BRTAKEN:
11215 case R_PPC64_ADDR16:
11216 case R_PPC64_ADDR16_DS:
11217 case R_PPC64_ADDR16_HA:
11218 case R_PPC64_ADDR16_HI:
11219 case R_PPC64_ADDR16_HIGHER:
11220 case R_PPC64_ADDR16_HIGHERA:
11221 case R_PPC64_ADDR16_HIGHEST:
11222 case R_PPC64_ADDR16_HIGHESTA:
11223 case R_PPC64_ADDR16_LO:
11224 case R_PPC64_ADDR16_LO_DS:
11225 case R_PPC64_ADDR24:
65f38f15
AM		 11226 case R_PPC64_ADDR32:
11227 case R_PPC64_ADDR64:
11228 case R_PPC64_UADDR16:
11229 case R_PPC64_UADDR32:
11230 case R_PPC64_UADDR64:
411e1bfb 11231 dodyn:
5d1634d7 11232 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 11233 break;
11234
41bd81ab
AM		 11235 if (NO_OPD_RELOCS && is_opd)
11236 break;
11237
65f38f15 11238 if ((info->shared
4e795f50 11239 && (h == NULL
039b3fef
AM		 11240 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11241 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 11242 && (must_be_dyn_reloc (info, r_type)
039b3fef 11243 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 11244 || (ELIMINATE_COPY_RELOCS
11245 && !info->shared
65f38f15 11246 && h != NULL
039b3fef 11247 && h->elf.dynindx != -1
f5385ebf
AM		 11248 && !h->elf.non_got_ref
11249 && h->elf.def_dynamic
11250 && !h->elf.def_regular))
65f38f15
AM		 11251 {
11252 Elf_Internal_Rela outrel;
b34976b6 11253 bfd_boolean skip, relocate;
65f38f15 11254 asection *sreloc;
947216bf 11255 bfd_byte *loc;
1cf1f670 11256 bfd_vma out_off;
65f38f15
AM		 11257
11258 /* When generating a dynamic object, these relocations
11259 are copied into the output file to be resolved at run
11260 time. */
11261
b34976b6
AM		 11262 skip = FALSE;
11263 relocate = FALSE;
65f38f15 11264
1cf1f670
AM		 11265 out_off = _bfd_elf_section_offset (output_bfd, info,
11266 input_section, rel->r_offset);
11267 if (out_off == (bfd_vma) -1)
b34976b6 11268 skip = TRUE;
1cf1f670 11269 else if (out_off == (bfd_vma) -2)
b34976b6 11270 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 11271 out_off += (input_section->output_section->vma
11272 + input_section->output_offset);
11273 outrel.r_offset = out_off;
411e1bfb 11274 outrel.r_addend = rel->r_addend;
65f38f15 11275
1cf1f670
AM		 11276 /* Optimize unaligned reloc use. */
11277 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
11278 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
11279 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
11280 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
11281 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
11282 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
11283 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
11284 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
11285 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
11286
65f38f15 11287 if (skip)
0bb2d96a 11288 memset (&outrel, 0, sizeof outrel);
039b3fef 11289 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 11290 && !is_opd
11291 && r_type != R_PPC64_TOC)
039b3fef 11292 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 11293 else
11294 {
41bd81ab
AM		 11295 /* This symbol is local, or marked to become local,
11296 or this is an opd section reloc which must point
11297 at a local function. */
65f38f15 11298 outrel.r_addend += relocation;
e86ce104 11299 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 11300 {
3fad3c7c 11301 if (is_opd && h != NULL)
afbe61cf
AM		 11302 {
11303 /* Lie about opd entries. This case occurs
11304 when building shared libraries and we
11305 reference a function in another shared
3fad3c7c
AM		 11306 lib. The same thing happens for a weak
11307 definition in an application that's
11308 overridden by a strong definition in a
11309 shared lib. (I believe this is a generic
11310 bug in binutils handling of weak syms.)
11311 In these cases we won't use the opd
1e2f5b6e 11312 entry in this lib. */
b34976b6 11313 unresolved_reloc = FALSE;
afbe61cf 11314 }
65f38f15 11315 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 11316
11317 /* We need to relocate .opd contents for ld.so.
11318 Prelink also wants simple and consistent rules
11319 for relocs. This make all RELATIVE relocs have
11320 *r_offset equal to r_addend. */
11321 relocate = TRUE;
65f38f15
AM		 11322 }
11323 else
11324 {
11325 long indx = 0;
11326
1d483afe 11327 if (r_symndx == 0 || bfd_is_abs_section (sec))
65f38f15
AM		 11328 ;
11329 else if (sec == NULL || sec->owner == NULL)
11330 {
11331 bfd_set_error (bfd_error_bad_value);
b34976b6 11332 return FALSE;
65f38f15
AM		 11333 }
11334 else
11335 {
11336 asection *osec;
11337
11338 osec = sec->output_section;
11339 indx = elf_section_data (osec)->dynindx;
11340
74541ad4
AM		 11341 if (indx == 0)
11342 {
11343 if ((osec->flags & SEC_READONLY) == 0
11344 && htab->elf.data_index_section != NULL)
11345 osec = htab->elf.data_index_section;
11346 else
11347 osec = htab->elf.text_index_section;
11348 indx = elf_section_data (osec)->dynindx;
11349 }
11350 BFD_ASSERT (indx != 0);
11351
65f38f15
AM		 11352 /* We are turning this relocation into one
11353 against a section symbol, so subtract out
11354 the output section's address but not the
11355 offset of the input section in the output
11356 section. */
11357 outrel.r_addend -= osec->vma;
11358 }
11359
11360 outrel.r_info = ELF64_R_INFO (indx, r_type);
11361 }
11362 }
11363
11364 sreloc = elf_section_data (input_section)->sreloc;
11365 if (sreloc == NULL)
11366 abort ();
11367
dfbb6ac9
AM		 11368 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11369 >= sreloc->size)
11370 abort ();
947216bf
AM		 11371 loc = sreloc->contents;
11372 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 11373 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11374
11375 /* If this reloc is against an external symbol, it will
11376 be computed at runtime, so there's no need to do
81407a69
AM		 11377 anything now. However, for the sake of prelink ensure
11378 that the section contents are a known value. */
65f38f15 11379 if (! relocate)
81407a69
AM		 11380 {
11381 unresolved_reloc = FALSE;
11382 /* The value chosen here is quite arbitrary as ld.so
11383 ignores section contents except for the special
11384 case of .opd where the contents might be accessed
11385 before relocation. Choose zero, as that won't
11386 cause reloc overflow. */
11387 relocation = 0;
11388 addend = 0;
11389 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11390 to improve backward compatibility with older
11391 versions of ld. */
11392 if (r_type == R_PPC64_ADDR64)
11393 addend = outrel.r_addend;
11394 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11395 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 11396 addend = (input_section->output_section->vma
11397 + input_section->output_offset
11398 + rel->r_offset);
81407a69 11399 }
65f38f15 11400 }
5bd4f169
AM		 11401 break;
11402
65f38f15
AM		 11403 case R_PPC64_COPY:
11404 case R_PPC64_GLOB_DAT:
11405 case R_PPC64_JMP_SLOT:
11406 case R_PPC64_RELATIVE:
11407 /* We shouldn't ever see these dynamic relocs in relocatable
11408 files. */
ae9a127f 11409 /* Fall through. */
65f38f15
AM		 11410
11411 case R_PPC64_PLTGOT16:
11412 case R_PPC64_PLTGOT16_DS:
11413 case R_PPC64_PLTGOT16_HA:
11414 case R_PPC64_PLTGOT16_HI:
11415 case R_PPC64_PLTGOT16_LO:
11416 case R_PPC64_PLTGOT16_LO_DS:
11417 case R_PPC64_PLTREL32:
11418 case R_PPC64_PLTREL64:
11419 /* These ones haven't been implemented yet. */
11420
11421 (*_bfd_error_handler)
d003868e
AM		 11422 (_("%B: relocation %s is not supported for symbol %s."),
11423 input_bfd,
4ce794b7 11424 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 11425
11426 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11427 ret = FALSE;
5bd4f169 11428 continue;
65f38f15 11429 }
5bd4f169 11430
65f38f15
AM		 11431 /* Do any further special processing. */
11432 switch (r_type)
11433 {
11434 default:
11435 break;
11436
11437 case R_PPC64_ADDR16_HA:
11438 case R_PPC64_ADDR16_HIGHERA:
11439 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 11440 case R_PPC64_TOC16_HA:
11441 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 11442 case R_PPC64_TPREL16_HA:
11443 case R_PPC64_DTPREL16_HA:
411e1bfb
AM		 11444 case R_PPC64_TPREL16_HIGHER:
11445 case R_PPC64_TPREL16_HIGHERA:
11446 case R_PPC64_TPREL16_HIGHEST:
11447 case R_PPC64_TPREL16_HIGHESTA:
11448 case R_PPC64_DTPREL16_HIGHER:
11449 case R_PPC64_DTPREL16_HIGHERA:
11450 case R_PPC64_DTPREL16_HIGHEST:
11451 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 11452 /* It's just possible that this symbol is a weak symbol
11453 that's not actually defined anywhere. In that case,
11454 'sec' would be NULL, and we should leave the symbol
11455 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 11456 if (sec == NULL)
11457 break;
11458 /* Fall thru */
11459
11460 case R_PPC64_GOT16_HA:
11461 case R_PPC64_PLTGOT16_HA:
11462 case R_PPC64_PLT16_HA:
11463 case R_PPC64_GOT_TLSGD16_HA:
11464 case R_PPC64_GOT_TLSLD16_HA:
11465 case R_PPC64_GOT_TPREL16_HA:
11466 case R_PPC64_GOT_DTPREL16_HA:
11467 /* Add 0x10000 if sign bit in 0:15 is set.
11468 Bits 0:15 are not used. */
11469 addend += 0x8000;
65f38f15
AM		 11470 break;
11471
11472 case R_PPC64_ADDR16_DS:
11473 case R_PPC64_ADDR16_LO_DS:
11474 case R_PPC64_GOT16_DS:
11475 case R_PPC64_GOT16_LO_DS:
11476 case R_PPC64_PLT16_LO_DS:
11477 case R_PPC64_SECTOFF_DS:
11478 case R_PPC64_SECTOFF_LO_DS:
11479 case R_PPC64_TOC16_DS:
11480 case R_PPC64_TOC16_LO_DS:
11481 case R_PPC64_PLTGOT16_DS:
11482 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 11483 case R_PPC64_GOT_TPREL16_DS:
11484 case R_PPC64_GOT_TPREL16_LO_DS:
11485 case R_PPC64_GOT_DTPREL16_DS:
11486 case R_PPC64_GOT_DTPREL16_LO_DS:
11487 case R_PPC64_TPREL16_DS:
11488 case R_PPC64_TPREL16_LO_DS:
11489 case R_PPC64_DTPREL16_DS:
11490 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 11491 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11492 mask = 3;
11493 /* If this reloc is against an lq insn, then the value must be
11494 a multiple of 16. This is somewhat of a hack, but the
11495 "correct" way to do this by defining _DQ forms of all the
11496 _DS relocs bloats all reloc switches in this file. It
11497 doesn't seem to make much sense to use any of these relocs
11498 in data, so testing the insn should be safe. */
494dac0c 11499 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 11500 mask = 15;
11501 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 11502 {
11503 (*_bfd_error_handler)
d003868e
AM		 11504 (_("%B: error: relocation %s not a multiple of %d"),
11505 input_bfd,
4ce794b7 11506 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11507 mask + 1);
65f38f15 11508 bfd_set_error (bfd_error_bad_value);
b34976b6 11509 ret = FALSE;
65f38f15
AM		 11510 continue;
11511 }
11512 break;
5bd4f169
AM		 11513 }
11514
239e1f3a
AM		 11515 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11516 because such sections are not SEC_ALLOC and thus ld.so will
11517 not process them. */
65f38f15 11518 if (unresolved_reloc
239e1f3a 11519 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11520 && h->elf.def_dynamic))
9c07fe7c
AM		 11521 {
11522 (*_bfd_error_handler)
d003868e
AM		 11523 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11524 input_bfd,
11525 input_section,
9c07fe7c 11526 (long) rel->r_offset,
7b609f53 11527 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11528 h->elf.root.root.string);
b34976b6 11529 ret = FALSE;
9c07fe7c 11530 }
5bd4f169 11531
65f38f15 11532 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 11533 input_bfd,
11534 input_section,
11535 contents,
411e1bfb 11536 rel->r_offset,
5bd4f169
AM		 11537 relocation,
11538 addend);
11539
ef60b7ff 11540 if (r != bfd_reloc_ok)
5bd4f169 11541 {
cd27b276
AM		 11542 if (sym_name == NULL)
11543 sym_name = "(null)";
11544 if (r == bfd_reloc_overflow)
5bd4f169 11545 {
cd27b276
AM		 11546 if (warned)
11547 continue;
11548 if (h != NULL
039b3fef 11549 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11550 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 11551 {
11552 /* Assume this is a call protected by other code that
11553 detects the symbol is undefined. If this is the case,
11554 we can safely ignore the overflow. If not, the
11555 program is hosed anyway, and a little warning isn't
11556 going to help. */
11557
11558 continue;
11559 }
11560
ef60b7ff 11561 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 11562 (info, (h ? &h->elf.root : NULL), sym_name,
11563 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11564 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11565 return FALSE;
ef60b7ff
AM		 11566 }
11567 else
11568 {
11569 (*_bfd_error_handler)
d003868e
AM		 11570 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11571 input_bfd,
11572 input_section,
7b609f53 11573 (long) rel->r_offset,
4ce794b7 11574 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 11575 sym_name,
11576 (int) r);
b34976b6 11577 ret = FALSE;
ef60b7ff 11578 }
5bd4f169 11579 }
5bd4f169
AM		 11580 }
11581
645ea6a9
AM		 11582 /* If we're emitting relocations, then shortly after this function
11583 returns, reloc offsets and addends for this section will be
11584 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 11585 file rather than the input. Save a copy of the relocs for
11586 opd_entry_value. */
4cc603a5 11587 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 11588 {
11589 bfd_size_type amt;
11590 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11591 rel = bfd_alloc (input_bfd, amt);
11592 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11593 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11594 if (rel == NULL)
11595 return FALSE;
11596 memcpy (rel, relocs, amt);
11597 }
5bd4f169
AM		 11598 return ret;
11599}
11600
754021d0
AM		 11601/* Adjust the value of any local symbols in opd sections. */
11602
11603static bfd_boolean
11604ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11605 const char *name ATTRIBUTE_UNUSED,
11606 Elf_Internal_Sym *elfsym,
11607 asection *input_sec,
11608 struct elf_link_hash_entry *h)
11609{
74f0fb50
AM		 11610 struct _opd_sec_data *opd;
11611 long adjust;
754021d0
AM		 11612 bfd_vma value;
11613
4025353c
AM		 11614 if (h != NULL)
11615 return TRUE;
11616
74f0fb50
AM		 11617 opd = get_opd_info (input_sec);
11618 if (opd == NULL || opd->adjust == NULL)
754021d0
AM		 11619 return TRUE;
11620
11621 value = elfsym->st_value - input_sec->output_offset;
11622 if (!info->relocatable)
11623 value -= input_sec->output_section->vma;
11624
74f0fb50 11625 adjust = opd->adjust[value / 8];
4025353c
AM		 11626 if (adjust == -1)
11627 elfsym->st_value = 0;
11628 else
11629 elfsym->st_value += adjust;
754021d0
AM		 11630 return TRUE;
11631}
11632
5bd4f169
AM		 11633/* Finish up dynamic symbol handling. We set the contents of various
11634 dynamic sections here. */
11635
b34976b6 11636static bfd_boolean
4ce794b7
AM		 11637ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11638 struct bfd_link_info *info,
11639 struct elf_link_hash_entry *h,
11640 Elf_Internal_Sym *sym)
5bd4f169 11641{
65f38f15 11642 struct ppc_link_hash_table *htab;
8387904d
AM		 11643 struct plt_entry *ent;
11644 Elf_Internal_Rela rela;
11645 bfd_byte *loc;
5bd4f169 11646
65f38f15 11647 htab = ppc_hash_table (info);
5bd4f169 11648
8387904d
AM		 11649 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11650 if (ent->plt.offset != (bfd_vma) -1)
11651 {
11652 /* This symbol has an entry in the procedure linkage
11653 table. Set it up. */
11654
11655 if (htab->plt == NULL
11656 || htab->relplt == NULL
11657 || htab->glink == NULL)
11658 abort ();
11659
11660 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11661 fill in the PLT entry. */
11662 rela.r_offset = (htab->plt->output_section->vma
11663 + htab->plt->output_offset
11664 + ent->plt.offset);
11665 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11666 rela.r_addend = ent->addend;
11667
11668 loc = htab->relplt->contents;
11669 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11670 * sizeof (Elf64_External_Rela));
11671 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11672 }
5bd4f169 11673
f5385ebf 11674 if (h->needs_copy)
5bd4f169 11675 {
5bd4f169 11676 Elf_Internal_Rela rela;
947216bf 11677 bfd_byte *loc;
5bd4f169 11678
65f38f15 11679 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11680
65f38f15
AM		 11681 if (h->dynindx == -1
11682 || (h->root.type != bfd_link_hash_defined
11683 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11684 || htab->relbss == NULL)
65f38f15 11685 abort ();
5bd4f169
AM		 11686
11687 rela.r_offset = (h->root.u.def.value
11688 + h->root.u.def.section->output_section->vma
11689 + h->root.u.def.section->output_offset);
11690 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11691 rela.r_addend = 0;
4ce794b7
AM		 11692 loc = htab->relbss->contents;
11693 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11694 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 11695 }
11696
5bd4f169
AM		 11697 /* Mark some specially defined symbols as absolute. */
11698 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11699 sym->st_shndx = SHN_ABS;
11700
b34976b6 11701 return TRUE;
5bd4f169
AM		 11702}
11703
65f38f15
AM		 11704/* Used to decide how to sort relocs in an optimal manner for the
11705 dynamic linker, before writing them out. */
11706
11707static enum elf_reloc_type_class
4ce794b7 11708ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11709{
04c9666a 11710 enum elf_ppc64_reloc_type r_type;
a33d1f77 11711
4ce794b7 11712 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11713 switch (r_type)
65f38f15
AM		 11714 {
11715 case R_PPC64_RELATIVE:
11716 return reloc_class_relative;
11717 case R_PPC64_JMP_SLOT:
11718 return reloc_class_plt;
11719 case R_PPC64_COPY:
11720 return reloc_class_copy;
11721 default:
11722 return reloc_class_normal;
11723 }
11724}
11725
5bd4f169
AM		 11726/* Finish up the dynamic sections. */
11727
b34976b6 11728static bfd_boolean
4ce794b7
AM		 11729ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11730 struct bfd_link_info *info)
5bd4f169 11731{
65f38f15
AM		 11732 struct ppc_link_hash_table *htab;
11733 bfd *dynobj;
5bd4f169 11734 asection *sdyn;
5bd4f169 11735
65f38f15
AM		 11736 htab = ppc_hash_table (info);
11737 dynobj = htab->elf.dynobj;
5bd4f169
AM		 11738 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11739
65f38f15 11740 if (htab->elf.dynamic_sections_created)
5bd4f169 11741 {
5bd4f169
AM		 11742 Elf64_External_Dyn *dyncon, *dynconend;
11743
4ce794b7 11744 if (sdyn == NULL || htab->got == NULL)
65f38f15 11745 abort ();
5bd4f169
AM		 11746
11747 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11748 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11749 for (; dyncon < dynconend; dyncon++)
11750 {
11751 Elf_Internal_Dyn dyn;
19397422 11752 asection *s;
5bd4f169
AM		 11753
11754 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11755
11756 switch (dyn.d_tag)
11757 {
65f38f15
AM		 11758 default:
11759 continue;
5bd4f169 11760
5d1634d7 11761 case DT_PPC64_GLINK:
4ce794b7 11762 s = htab->glink;
6348e046 11763 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11764 /* We stupidly defined DT_PPC64_GLINK to be the start
11765 of glink rather than the first entry point, which is
11766 what ld.so needs, and now have a bigger stub to
11767 support automatic multiple TOCs. */
11768 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11769 break;
11770
19397422
AM		 11771 case DT_PPC64_OPD:
11772 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11773 if (s == NULL)
11774 continue;
11775 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11776 break;
11777
11778 case DT_PPC64_OPDSZ:
11779 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11780 if (s == NULL)
11781 continue;
eea6121a 11782 dyn.d_un.d_val = s->size;
19397422
AM		 11783 break;
11784
65f38f15 11785 case DT_PLTGOT:
4ce794b7 11786 s = htab->plt;
6348e046 11787 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11788 break;
11789
11790 case DT_JMPREL:
4ce794b7 11791 s = htab->relplt;
6348e046 11792 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11793 break;
5bd4f169 11794
65f38f15 11795 case DT_PLTRELSZ:
eea6121a 11796 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11797 break;
11798
11799 case DT_RELASZ:
11800 /* Don't count procedure linkage table relocs in the
11801 overall reloc count. */
4ce794b7 11802 s = htab->relplt;
6348e046
AM		 11803 if (s == NULL)
11804 continue;
eea6121a 11805 dyn.d_un.d_val -= s->size;
6348e046
AM		 11806 break;
11807
11808 case DT_RELA:
11809 /* We may not be using the standard ELF linker script.
11810 If .rela.plt is the first .rela section, we adjust
11811 DT_RELA to not include it. */
4ce794b7 11812 s = htab->relplt;
6348e046
AM		 11813 if (s == NULL)
11814 continue;
11815 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11816 continue;
eea6121a 11817 dyn.d_un.d_ptr += s->size;
65f38f15 11818 break;
5bd4f169 11819 }
5bd4f169 11820
65f38f15 11821 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11822 }
5bd4f169
AM		 11823 }
11824
eea6121a 11825 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11826 {
11827 /* Fill in the first entry in the global offset table.
11828 We use it to hold the link-time TOCbase. */
11829 bfd_put_64 (output_bfd,
60ee0d4a 11830 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11831 htab->got->contents);
5d1634d7
AM		 11832
11833 /* Set .got entry size. */
4ce794b7 11834 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11835 }
11836
eea6121a 11837 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11838 {
11839 /* Set .plt entry size. */
4ce794b7 11840 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11841 = PLT_ENTRY_SIZE;
11842 }
11843
84f5d08e
AM		 11844 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11845 brlt ourselves if emitrelocations. */
11846 if (htab->brlt != NULL
11847 && htab->brlt->reloc_count != 0
11848 && !_bfd_elf_link_output_relocs (output_bfd,
11849 htab->brlt,
11850 &elf_section_data (htab->brlt)->rel_hdr,
11851 elf_section_data (htab->brlt)->relocs,
11852 NULL))
11853 return FALSE;
11854
176a0d42
AM		 11855 if (htab->glink != NULL
11856 && htab->glink->reloc_count != 0
11857 && !_bfd_elf_link_output_relocs (output_bfd,
11858 htab->glink,
11859 &elf_section_data (htab->glink)->rel_hdr,
11860 elf_section_data (htab->glink)->relocs,
11861 NULL))
11862 return FALSE;
11863
e717da7e 11864 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11865 since we didn't add them to DYNOBJ. We know dynobj is the first
11866 bfd. */
e717da7e
AM		 11867 while ((dynobj = dynobj->link_next) != NULL)
11868 {
11869 asection *s;
7b53ace3 11870
0c8d6e5c 11871 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 11872 continue;
11873
e717da7e
AM		 11874 s = ppc64_elf_tdata (dynobj)->got;
11875 if (s != NULL
eea6121a 11876 && s->size != 0
e717da7e
AM		 11877 && s->output_section != bfd_abs_section_ptr
11878 && !bfd_set_section_contents (output_bfd, s->output_section,
11879 s->contents, s->output_offset,
eea6121a 11880 s->size))
e717da7e
AM		 11881 return FALSE;
11882 s = ppc64_elf_tdata (dynobj)->relgot;
11883 if (s != NULL
eea6121a 11884 && s->size != 0
e717da7e
AM		 11885 && s->output_section != bfd_abs_section_ptr
11886 && !bfd_set_section_contents (output_bfd, s->output_section,
11887 s->contents, s->output_offset,
eea6121a 11888 s->size))
e717da7e
AM		 11889 return FALSE;
11890 }
f6c52c13 11891
b34976b6 11892 return TRUE;
5bd4f169
AM		 11893}
11894
5bd4f169 11895#include "elf64-target.h"
GDB Binutils - Deliverables
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