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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
7d9616d7 95#define elf_backend_check_directives ppc64_elf_process_dot_syms
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];
6ba2a415 2957 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 2958 s->section = sym->section;
2959 s->value = sym->value + r->addend;
2960 s->name = names;
2961 *names++ = '.';
2962 len = strlen (syms[i]->name);
2963 memcpy (names, syms[i]->name, len + 1);
2964 names += len + 1;
6f610d07
UW		 2965 /* Have udata.p point back to the original symbol this
2966 synthetic symbol was derived from. */
2967 s->udata.p = syms[i];
699733f6
AM		 2968 s++;
2969 }
2970 }
2971 }
2972 else
90e3cdf2 2973 {
468392fb 2974 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
699733f6
AM		 2975 bfd_byte *contents;
2976 size_t size;
468392fb
AM		 2977 long plt_count = 0;
2978 bfd_vma glink_vma = 0, resolv_vma = 0;
2979 asection *dynamic, *glink = NULL, *relplt = NULL;
2980 arelent *p;
90e3cdf2 2981
699733f6
AM		 2982 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
2983 {
2984 if (contents)
c9727e01
AM		 2985 {
2986 free_contents_and_exit:
2987 free (contents);
2988 }
7356fed5 2989 count = -1;
c9727e01 2990 goto done;
699733f6 2991 }
90e3cdf2 2992
699733f6
AM		 2993 size = 0;
2994 for (i = secsymend; i < opdsymend; ++i)
2995 {
2996 bfd_vma ent;
90e3cdf2 2997
699733f6
AM		 2998 ent = bfd_get_64 (abfd, contents + syms[i]->value);
2999 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3000 {
3001 ++count;
3002 size += sizeof (asymbol);
3003 size += strlen (syms[i]->name) + 2;
3004 }
3005 }
90e3cdf2 3006
468392fb 3007 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3008 if (dyn_count != 0
3009 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3010 {
3011 bfd_byte *dynbuf, *extdyn, *extdynend;
3012 size_t extdynsize;
3013 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3014
3015 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3016 goto free_contents_and_exit;
3017
3018 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3019 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3020
3021 extdyn = dynbuf;
3022 extdynend = extdyn + dynamic->size;
3023 for (; extdyn < extdynend; extdyn += extdynsize)
3024 {
3025 Elf_Internal_Dyn dyn;
3026 (*swap_dyn_in) (abfd, extdyn, &dyn);
3027
3028 if (dyn.d_tag == DT_NULL)
3029 break;
3030
3031 if (dyn.d_tag == DT_PPC64_GLINK)
3032 {
3033 /* The first glink stub starts at offset 32; see comment in
3034 ppc64_elf_finish_dynamic_sections. */
3035 glink_vma = dyn.d_un.d_val + 32;
3036 /* The .glink section usually does not survive the final
3037 link; search for the section (usually .text) where the
3038 glink stubs now reside. */
3039 glink = bfd_sections_find_if (abfd, section_covers_vma,
3040 &glink_vma);
3041 break;
3042 }
3043 }
3044
3045 free (dynbuf);
3046 }
3047
3048 if (glink != NULL)
3049 {
3050 /* Determine __glink trampoline by reading the relative branch
3051 from the first glink stub. */
3052 bfd_byte buf[4];
3053 if (bfd_get_section_contents (abfd, glink, buf,
3054 glink_vma + 4 - glink->vma, 4))
3055 {
3056 unsigned int insn = bfd_get_32 (abfd, buf);
3057 insn ^= B_DOT;
3058 if ((insn & ~0x3fffffc) == 0)
3059 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3060 }
3061
3062 if (resolv_vma)
3063 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3064
066ee829
AM		 3065 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3066 if (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;
468392fb 3071
066ee829
AM		 3072 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3073 size += plt_count * sizeof (asymbol);
468392fb 3074
066ee829
AM		 3075 p = relplt->relocation;
3076 for (i = 0; i < plt_count; i++, p++)
3077 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3078 }
468392fb
AM		 3079 }
3080
699733f6
AM		 3081 s = *ret = bfd_malloc (size);
3082 if (s == NULL)
7356fed5 3083 goto free_contents_and_exit;
90e3cdf2 3084
468392fb 3085 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3086
699733f6 3087 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3088 {
699733f6 3089 bfd_vma ent;
90e3cdf2 3090
699733f6
AM		 3091 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3092 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3093 {
c9727e01 3094 long lo, hi;
699733f6 3095 size_t len;
c9727e01 3096 asection *sec = abfd->sections;
90e3cdf2 3097
699733f6
AM		 3098 *s = *syms[i];
3099 lo = codesecsym;
3100 hi = codesecsymend;
3101 while (lo < hi)
3102 {
c9727e01 3103 long mid = (lo + hi) >> 1;
699733f6
AM		 3104 if (syms[mid]->section->vma < ent)
3105 lo = mid + 1;
3106 else if (syms[mid]->section->vma > ent)
3107 hi = mid;
3108 else
c9727e01
AM		 3109 {
3110 sec = syms[mid]->section;
3111 break;
3112 }
699733f6
AM		 3113 }
3114
c9727e01 3115 if (lo >= hi && lo > codesecsym)
699733f6 3116 sec = syms[lo - 1]->section;
699733f6
AM		 3117
3118 for (; sec != NULL; sec = sec->next)
3119 {
3120 if (sec->vma > ent)
3121 break;
3122 if ((sec->flags & SEC_ALLOC) == 0
3123 || (sec->flags & SEC_LOAD) == 0)
3124 break;
3125 if ((sec->flags & SEC_CODE) != 0)
3126 s->section = sec;
3127 }
6ba2a415 3128 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3129 s->value = ent - s->section->vma;
3130 s->name = names;
3131 *names++ = '.';
3132 len = strlen (syms[i]->name);
3133 memcpy (names, syms[i]->name, len + 1);
3134 names += len + 1;
6f610d07
UW		 3135 /* Have udata.p point back to the original symbol this
3136 synthetic symbol was derived from. */
3137 s->udata.p = syms[i];
699733f6 3138 s++;
90e3cdf2 3139 }
90e3cdf2 3140 }
699733f6 3141 free (contents);
468392fb
AM		 3142
3143 if (glink != NULL && relplt != NULL)
3144 {
3145 if (resolv_vma)
3146 {
3147 /* Add a symbol for the main glink trampoline. */
86a4952b 3148 memset (s, 0, sizeof *s);
468392fb 3149 s->the_bfd = abfd;
6ba2a415 3150 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3151 s->section = glink;
3152 s->value = resolv_vma - glink->vma;
3153 s->name = names;
3154 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3155 names += sizeof ("__glink_PLTresolve");
3156 s++;
3157 count++;
3158 }
3159
3160 /* FIXME: It would be very much nicer to put sym@plt on the
3161 stub rather than on the glink branch table entry. The
3162 objdump disassembler would then use a sensible symbol
3163 name on plt calls. The difficulty in doing so is
3164 a) finding the stubs, and,
3165 b) matching stubs against plt entries, and,
3166 c) there can be multiple stubs for a given plt entry.
3167
3168 Solving (a) could be done by code scanning, but older
3169 ppc64 binaries used different stubs to current code.
3170 (b) is the tricky one since you need to known the toc
3171 pointer for at least one function that uses a pic stub to
3172 be able to calculate the plt address referenced.
3173 (c) means gdb would need to set multiple breakpoints (or
3174 find the glink branch itself) when setting breakpoints
3175 for pending shared library loads. */
3176 p = relplt->relocation;
3177 for (i = 0; i < plt_count; i++, p++)
3178 {
3179 size_t len;
3180
3181 *s = **p->sym_ptr_ptr;
3182 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3183 we are defining a symbol, ensure one of them is set. */
3184 if ((s->flags & BSF_LOCAL) == 0)
3185 s->flags |= BSF_GLOBAL;
6ba2a415 3186 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3187 s->section = glink;
3188 s->value = glink_vma - glink->vma;
3189 s->name = names;
3190 s->udata.p = NULL;
3191 len = strlen ((*p->sym_ptr_ptr)->name);
3192 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3193 names += len;
3194 memcpy (names, "@plt", sizeof ("@plt"));
3195 names += sizeof ("@plt");
3196 s++;
3197 glink_vma += 8;
3198 if (i >= 0x8000)
3199 glink_vma += 4;
3200 }
3201 count += plt_count;
3202 }
90e3cdf2
JJ		 3203 }
3204
c9727e01 3205 done:
a7535cf3 3206 free (syms);
90e3cdf2
JJ		 3207 return count;
3208}
5bd4f169 3209\f
65f38f15
AM		 3210/* The following functions are specific to the ELF linker, while
3211 functions above are used generally. Those named ppc64_elf_* are
3212 called by the main ELF linker code. They appear in this file more
3213 or less in the order in which they are called. eg.
3214 ppc64_elf_check_relocs is called early in the link process,
3215 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3216 called.
3217
3218 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3219 functions have both a function code symbol and a function descriptor
3220 symbol. A call to foo in a relocatable object file looks like:
3221
3222 . .text
3223 . x:
3224 . bl .foo
3225 . nop
3226
3227 The function definition in another object file might be:
3228
3229 . .section .opd
3230 . foo: .quad .foo
3231 . .quad .TOC.@tocbase
3232 . .quad 0
3233 .
3234 . .text
3235 . .foo: blr
3236
3237 When the linker resolves the call during a static link, the branch
3238 unsurprisingly just goes to .foo and the .opd information is unused.
3239 If the function definition is in a shared library, things are a little
3240 different: The call goes via a plt call stub, the opd information gets
3241 copied to the plt, and the linker patches the nop.
3242
3243 . x:
3244 . bl .foo_stub
3245 . ld 2,40(1)
3246 .
3247 .
3248 . .foo_stub:
3249 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3250 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM		 3251 . std 2,40(1) # this is the general idea
3252 . ld 11,0(12)
3253 . ld 2,8(12)
3254 . mtctr 11
3255 . ld 11,16(12)
3256 . bctr
3257 .
3258 . .section .plt
3259 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3260
3261 The "reloc ()" notation is supposed to indicate that the linker emits
3262 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3263 copying.
3264
3265 What are the difficulties here? Well, firstly, the relocations
3266 examined by the linker in check_relocs are against the function code
3267 sym .foo, while the dynamic relocation in the plt is emitted against
3268 the function descriptor symbol, foo. Somewhere along the line, we need
3269 to carefully copy dynamic link information from one symbol to the other.
3270 Secondly, the generic part of the elf linker will make .foo a dynamic
3271 symbol as is normal for most other backends. We need foo dynamic
3272 instead, at least for an application final link. However, when
3273 creating a shared library containing foo, we need to have both symbols
3274 dynamic so that references to .foo are satisfied during the early
3275 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3276 definition from some other object, eg. a static library.
3277
3278 Update: As of August 2004, we support a new convention. Function
3279 calls may use the function descriptor symbol, ie. "bl foo". This
3280 behaves exactly as "bl .foo". */
65f38f15
AM		 3281
3282/* The linker needs to keep track of the number of relocs that it
3283 decides to copy as dynamic relocs in check_relocs for each symbol.
3284 This is so that it can later discard them if they are found to be
3285 unnecessary. We store the information in a field extending the
3286 regular ELF linker hash table. */
3287
3288struct ppc_dyn_relocs
3289{
3290 struct ppc_dyn_relocs *next;
3291
3292 /* The input section of the reloc. */
3293 asection *sec;
3294
3295 /* Total number of relocs copied for the input section. */
3296 bfd_size_type count;
3297
3298 /* Number of pc-relative relocs copied for the input section. */
3299 bfd_size_type pc_count;
3300};
3301
411e1bfb
AM		 3302/* Track GOT entries needed for a given symbol. We might need more
3303 than one got entry per symbol. */
3304struct got_entry
3305{
3306 struct got_entry *next;
3307
e7b938ca 3308 /* The symbol addend that we'll be placing in the GOT. */
411e1bfb
AM		 3309 bfd_vma addend;
3310
e717da7e
AM		 3311 /* Unlike other ELF targets, we use separate GOT entries for the same
3312 symbol referenced from different input files. This is to support
3313 automatic multiple TOC/GOT sections, where the TOC base can vary
102890f0
AM		 3314 from one input file to another. FIXME: After group_sections we
3315 ought to merge entries within the group.
e717da7e
AM		 3316
3317 Point to the BFD owning this GOT entry. */
3318 bfd *owner;
3319
3320 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3321 TLS_TPREL or TLS_DTPREL for tls entries. */
3322 char tls_type;
3323
e7b938ca 3324 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
411e1bfb
AM		 3325 union
3326 {
3327 bfd_signed_vma refcount;
3328 bfd_vma offset;
3329 } got;
411e1bfb
AM		 3330};
3331
3332/* The same for PLT. */
3333struct plt_entry
3334{
3335 struct plt_entry *next;
3336
3337 bfd_vma addend;
3338
3339 union
3340 {
3341 bfd_signed_vma refcount;
3342 bfd_vma offset;
3343 } plt;
3344};
3345
1d483afe 3346/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3347 selects those that must be copied when linking a shared library,
3348 even when the symbol is local. */
65f38f15 3349
1d483afe
AM		 3350static int
3351must_be_dyn_reloc (struct bfd_link_info *info,
3352 enum elf_ppc64_reloc_type r_type)
3353{
3354 switch (r_type)
3355 {
3356 default:
3357 return 1;
3358
3359 case R_PPC64_REL32:
3360 case R_PPC64_REL64:
3361 case R_PPC64_REL30:
3362 return 0;
3363
3364 case R_PPC64_TPREL16:
3365 case R_PPC64_TPREL16_LO:
3366 case R_PPC64_TPREL16_HI:
3367 case R_PPC64_TPREL16_HA:
3368 case R_PPC64_TPREL16_DS:
3369 case R_PPC64_TPREL16_LO_DS:
3370 case R_PPC64_TPREL16_HIGHER:
3371 case R_PPC64_TPREL16_HIGHERA:
3372 case R_PPC64_TPREL16_HIGHEST:
3373 case R_PPC64_TPREL16_HIGHESTA:
3374 case R_PPC64_TPREL64:
3375 return !info->executable;
3376 }
3377}
65f38f15 3378
f4656909
AM		 3379/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3380 copying dynamic variables from a shared lib into an app's dynbss
3381 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3382 shared lib. With code that gcc generates, it's vital that this be
3383 enabled; In the PowerPC64 ABI, the address of a function is actually
3384 the address of a function descriptor, which resides in the .opd
3385 section. gcc uses the descriptor directly rather than going via the
3386 GOT as some other ABI's do, which means that initialized function
3387 pointers must reference the descriptor. Thus, a function pointer
3388 initialized to the address of a function in a shared library will
3389 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3390 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3391 presents a problem as a plt entry for that function is also
3392 initialized from the function descriptor symbol and the copy reloc
3393 may not be initialized first. */
a23b6845 3394#define ELIMINATE_COPY_RELOCS 1
f4656909 3395
721956f4
AM		 3396/* Section name for stubs is the associated section name plus this
3397 string. */
3398#define STUB_SUFFIX ".stub"
3399
3400/* Linker stubs.
3401 ppc_stub_long_branch:
3402 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3403 destination, but a 24 bit branch in a stub section will reach.
3404 . b dest
3405
3406 ppc_stub_plt_branch:
3407 Similar to the above, but a 24 bit branch in the stub section won't
3408 reach its destination.
87e226ce
AM		 3409 . addis %r12,%r2,xxx@toc@ha
3410 . ld %r11,xxx@toc@l(%r12)
721956f4
AM		 3411 . mtctr %r11
3412 . bctr
3413
3414 ppc_stub_plt_call:
2c66dc6c
AM		 3415 Used to call a function in a shared library. If it so happens that
3416 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3417 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3418 . addis %r12,%r2,xxx@toc@ha
721956f4 3419 . std %r2,40(%r1)
87e226ce 3420 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3421 . mtctr %r11
ac2df442 3422 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3423 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3424 . bctr
ad8e1ba5
AM		 3425
3426 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3427 code to adjust the value and save r2 to support multiple toc sections.
3428 A ppc_stub_long_branch with an r2 offset looks like:
3429 . std %r2,40(%r1)
3430 . addis %r2,%r2,off@ha
3431 . addi %r2,%r2,off@l
3432 . b dest
3433
3434 A ppc_stub_plt_branch with an r2 offset looks like:
3435 . std %r2,40(%r1)
3436 . addis %r12,%r2,xxx@toc@ha
3437 . ld %r11,xxx@toc@l(%r12)
3438 . addis %r2,%r2,off@ha
3439 . addi %r2,%r2,off@l
3440 . mtctr %r11
3441 . bctr
ac2df442
AM		 3442
3443 In cases where the "addis" instruction would add zero, the "addis" is
3444 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3445*/
3446
3447enum ppc_stub_type {
3448 ppc_stub_none,
3449 ppc_stub_long_branch,
ad8e1ba5 3450 ppc_stub_long_branch_r2off,
721956f4 3451 ppc_stub_plt_branch,
ad8e1ba5 3452 ppc_stub_plt_branch_r2off,
721956f4
AM		 3453 ppc_stub_plt_call
3454};
3455
3456struct ppc_stub_hash_entry {
3457
3458 /* Base hash table entry structure. */
3459 struct bfd_hash_entry root;
3460
ad8e1ba5
AM		 3461 enum ppc_stub_type stub_type;
3462
721956f4
AM		 3463 /* The stub section. */
3464 asection *stub_sec;
3465
3466 /* Offset within stub_sec of the beginning of this stub. */
3467 bfd_vma stub_offset;
3468
3469 /* Given the symbol's value and its section we can determine its final
3470 value when building the stubs (so the stub knows where to jump. */
3471 bfd_vma target_value;
3472 asection *target_section;
3473
721956f4
AM		 3474 /* The symbol table entry, if any, that this was derived from. */
3475 struct ppc_link_hash_entry *h;
3476
411e1bfb
AM		 3477 /* And the reloc addend that this was derived from. */
3478 bfd_vma addend;
3479
721956f4
AM		 3480 /* Where this stub is being called from, or, in the case of combined
3481 stub sections, the first input section in the group. */
3482 asection *id_sec;
3483};
3484
3485struct ppc_branch_hash_entry {
3486
3487 /* Base hash table entry structure. */
3488 struct bfd_hash_entry root;
3489
c456f082 3490 /* Offset within branch lookup table. */
721956f4
AM		 3491 unsigned int offset;
3492
3493 /* Generation marker. */
3494 unsigned int iter;
3495};
65f38f15
AM		 3496
3497struct ppc_link_hash_entry
3498{
3499 struct elf_link_hash_entry elf;
3500
b3fac117
AM		 3501 union {
3502 /* A pointer to the most recently used stub hash entry against this
3503 symbol. */
3504 struct ppc_stub_hash_entry *stub_cache;
3505
3506 /* A pointer to the next symbol starting with a '.' */
3507 struct ppc_link_hash_entry *next_dot_sym;
3508 } u;
721956f4 3509
65f38f15
AM		 3510 /* Track dynamic relocs copied for this symbol. */
3511 struct ppc_dyn_relocs *dyn_relocs;
e86ce104 3512
721956f4 3513 /* Link between function code and descriptor symbols. */
34814b9f 3514 struct ppc_link_hash_entry *oh;
721956f4 3515
e86ce104
AM		 3516 /* Flag function code and descriptor symbols. */
3517 unsigned int is_func:1;
3518 unsigned int is_func_descriptor:1;
908b32fc 3519 unsigned int fake:1;
411e1bfb 3520
c5614fa4
AM		 3521 /* Whether global opd/toc sym has been adjusted or not.
3522 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3523 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3524 unsigned int adjust_done:1;
3525
99877b66
AM		 3526 /* Set if we twiddled this symbol to weak at some stage. */
3527 unsigned int was_undefined:1;
3528
411e1bfb 3529 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3530 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3531 corresponding relocs are encountered during check_relocs.
3532 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3533 indicate the corresponding GOT entry type is not needed.
3534 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3535 a TPREL one. We use a separate flag rather than setting TPREL
3536 just for convenience in distinguishing the two cases. */
3537#define TLS_GD 1 /* GD reloc. */
3538#define TLS_LD 2 /* LD reloc. */
3539#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3540#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3541#define TLS_TLS 16 /* Any TLS reloc. */
3542#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3543#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3544 char tls_mask;
65f38f15
AM		 3545};
3546
3547/* ppc64 ELF linker hash table. */
3548
3549struct ppc_link_hash_table
3550{
3551 struct elf_link_hash_table elf;
3552
721956f4
AM		 3553 /* The stub hash table. */
3554 struct bfd_hash_table stub_hash_table;
3555
3556 /* Another hash table for plt_branch stubs. */
3557 struct bfd_hash_table branch_hash_table;
3558
3559 /* Linker stub bfd. */
3560 bfd *stub_bfd;
3561
3562 /* Linker call-backs. */
4ce794b7
AM		 3563 asection * (*add_stub_section) (const char *, asection *);
3564 void (*layout_sections_again) (void);
721956f4
AM		 3565
3566 /* Array to keep track of which stub sections have been created, and
3567 information on stub grouping. */
3568 struct map_stub {
3569 /* This is the section to which stubs in the group will be attached. */
3570 asection *link_sec;
3571 /* The stub section. */
3572 asection *stub_sec;
ad8e1ba5
AM		 3573 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3574 bfd_vma toc_off;
721956f4
AM		 3575 } *stub_group;
3576
ad8e1ba5
AM		 3577 /* Temp used when calculating TOC pointers. */
3578 bfd_vma toc_curr;
3579
8f3bab57
AM		 3580 /* Highest input section id. */
3581 int top_id;
3582
734b6cf9
AM		 3583 /* Highest output section index. */
3584 int top_index;
3585
b3fac117
AM		 3586 /* Used when adding symbols. */
3587 struct ppc_link_hash_entry *dot_syms;
3588
734b6cf9
AM		 3589 /* List of input sections for each output section. */
3590 asection **input_list;
721956f4 3591
65f38f15 3592 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3593 asection *got;
4ce794b7
AM		 3594 asection *plt;
3595 asection *relplt;
3596 asection *dynbss;
3597 asection *relbss;
3598 asection *glink;
82bd7b59 3599 asection *sfpr;
4ce794b7
AM		 3600 asection *brlt;
3601 asection *relbrlt;
ec338859 3602
8387904d
AM		 3603 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3604 struct ppc_link_hash_entry *tls_get_addr;
3605 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3606
9b5ecbd0
AM		 3607 /* Statistics. */
3608 unsigned long stub_count[ppc_stub_plt_call];
3609
ee75fd95
AM		 3610 /* Number of stubs against global syms. */
3611 unsigned long stub_globals;
3612
ad8e1ba5 3613 /* Set if we should emit symbols for stubs. */
99877b66 3614 unsigned int emit_stub_syms:1;
ad8e1ba5 3615
4c52953f
AM		 3616 /* Support for multiple toc sections. */
3617 unsigned int no_multi_toc:1;
3618 unsigned int multi_toc_needed:1;
3619
5d1634d7 3620 /* Set on error. */
99877b66 3621 unsigned int stub_error:1;
721956f4 3622
7d9616d7 3623 /* Temp used by ppc64_elf_process_dot_syms. */
99877b66 3624 unsigned int twiddled_syms:1;
721956f4
AM		 3625
3626 /* Incremented every time we size stubs. */
3627 unsigned int stub_iteration;
5d1634d7 3628
ec338859
AM		 3629 /* Small local sym to section mapping cache. */
3630 struct sym_sec_cache sym_sec;
65f38f15
AM		 3631};
3632
4c52953f
AM		 3633/* Rename some of the generic section flags to better document how they
3634 are used here. */
3635#define has_toc_reloc has_gp_reloc
3636#define makes_toc_func_call need_finalize_relax
3637#define call_check_in_progress reloc_done
3638
65f38f15
AM		 3639/* Get the ppc64 ELF linker hash table from a link_info structure. */
3640
3641#define ppc_hash_table(p) \
3642 ((struct ppc_link_hash_table *) ((p)->hash))
3643
721956f4
AM		 3644#define ppc_stub_hash_lookup(table, string, create, copy) \
3645 ((struct ppc_stub_hash_entry *) \
3646 bfd_hash_lookup ((table), (string), (create), (copy)))
3647
3648#define ppc_branch_hash_lookup(table, string, create, copy) \
3649 ((struct ppc_branch_hash_entry *) \
3650 bfd_hash_lookup ((table), (string), (create), (copy)))
3651
3652/* Create an entry in the stub hash table. */
3653
3654static struct bfd_hash_entry *
4ce794b7
AM		 3655stub_hash_newfunc (struct bfd_hash_entry *entry,
3656 struct bfd_hash_table *table,
3657 const char *string)
721956f4
AM		 3658{
3659 /* Allocate the structure if it has not already been allocated by a
3660 subclass. */
3661 if (entry == NULL)
3662 {
3663 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3664 if (entry == NULL)
3665 return entry;
3666 }
3667
3668 /* Call the allocation method of the superclass. */
3669 entry = bfd_hash_newfunc (entry, table, string);
3670 if (entry != NULL)
3671 {
3672 struct ppc_stub_hash_entry *eh;
3673
3674 /* Initialize the local fields. */
3675 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3676 eh->stub_type = ppc_stub_none;
721956f4
AM		 3677 eh->stub_sec = NULL;
3678 eh->stub_offset = 0;
3679 eh->target_value = 0;
3680 eh->target_section = NULL;
721956f4
AM		 3681 eh->h = NULL;
3682 eh->id_sec = NULL;
3683 }
3684
3685 return entry;
3686}
3687
3688/* Create an entry in the branch hash table. */
3689
3690static struct bfd_hash_entry *
4ce794b7
AM		 3691branch_hash_newfunc (struct bfd_hash_entry *entry,
3692 struct bfd_hash_table *table,
3693 const char *string)
721956f4
AM		 3694{
3695 /* Allocate the structure if it has not already been allocated by a
3696 subclass. */
3697 if (entry == NULL)
3698 {
3699 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3700 if (entry == NULL)
3701 return entry;
3702 }
3703
3704 /* Call the allocation method of the superclass. */
3705 entry = bfd_hash_newfunc (entry, table, string);
3706 if (entry != NULL)
3707 {
3708 struct ppc_branch_hash_entry *eh;
3709
3710 /* Initialize the local fields. */
3711 eh = (struct ppc_branch_hash_entry *) entry;
3712 eh->offset = 0;
3713 eh->iter = 0;
3714 }
3715
3716 return entry;
3717}
3718
65f38f15
AM		 3719/* Create an entry in a ppc64 ELF linker hash table. */
3720
3721static struct bfd_hash_entry *
4ce794b7
AM		 3722link_hash_newfunc (struct bfd_hash_entry *entry,
3723 struct bfd_hash_table *table,
3724 const char *string)
65f38f15
AM		 3725{
3726 /* Allocate the structure if it has not already been allocated by a
3727 subclass. */
3728 if (entry == NULL)
3729 {
3730 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3731 if (entry == NULL)
3732 return entry;
3733 }
3734
3735 /* Call the allocation method of the superclass. */
3736 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3737 if (entry != NULL)
3738 {
3739 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3740
b3fac117 3741 memset (&eh->u.stub_cache, 0,
908b32fc 3742 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 3743 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3744
3745 /* When making function calls, old ABI code references function entry
3746 points (dot symbols), while new ABI code references the function
3747 descriptor symbol. We need to make any combination of reference and
3748 definition work together, without breaking archive linking.
3749
3750 For a defined function "foo" and an undefined call to "bar":
3751 An old object defines "foo" and ".foo", references ".bar" (possibly
3752 "bar" too).
3753 A new object defines "foo" and references "bar".
3754
3755 A new object thus has no problem with its undefined symbols being
3756 satisfied by definitions in an old object. On the other hand, the
3757 old object won't have ".bar" satisfied by a new object.
3758
3759 Keep a list of newly added dot-symbols. */
3760
3761 if (string[0] == '.')
3762 {
3763 struct ppc_link_hash_table *htab;
3764
3765 htab = (struct ppc_link_hash_table *) table;
3766 eh->u.next_dot_sym = htab->dot_syms;
3767 htab->dot_syms = eh;
3768 }
65f38f15
AM		 3769 }
3770
3771 return entry;
3772}
3773
3774/* Create a ppc64 ELF linker hash table. */
3775
3776static struct bfd_link_hash_table *
4ce794b7 3777ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 3778{
3779 struct ppc_link_hash_table *htab;
3780 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3781
4ce794b7 3782 htab = bfd_zmalloc (amt);
65f38f15
AM		 3783 if (htab == NULL)
3784 return NULL;
3785
66eb6687
AM		 3786 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
3787 sizeof (struct ppc_link_hash_entry)))
65f38f15 3788 {
e2d34d7d 3789 free (htab);
65f38f15
AM		 3790 return NULL;
3791 }
3792
721956f4 3793 /* Init the stub hash table too. */
66eb6687
AM		 3794 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
3795 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM		 3796 return NULL;
3797
3798 /* And the branch hash table. */
66eb6687
AM		 3799 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
3800 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM		 3801 return NULL;
3802
3254fd24
AM		 3803 /* Initializing two fields of the union is just cosmetic. We really
3804 only care about glist, but when compiled on a 32-bit host the
3805 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3806 debugger inspection of these fields look nicer. */
a6aa5195
AM		 3807 htab->elf.init_got_refcount.refcount = 0;
3808 htab->elf.init_got_refcount.glist = NULL;
3809 htab->elf.init_plt_refcount.refcount = 0;
3810 htab->elf.init_plt_refcount.glist = NULL;
3811 htab->elf.init_got_offset.offset = 0;
3812 htab->elf.init_got_offset.glist = NULL;
3813 htab->elf.init_plt_offset.offset = 0;
3814 htab->elf.init_plt_offset.glist = NULL;
3254fd24 3815
65f38f15
AM		 3816 return &htab->elf.root;
3817}
3818
721956f4
AM		 3819/* Free the derived linker hash table. */
3820
3821static void
4ce794b7 3822ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4
AM		 3823{
3824 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
3825
3826 bfd_hash_table_free (&ret->stub_hash_table);
3827 bfd_hash_table_free (&ret->branch_hash_table);
3828 _bfd_generic_link_hash_table_free (hash);
3829}
3830
e717da7e
AM		 3831/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3832
3833void
3834ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
3835{
3836 struct ppc_link_hash_table *htab;
3837
3838 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
3839
3840/* Always hook our dynamic sections into the first bfd, which is the
3841 linker created stub bfd. This ensures that the GOT header is at
3842 the start of the output TOC section. */
3843 htab = ppc_hash_table (info);
3844 htab->stub_bfd = abfd;
3845 htab->elf.dynobj = abfd;
3846}
3847
721956f4
AM		 3848/* Build a name for an entry in the stub hash table. */
3849
3850static char *
4ce794b7
AM		 3851ppc_stub_name (const asection *input_section,
3852 const asection *sym_sec,
3853 const struct ppc_link_hash_entry *h,
3854 const Elf_Internal_Rela *rel)
721956f4
AM		 3855{
3856 char *stub_name;
3857 bfd_size_type len;
3858
3859 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3860 offsets from a sym as a branch target? In fact, we could
3861 probably assume the addend is always zero. */
3862 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
3863
3864 if (h)
3865 {
3866 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
3867 stub_name = bfd_malloc (len);
46de2a7c
AM		 3868 if (stub_name == NULL)
3869 return stub_name;
3870
3871 sprintf (stub_name, "%08x.%s+%x",
3872 input_section->id & 0xffffffff,
3873 h->elf.root.root.string,
3874 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 3875 }
3876 else
3877 {
ad8e1ba5 3878 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 3879 stub_name = bfd_malloc (len);
46de2a7c
AM		 3880 if (stub_name == NULL)
3881 return stub_name;
3882
3883 sprintf (stub_name, "%08x.%x:%x+%x",
3884 input_section->id & 0xffffffff,
3885 sym_sec->id & 0xffffffff,
3886 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
3887 (int) rel->r_addend & 0xffffffff);
721956f4 3888 }
ee75fd95
AM		 3889 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
3890 stub_name[len - 2] = 0;
721956f4
AM		 3891 return stub_name;
3892}
3893
3894/* Look up an entry in the stub hash. Stub entries are cached because
3895 creating the stub name takes a bit of time. */
3896
3897static struct ppc_stub_hash_entry *
4ce794b7
AM		 3898ppc_get_stub_entry (const asection *input_section,
3899 const asection *sym_sec,
039b3fef 3900 struct ppc_link_hash_entry *h,
4ce794b7
AM		 3901 const Elf_Internal_Rela *rel,
3902 struct ppc_link_hash_table *htab)
721956f4
AM		 3903{
3904 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 3905 const asection *id_sec;
3906
3907 /* If this input section is part of a group of sections sharing one
3908 stub section, then use the id of the first section in the group.
3909 Stub names need to include a section id, as there may well be
3910 more than one stub used to reach say, printf, and we need to
3911 distinguish between them. */
3912 id_sec = htab->stub_group[input_section->id].link_sec;
3913
b3fac117
AM		 3914 if (h != NULL && h->u.stub_cache != NULL
3915 && h->u.stub_cache->h == h
3916 && h->u.stub_cache->id_sec == id_sec)
721956f4 3917 {
b3fac117 3918 stub_entry = h->u.stub_cache;
721956f4
AM		 3919 }
3920 else
3921 {
3922 char *stub_name;
3923
3924 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
3925 if (stub_name == NULL)
3926 return NULL;
3927
3928 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 3929 stub_name, FALSE, FALSE);
721956f4 3930 if (h != NULL)
b3fac117 3931 h->u.stub_cache = stub_entry;
721956f4
AM		 3932
3933 free (stub_name);
3934 }
3935
3936 return stub_entry;
3937}
3938
3939/* Add a new stub entry to the stub hash. Not all fields of the new
3940 stub entry are initialised. */
3941
3942static struct ppc_stub_hash_entry *
4ce794b7
AM		 3943ppc_add_stub (const char *stub_name,
3944 asection *section,
3945 struct ppc_link_hash_table *htab)
721956f4
AM		 3946{
3947 asection *link_sec;
3948 asection *stub_sec;
3949 struct ppc_stub_hash_entry *stub_entry;
3950
3951 link_sec = htab->stub_group[section->id].link_sec;
3952 stub_sec = htab->stub_group[section->id].stub_sec;
3953 if (stub_sec == NULL)
3954 {
3955 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3956 if (stub_sec == NULL)
3957 {
d4c88bbb 3958 size_t namelen;
721956f4
AM		 3959 bfd_size_type len;
3960 char *s_name;
3961
d4c88bbb
AM		 3962 namelen = strlen (link_sec->name);
3963 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM		 3964 s_name = bfd_alloc (htab->stub_bfd, len);
3965 if (s_name == NULL)
3966 return NULL;
3967
d4c88bbb
AM		 3968 memcpy (s_name, link_sec->name, namelen);
3969 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM		 3970 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3971 if (stub_sec == NULL)
3972 return NULL;
3973 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3974 }
3975 htab->stub_group[section->id].stub_sec = stub_sec;
3976 }
3977
3978 /* Enter this entry into the linker stub hash table. */
3979 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 3980 TRUE, FALSE);
721956f4
AM		 3981 if (stub_entry == NULL)
3982 {
d003868e
AM		 3983 (*_bfd_error_handler) (_("%B: cannot create stub entry %s"),
3984 section->owner, stub_name);
721956f4
AM		 3985 return NULL;
3986 }
3987
3988 stub_entry->stub_sec = stub_sec;
3989 stub_entry->stub_offset = 0;
3990 stub_entry->id_sec = link_sec;
3991 return stub_entry;
3992}
3993
82bd7b59
AM		 3994/* Create sections for linker generated code. */
3995
b34976b6 3996static bfd_boolean
4ce794b7 3997create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM		 3998{
3999 struct ppc_link_hash_table *htab;
4000 flagword flags;
4001
4002 htab = ppc_hash_table (info);
4003
4004 /* Create .sfpr for code to save and restore fp regs. */
4005 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4006 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L		 4007 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4008 flags);
82bd7b59 4009 if (htab->sfpr == NULL
82bd7b59 4010 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 4011 return FALSE;
82bd7b59 4012
721956f4 4013 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L		 4014 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4015 flags);
4ce794b7 4016 if (htab->glink == NULL
ee4bf8d2 4017 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 4018 return FALSE;
82bd7b59 4019
c456f082 4020 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM		 4021 flags = (SEC_ALLOC | SEC_LOAD
4022 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4023 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4024 flags);
4ce794b7 4025 if (htab->brlt == NULL
4ce794b7 4026 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 4027 return FALSE;
721956f4 4028
e4e0193e 4029 if (!info->shared)
c456f082
AM		 4030 return TRUE;
4031
e4e0193e
AM		 4032 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4033 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4034 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4035 ".rela.branch_lt",
4036 flags);
c456f082
AM		 4037 if (!htab->relbrlt
4038 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4039 return FALSE;
4040
b34976b6 4041 return TRUE;
82bd7b59
AM		 4042}
4043
e717da7e
AM		 4044/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4045 not already done. */
65f38f15 4046
b34976b6 4047static bfd_boolean
e717da7e 4048create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4049{
e717da7e
AM		 4050 asection *got, *relgot;
4051 flagword flags;
4052 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4053
0c8d6e5c 4054 if (!is_ppc64_elf (abfd))
0ffa91dd
NC		 4055 return FALSE;
4056
4ce794b7 4057 if (!htab->got)
e717da7e
AM		 4058 {
4059 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4060 return FALSE;
4061
4062 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4063 if (!htab->got)
4064 abort ();
4065 }
4066
4067 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4068 | SEC_LINKER_CREATED);
4069
c456f082 4070 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4071 if (!got
e717da7e
AM		 4072 || !bfd_set_section_alignment (abfd, got, 3))
4073 return FALSE;
65f38f15 4074
c456f082
AM		 4075 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4076 flags | SEC_READONLY);
e717da7e 4077 if (!relgot
e717da7e 4078 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4079 return FALSE;
e717da7e
AM		 4080
4081 ppc64_elf_tdata (abfd)->got = got;
4082 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4083 return TRUE;
65f38f15 4084}
5bd4f169 4085
82bd7b59 4086/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4087
b34976b6 4088static bfd_boolean
4ce794b7 4089ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4090{
65f38f15 4091 struct ppc_link_hash_table *htab;
5bd4f169 4092
65f38f15 4093 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4094 return FALSE;
65f38f15 4095
e717da7e
AM		 4096 htab = ppc_hash_table (info);
4097 if (!htab->got)
4098 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM		 4099 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4100 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4101 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 4102 if (!info->shared)
4ce794b7 4103 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 4104
e717da7e 4105 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 4106 || (!info->shared && !htab->relbss))
65f38f15
AM		 4107 abort ();
4108
b34976b6 4109 return TRUE;
5bd4f169
AM		 4110}
4111
40d16e0b
AM		 4112/* Merge PLT info on FROM with that on TO. */
4113
4114static void
4115move_plt_plist (struct ppc_link_hash_entry *from,
4116 struct ppc_link_hash_entry *to)
4117{
4118 if (from->elf.plt.plist != NULL)
4119 {
4120 if (to->elf.plt.plist != NULL)
4121 {
4122 struct plt_entry **entp;
4123 struct plt_entry *ent;
4124
4125 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4126 {
4127 struct plt_entry *dent;
4128
4129 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4130 if (dent->addend == ent->addend)
4131 {
4132 dent->plt.refcount += ent->plt.refcount;
4133 *entp = ent->next;
4134 break;
4135 }
4136 if (dent == NULL)
4137 entp = &ent->next;
4138 }
4139 *entp = to->elf.plt.plist;
4140 }
4141
4142 to->elf.plt.plist = from->elf.plt.plist;
4143 from->elf.plt.plist = NULL;
4144 }
4145}
4146
65f38f15
AM		 4147/* Copy the extra info we tack onto an elf_link_hash_entry. */
4148
4149static void
fcfa13d2
AM		 4150ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4151 struct elf_link_hash_entry *dir,
4152 struct elf_link_hash_entry *ind)
65f38f15
AM		 4153{
4154 struct ppc_link_hash_entry *edir, *eind;
4155
4156 edir = (struct ppc_link_hash_entry *) dir;
4157 eind = (struct ppc_link_hash_entry *) ind;
4158
411e1bfb 4159 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4160 if (eind->dyn_relocs != NULL)
65f38f15 4161 {
bbd7ec4a
AM		 4162 if (edir->dyn_relocs != NULL)
4163 {
4164 struct ppc_dyn_relocs **pp;
4165 struct ppc_dyn_relocs *p;
4166
fcfa13d2 4167 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4168 list. Merge any entries against the same section. */
4169 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4170 {
4171 struct ppc_dyn_relocs *q;
4172
4173 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4174 if (q->sec == p->sec)
4175 {
4176 q->pc_count += p->pc_count;
4177 q->count += p->count;
4178 *pp = p->next;
4179 break;
4180 }
4181 if (q == NULL)
4182 pp = &p->next;
4183 }
4184 *pp = edir->dyn_relocs;
4185 }
4186
65f38f15
AM		 4187 edir->dyn_relocs = eind->dyn_relocs;
4188 eind->dyn_relocs = NULL;
4189 }
65f38f15 4190
6349e628
AM		 4191 edir->is_func |= eind->is_func;
4192 edir->is_func_descriptor |= eind->is_func_descriptor;
58ac9f71 4193 edir->tls_mask |= eind->tls_mask;
6349e628 4194
81848ca0 4195 /* If called to transfer flags for a weakdef during processing
f5385ebf 4196 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
81848ca0 4197 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
f5385ebf
AM		 4198 if (!(ELIMINATE_COPY_RELOCS
4199 && eind->elf.root.type != bfd_link_hash_indirect
4200 && edir->elf.dynamic_adjusted))
4201 edir->elf.non_got_ref |= eind->elf.non_got_ref;
81848ca0 4202
f5385ebf
AM		 4203 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4204 edir->elf.ref_regular |= eind->elf.ref_regular;
4205 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4206 edir->elf.needs_plt |= eind->elf.needs_plt;
6349e628
AM		 4207
4208 /* If we were called to copy over info for a weak sym, that's all. */
4209 if (eind->elf.root.type != bfd_link_hash_indirect)
4210 return;
4211
81848ca0
AM		 4212 /* Copy over got entries that we may have already seen to the
4213 symbol which just became indirect. */
411e1bfb
AM		 4214 if (eind->elf.got.glist != NULL)
4215 {
4216 if (edir->elf.got.glist != NULL)
4217 {
4218 struct got_entry **entp;
4219 struct got_entry *ent;
4220
4221 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4222 {
4223 struct got_entry *dent;
4224
4225 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4226 if (dent->addend == ent->addend
e717da7e 4227 && dent->owner == ent->owner
411e1bfb
AM		 4228 && dent->tls_type == ent->tls_type)
4229 {
4230 dent->got.refcount += ent->got.refcount;
4231 *entp = ent->next;
4232 break;
4233 }
4234 if (dent == NULL)
4235 entp = &ent->next;
4236 }
4237 *entp = edir->elf.got.glist;
4238 }
4239
4240 edir->elf.got.glist = eind->elf.got.glist;
4241 eind->elf.got.glist = NULL;
4242 }
4243
4244 /* And plt entries. */
40d16e0b 4245 move_plt_plist (eind, edir);
411e1bfb 4246
fcfa13d2 4247 if (eind->elf.dynindx != -1)
411e1bfb 4248 {
fcfa13d2
AM		 4249 if (edir->elf.dynindx != -1)
4250 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4251 edir->elf.dynstr_index);
411e1bfb
AM		 4252 edir->elf.dynindx = eind->elf.dynindx;
4253 edir->elf.dynstr_index = eind->elf.dynstr_index;
4254 eind->elf.dynindx = -1;
4255 eind->elf.dynstr_index = 0;
4256 }
411e1bfb
AM		 4257}
4258
8387904d
AM		 4259/* Find the function descriptor hash entry from the given function code
4260 hash entry FH. Link the entries via their OH fields. */
4261
4262static struct ppc_link_hash_entry *
4263get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
4264{
4265 struct ppc_link_hash_entry *fdh = fh->oh;
4266
4267 if (fdh == NULL)
4268 {
4269 const char *fd_name = fh->elf.root.root.string + 1;
4270
4271 fdh = (struct ppc_link_hash_entry *)
4272 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
4273 if (fdh != NULL)
4274 {
4275 fdh->is_func_descriptor = 1;
4276 fdh->oh = fh;
4277 fh->is_func = 1;
4278 fh->oh = fdh;
4279 }
4280 }
4281
4282 return fdh;
4283}
4284
bb700d78
AM		 4285/* Make a fake function descriptor sym for the code sym FH. */
4286
4287static struct ppc_link_hash_entry *
4288make_fdh (struct bfd_link_info *info,
908b32fc 4289 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4290{
4291 bfd *abfd;
4292 asymbol *newsym;
4293 struct bfd_link_hash_entry *bh;
4294 struct ppc_link_hash_entry *fdh;
4295
4296 abfd = fh->elf.root.u.undef.abfd;
4297 newsym = bfd_make_empty_symbol (abfd);
4298 newsym->name = fh->elf.root.root.string + 1;
4299 newsym->section = bfd_und_section_ptr;
4300 newsym->value = 0;
908b32fc 4301 newsym->flags = BSF_WEAK;
bb700d78
AM		 4302
4303 bh = NULL;
4304 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4305 newsym->flags, newsym->section,
4306 newsym->value, NULL, FALSE, FALSE,
4307 &bh))
4308 return NULL;
4309
4310 fdh = (struct ppc_link_hash_entry *) bh;
4311 fdh->elf.non_elf = 0;
908b32fc
AM		 4312 fdh->fake = 1;
4313 fdh->is_func_descriptor = 1;
4314 fdh->oh = fh;
4315 fh->is_func = 1;
4316 fh->oh = fdh;
bb700d78
AM		 4317 return fdh;
4318}
4319
8387904d
AM		 4320/* Fix function descriptor symbols defined in .opd sections to be
4321 function type. */
555cd476
AM		 4322
4323static bfd_boolean
b3fac117 4324ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
555cd476
AM		 4325 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4326 Elf_Internal_Sym *isym,
b3fac117 4327 const char **name ATTRIBUTE_UNUSED,
555cd476
AM		 4328 flagword *flags ATTRIBUTE_UNUSED,
4329 asection **sec,
4330 bfd_vma *value ATTRIBUTE_UNUSED)
4331{
8843416a
AM		 4332 if (*sec != NULL
4333 && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
555cd476 4334 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4335
555cd476
AM		 4336 return TRUE;
4337}
4338
8387904d 4339/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4340 inclusion of a new ABI object archive that defines "bar".
4341 NAME is a symbol defined in an archive. Return a symbol in the hash
4342 table that might be satisfied by the archive symbols. */
8387904d
AM		 4343
4344static struct elf_link_hash_entry *
4345ppc64_elf_archive_symbol_lookup (bfd *abfd,
4346 struct bfd_link_info *info,
4347 const char *name)
4348{
4349 struct elf_link_hash_entry *h;
4350 char *dot_name;
4351 size_t len;
4352
4353 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4354 if (h != NULL
4355 /* Don't return this sym if it is a fake function descriptor
4356 created by add_symbol_adjust. */
4357 && !(h->root.type == bfd_link_hash_undefweak
4358 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4359 return h;
4360
4361 if (name[0] == '.')
4362 return h;
4363
4364 len = strlen (name);
4365 dot_name = bfd_alloc (abfd, len + 2);
4366 if (dot_name == NULL)
4367 return (struct elf_link_hash_entry *) 0 - 1;
4368 dot_name[0] = '.';
4369 memcpy (dot_name + 1, name, len + 1);
4370 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4371 bfd_release (abfd, dot_name);
4372 return h;
4373}
4374
4375/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4376 new ABI object defines "bar". Well, at least, undefined dot symbols
4377 are made weak. This stops later archive searches from including an
4378 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4379 prevents the linker complaining about undefined symbols.
4380 We also check and correct mismatched symbol visibility here. The
4381 most restrictive visibility of the function descriptor and the
4382 function entry symbol is used. */
8387904d
AM		 4383
4384static bfd_boolean
b3fac117 4385add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4386{
8387904d
AM		 4387 struct ppc_link_hash_table *htab;
4388 struct ppc_link_hash_entry *fdh;
4389
b3fac117 4390 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4391 return TRUE;
4392
b3fac117
AM		 4393 if (eh->elf.root.type == bfd_link_hash_warning)
4394 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4395
b3fac117
AM		 4396 if (eh->elf.root.root.string[0] != '.')
4397 abort ();
8387904d 4398
b3fac117 4399 htab = ppc_hash_table (info);
99877b66 4400 fdh = get_fdh (eh, htab);
bb700d78 4401 if (fdh == NULL
b3fac117 4402 && !info->relocatable
bb700d78
AM		 4403 && (eh->elf.root.type == bfd_link_hash_undefined
4404 || eh->elf.root.type == bfd_link_hash_undefweak)
4405 && eh->elf.ref_regular)
4406 {
4407 /* Make an undefweak function descriptor sym, which is enough to
4408 pull in an --as-needed shared lib, but won't cause link
4409 errors. Archives are handled elsewhere. */
b3fac117 4410 fdh = make_fdh (info, eh);
bb700d78 4411 if (fdh == NULL)
b3fac117 4412 return FALSE;
bb700d78
AM		 4413 else
4414 fdh->elf.ref_regular = 1;
4415 }
e87d886e 4416 else if (fdh != NULL)
8387904d 4417 {
35b0ce59
AM		 4418 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4419 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4420 if (entry_vis < descr_vis)
4421 fdh->elf.other += entry_vis - descr_vis;
4422 else if (entry_vis > descr_vis)
4423 eh->elf.other += descr_vis - entry_vis;
4424
e87d886e
AM		 4425 if ((fdh->elf.root.type == bfd_link_hash_defined
4426 || fdh->elf.root.type == bfd_link_hash_defweak)
4427 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4428 {
4429 eh->elf.root.type = bfd_link_hash_undefweak;
4430 eh->was_undefined = 1;
4431 htab->twiddled_syms = 1;
4432 }
8387904d 4433 }
99877b66 4434
8387904d
AM		 4435 return TRUE;
4436}
4437
b3fac117
AM		 4438/* Process list of dot-symbols we made in link_hash_newfunc. */
4439
8387904d 4440static bfd_boolean
7d9616d7 4441ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
8387904d 4442{
99877b66 4443 struct ppc_link_hash_table *htab;
b3fac117 4444 struct ppc_link_hash_entry **p, *eh;
433817dd 4445
99877b66 4446 htab = ppc_hash_table (info);
0c8d6e5c 4447 if (!is_ppc64_elf (info->output_bfd))
35b0ce59
AM		 4448 return TRUE;
4449
0c8d6e5c 4450 if (is_ppc64_elf (ibfd))
b3fac117
AM		 4451 {
4452 p = &htab->dot_syms;
4453 while ((eh = *p) != NULL)
4454 {
4455 *p = NULL;
4456 if (!add_symbol_adjust (eh, info))
4457 return FALSE;
4458 p = &eh->u.next_dot_sym;
4459 }
4460 }
4461
4462 /* Clear the list for non-ppc64 input files. */
4463 p = &htab->dot_syms;
4464 while ((eh = *p) != NULL)
4465 {
4466 *p = NULL;
4467 p = &eh->u.next_dot_sym;
4468 }
99877b66
AM		 4469
4470 /* We need to fix the undefs list for any syms we have twiddled to
4471 undef_weak. */
4472 if (htab->twiddled_syms)
4473 {
77cfaee6 4474 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 4475 htab->twiddled_syms = 0;
4476 }
b3fac117 4477 return TRUE;
8387904d
AM		 4478}
4479
97fed1c9
JJ		 4480/* Undo hash table changes when an --as-needed input file is determined
4481 not to be needed. */
4482
4483static bfd_boolean
4484ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4485 struct bfd_link_info *info)
4486{
4487 ppc_hash_table (info)->dot_syms = NULL;
4488 return TRUE;
4489}
4490
411e1bfb 4491static bfd_boolean
4ce794b7
AM		 4492update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4493 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 4494{
4495 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e7b938ca 4496 char *local_got_tls_masks;
411e1bfb
AM		 4497
4498 if (local_got_ents == NULL)
4499 {
4500 bfd_size_type size = symtab_hdr->sh_info;
4501
e7b938ca 4502 size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks);
4ce794b7 4503 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb
AM		 4504 if (local_got_ents == NULL)
4505 return FALSE;
4506 elf_local_got_ents (abfd) = local_got_ents;
4507 }
4508
4509 if ((tls_type & TLS_EXPLICIT) == 0)
4510 {
4511 struct got_entry *ent;
4512
4513 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 4514 if (ent->addend == r_addend
4515 && ent->owner == abfd
4516 && ent->tls_type == tls_type)
411e1bfb
AM		 4517 break;
4518 if (ent == NULL)
4519 {
4520 bfd_size_type amt = sizeof (*ent);
4ce794b7 4521 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4522 if (ent == NULL)
4523 return FALSE;
4524 ent->next = local_got_ents[r_symndx];
4525 ent->addend = r_addend;
e717da7e 4526 ent->owner = abfd;
411e1bfb
AM		 4527 ent->tls_type = tls_type;
4528 ent->got.refcount = 0;
4529 local_got_ents[r_symndx] = ent;
4530 }
4531 ent->got.refcount += 1;
4532 }
4533
e7b938ca
AM		 4534 local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
4535 local_got_tls_masks[r_symndx] |= tls_type;
411e1bfb 4536 return TRUE;
65f38f15
AM		 4537}
4538
411e1bfb 4539static bfd_boolean
4ce794b7 4540update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend)
1e2f5b6e 4541{
411e1bfb 4542 struct plt_entry *ent;
1e2f5b6e 4543
411e1bfb
AM		 4544 for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next)
4545 if (ent->addend == addend)
4546 break;
4547 if (ent == NULL)
1e2f5b6e 4548 {
411e1bfb 4549 bfd_size_type amt = sizeof (*ent);
4ce794b7 4550 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 4551 if (ent == NULL)
4552 return FALSE;
4553 ent->next = eh->elf.plt.plist;
4554 ent->addend = addend;
4555 ent->plt.refcount = 0;
4556 eh->elf.plt.plist = ent;
1e2f5b6e 4557 }
411e1bfb 4558 ent->plt.refcount += 1;
f5385ebf 4559 eh->elf.needs_plt = 1;
93f3fa99
AM		 4560 if (eh->elf.root.root.string[0] == '.'
4561 && eh->elf.root.root.string[1] != '\0')
4562 eh->is_func = 1;
b34976b6 4563 return TRUE;
1e2f5b6e
AM		 4564}
4565
5bd4f169 4566/* Look through the relocs for a section during the first phase, and
65f38f15 4567 calculate needed space in the global offset table, procedure
5d1634d7 4568 linkage table, and dynamic reloc sections. */
5bd4f169 4569
b34976b6 4570static bfd_boolean
4ce794b7
AM		 4571ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4572 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4573{
65f38f15 4574 struct ppc_link_hash_table *htab;
5bd4f169
AM		 4575 Elf_Internal_Shdr *symtab_hdr;
4576 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4577 const Elf_Internal_Rela *rel;
4578 const Elf_Internal_Rela *rel_end;
5bd4f169 4579 asection *sreloc;
1e2f5b6e 4580 asection **opd_sym_map;
5bd4f169 4581
1049f94e 4582 if (info->relocatable)
b34976b6 4583 return TRUE;
5bd4f169 4584
680a3378
AM		 4585 /* Don't do anything special with non-loaded, non-alloced sections.
4586 In particular, any relocs in such sections should not affect GOT
4587 and PLT reference counting (ie. we don't allow them to create GOT
4588 or PLT entries), there's no possibility or desire to optimize TLS
4589 relocs, and there's not much point in propagating relocs to shared
4590 libs that the dynamic linker won't relocate. */
4591 if ((sec->flags & SEC_ALLOC) == 0)
4592 return TRUE;
4593
0c8d6e5c 4594 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4595
65f38f15 4596 htab = ppc_hash_table (info);
0ffa91dd 4597 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169
AM		 4598
4599 sym_hashes = elf_sym_hashes (abfd);
4600 sym_hashes_end = (sym_hashes
1e2f5b6e
AM		 4601 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
4602 - symtab_hdr->sh_info);
5bd4f169
AM		 4603
4604 sreloc = NULL;
1e2f5b6e
AM		 4605 opd_sym_map = NULL;
4606 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
4607 {
4608 /* Garbage collection needs some extra help with .opd sections.
4609 We don't want to necessarily keep everything referenced by
4610 relocs in .opd, as that would keep all functions. Instead,
4611 if we reference an .opd symbol (a function descriptor), we
4612 want to keep the function code symbol's section. This is
4613 easy for global symbols, but for local syms we need to keep
74f0fb50 4614 information about the associated function section. */
1e2f5b6e
AM		 4615 bfd_size_type amt;
4616
74f0fb50 4617 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4618 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4619 if (opd_sym_map == NULL)
b34976b6 4620 return FALSE;
74f0fb50 4621 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM		 4622 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4623 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4624 }
5bd4f169 4625
82bd7b59
AM		 4626 if (htab->sfpr == NULL
4627 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4628 return FALSE;
82bd7b59 4629
5bd4f169
AM		 4630 rel_end = relocs + sec->reloc_count;
4631 for (rel = relocs; rel < rel_end; rel++)
4632 {
4633 unsigned long r_symndx;
4634 struct elf_link_hash_entry *h;
04c9666a 4635 enum elf_ppc64_reloc_type r_type;
411e1bfb 4636 int tls_type = 0;
7c8fe5c4 4637 struct _ppc64_elf_section_data *ppc64_sec;
5bd4f169
AM		 4638
4639 r_symndx = ELF64_R_SYM (rel->r_info);
4640 if (r_symndx < symtab_hdr->sh_info)
4641 h = NULL;
4642 else
973a3492
L		 4643 {
4644 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4645 while (h->root.type == bfd_link_hash_indirect
4646 || h->root.type == bfd_link_hash_warning)
4647 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4648 }
5bd4f169 4649
4ce794b7 4650 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 4651 switch (r_type)
5bd4f169 4652 {
411e1bfb
AM		 4653 case R_PPC64_GOT_TLSLD16:
4654 case R_PPC64_GOT_TLSLD16_LO:
4655 case R_PPC64_GOT_TLSLD16_HI:
4656 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 4657 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 4658 goto dogottls;
4659
4660 case R_PPC64_GOT_TLSGD16:
4661 case R_PPC64_GOT_TLSGD16_LO:
4662 case R_PPC64_GOT_TLSGD16_HI:
4663 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 4664 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 4665 goto dogottls;
4666
4667 case R_PPC64_GOT_TPREL16_DS:
4668 case R_PPC64_GOT_TPREL16_LO_DS:
4669 case R_PPC64_GOT_TPREL16_HI:
4670 case R_PPC64_GOT_TPREL16_HA:
1d483afe 4671 if (!info->executable)
411e1bfb
AM		 4672 info->flags |= DF_STATIC_TLS;
4673 tls_type = TLS_TLS | TLS_TPREL;
4674 goto dogottls;
4675
4676 case R_PPC64_GOT_DTPREL16_DS:
4677 case R_PPC64_GOT_DTPREL16_LO_DS:
4678 case R_PPC64_GOT_DTPREL16_HI:
4679 case R_PPC64_GOT_DTPREL16_HA:
4680 tls_type = TLS_TLS | TLS_DTPREL;
4681 dogottls:
4682 sec->has_tls_reloc = 1;
4683 /* Fall thru */
4684
5bd4f169 4685 case R_PPC64_GOT16:
5bd4f169 4686 case R_PPC64_GOT16_DS:
65f38f15
AM		 4687 case R_PPC64_GOT16_HA:
4688 case R_PPC64_GOT16_HI:
4689 case R_PPC64_GOT16_LO:
5bd4f169 4690 case R_PPC64_GOT16_LO_DS:
65f38f15 4691 /* This symbol requires a global offset table entry. */
4c52953f 4692 sec->has_toc_reloc = 1;
e717da7e
AM		 4693 if (ppc64_elf_tdata (abfd)->got == NULL
4694 && !create_got_section (abfd, info))
b34976b6 4695 return FALSE;
5bd4f169
AM		 4696
4697 if (h != NULL)
4698 {
411e1bfb
AM		 4699 struct ppc_link_hash_entry *eh;
4700 struct got_entry *ent;
65f38f15 4701
411e1bfb
AM		 4702 eh = (struct ppc_link_hash_entry *) h;
4703 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
4704 if (ent->addend == rel->r_addend
e717da7e 4705 && ent->owner == abfd
411e1bfb
AM		 4706 && ent->tls_type == tls_type)
4707 break;
4708 if (ent == NULL)
5bd4f169 4709 {
411e1bfb 4710 bfd_size_type amt = sizeof (*ent);
4ce794b7 4711 ent = bfd_alloc (abfd, amt);
411e1bfb 4712 if (ent == NULL)
b34976b6 4713 return FALSE;
411e1bfb
AM		 4714 ent->next = eh->elf.got.glist;
4715 ent->addend = rel->r_addend;
e717da7e 4716 ent->owner = abfd;
411e1bfb
AM		 4717 ent->tls_type = tls_type;
4718 ent->got.refcount = 0;
4719 eh->elf.got.glist = ent;
5bd4f169 4720 }
411e1bfb 4721 ent->got.refcount += 1;
e7b938ca 4722 eh->tls_mask |= tls_type;
5bd4f169 4723 }
411e1bfb
AM		 4724 else
4725 /* This is a global offset table entry for a local symbol. */
4726 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4727 rel->r_addend, tls_type))
4728 return FALSE;
5bd4f169
AM		 4729 break;
4730
5bd4f169 4731 case R_PPC64_PLT16_HA:
65f38f15
AM		 4732 case R_PPC64_PLT16_HI:
4733 case R_PPC64_PLT16_LO:
4734 case R_PPC64_PLT32:
4735 case R_PPC64_PLT64:
5bd4f169 4736 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 4737 actually build the entry in adjust_dynamic_symbol,
4738 because this might be a case of linking PIC code without
4739 linking in any dynamic objects, in which case we don't
4740 need to generate a procedure linkage table after all. */
5bd4f169
AM		 4741 if (h == NULL)
4742 {
4743 /* It does not make sense to have a procedure linkage
3fad3c7c 4744 table entry for a local symbol. */
5bd4f169 4745 bfd_set_error (bfd_error_bad_value);
b34976b6 4746 return FALSE;
5bd4f169 4747 }
411e1bfb
AM		 4748 else
4749 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4750 rel->r_addend))
4751 return FALSE;
5bd4f169
AM		 4752 break;
4753
4754 /* The following relocations don't need to propagate the
4755 relocation if linking a shared object since they are
4756 section relative. */
4757 case R_PPC64_SECTOFF:
4758 case R_PPC64_SECTOFF_LO:
4759 case R_PPC64_SECTOFF_HI:
4760 case R_PPC64_SECTOFF_HA:
4761 case R_PPC64_SECTOFF_DS:
4762 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 4763 case R_PPC64_DTPREL16:
4764 case R_PPC64_DTPREL16_LO:
4765 case R_PPC64_DTPREL16_HI:
4766 case R_PPC64_DTPREL16_HA:
4767 case R_PPC64_DTPREL16_DS:
4768 case R_PPC64_DTPREL16_LO_DS:
4769 case R_PPC64_DTPREL16_HIGHER:
4770 case R_PPC64_DTPREL16_HIGHERA:
4771 case R_PPC64_DTPREL16_HIGHEST:
4772 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 4773 break;
4774
ad8e1ba5
AM		 4775 /* Nor do these. */
4776 case R_PPC64_TOC16:
4777 case R_PPC64_TOC16_LO:
4778 case R_PPC64_TOC16_HI:
4779 case R_PPC64_TOC16_HA:
4780 case R_PPC64_TOC16_DS:
4781 case R_PPC64_TOC16_LO_DS:
4c52953f 4782 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 4783 break;
4784
5bd4f169
AM		 4785 /* This relocation describes the C++ object vtable hierarchy.
4786 Reconstruct it for later use during GC. */
4787 case R_PPC64_GNU_VTINHERIT:
c152c796 4788 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4789 return FALSE;
5bd4f169
AM		 4790 break;
4791
4792 /* This relocation describes which C++ vtable entries are actually
4793 used. Record for later use during GC. */
4794 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 4795 BFD_ASSERT (h != NULL);
4796 if (h != NULL
4797 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 4798 return FALSE;
5bd4f169
AM		 4799 break;
4800
721956f4
AM		 4801 case R_PPC64_REL14:
4802 case R_PPC64_REL14_BRTAKEN:
4803 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 4804 {
4805 asection *dest = NULL;
4806
4807 /* Heuristic: If jumping outside our section, chances are
4808 we are going to need a stub. */
4809 if (h != NULL)
4810 {
4811 /* If the sym is weak it may be overridden later, so
4812 don't assume we know where a weak sym lives. */
4813 if (h->root.type == bfd_link_hash_defined)
4814 dest = h->root.u.def.section;
4815 }
4816 else
4817 dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4818 sec, r_symndx);
4819 if (dest != sec)
7c8fe5c4 4820 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 4821 }
721956f4
AM		 4822 /* Fall through. */
4823
5d1634d7 4824 case R_PPC64_REL24:
8387904d 4825 if (h != NULL)
5d1634d7
AM		 4826 {
4827 /* We may need a .plt entry if the function this reloc
4828 refers to is in a shared lib. */
411e1bfb
AM		 4829 if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h,
4830 rel->r_addend))
4831 return FALSE;
8387904d
AM		 4832 if (h == &htab->tls_get_addr->elf
4833 || h == &htab->tls_get_addr_fd->elf)
411e1bfb 4834 sec->has_tls_reloc = 1;
8387904d 4835 else if (htab->tls_get_addr == NULL
0112cd26 4836 && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr")
a48ebf4d
AM		 4837 && (h->root.root.string[15] == 0
4838 || h->root.root.string[15] == '@'))
411e1bfb 4839 {
8387904d
AM		 4840 htab->tls_get_addr = (struct ppc_link_hash_entry *) h;
4841 sec->has_tls_reloc = 1;
4842 }
4843 else if (htab->tls_get_addr_fd == NULL
0112cd26 4844 && CONST_STRNEQ (h->root.root.string, "__tls_get_addr")
8387904d
AM		 4845 && (h->root.root.string[14] == 0
4846 || h->root.root.string[14] == '@'))
4847 {
4848 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h;
411e1bfb
AM		 4849 sec->has_tls_reloc = 1;
4850 }
4851 }
4852 break;
4853
4854 case R_PPC64_TPREL64:
4855 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
1d483afe 4856 if (!info->executable)
411e1bfb
AM		 4857 info->flags |= DF_STATIC_TLS;
4858 goto dotlstoc;
4859
4860 case R_PPC64_DTPMOD64:
4861 if (rel + 1 < rel_end
4862 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
4863 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 4864 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 4865 else
951fd09b 4866 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 4867 goto dotlstoc;
4868
4869 case R_PPC64_DTPREL64:
4870 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
4871 if (rel != relocs
4872 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
4873 && rel[-1].r_offset == rel->r_offset - 8)
4874 /* This is the second reloc of a dtpmod, dtprel pair.
4875 Don't mark with TLS_DTPREL. */
4876 goto dodyn;
4877
4878 dotlstoc:
4879 sec->has_tls_reloc = 1;
4880 if (h != NULL)
4881 {
4882 struct ppc_link_hash_entry *eh;
4883 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 4884 eh->tls_mask |= tls_type;
411e1bfb
AM		 4885 }
4886 else
4887 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
4888 rel->r_addend, tls_type))
4889 return FALSE;
4890
7c8fe5c4
AM		 4891 ppc64_sec = ppc64_elf_section_data (sec);
4892 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 4893 {
e7b938ca 4894 /* One extra to simplify get_tls_mask. */
eea6121a 4895 bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1;
7c8fe5c4
AM		 4896 ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt);
4897 if (ppc64_sec->u.t_symndx == NULL)
411e1bfb 4898 return FALSE;
7c8fe5c4
AM		 4899 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
4900 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 4901 }
4902 BFD_ASSERT (rel->r_offset % 8 == 0);
7c8fe5c4 4903 ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx;
951fd09b
AM		 4904
4905 /* Mark the second slot of a GD or LD entry.
4906 -1 to indicate GD and -2 to indicate LD. */
4907 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
7c8fe5c4 4908 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 4909 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
7c8fe5c4 4910 ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 4911 goto dodyn;
4912
4913 case R_PPC64_TPREL16:
4914 case R_PPC64_TPREL16_LO:
4915 case R_PPC64_TPREL16_HI:
4916 case R_PPC64_TPREL16_HA:
4917 case R_PPC64_TPREL16_DS:
4918 case R_PPC64_TPREL16_LO_DS:
4919 case R_PPC64_TPREL16_HIGHER:
4920 case R_PPC64_TPREL16_HIGHERA:
4921 case R_PPC64_TPREL16_HIGHEST:
4922 case R_PPC64_TPREL16_HIGHESTA:
4923 if (info->shared)
4924 {
1d483afe
AM		 4925 if (!info->executable)
4926 info->flags |= DF_STATIC_TLS;
411e1bfb 4927 goto dodyn;
5d1634d7
AM		 4928 }
4929 break;
4930
e86ce104 4931 case R_PPC64_ADDR64:
1e2f5b6e 4932 if (opd_sym_map != NULL
1e2f5b6e 4933 && rel + 1 < rel_end
4ce794b7 4934 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 4935 {
8387904d
AM		 4936 if (h != NULL)
4937 {
4938 if (h->root.root.string[0] == '.'
4939 && h->root.root.string[1] != 0
4940 && get_fdh ((struct ppc_link_hash_entry *) h, htab))
4941 ;
4942 else
4943 ((struct ppc_link_hash_entry *) h)->is_func = 1;
4944 }
4945 else
4946 {
4947 asection *s;
1e2f5b6e 4948
8387904d
AM		 4949 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
4950 r_symndx);
4951 if (s == NULL)
4952 return FALSE;
4953 else if (s != sec)
3f764659 4954 opd_sym_map[rel->r_offset / 8] = s;
8387904d 4955 }
1e2f5b6e 4956 }
e86ce104
AM		 4957 /* Fall through. */
4958
04c9666a 4959 case R_PPC64_REL30:
5bd4f169 4960 case R_PPC64_REL32:
04c9666a 4961 case R_PPC64_REL64:
65f38f15
AM		 4962 case R_PPC64_ADDR14:
4963 case R_PPC64_ADDR14_BRNTAKEN:
4964 case R_PPC64_ADDR14_BRTAKEN:
4965 case R_PPC64_ADDR16:
4966 case R_PPC64_ADDR16_DS:
4967 case R_PPC64_ADDR16_HA:
4968 case R_PPC64_ADDR16_HI:
4969 case R_PPC64_ADDR16_HIGHER:
4970 case R_PPC64_ADDR16_HIGHERA:
4971 case R_PPC64_ADDR16_HIGHEST:
4972 case R_PPC64_ADDR16_HIGHESTA:
4973 case R_PPC64_ADDR16_LO:
4974 case R_PPC64_ADDR16_LO_DS:
4975 case R_PPC64_ADDR24:
65f38f15 4976 case R_PPC64_ADDR32:
65f38f15
AM		 4977 case R_PPC64_UADDR16:
4978 case R_PPC64_UADDR32:
4979 case R_PPC64_UADDR64:
5bd4f169 4980 case R_PPC64_TOC:
81848ca0
AM		 4981 if (h != NULL && !info->shared)
4982 /* We may need a copy reloc. */
f5385ebf 4983 h->non_got_ref = 1;
81848ca0 4984
41bd81ab 4985 /* Don't propagate .opd relocs. */
1e2f5b6e 4986 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 4987 break;
e86ce104 4988
65f38f15
AM		 4989 /* If we are creating a shared library, and this is a reloc
4990 against a global symbol, or a non PC relative reloc
4991 against a local symbol, then we need to copy the reloc
4992 into the shared library. However, if we are linking with
4993 -Bsymbolic, we do not need to copy a reloc against a
4994 global symbol which is defined in an object we are
4995 including in the link (i.e., DEF_REGULAR is set). At
4996 this point we have not seen all the input files, so it is
4997 possible that DEF_REGULAR is not set now but will be set
4998 later (it is never cleared). In case of a weak definition,
4999 DEF_REGULAR may be cleared later by a strong definition in
5000 a shared library. We account for that possibility below by
f4656909 5001 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5002 table entry. A similar situation occurs when creating
5003 shared libraries and symbol visibility changes render the
5004 symbol local.
5005
5006 If on the other hand, we are creating an executable, we
5007 may need to keep relocations for symbols satisfied by a
5008 dynamic library if we manage to avoid copy relocs for the
5009 symbol. */
411e1bfb 5010 dodyn:
65f38f15 5011 if ((info->shared
1d483afe 5012 && (must_be_dyn_reloc (info, r_type)
65f38f15
AM		 5013 || (h != NULL
5014 && (! info->symbolic
5015 || h->root.type == bfd_link_hash_defweak
f5385ebf 5016 || !h->def_regular))))
f4656909
AM		 5017 || (ELIMINATE_COPY_RELOCS
5018 && !info->shared
65f38f15
AM		 5019 && h != NULL
5020 && (h->root.type == bfd_link_hash_defweak
f5385ebf 5021 || !h->def_regular)))
5bd4f169 5022 {
ec338859
AM		 5023 struct ppc_dyn_relocs *p;
5024 struct ppc_dyn_relocs **head;
5025
65f38f15
AM		 5026 /* We must copy these reloc types into the output file.
5027 Create a reloc section in dynobj and make room for
5028 this reloc. */
5bd4f169
AM		 5029 if (sreloc == NULL)
5030 {
83bac4b0
NC		 5031 sreloc = _bfd_elf_make_dynamic_reloc_section
5032 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5033
5bd4f169 5034 if (sreloc == NULL)
83bac4b0 5035 return FALSE;
5bd4f169
AM		 5036 }
5037
65f38f15
AM		 5038 /* If this is a global symbol, we count the number of
5039 relocations we need for this symbol. */
5040 if (h != NULL)
5041 {
ec338859 5042 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM		 5043 }
5044 else
5045 {
ec338859
AM		 5046 /* Track dynamic relocs needed for local syms too.
5047 We really need local syms available to do this
5048 easily. Oh well. */
5049
5050 asection *s;
6edfbbad
DJ		 5051 void *vpp;
5052
ec338859
AM		 5053 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
5054 sec, r_symndx);
5055 if (s == NULL)
b34976b6 5056 return FALSE;
ec338859 5057
6edfbbad
DJ		 5058 vpp = &elf_section_data (s)->local_dynrel;
5059 head = (struct ppc_dyn_relocs **) vpp;
65f38f15 5060 }
ec338859
AM		 5061
5062 p = *head;
5063 if (p == NULL || p->sec != sec)
5064 {
4ce794b7 5065 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 5066 if (p == NULL)
b34976b6 5067 return FALSE;
ec338859
AM		 5068 p->next = *head;
5069 *head = p;
5070 p->sec = sec;
5071 p->count = 0;
5072 p->pc_count = 0;
5073 }
5074
5075 p->count += 1;
1d483afe 5076 if (!must_be_dyn_reloc (info, r_type))
ec338859 5077 p->pc_count += 1;
65f38f15 5078 }
5bd4f169 5079 break;
65f38f15
AM		 5080
5081 default:
96e0dda4 5082 break;
5bd4f169
AM		 5083 }
5084 }
5085
b34976b6 5086 return TRUE;
5bd4f169
AM		 5087}
5088
8387904d
AM		 5089/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5090 of the code entry point, and its section. */
5091
5092static bfd_vma
5093opd_entry_value (asection *opd_sec,
5094 bfd_vma offset,
5095 asection **code_sec,
5096 bfd_vma *code_off)
5097{
5098 bfd *opd_bfd = opd_sec->owner;
8860955f 5099 Elf_Internal_Rela *relocs;
8387904d 5100 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5101 bfd_vma val;
8387904d 5102
4b85d634
AM		 5103 /* No relocs implies we are linking a --just-symbols object. */
5104 if (opd_sec->reloc_count == 0)
5105 {
5106 bfd_vma val;
5107
5108 if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8))
5109 return (bfd_vma) -1;
3b36f7e6 5110
4b85d634
AM		 5111 if (code_sec != NULL)
5112 {
5113 asection *sec, *likely = NULL;
5114 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5115 if (sec->vma <= val
5116 && (sec->flags & SEC_LOAD) != 0
5117 && (sec->flags & SEC_ALLOC) != 0)
5118 likely = sec;
5119 if (likely != NULL)
5120 {
5121 *code_sec = likely;
5122 if (code_off != NULL)
5123 *code_off = val - likely->vma;
5124 }
5125 }
5126 return val;
5127 }
5128
0c8d6e5c 5129 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5130
8860955f
AM		 5131 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5132 if (relocs == NULL)
5133 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5134
8387904d 5135 /* Go find the opd reloc at the sym address. */
8860955f 5136 lo = relocs;
8387904d
AM		 5137 BFD_ASSERT (lo != NULL);
5138 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5139 val = (bfd_vma) -1;
8387904d
AM		 5140 while (lo < hi)
5141 {
5142 look = lo + (hi - lo) / 2;
5143 if (look->r_offset < offset)
5144 lo = look + 1;
5145 else if (look->r_offset > offset)
5146 hi = look;
5147 else
5148 {
0ffa91dd
NC		 5149 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5150
8387904d
AM		 5151 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5152 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5153 {
5154 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5155 asection *sec;
5156
5157 if (symndx < symtab_hdr->sh_info)
5158 {
5159 Elf_Internal_Sym *sym;
5160
5161 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5162 if (sym == NULL)
5163 {
5164 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
5165 symtab_hdr->sh_info,
5166 0, NULL, NULL, NULL);
5167 if (sym == NULL)
645ea6a9 5168 break;
8387904d
AM		 5169 symtab_hdr->contents = (bfd_byte *) sym;
5170 }
5171
5172 sym += symndx;
5173 val = sym->st_value;
cb33740c 5174 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM		 5175 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5176 }
5177 else
5178 {
5179 struct elf_link_hash_entry **sym_hashes;
5180 struct elf_link_hash_entry *rh;
5181
5182 sym_hashes = elf_sym_hashes (opd_bfd);
5183 rh = sym_hashes[symndx - symtab_hdr->sh_info];
5184 while (rh->root.type == bfd_link_hash_indirect
5185 || rh->root.type == bfd_link_hash_warning)
5186 rh = ((struct elf_link_hash_entry *) rh->root.u.i.link);
5187 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5188 || rh->root.type == bfd_link_hash_defweak);
5189 val = rh->root.u.def.value;
5190 sec = rh->root.u.def.section;
5191 }
5192 val += look->r_addend;
5193 if (code_off != NULL)
5194 *code_off = val;
5195 if (code_sec != NULL)
5196 *code_sec = sec;
5197 if (sec != NULL && sec->output_section != NULL)
5198 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 5199 }
5200 break;
5201 }
5202 }
645ea6a9 5203
645ea6a9 5204 return val;
8387904d
AM		 5205}
5206
74f0fb50
AM		 5207/* Mark all our entry sym sections, both opd and code section. */
5208
5209static void
5210ppc64_elf_gc_keep (struct bfd_link_info *info)
5211{
5212 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5213 struct bfd_sym_chain *sym;
5214
5215 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5216 {
5217 struct ppc_link_hash_entry *eh;
5218 asection *sec;
5219
5220 eh = (struct ppc_link_hash_entry *)
5221 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE);
5222 if (eh == NULL)
5223 continue;
5224 if (eh->elf.root.type != bfd_link_hash_defined
5225 && eh->elf.root.type != bfd_link_hash_defweak)
5226 continue;
5227
5228 if (eh->is_func_descriptor
5229 && (eh->oh->elf.root.type == bfd_link_hash_defined
5230 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5231 {
5232 sec = eh->oh->elf.root.u.def.section;
5233 sec->flags |= SEC_KEEP;
5234 }
5235 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5236 && opd_entry_value (eh->elf.root.u.def.section,
5237 eh->elf.root.u.def.value,
5238 &sec, NULL) != (bfd_vma) -1)
5239 sec->flags |= SEC_KEEP;
5240
5241 sec = eh->elf.root.u.def.section;
5242 sec->flags |= SEC_KEEP;
5243 }
5244}
5245
64d03ab5
AM		 5246/* Mark sections containing dynamically referenced symbols. When
5247 building shared libraries, we must assume that any visible symbol is
5248 referenced. */
5249
5250static bfd_boolean
5251ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5252{
5253 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5254 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
5255
5256 if (eh->elf.root.type == bfd_link_hash_warning)
5257 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
5258
5259 /* Dynamic linking info is on the func descriptor sym. */
5260 if (eh->oh != NULL
5261 && eh->oh->is_func_descriptor
5262 && (eh->oh->elf.root.type == bfd_link_hash_defined
5263 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5264 eh = eh->oh;
5265
5266 if ((eh->elf.root.type == bfd_link_hash_defined
5267 || eh->elf.root.type == bfd_link_hash_defweak)
5268 && (eh->elf.ref_dynamic
5269 || (!info->executable
5270 && eh->elf.def_regular
5271 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
5272 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN)))
5273 {
5274 asection *code_sec;
5275
5276 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5277
5278 /* Function descriptor syms cause the associated
5279 function code sym section to be marked. */
5280 if (eh->is_func_descriptor
5281 && (eh->oh->elf.root.type == bfd_link_hash_defined
5282 || eh->oh->elf.root.type == bfd_link_hash_defweak))
5283 eh->oh->elf.root.u.def.section->flags |= SEC_KEEP;
5284 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5285 && opd_entry_value (eh->elf.root.u.def.section,
5286 eh->elf.root.u.def.value,
5287 &code_sec, NULL) != (bfd_vma) -1)
5288 code_sec->flags |= SEC_KEEP;
5289 }
5290
5291 return TRUE;
5292}
5293
5bd4f169
AM		 5294/* Return the section that should be marked against GC for a given
5295 relocation. */
5296
5297static asection *
4ce794b7 5298ppc64_elf_gc_mark_hook (asection *sec,
74f0fb50 5299 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4ce794b7
AM		 5300 Elf_Internal_Rela *rel,
5301 struct elf_link_hash_entry *h,
5302 Elf_Internal_Sym *sym)
5bd4f169 5303{
ccfa59ea
AM		 5304 asection *rsec;
5305
ccfa59ea
AM		 5306 /* Syms return NULL if we're marking .opd, so we avoid marking all
5307 function sections, as all functions are referenced in .opd. */
5308 rsec = NULL;
5309 if (get_opd_info (sec) != NULL)
5310 return rsec;
1e2f5b6e 5311
5bd4f169
AM		 5312 if (h != NULL)
5313 {
04c9666a 5314 enum elf_ppc64_reloc_type r_type;
ccfa59ea 5315 struct ppc_link_hash_entry *eh;
a33d1f77 5316
4ce794b7 5317 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5318 switch (r_type)
5bd4f169
AM		 5319 {
5320 case R_PPC64_GNU_VTINHERIT:
5321 case R_PPC64_GNU_VTENTRY:
5322 break;
5323
5324 default:
5325 switch (h->root.type)
5326 {
5327 case bfd_link_hash_defined:
5328 case bfd_link_hash_defweak:
ccfa59ea 5329 eh = (struct ppc_link_hash_entry *) h;
c4f68ce3
AM		 5330 if (eh->oh != NULL
5331 && eh->oh->is_func_descriptor
5332 && (eh->oh->elf.root.type == bfd_link_hash_defined
5333 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea 5334 eh = eh->oh;
1e2f5b6e
AM		 5335
5336 /* Function descriptor syms cause the associated
5337 function code sym section to be marked. */
c4f68ce3
AM		 5338 if (eh->is_func_descriptor
5339 && (eh->oh->elf.root.type == bfd_link_hash_defined
5340 || eh->oh->elf.root.type == bfd_link_hash_defweak))
ccfa59ea
AM		 5341 {
5342 /* They also mark their opd section. */
74f0fb50 5343 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea
AM		 5344
5345 rsec = eh->oh->elf.root.u.def.section;
5346 }
8387904d
AM		 5347 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5348 && opd_entry_value (eh->elf.root.u.def.section,
5349 eh->elf.root.u.def.value,
5350 &rsec, NULL) != (bfd_vma) -1)
74f0fb50 5351 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5352 else
1e2f5b6e
AM		 5353 rsec = h->root.u.def.section;
5354 break;
5bd4f169
AM		 5355
5356 case bfd_link_hash_common:
1e2f5b6e
AM		 5357 rsec = h->root.u.c.p->section;
5358 break;
5bd4f169
AM		 5359
5360 default:
5361 break;
5362 }
5363 }
5364 }
5365 else
5366 {
74f0fb50 5367 struct _opd_sec_data *opd;
1e2f5b6e
AM		 5368
5369 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 5370 opd = get_opd_info (rsec);
5371 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5372 {
74f0fb50 5373 rsec->gc_mark = 1;
ccfa59ea 5374
74f0fb50 5375 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5376 }
5bd4f169
AM		 5377 }
5378
1e2f5b6e 5379 return rsec;
5bd4f169
AM		 5380}
5381
65f38f15
AM		 5382/* Update the .got, .plt. and dynamic reloc reference counts for the
5383 section being removed. */
5bd4f169 5384
b34976b6 5385static bfd_boolean
4ce794b7
AM		 5386ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5387 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5388{
411e1bfb 5389 struct ppc_link_hash_table *htab;
5bd4f169
AM		 5390 Elf_Internal_Shdr *symtab_hdr;
5391 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5392 struct got_entry **local_got_ents;
5bd4f169 5393 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5394
7dda2462
TG		 5395 if (info->relocatable)
5396 return TRUE;
5397
680a3378
AM		 5398 if ((sec->flags & SEC_ALLOC) == 0)
5399 return TRUE;
5400
ec338859
AM		 5401 elf_section_data (sec)->local_dynrel = NULL;
5402
411e1bfb 5403 htab = ppc_hash_table (info);
0ffa91dd 5404 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5405 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5406 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 5407
5408 relend = relocs + sec->reloc_count;
5409 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 5410 {
5411 unsigned long r_symndx;
04c9666a 5412 enum elf_ppc64_reloc_type r_type;
58ac9f71 5413 struct elf_link_hash_entry *h = NULL;
411e1bfb 5414 char tls_type = 0;
5bd4f169 5415
a33d1f77 5416 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5417 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 5418 if (r_symndx >= symtab_hdr->sh_info)
5419 {
5420 struct ppc_link_hash_entry *eh;
5421 struct ppc_dyn_relocs **pp;
5422 struct ppc_dyn_relocs *p;
5423
5424 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM		 5425 while (h->root.type == bfd_link_hash_indirect
5426 || h->root.type == bfd_link_hash_warning)
5427 h = (struct elf_link_hash_entry *) h->root.u.i.link;
58ac9f71
AM		 5428 eh = (struct ppc_link_hash_entry *) h;
5429
5430 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5431 if (p->sec == sec)
5432 {
5433 /* Everything must go for SEC. */
5434 *pp = p->next;
5435 break;
5436 }
5437 }
5438
a33d1f77
AM		 5439 switch (r_type)
5440 {
411e1bfb
AM		 5441 case R_PPC64_GOT_TLSLD16:
5442 case R_PPC64_GOT_TLSLD16_LO:
5443 case R_PPC64_GOT_TLSLD16_HI:
5444 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5445 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5446 goto dogot;
5447
5448 case R_PPC64_GOT_TLSGD16:
5449 case R_PPC64_GOT_TLSGD16_LO:
5450 case R_PPC64_GOT_TLSGD16_HI:
5451 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5452 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5453 goto dogot;
5454
5455 case R_PPC64_GOT_TPREL16_DS:
5456 case R_PPC64_GOT_TPREL16_LO_DS:
5457 case R_PPC64_GOT_TPREL16_HI:
5458 case R_PPC64_GOT_TPREL16_HA:
5459 tls_type = TLS_TLS | TLS_TPREL;
5460 goto dogot;
5461
5462 case R_PPC64_GOT_DTPREL16_DS:
5463 case R_PPC64_GOT_DTPREL16_LO_DS:
5464 case R_PPC64_GOT_DTPREL16_HI:
5465 case R_PPC64_GOT_DTPREL16_HA:
5466 tls_type = TLS_TLS | TLS_DTPREL;
5467 goto dogot;
5468
a33d1f77
AM		 5469 case R_PPC64_GOT16:
5470 case R_PPC64_GOT16_DS:
5471 case R_PPC64_GOT16_HA:
5472 case R_PPC64_GOT16_HI:
5473 case R_PPC64_GOT16_LO:
5474 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 5475 dogot:
5476 {
5477 struct got_entry *ent;
5478
58ac9f71
AM		 5479 if (h != NULL)
5480 ent = h->got.glist;
411e1bfb
AM		 5481 else
5482 ent = local_got_ents[r_symndx];
5483
5484 for (; ent != NULL; ent = ent->next)
5485 if (ent->addend == rel->r_addend
e717da7e 5486 && ent->owner == abfd
411e1bfb
AM		 5487 && ent->tls_type == tls_type)
5488 break;
5489 if (ent == NULL)
5490 abort ();
5491 if (ent->got.refcount > 0)
5492 ent->got.refcount -= 1;
5493 }
a33d1f77 5494 break;
65f38f15 5495
a33d1f77
AM		 5496 case R_PPC64_PLT16_HA:
5497 case R_PPC64_PLT16_HI:
5498 case R_PPC64_PLT16_LO:
5499 case R_PPC64_PLT32:
5500 case R_PPC64_PLT64:
721956f4
AM		 5501 case R_PPC64_REL14:
5502 case R_PPC64_REL14_BRNTAKEN:
5503 case R_PPC64_REL14_BRTAKEN:
5d1634d7 5504 case R_PPC64_REL24:
58ac9f71 5505 if (h != NULL)
5d1634d7 5506 {
411e1bfb
AM		 5507 struct plt_entry *ent;
5508
411e1bfb
AM		 5509 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5510 if (ent->addend == rel->r_addend)
5511 break;
5512 if (ent == NULL)
5513 abort ();
5514 if (ent->plt.refcount > 0)
5515 ent->plt.refcount -= 1;
5d1634d7 5516 }
e86ce104 5517 break;
5d1634d7 5518
a33d1f77
AM		 5519 default:
5520 break;
5521 }
5522 }
b34976b6 5523 return TRUE;
5bd4f169
AM		 5524}
5525
deb0e272
AM		 5526/* The maximum size of .sfpr. */
5527#define SFPR_MAX (218*4)
5528
5529struct sfpr_def_parms
5530{
699733f6
AM		 5531 const char name[12];
5532 unsigned char lo, hi;
deb0e272
AM		 5533 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
5534 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
5535};
5536
5537/* Auto-generate _save*, _rest* functions in .sfpr. */
5538
5539static unsigned int
5540sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
5541{
5542 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5543 unsigned int i;
5544 size_t len = strlen (parm->name);
5545 bfd_boolean writing = FALSE;
699733f6 5546 char sym[16];
deb0e272
AM		 5547
5548 memcpy (sym, parm->name, len);
5549 sym[len + 2] = 0;
5550
5551 for (i = parm->lo; i <= parm->hi; i++)
5552 {
5553 struct elf_link_hash_entry *h;
5554
5555 sym[len + 0] = i / 10 + '0';
5556 sym[len + 1] = i % 10 + '0';
5557 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
5558 if (h != NULL
f5385ebf 5559 && !h->def_regular)
deb0e272
AM		 5560 {
5561 h->root.type = bfd_link_hash_defined;
5562 h->root.u.def.section = htab->sfpr;
5563 h->root.u.def.value = htab->sfpr->size;
5564 h->type = STT_FUNC;
f5385ebf 5565 h->def_regular = 1;
deb0e272
AM		 5566 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
5567 writing = TRUE;
5568 if (htab->sfpr->contents == NULL)
5569 {
5570 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
5571 if (htab->sfpr->contents == NULL)
5572 return FALSE;
5573 }
5574 }
5575 if (writing)
5576 {
5577 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
5578 if (i != parm->hi)
5579 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
5580 else
5581 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
5582 htab->sfpr->size = p - htab->sfpr->contents;
5583 }
5584 }
5585
5586 return TRUE;
5587}
5588
5589static bfd_byte *
5590savegpr0 (bfd *abfd, bfd_byte *p, int r)
5591{
5592 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5593 return p + 4;
5594}
5595
5596static bfd_byte *
5597savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
5598{
5599 p = savegpr0 (abfd, p, r);
5600 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5601 p = p + 4;
5602 bfd_put_32 (abfd, BLR, p);
5603 return p + 4;
5604}
5605
5606static bfd_byte *
5607restgpr0 (bfd *abfd, bfd_byte *p, int r)
5608{
5609 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5610 return p + 4;
5611}
5612
5613static bfd_byte *
5614restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
5615{
5616 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5617 p = p + 4;
5618 p = restgpr0 (abfd, p, r);
5619 bfd_put_32 (abfd, MTLR_R0, p);
5620 p = p + 4;
5621 if (r == 29)
5622 {
5623 p = restgpr0 (abfd, p, 30);
5624 p = restgpr0 (abfd, p, 31);
5625 }
5626 bfd_put_32 (abfd, BLR, p);
5627 return p + 4;
5628}
5629
5630static bfd_byte *
5631savegpr1 (bfd *abfd, bfd_byte *p, int r)
5632{
5633 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5634 return p + 4;
5635}
5636
5637static bfd_byte *
5638savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
5639{
5640 p = savegpr1 (abfd, p, r);
5641 bfd_put_32 (abfd, BLR, p);
5642 return p + 4;
5643}
5644
5645static bfd_byte *
5646restgpr1 (bfd *abfd, bfd_byte *p, int r)
5647{
5648 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5649 return p + 4;
5650}
5651
5652static bfd_byte *
5653restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
5654{
5655 p = restgpr1 (abfd, p, r);
5656 bfd_put_32 (abfd, BLR, p);
5657 return p + 4;
5658}
5659
5660static bfd_byte *
5661savefpr (bfd *abfd, bfd_byte *p, int r)
5662{
5663 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5664 return p + 4;
5665}
5666
5667static bfd_byte *
5668savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
5669{
5670 p = savefpr (abfd, p, r);
5671 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
5672 p = p + 4;
5673 bfd_put_32 (abfd, BLR, p);
5674 return p + 4;
5675}
5676
5677static bfd_byte *
5678restfpr (bfd *abfd, bfd_byte *p, int r)
5679{
5680 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
5681 return p + 4;
5682}
5683
5684static bfd_byte *
5685restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
5686{
5687 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
5688 p = p + 4;
5689 p = restfpr (abfd, p, r);
5690 bfd_put_32 (abfd, MTLR_R0, p);
5691 p = p + 4;
5692 if (r == 29)
5693 {
5694 p = restfpr (abfd, p, 30);
5695 p = restfpr (abfd, p, 31);
5696 }
5697 bfd_put_32 (abfd, BLR, p);
5698 return p + 4;
5699}
5700
5701static bfd_byte *
5702savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
5703{
5704 p = savefpr (abfd, p, r);
5705 bfd_put_32 (abfd, BLR, p);
5706 return p + 4;
5707}
5708
5709static bfd_byte *
5710restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
5711{
5712 p = restfpr (abfd, p, r);
5713 bfd_put_32 (abfd, BLR, p);
5714 return p + 4;
5715}
5716
5717static bfd_byte *
5718savevr (bfd *abfd, bfd_byte *p, int r)
5719{
5720 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5721 p = p + 4;
5722 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
5723 return p + 4;
5724}
5725
5726static bfd_byte *
5727savevr_tail (bfd *abfd, bfd_byte *p, int r)
5728{
5729 p = savevr (abfd, p, r);
5730 bfd_put_32 (abfd, BLR, p);
5731 return p + 4;
5732}
5733
5734static bfd_byte *
5735restvr (bfd *abfd, bfd_byte *p, int r)
5736{
5737 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
5738 p = p + 4;
5739 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
5740 return p + 4;
5741}
5742
5743static bfd_byte *
5744restvr_tail (bfd *abfd, bfd_byte *p, int r)
5745{
5746 p = restvr (abfd, p, r);
5747 bfd_put_32 (abfd, BLR, p);
5748 return p + 4;
5749}
5750
e86ce104
AM		 5751/* Called via elf_link_hash_traverse to transfer dynamic linking
5752 information on function code symbol entries to their corresponding
5753 function descriptor symbol entries. */
deb0e272 5754
b34976b6 5755static bfd_boolean
4ce794b7 5756func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 5757{
e86ce104 5758 struct bfd_link_info *info;
65f38f15 5759 struct ppc_link_hash_table *htab;
411e1bfb 5760 struct plt_entry *ent;
50bc7936
AM		 5761 struct ppc_link_hash_entry *fh;
5762 struct ppc_link_hash_entry *fdh;
5763 bfd_boolean force_local;
5bd4f169 5764
50bc7936
AM		 5765 fh = (struct ppc_link_hash_entry *) h;
5766 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 5767 return TRUE;
e86ce104 5768
50bc7936
AM		 5769 if (fh->elf.root.type == bfd_link_hash_warning)
5770 fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link;
e92d460e 5771
4ce794b7 5772 info = inf;
65f38f15 5773 htab = ppc_hash_table (info);
5bd4f169 5774
c09bdfe5
AM		 5775 /* Resolve undefined references to dot-symbols as the value
5776 in the function descriptor, if we have one in a regular object.
5777 This is to satisfy cases like ".quad .foo". Calls to functions
5778 in dynamic objects are handled elsewhere. */
5779 if (fh->elf.root.type == bfd_link_hash_undefweak
5780 && fh->was_undefined
5781 && (fh->oh->elf.root.type == bfd_link_hash_defined
5782 || fh->oh->elf.root.type == bfd_link_hash_defweak)
5783 && get_opd_info (fh->oh->elf.root.u.def.section) != NULL
5784 && opd_entry_value (fh->oh->elf.root.u.def.section,
5785 fh->oh->elf.root.u.def.value,
5786 &fh->elf.root.u.def.section,
5787 &fh->elf.root.u.def.value) != (bfd_vma) -1)
5788 {
5789 fh->elf.root.type = fh->oh->elf.root.type;
f5385ebf 5790 fh->elf.forced_local = 1;
2b953679
AM		 5791 fh->elf.def_regular = fh->oh->elf.def_regular;
5792 fh->elf.def_dynamic = fh->oh->elf.def_dynamic;
c09bdfe5
AM		 5793 }
5794
e86ce104
AM		 5795 /* If this is a function code symbol, transfer dynamic linking
5796 information to the function descriptor symbol. */
50bc7936 5797 if (!fh->is_func)
b34976b6 5798 return TRUE;
e86ce104 5799
50bc7936 5800 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5801 if (ent->plt.refcount > 0)
5802 break;
50bc7936
AM		 5803 if (ent == NULL
5804 || fh->elf.root.root.string[0] != '.'
5805 || fh->elf.root.root.string[1] == '\0')
5806 return TRUE;
5bd4f169 5807
50bc7936
AM		 5808 /* Find the corresponding function descriptor symbol. Create it
5809 as undefined if necessary. */
5bd4f169 5810
50bc7936
AM		 5811 fdh = get_fdh (fh, htab);
5812 if (fdh != NULL)
5813 while (fdh->elf.root.type == bfd_link_hash_indirect
5814 || fdh->elf.root.type == bfd_link_hash_warning)
5815 fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link;
5bd4f169 5816
50bc7936 5817 if (fdh == NULL
df131623 5818 && !info->executable
50bc7936
AM		 5819 && (fh->elf.root.type == bfd_link_hash_undefined
5820 || fh->elf.root.type == bfd_link_hash_undefweak))
5821 {
908b32fc 5822 fdh = make_fdh (info, fh);
bb700d78
AM		 5823 if (fdh == NULL)
5824 return FALSE;
50bc7936 5825 }
648cca2c 5826
908b32fc 5827 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 5828 code symbol is strong undefined, make the fake sym the same.
5829 If the function code symbol is defined, then force the fake
5830 descriptor local; We can't support overriding of symbols in a
5831 shared library on a fake descriptor. */
908b32fc
AM		 5832
5833 if (fdh != NULL
5834 && fdh->fake
433817dd 5835 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 5836 {
433817dd
AM		 5837 if (fh->elf.root.type == bfd_link_hash_undefined)
5838 {
5839 fdh->elf.root.type = bfd_link_hash_undefined;
5840 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
5841 }
5842 else if (fh->elf.root.type == bfd_link_hash_defined
5843 || fh->elf.root.type == bfd_link_hash_defweak)
5844 {
5845 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
5846 }
908b32fc
AM		 5847 }
5848
50bc7936 5849 if (fdh != NULL
f5385ebf 5850 && !fdh->elf.forced_local
df131623 5851 && (!info->executable
f5385ebf
AM		 5852 || fdh->elf.def_dynamic
5853 || fdh->elf.ref_dynamic
50bc7936
AM		 5854 || (fdh->elf.root.type == bfd_link_hash_undefweak
5855 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
5856 {
5857 if (fdh->elf.dynindx == -1)
c152c796 5858 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 5859 return FALSE;
f5385ebf
AM		 5860 fdh->elf.ref_regular |= fh->elf.ref_regular;
5861 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
5862 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
5863 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 5864 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 5865 {
40d16e0b 5866 move_plt_plist (fh, fdh);
f5385ebf 5867 fdh->elf.needs_plt = 1;
e86ce104 5868 }
50bc7936 5869 fdh->is_func_descriptor = 1;
34814b9f
AM		 5870 fdh->oh = fh;
5871 fh->oh = fdh;
e86ce104
AM		 5872 }
5873
50bc7936
AM		 5874 /* Now that the info is on the function descriptor, clear the
5875 function code sym info. Any function code syms for which we
5876 don't have a definition in a regular file, we force local.
5877 This prevents a shared library from exporting syms that have
5878 been imported from another library. Function code syms that
5879 are really in the library we must leave global to prevent the
5880 linker dragging in a definition from a static library. */
93f3fa99
AM		 5881 force_local = (!fh->elf.def_regular
5882 || fdh == NULL
5883 || !fdh->elf.def_regular
5884 || fdh->elf.forced_local);
50bc7936
AM		 5885 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
5886
b34976b6 5887 return TRUE;
e86ce104 5888}
40b8271b 5889
e86ce104 5890/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 5891 this hook to a) provide some gcc support functions, and b) transfer
5892 dynamic linking information gathered so far on function code symbol
5893 entries, to their corresponding function descriptor symbol entries. */
deb0e272 5894
b34976b6 5895static bfd_boolean
4ce794b7
AM		 5896ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
5897 struct bfd_link_info *info)
e86ce104
AM		 5898{
5899 struct ppc_link_hash_table *htab;
82bd7b59 5900 unsigned int i;
deb0e272
AM		 5901 const struct sfpr_def_parms funcs[] =
5902 {
5903 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
5904 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
5905 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
5906 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
5907 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
5908 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
5909 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
5910 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
5911 { "._savef", 14, 31, savefpr, savefpr1_tail },
5912 { "._restf", 14, 31, restfpr, restfpr1_tail },
5913 { "_savevr_", 20, 31, savevr, savevr_tail },
5914 { "_restvr_", 20, 31, restvr, restvr_tail }
5915 };
e86ce104
AM		 5916
5917 htab = ppc_hash_table (info);
82bd7b59
AM		 5918 if (htab->sfpr == NULL)
5919 /* We don't have any relocs. */
b34976b6 5920 return TRUE;
82bd7b59 5921
deb0e272
AM		 5922 /* Provide any missing _save* and _rest* functions. */
5923 htab->sfpr->size = 0;
5924 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
5925 if (!sfpr_define (info, &funcs[i]))
5926 return FALSE;
82bd7b59 5927
4ce794b7 5928 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 5929
eea6121a 5930 if (htab->sfpr->size == 0)
8423293d 5931 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 5932
b34976b6 5933 return TRUE;
e86ce104
AM		 5934}
5935
5936/* Adjust a symbol defined by a dynamic object and referenced by a
5937 regular object. The current definition is in some section of the
5938 dynamic object, but we're not including those sections. We have to
5939 change the definition to something the rest of the link can
5940 understand. */
5941
b34976b6 5942static bfd_boolean
4ce794b7
AM		 5943ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
5944 struct elf_link_hash_entry *h)
e86ce104
AM		 5945{
5946 struct ppc_link_hash_table *htab;
e86ce104 5947 asection *s;
e86ce104
AM		 5948
5949 htab = ppc_hash_table (info);
5950
5951 /* Deal with function syms. */
5952 if (h->type == STT_FUNC
f5385ebf 5953 || h->needs_plt)
e86ce104
AM		 5954 {
5955 /* Clear procedure linkage table information for any symbol that
5956 won't need a .plt entry. */
411e1bfb
AM		 5957 struct plt_entry *ent;
5958 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
5959 if (ent->plt.refcount > 0)
5960 break;
8387904d 5961 if (ent == NULL
9c7a29a3
AM		 5962 || SYMBOL_CALLS_LOCAL (info, h)
5963 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5964 && h->root.type == bfd_link_hash_undefweak))
40b8271b 5965 {
411e1bfb 5966 h->plt.plist = NULL;
f5385ebf 5967 h->needs_plt = 0;
40b8271b 5968 }
5bd4f169 5969 }
bbd7ec4a 5970 else
411e1bfb 5971 h->plt.plist = NULL;
5bd4f169
AM		 5972
5973 /* If this is a weak symbol, and there is a real definition, the
5974 processor independent code will have arranged for us to see the
5975 real definition first, and we can just use the same value. */
f6e332e6 5976 if (h->u.weakdef != NULL)
5bd4f169 5977 {
f6e332e6
AM		 5978 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5979 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5980 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5981 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 5982 if (ELIMINATE_COPY_RELOCS)
f6e332e6 5983 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 5984 return TRUE;
5bd4f169
AM		 5985 }
5986
5bd4f169
AM		 5987 /* If we are creating a shared library, we must presume that the
5988 only references to the symbol are via the global offset table.
5989 For such cases we need not do anything here; the relocations will
5990 be handled correctly by relocate_section. */
5991 if (info->shared)
b34976b6 5992 return TRUE;
5bd4f169 5993
65f38f15
AM		 5994 /* If there are no references to this symbol that do not use the
5995 GOT, we don't need to generate a copy reloc. */
f5385ebf 5996 if (!h->non_got_ref)
b34976b6 5997 return TRUE;
65f38f15 5998
b186458a
JJ		 5999 /* Don't generate a copy reloc for symbols defined in the executable. */
6000 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6001 return TRUE;
6002
f4656909 6003 if (ELIMINATE_COPY_RELOCS)
65f38f15 6004 {
f4656909
AM		 6005 struct ppc_link_hash_entry * eh;
6006 struct ppc_dyn_relocs *p;
65f38f15 6007
f4656909
AM		 6008 eh = (struct ppc_link_hash_entry *) h;
6009 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6010 {
6011 s = p->sec->output_section;
6012 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6013 break;
6014 }
6015
6016 /* If we didn't find any dynamic relocs in read-only sections, then
6017 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6018 if (p == NULL)
6019 {
f5385ebf 6020 h->non_got_ref = 0;
f4656909
AM		 6021 return TRUE;
6022 }
65f38f15
AM		 6023 }
6024
5d35169e 6025 if (h->plt.plist != NULL)
97b639ba
AM		 6026 {
6027 /* We should never get here, but unfortunately there are versions
6028 of gcc out there that improperly (for this ABI) put initialized
6029 function pointers, vtable refs and suchlike in read-only
6030 sections. Allow them to proceed, but warn that this might
6031 break at runtime. */
6032 (*_bfd_error_handler)
6033 (_("copy reloc against `%s' requires lazy plt linking; "
6034 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6035 h->root.root.string);
6036 }
5d35169e
AM		 6037
6038 /* This is a reference to a symbol defined by a dynamic object which
6039 is not a function. */
6040
909272ee
AM		 6041 if (h->size == 0)
6042 {
6043 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
6044 h->root.root.string);
6045 return TRUE;
6046 }
6047
5bd4f169
AM		 6048 /* We must allocate the symbol in our .dynbss section, which will
6049 become part of the .bss section of the executable. There will be
6050 an entry for this symbol in the .dynsym section. The dynamic
6051 object will contain position independent code, so all references
6052 from the dynamic object to this symbol will go through the global
6053 offset table. The dynamic linker will use the .dynsym entry to
6054 determine the address it must put in the global offset table, so
6055 both the dynamic object and the regular object will refer to the
6056 same memory location for the variable. */
5bd4f169 6057
04c9666a
AM		 6058 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6059 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 6060 runtime process image. We need to remember the offset into the
6061 .rela.bss section we are going to use. */
6062 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
6063 {
eea6121a 6064 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 6065 h->needs_copy = 1;
5bd4f169
AM		 6066 }
6067
4ce794b7 6068 s = htab->dynbss;
5bd4f169 6069
027297b7 6070 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 6071}
6072
e86ce104
AM		 6073/* If given a function descriptor symbol, hide both the function code
6074 sym and the descriptor. */
6075static void
4ce794b7
AM		 6076ppc64_elf_hide_symbol (struct bfd_link_info *info,
6077 struct elf_link_hash_entry *h,
6078 bfd_boolean force_local)
e86ce104 6079{
34814b9f 6080 struct ppc_link_hash_entry *eh;
e86ce104
AM		 6081 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6082
34814b9f
AM		 6083 eh = (struct ppc_link_hash_entry *) h;
6084 if (eh->is_func_descriptor)
e86ce104 6085 {
34814b9f 6086 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 6087
721956f4 6088 if (fh == NULL)
d1329ca3
AM		 6089 {
6090 const char *p, *q;
6091 struct ppc_link_hash_table *htab;
6092 char save;
6093
6094 /* We aren't supposed to use alloca in BFD because on
6095 systems which do not have alloca the version in libiberty
6096 calls xmalloc, which might cause the program to crash
6097 when it runs out of memory. This function doesn't have a
6098 return status, so there's no way to gracefully return an
6099 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 6100 accessed; It's either a string in an ELF string table,
6101 or allocated in an objalloc structure. */
d1329ca3 6102
34814b9f 6103 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 6104 save = *p;
6105 *(char *) p = '.';
6106 htab = ppc_hash_table (info);
34814b9f
AM		 6107 fh = (struct ppc_link_hash_entry *)
6108 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 6109 *(char *) p = save;
6110
6111 /* Unfortunately, if it so happens that the string we were
6112 looking for was allocated immediately before this string,
6113 then we overwrote the string terminator. That's the only
6114 reason the lookup should fail. */
6115 if (fh == NULL)
6116 {
34814b9f
AM		 6117 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6118 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 6119 --q, --p;
34814b9f
AM		 6120 if (q < eh->elf.root.root.string && *p == '.')
6121 fh = (struct ppc_link_hash_entry *)
6122 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 6123 }
6124 if (fh != NULL)
6125 {
34814b9f
AM		 6126 eh->oh = fh;
6127 fh->oh = eh;
d1329ca3
AM		 6128 }
6129 }
e86ce104 6130 if (fh != NULL)
34814b9f 6131 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 6132 }
6133}
6134
411e1bfb 6135static bfd_boolean
8843416a
AM		 6136get_sym_h (struct elf_link_hash_entry **hp,
6137 Elf_Internal_Sym **symp,
6138 asection **symsecp,
6139 char **tls_maskp,
6140 Elf_Internal_Sym **locsymsp,
6141 unsigned long r_symndx,
6142 bfd *ibfd)
411e1bfb 6143{
0ffa91dd 6144 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 6145
6146 if (r_symndx >= symtab_hdr->sh_info)
6147 {
6148 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6149 struct elf_link_hash_entry *h;
6150
6151 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6152 while (h->root.type == bfd_link_hash_indirect
6153 || h->root.type == bfd_link_hash_warning)
6154 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6155
6156 if (hp != NULL)
6157 *hp = h;
6158
6159 if (symp != NULL)
6160 *symp = NULL;
6161
6162 if (symsecp != NULL)
6163 {
6164 asection *symsec = NULL;
6165 if (h->root.type == bfd_link_hash_defined
6166 || h->root.type == bfd_link_hash_defweak)
6167 symsec = h->root.u.def.section;
6168 *symsecp = symsec;
6169 }
6170
e7b938ca 6171 if (tls_maskp != NULL)
411e1bfb
AM		 6172 {
6173 struct ppc_link_hash_entry *eh;
6174
6175 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6176 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 6177 }
6178 }
6179 else
6180 {
6181 Elf_Internal_Sym *sym;
6182 Elf_Internal_Sym *locsyms = *locsymsp;
6183
6184 if (locsyms == NULL)
6185 {
6186 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6187 if (locsyms == NULL)
6188 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6189 symtab_hdr->sh_info,
6190 0, NULL, NULL, NULL);
6191 if (locsyms == NULL)
6192 return FALSE;
6193 *locsymsp = locsyms;
6194 }
6195 sym = locsyms + r_symndx;
6196
6197 if (hp != NULL)
6198 *hp = NULL;
6199
6200 if (symp != NULL)
6201 *symp = sym;
6202
6203 if (symsecp != NULL)
cb33740c 6204 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 6205
e7b938ca 6206 if (tls_maskp != NULL)
411e1bfb
AM		 6207 {
6208 struct got_entry **lgot_ents;
e7b938ca 6209 char *tls_mask;
411e1bfb 6210
e7b938ca 6211 tls_mask = NULL;
411e1bfb
AM		 6212 lgot_ents = elf_local_got_ents (ibfd);
6213 if (lgot_ents != NULL)
6214 {
e7b938ca
AM		 6215 char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info);
6216 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6217 }
e7b938ca 6218 *tls_maskp = tls_mask;
411e1bfb
AM		 6219 }
6220 }
6221 return TRUE;
6222}
6223
e7b938ca 6224/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6225 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6226 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 6227
6228static int
0d4792f7
AM		 6229get_tls_mask (char **tls_maskp, unsigned long *toc_symndx,
6230 Elf_Internal_Sym **locsymsp,
4ce794b7 6231 const Elf_Internal_Rela *rel, bfd *ibfd)
411e1bfb
AM		 6232{
6233 unsigned long r_symndx;
0d4792f7 6234 int next_r;
411e1bfb
AM		 6235 struct elf_link_hash_entry *h;
6236 Elf_Internal_Sym *sym;
6237 asection *sec;
6238 bfd_vma off;
6239
6240 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6241 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6242 return 0;
411e1bfb 6243
e7b938ca 6244 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6245 || sec == NULL
7c8fe5c4 6246 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6247 return 1;
411e1bfb
AM		 6248
6249 /* Look inside a TOC section too. */
6250 if (h != NULL)
6251 {
6252 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6253 off = h->root.u.def.value;
6254 }
6255 else
6256 off = sym->st_value;
6257 off += rel->r_addend;
6258 BFD_ASSERT (off % 8 == 0);
7c8fe5c4
AM		 6259 r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8];
6260 next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1];
e7b938ca 6261 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6262 return 0;
0d4792f7
AM		 6263 if (toc_symndx != NULL)
6264 *toc_symndx = r_symndx;
6265 if ((h == NULL
6266 || ((h->root.type == bfd_link_hash_defined
6267 || h->root.type == bfd_link_hash_defweak)
f5385ebf 6268 && !h->def_dynamic))
0d4792f7
AM		 6269 && (next_r == -1 || next_r == -2))
6270 return 1 - next_r;
951fd09b 6271 return 1;
411e1bfb
AM		 6272}
6273
754021d0 6274/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6275 code for the old ABI, these will already have been done. */
754021d0
AM		 6276
6277static bfd_boolean
6278adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6279{
6280 struct ppc_link_hash_entry *eh;
6281 asection *sym_sec;
74f0fb50 6282 struct _opd_sec_data *opd;
754021d0
AM		 6283
6284 if (h->root.type == bfd_link_hash_indirect)
6285 return TRUE;
6286
6287 if (h->root.type == bfd_link_hash_warning)
6288 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6289
6290 if (h->root.type != bfd_link_hash_defined
6291 && h->root.type != bfd_link_hash_defweak)
6292 return TRUE;
6293
6294 eh = (struct ppc_link_hash_entry *) h;
6295 if (eh->adjust_done)
6296 return TRUE;
6297
6298 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 6299 opd = get_opd_info (sym_sec);
6300 if (opd != NULL && opd->adjust != NULL)
754021d0 6301 {
74f0fb50 6302 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 6303 if (adjust == -1)
6304 {
6305 /* This entry has been deleted. */
b3fac117 6306 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 6307 if (dsec == NULL)
6308 {
6309 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
6310 if (elf_discarded_section (dsec))
6311 {
b3fac117 6312 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 6313 break;
6314 }
6315 }
4025353c 6316 eh->elf.root.u.def.value = 0;
81688140 6317 eh->elf.root.u.def.section = dsec;
4025353c
AM		 6318 }
6319 else
6320 eh->elf.root.u.def.value += adjust;
754021d0
AM		 6321 eh->adjust_done = 1;
6322 }
6323 return TRUE;
6324}
6325
8c1d1bb8
AM		 6326/* Handles decrementing dynamic reloc counts for the reloc specified by
6327 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6328 have already been determined. */
6329
6330static bfd_boolean
6331dec_dynrel_count (bfd_vma r_info,
6332 asection *sec,
6333 struct bfd_link_info *info,
6334 Elf_Internal_Sym **local_syms,
6335 struct elf_link_hash_entry *h,
6336 asection *sym_sec)
6337{
6338 enum elf_ppc64_reloc_type r_type;
6339 struct ppc_dyn_relocs *p;
6340 struct ppc_dyn_relocs **pp;
6341
6342 /* Can this reloc be dynamic? This switch, and later tests here
6343 should be kept in sync with the code in check_relocs. */
6344 r_type = ELF64_R_TYPE (r_info);
6345 switch (r_type)
6346 {
6347 default:
6348 return TRUE;
6349
6350 case R_PPC64_TPREL16:
6351 case R_PPC64_TPREL16_LO:
6352 case R_PPC64_TPREL16_HI:
6353 case R_PPC64_TPREL16_HA:
6354 case R_PPC64_TPREL16_DS:
6355 case R_PPC64_TPREL16_LO_DS:
6356 case R_PPC64_TPREL16_HIGHER:
6357 case R_PPC64_TPREL16_HIGHERA:
6358 case R_PPC64_TPREL16_HIGHEST:
6359 case R_PPC64_TPREL16_HIGHESTA:
6360 if (!info->shared)
6361 return TRUE;
6362
6363 case R_PPC64_TPREL64:
6364 case R_PPC64_DTPMOD64:
6365 case R_PPC64_DTPREL64:
6366 case R_PPC64_ADDR64:
6367 case R_PPC64_REL30:
6368 case R_PPC64_REL32:
6369 case R_PPC64_REL64:
6370 case R_PPC64_ADDR14:
6371 case R_PPC64_ADDR14_BRNTAKEN:
6372 case R_PPC64_ADDR14_BRTAKEN:
6373 case R_PPC64_ADDR16:
6374 case R_PPC64_ADDR16_DS:
6375 case R_PPC64_ADDR16_HA:
6376 case R_PPC64_ADDR16_HI:
6377 case R_PPC64_ADDR16_HIGHER:
6378 case R_PPC64_ADDR16_HIGHERA:
6379 case R_PPC64_ADDR16_HIGHEST:
6380 case R_PPC64_ADDR16_HIGHESTA:
6381 case R_PPC64_ADDR16_LO:
6382 case R_PPC64_ADDR16_LO_DS:
6383 case R_PPC64_ADDR24:
6384 case R_PPC64_ADDR32:
6385 case R_PPC64_UADDR16:
6386 case R_PPC64_UADDR32:
6387 case R_PPC64_UADDR64:
6388 case R_PPC64_TOC:
6389 break;
6390 }
6391
6392 if (local_syms != NULL)
6393 {
6394 unsigned long r_symndx;
6395 Elf_Internal_Sym *sym;
6396 bfd *ibfd = sec->owner;
6397
6398 r_symndx = ELF64_R_SYM (r_info);
6399 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
6400 return FALSE;
6401 }
6402
6403 if ((info->shared
1d483afe 6404 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8
AM		 6405 || (h != NULL
6406 && (!info->symbolic
6407 || h->root.type == bfd_link_hash_defweak
6408 || !h->def_regular))))
6409 || (ELIMINATE_COPY_RELOCS
6410 && !info->shared
6411 && h != NULL
6412 && (h->root.type == bfd_link_hash_defweak
6413 || !h->def_regular)))
6414 ;
6415 else
6416 return TRUE;
6417
6418 if (h != NULL)
6419 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 6420 else
6edfbbad 6421 {
60124e18
AM		 6422 if (sym_sec != NULL)
6423 {
6424 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6425 pp = (struct ppc_dyn_relocs **) vpp;
6426 }
6427 else
6428 {
6429 void *vpp = &elf_section_data (sec)->local_dynrel;
6430 pp = (struct ppc_dyn_relocs **) vpp;
6431 }
6432
6433 /* elf_gc_sweep may have already removed all dyn relocs associated
6434 with local syms for a given section. Don't report a dynreloc
6435 miscount. */
6436 if (*pp == NULL)
6437 return TRUE;
6edfbbad 6438 }
8c1d1bb8
AM		 6439
6440 while ((p = *pp) != NULL)
6441 {
6442 if (p->sec == sec)
6443 {
1d483afe 6444 if (!must_be_dyn_reloc (info, r_type))
8c1d1bb8
AM		 6445 p->pc_count -= 1;
6446 p->count -= 1;
6447 if (p->count == 0)
6448 *pp = p->next;
6449 return TRUE;
6450 }
6451 pp = &p->next;
6452 }
6453
6454 (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"),
6455 sec->owner, sec);
6456 bfd_set_error (bfd_error_bad_value);
6457 return FALSE;
6458}
6459
754021d0
AM		 6460/* Remove unused Official Procedure Descriptor entries. Currently we
6461 only remove those associated with functions in discarded link-once
6462 sections, or weakly defined functions that have been overridden. It
6463 would be possible to remove many more entries for statically linked
6464 applications. */
6465
b34976b6 6466bfd_boolean
3f764659
JJ		 6467ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info,
6468 bfd_boolean non_overlapping)
1e2f5b6e
AM		 6469{
6470 bfd *ibfd;
754021d0 6471 bfd_boolean some_edited = FALSE;
3f764659 6472 asection *need_pad = NULL;
1e2f5b6e 6473
411e1bfb 6474 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM		 6475 {
6476 asection *sec;
6477 Elf_Internal_Rela *relstart, *rel, *relend;
6478 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 6479 Elf_Internal_Sym *local_syms;
1e2f5b6e
AM		 6480 struct elf_link_hash_entry **sym_hashes;
6481 bfd_vma offset;
74f0fb50 6482 struct _opd_sec_data *opd;
3f764659
JJ		 6483 bfd_boolean need_edit, add_aux_fields;
6484 bfd_size_type cnt_16b = 0;
1e2f5b6e
AM		 6485
6486 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 6487 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 6488 continue;
6489
4b85d634
AM		 6490 if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
6491 continue;
6492
1e2f5b6e
AM		 6493 if (sec->output_section == bfd_abs_section_ptr)
6494 continue;
6495
6496 /* Look through the section relocs. */
6497 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
6498 continue;
6499
6cdc0ccc 6500 local_syms = NULL;
0ffa91dd 6501 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 6502 sym_hashes = elf_sym_hashes (ibfd);
6503
6504 /* Read the relocations. */
4ce794b7 6505 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 6506 info->keep_memory);
1e2f5b6e 6507 if (relstart == NULL)
b34976b6 6508 return FALSE;
1e2f5b6e
AM		 6509
6510 /* First run through the relocs to check they are sane, and to
6511 determine whether we need to edit this opd section. */
b34976b6 6512 need_edit = FALSE;
3f764659 6513 need_pad = sec;
1e2f5b6e
AM		 6514 offset = 0;
6515 relend = relstart + sec->reloc_count;
50bc7936 6516 for (rel = relstart; rel < relend; )
1e2f5b6e 6517 {
04c9666a 6518 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 6519 unsigned long r_symndx;
6520 asection *sym_sec;
6521 struct elf_link_hash_entry *h;
6522 Elf_Internal_Sym *sym;
6523
3f764659 6524 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 6525 only interested in the reloc pointing to a function entry
6526 point. */
50bc7936
AM		 6527 if (rel->r_offset != offset
6528 || rel + 1 >= relend
6529 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 6530 {
6531 /* If someone messes with .opd alignment then after a
6532 "ld -r" we might have padding in the middle of .opd.
6533 Also, there's nothing to prevent someone putting
6534 something silly in .opd with the assembler. No .opd
b34976b6 6535 optimization for them! */
3f764659 6536 broken_opd:
1e2f5b6e 6537 (*_bfd_error_handler)
d003868e 6538 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 6539 need_edit = FALSE;
1e2f5b6e
AM		 6540 break;
6541 }
6542
50bc7936
AM		 6543 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
6544 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
6545 {
6546 (*_bfd_error_handler)
d003868e
AM		 6547 (_("%B: unexpected reloc type %u in .opd section"),
6548 ibfd, r_type);
50bc7936
AM		 6549 need_edit = FALSE;
6550 break;
6551 }
6552
1e2f5b6e 6553 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 6554 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
6555 r_symndx, ibfd))
50bc7936 6556 goto error_ret;
1e2f5b6e
AM		 6557
6558 if (sym_sec == NULL || sym_sec->owner == NULL)
6559 {
411e1bfb
AM		 6560 const char *sym_name;
6561 if (h != NULL)
6562 sym_name = h->root.root.string;
6563 else
26c61ae5
L		 6564 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
6565 sym_sec);
411e1bfb 6566
1e2f5b6e 6567 (*_bfd_error_handler)
d003868e
AM		 6568 (_("%B: undefined sym `%s' in .opd section"),
6569 ibfd, sym_name);
b34976b6 6570 need_edit = FALSE;
1e2f5b6e
AM		 6571 break;
6572 }
6573
51020317
AM		 6574 /* opd entries are always for functions defined in the
6575 current input bfd. If the symbol isn't defined in the
6576 input bfd, then we won't be using the function in this
6577 bfd; It must be defined in a linkonce section in another
6578 bfd, or is weak. It's also possible that we are
6579 discarding the function due to a linker script /DISCARD/,
6580 which we test for via the output_section. */
6581 if (sym_sec->owner != ibfd
6582 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 6583 need_edit = TRUE;
1e2f5b6e 6584
50bc7936 6585 rel += 2;
3f764659
JJ		 6586 if (rel == relend
6587 || (rel + 1 == relend && rel->r_offset == offset + 16))
6588 {
6589 if (sec->size == offset + 24)
6590 {
6591 need_pad = NULL;
6592 break;
6593 }
6594 if (rel == relend && sec->size == offset + 16)
6595 {
6596 cnt_16b++;
6597 break;
6598 }
6599 goto broken_opd;
6600 }
6601
6602 if (rel->r_offset == offset + 24)
6603 offset += 24;
6604 else if (rel->r_offset != offset + 16)
6605 goto broken_opd;
6606 else if (rel + 1 < relend
6607 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
6608 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
6609 {
6610 offset += 16;
6611 cnt_16b++;
6612 }
6613 else if (rel + 2 < relend
6614 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
6615 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
6616 {
6617 offset += 24;
6618 rel += 1;
6619 }
6620 else
6621 goto broken_opd;
1e2f5b6e
AM		 6622 }
6623
3f764659
JJ		 6624 add_aux_fields = non_overlapping && cnt_16b > 0;
6625
6626 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 6627 {
6628 Elf_Internal_Rela *write_rel;
6629 bfd_byte *rptr, *wptr;
3f764659 6630 bfd_byte *new_contents = NULL;
b34976b6 6631 bfd_boolean skip;
3f764659 6632 long opd_ent_size;
74f0fb50
AM		 6633 bfd_size_type amt;
6634
6635 amt = sec->size * sizeof (long) / 8;
6636 opd = &ppc64_elf_section_data (sec)->u.opd;
6637 opd->adjust = bfd_zalloc (obfd, amt);
6638 if (opd->adjust == NULL)
6639 return FALSE;
6640 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 6641
6642 /* This seems a waste of time as input .opd sections are all
6643 zeros as generated by gcc, but I suppose there's no reason
6644 this will always be so. We might start putting something in
6645 the third word of .opd entries. */
6646 if ((sec->flags & SEC_IN_MEMORY) == 0)
6647 {
eea6121a
AM		 6648 bfd_byte *loc;
6649 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 6650 {
eea6121a
AM		 6651 if (loc != NULL)
6652 free (loc);
50bc7936 6653 error_ret:
6cdc0ccc
AM		 6654 if (local_syms != NULL
6655 && symtab_hdr->contents != (unsigned char *) local_syms)
6656 free (local_syms);
6cdc0ccc
AM		 6657 if (elf_section_data (sec)->relocs != relstart)
6658 free (relstart);
b34976b6 6659 return FALSE;
6cdc0ccc 6660 }
1e2f5b6e
AM		 6661 sec->contents = loc;
6662 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6663 }
6664
6665 elf_section_data (sec)->relocs = relstart;
6666
3f764659 6667 new_contents = sec->contents;
3f764659
JJ		 6668 if (add_aux_fields)
6669 {
6670 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
6671 if (new_contents == NULL)
6672 return FALSE;
6673 need_pad = FALSE;
3f764659 6674 }
b4f4e59f
AM		 6675 wptr = new_contents;
6676 rptr = sec->contents;
3f764659 6677
1e2f5b6e 6678 write_rel = relstart;
b34976b6 6679 skip = FALSE;
1e2f5b6e 6680 offset = 0;
3f764659 6681 opd_ent_size = 0;
1e2f5b6e
AM		 6682 for (rel = relstart; rel < relend; rel++)
6683 {
50bc7936
AM		 6684 unsigned long r_symndx;
6685 asection *sym_sec;
6686 struct elf_link_hash_entry *h;
6687 Elf_Internal_Sym *sym;
6688
6689 r_symndx = ELF64_R_SYM (rel->r_info);
6690 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 6691 r_symndx, ibfd))
50bc7936
AM		 6692 goto error_ret;
6693
1e2f5b6e
AM		 6694 if (rel->r_offset == offset)
6695 {
50bc7936 6696 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 6697
6698 /* See if the .opd entry is full 24 byte or
6699 16 byte (with fd_aux entry overlapped with next
6700 fd_func). */
6701 opd_ent_size = 24;
6702 if ((rel + 2 == relend && sec->size == offset + 16)
6703 || (rel + 3 < relend
6704 && rel[2].r_offset == offset + 16
6705 && rel[3].r_offset == offset + 24
6706 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
6707 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
6708 opd_ent_size = 16;
6709
4025353c
AM		 6710 if (h != NULL
6711 && h->root.root.string[0] == '.')
c4f68ce3
AM		 6712 {
6713 fdh = get_fdh ((struct ppc_link_hash_entry *) h,
6714 ppc_hash_table (info));
6715 if (fdh != NULL
6716 && fdh->elf.root.type != bfd_link_hash_defined
6717 && fdh->elf.root.type != bfd_link_hash_defweak)
6718 fdh = NULL;
6719 }
1e2f5b6e 6720
51020317
AM		 6721 skip = (sym_sec->owner != ibfd
6722 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 6723 if (skip)
6724 {
4025353c 6725 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 6726 {
6727 /* Arrange for the function descriptor sym
6728 to be dropped. */
d6fe2dc1
AM		 6729 fdh->elf.root.u.def.value = 0;
6730 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 6731 }
74f0fb50 6732 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 6733 }
6734 else
1e2f5b6e
AM		 6735 {
6736 /* We'll be keeping this opd entry. */
6737
4025353c 6738 if (fdh != NULL)
1e2f5b6e 6739 {
754021d0
AM		 6740 /* Redefine the function descriptor symbol to
6741 this location in the opd section. It is
6742 necessary to update the value here rather
6743 than using an array of adjustments as we do
6744 for local symbols, because various places
6745 in the generic ELF code use the value
6746 stored in u.def.value. */
3f764659 6747 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 6748 fdh->adjust_done = 1;
1e2f5b6e 6749 }
754021d0
AM		 6750
6751 /* Local syms are a bit tricky. We could
6752 tweak them as they can be cached, but
6753 we'd need to look through the local syms
6754 for the function descriptor sym which we
6755 don't have at the moment. So keep an
6756 array of adjustments. */
74f0fb50 6757 opd->adjust[rel->r_offset / 8]
3f764659 6758 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 6759
6760 if (wptr != rptr)
3f764659
JJ		 6761 memcpy (wptr, rptr, opd_ent_size);
6762 wptr += opd_ent_size;
6763 if (add_aux_fields && opd_ent_size == 16)
6764 {
6765 memset (wptr, '\0', 8);
6766 wptr += 8;
6767 }
1e2f5b6e 6768 }
3f764659
JJ		 6769 rptr += opd_ent_size;
6770 offset += opd_ent_size;
1e2f5b6e
AM		 6771 }
6772
50bc7936
AM		 6773 if (skip)
6774 {
60124e18
AM		 6775 if (!NO_OPD_RELOCS
6776 && !info->relocatable
18d944df
AM		 6777 && !dec_dynrel_count (rel->r_info, sec, info,
6778 NULL, h, sym_sec))
8c1d1bb8 6779 goto error_ret;
50bc7936
AM		 6780 }
6781 else
1e2f5b6e 6782 {
50bc7936
AM		 6783 /* We need to adjust any reloc offsets to point to the
6784 new opd entries. While we're at it, we may as well
6785 remove redundant relocs. */
74f0fb50 6786 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 6787 if (write_rel != rel)
6788 memcpy (write_rel, rel, sizeof (*rel));
6789 ++write_rel;
6790 }
6791 }
6792
3f764659 6793 sec->size = wptr - new_contents;
1e2f5b6e 6794 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 6795 if (add_aux_fields)
6796 {
6797 free (sec->contents);
6798 sec->contents = new_contents;
6799 }
6800
05bf9422 6801 /* Fudge the header size too, as this is used later in
cdcf6e38
AM		 6802 elf_bfd_final_link if we are emitting relocs. */
6803 elf_section_data (sec)->rel_hdr.sh_size
6804 = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize;
6805 BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL);
754021d0 6806 some_edited = TRUE;
1e2f5b6e 6807 }
6cdc0ccc 6808 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 6809 free (relstart);
6cdc0ccc 6810
411e1bfb
AM		 6811 if (local_syms != NULL
6812 && symtab_hdr->contents != (unsigned char *) local_syms)
6813 {
6814 if (!info->keep_memory)
6815 free (local_syms);
6816 else
6817 symtab_hdr->contents = (unsigned char *) local_syms;
6818 }
6819 }
6820
754021d0
AM		 6821 if (some_edited)
6822 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
6823
3f764659
JJ		 6824 /* If we are doing a final link and the last .opd entry is just 16 byte
6825 long, add a 8 byte padding after it. */
6826 if (need_pad != NULL && !info->relocatable)
6827 {
6828 bfd_byte *p;
6829
6830 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
6831 {
6832 BFD_ASSERT (need_pad->size > 0);
6833
6834 p = bfd_malloc (need_pad->size + 8);
6835 if (p == NULL)
6836 return FALSE;
699733f6 6837
3f764659
JJ		 6838 if (! bfd_get_section_contents (need_pad->owner, need_pad,
6839 p, 0, need_pad->size))
6840 return FALSE;
6841
6842 need_pad->contents = p;
6843 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
6844 }
6845 else
6846 {
6847 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
6848 if (p == NULL)
6849 return FALSE;
6850
6851 need_pad->contents = p;
6852 }
6853
6854 memset (need_pad->contents + need_pad->size, 0, 8);
6855 need_pad->size += 8;
6856 }
6857
411e1bfb
AM		 6858 return TRUE;
6859}
6860
e1918d23 6861/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 6862
e1918d23 6863asection *
4ce794b7 6864ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
411e1bfb 6865{
411e1bfb
AM		 6866 struct ppc_link_hash_table *htab;
6867
411e1bfb 6868 htab = ppc_hash_table (info);
a48ebf4d
AM		 6869 if (htab->tls_get_addr != NULL)
6870 {
8387904d 6871 struct ppc_link_hash_entry *h = htab->tls_get_addr;
a48ebf4d 6872
8387904d
AM		 6873 while (h->elf.root.type == bfd_link_hash_indirect
6874 || h->elf.root.type == bfd_link_hash_warning)
6875 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
a48ebf4d
AM		 6876
6877 htab->tls_get_addr = h;
8387904d
AM		 6878
6879 if (htab->tls_get_addr_fd == NULL
6880 && h->oh != NULL
c4f68ce3
AM		 6881 && h->oh->is_func_descriptor
6882 && (h->oh->elf.root.type == bfd_link_hash_defined
6883 || h->oh->elf.root.type == bfd_link_hash_defweak))
8387904d
AM		 6884 htab->tls_get_addr_fd = h->oh;
6885 }
6886
6887 if (htab->tls_get_addr_fd != NULL)
6888 {
6889 struct ppc_link_hash_entry *h = htab->tls_get_addr_fd;
6890
6891 while (h->elf.root.type == bfd_link_hash_indirect
6892 || h->elf.root.type == bfd_link_hash_warning)
6893 h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link;
6894
6895 htab->tls_get_addr_fd = h;
a48ebf4d
AM		 6896 }
6897
e1918d23 6898 return _bfd_elf_tls_setup (obfd, info);
951fd09b 6899}
411e1bfb 6900
951fd09b
AM		 6901/* Run through all the TLS relocs looking for optimization
6902 opportunities. The linker has been hacked (see ppc64elf.em) to do
6903 a preliminary section layout so that we know the TLS segment
6904 offsets. We can't optimize earlier because some optimizations need
6905 to know the tp offset, and we need to optimize before allocating
6906 dynamic relocations. */
6907
6908bfd_boolean
4ce794b7 6909ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
951fd09b
AM		 6910{
6911 bfd *ibfd;
6912 asection *sec;
6913 struct ppc_link_hash_table *htab;
102890f0 6914 int pass;
951fd09b 6915
1d483afe 6916 if (info->relocatable || !info->executable)
411e1bfb
AM		 6917 return TRUE;
6918
951fd09b 6919 htab = ppc_hash_table (info);
411e1bfb
AM		 6920 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
6921 {
6922 Elf_Internal_Sym *locsyms = NULL;
30038c59
AM		 6923 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
6924 unsigned char *toc_ref = NULL;
411e1bfb 6925
102890f0
AM		 6926 /* Look at all the sections for this file. Make two passes over
6927 the relocs. On the first pass, mark toc entries involved
6928 with tls relocs, and check that tls relocs involved in
6929 setting up a tls_get_addr call are indeed followed by such a
6930 call. If they are not, exclude them from the optimizations
6931 done on the second pass. */
6932 for (pass = 0; pass < 2; ++pass)
6933 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6934 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
6935 {
6936 Elf_Internal_Rela *relstart, *rel, *relend;
411e1bfb 6937
102890f0
AM		 6938 /* Read the relocations. */
6939 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
6940 info->keep_memory);
6941 if (relstart == NULL)
6942 return FALSE;
411e1bfb 6943
102890f0
AM		 6944 relend = relstart + sec->reloc_count;
6945 for (rel = relstart; rel < relend; rel++)
6946 {
6947 enum elf_ppc64_reloc_type r_type;
6948 unsigned long r_symndx;
6949 struct elf_link_hash_entry *h;
6950 Elf_Internal_Sym *sym;
6951 asection *sym_sec;
6952 char *tls_mask;
6953 char tls_set, tls_clear, tls_type = 0;
6954 bfd_vma value;
6955 bfd_boolean ok_tprel, is_local;
6956 long toc_ref_index = 0;
6957 int expecting_tls_get_addr = 0;
411e1bfb 6958
102890f0
AM		 6959 r_symndx = ELF64_R_SYM (rel->r_info);
6960 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
6961 r_symndx, ibfd))
6962 {
6963 err_free_rel:
6964 if (elf_section_data (sec)->relocs != relstart)
6965 free (relstart);
6966 if (toc_ref != NULL)
6967 free (toc_ref);
6968 if (locsyms != NULL
0ffa91dd 6969 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 6970 != (unsigned char *) locsyms))
6971 free (locsyms);
6972 return FALSE;
6973 }
411e1bfb 6974
102890f0
AM		 6975 if (h != NULL)
6976 {
6977 if (h->root.type != bfd_link_hash_defined
6978 && h->root.type != bfd_link_hash_defweak)
6979 continue;
6980 value = h->root.u.def.value;
6981 }
6982 else
6983 /* Symbols referenced by TLS relocs must be of type
6984 STT_TLS. So no need for .opd local sym adjust. */
6985 value = sym->st_value;
6986
6987 ok_tprel = FALSE;
6988 is_local = FALSE;
6989 if (h == NULL
6990 || !h->def_dynamic)
6991 {
6992 is_local = TRUE;
6993 value += sym_sec->output_offset;
6994 value += sym_sec->output_section->vma;
6995 value -= htab->elf.tls_sec->vma;
6996 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
6997 < (bfd_vma) 1 << 32);
6998 }
951fd09b 6999
102890f0
AM		 7000 r_type = ELF64_R_TYPE (rel->r_info);
7001 switch (r_type)
7002 {
7003 case R_PPC64_GOT_TLSLD16:
7004 case R_PPC64_GOT_TLSLD16_LO:
7005 expecting_tls_get_addr = 1;
7006 /* Fall thru */
7007
7008 case R_PPC64_GOT_TLSLD16_HI:
7009 case R_PPC64_GOT_TLSLD16_HA:
7010 /* These relocs should never be against a symbol
7011 defined in a shared lib. Leave them alone if
7012 that turns out to be the case. */
7013 if (!is_local)
7014 continue;
411e1bfb 7015
102890f0 7016 /* LD -> LE */
411e1bfb 7017 tls_set = 0;
102890f0
AM		 7018 tls_clear = TLS_LD;
7019 tls_type = TLS_TLS | TLS_LD;
7020 break;
411e1bfb 7021
102890f0
AM		 7022 case R_PPC64_GOT_TLSGD16:
7023 case R_PPC64_GOT_TLSGD16_LO:
7024 expecting_tls_get_addr = 1;
7025 /* Fall thru */
7026
7027 case R_PPC64_GOT_TLSGD16_HI:
7028 case R_PPC64_GOT_TLSGD16_HA:
7029 if (ok_tprel)
7030 /* GD -> LE */
411e1bfb 7031 tls_set = 0;
102890f0
AM		 7032 else
7033 /* GD -> IE */
7034 tls_set = TLS_TLS | TLS_TPRELGD;
7035 tls_clear = TLS_GD;
7036 tls_type = TLS_TLS | TLS_GD;
7037 break;
7038
7039 case R_PPC64_GOT_TPREL16_DS:
7040 case R_PPC64_GOT_TPREL16_LO_DS:
7041 case R_PPC64_GOT_TPREL16_HI:
7042 case R_PPC64_GOT_TPREL16_HA:
7043 if (ok_tprel)
7044 {
7045 /* IE -> LE */
7046 tls_set = 0;
7047 tls_clear = TLS_TPREL;
7048 tls_type = TLS_TLS | TLS_TPREL;
7049 break;
7050 }
411e1bfb
AM		 7051 continue;
7052
102890f0
AM		 7053 case R_PPC64_TOC16:
7054 case R_PPC64_TOC16_LO:
7055 case R_PPC64_TLS:
7056 if (sym_sec == NULL || sym_sec != toc)
7057 continue;
7058
7059 /* Mark this toc entry as referenced by a TLS
7060 code sequence. We can do that now in the
7061 case of R_PPC64_TLS, and after checking for
7062 tls_get_addr for the TOC16 relocs. */
7063 if (toc_ref == NULL)
7064 {
7065 toc_ref = bfd_zmalloc (toc->size / 8);
7066 if (toc_ref == NULL)
7067 goto err_free_rel;
7068 }
7069 if (h != NULL)
7070 value = h->root.u.def.value;
7071 else
7072 value = sym->st_value;
7073 value += rel->r_addend;
7074 BFD_ASSERT (value < toc->size && value % 8 == 0);
7075 toc_ref_index = value / 8;
7076 if (r_type == R_PPC64_TLS)
7077 {
7078 toc_ref[toc_ref_index] = 1;
7079 continue;
7080 }
7081
7082 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7083 continue;
7084
7085 tls_set = 0;
7086 tls_clear = 0;
7087 expecting_tls_get_addr = 2;
7088 break;
7089
7090 case R_PPC64_TPREL64:
7091 if (pass == 0
7092 || sec != toc
7093 || toc_ref == NULL
7094 || !toc_ref[rel->r_offset / 8])
7095 continue;
7096 if (ok_tprel)
7097 {
7098 /* IE -> LE */
7099 tls_set = TLS_EXPLICIT;
7100 tls_clear = TLS_TPREL;
7101 break;
7102 }
7103 continue;
7104
7105 case R_PPC64_DTPMOD64:
7106 if (pass == 0
7107 || sec != toc
7108 || toc_ref == NULL
7109 || !toc_ref[rel->r_offset / 8])
7110 continue;
7111 if (rel + 1 < relend
7112 && (rel[1].r_info
7113 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7114 && rel[1].r_offset == rel->r_offset + 8)
7115 {
7116 if (ok_tprel)
7117 /* GD -> LE */
7118 tls_set = TLS_EXPLICIT | TLS_GD;
7119 else
7120 /* GD -> IE */
7121 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7122 tls_clear = TLS_GD;
7123 }
7124 else
7125 {
7126 if (!is_local)
7127 continue;
7128
7129 /* LD -> LE */
7130 tls_set = TLS_EXPLICIT;
7131 tls_clear = TLS_LD;
7132 }
7133 break;
7134
7135 default:
7136 continue;
7137 }
7138
7139 if (pass == 0)
7140 {
7141 if (!expecting_tls_get_addr)
7142 continue;
7143
7144 if (rel + 1 < relend)
7145 {
7146 Elf_Internal_Shdr *symtab_hdr;
7147 enum elf_ppc64_reloc_type r_type2;
7148 unsigned long r_symndx2;
7149 struct elf_link_hash_entry *h2;
7150
0ffa91dd 7151 symtab_hdr = &elf_symtab_hdr (ibfd);
102890f0
AM		 7152
7153 /* The next instruction should be a call to
7154 __tls_get_addr. Peek at the reloc to be sure. */
7155 r_type2 = ELF64_R_TYPE (rel[1].r_info);
7156 r_symndx2 = ELF64_R_SYM (rel[1].r_info);
7157 if (r_symndx2 >= symtab_hdr->sh_info
7158 && (r_type2 == R_PPC64_REL14
7159 || r_type2 == R_PPC64_REL14_BRTAKEN
7160 || r_type2 == R_PPC64_REL14_BRNTAKEN
7161 || r_type2 == R_PPC64_REL24))
7162 {
7163 struct elf_link_hash_entry **sym_hashes;
7164
7165 sym_hashes = elf_sym_hashes (ibfd);
7166
7167 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
7168 while (h2->root.type == bfd_link_hash_indirect
7169 || h2->root.type == bfd_link_hash_warning)
7170 h2 = ((struct elf_link_hash_entry *)
7171 h2->root.u.i.link);
7172 if (h2 != NULL
7173 && (h2 == &htab->tls_get_addr->elf
7174 || h2 == &htab->tls_get_addr_fd->elf))
7175 {
7176 if (expecting_tls_get_addr == 2)
7177 {
7178 /* Check for toc tls entries. */
7179 char *toc_tls;
7180 int retval;
7181
7182 retval = get_tls_mask (&toc_tls, NULL,
7183 &locsyms,
7184 rel, ibfd);
7185 if (retval == 0)
7186 goto err_free_rel;
7187 if (retval > 1 && toc_tls != NULL)
7188 toc_ref[toc_ref_index] = 1;
7189 }
7190 continue;
7191 }
7192 }
7193 }
7194
7195 if (expecting_tls_get_addr != 1)
7196 continue;
7197
7198 /* Uh oh, we didn't find the expected call. We
7199 could just mark this symbol to exclude it
7200 from tls optimization but it's safer to skip
7201 the entire section. */
7202 sec->has_tls_reloc = 0;
7203 break;
7204 }
7205
85f7a9cb 7206 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 7207 {
7208 struct plt_entry *ent;
7209 for (ent = htab->tls_get_addr->elf.plt.plist;
7210 ent != NULL;
7211 ent = ent->next)
7212 if (ent->addend == 0)
411e1bfb 7213 {
102890f0 7214 if (ent->plt.refcount > 0)
30038c59 7215 {
102890f0
AM		 7216 ent->plt.refcount -= 1;
7217 expecting_tls_get_addr = 0;
30038c59 7218 }
102890f0 7219 break;
411e1bfb 7220 }
102890f0 7221 }
411e1bfb 7222
85f7a9cb 7223 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 7224 {
7225 struct plt_entry *ent;
7226 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7227 ent != NULL;
7228 ent = ent->next)
7229 if (ent->addend == 0)
411e1bfb 7230 {
102890f0
AM		 7231 if (ent->plt.refcount > 0)
7232 ent->plt.refcount -= 1;
7233 break;
411e1bfb 7234 }
102890f0 7235 }
411e1bfb 7236
102890f0 7237 if (tls_clear == 0)
30038c59
AM		 7238 continue;
7239
102890f0
AM		 7240 if ((tls_set & TLS_EXPLICIT) == 0)
7241 {
7242 struct got_entry *ent;
411e1bfb 7243
102890f0
AM		 7244 /* Adjust got entry for this reloc. */
7245 if (h != NULL)
7246 ent = h->got.glist;
7247 else
7248 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7249
102890f0
AM		 7250 for (; ent != NULL; ent = ent->next)
7251 if (ent->addend == rel->r_addend
7252 && ent->owner == ibfd
7253 && ent->tls_type == tls_type)
7254 break;
7255 if (ent == NULL)
7256 abort ();
411e1bfb 7257
102890f0
AM		 7258 if (tls_set == 0)
7259 {
7260 /* We managed to get rid of a got entry. */
7261 if (ent->got.refcount > 0)
7262 ent->got.refcount -= 1;
7263 }
7264 }
7265 else
7266 {
7267 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7268 we'll lose one or two dyn relocs. */
7269 if (!dec_dynrel_count (rel->r_info, sec, info,
7270 NULL, h, sym_sec))
7271 return FALSE;
411e1bfb 7272
102890f0
AM		 7273 if (tls_set == (TLS_EXPLICIT | TLS_GD))
7274 {
7275 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
7276 NULL, h, sym_sec))
7277 return FALSE;
7278 }
7279 }
411e1bfb 7280
102890f0
AM		 7281 *tls_mask |= tls_set;
7282 *tls_mask &= ~tls_clear;
7283 }
8c1d1bb8 7284
102890f0
AM		 7285 if (elf_section_data (sec)->relocs != relstart)
7286 free (relstart);
7287 }
411e1bfb 7288
102890f0
AM		 7289 if (toc_ref != NULL)
7290 free (toc_ref);
411e1bfb 7291
102890f0 7292 if (locsyms != NULL
0ffa91dd 7293 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
102890f0
AM		 7294 {
7295 if (!info->keep_memory)
7296 free (locsyms);
7297 else
0ffa91dd 7298 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
411e1bfb 7299 }
102890f0 7300 }
b34976b6 7301 return TRUE;
1e2f5b6e 7302}
b34976b6 7303
c5614fa4
AM		 7304/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7305 the values of any global symbols in a toc section that has been
7306 edited. Globals in toc sections should be a rarity, so this function
7307 sets a flag if any are found in toc sections other than the one just
7308 edited, so that futher hash table traversals can be avoided. */
7309
7310struct adjust_toc_info
7311{
7312 asection *toc;
7313 unsigned long *skip;
7314 bfd_boolean global_toc_syms;
7315};
7316
7317static bfd_boolean
7318adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
7319{
7320 struct ppc_link_hash_entry *eh;
7321 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
7322
7323 if (h->root.type == bfd_link_hash_indirect)
7324 return TRUE;
7325
7326 if (h->root.type == bfd_link_hash_warning)
7327 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7328
7329 if (h->root.type != bfd_link_hash_defined
7330 && h->root.type != bfd_link_hash_defweak)
7331 return TRUE;
7332
7333 eh = (struct ppc_link_hash_entry *) h;
7334 if (eh->adjust_done)
7335 return TRUE;
7336
7337 if (eh->elf.root.u.def.section == toc_inf->toc)
7338 {
7339 unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3];
7340 if (skip != (unsigned long) -1)
7341 eh->elf.root.u.def.value -= skip;
7342 else
7343 {
7344 (*_bfd_error_handler)
7345 (_("%s defined in removed toc entry"), eh->elf.root.root.string);
7346 eh->elf.root.u.def.section = &bfd_abs_section;
7347 eh->elf.root.u.def.value = 0;
7348 }
7349 eh->adjust_done = 1;
7350 }
7351 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
7352 toc_inf->global_toc_syms = TRUE;
7353
7354 return TRUE;
7355}
7356
7357/* Examine all relocs referencing .toc sections in order to remove
7358 unused .toc entries. */
7359
7360bfd_boolean
7361ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info)
7362{
7363 bfd *ibfd;
7364 struct adjust_toc_info toc_inf;
7365
7366 toc_inf.global_toc_syms = TRUE;
7367 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7368 {
7369 asection *toc, *sec;
7370 Elf_Internal_Shdr *symtab_hdr;
7371 Elf_Internal_Sym *local_syms;
7372 struct elf_link_hash_entry **sym_hashes;
92b7a70f 7373 Elf_Internal_Rela *relstart, *rel;
c5614fa4
AM		 7374 unsigned long *skip, *drop;
7375 unsigned char *used;
7376 unsigned char *keep, last, some_unused;
7377
7378 toc = bfd_get_section_by_name (ibfd, ".toc");
7379 if (toc == NULL
92b7a70f 7380 || toc->size == 0
c5614fa4
AM		 7381 || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
7382 || elf_discarded_section (toc))
7383 continue;
7384
7385 local_syms = NULL;
0ffa91dd 7386 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 7387 sym_hashes = elf_sym_hashes (ibfd);
7388
7389 /* Look at sections dropped from the final link. */
7390 skip = NULL;
7391 relstart = NULL;
7392 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7393 {
7394 if (sec->reloc_count == 0
7395 || !elf_discarded_section (sec)
7396 || get_opd_info (sec)
7397 || (sec->flags & SEC_ALLOC) == 0
7398 || (sec->flags & SEC_DEBUGGING) != 0)
7399 continue;
7400
7401 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
7402 if (relstart == NULL)
7403 goto error_ret;
7404
7405 /* Run through the relocs to see which toc entries might be
7406 unused. */
7407 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7408 {
7409 enum elf_ppc64_reloc_type r_type;
7410 unsigned long r_symndx;
7411 asection *sym_sec;
7412 struct elf_link_hash_entry *h;
7413 Elf_Internal_Sym *sym;
7414 bfd_vma val;
7415
7416 r_type = ELF64_R_TYPE (rel->r_info);
7417 switch (r_type)
7418 {
7419 default:
7420 continue;
7421
7422 case R_PPC64_TOC16:
7423 case R_PPC64_TOC16_LO:
7424 case R_PPC64_TOC16_HI:
7425 case R_PPC64_TOC16_HA:
7426 case R_PPC64_TOC16_DS:
7427 case R_PPC64_TOC16_LO_DS:
7428 break;
7429 }
7430
7431 r_symndx = ELF64_R_SYM (rel->r_info);
7432 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7433 r_symndx, ibfd))
7434 goto error_ret;
7435
7436 if (sym_sec != toc)
7437 continue;
7438
7439 if (h != NULL)
7440 val = h->root.u.def.value;
7441 else
7442 val = sym->st_value;
7443 val += rel->r_addend;
7444
7445 if (val >= toc->size)
7446 continue;
7447
7448 /* Anything in the toc ought to be aligned to 8 bytes.
7449 If not, don't mark as unused. */
7450 if (val & 7)
7451 continue;
7452
7453 if (skip == NULL)
7454 {
7455 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8);
7456 if (skip == NULL)
7457 goto error_ret;
7458 }
7459
7460 skip[val >> 3] = 1;
7461 }
7462
7463 if (elf_section_data (sec)->relocs != relstart)
7464 free (relstart);
7465 }
7466
7467 if (skip == NULL)
7468 continue;
7469
7470 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
7471 if (used == NULL)
7472 {
7473 error_ret:
7474 if (local_syms != NULL
7475 && symtab_hdr->contents != (unsigned char *) local_syms)
7476 free (local_syms);
7477 if (sec != NULL
7478 && relstart != NULL
7479 && elf_section_data (sec)->relocs != relstart)
7480 free (relstart);
7481 if (skip != NULL)
7482 free (skip);
7483 return FALSE;
7484 }
7485
30038c59
AM		 7486 /* Now check all kept sections that might reference the toc.
7487 Check the toc itself last. */
7488 for (sec = (ibfd->sections == toc && toc->next ? toc->next
7489 : ibfd->sections);
c5614fa4 7490 sec != NULL;
c5614fa4 7491 sec = (sec == toc ? NULL
c5614fa4 7492 : sec->next == NULL ? toc
30038c59 7493 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 7494 : sec->next))
7495 {
7496 int repeat;
7497
7498 if (sec->reloc_count == 0
7499 || elf_discarded_section (sec)
7500 || get_opd_info (sec)
7501 || (sec->flags & SEC_ALLOC) == 0
7502 || (sec->flags & SEC_DEBUGGING) != 0)
7503 continue;
7504
7505 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE);
7506 if (relstart == NULL)
7507 goto error_ret;
7508
7509 /* Mark toc entries referenced as used. */
7510 repeat = 0;
7511 do
7512 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7513 {
7514 enum elf_ppc64_reloc_type r_type;
7515 unsigned long r_symndx;
7516 asection *sym_sec;
7517 struct elf_link_hash_entry *h;
7518 Elf_Internal_Sym *sym;
7519 bfd_vma val;
7520
7521 r_type = ELF64_R_TYPE (rel->r_info);
7522 switch (r_type)
7523 {
7524 case R_PPC64_TOC16:
7525 case R_PPC64_TOC16_LO:
7526 case R_PPC64_TOC16_HI:
7527 case R_PPC64_TOC16_HA:
7528 case R_PPC64_TOC16_DS:
7529 case R_PPC64_TOC16_LO_DS:
7530 /* In case we're taking addresses of toc entries. */
7531 case R_PPC64_ADDR64:
7532 break;
7533
7534 default:
7535 continue;
7536 }
7537
7538 r_symndx = ELF64_R_SYM (rel->r_info);
7539 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7540 r_symndx, ibfd))
7541 {
7542 free (used);
7543 goto error_ret;
7544 }
7545
7546 if (sym_sec != toc)
7547 continue;
7548
7549 if (h != NULL)
7550 val = h->root.u.def.value;
7551 else
7552 val = sym->st_value;
7553 val += rel->r_addend;
7554
7555 if (val >= toc->size)
7556 continue;
7557
7558 /* For the toc section, we only mark as used if
7559 this entry itself isn't unused. */
7560 if (sec == toc
7561 && !used[val >> 3]
7562 && (used[rel->r_offset >> 3]
7563 || !skip[rel->r_offset >> 3]))
7564 /* Do all the relocs again, to catch reference
7565 chains. */
7566 repeat = 1;
7567
7568 used[val >> 3] = 1;
7569 }
7570 while (repeat);
7571 }
7572
7573 /* Merge the used and skip arrays. Assume that TOC
7574 doublewords not appearing as either used or unused belong
7575 to to an entry more than one doubleword in size. */
7576 for (drop = skip, keep = used, last = 0, some_unused = 0;
7577 drop < skip + (toc->size + 7) / 8;
7578 ++drop, ++keep)
7579 {
7580 if (*keep)
7581 {
7582 *drop = 0;
7583 last = 0;
7584 }
7585 else if (*drop)
7586 {
7587 some_unused = 1;
7588 last = 1;
7589 }
7590 else
7591 *drop = last;
7592 }
7593
7594 free (used);
7595
7596 if (some_unused)
7597 {
7598 bfd_byte *contents, *src;
7599 unsigned long off;
7600
7601 /* Shuffle the toc contents, and at the same time convert the
7602 skip array from booleans into offsets. */
7603 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
7604 goto error_ret;
7605
7606 elf_section_data (toc)->this_hdr.contents = contents;
7607
7608 for (src = contents, off = 0, drop = skip;
7609 src < contents + toc->size;
7610 src += 8, ++drop)
7611 {
7612 if (*drop)
7613 {
7614 *drop = (unsigned long) -1;
7615 off += 8;
7616 }
7617 else if (off != 0)
7618 {
7619 *drop = off;
7620 memcpy (src - off, src, 8);
7621 }
7622 }
7623 toc->rawsize = toc->size;
7624 toc->size = src - contents - off;
7625
92b7a70f
AM		 7626 if (toc->reloc_count != 0)
7627 {
7628 Elf_Internal_Rela *wrel;
7629 bfd_size_type sz;
c5614fa4 7630
92b7a70f
AM		 7631 /* Read toc relocs. */
7632 relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
7633 TRUE);
7634 if (relstart == NULL)
7635 goto error_ret;
7636
7637 /* Remove unused toc relocs, and adjust those we keep. */
7638 wrel = relstart;
7639 for (rel = relstart; rel < relstart + toc->reloc_count; ++rel)
7640 if (skip[rel->r_offset >> 3] != (unsigned long) -1)
7641 {
7642 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
7643 wrel->r_info = rel->r_info;
7644 wrel->r_addend = rel->r_addend;
7645 ++wrel;
7646 }
8c1d1bb8
AM		 7647 else if (!dec_dynrel_count (rel->r_info, toc, info,
7648 &local_syms, NULL, NULL))
7649 goto error_ret;
35090471 7650
92b7a70f
AM		 7651 toc->reloc_count = wrel - relstart;
7652 sz = elf_section_data (toc)->rel_hdr.sh_entsize;
7653 elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz;
7654 BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL);
7655 }
c5614fa4
AM		 7656
7657 /* Adjust addends for relocs against the toc section sym. */
7658 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7659 {
7660 if (sec->reloc_count == 0
7661 || elf_discarded_section (sec))
7662 continue;
7663
7664 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7665 TRUE);
7666 if (relstart == NULL)
7667 goto error_ret;
7668
7669 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
7670 {
7671 enum elf_ppc64_reloc_type r_type;
7672 unsigned long r_symndx;
7673 asection *sym_sec;
7674 struct elf_link_hash_entry *h;
7675 Elf_Internal_Sym *sym;
7676
7677 r_type = ELF64_R_TYPE (rel->r_info);
7678 switch (r_type)
7679 {
7680 default:
7681 continue;
7682
7683 case R_PPC64_TOC16:
7684 case R_PPC64_TOC16_LO:
7685 case R_PPC64_TOC16_HI:
7686 case R_PPC64_TOC16_HA:
7687 case R_PPC64_TOC16_DS:
7688 case R_PPC64_TOC16_LO_DS:
7689 case R_PPC64_ADDR64:
7690 break;
7691 }
7692
7693 r_symndx = ELF64_R_SYM (rel->r_info);
7694 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7695 r_symndx, ibfd))
7696 goto error_ret;
7697
7698 if (sym_sec != toc || h != NULL || sym->st_value != 0)
7699 continue;
7700
7701 rel->r_addend -= skip[rel->r_addend >> 3];
7702 }
7703 }
7704
7705 /* We shouldn't have local or global symbols defined in the TOC,
7706 but handle them anyway. */
7707 if (local_syms != NULL)
7708 {
7709 Elf_Internal_Sym *sym;
7710
7711 for (sym = local_syms;
7712 sym < local_syms + symtab_hdr->sh_info;
7713 ++sym)
cb33740c 7714 if (sym->st_value != 0
c5614fa4
AM		 7715 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
7716 {
7717 if (skip[sym->st_value >> 3] != (unsigned long) -1)
7718 sym->st_value -= skip[sym->st_value >> 3];
7719 else
7720 {
7721 (*_bfd_error_handler)
7722 (_("%s defined in removed toc entry"),
26c61ae5
L		 7723 bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7724 NULL));
c5614fa4
AM		 7725 sym->st_value = 0;
7726 sym->st_shndx = SHN_ABS;
7727 }
7728 symtab_hdr->contents = (unsigned char *) local_syms;
7729 }
7730 }
7731
7732 /* Finally, adjust any global syms defined in the toc. */
7733 if (toc_inf.global_toc_syms)
7734 {
7735 toc_inf.toc = toc;
7736 toc_inf.skip = skip;
7737 toc_inf.global_toc_syms = FALSE;
7738 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
7739 &toc_inf);
7740 }
7741 }
7742
7743 if (local_syms != NULL
7744 && symtab_hdr->contents != (unsigned char *) local_syms)
7745 {
7746 if (!info->keep_memory)
7747 free (local_syms);
7748 else
7749 symtab_hdr->contents = (unsigned char *) local_syms;
7750 }
7751 free (skip);
7752 }
7753
7754 return TRUE;
7755}
7756
65f38f15
AM		 7757/* Allocate space in .plt, .got and associated reloc sections for
7758 dynamic relocs. */
5bd4f169 7759
b34976b6 7760static bfd_boolean
4ce794b7 7761allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 7762{
65f38f15
AM		 7763 struct bfd_link_info *info;
7764 struct ppc_link_hash_table *htab;
5bd4f169 7765 asection *s;
65f38f15
AM		 7766 struct ppc_link_hash_entry *eh;
7767 struct ppc_dyn_relocs *p;
411e1bfb 7768 struct got_entry *gent;
5bd4f169 7769
e92d460e 7770 if (h->root.type == bfd_link_hash_indirect)
b34976b6 7771 return TRUE;
5bd4f169 7772
e92d460e
AM		 7773 if (h->root.type == bfd_link_hash_warning)
7774 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7775
65f38f15
AM		 7776 info = (struct bfd_link_info *) inf;
7777 htab = ppc_hash_table (info);
5bd4f169 7778
65f38f15 7779 if (htab->elf.dynamic_sections_created
411e1bfb 7780 && h->dynindx != -1
9c7a29a3 7781 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
5bd4f169 7782 {
411e1bfb
AM		 7783 struct plt_entry *pent;
7784 bfd_boolean doneone = FALSE;
7785 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7786 if (pent->plt.refcount > 0)
7787 {
411e1bfb
AM		 7788 /* If this is the first .plt entry, make room for the special
7789 first entry. */
4ce794b7 7790 s = htab->plt;
eea6121a
AM		 7791 if (s->size == 0)
7792 s->size += PLT_INITIAL_ENTRY_SIZE;
411e1bfb 7793
eea6121a 7794 pent->plt.offset = s->size;
411e1bfb
AM		 7795
7796 /* Make room for this entry. */
eea6121a 7797 s->size += PLT_ENTRY_SIZE;
411e1bfb
AM		 7798
7799 /* Make room for the .glink code. */
4ce794b7 7800 s = htab->glink;
eea6121a
AM		 7801 if (s->size == 0)
7802 s->size += GLINK_CALL_STUB_SIZE;
411e1bfb 7803 /* We need bigger stubs past index 32767. */
eea6121a
AM		 7804 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
7805 s->size += 4;
7806 s->size += 2*4;
411e1bfb
AM		 7807
7808 /* We also need to make an entry in the .rela.plt section. */
4ce794b7 7809 s = htab->relplt;
eea6121a 7810 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 7811 doneone = TRUE;
7812 }
7813 else
7814 pent->plt.offset = (bfd_vma) -1;
7815 if (!doneone)
65f38f15 7816 {
411e1bfb 7817 h->plt.plist = NULL;
f5385ebf 7818 h->needs_plt = 0;
65f38f15
AM		 7819 }
7820 }
7821 else
7822 {
411e1bfb 7823 h->plt.plist = NULL;
f5385ebf 7824 h->needs_plt = 0;
65f38f15
AM		 7825 }
7826
951fd09b
AM		 7827 eh = (struct ppc_link_hash_entry *) h;
7828 /* Run through the TLS GD got entries first if we're changing them
7829 to TPREL. */
e7b938ca 7830 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 7831 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7832 if (gent->got.refcount > 0
7833 && (gent->tls_type & TLS_GD) != 0)
7834 {
7835 /* This was a GD entry that has been converted to TPREL. If
7836 there happens to be a TPREL entry we can use that one. */
7837 struct got_entry *ent;
7838 for (ent = h->got.glist; ent != NULL; ent = ent->next)
7839 if (ent->got.refcount > 0
7840 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 7841 && ent->addend == gent->addend
7842 && ent->owner == gent->owner)
951fd09b
AM		 7843 {
7844 gent->got.refcount = 0;
7845 break;
7846 }
7847
7848 /* If not, then we'll be using our own TPREL entry. */
7849 if (gent->got.refcount != 0)
7850 gent->tls_type = TLS_TLS | TLS_TPREL;
7851 }
7852
411e1bfb
AM		 7853 for (gent = h->got.glist; gent != NULL; gent = gent->next)
7854 if (gent->got.refcount > 0)
7855 {
951fd09b
AM		 7856 bfd_boolean dyn;
7857
411e1bfb 7858 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 7859 Undefined weak syms won't yet be marked as dynamic,
7860 nor will all TLS symbols. */
411e1bfb 7861 if (h->dynindx == -1
b099ab9f
AM		 7862 && !h->forced_local
7863 && htab->elf.dynamic_sections_created)
411e1bfb 7864 {
c152c796 7865 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 7866 return FALSE;
7867 }
65f38f15 7868
d881513a 7869 if ((gent->tls_type & TLS_LD) != 0
f5385ebf 7870 && !h->def_dynamic)
411e1bfb 7871 {
102890f0
AM		 7872 ppc64_tlsld_got (gent->owner)->refcount += 1;
7873 gent->got.offset = (bfd_vma) -1;
951fd09b 7874 continue;
411e1bfb 7875 }
951fd09b 7876
0c8d6e5c 7877 if (!is_ppc64_elf (gent->owner))
0ffa91dd
NC		 7878 continue;
7879
e717da7e 7880 s = ppc64_elf_tdata (gent->owner)->got;
eea6121a
AM		 7881 gent->got.offset = s->size;
7882 s->size
d881513a 7883 += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8;
951fd09b 7884 dyn = htab->elf.dynamic_sections_created;
4e795f50
AM		 7885 if ((info->shared
7886 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
7887 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7888 || h->root.type != bfd_link_hash_undefweak))
eea6121a 7889 ppc64_elf_tdata (gent->owner)->relgot->size
e7b938ca 7890 += (gent->tls_type & eh->tls_mask & TLS_GD
951fd09b
AM		 7891 ? 2 * sizeof (Elf64_External_Rela)
7892 : sizeof (Elf64_External_Rela));
411e1bfb
AM		 7893 }
7894 else
7895 gent->got.offset = (bfd_vma) -1;
65f38f15 7896
b099ab9f
AM		 7897 if (eh->dyn_relocs == NULL
7898 || !htab->elf.dynamic_sections_created)
b34976b6 7899 return TRUE;
65f38f15
AM		 7900
7901 /* In the shared -Bsymbolic case, discard space allocated for
7902 dynamic pc-relative relocs against symbols which turn out to be
7903 defined in regular objects. For the normal shared case, discard
7904 space for relocs that have become local due to symbol visibility
7905 changes. */
7906
7907 if (info->shared)
7908 {
9c7a29a3 7909 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 7910 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 7911 generated via assembly. We want calls to protected symbols to
7912 resolve directly to the function rather than going via the plt.
7913 If people want function pointer comparisons to work as expected
7914 then they should avoid writing weird assembly. */
09695f56 7915 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15
AM		 7916 {
7917 struct ppc_dyn_relocs **pp;
7918
7919 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 7920 {
65f38f15
AM		 7921 p->count -= p->pc_count;
7922 p->pc_count = 0;
7923 if (p->count == 0)
7924 *pp = p->next;
7925 else
7926 pp = &p->next;
5bd4f169 7927 }
65f38f15 7928 }
4e795f50
AM		 7929
7930 /* Also discard relocs on undefined weak syms with non-default
7931 visibility. */
cab87ef9
AM		 7932 if (eh->dyn_relocs != NULL
7933 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 7934 {
7935 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7936 eh->dyn_relocs = NULL;
7937
7938 /* Make sure this symbol is output as a dynamic symbol.
7939 Undefined weak syms won't yet be marked as dynamic. */
7940 else if (h->dynindx == -1
7941 && !h->forced_local)
7942 {
7943 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7944 return FALSE;
7945 }
7946 }
65f38f15 7947 }
f4656909 7948 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 7949 {
7950 /* For the non-shared case, discard space for relocs against
7951 symbols which turn out to need copy relocs or are not
7952 dynamic. */
7953
f5385ebf 7954 if (!h->non_got_ref
f5385ebf 7955 && !h->def_regular)
65f38f15
AM		 7956 {
7957 /* Make sure this symbol is output as a dynamic symbol.
7958 Undefined weak syms won't yet be marked as dynamic. */
7959 if (h->dynindx == -1
f5385ebf 7960 && !h->forced_local)
65f38f15 7961 {
c152c796 7962 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 7963 return FALSE;
65f38f15
AM		 7964 }
7965
7966 /* If that succeeded, we know we'll be keeping all the
7967 relocs. */
7968 if (h->dynindx != -1)
7969 goto keep;
7970 }
7971
7972 eh->dyn_relocs = NULL;
7973
ec338859 7974 keep: ;
65f38f15
AM		 7975 }
7976
7977 /* Finally, allocate space. */
7978 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7979 {
7980 asection *sreloc = elf_section_data (p->sec)->sreloc;
eea6121a 7981 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 7982 }
7983
b34976b6 7984 return TRUE;
65f38f15
AM		 7985}
7986
7987/* Find any dynamic relocs that apply to read-only sections. */
7988
b34976b6 7989static bfd_boolean
4ce794b7 7990readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM		 7991{
7992 struct ppc_link_hash_entry *eh;
7993 struct ppc_dyn_relocs *p;
7994
e92d460e
AM		 7995 if (h->root.type == bfd_link_hash_warning)
7996 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7997
65f38f15
AM		 7998 eh = (struct ppc_link_hash_entry *) h;
7999 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8000 {
8001 asection *s = p->sec->output_section;
8002
8003 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8004 {
4ce794b7 8005 struct bfd_link_info *info = inf;
65f38f15
AM		 8006
8007 info->flags |= DF_TEXTREL;
8008
8009 /* Not an error, just cut short the traversal. */
b34976b6 8010 return FALSE;
65f38f15
AM		 8011 }
8012 }
b34976b6 8013 return TRUE;
65f38f15
AM		 8014}
8015
8016/* Set the sizes of the dynamic sections. */
8017
b34976b6 8018static bfd_boolean
4ce794b7
AM		 8019ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
8020 struct bfd_link_info *info)
65f38f15
AM		 8021{
8022 struct ppc_link_hash_table *htab;
8023 bfd *dynobj;
8024 asection *s;
b34976b6 8025 bfd_boolean relocs;
65f38f15
AM		 8026 bfd *ibfd;
8027
8028 htab = ppc_hash_table (info);
8029 dynobj = htab->elf.dynobj;
8030 if (dynobj == NULL)
8031 abort ();
8032
8033 if (htab->elf.dynamic_sections_created)
8034 {
8035 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 8036 if (info->executable)
65f38f15
AM		 8037 {
8038 s = bfd_get_section_by_name (dynobj, ".interp");
8039 if (s == NULL)
8040 abort ();
eea6121a 8041 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 8042 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8043 }
8044 }
8045
8046 /* Set up .got offsets for local syms, and space for local dynamic
8047 relocs. */
8048 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8049 {
411e1bfb
AM		 8050 struct got_entry **lgot_ents;
8051 struct got_entry **end_lgot_ents;
e7b938ca 8052 char *lgot_masks;
65f38f15
AM		 8053 bfd_size_type locsymcount;
8054 Elf_Internal_Shdr *symtab_hdr;
8055 asection *srel;
8056
0c8d6e5c 8057 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 8058 continue;
8059
8060 for (s = ibfd->sections; s != NULL; s = s->next)
8061 {
ec338859 8062 struct ppc_dyn_relocs *p;
65f38f15 8063
6edfbbad 8064 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 8065 {
ec338859
AM		 8066 if (!bfd_is_abs_section (p->sec)
8067 && bfd_is_abs_section (p->sec->output_section))
8068 {
8069 /* Input section has been discarded, either because
8070 it is a copy of a linkonce section or due to
8071 linker script /DISCARD/, so we'll be discarding
8072 the relocs too. */
8073 }
248866a8 8074 else if (p->count != 0)
ec338859
AM		 8075 {
8076 srel = elf_section_data (p->sec)->sreloc;
eea6121a 8077 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 8078 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8079 info->flags |= DF_TEXTREL;
ec338859 8080 }
65f38f15
AM		 8081 }
8082 }
8083
411e1bfb
AM		 8084 lgot_ents = elf_local_got_ents (ibfd);
8085 if (!lgot_ents)
65f38f15
AM		 8086 continue;
8087
0ffa91dd 8088 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 8089 locsymcount = symtab_hdr->sh_info;
411e1bfb 8090 end_lgot_ents = lgot_ents + locsymcount;
e7b938ca 8091 lgot_masks = (char *) end_lgot_ents;
e717da7e
AM		 8092 s = ppc64_elf_tdata (ibfd)->got;
8093 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 8094 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 8095 {
411e1bfb
AM		 8096 struct got_entry *ent;
8097
8098 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
8099 if (ent->got.refcount > 0)
8100 {
e7b938ca 8101 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 8102 {
102890f0
AM		 8103 ppc64_tlsld_got (ibfd)->refcount += 1;
8104 ent->got.offset = (bfd_vma) -1;
411e1bfb
AM		 8105 }
8106 else
8107 {
eea6121a 8108 ent->got.offset = s->size;
e7b938ca 8109 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
411e1bfb 8110 {
eea6121a 8111 s->size += 16;
411e1bfb 8112 if (info->shared)
eea6121a 8113 srel->size += 2 * sizeof (Elf64_External_Rela);
411e1bfb
AM		 8114 }
8115 else
8116 {
eea6121a 8117 s->size += 8;
411e1bfb 8118 if (info->shared)
eea6121a 8119 srel->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 8120 }
8121 }
8122 }
8123 else
8124 ent->got.offset = (bfd_vma) -1;
65f38f15
AM		 8125 }
8126 }
8127
8128 /* Allocate global sym .plt and .got entries, and space for global
8129 sym dynamic relocs. */
4ce794b7 8130 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 8131
102890f0
AM		 8132 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8133 {
0c8d6e5c 8134 if (!is_ppc64_elf (ibfd))
102890f0
AM		 8135 continue;
8136
8137 if (ppc64_tlsld_got (ibfd)->refcount > 0)
8138 {
8139 s = ppc64_elf_tdata (ibfd)->got;
8140 ppc64_tlsld_got (ibfd)->offset = s->size;
8141 s->size += 16;
8142 if (info->shared)
8143 {
8144 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
8145 srel->size += sizeof (Elf64_External_Rela);
8146 }
8147 }
8148 else
8149 ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1;
8150 }
8151
65f38f15
AM		 8152 /* We now have determined the sizes of the various dynamic sections.
8153 Allocate memory for them. */
b34976b6 8154 relocs = FALSE;
65f38f15
AM		 8155 for (s = dynobj->sections; s != NULL; s = s->next)
8156 {
8157 if ((s->flags & SEC_LINKER_CREATED) == 0)
8158 continue;
8159
4ce794b7 8160 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 8161 /* These haven't been allocated yet; don't strip. */
8162 continue;
e717da7e
AM		 8163 else if (s == htab->got
8164 || s == htab->plt
c456f082
AM		 8165 || s == htab->glink
8166 || s == htab->dynbss)
65f38f15
AM		 8167 {
8168 /* Strip this section if we don't need it; see the
8169 comment below. */
5bd4f169 8170 }
0112cd26 8171 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
5bd4f169 8172 {
c456f082 8173 if (s->size != 0)
5bd4f169 8174 {
4ce794b7 8175 if (s != htab->relplt)
b34976b6 8176 relocs = TRUE;
5bd4f169
AM		 8177
8178 /* We use the reloc_count field as a counter if we need
8179 to copy relocs into the output file. */
8180 s->reloc_count = 0;
8181 }
8182 }
65f38f15 8183 else
5bd4f169
AM		 8184 {
8185 /* It's not one of our sections, so don't allocate space. */
8186 continue;
8187 }
8188
eea6121a 8189 if (s->size == 0)
5bd4f169 8190 {
c456f082
AM		 8191 /* If we don't need this section, strip it from the
8192 output file. This is mostly to handle .rela.bss and
8193 .rela.plt. We must create both sections in
8194 create_dynamic_sections, because they must be created
8195 before the linker maps input sections to output
8196 sections. The linker does that before
8197 adjust_dynamic_symbol is called, and it is that
8198 function which decides whether anything needs to go
8199 into these sections. */
8423293d 8200 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 8201 continue;
8202 }
8203
c456f082 8204 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 8205 continue;
8206
65f38f15
AM		 8207 /* Allocate memory for the section contents. We use bfd_zalloc
8208 here in case unused entries are not reclaimed before the
8209 section's contents are written out. This should not happen,
411e1bfb
AM		 8210 but this way if it does we get a R_PPC64_NONE reloc in .rela
8211 sections instead of garbage.
8212 We also rely on the section contents being zero when writing
8213 the GOT. */
eea6121a 8214 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 8215 if (s->contents == NULL)
b34976b6 8216 return FALSE;
5bd4f169
AM		 8217 }
8218
e717da7e
AM		 8219 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8220 {
0c8d6e5c 8221 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 8222 continue;
8223
e717da7e
AM		 8224 s = ppc64_elf_tdata (ibfd)->got;
8225 if (s != NULL && s != htab->got)
8226 {
eea6121a 8227 if (s->size == 0)
8423293d 8228 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8229 else
8230 {
eea6121a 8231 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8232 if (s->contents == NULL)
8233 return FALSE;
8234 }
8235 }
8236 s = ppc64_elf_tdata (ibfd)->relgot;
8237 if (s != NULL)
8238 {
eea6121a 8239 if (s->size == 0)
8423293d 8240 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 8241 else
8242 {
eea6121a 8243 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 8244 if (s->contents == NULL)
8245 return FALSE;
8246 relocs = TRUE;
8247 s->reloc_count = 0;
8248 }
8249 }
8250 }
8251
e86ce104 8252 if (htab->elf.dynamic_sections_created)
5bd4f169
AM		 8253 {
8254 /* Add some entries to the .dynamic section. We fill in the
8255 values later, in ppc64_elf_finish_dynamic_sections, but we
8256 must add the entries now so that we get the correct size for
8257 the .dynamic section. The DT_DEBUG entry is filled in by the
8258 dynamic linker and used by the debugger. */
dc810e39 8259#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8260 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8261
36af4a4e 8262 if (info->executable)
5bd4f169 8263 {
dc810e39 8264 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8265 return FALSE;
5bd4f169
AM		 8266 }
8267
eea6121a 8268 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 8269 {
dc810e39
AM		 8270 if (!add_dynamic_entry (DT_PLTGOT, 0)
8271 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8272 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 8273 || !add_dynamic_entry (DT_JMPREL, 0)
8274 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 8275 return FALSE;
5bd4f169
AM		 8276 }
8277
19397422
AM		 8278 if (NO_OPD_RELOCS)
8279 {
8280 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
8281 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 8282 return FALSE;
19397422
AM		 8283 }
8284
5bd4f169
AM		 8285 if (relocs)
8286 {
dc810e39
AM		 8287 if (!add_dynamic_entry (DT_RELA, 0)
8288 || !add_dynamic_entry (DT_RELASZ, 0)
8289 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 8290 return FALSE;
5bd4f169 8291
65f38f15
AM		 8292 /* If any dynamic relocs apply to a read-only section,
8293 then we need a DT_TEXTREL entry. */
248866a8 8294 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 8295 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 8296
65f38f15 8297 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 8298 {
65f38f15 8299 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8300 return FALSE;
5bd4f169 8301 }
5bd4f169 8302 }
5bd4f169 8303 }
65f38f15 8304#undef add_dynamic_entry
5bd4f169 8305
b34976b6 8306 return TRUE;
5bd4f169
AM		 8307}
8308
721956f4 8309/* Determine the type of stub needed, if any, for a call. */
5bd4f169 8310
4ce794b7
AM		 8311static inline enum ppc_stub_type
8312ppc_type_of_stub (asection *input_sec,
8313 const Elf_Internal_Rela *rel,
8314 struct ppc_link_hash_entry **hash,
8315 bfd_vma destination)
5bd4f169 8316{
721956f4
AM		 8317 struct ppc_link_hash_entry *h = *hash;
8318 bfd_vma location;
8319 bfd_vma branch_offset;
8320 bfd_vma max_branch_offset;
4ce794b7 8321 enum elf_ppc64_reloc_type r_type;
5bd4f169 8322
721956f4
AM		 8323 if (h != NULL)
8324 {
7fe2b9a6
AM		 8325 struct ppc_link_hash_entry *fdh = h;
8326 if (fdh->oh != NULL
8327 && fdh->oh->is_func_descriptor)
8328 fdh = fdh->oh;
8387904d 8329
7fe2b9a6 8330 if (fdh->elf.dynindx != -1)
5bd4f169 8331 {
411e1bfb 8332 struct plt_entry *ent;
8387904d 8333
7fe2b9a6 8334 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 8335 if (ent->addend == rel->r_addend
8336 && ent->plt.offset != (bfd_vma) -1)
8337 {
7fe2b9a6 8338 *hash = fdh;
411e1bfb
AM		 8339 return ppc_stub_plt_call;
8340 }
5bd4f169
AM		 8341 }
8342
7fe2b9a6
AM		 8343 /* Here, we know we don't have a plt entry. If we don't have a
8344 either a defined function descriptor or a defined entry symbol
8345 in a regular object file, then it is pointless trying to make
8346 any other type of stub. */
8347 if (!((fdh->elf.root.type == bfd_link_hash_defined
8348 || fdh->elf.root.type == bfd_link_hash_defweak)
8349 && fdh->elf.root.u.def.section->output_section != NULL)
8350 && !((h->elf.root.type == bfd_link_hash_defined
8351 || h->elf.root.type == bfd_link_hash_defweak)
8352 && h->elf.root.u.def.section->output_section != NULL))
721956f4 8353 return ppc_stub_none;
5d1634d7 8354 }
5d1634d7 8355
721956f4
AM		 8356 /* Determine where the call point is. */
8357 location = (input_sec->output_offset
8358 + input_sec->output_section->vma
8359 + rel->r_offset);
5d1634d7 8360
721956f4
AM		 8361 branch_offset = destination - location;
8362 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 8363
721956f4
AM		 8364 /* Determine if a long branch stub is needed. */
8365 max_branch_offset = 1 << 25;
4ce794b7 8366 if (r_type != R_PPC64_REL24)
721956f4 8367 max_branch_offset = 1 << 15;
5d1634d7 8368
721956f4
AM		 8369 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
8370 /* We need a stub. Figure out whether a long_branch or plt_branch
8371 is needed later. */
8372 return ppc_stub_long_branch;
5d1634d7 8373
721956f4 8374 return ppc_stub_none;
5d1634d7
AM		 8375}
8376
8377/* Build a .plt call stub. */
8378
4ce794b7 8379static inline bfd_byte *
176a0d42 8380build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r)
5d1634d7
AM		 8381{
8382#define PPC_LO(v) ((v) & 0xffff)
8383#define PPC_HI(v) (((v) >> 16) & 0xffff)
8384#define PPC_HA(v) PPC_HI ((v) + 0x8000)
8385
ac2df442
AM		 8386 if (PPC_HA (offset) != 0)
8387 {
176a0d42
AM		 8388 if (r != NULL)
8389 {
8390 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8391 r[1].r_offset = r[0].r_offset + 8;
8392 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8393 r[1].r_addend = r[0].r_addend;
8394 if (PPC_HA (offset + 16) != PPC_HA (offset))
8395 {
8396 r[2].r_offset = r[1].r_offset + 4;
8397 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
8398 r[2].r_addend = r[0].r_addend;
8399 }
8400 else
8401 {
8402 r[2].r_offset = r[1].r_offset + 8;
8403 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8404 r[2].r_addend = r[0].r_addend + 8;
8405 r[3].r_offset = r[2].r_offset + 4;
8406 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8407 r[3].r_addend = r[0].r_addend + 16;
8408 }
8409 }
ac2df442
AM		 8410 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
8411 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8412 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
8413 if (PPC_HA (offset + 16) != PPC_HA (offset))
8414 {
8415 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
8416 offset = 0;
8417 }
8418 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8419 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
8420 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
8421 bfd_put_32 (obfd, BCTR, p), p += 4;
8422 }
8423 else
8424 {
176a0d42
AM		 8425 if (r != NULL)
8426 {
8427 r[0].r_offset += 4;
8428 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8429 if (PPC_HA (offset + 16) != PPC_HA (offset))
8430 {
8431 r[1].r_offset = r[0].r_offset + 4;
8432 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
8433 r[1].r_addend = r[0].r_addend;
8434 }
8435 else
8436 {
8437 r[1].r_offset = r[0].r_offset + 8;
8438 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8439 r[1].r_addend = r[0].r_addend + 16;
8440 r[2].r_offset = r[1].r_offset + 4;
8441 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8442 r[2].r_addend = r[0].r_addend + 8;
8443 }
8444 }
ac2df442
AM		 8445 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
8446 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
8447 if (PPC_HA (offset + 16) != PPC_HA (offset))
8448 {
8449 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
8450 offset = 0;
8451 }
8452 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
8453 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
8454 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
8455 bfd_put_32 (obfd, BCTR, p), p += 4;
8456 }
5d1634d7
AM		 8457 return p;
8458}
8459
176a0d42
AM		 8460static Elf_Internal_Rela *
8461get_relocs (asection *sec, int count)
8462{
8463 Elf_Internal_Rela *relocs;
8464 struct bfd_elf_section_data *elfsec_data;
8465
8466 elfsec_data = elf_section_data (sec);
8467 relocs = elfsec_data->relocs;
8468 if (relocs == NULL)
8469 {
8470 bfd_size_type relsize;
8471 relsize = sec->reloc_count * sizeof (*relocs);
8472 relocs = bfd_alloc (sec->owner, relsize);
8473 if (relocs == NULL)
8474 return NULL;
8475 elfsec_data->relocs = relocs;
8476 elfsec_data->rel_hdr.sh_size = (sec->reloc_count
8477 * sizeof (Elf64_External_Rela));
8478 elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela);
8479 sec->reloc_count = 0;
8480 }
8481 relocs += sec->reloc_count;
8482 sec->reloc_count += count;
8483 return relocs;
8484}
8485
b34976b6 8486static bfd_boolean
4ce794b7 8487ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 8488{
721956f4
AM		 8489 struct ppc_stub_hash_entry *stub_entry;
8490 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 8491 struct bfd_link_info *info;
8492 struct ppc_link_hash_table *htab;
721956f4
AM		 8493 bfd_byte *loc;
8494 bfd_byte *p;
411e1bfb 8495 struct plt_entry *ent;
ee75fd95 8496 bfd_vma dest, off;
721956f4 8497 int size;
176a0d42 8498 Elf_Internal_Rela *r;
5d1634d7 8499
721956f4
AM		 8500 /* Massage our args to the form they really have. */
8501 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 8502 info = in_arg;
5d1634d7 8503
5d1634d7
AM		 8504 htab = ppc_hash_table (info);
8505
721956f4 8506 /* Make a note of the offset within the stubs for this entry. */
eea6121a 8507 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 8508 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 8509
4ce794b7 8510 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 8511 switch (stub_entry->stub_type)
5d1634d7 8512 {
721956f4 8513 case ppc_stub_long_branch:
ad8e1ba5 8514 case ppc_stub_long_branch_r2off:
721956f4 8515 /* Branches are relative. This is where we are going to. */
ee75fd95
AM		 8516 off = dest = (stub_entry->target_value
8517 + stub_entry->target_section->output_offset
8518 + stub_entry->target_section->output_section->vma);
5d1634d7 8519
721956f4
AM		 8520 /* And this is where we are coming from. */
8521 off -= (stub_entry->stub_offset
97b639ba
AM		 8522 + stub_entry->stub_sec->output_offset
8523 + stub_entry->stub_sec->output_section->vma);
e86ce104 8524
ac2df442
AM		 8525 size = 4;
8526 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5
AM		 8527 {
8528 bfd_vma r2off;
8529
8530 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8531 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8532 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8533 loc += 4;
ac2df442
AM		 8534 size = 12;
8535 if (PPC_HA (r2off) != 0)
8536 {
8537 size = 16;
8538 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8539 loc += 4;
8540 }
97b639ba 8541 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 8542 loc += 4;
ac2df442 8543 off -= size - 4;
ad8e1ba5 8544 }
97b639ba 8545 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 8546
5c3dead3
AM		 8547 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8548 {
8549 (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"),
8550 stub_entry->root.string);
8551 htab->stub_error = TRUE;
8552 return FALSE;
8553 }
ee75fd95
AM		 8554
8555 if (info->emitrelocations)
8556 {
176a0d42
AM		 8557 r = get_relocs (stub_entry->stub_sec, 1);
8558 if (r == NULL)
8559 return FALSE;
ee75fd95
AM		 8560 r->r_offset = loc - stub_entry->stub_sec->contents;
8561 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
8562 r->r_addend = dest;
8563 if (stub_entry->h != NULL)
8564 {
8565 struct elf_link_hash_entry **hashes;
8566 unsigned long symndx;
8567 struct ppc_link_hash_entry *h;
8568
8569 hashes = elf_sym_hashes (htab->stub_bfd);
8570 if (hashes == NULL)
8571 {
8572 bfd_size_type hsize;
8573
8574 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
8575 hashes = bfd_zalloc (htab->stub_bfd, hsize);
8576 if (hashes == NULL)
8577 return FALSE;
8578 elf_sym_hashes (htab->stub_bfd) = hashes;
8579 htab->stub_globals = 1;
8580 }
8581 symndx = htab->stub_globals++;
8582 h = stub_entry->h;
8583 hashes[symndx] = &h->elf;
8584 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
8585 if (h->oh != NULL && h->oh->is_func)
8586 h = h->oh;
8587 if (h->elf.root.u.def.section != stub_entry->target_section)
8588 /* H is an opd symbol. The addend must be zero. */
8589 r->r_addend = 0;
8590 else
8591 {
8592 off = (h->elf.root.u.def.value
8593 + h->elf.root.u.def.section->output_offset
8594 + h->elf.root.u.def.section->output_section->vma);
8595 r->r_addend -= off;
8596 }
8597 }
8598 }
721956f4 8599 break;
e86ce104 8600
721956f4 8601 case ppc_stub_plt_branch:
ad8e1ba5 8602 case ppc_stub_plt_branch_r2off:
721956f4
AM		 8603 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8604 stub_entry->root.string + 9,
b34976b6 8605 FALSE, FALSE);
721956f4
AM		 8606 if (br_entry == NULL)
8607 {
8608 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
5c3dead3 8609 stub_entry->root.string);
b34976b6
AM		 8610 htab->stub_error = TRUE;
8611 return FALSE;
721956f4
AM		 8612 }
8613
176a0d42
AM		 8614 dest = (stub_entry->target_value
8615 + stub_entry->target_section->output_offset
8616 + stub_entry->target_section->output_section->vma);
721956f4 8617
176a0d42 8618 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 8619 htab->brlt->contents + br_entry->offset);
721956f4 8620
f94498ff 8621 if (br_entry->iter == htab->stub_iteration)
721956f4 8622 {
f94498ff 8623 br_entry->iter = 0;
84f5d08e 8624
f94498ff 8625 if (htab->relbrlt != NULL)
84f5d08e 8626 {
f94498ff
AM		 8627 /* Create a reloc for the branch lookup table entry. */
8628 Elf_Internal_Rela rela;
8629 bfd_byte *rl;
8630
8631 rela.r_offset = (br_entry->offset
8632 + htab->brlt->output_offset
8633 + htab->brlt->output_section->vma);
8634 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 8635 rela.r_addend = dest;
f94498ff
AM		 8636
8637 rl = htab->relbrlt->contents;
8638 rl += (htab->relbrlt->reloc_count++
8639 * sizeof (Elf64_External_Rela));
8640 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
8641 }
8642 else if (info->emitrelocations)
8643 {
176a0d42
AM		 8644 r = get_relocs (htab->brlt, 1);
8645 if (r == NULL)
8646 return FALSE;
8647 /* brlt, being SEC_LINKER_CREATED does not go through the
8648 normal reloc processing. Symbols and offsets are not
8649 translated from input file to output file form, so
8650 set up the offset per the output file. */
f94498ff
AM		 8651 r->r_offset = (br_entry->offset
8652 + htab->brlt->output_offset
8653 + htab->brlt->output_section->vma);
8654 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 8655 r->r_addend = dest;
84f5d08e 8656 }
84f5d08e 8657 }
721956f4 8658
176a0d42
AM		 8659 dest = (br_entry->offset
8660 + htab->brlt->output_offset
8661 + htab->brlt->output_section->vma);
8662
8663 off = (dest
4ce794b7 8664 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 8665 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8666
ad8e1ba5 8667 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7
AM		 8668 {
8669 (*_bfd_error_handler)
e86ce104 8670 (_("linkage table error against `%s'"),
721956f4 8671 stub_entry->root.string);
5d1634d7 8672 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8673 htab->stub_error = TRUE;
8674 return FALSE;
5d1634d7 8675 }
41bd81ab 8676
176a0d42
AM		 8677 if (info->emitrelocations)
8678 {
8679 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
8680 if (r == NULL)
8681 return FALSE;
8682 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 8683 if (bfd_big_endian (info->output_bfd))
8684 r[0].r_offset += 2;
176a0d42
AM		 8685 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
8686 r[0].r_offset += 4;
8687 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
8688 r[0].r_addend = dest;
8689 if (PPC_HA (off) != 0)
8690 {
8691 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
8692 r[1].r_offset = r[0].r_offset + 4;
8693 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
8694 r[1].r_addend = r[0].r_addend;
8695 }
8696 }
8697
ad8e1ba5
AM		 8698 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8699 {
176a0d42 8700 if (PPC_HA (off) != 0)
ac2df442
AM		 8701 {
8702 size = 16;
176a0d42 8703 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8704 loc += 4;
176a0d42 8705 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM		 8706 }
8707 else
8708 {
8709 size = 12;
176a0d42 8710 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 8711 }
ad8e1ba5
AM		 8712 }
8713 else
8714 {
8715 bfd_vma r2off;
8716
8717 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8718 - htab->stub_group[stub_entry->id_sec->id].toc_off);
97b639ba 8719 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 8720 loc += 4;
ac2df442 8721 size = 20;
176a0d42 8722 if (PPC_HA (off) != 0)
ac2df442
AM		 8723 {
8724 size += 4;
176a0d42 8725 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 8726 loc += 4;
176a0d42 8727 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM		 8728 loc += 4;
8729 }
8730 else
8731 {
176a0d42 8732 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM		 8733 loc += 4;
8734 }
8735
8736 if (PPC_HA (r2off) != 0)
8737 {
8738 size += 4;
8739 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
8740 loc += 4;
8741 }
97b639ba 8742 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM		 8743 }
8744 loc += 4;
97b639ba 8745 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 8746 loc += 4;
97b639ba 8747 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 8748 break;
5d1634d7 8749
721956f4 8750 case ppc_stub_plt_call:
c862ae31
AM		 8751 /* Do the best we can for shared libraries built without
8752 exporting ".foo" for each "foo". This can happen when symbol
8753 versioning scripts strip all bar a subset of symbols. */
8387904d
AM		 8754 if (stub_entry->h->oh != NULL
8755 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined
34814b9f 8756 && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak)
c862ae31
AM		 8757 {
8758 /* Point the symbol at the stub. There may be multiple stubs,
8759 we don't really care; The main thing is to make this sym
8f3bab57
AM		 8760 defined somewhere. Maybe defining the symbol in the stub
8761 section is a silly idea. If we didn't do this, htab->top_id
8762 could disappear. */
34814b9f
AM		 8763 stub_entry->h->oh->elf.root.type = bfd_link_hash_defined;
8764 stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec;
8765 stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset;
c862ae31
AM		 8766 }
8767
721956f4 8768 /* Now build the stub. */
176a0d42 8769 dest = (bfd_vma) -1;
411e1bfb
AM		 8770 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8771 if (ent->addend == stub_entry->addend)
8772 {
176a0d42 8773 dest = ent->plt.offset;
411e1bfb
AM		 8774 break;
8775 }
176a0d42 8776 if (dest >= (bfd_vma) -2)
721956f4
AM		 8777 abort ();
8778
176a0d42
AM		 8779 dest &= ~ (bfd_vma) 1;
8780 dest += (htab->plt->output_offset
8781 + htab->plt->output_section->vma);
8782
8783 off = (dest
8784 - elf_gp (htab->plt->output_section->owner)
8785 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8786
ad8e1ba5 8787 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4
AM		 8788 {
8789 (*_bfd_error_handler)
8790 (_("linkage table error against `%s'"),
8791 stub_entry->h->elf.root.root.string);
8792 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 8793 htab->stub_error = TRUE;
8794 return FALSE;
721956f4
AM		 8795 }
8796
176a0d42
AM		 8797 r = NULL;
8798 if (info->emitrelocations)
8799 {
8800 r = get_relocs (stub_entry->stub_sec,
8801 (2 + (PPC_HA (off) != 0)
8802 + (PPC_HA (off + 16) == PPC_HA (off))));
8803 if (r == NULL)
8804 return FALSE;
8805 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 8806 if (bfd_big_endian (info->output_bfd))
8807 r[0].r_offset += 2;
176a0d42
AM		 8808 r[0].r_addend = dest;
8809 }
8810 p = build_plt_stub (htab->stub_bfd, loc, off, r);
721956f4
AM		 8811 size = p - loc;
8812 break;
8813
8814 default:
8815 BFD_FAIL ();
b34976b6 8816 return FALSE;
721956f4
AM		 8817 }
8818
eea6121a 8819 stub_entry->stub_sec->size += size;
97b639ba 8820
ee75fd95 8821 if (htab->emit_stub_syms)
97b639ba
AM		 8822 {
8823 struct elf_link_hash_entry *h;
ee75fd95
AM		 8824 size_t len1, len2;
8825 char *name;
8826 const char *const stub_str[] = { "long_branch",
8827 "long_branch_r2off",
8828 "plt_branch",
8829 "plt_branch_r2off",
8830 "plt_call" };
8831
8832 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
8833 len2 = strlen (stub_entry->root.string);
8834 name = bfd_malloc (len1 + len2 + 2);
8835 if (name == NULL)
8836 return FALSE;
8837 memcpy (name, stub_entry->root.string, 9);
8838 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
8839 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
8840 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 8841 if (h == NULL)
8842 return FALSE;
8843 if (h->root.type == bfd_link_hash_new)
8844 {
8845 h->root.type = bfd_link_hash_defined;
8846 h->root.u.def.section = stub_entry->stub_sec;
8847 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 8848 h->ref_regular = 1;
8849 h->def_regular = 1;
8850 h->ref_regular_nonweak = 1;
8851 h->forced_local = 1;
8852 h->non_elf = 0;
97b639ba
AM		 8853 }
8854 }
8855
b34976b6 8856 return TRUE;
721956f4
AM		 8857}
8858
8859/* As above, but don't actually build the stub. Just bump offset so
8860 we know stub section sizes, and select plt_branch stubs where
8861 long_branch stubs won't do. */
8862
b34976b6 8863static bfd_boolean
4ce794b7 8864ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 8865{
8866 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 8867 struct bfd_link_info *info;
721956f4
AM		 8868 struct ppc_link_hash_table *htab;
8869 bfd_vma off;
8870 int size;
8871
8872 /* Massage our args to the form they really have. */
8873 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 8874 info = in_arg;
8875
8876 htab = ppc_hash_table (info);
721956f4
AM		 8877
8878 if (stub_entry->stub_type == ppc_stub_plt_call)
8879 {
411e1bfb 8880 struct plt_entry *ent;
58ac9f71 8881 off = (bfd_vma) -1;
411e1bfb
AM		 8882 for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next)
8883 if (ent->addend == stub_entry->addend)
8884 {
8885 off = ent->plt.offset & ~(bfd_vma) 1;
8886 break;
8887 }
58ac9f71 8888 if (off >= (bfd_vma) -2)
411e1bfb 8889 abort ();
4ce794b7
AM		 8890 off += (htab->plt->output_offset
8891 + htab->plt->output_section->vma
8892 - elf_gp (htab->plt->output_section->owner)
ad8e1ba5 8893 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 8894
ad8e1ba5 8895 size = PLT_CALL_STUB_SIZE;
ac2df442
AM		 8896 if (PPC_HA (off) == 0)
8897 size -= 4;
4ce794b7 8898 if (PPC_HA (off + 16) != PPC_HA (off))
721956f4 8899 size += 4;
176a0d42
AM		 8900 if (info->emitrelocations)
8901 {
8902 stub_entry->stub_sec->reloc_count
8903 += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off));
8904 stub_entry->stub_sec->flags |= SEC_RELOC;
8905 }
721956f4
AM		 8906 }
8907 else
8908 {
ad8e1ba5
AM		 8909 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8910 variants. */
ac2df442
AM		 8911 bfd_vma r2off = 0;
8912
721956f4
AM		 8913 off = (stub_entry->target_value
8914 + stub_entry->target_section->output_offset
8915 + stub_entry->target_section->output_section->vma);
eea6121a 8916 off -= (stub_entry->stub_sec->size
721956f4
AM		 8917 + stub_entry->stub_sec->output_offset
8918 + stub_entry->stub_sec->output_section->vma);
8919
ad8e1ba5
AM		 8920 /* Reset the stub type from the plt variant in case we now
8921 can reach with a shorter stub. */
8922 if (stub_entry->stub_type >= ppc_stub_plt_branch)
8923 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
8924
8925 size = 4;
8926 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
8927 {
ac2df442
AM		 8928 r2off = (htab->stub_group[stub_entry->target_section->id].toc_off
8929 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8930 size = 12;
8931 if (PPC_HA (r2off) != 0)
8932 size = 16;
8933 off -= size - 4;
ad8e1ba5
AM		 8934 }
8935
8936 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM		 8937 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
8938 {
8939 struct ppc_branch_hash_entry *br_entry;
8940
8941 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
8942 stub_entry->root.string + 9,
b34976b6 8943 TRUE, FALSE);
721956f4
AM		 8944 if (br_entry == NULL)
8945 {
8946 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
5c3dead3 8947 stub_entry->root.string);
b34976b6
AM		 8948 htab->stub_error = TRUE;
8949 return FALSE;
721956f4
AM		 8950 }
8951
8952 if (br_entry->iter != htab->stub_iteration)
8953 {
8954 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 8955 br_entry->offset = htab->brlt->size;
8956 htab->brlt->size += 8;
63bc6f6c 8957
ee75fd95 8958 if (htab->relbrlt != NULL)
eea6121a 8959 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 8960 else if (info->emitrelocations)
8961 {
8962 htab->brlt->reloc_count += 1;
8963 htab->brlt->flags |= SEC_RELOC;
8964 }
721956f4 8965 }
ad8e1ba5
AM		 8966
8967 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 8968 off = (br_entry->offset
8969 + htab->brlt->output_offset
8970 + htab->brlt->output_section->vma
8971 - elf_gp (htab->brlt->output_section->owner)
8972 - htab->stub_group[stub_entry->id_sec->id].toc_off);
8973
176a0d42
AM		 8974 if (info->emitrelocations)
8975 {
8976 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
8977 stub_entry->stub_sec->flags |= SEC_RELOC;
8978 }
8979
ac2df442
AM		 8980 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
8981 {
8982 size = 12;
176a0d42 8983 if (PPC_HA (off) != 0)
ac2df442
AM		 8984 size = 16;
8985 }
8986 else
8987 {
8988 size = 20;
176a0d42 8989 if (PPC_HA (off) != 0)
ac2df442
AM		 8990 size += 4;
8991
8992 if (PPC_HA (r2off) != 0)
8993 size += 4;
8994 }
721956f4 8995 }
84f5d08e
AM		 8996 else if (info->emitrelocations)
8997 {
8998 stub_entry->stub_sec->reloc_count += 1;
8999 stub_entry->stub_sec->flags |= SEC_RELOC;
9000 }
721956f4
AM		 9001 }
9002
eea6121a 9003 stub_entry->stub_sec->size += size;
b34976b6 9004 return TRUE;
721956f4
AM		 9005}
9006
9007/* Set up various things so that we can make a list of input sections
9008 for each output section included in the link. Returns -1 on error,
cedb70c5 9009 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 9010
9011int
4c52953f
AM		 9012ppc64_elf_setup_section_lists (bfd *output_bfd,
9013 struct bfd_link_info *info,
9014 int no_multi_toc)
721956f4
AM		 9015{
9016 bfd *input_bfd;
734b6cf9 9017 int top_id, top_index, id;
721956f4 9018 asection *section;
734b6cf9 9019 asection **input_list;
721956f4
AM		 9020 bfd_size_type amt;
9021 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9022
4c52953f
AM		 9023 htab->no_multi_toc = no_multi_toc;
9024
4ce794b7 9025 if (htab->brlt == NULL)
721956f4
AM		 9026 return 0;
9027
1e2f5b6e 9028 /* Find the top input section id. */
3d6f9012 9029 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM		 9030 input_bfd != NULL;
9031 input_bfd = input_bfd->link_next)
9032 {
721956f4
AM		 9033 for (section = input_bfd->sections;
9034 section != NULL;
9035 section = section->next)
9036 {
9037 if (top_id < section->id)
9038 top_id = section->id;
9039 }
9040 }
721956f4 9041
8f3bab57 9042 htab->top_id = top_id;
721956f4 9043 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 9044 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 9045 if (htab->stub_group == NULL)
9046 return -1;
9047
3d6f9012
AM		 9048 /* Set toc_off for com, und, abs and ind sections. */
9049 for (id = 0; id < 3; id++)
9050 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 9051
3d6f9012 9052 elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd);
734b6cf9
AM		 9053
9054 /* We can't use output_bfd->section_count here to find the top output
9055 section index as some sections may have been removed, and
8423293d 9056 strip_excluded_output_sections doesn't renumber the indices. */
734b6cf9
AM		 9057 for (section = output_bfd->sections, top_index = 0;
9058 section != NULL;
9059 section = section->next)
9060 {
9061 if (top_index < section->index)
9062 top_index = section->index;
9063 }
9064
9065 htab->top_index = top_index;
9066 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 9067 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 9068 htab->input_list = input_list;
9069 if (input_list == NULL)
9070 return -1;
9071
721956f4
AM		 9072 return 1;
9073}
9074
e717da7e
AM		 9075/* The linker repeatedly calls this function for each TOC input section
9076 and linker generated GOT section. Group input bfds such that the toc
9077 within a group is less than 64k in size. Will break with cute linker
9078 scripts that play games with dot in the output toc section. */
ad8e1ba5
AM		 9079
9080void
4ce794b7 9081ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 9082{
9083 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9084
4c52953f
AM		 9085 if (!htab->no_multi_toc)
9086 {
9087 bfd_vma addr = isec->output_offset + isec->output_section->vma;
9088 bfd_vma off = addr - htab->toc_curr;
9089
9090 if (off + isec->size > 0x10000)
9091 htab->toc_curr = addr;
99877b66 9092
4c52953f
AM		 9093 elf_gp (isec->owner) = (htab->toc_curr
9094 - elf_gp (isec->output_section->owner)
9095 + TOC_BASE_OFF);
9096 }
ad8e1ba5
AM		 9097}
9098
9099/* Called after the last call to the above function. */
9100
9101void
4c52953f 9102ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info)
ad8e1ba5
AM		 9103{
9104 struct ppc_link_hash_table *htab = ppc_hash_table (info);
ad8e1ba5 9105
4c52953f
AM		 9106 htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd);
9107
ad8e1ba5
AM		 9108 /* toc_curr tracks the TOC offset used for code sections below in
9109 ppc64_elf_next_input_section. Start off at 0x8000. */
3d6f9012 9110 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 9111}
9112
9b5ecbd0
AM		 9113/* No toc references were found in ISEC. If the code in ISEC makes no
9114 calls, then there's no need to use toc adjusting stubs when branching
9115 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 9116 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
9117 needed, and 2 if a cyclical call-graph was found but no other reason
9118 for a stub was detected. If called from the top level, a return of
9119 2 means the same as a return of 0. */
9b5ecbd0
AM		 9120
9121static int
4ce794b7 9122toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 9123{
4c52953f
AM		 9124 Elf_Internal_Rela *relstart, *rel;
9125 Elf_Internal_Sym *local_syms;
9b5ecbd0 9126 int ret;
4c52953f 9127 struct ppc_link_hash_table *htab;
9b5ecbd0 9128
772119ce
AM		 9129 /* We know none of our code bearing sections will need toc stubs. */
9130 if ((isec->flags & SEC_LINKER_CREATED) != 0)
9131 return 0;
9132
eea6121a 9133 if (isec->size == 0)
082c50f8
AM		 9134 return 0;
9135
4c52953f
AM		 9136 if (isec->output_section == NULL)
9137 return 0;
9138
4c52953f
AM		 9139 if (isec->reloc_count == 0)
9140 return 0;
9141
9142 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
9143 info->keep_memory);
9144 if (relstart == NULL)
9145 return -1;
9146
9147 /* Look for branches to outside of this section. */
9148 local_syms = NULL;
9149 ret = 0;
9150 htab = ppc_hash_table (info);
9151 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
9b5ecbd0 9152 {
4c52953f
AM		 9153 enum elf_ppc64_reloc_type r_type;
9154 unsigned long r_symndx;
9155 struct elf_link_hash_entry *h;
90aecf7a 9156 struct ppc_link_hash_entry *eh;
4c52953f
AM		 9157 Elf_Internal_Sym *sym;
9158 asection *sym_sec;
74f0fb50 9159 struct _opd_sec_data *opd;
4c52953f
AM		 9160 bfd_vma sym_value;
9161 bfd_vma dest;
9162
9163 r_type = ELF64_R_TYPE (rel->r_info);
9164 if (r_type != R_PPC64_REL24
9165 && r_type != R_PPC64_REL14
9166 && r_type != R_PPC64_REL14_BRTAKEN
9167 && r_type != R_PPC64_REL14_BRNTAKEN)
9168 continue;
9169
9170 r_symndx = ELF64_R_SYM (rel->r_info);
9171 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
9172 isec->owner))
9b5ecbd0 9173 {
4c52953f
AM		 9174 ret = -1;
9175 break;
9b5ecbd0 9176 }
9b5ecbd0 9177
2917689a 9178 /* Calls to dynamic lib functions go through a plt call stub
90aecf7a
AM		 9179 that uses r2. */
9180 eh = (struct ppc_link_hash_entry *) h;
9181 if (eh != NULL
9182 && (eh->elf.plt.plist != NULL
9183 || (eh->oh != NULL
9184 && eh->oh->elf.plt.plist != NULL)))
2917689a 9185 {
90aecf7a
AM		 9186 ret = 1;
9187 break;
2917689a
AM		 9188 }
9189
90aecf7a
AM		 9190 if (sym_sec == NULL)
9191 /* Ignore other undefined symbols. */
9192 continue;
9193
2917689a
AM		 9194 /* Assume branches to other sections not included in the link need
9195 stubs too, to cover -R and absolute syms. */
4c52953f
AM		 9196 if (sym_sec->output_section == NULL)
9197 {
9198 ret = 1;
9199 break;
9200 }
9201
9202 if (h == NULL)
9203 sym_value = sym->st_value;
9204 else
9205 {
9206 if (h->root.type != bfd_link_hash_defined
9207 && h->root.type != bfd_link_hash_defweak)
9208 abort ();
9209 sym_value = h->root.u.def.value;
9210 }
9211 sym_value += rel->r_addend;
9212
9213 /* If this branch reloc uses an opd sym, find the code section. */
74f0fb50
AM		 9214 opd = get_opd_info (sym_sec);
9215 if (opd != NULL)
4c52953f 9216 {
74f0fb50 9217 if (h == NULL && opd->adjust != NULL)
4c52953f
AM		 9218 {
9219 long adjust;
9220
74f0fb50 9221 adjust = opd->adjust[sym->st_value / 8];
4c52953f
AM		 9222 if (adjust == -1)
9223 /* Assume deleted functions won't ever be called. */
9224 continue;
9225 sym_value += adjust;
9226 }
9227
9228 dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
9229 if (dest == (bfd_vma) -1)
9230 continue;
9231 }
9232 else
9233 dest = (sym_value
9234 + sym_sec->output_offset
9235 + sym_sec->output_section->vma);
9236
9237 /* Ignore branch to self. */
9238 if (sym_sec == isec)
9239 continue;
9240
9241 /* If the called function uses the toc, we need a stub. */
9242 if (sym_sec->has_toc_reloc
9243 || sym_sec->makes_toc_func_call)
9244 {
9245 ret = 1;
9246 break;
9247 }
9248
9249 /* Assume any branch that needs a long branch stub might in fact
9250 need a plt_branch stub. A plt_branch stub uses r2. */
9251 else if (dest - (isec->output_offset
9252 + isec->output_section->vma
9253 + rel->r_offset) + (1 << 25) >= (2 << 25))
9b5ecbd0
AM		 9254 {
9255 ret = 1;
9256 break;
9257 }
4c52953f
AM		 9258
9259 /* If calling back to a section in the process of being tested, we
9260 can't say for sure that no toc adjusting stubs are needed, so
9261 don't return zero. */
9262 else if (sym_sec->call_check_in_progress)
9263 ret = 2;
9264
9265 /* Branches to another section that itself doesn't have any TOC
9266 references are OK. Recursively call ourselves to check. */
9267 else if (sym_sec->id <= htab->top_id
9268 && htab->stub_group[sym_sec->id].toc_off == 0)
9269 {
9270 int recur;
9271
9272 /* Mark current section as indeterminate, so that other
9273 sections that call back to current won't be marked as
9274 known. */
9275 isec->call_check_in_progress = 1;
9276 recur = toc_adjusting_stub_needed (info, sym_sec);
9277 isec->call_check_in_progress = 0;
9278
9279 if (recur < 0)
9280 {
9281 /* An error. Exit. */
9282 ret = -1;
9283 break;
9284 }
9285 else if (recur <= 1)
9286 {
9287 /* Known result. Mark as checked and set section flag. */
9288 htab->stub_group[sym_sec->id].toc_off = 1;
9289 if (recur != 0)
9290 {
9291 sym_sec->makes_toc_func_call = 1;
9292 ret = 1;
9293 break;
9294 }
9295 }
9296 else
9297 {
9298 /* Unknown result. Continue checking. */
9299 ret = 2;
9300 }
9301 }
9b5ecbd0
AM		 9302 }
9303
4c52953f 9304 if (local_syms != NULL
0ffa91dd 9305 && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms))
4c52953f
AM		 9306 free (local_syms);
9307 if (elf_section_data (isec)->relocs != relstart)
9308 free (relstart);
9309
9b5ecbd0
AM		 9310 return ret;
9311}
9312
721956f4
AM		 9313/* The linker repeatedly calls this function for each input section,
9314 in the order that input sections are linked into output sections.
9315 Build lists of input sections to determine groupings between which
9316 we may insert linker stubs. */
9317
9b5ecbd0 9318bfd_boolean
4ce794b7 9319ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 9320{
9321 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9322
734b6cf9
AM		 9323 if ((isec->output_section->flags & SEC_CODE) != 0
9324 && isec->output_section->index <= htab->top_index)
721956f4 9325 {
734b6cf9 9326 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 9327 /* Steal the link_sec pointer for our list. */
721956f4 9328#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 9329 /* This happens to make the list in reverse order,
9330 which is what we want. */
734b6cf9
AM		 9331 PREV_SEC (isec) = *list;
9332 *list = isec;
721956f4 9333 }
ad8e1ba5 9334
4c52953f 9335 if (htab->multi_toc_needed)
9b5ecbd0 9336 {
4c52953f
AM		 9337 /* If a code section has a function that uses the TOC then we need
9338 to use the right TOC (obviously). Also, make sure that .opd gets
9339 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM		 9340 can't find their function symbol (shouldn't ever happen now).
9341 Also specially treat .fixup for the linux kernel. .fixup
9342 contains branches, but only back to the function that hit an
9343 exception. */
9344 if (isec->has_toc_reloc
9345 || (isec->flags & SEC_CODE) == 0
9346 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM		 9347 {
9348 if (elf_gp (isec->owner) != 0)
9349 htab->toc_curr = elf_gp (isec->owner);
9350 }
9351 else if (htab->stub_group[isec->id].toc_off == 0)
9352 {
9353 int ret = toc_adjusting_stub_needed (info, isec);
9354 if (ret < 0)
9355 return FALSE;
9356 else
9357 isec->makes_toc_func_call = ret & 1;
9358 }
9b5ecbd0 9359 }
ad8e1ba5
AM		 9360
9361 /* Functions that don't use the TOC can belong in any TOC group.
9362 Use the last TOC base. This happens to make _init and _fini
9363 pasting work. */
9364 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 9365 return TRUE;
721956f4
AM		 9366}
9367
9368/* See whether we can group stub sections together. Grouping stub
9369 sections may result in fewer stubs. More importantly, we need to
9370 put all .init* and .fini* stubs at the beginning of the .init or
9371 .fini output sections respectively, because glibc splits the
9372 _init and _fini functions into multiple parts. Putting a stub in
9373 the middle of a function is not a good idea. */
9374
9375static void
4ce794b7
AM		 9376group_sections (struct ppc_link_hash_table *htab,
9377 bfd_size_type stub_group_size,
9378 bfd_boolean stubs_always_before_branch)
721956f4 9379{
7c8fe5c4
AM		 9380 asection **list;
9381 bfd_size_type stub14_group_size;
9382 bfd_boolean suppress_size_errors;
9383
9384 suppress_size_errors = FALSE;
9385 stub14_group_size = stub_group_size;
9386 if (stub_group_size == 1)
9387 {
9388 /* Default values. */
9389 if (stubs_always_before_branch)
9390 {
9391 stub_group_size = 0x1e00000;
9392 stub14_group_size = 0x7800;
9393 }
9394 else
9395 {
9396 stub_group_size = 0x1c00000;
9397 stub14_group_size = 0x7000;
9398 }
9399 suppress_size_errors = TRUE;
9400 }
9401
9402 list = htab->input_list + htab->top_index;
734b6cf9 9403 do
721956f4 9404 {
734b6cf9
AM		 9405 asection *tail = *list;
9406 while (tail != NULL)
721956f4 9407 {
734b6cf9
AM		 9408 asection *curr;
9409 asection *prev;
9410 bfd_size_type total;
9411 bfd_boolean big_sec;
9412 bfd_vma curr_toc;
9413
9414 curr = tail;
eea6121a 9415 total = tail->size;
7c8fe5c4
AM		 9416 big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch
9417 ? stub14_group_size : stub_group_size);
9418 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 9419 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
9420 tail->owner, tail);
734b6cf9
AM		 9421 curr_toc = htab->stub_group[tail->id].toc_off;
9422
9423 while ((prev = PREV_SEC (curr)) != NULL
9424 && ((total += curr->output_offset - prev->output_offset)
7c8fe5c4
AM		 9425 < (ppc64_elf_section_data (prev)->has_14bit_branch
9426 ? stub14_group_size : stub_group_size))
ad8e1ba5 9427 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 9428 curr = prev;
9429
9430 /* OK, the size from the start of CURR to the end is less
9431 than stub_group_size and thus can be handled by one stub
9432 section. (or the tail section is itself larger than
9433 stub_group_size, in which case we may be toast.) We
9434 should really be keeping track of the total size of stubs
9435 added here, as stubs contribute to the final output
9436 section size. That's a little tricky, and this way will
9437 only break if stubs added make the total size more than
9438 2^25, ie. for the default stub_group_size, if stubs total
9439 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9440 do
721956f4
AM		 9441 {
9442 prev = PREV_SEC (tail);
734b6cf9 9443 /* Set up this stub group. */
721956f4
AM		 9444 htab->stub_group[tail->id].link_sec = curr;
9445 }
734b6cf9
AM		 9446 while (tail != curr && (tail = prev) != NULL);
9447
9448 /* But wait, there's more! Input sections up to stub_group_size
9449 bytes before the stub section can be handled by it too.
9450 Don't do this if we have a really large section after the
9451 stubs, as adding more stubs increases the chance that
9452 branches may not reach into the stub section. */
9453 if (!stubs_always_before_branch && !big_sec)
9454 {
9455 total = 0;
9456 while (prev != NULL
9457 && ((total += tail->output_offset - prev->output_offset)
7c8fe5c4
AM		 9458 < (ppc64_elf_section_data (prev)->has_14bit_branch
9459 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 9460 && htab->stub_group[prev->id].toc_off == curr_toc)
9461 {
9462 tail = prev;
9463 prev = PREV_SEC (tail);
9464 htab->stub_group[tail->id].link_sec = curr;
9465 }
9466 }
9467 tail = prev;
721956f4
AM		 9468 }
9469 }
734b6cf9
AM		 9470 while (list-- != htab->input_list);
9471 free (htab->input_list);
721956f4
AM		 9472#undef PREV_SEC
9473}
9474
721956f4
AM		 9475/* Determine and set the size of the stub section for a final link.
9476
9477 The basic idea here is to examine all the relocations looking for
9478 PC-relative calls to a target that is unreachable with a "bl"
9479 instruction. */
9480
b34976b6 9481bfd_boolean
4ce794b7 9482ppc64_elf_size_stubs (bfd *output_bfd,
4ce794b7
AM		 9483 struct bfd_link_info *info,
9484 bfd_signed_vma group_size,
9485 asection *(*add_stub_section) (const char *, asection *),
9486 void (*layout_sections_again) (void))
721956f4
AM		 9487{
9488 bfd_size_type stub_group_size;
b34976b6 9489 bfd_boolean stubs_always_before_branch;
721956f4
AM		 9490 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9491
9492 /* Stash our params away. */
721956f4
AM		 9493 htab->add_stub_section = add_stub_section;
9494 htab->layout_sections_again = layout_sections_again;
9495 stubs_always_before_branch = group_size < 0;
9496 if (group_size < 0)
9497 stub_group_size = -group_size;
9498 else
9499 stub_group_size = group_size;
721956f4
AM		 9500
9501 group_sections (htab, stub_group_size, stubs_always_before_branch);
9502
721956f4
AM		 9503 while (1)
9504 {
9505 bfd *input_bfd;
9506 unsigned int bfd_indx;
9507 asection *stub_sec;
721956f4
AM		 9508
9509 htab->stub_iteration += 1;
721956f4
AM		 9510
9511 for (input_bfd = info->input_bfds, bfd_indx = 0;
9512 input_bfd != NULL;
9513 input_bfd = input_bfd->link_next, bfd_indx++)
9514 {
9515 Elf_Internal_Shdr *symtab_hdr;
9516 asection *section;
6cdc0ccc 9517 Elf_Internal_Sym *local_syms = NULL;
721956f4 9518
0c8d6e5c 9519 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 9520 continue;
9521
721956f4 9522 /* We'll need the symbol table in a second. */
0ffa91dd 9523 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 9524 if (symtab_hdr->sh_info == 0)
9525 continue;
9526
721956f4
AM		 9527 /* Walk over each section attached to the input bfd. */
9528 for (section = input_bfd->sections;
9529 section != NULL;
9530 section = section->next)
9531 {
721956f4 9532 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 9533
9534 /* If there aren't any relocs, then there's nothing more
9535 to do. */
9536 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 9537 || (section->flags & SEC_ALLOC) == 0
9538 || (section->flags & SEC_LOAD) == 0
9539 || (section->flags & SEC_CODE) == 0
721956f4
AM		 9540 || section->reloc_count == 0)
9541 continue;
9542
9543 /* If this section is a link-once section that will be
9544 discarded, then don't create any stubs. */
9545 if (section->output_section == NULL
9546 || section->output_section->owner != output_bfd)
9547 continue;
9548
1e2f5b6e
AM		 9549 /* Get the relocs. */
9550 internal_relocs
4ce794b7 9551 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 9552 info->keep_memory);
721956f4 9553 if (internal_relocs == NULL)
1e2f5b6e 9554 goto error_ret_free_local;
721956f4
AM		 9555
9556 /* Now examine each relocation. */
9557 irela = internal_relocs;
9558 irelaend = irela + section->reloc_count;
9559 for (; irela < irelaend; irela++)
9560 {
4ce794b7
AM		 9561 enum elf_ppc64_reloc_type r_type;
9562 unsigned int r_indx;
721956f4
AM		 9563 enum ppc_stub_type stub_type;
9564 struct ppc_stub_hash_entry *stub_entry;
8387904d 9565 asection *sym_sec, *code_sec;
721956f4
AM		 9566 bfd_vma sym_value;
9567 bfd_vma destination;
8843416a 9568 bfd_boolean ok_dest;
721956f4 9569 struct ppc_link_hash_entry *hash;
8387904d 9570 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 9571 struct elf_link_hash_entry *h;
9572 Elf_Internal_Sym *sym;
721956f4
AM		 9573 char *stub_name;
9574 const asection *id_sec;
74f0fb50 9575 struct _opd_sec_data *opd;
721956f4
AM		 9576
9577 r_type = ELF64_R_TYPE (irela->r_info);
9578 r_indx = ELF64_R_SYM (irela->r_info);
9579
4ce794b7 9580 if (r_type >= R_PPC64_max)
721956f4
AM		 9581 {
9582 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 9583 goto error_ret_free_internal;
721956f4
AM		 9584 }
9585
9586 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 9587 if (r_type != R_PPC64_REL24
9588 && r_type != R_PPC64_REL14
9589 && r_type != R_PPC64_REL14_BRTAKEN
9590 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 9591 continue;
9592
9593 /* Now determine the call target, its name, value,
9594 section. */
411e1bfb
AM		 9595 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9596 r_indx, input_bfd))
9597 goto error_ret_free_internal;
9598 hash = (struct ppc_link_hash_entry *) h;
9599
8843416a 9600 ok_dest = FALSE;
8387904d 9601 fdh = NULL;
7fe2b9a6 9602 sym_value = 0;
411e1bfb 9603 if (hash == NULL)
721956f4 9604 {
411e1bfb 9605 sym_value = sym->st_value;
8843416a 9606 ok_dest = TRUE;
721956f4 9607 }
7fe2b9a6
AM		 9608 else if (hash->elf.root.type == bfd_link_hash_defined
9609 || hash->elf.root.type == bfd_link_hash_defweak)
9610 {
9611 sym_value = hash->elf.root.u.def.value;
9612 if (sym_sec->output_section != NULL)
9613 ok_dest = TRUE;
9614 }
9615 else if (hash->elf.root.type == bfd_link_hash_undefweak
9616 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 9617 {
99877b66 9618 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 9619 use the func descriptor sym instead if it is
9620 defined. */
ceb1f1ef 9621 if (hash->elf.root.root.string[0] == '.'
8387904d
AM		 9622 && (fdh = get_fdh (hash, htab)) != NULL)
9623 {
8387904d
AM		 9624 if (fdh->elf.root.type == bfd_link_hash_defined
9625 || fdh->elf.root.type == bfd_link_hash_defweak)
9626 {
9627 sym_sec = fdh->elf.root.u.def.section;
9628 sym_value = fdh->elf.root.u.def.value;
9629 if (sym_sec->output_section != NULL)
9630 ok_dest = TRUE;
9631 }
99877b66
AM		 9632 else
9633 fdh = NULL;
8387904d 9634 }
7fe2b9a6
AM		 9635 }
9636 else
9637 {
9638 bfd_set_error (bfd_error_bad_value);
9639 goto error_ret_free_internal;
721956f4
AM		 9640 }
9641
8843416a
AM		 9642 destination = 0;
9643 if (ok_dest)
9644 {
9645 sym_value += irela->r_addend;
9646 destination = (sym_value
9647 + sym_sec->output_offset
9648 + sym_sec->output_section->vma);
9649 }
9650
8387904d 9651 code_sec = sym_sec;
74f0fb50
AM		 9652 opd = get_opd_info (sym_sec);
9653 if (opd != NULL)
8387904d
AM		 9654 {
9655 bfd_vma dest;
9656
74f0fb50 9657 if (hash == NULL && opd->adjust != NULL)
8387904d 9658 {
74f0fb50 9659 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 9660 if (adjust == -1)
9661 continue;
9662 sym_value += adjust;
9663 }
9664 dest = opd_entry_value (sym_sec, sym_value,
9665 &code_sec, &sym_value);
9666 if (dest != (bfd_vma) -1)
9667 {
9668 destination = dest;
9669 if (fdh != NULL)
9670 {
9671 /* Fixup old ABI sym to point at code
9672 entry. */
99877b66 9673 hash->elf.root.type = bfd_link_hash_defweak;
8387904d
AM		 9674 hash->elf.root.u.def.section = code_sec;
9675 hash->elf.root.u.def.value = sym_value;
9676 }
9677 }
9678 }
9679
721956f4
AM		 9680 /* Determine what (if any) linker stub is needed. */
9681 stub_type = ppc_type_of_stub (section, irela, &hash,
9682 destination);
ad8e1ba5
AM		 9683
9684 if (stub_type != ppc_stub_plt_call)
9685 {
9686 /* Check whether we need a TOC adjusting stub.
9687 Since the linker pastes together pieces from
9688 different object files when creating the
9689 _init and _fini functions, it may be that a
9690 call to what looks like a local sym is in
9691 fact a call needing a TOC adjustment. */
8387904d
AM		 9692 if (code_sec != NULL
9693 && code_sec->output_section != NULL
9694 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 9695 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 9696 && (code_sec->has_toc_reloc
9697 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 9698 stub_type = ppc_stub_long_branch_r2off;
9699 }
9700
721956f4
AM		 9701 if (stub_type == ppc_stub_none)
9702 continue;
9703
411e1bfb
AM		 9704 /* __tls_get_addr calls might be eliminated. */
9705 if (stub_type != ppc_stub_plt_call
9706 && hash != NULL
8387904d
AM		 9707 && (hash == htab->tls_get_addr
9708 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 9709 && section->has_tls_reloc
9710 && irela != internal_relocs)
9711 {
9712 /* Get tls info. */
e7b938ca 9713 char *tls_mask;
411e1bfb 9714
0d4792f7 9715 if (!get_tls_mask (&tls_mask, NULL, &local_syms,
411e1bfb
AM		 9716 irela - 1, input_bfd))
9717 goto error_ret_free_internal;
e7b938ca 9718 if (*tls_mask != 0)
411e1bfb
AM		 9719 continue;
9720 }
9721
721956f4
AM		 9722 /* Support for grouping stub sections. */
9723 id_sec = htab->stub_group[section->id].link_sec;
9724
9725 /* Get the name of this stub. */
9726 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
9727 if (!stub_name)
9728 goto error_ret_free_internal;
9729
9730 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 9731 stub_name, FALSE, FALSE);
721956f4
AM		 9732 if (stub_entry != NULL)
9733 {
9734 /* The proper stub has already been created. */
9735 free (stub_name);
9736 continue;
9737 }
9738
9739 stub_entry = ppc_add_stub (stub_name, section, htab);
9740 if (stub_entry == NULL)
9741 {
9742 free (stub_name);
6cdc0ccc
AM		 9743 error_ret_free_internal:
9744 if (elf_section_data (section)->relocs == NULL)
9745 free (internal_relocs);
9746 error_ret_free_local:
9747 if (local_syms != NULL
9748 && (symtab_hdr->contents
9749 != (unsigned char *) local_syms))
9750 free (local_syms);
b34976b6 9751 return FALSE;
721956f4
AM		 9752 }
9753
ad8e1ba5 9754 stub_entry->stub_type = stub_type;
721956f4 9755 stub_entry->target_value = sym_value;
8387904d 9756 stub_entry->target_section = code_sec;
721956f4 9757 stub_entry->h = hash;
411e1bfb 9758 stub_entry->addend = irela->r_addend;
ee75fd95
AM		 9759
9760 if (stub_entry->h != NULL)
9761 htab->stub_globals += 1;
721956f4
AM		 9762 }
9763
9764 /* We're done with the internal relocs, free them. */
6cdc0ccc 9765 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 9766 free (internal_relocs);
721956f4 9767 }
6cdc0ccc
AM		 9768
9769 if (local_syms != NULL
9770 && symtab_hdr->contents != (unsigned char *) local_syms)
9771 {
9772 if (!info->keep_memory)
9773 free (local_syms);
9774 else
9775 symtab_hdr->contents = (unsigned char *) local_syms;
9776 }
721956f4
AM		 9777 }
9778
5c3dead3 9779 /* We may have added some stubs. Find out the new size of the
721956f4
AM		 9780 stub sections. */
9781 for (stub_sec = htab->stub_bfd->sections;
9782 stub_sec != NULL;
9783 stub_sec = stub_sec->next)
e717da7e 9784 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 9785 {
5c3dead3 9786 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 9787 stub_sec->size = 0;
9788 stub_sec->reloc_count = 0;
84f5d08e 9789 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 9790 }
eea6121a
AM		 9791
9792 htab->brlt->size = 0;
84f5d08e
AM		 9793 htab->brlt->reloc_count = 0;
9794 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 9795 if (htab->relbrlt != NULL)
eea6121a 9796 htab->relbrlt->size = 0;
721956f4 9797
63bc6f6c 9798 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 9799
176a0d42
AM		 9800 if (info->emitrelocations
9801 && htab->glink != NULL && htab->glink->size != 0)
9802 {
9803 htab->glink->reloc_count = 1;
9804 htab->glink->flags |= SEC_RELOC;
9805 }
9806
5c3dead3
AM		 9807 for (stub_sec = htab->stub_bfd->sections;
9808 stub_sec != NULL;
9809 stub_sec = stub_sec->next)
9810 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9811 && stub_sec->rawsize != stub_sec->size)
9812 break;
9813
9814 /* Exit from this loop when no stubs have been added, and no stubs
9815 have changed size. */
9816 if (stub_sec == NULL)
9817 break;
9818
721956f4
AM		 9819 /* Ask the linker to do its stuff. */
9820 (*htab->layout_sections_again) ();
9821 }
9822
c456f082 9823 /* It would be nice to strip htab->brlt from the output if the
afbe61cf
AM		 9824 section is empty, but it's too late. If we strip sections here,
9825 the dynamic symbol table is corrupted since the section symbol
9826 for the stripped section isn't written. */
721956f4 9827
b34976b6 9828 return TRUE;
721956f4
AM		 9829}
9830
9831/* Called after we have determined section placement. If sections
805fc799 9832 move, we'll be called again. Provide a value for TOCstart. */
721956f4 9833
805fc799 9834bfd_vma
4ce794b7 9835ppc64_elf_toc (bfd *obfd)
721956f4 9836{
805fc799
AM		 9837 asection *s;
9838 bfd_vma TOCstart;
721956f4 9839
805fc799
AM		 9840 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9841 order. The TOC starts where the first of these sections starts. */
9842 s = bfd_get_section_by_name (obfd, ".got");
9843 if (s == NULL)
9844 s = bfd_get_section_by_name (obfd, ".toc");
9845 if (s == NULL)
9846 s = bfd_get_section_by_name (obfd, ".tocbss");
9847 if (s == NULL)
9848 s = bfd_get_section_by_name (obfd, ".plt");
9849 if (s == NULL)
9850 {
9851 /* This may happen for
9852 o references to TOC base (SYM@toc / TOC[tc0]) without a
9853 .toc directive
9854 o bad linker script
9855 o --gc-sections and empty TOC sections
9856
9857 FIXME: Warn user? */
9858
9859 /* Look for a likely section. We probably won't even be
9860 using TOCstart. */
9861 for (s = obfd->sections; s != NULL; s = s->next)
9862 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
9863 == (SEC_ALLOC | SEC_SMALL_DATA))
9864 break;
721956f4 9865 if (s == NULL)
805fc799
AM		 9866 for (s = obfd->sections; s != NULL; s = s->next)
9867 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
9868 == (SEC_ALLOC | SEC_SMALL_DATA))
9869 break;
721956f4 9870 if (s == NULL)
805fc799
AM		 9871 for (s = obfd->sections; s != NULL; s = s->next)
9872 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
9873 break;
721956f4 9874 if (s == NULL)
805fc799
AM		 9875 for (s = obfd->sections; s != NULL; s = s->next)
9876 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
9877 break;
9878 }
721956f4 9879
805fc799
AM		 9880 TOCstart = 0;
9881 if (s != NULL)
9882 TOCstart = s->output_section->vma + s->output_offset;
721956f4 9883
805fc799 9884 return TOCstart;
721956f4
AM		 9885}
9886
9887/* Build all the stubs associated with the current output file.
9888 The stubs are kept in a hash table attached to the main linker
9889 hash table. This function is called via gldelf64ppc_finish. */
9890
b34976b6 9891bfd_boolean
4ce794b7
AM		 9892ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
9893 struct bfd_link_info *info,
9894 char **stats)
5d1634d7
AM		 9895{
9896 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 9897 asection *stub_sec;
5d1634d7 9898 bfd_byte *p;
e717da7e 9899 int stub_sec_count = 0;
5d1634d7 9900
ad8e1ba5 9901 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM		 9902
9903 /* Allocate memory to hold the linker stubs. */
721956f4
AM		 9904 for (stub_sec = htab->stub_bfd->sections;
9905 stub_sec != NULL;
9906 stub_sec = stub_sec->next)
eea6121a
AM		 9907 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
9908 && stub_sec->size != 0)
e717da7e 9909 {
eea6121a
AM		 9910 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
9911 if (stub_sec->contents == NULL)
9912 return FALSE;
9913 /* We want to check that built size is the same as calculated
9914 size. rawsize is a convenient location to use. */
9915 stub_sec->rawsize = stub_sec->size;
9916 stub_sec->size = 0;
e717da7e 9917 }
5d1634d7 9918
23eb7e01 9919 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 9920 {
9f951329 9921 unsigned int indx;
ad8e1ba5 9922 bfd_vma plt0;
9f951329 9923
721956f4 9924 /* Build the .glink plt call stub. */
97b639ba
AM		 9925 if (htab->emit_stub_syms)
9926 {
9927 struct elf_link_hash_entry *h;
468392fb
AM		 9928 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
9929 TRUE, FALSE, FALSE);
97b639ba
AM		 9930 if (h == NULL)
9931 return FALSE;
9932 if (h->root.type == bfd_link_hash_new)
9933 {
9934 h->root.type = bfd_link_hash_defined;
9935 h->root.u.def.section = htab->glink;
ee4bf8d2 9936 h->root.u.def.value = 8;
f5385ebf
AM		 9937 h->ref_regular = 1;
9938 h->def_regular = 1;
9939 h->ref_regular_nonweak = 1;
9940 h->forced_local = 1;
9941 h->non_elf = 0;
97b639ba
AM		 9942 }
9943 }
176a0d42
AM		 9944 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
9945 if (info->emitrelocations)
9946 {
9947 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
9948 if (r == NULL)
9949 return FALSE;
9950 r->r_offset = (htab->glink->output_offset
9951 + htab->glink->output_section->vma);
9952 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
9953 r->r_addend = plt0;
9954 }
4ce794b7 9955 p = htab->glink->contents;
176a0d42 9956 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 9957 bfd_put_64 (htab->glink->owner, plt0, p);
9958 p += 8;
9959 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 9960 p += 4;
ee4bf8d2 9961 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 9962 p += 4;
ee4bf8d2 9963 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 9964 p += 4;
ee4bf8d2 9965 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 9966 p += 4;
ee4bf8d2 9967 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 9968 p += 4;
ee4bf8d2 9969 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 9970 p += 4;
ee4bf8d2 9971 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 9972 p += 4;
4ce794b7 9973 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 9974 p += 4;
4ce794b7 9975 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 9976 p += 4;
4ce794b7 9977 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 9978 p += 4;
4ce794b7 9979 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 9980 p += 4;
ee4bf8d2
AM		 9981 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
9982 {
9983 bfd_put_32 (htab->glink->owner, NOP, p);
9984 p += 4;
9985 }
ad8e1ba5 9986
9f951329
AM		 9987 /* Build the .glink lazy link call stubs. */
9988 indx = 0;
eea6121a 9989 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM		 9990 {
9991 if (indx < 0x8000)
9992 {
4ce794b7 9993 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM		 9994 p += 4;
9995 }
9996 else
9997 {
4ce794b7 9998 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 9999 p += 4;
4ce794b7 10000 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM		 10001 p += 4;
10002 }
4ce794b7 10003 bfd_put_32 (htab->glink->owner,
ee4bf8d2 10004 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 10005 indx++;
9f951329
AM		 10006 p += 4;
10007 }
eea6121a 10008 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 10009 }
5d1634d7 10010
eea6121a 10011 if (htab->brlt->size != 0)
721956f4 10012 {
4ce794b7 10013 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 10014 htab->brlt->size);
4ce794b7 10015 if (htab->brlt->contents == NULL)
b34976b6 10016 return FALSE;
721956f4 10017 }
ee75fd95 10018 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 10019 {
10020 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 10021 htab->relbrlt->size);
63bc6f6c
AM		 10022 if (htab->relbrlt->contents == NULL)
10023 return FALSE;
10024 }
5d1634d7 10025
721956f4
AM		 10026 /* Build the stubs as directed by the stub hash table. */
10027 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 10028
aa8a7074
AM		 10029 if (htab->relbrlt != NULL)
10030 htab->relbrlt->reloc_count = 0;
10031
721956f4
AM		 10032 for (stub_sec = htab->stub_bfd->sections;
10033 stub_sec != NULL;
10034 stub_sec = stub_sec->next)
e717da7e
AM		 10035 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
10036 {
10037 stub_sec_count += 1;
eea6121a 10038 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 10039 break;
10040 }
5d1634d7 10041
721956f4 10042 if (stub_sec != NULL
eea6121a 10043 || htab->glink->rawsize != htab->glink->size)
5d1634d7 10044 {
b34976b6 10045 htab->stub_error = TRUE;
721956f4 10046 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5d1634d7 10047 }
721956f4 10048
d2a300cf
AM		 10049 if (htab->stub_error)
10050 return FALSE;
10051
10052 if (stats != NULL)
10053 {
10054 *stats = bfd_malloc (500);
10055 if (*stats == NULL)
10056 return FALSE;
10057
ee75fd95 10058 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 10059 " branch %lu\n"
10060 " toc adjust %lu\n"
10061 " long branch %lu\n"
10062 " long toc adj %lu\n"
10063 " plt call %lu"),
e717da7e 10064 stub_sec_count,
ee75fd95 10065 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 10066 htab->stub_count[ppc_stub_long_branch - 1],
10067 htab->stub_count[ppc_stub_long_branch_r2off - 1],
10068 htab->stub_count[ppc_stub_plt_branch - 1],
10069 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
10070 htab->stub_count[ppc_stub_plt_call - 1]);
d2a300cf
AM		 10071 }
10072 return TRUE;
5bd4f169
AM		 10073}
10074
99877b66
AM		 10075/* This function undoes the changes made by add_symbol_adjust. */
10076
10077static bfd_boolean
10078undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10079{
10080 struct ppc_link_hash_entry *eh;
10081
10082 if (h->root.type == bfd_link_hash_indirect)
10083 return TRUE;
10084
10085 if (h->root.type == bfd_link_hash_warning)
10086 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10087
10088 eh = (struct ppc_link_hash_entry *) h;
10089 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
10090 return TRUE;
10091
10092 eh->elf.root.type = bfd_link_hash_undefined;
10093 return TRUE;
10094}
10095
10096void
10097ppc64_elf_restore_symbols (struct bfd_link_info *info)
10098{
10099 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10100 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
10101}
10102
60124e18
AM		 10103/* What to do when ld finds relocations against symbols defined in
10104 discarded sections. */
10105
10106static unsigned int
10107ppc64_elf_action_discarded (asection *sec)
10108{
10109 if (strcmp (".opd", sec->name) == 0)
10110 return 0;
10111
10112 if (strcmp (".toc", sec->name) == 0)
10113 return 0;
10114
bce50a28
JJ		 10115 if (strcmp (".toc1", sec->name) == 0)
10116 return 0;
10117
60124e18
AM		 10118 return _bfd_elf_default_action_discarded (sec);
10119}
10120
5bd4f169
AM		 10121/* The RELOCATE_SECTION function is called by the ELF backend linker
10122 to handle the relocations for a section.
10123
10124 The relocs are always passed as Rela structures; if the section
10125 actually uses Rel structures, the r_addend field will always be
10126 zero.
10127
10128 This function is responsible for adjust the section contents as
10129 necessary, and (if using Rela relocs and generating a
1049f94e 10130 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 10131 necessary.
10132
10133 This function does not have to worry about setting the reloc
10134 address or the reloc symbol index.
10135
10136 LOCAL_SYMS is a pointer to the swapped in local symbols.
10137
10138 LOCAL_SECTIONS is an array giving the section in the input file
10139 corresponding to the st_shndx field of each local symbol.
10140
10141 The global hash table entry for the global symbols can be found
10142 via elf_sym_hashes (input_bfd).
10143
1049f94e 10144 When generating relocatable output, this function must handle
5bd4f169
AM		 10145 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
10146 going to be the section symbol corresponding to the output
10147 section, which means that the addend must be adjusted
10148 accordingly. */
10149
b34976b6 10150static bfd_boolean
4ce794b7
AM		 10151ppc64_elf_relocate_section (bfd *output_bfd,
10152 struct bfd_link_info *info,
10153 bfd *input_bfd,
10154 asection *input_section,
10155 bfd_byte *contents,
10156 Elf_Internal_Rela *relocs,
10157 Elf_Internal_Sym *local_syms,
10158 asection **local_sections)
5bd4f169 10159{
65f38f15 10160 struct ppc_link_hash_table *htab;
5bd4f169
AM		 10161 Elf_Internal_Shdr *symtab_hdr;
10162 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 10163 Elf_Internal_Rela *rel;
10164 Elf_Internal_Rela *relend;
411e1bfb
AM		 10165 Elf_Internal_Rela outrel;
10166 bfd_byte *loc;
411e1bfb 10167 struct got_entry **local_got_ents;
5bd4f169 10168 bfd_vma TOCstart;
b34976b6
AM		 10169 bfd_boolean ret = TRUE;
10170 bfd_boolean is_opd;
96e0dda4 10171 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
b34976b6 10172 bfd_boolean is_power4 = FALSE;
4fe5ca5b 10173 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 10174
65f38f15 10175 /* Initialize howto table if needed. */
5bd4f169 10176 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 10177 ppc_howto_init ();
10178
65f38f15 10179 htab = ppc_hash_table (info);
ee75fd95
AM		 10180
10181 /* Don't relocate stub sections. */
10182 if (input_section->owner == htab->stub_bfd)
10183 return TRUE;
10184
0c8d6e5c 10185 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 10186
411e1bfb 10187 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 10188 TOCstart = elf_gp (output_bfd);
0ffa91dd 10189 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 10190 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 10191 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 10192
5bd4f169
AM		 10193 rel = relocs;
10194 relend = relocs + input_section->reloc_count;
10195 for (; rel < relend; rel++)
10196 {
04c9666a 10197 enum elf_ppc64_reloc_type r_type;
4cc603a5 10198 bfd_vma addend, orig_addend;
5bd4f169
AM		 10199 bfd_reloc_status_type r;
10200 Elf_Internal_Sym *sym;
10201 asection *sec;
039b3fef
AM		 10202 struct elf_link_hash_entry *h_elf;
10203 struct ppc_link_hash_entry *h;
10204 struct ppc_link_hash_entry *fdh;
5bd4f169 10205 const char *sym_name;
0d4792f7 10206 unsigned long r_symndx, toc_symndx;
951fd09b 10207 char tls_mask, tls_gd, tls_type;
0d4792f7 10208 char sym_type;
5bd4f169 10209 bfd_vma relocation;
b34976b6
AM		 10210 bfd_boolean unresolved_reloc;
10211 bfd_boolean warned;
50bc7936 10212 unsigned long insn, mask;
721956f4
AM		 10213 struct ppc_stub_hash_entry *stub_entry;
10214 bfd_vma max_br_offset;
10215 bfd_vma from;
5bd4f169 10216
4ce794b7 10217 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 10218 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 10219
10220 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
10221 symbol of the previous ADDR64 reloc. The symbol gives us the
10222 proper TOC base to use. */
10223 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
10224 && rel != relocs
10225 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
10226 && is_opd)
10227 r_symndx = ELF64_R_SYM (rel[-1].r_info);
10228
4ce794b7
AM		 10229 sym = NULL;
10230 sec = NULL;
039b3fef 10231 h_elf = NULL;
4ce794b7 10232 sym_name = NULL;
b34976b6
AM		 10233 unresolved_reloc = FALSE;
10234 warned = FALSE;
4cc603a5 10235 orig_addend = rel->r_addend;
65f38f15 10236
0b13192e 10237 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 10238 {
10239 /* It's a local symbol. */
74f0fb50 10240 struct _opd_sec_data *opd;
4025353c 10241
5bd4f169
AM		 10242 sym = local_syms + r_symndx;
10243 sec = local_sections[r_symndx];
26c61ae5 10244 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 10245 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 10246 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 10247 opd = get_opd_info (sec);
10248 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 10249 {
74f0fb50 10250 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 10251 if (adjust == -1)
10252 relocation = 0;
10253 else
4cc603a5
AM		 10254 {
10255 /* If this is a relocation against the opd section sym
10256 and we have edited .opd, adjust the reloc addend so
10257 that ld -r and ld --emit-relocs output is correct.
10258 If it is a reloc against some other .opd symbol,
10259 then the symbol value will be adjusted later. */
10260 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
10261 rel->r_addend += adjust;
10262 else
10263 relocation += adjust;
10264 }
1e2f5b6e 10265 }
5bd4f169
AM		 10266 }
10267 else
10268 {
b2a8e766
AM		 10269 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
10270 r_symndx, symtab_hdr, sym_hashes,
039b3fef 10271 h_elf, sec, relocation,
b2a8e766 10272 unresolved_reloc, warned);
039b3fef
AM		 10273 sym_name = h_elf->root.root.string;
10274 sym_type = h_elf->type;
5bd4f169 10275 }
039b3fef 10276 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 10277
ab96bf03
AM		 10278 if (sec != NULL && elf_discarded_section (sec))
10279 {
10280 /* For relocs against symbols from removed linkonce sections,
10281 or sections discarded by a linker script, we just want the
10282 section contents zeroed. Avoid any special processing. */
10283 _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd,
10284 contents + rel->r_offset);
10285 rel->r_info = 0;
10286 rel->r_addend = 0;
10287 continue;
10288 }
10289
10290 if (info->relocatable)
10291 continue;
10292
951fd09b
AM		 10293 /* TLS optimizations. Replace instruction sequences and relocs
10294 based on information we collected in tls_optimize. We edit
10295 RELOCS so that --emit-relocs will output something sensible
10296 for the final instruction stream. */
10297 tls_mask = 0;
10298 tls_gd = 0;
0d4792f7 10299 toc_symndx = 0;
d881513a 10300 if (IS_PPC64_TLS_RELOC (r_type))
411e1bfb
AM		 10301 {
10302 if (h != NULL)
039b3fef 10303 tls_mask = h->tls_mask;
411e1bfb
AM		 10304 else if (local_got_ents != NULL)
10305 {
e7b938ca
AM		 10306 char *lgot_masks;
10307 lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info);
10308 tls_mask = lgot_masks[r_symndx];
411e1bfb 10309 }
0d4792f7
AM		 10310 if (tls_mask == 0 && r_type == R_PPC64_TLS)
10311 {
10312 /* Check for toc tls entries. */
10313 char *toc_tls;
10314
10315 if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10316 rel, input_bfd))
10317 return FALSE;
10318
10319 if (toc_tls)
10320 tls_mask = *toc_tls;
10321 }
10322 }
10323
10324 /* Check that tls relocs are used with tls syms, and non-tls
10325 relocs are used with non-tls syms. */
10326 if (r_symndx != 0
10327 && r_type != R_PPC64_NONE
10328 && (h == NULL
039b3fef
AM		 10329 || h->elf.root.type == bfd_link_hash_defined
10330 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 10331 && (IS_PPC64_TLS_RELOC (r_type)
10332 != (sym_type == STT_TLS
10333 || (sym_type == STT_SECTION
10334 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7
AM		 10335 {
10336 if (r_type == R_PPC64_TLS && tls_mask != 0)
10337 /* R_PPC64_TLS is OK against a symbol in the TOC. */
10338 ;
10339 else
10340 (*_bfd_error_handler)
1d483afe 10341 (!IS_PPC64_TLS_RELOC (r_type)
d003868e
AM		 10342 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
10343 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
10344 input_bfd,
10345 input_section,
0d4792f7
AM		 10346 (long) rel->r_offset,
10347 ppc64_elf_howto_table[r_type]->name,
10348 sym_name);
411e1bfb
AM		 10349 }
10350
10351 /* Ensure reloc mapping code below stays sane. */
10352 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
10353 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
10354 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
10355 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
10356 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
10357 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
10358 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
10359 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
10360 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
10361 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
10362 abort ();
0d4792f7 10363
411e1bfb
AM		 10364 switch (r_type)
10365 {
10366 default:
411e1bfb
AM		 10367 break;
10368
10369 case R_PPC64_TOC16:
10370 case R_PPC64_TOC16_LO:
10371 case R_PPC64_TOC16_DS:
10372 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 10373 {
10374 /* Check for toc tls entries. */
10375 char *toc_tls;
951fd09b 10376 int retval;
411e1bfb 10377
0d4792f7
AM		 10378 retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms,
10379 rel, input_bfd);
951fd09b 10380 if (retval == 0)
411e1bfb
AM		 10381 return FALSE;
10382
10383 if (toc_tls)
10384 {
951fd09b 10385 tls_mask = *toc_tls;
411e1bfb
AM		 10386 if (r_type == R_PPC64_TOC16_DS
10387 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 10388 {
10389 if (tls_mask != 0
10390 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
10391 goto toctprel;
10392 }
411e1bfb 10393 else
951fd09b
AM		 10394 {
10395 /* If we found a GD reloc pair, then we might be
10396 doing a GD->IE transition. */
10397 if (retval == 2)
10398 {
10399 tls_gd = TLS_TPRELGD;
10400 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10401 goto tls_ldgd_opt;
951fd09b
AM		 10402 }
10403 else if (retval == 3)
10404 {
10405 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 10406 goto tls_ldgd_opt;
951fd09b
AM		 10407 }
10408 }
411e1bfb
AM		 10409 }
10410 }
10411 break;
10412
10413 case R_PPC64_GOT_TPREL16_DS:
10414 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 10415 if (tls_mask != 0
10416 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10417 {
81407a69 10418 toctprel:
4fe5ca5b 10419 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 10420 insn &= 31 << 21;
10421 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 10422 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 10423 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 10424 if (toc_symndx != 0)
10425 {
10426 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10427 /* We changed the symbol. Start over in order to
10428 get h, sym, sec etc. right. */
10429 rel--;
10430 continue;
10431 }
10432 else
10433 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10434 }
10435 break;
10436
10437 case R_PPC64_TLS:
951fd09b
AM		 10438 if (tls_mask != 0
10439 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 10440 {
50bc7936 10441 bfd_vma rtra;
411e1bfb 10442 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
772119ce 10443 if ((insn & ((0x3f << 26) | (31 << 11)))
411e1bfb
AM		 10444 == ((31 << 26) | (13 << 11)))
10445 rtra = insn & ((1 << 26) - (1 << 16));
772119ce 10446 else if ((insn & ((0x3f << 26) | (31 << 16)))
411e1bfb
AM		 10447 == ((31 << 26) | (13 << 16)))
10448 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
10449 else
10450 abort ();
10451 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
10452 /* add -> addi. */
10453 insn = 14 << 26;
10454 else if ((insn & (31 << 1)) == 23 << 1
10455 && ((insn & (31 << 6)) < 14 << 6
10456 || ((insn & (31 << 6)) >= 16 << 6
10457 && (insn & (31 << 6)) < 24 << 6)))
10458 /* load and store indexed -> dform. */
10459 insn = (32 | ((insn >> 6) & 31)) << 26;
10460 else if ((insn & (31 << 1)) == 21 << 1
10461 && (insn & (0x1a << 6)) == 0)
10462 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10463 insn = (((58 | ((insn >> 6) & 4)) << 26)
10464 | ((insn >> 6) & 1));
10465 else if ((insn & (31 << 1)) == 21 << 1
10466 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
10467 /* lwax -> lwa. */
10468 insn = (58 << 26) | 2;
10469 else
10470 abort ();
10471 insn |= rtra;
10472 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 10473 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 10474 PPC64_TPREL16_LO which is at low-order half-word. */
10475 rel->r_offset += d_offset;
0d4792f7
AM		 10476 r_type = R_PPC64_TPREL16_LO;
10477 if (toc_symndx != 0)
10478 {
10479 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
10480 /* We changed the symbol. Start over in order to
10481 get h, sym, sec etc. right. */
10482 rel--;
10483 continue;
10484 }
10485 else
10486 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10487 }
10488 break;
10489
411e1bfb
AM		 10490 case R_PPC64_GOT_TLSGD16_HI:
10491 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 10492 tls_gd = TLS_TPRELGD;
10493 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
10494 goto tls_gdld_hi;
10495 break;
10496
411e1bfb
AM		 10497 case R_PPC64_GOT_TLSLD16_HI:
10498 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10499 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 10500 {
951fd09b
AM		 10501 tls_gdld_hi:
10502 if ((tls_mask & tls_gd) != 0)
10503 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10504 + R_PPC64_GOT_TPREL16_DS);
10505 else
411e1bfb 10506 {
951fd09b 10507 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4fe5ca5b 10508 rel->r_offset -= d_offset;
951fd09b 10509 r_type = R_PPC64_NONE;
411e1bfb 10510 }
951fd09b 10511 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 10512 }
10513 break;
10514
951fd09b
AM		 10515 case R_PPC64_GOT_TLSGD16:
10516 case R_PPC64_GOT_TLSGD16_LO:
10517 tls_gd = TLS_TPRELGD;
10518 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 10519 goto tls_ldgd_opt;
951fd09b 10520 break;
411e1bfb 10521
951fd09b
AM		 10522 case R_PPC64_GOT_TLSLD16:
10523 case R_PPC64_GOT_TLSLD16_LO:
10524 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
10525 {
102890f0
AM		 10526 bfd_vma insn1, insn2, insn3;
10527 bfd_vma offset;
10528
10529 tls_ldgd_opt:
10530 /* We know that the next reloc is on a tls_get_addr
10531 call, since ppc64_elf_tls_optimize checks this. */
10532 offset = rel[1].r_offset;
10533 insn1 = bfd_get_32 (output_bfd,
10534 contents + rel->r_offset - d_offset);
10535 insn3 = bfd_get_32 (output_bfd,
10536 contents + offset + 4);
10537 if ((tls_mask & tls_gd) != 0)
411e1bfb 10538 {
102890f0
AM		 10539 /* IE */
10540 insn1 &= (1 << 26) - (1 << 2);
10541 insn1 |= 58 << 26; /* ld */
10542 insn2 = 0x7c636a14; /* add 3,3,13 */
10543 rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info),
10544 R_PPC64_NONE);
10545 if ((tls_mask & TLS_EXPLICIT) == 0)
10546 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
10547 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 10548 else
102890f0
AM		 10549 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
10550 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10551 }
10552 else
10553 {
10554 /* LE */
10555 insn1 = 0x3c6d0000; /* addis 3,13,0 */
10556 insn2 = 0x38630000; /* addi 3,3,0 */
10557 if (tls_gd == 0)
951fd09b 10558 {
102890f0 10559 /* Was an LD reloc. */
1d483afe
AM		 10560 if (toc_symndx)
10561 sec = local_sections[toc_symndx];
10562 for (r_symndx = 0;
10563 r_symndx < symtab_hdr->sh_info;
10564 r_symndx++)
10565 if (local_sections[r_symndx] == sec)
10566 break;
10567 if (r_symndx >= symtab_hdr->sh_info)
10568 r_symndx = 0;
102890f0 10569 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
1d483afe
AM		 10570 if (r_symndx != 0)
10571 rel->r_addend -= (local_syms[r_symndx].st_value
10572 + sec->output_offset
10573 + sec->output_section->vma);
10574 rel[1].r_addend = rel->r_addend;
951fd09b 10575 }
102890f0
AM		 10576 else if (toc_symndx != 0)
10577 r_symndx = toc_symndx;
10578 r_type = R_PPC64_TPREL16_HA;
10579 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10580 rel[1].r_info = ELF64_R_INFO (r_symndx,
10581 R_PPC64_TPREL16_LO);
10582 rel[1].r_offset += d_offset;
10583 }
10584 if (insn3 == NOP
10585 || insn3 == CROR_151515 || insn3 == CROR_313131)
10586 {
10587 insn3 = insn2;
10588 insn2 = NOP;
10589 rel[1].r_offset += 4;
10590 }
10591 bfd_put_32 (output_bfd, insn1,
10592 contents + rel->r_offset - d_offset);
10593 bfd_put_32 (output_bfd, insn2, contents + offset);
10594 bfd_put_32 (output_bfd, insn3, contents + offset + 4);
10595 if (tls_gd == 0 || toc_symndx != 0)
10596 {
10597 /* We changed the symbol. Start over in order
10598 to get h, sym, sec etc. right. */
10599 rel--;
10600 continue;
411e1bfb 10601 }
411e1bfb 10602 }
411e1bfb
AM		 10603 break;
10604
10605 case R_PPC64_DTPMOD64:
951fd09b
AM		 10606 if (rel + 1 < relend
10607 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
10608 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 10609 {
951fd09b
AM		 10610 if ((tls_mask & TLS_GD) == 0)
10611 {
10612 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
10613 if ((tls_mask & TLS_TPRELGD) != 0)
10614 r_type = R_PPC64_TPREL64;
10615 else
10616 {
4ce794b7 10617 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 10618 r_type = R_PPC64_NONE;
10619 }
10620 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10621 }
10622 }
10623 else
10624 {
10625 if ((tls_mask & TLS_LD) == 0)
411e1bfb 10626 {
4ce794b7 10627 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 10628 r_type = R_PPC64_NONE;
951fd09b 10629 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 10630 }
411e1bfb
AM		 10631 }
10632 break;
10633
10634 case R_PPC64_TPREL64:
951fd09b 10635 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 10636 {
10637 r_type = R_PPC64_NONE;
10638 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
10639 }
10640 break;
10641 }
10642
10643 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 10644 insn = 0;
b25116a9
AM		 10645 max_br_offset = 1 << 25;
10646 addend = rel->r_addend;
65f38f15 10647 switch (r_type)
5bd4f169
AM		 10648 {
10649 default:
65f38f15 10650 break;
5bd4f169 10651
65f38f15
AM		 10652 /* Branch taken prediction relocations. */
10653 case R_PPC64_ADDR14_BRTAKEN:
10654 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 10655 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10656 /* Fall thru. */
65f38f15 10657
86c76c7b 10658 /* Branch not taken prediction relocations. */
65f38f15
AM		 10659 case R_PPC64_ADDR14_BRNTAKEN:
10660 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 10661 insn |= bfd_get_32 (output_bfd,
10662 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 10663 /* Fall thru. */
86c76c7b 10664
b25116a9
AM		 10665 case R_PPC64_REL14:
10666 max_br_offset = 1 << 15;
10667 /* Fall thru. */
5bd4f169 10668
65f38f15 10669 case R_PPC64_REL24:
ad8e1ba5
AM		 10670 /* Calls to functions with a different TOC, such as calls to
10671 shared objects, need to alter the TOC pointer. This is
10672 done using a linkage stub. A REL24 branching to these
10673 linkage stubs needs to be followed by a nop, as the nop
10674 will be replaced with an instruction to restore the TOC
10675 base pointer. */
b25116a9 10676 stub_entry = NULL;
8387904d 10677 fdh = h;
ad8e1ba5 10678 if (((h != NULL
039b3fef
AM		 10679 && (((fdh = h->oh) != NULL
10680 && fdh->elf.plt.plist != NULL)
10681 || (fdh = h)->elf.plt.plist != NULL))
8387904d 10682 || (sec != NULL
ad8e1ba5 10683 && sec->output_section != NULL
b25116a9 10684 && sec->id <= htab->top_id
ad8e1ba5
AM		 10685 && (htab->stub_group[sec->id].toc_off
10686 != htab->stub_group[input_section->id].toc_off)))
721956f4 10687 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
ad8e1ba5
AM		 10688 rel, htab)) != NULL
10689 && (stub_entry->stub_type == ppc_stub_plt_call
10690 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
10691 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 10692 {
b25116a9 10693 bfd_boolean can_plt_call = FALSE;
721956f4 10694
eea6121a 10695 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 10696 {
b25116a9
AM		 10697 unsigned long nop;
10698 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
10699 if (nop == NOP
10700 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 10701 {
4ce794b7 10702 bfd_put_32 (input_bfd, LD_R2_40R1,
411e1bfb 10703 contents + rel->r_offset + 4);
b25116a9 10704 can_plt_call = TRUE;
41bd81ab 10705 }
5bd4f169 10706 }
721956f4
AM		 10707
10708 if (!can_plt_call)
10709 {
ad8e1ba5
AM		 10710 if (stub_entry->stub_type == ppc_stub_plt_call)
10711 {
10712 /* If this is a plain branch rather than a branch
4fa1c237
AM		 10713 and link, don't require a nop. However, don't
10714 allow tail calls in a shared library as they
10715 will result in r2 being corrupted. */
b25116a9
AM		 10716 unsigned long br;
10717 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 10718 if (info->executable && (br & 1) == 0)
b25116a9 10719 can_plt_call = TRUE;
15b552e9
AM		 10720 else
10721 stub_entry = NULL;
ad8e1ba5 10722 }
6ab189d5 10723 else if (h != NULL
039b3fef 10724 && strcmp (h->elf.root.root.string,
6ab189d5
AM		 10725 ".__libc_start_main") == 0)
10726 {
10727 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 10728 can_plt_call = TRUE;
6ab189d5 10729 }
ad8e1ba5
AM		 10730 else
10731 {
10732 if (strcmp (input_section->output_section->name,
10733 ".init") == 0
10734 || strcmp (input_section->output_section->name,
10735 ".fini") == 0)
10736 (*_bfd_error_handler)
d003868e 10737 (_("%B(%A+0x%lx): automatic multiple TOCs "
ad8e1ba5
AM		 10738 "not supported using your crt files; "
10739 "recompile with -mminimal-toc or upgrade gcc"),
d003868e
AM		 10740 input_bfd,
10741 input_section,
ad8e1ba5
AM		 10742 (long) rel->r_offset);
10743 else
10744 (*_bfd_error_handler)
d003868e 10745 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
ad8e1ba5
AM		 10746 "does not allow automatic multiple TOCs; "
10747 "recompile with -mminimal-toc or "
10748 "-fno-optimize-sibling-calls, "
10749 "or make `%s' extern"),
d003868e
AM		 10750 input_bfd,
10751 input_section,
ad8e1ba5
AM		 10752 (long) rel->r_offset,
10753 sym_name,
10754 sym_name);
10755 bfd_set_error (bfd_error_bad_value);
10756 ret = FALSE;
10757 }
721956f4
AM		 10758 }
10759
b25116a9
AM		 10760 if (can_plt_call
10761 && stub_entry->stub_type == ppc_stub_plt_call)
10762 unresolved_reloc = FALSE;
10763 }
10764
8387904d
AM		 10765 if (stub_entry == NULL
10766 && get_opd_info (sec) != NULL)
10767 {
10768 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 10769 bfd_vma off = (relocation + addend
10770 - sec->output_section->vma
10771 - sec->output_offset);
8387904d
AM		 10772 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
10773 if (dest != (bfd_vma) -1)
10774 {
10775 relocation = dest;
10776 addend = 0;
10777 }
10778 }
10779
b25116a9
AM		 10780 /* If the branch is out of reach we ought to have a long
10781 branch stub. */
10782 from = (rel->r_offset
10783 + input_section->output_offset
10784 + input_section->output_section->vma);
10785
10786 if (stub_entry == NULL
4cc603a5 10787 && (relocation + addend - from + max_br_offset
b25116a9
AM		 10788 >= 2 * max_br_offset)
10789 && r_type != R_PPC64_ADDR14_BRTAKEN
10790 && r_type != R_PPC64_ADDR14_BRNTAKEN)
039b3fef
AM		 10791 stub_entry = ppc_get_stub_entry (input_section, sec, h, rel,
10792 htab);
b25116a9
AM		 10793
10794 if (stub_entry != NULL)
10795 {
10796 /* Munge up the value and addend so that we call the stub
10797 rather than the procedure directly. */
10798 relocation = (stub_entry->stub_offset
10799 + stub_entry->stub_sec->output_offset
10800 + stub_entry->stub_sec->output_section->vma);
10801 addend = 0;
10802 }
10803
10804 if (insn != 0)
10805 {
10806 if (is_power4)
721956f4 10807 {
b25116a9
AM		 10808 /* Set 'a' bit. This is 0b00010 in BO field for branch
10809 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10810 for branch on CTR insns (BO == 1a00t or 1a01t). */
10811 if ((insn & (0x14 << 21)) == (0x04 << 21))
10812 insn |= 0x02 << 21;
10813 else if ((insn & (0x14 << 21)) == (0x10 << 21))
10814 insn |= 0x08 << 21;
10815 else
10816 break;
10817 }
10818 else
10819 {
10820 /* Invert 'y' bit if not the default. */
4cc603a5 10821 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 10822 insn ^= 0x01 << 21;
721956f4 10823 }
b25116a9
AM		 10824
10825 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 10826 }
e86ce104 10827
06da1e8e
AM		 10828 /* NOP out calls to undefined weak functions.
10829 We can thus call a weak function without first
10830 checking whether the function is defined. */
b25116a9 10831 else if (h != NULL
039b3fef 10832 && h->elf.root.type == bfd_link_hash_undefweak
b25116a9
AM		 10833 && r_type == R_PPC64_REL24
10834 && relocation == 0
4cc603a5 10835 && addend == 0)
e86ce104 10836 {
06da1e8e
AM		 10837 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
10838 continue;
e86ce104 10839 }
65f38f15
AM		 10840 break;
10841 }
5bd4f169 10842
65f38f15 10843 /* Set `addend'. */
411e1bfb 10844 tls_type = 0;
65f38f15
AM		 10845 switch (r_type)
10846 {
10847 default:
10848 (*_bfd_error_handler)
d003868e
AM		 10849 (_("%B: unknown relocation type %d for symbol %s"),
10850 input_bfd, (int) r_type, sym_name);
5bd4f169 10851
65f38f15 10852 bfd_set_error (bfd_error_bad_value);
b34976b6 10853 ret = FALSE;
65f38f15 10854 continue;
5bd4f169 10855
65f38f15 10856 case R_PPC64_NONE:
411e1bfb 10857 case R_PPC64_TLS:
04c9666a
AM		 10858 case R_PPC64_GNU_VTINHERIT:
10859 case R_PPC64_GNU_VTENTRY:
65f38f15 10860 continue;
5bd4f169
AM		 10861
10862 /* GOT16 relocations. Like an ADDR16 using the symbol's
10863 address in the GOT as relocation value instead of the
411e1bfb 10864 symbol's value itself. Also, create a GOT entry for the
5bd4f169 10865 symbol and put the symbol value there. */
411e1bfb
AM		 10866 case R_PPC64_GOT_TLSGD16:
10867 case R_PPC64_GOT_TLSGD16_LO:
10868 case R_PPC64_GOT_TLSGD16_HI:
10869 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 10870 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 10871 goto dogot;
10872
10873 case R_PPC64_GOT_TLSLD16:
10874 case R_PPC64_GOT_TLSLD16_LO:
10875 case R_PPC64_GOT_TLSLD16_HI:
10876 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 10877 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 10878 goto dogot;
10879
10880 case R_PPC64_GOT_TPREL16_DS:
10881 case R_PPC64_GOT_TPREL16_LO_DS:
10882 case R_PPC64_GOT_TPREL16_HI:
10883 case R_PPC64_GOT_TPREL16_HA:
10884 tls_type = TLS_TLS | TLS_TPREL;
10885 goto dogot;
10886
10887 case R_PPC64_GOT_DTPREL16_DS:
10888 case R_PPC64_GOT_DTPREL16_LO_DS:
10889 case R_PPC64_GOT_DTPREL16_HI:
10890 case R_PPC64_GOT_DTPREL16_HA:
10891 tls_type = TLS_TLS | TLS_DTPREL;
10892 goto dogot;
10893
65f38f15
AM		 10894 case R_PPC64_GOT16:
10895 case R_PPC64_GOT16_LO:
10896 case R_PPC64_GOT16_HI:
10897 case R_PPC64_GOT16_HA:
10898 case R_PPC64_GOT16_DS:
10899 case R_PPC64_GOT16_LO_DS:
411e1bfb 10900 dogot:
5bd4f169
AM		 10901 {
10902 /* Relocation is to the entry for this symbol in the global
10903 offset table. */
e717da7e 10904 asection *got;
d881513a 10905 bfd_vma *offp;
5bd4f169 10906 bfd_vma off;
d881513a 10907 unsigned long indx = 0;
65f38f15 10908
d881513a
AM		 10909 if (tls_type == (TLS_TLS | TLS_LD)
10910 && (h == NULL
f5385ebf 10911 || !h->elf.def_dynamic))
e717da7e 10912 offp = &ppc64_tlsld_got (input_bfd)->offset;
411e1bfb 10913 else
5bd4f169 10914 {
d881513a 10915 struct got_entry *ent;
5bd4f169 10916
d881513a
AM		 10917 if (h != NULL)
10918 {
10919 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 10920 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
10921 &h->elf)
d881513a 10922 || (info->shared
039b3fef 10923 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 10924 /* This is actually a static link, or it is a
10925 -Bsymbolic link and the symbol is defined
10926 locally, or the symbol was forced to be local
10927 because of a version file. */
10928 ;
10929 else
10930 {
039b3fef 10931 indx = h->elf.dynindx;
d881513a
AM		 10932 unresolved_reloc = FALSE;
10933 }
039b3fef 10934 ent = h->elf.got.glist;
d881513a 10935 }
411e1bfb 10936 else
5bd4f169 10937 {
d881513a
AM		 10938 if (local_got_ents == NULL)
10939 abort ();
10940 ent = local_got_ents[r_symndx];
5bd4f169 10941 }
d881513a
AM		 10942
10943 for (; ent != NULL; ent = ent->next)
4cc603a5 10944 if (ent->addend == orig_addend
e717da7e 10945 && ent->owner == input_bfd
d881513a
AM		 10946 && ent->tls_type == tls_type)
10947 break;
10948 if (ent == NULL)
10949 abort ();
10950 offp = &ent->got.offset;
5bd4f169 10951 }
411e1bfb 10952
e717da7e
AM		 10953 got = ppc64_elf_tdata (input_bfd)->got;
10954 if (got == NULL)
10955 abort ();
10956
411e1bfb
AM		 10957 /* The offset must always be a multiple of 8. We use the
10958 least significant bit to record whether we have already
10959 processed this entry. */
d881513a 10960 off = *offp;
411e1bfb
AM		 10961 if ((off & 1) != 0)
10962 off &= ~1;
5bd4f169
AM		 10963 else
10964 {
411e1bfb
AM		 10965 /* Generate relocs for the dynamic linker, except in
10966 the case of TLSLD where we'll use one entry per
10967 module. */
e717da7e
AM		 10968 asection *relgot = ppc64_elf_tdata (input_bfd)->relgot;
10969
d881513a 10970 *offp = off | 1;
4e795f50
AM		 10971 if ((info->shared || indx != 0)
10972 && (h == NULL
039b3fef
AM		 10973 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
10974 || h->elf.root.type != bfd_link_hash_undefweak))
5bd4f169 10975 {
e717da7e
AM		 10976 outrel.r_offset = (got->output_section->vma
10977 + got->output_offset
411e1bfb 10978 + off);
4cc603a5 10979 outrel.r_addend = addend;
d881513a 10980 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 10981 {
411e1bfb 10982 outrel.r_addend = 0;
e515b051 10983 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 10984 if (tls_type == (TLS_TLS | TLS_GD))
10985 {
e717da7e
AM		 10986 loc = relgot->contents;
10987 loc += (relgot->reloc_count++
d881513a
AM		 10988 * sizeof (Elf64_External_Rela));
10989 bfd_elf64_swap_reloca_out (output_bfd,
10990 &outrel, loc);
e515b051 10991 outrel.r_offset += 8;
4cc603a5 10992 outrel.r_addend = addend;
d881513a
AM		 10993 outrel.r_info
10994 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 10995 }
411e1bfb 10996 }
951fd09b 10997 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 10998 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 10999 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb
AM		 11000 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
11001 else if (indx == 0)
81407a69
AM		 11002 {
11003 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE);
11004
11005 /* Write the .got section contents for the sake
11006 of prelink. */
e717da7e 11007 loc = got->contents + off;
23fbd6fa
JJ		 11008 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
11009 loc);
81407a69 11010 }
411e1bfb
AM		 11011 else
11012 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
81407a69
AM		 11013
11014 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 11015 {
11016 outrel.r_addend += relocation;
11017 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 11018 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 11019 }
e717da7e
AM		 11020 loc = relgot->contents;
11021 loc += (relgot->reloc_count++
411e1bfb
AM		 11022 * sizeof (Elf64_External_Rela));
11023 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11024 }
11025
ad8e1ba5 11026 /* Init the .got section contents here if we're not
81407a69 11027 emitting a reloc. */
d881513a 11028 else
411e1bfb 11029 {
4cc603a5 11030 relocation += addend;
7b609f53
AM		 11031 if (tls_type == (TLS_TLS | TLS_LD))
11032 relocation = 1;
11033 else if (tls_type != 0)
411e1bfb 11034 {
e1918d23 11035 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 11036 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 11037 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 11038
7b609f53
AM		 11039 if (tls_type == (TLS_TLS | TLS_GD))
11040 {
11041 bfd_put_64 (output_bfd, relocation,
e717da7e 11042 got->contents + off + 8);
7b609f53
AM		 11043 relocation = 1;
11044 }
411e1bfb 11045 }
7b609f53 11046
411e1bfb 11047 bfd_put_64 (output_bfd, relocation,
e717da7e 11048 got->contents + off);
5bd4f169
AM		 11049 }
11050 }
11051
65f38f15
AM		 11052 if (off >= (bfd_vma) -2)
11053 abort ();
11054
e717da7e 11055 relocation = got->output_offset + off;
65f38f15 11056
5bd4f169 11057 /* TOC base (r2) is TOC start plus 0x8000. */
e717da7e 11058 addend = -TOC_BASE_OFF;
5bd4f169 11059 }
65f38f15
AM		 11060 break;
11061
11062 case R_PPC64_PLT16_HA:
11063 case R_PPC64_PLT16_HI:
11064 case R_PPC64_PLT16_LO:
11065 case R_PPC64_PLT32:
11066 case R_PPC64_PLT64:
11067 /* Relocation is to the entry for this symbol in the
11068 procedure linkage table. */
11069
11070 /* Resolve a PLT reloc against a local symbol directly,
11071 without using the procedure linkage table. */
11072 if (h == NULL)
11073 break;
11074
411e1bfb
AM		 11075 /* It's possible that we didn't make a PLT entry for this
11076 symbol. This happens when statically linking PIC code,
11077 or when using -Bsymbolic. Go find a match if there is a
11078 PLT entry. */
4ce794b7 11079 if (htab->plt != NULL)
65f38f15 11080 {
411e1bfb 11081 struct plt_entry *ent;
039b3fef 11082 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 11083 if (ent->addend == orig_addend
411e1bfb
AM		 11084 && ent->plt.offset != (bfd_vma) -1)
11085 {
4ce794b7
AM		 11086 relocation = (htab->plt->output_section->vma
11087 + htab->plt->output_offset
411e1bfb
AM		 11088 + ent->plt.offset);
11089 unresolved_reloc = FALSE;
11090 }
65f38f15 11091 }
65f38f15 11092 break;
5bd4f169 11093
0b13192e
AM		 11094 case R_PPC64_TOC:
11095 /* Relocation value is TOC base. */
11096 relocation = TOCstart;
11097 if (r_symndx == 0)
11098 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 11099 else if (unresolved_reloc)
11100 ;
11101 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 11102 relocation += htab->stub_group[sec->id].toc_off;
11103 else
11104 unresolved_reloc = TRUE;
ab96bf03 11105 goto dodyn;
0b13192e 11106
5bd4f169
AM		 11107 /* TOC16 relocs. We want the offset relative to the TOC base,
11108 which is the address of the start of the TOC plus 0x8000.
11109 The TOC consists of sections .got, .toc, .tocbss, and .plt,
11110 in this order. */
65f38f15
AM		 11111 case R_PPC64_TOC16:
11112 case R_PPC64_TOC16_LO:
11113 case R_PPC64_TOC16_HI:
11114 case R_PPC64_TOC16_DS:
11115 case R_PPC64_TOC16_LO_DS:
11116 case R_PPC64_TOC16_HA:
ad8e1ba5 11117 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 11118 break;
11119
11120 /* Relocate against the beginning of the section. */
65f38f15
AM		 11121 case R_PPC64_SECTOFF:
11122 case R_PPC64_SECTOFF_LO:
11123 case R_PPC64_SECTOFF_HI:
11124 case R_PPC64_SECTOFF_DS:
11125 case R_PPC64_SECTOFF_LO_DS:
11126 case R_PPC64_SECTOFF_HA:
4ce794b7 11127 if (sec != NULL)
65f38f15 11128 addend -= sec->output_section->vma;
5bd4f169
AM		 11129 break;
11130
721956f4
AM		 11131 case R_PPC64_REL14:
11132 case R_PPC64_REL14_BRNTAKEN:
11133 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 11134 case R_PPC64_REL24:
11135 break;
11136
411e1bfb
AM		 11137 case R_PPC64_TPREL16:
11138 case R_PPC64_TPREL16_LO:
11139 case R_PPC64_TPREL16_HI:
11140 case R_PPC64_TPREL16_HA:
11141 case R_PPC64_TPREL16_DS:
11142 case R_PPC64_TPREL16_LO_DS:
11143 case R_PPC64_TPREL16_HIGHER:
11144 case R_PPC64_TPREL16_HIGHERA:
11145 case R_PPC64_TPREL16_HIGHEST:
11146 case R_PPC64_TPREL16_HIGHESTA:
e1918d23 11147 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 11148 if (info->shared)
11149 /* The TPREL16 relocs shouldn't really be used in shared
11150 libs as they will result in DT_TEXTREL being set, but
11151 support them anyway. */
11152 goto dodyn;
11153 break;
11154
11155 case R_PPC64_DTPREL16:
11156 case R_PPC64_DTPREL16_LO:
11157 case R_PPC64_DTPREL16_HI:
11158 case R_PPC64_DTPREL16_HA:
11159 case R_PPC64_DTPREL16_DS:
11160 case R_PPC64_DTPREL16_LO_DS:
11161 case R_PPC64_DTPREL16_HIGHER:
11162 case R_PPC64_DTPREL16_HIGHERA:
11163 case R_PPC64_DTPREL16_HIGHEST:
11164 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 11165 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 11166 break;
11167
e515b051
AM		 11168 case R_PPC64_DTPMOD64:
11169 relocation = 1;
11170 addend = 0;
11171 goto dodyn;
11172
411e1bfb 11173 case R_PPC64_TPREL64:
e1918d23 11174 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 11175 goto dodyn;
11176
11177 case R_PPC64_DTPREL64:
e1918d23 11178 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 11179 /* Fall thru */
11180
65f38f15
AM		 11181 /* Relocations that may need to be propagated if this is a
11182 dynamic object. */
04c9666a 11183 case R_PPC64_REL30:
65f38f15
AM		 11184 case R_PPC64_REL32:
11185 case R_PPC64_REL64:
11186 case R_PPC64_ADDR14:
11187 case R_PPC64_ADDR14_BRNTAKEN:
11188 case R_PPC64_ADDR14_BRTAKEN:
11189 case R_PPC64_ADDR16:
11190 case R_PPC64_ADDR16_DS:
11191 case R_PPC64_ADDR16_HA:
11192 case R_PPC64_ADDR16_HI:
11193 case R_PPC64_ADDR16_HIGHER:
11194 case R_PPC64_ADDR16_HIGHERA:
11195 case R_PPC64_ADDR16_HIGHEST:
11196 case R_PPC64_ADDR16_HIGHESTA:
11197 case R_PPC64_ADDR16_LO:
11198 case R_PPC64_ADDR16_LO_DS:
11199 case R_PPC64_ADDR24:
65f38f15
AM		 11200 case R_PPC64_ADDR32:
11201 case R_PPC64_ADDR64:
11202 case R_PPC64_UADDR16:
11203 case R_PPC64_UADDR32:
11204 case R_PPC64_UADDR64:
411e1bfb 11205 dodyn:
5d1634d7 11206 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 11207 break;
11208
41bd81ab
AM		 11209 if (NO_OPD_RELOCS && is_opd)
11210 break;
11211
65f38f15 11212 if ((info->shared
4e795f50 11213 && (h == NULL
039b3fef
AM		 11214 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
11215 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 11216 && (must_be_dyn_reloc (info, r_type)
039b3fef 11217 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 11218 || (ELIMINATE_COPY_RELOCS
11219 && !info->shared
65f38f15 11220 && h != NULL
039b3fef 11221 && h->elf.dynindx != -1
f5385ebf 11222 && !h->elf.non_got_ref
f5385ebf 11223 && !h->elf.def_regular))
65f38f15
AM		 11224 {
11225 Elf_Internal_Rela outrel;
b34976b6 11226 bfd_boolean skip, relocate;
65f38f15 11227 asection *sreloc;
947216bf 11228 bfd_byte *loc;
1cf1f670 11229 bfd_vma out_off;
65f38f15
AM		 11230
11231 /* When generating a dynamic object, these relocations
11232 are copied into the output file to be resolved at run
11233 time. */
11234
b34976b6
AM		 11235 skip = FALSE;
11236 relocate = FALSE;
65f38f15 11237
1cf1f670
AM		 11238 out_off = _bfd_elf_section_offset (output_bfd, info,
11239 input_section, rel->r_offset);
11240 if (out_off == (bfd_vma) -1)
b34976b6 11241 skip = TRUE;
1cf1f670 11242 else if (out_off == (bfd_vma) -2)
b34976b6 11243 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 11244 out_off += (input_section->output_section->vma
11245 + input_section->output_offset);
11246 outrel.r_offset = out_off;
411e1bfb 11247 outrel.r_addend = rel->r_addend;
65f38f15 11248
1cf1f670
AM		 11249 /* Optimize unaligned reloc use. */
11250 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
11251 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
11252 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
11253 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
11254 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
11255 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
11256 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
11257 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
11258 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
11259
65f38f15 11260 if (skip)
0bb2d96a 11261 memset (&outrel, 0, sizeof outrel);
039b3fef 11262 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 11263 && !is_opd
11264 && r_type != R_PPC64_TOC)
039b3fef 11265 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM		 11266 else
11267 {
41bd81ab
AM		 11268 /* This symbol is local, or marked to become local,
11269 or this is an opd section reloc which must point
11270 at a local function. */
65f38f15 11271 outrel.r_addend += relocation;
e86ce104 11272 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 11273 {
3fad3c7c 11274 if (is_opd && h != NULL)
afbe61cf
AM		 11275 {
11276 /* Lie about opd entries. This case occurs
11277 when building shared libraries and we
11278 reference a function in another shared
3fad3c7c
AM		 11279 lib. The same thing happens for a weak
11280 definition in an application that's
11281 overridden by a strong definition in a
11282 shared lib. (I believe this is a generic
11283 bug in binutils handling of weak syms.)
11284 In these cases we won't use the opd
1e2f5b6e 11285 entry in this lib. */
b34976b6 11286 unresolved_reloc = FALSE;
afbe61cf 11287 }
65f38f15 11288 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 11289
11290 /* We need to relocate .opd contents for ld.so.
11291 Prelink also wants simple and consistent rules
11292 for relocs. This make all RELATIVE relocs have
11293 *r_offset equal to r_addend. */
11294 relocate = TRUE;
65f38f15
AM		 11295 }
11296 else
11297 {
11298 long indx = 0;
11299
1d483afe 11300 if (r_symndx == 0 || bfd_is_abs_section (sec))
65f38f15
AM		 11301 ;
11302 else if (sec == NULL || sec->owner == NULL)
11303 {
11304 bfd_set_error (bfd_error_bad_value);
b34976b6 11305 return FALSE;
65f38f15
AM		 11306 }
11307 else
11308 {
11309 asection *osec;
11310
11311 osec = sec->output_section;
11312 indx = elf_section_data (osec)->dynindx;
11313
74541ad4
AM		 11314 if (indx == 0)
11315 {
11316 if ((osec->flags & SEC_READONLY) == 0
11317 && htab->elf.data_index_section != NULL)
11318 osec = htab->elf.data_index_section;
11319 else
11320 osec = htab->elf.text_index_section;
11321 indx = elf_section_data (osec)->dynindx;
11322 }
11323 BFD_ASSERT (indx != 0);
11324
65f38f15
AM		 11325 /* We are turning this relocation into one
11326 against a section symbol, so subtract out
11327 the output section's address but not the
11328 offset of the input section in the output
11329 section. */
11330 outrel.r_addend -= osec->vma;
11331 }
11332
11333 outrel.r_info = ELF64_R_INFO (indx, r_type);
11334 }
11335 }
11336
11337 sreloc = elf_section_data (input_section)->sreloc;
11338 if (sreloc == NULL)
11339 abort ();
11340
dfbb6ac9
AM		 11341 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
11342 >= sreloc->size)
11343 abort ();
947216bf
AM		 11344 loc = sreloc->contents;
11345 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 11346 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
11347
11348 /* If this reloc is against an external symbol, it will
11349 be computed at runtime, so there's no need to do
81407a69
AM		 11350 anything now. However, for the sake of prelink ensure
11351 that the section contents are a known value. */
65f38f15 11352 if (! relocate)
81407a69
AM		 11353 {
11354 unresolved_reloc = FALSE;
11355 /* The value chosen here is quite arbitrary as ld.so
11356 ignores section contents except for the special
11357 case of .opd where the contents might be accessed
11358 before relocation. Choose zero, as that won't
11359 cause reloc overflow. */
11360 relocation = 0;
11361 addend = 0;
11362 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11363 to improve backward compatibility with older
11364 versions of ld. */
11365 if (r_type == R_PPC64_ADDR64)
11366 addend = outrel.r_addend;
11367 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 11368 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 11369 addend = (input_section->output_section->vma
11370 + input_section->output_offset
11371 + rel->r_offset);
81407a69 11372 }
65f38f15 11373 }
5bd4f169
AM		 11374 break;
11375
65f38f15
AM		 11376 case R_PPC64_COPY:
11377 case R_PPC64_GLOB_DAT:
11378 case R_PPC64_JMP_SLOT:
11379 case R_PPC64_RELATIVE:
11380 /* We shouldn't ever see these dynamic relocs in relocatable
11381 files. */
ae9a127f 11382 /* Fall through. */
65f38f15
AM		 11383
11384 case R_PPC64_PLTGOT16:
11385 case R_PPC64_PLTGOT16_DS:
11386 case R_PPC64_PLTGOT16_HA:
11387 case R_PPC64_PLTGOT16_HI:
11388 case R_PPC64_PLTGOT16_LO:
11389 case R_PPC64_PLTGOT16_LO_DS:
11390 case R_PPC64_PLTREL32:
11391 case R_PPC64_PLTREL64:
11392 /* These ones haven't been implemented yet. */
11393
11394 (*_bfd_error_handler)
d003868e
AM		 11395 (_("%B: relocation %s is not supported for symbol %s."),
11396 input_bfd,
4ce794b7 11397 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 11398
11399 bfd_set_error (bfd_error_invalid_operation);
b34976b6 11400 ret = FALSE;
5bd4f169 11401 continue;
65f38f15 11402 }
5bd4f169 11403
65f38f15
AM		 11404 /* Do any further special processing. */
11405 switch (r_type)
11406 {
11407 default:
11408 break;
11409
11410 case R_PPC64_ADDR16_HA:
11411 case R_PPC64_ADDR16_HIGHERA:
11412 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 11413 case R_PPC64_TOC16_HA:
11414 case R_PPC64_SECTOFF_HA:
411e1bfb
AM		 11415 case R_PPC64_TPREL16_HA:
11416 case R_PPC64_DTPREL16_HA:
411e1bfb
AM		 11417 case R_PPC64_TPREL16_HIGHER:
11418 case R_PPC64_TPREL16_HIGHERA:
11419 case R_PPC64_TPREL16_HIGHEST:
11420 case R_PPC64_TPREL16_HIGHESTA:
11421 case R_PPC64_DTPREL16_HIGHER:
11422 case R_PPC64_DTPREL16_HIGHERA:
11423 case R_PPC64_DTPREL16_HIGHEST:
11424 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 11425 /* It's just possible that this symbol is a weak symbol
11426 that's not actually defined anywhere. In that case,
11427 'sec' would be NULL, and we should leave the symbol
11428 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 11429 if (sec == NULL)
11430 break;
11431 /* Fall thru */
11432
11433 case R_PPC64_GOT16_HA:
11434 case R_PPC64_PLTGOT16_HA:
11435 case R_PPC64_PLT16_HA:
11436 case R_PPC64_GOT_TLSGD16_HA:
11437 case R_PPC64_GOT_TLSLD16_HA:
11438 case R_PPC64_GOT_TPREL16_HA:
11439 case R_PPC64_GOT_DTPREL16_HA:
11440 /* Add 0x10000 if sign bit in 0:15 is set.
11441 Bits 0:15 are not used. */
11442 addend += 0x8000;
65f38f15
AM		 11443 break;
11444
11445 case R_PPC64_ADDR16_DS:
11446 case R_PPC64_ADDR16_LO_DS:
11447 case R_PPC64_GOT16_DS:
11448 case R_PPC64_GOT16_LO_DS:
11449 case R_PPC64_PLT16_LO_DS:
11450 case R_PPC64_SECTOFF_DS:
11451 case R_PPC64_SECTOFF_LO_DS:
11452 case R_PPC64_TOC16_DS:
11453 case R_PPC64_TOC16_LO_DS:
11454 case R_PPC64_PLTGOT16_DS:
11455 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 11456 case R_PPC64_GOT_TPREL16_DS:
11457 case R_PPC64_GOT_TPREL16_LO_DS:
11458 case R_PPC64_GOT_DTPREL16_DS:
11459 case R_PPC64_GOT_DTPREL16_LO_DS:
11460 case R_PPC64_TPREL16_DS:
11461 case R_PPC64_TPREL16_LO_DS:
11462 case R_PPC64_DTPREL16_DS:
11463 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 11464 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
11465 mask = 3;
11466 /* If this reloc is against an lq insn, then the value must be
11467 a multiple of 16. This is somewhat of a hack, but the
11468 "correct" way to do this by defining _DQ forms of all the
11469 _DS relocs bloats all reloc switches in this file. It
11470 doesn't seem to make much sense to use any of these relocs
11471 in data, so testing the insn should be safe. */
494dac0c 11472 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 11473 mask = 15;
11474 if (((relocation + addend) & mask) != 0)
65f38f15
AM		 11475 {
11476 (*_bfd_error_handler)
d003868e
AM		 11477 (_("%B: error: relocation %s not a multiple of %d"),
11478 input_bfd,
4ce794b7 11479 ppc64_elf_howto_table[r_type]->name,
adadcc0c 11480 mask + 1);
65f38f15 11481 bfd_set_error (bfd_error_bad_value);
b34976b6 11482 ret = FALSE;
65f38f15
AM		 11483 continue;
11484 }
11485 break;
5bd4f169
AM		 11486 }
11487
239e1f3a
AM		 11488 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11489 because such sections are not SEC_ALLOC and thus ld.so will
11490 not process them. */
65f38f15 11491 if (unresolved_reloc
239e1f3a 11492 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 11493 && h->elf.def_dynamic))
9c07fe7c
AM		 11494 {
11495 (*_bfd_error_handler)
d003868e
AM		 11496 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11497 input_bfd,
11498 input_section,
9c07fe7c 11499 (long) rel->r_offset,
7b609f53 11500 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 11501 h->elf.root.root.string);
b34976b6 11502 ret = FALSE;
9c07fe7c 11503 }
5bd4f169 11504
65f38f15 11505 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM		 11506 input_bfd,
11507 input_section,
11508 contents,
411e1bfb 11509 rel->r_offset,
5bd4f169
AM		 11510 relocation,
11511 addend);
11512
ef60b7ff 11513 if (r != bfd_reloc_ok)
5bd4f169 11514 {
cd27b276
AM		 11515 if (sym_name == NULL)
11516 sym_name = "(null)";
11517 if (r == bfd_reloc_overflow)
5bd4f169 11518 {
cd27b276
AM		 11519 if (warned)
11520 continue;
11521 if (h != NULL
039b3fef 11522 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 11523 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM		 11524 {
11525 /* Assume this is a call protected by other code that
11526 detects the symbol is undefined. If this is the case,
11527 we can safely ignore the overflow. If not, the
11528 program is hosed anyway, and a little warning isn't
11529 going to help. */
11530
11531 continue;
11532 }
11533
ef60b7ff 11534 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 11535 (info, (h ? &h->elf.root : NULL), sym_name,
11536 ppc64_elf_howto_table[r_type]->name,
4cc603a5 11537 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 11538 return FALSE;
ef60b7ff
AM		 11539 }
11540 else
11541 {
11542 (*_bfd_error_handler)
d003868e
AM		 11543 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11544 input_bfd,
11545 input_section,
7b609f53 11546 (long) rel->r_offset,
4ce794b7 11547 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM		 11548 sym_name,
11549 (int) r);
b34976b6 11550 ret = FALSE;
ef60b7ff 11551 }
5bd4f169 11552 }
5bd4f169
AM		 11553 }
11554
645ea6a9
AM		 11555 /* If we're emitting relocations, then shortly after this function
11556 returns, reloc offsets and addends for this section will be
11557 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 11558 file rather than the input. Save a copy of the relocs for
11559 opd_entry_value. */
4cc603a5 11560 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 11561 {
11562 bfd_size_type amt;
11563 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
11564 rel = bfd_alloc (input_bfd, amt);
11565 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
11566 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
11567 if (rel == NULL)
11568 return FALSE;
11569 memcpy (rel, relocs, amt);
11570 }
5bd4f169
AM		 11571 return ret;
11572}
11573
754021d0
AM		 11574/* Adjust the value of any local symbols in opd sections. */
11575
11576static bfd_boolean
11577ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
11578 const char *name ATTRIBUTE_UNUSED,
11579 Elf_Internal_Sym *elfsym,
11580 asection *input_sec,
11581 struct elf_link_hash_entry *h)
11582{
74f0fb50
AM		 11583 struct _opd_sec_data *opd;
11584 long adjust;
754021d0
AM		 11585 bfd_vma value;
11586
4025353c
AM		 11587 if (h != NULL)
11588 return TRUE;
11589
74f0fb50
AM		 11590 opd = get_opd_info (input_sec);
11591 if (opd == NULL || opd->adjust == NULL)
754021d0
AM		 11592 return TRUE;
11593
11594 value = elfsym->st_value - input_sec->output_offset;
11595 if (!info->relocatable)
11596 value -= input_sec->output_section->vma;
11597
74f0fb50 11598 adjust = opd->adjust[value / 8];
4025353c
AM		 11599 if (adjust == -1)
11600 elfsym->st_value = 0;
11601 else
11602 elfsym->st_value += adjust;
754021d0
AM		 11603 return TRUE;
11604}
11605
5bd4f169
AM		 11606/* Finish up dynamic symbol handling. We set the contents of various
11607 dynamic sections here. */
11608
b34976b6 11609static bfd_boolean
4ce794b7
AM		 11610ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
11611 struct bfd_link_info *info,
11612 struct elf_link_hash_entry *h,
11613 Elf_Internal_Sym *sym)
5bd4f169 11614{
65f38f15 11615 struct ppc_link_hash_table *htab;
8387904d
AM		 11616 struct plt_entry *ent;
11617 Elf_Internal_Rela rela;
11618 bfd_byte *loc;
5bd4f169 11619
65f38f15 11620 htab = ppc_hash_table (info);
5bd4f169 11621
8387904d
AM		 11622 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
11623 if (ent->plt.offset != (bfd_vma) -1)
11624 {
11625 /* This symbol has an entry in the procedure linkage
11626 table. Set it up. */
11627
11628 if (htab->plt == NULL
11629 || htab->relplt == NULL
11630 || htab->glink == NULL)
11631 abort ();
11632
11633 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11634 fill in the PLT entry. */
11635 rela.r_offset = (htab->plt->output_section->vma
11636 + htab->plt->output_offset
11637 + ent->plt.offset);
11638 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
11639 rela.r_addend = ent->addend;
11640
11641 loc = htab->relplt->contents;
11642 loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
11643 * sizeof (Elf64_External_Rela));
11644 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
11645 }
5bd4f169 11646
f5385ebf 11647 if (h->needs_copy)
5bd4f169 11648 {
5bd4f169 11649 Elf_Internal_Rela rela;
947216bf 11650 bfd_byte *loc;
5bd4f169 11651
65f38f15 11652 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 11653
65f38f15
AM		 11654 if (h->dynindx == -1
11655 || (h->root.type != bfd_link_hash_defined
11656 && h->root.type != bfd_link_hash_defweak)
4ce794b7 11657 || htab->relbss == NULL)
65f38f15 11658 abort ();
5bd4f169
AM		 11659
11660 rela.r_offset = (h->root.u.def.value
11661 + h->root.u.def.section->output_section->vma
11662 + h->root.u.def.section->output_offset);
11663 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
11664 rela.r_addend = 0;
4ce794b7
AM		 11665 loc = htab->relbss->contents;
11666 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 11667 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 11668 }
11669
5bd4f169
AM		 11670 /* Mark some specially defined symbols as absolute. */
11671 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
11672 sym->st_shndx = SHN_ABS;
11673
b34976b6 11674 return TRUE;
5bd4f169
AM		 11675}
11676
65f38f15
AM		 11677/* Used to decide how to sort relocs in an optimal manner for the
11678 dynamic linker, before writing them out. */
11679
11680static enum elf_reloc_type_class
4ce794b7 11681ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 11682{
04c9666a 11683 enum elf_ppc64_reloc_type r_type;
a33d1f77 11684
4ce794b7 11685 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 11686 switch (r_type)
65f38f15
AM		 11687 {
11688 case R_PPC64_RELATIVE:
11689 return reloc_class_relative;
11690 case R_PPC64_JMP_SLOT:
11691 return reloc_class_plt;
11692 case R_PPC64_COPY:
11693 return reloc_class_copy;
11694 default:
11695 return reloc_class_normal;
11696 }
11697}
11698
5bd4f169
AM		 11699/* Finish up the dynamic sections. */
11700
b34976b6 11701static bfd_boolean
4ce794b7
AM		 11702ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
11703 struct bfd_link_info *info)
5bd4f169 11704{
65f38f15
AM		 11705 struct ppc_link_hash_table *htab;
11706 bfd *dynobj;
5bd4f169 11707 asection *sdyn;
5bd4f169 11708
65f38f15
AM		 11709 htab = ppc_hash_table (info);
11710 dynobj = htab->elf.dynobj;
5bd4f169
AM		 11711 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11712
65f38f15 11713 if (htab->elf.dynamic_sections_created)
5bd4f169 11714 {
5bd4f169
AM		 11715 Elf64_External_Dyn *dyncon, *dynconend;
11716
4ce794b7 11717 if (sdyn == NULL || htab->got == NULL)
65f38f15 11718 abort ();
5bd4f169
AM		 11719
11720 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 11721 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 11722 for (; dyncon < dynconend; dyncon++)
11723 {
11724 Elf_Internal_Dyn dyn;
19397422 11725 asection *s;
5bd4f169
AM		 11726
11727 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
11728
11729 switch (dyn.d_tag)
11730 {
65f38f15
AM		 11731 default:
11732 continue;
5bd4f169 11733
5d1634d7 11734 case DT_PPC64_GLINK:
4ce794b7 11735 s = htab->glink;
6348e046 11736 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 11737 /* We stupidly defined DT_PPC64_GLINK to be the start
11738 of glink rather than the first entry point, which is
11739 what ld.so needs, and now have a bigger stub to
11740 support automatic multiple TOCs. */
11741 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM		 11742 break;
11743
19397422
AM		 11744 case DT_PPC64_OPD:
11745 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11746 if (s == NULL)
11747 continue;
11748 dyn.d_un.d_ptr = s->vma;
19397422
AM		 11749 break;
11750
11751 case DT_PPC64_OPDSZ:
11752 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 11753 if (s == NULL)
11754 continue;
eea6121a 11755 dyn.d_un.d_val = s->size;
19397422
AM		 11756 break;
11757
65f38f15 11758 case DT_PLTGOT:
4ce794b7 11759 s = htab->plt;
6348e046 11760 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 11761 break;
11762
11763 case DT_JMPREL:
4ce794b7 11764 s = htab->relplt;
6348e046 11765 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 11766 break;
5bd4f169 11767
65f38f15 11768 case DT_PLTRELSZ:
eea6121a 11769 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM		 11770 break;
11771
11772 case DT_RELASZ:
11773 /* Don't count procedure linkage table relocs in the
11774 overall reloc count. */
4ce794b7 11775 s = htab->relplt;
6348e046
AM		 11776 if (s == NULL)
11777 continue;
eea6121a 11778 dyn.d_un.d_val -= s->size;
6348e046
AM		 11779 break;
11780
11781 case DT_RELA:
11782 /* We may not be using the standard ELF linker script.
11783 If .rela.plt is the first .rela section, we adjust
11784 DT_RELA to not include it. */
4ce794b7 11785 s = htab->relplt;
6348e046
AM		 11786 if (s == NULL)
11787 continue;
11788 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
11789 continue;
eea6121a 11790 dyn.d_un.d_ptr += s->size;
65f38f15 11791 break;
5bd4f169 11792 }
5bd4f169 11793
65f38f15 11794 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 11795 }
5bd4f169
AM		 11796 }
11797
eea6121a 11798 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM		 11799 {
11800 /* Fill in the first entry in the global offset table.
11801 We use it to hold the link-time TOCbase. */
11802 bfd_put_64 (output_bfd,
60ee0d4a 11803 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 11804 htab->got->contents);
5d1634d7
AM		 11805
11806 /* Set .got entry size. */
4ce794b7 11807 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 11808 }
11809
eea6121a 11810 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM		 11811 {
11812 /* Set .plt entry size. */
4ce794b7 11813 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM		 11814 = PLT_ENTRY_SIZE;
11815 }
11816
84f5d08e
AM		 11817 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11818 brlt ourselves if emitrelocations. */
11819 if (htab->brlt != NULL
11820 && htab->brlt->reloc_count != 0
11821 && !_bfd_elf_link_output_relocs (output_bfd,
11822 htab->brlt,
11823 &elf_section_data (htab->brlt)->rel_hdr,
11824 elf_section_data (htab->brlt)->relocs,
11825 NULL))
11826 return FALSE;
11827
176a0d42
AM		 11828 if (htab->glink != NULL
11829 && htab->glink->reloc_count != 0
11830 && !_bfd_elf_link_output_relocs (output_bfd,
11831 htab->glink,
11832 &elf_section_data (htab->glink)->rel_hdr,
11833 elf_section_data (htab->glink)->relocs,
11834 NULL))
11835 return FALSE;
11836
e717da7e 11837 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 11838 since we didn't add them to DYNOBJ. We know dynobj is the first
11839 bfd. */
e717da7e
AM		 11840 while ((dynobj = dynobj->link_next) != NULL)
11841 {
11842 asection *s;
7b53ace3 11843
0c8d6e5c 11844 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 11845 continue;
11846
e717da7e
AM		 11847 s = ppc64_elf_tdata (dynobj)->got;
11848 if (s != NULL
eea6121a 11849 && s->size != 0
e717da7e
AM		 11850 && s->output_section != bfd_abs_section_ptr
11851 && !bfd_set_section_contents (output_bfd, s->output_section,
11852 s->contents, s->output_offset,
eea6121a 11853 s->size))
e717da7e
AM		 11854 return FALSE;
11855 s = ppc64_elf_tdata (dynobj)->relgot;
11856 if (s != NULL
eea6121a 11857 && s->size != 0
e717da7e
AM		 11858 && s->output_section != bfd_abs_section_ptr
11859 && !bfd_set_section_contents (output_bfd, s->output_section,
11860 s->contents, s->output_offset,
eea6121a 11861 s->size))
e717da7e
AM		 11862 return FALSE;
11863 }
f6c52c13 11864
b34976b6 11865 return TRUE;
5bd4f169
AM		 11866}
11867
5bd4f169 11868#include "elf64-target.h"
GDB Binutils - Deliverables
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